Coupling store device for a motor vehicle

US9855904B2 · kind B2 · utility

Assignee

• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Moritz Schindler · Munich, DE
• Stefan Schaeck · Munich, DE

Key dates

• Filing date: Mar 23, 2015
• Grant date: Jan 2, 2018
• Expiry date: Mar 8, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T90/14
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A motor vehicle includes a generator, electric consuming devices, a first electric energy storage device and a second energy storage device connected in parallel with the first energy storage device. The two electric energy storage devices, in a storage range, have at least partially overlapping characteristic open-circuit voltage curves. The first energy storage device has a first state-of-charge-dependent characteristic charging internal-resistance curve. The second energy storage device has a second state-of-charge-dependent characteristic charging internal-resistance curve. The first energy storage device has a first state-of-charge-dependent characteristic discharging internal-resistance curve and the second energy storage device has a second state-of-charge-dependent characteristic discharging internal-resistance curve. The first characteristic charging internal-resistance curve extends over an entire relative state-of-charge range in the direction of higher resistances above the second characteristic charging internal-resistance curve. The first characteristic discharging internal-resistance curve extends over an entire relative state-of-charge range in the direction of high…