Patent ID: 7867663

Claim:
A heat exchange system for battery packs, which controls the temperature of a medium- or large-sized battery pack including a plurality of unit cells, such that the battery pack can be operated under the optimum operating conditions, wherein the heat exchange system comprises: an air inlet port and an air outlet port formed at one side of a housing surrounding the outer surface of the battery pack so as to form a predetermined flow channel, through which air flows, and in which air introduced from the air inlet port, passes through the battery pack and then flows to the air outlet port; a driving fan mounted in the flow channel for driving the air to flow through the flow channel; a Peltier element mounted at the air inlet port for controlling the temperature of air introduced into the air inlet port; first and second heat conduction members attached to opposite major surfaces of the Peltier element, at which an endothermic reaction and an exothermic reaction occur depending upon directions in which electric current is supplied to the Peltier element, the first heat conduction member being located inside the air inlet port, and the second heat conduction member being located outside the air inlet port; wherein the air inlet port and the air outlet port are adjacent to each other while the Peltier element is interposed between the air inlet port and the air outlet port, and the second heat conduction member is located inside the air outlet port.