JPH07211307A - Battery with lead terminal - Google Patents
Battery with lead terminalInfo
- Publication number
- JPH07211307A JPH07211307A JP6013081A JP1308194A JPH07211307A JP H07211307 A JPH07211307 A JP H07211307A JP 6013081 A JP6013081 A JP 6013081A JP 1308194 A JP1308194 A JP 1308194A JP H07211307 A JPH07211307 A JP H07211307A
- Authority
- JP
- Japan
- Prior art keywords
- lead terminal
- battery
- current
- welding
- flat surface
- 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
- 238000003466 welding Methods 0.000 claims abstract description 19
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052744 lithium Inorganic materials 0.000 abstract description 14
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 2
- 230000015654 memory Effects 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は小電流でも強度の高いス
ポット溶接可能なリード端子付電池に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery with a lead terminal capable of spot welding with high strength even with a small current.
【０００２】[0002]
【従来の技術】最近の各種エレクトロニクス機器の普及
により、機器中に組込まれるＩＣメモリ、データカウン
タ、時計回路等の電子回路のメモリーバックアップ用電
源として、基板実装用リード端子付電池が各種にわたり
広く用いられるようになってきている。2. Description of the Related Art Due to the recent widespread use of various electronic devices, various types of batteries with lead terminals for board mounting are widely used as a power source for memory backup of electronic circuits such as IC memories, data counters, and clock circuits incorporated in the devices. Is becoming available.
【０００３】このような基板実装用リード端子付電池は
長期間安定した動作を要求されることから、電池には長
寿命で耐漏液性の高いリチウム電池が用いられ、コイン
型もしくは筒型等のリチウム電池の正負極端子に、夫々
リード端子の一端を接続した構成のものが一般的であ
る。そしてプリント基板に上記リード端子の他端を、夫
々直接ハンダ付けして接続されることが多い。また、電
池の正・負極端子とリード端子とを確実に接続するた
め、リード端子にしぼり面を成形し、電池の両端子面に
直接スポット溶接する方法が採られている。Since such a battery with a lead terminal for mounting on a substrate is required to operate stably for a long period of time, a lithium battery having a long service life and a high leakage resistance is used as the battery, such as a coin type or a cylinder type. In general, one end of each lead terminal is connected to the positive and negative terminals of a lithium battery. In many cases, the other ends of the lead terminals are directly soldered and connected to the printed circuit board. Further, in order to reliably connect the positive and negative electrode terminals of the battery and the lead terminal, a method of forming a narrowed surface on the lead terminal and directly spot welding to both terminal surfaces of the battery is adopted.
【０００４】[0004]
【発明が解決しようとする課題】リード端子を電池端子
面に直接スポット溶接する時、溶接時の熱により電池内
部は極く短時間であるが高温に加熱される。このため、
例えばコイン型リチウム電池のように、金属リチウムの
薄板を負極端子面のすぐ裏側に配する形式の電池では、
加熱により金属リチウムが沸騰状態でセパレーター近く
まで溶融して、セパレーターが損傷したり、溶融リチウ
ムがセパレーターを貫通して、電池が内部短絡するとい
った不都合が起った。When the lead terminal is spot-welded directly to the battery terminal surface, the heat of the welding heats the inside of the battery to a high temperature for a very short time. For this reason,
For example, in the case of a coin-type lithium battery, in which a thin metal lithium plate is placed just behind the negative electrode terminal surface,
Due to heating, metallic lithium was melted in a boiling state up to the vicinity of the separator, and the separator was damaged, or molten lithium penetrated the separator to cause an internal short circuit of the battery.
