CN211828986U

CN211828986U - Battery box

Info

Publication number: CN211828986U
Application number: CN202020590700.1U
Authority: CN
Inventors: 陈亚东; 李俊斌; 彭义; 易志威; 吴志林; 刘星文; 张允�
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Precision Mold Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Precision Mold Co Ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-10-30
Anticipated expiration: 2030-04-20

Abstract

The utility model provides a battery box, it includes a plurality of boxes that pile up, is provided with a plurality of battery module by electrically conductive row series connection in every box, and positive/negative pole connector sets up respectively on the battery module in the box of top layer and the battery module in the box of bottom, and the battery module in two adjacent boxes is connected through the connecting row and is formed the series connection so that the battery module in the whole battery box constitutes current loop. Compared with the prior art, the utility model provides a battery box can cooperate with upper and lower connector, solves the problem that current battery box can not satisfy the scheme of connector about customer's requirement uses. The conductive bar is designed to be of an axial structure, and the conductive bars of the upper box body and the lower box body are arranged in the same mode, so that the assembly process is simplified, and the weight of the conductive bar is reduced by sharing the conductive bar; the connecting row is arranged in the electrical box, so that the connecting row does not need to be additionally provided with an additional protection structure, and the stability and the reliability of the dustproof and waterproof performance of the whole battery box are improved.

Description

Battery box

Technical Field

The utility model relates to a power battery wraps technical field, especially relates to a battery box.

Background

The power battery pack is an energy storage device of the new energy electric vehicle, comprises a single electric core and a module, and certainly also comprises other electronic components, a detection protection device, some external systems and the like. The single battery cell is the minimum unit for forming the power battery, and the single battery cell forms a module in the power battery pack through the serial connection and the parallel connection of the batteries on a physical structure. The electric core is connected with the electric core, the module and the module in series-parallel connection through a bus bar, and the bus bar can be divided into an aluminum bar or a copper bar according to the material. The current mainstream conductive bar arrangement in the market is basically based on a left-right terminal plug-in unit, and the arrangement mode cannot meet the scheme that a customer requires to use an upper plug-in unit and a lower plug-in unit.

SUMMERY OF THE UTILITY MODEL

To the not enough among the above-mentioned prior art, the utility model aims to provide a battery box, battery box can cooperate with upper and lower connector.

The utility model provides a pair of battery box, including a plurality of boxes that pile up, every be provided with a plurality of battery modules in the box, battery module is parallelly connected by a plurality of electric cores and forms, and is a plurality of form the series connection through leading the electrical drainage between the battery module, the top layer be equipped with one among anodal connector or the negative pole connector on the battery module that is close to the outside in the box, the bottom be equipped with another among anodal connector or the negative pole connector on the battery module that is close to the outside in the box, adjacent two connect through the bank of connections and form the series connection between the battery module that is close to the outside in the box, so that whole in the battery box the battery module constitutes current loop.

Preferably, the positive connector and the negative connector are arranged on the battery module on the same side of the battery box.

Preferably, the connection bar, the positive connector and the negative connector are all arranged on the battery module located on the same side of the battery box.

Preferably, the positive connector and the negative connector are disposed on the battery module located on the same side of the connection row.

Preferably, a plurality of the battery cores are connected in parallel through welding to form a battery module.

Preferably, a collection point is arranged on one side of the conductive bar close to the middle of the battery module.

Preferably, the conductive bars arranged on the battery modules corresponding to the positions in the box bodies have the same structure and the same arrangement mode.

Preferably, the conductive bar is an axisymmetric structure symmetrical along a central axis thereof.

Preferably, an electrical box is disposed at a side of the case, and the connection bar and the BMS module are disposed in the electrical box.

Compared with the prior art, the utility model provides a battery box is through setting up a plurality of boxes that pile up to set up positive connector and negative pole connector respectively on the battery module in the top layer box and the battery module in the bottom box, the battery module in two adjacent boxes is connected through the connecting row and is formed the series connection, makes the battery box can cooperate with upper and lower connector, solves the problem that current battery box can not satisfy the scheme that the customer required to use upper and lower connector. The positive connector and the negative connector are arranged on the same side of the battery box, so that the battery box is convenient to be connected with the outside; the conductive bars are arranged in an axisymmetric structure, and the conductive bars arranged on the battery modules corresponding to the positions in the upper box body and the lower box body are identical in structure and arrangement mode, so that the assembly process is simplified, and the weight and the types of the conductive bars are reduced by sharing the conductive bars; the collecting points are arranged on one side, close to the middle part of the battery module, of the conductive bar, so that the data collected by the whole box is more accurate, and meanwhile, the collecting plate is more convenient to mount; through directly setting up the run-on board in the electrical apparatus box for the run-on board need not increase extra protective structure, effectively reduces extra protective structure and sealed point, improves stability, the reliability of whole case dustproof and waterproof performance of battery box, has reduced the kind of material, thereby has simplified the structure of box.

