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Device and method for negative pressure formation of soft-pack lithium-ion battery

A technology of lithium-ion batteries and ion batteries, applied in secondary batteries, electrochemical generators, secondary battery repair/maintenance, etc., can solve problems affecting battery performance, gas in soft-packed lithium-ion batteries, affecting SEI film formation, etc. problems, to achieve the effect of improving battery performance

Active Publication Date: 2021-08-10
海口安博尔能源技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The soft-pack lithium-ion battery will release gas during the formation process, which will cause too much gas inside the soft-pack lithium-ion battery. The gas generated in the ordinary formation process cannot be discharged in time, and will be trapped in the positive and negative electrodes inside the battery. The accumulation between the separator and the separator will affect the formation of the SEI film, which will seriously affect the performance of the battery

Method used

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  • Device and method for negative pressure formation of soft-pack lithium-ion battery
  • Device and method for negative pressure formation of soft-pack lithium-ion battery

Examples

Experimental program
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Effect test

no. 1 example

[0041] see figure 1 and figure 2 , this embodiment provides a device 100 for negative pressure formation of soft-pack lithium-ion batteries, including:

[0042] The upper cavity 121 and the lower cavity 122 arranged opposite to the upper cavity 121 have an accommodation space 120 between the upper cavity 121 and the lower cavity 122, and the upper cavity 121 can be selectively close to or far away from the lower cavity 122 to control Sealing or opening of the accommodation space 120;

[0043] The first driving member 123 is connected to the upper cavity 121, and is used to drive the upper cavity 121 to approach or move away from the lower cavity 122 to control the sealing or opening of the accommodation space 120;

[0044]The tray 112 and the pressing plate 111 arranged in the accommodation space 120, the tray 112 and the pressing plate 111 are arranged oppositely, and a clamping space for clamping the lithium-ion battery is formed between the pressing plate 111 and the tra...

Embodiment 2

[0064] A method for negative pressure formation of a soft pack lithium-ion battery, characterized in that it comprises the steps of:

[0065] Put the soft-pack lithium-ion battery 210 into the clamping space on the device 100 for negative pressure formation of the soft-pack lithium-ion battery provided in Embodiment 1;

[0066] Control the height of the clamping space so that the soft pack lithium-ion battery 210 is clamped in the clamping space, and maintain the clamping height;

[0067] Clamp the positive and negative poles of the soft-pack lithium-ion battery 210 with wire clips, and cut open the airbag 220 of the soft-pack lithium-ion battery 210;

[0068] Control the relative distance between the upper cavity 121 and the lower cavity 122, make the accommodating space 120 in a sealed state, extract the gas in the sealed cavity, and make the sealed cavity in a negative pressure state;

[0069] When the vacuum value in the sealed chamber reaches the set value, the soft-pack...

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Abstract

The invention provides a device and method for negative pressure formation of a soft-pack lithium-ion battery, and relates to the field of lithium-ion batteries. It includes: an upper cavity and a lower cavity opposite to the upper cavity. There is an accommodation space between the upper cavity and the lower cavity. The upper cavity can be selectively close to or the lower cavity to control the sealing or opening of the accommodation space; The first driving member is connected to the upper cavity, and is used to drive the upper cavity to approach or leave the lower cavity to control the sealing or opening of the accommodation space; the tray and the pressing plate are arranged in the accommodation space, the tray and the pressing plate are arranged oppositely, and the pressing plate and the pressing plate A clamping space for clamping the lithium-ion battery is formed between the trays; the second drive member is respectively connected to the upper cavity and the pressure plate, and is used to drive the pressure plate close to or away from the tray to control the height of the clamping space; the sealing mechanism is set on In the accommodation space, it is used to seal the soft pack lithium-ion battery; the vacuum device is connected to the accommodation space to provide negative pressure for the accommodation space.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a device and method for negative-pressure formation of soft-pack lithium-ion batteries. Background technique [0002] The soft-pack lithium-ion battery will release gas during the formation process, which will cause too much gas inside the soft-pack lithium-ion battery. The gas generated in the ordinary formation process cannot be discharged in time, and will be trapped in the positive and negative electrodes inside the battery. The accumulation between the separator and the separator affects the formation of the SEI film, which will seriously affect the performance of the battery. Contents of the invention [0003] The object of the present invention is to provide a negative pressure forming device for a soft-pack lithium-ion battery, which can discharge the gas inside the battery in time during the formation process of the soft-pack lithium-ion battery. [0004] Another ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44H01M10/0525
CPCH01M10/0525H01M10/446Y02E60/10
Inventor 程建聪谢永健
Owner 海口安博尔能源技术开发有限公司