JPH03276560A - Welding method for lead terminal for battery - Google Patents
Welding method for lead terminal for batteryInfo
- Publication number
- JPH03276560A JPH03276560A JP2075520A JP7552090A JPH03276560A JP H03276560 A JPH03276560 A JP H03276560A JP 2075520 A JP2075520 A JP 2075520A JP 7552090 A JP7552090 A JP 7552090A JP H03276560 A JPH03276560 A JP H03276560A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- terminal
- lead terminal
- lead
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims description 21
- 238000003825 pressing Methods 0.000 abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002360 preparation method Methods 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
【発明の詳細な説明】
（産業上の利用分野）
この発明は、プリント基盤などに実装するための接続用
リード端子を電池に溶接する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of welding a connection lead terminal to a battery for mounting on a printed circuit board or the like.
（従来の技術）
リード端子付き電池は、電子回路基盤に実装され、メモ
リーバックアップ用電池としてリード端子を介して回路
部分に接続される。(Prior Art) A battery with a lead terminal is mounted on an electronic circuit board and connected to a circuit part via the lead terminal as a memory backup battery.
この種の電池にリード端子を溶接する方法として各種の
溶接法が提案されているが、例えば、レーザ溶接方法で
は装置が大掛かりで溶接コストが高くなるため、従来で
は抵抗溶接方式が普及している。Various welding methods have been proposed for welding lead terminals to this type of battery, but for example, laser welding requires large equipment and increases welding costs, so resistance welding has traditionally been popular. .
この溶接方法は、電池の電極面にリード端子を載置し、
次いで一対の電極をリード端子の上面に圧接し、両極間
に電流を流すことによって接合部を発熱させてスポット
的に溶接を行う。This welding method places the lead terminal on the electrode surface of the battery.
Next, a pair of electrodes is pressed against the upper surface of the lead terminal, and a current is passed between the two electrodes to generate heat at the joint, thereby performing spot welding.
しかしながら、この方法では、以下に述べる問題があっ
た。However, this method has the following problems.
（発明が解決しようとする課題）
すなわち、この種の電池、例えばリチウム電池では溶接
に伴う発熱により電池内部に対する悪影響が生じやすい
。(Problems to be Solved by the Invention) That is, in this type of battery, for example, a lithium battery, the heat generated during welding tends to have an adverse effect on the inside of the battery.
この熱的影響を抑えるためには溶接電流を極力小さくし
、発熱量が小さくかつ短時間で溶接を完了する必要があ
る。In order to suppress this thermal effect, it is necessary to minimize the welding current, generate less heat, and complete welding in a short time.
しかし溶接電流を小さくし過ぎると逆に溶接不良や溶接
強度が不足する原因となり、実際には個々の製品で溶接
強度のバラツキが大きく、溶接信頼性も低かった。However, if the welding current is too low, it may cause welding defects or insufficient welding strength, and in reality, welding strength varies widely among individual products and welding reliability is low.
なお、小さな電流であっても効果的な溶接を行うために
は、無効電流を小さくする、すなわちリード端子中を流
れる分流を抑えれば良いが、この場合には、電極の押圧
力を大きくしなければならず、変形などの問題を生ずる
。Note that in order to perform effective welding even with a small current, it is sufficient to reduce the reactive current, that is, to suppress the shunt current flowing through the lead terminal, but in this case, the pressing force of the electrode should be increased. This results in problems such as deformation.
この発明方法は以上の問題を解決するものであって、リ
ード板中を流れる分流をなくし、これによって効果的に
溶接を行えるようにした電池用リード端子の溶接方法を
提供することを目的としている。The method of this invention solves the above problems, and aims to provide a method for welding battery lead terminals that eliminates the shunt current flowing through the lead plate and thereby enables effective welding. .
（課題を解決するための手段）
前記目的を達成するため、この発明は、電池ケースの一
部を構成する端子面に抵抗溶接によってリード端子を溶
接する方法であって、前記リード端子にその下面に突出
する突起を形成するとともに、このリード端子を前記端
子面上に位置させた状態で、溶接用電極のうち一方の電
極を前記端子面に押し当て、他方の電極を前記リード端
子上に押し当て、前記端子面と前記リード端子との間に
溶接電流を流すことにより、前記リード端子を前記端子
面に溶接することを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method of welding a lead terminal to a terminal surface that constitutes a part of a battery case by resistance welding, With the lead terminal positioned on the terminal surface, one of the welding electrodes is pressed against the terminal surface, and the other electrode is pressed onto the lead terminal. The lead terminal is welded to the terminal surface by applying a welding current between the terminal surface and the lead terminal.
