Cell aging method

Abstract

Disclosed is a cell aging method. The cell aging method comprises the following steps of taking an electrolyte-injected cell and horizontally putting the cell on a rotatable bearing platform, and enabling an airbag of the cell to face to the center of the bearing platform in a radial direction; enabling the bearing platform to continuously rotate at a first rotary speed v1; enabling the bearing platform to continuously rotate at a second rotary speed v2, wherein v2 is greater than v1; enabling the bearing platform to continuously rotate at the first rotary speed v1; and gradually decreasing the rotary speed of the bearing platform until the bearing platform stops rotating, performing standing on the cell, and taking off the cell after aging is finished. According to the cell aging method, the cell is rotated at a low speed and then at a high speed in the aging process, so that an electrode material can be fully wetted by an electrolyte, a sufficient reaction occasion for the electrochemical reaction of the cell is provided, and the electrolyte retaining amount of the cell is improved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing lithium ion batteries, and in particular relates to a method for aging lithium ion batteries after liquid injection. Background technique [0002] With the continuous development of science and technology and the improvement of people's living standards, the types of electronic products that meet people's life and entertainment needs are becoming more and more abundant, and personalized portable devices are more and more popular among people. From smartphones, tablets, watches to model airplanes and drones, all of them are among the best. With the increasingly fierce market competition and the increasing demands of people, how to stand out from the fierce competition on the basis of meeting people's needs is the focus of many enterprises. Lithium battery is one of the most important hardware in many electronic products. Its performance directly affects the overall performance of electronic ...

AI Technical Summary

Problems solved by technology

At this stage, the aging method adopted by most battery manufacturers is to let the battery cell stand still for dozens of hours or even a few days at a certain temperature, although this can also achieve the basic purpose of cell aging, so that the electrolyte can soak the electrode , the two can be fully contacted, but the longer aging time reduces the production efficiency, prolongs the production cycle of the battery, and increases the cost of the entire production process

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