CN209526137U - Battery system and electric vehicle with the battery system - Google Patents

Abstract

The utility model discloses a kind of battery system and with the electric vehicle of the battery system, the battery system includes: mounting shell, has installation cavity in mounting shell, installation cavity has opposite in a first direction the first wall surface and the second wall surface；Battery modules, battery modules are located in installation cavity；Heat-exchanger rig, heat-exchanger rig are located in installation cavity, and heat-exchanger rig is located in a first direction between battery modules and the first wall surface, and battery modules are contacted with heat-exchanger rig；And elastic component, elastic component is located between heat-exchanger rig and the first wall surface in a first direction and/or is located between battery modules and the second wall surface in a first direction, the contact of each of elastic component and the first wall surface of heat-exchanger rig and installation cavity and/or elastic component are contacted with each of battery modules and the second wall surface of installation cavity, and elastic component is in compressive state.Has many advantages, such as heat transfer efficiency height, performance stabilization, long service life, highly-safe according to the battery system of the utility model embodiment.

Description

Battery system and electric vehicle having the same

technical field

The utility model relates to the field of batteries, in particular to a battery system and an electric vehicle with the battery system.

Background technique

Batteries are the power source of electric vehicles and the core components of electric vehicles. Temperature directly affects the performance of the battery, so it is necessary to strictly control the working temperature of the battery. Abnormal temperature will have a huge impact on the performance and life of the battery of electric vehicles, and may even cause safety problems such as thermal runaway.

Utility model content

The purpose of the utility model is to provide a battery system and an electric vehicle with the battery system in order to overcome the problems existing in the prior art.

In order to achieve the above object, the first aspect of the utility model provides a battery system, the battery system includes: a mounting shell, the mounting shell has a mounting cavity, and the mounting cavity has a first wall facing in a first direction and the second wall surface; a battery module, the battery module is arranged in the installation cavity; a heat exchange device, the heat exchange device is arranged in the installation cavity, and the heat exchange device is arranged in the first side upwardly located between the battery module and the first wall of the installation cavity, wherein the battery module is in contact with the heat exchange device; and an elastic member, the elastic member is arranged in the first direction Between the heat exchange device and the first wall of the installation cavity and/or between the battery module and the second wall of the installation cavity in the first direction, the elastic member and the second wall of the installation cavity The heat exchange device is in contact with each of the first wall of the installation cavity and/or the elastic member is in contact with each of the battery module and the second wall of the installation cavity, wherein the The elastic member is in compression.

The battery system according to the embodiment of the utility model has the advantages of high heat transfer efficiency, stable performance, long service life and high safety.

Preferably, the elastic member is an elastic plate or an elastic layer.

Preferably, there are multiple battery modules and multiple elastic members, and the plurality of elastic members are arranged at intervals, wherein each battery module is connected with at least two elastic members in the relative to the first direction.

Preferably, the compression amount of the elastic member is 20%-60% and/or the compressive stress of the elastic member is 30 kPa-90 kPa; preferably, the compression amount of the elastic member is 30%-50 % and/or the compressive stress of the elastic member is 45 kPa-75 kPa; more preferably, the compression amount of the elastic member is 40% and/or the compressive stress of the elastic member is 62 kPa.

Preferably, the battery system further includes a first flexible material layer, the first flexible material layer is arranged between the heat exchange device and the first wall of the installation cavity in the first direction, the The first flexible material layer is in contact with the first wall surface of the installation cavity, and the first flexible material layer is in contact with one of the heat exchange device and the elastic member. Preferably, the first flexible material layer is in contact with the first wall surface of the installation cavity. A first fireproof adhesive layer is provided between the first wall of the installation cavity, and a second fireproof adhesive layer is provided between the first flexible material layer and the one of the heat exchange device and the elastic member , More preferably, the first flexible material layer is an insulating layer.

Preferably, a third fireproof adhesive layer is provided between the elastic member and the heat exchange device, a fourth fireproof adhesive layer is provided between the elastic member and the first wall of the installation cavity; and/or the A fifth fireproof adhesive layer is provided between the elastic member and the battery module, and a sixth fireproof adhesive layer is provided between the elastic member and the second wall of the installation cavity.

Preferably, the battery system further includes a second flexible material layer, the second flexible material layer is arranged between the battery module and the heat exchange device in the first direction, and the second flexible material layer The material layer is in contact with each of the battery module and the heat exchange device. Preferably, a seventh fireproof adhesive layer is provided between the second flexible material layer and the battery module, and the second An eighth fireproof adhesive layer is provided between the flexible material layer and the heat exchange device, and more preferably, the second flexible material layer is a heat conduction layer.

Preferably, the battery system further includes a mounting beam, the mounting beam is arranged on the first wall surface, and the battery module is detachably mounted on the mounting beam through fasteners.

Preferably, one of the wall surface of the installation cavity and the heat exchange device is provided with a card slot, and the other of the wall surface of the installation cavity and the heat exchange device is provided with a card protrusion, and the card protrusion fit in the slot.

The second aspect of the utility model provides an electric vehicle, the electric vehicle includes: a vehicle body; and a battery system, the battery system is the battery system according to the first aspect of the utility model, and the battery system is arranged on the physically.

The electric vehicle according to the embodiment of the utility model has the advantages of stable performance and high safety.

Description of drawings

Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;

Fig. 2 is an exploded view of a battery module according to an embodiment of the present invention;

3 is a schematic structural view of a battery of a battery module according to an embodiment of the present invention;

4 is a schematic diagram of a partial structure of a battery of a battery module according to an embodiment of the present invention;

5 is a schematic structural view of the positive busbar and the negative busbar of the battery module according to an embodiment of the present invention;

6 is a schematic structural view of the positive busbar and the negative busbar of the battery module according to an embodiment of the present invention;

Fig. 7 is a partial exploded view of a battery module according to an embodiment of the present invention;

Fig. 8 is an exploded view of the shell of the battery module according to the embodiment of the present invention;

9 is a schematic structural view of a first end cover (second end cover) of a battery module according to an embodiment of the present invention;

Fig. 10 is a partial cross-sectional view of the casing of the battery module according to the embodiment of the present invention;

Fig. 11 is a schematic diagram of a partial structure of a battery module according to an embodiment of the present invention;

Fig. 12 is a schematic diagram of a partial structure of a battery module according to an embodiment of the present invention;

Fig. 13 is a schematic diagram of a partial structure of a battery module according to an embodiment of the present invention;

Fig. 14 is a schematic diagram of a partial structure of a battery module according to an embodiment of the present invention;

Fig. 15 is a partial cross-sectional view of a battery module according to an embodiment of the present invention;

Fig. 16 is a partial structural schematic diagram of a battery system according to an embodiment of the present invention;

Fig. 17 is a partial exploded view of a battery system according to an embodiment of the present invention;

Fig. 18 is a partial exploded view of a battery system according to an embodiment of the present invention;

Fig. 19 is a schematic diagram of a partial structure of an electric vehicle according to an embodiment of the present invention;

Fig. 20 is a partial exploded view of an electric vehicle according to an embodiment of the present invention;

Fig. 21 is a schematic diagram of a partial structure of an electric vehicle according to an embodiment of the present invention;

Fig. 22 is a partial cross-sectional view of a signal transmission part of a battery module according to an embodiment of the present invention;

Fig. 23 is a partial cross-sectional view of the signal transmission part of the battery module according to the embodiment of the present invention.

Detailed ways

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

A battery system 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 16-18 , a battery system 100 according to an embodiment of the present invention includes a mounting case 2 , a battery module 1 , a heat exchange device 3 and an elastic member 4 .

The installation shell 2 has an installation cavity 23, the installation cavity 23 has a first wall surface 231 and a second wall surface 232 opposite in the first direction, the battery module 1 is arranged in the installation cavity 23, and the heat exchange device 3 is arranged in the installation cavity 23 Inside. The heat exchange device 3 is located between the battery module 1 and the first wall surface 231 of the installation cavity 23 along the first direction, and the battery module 1 is in contact with the heat exchange device 3 .

The elastic member 4 is arranged between the heat exchange device 3 and the first wall surface 231 of the installation cavity 23 in the first direction and/or is arranged in the first direction between the battery module 1 and the second wall surface 232 of the installation cavity 23 between. The elastic member 4 is in contact with each of the heat exchange device 3 and the first wall surface 231 of the installation cavity 23 and/or the elastic member 4 is in contact with each of the battery module 1 and the second wall surface 232 of the installation cavity 23 . The elastic member 4 is in a compressed state.

In the battery system 100 according to the embodiment of the present utility model, the elastic member 4 in a compressed state is arranged between the heat exchange device 3 and the first wall 231 of the installation cavity 23 and/or the second wall between the battery module 1 and the installation cavity 23 The elastic member 4 in a compressed state is disposed between the wall surfaces 232 , so that the elastic member 4 can exert elastic force on the heat exchange device 3 toward the battery module 1 and/or apply an elastic force on the battery module 1 toward the heat exchange device 3 .

Therefore, the heat exchange device 3 and the battery module 1 can be closely and effectively contacted, so that heat can be effectively transferred between the battery module 1 and the heat exchange device 3, that is, the heat exchange device 3 can be used to effectively cool or The battery module 1 is heated so that the temperature of the battery module 1 can always be within the working temperature range to ensure that the performance of the battery module 1 and the battery system 100 is stable and always in good working condition.

Therefore, the battery system 100 according to the embodiment of the present invention has the advantages of high heat transfer efficiency, stable performance, long service life, and high safety.

As shown in Figures 1-23, in some embodiments of the present invention, the battery module 1 may include a modular battery assembly 10, a plurality of graphite heat conducting members 151, a graphite soaking plate 152, and a first insulating protection plate 161 , the second insulation protection plate 162 , the third insulation protection plate 163 , the fourth insulation protection plate 164 and the casing 17 .

The casing 17 may include a housing 171, and the housing 171 may have a housing cavity 177, the module battery assembly 10, a plurality of graphite heat conducting members 151, a graphite soaking plate 152, a first insulating protection plate 161, a second insulating protection plate 162, Both the third insulation protection plate 163 and the fourth insulation protection plate 164 can be disposed in the accommodation cavity 177 .

