JP2000182579A - Plate-like polymer electrolyte battery - Google Patents

Plate-like polymer electrolyte battery

Info

Publication number
JP2000182579A
JP2000182579A JP10357648A JP35764898A JP2000182579A JP 2000182579 A JP2000182579 A JP 2000182579A JP 10357648 A JP10357648 A JP 10357648A JP 35764898 A JP35764898 A JP 35764898A JP 2000182579 A JP2000182579 A JP 2000182579A
Authority
JP
Japan
Prior art keywords
plate
polymer electrolyte
electrolyte battery
shaped
reinforcing member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP10357648A
Other languages
Japanese (ja)
Inventor
Yoshiyasu Aoki
良康 青木
Isato Kachi
勇人 加地
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FDK Twicell Co Ltd
Original Assignee
Toshiba Battery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Battery Co Ltd filed Critical Toshiba Battery Co Ltd
Priority to JP10357648A priority Critical patent/JP2000182579A/en
Publication of JP2000182579A publication Critical patent/JP2000182579A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Sealing Battery Cases Or Jackets (AREA)
  • Secondary Cells (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a plate-like polymer electrolyte battery reduced in weight and compacted having mechanical strength endurable to external forces such as impact. SOLUTION: This plate-like polymer electrolyte battery has a plate-like generation element 1 with external connection terminals 2a and 4a, reinforcing body 5 disposed to enclose at least the rim part of the generation element 1 and a polymer seal body 6 for sealing the generation element 1 as it leads- through the external connection terminals 2a and 4a. Here, the reinforcing body 5 is of a frame type, a sheath type or a fit type. Further, the reinforcing body 5 may be sealed on the polymer seal body 6 along with the generation element 1 or may constitute a part of the polymer sealing body 6.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、板状ポリマー電解
質電池に係り、さらに詳しくは薄型で、かつ機械的に補
強された板状ポリマー電解質電池に関する。The present invention relates to a plate-shaped polymer electrolyte battery, and more particularly, to a thin and mechanically reinforced plate-shaped polymer electrolyte battery.

【０００２】[0002]

【従来の技術】たとえば携帯型パーソナルコンピュー
タ、携帯電話機、ビデオカメラなどに代表されるコード
レス電子機器類の小形・軽量化に伴って、その電源であ
る電池については、薄型・軽量で、かつエネルギー密度
が高く、また、繰り返し充放電が可能な二次電池が望ま
れている。そして、このような要望に対して、リチウム
を活物質としたリチウムイオン二次電池が開発され、そ
の実用化が進められている。2. Description of the Related Art With the miniaturization and weight reduction of cordless electronic devices represented by, for example, portable personal computers, mobile phones, video cameras, etc., batteries as power sources have become thinner and lighter and have lower energy density. Therefore, a secondary battery which has a high charge and can be charged and discharged repeatedly is desired. In response to such a demand, a lithium ion secondary battery using lithium as an active material has been developed, and its practical use has been promoted.

【０００３】ところで、リチウムイオン二次電池の場合
は、電解液として、揮発性を有する非水電解液が使用さ
れるため、気密製を保ち易い金属製の外装缶内に、発電
要素を封入する構造が採られている。しかし、前記リチ
ウムイオン二次電池の、さらなる薄型化・軽量化の対応
では、金属製外装缶の小形化や薄型化なども必然的であ
るが、金属製外装缶の加工技術から制約される。In the case of a lithium ion secondary battery, since a nonaqueous electrolyte having volatility is used as an electrolyte, a power generation element is sealed in a metal outer can which is easy to keep airtight. Structure is adopted. However, in order to further reduce the thickness and weight of the lithium ion secondary battery, it is inevitable to reduce the size and thickness of the metal outer can, but this is limited by the processing technology of the metal outer can.

【０００４】上記、二次電池の薄型化・軽量化対策とし
て、シート状の正極および負極の間にポリマー電解質層
を介挿させて板状の発電要素を構成し、この発電要素を
樹脂フィルムや金属薄板などで被覆封止した構成が開発
されている。このように、ポリマー電解質層を使用する
リチウムイオン二次電池は、フリーな電解液の封装を回
避できるため、樹脂フィルムで封止・外装を行うことが
でき、二次電池の薄型化・軽量化などが助長される。As a measure for reducing the thickness and weight of the secondary battery, a plate-like power generation element is formed by interposing a polymer electrolyte layer between a sheet-like positive electrode and a sheet-like negative electrode. A configuration that is covered and sealed with a thin metal plate or the like has been developed. As described above, in the lithium ion secondary battery using the polymer electrolyte layer, since the free electrolyte can be prevented from being sealed, the lithium ion secondary battery can be sealed and packaged with a resin film, thereby making the secondary battery thinner and lighter. Etc. are encouraged.

【０００５】[0005]

【発明が解決しようとする課題】上記樹脂フィルムによ
る封止・外装方式は、二次電池の薄型化・軽量化の助長
だけでなく、二次電池の形状の多様化などを図ることも
可能となる。しかし、一方では、外装を含めてポリマー
電解質二次電池の機械的な強度が低下するため、落下な
どした場合、外装が損傷して外観が損なわれ易いだけで
なく、内部ショートが発生して、不良品になってしまう
という問題がある。つまり、発電要素を封止・外装する
樹脂フィルム（ラミネートフィルム）が薄く、かつ破壊
的な強度も低いため、外的な衝撃などで損傷し易い。ま
た、その外的な衝撃などが発電要素に及び易いため、封
止・外装内における発電要素の位置ズレ、あるいは発電
要素の部分的な離脱などを起こし、ショートを発生する
恐れがある。SUMMARY OF THE INVENTION The above-mentioned resin film encapsulation / exterior method not only facilitates the reduction in the thickness and weight of the secondary battery, but also enables diversification of the shape of the secondary battery. Become. However, on the other hand, because the mechanical strength of the polymer electrolyte secondary battery including the exterior is reduced, if it falls, not only the exterior is easily damaged and the exterior is damaged, but also an internal short circuit occurs, There is a problem that it becomes defective. That is, since the resin film (laminate film) that seals and covers the power generation element is thin and has low destructive strength, it is easily damaged by an external impact or the like. In addition, since the external impact or the like easily reaches the power generation element, the power generation element may be misaligned in the sealing or exterior, or the power generation element may be partially detached, thereby causing a short circuit.

【０００６】本発明は、上記事情に対処してなされたも
ので、軽量・コンパクト化が図られるだけでなく、衝撃
などの外力にも耐え得る機械的な強度を有するポリマー
電解質二次電池の提供を目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a polymer electrolyte secondary battery having not only a light weight and a compact size but also a mechanical strength capable of withstanding an external force such as an impact. With the goal.

