Voltage conversion device
US11056975B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2020 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Jan 23, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a voltage conversion device that is configured to perform zero point adjustment of a high voltage-system voltage detected by a high voltage-system voltage detector, when a relay is off. The voltage conversion device is also configured to estimate a forward voltage of an upper arm diode and to perform output adjustment of the high voltage-system voltage detected by the high voltage-system voltage detector, based on a voltage calculated by subtracting the forward voltage from a power storage voltage detected by a power storage voltage detector, when the relay is on, a low voltage-system power line has no electric power consumption, and a voltage conversion circuit does not perform voltage conversion. The voltage conversion device is further configured to create a high voltage-system voltage correction map, based on results of the zero point adjustment and the output adjustment of the high voltage-system voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.