JPH05159757A - Thin type battery - Google Patents
Thin type batteryInfo
- Publication number
- JPH05159757A JPH05159757A JP3349531A JP34953191A JPH05159757A JP H05159757 A JPH05159757 A JP H05159757A JP 3349531 A JP3349531 A JP 3349531A JP 34953191 A JP34953191 A JP 34953191A JP H05159757 A JPH05159757 A JP H05159757A
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- battery
- active material
- positive electrode
- negative electrode
- 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
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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エレクトロニクス機
器、電気自動車などの分野に使われる薄形電池の電池構
造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery structure of a thin battery used in fields such as electronic equipment and electric vehicles.
【０００２】[0002]
【従来の技術】従来この種の薄形電池は、図５に示すよ
うな構造であって、正極活物質層、電解質層及び負極活
物質層を層状に重ねた発電要素の上下に正極集電体兼電
槽及び負極集電体兼電槽を配置し、接着性樹脂と集電体
兼電槽を一体化したものであり、更にこれを図６の如く
積層して用いていた。このような従来の構成では、消費
電力を大きくすると電池内部温度が上昇し、最悪の場合
には電池が発火又は破裂することがあった。2. Description of the Related Art Conventionally, a thin battery of this type has a structure as shown in FIG. 5, in which a positive electrode current collector is provided above and below a power generating element in which a positive electrode active material layer, an electrolyte layer and a negative electrode active material layer are layered. A body-cum-battery and a negative electrode current-collector-cell were arranged, and the adhesive resin and the current-collector-cell were integrated, and these were laminated and used as shown in FIG. In such a conventional configuration, when the power consumption is increased, the internal temperature of the battery rises, and in the worst case, the battery may ignite or burst.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記の問題
点に鑑みなされたもので、電池使用時に消費電力が大き
くなっても電池内部温度が上昇せず、また発火、破裂を
防止するヒュ−ズ機能を有し、放熱効率を高めた薄形電
池を提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and does not cause the internal temperature of the battery to rise even if the power consumption increases when the battery is used, and prevents the ignition and the explosion. The purpose of the present invention is to provide a thin battery having a negative opening function and improved heat dissipation efficiency.
【０００４】[0004]
【課題を解決するための手段】本発明は上記目的を達成
するべく、正極活物質を保持した正極集電体上端部に帯
状の正極集電端子と側端部に放熱フィンを設けること、
負極活物質を保持した負極集電体上端部に帯状の負極集
電端子と側端部に放熱フィンを設けること、該放熱フィ
ン及び集電端子部を除く集電体の周縁部に封口剤を配置
すること、該各極集電体を向き合わせて配置し互いの封
口剤を接着し電池内を減圧状態で密閉すること、各極集
電端子の帯部の一部に欠損部を設けたこと、各集電端子
が互いに横にずれて配置されていること、負極放熱フィ
ンと正極放熱フィンが互いに反対側に設けられているこ
となどを特徴とするものである。In order to achieve the above object, the present invention provides a strip-shaped positive electrode current collector terminal at the upper end of the positive electrode current collector holding a positive electrode active material and a radiation fin at the side end.
A strip-shaped negative electrode current collector terminal is provided at the upper end of the negative electrode current collector that holds the negative electrode active material, and heat radiation fins are provided at the side ends, and a sealing agent is provided at the periphery of the current collector excluding the heat radiation fin and the current collector terminal portion. Arranging, arranging the current collectors facing each other, adhering a sealing agent to each other, and sealing the inside of the battery in a depressurized state, providing a defect in a part of the band of each current collector terminal. That is, the current collecting terminals are arranged laterally offset from each other, and the negative electrode heat radiation fins and the positive electrode heat radiation fins are provided on opposite sides.
【０００５】[0005]
【作用】本発明において、集電板の上側端部に帯状の集
電端子（一部に欠損部を設ける）及び側端部に放熱フィ
ンを設けたものの中央部に活物質を保持し、さらにその
周縁部に封口剤を配置した正極集電板及び負極集電体を
互いに重ね合わせ封口する。このような電池では放熱フ
ィンが互いに独立して配置されているため、電池温度が
上がっても電気的に短絡することなく放熱でき、また集
電端子の一部欠損部により不良電池が該欠損部で切り離
され異常な温度上昇を防止する。またこれらの加工が連
続で行われるため、生産性が高く製造することができ
る。In the present invention, the current collector is provided with a band-shaped collector terminal (a part of which is provided with a cutout) at the upper end of the collector plate and a radiation fin at the side end of the collector to retain the active material in the center. A positive electrode current collector plate and a negative electrode current collector, each having a sealing agent arranged on the peripheral portion thereof, are stacked and sealed. In such a battery, since the heat radiation fins are arranged independently of each other, heat can be radiated without electrical short-circuiting even when the battery temperature rises, and a defective battery can cause a defective battery to be partially damaged. It is separated by and prevents abnormal temperature rise. Further, since these processes are continuously performed, it is possible to manufacture with high productivity.