【０００７】[0007]

【課題を解決するための手段】請求項１の発明は、外部
接続用端子を備えた板状の発電要素と、前記発電要素の
少なくとも端縁部を囲繞するように配置された補強体
と、前記外部接続用端子を導出しながら発電要素を封止
するポリマー系封止体とを有する板状ポリマー電解質電
池である。According to a first aspect of the present invention, there is provided a plate-like power generating element having an external connection terminal, a reinforcing member disposed so as to surround at least an edge of the power generating element, And a polymer-based sealing body for sealing the power generation element while leading out the external connection terminal.

【０００８】請求項２の発明は、請求項１記載の板状ポ
リマー電解質電池において、補強体が枠体であることを
特徴とする。According to a second aspect of the present invention, in the plate-shaped polymer electrolyte battery according to the first aspect, the reinforcing member is a frame.

【０００９】請求項３の発明は、請求項１もしくは請求
項２記載の板状ポリマー電解質電池において、枠型補強
体がポリマー系封止体の一部を成していることを特徴と
する。A third aspect of the present invention is the plate-shaped polymer electrolyte battery according to the first or second aspect, wherein the frame-shaped reinforcing member forms a part of a polymer-based sealing member.

【００１０】請求項４の発明は、請求項１記載の板状ポ
リマー電解質電池において、補強体が嵌合型であること
を特徴とする。According to a fourth aspect of the present invention, in the plate-shaped polymer electrolyte battery according to the first aspect, the reinforcing member is a fitting type.

【００１１】請求項５の発明は、請求項１ないし請求項
４いずれか一記載の板状ポリマー電解質電池において、
補強体が耐電解液性の樹脂性本体、および樹脂性本体の
主面に貼着された金属板で構成されていることを特徴と
する。According to a fifth aspect of the present invention, there is provided a plate-shaped polymer electrolyte battery according to any one of the first to fourth aspects,
It is characterized in that the reinforcing member is composed of an electrolytic solution-resistant resin body and a metal plate adhered to the main surface of the resin body.

【００１２】請求項６の発明は、請求項１ないし請求項
５いずれか一記載の板状ポリマー電解質電池において、
補強体が複数の分割片で構成されていることを特徴とす
る。請求項１ないし６の発明において、発電要素は、シ
ート状の正極およびシート状の負極を、リチウムイオン
伝導性のポリマー電解質層を介挿させて積層し、かつ外
部接続用端子（正極リード端子及び負極リード端子）を
延出させた構成を採っている。ここで、シート状の正極
は、たとえばアルミニウムの箔もしくは網を集電体と
し、この集電体にニッケル酸リチウム、マンガン酸リチ
ウム、コバルト酸リチウムなどの正極活物質を含む正極
層を担持した構成と成っている。According to a sixth aspect of the present invention, there is provided a plate-shaped polymer electrolyte battery according to any one of the first to fifth aspects,
The reinforcing member is constituted by a plurality of divided pieces. The power generation element according to any one of claims 1 to 6, wherein the sheet-shaped positive electrode and the sheet-shaped negative electrode are laminated with a lithium ion conductive polymer electrolyte layer interposed therebetween, and an external connection terminal (a positive electrode lead terminal and a positive electrode terminal). The negative electrode lead terminal) is extended. Here, the sheet-shaped positive electrode has a configuration in which, for example, an aluminum foil or a net is used as a current collector, and the current collector carries a positive electrode layer containing a positive electrode active material such as lithium nickelate, lithium manganate, and lithium cobaltate. It is made.

【００１３】また、シート状の負極は、銅の箔もしくは
網を集電体とし、この集電体に、コークス系炭素質材料
などの負極活物質を含む負極層を担持した構成と成って
いる。さらに、ポリマー電解質層は、たとえばリチウム
塩を添加した有機溶媒を担持した多孔質ポリプロピレン
フィルムである。The sheet-shaped negative electrode has a structure in which a copper foil or mesh is used as a current collector, and the current collector carries a negative electrode layer containing a negative electrode active material such as a coke-based carbonaceous material. . Further, the polymer electrolyte layer is, for example, a porous polypropylene film supporting an organic solvent to which a lithium salt is added.

【００１４】請求項１ないし６の発明において、実質的
に封止・外装体となることもある補強体は、たとえば口
字型もしくはコ字型の枠体、ジャケット構造体（嵌合型
もしくは鞘型）、あるいは蓋型などが挙げられ、これら
は一体型でもよいし、複数に分割された型であってもよ
い。そして、これらの材質は、たとえばポリエチレン、
ポリプロピレン、ポリプロピレンエチレン、ポリエチレ
ンテレフタレート、ポリカーボネート、ABS 、ポリスチ
レン、繊維系プラスチック、ポリ塩化ビニリデンおよび
ポリ塩化ビニル、塩化ゴム、メチルゴム、ポリイソプレ
ン、ポリブタジェン、ブチルゴム、 SBR、 NBR、ポリイ
ソブチレン、クロロプレン、ネオプレンなどの合成樹脂
類、アルミニウムやステンレス鋼などの金属類、あるい
は合成樹脂層と金属層との複合体が挙げられる。なお、
合成樹脂層と金属層との複合体において、金属層を挟ん
で合成樹脂層を一体的に形成させた場合は、補強体およ
びポリマー系封止体を兼ねさせることができる。In the first to sixth aspects of the present invention, the reinforcing member, which may be substantially a sealing / exterior, is, for example, a square-shaped or U-shaped frame, a jacket structure (fitting type or sheathed type). Type) or a lid type, and these may be an integral type or a type divided into a plurality. And these materials are, for example, polyethylene,
Polypropylene, polypropylene ethylene, polyethylene terephthalate, polycarbonate, ABS, polystyrene, fiber plastics, polyvinylidene chloride and polyvinyl chloride, chloride rubber, methyl rubber, polyisoprene, polybutadiene, butyl rubber, SBR, NBR, polyisobutylene, chloroprene, neoprene, etc. Examples include synthetic resins, metals such as aluminum and stainless steel, and a composite of a synthetic resin layer and a metal layer. In addition,
In the case where the synthetic resin layer is integrally formed with the metal layer interposed in the composite of the synthetic resin layer and the metal layer, the composite body can serve both as a reinforcing member and a polymer sealing member.

【００１５】ここで、補強体は、上記発電要素の端縁部
の全周、もしくはコーナー端縁部に対接する形で嵌合的
に配置され、外部衝撃に対する発電要素の端縁部の保護
・補強を図るものである。そして、この補強体の厚さな
どは、補強機能からして材質との兼ね合いで、適宜、選
択・設定される。また、発電要素から延設された入出力
端子（外部接続用リード）を導出するため、補強体の一
部を切り離した形としてある。Here, the reinforcing member is arranged in a fitting manner in such a manner as to be in contact with the entire periphery of the edge portion of the power generating element or the corner edge portion thereof, thereby protecting the edge portion of the power generating element against external impact. This is for reinforcement. The thickness and the like of the reinforcing member are appropriately selected and set in consideration of the reinforcing function and the material. Further, in order to lead the input / output terminals (leads for external connection) extended from the power generating element, a part of the reinforcing member is cut off.

