US 12,136,716 B1
Systems and methods for simulating operation of a battery pack
Xiao Hu, Ann Arbor, MI (US); Omkar Champhekar, Evanston, IL (US); Anil Wakale, Pune (IN); and Saeed Asgari, Westborough, MA (US)
Assigned to Ansys, Inc., Canonsburg, PA (US)
Filed by Ansys, Inc., Canonsburg, PA (US)
Filed on Aug. 15, 2023, as Appl. No. 18/450,013.
Application 18/450,013 is a division of application No. 17/177,465, filed on Feb. 17, 2021, granted, now 11,764,419.
Int. Cl. H01M 10/613 (2014.01); H01M 10/6554 (2014.01); H01M 50/204 (2021.01)
CPC H01M 10/613 (2015.04) [H01M 10/6554 (2015.04); H01M 50/204 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A method of simulating operation of a battery pack, the method comprising:
performing thermal simulation of a battery module comprising a plurality of battery cells, the thermal simulation computing temperature values at a plurality of locations within respective battery cells of the battery module as thermal results;
using the thermal results to generate a reduced order thermal model for the battery module, the reduced order thermal model comprising a state space model that provides temperature outputs associated with respective battery cells of the battery module based on past and current heat inputs associated with the respective battery cells; and
simulating operation of the battery pack by operating respective thermal models and electrical models of the battery module and other battery modules, wherein outputs of the thermal model are connected to inputs of a particular electrical model, outputs of the particular electrical model are connected to inputs of the thermal model, and a coolant model is connected to inputs of the thermal model and other thermal models associated with the other battery modules.