SMT-S17S40M-SMTV1.0 battery management system is a power battery management system developed by Shenzhen Smart Electronics Co., Ltd. for 17 series electric motors. It realizes insulation fault protection, overcharge, overdischarge, charge over-current, discharge over-current, discharge short circuit, high and low temperature protection and alarm functions. The intelligent balance function can effectively improve the cycle life of the battery pack. It can be measured by real-time monitoring of voltage, current and temperature The battery capacity can be calculated and displayed by LED; it has the function of history record, which is convenient to trace; can interface can be connected with the upper computer to monitor the battery information in real time; firmware can be upgraded through can interface