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Lithium battery consistency classification method, device, equipment and readable storage medium

A classification method and technology of lithium batteries, applied in lithium batteries, measuring devices, non-aqueous electrolyte batteries, etc., can solve the problems of low accuracy, difficult operation, and differences in dynamic characteristics of lithium batteries, and achieve rapid classification and screening, Guaranteed safety and longevity effects

Active Publication Date: 2021-04-06
BEIJING HYPERSTRONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing lithium battery classification methods cannot characterize the differences in the dynamic characteristics of lithium batteries during actual use, and there are problems of difficult operation and low accuracy.

Method used

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  • Lithium battery consistency classification method, device, equipment and readable storage medium
  • Lithium battery consistency classification method, device, equipment and readable storage medium
  • Lithium battery consistency classification method, device, equipment and readable storage medium

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Embodiment Construction

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055] It should be understood that in various embodiments of the present invention, the sequence numbers of the processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, rather than by the implementation order of the embodiments of the present invention. ...

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PUM

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Abstract

The invention provides a lithium battery consistency classification method, device, equipment and readable storage medium, by obtaining the charge expansion force curve of the lithium battery to be tested, and the charge expansion force curve is used to indicate the expansion of the lithium battery to be tested The change relationship between the force and the charging capacity; according to the charging expansion force curves of a plurality of lithium batteries to be tested, obtain the corresponding characteristic value of each lithium battery to be tested, wherein the characteristic value is used to indicate the lithium battery to be tested Consistency between expansion force and charging capacity; perform consistency classification according to the characteristic values ​​corresponding to the multiple lithium batteries to be tested, and obtain the consistency classification of each lithium battery to be tested, so as to realize rapid Classify and screen, and classify lithium batteries with similar battery capacity and expansion force into the same category, thereby ensuring the safety and service life of the battery pack.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a lithium battery consistency classification method, device, equipment and readable storage medium. Background technique [0002] Lithium iron phosphate battery refers to a lithium ion battery that uses lithium iron phosphate as the positive electrode material. Due to its high specific energy, lithium batteries are widely used in 3C digital, smart home appliances, smart cities, electric tools, electric vehicles, wind turbine solar energy storage power stations, mobile communication base stations, radio stations, satellite launches and other fields. In practical applications, lithium batteries mostly exist in the form of battery packs, which requires lithium batteries in the same battery pack to have high consistency. Due to battery raw materials, manufacturing equipment precision, and process technology, there are some performance differences between individual lithium batteri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/052H01M10/44G01L5/00G01R31/367G01R31/387G01R31/396G06K9/62
CPCH01M10/052H01M10/44G01R31/396G01R31/387G01R31/367G01L5/0028G06F18/241Y02E60/10
Inventor 吕喆陈喆王垒戚送送
Owner BEIJING HYPERSTRONG TECH