CN219067149U - Battery pack and battery pack - Google Patents

Abstract

The utility model discloses a battery pack and a battery pack. The plurality of battery monomers are arranged in sequence along a first direction, each battery monomer comprises a battery monomer body, a first conductive connecting sheet and a second conductive connecting sheet, the battery monomer body is provided with a first polar column and a second polar column, one of the first polar column and the second polar column is a positive polar column, the other of the first polar column and the second polar column is a negative polar column, the first conductive connecting sheet is electrically connected with the first polar column, the second conductive connecting sheet is electrically connected with the second polar column, the first conductive connecting sheet of one of two adjacent battery monomers is electrically connected with the second conductive connecting sheet of the other of the two adjacent battery monomers, and each battery monomer is an independent forming part. According to the battery pack provided by the embodiment of the utility model, the battery pack comprises a plurality of battery cells, each battery cell comprises two conductive connecting sheets, the battery cells can be conveniently reworked in the technical process when being electrically connected, the assembly yield of the battery cells can be improved, and the assembly rejection rate is reduced.

Description

Battery pack and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack and a battery pack.

Background

In the related art, a plurality of battery cells are electrically connected through conductive connecting sheets to form a battery module. In the process of assembling a plurality of battery cells into a battery module, the plurality of battery cells are usually placed in a battery system, then the conductive connecting sheet is placed in the battery system, two adjacent battery cells are electrically connected through one conductive connecting sheet, specifically, two ends of the conductive connecting sheet are respectively welded with the poles of the two adjacent battery cells, so that the plurality of battery cells can be assembled into the battery module.

However, in the process of assembling a plurality of battery cells into a battery module, once the welding position of the conductive connecting sheet and the pole column is abnormal, the battery cells are damaged, and the whole battery module is possibly scrapped. Thus, improvements are needed.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a battery pack, which includes a plurality of battery cells, each of the battery cells includes two conductive connection pieces, in the process of assembling the plurality of battery cells to form the battery pack, the plurality of battery cells are placed in a battery system to be assembled to form the battery pack, since each battery cell is provided with two conductive connection pieces in advance, when two adjacent battery cells are electrically connected, the conductive connection pieces of the two adjacent battery cells are connected, in the process of connection, for example, in the process of welding, since the connection position or the welding position is not at the post position, even if the connection abnormality or the welding abnormality occurs, the battery cell body (i.e. the battery cell is not affected) or the influence on the battery cell body is reduced, the process can be conveniently reworked, thereby improving the assembly yield of the plurality of battery cells and reducing the assembly rejection rate.

The utility model also provides a battery pack with the battery pack.

The battery pack according to the embodiment of the first aspect of the present utility model includes: the battery comprises a plurality of battery monomers, wherein the battery monomers are sequentially arranged along a first direction, each battery monomer comprises a battery monomer body, a first conductive connecting sheet and a second conductive connecting sheet, the battery monomer body is provided with a first pole column and a second pole column, one of the first pole column and the second pole column is a positive pole column, the other of the first pole column and the second pole column is a negative pole column, the first conductive connecting sheet is electrically connected with the first pole column, the second conductive connecting sheet is electrically connected with the second pole column, the first conductive connecting sheet of one of two adjacent battery monomers is electrically connected with the second conductive connecting sheet of the other of the two adjacent battery monomers, and each battery monomer is an independent forming part.

According to the battery pack provided by the embodiment of the utility model, the battery pack comprises a plurality of battery cells, each battery cell comprises two conductive connecting sheets, in the process of assembling the plurality of battery cells to form the battery pack, the plurality of battery cells are placed in a battery system to be assembled to form the battery pack, as each battery cell is provided with two conductive connecting sheets in advance, when two adjacent battery cells are electrically connected, the conductive connecting sheets of the two adjacent battery cells are connected, in the process of connection, for example, in the process of welding, because the connection position or the welding position is not at the post position, even if the connection abnormality or the welding abnormality occurs, the battery cell body (namely, the electric core is not influenced) is not influenced or the influence on the battery cell body is reduced, and the process can be convenient to repair, so that the assembly yield of the plurality of battery cells is improved, and the assembly rejection rate is reduced.

