JP2007073299A - Battery - Google Patents

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JP2007073299A
JP2007073299A JP2005257850A JP2005257850A JP2007073299A JP 2007073299 A JP2007073299 A JP 2007073299A JP 2005257850 A JP2005257850 A JP 2005257850A JP 2005257850 A JP2005257850 A JP 2005257850A JP 2007073299 A JP2007073299 A JP 2007073299A
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battery
terminal
insulating tape
positive electrode
negative electrode
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JP4961699B2 (en
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Atsushi Yagisawa
淳 八木沢
Takaaki Morimura
高明 森村
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Sony Corp
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To dispense with heat shrinking process, lessen the thickness, reduce the number of components, and shorten time of a production process. <P>SOLUTION: A terminal 18 is welded to an anode cup 14 of a flat battery 11, and a terminal 21 is welded to a cathode can 21. Each of the terminal 18 and 21 and lead wires 19, 22 are connected to each other. An insulating tape 31, having width somewhat larger than that of the flat battery, is wound around the flat battery 11, with its width direction crossing the lead wires 19, 22. The terminal 18 is welded with the anode cup 14 through an opening formed in the insulating tape 31. The insulating tape 31 is wound twice around the anode cup 14, and twice around the cathode can 12. The vicinity of the contact part of the terminal 18 with the lead wire 19 is pinched by the insulating tape 31 and short circuiting is prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、ボタン型電池またはコイン型電池に適用され、特に、リード線が電池に接続された構成の電池に関する。   The present invention is applied to a button-type battery or a coin-type battery, and particularly relates to a battery having a configuration in which a lead wire is connected to the battery.

電池の一つとして、小さな薄い円板状のボタン型電池が知られている。ボタン型電池と同様の形状を有し、リチウム電池（１次または２次電池）がコイン型電池と呼ばれている。ボタン型電池およびコイン型電池を総称して偏平型電池と呼ぶことにする。例えばノート形のパーソナルコンピュータ、ＰＤＡ(Personal Digital Assistants)等のメモリバッ
クアップ用に使用されるコイン型電池の場合、ワイヤーハーネスと称されるリード線が予めコイン型電池に接続され、電池と反対端にコネクタが接続されたものが使用される。 As one of the batteries, a small thin disk-shaped button type battery is known. A lithium battery (primary or secondary battery) has the same shape as a button battery, and is called a coin battery. The button type battery and the coin type battery are collectively referred to as a flat type battery. For example, in the case of a coin-type battery used for memory backup, such as a notebook personal computer or PDA (Personal Digital Assistants), a lead wire called a wire harness is connected to the coin-type battery in advance and is connected to the opposite end of the battery. The one to which the connector is connected is used.

ノート形パーソナルコンピュータ等の電子製品では、高温の環境となるため、耐熱性が安全性の点から要求される。例えば従来のコイン型電池にリード端子を接続した構成の電池が下記の特許文献１に記載されている。特許文献１には、缶やタブ端子と樹脂材との密着性を向上させるために、被覆樹脂を施す前に予めマスク材によってタブ端子をマスクし、全体を被覆材を付着させ、その後、マスク材を除去することが記載されている。   An electronic product such as a notebook personal computer has a high temperature environment, and therefore heat resistance is required from the viewpoint of safety. For example, a battery having a configuration in which a lead terminal is connected to a conventional coin-type battery is described in Patent Document 1 below. In Patent Document 1, in order to improve the adhesion between the can and the tab terminal and the resin material, the tab terminal is previously masked with a mask material before the coating resin is applied, and the entire coating material is adhered, and then the mask is applied. The removal of material is described.

特開平４−２４２８２４９号公報Japanese Patent Laid-Open No. 4-24428249

図６Ａおよび図６Ｂは、従来の電池の構成例を示す。参照符号１が偏平型電池を示し、偏平型電池１の負極カップ２と端子３とが溶接され、端子３から導出されたリード線４の先端がコネクタ５に接続されている。また、偏平型電池１の正極缶６と端子７とが溶接され、端子７から導出されたリード線８がコネクタ５に接続されている。   6A and 6B show a configuration example of a conventional battery. Reference numeral 1 denotes a flat battery, the negative electrode cup 2 of the flat battery 1 and the terminal 3 are welded, and the tip of the lead wire 4 led out from the terminal 3 is connected to the connector 5. Further, the positive electrode can 6 and the terminal 7 of the flat battery 1 are welded, and the lead wire 8 led out from the terminal 7 is connected to the connector 5.

