Power supply device
US11186202B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Aug 12, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a power supply device, a battery switching unit is a circuit capable of switching a series-connected relay, a parallel-connected relay, a parallel-connected relay, and a parallel-connected relay to switch to a series circuit connecting a first battery and a second battery in series or a parallel circuit connecting the first battery and the second battery in parallel. When charging the first battery and the second battery, a controller controls the battery switching unit to switch to a parallel circuit, controls the parallel-connected relay based on voltages applied to a first cathode terminal and a first anode terminal, and further controls the parallel-connected relay based on voltages applied to a second cathode terminal and a second anode terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.