CN220066021U - Battery module and electric equipment - Google Patents

Abstract

A battery module and electric equipment, the battery module includes a first battery, a second battery and a conductive member. The first battery includes a first cell and a first circuit board assembly electrically connected to the first cell. The thickness direction of the first cell extends along a first direction. The first circuit board assembly is arranged at one end of the first battery cell when being observed along the first direction. The second battery includes a second cell and a second circuit board assembly electrically connected to the second cell. The thickness direction of the second battery cell extends along the first direction, and the second battery cell and the first battery cell are arranged along the first direction. Along the first direction, the projection of the second circuit board assembly and the projection of the first circuit board assembly at least partially overlap. The conductive piece is blocky and fixedly connected between the first circuit board assembly and the second circuit board assembly, and the projection of the conductive piece is located in the overlapped projection range of the first circuit board assembly and the second circuit board assembly along the first direction. The battery module can improve the space utilization rate.

Description

Battery module and electric equipment

Technical Field

The utility model relates to the technical field of energy storage, in particular to a battery module and electric equipment.

Background

In order to meet the development trend of rapid charging of various electronic devices, a battery module is formed by a plurality of battery cores and a plurality of circuit board assemblies so as to improve the charge and discharge performance of the battery. In the battery structure of the related art, a plurality of circuit board assemblies are generally electrically connected through a flexible circuit board, and the space occupied by the flexible circuit board is large, so that the space utilization rate of the battery module is low.

Disclosure of Invention

In view of the above, it is necessary to provide a battery module capable of improving space utilization.

The embodiment of the utility model provides a battery module, which comprises a first battery, a second battery and a conductive piece. The first battery includes a first cell and a first circuit board assembly electrically connected to the first cell. The thickness direction of the first cell extends along a first direction. The first circuit board assembly is arranged at one end of the first battery cell when being observed along the first direction. The second battery includes a second cell and a second circuit board assembly electrically connected to the second cell. The thickness direction of the second battery cell extends along the first direction, and the second battery cell and the first battery cell are arranged along the first direction. Along the first direction, the projection of the second circuit board assembly and the projection of the first circuit board assembly at least partially overlap. The conductive piece is blocky and fixedly connected between the first circuit board assembly and the second circuit board assembly, and the projection of the conductive piece is located in the overlapped projection range of the first circuit board assembly and the second circuit board assembly along the first direction.

In the battery module, along the first direction, the projection of the conductive piece is positioned in the overlapped projection range of the first circuit board assembly and the second circuit board assembly, so that the space waste caused by the fact that the conductive piece protrudes out of the first circuit board assembly and the second circuit board assembly is reduced, the space occupied by the first circuit board assembly and the second circuit board assembly is reduced, and the space utilization rate of the battery module is improved.

In some embodiments of the utility model, the first circuit board assembly includes a first substrate and the second circuit board assembly includes a second substrate. The first substrate and the second substrate are oppositely arranged along the first direction, so that the area of overlapped projection of the first circuit board assembly and the second circuit board assembly is increased. Along the first direction, at least one of two sides of the first substrate is provided with a first electronic element, and at least one of two sides of the second substrate is provided with a second electronic element, so that the cloth area of the first circuit board assembly and the second circuit board assembly is improved.

In some embodiments of the utility model, the projection of the first substrate and the projection of the second substrate overlap in the first direction, which is advantageous for increasing the area of the overlapping projections of the first circuit board assembly and the second circuit board assembly.

In some embodiments of the utility model, the battery module further includes two first connection members and two second connection members. The two first connecting pieces are arranged at one side of the first substrate, which is away from the second substrate, at intervals, and the first connecting pieces are connected to the lugs of the first battery cell. The two second connecting pieces are arranged at one side of the second substrate, which is away from the first substrate, at intervals, and are connected to the lugs of the second battery cell. Through the arrangement, two first connecting pieces and two lugs of the first battery cell are connected in one-to-one correspondence in the first direction, and two second connecting pieces and two lugs of the second battery cell are connected in one-to-one correspondence in the first direction.

In some embodiments of the present utility model, the battery module further includes a plurality of first flexible circuit boards, wherein a portion of the first flexible circuit boards are connected to a side of the first substrate facing away from the second substrate, and another portion of the first flexible circuit boards are connected to a side of the second substrate facing away from the first substrate. The first circuit board assembly and the second circuit board assembly are matched through the plurality of first flexible circuit boards to conveniently pass through high current, and therefore quick charging of the battery module is conveniently achieved.

