JPH05325923A - Flat type battery - Google Patents
Flat type batteryInfo
- Publication number
- JPH05325923A JPH05325923A JP4130409A JP13040992A JPH05325923A JP H05325923 A JPH05325923 A JP H05325923A JP 4130409 A JP4130409 A JP 4130409A JP 13040992 A JP13040992 A JP 13040992A JP H05325923 A JPH05325923 A JP H05325923A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- electrode terminal
- negative electrode
- positive electrode
- active material
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、薄形機器、例えばＩＣ
カード、電卓等の電源となる偏平形電池の改良に関する
ものである。BACKGROUND OF THE INVENTION The present invention relates to thin equipment such as ICs.
The present invention relates to improvement of a flat battery that is used as a power source for cards, calculators, etc.
【０００２】[0002]
【従来の技術】この種の電池は、図３に示すように有機
溶媒電解液を含浸させたポリプロピレン不織布からなる
セパレータ１を介在させて、金属ハロゲン化物、金属酸
化物の正極合剤２と、リチウムからなる負極活物質３の
発電要素にポリエチレン、ポリプロピレン等からなる高
分子枠体４を配備し、中央部を膨出状に突出させたステ
ンレス鋼板、あるいはステンレス鋼板上にニッケルメッ
キを施した正極端子板５と、平板状の負極端子板６の周
縁部を前記高分子枠体４と重ね合わせて１５０〜２５０
℃で加熱し、熱溶着することにより発電要素を密封口す
る構成である。この構成した電池の形状を図４に示す。
この図に示すように、外部回路との接続のために正極端
子板より接続リード部５′および負極端子板より接続リ
ード部６′を設けている。2. Description of the Related Art In this type of battery, as shown in FIG. 3, a separator 1 made of polypropylene nonwoven fabric impregnated with an organic solvent electrolyte is interposed, and a positive electrode mixture 2 of a metal halide and a metal oxide, A stainless steel plate in which a polymer frame 4 made of polyethylene, polypropylene or the like is provided in the power generation element of the negative electrode active material 3 made of lithium and the central portion is projected in a bulge shape, or a positive electrode plated with nickel on the stainless steel plate The terminal plate 5 and the peripheral portion of the flat plate-shaped negative electrode terminal plate 6 are overlapped with the polymer frame 4 to be 150 to 250.
The power generation element is sealed by heating at ℃ and heat welding. The shape of the battery thus constructed is shown in FIG.
As shown in this figure, a connection lead portion 5'is provided from the positive electrode terminal plate and a connection lead portion 6'is provided from the negative electrode terminal plate for connection with an external circuit.
【０００３】この種の電池は、主としてカード状の形態
で機器に使用される。このためカード製作は通常樹脂を
電池の表面にラミネート法、あるいは射出・押出し成型
法によって作られるため、１２０〜１３０℃の高温が電
池、および内部の回路基盤にかかる。このため高温がか
かっても電池が損なわれないようにする必要がある。This type of battery is mainly used in equipment in the form of a card. For this reason, a card is usually manufactured by laminating a resin on the surface of a battery, or by injection / extrusion molding. Therefore, a high temperature of 120 to 130 ° C. is applied to the battery and an internal circuit board. For this reason, it is necessary to prevent the battery from being damaged even when a high temperature is applied.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、この偏
平形電池は、密封口する材料にポリエチレンの高分子枠
体４を使用していることから約１２０℃以上の温度がか
かると密封口部分の密封素材が軟化、あるいは流動化
し、電池の信頼性が著しく低下する問題点があった。ま
た、極端な場合にあっては、電池内部の電解液が外部に
漏液する場合もあった。本発明は、このような問題点を
密封口部分を耐熱性の素材で被覆することで解決し、密
封部分を保護し性能の安定した電池を提供することを目
的とする。However, since the flat type battery uses the polyethylene polymer frame 4 as a material for the sealing port, the sealing port portion is sealed when a temperature of about 120 ° C. or higher is applied. There has been a problem that the material is softened or fluidized and the reliability of the battery is significantly lowered. In an extreme case, the electrolytic solution inside the battery may leak to the outside. SUMMARY OF THE INVENTION It is an object of the present invention to solve such a problem by covering the sealing opening portion with a heat-resistant material, and to provide a battery with stable performance by protecting the sealing portion.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記問題点を
解消するためにカード製作時に偏平形電池の接続リード
部を除いて耐熱性フィルムで被覆することによって解決
するものである。この一つの方法として袋状の耐熱性フ
ィルムの中に電池を挿入して包含被覆する方法。他の方
法としては偏平形電池の周縁封口部を耐熱性フィルム枠
体で挟み接着し被覆する方法である。この耐熱性フィル
ムにはポリイミド、ポリエチレンテレフタレート（以下
ＰＥＴとする。）、ＰＥＴとポリエチレンのラミネート
フィルム、ＰＥＴとポリプロピレンのラミネートフィル
ム等が有効である。In order to solve the above problems, the present invention is to solve the above problems by covering a flat battery with a heat-resistant film excluding the connecting lead portions when manufacturing the card. As one of these methods, a battery is inserted and covered in a bag-shaped heat-resistant film. As another method, there is a method in which the peripheral edge sealing portion of the flat battery is sandwiched between heat-resistant film frames and adhered and covered. Polyimide, polyethylene terephthalate (hereinafter referred to as PET), a laminated film of PET and polyethylene, a laminated film of PET and polypropylene, and the like are effective for this heat resistant film.