The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.

Drawings

The invention will be described in more detail hereinafter on the basis of non-limiting examples only and with reference to the accompanying drawings. Wherein:

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

fig. 2 is a schematic view illustrating arrangement of battery modules and conductive bars in a battery box according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating arrangement of battery modules and conductive bars in a battery box at another viewing angle according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a conducting bar and a collecting plate according to an embodiment of the present invention;

fig. 5 is a schematic diagram of the arrangement of the conductive bars and the current flow direction of the upper box according to an embodiment of the present invention;

fig. 6 is a schematic view of the arrangement of the conducting bars and the current flowing direction of the upper box according to another embodiment of the present invention.

Description of reference numerals:

1. collecting a plate; 2. an electric core; 3. a conductive bar; 4. a negative connector; 5. a positive connector; 6. a battery module; 7. an upper box body; 8. a connecting row; 9, discharging the box body; 10. a BMS module; 11. an electrical box; 12. and (4) collecting points.

Detailed Description

For making the purpose, technical solution and advantages of the present invention clearer, it will be right below that the technical solution of the present invention is clearly and completely described, based on the specific embodiments of the present invention, all other embodiments obtained by the ordinary skilled person in the art without creative work belong to the scope protected by the present invention.

As shown in fig. 1 to 3, the battery case provided in the present embodiment includes an upper case 7 and a lower case 9 stacked one on another. Go up and be provided with a plurality of battery module 6 in box 7 and the lower box 9 respectively, every battery module 6 is parallelly connected to constitute through the welding by a plurality of electric cores 2. The battery modules 6 are connected in series with the battery modules 6 through the conductive bars 3. The negative connector 4 is arranged on the battery module 6 close to the outer side in the upper box 7, the positive connector 5 is arranged on the battery module 6 close to the outer side in the lower box 9, and the battery module 6 close to the outer side in the upper box 7 and the battery module 6 close to the outer side in the lower box 9 are connected in series through the connecting bar 8 so that all the battery modules 6 in the whole battery box are connected in series to form a current loop. In order to facilitate the connection of the battery box with the outside, the positive connector 5 and the negative connector 4 are arranged on the battery module 6 positioned on the same side of the battery box; preferably, the positive connector 5, the negative connector 4 and the connecting bar 8 are all arranged on the battery module 6 positioned on the same side of the battery box; more preferably, the positive connector 5 and the negative connector 4 are provided on the battery module 6 on the same side of the connection row 8. The conductive bar 3 and the connecting bar 8 are preferably aluminium bars.

As shown in fig. 1, an electrical box 11 is further disposed on a side surface of the box body, so that the connection bar 8 and the BMS module 10 are both disposed in the electrical box 11 on the premise that the installation of a BATTERY management system (BATTERY MANAGEMENT SYSTEM, BMS) module (hereinafter referred to as BMS module) is not affected in a limited space. The connecting row 8 directly sets up in electrical apparatus box 11 for the connecting row 8 need not increase extra protective structure, effectively reduces extra protective structure and sealed point, improves whole case of battery box stability, reliability of waterproof performance. In addition, because the connecting row 8 does not need to increase extra protective structures, the types of materials are reduced, thereby simplifying the structure of the box body and realizing multiple states.

As shown in fig. 4, the conductive bar 3 is provided in an axisymmetric structure symmetrical along its central axis, and the weight of the conductive bar 3 is reduced by sharing the conductive bar 3, the kind of the conductive bar 3 required is reduced, and the assembly process is simplified.

The conductive bars arranged on the battery modules corresponding to the positions in the upper box body 7 and the lower box body 9 have the same structure and the same arrangement mode, so that the types of the required conductive bars 3 are few, and the assembly process is simplified.

As shown in fig. 4, one side of the conductive bar 3 close to the middle of the battery module 6 is provided with a collection point 12, and the battery box is provided with a collection plate 1 corresponding to the collection point 12, because the collection point 12 is uniformly arranged on the same side of the conductive bar 3, the data collection of the whole box is more accurate, and meanwhile, the collection plate 1 is more convenient to install. The acquisition board 1 is preferably a PCB board.

