Unlock instant, AI-driven research and patent intelligence for your innovation.

Tab bending device and bending method for aluminum shell battery

A technology of aluminum shell battery and bending device, which is applied in the direction of feeding device, positioning device, storage device, etc., can solve the problems of increased internal stress at the welding point between the tab and the current collector, wrinkling of the current collector, and damage to the tab glue. It achieves the effects of convenient cover plate welding operation, small increase in internal stress and high production efficiency

Active Publication Date: 2020-12-29
LINKDATA NEW ENERGY CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned operation process can complete the folding of the tab, but there are the following technical defects: the two bending knives apply pressing force to the two sides of the tab respectively, the blade of the bending knife and the tab have a large sliding friction contact area, and the folding The friction force between the blade and the lug is the largest when the blade of the scimitar is bent out of position, which makes the lug tend to be drawn out of the aluminum shell, increasing the internal stress at the welding point between the lug and the current collector (the root of the lug), which is serious When the current collector is wrinkled and the ear glue is damaged, it will cause battery defects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tab bending device and bending method for aluminum shell battery
  • Tab bending device and bending method for aluminum shell battery
  • Tab bending device and bending method for aluminum shell battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as Figure 1-4 As shown, the tab bending device of the aluminum case battery in Example 1 includes a vertical plate-shaped frame 1, a turntable 2 arranged on the front of the frame 1, a drive motor 3 arranged on the back of the frame, and a turntable 2 The cover clamp 4, the battery positioning component 5 and the bending knife punching component 6 on the same side of the movement track, the cover clamp 4 is connected with the turntable 2;

[0052] The drive motor 3 is used to drive the turntable 2 and the cover clamp 4 to turn over and reset. In Embodiment 1, the flip direction of the cover clamp 4 is clockwise, and the bending knife punching assembly 6 is arranged on the counterclockwise side of the cover clamp 4 On the side, the bending knife punching assembly 6 includes a bending knife 61 and a bending knife telescopic drive unit 62, and the blade of the bending knife 61 that is punched with the lug g to form a bending part is located between the battery positi...

Embodiment 2

[0058] Such as Figure 5-9 As shown, Embodiment 2 is based on Embodiment 1, the difference is that the buffer unit includes a fixed block a2, a tension spring a3 and a clamping bolt a4, the fixed block a2 is fixedly connected with the slider of the second sliding table 621, and the bending knife seat 622 includes The tension spring seat b1 and the guide part b2, the surface of the guide part b2 is provided with a guide bump d, the surface of the fixed block a2 is provided with a guide rail c, the guide rail c is slidingly matched with the guide bump d, and the axial direction of the guide rail c is aligned with the second sliding table The sliding direction of the 621 slider is consistent; the extension spring seat b1 is fixedly connected to one end of the guide part b2, the bending knife 61 is fixedly connected to the other end of the guide part b2, and the extension spring a3 is arranged between the extension spring seat b1 and the fixed block a2 , The tightening bolt a4 is ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a tab bending device for an aluminum case battery, which comprises a frame, a rotating part rotatably arranged on the frame, a rotating driving part, a cover clamp located on the same side of the moving track of the rotating part, a battery positioning assembly and The bending knife punching assembly, the cover clamp is connected with the rotating part; the rotating drive part is used to drive the rotating part and the cover clamp to turn over and reset, and the bending knife punching component is arranged on the opposite side of the cover clamp in the turning direction. The scimitar punching assembly includes a bending knife and a bending knife telescopic drive unit, and the punching-shaped bending knife blade is located between the battery positioning assembly and the cover clamp. The tab bending device of the aluminum shell battery is provided with a cover clamp for clamping the cover plate, the rotating part drives the cover clamp to turn over, the cover plate and the tab are turned over at the same time, and a bending part is formed on the tab, which is located on the cover plate The bending knife on the side opposite to the flipping direction of the fixture punches and bends the arc-shaped tab section to complete the S or Z-shaped bending of the tab. The invention also discloses a tab bending method of the aluminum case battery.

Description

technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a tab bending device and a bending method for an aluminum shell battery. Background technique [0002] The negative electrode lug assembled into the shell in the square aluminum shell battery is folded S or Z shape, and its function is to avoid the risk of short circuit caused by the contact between the negative electrode tab and the aluminum shell due to vibration in the later stage of production, transportation, and use. The traditional tab bending is manual operation; the improved technical solution is as described in CN203917501U and CN201820826U, the two-folding scimitars are arranged on both sides of the tabs, and the blades of the two-folding scimitars are set in a high and low position. During the bending operation, the two bending knives move towards each other, and are sequentially stamped to form a folded S or Z-shaped negative electrode tab. The dif...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B21D5/16B21D43/00F16F15/04H01M2/26H01M50/531
CPCB21D5/16B21D43/003F16F15/04H01M50/531Y02E60/10
Inventor 张勇蒋濛胡庆波
Owner LINKDATA NEW ENERGY CO LTD