【００１６】請求項１ないし６の発明において、ポリマ
ー系封止体（ラミネートフィルム）は、互いに対向する
面が熱融着性のよいアイオノマー樹脂（たとえばサーリ
ン）、ポリオレフィン系樹脂（たとえばポリエチレン）
とし、耐湿性を考慮して金属箔（たとえばアルミ箔、ニ
ッケル箔、銅箔）を介挿し、外層として機械的強度の高
い樹脂層（たとえばポリテレフタレート樹脂、ポリウレ
タン樹脂、ポリイミド樹脂）を積層一体化したものであ
る。たとえば厚さ50〜 100μm 程度のアルミニウム層お
よび熱融着層からなるポリエチレンテレフタレート樹脂
層、または厚さ50〜 100μm 程度のアルミニウム層およ
び熱融着層からなるイミド樹脂層などである。In the first to sixth aspects of the present invention, the polymer-based sealing body (laminated film) has an ionomer resin (for example, Surlyn) and a polyolefin-based resin (for example, polyethylene) whose surfaces facing each other have good heat-fusibility.
In consideration of moisture resistance, a metal foil (eg, aluminum foil, nickel foil, copper foil) is interposed, and a resin layer having high mechanical strength (eg, polyterephthalate resin, polyurethane resin, polyimide resin) is laminated and integrated as an outer layer. It was done. For example, a polyethylene terephthalate resin layer having an aluminum layer having a thickness of about 50 to 100 μm and a heat sealing layer, or an imide resin layer having an aluminum layer and a heat sealing layer having a thickness of about 50 to 100 μm is used.

【００１７】そして、このポリマー系封止体による発電
要素などの封止外装は、補強体を枠型に形成し、発電要
素の外部接続用リード端子を密に導出させる一方、この
補強体の開口部を封止外装（側壁部を封止外装の一部）
としてもよいし、組み合わせた補強体および発電要素を
一体的に、封止外装する構成を採ることができる。いず
れにしても、たとえば熱融着などで、補強体との接合あ
るいはポリマー系封止体同士を接合し、発電要素などを
封止・封装するために、熱可塑性樹脂フィルムが好まし
い。The sealing exterior of the power generation element and the like by the polymer-based sealing body forms a reinforcing member in a frame shape, and leads the lead terminals for external connection of the power generating element to the outside closely. Sealed exterior part (Side wall part of sealed exterior)
Alternatively, a configuration in which the combined reinforcing body and the power generation element are integrally sealed and exteriorized can be adopted. In any case, a thermoplastic resin film is preferable for joining with a reinforcing member or joining polymer-based sealing members together by, for example, heat sealing to seal and seal a power generation element and the like.

【００１８】請求項１ないし６の発明では、落下衝撃な
どの外力に対して比較的弱い部分・領域、すなわち発電
要素の外周端面部（端縁部）が、補強体によって補強・
保護され、衝撃などの外力による損傷発生が防止され
る。すなわち、ポリマー電解質二次電池は、コンパクト
化、軽量化などが図られる一方、補強用の枠体などによ
って、その補強体により衝撃などの外力から容易に保護
され（もしくは衝撃などが吸収され）、ポリマー電解質
二次電池自体の損傷発生、発電要素などにおける位置ズ
レやショート発生などが防止される。したがって、良好
な外観ないし外装、および高い信頼性を有するポリマー
電解質電池として機能する。According to the first to sixth aspects of the present invention, a portion / region relatively weak to an external force such as a drop impact, that is, an outer peripheral end surface (edge) of the power generating element is reinforced and reinforced by the reinforcing member.
It is protected and damage from external force such as impact is prevented. In other words, the polymer electrolyte secondary battery is made compact and lightweight, and is easily protected from external force such as impact by the reinforcing frame (or the impact is absorbed) by the reinforcing frame or the like, The occurrence of damage to the polymer electrolyte secondary battery itself and the occurrence of positional shift and short-circuit in a power generation element and the like are prevented. Therefore, it functions as a polymer electrolyte battery having good appearance or exterior and high reliability.

【００１９】[0019]

【発明の実施の形態】以下図１、図２(a) ，(b) 、図３
(a) ，(b) ，(c) 、図４(a) ，(b) および図５を参照し
て実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1, FIG. 2 (a), (b), FIG.
An embodiment will be described with reference to (a), (b), (c), FIGS. 4 (a), (b) and FIG.

【００２０】実施例１ 図１は、この実施例に係るポリマー電解質電池の概略構
成を示す展開斜視図である。図１において、１は外部接
続用端子2a，4aを備えた板状の発電要素である。ここ
で、発電要素１は、外部接続用端子2aが延設されたシー
ト状の正極２、ポリマー電解質層３および外部接続用端
子4aが延設されたシート状の負極４を積層した構成を成
している。Embodiment 1 FIG. 1 is a developed perspective view showing a schematic configuration of a polymer electrolyte battery according to this embodiment. In FIG. 1, reference numeral 1 denotes a plate-like power generation element having external connection terminals 2a and 4a. Here, the power generating element 1 has a configuration in which a sheet-shaped positive electrode 2 having an external connection terminal 2a extended therethrough, a polymer electrolyte layer 3 and a sheet-shaped negative electrode 4 having an external connection terminal 4a extended are stacked. are doing.

【００２１】また、５は前記発電要素１の少なくとも端
縁部を囲繞するように配置された補強体、６は前記外部
接続用端子2a，4aを導出しながら発電要素１を封止する
ポリマー系封止体で、たとえば厚さ 0.1mm程度のポリエ
チレンテレフタレー樹脂フィルム（ラミネートフイル
ム）6a，6bの端縁部を補強体５の開口端面に溶着した構
成と成っている。ここで、補強体５は、発電要素１の全
外周端面に嵌合し、かつほぼ同一面を成す厚さ 3mm程度
の変性ポリエステル樹脂製の環状枠体である。また、ポ
リマー系封止体6a，6bは、厚さ 0.1mm程度のポリエチレ
ンテレフタレー樹脂フィルムであって、その外周端縁部
を環状枠体５に熱溶着させて封止している。Reference numeral 5 denotes a reinforcing member arranged so as to surround at least an edge of the power generating element 1, and 6 denotes a polymer system for sealing the power generating element 1 while leading out the external connection terminals 2a and 4a. The sealing member has a configuration in which, for example, polyethylene terephthale resin films (laminated films) 6a and 6b having a thickness of about 0.1 mm are welded to the opening end surface of the reinforcing member 5. Here, the reinforcing member 5 is an annular frame made of a modified polyester resin having a thickness of about 3 mm, which is fitted on the entire outer peripheral end surface of the power generating element 1 and forms substantially the same surface. Further, the polymer sealing bodies 6a and 6b are polyethylene terephthale resin films having a thickness of about 0.1 mm, and the outer peripheral edge portions thereof are thermally welded to the annular frame body 5 and sealed.

