Aging method of lithium ion battery cell

A lithium-ion and battery technology, applied in the aging field of lithium-ion batteries after liquid injection, can solve the problems of prolonging the battery production cycle, reducing production efficiency, and long aging time, so as to speed up full contact and shorten the manufacturing cycle , Good wetting effect

Active Publication Date: 2020-02-14
ZHUHAI COSMX BATTERY CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, the traditional aging process requires a long aging time, which reduces the production efficiency, prolongs the production cycle of the battery, and increases the cost of the entire production process

Method used

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  • Aging method of lithium ion battery cell
  • Aging method of lithium ion battery cell
  • Aging method of lithium ion battery cell

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Embodiment Construction

[0032] In order to make the above and other objects, features and advantages of the present invention more obvious, the following specifically cites the embodiments of the present invention and describes them in detail as follows.

[0033] The battery cell that has been filled with liquid needs to be aged, and the aging of the battery cell is a process that makes the electrolyte in the battery cell fully infiltrate the winding core. In order to shorten the time required for cell aging, the basic idea of ​​the method of the present invention is: on the one hand, the cell is placed on a support platform that can vibrate up and down, and the cell is in the motion of vibrating up and down during the aging process. To accelerate the infiltration speed of the electrolyte; on the other hand, at the same time, the battery is placed in a closed cavity, and the negative pressure environment formed in the closed cavity is used to reduce the resistance of the electrolyte infiltration, impr...

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PUM

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Abstract

The invention relates to an aging method of a lithium ion battery cell, which comprises the following steps: vertically placing a battery cell after liquid injection in a manner that an air bag facesupwards, and placing the battery cell in a closed cavity; adjusting the pressure in the closed cavity to enable the interior of the closed cavity to be in a negative pressure state; vibrating the battery cell up and down, and aging the battery cell through vibration; and stopping the vibration of the battery cell and keeping standing to finish aging. According to the method disclosed by the invention, negative pressure and mechanical vibration are simultaneously introduced in the aging process of the battery cell, so that a wound core pole piece can be infiltrated by the electrolyte more quickly, the manufacturing period of the battery cell can be shortened, and the manufacturing cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of manufacturing lithium-ion batteries, and in particular relates to an aging method for lithium-ion batteries after liquid injection. Background technique [0002] Aging is an important process after cell injection, and the aging effect directly affects the performance of the cell. At this stage, the aging process adopted by most battery manufacturers is to let the battery core stand still for dozens of hours at a certain temperature, so that the electrolyte can fully infiltrate the winding core. However, the traditional aging process requires a long aging time, which reduces the production efficiency, prolongs the production cycle of the battery, and increases the cost of the entire production process. Therefore, how to age the battery more effectively and complete the aging process in a short period of time is an urgent problem to be solved at present. Contents of the invention [0003] The object of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058
CPCH01M10/058Y02E60/10Y02P70/50
Inventor 滕博李扬黄官亮
Owner ZHUHAI COSMX BATTERY CO LTD
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