CN212323157U

CN212323157U - Battery module and battery pack

Info

Publication number: CN212323157U
Application number: CN202020702979.8U
Authority: CN
Inventors: 席兵荣; 李笑笑; 王明旺; 王华文
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-01-08
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to a battery module, including a plurality of electric cores, electric core arranges along self thickness direction and constitutes electric core group, electric core includes first utmost point post and second utmost point post, and is a plurality of electric core first utmost point post is arranged along the straight line, constitutes first utmost point post row, electric core second utmost point post is arranged along the straight line, constitutes second utmost point post row, electric core first utmost point post through first busbar with adjacent electric core second utmost point post electricity is connected. This disclosed technical scheme can disperse along the ascending atress of module transverse direction on the first busbar, and then improves the atress ability of first busbar, ensures that first busbar is difficult to break when receiving along the ascending impact of battery module transverse direction, has improved the stability and the security of battery module.

Description

Battery module and battery pack

Technical Field

The disclosure relates to the field of power battery manufacturing, in particular to a battery module and a battery pack.

Background

Including a plurality of battery module in the battery package among the power battery usually, every battery module is inside to be provided with the electric core group of constituteing by a plurality of electric cores, or the electric core group of directly placing by a plurality of electric cores in the battery phase, the electric core of current electric core group is connected and is mostly direct-connected, curb plate and busbar are limited at electric core group width direction's ascending rigidity, the busbar has taken place to break when receiving electric core group width direction's impact force, lead to the stability and the security decline of whole battery module.

SUMMERY OF THE UTILITY MODEL

The purpose of the present disclosure is to provide a battery module and a battery pack, which can effectively enhance the rigidity of a bus bar in the transverse direction of the module, improve the stress capability of the bus bar, and further improve the stability and safety of the battery module.

In order to realize the above object, the first aspect of the present disclosure discloses a battery module, including a plurality of electric cores, electric core group is arranged along self thickness direction to constituteing to the electric core, electric core includes first utmost point post and second utmost point post, and is a plurality of electric core first utmost point post is arranged along the straight line, constitutes first utmost point post row, electric core second utmost point post is arranged along the straight line, constitutes second utmost point post row, electric core first utmost point post through first busbar with adjacent electric core second utmost point post electricity is connected.

Optionally, the first pole column array is composed of an arrangement of positive poles of the battery cells, and the second pole column array is composed of an arrangement of negative poles of the battery cells.

Optionally, the first pole column array is composed of a negative pole column array of the battery cell, and the second pole column array is composed of a positive pole column array of the battery cell.

Optionally, the battery module includes an output electrode connecting piece, one end of the output electrode connecting piece is connected with the first pole column or the second pole column of the battery core at either end of the battery core group, and the other end of the output electrode connecting piece is connected with an external circuit system of the battery core group.

Optionally, the output electrode connection pad is parallel to the first busbar.

Optionally, the battery module comprises at least one electric core group.

Optionally, adjacent electric core groups are communicated through a second bus bar.

The second aspect of the present disclosure provides a battery pack including the battery module provided in the first aspect of the present disclosure.

Through above-mentioned technical scheme, can disperse the atress along the module horizontal direction on the first busbar, and then improve the atress ability of first busbar, ensure that first busbar is difficult to break when receiving along the ascending impact of battery module horizontal direction, improved battery module's stability and security.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic diagram of a battery module cell connection face.

Description of the reference numerals

1 electric core 2 first pole column

21 first pole 3 second pole column

31 second pole 4 first busbar

5 electric core group 6 second bus bar

7 output pole connecting piece

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional terms such as "upper, lower, left, right" generally means "above", "below", "left", "right" based on a particular component referred to in the drawings, unless otherwise specified. "inner and outer" refer to "inner" and "outer" based on the particular components referred to in the drawings. "distal and proximal" refer to the distance from a particular element in the drawings.

As shown in fig. 1, the present disclosure provides a battery module, including a plurality of electric cores 1, be provided with a first utmost point post 21, a second utmost point post 31 post and explosion-proof valve on the electric core 1 top cap, a plurality of electric cores 1 arrange along self thickness direction, and the first utmost point post 21 and the second utmost point post 31 of a plurality of electric cores all follow linear arrangement, constitute first utmost point post row 2 and second utmost point post row 3. The first pole 21 of any cell 1 is electrically connected with the second pole 31 of the adjacent cell 1 through the first busbar 4, that is, the plurality of cells 1 are electrically connected through the plurality of first busbars 4 to form the cell group 5.

