CN219053398U

CN219053398U - Busbar welding auxiliary fixtures

Info

Publication number: CN219053398U
Application number: CN202223423560.7U
Authority: CN
Inventors: 李冰; 杨晓
Original assignee: Svolt Energy Technology Wuxi Co Ltd
Current assignee: Svolt Energy Technology Wuxi Co Ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-23
Anticipated expiration: 2032-12-20

Abstract

The utility model provides a busbar welding auxiliary tool which comprises a supporting plate and a pressing plate, wherein the supporting plate is installed on a battery module and is provided with an avoidance groove for avoiding a pole, the avoidance groove can accommodate a busbar, the pressing plate is arranged on the supporting plate and is provided with a pressing part and a through groove for pressing the busbar and the pole in the height direction, and the through groove is used for avoiding external welding equipment. According to the busbar welding auxiliary tool, the supporting plate is arranged on the battery module, the avoiding groove is formed in the supporting plate, the avoiding groove avoids the pole and accommodates the busbar, and therefore the position between the busbar and the pole in the horizontal direction is limited. Simultaneously be equipped with the clamp plate in the backup pad, the clamp plate compress tightly the busbar in the direction of height of portion that compresses tightly to inject busbar and utmost point post in the direction of height, the cooperation of backup pad and busbar is inject the relative position of busbar and utmost point post, and then supplementary welding precision that improves between busbar and the utmost point post.

Description

Busbar welding auxiliary fixtures

Technical Field

The utility model relates to the technical field of battery modules, in particular to an auxiliary busbar welding tool.

Background

Under the background of the national great development of novel energy sources, the market demand of lithium batteries is greatly increased. In the power battery manufacturing process, a plurality of single battery cells are electrically connected through aluminum bus bar welding, and hole site distances of all bus bars are uniform in a traditional welding tool. However, the thickness difference of the battery cells of the battery modules with different sizes is large, the situation that the hole sites of the bus bars and the hole sites of the battery cell poles are not concentric easily occurs along with the thickness difference of the battery cells, and easily welded parts easily deviate to the outer surfaces of the poles and even the whole battery cells are welded through in the welding process, so that the reject ratio and the rejection rate of the battery modules are increased.

Disclosure of Invention

In view of the above, the present utility model is directed to an auxiliary welding fixture for a busbar to assist in improving the welding accuracy between the busbar and the post of a battery module.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a busbar welding auxiliary fixtures for supplementary with busbar and battery module's utmost point post welding together, welding auxiliary fixtures includes:

the support plate is used for being mounted on the battery module, an avoidance groove used for avoiding the pole is formed in the support plate, and the avoidance groove can accommodate the busbar so as to limit the positions of the busbar and the pole in the horizontal direction;

the pressing plate is arranged on the supporting plate and is provided with a pressing part for pressing the busbar and the pole in the height direction; corresponding to the position of the pole, the pressing plate is provided with a through groove penetrating through the pressing plate, and the through groove is used for avoiding external welding equipment.

Further, the avoiding groove is arranged along with the busbar;

the pressing part comprises a protruding block arranged on the pressing plate, and the protruding block is arranged corresponding to the avoidance groove.

Further, dodge the groove and be a plurality of, every dodge the groove all corresponding to two adjacent electric core of battery module the utmost point post sets up.

Further, the support plate is further provided with a yielding groove communicated with the avoidance groove, and the yielding groove is used for yielding the clamping part which is arranged in the avoidance groove in a converging manner.

Further, the supporting plate is further provided with a pressing piece for pressing the pressing plate, and the pressing plate is provided with an avoiding space for avoiding the pressing piece.

Further, the welding auxiliary tool further comprises a positioning part, the positioning part comprises a first positioning part and a second positioning part, the first positioning part can limit the relative position of the supporting plate and the battery module, and the second positioning part is used for limiting the relative position of the pressing plate and the supporting plate.

Further, the first positioning part comprises a plurality of second bosses which are distributed at intervals along the circumferential direction of the supporting plate, and the inner wall of the second bosses can be attached to the outer wall of the battery module so as to limit the relative position of the supporting plate and the battery module;

further, the second positioning portion comprises a plurality of first bosses which are distributed at intervals along the circumferential direction of the pressing plate, and the inner wall of the first boss is attached to the outer wall of the supporting plate so as to limit the relative position of the pressing plate and the supporting plate.

Further, the welding auxiliary tool further comprises an adjusting part for adjusting the relative position of the supporting plate and the battery module.

