Cell
AssigneeJapan Storage Battery Co., Ltd.
InventorsTakefumi Inoue, Hiroaki Yoshida
Life of this patent
Estimating the term…
Abstract
A cell is provided in which a flat plate portion of a collector portion is prevented from making contact with a positive or negative electrode in a power generating element to cause a short circuit, the application area of a material can be widened, and edge portions of an electrode plate can be surely connected and fixed to a collector. In a collector portion of a negative or positive collector, press holds of a gap (groove) which opens on the side of a basal portion are formed by bending back a substantially vertical metal plate at an apex. The portion between adjacent press holds of the collector portion is formed into a flat plate-like shape. A window is formed in each of the press holds, or a reduced thick portion is formed in a part of each of the press holds.
Claims8
A cell with collectors, wherein a collector portion of each of the collectors comprises:
- a plurality of press holds in each of which two metal plate portions are projected to be opposed via a gap that opens on a side of a basal portion, by bending back a substantially vertical metal plate at an apex;
- and
- horizontal flat plate portions which are formed by a flat metal plate portion and through which adjacent ones of said press holds are coupled to each other on the side of the basal portion;
- a winding axis of a wound type power generating element having ends and said collector portions respectively placed on said ends, with respectively directing the basal portions to the ends, said power generating element being configured by winding strips of positive and negative electrodes with a strip separator therebetween being mutually shifted in the winding axis direction;
- and
- edge portions of said positive and negative electrodes protruding at the ends of the winding axis of said power generating element and pressingly held in nearest press holds of said collector portions to be connected and fixed.
A cell comprising:
- a power generating element in which a plurality of positive and negative electrode plates are wound, each of said plurality of positive and negative plates having an edge portion;
- a separator positioned therebetween each of said plurality of plates and said edge portion of one of said electrode plates protrude from said edge portion of another one of said electrode plates;
- and
- a plurality of collectors respectively connected to said edge portions, wherein each of said collectors is formed by bending a metal plate to have plural groove portions and horizontal flat plate portions which are used for pressingly holding and bonding said edge portion of either of said electrode plates, and a reduced thickness portion is formed in a part of each of said groove portions.
Dependencies are inferred from the claim text.