锂离子电池电箱泡水不触电研究报告

Research Report of No Electric Shock When Li-ion Battery Pack in Water

电动汽车用锂离子电池电箱电压通常为20V到600V，超过安全电压。泡水中的工程模型推导和试验验证，双腿之间的跨步电压都不超过安全电压，即不触电。原因一是在水中，靠水体电阻导电类似导体平面将电压接近，听以跨步电压不大：原因二是当一务腿在水中，一条腿在岸上。大地的大电容迅速实现电压跟随．跨步电压在短时间缩小到安全电压值以内。

EV used Li Ion Battery Pack had DC voltage from 20V to 600V, the voltage is higher than safety voltage. My study of engineering models and experiments of EV in water showed： the step voltage was not exceed the safety voltage, it means No electrical shock risk from the Li-ion Battery Pack. Reason 1： People in water, the step voltage was limit value because water＇s electrical conductivity. Reason 2： One leg in water and another leg at land, the step voltage went down quickly in very short time because land was a big capacity so the voltage was followed up very quickly.