The arrangement schemes of the battery modules 6 and the conducting bars 3 in the battery box are various, generally, when the positive connector 5 and the negative connector 4 are ensured to be on the same side of the battery box, the position of the connecting bar 8 can also be changed, and the following description is given by taking 4 battery cores 2 connected in parallel to form the battery modules 6, and taking 24 battery modules 6 connected in series to form the battery box as an example.

Fig. 5 is a schematic diagram of the arrangement and current flow of the conductive bar 3 of the upper case 7. As shown in fig. 5, the arrows indicate the direction of current flow, and 12 battery modules 6 are arranged in 4 rows and 3 columns, with the positive and negative poles of the modules in the same row facing the same direction, and the positive and negative poles of the modules in adjacent rows facing the opposite direction. In the arrangement of the conductive bars 3 as shown in fig. 5, the connection bar 8 is disposed on the battery modules 6 in the 3 rd row and the 3 rd column, the battery modules 6 in the 3 rd row and the 3 rd column are sequentially connected in series with the battery modules 6 in the 2 nd row and the 3 rd column, the 1 st row and the 2 nd column, the 1 st row and the 1 rd column, the 2 nd row and the 2 nd column, the 3 rd row and the 1 st column, the 4 th row and the 2 nd column and the 3 rd column through the conductive bars, and the negative connectors 4 are disposed on the battery modules 6 in the 4 th row and the 3 rd column, so that the connection bar 8 is close to the positive/negative connectors.

Fig. 6 is a schematic diagram of the arrangement and current flow of the conductive bar 3 of the upper case 7 in another embodiment. As shown in fig. 6, the arrangement of the battery modules 6 in the upper case 7 is the same as that in fig. 5, but the arrangement of the conductive bars 3 is different from that in fig. 5, in the arrangement scheme of the conductive bars 3 shown in fig. 6, the connection bar 8 is arranged on the battery modules 6 in the 1 st row and the 3 rd column, the battery modules 6 in the 1 st row and the 3 rd column are sequentially connected in series with the battery modules 6 in the 2 nd row and the 3 rd column, the 3 rd row and the 3 rd column, the 2 nd row and the 2 nd column, the 1 st row and the 1 st column, the 2 nd column, the 3 rd row and the 4 th row and the 1 st column through the conductive bars, and the negative connectors 4 are arranged on the battery modules 6 in the 4 th row and the 3 rd column, so that the connection bar 8 is far away from the positive/negative connectors.

Finally, it should be noted that: the above embodiments and examples are only used to illustrate the technical solution of the present invention, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments and examples, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments or examples may still be modified, or some of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments or examples of the present invention.

Claims

1. The utility model provides a battery box, its characterized in that includes a plurality of boxes that pile up, every be provided with a plurality of battery modules in the box, battery module is parallelly connected by a plurality of electric cores and forms, and is a plurality of form the series connection through leading the busbar between the battery module, the top layer be equipped with one in anodal connector or the negative pole connector on the battery module that is close to the outside in the box, the bottom be equipped with another in anodal connector or the negative pole connector on the battery module that is close to the outside in the box, adjacent two connect through connecting the row and form the series connection between the battery module that is close to the outside in the box, so that whole in the battery box battery module constitutes current loop.

2. The battery box according to claim 1, wherein the positive connector and the negative connector are provided on the battery modules located on the same side of the battery box.

3. The battery box according to claim 1, wherein the connecting row, the positive connector and the negative connector are disposed on the battery modules located on the same side of the battery box.

4. A battery box according to claim 3, wherein said positive connector and said negative connector are provided on said battery modules on the same side of said connecting row.

5. The battery box according to any one of claims 1-4, characterized in that a plurality of the battery cells are connected in parallel by welding to form a battery module.

6. The battery box according to any one of claims 1-4, characterized in that a collection point is arranged on one side of the conductive bar close to the middle of the battery module.

7. The battery box according to any one of claims 1 to 4, wherein the conductive bars arranged on the battery modules corresponding to the inner positions of each box body are identical in structure and arrangement.

8. A battery box according to any of claims 1-4, characterized in that the conductive bars are axisymmetric structures symmetrical along their central axis.

9. The battery box according to any one of claims 1 to 4, wherein an electrical box is provided at a side of the box body, and the connection bank and the BMS module are provided in the electrical box.