前記リード端子に、複数の突起と、この突起間に穿設さ
れた透孔とを形成し、前記溶接用電極のうち一方の電極
を前記透孔を介して前記端子面に当接させ、かつ、他方
の電極を前記透孔を中心とした対角線上ににあって、前
記突起の背面側から複数点若しくは環状に当接させて溶
接することもよって効果的に溶接を行えるようにした電
池用リード端子の溶接方法を提供することを目的として
いる。A plurality of protrusions and a through hole formed between the protrusions are formed in the lead terminal, one of the welding electrodes is brought into contact with the terminal surface through the through hole, and , for a battery in which the other electrode is placed on a diagonal line centered on the through hole, and welding can be performed effectively by contacting the protrusion at multiple points or in a ring shape from the back side of the protrusion. The purpose of this invention is to provide a method for welding lead terminals.
（課題を解決するための手段）
前記目的を達成するため、この発明は、電池ケースの一
部を構成する端子面に抵抗溶接によってリード端子を溶
接する方法であって、前記リード端子にその下面に突出
する突起ｐＧ影形成るとともに、このリード端子を前記
端子面上に位置させた状態で、溶接用電極のうち一方の
電極を前記端子面に押し当て、他方の電極を前記リード
端子上に押し当て、前記端子面と前記リード端子との間
に溶接電流を流すことにより、前記リード端子を前記端
子面に溶接することを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method of welding a lead terminal to a terminal surface that constitutes a part of a battery case by resistance welding, While forming a shadow of the protrusion pG projecting on the surface, and with this lead terminal positioned on the terminal surface, one of the welding electrodes is pressed against the terminal surface, and the other electrode is pressed onto the lead terminal. The lead terminal is welded to the terminal surface by pressing and flowing a welding current between the terminal surface and the lead terminal.
前記リード端子に、複数の突起と、この突起間に穿設さ
れた透孔とを形成し、前記溶接用電極のうち一方の電極
を前記透孔を介して前記端子面に当接させ、かつ、他方
の電極を前記透孔を中心とした対角線上ににあって、前
記突起の背面側から複数点若しくは環状に当接させて溶
接することもできる。A plurality of protrusions and a through hole formed between the protrusions are formed in the lead terminal, one of the welding electrodes is brought into contact with the terminal surface through the through hole, and Welding can also be carried out by placing the other electrode on a diagonal line centered on the through hole and abutting the protrusion at a plurality of points or in an annular shape from the rear side.
（作 用）
以上の構成によれば、電極間を流れる溶接電流は、端子
面とリード端子間のみとなり、無効電流を生ずることな
く最も抵抗の高い接合部の箇所で発熱し、これを溶接す
ることができる。(Function) According to the above configuration, the welding current that flows between the electrodes only flows between the terminal surface and the lead terminal, and heat is generated at the joint with the highest resistance without generating reactive current, which welds. be able to.
また、リード端子が端子面に当接する接触箇所に突起が
設けられているので、この部分に電流が集中する。Further, since the protrusion is provided at the contact point where the lead terminal comes into contact with the terminal surface, the current is concentrated at this portion.
（実 施 例）
以下、この発明の実施例を図面を用いて詳細に説明する
。(Example) Hereinafter, an example of the present invention will be described in detail using the drawings.
第１図はこの発明方法の第一実施例を示している。FIG. 1 shows a first embodiment of the method of the invention.
図において、１は電池構成するステンレス薄板製の正極
缶、２は正極缶１の端子面１ａに溶接されるリード端子
である。In the figure, 1 is a positive electrode can made of thin stainless steel plate constituting a battery, and 2 is a lead terminal welded to the terminal surface 1a of the positive electrode can 1.
リード端子２は同じくステンレス薄板の表面にニッケル
メッキを施したもので、端子面１ａに対向する部分には
プレス打抜きなどにより溶接用の透孔２ａが穿設されて
いるとともに、透孔２ａを中心としてその両側に一対の
突起２ｂが、ポンチング加工などにより形成されている
。The lead terminal 2 is also made of a thin stainless steel plate with nickel plating applied to the surface, and a through hole 2a for welding is formed by press punching etc. in the part facing the terminal surface 1a, and a hole 2a is formed at the center of the through hole 2a. A pair of protrusions 2b are formed on both sides thereof by punching or the like.
このように構成されたリード端子２は、以下の手順で溶
接がなされる。The lead terminal 2 configured in this manner is welded in the following procedure.
すなわち、前記透孔２ａが端子面１ａ上に位置するよう
にリード端子２を端子面ｌａ上に位置決め載置し、抵抗
溶接用の電極３，４のうちプラス電極３を前記透孔２ａ
を通じて端子面１ａの表面に当接させる。That is, the lead terminal 2 is positioned and placed on the terminal surface la so that the through hole 2a is located on the terminal surface 1a, and the positive electrode 3 of the resistance welding electrodes 3 and 4 is placed on the through hole 2a.