【００２２】つまり、この構造では、外装が環状枠体５
およびポリマー系封止体6a，6bによって形成され、これ
らによって発電要素１を封止した構成を採っている。な
お、この封止系の発電要素１は、非水電解液を含有して
いる。That is, in this structure, the exterior is the annular frame 5
And the polymer sealing bodies 6a and 6b, and the power generating element 1 is sealed by these. The power generating element 1 of this sealing system contains a non-aqueous electrolyte.

【００２３】より具体的に説明すると、シート状の正極
２は、幅40mm，長さ70mm，厚さ40〜60μm で、リード部
として幅10mm，長さ20mmの突出部を有し、かつこの突出
部先端に正極端子2aを超音波溶接したアルミニウム箔を
集電体とし、この集電体に正極活物質層を担持させた構
成となっている。ここで、正極活物質層は、正極活物質
としてのマンガン酸リチウム65重量％、カーボンブラッ
ク15重量％およびビニリデンフロライド−ヘキサフルオ
ロプロピレン（ VdF-HFP）共重合体粉末20重量％の組成
比で選び、アセトン中で混合・調製したペーストを使用
し、厚さ 200μm の活物質膜を形成したポリエチレンテ
レフタレートフィルムを集電体に担持させたものであ
る。More specifically, the sheet-like positive electrode 2 has a width of 40 mm, a length of 70 mm, a thickness of 40 to 60 μm, a lead portion of a width of 10 mm and a length of 20 mm, and has a protrusion. An aluminum foil in which the positive electrode terminal 2a is ultrasonically welded to the tip of the portion is used as a current collector, and the current collector carries a positive electrode active material layer. Here, the positive electrode active material layer has a composition ratio of 65% by weight of lithium manganate, 15% by weight of carbon black, and 20% by weight of vinylidene fluoride-hexafluoropropylene (VdF-HFP) copolymer powder as the positive electrode active material. A polyethylene terephthalate film having a 200 μm-thick active material film formed on a current collector was prepared using a paste selected and mixed and prepared in acetone.

【００２４】一方、シート状の負極４は、幅44mm，長さ
74mm，厚さ40〜60μm で、リード部として幅10mm，長さ
20mmの突出部を有し、かつこの突出部先端に負極端子4a
を超音波溶接した銅箔を集電体とし、この集電体に負極
活物質層を担持させた構成となっている。ここ出、負極
活物質層は、負極活物質としてメソフェーズピッチ炭素
繊維65重量％、カーボンブラック15重量％およびビニリ
デンフロライド−ヘキサフルオロプロピレン（ VdF-HF
P）共重合体粉末20重量％の組成比で選び、アセトン中
で混合・調製したペーストを使用し、厚さ 200μm の活
物質膜を形成したポリエチレンテレフタレートフィルム
を集電体に担持させたものである。On the other hand, the sheet-shaped negative electrode 4 has a width of 44 mm and a length of 44 mm.
74mm, thickness 40 ~ 60μm, width 10mm, length as lead part
It has a projection of 20 mm, and the negative electrode terminal 4a
The current collector is made of a copper foil obtained by ultrasonic welding, and the current collector carries a negative electrode active material layer. Here, the negative electrode active material layer is composed of 65% by weight of mesophase pitch carbon fiber, 15% by weight of carbon black, and vinylidene fluoride-hexafluoropropylene (VdF-HF) as the negative electrode active material.
P) A polyethylene terephthalate film having an active material film with a thickness of 200 μm, supported on a current collector, using a paste mixed and prepared in acetone, selected at a composition ratio of 20% by weight of the copolymer powder. is there.

【００２５】また、ポリマー電解質３は、シリカ粉末3
3.3重量％、ビニリデンフロライド−ヘキサフルオロプ
ロピレン（ VdF-HFP）共重合体粉末22.2重量％およびフ
タル酸ジブチル（ DBP）44.5重量％の組成比で選び、ア
セトン中で混合・調製したペーストを使用し、ポリエチ
レンテレフタレートフィルム面に厚さ 100μm の膜を形
成したものである。The polymer electrolyte 3 comprises silica powder 3
3.3% by weight, 22.2% by weight of vinylidene fluoride-hexafluoropropylene (VdF-HFP) copolymer powder and 44.5% by weight of dibutyl phthalate (DBP) were selected, and the paste mixed and prepared in acetone was used. And a film having a thickness of 100 μm formed on the surface of a polyethylene terephthalate film.

【００２６】さらに、発電要素１に含有されている非水
電解液は、たとえばエチレンカーボネートとジメチルカ
ーボネートとを体積比で 2： 1の割合で混合した非水溶
媒に、LiPF6 を 1 mol／ lの割合で溶解・調製したもの
である。そして、この非水電解液中に、前記シート状の
正極２、シート状の負極４およびポリマー電解質３をそ
れぞれ浸漬・含浸させた後、ポリマー電解質３を挟む形
でシート状の正極２およびシート状の負極４を積層して
発電要素１を構成してある。Further, the non-aqueous electrolyte contained in the power generating element 1 is composed of, for example, a non-aqueous solvent in which ethylene carbonate and dimethyl carbonate are mixed at a volume ratio of 2: 1 and LiPF 6 at 1 mol / l. It was dissolved and prepared at the ratio of After the sheet-shaped positive electrode 2, the sheet-shaped negative electrode 4, and the polymer electrolyte 3 are immersed and impregnated in the nonaqueous electrolyte, respectively, the sheet-shaped positive electrode 2 and the sheet-shaped The power generating element 1 is formed by laminating the negative electrodes 4.

【００２７】また、補強体５は、変性ポリエステル樹脂
製の肉厚 3mm程度の環状枠体で、前記発電要素１外周端
面に、発電要素１と同一面を成すように着脱可能に嵌合
されている。そして、厚さ 0.1mm程度のポリエチレンテ
レフタレート樹脂製フィルム（ラミネートフィルム）6
a，6bで発電素子１主面を被覆する一方、その外周端縁
部を環状枠体（補強体）５に熱溶着させて、発電要素１
を液密に封止・外装している。The reinforcing member 5 is an annular frame made of a modified polyester resin having a thickness of about 3 mm, and is detachably fitted to the outer peripheral end surface of the power generating element 1 so as to be flush with the power generating element 1. I have. Then, a polyethylene terephthalate resin film (laminate film) with a thickness of about 0.1 mm 6
While the main surface of the power generating element 1 is covered with a and 6b, the outer peripheral edge thereof is thermally welded to an annular frame (reinforcing body) 5 to form the power generating element 1
Is sealed and packaged in a liquid-tight manner.