In some embodiments of the present utility model, a side of the first substrate facing the second substrate is provided with a first region and a second region arranged along a second direction, and the second direction is perpendicular to the first direction. The projection of the second substrate is located in the projection range of the first area along the first direction, so that the second area can be used for the cloth piece of the first electronic component with higher height, wherein the height direction of the first electronic component is the first direction.

In some embodiments of the utility model, the battery module further includes two third connecting members and two fourth connecting members. The two third connecting pieces are arranged on one side, deviating from the second substrate, of the first substrate at intervals, and the third connecting pieces are connected to the lugs of the first battery cell. One of the fourth connecting pieces is arranged on one side, deviating from the first substrate, of the second substrate, the other fourth connecting piece is arranged in the second area, the fourth connecting piece arranged in the second area is electrically connected with the second circuit board assembly through the conductive piece, and the fourth connecting piece is connected with the lug of the second electric core. Through the arrangement, two lugs of the two third connecting pieces and the first battery cells are connected in one-to-one correspondence in the first direction, and two lugs of the two fourth connecting pieces and the second battery cells are connected in one-to-one correspondence in the first direction.

In some embodiments of the utility model, the battery module further includes a plurality of second flexible circuit boards, wherein a portion of the second flexible circuit boards are connected to a side of the first substrate facing away from the second substrate and the second area, and another portion of the second flexible circuit boards are connected to a side of the second substrate facing away from the first substrate. The first circuit board assembly and the second circuit board assembly are convenient to pass through high current through the cooperation of a plurality of second flexible circuit boards, and then the quick charge of the battery module is convenient to realize.

In some embodiments of the present utility model, the first battery cell includes a first package including a first deep well face, a first shallow well face, and a first top seal, the first deep well face and the first shallow well face being disposed opposite each other along a first direction, the first top seal being disposed between the first deep well face and the first shallow well face and opposite the first circuit board assembly, the first deep well face having a width greater than a width of the first shallow well face along the first direction. The second battery cell comprises a second packaging bag, the second packaging bag comprises a second deep pit face, a second shallow pit face and a second top seal, the second deep pit face and the second shallow pit face are oppositely arranged along the first direction, the second top seal is arranged between the second deep pit face and the second shallow pit face and is oppositely arranged with the second circuit board assembly, and the width of the second deep pit face is larger than that of the second shallow pit face along the first direction. The second pit surface is adjacent to the first pit surface so that a space for accommodating the first circuit board assembly and the second circuit board assembly is formed between the second top seal and the first top seal, and the space utilization rate of the battery module is further improved.

The embodiment of the utility model also provides electric equipment, which comprises any one of the battery modules in the embodiment.

Among the above-mentioned battery module and the consumer, along the first direction, the projection of electrically conductive spare is located the projection scope of the overlap of first circuit board subassembly and second circuit board subassembly to reduce the protruding space waste that leads to outside stretching out first circuit board subassembly and the second circuit board subassembly of electrically conductive spare, be favorable to reducing the space that first circuit board subassembly and second circuit board subassembly occupy, improve battery module's space utilization.

Drawings

Fig. 1 is a schematic view of a structure of a battery module according to an embodiment of the present utility model.

Fig. 2 is a disassembled schematic view of a battery module according to an embodiment of the present utility model.

Fig. 3 is a schematic view illustrating the structure of a first circuit board assembly and a second circuit board assembly in a battery module according to an embodiment of the present utility model.

Fig. 4 is a schematic view of a structure of a battery module according to another embodiment of the present utility model.

Fig. 5 is a schematic view illustrating the structure of a first circuit board assembly and a second circuit board assembly in a battery module according to another embodiment of the present utility model.

Fig. 6 is a schematic view of a structure of a battery module according to another embodiment of the present utility model.

Fig. 7 is a schematic view of a structure of a battery module according to another embodiment of the present utility model.

Fig. 8 is a schematic diagram of a powered device according to an embodiment of the utility model.