Further, the adjusting part comprises a plurality of adjusting screws arranged on the supporting plate, the adjusting screws are at least distributed on two sides of the supporting plate, and one end of each adjusting screw penetrates through the supporting plate and is abutted to the side wall of the battery module.

Compared with the prior art, the utility model has the following advantages:

according to the auxiliary busbar welding tool, the supporting plate is arranged on the battery module, the avoiding groove is formed in the supporting plate, the electrode post is avoided by the avoiding groove, and the busbar is accommodated, so that the position between the busbar and the electrode post in the horizontal direction is limited. Simultaneously be equipped with the clamp plate in the backup pad, the clamp plate compress tightly the busbar in the direction of height of portion that compresses tightly to inject busbar and utmost point post in the direction of height, the cooperation of backup pad and busbar is inject the relative position of busbar and utmost point post, and then supplementary welding precision that improves between busbar and the utmost point post.

In addition, the avoidance groove is arranged along with the busbar, so that the position of the busbar is well limited. The support plate is also provided with a yielding groove communicated with the yielding groove and used for yielding the clamping part for placing the busbar in the yielding groove, so that the busbar can be placed conveniently. And be equipped with the clamp that is used for compressing tightly the clamp plate in the backup pad, be equipped with the space of dodging the clamp that compresses tightly the clamp plate on the clamp plate, be favorable to compressing tightly the clamp plate in the backup pad.

In addition, the welding auxiliary tool further comprises a first positioning part and a second positioning part which are respectively used for limiting the relative position between the support plate and the battery module and the relative position between the pressing plate and the support plate, so that the quick positioning of the tool is facilitated, and the efficiency of welding the busbar and the pole is improved. The first positioning part and the second positioning part are respectively arranged as a first boss and a second boss, and the structure is simple and the arrangement is convenient. Be equipped with a plurality of adjusting screw in the backup pad, be favorable to realizing the fine setting between backup pad and the battery module to improve positioning accuracy.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is an exploded view of a busbar welding auxiliary tool according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a support plate according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a pressing plate according to an embodiment of the utility model.

Reference numerals illustrate:

1. a support plate; 101. an avoidance groove; 102. a relief groove; 103. a first boss;

2. a pressing plate; 201. a bump; 202. a through groove; 203. a second boss; 204. an avoidance space;

3. a pressing member; 4. and (5) adjusting a screw.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The embodiment relates to a busbar welding auxiliary tool which is used for assisting in welding a busbar and a pole of a battery module together. In the whole structure, as shown in fig. 1, the welding auxiliary tool comprises a supporting plate 1 and a pressing plate 2.

Wherein, backup pad 1 is used for installing to the battery module on, is equipped with on the backup pad 1 and is used for dodging the groove 101 of dodging of utmost point post, and dodges the groove 101 and can hold the busbar to inject the position of busbar and utmost point post in the horizontal direction. The pressing plate 2 is arranged on the supporting plate 1, and a pressing part for pressing the bus bar and the pole in the height direction is arranged on the pressing plate 2. In addition, corresponding to the position of the pole, the pressing plate 2 is provided with a through groove 202 penetrating through the pressing plate 2, and the through groove 202 is used for avoiding external welding equipment.

According to the busbar welding auxiliary tool, the supporting plate 1 is arranged on the battery module, the avoiding groove 101 is formed in the supporting plate 1, the avoiding groove 101 is used for avoiding the pole and accommodating the busbar, and therefore the position between the busbar and the pole in the horizontal direction is limited. Simultaneously be equipped with clamp plate 2 on backup pad 1, clamp plate 2's clamp section can compress tightly the busbar in the direction of height to inject busbar and utmost point post in the direction of height, the cooperation of backup pad 1 and busbar is inject the relative position of busbar and utmost point post, and then supplementary welding precision that improves between busbar and the utmost point post.

Based on the above design concept, an exemplary structure of the busbar welding auxiliary tool of the present embodiment is shown in fig. 1. Firstly, it should be noted that the battery module is formed by stacking a plurality of battery cells in a arraying manner, and two sides of the top of each battery cell are respectively provided with a positive electrode post and a negative electrode post, and the positive electrode posts or the negative electrode posts between two adjacent battery cells are connected through a busbar.