According to some embodiments of the utility model, the first direction is a thickness direction of the battery cell, the first pole and the second pole are both located at one end of the battery cell body along a second direction, and the first pole and the second pole are arranged at intervals along a third direction, the second direction is a length direction of the battery cell, and the third direction is a width direction of the battery cell; the first conductive connecting sheet and the second conductive connecting sheet extend to the same side of the battery cell body along the third direction.

According to some optional embodiments of the utility model, an insulating layer is provided between the first conductive connecting piece and the second conductive connecting piece; and/or, a groove is formed on one side of the battery cell body along the first direction, the groove is positioned at one end of the battery cell body along the second direction, and the first pole and the second pole are both positioned in the groove and are arranged on the bottom wall of the groove.

According to some optional embodiments of the utility model, the first conductive connecting piece comprises a first inner switching part and a first outer switching part which are arranged at an included angle, the second conductive connecting piece comprises a second inner switching part and a second outer switching part which are arranged at an included angle, the first inner switching part is electrically connected with the first pole, the second inner switching part is electrically connected with the second pole, the first outer switching part and the second outer switching part are both positioned on the same side of the battery cell body along the third direction, and the first outer switching part and the second outer switching part between two adjacent battery cells are electrically connected.

According to some optional embodiments of the utility model, the third direction is an up-down direction, the first outer switching part and the second outer switching part are both located on the upper side of the battery cell body, the first pole is located above the second pole, the second conductive connecting piece further comprises a connecting part connected between the second inner switching part and the second outer switching part, the connecting part is located on one side of the first inner switching part far away from the battery cell body, the connecting part is opposite to the first inner switching part, and an insulating layer is coated on the outer surface of the connecting part.

According to some alternative embodiments of the utility model, the first and second external switching parts of the same battery cell are spaced apart in the first direction and extend in opposite directions.

According to some alternative embodiments of the present utility model, the second external switching portion of one of the adjacent two battery cells is located on the upper side of the first external switching portion of the other of the adjacent two battery cells and is electrically connected, and the battery cells further include an insulating bracket, and the insulating bracket is disposed between the first external switching portion of the same battery cell and the corresponding battery cell body.

According to some alternative embodiments of the present utility model, the first outer switching portion of one of the adjacent two battery cells and the second outer switching portion of the other of the adjacent two battery cells are disposed to overlap in the third direction, the first outer switching portion of one of the adjacent two battery cells has a first surface, the second outer switching portion of the other of the adjacent two battery cells has a second surface, the first surface is opposite to and electrically connected with the second surface in the third direction, and the first surface is parallel to the second surface.

According to some optional embodiments of the present utility model, a temperature adjusting plate is disposed between adjacent battery cells, the temperature adjusting plate is used for adjusting the temperature of the battery cells, an avoidance notch is disposed on one side of the temperature adjusting plate along the third direction, and the avoidance notch is used for avoiding at least one of the first conductive connecting sheet and the second conductive connecting sheet.

A battery pack according to an embodiment of the second aspect of the present utility model includes: the battery pack according to the embodiment of the first aspect of the present utility model described above.

