Self-fan-cooling axial magnetic flux motor with built-in centrifugal fan
A centrifugal fan and axial flux technology, which is applied in the direction of motors, magnetic circuits, electric components, etc., can solve the problems of radial flux motors with large axial installation size, low power density and efficiency, and inability to dissipate heat away. , achieve compact structure, increase power density and torque density, and improve heat dissipation
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Problems solved by technology
[0002] The integrated starter / engine in the field of emergency power generation and new energy vehicles is 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 flux motors, the power density and The efficiency is low, and the application is limited in the field of emergency power generation where space requirements are strict, portability, and power density are high.
[0003] Conventional low-power axial flux motors generally use fins on the base or the end covers on both sides to dissipate heat. Under the conditions of large assembly errors between the stator core and the end covers, large loads or high speeds, the motor generates a large amount of energy. The heat exchange only depends on the fins of the frame or the fins of the end cover, which often cannot dissipate the heat in time, which brings great challenges to the insulation and temperature rise of the motor.
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[0030] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0031]The magnetic circuit of the self-fan-cooled axial flux motor with a built-in centrifugal fan runs through the non-drive end stator 1 , the drive end stator 2 and the rotor 3 . The air path adopts a built-in centrifugal fan heat dissipation scheme, and the non-driving end cover plate 32 is assembled with the non-driving end end cover 31 to form a non-driving end ventilation channel; similarly, the driving end cover plate 15 and the driving end cover 14 are assembled to form a driving end cover. Radial ventilation channels. Its built-in centrifugal fan mainly realizes the flow of two air path branches. One of the air path branches is to enter the air from the second radial ventilation slot 31a on the non-driving end cover 31, and flow through the waist-shaped hole 31c of the non-driving end cover 31 and the ventilation of the non-driving end rotor back iron 21. ...
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The invention provides a self-fan-cooling axial flux motor with a built-in centrifugal fan, which adopts a double-stator / single-rotor topology, and a single rotor is positioned between two stators. The motor comprises a driving end stator, a non-driving end stator, a rotor, a wire outlet box, a rotary transformer, a driving end cover, a non-driving end cover and a cooling system composed of a built-in centrifugal fan. The rotor back iron on the non-driving end side serves as an impeller front disc of the built-in centrifugal fan, the rotor back iron on the driving end side serves as an impeller rear disc of the built-in centrifugal fan, and the blades are composed of blades of the rotor back iron on the non-driving end side and blades of the rotor back iron on the driving end side. And thebuilt-in centrifugal fan, the rotary transformer rotor and the rotor are coaxially connected. And the driving end cover and the non-driving end cover are connected with the machine shell through screws. A stator of the rotary transformer is fixed to the non-driving end side cover plate, and the wire outlet box is fixed to the machine shell through screws. Therefore, the heat exchange efficiency is improved. And the power density and the torque density are obviously improved.
Description
technical field [0001] The invention relates to an integrated starter / engine applied in the fields of emergency power generation and new energy vehicles, in particular to a self-fan-cooled axial flux motor with a built-in centrifugal fan. Background technique [0002] The integrated starter / engine in the field of emergency power generation and new energy vehicles is 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 flux motors, the power density and The efficiency is low, and the application in the field of emergency power generation with strict space requirements, portability, and high power density requirements is limited. [0003] Conventional low-power axial flux motors generally use the fins on the base or the end covers on both sides to dissipate heat. Under the conditions of large assembly errors between the stator core and the end covers, large loads or h...
Claims
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IPC IPC(8): H02K9/06H02K9/10H02K1/32H02K1/16H02K16/04H02K5/20H02K1/27
CPCH02K9/06H02K9/10H02K1/32H02K1/16H02K16/04H02K5/20H02K1/276Y02T10/64
Inventor陈起旭王群京李国丽卞晓林刘霄