In this embodiment, referring to fig. 1 and 2, when the support plate 1 is disposed on the battery module, a plurality of avoidance grooves 101 are disposed on the support plate 1, and each avoidance groove 101 is disposed corresponding to the pole of two adjacent battery cells of the battery module. And as a preferred embodiment, the relief groove 101 is configured as a conformal bus bar. The general busbar is rectangular plate-shaped metal body, and the corresponding dodge groove 101 is arranged as a rectangular groove, and the dimension of the dodge groove 101 is consistent with or slightly larger than that of the busbar so as to accommodate the busbar. It will be appreciated that the shape of the relief groove 101 changes with the bus bar as the shape and configuration of the bus bar changes.

As a preferred embodiment, in order to facilitate placing the busbar in the avoidance groove 101, in this embodiment, the support plate 1 is further provided with a yielding groove 102 communicating with the avoidance groove 101, and the yielding groove 102 is used for yielding a clamping portion for placing the busbar in the avoidance groove 101. Referring to fig. 2, two arc-shaped grooves, which are relief grooves 102, are formed on both side walls of the middle position of the relief groove 101. When adopting external equipment or artifical etc. clamping means to place the busbar dodge in the groove 101, two groove 102 of stepping down can hold the clamping end of clamping part, and the convenient accurate is placed the busbar dodge in the groove 101.

In this embodiment, as a preferred embodiment, as shown in fig. 3, the pressing portion includes a projection 201 provided on the platen 2, and the projection 201 is provided corresponding to the escape groove 101. The structure is simple, and the setting is convenient. Meanwhile, the through grooves 202 formed in the positions corresponding to the poles penetrate through the two sides of the protruding block 201 up and down, at this time, the middle of the protruding block 201 is solid, the busbar can be pressed on the poles, through holes in the two sides can avoid external welding equipment, and welding of the busbar and the poles is facilitated.

It will be appreciated that the pressing portion for pressing the processing busbar against the post may be provided not only as the bump 201 but also as other pressing structures such as the ejector rod, which is not particularly limited herein, and may be provided according to actual situations.

In order to ensure that the pressing portion on the pressing plate 2 always presses the busbar and the pole, it is necessary to keep a pressed state between the pressing plate 2 and the support plate 1, and in this case, as a preferred embodiment, referring to fig. 1 to 3, a pressing member 3 for pressing the pressing plate 2 is further provided on the support plate 1, and a recess 204 for receiving the pressing member 3 is provided on the pressing plate 2. And as a preferable mode, the pressing piece 3 can be a horizontal elbow clamp in the prior art, the diagonal angle of the horizontal elbow clamp is arranged at two corners of the supporting plate 1 through a structure such as a bolt, the two corresponding corners of the pressing plate 2 are respectively provided with a rectangular avoiding space 204, and the pressing plate 2 is pressed on the supporting plate 1 through the horizontal elbow clamp on the supporting plate 1. The horizontal elbow clamps are arranged at two opposite angles, so that the clamping effect is better under the condition that the occupied space of the supporting plate 1 is reduced. Of course, other positions where the horizontal toggle clamp is provided on top of the support plate 1 are not particularly limited herein.

In addition, in this embodiment, as a preferred embodiment, the welding auxiliary tool further includes a positioning portion, where the positioning portion includes a first positioning portion and a second positioning portion. Wherein the first positioning part can define the relative positions of the support plate 1 and the battery module, and the second positioning part can define the relative positions of the pressing plate 2 and the support plate 1.

And as a preferred embodiment, referring to fig. 1 and 2, the first positioning part includes a plurality of first bosses 103 spaced apart along the circumferential direction of the support plate 1, and the inner walls of the first bosses 103 can be attached to the outer walls of the battery module to limit the relative positions of the support plate 1 and the battery module.

Preferably, as shown in fig. 3, the second positioning portion includes a plurality of second bosses 203 distributed at intervals along the circumferential direction of the platen 2, and an inner wall of the second boss 203 is attached to an outer wall of the support plate 1 to limit the relative position of the platen 2 and the support plate 1.

In addition, the welding auxiliary tool in the present embodiment further includes an adjusting portion to adjust the relative positions of the support plate 1 and the battery module. As a preferred embodiment, the adjusting part includes a plurality of adjusting screws 4 disposed on the support plate 1, the plurality of adjusting screws 4 are at least distributed on two sides of the support plate 1, and one end of each adjusting screw 4 passes through the support plate 1 and abuts against a side wall of the battery module to adapt to the sizes of different battery modules.

