Method and system to prevent vehicle driveaway during battery charging
US8863870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2013 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Jan 7, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system and method are disclosed for preventing driveaway or roll away of a plug-in electric vehicle when it is being charged or is coupled to an external power supply cord. When it is detected based on at least one of the following conditions: a current is flowing to the battery charger, a voltage source is coupled to the battery charger, an access door allowing access to the receptacle on board the vehicle is open and/or a plug detect switch indicates that a plug is coupled with the receptacle, a mechanical restraint on the driveline is prevented from being released. The mechanical restraint may be a parking brake. Alternatively, the mechanical restraint may include preventing the gear shift selector from being moved out of the park position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.