CN219696654U

CN219696654U - Parallel support for soft package battery

Info

Publication number: CN219696654U
Application number: CN202223559237.2U
Authority: CN
Inventors: 李�柱; 娄隆圣; 郑举东; 杨尚勇
Original assignee: Fujian Super Power New Energy Co ltd
Current assignee: Fujian Super Power New Energy Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-09-15
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a parallel soft-package battery bracket, which belongs to the technical field of soft-package batteries and comprises a shell, and electric cores and current collectors arranged in the shell, wherein one current collector is arranged between two adjacent electric cores and is connected with the current collectors.

Description

Parallel support for soft package battery

Technical Field

The utility model relates to the technical field of soft package batteries, in particular to a soft package battery parallel support.

Background

Because of the limited capacity of the single battery, the capacity meeting the use requirement and the larger discharge current are generally obtained in a mode of connecting a plurality of batteries in parallel. The flexible package battery tab is large and thin, is not suitable for adopting a direct parallel connection mode or a PCB (printed circuit board) parallel connection mode of the positive electrode tab and the negative electrode tab, and is usually formed by bending a plurality of flexible package battery tabs and then welding the flexible package battery tabs on a busbar for parallel connection, however, the number of the flexible package batteries connected in parallel in the mode is very limited, and the bending and welding of the tabs can also cause the problems of high operation difficulty, poor welding effect, increased resistance and the like.

Disclosure of Invention

In order to overcome the defects in the prior art, the technical problem to be solved by the utility model is to provide the soft package battery parallel support which is convenient to operate and good in welding effect.

In order to solve the technical problems, the utility model adopts the following technical scheme: the soft package battery parallel support comprises a shell, and battery cores and a converging body which are arranged in the shell, wherein one converging body is arranged between two adjacent battery cores and connected with the converging body.

The bus body comprises a bus bracket, and a positive electrode post and a negative electrode post which are connected with the bus bracket; the positive electrode tab of the battery core is connected with the negative electrode post, and the negative electrode tab of the battery core is connected with the positive electrode post.

Wherein the positive pole is an aluminum pole; the negative pole is an aluminum copper pole.

Wherein the cross sections of the positive electrode post and the negative electrode post are C-shaped; the support that converges includes support shell and second fixed ear, and both ends and intermediate position that support shell and utmost point ear homonymy are located to the second fixed ear, are equipped with boss and recess on the second fixed ear.

Wherein, the soft package battery parallel connection bracket also comprises a module bracket; the two ends and the middle position of the module support are provided with a boss and a groove; fixing holes are formed in the two ends and the middle of the same side of the shell and the lug; the module support is clamped with the shell.

The soft package battery parallel support further comprises an insulating film, and the insulating film is arranged between the battery core components; an insulating film is arranged between the battery cell component and the shell.

The utility model has the beneficial effects that: the battery cell is connected with the bus body, the battery cell tab does not need to be bent, the contact surface is large and smooth, the welding is convenient, the welding effect is good, and meanwhile, the support structure is convenient to splice, and the parallel number of the batteries can be randomly adjusted according to the use requirement.

Drawings

Fig. 1 is a schematic structural view of a parallel bracket for soft package batteries according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a structure of a two-bus splice according to an embodiment of the present utility model;

FIG. 3 is a front view of a splice of two bus bars according to an embodiment of the present utility model;

FIG. 4 is an exploded view of a sink according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing a structure of a module bracket and a lower housing spliced according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a module support and bottom of a lower housing according to an embodiment of the present utility model;

description of the reference numerals: 1. a housing; 2. a battery cell; 3. collecting fluid; 4. a confluence bracket; 5. a positive electrode post; 6. a negative electrode post; 7. a module support; 8. a second fixed ear; 9. an insulating film.

Detailed Description

In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

The most critical concept of the utility model is as follows: through setting up the collection body and be connected with the collection body between two electric cores, electric core tab need not buckle and welding effect is good.

Referring to fig. 1 to 6, the parallel support for soft package batteries of the present utility model includes a housing, and a battery cell and a current collector disposed in the housing, wherein two adjacent battery cells are welded on two sides of the current collector respectively, and the battery cell is connected with the current collector.

From the above description, the beneficial effects of the utility model are as follows: through set up electric core and collection body in the shell, intensity is higher, area of contact is bigger, and electric core and collection body coupling need not to buckle and the contact surface is big and level, and the welding is convenient, and the welding is effectual.

