US 12,263,756 B2
Bi-material electric vehicle battery disconnect
Jongseok Moon, Gothenburg (SE)
Assigned to POLESTAR PERFORMANCE AB, Gothenburg (SE)
Filed by Polestar Performance AB, Gothenburg (SE)
Filed on Dec. 30, 2021, as Appl. No. 17/566,571.
Prior Publication US 2023/0211704 A1, Jul. 6, 2023
Int. Cl. B60L 58/22 (2019.01); B60L 50/64 (2019.01); B60L 58/27 (2019.01); H01M 50/209 (2021.01); H01M 50/502 (2021.01); H02J 7/00 (2006.01)
CPC B60L 58/22 (2019.02) [B60L 50/64 (2019.02); B60L 58/27 (2019.02); H01M 50/209 (2021.01); H01M 50/502 (2021.01); H02J 7/0014 (2013.01); H01M 2220/20 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric vehicle battery disconnect bracket configured disconnect one or more battery cells or modules experiencing a thermal event within a battery pack to mitigate propagation of the thermal event throughout the battery pack, the bracket comprising:
a bracket body formed of a first material on a first major surface of the body, and a second material on an opposing second major surface of the body, the first material having a larger coefficient of thermal expansion than the second material, wherein an increase in temperature above a defined threshold experienced by the body causes the first material to expand more than the second material, wherein the bracket body is configured to, upon exceeding said defined threshold, transition from a first equilibrium state representing a closed, conductive position to a second equilibrium state representing an open, isolation position.