【００２８】上記構成の板状ポリマー電解質電池は、補
強体５の介挿・配設によって、外的な衝撃を強く受け易
いや端縁部ないしコーナー部が機械的に補強されている
ため、発電要素１の破損ないし損傷の発生、あるいは位
置ズレの発生などが防止される。そして、この発電要素
１の破損ないし損傷の発生防止などは、シート状の正・
負電極２，４間、あるいは接続用リードとの間での短絡
発生を回避できるため、板状ポリマー二次電池の信頼性
向上に大きく寄与することになる。すなわち、大容量化
および小形化を図りながら、機械的な補強によって取扱
い易く、かつ構造的な損傷を起こし難い板状ポリマー電
解質電池を容易に提供できる。Since the plate-shaped polymer electrolyte battery having the above structure is easily susceptible to an external impact and mechanically reinforced at the edges or corners by the interposition and arrangement of the reinforcing member 5, the power generation Occurrence of breakage or damage of the element 1 or occurrence of misalignment is prevented. The prevention of the occurrence of breakage or damage of the power generation element 1 depends on the sheet-like
Since the occurrence of a short circuit between the negative electrodes 2 and 4 or the connection lead can be avoided, it greatly contributes to improving the reliability of the plate-shaped polymer secondary battery. That is, it is possible to easily provide a plate-shaped polymer electrolyte battery which is easy to handle by mechanical reinforcement and hardly causes structural damage, while achieving a large capacity and a small size.

【００２９】実施例２ 図２ (a)， (b)は、この実施例に係るポリマー電解質電
池の概略構成を示す展開斜視図である。図２ (a)におい
て、１は外部接続用端子2a，4aを備えた板状の発電要素
である。ここで、発電要素１は、外部接続用端子2aが延
設されたシート状の正極２、ポリマー電解質層３および
外部接続用端子4aが延設されたシート状の負極４を積層
した構成を成している。Embodiment 2 FIGS. 2 (a) and 2 (b) are developed perspective views showing a schematic configuration of a polymer electrolyte battery according to this embodiment. In FIG. 2A, reference numeral 1 denotes a plate-like power generating element provided with external connection terminals 2a and 4a. Here, the power generating element 1 has a configuration in which a sheet-shaped positive electrode 2 having an external connection terminal 2a extended therethrough, a polymer electrolyte layer 3 and a sheet-shaped negative electrode 4 having an external connection terminal 4a extended are stacked. are doing.

【００３０】また、７は前記発電要素１の一端縁を露出
させ、嵌合的に内装する補強体、６は前記外部接続用端
子2a，4aを導出しながら発電要素１を嵌合的に内装する
補強体７を封止するポリマー系封止体で、たとえば厚さ
0.1mm程度のポリエチレンテレフタレート樹脂フィルム
（ラミネートフイルム）6a，6bの端縁部同士を熱溶着し
た構成と成っている。ここで、補強体７は、発電要素１
を嵌合的に内装する断面内径 3×42mm、肉厚 1mm程度の
一端が開口する筒型を成しており、前記開口から外部接
続用端子2a，4aを導出させる形で嵌合的に内装した構成
を採っている。上記図２ (a)に図示した構成で、補強体
７を図２ (b)に概略構成を斜視的に示すように、内側が
開口する鞘型７′に形成し、発電要素１の３辺を嵌合さ
せて、発電要素１の端縁部の挟持・装着によって補強す
る構造を採ることもできる。Reference numeral 7 denotes a reinforcing body that exposes one end edge of the power generating element 1 and fits and fits therein, and 6 denotes a reinforcing body that fits the power generating element 1 while drawing out the external connection terminals 2a and 4a. Polymer-based sealing body for sealing the reinforcing body 7 to be
The edge portions of a polyethylene terephthalate resin film (laminated film) 6a and 6b of about 0.1 mm are thermally welded to each other. Here, the reinforcing member 7 is a power generation element 1.
It has a cylindrical shape with a cross-sectional inside diameter of 3 x 42 mm and a wall thickness of about 1 mm with one end opening. The external connection terminals 2 a and 4 a are led out from the opening and fitted inside. It has adopted the configuration. In the configuration shown in FIG. 2 (a), the reinforcing member 7 is formed in a sheath type 7 'having an open inside as schematically shown in FIG. May be fitted to each other to reinforce the power generation element 1 by pinching / attaching the edge thereof.

【００３１】なお、この実施例において、発電要素１を
形成するシート状の正極２、シート状の負極４、ポリマ
ー電解質層３などは、実施例１の場合と同様のものであ
る。In this embodiment, the sheet-shaped positive electrode 2, the sheet-shaped negative electrode 4, and the polymer electrolyte layer 3 forming the power generating element 1 are the same as those in the first embodiment.

【００３２】上記構成の板状ポリマー二次電池は、補強
体７もしくは７′の介挿・配設によって、外的な衝撃を
強く受け易い端縁部ないしコーナー部が機械的に補強さ
れているため、発電要素１の破損ないし損傷の発生、あ
るいは位置ズレの発生などが防止される。そして、この
発電要素１の破損ないし損傷の発生防止などは、シート
状の正・負電極２，４間、あるいは接続用リードとの間
での短絡発生を回避できるため、板状ポリマー電解質電
池の信頼性向上に大きく寄与することになる。すなわ
ち、大容量化および小形化を図りながら、機械的な補強
によって取扱い易く、かつ構造的な損傷を起こし難い板
状ポリマー電解質電池を容易に提供できる。In the plate-shaped polymer secondary battery having the above structure, the edges or corners, which are susceptible to strong external impact, are mechanically reinforced by the interposition and arrangement of the reinforcing member 7 or 7 '. Therefore, the occurrence of breakage or damage of the power generation element 1 or the occurrence of position shift is prevented. In order to prevent breakage or damage of the power generation element 1, a short circuit between the sheet-like positive and negative electrodes 2 and 4 or between the sheet-like positive and negative electrodes 2 and 4 can be avoided. This will greatly contribute to improving reliability. That is, it is possible to easily provide a plate-shaped polymer electrolyte battery which is easy to handle by mechanical reinforcement and hardly causes structural damage, while achieving a large capacity and a small size.

【００３３】実施例３ 図３ (a)， (b)， (c)は、この実施例に係るポリマー電
解質電池の概略構成を示す展開斜視図である。図３ (a)
において、１は外部接続用端子2a，4aを備えた板状の発
電要素である。ここで、発電要素１は、外部接続用端子
2aが延設されたシート状の正極２、ポリマー電解質層３
および外部接続用端子4aが延設されたシート状の負極４
を積層した構成を成している。Embodiment 3 FIGS. 3 (a), 3 (b) and 3 (c) are developed perspective views showing a schematic configuration of a polymer electrolyte battery according to this embodiment. Fig. 3 (a)
, 1 is a plate-like power generating element provided with external connection terminals 2a and 4a. Here, the power generating element 1 is a terminal for external connection.
Sheet-shaped positive electrode 2 with 2a extended, polymer electrolyte layer 3
And a sheet-like negative electrode 4 on which external connection terminals 4a are extended
Are laminated.

