Patent ID: 9040188
Filing Date: 2015-05-26
Classification: H01M,Y02E,Y02P

Abstract:
1. A jelly roll, comprising: a first auxiliary current collector and a second auxiliary current collector, the first auxiliary current collector comprising a first main body formed in a rectangular plate shape and a first mandrel protrusion which is disposed on a first end portion of the first main body and shares same two opposite planar surfaces with the first main body, and the second auxiliary current collector comprising a second main body formed in the rectangular plate shape and a second mandrel protrusion which is disposed on a second end portion of the second main body and shares same two opposite planar surfaces with the second main body, the first mandrel protrusion formed simultaneously together with the first auxiliary current collector as a single integral and monolithic structure and the second mandrel protrusion formed simultaneously together with the second auxiliary current collector as a single integral and monolithic structure, and the first and second first mandrel protrusions protruding away from each other; a mandrel insulating layer electrically insulating the first auxiliary current collector from the second auxiliary current collector and the mandrel insulating layer insulating the first and second auxiliary current collectors from an exterior of the first and second auxiliary current collectors; and an electrode plate comprising a first electrode plate, a second electrode plate and a separator interposed between the first and second electrode plate in order to electrically insulate the first electrode plate from the second electrode plate, and the electrode plate being disposed on an outside surface of the mandrel insulating layer, with the first auxiliary current collector and the second auxiliary current collector wound with the electrode plate so that the mandrel protrusions are exposed to an exterior of the jelly roll.