図６Ａに示す例では、負極側の端子３とリード線４の接続部付近を絶縁チューブ９（斜線を付して示す）で端子の溶接前に覆うことによって、リード線４が折れ曲がって正極缶６と接触してショートすることが防止されている。そして、端子３および７を溶接後に偏平型電池１の表面が外装チューブ１０によって被覆される。電池１の負極カップ２、正極缶６およびリード線４、８が導出されていない側面が外装チューブ１０によって被覆される。   In the example shown in FIG. 6A, the lead wire 4 is bent by covering the vicinity of the connecting portion between the terminal 3 on the negative electrode side and the lead wire 4 with an insulating tube 9 (shown with hatching) before the terminal is welded. 6 is prevented from being short-circuited. After the terminals 3 and 7 are welded, the surface of the flat battery 1 is covered with the outer tube 10. The side surface where the negative electrode cup 2, the positive electrode can 6, and the lead wires 4 and 8 of the battery 1 are not led out is covered with the outer tube 10.

図６Ｂは、従来の電池の他の構成例を示す。図６Ｂに示す例では、端子３とリード線４との接続部付近を絶縁チューブで被覆しないで、電池の側面の正極缶の部分を被覆する絶縁チューブ１０’を設けるようにしたものである。   FIG. 6B shows another configuration example of a conventional battery. In the example shown in FIG. 6B, the insulating tube 10 ′ that covers the positive electrode can portion on the side surface of the battery is provided without covering the vicinity of the connection portion between the terminal 3 and the lead wire 4 with the insulating tube.

絶縁チューブ９、外装チューブ１０、絶縁チューブ１０’としては、密着させるために熱収縮性樹脂チューブが使用される。外装チューブ１０としては、安全性の点から難燃性のものが使用される。具体的には、ＵＬ(Underwriters Laboratories Inc.：米国保険業
者安全試験所) 規格の認定品が使用される。具体的には、VW-1になり、これは、UL224規
格およびＣＳＡ(Canadian Standards Association:カナダ規格協会)規格に規定されるグ
レードで、垂直難燃試験に合格する製品のみが認定を受けることができる。このような規格の認定品の外装チューブ１０は、収縮後の厚みが０．２〜０．２５mmとなる。 As the insulating tube 9, the outer tube 10, and the insulating tube 10 ′, a heat-shrinkable resin tube is used in order to adhere them. As the outer tube 10, a flame retardant tube is used from the viewpoint of safety. Specifically, UL (Underwriters Laboratories Inc.) certified products are used. Specifically, it becomes VW-1, which is a grade specified in UL224 standard and CSA (Canadian Standards Association) standard, and only products that pass the vertical flame retardant test may be certified. it can. The outer tube 10 of the certified product of such a standard has a thickness after shrinkage of 0.2 to 0.25 mm.

また、絶縁チューブ９および１０’としては、絶縁性を有する樹脂が使用される。端子３とリード線４の接続部付近に被覆される絶縁チューブ９は、例えば収縮後に０．１５mmの厚みとなる。さらに、溶接を確実するために、図６Ａの例では、絶縁チューブ９のために端子３と電池表面との間に段差が生じるので、負極側の端子３にエンボス加工を行う必要がある。図６Ｂの例では、絶縁チューブ１０’のために、負極側端子３および正極側端子７のそれぞれと電池表面との間に段差が生じるので、端子３および７の両方にエンボス加工を行う必要がある。   Further, as the insulating tubes 9 and 10 ', an insulating resin is used. The insulating tube 9 covered in the vicinity of the connection portion between the terminal 3 and the lead wire 4 has a thickness of 0.15 mm after shrinkage, for example. Furthermore, in order to ensure welding, in the example of FIG. 6A, a step is generated between the terminal 3 and the battery surface due to the insulating tube 9, so that it is necessary to emboss the terminal 3 on the negative electrode side. In the example of FIG. 6B, because of the insulating tube 10 ′, a step is generated between each of the negative electrode side terminal 3 and the positive electrode side terminal 7 and the battery surface. Therefore, it is necessary to emboss both the terminals 3 and 7. is there.

