A kind of phase-change heat dissipation motor casing and air-cooled motor for its application

A phase change and chassis technology, applied in the direction of chassis/cover/support, electromechanical devices, electrical components, etc., can solve the problem of non-compliance with the lightweight and high power density of new energy vehicles, the increase in the weight of automotive motors, and the power density. Reduce and other problems to achieve the effect of improving heat dissipation effect, temperature balance, and fast internal heat transfer

Active Publication Date: 2019-11-26
上海汽车电驱动有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this will undoubtedly lead to a substantial increase in the weight of the motor used in the vehicle and an increase in the cost directly caused by the auxiliary cooling system, which will eventually reduce its power density, which does not meet the requirements of lightweight and high power density for new energy vehicles.

Method used

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  • A kind of phase-change heat dissipation motor casing and air-cooled motor for its application
  • A kind of phase-change heat dissipation motor casing and air-cooled motor for its application
  • A kind of phase-change heat dissipation motor casing and air-cooled motor for its application

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as Figure 1 to Figure 4 As shown, this embodiment provides a phase-change heat dissipation motor casing, including an annular casing 1, and a plurality of cooling fins 2 arranged at intervals protrude from the outside of the annular casing 1 along the circumferential direction, which is characterized in that: The heat dissipation fin 2 includes a fin body 21, and a plurality of vacuum phase change heat dissipation channels 22 are arranged in the fin body 21, and a phase change working fluid is arranged in the vacuum phase change heat dissipation channel 22.

[0033] The phase change heat dissipation motor housing described in this embodiment, through the phase change characteristics of the liquid working medium in a vacuum environment, enables the vacuum phase change heat dissipation channel 22 to have an extremely efficient heat transfer capacity, so that the heat in the annular shell 1 is rapidly The heat is transmitted to the end of the cooling fin 2, the motor...

Embodiment 2

[0039] Such as Figure 5 to Figure 8 As shown, the phase change heat dissipation motor casing described in this embodiment is similar to the phase change heat dissipation motor casing described in Embodiment 1, the difference lies in:

[0040] The outer surface of the above-mentioned annular shell 1 is provided with several grooves 11 arranged at intervals in the circumferential direction. The fin body 21 is made of micro-channel aluminum flat tubes, and the micro-channel aluminum flat tubes are embedded in the grooves 11. A plurality of heat dissipation through holes 231 are arranged in the microchannel aluminum flat tube 23 , and both ends of the heat dissipation through holes 231 are sealed to form the vacuum phase change heat dissipation channel 22 . The heat dissipation through hole 231 of the micro-channel aluminum flat tube 23 can be sealed by a cold-press sealing process.

[0041] The casing of the phase-change heat-dissipating motor described in this embodiment uses ...

Embodiment 3

[0048] Such as Figure 9 As shown, this embodiment provides an air-cooled motor, including a housing assembly, a stator assembly 4, a rotor assembly 5 and a rotating shaft 6, the rotor assembly 5 is mounted on the rotating shaft 6, and the stator assembly 4 is nested Installed in the casing assembly, the rotor assembly 5 is sleeved in the stator assembly 4, wherein the stator assembly 4 includes a stator core 41 and a coil winding 42 wound on the stator core 41, It is characterized in that: the shell assembly includes a shell shell 10 , an upper end cover 71 and a lower end cover 72 , and the shell shell 10 is the phase-change cooling motor casing described in the first or second embodiment.

[0049] The air-cooled motor described in this embodiment, through the use of the phase change heat dissipation motor casing, the heat of the internal coil winding 42 and the stator core 41 of the motor is quickly transferred to the ends of the heat dissipation fins 2, which improves the ...

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PUM

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Abstract

The present invention discloses a phase-change heat-radiation motor case and an air-cooling motor provided with the same. The phase-change heat-radiation motor case comprises an annular case body. A plurality of alternately-arranged heat-radiating fins are projected out of the outside of the annular case body along the circumferential direction. The phase-change heat-radiation motor case is characterized in that, the heat-radiating fins are composed of fin bodies and a plurality of vacuum phase-change heat-radiating channels are arranged in the fin bodies. A phase-change working medium is arranged in the vacuum phase-change heat-radiating channels. According to the technical scheme of the invention, based on the phase-change characteristics of the liquid working medium in the vacuum environment, the working medium in the vacuum phase-change heat-radiating channels is extremely efficient in heat transfer capability. Therefore, the heat in the annular case body can be quickly transferred to the heat-radiating fins. The motor case is small in size, fast in internal heat transfer speed, and equalized in temperature. The air-cooling motor is fast in heat-radiating effect and stable in operation.

Description

Technical field: [0001] The invention relates to a phase-change heat dissipation motor casing and a motor applied thereto. Background technique: [0002] In recent years, with the increase of motor power, the heat dissipation of the motor directly affects the performance of the motor, especially when the vehicle motor is running in high-power extreme conditions such as starting, climbing, and accelerating, the maximum temperature zone of the winding and the motor casing The large difference in temperature can easily lead to serious failure phenomena such as motor burnout, and the heat dissipation of the motor is mainly through air cooling or water cooling of the casing. The traditional casing is equipped with extruded integrated cooling fins, and the inside of the casing only relies on the heat conduction of the alloy for heat conduction, the heat transfer efficiency is low, and the temperature difference between the top and bottom of the fins is large. In order to solve th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/18H02K5/20
CPCH02K5/18H02K5/20
Inventor 张虹吴发亮李心怡
Owner 上海汽车电驱动有限公司
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