Description of the main reference signs

Battery modules 100, 100a, 100b, 100c, 100d

Electric equipment 200

First cell 10

First cell 11

First side end 11a

Second side end 11b

Tip 11c

Bottom end 11d

First packaging bag 111

First deep pit surface 1111

First shallow pit 1112

First top seal 1113

First surface 1114

Second surface 1115

First side seal 1116

First tab 112

First circuit board assembly 12

First substrate 121

First region 121a

Second region 121b

First electronic component 122

Second battery 20

Second cell 21

Second packaging bag 211

Second deep pit surface 2111

Second shallow pit surface 2112

Second top seal 2113

Third surface 2114

Fourth surface 2115

Second side seal 2116

Second lug 212

Second circuit board assembly 22

Second substrate 221

Second electronic component 222

Conductive member 30

First connector 41

Second connector 42

Third connector 43

Fourth connecting piece 44

First flexible circuit board 51

Second flexible circuit board 52

Third cell 61

Third circuit board assembly 62

Fourth cell 63

Fourth Circuit Board Assembly 64

First direction X

Second direction Y

Third direction Z

Fourth direction A

Fifth direction B

Sixth direction C

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

The following description of the technical solutions according to the embodiments of the present utility model will be given with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

It should be understood that the term "vertical" is used in the present solution to describe the ideal situation between two components, taking into account the factors of the actual machining tolerances. In the actual production or use state, there may be an approximately vertical state between the two components. For example, in conjunction with the numerical description, perpendicular may refer to an angle between two straight lines ranging between 90++10°, perpendicular may also refer to a dihedral angle between two planes ranging between 90++10°, and perpendicular may also refer to an angle between a straight line and a plane ranging between 90++10°. The two components described as "perpendicular" may be considered "straight" or "planar" as they are considered "straight" or "planar" in that they are not strictly straight or planar, but may be substantially straight or planar in that they extend in a macroscopic manner.

The embodiment of the utility model provides a battery module, which comprises a first battery, a second battery and a conductive piece. The first battery includes a first cell and a first circuit board assembly electrically connected to the first cell. The thickness direction of the first cell extends along a first direction. The first circuit board assembly is arranged at one end of the first battery cell when being observed along the first direction. The second battery includes a second cell and a second circuit board assembly electrically connected to the second cell. The thickness direction of the second battery cell extends along the first direction, and the second battery cell and the first battery cell are arranged along the first direction. Along the first direction, the projection of the second circuit board assembly and the projection of the first circuit board assembly at least partially overlap. The conductive piece is blocky and fixedly connected between the first circuit board assembly and the second circuit board assembly, and the projection of the conductive piece is located in the overlapped projection range of the first circuit board assembly and the second circuit board assembly along the first direction.

In the battery module, along the first direction, the projection of the conductive piece is positioned in the overlapped projection range of the first circuit board assembly and the second circuit board assembly, so that the space waste caused by the fact that the conductive piece protrudes out of the first circuit board assembly and the second circuit board assembly is reduced, the space occupied by the first circuit board assembly and the second circuit board assembly is reduced, and the space utilization rate of the battery module is improved.

Embodiments of the present utility model will be further described below with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the utility model provides a battery module 100, wherein the battery module 100 includes a first battery 10, a second battery 20 and a conductive member 30. The conductive member 30 is electrically connected between the first battery 10 and the second battery 20 such that the first battery 10 and the second battery 20 are connected in series or in parallel, thereby facilitating the electrical connection of the battery module 100 to an external circuit.

The first battery 10 includes a first cell 11 and a first circuit board assembly 12 electrically connected to the first cell 11. The first electrical cell 11 is used to convert chemical energy into electrical energy, and the first circuit board assembly 12 may be used, but is not limited to, to monitor and manage the first electrical cell 11. The thickness direction of the first battery cell 11 extends along a first direction X, and the first circuit board assembly 12 is disposed at one end of the first battery cell 11 when viewed along the first direction X. Specifically, the first battery cell 11 is rectangular when viewed along the first direction X, defines the width direction of the first battery cell 11 as the second direction Y, and the length direction of the first battery cell as the third direction Z, where the first direction X, the second direction Y, and the third direction Z are perpendicular to each other, and correspondingly, the first battery cell 11 includes a first side end 11a and a second side end 11b that are disposed opposite to each other along the second direction Y, and a top end 11c and a bottom end 11d that are disposed opposite to each other along the third direction Z, and the first circuit board assembly 12 is adjacent to one of the top end 11c, the bottom end 11d, the first side end 11a, and the second side end 11 b.

The second battery 20 includes a second cell 21 for converting chemical energy into electrical energy and a second circuit board assembly 22 electrically connected to the second cell 21, the second circuit board assembly 22 being capable of, but not limited to, monitoring and managing the second cell 21. The thickness direction of the second cell 21 extends along the first direction X, and the second cell 21 and the first cell 11 are arranged along the first direction X.

