Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (hong Kong) Limited

Hui Jia

Jihai Xie

Shaoteng Ren

Hai Zou

Xueyu Zhan

Shuangshi Feng

Jinfu Wang

Yajie Yuan

Yi Qu

The present application discloses a method, apparatus, device, and system for monitoring battery pack safety. The method includes: obtaining, based on obtained stress data of a battery pack in an electric vehicle, stress energy information of the battery pack; determining a target-level alarm condition based on the stress energy information and sending corresponding alarm information, where the target-level alarm condition is a level of alarm condition in preset N levels of alarm conditions that the stress energy information satisfies, an ilevel of alarm condition indicates that there are moccurrences of impact energy represented by the stress energy information that is within an ienergy threshold range, and a lower limit of the ienergy threshold range of the ilevel of alarm condition is greater than an upper limit of an (i−1)energy threshold range of an (i−1)level of alarm condition, and m<m.

Method, apparatus, device, and system for monitoring battery pack safety and storage medium

Embodiments of this application provide a battery management system (BMS) wake-up method, a BMS wake-up apparatus, and a storage medium, and pertains to the field of battery safety technologies. In this application, before a BMS hibernates, a wake-up threshold corresponding to first sampling information is determined based on an obtained extremum of the first sampling information of a battery cell. After the BMS hibernates, a sampling chip collects second sampling information of the battery cell when the BMS is hibernating, and transmits a wake-up signal to the BMS when it is determined that the second sampling information of the battery cell reaches the wake-up threshold. In this way, the BMS can be woken up in a timely manner by the wake-up signal, and therefore the BMS can find battery safety problems in a timely manner.

Battery management system wake-up method, battery management system wake-up apparatus, and storage medium

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Ningde, China

Hui Jia