As shown in FIGS. 3 and 4 , the battery module 10 a may include a plurality of batteries 11 , a positive bus bar 12 and a negative bus bar 13 . Each battery 11 may include a body 111, a positive tab 112 and a negative tab 113, the body 111 may have a first end portion and a second end portion opposite in its length direction, and the body 111 may have a first end portion opposite in its width direction. One end face and second end face. Wherein, the length direction of the body 111 is shown by arrow A in FIG. 4 , and the width direction of the body 111 is shown by arrow B in FIG. 4 . Those skilled in the art can understand that the positive tab 112 of the battery 11 can be arranged on the first end of the body 111, and the center line L1 of the positive tab 112 can be located between the first end surface of the body 111 and the first end of the body 111 in the width direction of the body 111. Between the length centerline L2 of the body 111 , the centerline of the positive tab 112 may extend along the length direction of the body 111 . The negative tab 113 of the battery 11 may be provided on the second end of the body 111, and the centerline of the negative tab 113 may be located between the first end face of the body 111 and the length centerline of the body 111 in the width direction of the body 111, The centerline of the negative tab 113 may extend along the length direction of the body 111 .

That is to say, both the centerline of the positive tab 112 and the centerline of the negative tab 113 may deviate from the length centerline of the body 111 to the same side in the width direction of the body 111 . Wherein, the length centerline of the body 111 is the centerline of the body 111 extending along its length direction.

As shown in FIGS. 5 , 6 and 14 , the positive electrode busbar 12 may include a positive electrode row body 121 and a plurality of positive electrode connecting parts 122 , and the positive electrode row body 121 may be located on the center line of the positive electrode ear 112 in the width direction of the body 111 and the second end surface of the body 111 . A plurality of positive electrode connecting parts 122 may be disposed on the positive electrode row body 121 at intervals along the thickness direction of the main body 111 .

The negative bus bar 13 may include a negative electrode bar body 131 and a plurality of negative electrode connecting parts 132 , and the negative electrode bar body 131 may be located between the center line of the negative electrode tab 113 and the second end surface of the body 111 in the width direction of the body 111 . A plurality of negative electrode connecting parts 132 may be disposed on the negative electrode row body 131 at intervals along the thickness direction of the main body 111 .

For example, when the width direction of the main body 111 is consistent (same) with the up-down direction, the positive row body 121 can be located between the center line of the positive tab 112 and the second end surface of the body 111 in the up-down direction, and the negative row body 131 can be located in the up-down direction. The direction may be located between the center line of the negative tab 113 and the second end surface of the body 111 . For a further example, the positive row body 121 may be located above the centerline of the positive tab 112, the positive row body 121 may be located below the second end surface of the body 111, and the negative row body 131 may be located above the centerline of the negative tab 113, The negative row body 131 may be located below the second end surface of the body 111 .

Wherein, the positive tabs 112 of the plurality of batteries 11 can be connected to the plurality of positive connection portions 122 , and the negative tabs 113 of the plurality of batteries 11 can be connected to the plurality of negative connection portions 132 so as to connect the plurality of batteries 11 in parallel.

The center line of the positive tab and the center line of the negative tab of the existing battery coincide with the length center line of the battery body. Therefore, the space on both sides of the positive pole tab and the negative pole tab of the existing battery is small, resulting in a small space for accommodating the positive pole bus bar and the negative pole bus bar, that is, the size of the positive pole bus bar and the negative pole bus bar. Some batteries have lower energy density.

By making the center line of the positive tab 112 and the center line of the negative tab 113 be located between the first end face of the body 111 and the length center line of the body 111 in the width direction of the body 111, the distance between the positive tab 112 and the center line of the body 111 can be enlarged. The distance between the second end surfaces of the body 111 and the distance between the negative tab 113 and the second end surface of the body 111 . In other words, the distance between the positive tab 112 and the second end surface of the body 111 can be greater than the distance between the positive tab and the end surface (equivalent to the second end surface) of the existing battery, and the distance between the negative tab 113 and the second end surface of the body 111 The distance between them may be greater than the distance between the negative tab and the end surface (equivalent to the second end surface) of the existing battery.

Therefore, the battery module 10 a has a larger space for accommodating the positive electrode row body 121 and a larger space for accommodating the negative electrode row body 131 , so that the size of the positive electrode row body 121 and the size of the negative electrode row body 131 can be increased. That is to say, the size of the positive electrode row body 121 may be larger than that of the existing battery positive electrode row body, and the size of the negative electrode row body 131 may be larger than the size of the existing battery negative electrode row body. Thus, the overcurrent capability of the positive busbar 12 (positive pole body 121) and the overcurrent capability of the negative pole busbar 13 (negative pole body 131) can be improved, thereby improving the energy density of the battery module 10a, and further improving the modular battery assembly. 10 and the energy density of the battery module 1.

Therefore, the modular battery assembly 10 and the battery module 1 according to the embodiment of the present invention have advantages such as high energy density.

Specifically, the width of the positive electrode row body 121 (the size of the positive electrode row body 121 in the width direction of the main body 111) can be greater than the width of the positive electrode row body of the existing battery, and the width of the negative electrode row body 131 (the width of the negative electrode row body 131 The dimension in the width direction of the main body 111) may be greater than the width of the negative electrode row body of the existing battery.

Preferably, the centerline of the positive tab 112 and the length centerline of the body 111 are separated by a first distance S1 in the width direction of the body 111 , and the centerline of the negative tab 113 and the length centerline of the body 111 are at a distance S1 apart from the body 111 . The second distance is separated in the width direction. Wherein, the ratio of the first distance S1 to the width of the main body 111 is greater than zero and less than or equal to 0.3, and the ratio of the second distance to the width of the main body 111 is greater than zero and less than or equal to 0.3. More preferably, the ratio of the first distance S1 to the width of the body 111 may be greater than or equal to 0.1 and less than or equal to 0.3, and the ratio of the second distance to the width of the body 111 may be greater than or equal to 0.1 and less than or equal to 0.3.

Wherein, the larger the ratio of the first distance S1 to the width of the body 111 and the larger the ratio of the second distance to the width of the body 111 , the greater the energy density of the battery module 10 a , the modular battery assembly 10 and the battery module 1 . In other words, the greater the first distance S1 and the greater the second distance, the greater the energy density of the battery module 10 a , the modular battery assembly 10 and the battery module set 1 . The first distance S1 may be equal to the second distance, that is, the centerline of the positive tab 112 and the centerline of the negative tab 113 may coincide.

The modular battery assembly 10 may include a first PCB board 14 , a second PCB board (not shown in the figure) and a plurality of battery modules 10a, and the modular battery assembly 10 may be disposed in the cavity 177 of the casing 17 of the battery module 1 .

Preferably, multiple battery modules 10a can be connected in series. The positive bus bar 12 of one of the adjacent two battery modules 10a can be connected with the negative bus bar 13 of the other of the two adjacent battery modules 10a, so that the two adjacent battery modules 10a can be connected in series, as shown in FIG. 14 Show.

The positive busbar 12 and the negative busbar 13 that are connected (eg, electrically connected) can form a series row 12a, that is, the series row 12a can be connected to the positive tab 112 of each battery 11 of one of two adjacent battery modules 10a and the adjacent positive tab 112. The negative tab 113 of each battery 11 of the other of the two battery modules 10a is connected (eg, electrically connected). Preferably, the battery module 1 may include multiple series rows 12a, that is, the battery module 1 may include at least three battery modules 10a.

The first PCB board 14 may be connected to a part of the plurality of series rows 12a, and the second PCB board may be connected to the remaining parts of the plurality of series rows 12a. In other words, the first PCB board 14 can be located (in the length direction of the body 111) on one side of the plurality of battery modules 10a (as shown in FIG. 2 ), and the second PCB board can be located (in the length direction of the body 111) on a plurality of The other side of the battery module 10a.

The positive electrode bus bar 12 can be made of a first conductive material (such as aluminum), the negative electrode bus bar 13 can include a first substrate and a first connection layer arranged on the first substrate, and the first substrate can be made of the first conductive material. material, the first connection layer may be made of a second conductive material (such as copper) different from the first conductive material.

The negative tab 113 can be made of the second conductive material, and the positive tab 112 can be made of the first conductive material. Wherein, the negative tab 113 can be welded on the first connection layer, and the positive tab 112 can be welded on the positive bus bar 12 . Since the positive tab 112 and the positive bus bar 12 are made of the first conductive material, and the negative tab 113 and the first connection layer are both made of the second conductive material, electrochemical corrosion can be avoided.

Preferably, the first base body of one of the two adjacent battery modules 10a and the positive electrode bus bar 12 of the other of the two adjacent battery modules 10a can be integrally formed. Thus, the structures of the battery assembly 10 and the battery module 1 can be made more reasonable.

In an embodiment of the present invention, the positive electrode row body 121 may include a first part and a second part, and the first part and the second part may be opposite to and spaced apart from each other in the width direction of the main body 111 . The first end of each positive connection part 122 can be connected to the first part, the second end of each positive connection part 122 can be connected to the second part, and a positive ear can be defined between two adjacent positive connection parts 122. Groove through. The negative electrode row body 131 may include a third portion and a fourth portion, the third portion is opposite to and spaced apart from the fourth portion in the width direction of the body 111 . The first end of each negative connection part 132 can be connected to the third part, the second end of each negative connection part 132 can be connected to the fourth part, and a negative pole can be defined between two adjacent negative connection parts 132. Ear piercing grooves.

When the positive electrode bus bar 12 and the negative electrode bus bar 13 are assembled with the plurality of batteries 11 , both the positive electrode bus bar 12 and the negative electrode bus bar 13 can move relative to the plurality of batteries 11 along the length direction of the body 111 . For example, both the positive electrode bus bar 12 and the negative electrode bus bar 13 can move relative to the plurality of batteries 11 in the horizontal direction. Wherein, there may be a positive ear 112 passing through the positive ear piercing slot of the positive bus bar 12 , and a negative ear 113 may pass through the negative ear piercing slot of the negative bus bar 13 .

By making the positive electrode row body 121 include the first part and the second part, and making the negative electrode row body 131 include the third part and the fourth part, the space for accommodating the positive electrode row body 121 of the battery module 10a can be more fully utilized. space and a space for accommodating the negative electrode row body 131 . This can further improve the overcurrent capability of the positive busbar 12 (positive electrode row body 121) and the overcurrent capability of the negative electrode busbar 13 (negative electrode row body 131), thereby further improving the battery module 10a, the modular battery assembly 10 and the battery module. Energy Density of Group 1.