According to the battery pack disclosed by the embodiment of the utility model, by arranging the battery pack, in the process of connecting two adjacent battery monomers, for example, in the welding process, as the connecting position or the welding position is not at the pole post position, even if the connection or the welding is abnormal, the battery monomer body (namely, the battery core is not influenced) is not influenced or the influence on the battery monomer body is reduced, the process can be conveniently repaired, so that the assembly yield of a plurality of battery monomers is improved, and the assembly rejection rate is reduced.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a perspective view of a battery pack according to some embodiments of the present utility model, in which an upper side of the battery pack is open;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a top view of the battery pack of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 5 is an enlarged view at C in fig. 4;

fig. 6 is an assembled perspective view of the battery cell and the temperature adjustment plate of fig. 1;

fig. 7 is an enlarged view at D in fig. 6;

fig. 8 is an assembled perspective view of the battery cell and the temperature adjustment plate of fig. 6, in which the insulating holder is not placed;

fig. 9 is an assembled perspective view of the battery cell body, the first conductive connecting piece, the insulating holder and the temperature adjusting plate of fig. 6;

fig. 10 is an assembled perspective view of the battery cell body, the first conductive connecting piece and the temperature adjusting plate of fig. 6;

fig. 11 is an assembled perspective view of the battery cell body and the temperature adjustment plate of fig. 6;

fig. 12 is a perspective view of a battery cell according to other embodiments of the present utility model;

fig. 13 is an enlarged view at E in fig. 12;

fig. 14 is a perspective view of the battery cell body of fig. 12.

Reference numerals:

100. a battery pack; 101. a receiving chamber; 102. a battery pack; 103. a case;

10. a battery cell; 1. a battery cell body; 11. a first pole; 12. a second post; 13. a first conductive connecting piece; 131. a first internal adaptor; 132. a first outer adapter; 133. a first surface; 14. a second conductive connecting piece; 141. a second internal adaptor; 142. a connection part; 143. a second outer adapter; 144. a second surface; 15. a groove; 151. a bottom wall;

21. an insulating layer; 22. an insulating support; 23. a temperature adjusting plate; 231. avoiding the notch; 24. and an acquisition unit.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A battery pack 102 according to an embodiment of the present utility model is described below with reference to fig. 1 to 14.

According to the battery pack 102 of the embodiment of the first aspect of the present utility model, referring to fig. 1 to 14, the battery pack 102 includes a plurality of battery cells 10, the plurality of battery cells 10 are sequentially arranged along a first direction (e.g., referring to an e1 direction in the drawings), each battery cell 10 includes a battery cell body 1, a first conductive connecting piece 13, and a second conductive connecting piece 14, the battery cell body 1 has a first electrode post 11 and a second electrode post 12, one of the first electrode post 11 and the second electrode post 12 is a positive electrode post and the other is a negative electrode post, for example, the first electrode post 11 may be a positive electrode post, and the second electrode post 12 may be a negative electrode post; for another example, the first electrode 11 may be a negative electrode, and the second electrode 12 may be a positive electrode.

The first conductive connection piece 13 is electrically connected to the first pole 11, for example, the first conductive connection piece 13 and the first pole 11 may be connected by welding, screwing or riveting; the second conductive tab 14 is electrically connected to the second post 12, for example, the second conductive tab 14 and the second post 12 may be welded, screwed or riveted. The first conductive connecting piece 13 of one of the adjacent two battery cells 10 is electrically connected with the second conductive connecting piece 14 of the other of the adjacent two battery cells 10, and the electrical connection of the two connected battery cells 10 can be achieved. For example, the first conductive connecting piece 13 and the second conductive connecting piece 14 between two adjacent battery cells 10 may be connected by welding, screwing or riveting. Each battery cell 10 is an independent molding piece, after each battery cell 10 is independently molded, one battery cell 10 and the other battery cell 10 are arranged along the first direction, and the first conductive connecting sheet 13 of one battery cell 10 is electrically connected with the second conductive connecting sheet 14 of the other battery cell 10, so that the battery cell 10 can be maintained or replaced in the assembly process.