Along the first direction X, the projection of the second circuit board assembly 22 and the projection of the first circuit board assembly 12 at least partially overlap. The conductive member 30 is fixedly connected between the first circuit board assembly 12 and the second circuit board assembly 22 such that the first circuit board assembly 12 is electrically connected to the second circuit board assembly 22. Along the first direction X, the projection of the conductive member 30 is located within the overlapping projection range of the first circuit board assembly 12 and the second circuit board assembly 22, so as to reduce the space waste caused by the conductive member 30 protruding out of the first circuit board assembly 12 and the second circuit board assembly 22, thereby being beneficial to reducing the space occupied by the first circuit board assembly 12 and the second circuit board assembly 22 and improving the space utilization rate of the battery module 100.

Referring to fig. 2, in some embodiments, the conductive member 30 is in a block shape and made of a conductive material, and the conductive member 30 is fixedly connected between the first circuit board assembly 12 and the second circuit board assembly 22, so that the connection strength between the first circuit board assembly 12 and the second circuit board assembly 22 can be improved, and the first circuit board assembly 12 and the second circuit board assembly 22 form an integral mechanism, thereby improving the structural stability of the battery module 100. Alternatively, the conductive member 30 is connected to the first circuit board assembly 12 and the second circuit board assembly 22 at both ends thereof by soldering, respectively.

Alternatively, the cross-section of the conductive member 30 perpendicular to the first direction X is rectangular, circular, triangular, polygonal, fan-shaped, elliptical or other irregular shape.

Optionally, the conductive member 30 is a nickel block. It is understood that the conductive member 30 may also be a nickel plate or a flexible circuit board.

In some embodiments, the number of the conductive members 30 is plural to form plural current loops between the first circuit board assembly 12 and the second circuit board assembly 22, so that the first circuit board assembly 12 and the second circuit board assembly 22 can pass a large current, and thus the battery module 100 can be charged quickly. Alternatively, the number of conductive members 30 is one of any other values in the range of 2, 3, 4, 5, and more than 2.

Referring to fig. 1 and fig. 2 together, in some embodiments, the first circuit board assembly 12 includes a first substrate 121, the second circuit board assembly 22 includes a second substrate 221, the first substrate 121 and the second substrate 221 are respectively flat, the first substrate 121 and the second substrate 221 are disposed opposite to each other along a first direction X, and the conductive member 30 is fixedly connected to opposite sides of the first substrate 121 and the second substrate 221. Specifically, the thickness directions of the first substrate 121 and the second substrate 221 are respectively set along the first direction X, so that the first substrate 121 and the second substrate 221 are respectively vertically disposed on the sides of the corresponding first battery core 11 and the second battery core 21, which is favorable for increasing the area of the overlapping projection of the first circuit board assembly 12 and the second circuit board assembly 22, and further is favorable for positioning the projection of the conductive member 30 in the overlapping projection range of the first circuit board assembly 12 and the second circuit board assembly 22.

The opposing arrangement of the first and second substrates 121 and 221 along the first direction X also facilitates increasing the footprint of the first and second circuit board assemblies 12 and 22. Specifically, the first circuit board assembly 12 further includes a first electronic component 122 and the second circuit board assembly 22 further includes a second electronic component 222. Along the first direction X, at least one of two sides of the first substrate 121 is provided with a first electronic component 122, at least one of two sides of the second substrate 221 is provided with a second electronic component 222, and the first electronic component 122 and the second electronic component 222 are respectively used for realizing a circuit function.

Referring to fig. 3, in some embodiments, a side of the first substrate 121 facing the second substrate 221 is provided with a first electronic device 122, and a side of the second substrate 221 facing the first substrate 121 is provided with a second electronic device 222, and the first electronic device 122 and the second electronic device 222 can utilize the space occupied by the conductive member 30 in the first direction X to increase the space utilization of the battery module 100.

Specifically, when the sum of the thicknesses of the first electronic component 122 and the second electronic component 222 in the first direction X is greater than or equal to the thickness of the conductive member 30 in the first direction X, the projection intervals of the first electronic component 122 and the second electronic component 222 along the first direction X are set to reduce the risk of the first electronic component 122 and the second electronic component 222 interfering with each other. When the sum of the thicknesses of the first electronic component 122 and the second electronic component 222 in the first direction X is smaller than the thickness of the conductive member 30 in the first direction X, the projections of the first electronic component 122 and the second electronic component 222 at least partially overlap along the first direction X to further improve the utilization of the layout area of the first circuit board assembly 12 and the second circuit board assembly 22.

