JPS6124144A - Thin battery - Google Patents

Thin battery

Info

Publication number
JPS6124144A
JPS6124144A JP14560784A JP14560784A JPS6124144A JP S6124144 A JPS6124144 A JP S6124144A JP 14560784 A JP14560784 A JP 14560784A JP 14560784 A JP14560784 A JP 14560784A JP S6124144 A JPS6124144 A JP S6124144A
Authority
JP
Japan
Prior art keywords
plates
positive
dish
battery
negative
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.)
Pending
Application number
JP14560784A
Other languages
Japanese (ja)
Inventor
Takashi Kato
隆 加藤
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 JP14560784A priority Critical patent/JPS6124144A/en
Publication of JPS6124144A publication Critical patent/JPS6124144A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/193—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/562—Terminals characterised by the material
    • 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

Abstract

PURPOSE:To surely prevent the unnecessary expansion of a positive and a negative plates, by shaping the central portion of at least one of the plates as a dish. CONSTITUTION:A battery electricity generating substance 4 is pinched between a positive and a negative plates 5, 6 which also serve as casing members. The plates 5, 6 are made of an elastic metal such as stainless steel at a small thickness. The central portions 51, 61 of the plates 5, 6 are formed as a dish. The plates 5, 6 have flanges 52, 62 along the peripheral edges of the plates. A sealing member 7 made of a filmlike fusible adhesive such as an ionomer made of a copolymer of epoxy and acrylic acid is interposed between the flanges 52, 62 of the positive and the negative plates 5, 6 to seal up an opening. As a result, stress is always elastically applied to the battery electricity generating substance 4 by the dish-formed portions 51, 61 of the plates 5, 6 so that the expansion of the substance 4 can be suppressed not only at the time of the sealing-up of the battery opening but also after it.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は薄形電池ｌこ係り、特に電池発電要素を収容
する外装体を兼ねた正負極端子板での脹らみを防止した
薄形電池に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a thin battery, and particularly to a thin battery that prevents swelling at the positive and negative terminal plates, which also serve as an exterior body housing a battery power generating element. Regarding.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

最近、電池使用機器の超小形化とあいまって、これに使
゛用される電池も小形で薄形化の傾向にある。Recently, along with the miniaturization of battery-powered devices, the batteries used in these devices are also becoming smaller and thinner.

しかして、従来この種の薄形電池として正負極体の間に
セパレータを介在してなる電池発電要素を外装体を兼ね
た正負極端子板で挾持するとともに端子板周縁部間をフ
ィルム状の熱融着性接着剤にて密封口するようにしたも
のがある−０ところが、このものの正負極端子板は極め
て薄手の金属性平板状のものが用いられ、この関係で外
装体としての剛性に著しく欠けるため密封口のため端子
板周縁部分に加熱しながら圧力を加えると電池発電要素
部でのわずかな熱膨張などが原因で端子板中央部分で脹
みを発生することがあり、これが原因で電池の厚さ方向
の寸法が予め定められた値より外れ製品不良が多発する
欠点があった。Conventionally, in this type of thin battery, a battery power generating element consisting of a separator interposed between positive and negative electrode bodies is sandwiched between positive and negative terminal plates that also serve as exterior bodies, and a film-like heat is applied between the peripheral edges of the terminal plates. There are some products that are sealed with a fusible adhesive. However, the positive and negative terminal plates of these products are made of extremely thin metal flat plates, and due to this, the rigidity of the exterior body is significantly reduced. If pressure is applied to the peripheral edge of the terminal board while heating it due to the sealing opening, slight thermal expansion in the battery power generation element may cause swelling in the center of the terminal board, which may cause the battery to swell. There was a drawback that the dimension in the thickness direction of the product deviated from a predetermined value, resulting in frequent product defects.

そこで、従来このような正負極端子板での不用な脹らみ
を防止し厚さ寸法を規定値内ζこおさまるように加圧工
程などを設けるようにしているが、これでは特別の工程
を余分に必要とするため工数が増えその分価格的に高価
なものになる欠点があった・。　　　− 〔発明の目的〕 この発明は上記欠点を除去するためなされたもので端子
板での不用な脹みを確実に防止でき、厚さ方向の寸法を
所定範囲内に規制できる平担性にすぐれた薄形電池を提
供することを目的とする。Therefore, in the past, a pressurizing process was installed to prevent such unnecessary swelling of the positive and negative terminal plates and to keep the thickness within the specified value, but this method requires a special process. The drawback was that the extra man-hours required increased and the price became more expensive. - [Object of the Invention] This invention was made to eliminate the above-mentioned drawbacks, and has excellent flatness that can reliably prevent unnecessary swelling in the terminal board and regulate the dimension in the thickness direction within a predetermined range. The purpose of this invention is to provide a thin battery with a low profile.

