Patent ID: 8216711
Filing Date: 2012-07-10
Classification: H01M,Y02E

Abstract:
1. A battery pack in which: cell assemblies are stacked; each cell assembly includes a cell case; each cell case includes windows in opposite surfaces thereof such that unit cells are exposed, and recesses in opposite long lateral faces thereof such that the windows communicate with an outside; and the windows and the recesses define cooling passages between the stacked cell assemblies, wherein each cell assembly comprises: first and second cases each including the windows and recesses, and assembled so as to define an inner space; unit cells received in the inner space defined by the first and second cases; and wherein a fixing window member fixing the unit cells to inner surfaces of the first and second cases under pressure, and the fixing window member comprises a frame structure with a window, is interposed between the unit cells in the inner space defined by the first and second cases, and fixes the unit cells to the first and second cases, and exposes intermediate parts of the unit cells through the window thereof, is interposed between circumferences of the opposite unit cells, and fixes the circumferences of opposite unit cells to the inner surfaces of the first and second cases under pressure.