Electric machine rotor endcap
US10432056B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2016 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Nov 12, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/203
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vehicle electric machine may include a stator having end windings extending axially from the stator. A rotor may be disposed within the stator and including an endcap having an outer face defining outlets and a furrowed outer periphery with an edge configured to distribute coolant released from the outlets onto the outer face to different axial locations of the end windings during rotation. The furrowed outer periphery may taper toward an in inner flat portion. The outlets may be contained within the inner flat portion. The furrowed outer periphery may be symmetric about any axis perpendicular to and passing through an axis of rotation of the rotor. The outer face may further define channels extending from the outlets to the edge. The channels may be recessed in the outer face. The furrowed outer periphery may define concentric circumferential ridges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.