〔発明の概要〕[Summary of the invention]

この発明にかかる薄形電池は正負極端子板の少なくとも
一方の中央部分を皿状部に形成し密封日時電池発電要素
側に脹みを防止するような弾性応力を作用させるように
している。In the thin battery according to the present invention, the center portion of at least one of the positive and negative terminal plates is formed into a dish-shaped portion to apply elastic stress to the sealed date/time battery power generating element side to prevent swelling.

〔発明の効果〕〔Effect of the invention〕

この発明によれば正負極端子板での不用な脹らみを確実
に防止できるので厚さ方向の寸法を所定範囲内に正確に
規制することができ、寸法誤差による製品不良の発生を
大巾に減らすこさができる。According to this invention, it is possible to reliably prevent unnecessary swelling in the positive and negative terminal plates, so the dimension in the thickness direction can be accurately regulated within a predetermined range, and the occurrence of product defects due to dimensional errors can be greatly reduced. It can be reduced to

〔発明の実施例〕[Embodiments of the invention]

以下、この発明の一実施例を図面に従い説明する。 An embodiment of the present invention will be described below with reference to the drawings.

第１図はこの発明をリチウム、二酸化マンガン。Figure 1 shows this invention using lithium and manganese dioxide.

非水電解液電池に適用した例を示している。An example of application to a non-aqueous electrolyte battery is shown.

図において１は二酸化マンガンの正極合剤で、この正極
合剤１に非水電解液を含むセパレータ２を介してリチウ
ム負極体３を設け、電池発電要素４を構成している。In the figure, 1 is a positive electrode mixture of manganese dioxide, and a lithium negative electrode body 3 is provided to this positive electrode mixture 1 via a separator 2 containing a non-aqueous electrolyte to constitute a battery power generation element 4.

このような電池発電要素４を外装体を兼ねた正負極端子
板５，６にて挾持している。ここで、かかる端子板５，
６はいま説明の便宜上正極端子板５について述べると、
このものは第２図（ａｌ　（ｂｌに示すように薄手の弾
性金属板例えばステンレス板からなり、これの中央部分
を皿状部５１に形成するとともに周縁に沿ってフランジ
５２を有している。この場合、皿状部５１は深さを端子
板全周長の０．５〜３％程度に設定している。Such a battery power generation element 4 is held between positive and negative terminal plates 5 and 6 which also serve as exterior bodies. Here, such a terminal board 5,
6. For convenience of explanation, the positive electrode terminal plate 5 will now be described.
As shown in FIG. 2, this is made of a thin elastic metal plate, such as a stainless steel plate, and has a dish-shaped portion 51 at its center and a flange 52 along its periphery. In this case, the depth of the dish-shaped portion 51 is set to about 0.5 to 3% of the total circumferential length of the terminal plate.

一方、負極端子板６についても上述の正極端子板５と同
様にしている。On the other hand, the negative terminal plate 6 is also similar to the positive terminal plate 5 described above.

なお、かかる正負極端子板５，６は電池発電要素４を挾
持する状態で、各皿状部５１，６１にて電池発電要素４
に弾性応力を作用させるようにしている。The positive and negative electrode terminal plates 5 and 6 sandwich the battery power generation element 4, and the battery power generation element 4
An elastic stress is applied to the

この状態で、正負極端子板５．６のフラ・ンジ部５２　
、６２の間にフィルム状の熱融着性接着剤例えばエポキ
シとアクリル酸の共重合体かエポキシとアクリル酸の共
重合体からなるアイオノマー樹脂などの封口体・７を介
挿し密封口している。In this state, the flange portion 52 of the positive and negative terminal plates 5.6
, 62, a sealing body 7 made of a film-like heat-fusible adhesive such as a copolymer of epoxy and acrylic acid or an ionomer resin made of a copolymer of epoxy and acrylic acid is inserted between the two to seal the opening. .

このよう−こすれば、正負極端子板５，６の皿状部５１
　、６ｘにて常時電池発電要素４１こ弾性応力を作用さ
せることができるので、電池の密封時は勿論密封後に電
池発電要素４側に膨張などが生じてもこれを抑制し端子
板５，６での脹らみを確実に防止することができる。こ
れにより、電池の厚さ方向の寸法を所定範囲内に規制す
ることができ良好な平担性を得られ、これが原因の製品
不良を大巾に減らすことができる。By rubbing in this manner, the dish-shaped portions 51 of the positive and negative terminal plates 5 and 6
, 6x, elastic stress can be constantly applied to the battery power generating element 41, so that even if the battery power generating element 4 side expands not only when the battery is sealed, but also after the battery is sealed, this can be suppressed and the terminal plates 5 and 6 It is possible to reliably prevent swelling. Thereby, the dimension in the thickness direction of the battery can be regulated within a predetermined range, good flatness can be obtained, and product defects caused by this can be greatly reduced.

