Patent ID: 9219288
Filing Date: 2015-12-22
Classification: H01M,Y02E,Y02P

Abstract:
1. A secondary battery comprising: a circuit board comprising a first connection pad on a first surface of a substrate, and a second connection pad on the first surface of the substrate, a circuit interconnection extending along on the first surface of the substrate and electrically connected to the first and second connection pads, and an integrated circuit on the first surface of the substrate and electrically connected to the first and second connection pads through the circuit interconnection, both the first and second connection pads being spaced apart from the integrated circuit in a first direction, the integrated circuit being electrically connected to the first connection pad through a first portion of the circuit interconnection and electrically connected to the second connection pad through a second portion of the circuit interconnection; at least one first electrode layer comprising a first electrode portion covering and surrounding the first portion of the circuit interconnection and overlapping the second portion of the circuit interconnection and covering an outer side of the integrated circuit such that a perimeter of the first electrode layer surrounds a perimeter of the integrated circuit, and a first tab portion connected to the first connection pad, the first electrode portion and the first tab portion being an integral layer directly contacting the first connection pad; at least one second electrode layer comprising a second electrode portion covering and surrounding the second portion of the circuit interconnection and overlapping the first portion of the circuit interconnection and covering the outer side of the integrated circuit such that a perimeter of the second electrode layer surrounds the perimeter of the integrated circuit, and a second tab portion connected to the second connection pad, the second electrode portion and the second tab portion being an integral layer directly contacting the second connection pad; and a separator covering the first electrode portion and disposed between the first electrode portion and the second electrode portion, the separator overlapping the first and second portions of the circuit interconnection and covering the outer side of the integrated circuit such that a perimeter of the separator surrounds the perimeter of the integrated circuit, wherein a stacked assembly comprising the first electrode layer, the separator, and the second electrode layer is stacked in a stacking direction perpendicular to the first direction on the integrated circuit and a first surface of the circuit board, and wherein the at least one second electrode layer does not overlap the first tab portion.