CN219591600U

CN219591600U - Battery busbar and battery module

Info

Publication number: CN219591600U
Application number: CN202320318343.7U
Authority: CN
Inventors: 余青松
Original assignee: Cornex New Energy Co ltd
Current assignee: Cornex New Energy Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-08-25
Anticipated expiration: 2033-02-27

Abstract

The utility model provides a battery busbar and a battery module, comprising a fixed plate and a connecting plate, wherein the fixed plate is respectively arranged at two ends of the connecting plate; the connecting plate is of a wavy structure, and is provided with at least one wave crest and at least one wave trough, and the wave crest is flush with one surface of the fixing plate. Above-mentioned structure, through setting up the connecting plate into wave-like structure, and the one side parallel and level of crest and fixed plate, so when the installation, can be with the one side orientation of crest and fixed plate parallel and level keep away from the direction of battery, after welding this busbar and battery, the battery module that forms can have a smooth surface, conveniently laminate insulating PC piece, can improve battery module's insulation protection effect.

Description

Battery busbar and battery module

Technical Field

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

Background

In the battery module, a bus bar is required to be provided for connecting the poles of the batteries to bus the batteries. The busbar is welded on the post of battery, in order to adapt to the expansion that the battery produced at the during operation, need set up the camber on the busbar to when the battery expands, the busbar can stretch, in order to avoid causing the solder joint inefficacy of busbar and battery post. After the welding of the bus bar on the battery is completed, an insulating PC sheet is also required to be arranged for insulation protection.

The present patent issued with publication number CN210897454U discloses a bus bar and a battery having the same, the bus bar comprising: the connecting component comprises a plurality of connecting sheets which are sequentially overlapped in the up-down direction, a first fixing hole and a second fixing hole are respectively arranged at two ends of the connecting component, and the first fixing hole and the second fixing hole respectively penetrate through the connecting sheets; the first fixing piece is connected to the first fixing hole, and the second fixing piece is connected to the second fixing hole.

The busbar among the above-mentioned technical scheme, it mainly comprises connecting piece, first stationary blade and second stationary blade, and first stationary blade and second stationary blade are outstanding to set up on connecting piece, and it makes after welding the busbar on the battery, and the battery module top surface that forms is not enough level and smooth, can influence the installation of insulating PC piece, leads to insulating PC piece and battery module's laminating intensity lower.

Disclosure of Invention

In view of this, the utility model provides a battery busbar and a battery module, wherein the battery busbar has a flat upper surface, can be well attached to an insulating PC sheet, and can effectively improve the insulating protection effect of the battery module.

The technical scheme of the utility model is realized as follows:

in one aspect, the utility model provides a battery buss bar comprising a fixing plate and a connecting plate, wherein,

the fixing plates are respectively arranged at two ends of the connecting plate;

the connecting plate is of a wavy structure and is provided with at least one wave crest and at least one wave trough, and the wave crest is flush with one surface of the fixing plate.

On the basis of the above technical solution, it is preferable that the connection plate has at least one peak and at least two valleys.

On the basis of the above technical proposal, the protruding height of the trough is preferably 1.5mm.

On the basis of the technical scheme, the fixing plate and the connecting plate are preferably made of aluminum materials.

On the basis of the technical scheme, the fixing plate and the connecting plate are preferably integrally formed in a stamping mode.

On the basis of the technical scheme, the thickness of the fixing plate and the connecting plate is preferably 1.5mm.

In another aspect, the present utility model provides a battery module, including the above battery busbar.

On the basis of the technical proposal, the battery also comprises a battery, wherein the battery comprises a battery body and a pole, the pole is arranged on the battery body, and the battery comprises a battery body and a battery body, wherein,

the batteries are arranged in parallel;

the battery busbar is connected with the poles of two adjacent batteries through two fixed plates, the connecting plate is located between the poles of two batteries, and the trough of the connecting plate protrudes towards the battery body.

On the basis of the above technical solution, preferably, a gap of at least 1mm is provided between the trough and the battery body.

