Cab heater systems for battery electric vehicles

A system for providing cab heat to an electric vehicle, the system comprising:

• a fan;
• an electric heater positioned downstream from the fan;
• a vehicle battery to provide power to the electric heater and the fan;
• and
• a hydrogen combustor positioned downstream from the fan, including:
• a combustion chamber having a combustor inlet and a combustor outlet;
• a hydrogen storage fluidly coupled to the combustor inlet and configured to supply hydrogen to the combustor for combustion;
• and
• a burner for igniting the hydrogen within the combustion chamber to produce heat.

A system for providing heat to the cabin of an electric vehicle, the system comprising:

• a fluid circulation pump;
• one or more cabin heat exchangers;
• a heat transfer tube fluidly connected to the fluid circulation pump and to the one or more cabin heat exchangers;
• and
• an insulated tank comprising:
• a tank heat exchanger fluidly connected to the heat transfer tube;
• a resistance heater;
• and
• a phase change material;
• wherein in a charging mode, the resistance heater provides heat to the phase change material and to the tank heat exchanger;
• and
• wherein in a heating mode, the fluid circulation pump circulates a heat transfer fluid through the heat transfer tube to the tank heat exchanger, where heat from the tank heat exchanger is absorbed by the heat transfer fluid, and to the one or more cabin heat exchangers, where heat from the heat transfer fluid is absorbed by ambient air in the cabin.