It can be understood that, in other embodiments, the thickness directions of the first substrate 121 and the second substrate 221 are respectively along the third direction Z, so that the first substrate 121 and the second substrate 221 are respectively laid on one side of the corresponding first battery cell 11 and one side of the corresponding second battery cell 21, the conductive member 30 is fixedly connected to two opposite sides of the first substrate 121 and the second substrate 221, at least one of the two sides of the first substrate 121 is provided with the first electronic component 122, and at least one of the two sides of the second substrate 221 is provided with the second electronic component 222 along the third direction Z.

Referring to fig. 2 and 3 together, in some embodiments, the first battery cell 11 includes a first package bag 111, where the first package bag 111 includes a first pit surface 1111, a first pit surface 1112, and a first top seal 1113, and the first pit surface 1111 and the first pit surface 1112 are respectively perpendicular to the third direction Z and are oppositely disposed along the first direction X. The first top seal 1113 is disposed between the first pit surface 1111 and the first pit surface 1112, and the first top seal 1113 extends in the third direction Z. The width of the first pit surface 1111 is greater than the width of the first pit surface 1112 in the first direction X. The first top seal 1113 is disposed opposite to the first circuit board assembly 12 along the first direction X, and the first circuit board assembly 12 is disposed on the first pit surface 1111, so that the first circuit board assembly 12 uses the space on the first pit surface 1111, and the space utilization of the battery module 100 is improved. Alternatively, the width of the first dimple surface 1112 is 0, i.e., the first cell 11 is a single-dimple cell, along the first direction X.

Specifically, the first package bag 111 further includes a first surface 1114 and a second surface 1115, the first surface 1114 and the second surface 1115 are two large surfaces of the first battery 11, the first surface 1114 and the second surface 1115 are oppositely disposed along the first direction X, the first pit surface 1111, the first pit surface 1112 and the first top seal 1113 are located at one ends of the first surface 1114 and the second surface 1115 in the third direction Z, the first pit surface 1111 is located between the first surface 1114 and the first top seal 1113, and the first pit surface 1112 is located between the second surface 1115 and the first top seal 1113.

The second battery cell 21 includes a second package bag 211, and the second package bag 211 includes a second deep pit surface 2111, a second shallow pit surface 2112, and a second top seal 2113, the second deep pit surface 2111 and the second shallow pit surface 2112 being respectively perpendicular to the third direction Z and oppositely disposed along the first direction X. The second top seal 2113 is provided between the second deep pit surface 2111 and the second shallow pit surface 2112, and the second top seal 2113 extends in the third direction Z. The width of the second pit surface 2111 is greater than the width of the second pit surface 2112 in the first direction X. The second top seal 2113 and the second circuit board assembly 22 are disposed opposite to each other along the first direction X, and the second circuit board assembly 22 is disposed on the second pit surface 2111, so that the second circuit board assembly 22 is beneficial to the space on the second pit surface 2111, and the space utilization of the battery module 100 is improved. Optionally, the width of the second shallow pit surface 2112 is 0 along the first direction X, i.e. the second cell 21 is a single pit cell.

Specifically, the second package bag 211 further includes a third surface 2114 and a fourth surface 2115, the third surface 2114 and the fourth surface 2115 being two large faces of the second cell 21, the third surface 2114 and the fourth surface 2115 being disposed opposite to each other along the first direction X, the second deep-well surface 2111, the second shallow-well surface 2112, and the second top seal 2113 being located at one ends of the third surface 2114 and the fourth surface 2115 in the third direction Z, and the second deep-well surface 2111 being located between the third surface 2114 and the second top seal 2113, the second shallow-well surface 2112 being located between the fourth surface 2115 and the second top seal 2113.

The first surface 1114 and the third surface 2114 are disposed opposite to each other, and the second concave surface 2111 is adjacent to the first concave surface 1111, so that a space accommodating the first circuit board assembly 12 and the second circuit board assembly 22 is formed between the second top seal 2113 and the first top seal 1113, thereby further improving the space utilization of the battery module 100.

With continued reference to fig. 2 and 3, in some embodiments, the first package 111 further includes two first side seals 1116, where the two first side seals 1116 are disposed opposite to each other along the second direction Y, and a portion of the two first side seals 1116 protruding from the first pit surface 1111 is connected to the first top seal 1113 and extends along the first direction X, so as to form a space for accommodating the first circuit board assembly 12, and the first side seals 1116 located at two ends of the first circuit board assembly 12 can protect the first circuit board assembly 12.

In some embodiments, the second packaging bag 211 further includes two second side seals 2116, where the two second side seals 2116 are disposed opposite to each other along the second direction Y, and the portions of the two second side seals 2116 protruding from the second deep hole surface 2111 are connected to the second top seal 2113 and extend along the first direction X, so as to form a space for accommodating the second circuit board assembly 22, and the second side seals 2116 located at two ends of the second circuit board assembly 22 can protect the second circuit board assembly 22.

