An oil-cooled motor
An oil-cooled, oil-channel technology, applied in the direction of electric components, electromechanical devices, electrical components, etc., can solve problems such as damage and lack of cooling channels for rotor cores, and achieve the effects of easy manufacturing, high positioning accuracy, and reasonable structure settings
Active Publication Date: 2021-03-09
DONGFENG MOTOR CORP HUBEI
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Although the stator winding of the motor is cooled, the rotor core lacks cooling channels. If a radial oil channel is directly opened on the rotor core to connect to the inner oil channel of the shaft, the magnetic steel of the rotor core will be pierced, resulting in destroy
Method used
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Embodiment Construction
[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings to facilitate a clearer understanding of the present invention, but they do not limit the present invention.
[0026] Such as Figure 1-7 As shown, an oil-cooled motor includes a rotating shaft 6 and a rotor core 4 sleeved on the rotating shaft 6. The two axial ends of the rotor core 4 are axially fixed by the rotor end plate 5. It is characterized in that it also includes an oil guide Plate 9, the oil guide plate 9 is arranged in the axial middle of the rotor core 4, the oil guide plate 9 is an annular plate, the oil guide plate 9 is provided with a plurality of radial oil guide plate oil passages 901, and the rotating shaft 6 is provided with The shaft oil passage 601 is hollow in the axial direction, and one end of the shaft oil passage 601 is connected with an oil inlet pipeline. The other end is closed; the rotor core 4 is provided with an axial rotor core...
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The invention discloses an oil-cooled motor, which comprises a rotating shaft and a rotor iron core sleeved on the rotating shaft. In the axial middle of the rotor core, there are multiple radial oil guide plate oil passages in the oil guide plate, axial hollow shaft oil passages in the rotor shaft, and axial rotor core oil passages in the rotor core The side of the rotor end plate close to the rotor iron core is provided with an end plate groove connected with the rotor iron core oil passage, and the two ends of the oil guide plate oil passage are respectively connected with the rotating shaft oil passage and the rotor iron core oil passage. The rotor core oil passage delivers the cooling oil to the inside of the rotor core through the oil guide plate for cooling, and cools the outer surface of the rotor core through the groove of the end plate. While cooling the stator winding, the rotor core is also cooled. Cooled down. By arranging the deflector, it is avoided to directly open the radial oil channel on the rotor iron core so as to damage the rotor magnetic steel.
Description
technical field [0001] The invention relates to the technical field of motor cooling, in particular to an oil-cooled motor. Background technique [0002] Among the motors used in new energy vehicles, most motors are of the water-cooled structure type, that is, the casing and the stator core are shrink-fitted, the heat of the stator is transferred to the casing through the iron core, and there are water channels inside the casing. The heat is taken away by the cooling water. This cooling type does not directly cool the heating elements in the motor, but indirect cooling through the casing, so the cooling effect is poor. Although some oil-cooled motors directly spray and cool the stator windings, they only cool the outer circumferential surface of the windings, and the inner circumferential surfaces of the windings and the rotor are still not cooled. Although the cooling effect is improved compared with water-cooled motors, it is still bad. [0003] Chinese patent CN10678745...
Claims
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IPC IPC(8): H02K3/24H02K1/20H02K1/32H02K9/19H02K5/04
CPCH02K1/20H02K1/32H02K3/24H02K5/04H02K9/193
Inventor 周厚建郭俊王玲珑徐刚赵延新
Owner DONGFENG MOTOR CORP HUBEI