上述した熱収縮チューブを使用する場合には、加熱の際に電池への熱影響が生じるおそれがあった。また、端子３とリード線４の接続部付近を予め絶縁チューブ９で覆っておく構成は、端子の溶接条件が影響を受ける問題がある。さらに、ノート形パーソナルコンピュータ等の電子製品の小型化、薄形化に伴い、搭載される偏平型電池も、なるべく薄いことが望まれている。従来の構造は、薄くすることが難しかった。   In the case of using the above-described heat shrinkable tube, there is a possibility that the battery may be affected by heat during heating. In addition, the configuration in which the vicinity of the connection portion between the terminal 3 and the lead wire 4 is previously covered with the insulating tube 9 has a problem that the welding conditions of the terminal are affected. Furthermore, with the downsizing and thinning of electronic products such as notebook personal computers, it is desired that the flat battery to be mounted be as thin as possible. The conventional structure has been difficult to thin.

例えば厚みが２mmの偏平型電池を例にとると、図６Ａの構成例では、電池全体の厚み＝（電池本体の厚み＋端子３および７の厚み＋絶縁チューブ９の厚み＋外装チューブ１０の厚み）＝（２mm＋（０．２mm×２＝０．４mm）＋（０．２５mm×２＝０．５mm）＋（０．１５mm×２＝０．３mm）＝３．２mm）となる。また、図６Ｂの構成では、電池全体の厚み＝（電池本体の厚み＋端子３および７の厚み＋絶縁チューブ９の厚み＝（２mm＋（０．２mm×２＝０．４mm）＋（０．２５mm×２＝０．５mm＝２．９mm）となる。   For example, when a flat battery having a thickness of 2 mm is taken as an example, in the configuration example of FIG. 6A, the thickness of the entire battery = (thickness of battery body + thickness of terminals 3 and 7 + thickness of insulating tube 9 + thickness of outer tube 10). ) = (2 mm + (0.2 mm × 2 = 0.4 mm) + (0.25 mm × 2 = 0.5 mm) + (0.15 mm × 2 = 0.3 mm) = 3.2 mm). 6B, the thickness of the entire battery = (the thickness of the battery body + the thickness of the terminals 3 and 7 + the thickness of the insulating tube 9 = (2 mm + (0.2 mm × 2 = 0.4 mm) + (0.25 mm). × 2 = 0.5 mm = 2.9 mm).

したがって、この発明の目的は、加熱処理を不要とし、厚みを薄くでき、部品点数を少なくし、組み立て工程を簡略化することが可能な電池を提供することにある。   Accordingly, an object of the present invention is to provide a battery that can eliminate the heat treatment, reduce the thickness, reduce the number of components, and simplify the assembly process.

上述した課題を解決するために、この発明は、
缶状の正極と正極の開口を覆うように配されたカップ状の負極とが配された偏平型電池と、
負極および正極のそれぞれと接続された第１および第２の端子と、
第１および第２の端子とそれぞれ接続された第１および第２のリード線と、
幅が偏平型電池の幅よりやや大とされ、幅方向が第１および第２のリード線と交叉する方向で、偏平型電池に対して巻かれた絶縁および難燃性の粘着テープとを備え、
第１の端子が粘着テープに形成された開口を通じて、負極に接続され、
粘着テープが負極上に少なくとも２回巻かれると共に、正極上に少なくとも１回巻かれる電池である。 In order to solve the above-described problems, the present invention provides:
A flat battery in which a can-shaped positive electrode and a cup-shaped negative electrode arranged so as to cover the opening of the positive electrode are disposed;
First and second terminals connected to the negative electrode and the positive electrode, respectively;
First and second lead wires respectively connected to the first and second terminals;
Insulation and flame-retardant adhesive tape wound on the flat battery in such a manner that the width is slightly larger than the width of the flat battery and the width direction intersects the first and second lead wires. ,
The first terminal is connected to the negative electrode through the opening formed in the adhesive tape,
A battery in which the adhesive tape is wound at least twice on the negative electrode and at least once on the positive electrode.

