Patent · US Active

Detection of abnormal self-discharge of lithium ion cells, and battery system

US12306262B2 · kind B2 · utility

0Cited by

2References

5Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Sonia DANDL · Munich, DE
Sebastian SCHARNER · Fürstenfeldbruck, DE
Jan Philipp SCHMIDT · Munich, DE

Key dates

Filing date	Aug 19, 2019
Grant date	May 20, 2025
Priority date	—
Expiry date	Oct 29, 2041

Classification

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

Abstract

A method for detecting abnormal self-discharge in a battery system by monitoring the balancing charge for each cell and a battery system which is configured to use this method are provided. The method makes it possible to predict the probability of the occurrence of a safety-critical state, for example, an internal short circuit, with the result that suitable countermeasures can be taken in good time.

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