Each battery cell 10 may include a first conductive tab 13 and a second conductive tab 14, the first conductive tab 13 may be electrically connected to the first pole 11, and the second conductive tab 14 may be electrically connected to the second pole 12. In the process of assembling the plurality of battery cells 10 to form the battery pack 102, the plurality of battery cells 10 are placed in the battery system to form the battery pack 102, because each battery cell 10 is provided with two conductive connecting pieces in advance, namely, the two conductive connecting pieces are the first conductive connecting piece 13 and the second conductive connecting piece 14 respectively, when two adjacent battery cells 10 are electrically connected, the conductive connecting pieces of the two adjacent battery cells 10 are connected, in the connecting process, for example, in the welding process, because the connecting position or the welding position is not at the post position, even if the connecting abnormality or the welding abnormality occurs, the battery cell body 1 (namely, the electric core is not influenced) is not influenced or the influence on the battery cell body 1 is reduced, the process can be conveniently reworked, for example, the conductive connecting pieces can be replaced, or a new conductive connecting piece can be added to connect the conductive connecting pieces of the two battery cells 10; thereby improving the assembly yield of the plurality of battery cells 10 and reducing the assembly rejection rate.

According to the battery pack 102 of the embodiment of the utility model, the battery pack 102 includes a plurality of battery cells 10, each battery cell 10 includes two conductive connecting pieces, in the process of assembling the plurality of battery cells 10 to form the battery pack 102, the plurality of battery cells 10 are placed in a battery system to be assembled to form the battery pack 102, since each battery cell 10 is provided with two conductive connecting pieces in advance, when two adjacent battery cells 10 are electrically connected, the conductive connecting pieces of the two adjacent battery cells 10 are connected, in the process of connection, for example, in the process of welding, even if the connection position or the welding position is not at the post position, the battery cell body 1 (i.e. the battery core is not affected) is not affected or the influence on the battery cell body 1 is reduced, the process of repairing can be facilitated, so that the assembly yield of the plurality of battery cells 10 is improved, and the assembly rejection rate is reduced.

According to some embodiments of the present utility model, referring to fig. 1-14, the first direction is the thickness direction of the battery cell 10, the first pole 11 and the second pole 12 are located at one end of the battery cell body 1 along the second direction (e.g. referring to the e2 direction in the drawings), and the first pole 11 and the second pole 12 are spaced along the third direction (e.g. referring to the up-down direction in the drawings), the second direction is the length direction of the battery cell 10, and the third direction is the width direction of the battery cell 10. The first conductive connecting piece 13 and the second conductive connecting piece 14 extend to the same side of the battery unit body 1 along the third direction, so that the first conductive connecting piece 13 of one battery unit body 1 can be electrically connected with the second conductive connecting piece 14 of the adjacent other battery unit body 1.

According to some alternative embodiments of the present utility model, referring to fig. 1-14, an insulating layer 21 is disposed between the first conductive connecting piece 13 and the second conductive connecting piece 14, and the insulating layer 21 may be used to avoid the conductive contact between the first conductive connecting piece 13 and the second conductive connecting piece 14, so that a short circuit of a single battery cell 10 may be avoided, and the use safety of the battery pack 102 may be ensured. For example, insulation protection of the first conductive connection piece 13 and the second conductive connection piece 14 may be achieved by adopting an insulation cover, an insulation tape, plastic dipping, and the like.

According to some alternative embodiments of the present utility model, referring to fig. 6 to 11, a groove 15 is formed on one side of the battery cell body 1 along the first direction, the groove 15 is located at one end of the battery cell body 1 along the second direction, the first pole 11 and the second pole 12 are both located in the groove 15, the first pole 11 and the second pole 12 are both located on the bottom wall 151 of the groove 15, the bottom wall 151 of the groove 15 is a wall surface of the groove 15 approximately perpendicular to the first direction, and by locating the first pole 11 and the second pole 12 on the bottom wall 151 of the groove 15, the whole battery cell 10 can be made compact in structure, and space occupied by the battery cell 10 is saved.