The terminal is brought into contact with the surface of the terminal surface 1a through the terminal.
なお、このとき、プラス電極３の径は、前記透孔２ａよ
り十分に小さく、プラス電極３はリード端子２に対して
電気的に非接触状態となるようにする。At this time, the diameter of the positive electrode 3 is made sufficiently smaller than the through hole 2a, so that the positive electrode 3 is not in electrical contact with the lead terminal 2.
そして、一対のマイナス電極４を、透孔２ａ。Then, a pair of negative electrodes 4 are inserted into the through hole 2a.
すなわち、プラス電極３を中心にして、その対角線上に
あって、前記突起２ｂの背部からリード端子２に当接す
るように設置する。That is, it is placed on a diagonal line with the positive electrode 3 in the center, and is placed in contact with the lead terminal 2 from the back of the protrusion 2b.
次いで、画電極３，４間に正負の溶接電流を通電すると
、電流は矢印のごとく端子面１ａの電極当接面からリー
ド端子２の電極当接面まで矢印のごとく流れ、リード端
子２との接触部で発熱し、溶接が行われる。Next, when a positive and negative welding current is applied between the picture electrodes 3 and 4, the current flows as shown by the arrow from the electrode contact surface of the terminal surface 1a to the electrode contact surface of the lead terminal 2, and the current flows as shown by the arrow. Heat is generated at the contact area and welding occurs.
図中符号５は、溶接部分に形成されたナゲツトであり、
従来のように無効電流となるリード端子２の内部を流れ
る分流がないため、比較的少ない溶接電流および溶接時
間で十分良好なナゲツト５が形成されることになる。Reference numeral 5 in the figure is a nugget formed in the welded part,
Since there is no branch current flowing inside the lead terminal 2 which becomes a reactive current as in the prior art, a sufficiently good nugget 5 can be formed with a relatively small welding current and welding time.
このような溶接方法では、各突起２ｂと端子面１ａとの
接触面積が小さいため、この部分の抵抗が大きくなり、
突起２ｂと端子面１ａとの接触部分に電流が集中し、さ
らに確実な溶接を行うことができる。In such a welding method, since the contact area between each protrusion 2b and the terminal surface 1a is small, the resistance of this part increases,
Current is concentrated at the contact portion between the protrusion 2b and the terminal surface 1a, making it possible to perform more reliable welding.
以下の表は従来の画電極をリード端子上に″押し当てた
溶接方法と、前記実施例による溶接方法とを実施したサ
ンプル２０ケについて、引き剥がし強度およびバラツキ
（Ｉ準備差）とを調査した結果を示すものである。The table below shows the peel strength and variation (I preparation difference) of 20 samples that were performed using the conventional welding method in which the picture electrode was pressed onto the lead terminal and the welding method according to the above example. This shows the results.
なお、正極缶の材質はステンレスで厚さ０．２’）＋ｕ
ｓ、 リード端子はステンレスの両面にニッケルメッ
キを施した厚さ０．２ａ鳳のものを用いた。The material of the positive electrode can is stainless steel with a thickness of 0.2')+u
s. The lead terminals were made of stainless steel with a thickness of 0.2 mm and nickel plated on both sides.
また、溶接に用いた電極３，４の径は２１Ｉ１１．前記
実施例における透孔２ａの径は３ｍｍ、突起２ｂの径は
１．０ｍｍ程度とした。Moreover, the diameter of the electrodes 3 and 4 used for welding is 21I11. In the embodiment described above, the diameter of the through hole 2a was about 3 mm, and the diameter of the protrusion 2b was about 1.0 mm.
表
この表からも明らかなように、この発明方法を実施した
場合には、リード端子の溶接強度は増し、不良数を減少
させることができる。また、第二実施例のように突起を
設けることでさらに強度が増加し、バラツキも減少する
ことも確認された。Table As is clear from this table, when the method of the present invention is implemented, the welding strength of the lead terminals can be increased and the number of defects can be reduced. It was also confirmed that by providing protrusions as in the second example, the strength was further increased and the variation was reduced.
なお、上記実施例ではマイナス電極４を一対の棒状のも
ので構成した場合を示したが、マイナス電極４はこれら
を一体化させた環状のものであってもよい。In the above embodiment, the negative electrode 4 is constituted by a pair of bar-shaped members, but the negative electrode 4 may be annular in which these are integrated.
