A liquid-cooled stator and built-in rotor magnetic steel disc hub motor
A technology of electric motors and disc wheels, which is applied in the field of electric motors, can solve problems such as inability to dissipate in time, low power density and efficiency, and poor air heat conductivity, and achieve improved efficiency and maintainability, reduced power loss, and high power density Effect
Inactive Publication Date: 2018-02-02
BEIJING KANGCHENG TECH CO LTD
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Problems solved by technology
[0002] The motors used in the field of pure electric and hybrid vehicles are mostly AC permanent magnet synchronous motors, DC motors or AC asynchronous motors with radial flux. Due to the large axial installation size of traditional radial motors, the power density and efficiency are low. , which is not conducive to the application in the field of electric vehicles with strict space requirements and high efficiency requirements
[0003] Conventional water-cooled motors generally adopt a single cooling form such as water-cooled machine base or a small number of end-cap water-cooled, while pure electric and hybrid electric motors require high protection levels, the chassis installation space is small, and the motors are used in acceleration, overtaking, climbing and other working conditions , generating a large amount of heat. Considering the relatively poor thermal conductivity of the air in the machine base, sometimes only relying on the water cooling of the machine base or the end cover to exchange heat often cannot be dissipated in time, which brings great challenges to the temperature rise of the motor.
Method used
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Embodiment Construction
[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] The stator liquid-cooled and rotor built-in disc motor is an axial excitation flux motor, which adopts a double-rotor single-stator structure, wherein the rotor adopts a magnetic steel built-in structure, and the heat management adopts stator liquid cooling and stator winding rings. Oxygen resin plastic package combination mode; including stator assembly st100, drive end rotor assembly ro200, non-drive end rotor assembly ro300, resolver re400. The stator assembly st100 is located in the middle of the drive-end rotor assembly ro200 and the non-drive-end rotor assembly ro300, and the drive-end rotor assembly ro200, the non-drive-end rotor assembly ro300 and the base 1 are positioned through a notch. The rotor assembly ro200 at the driving end, the rotor assembly ro300 at the non-driving end, and the machine base 1 are tightly connected by set screws 2 to form a ...
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The invention discloses a disk-type hub motor adopting stator liquid cooling and having rotor magnetic steel being embedded. The disk-type hub motor comprises a stator assembly, a driving end rotor assembly, a non-driving end rotor assembly and a rotary transformer. The disk-type hub motor adopting stator liquid cooling and having rotor magnetic steel being embedded is an axial excitation flux motor. A dual-rotor single-stator framework is adopted, and rotors have magnetic steel embedded structures. A combined heat dissipation mode of stator liquid cooling and plastic package of a stator winding by epoxy resin is adopted in heat management. The disk-type motor in which the combined heat dissipation mode of stator liquid cooling and plastic package of the stator winding by the epoxy resin is adopted has the advantages of higher power density, higher torque density and more compact structure.
Description
technical field [0001] The invention relates to a motor in the field of pure electric and hybrid electric vehicles, in particular to a disc-type hub motor with a liquid-cooled stator and a built-in rotor magnetic steel. Background technique [0002] The motors used in the field of pure electric and hybrid vehicles are mostly AC permanent magnet synchronous motors, DC motors or AC asynchronous motors with radial flux. Due to the large axial installation size of traditional radial motors, the power density and efficiency are low. , which is not conducive to the application in the field of electric vehicles with strict space requirements and high efficiency requirements. [0003] Conventional water-cooled motors generally adopt a single cooling form such as water-cooled machine base or a small number of end cover water-cooled, while pure electric and hybrid electric motors require high protection levels, the chassis installation space is small, and the motor is used in accelera...
Claims
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IPC IPC(8): H02K1/20H02K1/14H02K1/27H02K3/04H02K3/32H02K16/02
CPCH02K1/14H02K1/20H02K1/27H02K3/04H02K3/32H02K16/02
Inventor 邹忠月陈起旭刘霄曹秉刚
Owner BEIJING KANGCHENG TECH CO LTD