发明授权
- 专利标题: System and method of active end-turn cooling for an interior permanent magnet motor
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申请号: US17377723申请日: 2021-07-16
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公开(公告)号: US11705781B2公开(公告)日: 2023-07-18
- 发明人: Insu Chang , SeungHwan Keum , Jun-mo Kang , Young J. Kim
- 申请人: GM Global Technology Operations LLC
- 申请人地址: US MI Detroit
- 专利权人: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- 当前专利权人: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- 当前专利权人地址: US MI Detroit
- 代理机构: Vivacqua Crane PLLC
- 主分类号: H02K9/19
- IPC分类号: H02K9/19 ; H02K1/20 ; H02K5/20 ; H02K9/193
摘要:
A system and method of active endturn cooling of an electric motor of a vehicle is provided. The method comprises providing a motor having a coolant nozzle and a cam, and measuring speed, lateral acceleration, and road tilt angle of coolant due to road tilt. The method further comprises calculating coolant angle and coolant acceleration angle based on the road tilt angle and the lateral acceleration if the speed is greater than zero. The method further comprises comparing the coolant angle with a critical angle. The method further comprises calculating a first control angle and a first coolant distance based on the road tilt angle and the lateral acceleration of the vehicle if the acceleration angle is greater than the critical angle. The method further comprises determining a cam position based on the first control angle. The method further comprises moving the cam to the position to move the nozzle and compensate for the lateral acceleration such that coolant drops within a target area of the motor.
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