CN104064834B - Heat conduction structure - Google Patents

Abstract

A thermally conductive structure for combining with multiple batteries of a battery module; the thermally conductive structure includes at least one thermally conductive sheet group, the thermally conductive sheet group has a plurality of thermally conductive sheets, each thermally conductive sheet includes a bottom plate; and the bottom plate has a plurality of through holes; The thermal conductive sheets are stacked on each other, and the through holes on the thermal conductive sheets correspond to each other and form multiple channels; the batteries are inserted into these channels. In the thermal conductive structure provided by the present invention, the sides of the bottom plate that are not connected to the side plates are stacked to form a hollow structure, so that the heat of the battery module can be dissipated by means of thermal convection, thereby increasing the uniformity of temperature and voltage in the battery module.

Description

Thermal structure

technical field

The invention relates to a heat conduction structure, and in particular to a heat conduction structure suitable for a battery module.

Background technique

Lithium batteries have the properties of high energy density, high output power, stable discharge and repeatable charge and discharge, so they are widely used in various fields such as 3C products, large machinery and transportation tools. Generally speaking, users need to design a suitable battery module according to the requirements of battery arrangement, battery quantity, battery voltage balance, and battery temperature balance in the product to improve product reliability.

However, as the number of batteries required by the product and the operating time increase, temperature unevenness is likely to occur in the battery module. In addition, as the capacity of the battery module increases, voltage imbalances are more likely to occur inside the battery module during pumping and discharging, which in turn leads to a decrease in the life and reliability of the battery module.

Contents of the invention

The present invention provides a heat conduction structure that can be used in conjunction with multiple batteries of a battery module to increase the uniformity of temperature and voltage in the battery module.

The present invention provides a thermally conductive structure that can be used in combination with a plurality of cells of a battery module. The heat conduction structure includes at least one heat conduction sheet group, and the heat conduction sheet set has a plurality of heat conduction sheets, and each heat conduction sheet includes a bottom plate. The bottom plate has a plurality of through holes. The heat conducting sheets are stacked on each other, and the through holes on the heat conducting sheets correspond to each other and form multiple channels. Each battery is inserted into one of the channels. Each of the heat conduction sheets of the heat conduction sheet group may also include a plurality of elastic structures connected to the bottom plate, and the elastic structures are arranged in the through holes, and the batteries inserted in the passages are attached to the elastic structures. structure.

In other words, the present invention provides a heat conduction structure for combining with a plurality of batteries of a battery module, the heat conduction structure includes: at least one heat conduction sheet group having a plurality of heat conduction sheets, each heat conduction sheet includes a bottom plate, and The bottom plate has a plurality of through holes, and the bottom plate also has a first plane, a second plane opposite to the first plane, a pair of first sides parallel to each other, and a pair of second sides parallel to each other; The heat conduction sheets are stacked on each other, and the through holes on the heat conduction sheets correspond to each other and form a plurality of channels, and each of the batteries is inserted in the channels

The present invention provides a thermally conductive structure that can be used in combination with a plurality of cells of a battery module. The heat conduction structure includes at least one heat conduction sheet group, and the heat conduction sheet group is formed by stacking a plurality of heat conduction sheets. The heat conducting sheet has a bottom plate and a pair of side plates connected to the bottom plate, and the bottom plate has a plurality of through holes. When the heat conduction sheets are stacked to form a heat conduction sheet group, a plurality of through holes will correspondingly form a channel so that the battery can be inserted therein. The side plates are connected to form a plane, so that the heat of the battery module can be dissipated by means of heat conduction. In addition, the sides of the bottom plate that are not connected to the side plates are stacked to form a hollow structure, so that the heat of the battery module can be dissipated by means of heat convection.

In order to further understand the characteristics and technical content of the present invention, please refer to the following detailed description and accompanying drawings of the present invention, but these descriptions and accompanying drawings are only used to illustrate the present invention, rather than to the scope of protection of the present invention make any restrictions.

