US 12,326,481 B2
Method and system for modelling ultracapacitor
Suryanarayana Bhamidipati, Karnataka (IN); Vijetha Jain, Bangalore (IN); and Gladson Malekar, Davangere (IN)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Filed by Siemens Aktiengesellschaft, Munich (DE)
Filed on May 26, 2023, as Appl. No. 18/202,729.
Prior Publication US 2024/0393409 A1, Nov. 28, 2024
Int. Cl. G01R 31/12 (2020.01); G01R 31/64 (2020.01); G06F 30/367 (2020.01); H01G 11/08 (2013.01)
CPC G01R 31/64 (2020.01) [G06F 30/367 (2020.01); H01G 11/08 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for modelling an ultracapacitor, the method comprising:
obtaining, from a capacitor modelling apparatus, at least one measured charge-discharge plot for a given ultracapacitor to be modelled, wherein the capacitor modelling apparatus generates the at least one measured charge-discharge plot by providing one or more constant currents and/or one or more constant voltages to one or more of the given ultracapacitors utilized therein;
generating, in a simulation platform, at least one simulated charge-discharge plot by using same values for the one or more constant currents and/or the one or more constant voltages in a circuit model with an initial set of values for simulated capacitors and simulated resistors in a Resistor-Capacitor ladder based electrical equivalent circuit model configured to approximate behaviour of the given ultracapacitor therein;
optimizing by changing the initial set of values to converge the at least one simulated charge-discharge plot to the at least one measured charge-discharge plot; and
determining a final set of values for the simulated capacitors and the simulated resistors in the RC ladder based electrical equivalent circuit model of the given ultracapacitor based on the at least one simulated charge-discharge plot substantially converging to the at least one measured charge-discharge plot.