As shown in Fig. 5, Fig. 6 and Fig. 14, in another embodiment of the present utility model, the first end of each positive electrode connection part 122 can be connected with the positive electrode row body 121, between two adjacent positive electrode connection parts 122 Positive electrode ear piercing grooves 123 may be defined between them, and the end of each positive electrode ear piercing groove 123 away from the positive electrode row body 121 may be open. The first end of each negative electrode connection part 132 can be connected with the negative electrode row body 131, and a negative electrode ear piercing groove 133 can be defined between two adjacent negative electrode connecting parts 132, and each negative electrode ear piercing groove 133 is far away from the negative electrode row body 131. ends can be open. In other words, both the positive electrode bus bar 12 and the negative electrode bus bar 13 may be substantially comb-shaped.

When the positive bus bar 12 and the negative bus bar 13 are assembled with the plurality of batteries 11 , both the positive bus bar 12 and the negative bus bar 13 can move relative to the plurality of batteries 11 along the width direction of the body 111 . For example, both the positive electrode bus bar 12 and the negative electrode bus bar 13 can move relative to the plurality of batteries 11 in an up and down direction. Wherein, there may be a positive ear piercing slot 123 passing through the positive bus bar 12 with the positive tab 112 , and a negative ear piercing slot 133 passing through the negative bus bar 13 with the negative tab 113 .

Since both the positive tab 112 and the negative tab 113 have certain flexibility, the positive busbar 12 and the negative busbar 13 are moved relative to the plurality of batteries 11 along the width direction of the main body 111, so that the positive busbars can be connected more easily and quickly. The row 12, the negative electrode bus bar 13 and the plurality of batteries 11 are assembled together, thereby reducing the difficulty of assembling the battery module 10a and improving the assembly efficiency of the battery module 10a.

Specifically, during the battery stacking process, both the positive tab 112 and the negative tab 113 may, or even inevitably, bend and wrinkle. The farther away from the body 111 the positive pole ear 112 and the negative pole ear 113 are, the greater the degree of bending and wrinkles will be. The portion of the ear 113 adjacent to the body 111) will not be bent or wrinkled.

If the end of the positive electrode ear piercing groove 123 away from the positive electrode row body 121 is not open, and the end of each negative electrode ear piercing groove 133 away from the negative electrode row body 131 is not open, then the positive electrode bus bar 12, the negative electrode bus bar When 13 and a plurality of batteries 11 are assembled together, the positive bus bar 12 and the negative bus bar 13 can only be moved relative to the main body 111 along the length direction of the main body 111, that is, the positive bus bar 12 and the negative bus bar 13 move toward the direction adjacent to the main body 111. move. In other words, the positive ear piercing slot 123 passes through the part of the positive tab 112 away from the body 111 first, and the negative ear piercing slot 133 passes through the part of the negative tab 113 away from the body 111 first. In order to ensure that the positive electrode bus bar 12 and the negative electrode bus bar 13 have a certain welding area, the width of the positive electrode ear piercing groove 123 and the width of the negative electrode ear piercing groove 133 are often smaller. As a result, the bent and wrinkled positive tab 112 cannot pass through the positive ear piercing slot 123 , and the bent, wrinkled negative tab 113 cannot pass through the negative ear piercing slot 133 .

By making the end of the positive ear piercing groove 123 away from the positive pole body 121 open, and the end of each negative ear piercing groove 133 away from the negative pole body 131 open, the positive ear piercing groove 123 can be opened from the positive pole ear 112. Insert at the root for assembly, so that the negative ear piercing groove 133 can be inserted from the root of the negative electrode ear 113 for assembly. In this way, the bending and wrinkling of the positive tab 112 and the negative tab 113 can be avoided from adversely affecting the assembly of the positive busbar 12 and the negative busbar 13, thereby reducing the difficulty of assembling the battery module 10a and improving the assembly efficiency of the battery module 10a.

Preferably, there may be a positive connection portion 122 between two adjacent positive tabs 112 , and each of the two adjacent positive tabs 112 may be connected to the one positive connection portion 122 . There may be a negative connection portion 132 between two adjacent negative tabs 113 , and each of the two adjacent negative tabs 113 may be connected to the one negative connection portion 132 .

More preferably, each positive tab 112 may have a positive bent portion, and the positive bent portion of each of two adjacent positive tabs 112 may be connected to the one positive connecting portion 122, and each negative tab 113 may have The negative electrode bending portion, the negative electrode bending portion of each of the two adjacent negative electrode tabs 113 may be connected to the one negative electrode connecting portion 132 .

Those skilled in the art can understand that an insulating support may be provided between the positive bus bar 12 and the bodies 111 of the batteries 11 , and an insulating support may be provided between the negative bus bar 13 and the bodies 111 of the batteries 11 . The insulating bracket may be known and has nothing to do with the invention of the present application, so it will not be described in detail.

As shown in FIG. 2, the battery module 1 may further include a first PCB board 14 and a second PCB board (not shown in the figure), the first PCB board 14 may be connected to a part of a plurality of series rows 12a, and the first PCB board 14 may be connected to a part of a plurality of series rows 12a. A second PCB board can be connected to the rest of the plurality of series rows 12a. Specifically, the part of the plurality of series rows 12a may be located on the first side of the body 111 of the plurality of batteries 11, and the remaining part of the plurality of series rows 12a may be located at the second side of the body 111 of the plurality of batteries 11, The first side of the body 111 is opposite to the second side of the body 111 in the length direction (eg front-rear direction) of the body 111 .

As shown in FIG. 2 , the battery module 1 may further include a signal transmission part 19 . As shown in FIG. 22 and FIG. 23 , the signal transmission part 19 may include a collecting part 191 , a receiving part 192 , a plurality of first contact parts 1913 , a plurality of second contact parts 1923 and a transmission part 195 . The collection part 191 may be provided with one of the plurality of first plugs 1911 and the plurality of first slots 1912 , and the receiving part 192 may be provided with one of the plurality of second plugs 1921 and the plurality of second slots 1922 .

A plurality of first contact portions 1913 can be arranged in a plurality of first slots 1912 in a one-to-one correspondence, and a plurality of second contact portions 1923 can be arranged in a plurality of second slots 1922 in a one-to-one correspondence. In other words, the number of first contact portions 1913 may be equal to the number of first slots 1912, the number of second contact portions 1923 may be equal to the number of second slots 1922, and each first slot 1912 is provided with a first contact Each second slot 1922 is provided with a second contact portion 1923 .

The first end of the transmission part 195 can be provided with the other one of the plurality of first pins 1911 and the plurality of first slots 1912, and the second end of the transmission part 195 can be provided with a plurality of second pins 1921 and a plurality of first slots 1912. The other of the two slots 1922. A plurality of first pins 1911 can fit in a plurality of first slots 1912 in one-to-one correspondence, a plurality of first pins 1911 can be in contact with a plurality of first contact portions 1913 in a one-to-one correspondence, and a plurality of second pins 1921 can be The plurality of second slots 1922 are fitted in a one-to-one correspondence, and the plurality of second pins 1921 can be in contact with the plurality of second contact portions 1923 in a one-to-one correspondence.

That is to say, the number of the first pins 1911 can be equal to the number of the first slots 1912, the number of the second pins 1921 can be equal to the number of the second slots 1922, and the first pins 1911 fitted in the first slots 1912 can be In contact with the first contact portion 1913 in the first slot 1912 , the second pin 1921 fitted in the second slot 1922 can contact with the second contact portion 1923 in the second slot 1922 .

Wherein, each first slot 1912 can be provided with a first protective layer 196, and the first protective layer 196 can cover the corresponding contact between the first pin 1911 and the first contact portion 1913, and each second slot 1922 can A second protection layer 197 may be provided, and the second protection layer 197 may cover the corresponding contacts of the second pins 1921 and the second contact portions 1923 .

The corresponding first pin 1911 and the first contact portion 1913 refer to: the first pin 1911 and the first contact portion 1913 located in the same first slot 1912 as the first protection layer 196; the corresponding second pin 1921 and the first contact portion 1913 The second contact portion 1923 refers to: the second pin 1921 and the second contact portion 1923 located in the same second slot 1922 as the second protective layer 197 .

By setting the first protective layer 196 covering the contact of the corresponding first pin 1911 and the first contact portion 1913 and the second protective layer 197 covering the contact of the corresponding second pin 1921 and the second contact portion 1923, thus in When filling the insulating glue into the accommodating cavity 177 of the battery module 1 , the first protective layer 196 and the second protective layer 197 can be used to block the insulating glue.

This can prevent the insulating glue from flushing the connected first pin 1911 and the first contact portion 1913 and the second pin 1921 and the second contact portion 1923, that is, it can prevent the insulating glue from flowing to the first pin 1911 and the first contact. parts 1913 and between the second pin 1921 and the second contact part 1923, so as to prevent disconnection of the first pin 1911 and the first contact part 1913 and disconnection of the second pin 1921 and the second contact part 1923.

Therefore, the first pin 1911 and the first contact portion 1913 and the second pin 1921 and the second contact portion 1923 can be stably connected, that is, effectively connected together, so that the battery module 1 can be collected stably and effectively. The voltage signal of each battery 11.

As shown in FIG. 22 , the first protective layer 196 can be arranged at the opening of the corresponding first slot 1912 , and the first protective layer 196 can fill the space between the wall of the corresponding first slot 1912 and the corresponding first pin 1911 The second protective layer 197 can be provided at the opening of the corresponding second slot 1922 , and the second protective layer 197 can fill the gap between the wall of the corresponding second slot 1922 and the corresponding second pin 1921 .

Wherein, the corresponding first slot 1912 refers to the first slot 1912 filled with the first protective layer 196, and the corresponding first pin 1911 refers to the first slot 1912 that is filled with the first protective layer 196. The first plug 1911, the corresponding second slot 1922 refers to the second slot 1922 filled with the second protective layer 197, and the corresponding second plug 1921 refers to the second slot filled with the second protective layer 197 Second latch 1921 within 1922.

That is to say, the first protective layer 196 can be sleeved on the first pin 1911, the first protective layer 196 can block the opening of the first slot 1912, and the first protective layer 196 can be connected with the corresponding first pin 1911 and the first pin 1911. Contacts of a contact portion 1913 are spaced apart. The second protective layer 197 can be sleeved on the second pin 1921, the second protective layer 197 can block the opening of the second slot 1922, and the second protective layer 197 can be connected with the corresponding second pin 1921 and the second contact portion 1923. The contacts are spaced apart.

