Detection of an internal short circuit in a battery
Patent
·
OSTI ID:1893017
An electrical device comprises a battery cell; a pressure sensor for measuring swelling forces of the battery cell, optionally with voltage, temperature and current sensors, and a battery management system including a controller. The controller executes a program to: (i) determine a reference swelling force corresponding to a reference electrical signal received from the pressure sensor at an earlier reference time, (ii) determine a second swelling force corresponding to a second electrical signal received from the pressure sensor at a later second time, and (iii) determine whether a risk of internal short circuit of the battery cell exists by comparing a reference level of the reference electrical signal and a signal representative of the second electrical signal. When the signal representative of the second electrical signal exceeds the reference level of the reference electrical signal by a threshold amount, a risk of internal short circuit of the cell exists.
- Research Organization:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AR0000269
- Assignee:
- The Regents of the University of Michigan (Ann Arbor, MI)
- Patent Number(s):
- 11,355,824
- Application Number:
- 16/410,714
- OSTI ID:
- 1893017
- Country of Publication:
- United States
- Language:
- English
Similar Records
State of battery health estimation based on swelling characteristics
NREL/NASA Internal Short-Circuit Instigator in Lithium Ion Cells
Bulk force in a battery pack and its application to state of charge estimation
Patent
·
Tue Apr 11 00:00:00 EDT 2023
·
OSTI ID:1998279
NREL/NASA Internal Short-Circuit Instigator in Lithium Ion Cells
Conference
·
Wed Jun 17 00:00:00 EDT 2015
·
OSTI ID:1214958
Bulk force in a battery pack and its application to state of charge estimation
Patent
·
Tue Sep 11 00:00:00 EDT 2018
·
OSTI ID:1477192