According to some alternative embodiments of the present utility model, referring to fig. 12-14, the first pole 11 and the second pole 12 may be disposed on the same side of the battery cell body 1 along the second direction, and the first conductive connecting piece 13 and the second conductive connecting piece 14 may extend to the same side of the battery cell body 1 along the third direction, so as to facilitate electrical connection between the two battery cells 10.

According to some alternative embodiments of the present utility model, referring to fig. 1-14, the first conductive connecting piece 13 includes a first inner transition 131 and a first outer transition 132, where the first inner transition 131 and the first outer transition 132 are disposed at an angle, for example, the angle between the first inner transition 131 and the first outer transition 132 may be 90 °. The second conductive connecting piece 14 includes a second inner switching portion 141 and a second outer switching portion 143, and the second inner switching portion 141 and the second outer switching portion 143 are disposed at an included angle, and the included angle between the second inner switching portion 141 and the second outer switching portion 143 may be 90 °.

The first inner switching part 131 is electrically connected with the first pole 11, the second inner switching part 141 is electrically connected with the second pole 12, the first outer switching part 132 and the second outer switching part 143 are both positioned on the same side of the battery cell body 1 along the third direction, and the first outer switching part 132 and the second outer switching part 143 between two adjacent battery cells 10 are electrically connected. By arranging the first external adapter portion 132 and the second external adapter portion 143 on the same side of the battery cell body 1 along the third direction, it is convenient for two adjacent battery cells 10 to be electrically connected with the second external adapter portion 143 through the first external adapter portion 132.

According to some alternative embodiments of the present utility model, referring to fig. 10 to 14, the third direction is the up-down direction, and the first external switching part 132 and the second external switching part 143 are both positioned at the upper side of the battery cell body 1, so that the electrical connection of the first external switching part 132 of one of the adjacent two battery cells 10 with the second external switching part 143 of the other of the adjacent two battery cells 10 can be facilitated. The first pole 11 is located above the second pole 12, the first inner adaptor 131 may be connected to the first pole 11, the second inner adaptor 141 may be connected to the second pole 12, and the first inner adaptor 131 may be located above the second inner adaptor 141. The second conductive connecting piece 14 further comprises a connecting portion 142, the connecting portion 142 is used for connecting the second inner connecting portion 141 and the second outer connecting portion 143, the connecting portion 142 is located on one side, far away from the battery monomer body 1, of the first inner connecting portion 131, the connecting portion 142 is arranged opposite to the first inner connecting portion 131, the insulating layer 21 is coated on the outer surface of the connecting portion 142, the insulating layer 21 can isolate the connecting portion 142 from being in conductive contact with the first inner connecting portion 131, and further the first conductive connecting piece 13 and the second conductive connecting piece 14 can be insulated, short circuits of the battery monomer 10 can be avoided, and use safety of the battery pack 102 can be guaranteed. For example, an insulating cover, an insulating tape, injection molding, or the like may be used to cover the outer surface of the connection portion 142 to form the insulating layer 21.

According to some alternative embodiments of the present utility model, referring to fig. 1 to 14, the first outer switching part 132 and the second outer switching part 143 of the same battery cell 10 are arranged at intervals in the first direction and extend in opposite directions, so that the first outer switching part 132 and the second outer switching part 143 can be prevented from being shorted, and further, the battery cell 10 can be prevented from being shorted; the first external adapter portion 132 may be conveniently connected to the second external adapter portion 143 of the adjacent another battery cell 10, or the second external adapter portion 143 may be conveniently connected to the first external adapter portion 132 of the adjacent another battery cell 10, so that the electrical connection between the one battery cell 10 and the adjacent another battery cell 10 may be realized.