Thus the first protective layer 196 can prevent the insulating glue from entering the first slot 1912, and the second protective layer 197 can prevent the insulating glue from entering the second slot 1922, thereby preventing the insulating glue from connecting the first slots 1912 and 1922. The pin 1911 and the first contact portion 1913 and the second pin 1921 and the second contact portion 1923 are punched apart so as to ensure that the first pin 1911 and the first contact portion 1913 and the second pin 1921 and the second contact portion 1923 are stably and effectively connected.

As shown in FIG. 23 , the first protective layer 196 may be in contact with the corresponding first pin 1911 and the first contact portion 1913 , and the second protective layer 197 may be in contact with the corresponding second pin 1921 and the second contact portion 1923 . Wherein, the corresponding first contact portion 1913 refers to the first contact portion 1913 disposed in the same first slot 1912 as the first protective layer 196, and the corresponding second contact portion 1923 refers to the first contact portion 1913 disposed in the same first slot 1912 as the first protective layer 196. The second contact portion 1923 in the same second slot 1922 .

Therefore, the first protective layer 196 can prevent the insulating glue from contacting the corresponding contact between the first pin 1911 and the first contact portion 1913, and the second protective layer 197 can prevent the insulating glue from contacting the corresponding second pin 1921 and the second contact portion 1923. contact, so as to prevent the insulating glue from punching the connected first pin 1911 and first contact portion 1913 and the second pin 1921 and second contact portion 1923, so as to ensure that the first pin 1911 and the first contact portion 1913 And the second pin 1921 and the second contact portion 1923 are stably and effectively connected together.

Each first pin 1911 of the signal transmission part 19 or the first contact part 1913 in each first slot 1912 can be connected to the first PCB board 141, and each second pin 1921 or every second pin of the signal transmission part 19 The second contact portion 1923 in the second slot 1922 can be connected with the second PCB board 142 . Thus, the signal transmission part 19 can transmit the voltage signal collected by one of the first PCB board 141 and the second PCB board 142 to the other of the first PCB board 141 and the second PCB board 142 . Wherein, the signal transmission part 19 is used to collect the voltage signal and temperature signal of the battery pack (including multiple batteries 11 ), and the collection points of the temperature signal can be on the first PCB board 141 and the second PCB board 142 .

Preferably, the transmission part 195 may have flexibility. In this way, the transmission part 195 can be connected with the collecting part 191 and the receiving part 192 more conveniently and easily.

In the existing battery module, a heat conduction member is provided between two adjacent batteries, so as to conduct the heat of the battery to the bottom of the battery module through the heat conduction member, and finally conduct the heat from the bottom of the battery module through a liquid cooling device. However, the existing battery modules have the defect of unstable performance.

After in-depth research, the inventors found that: although the heat generated by each battery is exported by using the heat conducting member, because the positions of the multiple batteries in the battery module are different, the heat dissipation conditions of the multiple batteries are different, resulting in There is still a temperature difference among the batteries, that is, the temperature of some batteries is too high, which will lead to unstable performance of the battery, and then lead to unstable performance of the battery module.

As shown in Figures 11-13, in one embodiment of the present utility model, each graphite heat-conducting member 151 can have a first heat-conducting flat part 1511 and a second heat-conducting flat part 1512, and the first heat-conducting flat part 1511 can be perpendicular to The second heat conducting plate part 1512 . Wherein, a first heat-conducting plate portion 1511 may be provided between two adjacent batteries 11 , and each first heat-conducting plate portion 1511 may be in contact with each of two adjacent batteries 11 .

The graphite soaking plate 152 can be parallel to the second heat conducting flat part 1512 of each of the plurality of graphite heat conducting parts 151, and the graphite soaking plate 152 can be connected with the second heat conducting flat part 1512 of each of the plurality of graphite heat conducting parts 151 touch. Wherein, the second heat conduction plate portion 1512 of each of the plurality of graphite heat conduction members 151 can be located between the graphite heat chamber 152 and each battery 11 in a direction (such as the first direction) perpendicular to the graphite heat chamber 152 between. Thus, the graphite vapor chamber 152 can be in contact with each battery 11 through a plurality of graphite heat conducting members 151 .

According to the battery module 1 of the embodiment of the present invention, a plurality of graphite heat conduction members 151 in contact with the batteries 11 and a graphite vapor chamber 152 in contact with the plurality of graphite heat conduction members 151 can be arranged so that a plurality of batteries 11 can pass through a plurality of The graphite heat conduction member 151 is in contact with the graphite soaking plate 152, so that the graphite soaking plate 152 can be used to transfer heat between the batteries 11 with temperature differences, so as to balance the temperature of the multiple batteries 11 and eliminate the gap between the multiple batteries 11. Even if the temperature of the plurality of graphite heat-conducting elements 151 is more consistent and uniform, the temperature of the plurality of batteries 11 can be more consistent and uniform, so as to achieve the balance of the internal temperature field temperature of the battery module 1 .

The plurality of batteries 11 can be in contact with the second heat-conducting plate parts 1512 of the plurality of graphite heat-conducting members 151 in one-to-one correspondence. Thus, the structure of the battery module 1 can be made more reasonable. Double-sided adhesive may be filled between adjacent batteries 11 and the first heat-conducting plate portion 1511 .

Preferably, the thickness of the graphite vapor chamber 152 is 0.04mm-0.5mm, and the thickness of the second heat-conducting flat part 1512 of each of the graphite heat-conducting elements 151 is 0.04mm-0.5mm.

The casing 171 can be integrally formed, preferably, the casing 171 can be an aluminum shell integrally stretched and formed. The accommodating chamber 177 may have a first wall surface (for example, a top wall surface) and a second wall surface (for example, a bottom wall surface) opposite in a first direction, and a third wall surface (for example, a front wall surface) and a fourth wall surface (for example, a front wall surface) opposite in a second direction. For example, the rear wall surface), the first direction may be perpendicular to the second direction.

The accommodating chamber 177 may have a first end and a second end opposite in a third direction, the first end and the second end of the accommodating chamber 177 may be open, and the third direction may be perpendicular to the first direction and the second end. each of the two directions.

Specifically, the first direction, the width direction of the body 111 and the height direction of the housing 171 may be consistent (identical) with each other, and the second direction, the length direction of the body 111 and the width direction of the housing 171 may be consistent (identical) with each other. , the third direction, the thickness direction of the body 111 and the length direction of the case 171 may coincide with each other (same). More specifically, the first direction may be an up-down direction, the second direction may be a front-rear direction, and the third direction may be a left-right direction. Wherein, the up-down direction is shown by arrow C in FIG. 2 , the front-back direction is shown by arrow D in FIG. 2 , and the left-right direction is shown by arrow E in FIG. 2 .

As shown in FIG. 2 and FIG. 7 , each of the first insulation protection plate 161 and the second insulation protection plate 162 may be provided on the module battery assembly 10, and the first insulation protection plate 161 may be located in the first direction. Between the first wall and the module battery assembly 10 , the second insulation protection plate 162 may be located between the second wall and the module battery assembly 10 in the first direction.

Each of the third insulation protection plate 163 and the fourth insulation protection plate 164 can be connected with the first insulation protection plate 161, and the third insulation protection plate 163 can be located between the third wall surface and the module battery assembly 10 in the second direction. In between, the fourth insulating protection plate 164 may be located between the fourth wall and the module battery assembly 10 in the second direction.

Since the first end and the second end of the receiving chamber 177 are open, the modular battery assembly 10 can move along the third direction when the modular battery assembly 10 is loaded into the receiving chamber 177 .

By providing the first insulation protection plate 161, the second insulation protection plate 162, the third insulation protection plate 163 and the fourth insulation protection plate 161 between the modular battery assembly 10 and the wall surface (the first wall surface to the fourth wall surface) of the accommodating cavity 177 The protective plate 164, so that in the process of installing the modular battery assembly 10 into the accommodating cavity 177, not only the first insulating protective plate 161, the second insulating protective plate 162, the third insulating protective plate 163 and the fourth insulating protective plate can be used 164 protects the modular battery assembly 10 so as to prevent the shell 171 from causing damage to the sealing edge of the modular battery assembly 10, and the first insulating protection plate 161, the second insulating protection plate 162, the third insulating protection plate 163 and the second insulating protection plate 163 can be used. The four insulation protection plates 164 insulate between the modular battery assembly 10 and the housing 171 , so as to further improve the insulation performance between the modular battery assembly 10 and the housing 171 , that is, to further improve the insulation performance of the battery module 1 .

Preferably, the first insulation protection board 161 , the second insulation protection board 162 , the third insulation protection board 163 and the fourth insulation protection board 164 can all be PC insulation protection boards (sheets, layers).

A first adhesive layer (such as double-sided tape) may be provided between the first insulating protection plate 161 and the modular battery assembly 10, and a second adhesive layer (such as double-sided adhesive tape) may be provided between the second insulating protective plate 162 and the modular battery assembly 10. such as double-sided tape). In other words, the first insulating protection plate 161 can be bonded to (the upper surface of) the module battery assembly 10 through the first adhesive layer, and the second insulating protection plate 162 can be bonded to the module battery assembly through the second adhesive layer. 10 (the lower surface).

2 and 7, the first insulating protection plate 161 may have a first edge and a second edge in the second direction, the edge of the third insulating protection plate 163 may be connected with the first edge, and the fourth insulating protection plate 163 may have a first edge and a second edge. The edge of the protective plate 164 may be connected to the second edge. Wherein, each of the third insulation protection plate 163 and the fourth insulation protection plate 164 may extend from the first insulation protection plate 161 to a direction adjacent to the second insulation protection plate 162 . Thus, the structure of the battery module 1 can be made more reasonable.

Specifically, the upper edge of the third insulation protection plate 163 may be connected to the front edge of the first insulation protection plate 161 , and the upper edge of the fourth insulation protection plate 164 may be connected to the rear edge of the first insulation protection plate 161 .

Preferably, the first insulation protection plate 161 , the third insulation protection plate 163 and the fourth insulation protection plate 164 can be integrally formed. Therefore, the manufacturing difficulty and manufacturing cost of the battery module 1 can be reduced.

As shown in FIG. 15 , in some embodiments of the present invention, the battery module 1 may further include an insulating adhesive layer 18 , and the insulating adhesive layer 18 is filled in the accommodating cavity 177 .

By filling the insulating adhesive layer 18 in the accommodation cavity 177, not only can the various parts of the battery module 1 be prevented from loosening under long-term vibration, so that the service life of the battery module 1 can be greatly extended, but also water and dust can be prevented. etc. into the accommodating chamber 177 so as to improve the insulation performance and protection level of the battery module 1 .

