Thermal management of battery systems

A system for temperature control in a battery system configured to provide electrical power to a mobile machine from a main storage battery comprising:

• a main storage battery configured to receive an electrical charge from an external charger;
• a temperature control system;
• an auxiliary battery;
• a processor;
• and
• a memory storing one or more instructions, that when executed by the processor cause the system to:
• enable a sleep mode, the sleep mode causing the battery system to maintain a capability to control a temperature of the main storage battery of the battery system with the temperature control system while operation of the mobile machine is deenergized;
• monitor battery temperature of the main storage battery using the temperature control system, wherein the temperature control system is powered by the auxiliary battery;
• activate an externally powered thermal battery management mode when connected to external power sources to heat or cool the main storage battery based on the battery temperature of the main storage battery as determined by the temperature control system, to charge the main storage battery, or to charge the auxiliary battery;
• and
• activate an internally powered battery management mode when not connected to external power sources to heat or cool the main storage battery based on the battery temperature of the main storage battery, the internally powered battery management mode being different than the externally powered thermal battery management mode.

A method of thermally managing a battery system of a mobile machine, the method comprising:

• enabling a sleep mode using a sleep mode enabling selection, the sleep mode causing the battery system to maintain a capability to control a temperature of a main storage battery of the battery system with a temperature control system while operation of the mobile machine is deenergized;
• monitoring battery temperature of the main storage battery using the temperature control system, wherein the temperature control system is configured to operate between 0 to 45 degrees Celsius;
• activating an externally powered thermal battery management mode when connected to external power sources to heat or cool the main storage battery based on the battery temperature of the main storage battery as determined by the temperature control system, to charge the main storage battery, or to charge an auxiliary battery;
• and
• activating an internally powered battery management mode when not connected to external power to heat or cool the main storage battery based on the battery temperature of the main storage battery, the internally powered battery management mode being different than the externally powered thermal battery management mode.