CN218362818U

CN218362818U - Battery cell welding device and cover plate assembly thereof

Info

Publication number: CN218362818U
Application number: CN202222536218.1U
Authority: CN
Inventors: 田瑜; 王彬彬
Original assignee: Autoflight Kunshan Co Ltd
Current assignee: Autoflight Kunshan Co Ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-24
Anticipated expiration: 2032-09-23

Abstract

The application relates to the technical field of batteries and discloses a battery cell welding device and a cover plate assembly thereof. The cover plate assembly comprises a bottom plate, wherein the bottom plate comprises a plurality of bottom plate through holes which are spaced side by side; and the plurality of cover pressing parts are arranged on one side of the base plate and are spaced side by side and used for pressing the lug plates of the corresponding battery cells, and the cover pressing parts are provided with a plurality of cover pressing part through holes which are arranged in one-to-one correspondence with the base plate through holes. This application apron subassembly can ensure to compress tightly whole face of weld for hug closely between the utmost point auricle, guarantee to weld respond well when laser welding, do not produce bad phenomena such as welding blowhole and rosin joint.

Description

Battery cell welding device and cover plate assembly thereof

Technical Field

The application relates to the technical field of power batteries, in particular to a battery cell welding device and a cover plate assembly thereof.

Background

Some frock of need development is assembled in the trial-manufacturing of battery module for the trial-manufacturing research and development of small batch, to the equipment of some jumbo size battery module, difficult assurance is hugged closely between the utmost point ear when the welding machine, consequently is difficult to guarantee the welding effect when laser welding, produces bad phenomena such as welding hole explosion and rosin joint easily. If the automatic pressing equipment is adopted for assembly, the equipment is complex in structure and high in cost, and is particularly not suitable for small-batch trial production and development.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide an electricity core welding set and apron subassembly thereof, this application apron subassembly can ensure to compress tightly whole face of weld for hug closely between the utmost point ear, guarantee that welding effect is good when laser welding, do not produce bad phenomena such as welding hole explosion and rosin joint.

In order to solve the above technical problem, the present application provides a cover plate assembly for welding a battery cell, including: a base plate comprising a plurality of base plate through holes spaced side by side; and the cover pressing parts are arranged on one side of the bottom plate at intervals side by side and are used for pressing the lug pieces of each corresponding battery cell, and the cover pressing parts are provided with a plurality of cover pressing part through holes which are arranged one by one in a manner of being opposite to the through holes of the bottom plate.

The application still provides an electricity core welding set, include as above-mentioned be used for electric core welded apron subassembly to and the soldered connection, the soldered connection can pass bottom plate through-hole and capping portion through-hole are right the utmost point ear piece of electric core welds.

Preferably, the cover portion includes a cover plate and a support member connecting the cover plate and the base plate.

Preferably, the cover plate comprises an installation part and a convex pressing part, the installation part is used for being connected with the supporting piece, and the convex pressing part is protruded from the installation part and used for covering and pressing the pole lug piece of the corresponding battery cell.

Preferably, the supporting member includes a supporting column and an elastic member sleeved on the supporting column.

Preferably, the cover plate and the supporting column are movably connected, and the cover plate is configured to compress the elastic member in the direction of the supporting column to generate displacement.

Preferably, the elastic member is a spring.

Preferably, the through hole of the bottom plate and the through hole of the cover pressing part are both strip-shaped through holes.

Preferably, a pair of handles is provided on the other side of the bottom plate opposite to the lid portion.

Preferably, at least one pair of fastening portions for fixedly attaching to the battery cell side is provided at each of both ends of the bottom plate.

Preferably, the number of said cover portions is at least 25.

This application apron subassembly can ensure to compress tightly whole face of weld for hug closely between the utmost point ear, guarantee that welding effect is good when laser welding, do not produce bad phenomena such as welding hole explosion and rosin joint.

Drawings

Fig. 1 is a schematic structural diagram illustrating a cover plate assembly for cell welding according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another side of a cover plate assembly for cell welding according to an embodiment of the present application;

FIG. 3 is a partial enlarged view of A in FIG. 2;

fig. 4 is a schematic diagram illustrating a cell tab sheet welded by the cover plate assembly for cell welding according to the embodiment of the present application;

fig. 5 is a partial enlarged view of B in fig. 4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

Embodiments of the present application are described below with reference to the accompanying drawings, and as shown in fig. 1 to 5, a cover plate assembly for cell welding according to embodiments of the present application includes: bottom plate 1 and a plurality of lid splenium 2, bottom plate 1 is provided with a plurality of spaced bottom plate through-holes 10 side by side, and lid splenium 2 is located 1 one side of bottom plate and is arranged at the interval side by side, and lid splenium 2 is used for each utmost point ear piece 30 that corresponds electric core 3 of lid pressure, and lid splenium 2 has a plurality of lid splenium through-holes 20 that set up with bottom plate through-hole 10 one-to-one.

