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A kind of lithium-ion battery repair method

A lithium-ion battery and repair method technology, applied in the field of lithium-ion battery repair, can solve the problems of reduced service life, lithium-ion battery capacity attenuation, etc., to increase the use capacity, widen the use temperature range, improve charging quality and charging efficiency Effect

Active Publication Date: 2022-06-24
青岛能蜂电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of existing lithium-ion batteries with the increase of charging cycles, internal polarization and formation of lithium crystals on the electrode surface, which causes the capacity of lithium-ion batteries to decay and reduce the service life.

Method used

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  • A kind of lithium-ion battery repair method
  • A kind of lithium-ion battery repair method
  • A kind of lithium-ion battery repair method

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Embodiment Construction

[0025] Exemplary embodiments of the present invention will now be described more fully with reference to the accompanying drawings, although each exemplary embodiment can be embodied in various specific forms, it should not be construed that the invention is limited to the embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and fully convey the inventive concept to those skilled in the art.

[0026] The structures, performances, effects or other features described in a particular embodiment may be combined into one or more other embodiments in any suitable manner under the premise of conforming to the technical concept of the present invention.

[0027] In the description of specific embodiments, detailed descriptions of structures, performances, effects or other features are provided to enable those skilled in the art to fully understand the embodiments. However, it does not exclude that those skilled in the ...

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Abstract

The invention discloses a lithium-ion battery repair method, which includes acquiring the electrochemical impedance data spectrum of the lithium-ion battery; acquiring the current state of charge and temperature of the lithium-ion battery; and according to the current state of charge and temperature of the lithium-ion battery, And the electrochemical impedance data of the lithium-ion battery determines the frequency F and duty cycle D of the pulse oscillating current; according to the frequency F and the duty cycle D, the pulse oscillating current is set to charge the lithium-ion battery. Adopting the lithium-ion battery repairing method of the present invention can effectively prolong the service life of the lithium-ion battery, increase the service capacity of the lithium-ion battery, adjust the internal temperature rise of the battery, improve the charging quality and charging efficiency of the lithium-ion battery, and broaden the use of the lithium-ion battery temperature range.

Description

technical field [0001] The present invention relates to the technical field of batteries, in particular, to a method for repairing a lithium ion battery. Background technique [0002] With the rapid development of energy storage technology and new energy vehicles, lithium-ion batteries have been widely used in the field of new energy vehicles and energy storage due to their long service life, environmental protection and safety, high energy density, and good output characteristics. [0003] However, in the normal use process of lithium-ion batteries, they are used as a DC source to charge and discharge with DC current, and such a use method will cause internal polarization and lithium deposition of lithium-ion batteries as the number of charging cycles increases. Phenomenon, resulting in a reduction in the service life of lithium-ion batteries, a reduction in available capacity, and a deterioration in safety. And these problems are especially pronounced when used at low tem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/44
CPCH01M10/4285H01M10/44H01M10/443Y02E60/10
Inventor 耿向真樊成芳
Owner 青岛能蜂电气有限公司
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