整流器是一个整流装置，简单的说就是将交流（AC）转化为直流（DC）的装置。整流器有两个主要功能：第一，将交流电（AC）变成直流电(DC)，经滤波后供给负载，或者供给逆变器；第二，给蓄电池提供充电电压。因此，它同时又起到一个充电器的作用(Rectifier is a rectifier device, simply put is the AC into DC device. The rectifier has two main functions: first, the alternating current becomes a direct current , which is filtered and supplied to a load or to an invert; and second, a charging voltage is provided to the battery. Therefore, it also acts as a charger)