US 12,467,976 B2
System and method for determining a battery condition
Evan Murphy, San Francisco, CA (US); Patrick Herring, San Francisco, CA (US); Daniel Vickery, San Francisco, CA (US); Elizabeth Goldberg, San Francisco, CA (US); Jacqueline Maslyn, San Francisco, CA (US); Matthew Bohan, San Francisco, CA (US); Shyam Srinivasan, San Francisco, CA (US); Dustin Summy, San Francisco, CA (US); Zachary Gima, San Francisco, CA (US); Brian Goodall, San Francisco, CA (US); and Mark Tobenkin, San Francisco, CA (US)
Assigned to Zitara Technologies, Inc., San Francisco, CA (US)
Filed by Zitara Technologies, Inc., San Francisco, CA (US)
Filed on Feb. 22, 2024, as Appl. No. 18/584,144.
Application 18/584,144 is a continuation of application No. 18/078,814, filed on Dec. 9, 2022, granted, now 11,971,454.
Claims priority of provisional application 63/388,141, filed on Jul. 11, 2022.
Claims priority of provisional application 63/287,819, filed on Dec. 9, 2021.
Prior Publication US 2024/0192276 A1, Jun. 13, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 11/30 (2006.01); G01R 31/367 (2019.01); G01R 31/385 (2019.01); G01R 31/396 (2019.01)
CPC G01R 31/367 (2019.01) [G01R 31/385 (2019.01); G01R 31/396 (2019.01)] 18 Claims
OG exemplary drawing
 
1. A method for determining whether a battery is experiencing a thermal disconnection comprising:
at each of a plurality of times, measuring a temperature proximal the battery;
for each temperature, estimating a local temperature of a battery cell of the battery by:
detecting a plurality of temperature jumps in the plurality of measured temperatures, wherein each temperature jump of the series of temperature jumps exceeds a threshold temperature jump amplitude; and
calculating a thermal resistance at each of the temperature jumps; and
performing a statistical test on the plurality of local temperatures to determine whether the battery is experiencing the thermal disconnection comprising performing a statistical test on the plurality of thermal resistances to determine whether the battery is experiencing the thermal disconnection.