Description of drawings

Fig. 1 is a three-dimensional exploded schematic diagram of a heat conduction structure combined with a battery according to Embodiment 1 of the present invention;

FIG. 1A is a three-dimensional schematic diagram of a heat conducting sheet group according to an embodiment of the present invention;

Fig. 2 is a three-dimensional exploded schematic view of the second embodiment of the present invention when the heat conduction structure is combined with the battery;

Fig. 3 is a three-dimensional exploded schematic view of the third embodiment of the present invention when the heat conduction structure is combined with the battery;

Fig. 4 is a three-dimensional schematic diagram of a heat conducting sheet according to Embodiment 4 of the present invention;

FIG. 5 is a three-dimensional schematic diagram of a heat conducting sheet according to Embodiment 5 of the present invention.

[Description of reference signs of main components]

1, 1’, 1” heat conduction structure

10 thermal pad set

110, 110’, 110” Heat Spreader

120 channels

112 bottom plate

114 side panel

115 snap structure

114’, 114” Snap Plates

116 elastic structure

118 hollow structure

12 insulating thermal pad

14 Heat conduction plate

2 battery modules

20 batteries

201 Positive

202 negative pole

22, 22' shell

22a, 22a' first housing

222a, 222a' first opening

22b, 22b' Second housing

222b, 222b' second opening

24 insulating sheet

242 openings

S1 first plane

S2 second plane

L1 first side

L2 second side

h Through hole

w width

detailed description

FIG. 1 is a three-dimensional exploded schematic diagram of a combination of a heat conducting structure 1 and a battery 20 according to Embodiment 1 of the present invention. 1A is a three-dimensional schematic diagram of a heat conducting sheet assembly 10 according to Embodiment 1 of the present invention. Please refer to FIG. 1 and FIG. 1A , the heat conduction structure 1 is used to combine with a plurality of batteries 20 of the battery module 2 . The heat conduction structure 1 includes at least one heat conduction sheet group 10 . In FIG. 1 , there are two sets of heat conduction sheet groups 10 , but the present invention is not limited thereto. In FIG. 1A , the heat conduction sheet set 10 has a plurality of heat conduction sheets 110 , and each heat conduction sheet 110 further includes a bottom plate 112 , at least one side plate 114 and a plurality of elastic structures 116 .

In detail, as shown in FIG. 1A , the bottom plate 112 has a first plane S1, a second plane S2 opposite to the first plane S1, a pair of first sides L1 parallel to each other, a pair of second sides parallel to each other. side L2 and a through hole h. In addition, in this embodiment, the heat conduction structure 1 uses the through holes h to combine with the batteries 20 , so the number of the through holes h is greater than or equal to the number of the batteries 20 . That is to say, the number of through holes h on each heat conducting sheet 110 will depend on the number of batteries 20 . The arrangement of the through holes h on the heat conduction sheet 110 will also be changed according to different requirements, and the present invention does not limit the number and arrangement of the through holes h on the heat conduction sheet 110 . For example, in this embodiment, each heat conducting sheet 110 has 6 through-holes h, and the arrangement of the through-holes h is a matrix of two by three. However, the present invention does not limit the number and arrangement of the through-holes h.

Based on the above, the side panel 114 is a strip structure with a width w, and one side of the side panel 114 is connected to the second side L2 of the bottom panel 112, and the side panel 114 protrudes from the bottom panel. 112 of the second plane S2. A plurality of elastic structures 116 are connected to the second plane S2 of the base plate 112 and protrude from the second plane S2. In addition, the elastic structure 116 surrounds the through hole h of the bottom plate 112 . As shown in FIG. 1A , the number of elastic structures 116 around each through hole h is four, but the present invention does not limit the number of elastic structures 116 . In addition, the width of the elastic structure 116 is less than or equal to the width w of the side panel 114 . In general, since the side plate 114 has a width w, and the side plate 114 is substantially perpendicular to the bottom plate 112 , and the elastic structure 116 has a width less than or equal to w, the overall thickness of the heat conducting sheet 110 is equal to the width w. In this embodiment, the heat conduction sheet 110 may be manufactured by stamping, but the present invention does not limit the manufacturing method of the heat conduction sheet 110 .

It should be noted that, as shown in FIG. 1A , in this embodiment, the side plate 114 and the elastic structure 116 protrude from the second plane S2 of the bottom plate 112 . However, in other embodiments, the side plate 114 and the elastic structure 116 can protrude from different planes of the bottom plate 112 , for example, the elastic piece 116 can protrude from the second plane S2 , while the side plate 114 can protrude from the first plane S1 . The present invention is not limited thereto.

