Battery system current abnormal change detection method

• Main Authors: YAN GUOGANG, LI CHUN, CHEN TAO, JU DUHU, ZHANG JIANLI, XUE KAIZHE, XIONG JINFENG, FANG LANLAN
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a battery system current abnormal change detection method, which comprises the following steps of: acquiring the voltage of a battery monomer in a battery system by adopting a battery management system, establishing a dynamic data acquisition model, identifying the highest monomer voltage and the lowest monomer voltage from all battery cells in the battery system, and determining the current abnormal change of the battery system according to the identified battery monomer information. In the discharging or charging process of the battery system, the voltage change condition is tracked in real time, the current abnormity is detected, and corresponding processing is carried out according to the single voltage change. Whether the current change in the operation process of the battery system is consistent with the overall operation condition of the battery system is judged. In the charging and discharging process, the change condition of the single voltage can fully reflect the working sta