この発明によれば、粘着テープを使用して外装を行い、端子の絶縁を行うので、熱収縮工程を不要とでき、電池への熱影響のおそれをなくすことができる。また、熱収縮性チューブと比較してより厚みが薄いテープを使用するので、電池全体の厚みを薄くでき、電子機器の狭いスペースに搭載することが可能となる。さらに、テープ以外の部品が不要で、部品点数を少なくでき、また、作製工程に要する時間を短くできる。   According to the present invention, since the exterior is performed using the adhesive tape and the terminals are insulated, the heat shrinking step can be omitted, and the risk of thermal influence on the battery can be eliminated. In addition, since a tape having a smaller thickness than that of the heat-shrinkable tube is used, the thickness of the entire battery can be reduced, and the electronic device can be mounted in a narrow space. Furthermore, parts other than the tape are unnecessary, the number of parts can be reduced, and the time required for the manufacturing process can be shortened.

以下、この発明の一実施の形態について図面を参照しながら説明する。図１は、一実施の形態の拡大断面図である。但し、図面が不鮮明となることを防止する意味で、斜線は、端子の断面に対してのみ付されている。   An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged cross-sectional view of an embodiment. However, in order to prevent the drawing from becoming unclear, diagonal lines are given only to the cross section of the terminal.

偏平型電池１１について概略的に説明する。偏平型電池１１は、缶状の正極缶１２と、正極缶１２の開口がガスケット１３を介して負極カップ１４によって封止された構造を有している。正極缶１２内には、電池の種類に応じた正極活物質を含む正極合剤１５が収容され、負極カップ１４内には、正極１５とセパレータ１６を介して電池の種類に応じた負極活物質を含む負極合剤１７が配され、電解液が注入されている。偏平型電池１１の一例は、リチウムイオン二次電池である。但し、この発明では、偏平型電池１１の具体的種類が限定されないので、偏平型電池１１としては、ボタン型電池、コイン型電池の何れを使用しても良く、１次電池および２次電池の何れであっても良い。   The flat battery 11 will be schematically described. The flat battery 11 has a structure in which a can-like positive electrode can 12 and an opening of the positive electrode can 12 are sealed by a negative electrode cup 14 via a gasket 13. A positive electrode mixture 15 containing a positive electrode active material corresponding to the type of battery is accommodated in the positive electrode can 12, and a negative electrode active material corresponding to the type of battery is accommodated in the negative electrode cup 14 via the positive electrode 15 and the separator 16. The negative electrode mixture 17 containing is arranged, and the electrolytic solution is injected. An example of the flat battery 11 is a lithium ion secondary battery. However, in the present invention, since the specific type of the flat battery 11 is not limited, either a button battery or a coin battery may be used as the flat battery 11. Either may be sufficient.

電池１１の負極カップ１４に対して端子１８が溶接される。この場合、端子１８および負極カップ１４の表面にエンボスのような突起を設ける必要はない。端子１８に対してリード線１９が接続されている。端子１８とリード線１９とは、圧着、溶接等で予め接続されている。リード線１９は、端子１８との接続部付近以外では、絶縁材料で予め被覆されている。図１には示されていないが、後述するように、リード線１９がコネクタ２０に接続されている。   A terminal 18 is welded to the negative electrode cup 14 of the battery 11. In this case, it is not necessary to provide protrusions such as embosses on the surfaces of the terminal 18 and the negative electrode cup 14. A lead wire 19 is connected to the terminal 18. The terminal 18 and the lead wire 19 are connected in advance by crimping, welding, or the like. The lead wire 19 is previously coated with an insulating material except in the vicinity of the connection portion with the terminal 18. Although not shown in FIG. 1, the lead wire 19 is connected to the connector 20 as will be described later.

