Apparatus and method for protecting vehicle door systems from back electromotive force (EMF) voltage
US12273061B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2022 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Sep 21, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/548
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods are provided for protecting a door system from damage by a back electromotive force (EMF) voltage generated when a door coupled to a door actuator is manually closed. The door system may include a driver configured to drive the door actuator to move the door, and a back EMF protection circuit. The back EMF protection circuit detects a back EMF voltage generated by the door actuator when the door is moved, and determines whether the back EMF voltage exceeds an overvoltage threshold. In response to determining that the back EMF voltage exceeds the overvoltage threshold, the back EMF protection circuit causes the driver to transition to an enabled state to short the back EMF voltage to ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.