US 11,680,918 B2
Thermal gradient battery monitoring system and methods
David Wang, San Jose, CA (US); Arun Raghupathy, Pleasanton, CA (US); James Robert Lim, Mountain View, CA (US); Ihab A. Ali, Cupertino, CA (US); and Chang Hong Ye, San Francisco, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Sep. 25, 2020, as Appl. No. 17/32,679.
Prior Publication US 2022/0099606 A1, Mar. 31, 2022
Int. Cl. G01N 25/72 (2006.01); G01R 31/371 (2019.01); G01R 31/392 (2019.01)
CPC G01N 25/72 (2013.01) [G01R 31/371 (2019.01); G01R 31/392 (2019.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving a first temperature value from a first temperature sensor associated with a battery and a second temperature value from a second temperature sensor associated with a heat source;
determining, based on the first temperature value and the second temperature value, a first temperature gradient;
increasing a temperature of the heat source by a predetermined amount;
receiving, based on the increase of the temperature of the heat source, an increased first temperature value and an increased second temperature value;
determining, based on the increased first temperature value and the increased second temperature value, a second temperature gradient;
comparing the first temperature gradient and the second temperature gradient to determine a thermal gradient difference; and
transmitting, based on the thermal gradient difference, an alert to a device associated with a user, the alert indicating a health of the battery.