正極缶１２に対し端子２１が溶接される。端子２１に対してリード線２２が圧着、溶接等で予め接続されている。リード線２２がコネクタ２０に対して接続されている。リード線２２は、端子２１との接続部付近以外は、絶縁材料で予め被覆されている。   A terminal 21 is welded to the positive electrode can 12. A lead wire 22 is connected to the terminal 21 in advance by crimping, welding or the like. A lead wire 22 is connected to the connector 20. The lead wire 22 is covered in advance with an insulating material except in the vicinity of the connection portion with the terminal 21.

一実施の形態では、リード線１９および２２の先端の端子１８および２１が偏平型電池１１の負極カップ１４および正極缶１２に対してそれぞれ溶接された状態で、偏平型電池１１の外周面に対して、リード線１９および２２の延長方向に対して絶縁および難燃性の粘着テープ（以下、絶縁テープと称する）３１の長さ方向が交叉（ほぼ直交）するように、絶縁テープ３１が巻き付けられ、絶縁テープ３１が外装材として使用される。絶縁テープ３１を巻き付ける作業は、手で行うことができる。   In one embodiment, the terminals 18 and 21 at the tips of the lead wires 19 and 22 are welded to the negative electrode cup 14 and the positive electrode can 12 of the flat battery 11, respectively, and are connected to the outer peripheral surface of the flat battery 11. Then, the insulating tape 31 is wound so that the length direction of the insulating and flame-retardant adhesive tape (hereinafter referred to as insulating tape) 31 intersects (substantially orthogonal) with respect to the extending direction of the lead wires 19 and 22. The insulating tape 31 is used as an exterior material. The work of winding the insulating tape 31 can be performed by hand.

この発明の一実施の形態について、絶縁テープ３１を偏平型電池１１に巻き付ける順序にしたがってさらに説明する。図２は、絶縁テープ３１が展開された状態を示している。絶縁テープ３１は、ポリエステルフィルム（主成分：ポリエチレンテレフタレート）の基材の片面に接着層を有する粘着テープで、難燃性のものである。好ましくは、絶縁テープ３１がＵＬ規格(UL 510（絶縁テープの燃焼性試験))の試験基準を合格したものである。
この種の絶縁テープ３１の厚みは、０．０５５mmである。 An embodiment of the present invention will be further described in the order of winding the insulating tape 31 around the flat battery 11. FIG. 2 shows a state in which the insulating tape 31 is unfolded. The insulating tape 31 is a pressure-sensitive adhesive tape having an adhesive layer on one side of a base material of a polyester film (main component: polyethylene terephthalate) and is flame retardant. Preferably, the insulating tape 31 has passed the test standard of UL standard (UL 510 (flammability test of insulating tape)).
The thickness of this type of insulating tape 31 is 0.055 mm.

絶縁テープ３１の幅は、偏平型電池の直径（例えば１２mm、１６mm、２０mm等）よりやや大きいものとされている。少なくとも端子１８および２１のそれぞれとリード線１９および２２の接続部付近を覆う幅が必要とされる。絶縁テープ３１の全長は、負極カップ１４の表面を少なくとも２回重ねて巻き、正極缶１２の円形表面を少なくとも１回巻くに足りる長さとされる。一実施の形態では、負極カップ１４および正極缶１２のそれぞれの表面に２回ずつ絶縁テープ３１が巻かれるようになされている。   The width of the insulating tape 31 is slightly larger than the diameter of the flat battery (for example, 12 mm, 16 mm, 20 mm, etc.). A width that covers at least the vicinity of the connection between each of the terminals 18 and 21 and the lead wires 19 and 22 is required. The total length of the insulating tape 31 is long enough to wrap the surface of the negative electrode cup 14 at least twice and wind the circular surface of the positive electrode can 12 at least once. In one embodiment, the insulating tape 31 is wound around the surfaces of the negative electrode cup 14 and the positive electrode can 12 twice.

