Title:
ELECTRIC MOTOR ROTOR, ELECTRIC MOTOR, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/232835
Kind Code:
A1
Abstract:
Provided in the embodiments of the present application are an electric motor rotor, an electric motor and a vehicle. The electric motor rotor comprises a wound rotor which comprises a rotating shaft, a rotor core and a plurality of rotor coils, wherein the rotor core is fixedly connected to the rotating shaft in a sleeving manner; the rotor core is provided with a plurality of winding holes at intervals around the rotating shaft, and each winding hole penetrates two ends of the rotor core arranged in an axial direction; each rotor coil is wound on the hole wall between two adjacent winding holes, and two adjacent rotor coils share one winding hole; a gap is formed between two adjacent rotor coils, and a first shaft hole is formed in the rotating shaft; and the gap is configured to be a first heat dissipation channel in communication with the first shaft hole, and the first heat dissipation channel is used for a cooling liquid which flows into the rotating shaft. In this way, the cooling liquid, which is introduced into the rotating shaft from the outside, enters the first heat dissipation channel from the first shaft hole under the action of centrifugal force for heat dissipation of the rotor coils of the wound rotor, thereby effectively improving the cooling efficiency of the rotor coils.
Inventors:
CHEN JINHUA (CN)
WU CHAOQIANG (CN)
ZHOU ZHAO (CN)
HUANG JIANXIN (CN)
WANG SHAOHUA (CN)
WU CHAOQIANG (CN)
ZHOU ZHAO (CN)
HUANG JIANXIN (CN)
WANG SHAOHUA (CN)
Application Number:
PCT/CN2021/072624
Publication Date:
November 25, 2021
Filing Date:
January 19, 2021
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02K1/26; H02K1/32; H02K3/487; H02K5/20; H02K9/197
Foreign References:
| CN111769673A | 2020-10-13 | |||
| CN111769674A | 2020-10-13 | |||
| US20030030333A1 | 2003-02-13 | |||
| CN110535261A | 2019-12-03 | |||
| US20180375403A1 | 2018-12-27 | |||
| CN202010418983A | 2020-05-18 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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