Stator cooling structure of built-in disc type motor
A disc motor and cooling structure technology, applied in the magnetic circuit shape/style/structure, motor, electric vehicle, etc., can solve the problems of reducing energy consumption, reducing the volume of the motor, and large axial installation size, etc., to achieve improved convection conversion The effect of heat capacity, reducing high-frequency eddy current copper loss, and high temperature rise resistance
Inactive Publication Date: 2016-05-04
XI AN JIAOTONG UNIV
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Problems solved by technology
[0002] The motors used in the field of pure electric and hybrid vehicles are mostly permanent magnet synchronous motors or induction motors with radial flux. Due to the large axial installation size of traditional radial motors, the power density and efficiency are relatively low, which is not conducive to reducing the size of the motor. size and reduced energy consumption
[0003] Conventional water-cooled motors generally adopt a single cooling form such as base water cooling or end cover water cooling, while electric and hybrid electric vehicle motors require high protection levels, the installation space in the car is small, and the heat inside the motor is due to poor thermal conductivity of the air. , Sometimes only relying on the water cooling of the machine base or the water cooling of the end cover to exchange heat often cannot take away the heat in time
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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0020] like figure 1 As shown, a built-in disc motor stator cooling structure, including stator winding 1, stator winding 1 embedded in the stator core 2, and using magnetic slot wedge 10 to compress the stator winding 1, the stator core 2 through the beam 8 and The set screw 9 is fixed to the end cover 3, and the inner and outer ends of the stator winding 1 are installed with heat-conducting ceramics 4, which are in contact with the end cover 3, and the heat generated by the stator core 2 is conducted to the end cover 3, and the stator The heat generated by the winding 1 passes through the heat-conducting ceramic 4, part of the heat is conducted to the cooling water jacket of the machine base, and part of the heat is conducted to the end cover 3 through the inner circumference bonding surface of the end cover 3 and the heat-conducting ceramic 4, and is cooled by the...
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The invention discloses a stator cooling structure of a built-in disc type motor, which comprises a stator winding; the stator winding is embedded into a stator iron core; the stator winding is compressed by magnetic slot wedges; the stator iron core is fixed onto an end cover via beams and fastening screws; heat conduction ceramics are installed at the inner and outer end portions of the stator winding; the heat conduction ceramics contact the end cover; a lip seal and a bearing outer cover are arranged at the axial outside of a central bearing of the end cover; the lip seal and the bearing outer cover are installed via interference fit, thereby realizing the sealing to the bearing; and a water channel cover board is fixed onto the end cover. According to the stator cooling structure disclosed by the invention, the cooling effect is good, the structure is more compact and the power density of the motor is improved; and the stator cooling structure is suitable for the power in fields with strict space requirements such as pure electric vehicle, hybrid electric vehicle and the like.
Description
technical field [0001] The invention relates to a built-in disc motor, in particular to a stator cooling structure of the built-in disc motor. Background technique [0002] The motors used in the field of pure electric and hybrid vehicles are mostly permanent magnet synchronous motors or induction motors with radial flux. Due to the large axial installation size of traditional radial motors, the power density and efficiency are relatively low, which is not conducive to reducing the size of the motor. size and reduced energy consumption. [0003] Conventional water-cooled motors generally adopt a single cooling form such as base water cooling or end cover water cooling, while electric and hybrid electric vehicle motors require high protection levels, the installation space in the car is small, and the heat inside the motor is due to poor thermal conductivity of the air. , Sometimes only relying on the water cooling of the machine base or the water cooling of the end cover to...
Claims
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IPC IPC(8): H02K1/12H02K5/20
CPCH02K1/12H02K5/20Y02T10/64
Inventor 徐俊陈起旭邹忠月周阳陈建
Owner XI AN JIAOTONG UNIV