The paper puts forward a new method to measure series battery voltage, mechanical relay is replaced by photoelectric relay 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；
Set signal pressure gauge pressure gauges, photoelectric sensors, electronic switches and circuit relay as one small, compact bodies, easy to use, safe and reliable.
电信号压力表集压力表、光电传感器、电子开关电路和小型继电器为一体，机构紧凑，使用方便，安全可靠。
Set signal pressure gauge pressure gauges, photoelectric sensors, electronic switches and circuit relay as one small, compact bodies, easy to use, safe and reliable.
电信号压力表集压力表、光电传感器、电子开关电路和小型继电器为一体，机构紧凑，使用方便，安全可靠。
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