Appeal No. 2006-2161
Application No. 10/248,326
of heat transfer working fluid through the heat transfer
passages about the battery cells is to create an even
temperature distribution across all battery cells.
Specification at 2, ¶ 6. The specification explains that a
significant temperature differential exists across the
battery cells when unidirectionally flowing coolant passes
through the passages about the battery cells. Specification
at 2, ¶ 5. The specification cautions that an “uneven
temperature profile can cause non-homogeneous battery
electric chemical reaction rates across the cell stack and
result in accumulative degradation of battery cells.”
Specification at 1-2, ¶ 4.
Lake describes “a battery cooling system for
efficiently reusing the heat generated by an electric
vehicle battery assembly.” Lake, col. 1, l. 8-12. Lake’s
battery cooling system comprises:
• a battery pack;
• a coolant;
• a reservoir;
• a pump;
• a controller of a heating, ventilating, and air-
conditioning (HVAC) system for an automobile; and
• a heat exchanger.
Lake, col. 23, l. 34-47.
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