In the practical application process, the connection mode between the battery cell 1 and the adjacent battery cell 1 can be a series connection mode or a parallel connection mode. When the series connection mode is used, the

electric cores

1 and 1 need to be electrically connected to different poles, in this embodiment, as shown in fig. 1, the first pole 21 and the second pole 31 of the adjacent electric cores 1 are set as poles with the same polarity, that is, the first pole 21 of the electric core set 5 is a positive pole, the second pole 31 of the electric core set 5 is a negative pole or the first pole 21 of the electric core set 5 is a negative pole, and the second pole 31 of the electric core set 5 is a positive pole. When the first busbar 4 is used for connecting adjacent cells, one end of the first busbar 4 is connected with the first pole 21 of any cell, and the other end of the first busbar is connected with the second pole 31 of the adjacent cell 1, so that the poles with opposite polarities of the adjacent cells 1 can be electrically connected.

Since the first terminal post 21 and the second terminal post 31 in the present embodiment are respectively located at two sides of the width direction of the battery cell 1, the first bus bar 4 connects the adjacent battery cells 1 along the diagonal direction of the adjacent battery cells. Under the general condition, battery module 1 can take place the inflation at the course of the work in electric core, produces the expansive force along 1 thickness direction of electric core, when battery module takes place to vibrate simultaneously, can produce along the ascending vibratory force of battery module width direction. Both can be used in first busbar 4, and first busbar 4 sets up along the diagonal direction of adjacent electric core, can effectively disperse electric core bulging force and external vibration power, reduces first busbar 4 and is broken by the risk, improves the stability and the security of battery module.

Every battery module is provided with an electric core group 5 at least, and when setting up a plurality of electric core groups 5, a plurality of electric core groups 5 are connected through 6 electricity of second busbar, constitute module power supply unit, provide the electric energy. The battery module is also provided with an output electrode connecting sheet 8 for realizing the connection between the battery module and an external circuit system; output pole connection piece 8 one end is connected with the first utmost point post 21 or the second utmost point post 31 of the electric core 1 that is close to the module output pole position in the electric core group 5, and the other end and the outside forceful electric power system of battery module are connected, and output pole connection piece 8 one end is connected the positive post or the negative pole post of electric core 1 promptly, and the outside circuit system of battery module is connected to the other end. Output pole connection piece 8 sets up to be parallel with first busbar 4, improves output pole connection piece 8's stability, reduces the cracked risk of output pole connection piece 8.

The present disclosure also provides a battery pack including the battery module provided in the first aspect of the present disclosure.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure. It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The utility model provides a battery module, includes a plurality of electric cores, its characterized in that, the electric core is arranged along self thickness direction and is constituteed the electric core group, the electric core includes first utmost point post and second utmost point post, and is a plurality of the electric core first utmost point post is arranged along the straight line, constitutes first utmost point post row, the electric core second utmost point post is arranged along the straight line, constitutes second utmost point post row, the electric core first utmost point post through first busbar with adjacent the electric core second utmost point post electricity is connected.

2. The battery module of claim 1, wherein the first column of poles is comprised of an arrangement of positive poles of the cells and the second column of poles is comprised of an arrangement of negative poles of the cells.

3. The battery module of claim 1, wherein the first column of poles is comprised of an arrangement of negative poles of the cells, and the second column of poles is comprised of an arrangement of positive poles of the cells.

4. The battery module according to claim 1, wherein the battery module comprises an output electrode connecting sheet, one end of the output electrode connecting sheet is connected with the first pole column or the second pole column of any one of the electric cores at two ends of the electric core group, and the other end of the output electrode connecting sheet is connected with an external circuit system of the electric core group.

5. The battery module according to claim 4, wherein the output electrode tab is parallel to the first bus bar.

6. The battery module according to claim 1, wherein the battery module comprises at least one of the electric core groups.

7. The battery module according to claim 6, wherein the adjacent electric core groups are communicated by a second bus bar.

8. A battery pack comprising the battery module according to any one of claims 1 to 7.