US 2008/0280199 A1 · MODULE

Abstract

A flat secondary battery having a fusion-bonded sealing type laminate film as an armored body tends to be inferior in sealing reliability to a flat secondary battery having a welded sealing type can as an armored body, due to a difference in sealing method between the two batteries. Therefore, there has been a large challenge of finding the way to make the sealing reliability of the laminate film secondary battery closer to that of the can type secondary battery. The sealing reliability is improved by further increasing a sealing force without taking any measure to the existing laminate film secondary battery, in such a manner that the fusion bonding area of the existing laminate film secondary battery is sandwiched from upside and downside to be cramped from outside so as to mechanically add a sealing force from outside to the sealing force of the laminate film itself.

Claims24

Dependent claims

A module comprising:

a flat laminate film secondary battery, including a laminate film sealing section area that is fusion-bonded at sides of said battery,
wherein a part or whole of said sealing section area is sandwiched and mechanically clamped by an upside sealing accessory plate and a downside sealing accessory plate,
wherein the upside sealing accessory plate and the downside sealing accessory plate provide in combination a concavo-convex configuration to accommodate an electrode of the flat laminate film secondary battery, and
wherein an external force is provided to the upside sealing accessory plate and the downside sealing accessory plate to sandwich and mechanically clamp the part or whole of said sealing section area.

1 more element

Dependencies are inferred from the claim text.

Module

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Module

Life of this patent

Abstract

Claims24