Cooling and lubrication apparatus of electrical drive assembly and electrical drive assembly

A cooling and lubrication device of an electric drive assembly, wherein the electric drive assembly comprises a motor unit and a reducer unit, the motor unit comprises a motor housing, and the reducer unit comprises a reducer housing, characterized in that

• the cooling and lubrication device comprises an oil pumping unit, an oil pumping passage, and an oil returning passage;
• the oil pumping passage comprises several oil distribution passages, and positions of 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 inside the reducer housing;
• the oil pumping unit comprises an oil inlet and an oil outlet, the oil inlet is communicated with a first housing, the oil outlet is communicated with the oil pumping passage, and the oil pumping unit is used to pump the lubricating oil inside the first housing into the oil pumping passage, and transfer the lubricating oil to the parts to be cooled and the parts to be lubricated through the oil distribution passages;
• the oil returning passage is provided at the bottom of the second housing to allow the lubricating oil inside the second housing to flow back into the first housing;
• the first housing is the motor housing, and the second housing is the reducer housing;
• alternatively, the first housing is the reducer housing, and the second housing is the motor housing.