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Shell punching forming method and device for aluminum film of lithium battery

A forming device and lithium battery technology, which is applied in the field of aluminum film punching and forming, can solve problems such as aluminum layer thickness bottlenecks, and achieve the effects of less material loss, less plastic deformation, and rapid shell forming

Active Publication Date: 2019-04-19
DONGGUAN CHAOYE PRECISION EQUIPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Aluminum film punching forming is an indispensable part of the current production of soft-packed lithium batteries. The speed and quality of punching shells are the current direction of progress; the current aluminum film punching mechanism mostly uses one-time forming, and the stretching depth and stretching of the back shell The thickness of the aluminum layer at the four corners becomes a bottleneck

Method used

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  • Shell punching forming method and device for aluminum film of lithium battery
  • Shell punching forming method and device for aluminum film of lithium battery
  • Shell punching forming method and device for aluminum film of lithium battery

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as Figure 1-4 As shown, a lithium battery aluminum film punching and forming device includes a pre-piercing device A and a shell punching device B arranged along the aluminum film conveying direction; Mechanism, upper platen 1, concave formwork 2, pressure adjustment mechanism 3 and lifting mechanism 4 of jacking pressure adjustment mechanism 3, the stamping mechanism is an air stamping mechanism, the upper platen 1 is provided with vent holes 11, the concave formwork 2. There is an escape space 21.

[0028] The pre-piercing pit device A includes a frame 5, the frame 5 is provided with an upper mold frame 51 and a lower template 52, the upper platen 1 is fixed on the bottom of the upper mold frame 51, and the pressure regulating mechanism 3 is arranged on the top of the lower template 52, The lifting mechanism 4 is used for jacking up the pressure regulating mechanism 3 . When working, the upper mold frame 51 and the upper platen 1 are fixed, and the aluminum fi...

Embodiment 2

[0042] Such as Figure 1-6 As shown, a method for punching and forming the aluminum film of a lithium battery. Firstly, the pre-punching device A is used to pre-pit the aluminum film, so that the aluminum film is deformed. The aluminum film is punched and formed.

[0043] The method for punching and forming the aluminum film of the lithium battery of the present invention first preforms the aluminum film through the pre-punching pit, punches out a deformation pit smaller than the actual punching pit size at the punching pit position, and participates in the plastic deformation of the aluminum film during this process There are many materials, which will not lead to the reduction of the aluminum film material in a certain place, and will not leave obvious plastic deformation boundary lines, which can eliminate the traces of pre-punching during the shell forming process, and will not cause adverse effects on the appearance of the aluminum-plastic film. influences. Because the ...

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Abstract

The invention relates to the technical field of lithium battery aluminum film shell punching forming in lithium ion battery packaging, in particular to a shell punching forming method and device for an aluminum film of a lithium battery. According to the shell punching forming method, a pre-punching device is adopted for pre-punching an aluminum film, so that the aluminum film obtains deformationpits, and then the shell punching forming device is adopted for conducting shell punching forming on the aluminum film at the positions of the deformation pits. According to the shell punching formingmethod for the aluminum film of the lithium battery, the depth of shell punching forming is improved, and the thickness of aluminum layers of four corners is thicker after shell punching forming. Dueto the fact that the aluminum film has a primary drawing foundation through pre-punching, a pit punching depth larger than the pit depth in the pre-punching process can be achieved in the later shellpunching forming process, plastic deformation during the shell punching forming process is less than plastic deformation in the pre-punching process, and more rapid pit punching can be realized.

Description

technical field [0001] The invention relates to the technical field of aluminum film punching and forming in lithium ion battery packaging, in particular to a method and a device for punching and forming an aluminum film of a lithium battery. Background technique [0002] Aluminum film punching forming is an indispensable part of the current production of soft-packed lithium batteries. The speed and quality of punching shells are the current direction of progress; the current aluminum film punching mechanism mostly uses one-time forming, and the stretching depth and stretching of the back shell The thickness of the aluminum layer at the four corners becomes a bottleneck. Contents of the invention [0003] In order to overcome the disadvantages and deficiencies in the prior art, the object of the present invention is to provide a method for punching and forming the aluminum film of a lithium battery, which increases the depth of the punching and forming, and makes the thick...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D33/00H01M2/02H01M10/052H01M50/10
CPCH01M10/052B21D33/00H01M50/10Y02E60/10
Inventor 梁桂庆尤仙富
Owner DONGGUAN CHAOYE PRECISION EQUIPMENT CO LTD
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