The 2KW car mounted ACDC charger is a small volume, high-efficiency, intelligent, fully digital integrated charging machine specially designed for new low-speed lithium-ion pure electric vehicles, electric motorcycles, electric forklifts, on-site work vehicles, large and medium-sized electric tools, and new energy tourism and sightseeing vehicles. Adopting a modular and standardized design approach, and adopting a new generation of phase-shifting and width modulation zero voltage zero current control soft switching technology, the system has strong stability, high conversion efficiency, and peak efficiency can reach over 96%. It has multiple protection functions such as overvoltage, undervoltage, overcurrent, undervoltage, over temperature, low temperature, and reverse. It can be assembled as a single unit and installed in the front and rear compartments of new energy vehicles, directly connected to household AC power, or combined with 600W on-board DCDC modules to form a two in one product for micro vehicles.