Magnetic coupling device for charging an electric car which includes split cores provided at one of a power receiving portion and a charging coupler
US6127800A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 13, 1998 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | May 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S336/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A C-shaped fixed core is provided at a power receiving portion, and a secondary coil is wound on a vertical portion of the fixed core. A moving core is vertically movable in sliding contact with distal end surfaces of horizontal portions of the fixed core. A primary coil, having an air core portion, is provided at a charging coupler. When the charging coupler is attached to the power receiving portion, the moving core is moved downward to extend through the air core portion of the primary coil, and opposite end portions of the moving core are contacted respectively with the horizontal portions of the fixed core. As a result, a magnetic circuit is formed between the primary and secondary coils. The charging coupler is lightweight since it does not have a core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.