The insulating glue layer 18 can be formed by insulating glue, and the insulating glue can contain isocyanate prepolymer, chain extender and carbonate, and the weight ratio of the isocyanate prepolymer, chain extender and carbonate is 100:20-120 : 0.5-25, the number average molecular weight of the isocyanate prepolymer is 2000-4500.

The insulating glue may also contain isocyanate prepolymer, chain extender and polymer alcohol, the number average molecular weight of the isocyanate prepolymer is 1000-4500, and the number average molecular weight of the polymer alcohol is 200-4000.

Preferably, an insulating adhesive layer 18 may be filled between two adjacent batteries 11, an insulating adhesive layer 18 may be filled between the first PCB board 14 and the plurality of batteries 11, and an insulating adhesive layer 18 may be filled between the second PCB board and the plurality of batteries 11. The space may be filled with an insulating glue layer 18 . In this way, not only can further prevent the various parts of the battery module 1 from loosening under long-term vibration, but also can further improve the insulation performance and protection level of the battery module 1 .

As shown in FIG. 15 , an insulating glue layer 18 may be filled between the first insulating protection plate 161 (insulation protection plate) and the first wall surface of the accommodation cavity 177, and the second insulating protection plate 162 and the second wall of the accommodation cavity 177 An insulating glue layer 18 can be filled between the wall surfaces, an insulating glue layer 18 can be filled between the third insulating protection plate 163 (first insulating protection side plate) and the third wall surface of the accommodating cavity 177, and the fourth insulating protecting plate 164 An insulating glue layer 18 may be filled between (the second insulating protection side plate) and the fourth wall surface of the accommodating cavity 177 . In this way, not only can further prevent the various parts of the battery module 1 from loosening under long-term vibration, but also can further improve the insulation performance and protection level of the battery module 1 .

The first PCB board 14 can be located between the third insulating protection board 163 and the plurality of batteries 11 in the second direction, and the second PCB board can be located between the fourth insulating protection board 164 and the plurality of batteries in the second direction. 11, wherein an insulating adhesive layer 18 may be filled between the first PCB board 14 and the third insulating protection board 163, and an insulating adhesive layer 18 may be filled between the second PCB board and the fourth insulating protection board 164. In this way, not only can further prevent the various parts of the battery module 1 from loosening under long-term vibration, but also can further improve the insulation performance and protection level of the battery module 1 .

Preferably, the insulating glue layer 18 can fill the containing cavity 177 . This can not only further prevent the various parts of the battery module 1 from loosening under long-term vibration, but also prevent water, dust, etc. from entering the accommodating cavity 177, so as to further improve the insulation performance and protection level of the battery module 1 .

As shown in FIGS. 1 , 8 and 10 , the housing 171 may have a first end and a second end opposite in the third direction, and the housing 17 may further include a first end cover 172 and a second end cover 173 . The first end cover 172 can be disposed on the first end of the housing 171 , and the first end cover 172 can cover the first end of the accommodating cavity 177 . The second end cover 173 can be disposed on the second end of the housing 171 , and the second end cover 173 can cover the second end of the receiving cavity 177 . Wherein, at least one of the first end cover 172 and the second end cover 173 may be provided with a glue filling hole 174 communicating with the accommodating cavity 177 . In this way, insulating glue can be poured into the accommodation cavity 177 through the glue filling hole 174 to form the insulating glue layer 18 .

Preferably, the casing 17 may further include a first sealing ring 175 and a second sealing ring 176, and the first sealing ring 175 may be arranged between the first end cover 172 and the first end of the housing 171, so as to seal the accommodating chamber At the first end of 177 , the second sealing ring 176 can be disposed between the second end cover 173 and the second end of the housing 171 to seal the second end of the receiving chamber 177 . Wherein, the first sealing ring 175 can be arranged around the first end of the accommodation chamber 177 , and the second sealing ring 176 can be arranged around the second end of the accommodation chamber 177 .

Thus, the housing 171, the first end cover 172, the second end cover 173, the first sealing ring 175 and the second sealing ring 176 can define a sealed accommodating chamber 177. When pouring the insulating glue, the insulating glue can be prevented from flowing out of the accommodating cavity 177 .

Moreover, by providing the first sealing ring 175 and the second sealing ring 176, there is no need to use hot melt adhesive to seal the casing 17, thereby reducing the manufacturing cost of the battery module 1, improving the manufacturing efficiency of the battery module 1, reducing Labor cost.

As shown in FIG. 10 , in an example of the present invention, a first card slot may be provided on the first surface of the first end cover 172 opposite to the housing 171 , and the first end of the housing 171 and the A second card slot may be provided on the opposite first surface of the first end cover 172 . For example, the first card slot may be provided on the right side of the first end cover 172 , and the second card slot may be provided on the left side of the housing 171 .

The first sealing ring 175 may include a first sealing ring 1751 and a second sealing ring 1752 . A part of the first seal ring 1751 can be engaged in the first groove, another part of the first seal ring 1751 can be engaged in the second groove, and the extension direction of the first seal ring 1751 can be aligned with the third groove. The direction (the longitudinal direction of the housing 171) is consistent (same).

The outer peripheral surface of the second sealing ring 1752 may be disposed on the inner peripheral surface of the first sealing ring 1751 , and the extending direction of the second sealing ring 1752 may be perpendicular to the extending direction of the first sealing ring 1751 . Wherein, the second sealing ring 1752 can be arranged between the first end cover 172 and the first end of the housing 171, and the second sealing ring 1752 can be connected with the first surface of the first end cover 172 and the first end of the housing 171. Each of the first surfaces of the first end is in contact. As a result, the tightness of the receiving chamber 177 can be further improved.

Preferably, a first sealant layer may be provided between the second sealing ring 1752 and the first surface of the first end cover 172 , and the second sealing ring 1752 and the first surface of the first end of the housing 171 There may be a second sealant layer between them.

As shown in FIG. 10 , the first surface of the second end cover 173 opposite to the housing 171 may be provided with a third slot, and the first surface of the second end of the housing 171 opposite to the second end cover 173 A fourth card slot may be provided on the surface. For example, the third card slot may be provided on the left side of the second end cover 173 , and the fourth card slot may be provided on the right side of the housing 171 .

The second sealing ring 176 may include a third sealing ring 1761 and a fourth sealing ring 1762 . A part of the third sealing ring 1761 can be engaged in the third groove, and another part of the third sealing ring 1761 can be engaged in the fourth groove. The extending direction of the third sealing ring 1761 may be consistent (identical) with the third direction (the length direction of the housing 171 ).

The outer peripheral surface of the fourth sealing ring 1762 may be disposed on the inner peripheral surface of the third sealing ring 1761 , and the extending direction of the fourth sealing ring 1762 may be perpendicular to the extending direction of the third sealing ring 1761 . Wherein, the fourth sealing ring 1762 can be arranged between the second end cover 173 and the second end of the housing 171, and the fourth sealing ring 1762 can be connected with the first surface of the second end cover 173 and the second end of the housing 171. Each of the first surfaces of the second end is in contact. As a result, the tightness of the receiving chamber 177 can be further improved.

Preferably, a third sealant layer may be provided between the fourth sealing ring 1762 and the first surface of the second end cover 173 , and the fourth sealing ring 1762 and the first surface of the second end of the housing 171 There may be a fourth sealant layer between them.

As shown in FIG. 1 , FIG. 7 and FIG. 8 , at least one glue overflow port 178 is provided on the housing 171 . Therefore, not only can the air in the housing cavity 177 be discharged in time, so as to prevent the pressure in the housing 17 from being too high during the process of pouring the insulating glue, but also the insulating glue layer 18 can be judged by whether the insulating glue flows out of the overflow port 178 Whether the accommodating cavity 177 is filled is to determine whether the insulating glue is filled with the accommodating cavity 177 .

Preferably, at least one of the first wall surface and the second wall surface of the receiving cavity 177 may be provided with a glue overflow port 178 , and the glue overflow port 178 may pass through along the first direction. Specifically, a plurality of glue overflow openings 178 may be provided on the upper wall surface (the first wall surface) of the accommodating chamber 177 , and each glue overflow opening 178 may pass through the top plate of the casing 171 in the vertical direction.

As shown in FIGS. 8 and 9 , each of the first end cap 172 and the second end cap 173 may include a cover body 1721, and the cover body 1721 may have an opposite third end cap in its thickness direction (eg, the third direction). One end surface 1725 and a second end surface.

The cover body 1721 of at least one of the first end cover 172 and the second end cover 173 is provided with a glue filling hole 174 penetrating along its thickness direction (for example, the third direction), the first end cover 172 and the second end cover The first end surface 1725 of the at least one cover body 1721 in 173 can be provided with a plurality of glue guide grooves 1724, and the plurality of glue guide grooves 1724 can be arranged radially relative to the glue filling hole 174, and the first glue guide groove 1724 One end (for example, the inner end) can cooperate with the potting hole 174 .

By setting a plurality of glue guide grooves 1724 arranged radially relative to the glue filling holes 174 on the cover body 1721, the insulating glue entering the housing 17 from the glue filling holes 174 can enter the plurality of glue guide grooves 1724, and Flow along a plurality of glue guide grooves 1724, so that the insulating glue entering the housing 17 from the glue filling hole 174 can flow along multiple directions (extension directions of the plurality of glue guide grooves 1724) at the same time, thereby enabling The insulating glue entering the casing 17 through the glue filling hole 174 is evenly distributed into the accommodating cavity 177 .

Since the insulating glue entering the shell 17 from the glue filling hole 174 can flow in multiple directions at the same time, not only can the insulating glue be injected into the glue filling hole 174 at a faster speed, but also the insulating glue can be filled more quickly to accommodate Cavity 177, thereby improving the glue filling speed and glue filling efficiency.

The first end of each glue guide groove 1724 can be separated from the glue filling hole 174 by a preset distance, that is, the first end of each glue guide groove 1724 is not adjacent to the glue filling hole 174 .

This can prevent the insulating glue entering the housing 17 from the glue filling hole 174 from flowing only along one or several of the plurality of glue guide grooves 1724, so that the insulating glue can be filled with the accommodating cavity 177 more quickly, so that further improvement can be achieved. Glue filling speed and glue filling efficiency. Preferably, the distance between the first end of each glue guide groove 1724 and the glue filling hole 174 may be 0.5mm-2mm.