Further, the bus body comprises a bus bracket, and a positive electrode post and a negative electrode post which are connected with the bus bracket; the positive electrode tab and the negative electrode tab of the battery cell are positioned on the same side; the positive electrode tab of the battery core is connected with the negative electrode post, and the negative electrode tab of the battery core is connected with the positive electrode post.

As can be seen from the description, compared with the traditional soft-package battery cell lugs which are directly welded in parallel, the bus bracket has higher strength and larger area, and the bus bracket is simpler to connect and operate and is convenient to further group.

Further, the positive electrode post is an aluminum electrode post; the negative pole is an aluminum copper pole.

From the above description, it is known that the aluminum film having a high positive electrode potential and a high thickness can effectively prevent oxidation of the current collector.

Further, the confluence bracket comprises a bracket body, a connecting plate and second fixing lugs, wherein the connecting plate and the second fixing lugs are arranged on the bracket body, the connecting plate is arranged between two adjacent second fixing lugs, the connecting plate and the lugs of the battery cell are arranged on the same side of the bracket body, and the second fixing lugs are provided with bosses and grooves;

the cross sections of the positive electrode post and the negative electrode post are C-shaped; the positive pole post and the negative pole post are respectively clamped with a connecting plate.

Preferably, the number of the connecting plates is two, the number of the second fixing lugs is three, and the three second fixing lugs are arranged at the middle position and the two ends of the bracket body.

From the above description, the cross sections of the positive electrode post and the negative electrode post are provided with specific structures, so that the positive electrode post and the negative electrode post are conveniently matched and fixed with the connecting plate, and the C-shaped hollowed-out part of the positive electrode post and the negative electrode post is just clamped and fixed with the connecting plate to form a stable connecting structure. The second fixed lug on the confluence support is provided with a boss and a groove, so that the structure of the inside of the module (between the confluence supports) and the structure of the module (between the confluence supports and the shell) can be spliced, the parallel quantity of the batteries can be regulated according to the use requirement, and the operation is simple.

Further, the soft package battery parallel connection bracket also comprises a module bracket; the module support is provided with a third fixed lug, and the third fixed lug is provided with a boss and a groove. The third fixed ear is matched with the boss and the groove on the second fixed ear. Preferably, the number of the third fixing lugs is three, and the three third fixing lugs are arranged at two ends and the middle position of the module bracket.

Further, the shell comprises an upper shell and a lower shell; be equipped with first fixed ear on the casing, the quantity of first fixed ear is three, and three first fixed ear sets up in the both ends and the intermediate position of casing one side, and first fixed ear is located the homonymy with the utmost point ear of electric core.

Further, the first fixing lug, the second fixing lug and the third fixing lug are all provided with fixing holes.

From the above description, the fixing holes are arranged to combine the bosses and the grooves on the first fixing lug, the second fixing lug and the third fixing lug, so that the fixing positions are fixed, the structure splicing between the confluence brackets and the shell is convenient, the parallel quantity of the batteries can be regulated according to the use requirement, and the operation is simple.

Further, the parallel support of the soft-packaged battery also comprises an insulating film, and the insulating film is arranged between the battery core components; an insulating film is arranged between the battery cell component and the shell.

As can be seen from the above description, the insulating film is arranged between the cell assemblies, since the PVC of the cell itself cannot bear too much heat, if the battery pack generates too much overcurrent, it is easy to cause the short circuit of the positive and negative electrodes, and by adding the insulating film, the insulating film itself can resist high temperature, so as to protect the PVC battery pack of the cell itself from short circuit; an insulating film is arranged between the battery cell assembly and the shell to prevent friction of the battery pack in the vibration process, so that PVC of the battery cell is damaged, and short circuit is caused.

The parallel support for the soft-package batteries can be suitable for a scene that the soft-package batteries are connected in parallel without bending tabs, and the following description is given by a specific implementation mode:

referring to fig. 1 to 6, a first embodiment of the present utility model is as follows:

the soft package battery parallel support takes three soft package battery parallel supports as an example, and comprises an insulating film 9, a shell 1, a module support 7, three battery cores 2 arranged in the shell 1 and two bus bodies 3;

the shell 1 comprises an upper shell and a lower shell, three first fixing lugs are arranged on the shell, the three first fixing lugs are arranged at two ends and the middle position of one side of the shell, and the first fixing lugs and the lugs of the battery cell are positioned at the same side;

three third fixing lugs are arranged on the module support 7, and each third fixing lug is provided with a boss and a groove; an insulating film 9 is arranged between the cell 2 components, and an insulating film 9 is arranged between the cell 2 components and the shell;