【００３４】そして、この構成では、前記発電要素１が
突出型に、両主面側に配置されたポリマー系封止フィル
ム6a，6b、たとえば厚さ 0.1mm程度のポリエチレンテレ
フタレート樹脂フィルム（ラミネートフイルム）6a，6b
の端縁部同士を熱溶着し、封止されている。また、前記
発電要素１の突出する全外周端面に、枠型の補強体８を
嵌合的に配置するとともに、ポリマー系封止フィルム6a
面に接着・固定して補強する。一方、この補強体８面
に、前記外部接続用端子2a，4aを貼着・導出した構成と
している。In this configuration, the power generating element 1 is formed in a protruding manner, and the polymer sealing films 6a and 6b disposed on both main surfaces, for example, a polyethylene terephthalate resin film (laminate film) having a thickness of about 0.1 mm. 6a, 6b
Are welded to each other by heat and sealed. A frame-shaped reinforcing member 8 is fitted on the entire outer peripheral end surface of the power generating element 1 and the polymer-based sealing film 6a.
Glue and fix to the surface to reinforce. On the other hand, the external connection terminals 2a and 4a are attached and led to the surface of the reinforcing member 8.

【００３５】上記図３ (a)に図示した構成で、補強体８
を図３ (b)、もしくは図３ (c)に概略構成を斜視的に示
すように、一部を切除した分割型（分離型）８′もしく
はコの字型８″に形成し、発電要素１のコーナー部を優
先的に補強する構造を採ることもできる。With the structure shown in FIG.
As shown in a perspective view in FIG. 3 (b) or FIG. 3 (c), the power generating element is formed into a split type (separated type) 8 'or a U-shaped type 8 "with a part cut away. A structure that preferentially reinforces the first corner may be employed.

【００３６】なお、この実施例において、発電要素１を
形成するシート状の正極２、シート状の負極４、ポリマ
ー電解質層３などは、実施例１の場合と同様のものであ
る。上記構成の板状ポリマー二次電池は、補強体８，
８′もしくは８″の介挿・配設によって、外的な衝撃を
強く受け易いや外周端面部ないしコーナー部が機械的に
補強されているため、発電要素１の破損ないし損傷の発
生、あるいは位置ズレの発生などが防止される。そし
て、この発電要素１の破損ないし損傷の発生防止など
は、シート状の正・負電極２，４間、あるいは接続用リ
ードとの間での短絡発生を回避できるため、板状ポリマ
ー電解質電池の信頼性向上に大きく寄与することにな
る。In this embodiment, the sheet-shaped positive electrode 2, the sheet-shaped negative electrode 4, and the polymer electrolyte layer 3 forming the power generating element 1 are the same as those in the first embodiment. The plate-shaped polymer secondary battery having the above-described configuration includes the reinforcing member 8,
The insertion or arrangement of 8 'or 8 "makes the power generating element 1 damaged or damaged because the external impact face is easily received strongly and the outer peripheral end face or corner is mechanically reinforced. In order to prevent the power generation element 1 from being damaged or damaged, a short circuit between the sheet-like positive and negative electrodes 2 and 4 or the connection lead is avoided. Therefore, it greatly contributes to improving the reliability of the plate-shaped polymer electrolyte battery.

【００３７】また、ポリマー系封止フィルム6a，6bが積
層型で、内層としての金属薄層が水分の侵入防止に寄与
するため、耐湿性に伴い安定性が向上する。したがっ
て、大容量化および小形化を図りながら、機械的な補強
によって取扱い易く、かつ構造的な損傷を起こし難い板
状ポリマー電解質電池を容易に提供できる。Further, since the polymer sealing films 6a and 6b are of a laminated type, and the thin metal layer as the inner layer contributes to the prevention of intrusion of moisture, the stability is improved with the moisture resistance. Therefore, it is possible to easily provide a plate-shaped polymer electrolyte battery which is easy to handle by mechanical reinforcement and hardly causes structural damage, while achieving a large capacity and a small size.

【００３８】実施例４ 図４ (a)， (b)は、この実施例に係るポリマー電解質電
池の概略構成を示す展開斜視図である。板状の発電要素
１は、外部接続用端子2a，4aを備えおり、この外部接続
用端子2aが延設されたシート状の正極２、ポリマー電解
質層３、および外部接続用端子4aが延設されたシート状
の負極４を積層した構成を成している。また、９は前記
発電要素１の一端縁を露出させ、嵌合的に内装する嵌合
型の補強体、６は前記外部接続用端子2a，4aを導出しな
がら発電要素１を内装・封止するポリマー系封止体で、
たとえば厚さ 0.1mm程度のポリエチレンテレフタレート
樹脂フィルム（ラミネートフイルム）6a，6bの端縁部同
士を熱溶着した構成と成っている。ここで、嵌合型の補
強体９は、発電要素１を嵌合的に内装する断面内径 4×
45mm、肉厚 1mm程度の一端が開口する筒型を成してお
り、前記開口から外部接続用リード端子2a，4aを導出さ
せる形で嵌合的に内装した構成を採っている。Example 4 FIGS. 4 (a) and 4 (b) are developed perspective views showing a schematic configuration of a polymer electrolyte battery according to this example. The plate-like power generating element 1 includes external connection terminals 2a and 4a, and a sheet-like positive electrode 2 having the external connection terminals 2a extended, the polymer electrolyte layer 3, and the external connection terminals 4a extended. Of the sheet-like negative electrode 4 thus laminated. Reference numeral 9 denotes a fitting-type reinforcing member that exposes one end edge of the power generating element 1 and fits inside the power generating element 1. Reference numeral 6 denotes a state in which the power generating element 1 is mounted and sealed while leading out the external connection terminals 2a and 4a. Polymer-based sealing body
For example, the edge portions of a polyethylene terephthalate resin film (laminated film) 6a and 6b having a thickness of about 0.1 mm are thermally welded to each other. Here, the fitting-type reinforcing body 9 has a cross-sectional inner diameter of 4 × in which the power generating element 1 is fitted inside.
It has a cylindrical shape of 45 mm and a wall thickness of about 1 mm, one end of which is open. The external connection lead terminals 2a and 4a are led out of the opening and are fitted inside.