In some embodiments, the battery module 100 further includes a heat conductive member (not shown) filled between the first and second circuit board assemblies 12 and 22 so as to increase the heat dissipation capacity of the first and second circuit board assemblies 12 and 22 and reduce the temperature rise of the first and second circuit board assemblies 12 and 22.

Optionally, the heat conducting piece is vulcanized silicone rubber, the bonding strength of the vulcanized silicone rubber after curing is more than or equal to 1.5Mpa, and the heat conductivity is 1.5w/m.k.

It should be noted that, along the first direction X, the projection of the first substrate 121 and the projection of the second substrate 221 overlap, or along the second direction Y, the length of the projection of the second substrate 221 in the first direction X is smaller than the length of the projection of the first substrate 121 in the first direction X, and the projection of the second substrate 221 overlaps with the projection of the first substrate 121. For convenience of distinction, the following description is given of the first embodiment and the second embodiment, wherein the first embodiment provides a battery module 100a in which the projection of the first substrate 121 and the projection of the second substrate 221 overlap. The second embodiment provides a battery module 100b, wherein, along the second direction Y, the length of the projection of the second substrate 221 in the first direction X is smaller than the length of the projection of the first substrate 121 in the first direction X, and the projection of the second substrate 221 overlaps with the projection of the first substrate 121.

Example 1

Referring to fig. 1 and 3 together, along the first direction X, the projection of the first substrate 121 and the projection of the second substrate 221 overlap, which is beneficial to increasing the area of the overlapping projections of the first circuit board assembly 12 and the second circuit board assembly 22.

The battery module 100a further includes two first connection members 41 and two second connection members 42. The two first connecting pieces 41 are disposed at a side of the first substrate 121 away from the second substrate 221 at intervals, and the first connecting pieces 41 are connected to the first tab 112 of the first electric core 11, so that the first circuit board assembly 12 is electrically connected to the first electric core 11. The two second connecting pieces 42 are disposed at a side of the second substrate 221 away from the first substrate 121 at intervals, and the second connecting pieces 42 are connected to the second lugs 212 of the second electric core 21, so that the second circuit board assembly 22 is electrically connected to the second electric core 21. The above arrangement facilitates one-to-one connection of the two first connection members 41 and the two first tabs 112 of the first battery cell 11 in the first direction X, and facilitates one-to-one connection of the two second connection members 42 and the two second tabs 212 of the second battery cell 21 in the first direction X.

Optionally, the first connecting piece 41 and the second connecting piece 42 are nickel plates respectively, the structures of the first connecting piece 41 and the second connecting piece 42 are the same, taking the first connecting piece 41 as an example, the first tab 112 extends out from the first top seal 1113, the first connecting piece 41 is in a U-shaped arrangement, and a part of the first tab 112 away from the first top seal 1113 is located in the U-shaped structure of the first connecting piece 41 and is welded and connected with the first connecting piece 41.

The battery module 100a further includes a plurality of first flexible circuit boards 51, wherein a part of the first flexible circuit boards 51 are connected to one side of the first substrate 121, which is away from the second substrate 221, and another part of the first flexible circuit boards 51 are connected to one side of the second substrate 221, which is away from the first substrate 121, the first flexible circuit boards 51 are electrically connected to an external circuit, and the first circuit board assemblies 12 and the second circuit board assemblies 22 are convenient to pass through high currents through the cooperation of the plurality of first flexible circuit boards 51, so that the battery module 100 can be charged quickly.

Alternatively, the number of the first flexible circuit boards 51 is four, two of which are located at both ends of the first substrate 121 in the second direction Y, and the other two of which are located at both ends of the second substrate 221 in the second direction Y.

It will be appreciated that in other embodiments, the first circuit board assembly 12 and corresponding first flexible circuit board 51 are rigid-flex boards and/or the second circuit board assembly 22 and corresponding first flexible circuit board 51 are rigid-flex boards. Taking the first circuit board assembly 12 and the corresponding first flexible circuit board 51 as an example, the soft and hard combined board specifically refers to a circuit board assembly formed by combining the first circuit board assembly 12 as a hard board and the corresponding first flexible circuit board 51 as a soft board through pressing and other procedures, which is beneficial to improving the integration level of the first circuit board assembly 12 and the first flexible circuit board 51.