Specifically, as shown in fig. 3, the pressing portion 2 includes a cover plate 21 and a support 22, and the support 22 connects the cover plate 21 and the base plate 1. The cover plate 21 includes a mounting portion 211 and a pressing portion 212 connected to the mounting portion 211, the mounting portion 211 is configured to be connected to the support member 22, and the pressing portion 212 protrudes from the mounting portion 211 and is configured to directly press the tab 30 of the corresponding battery cell 3. The supporting member 22 includes a supporting post (not shown) and an elastic member fitted over the supporting post. In this embodiment, the elastic member may be a spring. Further, apron 21 and support column are swing joint, and apron 21 can slightly compress the spring in the support column direction and produce certain displacement to guarantee certain elasticity of pressing, avoid crossing the piezoelectric core side.

The through hole 10 of the bottom plate and the through hole 20 of the cover pressing part are both strip-shaped through holes, and the two through holes correspond to the welding parts of the pole lug pieces 30. After the lug plates 30 are pressed by the convex pressing part 212, the lug plates are tightly attached to each other, the welding head can penetrate through the base plate through hole 10 and the cover pressing part through hole 20 to weld the lug plates 30 of the battery cell 3, the welding effect is good when laser welding is guaranteed, and poor phenomena such as welding hole explosion and insufficient welding are not generated.

Furthermore, a pair of handles 4 is arranged on the other side of the bottom plate 1 opposite to the pressing part 2, so that the cover plate assembly can be conveniently and manually installed. At least one pair of fastening parts 11 for fixedly mounting with the battery cell side are respectively arranged at two ends of the bottom plate 1. Convenient fixed mounting is to electric core one side, the splenium quantity of lid is 25 at least, is applicable to the equipment of jumbo size battery module.

The application still provides a battery cell welding set, include as above-mentioned be used for battery cell welded apron subassembly to and the soldered connection, the soldered connection can pass bottom plate through-hole 10 and capping portion through-hole 20 and weld utmost point ear piece 30 of electric core 3.

This application electricity core welding set can ensure to compress tightly whole face of weld for hug closely between the utmost point ear, guarantee that welding effect is good when laser welding, do not produce bad phenomena such as welding hole explosion and rosin joint.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present disclosure be covered by the claims of the present application.

Claims

1. A cover plate assembly for cell welding, comprising:

a base plate (1), the base plate (1) comprising a plurality of base plate through holes (10) spaced side by side;

a plurality of lid splenium (2), locate bottom plate (1) one side interval side by side and be used for lid to press utmost point ear piece (30) of each corresponding electric core (3), lid splenium (2) have a plurality of with lid splenium through-hole (20) that bottom plate through-hole (10) one-to-one set up.

2. Cover plate assembly for cell welding according to claim 1, characterized in that the cover part (2) comprises a cover plate (21) and a support (22) connecting the cover plate (21) and the base plate (1).

3. The cover plate assembly for cell welding of claim 2, wherein the cover plate (21) comprises a mounting portion (211) and a protruding portion (212), the mounting portion (211) is used for connecting with the support member (22), and the protruding portion (212) protrudes from the mounting portion (211) and is used for covering and pressing the tab piece (30) of the corresponding cell (3).

4. The cover plate assembly for cell welding according to claim 3, wherein the support member (22) comprises a support column and an elastic member sleeved on the support column.

5. The cover plate assembly for cell welding according to claim 4, wherein the cover plate (21) and the support column are movably connected, and the cover plate is configured to be capable of compressing the elastic member in the direction of the support column to generate displacement.

6. The cover plate assembly for cell welding according to claim 4, wherein the elastic member is a spring.

7. The cover plate assembly for cell welding according to claim 1, wherein the bottom plate through hole (10) and the capping portion through hole (20) are both elongated through holes.

8. The cover plate assembly for cell welding according to claim 1, characterized in that a pair of handles (4) is arranged on the other side of the bottom plate (1) opposite to the capping portion (2).

9. The cover plate assembly for cell welding according to claim 1, characterized in that at least one pair of fastening portions (11) for fixedly mounting to the cell side are respectively provided on both ends of the base plate (1).

10. A cell welding device comprising a cover plate assembly for cell welding according to any one of claims 1 to 8, and a welding head capable of welding the tab sheet (30) of the cell (3) through the base plate through hole (10) and the cover press through hole (20).