Patent · US Active

Method and device for testing a battery state in at least one battery

US12181534B2 · kind B2 · utility

0Cited by

4References

16Claims

0Family size

Assignee

CMWTEC Technologie GmbH · DE

Inventors

Mohammed Radhi Ali-Ogalli · Limburg a. d. Lahn, DE
Michael W. Jacobs · Sunnyvale, US
Erik Zinger · Oranienburg, DE

Key dates

Filing date	Apr 24, 2020
Grant date	Dec 31, 2024
Priority date	—
Expiry date	Aug 16, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and a device for testing a battery state determines if a battery is faulty. A first impedance test is conducted to determine the internal resistance of the battery, wherein the battery is energized with an electrical current flow with a certain frequency and a resulting voltage response of the battery is measured. A load high-current test of the battery with a test pulse HRD test is conducted next. Then, a second impedance test is conducted. The measurement results of the tests are recorded and stored, and then evaluated by arranging such results offset in relation to one another, in such a way that the battery state can be derived therefrom, in particular whether the battery is faulty.

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