硬件单体欠压-Hardware cell undervoltage

硬件单体欠压保护参数设置在前端检测芯片中，当保护板程序失效时，前端检测到电池电压达到硬件单体欠压时，前端芯片触发关断放电开关，关断后，只能通过主控芯片恢复正常后解除保护

The hardware unit undervoltage protection parameter is set in the front-end detection chip. When the BMS program fails, when the front end detects that the battery voltage reaches the undervoltage of the hardware unit, the front-end chip triggers the shutdown discharge switch, and after the shutdown, it can only pass the main Unprotect after the control chip returns to normal