Plug-in right-time all-wheel-drive hybrid electric vehicle system

The invention discloses a plug-in right-time all-wheel-drive hybrid electric vehicle system, which comprises a whole control unit, a power battery, a management system of the power battery, an engine and a controller of the engine, a starting/electric generator and controller thereof, a rear drive motor and a controller thereof, 5-gear and 2-gear automatic transmission and a controller and an inverter device. The whole control unit controls a whole power system to coordinate work, the rear drive motor drives rear wheels of a vehicle through the 2-gear automatic transmission, and the engine drives front wheels of the vehicle through a clutch and the 5-gear automatic transmission, thereby achieving operating modes such as right-time all-wheel drive and regenerative brake and the like. The plug-in right-time all-wheel-drive hybrid electric vehicle system adds the 2-gear automatic transmission, improves whole power and running efficiency, and the starting/electric generator can rapidly start the engine and also can drive the engine to generate. The plug-in right-time all-wheel-drive hybrid electric vehicle system achieves switching between various work modes, meets the demands of vehicle power, controllability and stability, passing ability and economical efficiency and the like, improves efficiency of the rear drive motor, and further improves whole energy use ratio.