Motor Oil Cooling System

Abstract

Provided is a motor oil cooling system for cooling a motor. The motor is integrated into the internal space defined by a gearbox housing, the motor includes a stator and defines an axial direction and a circumferential direction, the motor oil cooling system includes an oil supply pipeline arranged outside the gearbox housing and an oil injection pipeline arranged in the internal space, the oil injection pipeline includes an axial injection pipe penetrating through the gearbox housing and being in fluid communication with the oil supply pipeline and a first annular oil injection pipe and a second annular oil injection pipe in fluid communication with the axial injection pipe, the axial injection pipe is arranged above the stator of the motor and extends in the axial direction and includes a plurality of first nozzles on the side, facing the motor, of the axial injection pipe, the first annular oil injection pipe and the second annular oil injection pipe respectively extend around the outer circumferences of the opposite ends of the stator of the motor and include a plurality of second nozzles and a plurality of third nozzles on the inner sides facing the center axis.

Description

Technical field [0001] The invention relates to a motor oil cooling system, in particular to a motor oil cooling system for a hybrid electric vehicle electric drive gearbox. Background technique [0002] Hybrid electric vehicles are the direction of future automobile development. The electric drive gearbox integrated motor is used as another power source. The cooling of the motor has always been a challenge in this field. [0003] Existing hybrid vehicles generally use a water cooling system or an oil cooling system to cool the motor located in the electric drive gearbox housing. Since the electric drive gearbox needs lubricating oil to lubricate its gear shaft, the use of a water cooling system to cool the motor will require two different structures for the electric drive gearbox, an oil circuit system and a water cooling system, which increases the structure of the electric drive gearbox. Complexity. Using an oil cooling system to cool the motor can integrate the motor and the ...

AI Technical Summary

Problems solved by technology

However, the existing oil cooling system generally needs to add an oil groove on the gearbox casing, which increases the complexity of the structure of the gearbox casing and the processing requirements

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