Hangzhou Quadrant Technology Co., Ltd.

Ruinan Wang

Yi Zhao

Liping Wang

Guojun Zhang

Hezhao Hua

Zhixue Lu

An integrated electric oil pump and an operation method thereof are disclosed. The integrated oil pump includes a pump housing; an oil inlet; an oil outlet; a fixed shaft in the pump housing; an inner gear eccentrically and rotatably connected with the fixed shaft; an outer gear coaxially connected with the fixed shaft and rotatably arranged in the pump housing, the outer gear is located at an outer periphery of the inner gear and engaged with the inner gear; a motor rotor, the motor rotor is fixedly connected to an outer periphery of the outer gear; and a motor stator at an outer periphery of the rotor, the motor stator is fixedly connected with the pump housing; one end of the channel is in communication with the oil inlet, and an internal circulation of the cooling oil is achieved through the channel.

Integrated electric oil pump and operation method thereof

An electric oil pump, including a pump housing, a fixed shaft in the pump housing, an inner gear eccentrically and rotatably connected to the fixed shaft, an outer gear coaxially connected to the fixed shaft and rotatably arranged in the pump housing, the outer gear is located at an outer periphery of the inner gear and engaged with the inner gear, a motor rotor fixedly connected to an outer periphery of the outer gear, and a motor stator at an outer periphery of the motor rotor, the motor stator is fixedly connected to the pump housing. A projection area of the motor stator, a projection area of the motor rotor, a projection area of the outer gear, a projection area of the inner gear and a projection area of the fixed shaft on a plane through an axis of the fixed shaft at least partially overlap.

Electric oil pump

An integrated electric oil pump includes a pump housing, in which a motor and a gerotor in the motor are arranged, a ball bearing is arranged between the motor and the gerotor, the motor includes a stator assembly and a motor rotor, the gerotor includes an inner gear, an outer gear and a pin, the hollow motor rotor is installed within the stator assembly, the outer gear is arranged in the motor rotor and is integrated with the motor rotor, a shaft sleeve is installed at a center of the motor rotor, the pin is arranged inside the shaft sleeve, the inner gear is arranged outside the shaft sleeve, the inner gear and the pin are respectively in press fit with the shaft sleeve, and the inner gear is engaged with the outer gear.

Integrated electric oil pump

The present application discloses a high-precision electric oil pump, which relates to the technical field of new energy vehicles. The electric oil pump includes a pump housing connected with an outer gear and an inner gear engaged with each other, the pump housing is internally connected to a fixed shaft concentrically arranged with the pump housing, the outer gear is connected to the fixed shaft and concentrically arranged with the pump housing, the fixed shaft includes a connecting section, an eccentric calibrator is provided on an outer circumferential wall of the connecting section, the eccentric calibrator and the connecting section form an eccentric assembly, the inner gear is rotated around a geometric central axis of the eccentric assembly, and the eccentric assembly is non-concentrically arranged with the pump housing.

Growing community of inventors

Zhejiang, China

Ruinan Wang