Patent ID: 7859844

Claim:
An energy storage cooling system for a vehicle energy storage pack, the vehicle energy storage pack including a plurality of ultracapacitor cells and an external housing configured to enclose the plurality of ultracapacitor cells, the energy storage cooling system comprising: a plurality of terminal heat exchangers, each terminal heat exchanger thermally coupled to one terminal of one of the plurality of ultracapacitor cells and configured to convect heat from its respective one terminal to a gas coolant, the plurality of terminal heat exchangers located inside the external housing; a blower including a blower inlet and a blower exhaust, the blower configured to blow the gas coolant from the blower exhaust across the plurality of terminal heat exchangers with the gas coolant convecting heat from the plurality of terminal heat exchangers, the blower located inside the external housing; a liquid coolant heat exchanger configured to receive and cool heated gas coolant, and further configured to feed cooled gas coolant to the blower inlet, the liquid coolant heat exchanger located inside the external housing; a closed loop gas coolant flow path inside the external housing, the closed loop gas coolant flow path configured to direct the gas coolant from the blower across the plurality of terminal heat exchangers and to the liquid coolant heat exchanger; an external liquid cooling source configured to receive heated liquid coolant from the liquid coolant heat exchanger and return cooled liquid coolant back to the liquid coolant heat exchanger; a liquid coolant loop interfacing with the external liquid cooling source and the liquid coolant heat exchanger, liquid coolant loop configured to circulate liquid coolant between the liquid coolant heat exchanger and the external liquid cooling source.