On-board bidirectional AC fast charger for electric vehicles
US11217996B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 12, 2018 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Nov 19, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S10/126
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric vehicle fast charger and methods thereof are described, adapted for re-use of magnetic components of an electric vehicle having traction converters when the electric vehicle is stationary and connected to a power grid. A switching stage provided by one or more sets of switches is controlled complementarily with the switches of the traction converters to (i) provide inversion of a grid voltage and (ii) shape current of the grid current between the electric vehicle and the power grid to track a waveshape of the grid voltage. A single switching stage and a dual switching stage circuit are contemplated, along with switch controller circuits, and instruction sets for switch control. Variants provide for energy transfer to accommodate for energy imbalances between storage devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.