【０００５】このため、溶接電流を大きくすることが困
難となり、リード端子と負極端子面との溶接強度が上げ
られず、電池に損傷を与えずに負極へのリード端子溶接
を信頼性高く行なうことが困難であった。また、溶接時
の熱によるリチウム、セパレーターの損傷により不良品
が多発し易いといった問題と、スポット溶接時にリード
端子内部を直接流れる無効分流があるので、それだけ溶
接電流を割増しせねばならず、圧こんが大きくなった
り、散りが発生しやすく、電極チップの寿命も短かくな
り、しかも、２点のスポットがシリーズに生成するの
で、溶接強度のばらつきも増大するといった問題があっ
た。Therefore, it becomes difficult to increase the welding current, the welding strength between the lead terminal and the negative electrode terminal surface cannot be increased, and the lead terminal welding to the negative electrode can be performed reliably without damaging the battery. Was difficult. In addition, there is a problem that defective products are likely to occur due to damage of lithium and separator due to heat during welding, and there is an invalid shunt that directly flows inside the lead terminal during spot welding. However, there is a problem in that the dispersion of the welding strength is increased because the spot size of the electrode tip tends to be large and the dust is likely to be scattered, the life of the electrode tip is shortened, and two spots are generated in series.
【０００６】本発明はリード端子の溶接電流を大きくす
ることによる電池の損傷を防止し、小電流で溶接強度の
強い信頼性のあるリード端子付電池を得ることを目的と
する。It is an object of the present invention to prevent a battery from being damaged by increasing a welding current of a lead terminal, and to obtain a reliable battery with a lead terminal having a small current and a high welding strength.
【０００７】[0007]
【課題を解決するための手段】本発明は電池を外部回路
に接続するリード端子付電池において、該リード端子の
電池に接続される部分が、底に平坦面を有する凹状部に
成形され、かつ、平坦面に孔を設け、該孔の両側の位置
をスポット溶接点としたことを特徴とするリード端子付
電池である。本発明のリード端子付電池は、扁平型、円
筒型、角型の電池に用いられ、また、リチウム電池に限
らず、アルカリ電池、マンガン乾電池等の電池全般に応
用することができる。According to the present invention, in a battery with lead terminals for connecting the battery to an external circuit, a portion of the lead terminal connected to the battery is formed into a concave portion having a flat surface on the bottom, and A battery with lead terminals is characterized in that holes are provided on a flat surface and positions on both sides of the holes are spot welding points. INDUSTRIAL APPLICABILITY The battery with lead terminals of the present invention is used for flat type, cylindrical type, and prismatic type batteries, and can be applied not only to lithium batteries but also to all batteries such as alkaline batteries and manganese dry batteries.
【０００８】[0008]
【作用】本発明のリード端子付電子はリード端子の電池
と接触する平坦面に孔を開けることにより、スポット電
流の無効分流を減少させ、その分小電流でスポットでき
るため、電池内部のリチウムが熱により溶解する等がな
くなり、信頼性の高い電池が得られ、かつ高い強度の溶
接ができる。The electron with lead terminal of the present invention reduces the reactive shunt current of the spot current by making a hole in the flat surface of the lead terminal that contacts the battery, and the spot current can be spotted with a small current, so that lithium inside the battery can be removed. Since it is not melted by heat, a highly reliable battery can be obtained and high strength welding can be performed.
【０００９】[0009]
【実施例】本発明のリード端子付電池の実施例を説明す
る。図１はＣＲ２０１６型扁平型リチウム電池１に、ニ
ッケルメッキした鋼板等からなるリード端子２をスポッ
ト溶接したリード端子付電池の一例である。本発明のリ
ード端子２は、リチウム電池１の負極封口板と接触する
部分がしぼり加工されて、底に平坦面を有する凹状部４
に成形されている。また、凹状部４のほぼ中央に平坦部
面積の２０〜４０％の大きさの角形、または平坦面の巾
の９０〜１００％の径の円形の切落し孔５を設けてい
る。この切落し孔５をはさむ両側の２点の位置３にスポ
ット溶接したリード端子付電池である。EXAMPLE An example of the battery with lead terminals of the present invention will be described. FIG. 1 shows an example of a lead terminal battery in which a CR2016 flat lithium battery 1 is spot-welded with a lead terminal 2 made of a nickel-plated steel plate or the like. In the lead terminal 2 of the present invention, the concave portion 4 having a flat surface at the bottom is formed by squeezing the portion of the lead terminal 2 that contacts the negative electrode sealing plate of the lithium battery 1.