【０００６】[0006]
【作用】この構成により本発明の偏平形電池は、カード
製作時において１２０〜１４０℃程度の高温がかかって
も密封口部に影響が少なく、高信頼性を確保できる。こ
れは、電池の表面を耐熱性フィルムで覆うことにより、
フィルムによる断熱効果によって封口部の高分子枠体に
伝わる温度が２０〜３０℃低くできるためである。With this structure, the flat battery of the present invention has a small influence on the sealing opening even when a high temperature of about 120 to 140 ° C. is applied during the manufacture of the card, and high reliability can be secured. By covering the surface of the battery with a heat resistant film,
This is because the temperature transmitted to the polymer frame of the sealing portion can be lowered by 20 to 30 ° C. due to the heat insulating effect of the film.
【０００７】[0007]
【実施例】以下本発明について実施例により詳述する。EXAMPLES The present invention will be described in detail below with reference to examples.
【０００８】図１に本発明の一実施例を示す。この偏平
形電池は、プロピレンカーボネートに過塩素酸リチウム
を含有した電解液を含浸させたポリプロピレン不織布か
らなるセパレータ１の上面に二酸化マンガンの活物質を
主成分とする正極合剤２と下面に金属リチウムを用いた
負極活物質３を配備し、その周辺部にポリエチレンから
なる高分子枠体４と両面にステンレス鋼板からなる正極
端子板５とステンレス鋼板からなる負極端子板６を配備
して、その高分子枠体４と正極端子板５、負極端子板６
とを熱溶着により封止し電池を構成する。次に袋状のＰ
ＥＴにポリエチレンをラミネートとした厚みが１００μ
のフィルム７内に電池を挿入し、開口部を熱溶着により
包被して作られる。このときの正極端子板の接続リード
部５′および負極端子板の接続リード部６′は露出した
状態とする。こうして得られた本発明電池を電池Ａとす
る。次に上記と同様にして電池を構成し、図２に示すよ
うに電池の封口周縁部にＰＥＴの片面に接着剤を塗布
し、厚みが１００μの接着性ＰＥＴフィルムの枠体８を
電池の両面に配置し、接着固定し被覆する。こうして得
られた本発明電池を電池Ｂとする。次に上記と同様にし
て電池を構成した電池単体の図３に示す従来の電池を電
池Ｃとする。上記電池Ａ，Ｂ，Ｃそれぞれの電池につい
て、温度が１２０℃，１３０℃，１４０℃，１５０℃の
熱板を圧力１５kg／cm2で１０秒間電池に押し当てた時
の電池の封口部分における破損・損傷を比較した。各温
度について電池をそれぞれ１０個ずつ試験を行ない電池
内部の電解液が外部に出てきたものを不良とした。この
不良数を表１に示す。FIG. 1 shows an embodiment of the present invention. This flat-type battery comprises a positive electrode mixture 2 containing a manganese dioxide active material as a main component on the upper surface of a separator 1 made of a polypropylene nonwoven fabric in which propylene carbonate is impregnated with an electrolyte solution containing lithium perchlorate, and metallic lithium on the lower surface. A negative electrode active material 3 using the above is disposed, and a polymer frame 4 made of polyethylene, a positive electrode terminal plate 5 made of a stainless steel plate and a negative electrode terminal plate 6 made of a stainless steel plate are placed on both sides of the polymer frame 4, and Molecular frame 4, positive electrode terminal plate 5, negative electrode terminal plate 6
And are sealed by heat welding to form a battery. Next, the bag-shaped P
Thickness of ET laminated with polyethylene is 100μ
The battery is inserted into the film 7 and the opening is covered by heat welding. At this time, the connecting lead portion 5'of the positive electrode terminal plate and the connecting lead portion 6'of the negative electrode terminal plate are exposed. The battery of the present invention thus obtained is referred to as Battery A. Next, a battery is constructed in the same manner as above, and as shown in FIG. 2, an adhesive is applied to one side of the PET on the periphery of the sealing edge of the battery and the frame body 8 of the adhesive PET film having a thickness of 100 μ is attached to both sides of the battery. Place on, adhere and fix and cover. The battery of the present invention thus obtained is referred to as Battery B. Next, a conventional battery shown in FIG. 3 which is a single battery having a battery constructed in the same manner as above will be referred to as a battery C. Regarding each of the batteries A, B, and C, damage to the sealing portion of the battery when a hot plate having a temperature of 120 ° C., 130 ° C., 140 ° C., and 150 ° C. was pressed against the battery at a pressure of 15 kg / cm 2 for 10 seconds・ Comparison of damage. Ten batteries were tested for each temperature, and one in which the electrolytic solution inside the battery came out was determined to be defective. The number of defects is shown in Table 1.
