The paper puts forward a new method to measure series battery voltage, mechanical relay is replaced by photoelectricrelay to select each battery voltage.
提出一种串联电池组电压测量新方法：光电继电器取代机械继电器选通各节电池电压；
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Set signal pressure gauge pressure gauges, photoelectric sensors, electronic switches and circuit relay as one small, compact bodies, easy to use, safe and reliable.