公开(公告)号：US20230006486A1

公开(公告)日：2023-01-05

申请号：US17765584

申请日：2020-12-22

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Pingyuan LUO ,  Liang XIONG ,  Yadong WANG

IPC: H02K1/20 ,  H02K5/20

Abstract: A motor cooling structure, a drive assembly and a vehicle. The motor cooling structure includes: branch flow-channels (100), shell flow-channels (200), end cover flow-channels (300), a liquid inlet (201) and a liquid outlet (202). A plurality of the branch flow-channels (100) are circumferentially arranged on a stator (1) of a motor around an axis of the motor. The shell flow-channels (200) includes a liquid inlet flow-channel (211), shell long flow-channels and a liquid outlet flow-channel (212). The liquid inlet flow-channel (211), the plurality of shell long flow-channels and the liquid outlet flow-channel (212) are circumferentially arranged on a reducer shell (2) around the axis of the motor. The end cover flow-channels (300) includes end-cover long flow-channels, and a plurality of the end-cover long flow-channels are circumferentially arranged on a motor end cover (3) around the axis of the motor. The shell flow-channels (200), the plurality of branch flow-channels (100) and the end cover flow-channels (300) form a continuous total flow-channel. The liquid inlet (201) is disposed on the reducer shell (2), and is in communication with the liquid inlet flow-channel (211). The liquid outlet (202) is disposed on the reducer shell (2), and is in communication with the liquid outlet flow-channel (212). The motor cooling structure realizes immersion cooling of the motor and improves the cooling efficiency of the motor.

公开(公告)号：US20230041744A1

公开(公告)日：2023-02-09

申请号：US17790296

申请日：2021-04-22

Applicant: GREAT WALL MOTOR COMPANY LIMITED

Inventor： Liang XIONG ,  Zhe JIANG ,  Yongluan ZHANG ,  Xinran DONG ,  Guowei SONG ,  Meng LIU ,  Pingyuan LUO ,  Yushan LI ,  Zelin GAO ,  Yadong WANG

IPC: B60L58/27 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H01M10/657 ,  H01M10/66

Abstract: A method for controlling heating of a battery pack is provided, in which, the method includes: acquiring a temperature of the battery pack; and controlling a motor controller to output a current to a motor, if the temperature of the battery pack is lower than a preset temperature threshold, so as to generate a magnetic field in the motor having a magnetic pole direction consistent with or opposite to a magnetic pole direction of a motor rotor and to enable the motor to maintain a stationary state.