Patent · US Active

Energy storage device for a motor vehicle

US9764701B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Peter Lamp · Landsberg am Lech, DE
Andreas Stoermer · Bad Aibling, DE
Marcus Hafkemeyer · Jersey City, US

Key dates

Filing date	May 28, 2013
Grant date	Sep 19, 2017
Priority date	—
Expiry date	May 13, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/70
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A motor vehicle energy storage device includes a first electrical energy store characterized by a first characteristic voltage curve defining the open-circuit voltage of the first energy store depending on the relative charge state and by a first characteristic resistance curve defining the internal resistance of the first energy store relevant for a charge process of the energy store, and a second electrical energy store connected in parallel and characterized by a second characteristic voltage curve defining the open-circuit voltage of the second energy store depending on the relative charge state and by a second characteristic resistance curve defining the internal resistance relevant for a charge process of the second energy store. The voltage value ranges covered by the first characteristic voltage curve and the second characteristic voltage curve partially overlap, and the first and second characteristic resistance curves and the second characteristic resistance curve have exactly one intersecting point.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.