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Finished cell stage screening method

A battery cell and finished product technology, which is applied in the field of finished battery cell screening, can solve the problems of production line confusion, manpower and material resources consumption, etc.

Inactive Publication Date: 2020-07-07
天臣新能源(渭南)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing process, after three OCV tests (formation, capacity separation, and sorting), there are a small number of batteries that need to be reworked, resulting in multiple production states of the same batch of batteries, causing confusion in the production line, and consuming manpower and material resources

Method used

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Embodiment Construction

[0013] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0014] This patent provides a variety of parallel schemes, and the different expressions belong to the improved scheme based on the basic scheme or the parallel scheme. Each scheme has its own unique characteristics.

[0015] In this patent, when the screening principle is consistent, the OCV1 detection is adjusted to 5-7 days before the aging, and the defective cells are directly screened for rework. The reworked cells can be synchronized with the normal batch after aging; Modify the test range of OCV2 after capacity division and set it to the voltage range of 5-7 days of aging after formation to achieve the purpose of only testing the voltage without screening and r...

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Abstract

The invention relates to the field of cells, in particular to a finished cell stage screening method. The OCV is directly detected after batch formation, and unformed cells are reworked. The purposesof improving automatic production and achieving the optimum performance of cells are achieved by adjusting the sequence of the technological processes and optimizing technological parameters. Formation is the important technological process of improving the cell performance. After mass formation, the OCV is directly detected, and the unformed cells are reworked. The situation that formation of part of cells is overtime and the performance is affected through original technological processes is avoided. During capacity grading, the capacity of the cells is detected and basically has no influence on the performance of the cells. By changing OCV2 / OCV3 parameters, only voltage is measured during OCV2. During OCV3, the cells without reflecting the capacity are screened again and then are gradedaccording to the capacity, and finally, the automation degree is maximized.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a method in the screening stage of finished batteries. Background technique [0002] In the existing process, after three OCV tests (formation, capacity separation, and sorting), there are a small number of batteries that need to be reworked, resulting in multiple production states of the same batch of batteries, causing confusion in the production line, and consuming manpower and material resources. Contents of the invention [0003] Purpose of the invention: In order to provide a method for the screening stage of finished battery cells with better effect, the specific purpose is shown in the multiple substantive technical effects in the specific implementation part. [0004] In order to achieve the above object, the present invention takes the following technical solutions: [0005] The method for the screening stage of finished electric cores is characterized in that it comprises t...

Claims

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Application Information

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IPC IPC(8): B07C5/344
CPCB07C5/344
Inventor 王旭黄金辉赵冲杨旭斌
Owner 天臣新能源(渭南)有限公司
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