公开(公告)号：US20250155513A1

公开(公告)日：2025-05-15

申请号：US18589158

申请日：2024-02-27

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Tai-Hua HSIAO ,  Shih-Hao LIANG ,  Cheng-You HO ,  Zong-Yan WU ,  Yu-Hsiang HUNG

IPC: G01R31/389 ,  G01R31/367 ,  G01R31/3842 ,  G01R31/52 ,  H02J7/00

Abstract: A method for calculating a resistance of an internal short circuit in a battery is provided, which includes the following steps. Multiple voltage-capacity curve samples of a battery under multiple stable current charging and/or discharging conditions are obtained. The charge and/or discharge data of the battery are measured, and the charge and/or discharge data at least includes a charging voltage sequence and a charging current sequence, and/or a discharge voltage sequence and a discharge current sequence. The charge and/or discharge data of the battery is compared with at least one reference curve in the voltage-capacity curve samples to determine whether the battery is charging and/or discharging normally. When the charge and/or discharge data of the battery deviates from the reference curve, a leakage current and a leakage resistance of the battery are calculated.