The second end of each glue guiding groove 1724 can be adjacent to the edge of the first end surface 1725 of the cover 1721 . In this way, the insulating glue can flow along the glue guide groove 1724 to the edge of the housing cavity 177, so that the insulating glue can be more evenly distributed into the housing cavity 177, so that the insulating glue can be filled with the housing cavity 177 more quickly, and further improvement can be achieved. Glue filling speed and glue filling efficiency. The first end of each glue guide groove 1724 can be the inner end of the glue guide groove 1724 , and the second end of each glue guide groove 1724 can be the outer end of the glue guide groove 1724 .

As shown in Figure 9, the first end surface 1725 of the cover body 1721 of at least one of the first end cover 172 and the second end cover 173 can be further provided with a glue holding groove 179, and the glue holding groove 179 can be adjacent to the glue filling hole 174 , the glue holding groove 179 can be arranged around the glue filling hole 174 , and the first end of each glue guiding groove 1724 can be connected with the glue holding groove 179 .

The insulating glue that enters the housing 17 through the glue filling hole 174 first enters the glue groove 179, and then enters each glue guide groove 1724, that is, the insulating glue in the glue groove 179 can enter each glue guide groove Within 1724. In this way, the insulating glue entering the shell 17 from the glue filling hole 174 can enter into each glue guide groove 1724 more evenly, so that the insulating glue can be filled with the accommodating cavity 177 more quickly, so that the glue filling speed can be further increased. and filling efficiency.

As shown in FIG. 9, at least one of the first end cover 172 and the second end cover 173 may further include a stopper 1722, and the stopper 1722 may be arranged on the first end surface of the cover body 1721. The stopper 1722 may be located below the glue filling hole 174 .

The insulating glue tends to flow downward under its own gravity. By setting the stop block 1722 under the glue filling hole 174, the insulating glue can be blocked from flowing downward. In this way, the insulating glue entering the casing 17 through the glue filling hole 174 can be more evenly distributed into the accommodation cavity 177, so that the insulating glue can be filled with the accommodation cavity 177 more quickly, and the glue filling speed and glue filling speed can be further improved. efficiency.

Preferably, the stop block 1722 can be adjacent to the glue filling hole 174, so as to better prevent the insulating glue from flowing downward. More preferably, the stop block 1722 may have a preset height, so as to better prevent the insulating glue from flowing downward.

As shown in FIG. 9, at least one of the first end cap 172 and the second end cap 173 may further include a plurality of protrusions 1723, and the plurality of protrusions 1723 may be provided on the first end surface of the cover body 1721, and the plurality of protrusions 1723 may A bump 1723 can be arranged around the glue filling hole 174 . Wherein, a glue guide groove 1724 can be defined between two adjacent protrusions 1723, and the first end of each protrusion 1723 can be spaced from a preset distance from the glue filling hole 174 so as to form a glue holding groove 179, and each protrusion 1723 The second end of the cover body 1721 may be adjacent to the edge of the first end surface of the cover body 1721 . Thus, the manufacturing difficulty of at least one of the first end cap 172 and the second end cap 173 can be reduced.

Preferably, the stop block 1722 and the plurality of protrusions 1723 can be arranged around the glue filling hole 174 . A glue guide groove 1724 may be defined between the stop block 1722 and one protrusion 1723 , and another glue guide groove 1724 may be defined between the stop block 1722 and another protrusion 1723 .

As shown in FIG. 9 , specifically, a glue guide groove 1724 extending in the vertical direction, a glue guide groove 1724 extending generally in the horizontal direction, and a glue guide groove extending obliquely upward can be defined between two adjacent protrusions 1723 1724 , a glue guide groove 1724 extending obliquely downward may be defined between the protruding block 1723 and the stop block 1722 .

As shown in FIGS. 16-18 , the battery system 100 may include an installation case 2 , a battery module 1 , a heat exchange device 3 and an elastic member 4 , and the heat exchange device 3 may be a liquid cooling device. The installation shell 2 may have an installation cavity 23, the installation cavity 23 has a first wall surface 231 and a second wall surface 232 facing each other in the first direction (for example, an up-down direction), and the battery module 1 may be arranged in the installation cavity 23. The thermal device 3 may be disposed in the installation cavity 23 . The heat exchange device 3 may be located between the battery module 1 and the first wall 231 (eg, the bottom wall) of the installation cavity 23 in the first direction, and the battery module 1 may be in contact with the heat exchange device 3 . That is to say, the battery module 1 may be located between the heat exchange device 3 and the second wall surface 232 of the installation cavity 23 in the first direction.

The elastic member 4 can be arranged between the heat exchange device 3 and the first wall 231 of the installation cavity 23 in the first direction and/or can be arranged in the second direction between the battery module 1 and the installation cavity 23 in the first direction. between the walls 232 . The elastic member 4 may be in contact with each of the heat exchange device 3 and the first wall surface 231 of the installation cavity 23 and/or the elastic member 4 may be in contact with each of the battery module 1 and the second wall surface 232 of the installation cavity 23, The elastic member 4 may be in a compressed state.

In other words, the elastic member 4 may be provided between the heat exchange device 3 and the first wall 231 of the installation chamber 23 , or the elastic member 4 may also be provided between the battery module 1 and the second wall 232 of the installation chamber 23 . In addition, an elastic member 4 may be provided between the heat exchange device 3 and the first wall 231 of the installation chamber 23 , and an elastic member 4 may be provided between the battery module 1 and the second wall 232 of the installation chamber 23 .

By providing the elastic member 4 in the compressed state between the heat exchange device 3 and the first wall surface 231 of the installation cavity 23 and/or the elastic member in the compressed state between the battery module 1 and the second wall surface 232 of the installation cavity 23 The member 4, so that the elastic member 4 can exert elastic force on the heat exchange device 3 towards the battery module 1 and/or apply an elastic force on the battery module 1 towards the heat exchange device 3.

Therefore, the heat exchange device 3 and the battery module 1 can be closely and effectively contacted, so that heat can be effectively transferred between the battery module 1 and the heat exchange device 3, that is, the heat exchange device 3 can be used to effectively cool or The battery module 1 is heated so that the temperature of the battery module 1 can always be within the working temperature range to ensure that the performance of the battery module 1 and the battery system 100 is stable and always in good working condition.

As shown in Fig. 17 and Fig. 18, the elastic member 4 may be an elastic plate or an elastic layer. Preferably, the compression amount of the elastic member 4 may be 20%-60% and/or the compressive stress of the elastic member 4 may be 30 kPa-90 kPa. In this way, it can not only ensure that the heat exchange device 3 and the battery module 1 are in close and effective contact, but also prevent elastic failure of the elastic member 4 .

More preferably, the compression amount of the elastic member 4 may be 30%-50% and/or the compressive stress of the elastic member 4 may be 45 kPa-75 kPa. Further preferably, the compression amount of the elastic member 4 may be 40% and/or the compressive stress of the elastic member 4 may be 62 kPa. In this way, it is not only possible to further ensure that the heat exchange device 3 and the battery module 1 are in close and effective contact, but also to further prevent elastic failure of the elastic member 4 .

As shown in FIG. 17 and FIG. 18 , the battery system 100 may further include a first flexible material layer 5 , and the first flexible material layer 5 may be arranged on the heat exchange device 3 and the first wall surface 231 of the installation cavity 23 in the first direction. Between them, the first flexible material layer 5 may be in contact with the first wall surface 231 of the installation cavity 23 , and the first flexible material layer 5 may be in contact with one of the heat exchange device 3 and the elastic member 4 . Specifically, when the elastic member 4 is provided between the heat exchange device 3 and the first wall surface 231 of the installation cavity 23, the first flexible material layer 5 can be in contact with the elastic member 4, that is, the elastic member 4 is in the first direction. It can be located between the heat exchange device 3 and the first flexible material layer 5. When the elastic member 4 is not provided between the heat exchange device 3 and the first wall 231 of the installation cavity 23, the first flexible material layer 5 can be connected to the heat exchange device. 3 contacts.

By providing the first flexible material layer 5 between the heat exchange device 3 and the first wall surface 231 of the installation cavity 23, rigid friction between the heat exchange device 3 and the installation shell 2 (such as the chassis 21) can be avoided, thereby enabling Prevent heat exchange device 3 from leaking.

The first layer of flexible material 5 may be an insulating layer. Thus, the first flexible material layer 5 can be used to block the heat from the outside, so as to prevent the heat from the outside from being transferred to the heat exchange device 3, so as to prevent the temperature of the coolant in the heat exchange device 3 from rising or falling, thereby improving the heat exchange. The cooling effect or heating effect of the device 3 can further ensure that the temperature of the battery module 1 is always within the working temperature range.

Preferably, a first fireproof adhesive layer may be provided between the first flexible material layer 5 and the first wall surface 231 of the installation cavity 23, and between the first flexible material layer 5 and the one of the heat exchange device 3 and the elastic member 4 A second fireproof adhesive layer may be provided. That is to say, the first flexible material layer 5 can be bonded to the first wall surface 231 of the installation cavity 23 through the first fireproof adhesive layer, and the first flexible material layer 5 can be bonded to the heat exchange wall through the second fireproof adhesive layer. On the one of the device 3 and the elastic member 4. When the elastic member 4 is provided between the heat exchange device 3 and the first wall surface 231 of the installation cavity 23 , a third fireproof adhesive layer may be provided between the elastic member 4 and the heat exchange device 3 .

As shown in FIG. 17 and FIG. 18 , the battery system 100 may further include a second flexible material layer 6, and the second flexible material layer 6 may be arranged between the battery module 1 and the heat exchange device 3 in the first direction. The second flexible material layer 6 can be in contact with each of the battery module 1 and the heat exchange device 3 .

By arranging the second flexible material layer 6 between the heat exchange device 3 and the battery module 1 , rigid friction between the heat exchange device 3 and the battery module 1 can be avoided, thereby preventing the heat exchange device 3 from leaking.

The second flexible material layer 6 may be a thermally conductive layer. Therefore, the heat transfer between the battery module 1 and the heat exchange device 3 can be promoted through the second flexible material layer 6, so that the heat exchange device 3 can cool or heat the battery module 1 more effectively, thereby further ensuring that the battery The temperature of the module 1 is always within the working temperature range, thereby ensuring that the performance of the battery module 1 and the battery system 100 is more stable and always in good working condition.

