The invention discloses an early warning method and an early warning device for battery voltage distribution, and a vehicle, the early warning method is used for a power battery, the power battery comprises a plurality of single batteries, and the early warning method comprises the following steps: obtaining a maximum single voltage and a minimum single voltage in the power battery, and calculating a first voltage difference; calculating the average single voltage of the power battery; calculating a second voltage difference between the voltage of the single battery and the average single voltage; calculating the voltage deviation degree of the corresponding single battery according to the first voltage difference and the second voltage difference; and triggering monomer early warning under the condition that the first voltage difference is greater than or equal to the voltage difference threshold and the voltage deviation degree of the monomer battery meets a first early warning condition.
本发明公开了一种电池电压分布的预警方法、预警装置和车辆,预警方法用于动力电池,动力电池包括多个单体电池,预警方法包括:获取动力电池内最大单体电压和最小单体电压,并计算第一压差;计算动力电池的平均单体电压;计算单体电池的电压与平均单体电压的第二压差;根据第一压差和第二压差计算对应的单体电池的电压偏离程度;在第一压差大于等于压差阈值且单体电池的电压偏离程度满足第一预警条件的情况下,触发单体预警。
Early warning method and early warning device for battery voltage distribution, and vehicle
电池电压分布的预警方法、预警装置和车辆
2020-11-17
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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