On the basis of the above technical solution, preferably, the connection plates correspond to adjacent gaps of two batteries.

Compared with the prior art, the battery busbar and the battery module have the following beneficial effects:

(1) Through setting up the connecting plate to wavy structure, it is including crest and trough, because the one side parallel and level of crest and fixed plate, so when the installation, can be with the one side orientation of crest and fixed plate parallel and level keep away from the direction of battery, later with this busbar and battery welding back, the battery module that forms can have a smooth surface, conveniently laminate insulating PC piece, can improve battery module's insulation protection effect.

(2) The fixed plate and the connecting plate are of an integrated structure, and can be formed in a stamping mode, so that the busbar has the advantage of convenience in production.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a battery buss bar of the present utility model;

FIG. 2 is a front view of a battery buss bar of the present utility model;

fig. 3 is a perspective view of the battery module according to the present utility model;

fig. 4 is a front view of the battery module according to the present utility model;

fig. 5 is a structural view of a conventional battery bus bar.

In the figure: the fixing plate 1, the connecting plate 2, the wave crest 201, the wave trough 202, the battery 3, the battery body 31, the pole 32 and the camber 100.

Detailed Description

The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

As shown in fig. 1 to 4, the battery busbar of the present utility model includes a fixing plate 1 and a connection plate 2; the battery module of the utility model comprises the battery busbar and the battery 3.

Wherein, the two ends of the fixed plate 1 and the connecting plate 2 are respectively provided with one fixed plate; the connecting plate 2 is in a wave-shaped structure, and the connecting plate 2 is provided with at least one wave crest 201 and at least one wave trough 202, and the wave crest 201 is flush with one surface of the connecting plate 2.

The battery 3 comprises a battery body 31 and a pole column 32, wherein the pole column 32 is arranged on the battery body 31, and at least two batteries 3 are arranged in parallel; the battery busbar is connected with the poles 32 of two adjacent batteries 3 through two fixing plates 1, the connecting plate 2 is positioned between the poles 32 of two batteries 3, and the trough 202 of the connecting plate 2 protrudes toward the battery body 31.

In the above structure, the fixing plates 1 are used for connecting the poles 32 of the batteries 3, specifically, when in connection, one fixing plate 1 is welded with the pole 32 of one battery 3, and the other fixing plate 1 is welded with the pole 32 of the other battery, so that the electrical connection between the two batteries 3 is realized. The provision of the peaks 201 and valleys 202 allows the busbar to deform when the cells 3 expand, thereby accommodating the gap variation between the two cells 3 to avoid failure of the welds between the busbar and the post 32.

Preferably, the connection plates 2 correspond to adjacent gaps of the two batteries 3. In the above-described structure, when the two connected batteries 3 of the connection plate 2 are expanded in such a mounted state, the connection plate 2 is uniformly stressed, and can better withstand the deformation force. In some cases, the connection plate 2 may not be disposed corresponding to the gap between the two batteries 3, that is, the two fixing plates 1 at two ends of the connection plate 2 are different in size, which may be adjusted according to the specific application situation of the bus bar on the batteries 3.

When installing this battery busbar on to battery 3, install the crest 201 of connecting plate 2 towards one side of keeping away from battery body 31, so after battery 3 connects this battery busbar and forms battery module, battery module's upper surface can be comparatively smooth, when installing insulating PC piece on to battery module, the laminating that insulating PC piece and battery module can be better can improve insulating protection effect of insulating PC piece, and battery module's outward appearance can be better simultaneously.

Further, the web 2 has at least one peak 201 and two at least valleys 202. One prior art bus structure is shown in fig. 5. In the conventional battery busbar, only one arch 100 is usually provided at the center thereof, and when the battery busbar is assembled to the battery, the mounting of the insulating PC sheet is affected if the arch 100 is mounted away from the battery, and the battery body 31 is too close if the arch 100 is oriented toward the battery. In general, the battery body 31 is usually made of a steel shell or an aluminum shell, and the camber 100 is too close to the battery body 31, which is easy to cause a short circuit phenomenon. For this reason, the connecting plate 2 has at least one peak 201 and at least two valleys 202, and the connecting plate 2 is in a multi-section bending state, which ensures that the connecting plate 2 has an extending capability, and meanwhile, the connecting plate 2 is far away from the battery body 31, and a certain safety distance is provided between the connecting plate 2 and the battery body 31, thereby improving the use safety of the battery busbar. Preferably, there is a gap of at least 1mm between the trough 202 and the battery body 31.