【００３９】さらに、発電要素１内装・封止するポリマ
ー系封止フィルム6a，6bは、実施例３の場合と同様の積
層型であり、幅方向の端縁部を折立て曲げ6a′られ、こ
の部分6a′が筒型の補強体９の側壁面に接するように嵌
合・装着されている。Further, the polymer sealing films 6a and 6b for enclosing and sealing the power generating element 1 are of the same laminated type as in the case of the third embodiment, and the edges in the width direction are bent up 6a '. This portion 6a 'is fitted and mounted so as to be in contact with the side wall surface of the tubular reinforcing body 9.

【００４０】上記図４ (a)に図示した構成で、嵌合型補
強体９を図４ (b)に概略構成を斜視的に示すように、壁
面を全体的に孔開けした構成とし、発電要素１の３辺を
嵌合させて、発電要素１の端縁部の挟持・装着によって
補強する構造を採ることもできる。In the configuration shown in FIG. 4 (a), the fitting type reinforcing member 9 has a configuration in which the wall surface is entirely perforated as shown in a perspective view schematically in FIG. 4 (b). It is also possible to adopt a structure in which the three sides of the element 1 are fitted to each other, and the power generation element 1 is reinforced by sandwiching and attaching the edge thereof.

【００４１】なお、この実施例において、発電要素１を
形成するシート状の正極２、シート状の負極４、ポリマ
ー電解質層３は、実施例１の場合と同様のものである。In this embodiment, the sheet-shaped positive electrode 2, the sheet-shaped negative electrode 4, and the polymer electrolyte layer 3 forming the power generating element 1 are the same as those in the first embodiment.

【００４２】上記構成の板状ポリマー二次電池は、補強
体９もしくは９′の介挿・配設によって、外的な衝撃を
強く受け易いや端縁部ないしコーナー部が機械的に補強
されているため、発電要素１の破損ないし損傷の発生、
あるいは位置ズレの発生などが防止される。そして、こ
の発電要素１の破損ないし損傷の発生防止などは、シー
ト状の正・負電極２，４間、あるいは接続用リードとの
間での短絡発生を回避できるため、板状ポリマー電解質
電池の信頼性向上に大きく寄与することになる。The plate-shaped polymer secondary battery having the above-mentioned structure is easily susceptible to external impact and mechanically reinforced at the edges or corners by the interposition and arrangement of the reinforcing member 9 or 9 '. Damage or damage to the power generation element 1
Alternatively, the occurrence of a displacement or the like is prevented. In order to prevent breakage or damage of the power generation element 1, a short circuit between the sheet-like positive and negative electrodes 2 and 4 or between the sheet-like positive and negative electrodes 2 and 4 can be avoided. This will greatly contribute to improving reliability.

【００４３】実施例５ 図５は、この実施例に係るポリマー電解質電池の概略構
成を示す展開斜視図である。外部接続用端子2a，4aを備
えた板状の発電要素１は、外部接続用端子2aが延設され
たシート状の正極２、ポリマー電解質層３および外部接
続用端子4aが延設されたシート状の負極４を積層した構
成を成している。Embodiment 5 FIG. 5 is a developed perspective view showing a schematic configuration of a polymer electrolyte battery according to this embodiment. The plate-like power generating element 1 provided with the external connection terminals 2a and 4a includes a sheet-like positive electrode 2 having the external connection terminals 2a extended, a polymer electrolyte layer 3 and a sheet having the external connection terminals 4a extended. It has a configuration in which a negative electrode 4 in a shape of is laminated.

【００４４】また、５′は前記発電要素１の全外周端縁
面と嵌合する枠型の補強体、６は前記外部接続用端子2
a，4aを導出しながら発電要素１を内装・封止するポリ
マー系封止体で、たとえば厚さ 0.1mm程度のポリエチレ
ンテレフタレート樹脂フィルム（ラミネートフイルム）
6a，6bの端縁部同士を熱溶着した構成と成っている。こ
こで、枠型の補強体５′は、両面に厚さ0.05〜 0.2mm程
度の金属板5aが貼着された積層構造体で、かつ発電要素
１を嵌合的に内装する内径42×72mm、肉厚 3mm程度の枠
型を成している。そして、その側壁部から外部接続用端
子2a，4aを導出させる形で、発電要素１を嵌合的に装着
する構成を採っている。また、発電要素１内装・封止す
るポリマー系封止フィルム6a，6bは、実施例３の場合と
同様の積層型であり、ポリマー系封止フィルム6a，6bの
各外周端縁部を枠型の補強体５′の開口端面に熱溶着さ
せて封止・内装指せた構成と成っている。Reference numeral 5 'denotes a frame-shaped reinforcing member fitted to the entire outer peripheral edge of the power generating element 1. Reference numeral 6 denotes the external connection terminal 2.
a, 4a is a polymer-based encapsulant for housing and encapsulating the power generation element 1 while deriving a 4a.
The configuration is such that the edges of 6a and 6b are welded together. Here, the frame-shaped reinforcing member 5 ′ is a laminated structure having a metal plate 5 a having a thickness of about 0.05 to 0.2 mm adhered to both sides, and has an inner diameter of 42 × 72 mm in which the power generation element 1 is fitted and fitted. It has a frame shape with a wall thickness of about 3 mm. Then, the power generation element 1 is fitted and mounted so that the external connection terminals 2a and 4a are led out from the side wall. The polymer-based sealing films 6a and 6b used for the interior and sealing of the power generating element 1 are of a laminated type similar to that of the third embodiment, and the outer peripheral edges of the polymer-based sealing films 6a and 6b are frame-shaped. Of the reinforcing member 5 'is thermally welded to the opening end face of the reinforcing member 5' so that the sealing and interior parts can be pointed out.

【００４５】上記構成の板状ポリマー電解質電池は、補
強体５′の介挿・配設によって、外的な衝撃を強く受け
易いや端縁部ないしコーナー部が機械的に補強されてい
るため、発電要素１の破損ないし損傷の発生、あるいは
位置ズレの発生などが防止される。そして、この発電要
素１の破損ないし損傷の発生防止などは、シート状の正
・負電極２，４間、あるいは接続用リードとの間での短
絡発生を回避できるため、板状ポリマー二次電池の信頼
性向上に大きく寄与することになる。The plate-shaped polymer electrolyte battery having the above structure is easily susceptible to external impact and mechanically reinforced at the edges or corners by the interposition and arrangement of the reinforcing member 5 '. The occurrence of breakage or damage of the power generation element 1 or the occurrence of position shift is prevented. In order to prevent the power generation element 1 from being damaged or damaged, it is possible to avoid the occurrence of a short circuit between the sheet-like positive and negative electrodes 2 and 4 or between the sheet-like positive and negative electrodes 2 and 4 or the connection lead. This greatly contributes to the improvement of the reliability.

【００４６】本発明は、上記実施例に限定されるもので
なく、発明の趣旨を逸脱しない範囲でいろいろの変形を
採ることができる。たとえば、ポリプロピレン樹脂以外
の他の樹脂、たとえばポリエチレンテレフタレート樹脂
製としてもよいし、また、角型平板状の寸法、用途や仕
様などによって適宜選択することができる。The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. For example, it may be made of a resin other than the polypropylene resin, for example, a polyethylene terephthalate resin, or may be appropriately selected according to the size, application, specifications, and the like of the rectangular flat plate.

