US 9,812,879 B2
Battery thermal monitoring system
John Russell Gravett, Wildomar, CA (US); and Brian Joseph Green, Murrieta, CA (US)
Filed by John Russell Gravett, Wildomar, CA (US); and Brian Joseph Green, Murrieta, CA (US)
Filed on Jul. 21, 2015, as Appl. No. 14/805,210.
Prior Publication US 2017/0025868 A1, Jan. 26, 2017
Int. Cl. H02J 7/04 (2006.01); H02J 7/00 (2006.01); G01K 7/22 (2006.01); H01M 10/48 (2006.01); H01M 10/06 (2006.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01)
CPC H02J 7/0031 (2013.01) [G01K 7/22 (2013.01); H01M 10/06 (2013.01); H01M 10/425 (2013.01); H01M 10/443 (2013.01); H01M 10/486 (2013.01); H02J 7/0091 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A system for monitoring thermal conditions during battery charging, comprising:
a first sensor configured to detect ambient temperature;
a second sensor connected to a battery, the second sensor configured to detect battery charging temperature at the battery;
a first relay connected to the battery and a charging source
a second relay connected to a processor and an alarm configured to provide notification of an alarm condition; and
the processor connected to the first sensor, the second sensor, the first relay, and to the second relay, the processor configured to:
receive a battery charging temperature from the second sensor,
determine a temperature difference value between the battery charging temperature and the ambient temperature, and
in response to the temperature difference value exceeding a predetermined difference value, send a signal to the first relay to disconnect the battery from the charging source and activate the second relay to issue a warning alarm, prior to a thermal runaway condition associated with the temperature difference value between the battery charging temperature and the ambient temperature being met.