Example two

Referring to fig. 4 and 5, along the second direction Y, the length of the projection of the second substrate 221 in the first direction X is smaller than the length of the projection of the first substrate 121 in the first direction X, and the projection of the second substrate 221 overlaps with the projection of the first substrate 121. Specifically, a side of the first substrate 121 facing the second substrate 221 is provided with a first region 121a and a second region 121b aligned in the second direction Y. The projection of the second substrate 221 along the first direction X is located within the projection range of the first area 121a, so that the second area 121b can be used for the cloth of the first electronic component 122 with a higher height, where the height direction of the first electronic component 122 is the first direction X.

The battery module 100b further includes two third connecting members 43 and two fourth connecting members 44, where the two third connecting members 43 are disposed at a side of the first substrate 121 facing away from the second substrate 221 at intervals, and the third connecting members 43 are connected to the first tab 112 of the first electric core 11, so that the first circuit board assembly 12 is electrically connected to the first electric core 11. One of the fourth connecting members 44 is disposed on a side of the second substrate 221 away from the first substrate 121, the other fourth connecting member 44 is disposed in the second region 121b, the fourth connecting member 44 disposed in the second region 121b is electrically connected to the second circuit board assembly 22 through the conductive member 30, and the fourth connecting member 44 is connected to the second tab 212 of the second electrical core, so that the second circuit board assembly 22 is electrically connected to the second electrical core 21. The above arrangement facilitates one-to-one connection of the two third connection members 43 and the two first tabs 112 of the first battery cell 11 in the first direction X, and facilitates one-to-one connection of the two fourth connection members 44 and the two second tabs 212 of the second battery cell 21 in the first direction X.

The battery module 100b further includes a plurality of second flexible circuit boards 52, wherein a portion of the second flexible circuit boards 52 are connected to the side of the first substrate 121 facing away from the second substrate 221 and the second area 121b, and another portion of the second flexible circuit boards 52 are connected to the side of the second substrate 221 facing away from the first substrate 121. The second flexible circuit board 52 is used for electrically connecting with an external circuit, and the first circuit board assembly 12 and the second circuit board assembly 22 are convenient to pass through large current through the cooperation of a plurality of second flexible circuit boards 52, so that the battery module 100 can be conveniently charged quickly.

Alternatively, the number of the second flexible circuit boards 52 is four, two of which are located at one side of the first substrate 121 facing away from the second substrate 221 and at two sides in the second direction Y, and the other two of which are located at one end of the second region 121b and the second substrate 221 facing away from the first substrate 121 and away from the second region 121b, respectively.

It is understood that the third connecting member 43 and the fourth connecting member 44 have the same structure as the first connecting member 41, the first circuit board assembly 12 and the corresponding second flexible circuit board 52 may be a rigid-flex board, and/or the second circuit board assembly 22 and the corresponding second flexible circuit board 52 may be a rigid-flex board, which will not be described herein.

It is understood that in other embodiments, the number of the batteries included in the battery module 100 may be three or more, each battery includes a core and a circuit board assembly, and two adjacent batteries are arranged in a consistent manner with the first battery 10 and the second battery 20, and correspondingly, the two adjacent circuit board assemblies are connected through the conductive member 30.

It will be appreciated that referring to fig. 6, the embodiment of the utility model further provides a battery module 100c, and unlike the above embodiment, the battery module 100c further includes two third battery cells 61 and three third circuit board assemblies 62. The thickness direction of the third cells 61 extends in the fourth direction a, and the two third cells 61 are arranged in the fourth direction a. Three third circuit board assemblies 62 are provided at one end of the two third electric cores 61. In the fourth direction a, projections of adjacent two third circuit board assemblies 62 at least partially overlap, and the adjacent two third circuit board assemblies 62 are connected by the conductive member 30.

It will be appreciated that referring to fig. 7, the embodiment of the utility model further provides a battery module 100d, and the battery module 100c includes four fourth cells 63 and three fourth circuit board assemblies 64, unlike the above embodiment. The thickness direction of the fourth cells 63 extends along the fifth direction B, the width direction of the fourth cells 63 extends along the sixth direction C, every two fourth cells 63 are arranged along the sixth direction C to form a cell group, and the two cell groups are arranged along the fifth direction B. Three fourth circuit board assemblies 64 are provided at one end of the four fourth cells 63. In the fifth direction B, the projections of two adjacent fourth circuit board assemblies 64 at least partially overlap, and the adjacent fourth circuit board assemblies 64 are connected by the conductive member 30.

