US 12,261,280 B2
Thermal runaway detection of automotive traction batteries employing force-sensing resistor (FSR) pressure sensor
Philippe Boyer, Boust (FR); Arthur Cretin, Luxembourg (LU); Patrick Di Mario Cola, Serrouville (FR); Thierry Goniva, Luxembourg (LU); Martin Thinnes, Trierweiler (DE); and Lukas Wurth, Arlon (BE)
Assigned to IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A., Echternach (LU)
Appl. No. 17/624,553
Filed by IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A., Echternach (LU)
PCT Filed Jun. 3, 2020, PCT No. PCT/EP2020/065340
§ 371(c)(1), (2) Date Jan. 3, 2022,
PCT Pub. No. WO2021/001107, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. LU101295 (LU), filed on Jul. 3, 2019.
Prior Publication US 2022/0278385 A1, Sep. 1, 2022
Int. Cl. H01M 10/658 (2014.01); H01M 10/48 (2006.01); H01M 10/625 (2014.01); H01M 50/204 (2021.01); H01M 50/249 (2021.01)
CPC H01M 10/658 (2015.04) [H01M 10/48 (2013.01); H01M 10/625 (2015.04); H01M 50/204 (2021.01); H01M 50/249 (2021.01); H01M 2200/20 (2013.01); H01M 2220/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A detection device for detecting a thermal runaway condition in a rechargeable automotive traction battery comprising 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 including a force-sensing resistor that comprises:
at least two flexible substrates being 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 of the force-sensing resistor,
wherein at least the force-sensitive area of the force-sensing resistor is arranged inside the traction battery housing, and the vent outlet is fluidically connected to a detection region of an interior space of the traction battery housing which is located in the vicinity of the safety relief valve.