【０００６】[0006]
【実施例】以下、本発明の詳細について、一実施例によ
り説明する。図１に示すように縦が約５４ｍｍ、横が約
８６ｍｍの正極集電体１（ステンレス製集電体）の上側
端部に一部欠損部２’を設けた正極端子２を設け、且つ
側端部に放熱フィン３（幅約６ｍｍ）を設けた。次に中
央部表面に二酸化マンガンを主成分とする正極活物質４
をスクリ−ン印刷（縦が約５０ｍｍ、横が約７６ｍｍ）
し、さらに該正極活物質の表面を覆うようにポリエチレ
ンオキシドに過塩素酸リチウムを加えた高分子固体電解
質５を同じくスクリ−ン印刷した。次にポリプロピレン
系熱接着性樹脂などからなる封口剤６を周縁に接着し
た。また図２に示すように正極集電体１とほぼ同様な形
状の負極集電体７（ステンレス製集電体）の表面にリチ
ウムから成る負極活物質８をスクリ−ン印刷し、さらに
該負極活物質の表面を覆うようにポリエチレンオキシド
に過塩素酸リチウムを加えた高分子固体電解質９を同じ
くスクリ−ン印刷した。次に前記と同様に封口剤６を周
縁に接着した。このように加工した正極集電体と負極集
電体が対向するように重ね合わせて厚み０．２〜１．０
ｍｍの発電要素を作成し、減圧下で添加物を含有したポ
リプロピレン系熱接着性樹脂などからなる封口剤６を互
いに熱融着し、集電体の内部を減圧密閉した。EXAMPLES Details of the present invention will be described below with reference to examples. As shown in FIG. 1, a positive electrode current collector 1 (stainless steel current collector) having a vertical length of about 54 mm and a horizontal length of about 86 mm is provided with a positive electrode terminal 2 having a partially defective portion 2 ', and Radiating fins 3 (width of about 6 mm) were provided at the ends. Next, a positive electrode active material 4 containing manganese dioxide as a main component was formed on the central surface.
Screen printing (vertical length is about 50 mm, horizontal length is about 76 mm)
Then, the polymer solid electrolyte 5 obtained by adding lithium perchlorate to polyethylene oxide was screen printed in the same manner so as to cover the surface of the positive electrode active material. Next, a sealing agent 6 made of polypropylene-based heat-adhesive resin or the like was adhered to the periphery. Further, as shown in FIG. 2, a negative electrode active material 8 made of lithium is screen-printed on the surface of a negative electrode current collector 7 (stainless steel current collector) having substantially the same shape as the positive electrode current collector 1, and the negative electrode current collector 8 is further printed. The polymer solid electrolyte 9 in which lithium perchlorate was added to polyethylene oxide was screen printed in the same manner so as to cover the surface of the active material. Then, the sealing agent 6 was adhered to the periphery in the same manner as described above. The positive electrode current collector and the negative electrode current collector processed in this manner are laminated so as to face each other and have a thickness of 0.2 to 1.0.
A mm power generation element was prepared, and a sealing agent 6 made of a polypropylene-based heat-adhesive resin containing an additive and the like was heat-sealed to each other under reduced pressure, and the inside of the current collector was hermetically sealed under reduced pressure.
【０００７】このようにして得られた電池の正面図を図
３に示す。正極側の端子２と負極側の端子１０及び放熱
フィン３と放熱フィン１１は互いに離れている。また図
４に図３のＡ−Ａ’部の拡大断面図を示す。A front view of the battery thus obtained is shown in FIG. The positive electrode side terminal 2, the negative electrode side terminal 10, the heat radiation fin 3 and the heat radiation fin 11 are separated from each other. Further, FIG. 4 shows an enlarged cross-sectional view of the AA ′ portion of FIG.
【０００８】本発明の実施例による電池と従来の構造の
電池の各５セルについて、高率放電時での電池温度上昇
変化を表１に示した。Table 1 shows changes in the battery temperature at the time of high rate discharge for each of the 5 cells of the battery according to the embodiment of the present invention and the battery of the conventional structure.
