Method and apparatus for identification of an external power supply in a motor vehicle
US6662123B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 9, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Sep 23, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0047
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for identification of an external start is fitted in a vehicle which has an electrical on-board power supply system (14) fed with an on-board power supply system voltage of about 12.5 V via a vehicle battery (10). A negative pole (11) of the battery (10) is connected to a vehicle earth (15). A monitoring unit (13) is arranged between a positive pole (12) of the battery (10) and the on-board power supply system (14). A conventional voltage sensor (20) for detection of the on-board power supply system voltage, a similarly conventional current sensor (21) for detection of the current flowing out of the battery, and a conventional temperature sensor (22) for detection of the operating temperature of the battery (10) are provided in the monitoring unit (13). The main measurement variable is the on-board power supply system voltage; the battery current and the battery temperature represent auxiliary measurement variables in a monitoring algorithm. Furthermore, the monitoring unit (13) contains a microcontroller (23), which can identify a change in the on-board power supply system load via a CAN bus (25). As is indicated by the dashed line (26), the on-board power supply system l…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.