US 11,876,246 B2
Detector for early detection of battery fire and/or an overheated condition in a battery
Stefan Coreth, Roanoke Rapids, NC (US); Terry Simpson, Wake Forest, NC (US); Amanda J. Daly, Cary, NC (US); and Sandip Dhanani, Knightdale, NC (US)
Assigned to KIDDE TECHNOLOGIES, INC., Wilson, NC (US)
Filed by Kidde Technologies, Inc., Wilson, NC (US)
Filed on Nov. 22, 2021, as Appl. No. 17/532,370.
Application 17/532,370 is a division of application No. 16/514,648, filed on Jul. 17, 2019, granted, now 11,183,733.
Prior Publication US 2022/0085454 A1, Mar. 17, 2022
Int. Cl. H01M 50/383 (2021.01); H01M 50/30 (2021.01); H01M 10/48 (2006.01); G01R 31/396 (2019.01); G01R 31/382 (2019.01)
CPC H01M 50/383 (2021.01) [G01R 31/382 (2019.01); G01R 31/396 (2019.01); H01M 10/48 (2013.01); H01M 10/482 (2013.01); H01M 10/486 (2013.01); H01M 50/394 (2021.01)] 9 Claims
OG exemplary drawing
 
1. A lithium ion battery, comprising:
a body defining an interior in which a lithium ion battery cell is disposable;
a fire and/or overheated condition detector comprising a chamber defining a detection space, a temperature sensor proximate to the detection space, gas detection assemblies configured to detect gases through absorption in the detection space and a smoke detection assembly configured to detect particle scattering in the detection space to discriminate smoke particles from nuisance particles;
a shroud attached to the body and configured to direct gases, smoke particles and nuisance particles from the interior of the body toward the fire and/or overheated condition detector; and
a controller configured to execute early fire and/or overheated condition detection while retaining nuisance discrimination based on readings of the temperature sensor, the gas detection assemblies and the smoke detection assembly,
each gas detection assembly comprises a light source at a first side of the detection space and a photodetector at a second side of the detection space, and
the smoke detection assembly comprises first and second light sources and a photodetector at a first end of the detection space and a mirror optically interposed between the first and second light source and the photodetector at a second end of the detection space.