According to some alternative embodiments of the present utility model, referring to fig. 1 to 14, the second external switching part 143 of one of the adjacent two battery cells 10 is located at the upper side of the first external switching part 132 of the other of the adjacent two battery cells 10 and is electrically connected, the battery cells 10 further include an insulating support 22, the insulating support 22 is disposed between the first external switching part 132 of the same battery cell 10 and the corresponding battery cell body 1, the insulating support 22 may support the first external switching part 132, and the insulating support 22 may be used for insulating protection between the first external switching part 132 and the battery cell body 1. For example, the second outer adapter 143 and the first outer adapter 132 may be electrically connected by welding, and the insulating support 22 may be used to protect the battery cell 10 from welding through the first outer adapter 132 during welding, which may cause damage to the battery cell 10. For example, the insulating support 22 may be an n-shaped support.

According to some alternative embodiments of the present utility model, referring to fig. 1 to 5, the first external transfer portion 132 of one of the adjacent two battery cells 10 is disposed to overlap the second external transfer portion 143 of the other of the adjacent two battery cells 10 in the third direction, the first external transfer portion 132 of one of the adjacent two battery cells 10 has the first surface 133, the second external transfer portion 143 of the other of the adjacent two battery cells 10 has the second surface 144, the first surface 133 is opposite to and electrically connected with the second surface 144 in the third direction, the first surface 133 is parallel to the second surface 144, and the first surface 133 of the first external transfer portion 132 may abut against the second surface 144 of the second external transfer portion 143, and the contact area of the first external transfer portion 132 and the second external transfer portion 143 is larger, so that the electrical conductivity between the adjacent two battery cells 10 is better. For example, the first surface 133 and the second surface 144 may both be parallel to a horizontal plane.

According to some alternative embodiments of the present utility model, referring to fig. 1 to 12, a temperature adjusting plate 23 is disposed between adjacent battery cells 10, the temperature adjusting plate 23 is used to adjust the temperature of the battery cells 10, and the temperature adjusting plate 23 can heat or dissipate heat from the battery cells 10. For example, the temperature adjustment plate 23 may be integrally formed with the case of the battery cell 10, and the temperature adjustment plate 23 may be integrated to one side of the battery cell 10 in the first direction. One side of the temperature adjusting plate 23 along the third direction is provided with a avoidance notch 231, and the avoidance notch 231 is used for avoiding at least one of the first conductive connecting sheet 13 and the second conductive connecting sheet 14, which may be that the avoidance notch 231 is only used for avoiding the first conductive connecting sheet 13; it may be that the relief notch 231 is only used to relief the second conductive connecting piece 14; the relief notch 231 may also be used to relief the first conductive connecting piece 13 and the second conductive connecting piece 14. By providing the escape notch 231 on one side of the temperature adjusting plate 23 in the third direction, the materials of the first conductive connecting piece 13 and the second conductive connecting piece 14 can be saved.

For example, the insulating layer 21 is disposed between the second conductive connecting piece 14 and the inner wall of the avoidance gap 231 of the temperature adjusting plate 23, and the insulating layer 21 is used for isolating the second conductive connecting piece 14 from conductive contact with the inner wall of the avoidance gap 231, so that the short circuit of the battery cell 10 can be avoided.

For example, referring to fig. 1-4, the battery pack 102 is further provided with a collecting unit 24, the collecting unit 24 may be located above the second external adapter 143, the collecting unit 24 is configured to collect the temperature and the voltage of the battery pack 102, and the collecting unit 24 may transmit the collected data to the battery management system.

The battery pack 100 according to the embodiment of the second aspect of the present utility model includes the battery pack 102 according to the embodiment of the first aspect of the present utility model described above. The battery pack 100 may include a case 103, a receiving chamber 101 may be defined in the case 103, the battery pack 102 may be disposed in the receiving chamber 101, and the case 103 may be used to protect the battery pack 102.

