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Lithium ion battery liquid injection method

A lithium-ion battery and liquid injection technology, which is applied in the direction of secondary batteries, battery electrodes, battery components, etc., can solve the problems of waste of production time, complicated manufacturing process, high technical requirements, etc., to save energy, improve production efficiency, stressful effect

Pending Publication Date: 2022-03-04
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0002] As an energy storage device with excellent performance, lithium-ion batteries have been widely used in various fields of social life. Its technical requirements are high, the manufacturing process is complicated, and the production cycle is long.
The current collectors of the positive and negative electrodes of traditional lithium-ion batteries are aluminum foil and copper foil respectively, and the liquid injection method generally adopts gas pressurized liquid injection. Shelve at high temperature for 12-48 hours, which not only wastes valuable production time, but also causes greater energy consumption

Method used

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Embodiment Construction

[0017] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following specific embodiments.

[0018] Unless otherwise defined, all technical terms used hereinafter have the same meanings as commonly understood by those skilled in the art. The terminology used herein is only for the purpose of describing specific embodiments, and is not intended to limit the protection scope of the present invention.

[0019] Unless otherwise specified, the various reagents and raw materials used in the present invention are commercially available products or products that can be prepared by known methods.

[0020] step 1:

[0021] Electrode preparation: Porous aluminum foil and copper foil are used as current collectors for positive and negative electrodes respectively. The preparat...

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Abstract

The invention discloses a simple and effective liquid injection method for a lithium ion battery. By adopting the porous current collector and the isostatic pressing liquid injection technology, the permeation rate of the electrolyte in the electrode micropores is effectively improved, the high-time-consumption and high-energy-consumption standing procedure after the traditional liquid injection procedure is avoided, and the manufacturing period of the lithium ion battery is shortened.

Description

technical field [0001] The invention belongs to the field of lithium-ion battery manufacturing, in particular to a method for improving the liquid injection efficiency of the lithium-ion battery through an isostatic pressing technique. Background technique [0002] As an energy storage device with excellent performance, lithium-ion batteries have been widely used in various fields of social life. Its technical requirements are high, the manufacturing process is complicated, and the production cycle is long. The current collectors of the positive and negative electrodes of traditional lithium-ion batteries are aluminum foil and copper foil respectively, and the liquid injection method generally adopts gas pressurized liquid injection. Shelve at high temperature for 12-48 hours, which not only wastes valuable production time, but also causes greater energy consumption. Contents of the invention [0003] The present invention provides a new liquid injection method for lithiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/609H01M4/80H01M4/66H01M10/058H01M10/44
CPCH01M50/609H01M4/80H01M4/661H01M10/058H01M10/446Y02E60/10Y02P70/50
Inventor 倪文浩杨建文黄斌刘鑫鑫李欣泽贾晓通
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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