US 2014/0212718 A1Published application

Prismatic battery

AssigneeSanyo Electric Co., Ltd.

InventorsYoshinori Yokoyama, Yasuhiro Yamauchi

Life of this patent

Estimating the term…

Loading patent…

Abstract

Provided is a prismatic battery resistant to the development of short circuits. The prismatic battery has a structure in which a flat electrode including a positive electrode collector with a positive electrode substrate exposed portion and a negative electrode collector with a negative electrode substrate exposed portion is accommodated in an outer can. At least one of the positive electrode collector and the negative electrode collector has a rib. The rib is provided with an easily bendable part (a thin wall, groove, opening, or notch). The rib is bent at the easily bendable part when force is applied to the tip of the rib to prevent the tip from reaching the outer can by means of an insulation sheet to avoid the development of short circuits between the negative electrode collector and the outer can.

Claims6

Dependent claims

A prismatic battery comprising:

a flat electrode assembly provided with a positive electrode substrate exposed portion laminated on one end thereof and a negative electrode substrate exposed portion laminated on the other end thereof, the flat electrode assembly being accommodated in an outer can;
a current collector which is connected with an outermost surface of at least one of the laminated positive electrode substrate exposed portion and the laminated negative electrode substrate exposed portion in a laminated direction;
the current collector being provided with the body thereof and a rib extended in a direction almost perpendicular to the body of the current collector, wherein
an insulation member is disposed between the rib and the outer can,
the rib is formed with an easily bendable part provided with a thin-wall part, a groove part, and an opening part or a notch part which narrows the width of the rib in a region excluding a tip part of the rib.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/241,854Filed 24 Aug 2012
Priority: JP 2011-18851431 Aug 2011
Published: 31 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H01M 10/0431
Construction or manufacture in general: cells with wound or folded electrodes
H01M 50/103
Characterised by their shape or physical structure: prismatic or rectangular
H01M 50/176
Adapted for the shape of the cells: for prismatic or rectangular cells
H01M 50/55
Characterised by the disposition of the terminals on the cells: on the same side of the cell