The invention discloses an equalization and micro short circuit detection method of a power battery pack. The method comprises the following steps: (1) collecting terminal voltage and temperature of each single battery of the power battery pack in real time; (2) judging whether the terminal voltage of a single battery in the power battery pack conforms to an equalization judgment condition or not,if so, starting an equalization method and entering the next step (3), and if not, directly entering the next step (3); and (3) judging whether the terminal voltage and the temperature of the singlebattery in the power battery pack meet the judgment condition of the micro short-circuit fault, if so, carrying out starting protection and micro short-circuit fault early warning, and if not, returning to the step (1). Whether the power battery pack needs to start equalization or not can be judged through the terminal voltage of the single batteries, and whether micro short circuit exists in thesingle batteries in the power battery pack or not is judged through the terminal voltage and temperature of the single batteries.
本发明公开了一种动力电池组的均衡与微短路检测方法,(1)实时采集动力电池组每一节单体电池的端电压和温度;(2)判断动力电池组中单体电池的端电压是否符合均衡的判定条件,若符合均衡的判定条件,则启动均衡方法并进入下一步(3),若不符合则直接进入下一步(3);(3)判断动力电池组中单体电池的端电压和温度是否符合微短路故障的判定条件,若符合微短路故障的判定条件,则进行启动保护和微短路故障预警,若不符合则返回第一步(1)。本发明可通过单体电池的端电压判定动力电池组是否需要启动均衡,通过单体电池的端电压和温度判断动力电池组中是否有单体电池存在微短路。
Equalization and micro short circuit detection method of power battery pack
一种动力电池组的均衡与微短路检测方法
2020-08-04
Patent
Elektronische Ressource
Chinesisch
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