【０００９】 [0009]
【００１０】また、これらの電池を複数個積層させた場
合の電気的な安全性について、不良電池が電気的回路か
ら切り離されるかを調査した。従来は不良電池にも常に
電流が流れ、全体の電池特性を悪くしていたが、本発明
による電池を積層した場合は不良電池が端子の欠損部か
ら切り離されていた。Further, regarding the electrical safety when a plurality of these batteries are laminated, it was investigated whether or not the defective battery is disconnected from the electrical circuit. Conventionally, current always flows through a defective battery to deteriorate the overall battery characteristics, but when the batteries according to the present invention are stacked, the defective battery is separated from the defective portion of the terminal.
【００１１】[0011]
【発明の効果】上述したごとく、本発明は電池の安全性
を高め人が常時携帯するＩＤカ−ド、携帯用電話、メモ
リ−カ−ド、ポケットベルなど及び電気自動車に装着で
き、従来に比べて信頼性が高く工業的価値は極めて大で
ある。As described above, the present invention enhances the safety of the battery and can be installed in an ID card, a mobile phone, a memory card, a pager, etc., and an electric vehicle that a person always carries. In comparison, it is highly reliable and its industrial value is extremely high.
【図１】本発明の薄形電池の正極集電体の斜視図であ
る。FIG. 1 is a perspective view of a positive electrode current collector of a thin battery of the present invention.
【図２】本発明の薄形電池の負極集電体の斜視図であ
る。FIG. 2 is a perspective view of a negative electrode current collector of the thin battery of the present invention.
【図３】本発明の薄形電池の正面図である。FIG. 3 is a front view of the thin battery of the present invention.
【図４】本発明の薄形電池の拡大断面図である。FIG. 4 is an enlarged cross-sectional view of the thin battery of the present invention.
【図５】従来の薄形電池の斜視図である。FIG. 5 is a perspective view of a conventional thin battery.
【図６】従来の薄形電池を積層した状態の斜視図であ
る。FIG. 6 is a perspective view showing a state in which conventional thin batteries are stacked.
１ 正極集電体 ２ 正極端子 ２’ 欠損部 ３、１１ 放熱フィン ６ 封口剤 ７ 負極集電体 １０ 負極端子 １０’ 欠損部 １２ 端子 DESCRIPTION OF SYMBOLS 1 Positive electrode collector 2 Positive electrode terminal 2'missing part 3 and 11 Radiating fin 6 Sealing agent 7 Negative electrode current collector 10 Negative electrode terminal 10 'Missing part 12 terminal
Claims (4)
層状に重ねた発電要素からなる薄形電池において、正極
活物質を保持した正極集電体上端部に帯状の正極集電端
子と側端部に放熱フィンを設けること、炭素質材料を有
する負極又はリチウムからなる負極を保持した負極集電
体上端部に帯状の負極集電端子と側端部に放熱フィンを
設けること、該放熱フィン及び集電端子部を除く集電体
の周縁部に封口剤を配置すること、該各極集電体を向き
合わせて配置し互いの封口剤を接着し電池内を減圧状態
で密閉したことを特徴とする薄形電池。1. A thin battery comprising a positive electrode active material, an electrolyte layer, and a power generation element in which a negative electrode active material is laminated in layers, wherein a strip-shaped positive electrode current collector terminal and a side are provided on an upper end portion of a positive electrode current collector holding the positive electrode active material. Providing a radiation fin at the end, providing a strip-shaped negative current collector terminal at the upper end of the negative electrode current collector holding a negative electrode having a carbonaceous material or a negative electrode made of lithium, and providing a radiation fin at the side end, And disposing a sealing agent on the peripheral portion of the current collector excluding the current collecting terminal portion, arranging the respective electrode current collectors facing each other and adhering the sealing agent to each other, and sealing the inside of the battery under reduced pressure. Characteristic thin battery.
けたことを特徴とする請求項１記載の薄形電池。2. The thin battery according to claim 1, wherein a defective portion is provided in a part of a band portion of each of the current collector terminals.
ていることを特徴とする請求項１又は２記載の薄形電
池。3. The thin battery according to claim 1, wherein the current collecting terminals are arranged laterally offset from each other.
に反対側に設けられていることを特徴とする請求項１、
２又は３記載の薄形電池。4. The negative electrode heat radiation fin and the positive electrode heat radiation fin are provided on opposite sides of each other.