Please refer to FIG. 1A , in this embodiment, a plurality of heat conduction sheets 110 are stacked to form a heat conduction sheet set 10 , and the through holes h on the heat conduction sheets 110 correspond to each other to form a plurality of channels 120 . In detail, since the second side L2 of each heat conducting sheet 110 has a side plate 114 , and the side plate 114 has a width w. Therefore, in the thermally conductive sheet group 10 formed by stacking the thermally conductive sheets 110 , the distance between the bottom plates 112 of two adjacent thermally conductive sheets 110 is approximately equal to the width w of the side plates 114 . In addition, since the side plates 114 are connected to the second side L2 of the bottom plate 112 , when the heat conducting sheets 110 are stacked together, the side plates 114 will be connected to form a plane. Since the first side L1 of the bottom plate 112 is not connected to the side plate 114, when the heat conducting sheets 110 are stacked together, a hollow structure 118 will be formed between two adjacent first sides L1 (as shown in FIG. 1A ). ).

It should be noted that, in this embodiment, the heat conduction sheet 110 may be a metal heat conduction sheet, such as gold, silver, copper, aluminum or tin. However, the present invention does not limit the material of the heat conduction sheet 110 , for example, in other embodiments, the heat conduction sheet 110 may also be a non-metal heat conduction sheet. In addition, in each heat conducting sheet set 10 , the materials of any two heat conducting sheets 110 may be different from each other. For example, one of the heat conduction sheets 110 may be a non-metal heat conduction sheet, and the other heat conduction sheets 110 may all be metal heat conduction sheets. The present embodiment also does not limit the width w of the side plate 114 in the heat conducting sheet 110 . In each heat conducting sheet group 10 , the width w of the side panels 114 of any two heat conducting sheets 110 may also be different from each other.

In addition, each heat conducting sheet 110 may further include at least one engaging structure 115 . The engaging structure 115 is located on the side plate 114 and has a groove and a hook (not shown in the figure). The hook of one of the heat-conducting sheets 110 of the heat-conducting sheet assembly 10 can hook into the groove of the other heat-conducting sheet 110 . Two adjacent pieces of heat conduction sheets 110 can be joined together without being easily separated. In other embodiments, in order to save material, each heat conduction sheet 110 may optionally include the at least one engaging structure 115; The length is extended to the next adjacent odd-numbered heat conduction sheet 110 with the engaging structure 115, that is, the hook of the first heat conduction sheet 110 can extend from the first heat conduction sheet 110 to the third piece The groove of the heat conduction sheet 110 and the groove of the third heat conduction sheet 110, similarly, the hook of the third heat conduction sheet 110 can hook the groove of the fifth heat conduction sheet 110, and so on , the odd number of heat conduction sheets 110 can be joined together so that two adjacent heat conduction sheets 110 will not be easily separated. Similarly, through the extension of the hook, the second piece of the heat conducting sheet 110 can also be joined with the fourth piece of heat conducting sheet 110, and the first piece of heat conducting sheet 110 can also be joined with the fourth piece of heat conducting sheet 110. This embodiment does not The bonding pitch of the thermal conductive sheets 110 is not limited.

It should be noted that, as shown in FIG. 1A, the number of engaging structures 115 on each side plate 114 is two, but this embodiment does not limit the number of engaging structures 115. In other embodiments, the engaging structures The number of 115 can also be one or greater than two. In addition, in FIG. 1A , the engaging structures 115 located on the two second sides L2 are arranged symmetrically with each other. However, this embodiment does not limit the arrangement of the engaging structures 115. In other embodiments, the engaging structures 115 can also be Not arranged in a symmetrical manner.

Please refer to FIG. 1 again, the heat conducting structure 1 is used to combine with a plurality of batteries 20 of the battery module 2 . The battery 20 can be inserted into a plurality of channels 120 formed by stacking the through holes h. The length of the channel 120 is less than or equal to the length of the battery 20 , so that the battery 20 can be just accommodated in the channel 120 , or beyond the channel 120 front and rear. In addition, the battery 20 will adhere to the elastic structure 116 , that is, the battery 20 can be tightly fitted and accommodated in the channel 120 by means of the elastic structure 116 . In addition, as shown in FIG. 1 , in this embodiment, the number of heat conducting sheet groups 10 is two, and the number of through holes h in each heat conducting sheet 110 is six, and the arrangement of the through holes h is two times three. matrix. That is to say, the number of channels 120 is 6, and the channels 120 are arranged in a two-by-three matrix, which can accommodate six batteries 20 , and these batteries 20 are arranged in a two-by-three matrix.