Referring to fig. 1 and 2, a plurality of adjusting screws 4 are correspondingly disposed on a plurality of first bosses 103 disposed around the support plate 1, and each first boss 103 is provided with an adjusting screw 4, one end of each adjusting screw 4 passes through the first boss 103 and abuts against a side wall of the battery module, and the relative positions between the support plate 1 and the battery module are finely adjusted by adjusting the adjusting screws 4 on two opposite sides of the battery module, so that positioning accuracy between the busbar and the pole is improved.

The busbar welding auxiliary fixtures of this embodiment, when using, backup pad 1 is placed on the battery module to carry out thick location through first boss 103 and battery module's lateral wall, adjust adjusting screw 4 then, fine setting backup pad 1 and battery module's relative position, with the size of adaptation different battery modules, make dodging Kong Jingzhun on the backup pad 1 can correspond the utmost point post of two adjacent electric cores.

Then place the busbar in dodging the top of groove 101 interior utmost point post to place clamp plate 2 on backup pad 1 through second boss 203, the lug 201 of clamp plate 2 bottom corresponds dodges groove 101 this moment, and compresses tightly busbar and utmost point post downwards, makes busbar and utmost point post keep connecting, when outside laser welding equipment passes through groove 202 and carries out laser welding, can effectually avoid producing the condition of rosin joint or welding off tracking.

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. The utility model provides a busbar welding auxiliary fixtures for assist with busbar and battery module's utmost point post welding together, its characterized in that, welding auxiliary fixtures includes:

the support plate (1) is used for being mounted on the battery module, an avoidance groove (101) for avoiding the pole is formed in the support plate (1), and the avoidance groove (101) can accommodate the busbar so as to limit the positions of the busbar and the pole in the horizontal direction;

the pressing plate (2) is arranged on the supporting plate (1), and a pressing part used for pressing the busbar and the pole in the height direction is arranged on the pressing plate (2); corresponding to the position of the pole, the pressing plate (2) is provided with a through groove (202) penetrating through the pressing plate (2), and the through groove (202) is used for avoiding external welding equipment.

2. The busbar welding auxiliary fixture according to claim 1, wherein:

the avoidance groove (101) is arranged along with the busbar;

the pressing part comprises a protruding block (201) arranged on the pressing plate (2), and the protruding block (201) is arranged corresponding to the avoidance groove (101).

3. The busbar welding auxiliary fixture according to claim 2, wherein:

the number of the avoidance grooves (101) is multiple, and each avoidance groove (101) corresponds to the pole column of two adjacent battery cells of the battery module.

4. The busbar welding auxiliary fixture according to claim 2, wherein:

the support plate (1) is further provided with a yielding groove (102) communicated with the avoidance groove (101), and the yielding groove (102) is used for yielding the clamping part which is arranged in the avoidance groove (101) in a converging manner.

5. The busbar welding auxiliary fixture according to claim 4, wherein:

the support plate (1) is also provided with a pressing piece (3) for pressing the pressing plate (2), and the pressing plate (2) is provided with an avoiding space (204) for avoiding the pressing piece (3).

6. The busbar welding auxiliary fixture according to any one of claims 1 to 5, wherein:

the welding auxiliary tool further comprises a positioning part, the positioning part comprises a first positioning part and a second positioning part, the first positioning part can limit the relative position of the supporting plate (1) and the battery module, and the second positioning part is used for limiting the relative position of the pressing plate (2) and the supporting plate (1).

7. The busbar welding auxiliary fixture according to claim 6, wherein:

the first positioning part comprises a plurality of first bosses (103) which are distributed along the circumferential direction of the supporting plate (1) at intervals, and the inner wall of the first boss (103) can be attached to the outer wall of the battery module so as to limit the relative position of the supporting plate (1) and the battery module.

8. The busbar welding auxiliary fixture according to claim 6, wherein:

the second positioning part comprises a plurality of second bosses (203) which are distributed along the circumferential direction of the pressing plate (2) at intervals, and the inner wall of the second bosses (203) is attached to the outer wall of the supporting plate (1) so as to limit the relative position of the pressing plate (2) and the supporting plate (1).

9. The busbar welding auxiliary fixture according to claim 6, wherein:

the welding auxiliary tool further comprises an adjusting part for adjusting the relative positions of the supporting plate (1) and the battery module.

10. The busbar welding auxiliary fixture according to claim 9, wherein:

the adjusting part comprises a plurality of adjusting screws (4) arranged on the supporting plate (1), the adjusting screws (4) are at least distributed on two sides of the supporting plate (1), and one end of each adjusting screw (4) penetrates through the supporting plate (1) and is abutted to the side wall of the battery module.