Preferably, a seventh fireproof adhesive layer may be provided between the second flexible material layer 6 and the battery module 1 , and an eighth fireproof adhesive layer may be provided between the second flexible material layer 6 and the heat exchange device 3 . In other words, the second flexible material layer 6 can be bonded to the battery module 1 through the seventh fireproof adhesive layer, and the second flexible material layer 6 can be bonded to the heat exchange device 3 through the eighth fireproof adhesive layer.

When the elastic member 4 is provided between the battery module 1 and the second wall surface 232 of the installation cavity 23, a fifth fireproof adhesive layer may be provided between the elastic member 4 and the battery module 1, and the elastic member 4 and the installation cavity 23 A sixth fireproof adhesive layer may be provided between the second wall surfaces 232 . In other words, the elastic member 4 can be bonded to the battery module 1 through the fifth fireproof adhesive layer, and the elastic member 4 can be bonded to the second wall surface 232 of the installation cavity 23 through the sixth fireproof adhesive layer.

When the elastic member 4 is provided between the heat exchange device 3 and the first wall surface 231 of the installation cavity 23, and the first flexible material layer 5 is not provided between the heat exchange device 3 and the first wall surface 231 of the installation cavity 23, the elastic member A third fireproof adhesive layer may be provided between 4 and the heat exchange device 3 , and a fourth fireproof adhesive layer may be provided between the elastic member 4 and the first wall surface 231 of the installation cavity 23 .

As shown in FIG. 17 and FIG. 18 , in an embodiment of the present invention, there may be multiple battery modules 1 , multiple elastic members 4 , and multiple elastic members 4 may be arranged at intervals. Wherein, each battery module 1 is opposite to at least two elastic members 4 in the first direction.

Therefore, the at least two elastic members 4 can apply an elastic force toward the battery module 1 on the part of the heat exchange device 3 opposite to the battery module 1 in the first direction, so that the heat exchange device 3 can be positioned in the first direction. The part opposite to the battery module 1 in one direction is more closely and effectively in contact with the battery module 1 . And/or, the at least two elastic members 4 can exert an elastic force on the battery module 1 toward the heat exchange device 3, so that the part of the heat exchange device 3 that is opposite to the battery module 1 in the first direction and the battery Module 1 is in more intimate and efficient contact. Therefore, heat can be effectively transferred between the battery module 1 and the heat exchange device 3 .

Preferably, multiple elastic members 4 can be located on the same plane.

As shown in FIG. 16 , the battery system 100 may further include a mounting beam 7, which may be disposed on the first wall 231, and the battery module 1 may be detachably mounted on the mounting beam 7 through fasteners. Therefore, the battery module 1 can be installed into the installation cavity 23 more conveniently and more stably.

Preferably, the first wall 231 may be a surface of the chassis 21 , and the second wall 232 may be a surface of the cover 22 .

One of the wall surface of the installation cavity 23 and the heat exchange device 3 may be provided with a card slot, and the other of the wall surface of the installation cavity 23 and the heat exchange device 3 is provided with a card protrusion, and the card protrusion can be fitted in the card slot . Therefore, the heat exchange device 3 can be limited on a plane perpendicular to the first direction, so that the structure of the battery system 100 can be made more stable.

As shown in FIGS. 19-21 , in some examples of the present invention, the installation shell 2 may include a chassis 21 , a cover plate 22 , an installation column 24 and a seal 25 . The cover plate 22 can be arranged on the chassis 21, and an installation cavity 23 can be defined between the cover plate 22 and the chassis 21, and the installation cavity 23 has a first wall surface 231 opposite on the first direction (for example, the height direction of the installation cavity 23) and the second wall 232 . The first through hole 221 may be disposed on the second wall surface 232 (for example, the top wall surface). The installation column 24 can be disposed on the first wall 231 (eg, the bottom wall) of the installation cavity 23 , and a part of the installation column 24 can pass through the first through hole 221 so as to protrude out of the installation cavity 23 .

The sealing member 25 may include a sealing part 251 and a connecting part 252 , the sealing part 251 may be located outside the installation cavity 23 , and the sealing part 251 may be provided on the part of the installation column 24 . The connecting part 252 can be connected with the sealing part 251 , and the first part 2521 of the connecting part 252 can pass through the first through hole 221 and protrude into the installation cavity 23 , that is, the first part 2521 of the connecting part 252 can be located in the installation cavity 23 . The first portion 2521 of the connecting portion 252 can be connected with the mounting column 24 . The sealing portion 251 can be in sealing contact with the one of the cover plate 22 and the chassis 21 (ie the one with the first through hole 221 ) and/or the mounting post 24 can be in sealing contact with the second wall surface 232 of the mounting cavity 23 .

Since the sealing portion 251 can be in sealing contact with the one of the cover plate 22 and the chassis 21 (that is, the one provided with the first through hole 221), the edge of the sealing portion 251 can be located outside the edge of the first through hole 221, That is, the edge of the sealing portion 251 can surround the first through hole 221 , so as to prevent foreign matter (such as water) from entering the installation cavity 23 through the first through hole 221 .

Since the mounting column 24 can be in sealing contact with the second wall surface 232 of the mounting cavity 23, the edge of the mounting column 24 can be located outside the edge of the first through hole 221, that is, the edge of the mounting column 24 can surround the first through hole 221, In order to prevent external sundries (such as water) from entering the installation cavity 23 through the first through hole 221 .

In order to make electric vehicles have a greater mileage and less charging frequency, the only way to increase the power of the battery system is to increase the power of the battery system, that is, the battery system includes more battery modules, which will result in the height of the battery system (that is, the X direction) is restricted, the battery system is flatter. For a flat battery system, if the hoisting points are only set on the peripheral edge of the battery system, the modal requirements of the battery system cannot be met, let alone the installation strength of the battery system.

According to the installation shell 2 of the embodiment of the present utility model, the installation column 24 is provided on the first wall surface 231 of the installation cavity 23, so that the installation column 24 can be connected to the body of the electric vehicle to meet the flattened battery system 100. strength requirements.

Moreover, by providing the sealing member 25 and making the sealing portion 251 in sealing contact with one of the cover plate 22 and the chassis 21 and/or the mounting post 24 in sealing contact with the second wall surface 232 of the mounting cavity 23, the first The through hole 221 is sealed, thereby improving the sealing performance and safety performance of the installation case 2 and the battery system 100 .

The battery system 100 may be flat. Specifically, the ratio of the length to the height of the chassis 21 can be (8-12):1, the ratio of the width to the height of the chassis 21 can be (6-10):1, and the ratio of the length to the height of the cover plate 22 can be (8-12):1, the ratio of the width to the height of the cover plate 22 may be (6-10):1. That is to say, the ratio of the length and the height of the installation shell 2 can be generally (8-12): 1, the ratio of the width of the installation shell 2 and the height can be generally (6-10): 1, the length of the installation cavity 23 and The height ratio may be generally (8-12):1, and the ratio of the width to the height of the installation cavity 23 may be generally (6-10):1.

The utility model also provides a battery system 100 , the battery system 100 may include an installation case 2 and a battery module 1 , and the battery module 1 may be arranged in the installation cavity 23 of the installation case 2 . The battery system 100 according to the embodiment of the present utility model has the advantages of high installation strength and good sealing performance.

The utility model also provides an electric vehicle, which includes a vehicle body and a battery system 100, and the battery system 100 can be arranged on the vehicle body. Preferably, the vehicle body may have a lifting beam 200 , and the mounting column 24 of the mounting shell 2 of the battery system 100 may be connected to the lifting beam 200 .

As shown in FIGS. 19-21 , the part of the installation column 24 passes through the lifting beam 200 , and the sealing portion 251 is located between the lifting beam 200 and the cover plate 22 in the height direction of the installation cavity 23 . Since the sealing portion 251 is located between the hoisting beam 200 and the cover plate 22 in the height direction (the first direction) of the installation cavity 23, the hoisting beam 200 can be spaced apart from the cover plate 22, that is, the hoisting beam 200 can be separated from the installation shell 22. spaced apart so as to avoid affecting performances such as collisions and crushing of the electric vehicle.

Preferably, the electric vehicle may further include a mounting part, the mounting part (such as a nut) can be threaded on the part of the mounting column 24, and the lifting beam 200 can be located between the mounting part and the mounting part in the height direction of the mounting cavity 23. Between the sealing parts 251. Specifically, the mounting part can be located above the lifting beam 200, the sealing part 251 can be located below the lifting beam 200, the mounting part can be against the lifting beam 200, and the sealing part 251 can be against the lifting beam 200, The sealing portion 251 can abut against one of the cover plate 22 and the chassis 21 . The mounting member may be a second clamping member 244 .

A second through hole may be provided on the first wall surface 231 of the installation cavity 23 . As shown in FIG. 20 and FIG. 21 , the mounting post 24 may include a post body 241 , a mounting portion 242 , a first clip 243 and a second clip 244 . The column body 241 can be arranged on the first wall surface 231 of the installation cavity 23, and the column body 241 has a third through hole passing through the column body 241 along its height direction, that is, the column body 241 has a hole that penetrates the column body 241 along the first direction (for example, the up and down direction). The third through hole of the cylinder 241 allows the cylinder 241 to be in sealing contact with the second wall 232 . Specifically, the upper surface of the cylinder 241 can be in sealing contact with the second wall surface 232 . Wherein, the first wall surface 231 may be a part of the surface of the chassis 21 , and the second wall surface 232 may be a part of the surface of the cover plate 22 .

The installation part 242 can pass through the first through hole 221 , the second through hole and the third through hole, that is, the installation part 242 can pass through the chassis 21 , the pillar 241 and the cover plate 22 . That is to say, the first through hole 221 , the second through hole and the third through hole are substantially opposite to each other in the first direction. Since the column 241 is arranged on the first wall 231 of the installation cavity 23, and the second through hole and the third through hole are generally opposite in the first direction, the edge of the column 241 can be located at the second through hole. The outside of the edge of the column body 241 can surround the second through hole, otherwise the column body 241 cannot be arranged on the first wall surface 231 of the installation cavity 23 .

The column body 241 can be welded on the first wall surface 231 of the installation cavity 23; or, a sealing ring can be provided between the column body 241 and the first wall surface 231 of the installation cavity 23; or the column body 241 and the first wall surface of the installation cavity 23 231 can be integrally formed, so as to prevent external sundries (such as water) from entering the installation cavity 23 through the second through hole.

A part 2421 of the installation part 242 can pass through the first through hole 221 so as to protrude out of the installation cavity 23 . Wherein, the sealing part 251 can be sleeved on a part 2421 of the installation part 242 .

