Design and construction of protection and monitoring battery management system (BMS) on electric motorcycle based on ESP32.

Lithium batteries are starting to become a significant commodity in the rapidly growing electric vehicle industry. Along with the increasing number of battery requirements, the use of lithium batteries is also increasingly diverse. The rising number of battery requirements makes the battery must be adapted to various conditions in the field so that the battery life is long and the battery condition is maintained. The safety and battery life will be problematic if these conditions are not supported. A Battery Management System (BMS) exists to overcome this. In this research, BMS has two main features, namely protection and monitoring. Identification in this study is based on the problem of voltage protections in lithium batteries and monitoring the voltage of each battery cell as measured by a multimeter. A BMS nowadays knows that few have added features such as wireless monitoring using Bluetooth in one BMS module. The results of the BMS testing for monitoring the total voltage when charging have an accuracy of 96.63%, and the BMS testing for monitoring the cell voltage when charging has an accuracy of 98.93%. While the results of the BMS testing for monitoring cell voltage when discharging have an accuracy of 95.07%, and BMS testing for monitoring cell voltage when discharging has an accuracy of 96.59%. The protection features function well to overcome overcharge and over-discharge. The results of the BMS testing for monitoring the total voltage when charging have a precision of 0.84%, and the BMS testing for monitoring the cell voltage when charging has a precision of 0.42%. While the results of the BMS testing for monitoring cell voltage when discharging have a precision of 0.7%, and BMS testing for monitoring cell voltage when discharging has a precision of 0.94%. The successful development of this BMS will increase the value of developing the battery industry in Indonesia. [ABSTRACT FROM AUTHOR]