また、上記実施例ではプラス電極３を透孔２ａを介して
端子面１ａに当接させるようにしたが、これを直接端子
面１ａに接触させてもよい。Further, in the above embodiment, the positive electrode 3 is brought into contact with the terminal surface 1a through the through hole 2a, but it may be brought into direct contact with the terminal surface 1a.
（発明の効果）
以上各実施例によって詳細に説明したように、この発明
によるリード端子付き電池のリード端子溶接方法にあっ
ては、電極間を流れる電流は端子面とリード端子間のみ
を流れ、無効電流を生ずることなく最も抵抗の高い接合
部の箇所で発熱し、これを溶接するので、従来に比べて
確実な溶接ができ、溶接強度のバラツキが小さく、長期
信頼性も向上する。(Effects of the Invention) As described above in detail through each embodiment, in the lead terminal welding method for a battery with lead terminals according to the present invention, the current flowing between the electrodes flows only between the terminal surface and the lead terminal, Since heat is generated at the joint with the highest resistance and welded without generating reactive current, welding is more reliable than conventional methods, with less variation in welding strength and improved long-term reliability.
また、リード端子の端子面に対する接触箇所に突起を設
けているので、この部分に電流が集中するため、さらに
効果的な溶接を行うことができる。Furthermore, since the protrusion is provided at the contact point of the lead terminal with respect to the terminal surface, the current is concentrated in this portion, so that more effective welding can be performed.
第１図はこの発明の一実施例による溶接方法を示す説明
図である。
１・・・正極缶 １ａ・・・端子面２・・・リ
ード端子 ２ａ・・・透孔２ｂ・・・突起
３゜
４・・・電極
５・・・ナゲツ
ト
（溶接部分）FIG. 1 is an explanatory diagram showing a welding method according to an embodiment of the present invention. 1...Positive electrode can 1a...Terminal surface 2...Lead terminal 2a...Through hole 2b...Protrusion 3° 4...Electrode 5...Nugget (welded part)
Claims (2)
よってリード端子を溶接する方法であって、前記リード
端子にその下面に突出する突起を形成するとともに、こ
のリード端子を前記端子面上に位置させた状態で、溶接
用電極のうち一方の電極を前記端子面に押し当て、他方
の電極を前記リード端子上に押し当て、前記端子面と前
記リード端子との間に溶接電流を流すことにより、前記
リード端子を前記端子面に溶接することを特徴とする電
池用リード端子の溶接方法。(1) A method of welding a lead terminal by resistance welding to a terminal surface constituting a part of a battery case, in which a protrusion protruding from the lower surface of the lead terminal is formed, and the lead terminal is welded onto the terminal surface. , one of the welding electrodes is pressed against the terminal surface, the other electrode is pressed onto the lead terminal, and welding current is passed between the terminal surface and the lead terminal. A method of welding a lead terminal for a battery, characterized in that the lead terminal is welded to the terminal surface.
穿設された透孔とを有し、前記溶接用電極のうち一方の
電極を前記透孔を介して前記端子面に当接させ、かつ、
他方の電極を前記透孔を中心とした対角線上ににあって
、前記突起の背面側から複数点若しくは環状に当接させ
て溶接することを特徴とする請求項１記載の電池用リー
ド端子の溶接方法。(2) The lead terminal has a plurality of protrusions and a through hole bored between the protrusions, and one of the welding electrodes is brought into contact with the terminal surface through the through hole. Let, and
2. The battery lead terminal according to claim 1, wherein the other electrode is disposed on a diagonal line centered on the through hole and is welded by abutting the protrusion at a plurality of points or in an annular shape from the back side of the protrusion. Welding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2075520A JPH03276560A (en) | 1990-03-27 | 1990-03-27 | Welding method for lead terminal for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2075520A JPH03276560A (en) | 1990-03-27 | 1990-03-27 | Welding method for lead terminal for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03276560A true JPH03276560A (en) | 1991-12-06 |
Family
ID=13578591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2075520A Pending JPH03276560A (en) | 1990-03-27 | 1990-03-27 | Welding method for lead terminal for battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03276560A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08171896A (en) * | 1994-12-16 | 1996-07-02 | Matsushita Electric Ind Co Ltd | Manufacture of pack battery |
| JP2007184248A (en) * | 2005-12-29 | 2007-07-19 | Samsung Sdi Co Ltd | Secondary battery |
-
1990
- 1990-03-27 JP JP2075520A patent/JPH03276560A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08171896A (en) * | 1994-12-16 | 1996-07-02 | Matsushita Electric Ind Co Ltd | Manufacture of pack battery |
| JP2007184248A (en) * | 2005-12-29 | 2007-07-19 | Samsung Sdi Co Ltd | Secondary battery |
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