Power supply device, electrically-driven vehicle incorporating power supply device, and method of controlling power supply device
US7773353B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Aug 13, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ECU determines based on a voltage from an insulation resistance decrease detector whether the insulation resistance of a power supply device decreases or not. When a load external to the vehicle is not connected to the power supply device, the ECU sets a determination threshold value for determining that the insulation resistance decreases to a normal first value. On the other hand, when the load external to the vehicle is electrically connected to the power supply device, the ECU sets the determination threshold value to a second value which is lower than the first value, in consideration of an increase in the capacitive component due to a capacitor of a Y-capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.