Patent ID: 7943253

Claim:
A sealed battery comprising: a flat electrode assembly having a plurality of positive electrode substrates exposed at one end and a plurality of negative electrode substrates exposed at the other end; and a collector and a collector receiving part which are attached to both sides of at least one of the plurality of positive electrode substrates and the plurality of negative electrode substrates, at least one of the positive electrode substrates and the negative electrode substrates, the collector and the collector receiving part each being made of copper or a copper alloy or made of aluminum or an aluminum alloy, the collector and the collector receiving part each having: a planar part including a part in contact with and resistance-welded to the corresponding substrates; a first bent part extending from the planar part and bent at a bottom side of the substrates into a direction away from the substrates; and a second bent part provided at a leading side of the substrates; and the second bent part of the collector and the second bent part of the collector receiving part at the leading side of the substrates being allocated at positions away from each other; the collector and the collector receiving part each having an edge part at a bent direction of the second bent part; and wherein the edge part at the bent direction of the second bent part of the collector and the edge part at the bent direction of the second bent part of the collector receiving part are not connected directly at the leading side of the substrate.