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Flexible battery

專利號(hào)
US10096803B2
公開(kāi)日期
2018-10-09
申請(qǐng)人
Panasonic Intellectual Property Management Co., Ltd.（JP Osaka）
發(fā)明人
Mitsuhiro Iseri; Tomohiro Ueda; Yuya Asano; Haruhisa Yagi
IPC分類
H01M2/02; H01M10/0585; H01M10/04
技術(shù)領(lǐng)域
laminate,protrusion,film,in,wrinkling,wave,pouch,battery,curved,side
地域： Osaka

摘要

A thin pouch battery, which is used as a power source of a portable electronic apparatus, a portable electronic terminal, or the like, includes protrusions, into which an electrode group is inserted, formed in both a laminate film on the upper side and a laminate film on the lower side. Then, concentrically concave and convex wave shapes (concentric crest ridges or trough furrows) are formed on the top surface of each of the protrusions such that the protrusion can extend or shrink in any direction, or the protrusion has a side surface that is gradually inclined and a wave shape is formed on the side surface of the protrusion.

說(shuō)明書(shū)

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TECHNICAL FIELD

The technical field relates to a flexible battery.

BACKGROUND

A compact portable electronic apparatus or portable electronic terminal such as a smart, phone or a wristwatch type terminal uses a thin, pouch-type battery as a power source.

The thin pouch-type battery has a configuration in which an electrode group including sheet-like positive and negative electrodes and a separator is enveloped between two laminate films, each of which is made of a metal foil or a resin layer having a thickness of about 0.1 mm, and a liquid, gel, or solid electrolyte is injected therein. For the laminate film, a material, which prevents the electrolyte therein from leaking out in a case where the battery is deformed and damaged from an impact or the like due to an external force, in a case of deterioration due to the service life of the laminate film or a temperature, change, or the like, is selected.

Recently, many electronic apparatuses are worn directly on a human body, and for example, some apparatuses are curved, in advance so as to be fitted to a wrist. Therefore, the battery needs to be also curved so as to be fitted to the shape. Accordingly, there is a demand for a thinner and further flexible battery as such a battery.

A thin pouch-type battery in the related art has a wave section formed on the entire laminate film, which has durability but does not have good elasticity, thereby configured to enhance flexibility of the entire laminate film for example, see Japanese Patent Unexamined Publication No. 2000-173559).

權(quán)利要求

1
What is claimed is:1. A battery comprising:laminate films that interpose an electrode group including an electrode, a separator, and an electrolyte,wherein, on a top surface of a protrusion of the laminate films, in which the electrode group is interposed therebetween, a plurality of concave and convex portions, which are not continuous in straight lines from one end of the top surface to the other end thereof, are formed,wherein the plurality of concave or convex portions are in a state of being alternately parallel to side surfaces of the protrusion in the right-left direction and to side surfaces thereof in the front-rear direction, and of being continuous in a step shape.2. The battery of claim 1,wherein a cross section of the laminate film has a wave shape and a top ridge of a wave crest and a furrow of a wave trough are curved and continuous to each other.3. The battery of claim 1,wherein a cross section of the laminate film has a wave shape and a top ridge of a wave crest and a furrow of a wave trough are continuous to each other to have a circular shape, and the circular waves are dotted around.4. The battery of claim 1,wherein a partial cross section of the laminate film has a concave or convex shape and the concave or convex shapes are dotted around.5. The battery of claim 1,wherein the protrusion of the laminate film has a side surface that is set to be inclined at an angle of equal to or less than 60°.6. The battery of claim 5,wherein the protrusion of the laminate film has the side surface on which concave or convex shapes or wave shapes are formed.7. The battery of claim 2,wherein after or while the protrusion is formed on the laminate film, plurality of concave and convex portions are formed.8. The battery of claim 1,wherein, of the laminate films, the protruding shapes are formed on both of one laminate film and the other laminate film facing the one laminate film.
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