模拟电阻保险丝的熔断，当电流超过额定电流值，继电器就会断开，断开电路，保护电路- Analog resistive fuse blows, when the current exceeds the rated current value, the relay will disconnect, disconnect circuit protection circuit

单片机控制PWM输出实现控制电子负载，并通过I2C跟adc通信完成对电流的采集，从而测出电池组的最大保护电流值-By SCM PWM output for control of electronic load, and the completion of the current collection with adc through I2C communication, thereby measure the current value of the maximum protection of