The embodiment of the invention provides a vehicle battery assembly monitoring method and device, the battery assembly comprises a plurality of battery cells, and the method comprises the following steps: after a vehicle travels for a certain mileage, carrying out high-frequency pulse charging and discharging on the battery cells; during the high-frequency pulse charging and discharging period, collecting temperature rise data of each battery cell; according to the temperature rise data, generating a current temperature characteristic value corresponding to each battery cell; when it is monitored that the current temperature characteristic value is abnormal, determining that the battery assembly has the thermal runaway risk. According to the method of the invention, internal short-circuit self-detection is actively and regularly carried out on the vehicle battery assembly without newly adding parts, high-frequency pulse charging and discharging are adopted, the safety and performance of the battery assembly are not influenced, the influence of short-circuit resistance can be amplified, and the identification effectiveness is improved.
本发明实施例提供了一种车辆电池组件监测和装置,所述电池组件包括多个电芯,所述方法包括:在所述车辆行驶一定里程后,对所述电芯进行高频脉冲充放电;在所述高频脉冲充放电期间,采集各个电芯的温升数据;依据所述温升数据,生成各个电芯对应的当前温度特征值;当监测到所述当前温度特征值异常时,确定所述电池组件存在热失控风险。通过本发明实施例在无需新增零部件,实现主动、定时对车辆电池组件进行内短路自检测,并且采用高频率的脉冲充放电,对电池组件安全、性能无影响能放大短路电阻的影响,提高识别有效性。
Vehicle battery assembly monitoring method and device
一种车辆电池组件监测方法和装置
2021-08-24
Patent
Elektronische Ressource
Chinesisch
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