CN216161815U

CN216161815U - Battery frame structure

Info

Publication number: CN216161815U
Application number: CN202121935241.7U
Authority: CN
Inventors: 李彦辉; 张亚儒; 刘江伊
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-04-01
Anticipated expiration: 2031-08-18

Abstract

The utility model relates to a battery frame structure which comprises a main body (1) formed by bending a stainless steel band, and a welding seam (2), a liquid injection hole (3), a pole column hole (4) and an explosion-proof valve hole (5) which are arranged on the main body (1), wherein the upper side and the lower side of the main body (1) are respectively provided with an upper flanging (11) and a lower flanging (12). Compared with the prior art, the utility model can improve the frame strength, reduce the cell transfer welding difficulty, reduce the frame positioning difficulty, improve the welding consistency of the frame and the cover plate, improve the welding operability and reduce the reject ratio of cell damage caused by shell welding.

Description

Battery frame structure

Technical Field

The utility model relates to the technical field of battery manufacturing, in particular to a battery frame structure.

Background

The frame is used as a key component for manufacturing the battery case, and the frame is manufactured by welding the head and the tail of the stainless steel band after four times of bending. Because the stainless steel frame is longer, bend the welding back framework softer and warp easily, lead to electric core switching welding degree of difficulty big, secondly, the location difficulty when framework and apron welding leads to the welding uniformity poor, and the welding defective rate is high, and in addition, framework stainless steel band itself is thinner, can't realize penetrating through the welding perpendicularly, can only adopt the oblique welding, because the welding is nearer apart from electric core, easily leads to electric core diaphragm damage, influences the battery performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery frame structure, which improves the frame strength and reduces the switching welding difficulty of a battery core.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a battery frame structure, includes the main part that is formed by stainless steel strip bending and sets up welding seam, notes liquid hole, utmost point post hole and explosion-proof valve hole in the main part, the main part upper and lower both sides be provided with turn-ups and turn-down rims respectively.

Preferably, the upper flanging and the lower flanging have the same structure and are both flanging edges.

Preferably, the width of the upper flanging and the lower flanging is 1.5-2 mm.

Preferably, the main body is formed by four times of bending of a stainless steel band and then welding the head and the tail, and the welding position is a welding line.

Preferably, the bending part of the main body is provided with an R angle.

Further preferably, the radius of the R angle is 4.5-5.5 mm.

Preferably, the thickness of the stainless steel band is 0.5 mm.

Preferably, the upper flanging is connected with the upper cover plate in a welding mode, and the lower flanging is connected with the lower cover plate in a welding mode.

Preferably, there are two sets of pole holes, and each set includes 6 pole holes arranged at equal intervals.

Preferably, the explosion-proof valve holes are formed at two ends of the main body through punching.

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

1. the utility model can improve the frame strength, reduce the cell transfer welding difficulty, reduce the frame positioning difficulty, improve the welding consistency of the frame and the cover plate, improve the welding operability and reduce the reject ratio of cell damage caused by shell welding;

2. the frame of the utility model adopts a flanging mode, thereby improving the strength of the frame and reducing the switching welding difficulty of the battery cell;

3. the frame flanging provides enough welding area for the cover plate, effectively reduces the positioning difficulty, and improves the welding consistency of the frame body and the cover plate;

4. after the frame is flanged, the supporting area of the cover plate is increased, enough welding area can be provided, and the welding operability is enhanced;

5. after the frame is flanged, the cover plate is welded at the flanging position and is far away from the battery cell, so that the reject ratio of the battery cell caused by welding the shell can be effectively reduced.

Drawings

FIG. 1 is a schematic structural diagram of a battery frame structure according to the present invention;

FIG. 2 is a partial schematic view of a battery frame structure according to the present invention;

in the figure: 1-main body, 11-upper flanging, 12-lower flanging, 2-welding seam, 3-liquid injection hole, 4-pole column hole and 5-explosion-proof valve hole.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. The following examples are carried out on the premise of the technical scheme of the utility model, and detailed embodiments and specific operation processes are given, but the scope of the utility model is not limited to the following examples.

Example 1

The utility model provides a battery frame structure, the structure is shown as figure 1 ~ 2, includes the main part 1 that is formed by four times of bending back end to end welding by 0.5mm thick stainless steel band, and the welding department forms welding seam 2, is located the long limit intermediate position of main part 1. The upper portion of main part 1 is equipped with turn-ups 11, and the lower part is equipped with turn-ups 12 down, and turn-ups 11 and turn-ups 12 down are the flanging, and the turn-ups width is 1.75 mm. The bending parts at the four corners of the main body 1 form an angle R, and the inner diameter of the angle R is 5 mm. Still be equipped with two sets of utmost point post holes 4 on the long edge of one side of main part 1, every utmost point post hole 4 of group includes 6 equidistant settings, the diameter is 3.8 mm's utmost point post hole 4, is convenient for assemble with other structures. And 1 liquid injection hole 3 is arranged between the two groups of pole column holes. All be provided with explosion-proof valve opening 5 on the minor face at 1 both ends of main part, avoid blasting process influence utmost point post, explosion-proof valve opening 5 is the slot type hole, accomplishes through the mould punching a hole.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The battery frame structure is characterized by comprising a main body (1) formed by bending a stainless steel strip, and a welding seam (2), a liquid injection hole (3), a pole column hole (4) and an explosion-proof valve hole (5) which are arranged on the main body (1), wherein an upper flanging (11) and a lower flanging (12) are respectively arranged on the upper side and the lower side of the main body (1).

2. The battery frame structure according to claim 1, wherein the upper flange (11) and the lower flange (12) have the same structure and are both flanged edges.

3. The battery frame structure according to claim 1, wherein the width of the upper flange (11) and the lower flange (12) is 1.5-2 mm.

4. The battery frame structure according to claim 1, wherein the main body (1) is formed by bending a stainless steel band four times and then welding the stainless steel band end to end, and the welding position is a welding seam (2).

5. The battery frame structure according to claim 1, wherein the bending part of the main body (1) is provided with an R-angle.

6. The battery frame structure of claim 5, wherein the radius of the R-angle is 4.5-5.5 mm.

7. The battery frame structure of claim 1, wherein the stainless steel band has a thickness of 0.5 mm.

8. The battery frame structure according to claim 1, wherein the upper flange (11) is welded to the upper cover plate, and the lower flange (12) is welded to the lower cover plate.

9. The battery frame structure according to claim 1, wherein the pole holes (4) are arranged in two groups, each group comprising 6 pole holes (4) arranged at equal intervals.

10. The frame structure of battery according to claim 1, characterized in that the explosion-proof valve holes (5) are provided at both ends of the main body (1) and formed by punching.