Is molded into. Further, a rectangular cutout hole 5 having a size of 20 to 40% of the area of the flat portion, or a circular cutout having a diameter of 90 to 100% of the width of the flat surface is provided substantially at the center of the concave portion 4. A battery with lead terminals is spot-welded at two positions 3 on both sides of the cut-out hole 5.
【００１０】この切落し孔５により、スポット位置３の
間を負荷封口板を介さずリード端子内部を直接流れる電
流である無効分流の通路を切断しているため、無駄にな
る電流を大幅に軽減でき、従来よりも小さい電流でも負
極封口板を介して流れる電流の割合が大きくできるた
め、強い強度の溶接が安定して得られるようになった。Since the cut-off hole 5 cuts the reactive shunt path, which is a current that directly flows inside the lead terminal without passing through the load sealing plate, between the spot positions 3, the wasted current is greatly reduced. Since the ratio of the current flowing through the negative electrode sealing plate can be increased even with a smaller current than before, welding with high strength can be stably obtained.
【００１１】[0011]
【発明の効果】本発明はリード端子のしぼり平坦面に切
落し孔を設けることにより、無効分流が軽減でき、小電
流でも強固に溶接することができる。このため散りの発
生が少なく電極チップの寿命も長くなる。しかも２点に
流れる電流のバラツキが小さくなり、安定した溶接強度
が得られる。According to the present invention, by forming a cutout hole on the flat surface of the lead terminal, it is possible to reduce the reactive shunt and to firmly weld even a small current. As a result, less scattering occurs and the life of the electrode tip is extended. Moreover, variations in the current flowing at the two points are reduced, and stable welding strength can be obtained.
【図１】本発明のリード端子付電池の実施例である扁平
型リチウム電池の斜視図である。FIG. 1 is a perspective view of a flat lithium battery that is an embodiment of a battery with lead terminals according to the present invention.
【図２】本発明の切落し孔を設けたリード端子の斜視図
である。FIG. 2 is a perspective view of a lead terminal provided with a cutout hole according to the present invention.
【図３】本発明の別の形状のリード端子の斜視図であ
る。FIG. 3 is a perspective view of another shape lead terminal of the present invention.
【符号の説明】 １ リチウム電池 ２ リード端子 ３ スポット位置 ５ 切落し孔[Explanation of symbols] 1 lithium battery 2 lead terminal 3 spot position 5 cut-out hole
Claims (1)
電池において、該リード端子の電池に接続される部分
が、 底に平坦面を有する凹状部に成形され、かつ、平坦面に
孔を設け、該孔の両側の位置をスポット溶接点としたこ
とを特徴とするリード端子付電池。1. A battery with lead terminals for connecting a battery to an external circuit, wherein a portion of the lead terminal connected to the battery is formed into a concave portion having a flat surface on the bottom, and a hole is provided in the flat surface. A battery with lead terminals, characterized in that positions on both sides of the hole are spot welding points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6013081A JPH07211307A (en) | 1994-01-12 | 1994-01-12 | Battery with lead terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6013081A JPH07211307A (en) | 1994-01-12 | 1994-01-12 | Battery with lead terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07211307A true JPH07211307A (en) | 1995-08-11 |
Family
ID=11823228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6013081A Pending JPH07211307A (en) | 1994-01-12 | 1994-01-12 | Battery with lead terminal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07211307A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013105141A1 (en) * | 2012-01-13 | 2013-07-18 | トヨタ自動車株式会社 | Battery |
| JPWO2013105141A1 (en) * | 2012-01-13 | 2015-05-11 | トヨタ自動車株式会社 | battery |
-
1994
- 1994-01-12 JP JP6013081A patent/JPH07211307A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013105141A1 (en) * | 2012-01-13 | 2013-07-18 | トヨタ自動車株式会社 | Battery |
| JPWO2013105141A1 (en) * | 2012-01-13 | 2015-05-11 | トヨタ自動車株式会社 | battery |
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