According to the battery pack 100 of the embodiment of the utility model, by arranging the battery pack 102, in the process of connecting two adjacent battery cells 10, for example, in the welding process, since the connection position or the welding position is not at the pole post position, even if the connection abnormality or the welding abnormality occurs, the battery cell body 1 (i.e. the battery core is not affected) is not affected, or the influence on the battery cell body 1 is reduced, the repair of the process can be facilitated, so that the assembly yield of a plurality of battery cells 10 is improved, and the assembly rejection rate is reduced.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery pack, comprising:

the battery comprises a plurality of battery monomers, wherein the battery monomers are sequentially arranged along a first direction, each battery monomer comprises a battery monomer body, a first conductive connecting sheet and a second conductive connecting sheet, the battery monomer body is provided with a first pole column and a second pole column, one of the first pole column and the second pole column is a positive pole column, the other of the first pole column and the second pole column is a negative pole column, the first conductive connecting sheet is electrically connected with the first pole column, the second conductive connecting sheet is electrically connected with the second pole column, the first conductive connecting sheet of one of two adjacent battery monomers is electrically connected with the second conductive connecting sheet of the other of the two adjacent battery monomers, and each battery monomer is an independent forming part.

2. The battery pack according to claim 1, wherein the first direction is a thickness direction of the battery cell, the first and second poles are located at one end of the battery cell body in a second direction, the first and second poles are disposed at intervals in a third direction, the second direction is a length direction of the battery cell, and the third direction is a width direction of the battery cell;

the first conductive connecting sheet and the second conductive connecting sheet extend to the same side of the battery cell body along the third direction.

3. The battery of claim 2, wherein an insulating layer is disposed between the first conductive tab and the second conductive tab; and/or, a groove is formed on one side of the battery cell body along the first direction, the groove is positioned at one end of the battery cell body along the second direction, and the first pole and the second pole are both positioned in the groove and are arranged on the bottom wall of the groove.

4. The battery pack of claim 2, wherein the first conductive connecting piece comprises a first inner switching portion and a first outer switching portion which are arranged at an included angle, the second conductive connecting piece comprises a second inner switching portion and a second outer switching portion which are arranged at an included angle, the first inner switching portion is electrically connected with the first pole, the second inner switching portion is electrically connected with the second pole, the first outer switching portion and the second outer switching portion are both positioned on the same side of the battery cell body along the third direction, and the first outer switching portion and the second outer switching portion between two adjacent battery cells are electrically connected.

5. The battery pack according to claim 4, wherein the third direction is an up-down direction, the first outer switching portion and the second outer switching portion are both located at an upper side of the battery cell body, the first electrode post is located above the second electrode post, the second conductive connecting piece further includes a connecting portion connected between the second inner switching portion and the second outer switching portion, the connecting portion is located at a side of the first inner switching portion away from the battery cell body, the connecting portion is disposed opposite to the first inner switching portion, and an insulating layer is coated on an outer surface of the connecting portion.

6. The battery of claim 4, wherein the first and second outer transitions of the same cell are spaced apart in the first direction and extend in opposite directions.

7. The battery pack according to claim 4, wherein the second outer switching portion of one of the adjacent two battery cells is located on an upper side of the first outer switching portion of the other of the adjacent two battery cells and is electrically connected, the battery cells further comprising an insulating bracket provided between the first outer switching portion of the same battery cell and the corresponding battery cell body.

8. The battery pack according to claim 4, wherein the first outer switching portion of one of the adjacent two battery cells and the second outer switching portion of the other of the adjacent two battery cells are disposed to overlap in the third direction, the first outer switching portion of one of the adjacent two battery cells has a first surface, the second outer switching portion of the other of the adjacent two battery cells has a second surface, the first surface is opposite to and electrically connected with the second surface in the third direction, and the first surface is parallel to the second surface.

9. The battery pack according to claim 2, wherein a temperature adjusting plate is arranged between adjacent battery cells, the temperature adjusting plate is used for adjusting the temperature of the battery cells, an avoidance notch is formed in one side of the temperature adjusting plate along the third direction, and the avoidance notch is used for avoiding at least one of the first conductive connecting sheet and the second conductive connecting sheet.

10. A battery pack, comprising: the battery pack according to any one of claims 1-9.

Images