As mentioned above, in this embodiment, among the batteries 20 installed in the same heat conducting sheet group 10, the positive pole 201 of any battery 20 will be electrically connected to the positive pole 201 of the other battery 20, and any battery The negative electrode 202 of the battery 20 is electrically connected to the negative electrode 202 of another battery 20 ; that is, in the same heat conducting sheet group 10 , the batteries 20 are arranged in parallel. In this embodiment, the adjacent heat conduction sheet groups 10 are arranged in series. Therefore, in this embodiment, the battery 20 is designed to be 6 in parallel and 2 in series. In other embodiments, the battery 20 of the same heat conduction sheet set 10 may be a conductive can body (not shown) without an insulating layer coating, so that when the battery 20 is accommodated in the channel of the same heat conduction sheet set 10 of conductive material 120, the negative poles 202 of these batteries 20 are also electrically connected to the negative poles 202 of another battery 20, that is, the batteries 20 are arranged in parallel.

In addition, as shown in FIG. 1, in this embodiment, the battery 20 is arranged in such a way that in one of the heat conducting sheet groups 10, the positive electrodes 201 of all the batteries 20 will extend in the direction facing the first plane S1 (as shown in FIG. 1 In the right heat conduction sheet group 10), in the adjacent heat conduction sheet group 10, the negative poles 202 of all electrodes 20 will extend in the direction of the first plane S1 (as shown in the left heat conduction sheet group 10 in Figure 1). However, the quantity, series-parallel connection and arrangement of the batteries 20 can be designed according to user's requirements, and the present invention is not limited thereto.

Referring to FIG. 1 , the battery module 2 further includes multiple pairs of insulating sheets 24 (in this embodiment, only two pairs are shown), and each heat conducting sheet group 10 is located between a pair of insulating sheets 24 . The insulating sheet 24 respectively covers the first plane S1 of one of the heat conducting sheets 110 and the second plane S2 of the other heat conducting sheet 110 in the heat conducting sheet set 10 . In other words, one of the insulating sheets 24 will cover the first plane S1 of the uppermost thermally conductive sheet 110 in the thermally conductive sheet group 10 , while the other insulating sheet 24 will cover the first plane S1 of the lowermost thermally conductive sheet 110 in the thermally conductive sheet group 10 . Second plane S2.

In addition, there are a plurality of openings 242 above the insulating sheet 24 , and these openings 242 on the insulating sheet 24 only expose the positive electrode 201 and the negative electrode 202 of the battery 20 inserted in the heat conducting structure 1 . In order to facilitate the series connection of the battery 20 to the outside. The insulating sheet 24 can prevent the parallel batteries 20 from being electrically connected to each other in practical applications, which will affect the efficacy and reliability of the battery module 2 . However, in other embodiments, the battery module 2 may not include an insulating sheet, and the present invention is not limited thereto.

In addition, the battery module 2 can also include a casing 22, and the casing 22 can cover the thermal conductive sheet group 10, the battery 20 and the insulating sheet 24 in the casing, so as to cover the thermal conductive sheet group 10, the battery 20 and the insulating sheet 24 is integrated and exposes the first side L1 of each heat conducting sheet 110 in the heat conducting sheet set 10 . For example, as shown in FIG. 1 , the housing 22 in this embodiment may further include a first shell 22a and a second shell 22b. The first housing 22a will connect the insulating sheet 24 , the battery 20 and the thermally conductive sheet group 10 from the direction of the first plane S1 in the thermally conductive sheet group 10 , and the second housing 22b will connect the insulating sheet 24 , the battery 20 and the thermally conductive sheet group 10 from the direction of the second plane S2 in the thermally conductive sheet group 10 . wrapped in it. In addition, the first housing 22a and the second housing 22b can be joined together by, for example, screws.

In addition, the first housing 22a further includes a pair of first openings 222a, and the second housing 22b further includes a pair of second openings 222b. When the first shell 22a and the second shell 22b are joined together, the first opening 222a and the second opening 222b will expose all the first sides L1 of the heat conducting sheet 110 (as shown in FIG. 1 ). Since the first side L1 is not connected to the side plate 114 , there is a hollow structure 118 between two adjacent first sides L1 . That is to say, the first opening 222 a and the second opening 222 b expose the hollow structure 118 .