a current collector 3 is arranged between two adjacent battery cores 2 and is connected with the current collector 3; the current collecting body 3 comprises a current collecting support 4, and a positive electrode post 5 and a negative electrode post 6 which are connected with the current collecting support 4, the current collecting support 4 comprises a support body, a connecting plate and second fixing lugs 8, wherein the connecting plate and the second fixing lugs 8 are arranged on the support body, 2 connecting plates are respectively arranged between two adjacent second fixing lugs 8, the cross sections of the positive electrode post 5 and the negative electrode post 6 are all C-shaped, the C-shaped hollow parts are exactly clamped with the connecting plate to form a stable connecting structure, the number of the second fixing lugs 8 is three, the three second fixing lugs 8 are arranged at the middle position and the two ends of the support body, and bosses and grooves matched with the third fixing lugs are arranged on the second fixing lugs 8; the positive electrode tab of the battery cell 2 is connected with the negative electrode post 5, and the negative electrode tab of the battery cell 2 is connected with the positive electrode post 6, wherein the positive electrode post 5 is an aluminum electrode post; the cathode pole 6 is an aluminum copper pole; the first fixing lug, the second fixing lug 8 and the third fixing lug are all provided with fixing holes.

The working principle of the utility model is as follows: the opening of the hollowed-out part of the positive electrode pole 5 and the negative electrode pole 6C is fixed towards the confluence support 4 in a clamping way, the whole plastic injection molding part is used for carrying out structure splicing inside a module by aligning a boss and a groove on a second fixing lug 8 between identical confluence bodies 3, meanwhile, the positive electrode lug of the battery core 2 is connected with the negative electrode pole 5, the negative electrode lug of the battery core 2 is connected with the positive electrode pole 6, finally, a fixing hole on the shell 1 is aligned to fix the module support 7 with the shell 1, the boss and the groove of the module support 7 and the confluence support 4 are aligned to complete structure splicing between modules, and therefore, the splicing inside a soft package battery and the parallel splicing of three soft package battery supports are completed.

In summary, the parallel support for the soft-packaged battery has the advantages that the contact surface of the battery core and the bus body is large and smooth, the welding is convenient, the welding effect is good, and the electrode lugs of the battery core do not need to be bent; the shell and the bus body are provided with the positioning boss and the groove, so that the structure inside the module and between the modules can be spliced conveniently, the parallel quantity of the batteries can be regulated according to the use requirement, and the operation is simple; compared with the prior soft-package battery cell lugs which are directly welded in parallel, the utility model adopts the bus bracket which has higher strength, larger area, simpler operation and convenient further grouping.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.

Claims

1. The soft package battery parallel support is characterized by comprising a shell, and electric cores and current collecting bodies which are arranged in the shell, wherein one current collecting body is arranged between two adjacent electric cores and is connected with the current collecting bodies.

2. The parallel bracket of soft pack batteries according to claim 1, wherein the bus body comprises a bus bracket and a positive electrode post and a negative electrode post connected with the bus bracket; the positive electrode tab and the negative electrode tab of the battery core are connected, and the negative electrode tab and the positive electrode tab of the battery core are connected.

3. The parallel bracket of soft pack batteries according to claim 2, wherein the positive electrode post is an aluminum electrode post; the negative electrode post is an aluminum-copper electrode post.

4. The parallel bracket of soft pack batteries according to claim 2, wherein the cross sections of the positive and negative electrode posts are C-shaped;

the converging support comprises a support body, a connecting plate and second fixing lugs, wherein the connecting plate and the second fixing lugs are arranged on the support body, the connecting plate is arranged between the second fixing lugs of two adjacent connecting plates, and a boss and a groove are arranged on the second fixing lugs.

5. The parallel bracket of claim 1, wherein the housing comprises an upper shell and a lower shell, and a first fixing lug is arranged on the shell.

6. The parallel bracket for soft pack batteries of claim 5, further comprising a module bracket; the module support is provided with a third fixing lug, and the third fixing lug is provided with a boss and a groove; the third fixing lug is matched with the boss and the groove on the second fixing lug.

7. The parallel bracket of soft package batteries of claim 6, wherein the first, second and third fixing lugs are provided with fixing holes; the first fixed lug, the second fixed lug and the third fixed lug are all arranged at the same side position with the lug of the battery cell.

8. The parallel bracket of soft package batteries of claim 1, further comprising an insulating film, wherein the insulating film is arranged between the cell assemblies; an insulating film is arranged between the battery cell component and the shell.