Abstract: A reducer housing and an electric drive assembly are disclosed. A liquid cooled heat dissipation structure is provided at a bottom of the reducer housing and/or on a side wall thereof through which lubricating oil flows. The heat dissipation structure includes a coolant tank and a cover plate that seals the coolant tank. Two ends of the coolant tank are respectively provided with a liquid inlet and a liquid outlet. Convex structures and concave structures are alternately provided on the bottom of coolant tank so that inner and outer sides of the bottom of the coolant tank are in a wavy shape to increase a contact area between the coolant tank and the lubricating oil inside the reducer housing.

Abstract: A cooling and lubrication device of an electric drive assembly and an electric drive assembly are disclosed. The cooling and lubrication device includes an oil pumping unit, an oil pumping passage, and an oil returning passage. Outlets of oil distribution passages correspond to parts to be cooled and parts to be lubricated inside the motor housing, as well as parts to be cooled and parts to be lubricated. The oil pumping unit pumps the lubricating oil inside the first housing into the oil pumping passage, and transfers the lubricating oil to the parts to be cooled and the parts to be lubricated. The oil returning passage allows the lubricating oil inside the second housing to flow back into the first housing. This cooling and lubrication device can achieve active and directional cooling and lubrication of the parts to be cooled and the parts to be lubricated.

Abstract: A vehicle electric drive assembly and a new energy vehicle are disclosed. The electric drive assembly comprises a motor and a reducer. The motor comprises a motor shaft, and the reducer comprises an input shaft, an intermediate shaft, and an output shaft. The input shaft is fixedly connected to the motor shaft, the output shaft and the input shaft are coaxially provided, the intermediate shaft is provided parallel to the input shaft and the output shaft, and the input shaft drives the output shaft to rotate through the intermediate shaft. The electric drive assembly has the advantages of compact structure, simple manufacturing, low cost, high performance, and small space occupation.

Abstract: A reducer housing and an electric drive assembly are disclosed. A liquid cooled heat dissipation structure is provided at a bottom of the reducer housing and/or on a side wall thereof through which lubricating oil flows. The heat dissipation structure includes a coolant tank and a cover plate that seals the coolant tank. Two ends of the coolant tank are respectively provided with a liquid inlet and a liquid outlet. Convex structures and concave structures are alternately provided on the bottom of coolant tank so that inner and outer sides of the bottom of the coolant tank are in a wavy shape to increase a contact area between the coolant tank and the lubricating oil inside the reducer housing.