Method for controlling a vehicle external charging device and, charging device
US11173800B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2019 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Apr 2, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for controlling a vehicle-external charging device for charging a vehicle. The charging device has an AC current grid having a neutral conductor, a protective conductor and at least one phase conductor, a protection and monitoring apparatus, and a DC current charging terminal. The vehicle includes a high-voltage on-board power system and an electrical energy storage element connected to the on-board power system. The method includes electrically connecting the on-board power system to the DC current charging terminal of the charging device, and detecting a protective conductor resistance between the neutral conductor and the protective conductor by feeding in a test current by way of the protection and monitoring apparatus. A frequency of the test current is either outside of a compensation frequency range of the protection and monitoring apparatus or within the compensation frequency range and is filtered out of the compensation frequency range on a narrowband basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.