Referring to fig. 8, an embodiment of the present utility model further provides an electric device 200, including any one of the battery modules 100 in the above embodiment. The electric equipment 200 can be, but not limited to, an electronic terminal such as a mobile phone, a tablet, a camera, an unmanned aerial vehicle, etc.

In summary, in the battery module 100 and the electric device 200, along the first direction X, the projection of the conductive member 30 is located within the overlapping projection range of the first circuit board assembly 12 and the second circuit board assembly 22, so as to reduce the space waste caused by the conductive member 30 protruding out of the first circuit board assembly 12 and the second circuit board assembly 22, which is beneficial to reducing the space occupied by the first circuit board assembly 12 and the second circuit board assembly 22 and improving the space utilization of the battery module 100.

Further, other variations within the spirit of the present utility model will occur to those skilled in the art, and it is intended, of course, that such variations be included within the scope of the present utility model as disclosed herein.

Claims (10)

1. A battery module, comprising:

the first battery comprises a first electric core and a first circuit board assembly electrically connected with the first electric core, the thickness direction of the first electric core extends along a first direction, and the first circuit board assembly is arranged at one end of the first electric core when being observed along the first direction;

the second battery comprises a second electric core and a second circuit board assembly electrically connected to the second electric core, the thickness direction of the second electric core extends along the first direction, the second electric core and the first electric core are arranged along the first direction, and the projection of the second circuit board assembly and the projection of the first circuit board assembly at least partially overlap along the first direction;

the conductive piece is blocky and fixedly connected between the first circuit board assembly and the second circuit board assembly, and along the first direction, the projection of the conductive piece is located in the overlapped projection range of the first circuit board assembly and the second circuit board assembly.

2. The battery module of claim 1, wherein the first circuit board assembly comprises a first substrate and the second circuit board assembly comprises a second substrate, the first substrate and the second substrate being disposed opposite each other along the first direction, at least one of two sides of the first substrate being provided with a first electronic component along the first direction, and at least one of two sides of the second substrate being provided with a second electronic component.

3. The battery module of claim 2, wherein the projection of the first substrate and the projection of the second substrate coincide in the first direction.

4. The battery module of claim 3, further comprising two first connecting members and two second connecting members, wherein the two first connecting members are disposed at intervals on one side of the first substrate facing away from the second substrate, the first connecting members are connected to the first tab of the first cell, the two second connecting members are disposed at intervals on one side of the second substrate facing away from the first substrate, and the second connecting members are connected to the second tab of the second cell.

5. The battery module of claim 3, further comprising a plurality of first flexible circuit boards, wherein a portion of the first flexible circuit boards are connected to a side of the first substrate facing away from the second substrate, and a portion of the first flexible circuit boards are connected to a side of the second substrate facing away from the first substrate.

6. The battery module according to claim 2, wherein a side of the first substrate facing the second substrate is provided with a first region and a second region arranged along a second direction, the second direction being perpendicular to the first direction, and a projection of the second substrate along the first direction is located within a projection range of the first region.

7. The battery module of claim 6, further comprising two third connecting members and two fourth connecting members, wherein the two third connecting members are disposed at intervals on one side of the first substrate facing away from the second substrate, the third connecting members are connected to the first tab of the first cell, one of the fourth connecting members is disposed on one side of the second substrate facing away from the first substrate, the other of the fourth connecting members is disposed in the second region, and the fourth connecting members are connected to the second tab of the second cell.

8. The battery module of claim 6, further comprising a plurality of second flexible circuit boards, wherein a portion of the second flexible circuit boards are connected to a side of the first substrate facing away from the second substrate and the second region, and another portion of the second flexible circuit boards are connected to a side of the second substrate facing away from the first substrate.

9. The battery module of claim 1, wherein the first cell comprises a first package bag comprising a first deep well face, a first shallow well face, and a first top seal, the first deep well face and the first shallow well face being disposed opposite in the first direction, the first top seal being disposed between the first deep well face and the first shallow well face and opposite the first circuit board assembly, the first deep well face having a width greater than a width of the first shallow well face in the first direction;

the second battery cell comprises a second packaging bag, the second packaging bag comprises a second deep pit face, a second shallow pit face and a second top seal, the second deep pit face and the second shallow pit face are oppositely arranged along the first direction, the second top seal is arranged between the second deep pit face and the second shallow pit face and is oppositely arranged with the second circuit board assembly, and the width of the second deep pit face is larger than that of the second shallow pit face along the first direction;

the second pit face is adjacent to the first pit face.

10. An electrical device, characterized in that the electrical device comprises a battery module according to any one of claims 1 to 9.