【０００９】[0009]
【表１】 [Table 1]
【００１０】（表１）より従来電池Ｃは、１２０℃の熱
板を押し当てた時に１０個の試験に対して４個の不良が
あった。それに対して本発明電池Ａは、１４０℃の温度
に耐えることができた。また、本願発明電池Ｂは１３０
℃の温度まで耐えることができた。この電池内部の電解
液が外部に出てくる箇所は、電池を熱溶着により封止し
ている高分子枠体４と正極端子板５の界面、あるいは高
分子枠体４と負極端子板６の界面であった。この現象
は、ポリエチレンを用いた高分子枠体４の軟化点が１１
５℃であるために、１１５℃以上の温度がかかると高分
子枠体４が軟化して正極端子板５と負極端子板６との溶
着面が不安定になり、この部分から電解液が押し出され
ることによるものである。従来電池Ｃの場合、１２０℃
の熱板を押し当てた時の高分子枠体４にかかる温度は１
１５℃であり、１３０℃の熱板を押し当てた時は１２３
℃であった。一方本発明電池Ａは、１２０℃，１３０
℃，１４０℃，１５０℃の熱板を押し当てた時の高分子
枠体４にかかる温度はそれぞれ９０℃，９９℃，１０７
℃，１１５℃であり、本発明電池Ｂにおいてはそれぞれ
１００℃，１１１℃，１２１℃，１３０℃であった。１
２０℃の熱板を押し当てた時の高分子枠体４に伝わる温
度を比較すると、従来電池Ｃの１１５℃に比較して本発
明電池Ａは２５℃、本発明電池Ｂは１５℃低くなってい
る。従って同一温度の熱をかけた場合、高分子枠体４に
かかる温度が従来電池Ｃに比べて低くなることから高温
での使用に耐えることができるものである。尚、ここで
は本発明電池Ａの耐熱性フィルム７としてＰＥＴにポリ
エチレンをラミネートしたフィルムを使用したが、ＰＥ
Ｔにポリプロピレンをラミネートしたフィルムについて
も同様な結果が得られた。From Table 1, the conventional battery C had 4 defects in 10 tests when the hot plate at 120 ° C. was pressed. On the other hand, the present battery A was able to withstand a temperature of 140 ° C. In addition, the present invention battery B is 130
It was able to withstand temperatures up to ℃. The electrolytic solution in the battery is exposed to the outside at the interface between the polymer frame 4 and the positive electrode terminal plate 5 that seal the battery by heat welding, or between the polymer frame 4 and the negative electrode terminal plate 6. It was an interface. This phenomenon is caused by the softening point of the polymer frame 4 made of polyethylene being 11
Since the temperature is 5 ° C, when the temperature of 115 ° C or higher is applied, the polymer frame 4 is softened and the welding surface between the positive electrode terminal plate 5 and the negative electrode terminal plate 6 becomes unstable, and the electrolytic solution is extruded from this part. It is due to For conventional battery C, 120 ° C
The temperature applied to the polymer frame 4 when pressing the hot plate of is 1
15 ℃, 123 when the hot plate of 130 ℃ is pressed
It was ℃. On the other hand, the battery A of the present invention is
The temperatures applied to the polymer frame 4 when the hot plates of ℃, 140 ℃ and 150 ℃ are pressed are 90 ℃, 99 ℃ and 107 ℃, respectively.
