Electrically insulating, thermally conductive coatings for electrical systems and deposition methods thereof
US11289967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2019 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Jan 16, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/016
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An electric machine includes a rotor assembly having a rotor core that extends in an axial direction and a stator assembly surrounding and coaxial with the rotor assembly. The stator assembly includes a stator core having slots extending in a radial direction into an inner surface of the stator core and extending axially from a first end surface to a second end surface of the stator core. The stator assembly includes stator coil windings disposed within the respective slots of the stator core and a first electrically insulating conformal coating disposed between the stator core and the stator coil windings. The conformal coating includes a polymer matrix impregnated with an effective amount of thermally conductive ceramic materials, above a percolation threshold, that form continuous thermal pathways across a thickness of the first coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.