Construction method for lithium battery health life model

A construction method and technology for lithium batteries, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as difficult to obtain effective capacity information of lithium batteries
CN106526486AActive Publication Date: 2017-03-22ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Publication Date
2017-03-22

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Abstract

The invention discloses a construction method for a lithium battery health life model, and the method is used for the recognition of the aging degree of a lithium battery. The method comprises the steps: firstly carrying out the health lift testing of the lithium battery; secondly constructing the health factor of the lithium battery according to the testing data; thirdly building the lithium battery health life model according to the constructed health factor, thereby achieving the prediction of the health state of the lithium battery; fourthly sequentially carrying out the testing of basic performances at four temperature points (25 DEG C, 40 DEG C, 10 DEG C and 55 DEG C) during the testing of the health life; fifthly carrying out the acceleration aging testing at the degree of 55 DEG C; and finally finishing the testing when the static capacity test value decreases to 75% of a rated capacity. The method carries out the direct obtaining of the performance parameters of the lithium battery based on testing data, carries out the research how to extract the health features to achieve the recognition of the aging degree of the lithium battery, and can be used for achieving the prediction of the health state of the lithium battery.
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Description

technical field

[0001] The invention relates to the field of lithium batteries, in particular to a method for constructing a lithium battery healthy life model, which is applied to the identification of the aging degree of lithium batteries. Background technique

[0002] Lithium-ion batteries (referred to as lithium batteries) gradually replace lead-acid, nickel-metal hydride, nickel-cadmium and other batteries with the advantages of light weight, small size, long life, high voltage, and no pollution, and become the first choice for electric vehicle power batteries. When the charging capacity of the automobile lithium battery pack is reduced to about 80% of its original capacity, it is no longer suitable for continued use in electric vehicles. If these lithium battery packs are scrapped for recycling and cannot be fully utilized, it will cause Great waste of resources. When the appearance of the lithium battery is intact, there is no damage, and the functional components ar...

Claims

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