C., 115 ° C., and in Battery B of the present invention, they were 100 ° C., 111 ° C., 121 ° C., and 130 ° C., respectively. 1
Comparing the temperatures transmitted to the polymer frame 4 when a hot plate of 20 ° C. is pressed, the battery A of the present invention is 25 ° C. lower and the battery B of the present invention B is 15 ° C. lower than the 115 ° C. of the conventional battery C. ing. Therefore, when heat of the same temperature is applied, the temperature applied to the polymer frame 4 becomes lower than that of the conventional battery C, so that it can withstand use at high temperature. In addition, here, a film obtained by laminating polyethylene on PET was used as the heat-resistant film 7 of the battery A of the present invention.
Similar results were obtained for a film obtained by laminating T on polypropylene.
【００１１】また、上記結果より本発明電池Ｂに比べて
本発明電池Ａの方が効果が大きい。この本発明電池Ａ
は、電池全体を耐熱性フィルムで覆っているのに対して
本発明電池Ｂは、電池の周縁部のみを耐熱性フィルムで
覆っていることによるものである。しかし、本発明電池
Ｂは厚みの小さい周縁部０．２mmの所のみに耐熱性フィ
ルムを配備することから、電池の中央部、厚み０．５mm
を越えないため電池の薄さを保つことができるものであ
る。From the above results, the battery A of the present invention is more effective than the battery B of the present invention. This invention battery A
Is because the whole battery is covered with the heat resistant film, whereas the battery B of the present invention covers only the peripheral portion of the battery with the heat resistant film. However, in the battery B of the present invention, the heat-resistant film is provided only at the peripheral portion of 0.2 mm where the thickness is small.
It is possible to keep the battery thin because it does not exceed.
【００１２】[0012]
【発明の効果】以上より明らかなように本発明の電池に
耐熱性フィルムを覆うことにより、従来の電池より耐熱
性が優れるものであり、カードの電源として使用する際
のカードの製造工程であるラミネート、あるいは樹脂成
型での高温に密封口部分が耐えうるものであり、電池の
信頼性を向上できる。As is apparent from the above, by covering the battery of the present invention with the heat resistant film, the battery has more excellent heat resistance than the conventional battery, and is a manufacturing process of a card when used as a power source for the card. The sealed portion can withstand the high temperature of lamination or resin molding, and the reliability of the battery can be improved.
【図１】本発明の一実施例を示す断面図FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】本発明の他の実施例を示す断面図FIG. 2 is a sectional view showing another embodiment of the present invention.
【図３】従来電池の実施例を示す断面図FIG. 3 is a sectional view showing an example of a conventional battery.
【図４】従来電池の実施例を示す立体斜視図FIG. 4 is a perspective view showing an example of a conventional battery.
１ セパレータ ２ 正極合剤 ３ 負極活物質 ４ 高分子枠体 ５ 正極端子板 ５′ 正極端子板の接続リード部 ６ 負極端子板 ６′ 負極端子板の接続リード部 ７ 耐熱性フィルム ８ 耐熱性フィルム枠体 DESCRIPTION OF SYMBOLS 1 Separator 2 Positive electrode mixture 3 Negative electrode active material 4 Polymer frame 5 Positive electrode terminal plate 5 ′ Positive electrode terminal plate connection lead portion 6 Negative electrode terminal plate 6 ′ Negative electrode terminal plate connection lead portion 7 Heat resistant film 8 Heat resistant film frame body
Claims (2)
在させた発電要素と、この発電要素の周縁に高分子枠体
を配置し、正、負極端子板で発電要素を包合して高分子
枠体を溶着させて密封した偏平形電池であって、偏平形
電池の接続リード部を除いて電池全体を耐熱性フィルム
で被覆したことを特徴とする偏平形電池。1. A power generating element in which a separator is interposed between a positive electrode mixture and a negative electrode active material, and a polymer frame is arranged around the power generating element, and the power generating element is incorporated with positive and negative electrode terminal plates. What is claimed is: 1. A flat type battery in which a polymer frame is welded and hermetically sealed, wherein the entire battery is covered with a heat resistant film except for the connecting lead portions of the flat type battery.
