Electronic control unit including discharging circuit with plurality of resistors connected in series
US8891210B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2011 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jan 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic control unit mounted on a vehicle includes: a capacitor that smoothes voltage of a DC power source electrically isolated from a body of the vehicle; a resistor circuit including a plurality of resistors connected in series, which is connected in parallel to the capacitor to discharge electric charge stored in the capacitor; and a fault judging circuit that judges whether or not the resistor circuit is in a fault condition by comparing the voltage across the resistor included in the resistor circuit with a fault threshold value. The fault judging circuit is adapted to change the fault threshold value based on the voltage of the DC power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.