Electric-motor drive for a motor vehicle and radiator fan with an electrically conductive cover for shielding electromagnetic interference
US12368350B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2022 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Mar 8, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2205/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric-motor drive, more particularly a fan drive, is provided for a motor vehicle. The drive contains an electric motor which has a rotatably mounted rotor and a stator having a laminated core. The laminated core forms a stator yoke and stator teeth of the stator, the stator teeth are directed radially from the stator yoke, and a stator winding is supported on the stator teeth. An electrically conductive covering part is provided for influencing and/or screening electromagnetic interference fields produced during the electric-motor operation. The covering part has a sleeve-type lateral wall and a circular-ring-shaped cover surface, which protrudes radially inward from an end of the lateral wall. The lateral wall is placed onto an outer periphery of the stator yoke. The cover surface axially covers the stator winding at least partly, and the lateral wall has a number of venting openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.