Electrical system and method for a hybrid-electric vehicle

US9118210B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Chandra S. Namuduri · Troy, US
• Michael G. Reynolds · Troy, US
• Kenneth J. Shoemaker · Cadillac, US
• Theo L. Moreno · Birmingham, US
• James F. Crawford · Newton, US
• Detlev Schafer · Dexheim, DE
• Danny Y. Mui · Birmingham, US

Key dates

• Filing date: Oct 15, 2012
• Grant date: Aug 25, 2015
• Expiry date: Jun 29, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/7072
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An electrical system includes a battery for providing electrical power to a starter mechanism and an auxiliary load of a hybrid-electric vehicle. An electric double-layer capacitor (“EDLC”) is electrically connectable to the battery and the auxiliary load. A separation switch is electrically connected between the battery and the EDLC for electrically separating the battery from the EDLC and the auxiliary load. The separation switch is opened in response to the voltage across the battery being less than the voltage across the EDLC.