Patent ID: 11951800
Assignee: CARRIER CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 6:
7. A method of operating a transportation refrigeration unit, the method comprising:
powering at least one component of the transportation refrigeration unit using an energy storage device composed of a first energy storage pack and a second energy storage pack, wherein the at least one component of the transportation refrigeration unit draws electrical power from the energy storage device at an operating power;
detecting a return air temperature of air returning to the transportation refrigeration unit using a return air temperature sensor;
determining a state of charge of the first energy storage pack and a state of charge of the second energy storage pack; and
selecting the first energy storage pack or the second energy storage pack to power the at least one component of the transportation refrigeration unit in response to an operating power, a state of charge of the first energy storage pack, and a state of charge of the second energy storage pack, wherein only one of the first energy storage pack and the second energy storage pack can power the at least one component of the transportation refrigeration unit at a single time;
selecting the first energy storage pack to be charged by an electrical power source when the first energy storage pack is not powering the at least one component of the transportation refrigeration unit;
selecting the second energy storage pack to be charged by an electrical power source when the second energy storage pack is not powering the at least one component of the transportation refrigeration unit;
wherein the first energy storage pack includes a battery system and the second energy storage pack includes a battery system.