絶縁テープ３１の巻き付け開始側の端部の近傍には、絶縁テープ３１の幅方向に延びる長穴状の開口３２が形成されている。図２に示すように、偏平型電池１１の負極カップ１４上の端子１８を溶接する領域が露出するように、開口３２の位置を合わせて偏平型電池１１の負極カップ１４に対して絶縁テープ３１の巻き付け開始側の端部を貼り付ける。   An elongated hole-like opening 32 extending in the width direction of the insulating tape 31 is formed in the vicinity of the end on the winding start side of the insulating tape 31. As shown in FIG. 2, the opening 32 is aligned so that the region where the terminal 18 on the negative electrode cup 14 of the flat battery 11 is welded is exposed, and the insulating tape 31 is attached to the negative cup 14 of the flat battery 11. Paste the end of the winding start side.

次に、図３に示すように、開口３２を通じて露出している負極カップ１４の表面に対して端子１８を溶接する。この結果、端子１８とリード線１９との接続部付近のリード線１９が絶縁されていない部分の下側に絶縁テープ３１が位置する。すなわち、絶縁テープ３１がリード線１９と正極缶１２の側面との間に存在し、リード線１９が仮に屈曲しても、リード線１９が正極缶１２に接触することが防止され、ショートを防止することができる。偏平型電池１１の正極缶１２の表面に対して、リード線２２と接続された端子２１（図１参照）が溶接される。リード線１９および２２の端部には、コネクタ２０が接続されている。   Next, as shown in FIG. 3, the terminal 18 is welded to the surface of the negative electrode cup 14 exposed through the opening 32. As a result, the insulating tape 31 is located below the portion where the lead wire 19 in the vicinity of the connection portion between the terminal 18 and the lead wire 19 is not insulated. That is, the insulating tape 31 exists between the lead wire 19 and the side surface of the positive electrode can 12, and even if the lead wire 19 is bent, the lead wire 19 is prevented from coming into contact with the positive electrode can 12 and short circuit is prevented. can do. A terminal 21 (see FIG. 1) connected to the lead wire 22 is welded to the surface of the positive electrode can 12 of the flat battery 11. A connector 20 is connected to the ends of the lead wires 19 and 22.

図３において、矢印で示すように、絶縁テープ３１の巻き終わり端を偏平型電池１１の正極缶１２に対して巻き付ける。この結果が図４に示されている。さらに、絶縁テープ３１が最初に負極カップ１４上に巻き付けられた絶縁テープ３１および端子１８の上に重ねて巻かれる。よりさらに、絶縁テープ３１が正極缶１２の表面に巻かれた絶縁テープ３１の上に重ねて巻かれる。   In FIG. 3, the winding end of the insulating tape 31 is wound around the positive electrode can 12 of the flat battery 11 as indicated by an arrow. The result is shown in FIG. Further, the insulating tape 31 is wound on the insulating tape 31 and the terminal 18 that are first wound on the negative electrode cup 14. Furthermore, the insulating tape 31 is wound on the insulating tape 31 wound around the surface of the positive electrode can 12.

図５は、上述したように、偏平型電池１１の正極缶１２および負極カップ１４のそれぞれの上に２回ずつ絶縁テープ３１が巻かれることによって完成した電池を示す。図５におけるＡ−Ａ’線の断面図が図１である。完成したリード線付きの電池は、例えばノート型パーソナルコンピュータの所定の場所に両面テープ等によって取り付けられる。   FIG. 5 shows a battery completed by winding the insulating tape 31 twice on each of the positive electrode can 12 and the negative electrode cup 14 of the flat battery 11 as described above. FIG. 1 is a cross-sectional view taken along line A-A ′ in FIG. 5. The completed battery with lead wires is attached to a predetermined location of a notebook personal computer, for example, with a double-sided tape or the like.

このように完成した電池の実施例と、図６Ａおよび図６Ｂにそれぞれ示す従来例との比較結果を下記の表１に示す。実施例１は、絶縁テープ３１の巻き付ける回数を最小限の３回としたものである。すなわち、正極側に１回巻き、負極側に２回巻いた例である。また、実施例２は、上述した一実施の形態と同様に、合計４回巻き付ける例である。使用する偏平型電池１１の厚みは、２mmとしている。   Table 1 below shows a comparison result between the battery example thus completed and the conventional example shown in FIGS. 6A and 6B. In Example 1, the number of windings of the insulating tape 31 is set to a minimum of three. That is, it is an example of winding once on the positive electrode side and winding twice on the negative electrode side. In addition, Example 2 is an example of winding a total of four times, as in the above-described embodiment. The thickness of the flat battery 11 used is 2 mm.

