Electric charging system
US8796991B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2012 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Jan 18, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S30/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In an electric charging system, a charging cable of an electric charger is connected to an electric vehicle, and a supply voltage at the electric charger is temporarily raised and dropped. A receiving voltage at the electric vehicle rises and falls in conjunction with to the supply voltage. Accordingly, a feature point is assigned to each of electric charger data obtained by applying a filtering process to the supply voltage and vehicle data obtained by applying a filtering process to the receiving voltage. Then a time lag between the electric charger data and the vehicle data due to filtering processing is calculated based on the feature points. Upon determining an insulation failure and the like between the electric charger and the electric vehicle, the electric charger data and the vehicle data are synchronized based on the time lag and then compared.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.