Battery life determination method, apparatus, electronic device, and storage medium

By employing multiple linear judgment processes and combining the linear relationship between the differential capacity curve and the capacity decay value, the lifespan of lithium-ion batteries can be accurately determined, solving the problem of low accuracy in existing technologies and improving the accuracy of lithium-ion battery lifespan determination.

CN122193979APending Publication Date: 2026-06-12BATTERO TECH CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BATTERO TECH CORP LTD
Filing Date
2022-10-31
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In existing technologies, the methods for determining the cycle life of lithium-ion batteries have low accuracy because lithium plating abnormalities cause the capacity retention rate to not satisfy the linear relationship with the number of battery cycles.

⚗Method used

Through at least one linear judgment process, it is determined whether the differential capacity curve and the capacity decay value satisfy the linear relationship. If they do not satisfy the linear relationship, the charge and discharge cycle continues until the linear relationship is satisfied. Then, the battery life is determined according to the second linear relationship.

🎯Benefits of technology

It improves the accuracy of lithium-ion battery life determination, reduces low-current calibration test time, and enhances accuracy under abnormal lithium plating conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a battery life determination method and device, electronic equipment and a storage medium. The method comprises at least one linear judgment process and a life determination process. One linear judgment process comprises: performing a charge-discharge cycle on a battery to be measured; determining a differential capacity curve and a capacity attenuation value of the battery to be measured at different preset cycle numbers; if the differential capacity peak value of the differential capacity curve and the preset cycle number satisfy a first linear relationship, and the capacity attenuation value and the preset cycle number do not satisfy a second linear relationship, the next linear judgment process is performed; if the differential capacity peak value and the preset cycle number satisfy the first linear relationship, and the capacity attenuation value and the preset cycle number satisfy the second linear relationship, the cycle number corresponding to the capacity attenuation threshold value of the battery to be measured is determined according to the second linear relationship, so as to determine the life of the battery to be measured. The technical scheme of the embodiment of the application improves the accuracy of battery life determination.
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