Figure 2007073299
Figure 2007073299

実施例１の合計３回巻き付ける例では、電池全体の厚み＝（電池本体の厚み＋端子１８および２１の厚み＋絶縁テープ３１の厚み×２）＝（２mm＋（０．２mm×２＝０．４mm）＋（０．０５５mm×３＝０．１６５mm）＝２．４mm）となる。   In the example of winding a total of 3 times in Example 1, the thickness of the whole battery = (thickness of battery body + thickness of terminals 18 and 21 + thickness of insulating tape 31 × 2) = (2 mm + (0.2 mm × 2 = 0.4 mm) ) + (0.055 mm × 3 = 0.165 mm) = 2.4 mm).

実施例２の合計４回巻き付ける例では、電池全体の厚み＝（電池本体の厚み＋端子１８および２１の厚み＋絶縁テープ３１の厚み×３）＝（２mm＋（０．２mm×２＝０．４mm）＋（０．０５５mm×３＝０．１６５mm）＝２．５６５mm）となる。   In the example in which the total of four turns of Example 2 is used, the thickness of the entire battery = (the thickness of the battery body + the thickness of the terminals 18 and 21 + the thickness of the insulating tape 31 × 3) = (2 mm + (0.2 mm × 2 = 0.4 mm). ) + (0.055 mm × 3 = 0.165 mm) = 2.565 mm).

冒頭で説明したように、図６Ｂに示す従来例の場合は、厚みが２．９０mmとなり、図６Ａに示す従来例の場合は、厚みが３．２０mmとなる。実施例の何れも、厚みを従来例に比して薄くできる。   As described at the beginning, the thickness of the conventional example shown in FIG. 6B is 2.90 mm, and the thickness of the conventional example shown in FIG. 6A is 3.20 mm. In any of the embodiments, the thickness can be reduced as compared with the conventional example.

また、電池そのものの抵抗を表す体積抵抗率、電池性能（ＯＣＶ（開回路電圧）値）、並びに作製に要する時間が表１に示されている。電池性能のＯＣＶ値は、６０°±２°Ｃで３０日間保存後で測定された電圧値であり、２．８Ｖ以上が規格値とされている。体積抵抗率および電池性能の点では、従来例と同程度とすることができる。また、作製工程に要する時間は、３５秒および４０秒と、従来例の２分に比較して大幅に短縮化することができた。   Table 1 shows the volume resistivity representing the resistance of the battery itself, the battery performance (OCV (open circuit voltage) value), and the time required for the production. The OCV value of the battery performance is a voltage value measured after storage for 30 days at 60 ° ± 2 ° C., and the standard value is 2.8V or more. In terms of volume resistivity and battery performance, it can be made comparable to the conventional example. In addition, the time required for the manufacturing process was 35 seconds and 40 seconds, which can be significantly shortened as compared with 2 minutes of the conventional example.

以上、この発明の一実施の形態について具体的に説明したが、この発明は、上述の一実施の形態に限定されるものではなく、この発明の技術的思想に基づく各種の変形が可能である。例えば絶縁テープを巻く回数は、最小限の回数以上であれば、厚みの制約を満たす範囲で所望の回数とすることができる。また、リード線にコネクタが接続されている必要はない。さらに、２個以上の偏平型電池を直列に重ねた状態で絶縁テープで巻くことも可能である。   Although one embodiment of the present invention has been specifically described above, the present invention is not limited to the above-described embodiment, and various modifications based on the technical idea of the present invention are possible. . For example, the number of windings of the insulating tape can be set to a desired number within a range satisfying the thickness constraint as long as the minimum number of times is wound. Further, it is not necessary that a connector is connected to the lead wire. Further, it is possible to wind two or more flat batteries with insulating tape in a state where they are stacked in series.

