Patent · US Active

Determining the age of an electrochemical energy storage unit

US11125828B2 · kind B2 · utility

1Cited by

1References

8Claims

0Family size

Assignee

ROLLS-ROYCE DEUTSCHLAND LTD & CO KG · DE

Inventors

Christopher Betzin · Forchheim, DE
Holger Wolfschmidt · Erlangen, DE

Key dates

Filing date	Aug 16, 2017
Grant date	Sep 21, 2021
Priority date	—
Expiry date	Jun 11, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/3835
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Various embodiments include a method for determining the age of an electrochemical energy storage unit comprising: referring to a first open-circuit voltage curve of the electrochemical energy storage unit dependent upon the state of charge of the electrochemical energy storage unit as a reference; ascertaining a second open-circuit voltage curve of the electrochemical energy storage unit dependent upon the state of charge of the electrochemical energy storage unit; and determining the age of the electrochemical energy storage unit by comparing the first and second open-circuit voltage curves.

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