【００４７】[0047]

【発明の効果】請求項１ないし６の発明によれば、衝撃
などの外力に対して比較的弱い部分・領域、すなわち角
型平板状の外周端面部が補強体によって補強・保護され
ている。すなわち、板状ポリマー電解質電池のコンパク
ト化、軽量化などを図りながら、補強体などによる衝撃
の吸収や補強作用とで、衝撃などの外力による電池の外
周端面部の損傷発生が容易に防止されする。すなわち、
取扱操作などに支障を及ぼさない機械的強度を有すると
ともに、軽量・コンパクトで、かつ低コストな板状ポリ
マー電解質電池を提供できる。According to the first to sixth aspects of the present invention, the portion / region relatively weak to external force such as an impact, that is, the outer peripheral end face of the rectangular flat plate is reinforced and protected by the reinforcing member. In other words, while reducing the size and weight of the plate-shaped polymer electrolyte battery, the impact absorption and reinforcement by the reinforcing member and the like can easily prevent the outer peripheral end face of the battery from being damaged by an external force such as an impact. . That is,
It is possible to provide a lightweight, compact, and low-cost plate-shaped polymer electrolyte battery that has mechanical strength that does not hinder handling operations and the like.

【図面の簡単な説明】[Brief description of the drawings]

【図１】第１の実施例に係る板状ポリマー電解質電池の
要部構成を示す展開斜視図。FIG. 1 is a developed perspective view showing a configuration of a main part of a plate-shaped polymer electrolyte battery according to a first embodiment.

【図２】(a) は第２の実施例に係る板状ポリマー電解質
電池の要部構成を示す展開斜視図、(b) は第２の実施例
に係る板状ポリマー電解質電池の補強体の変形例を示す
斜視図。FIG. 2A is an exploded perspective view showing a main configuration of a plate-shaped polymer electrolyte battery according to a second embodiment, and FIG. 2B is a perspective view of a reinforcing member of the plate-shaped polymer electrolyte battery according to the second embodiment. The perspective view showing a modification.

【図３】(a) は第３の実施例に係る板状ポリマー電解質
電池の要部構成を示す展開斜視図、(b) および(c) は第
３の実施例に係る板状ポリマー電解質電池の互いに異な
る要部構成の変形例を示す斜視図。3A is an exploded perspective view showing a main part configuration of a plate-shaped polymer electrolyte battery according to a third embodiment, and FIGS. 3B and 3C are plate-shaped polymer electrolyte batteries according to the third embodiment. The perspective view which shows the modification of the mutually different principal part structure.

【図４】第４の実施例に係る板状ポリマー電解質電池の
要部構成を示す展開斜視図。FIG. 4 is an exploded perspective view showing a main configuration of a plate-shaped polymer electrolyte battery according to a fourth embodiment.

【図５】第５の実施例に係る板状ポリマー電解質電池の
要部構成を示す展開斜視図。FIG. 5 is a developed perspective view showing a configuration of a main part of a plate-shaped polymer electrolyte battery according to a fifth embodiment.

【符号の説明】[Explanation of symbols]

１……発電要素 ２……シート状正極 2a，4a……外部接続用端子 ３……ホリマー電解質層 ４……シート状負極 ５，５′，７，７′，８，８′，８″，９，９′……補
強体 5a……補強体の金属層 ６……ポリマー系封止体 6a，6b……ポリマー系封止フィルムDESCRIPTION OF SYMBOLS 1 ... Power generation element 2 ... Sheet-shaped positive electrode 2a, 4a ... Terminal for external connection 3 ... Hollyer electrolyte layer 4 ... Sheet-shaped negative electrode 5, 5 ', 7, 7', 8, 8 ', 8 ", 9, 9 '... reinforcement body 5a ... metal layer of reinforcement body 6 ... polymer-based sealing body 6a, 6b ... polymer-based sealing film

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H011 AA01 CC02 CC06 CC08 CC10 CC12 DD13 GG01 HH02 HH11 JJ02 5H029 AJ11 AK03 AL06 AM00 AM02 AM07 AM16 BJ04 DJ02 DJ03 EJ01 EJ12  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H011 AA01 CC02 CC06 CC08 CC10 CC12 DD13 GG01 HH02 HH11 JJ02 5H029 AJ11 AK03 AL06 AM00 AM02 AM07 AM16 BJ04 DJ02 DJ03 EJ01 EJ12

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 外部接続用端子を備えた板状の発電要素
と、 前記発電要素の少なくとも外周端縁部を囲繞するように
配置された補強体と、 前記外部接続用端子を導出しながら発電要素を封止する
ポリマー系封止体とを有する板状ポリマー電解質電池。1. A plate-shaped power generating element having an external connection terminal, a reinforcing member arranged so as to surround at least an outer peripheral edge of the power generation element, and power generation while leading out the external connection terminal And a polymer-based sealing member for sealing the element. 【請求項２】 補強体が枠体であることを特徴とする請
求項１記載の板状ポリマー電解質電池。2. The plate-shaped polymer electrolyte battery according to claim 1, wherein the reinforcing member is a frame. 【請求項３】 枠型補強体がポリマー系封止体の一部を
構成していることを特徴とする請求項１もしくは請求項
２記載の板状ポリマー電解質電池。3. The plate-shaped polymer electrolyte battery according to claim 1, wherein the frame-type reinforcing member forms a part of a polymer-based sealing body. 【請求項４】 補強体が嵌合型であることを特徴とする
請求項１記載の板状ポリマー電解質電池。4. The plate-shaped polymer electrolyte battery according to claim 1, wherein the reinforcing body is a fitting type. 【請求項５】 補強体が耐電解液性の樹脂性本体、およ
び樹脂性本体の主面に貼着された金属板で構成されてい
ることを特徴とする請求項１ないし請求項４いずれか一
記載の板状ポリマー電解質電池。5. The reinforcing body is composed of an electrolytic solution-resistant resinous main body and a metal plate adhered to a main surface of the resinous main body. A plate-shaped polymer electrolyte battery according to one of the preceding claims. 【請求項６】 補強体が複数の分割片で構成されている
ことを特徴とする請求項１ないし請求項５いずれか一記
載の板状ポリマー電解質電池。6. The plate-shaped polymer electrolyte battery according to claim 1, wherein the reinforcing member is constituted by a plurality of divided pieces.
JP10357648A 1998-12-16 1998-12-16 Plate-like polymer electrolyte battery Withdrawn JP2000182579A (en)

Priority Applications (1)

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Publication Number Publication Date
JP2000182579A true JP2000182579A (en) 2000-06-30

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