The thin battery according to 2 or 3.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3349531A JPH05159757A (en) | 1991-12-06 | 1991-12-06 | Thin type battery |
| EP92924870A EP0570590B1 (en) | 1991-12-06 | 1992-12-02 | Thin battery and monolithic thin battery |
| PCT/JP1992/001577 WO1993011572A1 (en) | 1991-12-06 | 1992-12-02 | Thin battery and monolithic thin battery |
| DE69218587T DE69218587T2 (en) | 1991-12-06 | 1992-12-02 | THIN BATTERY AND MONOLITICAL THIN BATTERY |
| CA002100678A CA2100678A1 (en) | 1991-12-06 | 1992-12-02 | Film type battery and layer-built film type battery |
| US08/087,682 US5401595A (en) | 1991-12-06 | 1992-12-02 | Film type battery and layer-built film type battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3349531A JPH05159757A (en) | 1991-12-06 | 1991-12-06 | Thin type battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05159757A true JPH05159757A (en) | 1993-06-25 |
Family
ID=18404356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3349531A Pending JPH05159757A (en) | 1991-12-06 | 1991-12-06 | Thin type battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05159757A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6902847B1 (en) | 1998-05-20 | 2005-06-07 | Osaka Gas Company Limited | Non-aqueous secondary cell and method for controlling the same |
| JP2005203192A (en) * | 2004-01-14 | 2005-07-28 | Toyota Motor Corp | Laminated secondary battery |
| JP2009110936A (en) * | 2007-10-10 | 2009-05-21 | Panasonic Corp | Lithium ion secondary battery |
| JP2010080325A (en) * | 2008-09-26 | 2010-04-08 | Asahi Kasei Corp | Nonaqueous lithium type storage element and method of manufacturing the same |
| JP2011510433A (en) * | 2007-12-25 | 2011-03-31 | ビーワイディー カンパニー リミテッド | Battery system for a vehicle having a separable connection |
| US8318347B2 (en) | 2007-10-10 | 2012-11-27 | Panasonic Corporation | Lithium ion secondary battery |
| US10147930B2 (en) | 2007-12-25 | 2018-12-04 | Shenzhen Byd Auto R&D Company Limited | Construction of electrochemical storage cell with conductive block |
-
1991
- 1991-12-06 JP JP3349531A patent/JPH05159757A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6951699B2 (en) | 1998-05-20 | 2005-10-04 | Osaka Gas Company Limited | Non-aqueous secondary battery and its control method |
| US6902847B1 (en) | 1998-05-20 | 2005-06-07 | Osaka Gas Company Limited | Non-aqueous secondary cell and method for controlling the same |
| US7642001B2 (en) | 1998-05-20 | 2010-01-05 | Osaka Gas Company Limited | Non-aqueous secondary battery and its control method |
| US8110303B2 (en) | 1998-05-20 | 2012-02-07 | Kri Inc. | Non-aqueous secondary battery and its control method |
| JP4590869B2 (en) * | 2004-01-14 | 2010-12-01 | トヨタ自動車株式会社 | Laminated secondary battery |
| JP2005203192A (en) * | 2004-01-14 | 2005-07-28 | Toyota Motor Corp | Laminated secondary battery |
| JP2009110936A (en) * | 2007-10-10 | 2009-05-21 | Panasonic Corp | Lithium ion secondary battery |
| JP2011040407A (en) * | 2007-10-10 | 2011-02-24 | Panasonic Corp | Lithium ion secondary battery |
| JP4695170B2 (en) * | 2007-10-10 | 2011-06-08 | パナソニック株式会社 | Lithium ion secondary battery |
| US8318347B2 (en) | 2007-10-10 | 2012-11-27 | Panasonic Corporation | Lithium ion secondary battery |
| JP2011510433A (en) * | 2007-12-25 | 2011-03-31 | ビーワイディー カンパニー リミテッド | Battery system for a vehicle having a separable connection |
| US10147930B2 (en) | 2007-12-25 | 2018-12-04 | Shenzhen Byd Auto R&D Company Limited | Construction of electrochemical storage cell with conductive block |
| US10381632B2 (en) | 2007-12-25 | 2019-08-13 | Shenzhen Byd Auto R&D Company Limited | Construction of electrochemical storage cell with conductive bridge |
| JP2010080325A (en) * | 2008-09-26 | 2010-04-08 | Asahi Kasei Corp | Nonaqueous lithium type storage element and method of manufacturing the same |
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