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Title:
MOTOR DRIVE SYSTEM OF ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2019/024712
Kind Code:
A1
Abstract:
A motor drive system (10) of an electric vehicle, used for driving an alternating current motor (90) and comprising: a first inverter power module (120) and a second inverter power module (120') disposed in a manner of parallel connection; a direct current input end of the first inverter power module (120) and a direct current input end of the second inverter power module (120') are both electrically connected to an output end of a power battery (30) of the electric vehicle; a first three-phase alternating current output end of the first inverter power module (120) outputs a first three-phase alternating current (U1, V1, W1) to a first three-phase winding (910) of the alternating current motor (90); and a second three-phase alternating current output end of the second inverter power module (120') outputs a second three-phase alternating current (U1', V1', W1') to a second three-phase winding (920) of the same alternating current motor (90). The motor drive system is low in cost, reliable and safe.

Inventors:
CHU XIAOWEI (CN)
WANG PENG (CN)
GONG XIAOFENG (CN)
WANG KAI (CN)
HONG WENCHENG (CN)
ZHUANG ZHAOHUI (CN)
XU LIWEN (CN)
Application Number:
PCT/CN2018/096806
Publication Date:
February 07, 2019
Filing Date:
July 24, 2018
Export Citation:
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Assignee:
NIO CO LTD (CN)
International Classes:
H02P25/00; B60L15/00; H02P27/06
Domestic Patent References:
WO2018087892A12018-05-17
Foreign References:
CN207374164U2018-05-18
CN104767462A2015-07-08
CN106783362A2017-05-31
US20110156629A12011-06-30
CN103944318A2014-07-23
CN105449976A2016-03-30
CN106452218A2017-02-22
JP2006129668A2006-05-18
Attorney, Agent or Firm:
CHINA PATENT AGENT (HK) LTD. (CN)
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