Patent ID: 6593025
Filing Date: 2003-07-15
Classification: H01M,Y02E

Abstract:
A battery including a pressure-sensitive current-interruption structure, comprising:a plate-shaped power-generating unit; a casing hermetically sealed and containing the power generating unit, deformable by an internal pressure; a plurality of lead terminals which are electrical paths from the power generating unit to the outside of the casing; a sealed part, which is a part of the casing, disposed at an end of the power generating unit and formed thinner than the thickness of the casing at a part here the power generating unit is contained; and an interruption structure including: an operating member disposed outside the casing, at least one end of the operating member being disposed above or under the power generating unit and displaceable toward the outside as the internal pressure rises; a fixing member having at least one part thereof being positioned opposing the operating member across the power generating unit; an insulative holding member disposed above or under the sealed part and fixed to the fixing member; and an element having an electrically conductive path, held by the holding member, the element being electrically connected to at least one of the lead terminals at one end of the element and to an external electrode at the other end of the element, wherein the other end of the operating member is positioned in the vicinity of the element, said other end of the operating member being displaced in accordance with the displacement of said one end of the operating member caused by the internal pressure, thereby cutting the element when displaced by more than a predetermined value.