- 专利标题: Shaft for an electric machine
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申请号: US16895014申请日: 2020-06-08
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公开(公告)号: US11489410B2公开(公告)日: 2022-11-01
- 发明人: Martin Lang , Thomas Auer , Sebastian Paulik , Harald Wendl , Gerhard Obermaier , Maria Lang
- 申请人: ZF Friedrichshafen AG
- 申请人地址: DE Friedrichshafen
- 专利权人: ZF Friedrichshafen AG
- 当前专利权人: ZF Friedrichshafen AG
- 当前专利权人地址: DE Friedrichshafen
- 代理机构: Dority & Manning, P.A.
- 优先权: DE102019208293.9 20190606
- 主分类号: H02K9/193
- IPC分类号: H02K9/193 ; H02K7/00
摘要:
A shaft (12) for cooling an electric machine (10) includes: an outer sub-shaft (32), which is designed for being rotationally fixed to a rotor (14) of the electric machine; an inner sub-shaft (30), which is rotationally fixed to the outer sub-shaft and is designed as an output shaft of the electric machine; an inflow (36) arranged in the radial direction between the outer sub-shaft and the inner sub-shaft, in order to supply cooling fluid (28) to the shaft; and an outflow (42) arranged in the radial direction between the outer sub-shaft and the inner sub-shaft, in order to discharge cooling fluid supplied to the shaft. The outer sub-shaft encloses a fluid chamber (40), which is arranged in the axial direction between the inflow and the outflow. A direction of flow of cooling fluid in the fluid chamber is established by a delivery direction of a fluid pump (24).
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