US 12,344,103 B2
Fire protection device for an at least partially electrically operated motor vehicle, and fire sensor
Mathias Zilly, Pfinztal (DE); and Thomas Fritz, Löchgau (DE)
Assigned to Dr. Ing. h. c. F. Porsche AG, Stuttgart (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Jun. 29, 2021, as Appl. No. 17/362,804.
Claims priority of application No. 10 2020 121 193.7 (DE), filed on Aug. 12, 2020.
Prior Publication US 2022/0048392 A1, Feb. 17, 2022
Int. Cl. B60L 3/00 (2019.01); A62C 3/16 (2006.01); A62C 37/36 (2006.01); B60L 58/10 (2019.01); G01R 31/00 (2006.01)
CPC B60L 3/0046 (2013.01) [A62C 3/16 (2013.01); A62C 37/04 (2013.01); B60L 58/10 (2019.02); G01R 31/00 (2013.01); G01R 31/005 (2013.01); G01R 31/006 (2013.01); G01R 31/008 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A fire protection device for detecting a fire caused by a battery device in a motor vehicle that at least partially is operated electrically, the battery device having at least one battery module, the fire protection device comprising:
a battery module housing having a base, a cover and a side part extending between the base and the cover, the battery module housing surrounding the at least one battery module;
at least one fire sensor having at least one electrically conducting monitoring current conductor that is arranged integrally and non-removably on an outer surface of the battery module housing, the at least one electrically conducting monitoring current conductor having more than two curved or angled tracks extending in a meandering manner over at least two-thirds of a length and at least two-thirds of a width of the battery module housing and being configured to be destroyed and interrupted by a fire;
a monitoring system connected to the at least one monitoring current conductor to form a monitoring current circuit configured to detect the fire by means of an interruption of the monitoring current conductor; and
a warning device connected to the monitoring system and configured for generating a warning upon detection of the fire by the monitoring system.