Title:
COMPOSITE PERMANENT MAGNET MOTOR
Document Type and Number:
WIPO Patent Application WO/2021/007874
Kind Code:
A1
Abstract:
Provided is a composite permanent magnet motor, which relates to the technical field of electric motors. The technical problem to be solved is to improve flux-weakening speed expansion capability. The motor comprises a stator and a rotor, wherein the rotor is provided with a plurality of permanent magnet units that are symmetrically arranged around an axis of the rotor at intervals, and each permanent magnet unit is divided into two symmetrical halves by a straight axis of the rotor; and the permanent magnet unit comprises a permanent magnet groove and a composite magnet embedded in the permanent magnet groove, the composite magnet is formed by stacking a first permanent magnet and a second permanent magnet, the first permanent magnet is located outside the second permanent magnet, and the first permanent magnet has a greater coercive force than the second permanent magnet. The motor provided by the present invention can meet the driving requirements of electric vehicles and hybrid vehicles.
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Inventors:
LIN DEFANG (CN)
Application Number:
PCT/CN2019/096926
Publication Date:
January 21, 2021
Filing Date:
July 19, 2019
Export Citation:
Assignee:
SHANGHAI TOP MOTOR CO LTD (CN)
International Classes:
H02K1/27; H02K1/02; H02K21/14
Foreign References:
| JP2014072924A | 2014-04-21 | |||
| JP2014072924A | 2014-04-21 | |||
| CN205725213U | 2016-11-23 | |||
| CN106026597A | 2016-10-12 | |||
| JP2014033582A | 2014-02-20 |
Attorney, Agent or Firm:
SHANGHAI XIAOXIANG INTELLECTUAL PROPERTY AGENCY CO. (CN)
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