在させた発電要素と、この発電要素の周縁に高分子枠体
を配置し、正、負極端子板で発電要素を包合して、高分
子枠体を溶着させて密封した偏平形電池であって、偏平
形電池の接続リード部を除いて電池周縁部を耐熱性フィ
ルム枠体で挟み込み、その耐熱性フィルムを偏平形電池
の外装部と接着し被覆したことを特徴とする偏平形電
池。2. A power generating element in which a separator is interposed between a positive electrode mixture and a negative electrode active material, and a polymer frame is arranged around the power generating element, and the power generating element is incorporated with positive and negative electrode terminal plates. A flat battery in which a polymer frame is welded and sealed, and the periphery of the battery is sandwiched by a heat-resistant film frame except the connection lead part of the flat battery, and the heat-resistant film is packaged on the exterior of the flat battery. A flat type battery characterized in that it is adhered to and covered with a portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4130409A JPH05325923A (en) | 1992-05-22 | 1992-05-22 | Flat type battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4130409A JPH05325923A (en) | 1992-05-22 | 1992-05-22 | Flat type battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05325923A true JPH05325923A (en) | 1993-12-10 |
Family
ID=15033587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4130409A Pending JPH05325923A (en) | 1992-05-22 | 1992-05-22 | Flat type battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05325923A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001176467A (en) * | 1999-12-15 | 2001-06-29 | Sony Corp | Battery |
| JP2006172766A (en) * | 2004-12-13 | 2006-06-29 | Ngk Spark Plug Co Ltd | Thin battery and its manufacturing method |
| US20110189528A1 (en) * | 2008-09-05 | 2011-08-04 | Renata Ag | Thin film battery |
| JP2015031679A (en) * | 2013-08-07 | 2015-02-16 | 昭和電工株式会社 | X-ray diffraction measurement method of laminate type electrochemical device |
| WO2016111542A1 (en) * | 2015-01-06 | 2016-07-14 | 주식회사 엘지화학 | Electrode assembly with improved stability and secondary battery comprising same |
-
1992
- 1992-05-22 JP JP4130409A patent/JPH05325923A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001176467A (en) * | 1999-12-15 | 2001-06-29 | Sony Corp | Battery |
| JP4590667B2 (en) * | 1999-12-15 | 2010-12-01 | ソニー株式会社 | battery |
| JP2006172766A (en) * | 2004-12-13 | 2006-06-29 | Ngk Spark Plug Co Ltd | Thin battery and its manufacturing method |
| US20110189528A1 (en) * | 2008-09-05 | 2011-08-04 | Renata Ag | Thin film battery |
| US10033048B2 (en) * | 2008-09-05 | 2018-07-24 | Renata Ag | Thin film battery |
| JP2015031679A (en) * | 2013-08-07 | 2015-02-16 | 昭和電工株式会社 | X-ray diffraction measurement method of laminate type electrochemical device |
| WO2016111542A1 (en) * | 2015-01-06 | 2016-07-14 | 주식회사 엘지화학 | Electrode assembly with improved stability and secondary battery comprising same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW396651B (en) | Non-aqueous thin battery | |
| EP0147465B1 (en) | Flat battery | |
| US4732825A (en) | Flat cell | |
| JPH11288698A (en) | Secondary battery | |
| JPH1055792A (en) | Thin battery | |
| JP2013097931A (en) | Manufacturing method of electrochemical element of thin film type | |
| JP2001250517A (en) | Battery | |
| JP4704669B2 (en) | Flat plate electrochemical cell and manufacturing method thereof | |
| JPH05325923A (en) | Flat type battery | |
| KR102132844B1 (en) | Secondary battery | |
| JPH0547360A (en) | Thin battery | |
| JP2000235845A (en) | Thin battery | |
| JP2000353498A (en) | Manufacture of thin battery | |
| JPH087859A (en) | Flat cell and manufacture thereof | |
| JPS6129065A (en) | Flat type nonaqueous electrolyte cell | |
| JPS60220553A (en) | Flat-type nonaqueous electrolyte cell | |
| KR100551397B1 (en) | Pouch type lithium secondary battery | |
| JPH0778604A (en) | Flat type battery | |
| JPH07130352A (en) | Flat type battery | |
| WO2023276284A1 (en) | Electrochemical cell and method for producing same | |
| JPS62226558A (en) | Flat type battery | |
| JPS61267259A (en) | Manufacture of flat battery | |
| JPS62188163A (en) | Flat type battery | |
| JPH01183061A (en) | Flat type battery | |
| JPS5918563A (en) | Manufacture of flat battery |