この発明の一実施の形態の拡大断面図である。It is an expanded sectional view of one embodiment of this invention. この発明の一実施の形態の作製工程において絶縁テープを偏平型電池の負極カップに貼り付けた状態を示す平面図である。It is a top view which shows the state which affixed the insulating tape on the negative electrode cup of the flat battery in the manufacturing process of one embodiment of this invention. この発明の一実施の形態の作製工程において絶縁テープの開口を通じて端子を負極カップに溶接した状態を示す平面図である。It is a top view which shows the state which welded the terminal to the negative electrode cup through opening of the insulating tape in the manufacturing process of one embodiment of this invention. この発明の一実施の形態の作製工程において絶縁テープを正極缶に巻いた状態を示す平面図である。It is a top view which shows the state which wound the insulating tape around the positive electrode can in the manufacturing process of one embodiment of this invention. この発明の一実施の形態の作製されリード線付き電池を示す平面図である。It is a top view which shows the battery with lead wire produced of one Embodiment of this invention. 従来の電池の一例および他の例をそれぞれ示す平面図である。It is a top view which shows an example of the conventional battery, and another example, respectively.

符号の説明Explanation of symbols

１１・・・偏平型電池
１２・・・正極缶
１４・・・負極カップ
１８，２１・・・端子
１９，２２・・・リード線
２０・・・コネクタ
３１・・・絶縁テープ
３２・・・開口
DESCRIPTION OF SYMBOLS 11 ... Flat type battery 12 ... Positive electrode can 14 ... Negative electrode cup 18, 21 ... Terminal 19, 22 ... Lead wire 20 ... Connector 31 ... Insulating tape 32 ... Opening

Claims (3)

缶状の正極と上記正極の開口を覆うように配されたカップ状の負極とが配された偏平型電池と、
上記負極および上記正極のそれぞれと接続された第１および第２の端子と、
上記第１および第２の端子とそれぞれ接続された第１および第２のリード線と、
幅が上記偏平型電池の幅よりやや大とされ、幅方向が上記第１および第２のリード線と交叉する方向で、上記偏平型電池に対して巻かれた絶縁および難燃性の粘着テープとを備え、
上記第１の端子が上記粘着テープに形成された開口を通じて、上記負極に接続され、
上記粘着テープが上記負極上に少なくとも２回巻かれると共に、上記正極上に少なくとも１回巻かれる電池。 A flat battery in which a can-shaped positive electrode and a cup-shaped negative electrode disposed so as to cover the opening of the positive electrode are disposed;
First and second terminals connected to each of the negative electrode and the positive electrode;
First and second lead wires connected to the first and second terminals, respectively;
Insulating and flame-retardant adhesive tape wound around the flat battery in such a way that the width is slightly larger than the width of the flat battery and the width direction intersects the first and second lead wires. And
The first terminal is connected to the negative electrode through an opening formed in the adhesive tape,
A battery in which the adhesive tape is wound at least twice on the negative electrode and at least once on the positive electrode. 上記粘着テープの難燃性が製品の規格を満たすものである電池。   A battery in which the flame retardancy of the adhesive tape satisfies product standards. 上記第１および第２のリード線の端にコネクタが接続された電池。
A battery having a connector connected to ends of the first and second lead wires.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62234864A (en) * 1986-04-03 1987-10-15 Matsushita Electric Ind Co Ltd Cell with terminals
JPH01109172A (en) * 1987-10-21 1989-04-26 Isuzu Motors Ltd Mechanism for controlling steering angle of four-wheel steering vehicle
JPH03138857A (en) * 1989-10-25 1991-06-13 Seiko Electronic Components Ltd Battery
JPH04248249A (en) * 1991-01-23 1992-09-03 Seiko Electronic Components Ltd Coin type organic electrolyte cell and manufacture thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62234864A (en) * 1986-04-03 1987-10-15 Matsushita Electric Ind Co Ltd Cell with terminals
JPH01109172A (en) * 1987-10-21 1989-04-26 Isuzu Motors Ltd Mechanism for controlling steering angle of four-wheel steering vehicle
JPH03138857A (en) * 1989-10-25 1991-06-13 Seiko Electronic Components Ltd Battery
JPH04248249A (en) * 1991-01-23 1992-09-03 Seiko Electronic Components Ltd Coin type organic electrolyte cell and manufacture thereof

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