Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
MOTOR ROTOR, MOTOR, AND ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2017/202320
Kind Code:
A1
Abstract:
A motor rotor (300), a motor (1000), and an electric vehicle (2000). The motor rotor comprises a rotor core (310) formed by stacking multiple rotor punching plates. Each rotor punching plate comprises a punching plate body (100). A steel magnet groove (200) allowing a steel magnet to be inserted is formed in the punching plate body. There are multiple steel magnet grooves. The multiple steel magnet grooves form a steel magnet groove group. The steel magnet groove group forms a rotor magnetic pole. The steel magnet groove group comprises a first steel magnet groove (210) and a second steel magnet groove (220) symmetrically arranged relative to a first diameter of the punching plate body. The first steel magnet groove and the second steel magnet groove are arranged in a first V shape opened to the outside. In the motor rotor, the V-shape arrangement opened to the outside and the steel magnet groove group forming the magnetic pole are used, so that when the rotor rotates in a high speed and especially in an ultra-high speed, the stressed area of the centrifugal force applied to the steel magnets accommodated in the steel magnet grooves can be reduced, so as to release the drag stress generated in the steel magnets, and the service life of the steel magnets is further improved; and the motor is particularly applicable to a driving motor running in an ultra-high speed in the electric vehicle.

More Like This:
Inventors:
MA BINGQING (CN)
WU SHIXUN (CN)
QI WENMING (CN)
Application Number:
PCT/CN2017/085592
Publication Date:
November 30, 2017
Filing Date:
May 23, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BYD CO LTD (CN)
International Classes:
H02K1/27
Foreign References:
CN205829322U2016-12-21
CN205829324U2016-12-21
CN205986384U2017-02-22
CN206077183U2017-04-05
CN104242509A2014-12-24
EP1037365A12000-09-20
JP2014212596A2014-11-13
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
Download PDF: