Method and apparatus for controlling an electrified powertrain system of a vehicle
US9731605B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2015 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Oct 29, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/16
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electrified powertrain system for a vehicle includes an electric machine coupled to a driveline. An inverter controller communicates directly with an auxiliary power module. An ignition module indicates either a key-on state or a key-off state. When the ignition module is in a key-off state, a low-power DC/DC converter generates an output voltage originating on the high-voltage DC bus having a magnitude sufficient to activate the inverter controller. The inverter controller detects a key-off uncontrolled generator (UCG) mode. The inverter controller directly communicates detection of the key-off UCG mode to the auxiliary power module. The inverter controller controls the inverter. The auxiliary power module supplies electric power to operate low-voltage electrically-powered powertrain actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.