Generally speaking, when the battery module is in operation, the internal temperature distribution of the whole battery module will be uneven due to the arrangement of the batteries. In addition, when the battery module is pumped and discharged, there will be a situation of voltage imbalance. In this embodiment, since the heat conduction sheet group 10 accommodating the battery 20 is formed by stacking a plurality of heat conduction sheets 110 , a larger heat dissipation area of the battery 20 can be provided. Preferably, the heat conduction sheet 110 used in the heat conduction sheet set 10 may be a metal heat conduction sheet, which provides a better heat dissipation effect for the battery 20 and further uniformizes the temperature inside the battery module 2 .

In addition, since the shell 22 of the battery module 2 exposes the hollow structure 118 formed between two adjacent first sides L1, the battery module 2 can use the hollow structure 118 as a channel for fluid convection, and utilize the air The battery module 2 is dissipated in a cold or liquid cooling manner, so as to make the temperature inside the battery module 2 uniform and achieve a good heat dissipation effect. In addition, according to different usage situations, the battery module 2 may also be operated at a low temperature. At this time, the heat conducting sheet set 10 can play the role of conducting heat to the battery 20 . That is to say, the thermal conductive sheet set 10 is a good conductor for conducting heat energy, and can remove the heat energy generated by the battery 20 according to the user's operating conditions, or provide heat energy for the battery 20 to facilitate the operation of the battery module 2 .

In addition, in this embodiment, the material of the heat conduction sheet 110 is a metal heat conduction sheet. Because metal has good electrical conductivity, it can achieve voltage balance during pumping and discharging. However, in other embodiments, the material of the heat conduction sheet 110 may also be a non-metal heat conduction sheet. In the heat conduction sheet set 10 , the materials of any two heat conduction sheets 110 may be different from each other, for example, may include copper heat conduction sheets, aluminum heat conduction sheets or non-metal heat conduction sheets. Users can adjust it according to the actual heat dissipation or voltage balance requirements.

In addition, the battery 20 can be a conductive can body without an insulating layer or a can body with an insulating layer. If the battery 20 is a conductive can body without an insulating layer, the elastic structure 116 can make the battery 20 closely fit to the channel 120 , and the heat conducting sheet 110 can not only balance the heat of the battery module 2 , but also balance the voltage. When the battery 20 is a can body with an insulating layer, the elastic structure 116 can not only make the battery 20 tightly fit in the channel 120 , but also prevent the insulating layer of the battery 20 from being scratched when the battery 20 is installed.

Fig. 2 is a three-dimensional exploded schematic view of the combination of the heat conduction structure 1' and the battery 20 according to the second embodiment of the present invention. Different from the heat conduction structure 1 of the previous embodiment, the heat conduction structure 1' of this embodiment further includes an insulating heat conduction sheet 12. Please refer to FIG. 2 , the structure of the insulating and heat-conducting sheet 12 is similar to that of the heat-conducting sheet 110 , and it also has a bottom plate, a pair of side plates facing each other, and a plurality of elastic structures (not shown). However, unlike the heat conduction sheet 110, the insulating heat conduction sheet 12 can be used to connect and fix two adjacent heat conduction sheet groups 10, so that the two adjacent heat conduction sheet groups 10 are electrically insulated, so as to avoid two adjacent heat conduction sheet groups 10 The battery 20 is in electrical contact.

Fig. 3 is a three-dimensional exploded schematic diagram of the combination of the heat conduction structure 1" and the battery 20 according to the third embodiment of the present invention. Please refer to Fig. 3, different from the previous embodiment, in this embodiment, the shell 22' of the battery module 2' will be The second side L2 of the heat conduction sheet 110 in the heat conduction sheet group 10 is exposed, as well as the plane formed by connecting a plurality of side plates 114. For example, as shown in FIG. A shell 22a' and a second shell 22b'. The first shell 22a' will be from the direction of the first plane S1 in the heat conduction sheet group 10, and the second shell 22b' will be from the direction of the second plane S2 in the heat conduction sheet set 10 The direction of the insulation sheet 24, the battery 20 and the heat conduction sheet group 10 are covered therein. In addition, the first casing 22a' and the second casing 22b' can be joined together by means of, for example, screws.

