The motor controller is a device that can make the motor complete the required movement in a predetermined control mode, and adjust it to the state required by the main control system in the shortest time and with the least energy consumption. Its typical controls include motor start and stop, steering, speed, angle/position, torque/force, etc. It also has communication, protection and status monitoring functions. Motor control technology is widely used in power tools, garden tools, industrial control fields, electric vehicles, etc.

For lithium batteries, overcharge, over-discharge, over-voltage, over-current, etc. will cause battery abnormalities and affect battery life and safety. The lithium battery protection board detects the voltage, charge and discharge current, and temperature of each battery to protect the battery from overcharge, overdischarge, short circuit, overtemperature, and disconnection.

The basic function of a lithium battery charger is to charge the battery pack with a specific charging current and charging voltage to ensure battery safety. Other charging auxiliary functions are added to improve battery life and simplify charger operation, including trickle charging for over-discharged batteries, battery voltage detection, input current limit, charger shutdown after charging is completed, and automatic charging after the battery is partially discharged. Start charging, etc.