The first clamping part 243 and the second clamping part 244 can be disposed on the installation part 242 , and at least one of the first clamping part 243 and the second clamping part 244 can be threaded on the installation part 242 . Wherein, the first clamping member 243 can abut against the other one of the chassis 21 and the cover plate 22 (that is, the one without the first through hole 221 ) or the column 241 .

As shown in Figures 19-21, specifically, the mounting part 242 can pass through the lifting beam 200, the first clamping part 243 can abut against the column 241, and the second clamping part 244 can abut against the lifting beam 200 on. In other words, the column 241 , the cover plate 22 , the sealing portion 251 and the lifting beam 200 can be clamped between the first clamping part 243 and the second clamping part 244 . Therefore, not only can the battery system 100 be installed on the lifting beam 200 conveniently and stably, but also the battery system 100 can be replaced conveniently and easily.

As shown in FIG. 21 , the second clamping member 244 can be located above the lifting beam 200 , the lifting beam 200 can be located above the sealing part 251 , the sealing part 251 can be located above the cover plate 22 , and the cover plate 22 can be located on the column body 241 , the column 241 may be located above the chassis 21 , and the chassis 21 may be located above the first clamping member 243 .

Preferably, the first clamping part 243 and the mounting part 242 can be integrally formed to form a bolt, and the second clamping part 244 can be a nut. A receiving groove may be provided on the cylinder 241, and the first clamping member 243 may be disposed in the receiving groove. Thus, interference and friction between the first clamping member 243 and other components of the electric vehicle can be avoided.

As shown in FIGS. 20 and 21 , the connecting portion 252 can be sleeved on the mounting portion 242 . In a specific example of the present invention, an internal thread may be provided on the wall of the third through hole, and an external thread capable of cooperating with the internal thread may be provided on the peripheral surface of at least a part of the first part 2521 of the connecting portion 252 , the first part 2521 of the connecting part 252 can fit in the third through hole through the internal thread and the external thread. In other words, the first portion 2521 of the connecting portion 252 can be screwed into the third through hole.

Specifically, the first portion 2521 of the connecting portion 252 can pass through the first through hole 221 so as to protrude into the third through hole. Since the first part 2521 of the connecting portion 252 is threadedly engaged in the third through hole, by rotating the connecting portion 252 (the sealing portion 251 rotates together with the connecting portion 252), the sealing portion 251 can be moved toward the adjacent cover plate 22 and the chassis. 21 (that is, the one provided with the first through hole 221 ), and then the sealing portion 251 can be in contact with the one of the cover plate 22 and the chassis 21 . As the sealing portion 251 moves further, the sealing portion 251 can press the one of the cover plate 22 and the chassis 21 (such as the cover plate 22 ) in the direction adjacent to the column 241 until the one of the cover plate 22 and the chassis 21 (such as The cover plate 22 ) is in sealing contact with the cylinder 241 , that is, the second wall surface 232 is in sealing contact with the cylinder 241 .

Specifically, the first through hole 221 may be provided on the cover plate 22 , and the first through hole 221 may pass through the cover plate 22 along the first direction.

As shown in FIGS. 20 and 21 , the installation shell 2 may further include a sealing ring 26 , and the sealing ring 26 may be disposed between the cylinder 241 and the second wall 232 . As a result, the sealing performance of the mounting case 2 and the battery system 100 can be further improved. Those skilled in the art can understand that the outer edge of the sealing ring 26 can be located outside the edge of the first through hole 221 , that is, the outer edge of the sealing ring 26 can surround the first through hole 221 .

Because this one in the cover plate 22 and the chassis 21 is pressed on the sealing ring 26 under the drive of the sealing portion 251, that is, the one of the cover plate 22 and the chassis 21 does not rotate relative to the sealing ring 26, so the cover plate 22 and the chassis 21 The one of them will not wear the surface of the sealing ring 26, thus will not affect the sealing performance of the sealing ring 26, so that the sealing performance of the installation case 2 and the battery system 100 can be further improved.

A sealing ring may also be provided between the sealing portion 251 and the one of the cover plate 22 and the chassis 21. Since the sealing portion 251 will rotate when it moves in a direction adjacent to the one of the cover plate 22 and the chassis 21, the sealing portion 251 will wear the surface of the sealing ring, resulting in a decrease in the sealing performance of the sealing ring.

Preferably, the cross section of the sealing part 251 may be circular, the cross section of the connecting part 252 may be circular, and the inner peripheral surface of the sealing part 251 and the inner peripheral surface of the connecting part 252 may be flush. This makes the structure of the seal 25 more rational.

As shown in FIG. 19 and FIG. 20 , there may be multiple mounting posts 24 , and the multiple mounting posts 24 may be arranged on the first wall surface 231 of the mounting cavity 23 at intervals along the length direction of the chassis 21 . As a result, the installation strength of the flattened battery system 100 can be further increased.

Preferably, each mounting column 24 may be located in the middle of the first wall 231 in the width direction of the chassis 21 . Thus, the structure of the mounting case 2 can be made more reasonable. Wherein, the length direction of the chassis 21, the length direction of the cover plate 22, the length direction of the installation cavity 23 and the length direction of the installation shell 2 can be consistent, the width direction of the chassis 21, the width direction of the cover plate 22, the width direction of the installation cavity 23 The width direction and the width direction of the installation case 2 may be consistent.

A plurality of battery modules 1 may be provided in the installation cavity 23 , and the plurality of battery modules 1 may be located on both sides of the plurality of installation columns 24 in the width direction of the chassis 21 .

As shown in FIG. 20 , the mounting case 2 may further include at least one first reinforcing member 271 and two second reinforcing members 272 . A plurality of mounting columns 24 and at least one first reinforcing member 271 may be arranged alternately along the length direction of the chassis 21 . In other words, a first reinforcing member 271 may be provided between two adjacent installation columns 24 . Wherein, each first reinforcing piece 271 is disposed on the first wall surface 231 , and each first reinforcing piece 271 can be connected with each of two adjacent installation columns 24 .

Each second reinforcing member 272 may be disposed on the first wall surface 231 , and the installation cavity 23 has a third wall surface and a fourth wall surface opposite to each other along the length direction of the chassis 21 . Wherein, a second reinforcing member 272 can be connected with each of the third wall surface and the mounting column 24 adjacent to the third wall surface, and another second reinforcing member 272 can be connected with the fourth wall surface and the mounting column 24 adjacent to the fourth wall surface. Each of the mounting posts 24 is connected. As a result, the structural strength of the mounting shell 2 and the battery system 100 can be further increased.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; it can be mechanically connected, connected or communicated with each other; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two components or the interaction relationship between two components, unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (16)

1. a kind of battery system characterized by comprising

Mounting shell, has installation cavity in the mounting shell, the installation cavity have opposite in a first direction the first wall surface and Second wall surface；

Battery modules, the battery modules are located in the installation cavity；

Heat-exchanger rig, the heat-exchanger rig are located in the installation cavity, and the heat-exchanger rig is located at institute in said first direction It states between battery modules and the first wall surface of the installation cavity, the battery modules are contacted with the heat-exchanger rig；With

Elastic component, the elastic component be located in said first direction the heat-exchanger rig and the installation cavity the first wall surface it Between and/or be located between the battery modules and the second wall surface of the installation cavity in said first direction, the elastic component It is contacted with each of the heat-exchanger rig and the first wall surface of the installation cavity and/or the elastic component and the battery mould Each of second wall surface of group and installation cavity contact, wherein the elastic component is in compressive state.

2. battery system according to claim 1, which is characterized in that the elastic component is elastic plate or elastic layer.

3. battery system according to claim 1, which is characterized in that the battery modules be it is multiple, the elastic component is Multiple, multiple elastic components are arranged at interval, wherein each battery modules and at least two elastic components are in institute It states opposite on first direction.

4. battery system according to any one of claim 1-3, which is characterized in that the decrement of the elastic component is The compression stress of 20%-60% and/or the elastic component is 30 kPas -90 kPas.

5. battery system according to claim 1, which is characterized in that it further comprise the first flexible material layer, described One flexible material layer is located in said first direction between the heat-exchanger rig and the first wall surface of the installation cavity, and described One flexible material layer is contacted with the first wall surface of the installation cavity, first flexible material layer and the heat-exchanger rig and described A contact in elastic component.

6. battery system according to claim 1, which is characterized in that

Third fire prevention glue-line, the elastic component and the first of the installation cavity are equipped between the elastic component and the heat-exchanger rig The 4th fire prevention glue-line is equipped between wall surface；And/or

The 5th fire prevention glue-line, the elastic component and the second of the installation cavity are equipped between the elastic component and the battery modules The 6th fire prevention glue-line is equipped between wall surface.

7. battery system according to claim 1, which is characterized in that it further comprise the second flexible material layer, described Two flexible material layers are located in said first direction between the battery modules and the heat-exchanger rig, the described second flexible material The bed of material is contacted with each of the battery modules and the heat-exchanger rig.

8. battery system according to claim 1, which is characterized in that further comprise mounting rail, the mounting rail is located at On first wall surface, the battery modules are removably mounted on the mounting rail by fastener.

9. battery system according to claim 1, which is characterized in that in the wall surface of the installation cavity and the heat-exchanger rig One be equipped with card slot, another in the wall surface of the installation cavity and the heat-exchanger rig is equipped with card convex, the card convex Cooperation is in the card slot.

10. battery system according to claim 4, which is characterized in that the decrement of the elastic component is 30%-50% And/or the compression stress of the elastic component is 45 kPas -75 kPas.

11. battery system according to claim 10, which is characterized in that the decrement of the elastic component be 40% and/or The compression stress of the elastic component is 62 kPas.

12. battery system according to claim 5, which is characterized in that first flexible material layer and the installation cavity The first wall surface between be equipped with the first fire prevention glue-line, in first flexible material layer and the heat-exchanger rig and the elastic component It is one between be equipped with second fire prevention glue-line.

13. the battery system according to claim 5 or 12, which is characterized in that first flexible material layer is insulating layer.

14. battery system according to claim 7, which is characterized in that second flexible material layer and the battery mould It is equipped with the 7th fire prevention glue-line between group, the 8th fire prevention glue-line is equipped between second flexible material layer and the heat-exchanger rig.

15. the battery system according to claim 7 or 14, which is characterized in that second flexible material layer is heat-conducting layer.

16. a kind of electric vehicle characterized by comprising

Car body；With

Battery system, the battery system are the battery system according to any one of claim 1-15, the battery system System is located on the car body.