US 12,249,698 B2
Method and device for managing the thermal behavior of a battery
Nicolas Guillet, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed on Sep. 14, 2021, as Appl. No. 17/447,609.
Claims priority of application No. 20 09305 (FR), filed on Sep. 15, 2020.
Prior Publication US 2022/0085431 A1, Mar. 17, 2022
Int. Cl. H01M 10/48 (2006.01); G01R 31/374 (2019.01); G01R 31/387 (2019.01); G01R 31/392 (2019.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01); H01M 10/613 (2014.01); H01M 10/633 (2014.01)
CPC H01M 10/486 (2013.01) [G01R 31/374 (2019.01); G01R 31/387 (2019.01); G01R 31/392 (2019.01); H01M 10/443 (2013.01); H01M 10/613 (2015.04); H01M 10/633 (2015.04); H01M 2010/4271 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for managing thermal behavior of a battery, comprising:
determining a time constant of the battery, the time constant corresponding to a time interval existing between a moment at which thermal energy is given off by the battery and a moment at which a corresponding rate of heat flow is measured at a surface of the battery,
measuring electrical power passing through the battery;
employing a thermal model of the battery, wherein the model is configured to estimate, at each point in time, a thermal power generated by the battery depending on the measured electrical power passing through the battery, the thermal model comprising a charging law and a discharging law, each law being based on a state of charge of the battery and on a temperature of the battery and incorporating the time constant (τ) of the battery, and
controlling the thermal power generated by the battery comprising determining the thermal power using the model and controlling the electrical power passing through the battery based upon the determined thermal power.