Patent ID: 11919419
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 11:
12. A system to manage thermal propagation in an energy storage device of a battery electric vehicle, the method comprising:
a plurality of distinct battery cell module groups each separately providing electrical power to the vehicle propulsion system;
a vehicle propulsion system operable to convert power from the plurality of distinct battery cell module groups to provide motive power for the battery electric vehicle;
a chiller module operable in cooling mode to transfer heat away from the plurality of distinct battery cell module groups and alternately operable in reverse mode to provide heat to the plurality of distinct battery cell module groups; and
a computerized battery cell module groups controller operative to,
monitor conditions within the plurality of distinct battery cell module groups;
determine occurrence of an abnormal event within one of the plurality of distinct battery cell module groups based upon the monitored conditions;
control operation of the battery electric vehicle based upon the determined occurrence of the abnormal event; and
operate the chiller module in cooling mode to transfer heat away from the plurality of distinct battery cell module groups during occurrence of the abnormal event and operate the chiller module in reverse mode to provide heat to the plurality of distinct battery cell module groups during a cold start of the battery electric vehicle when the abnormal event is not occurring, the vehicle propulsion system is not providing motive power for the battery electric vehicle, and the battery electric vehicle is stationary.