An oil-cooled hub motor
An in-wheel motor and oil cooling technology, applied in electrical components, electromechanical devices, electric components, etc., can solve the problems affecting the service life of the stator coil, the heat dissipation of the motor is not well solved, and the use efficiency of the motor is reduced, and the heat dissipation effect is excellent. , improve electrical efficiency, improve the effect of safe driving
Active Publication Date: 2018-04-13
冯辉恒 +1
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Problems solved by technology
However, under the condition that the overall weight and size of the motor are strictly limited, the heat dissipation of the motor has always been a problem that has not been well solved.
The heat generated by the hub motor during operation mainly comes from the heat generated by the stator coil, iron core heating and eddy current of the rotor magnet. Due to the structural characteristics of the motor, the stator coil, iron core and rotor magnet must be placed inside the motor. However, there must be a housing as a mounting component on the outside, so it is difficult to discharge the above-mentioned heat. If the above-mentioned heat is not discharged, it will not only affect the service life of the stator coil, iron core and other components, but also reduce the use efficiency of the motor, so the heat dissipation of the motor will be improved. is an important question
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[0015] The specific embodiments of the present invention are given in conjunction with the accompanying drawings. It should be noted that the description of the specific embodiments of the present invention is to facilitate the understanding of the present invention, and should not be regarded as limiting the scope of protection of the claims of the present invention.
[0016] See figure 1 , the specific embodiment of the present invention is: comprise stator and rotor, be provided with bearing 15 to form rotating structure between described stator and rotor, the key is that stator is provided with oil inlet 13 and oil outlet 14, between stator and rotor A bent oil passage through which the cooling oil passes is formed to cool the coil iron core 7 of the stator and the rotor magnetic steel 6; the cooling oil in the above bent oil passage enters through the oil inlet 13 when the motor is running. After passing through the coil iron core 7 of the stator and the rotor magnetic st...
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The invention discloses an oil-cooling hub motor. The hub motor comprises a stator and a rotor, wherein bearings (15) are arranged between the stator and the rotor to form a rotational structure; specifically, an oil inlet (13) and an oil outlet (14) are formed in the stator; a zigzag-form oil channel for allowing cooling oil to pass through is formed between the stator and the rotor; and the cooling oil is used for cooling a coil iron core (7) of the stator and a rotor magnetic steel (6). The zigzag-form oil channel for allowing the cooling oil to pass through totally winds the heating part of the motor, so that the internal operating temperature of the motor is effectively lowered; meanwhile, the bearings generating dynamical friction are lubricated to a certain degree; therefore, the electrical efficiency of the motor is improved, the service life of the bearings is prolonged, and the insulation level in the motor is improved; and in addition, the oil-cooling hub motor has obvious characteristics and an extremely good radiating effect.
Description
Technical field: [0001] The invention relates to a motor, in particular to a hub motor cooled by cooling oil. Background technique: [0002] Electric vehicles are now widely used, which is the main direction of the development of automobile technology, because electric vehicles are products with high requirements for comprehensive indicators, such as their own weight and load capacity, energy efficiency, vehicle speed, long-term service life and Cost as low as possible, etc. These performance indicators are mutually restrictive. For hub motors, the requirements are high power density, light weight, and long life. Especially for distributed hub motors, in addition to the above requirements, good heat dissipation is also required. However, under the condition that the overall weight and size of the motor are strictly limited, the heat dissipation of the motor has always been a problem that has not been well resolved. The heat generated by the hub motor during operation mainl...
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IPC IPC(8): H02K1/20H02K9/19H02K1/22
CPCH02K1/20H02K1/22H02K9/19
Inventor 冯辉恒吉少波
Owner 冯辉恒