Patent · US Active

Impedance measurements in battery management circuits

US11802917B1 · kind B1 · utility

3Cited by

1References

18Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Christian Walther · Frankfurt am Main, DE
Markus Ekler · Birkenfeld, DE
Christian Heiling · Graz, AT

Key dates

Filing date	May 25, 2022
Grant date	Oct 31, 2023
Priority date	—
Expiry date	May 25, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG01R19/2509
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A process for determining an impedance of a battery cell may comprise delivering an excitation current to the battery cell; performing, via an analog-to-digital converter (ADC), one or more first measurements associated with the battery cell in the presence of the excitation current, wherein the one or more first measurements comprise one or more current measurements; performing, via the ADC, one or more second measurements associated with the battery cell in the presence of the excitation current, wherein the one or more second measurements comprise one or more voltage measurements; and determining the impedance of the battery cell based on the one or more first measurements and the one or more second measurements.

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