Battery soh detection method and device, master control equipment and storage medium
By measuring the impedance and calculating the impedance growth rate under different battery operating conditions, and combining this with a pre-built correlation, the problem of inaccurate battery SOH detection caused by power lock-in was solved, and a more accurate battery health status assessment was achieved.
CN122410352APending Publication Date: 2026-07-17CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2025-01-16
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
When the battery is locked, its discharge capacity is smaller, which leads to inaccurate SOH detection based on the discharge capacity, thus reducing the accuracy of the detection.
Method used
By determining the battery impedance under different operating conditions, including the first and second impedances under the first operating condition, the impedance growth rate is calculated, and the current SOH of the battery is determined by using the pre-built correlation between the impedance growth rate and SOH, thus avoiding the impact of power lock on the cell impedance.
Benefits of technology
It improves the accuracy of battery SOH detection, ensures accurate assessment of battery health status under power-lock conditions, and reduces errors.
✦ Generated by Eureka AI based on patent content.
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Figure CN122410352A_ABST
Abstract
本申请公开了一种电池的SOH检测方法及其装置、主控设备及存储介质，电池的SOH检测方法，包括：通过确定电池在第一工况下的第一阻抗，第一工况包括第一电池温度及第一SOC；根据电池的第二阻抗及第一阻抗确定阻抗增长率，第二阻抗用于表征电池在第一工况下的标准阻抗；根据第一对应关系及阻抗增长率确定电池的当前SOH，第一对应关系用于表征电池的阻抗增长率与SOH的对应关系。本方法在对电池进行SOH检测的过程中，基于电池的阻抗增长率及预先构建的电池的阻抗增长率与SOH的关联关系，确定电池的当前SOH，提高了对电池进行SOH检测的检测准确性。
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