ここで、端子板５，６の皿状部５１，６１の深さを端子
板全周長の０５〜３チにしたのは０．５チ末では上述の
効果が充分期待できず、また３チを越えると皿状部の底
が逆に電池外側に脹らんでしまうからである。Here, the depth of the dish-shaped portions 51, 61 of the terminal boards 5, 6 is set to 05 to 3 inches of the total circumference of the terminal board because the above-mentioned effect cannot be expected sufficiently at the end of 0.5 inches, and 3 inches. This is because if the battery exceeds the limit, the bottom of the dish-shaped portion will bulge out toward the outside of the battery.

なお、この発明は上記実施例にのみ限定されず要旨を変
更しない範囲で適宜変形して実施できる。It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented with appropriate modifications without changing the gist.

例えば上述では正負極端子板５，６にいずれも皿状部５
１．６１を形成したが、これら端子板５，６の少なくと
も一方にのみ皿状部を形成しても上述の効果は期待でき
る。また上述では非水電解液電池化ついて述べたが、酸
化銀電池、アルカリマンガン電池、水銀電池などにもこ
の発明を適用することができる。For example, in the above case, both the positive and negative terminal plates 5 and 6 have dish-shaped portions 5.
1.61 is formed, but the above-mentioned effect can be expected even if a dish-shaped portion is formed only on at least one of these terminal plates 5 and 6. Furthermore, although the above description has been made regarding nonaqueous electrolyte batteries, the present invention can also be applied to silver oxide batteries, alkaline manganese batteries, mercury batteries, and the like.

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

第１図はこの発明の一実施例を示′す概略的構成図、第
２図（ａｌΦ）は同実施例に用いられる端子板を示しく
ａ）は側面図、（ｂ）は平面図である。Fig. 1 is a schematic configuration diagram showing an embodiment of the present invention, Fig. 2 (alΦ) shows a terminal plate used in the embodiment, a) is a side view, and (b) is a plan view. be.

Claims (3)

【特許請求の範囲】[Claims] （１）電池発電要素と、この発電要素を挾持する正負極
端子板と、これら正負極端子板の周縁部の間を密封口す
る封口体とを具備し、上記正負極端子板の少なくとも一
方に上記発電要素側に弾性応力を作用する皿状部を有す
る弾性金属板を用いたことを特徴とする薄形電池。(1) A battery power generation element, positive and negative terminal plates that sandwich the power generation element, and a sealing body that seals between the peripheral edges of these positive and negative terminal plates, and at least one of the positive and negative terminal plates. A thin battery characterized by using an elastic metal plate having a dish-shaped portion that applies elastic stress to the power generation element side. （２）上記端子板は弾性金属板としてステンレスを用い
たことを特徴とする特許請求の範囲第１項記載の薄形電
池。(2) The thin battery according to claim 1, wherein the terminal plate uses stainless steel as an elastic metal plate. （３）上記端子板は皿状部の深さを端子板全周長の０．
５〜３％に設定したことを特徴とする特許請求の範囲第
１項又は第２項記載の薄形電池。(3) For the above terminal board, the depth of the dish-shaped part is 0.
The thin battery according to claim 1 or 2, characterized in that the content is set to 5 to 3%.
JP14560784A 1984-07-13 1984-07-13 Thin battery Pending JPS6124144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14560784A JPS6124144A (en) 1984-07-13 1984-07-13 Thin battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14560784A JPS6124144A (en) 1984-07-13 1984-07-13 Thin battery

Publications (1)

Publication Number Publication Date
JPS6124144A true JPS6124144A (en) 1986-02-01

Family

ID=15388949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14560784A Pending JPS6124144A (en) 1984-07-13 1984-07-13 Thin battery

Country Status (1)

Country Link
JP (1) JPS6124144A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2847720A1 (en) * 2002-11-21 2004-05-28 Cit Alcatel Electrochemical cell, used in electronic components and circuits implanted in smart card, comprises negative and positive electrodes, each containing current collector covered in active material and packaging device housing the electrodes
EP1901365A1 (en) * 2006-09-04 2008-03-19 LG Chemical Limited Battery cell with small groove at surface and battery pack including the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2847720A1 (en) * 2002-11-21 2004-05-28 Cit Alcatel Electrochemical cell, used in electronic components and circuits implanted in smart card, comprises negative and positive electrodes, each containing current collector covered in active material and packaging device housing the electrodes
EP1453119A1 (en) * 2002-11-21 2004-09-01 Alcatel Electrochemical generator with monobloc connector
EP1901365A1 (en) * 2006-09-04 2008-03-19 LG Chemical Limited Battery cell with small groove at surface and battery pack including the same
US8343652B2 (en) 2006-09-04 2013-01-01 Lg Chem, Ltd. Battery cell and case with corresponding small grooves
US8916284B2 (en) 2006-09-04 2014-12-23 Lg Chem, Ltd. Battery cell with small groove at surface and battery pack including the same

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