In addition, the first housing 22a' further includes a pair of first openings 222a', and the second housing 22b' further includes a pair of second openings 222b'. When the first shell 22a' and the second shell 22b' are joined together, the first opening 222a' and the second opening 222b' will expose all the second sides L2 of the heat conducting sheet 110. The side plates 114 connected to the second side L2 are stacked together to form a plane. That is to say, the first opening 222a' and the second opening 222b' will expose the plane formed by connecting the plurality of side plates 114 .

In detail, since the shell 22' of the battery module 2' exposes the plane formed by the connection of the side plates 114, the plane formed by the connection of these side plates 114 can exchange heat with the outside, so that air cooling can be used. or liquid cooling to dissipate heat from the battery module 2 ′, so as to make the temperature inside the battery module 2 ′ uniform and achieve a good heat dissipation effect. For example, in this embodiment, the heat dissipation structure 1" may further include two heat conducting plates 14 (in FIG. 3, the number of heat conducting plates 14 is two, but the present invention is not limited thereto). The heat conducting plates 14 are configured on the casing 22', and attach and/or contact the plane formed by the side plates 114. The user can use a cooling system such as a water cooling plate (not shown) to help the battery module 2' dissipate heat, so as to achieve temperature uniformity Effect.

In addition, according to different usage situations, the battery module 2' may also be operated at a low temperature. At this time, the heat conducting sheet set 10 can play the role of conducting heat to the battery 20 . That is to say, the heat conduction sheet set 10 is a good conductor of heat conduction, and can remove the heat generated by the battery 20 according to the user's operating conditions, or provide heat energy to the battery 20 to facilitate the operation of the battery module 2'.

Fig. 4 is a schematic perspective view of a heat conducting sheet 110' according to Embodiment 4 of the present invention. Please refer to FIG. 4, different from the heat conduction sheet 110 in the first embodiment, in this embodiment, the heat conduction sheet 110' includes a plurality of buckle plates 114', and the buckle plates 114' can be used to replace the side plates of the previous embodiment 114. In detail, one side of the locking plate 114' is connected to the second side L2 of the bottom plate 112, and the locking plate 114' is only connected to a part of the second side L2. That is to say, only part of the second side L2 is connected to the buckle plate 114'. In addition, the locking plate 114' also has a groove and a hook (not shown in the figure), so that the hook of one heat conducting sheet 110' can engage with the groove of another heat conducting sheet 110'. Two adjacent heat conducting sheets 110' can be joined together without being easily separated.

It should be noted that, as shown in FIG. 4 , there are two locking plates 114 ′ on each second side L2, but this embodiment does not limit the number of locking plates 114 ′. In other embodiments , the number of snapping plates 114' can also be one or more than two. In addition, the locking plates 114' located on the two second sides L2 are arranged symmetrically with each other, but this embodiment does not limit the arrangement of the locking plates 114', and in other embodiments, the locking plates 114' may not be arranged in a symmetrical manner. The other structures of the heat conducting sheet 110' in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

Fig. 5 is a three-dimensional schematic diagram of a heat conduction sheet 110" according to Embodiment 5 of the present invention. Please refer to Fig. 5, the same as the previous embodiment, the heat conduction sheet 110" also has a plurality of buckle plates 114". In addition, the snap plate 114" also has a groove and a hook for combining with other heat conducting sheets 110". However, unlike the buckle plate 114' of the fourth embodiment, in this embodiment, one of the buckle plates 114" The side is connected to the first side L1, and the locking plate 114" is only connected to part of the first side L1. That is to say, the first side L1 is only partially connected to the locking plate 114".

It should be noted that, as shown in FIG. 5 , there are two buckling plates 114 ″ on each first side L1, but in other embodiments, the number of buckling plates 114 ″ can also be one or is greater than two. In addition, the buckling plates 114 ″ located on the two first sides L1 are arranged symmetrically with each other, but in other embodiments, the buckling plates 114 ″ may not be arranged symmetrically. In addition, in other embodiments, the locking plate 114" can also be located on the first side L1 and the second side L2 at the same time, the present invention is not limited thereto. Other structures of the heat conducting sheet 110' in this embodiment are the same as Embodiment 1 is the same, and details are not repeated here.

