Title:
ROTOR, ELECTRIC MOTOR AND ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2020/258970
Kind Code:
A1
Abstract:
Provided are a rotor, an electric motor and an electric vehicle, wherein same are used for reducing the kinetic energy loss of an electric motor under the premise that effective heat dissipation of a rotor is achieved. The rotor comprises a rotor iron core and a rotor shaft, wherein the rotor iron core is tubular and is provided with a first end and a second end; a fixing plate is fixed to at least one of the ends of the rotor iron core, and the fixing plate is provided with a through hole and a first flow channel; the first flow channel is a damping flow channel, with an inlet of the first flow channel being in communication with the through hole, and with an outlet thereof being provided in the surface of the circumferential side of the fixing plate; the rotor shaft is fixedly assembled in the rotor iron core, and at least one end of the rotor shaft extends to the outer side of the rotor iron core from the through hole in the fixing plate; the rotor shaft is internally provided with a second flow channel arranged in the axial direction, and is at least provided with a third flow channel located at the position corresponding to one through hole and arranged in the radial direction thereof; and an inlet of the second flow channel is provided in one end of the rotor shaft, an outlet of the second flow channel is in communication with an inlet of the third flow channel, and an outlet of the third flow channel is in communication with the inlet of the first flow channel.
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Inventors:
WANG JIANGANG (CN)
LI QUANMING (CN)
XIE TINGYU (CN)
LI QUANMING (CN)
XIE TINGYU (CN)
Application Number:
PCT/CN2020/083051
Publication Date:
December 30, 2020
Filing Date:
April 02, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02K1/32; H02K9/19
Foreign References:
| CN110380545A | 2019-10-25 | |||
| CN106849509A | 2017-06-13 | |||
| CN208707441U | 2019-04-05 | |||
| CN205911849U | 2017-01-25 | |||
| US20040221879A1 | 2004-11-11 | |||
| CN103812244A | 2014-05-21 |
Other References:
See also references of EP 3913772A4
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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