硬件单体欠压延时-Hardware cell undervoltage delay

当单串电池电压到达硬件单体欠压保护电压，并且持续时间达到此设定时间时，保护板关断放电，发生欠压保护。

When the cell battery voltage reaches the hardware unit undervoltage protection voltage and the duration reaches this set time, the BMS is turned off and undervoltage protection occurs.