Diode module, also known as rectifier module, is a device that converts alternating current (AC) into direct current (DC). It has two main functions: converting alternating current (AC) into direct current (DC), filtering it and supplying it to the load, or supplying it to the inverter; Secondly, provide charging voltage to the battery. When the charging current of the battery reaches this value, the current will no longer rise, playing a role in protecting the battery pack. Its main purpose is to directly rectify AC power sources into smoother DC power.