Fail-safe method and apparatus for high voltage parts in a hybrid vehicle
US9738160B2 · kind B2 · utility
38Cited by
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13Claims
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Key dates
| Filing date | Nov 21, 2013 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Nov 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/40
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A fail-safe method and apparatus for high voltage parts in a hybrid vehicle is provided. In the fail-safe method, it is determined whether or not a high voltage main relay is turned off. Here, when the high voltage main relay is turned off, a voltage is charged into a direct current (DC) link using a counter electromotive force generated in a motor generator linked with a revolution of an engine. Voltage control is performed such that the voltage of the DC link is uniformly maintained using an inverter for the motor generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.