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Aluminum-plastic film punching structure and method for a soft-pack lithium-ion battery

A lithium-ion battery and ion battery technology, applied in the field of aluminum-plastic film punching, can solve the problems of less adjustment factors, reduced design space, and limited adjustment range

Active Publication Date: 2020-10-30
XIAN SAFTY ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the adjustment of the concave-convex structure gap and rounded corners will reduce the design space in the width and thickness directions, the existing shell punching method has the disadvantages of fewer adjustment factors and limited adjustment range

Method used

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  • Aluminum-plastic film punching structure and method for a soft-pack lithium-ion battery
  • Aluminum-plastic film punching structure and method for a soft-pack lithium-ion battery
  • Aluminum-plastic film punching structure and method for a soft-pack lithium-ion battery

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Experimental program
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Effect test

Embodiment 1

[0037] Such as image 3 with Figure 5 As shown, the aluminum-plastic film punching structure of a soft-packed lithium-ion battery according to the present invention includes a lower template 2 and an upper template 1 fixedly connected with the lower template 2, and the aluminum-plastic film 3 is fixed on the upper template 1 and the lower template 2, the bottom surface of the upper template 1 is provided with a groove 6 for punching and shaping the aluminum-plastic film 3, and the lower template 2 is provided with a through hole 5 passing through the lower template 2 at a position directly below the groove 6. The bottom of the template 2 is provided with a high-pressure compressed gas bottle 4 communicating with the through hole 5 .

[0038] It should be noted that the number of through holes 5 is provided in multiples, and the plurality of through holes 5 are evenly arranged on the lower template 2 at the position directly below the groove 6, and the bottom surface of the u...

Embodiment 2

[0048] Such as Figure 4 with Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the side of the lower formwork 2 close to the groove 6 is provided with a memory rubber bag 7 communicating with the through hole 5 .

[0049] In this embodiment, the memory rubber bag 7 is a hollow elastic memory rubber bag.

[0050] It should be noted that the memory rubber bag 7 is made of plastic material, and the memory rubber bag 7 is filled with the high-pressure gas output from the high-pressure compressed gas cylinder 4. The purpose is to make a deformable punch instead of the original rigid punch 8 Before the high-pressure compressed gas cylinder 4 is opened, the memory rubber bag 7 shrinks into the lower template 2, which occupies a small volume and is compressible. After the high-pressure compressed gas cylinder 4 is opened, the high-pressure gas enters the memory rubber bag 7 through the through hole 5, pushing The stretching and expansion of the mem...

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Abstract

The invention discloses a shell punching structure and method for an aluminum-plastic film of a soft-packed lithium-ion battery. The structure includes a lower template and an upper template fixedly connected with the lower template, the aluminum-plastic film is fixed between the upper template and the lower template, and the upper template The bottom surface of the lower template is provided with a groove for punching and shaping the aluminum-plastic film, and the lower template is provided with a through hole directly below the groove. bottle; the method includes steps: 1. installation of the aluminum-plastic film shell structure of the soft-pack lithium-ion battery; 2. formation of a non-rigid driving body; The invention exerts tensile force on the aluminum-plastic film through a non-rigid pusher, avoids the relative movement of the punch and the template, and uses the shape of the groove inner cavity to determine the punching structure of the aluminum-plastic film, and the punching depth is deeper, solving the problem of the soft pack battery shell Deep molding is prone to breakage, broken shell problems.

Description

technical field [0001] The invention belongs to the technical field of aluminum-plastic film punching, and in particular relates to a shell punching structure and method for an aluminum-plastic film of a soft-packed lithium-ion battery. Background technique [0002] The shell of the soft-packed lithium-ion battery is a thin and soft aluminum-plastic composite film, and the aluminum-plastic composite film becomes a shell with a concave shape after a stamping process. Energy storage materials such as battery materials are sealed into the pit shape of the casing, and the depth of the pit defines the maximum capacity of the battery. The excellent punching method has the characteristics of stamping and forming deeper pits with the same thickness of aluminum-plastic packaging film materials. Conventional battery case forming methods, see figure 1 , the structural schematic diagram of the punching shell structure in the prior art, first use the upper and lower metal plates with p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02H01M10/058B21D22/12B21D22/20H01M50/116
CPCH01M10/058B21D22/12B21D22/20H01M50/116Y02E60/10Y02P70/50
Inventor 高羿李峰谭晓兰王宏宇田菲
Owner XIAN SAFTY ENERGY TECH
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