Patent ID: 7297440
Filing Date: 2007-11-20
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A battery pack comprising: a cell; a plastic protective layer bonded to the surface of the cell, the plastic protective layer being formed of a solidified polyurethane emulsion; and a holder assembly fixed to the end of the cell, the holder assembly comprising a first holder and a second holder fitted in the first holder; and a plurality of output terminals interposed between the first holder and the second holder so as to fix the output terminals in position; wherein the periphery of the holder is formed so as to follow the periphery of the cell, the polyurethane emulsion is coated over an outer peripheral surface of the cell and an outer peripheral surface of the holder such that the cell and the holder are connected to each other at their interface by the plastic protective layer coating, the holder assembly forms an attaching portion and a non-attaching portion, both of which are formed by the periphery of the holder assembly, and the cross-sectional area of the attaching portion is smaller than that of the non-attaching portion, and the plastic protective layer is coated on the attaching portion and not on the non-attaching portion, and the periphery of the holder assembly is substantially flush with the periphery of the cell.