Battery short circuit detection method, device and storage medium

CN116008836BActive Publication Date: 2026-07-24DR OCTOPUS INTELLIGENT TECH (SHANGHAI) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DR OCTOPUS INTELLIGENT TECH (SHANGHAI) CO LTD
Filing Date
2022-12-01
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies have low sensitivity in identifying internal short circuits. Traditional methods are not easy to detect the characteristics in the early stage of internal short circuits, and the characteristic peaks in the high SOC range cannot be utilized, resulting in inaccurate internal short circuit detection results.

Method used

By acquiring standard monitoring data from N battery charging cycles, the incremental capacity of charging cycles A and B is determined, the short-circuit resistance is calculated, and the short-circuit condition of the battery is judged based on the short-circuit resistance. In particular, monitoring is carried out in the high SOC range to improve the accuracy of identification.

Benefits of technology

It improves the sensitivity of internal short circuit detection, reduces computing power requirements, and achieves fast and accurate internal short circuit identification.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a short circuit detection method and device of a battery and a storage medium. The application obtains standard monitoring data of N charging processes of the battery; determines an incremental capacity of an A charging process and an incremental capacity of a B charging process based on the standard monitoring data, wherein N is a natural number greater than 2, and A and B are natural numbers greater than N; determines a short circuit resistance according to the incremental capacity of the A charging process and the incremental capacity of the B charging process, and determines a short circuit condition of the battery according to the short circuit resistance. Thus, the problem that the integral area calculation of the incremental capacity curve of the internal short circuit is inaccurate, resulting in inaccurate internal short circuit detection results, can be effectively solved.
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