Further, the protruding height of the valleys 202 is 1.5mm. Typically, the height of the post 32 in the cell is 2.6mm, so that there is a 1.1mm safety gap between the connection plate 2 and the cell body 32 after the present cell busbar is installed. Of course, the protruding height of the valleys 202 may be adjusted according to the specific height of the poles 32 in the battery.

In the battery busbar, the fixing plate 1 and the connecting plate 2 are made of aluminum materials, so that the battery busbar has the advantages of easiness in processing and good extensibility, and can effectively compensate the interval generated by battery expansion so as to avoid the failure of welding spots of the fixing plate 1 and the battery pole 32. Preferably, the fixing plate 1 and the connecting plate 2 are integrally formed in a stamping mode, so that the structural strength of the battery busbar is guaranteed, and the battery busbar has the advantage of convenience in production.

Further, the thickness of the fixing plate 1 and the connecting plate 2 is 1.5mm. Setting the fixing plate 1 and the connecting plate 2 to this thickness can avoid occurrence of cracks at the time of punching, and can ensure the ductility of the connecting plate 2. Of course, the specific thickness of the fixing plate 1 and the connecting plate 2 can be adaptively adjusted according to the size of the battery 3 and the size of the battery busbar.

The specific implementation steps are as follows:

when the battery busbar is mounted on the battery 3, a plurality of batteries 3 are arranged in parallel, one fixing plate 1 of the battery busbar is welded with the pole 32 of one battery 3, and the other fixing plate 1 is welded with the pole 32 of the adjacent battery 3, so that the battery busbar is mounted. In a specific operation, to make the trough 202 face one side of the battery body 31, the battery module thus formed has a relatively flat upper surface, so that the insulating PC sheet is conveniently attached.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A battery buss bar, characterized by: comprises a fixed plate (1) and a connecting plate (2), wherein,

the fixing plates (1) are respectively arranged at two ends of the connecting plate (2);

the connecting plate (2) is of a wavy structure, the connecting plate (2) is provided with at least one wave crest (201) and at least one wave trough (202), and the wave crest (201) is flush with one surface of the fixed plate (1).

2. The battery buss bar of claim 1, wherein: the web (2) has at least one peak (201) and at least two valleys (202).

3. The battery buss bar of claim 1, wherein: the protruding height of the trough (202) is 1.5mm.

4. The battery buss bar of claim 1, wherein: the fixing plate (1) and the connecting plate (2) are made of aluminum materials.

5. The battery buss bar of claim 4, wherein: the fixing plate (1) and the connecting plate (2) are integrally formed in a stamping mode.

6. The battery buss bar of claim 1, wherein: the thickness of the fixing plate (1) and the connecting plate (2) is 1.5mm.

7. A battery module, characterized in that: comprising a battery busbar according to any one of claims 1 to 6.

8. The battery module of claim 7, wherein: the battery also comprises a battery (3), the battery (3) comprises a battery body (31) and a pole (32), the pole (32) is arranged on the battery body (31), wherein,

the batteries (3) are arranged in parallel;

the battery busbar is connected with the poles (32) of two adjacent batteries (3) through two fixed plates (1), the connecting plate (2) is positioned between the poles (32) of two batteries (3), and the trough (202) of the connecting plate (2) protrudes towards the battery body (31).

9. The battery module of claim 8, wherein: a gap of at least 1mm is provided between the trough (202) and the battery body (31).

10. The battery module of claim 8, wherein: the connecting plates (2) correspond to adjacent gaps of the two batteries (3).