Thermal runaway detection of automotive traction batteries employing force-sensing resistor (FSR) pressure sensor
US12261280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2020 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Feb 5, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2220/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A detection device for detecting a thermal runaway condition in a rechargeable automotive traction battery that includes a closed traction battery housing for receiving at least a plurality of rechargeable electrochemical energy cells and being equipped with a safety relief valve. The detection device includes a force-sensing resistor. The force-sensing resistor has flexible substrates separated by a spacer member and defining a force-sensitive area, and a venting duct connecting a space between the two substrates and a vent outlet. At least the force-sensitive area of the force-sensing resistor is placeable inside the traction battery housing, and the vent outlet is fluidically connectable to a detection region of an interior space of the traction battery housing which is located in the vicinity of the safety relief valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.