In summary, the present invention provides a heat conducting structure that can be used to combine with multiple batteries of a battery module. The heat conduction structure includes at least one heat conduction sheet group, and the heat conduction sheet group is formed by stacking a plurality of heat conduction sheets. The heat conducting sheet has a bottom plate and a pair of side plates connected to the bottom plate, and the bottom plate has a plurality of through holes. When the heat conduction sheets are stacked to form a heat conduction sheet group, a plurality of through holes will correspondingly form a channel so that the battery can be inserted therein. The side plates are connected to form a plane, so that the heat of the battery module can be dissipated by means of heat conduction. In addition, the sides of the bottom plate that are not connected to the side plates are stacked to form a hollow structure, so that the heat of the battery module can be dissipated by means of heat convection.

The above descriptions are only examples of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications and equivalent replacements made by those skilled in the art without departing from the spirit and scope of the present invention still fall within the protection scope of the present invention.

Claims (16)

1. a conductive structure, for being combined with multiple batteries of a battery module, it is characterised in that this conductive structure includes:

At least one conducting strip group, has multiple conducting strip, and each conducting strip includes a base plate, and this base plate has multiple through Hole, this base plate also has one first plane, one relative to the second plane of this first plane, the first side of being parallel to each other for a pair Limit, the second side being parallel to each other for a pair；

Those conducting strips are stacked with, and respectively this through hole on those conducting strips is mutually corresponding and forms multiple passage, and each This battery is inserted in those passages, and

This conducting strip each of this conducting strip group further includes:

At least one pair of side plate faced each other, this side plate is connected respectively this to second side, and each this side plate is dashed forward respectively Going out this first plane or this second plane of this conducting strip, at least a part of which one conducting strip also includes at least one pair of snap-in structure, should Snap-in structure is laid respectively at this on side plate, and in order to by the plurality of conducting strip snap engagement.

2. conductive structure as claimed in claim 1, it is characterised in that respectively this conducting strip of this conducting strip group also includes multiple bullet Property structure, connect this base plate, and this second plane prominent, and those elastic constructions be arranged at those through holes, and be inserted in this Respectively this battery in a little passages is fitted those elastic constructions.

3. conductive structure as claimed in claim 2, it is characterised in that make between the described first side of two adjacent conducting strips Form an engraved structure.

4. conductive structure as claimed in claim 1, it is characterised in that conducting strip also includes at least one pair of pinch plate, and this is right Pinch plate lay respectively at this to first side maybe this to second side.

5. conductive structure as claimed in claim 1, it is characterised in that this battery module also includes a shell, and this shell is coated with This conducting strip group, and expose this of those conducting strips to first side.

6. conductive structure as claimed in claim 3, it is characterised in that this battery module also includes a shell, and this shell is coated with This of this conducting strip group is to second side, and exposes in those conducting strips this at least one pair of side between two adjacent conducting strips Plate.

7. the conductive structure as according to any one of claim 1,2,3,4,5 or 6, it is characterised in that those batteries include band Insulated hull can body.

8. conductive structure as claimed in claim 1, it is characterised in that this snap-in structure also includes a groove and a snap fit.

9. the conductive structure as according to any one of claim 1,2,3,4,5 or 6, it is characterised in that those conducting strips are extremely One of them conducting strip few is metal conducting strip.

10. the conductive structure as according to any one of claim 1,2,3,4,5 or 6, it is characterised in that those conducting strips are extremely One of them conducting strip few is nonmetallic heat conductive sheet.

11. conductive structures as according to any one of claim 1,2,3,4,5 or 6, it is characterised in that the material of two conducting strips Matter is different.

12. conductive structures as according to any one of claim 1,2,3,4,5 or 6, it is characterised in that the side of two conducting strips The width of plate is different.

13. conductive structures as according to any one of claim 1,2,3,4,5 or 6, it is characterised in that the height of this conducting strip group Degree is less than or equal to the length of those batteries.

14. conductive structures as according to any one of claim 1,2,3,4,5 or 6, it is characterised in that the number of those through holes Amount is more than or equal to the quantity of those batteries.

15. conductive structures as according to any one of claim 1,2,3,4,5 or 6, it is characterised in that those batteries include not The conduction can body of tool insulating barrier cladding.

16. conductive structures as according to any one of claim 1,2,3,4,5 or 6, it is characterised in that those conducting strips are profits It is fabricated by by stamping mode.