JP4201301B2 - Sealed battery - Google Patents

Sealed battery Download PDF

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Publication number
JP4201301B2
JP4201301B2 JP2000014381A JP2000014381A JP4201301B2 JP 4201301 B2 JP4201301 B2 JP 4201301B2 JP 2000014381 A JP2000014381 A JP 2000014381A JP 2000014381 A JP2000014381 A JP 2000014381A JP 4201301 B2 JP4201301 B2 JP 4201301B2
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JP
Japan
Prior art keywords
battery
electrode lead
plate
out pin
insulating plate
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JP2000014381A
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Japanese (ja)
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JP2001210284A (en
Inventor
裕明 道家
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Tokin Corp
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NEC Tokin Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Description

【0001】
【発明の属する技術分野】
本発明は、密閉型電池に関し、電池缶と異種の極性の電極導出ピンの気密構造に特徴を有する電池ヘッダーを有する密閉型電池に関する。
【0002】
【従来の技術】
小型の電子機器の電源として各種の電池が用いられており、携帯電話、ノートパソコン、カムコーダ等の電源として、小型で大容量の密閉型電池が用いられており、高容量のリチウム電池やリチウムイオン二次電池等の非水電解液電池が用いられている。
機器の小型化に対応して、円筒型電池に加えて、小さな空間を有効に利用することができる角型の密閉式電池がひろく用いられている。角型電池においては、電池の一方の電極として作用する電池缶と絶縁性部材によって隔離した電極端子が取り付けられている。
【0003】
従来の密閉型電池の一例を図面を参照して説明する。
図2は、角型の密閉型電池の一例を説明する図であり、とくにアルミニウム等の電池缶が正極側の密閉型電池を説明する図である。
アルミニウムまたはその合金からなる角筒状の金属容器1(以下、電池缶とも称す)に、正極と負極をセパレータを介して積層したものを巻回した電池素子が収納されており、電池缶1の上端2には、金属板3に設けた凹部3Aに電極導出ピン4を外部絶縁板6Aを介して取り付けて構成した電池ヘッダー5を電池缶の開口部に取り付けている。電池ヘッダー5の一部には、電池の内部圧力の異常な上昇時に圧力を開放するために他の部分よりも肉厚が薄い薄肉部8、電解液を注液し、電解液の注液後に封口する小孔からなる注液口9が設けられており、注液口9から電解液を注入し、金属板と同一の材料からなる金属部材を埋め込み、溶接して封口している。
【0004】
図3は、電池ヘッダーを説明する図であり、図3(A)は、組立後の電池ヘッダーを説明する断面図であり、図3(B)は、組み立て前のかしめ工程を説明する断面図である。
図3(A)に示すように、金属板3に設けた円形の開口部に、外部絶縁板6Aおよび内部絶縁板6Bをそれぞれ上下から装着した後に、電極導出ピン4を外部絶縁板側より装着する。電極導出ピン4は、円柱状部4Aとつば部4Bから構成されている。電極導出ピン4は、上下からかしめて絶縁板、電池ヘッダーの金属板および電極導出ピンのそれぞれの間の気密性を保持するとともに電極導出ピンを固定している。
【0005】
図3(B)は、かしめ治具10によるかしめ工程を説明する図であり、図3(A)とは逆に、外部すなわち電池の上部に位置する側を下側にして製造されている。
金属板の凹部3Aに外部絶縁板6Aを取り付けるとともに、反対側から内部絶縁板6Bを取り付けた後に、電極導出ピン4を外部絶縁板6Aの貫通孔内に挿入し、押さえ板7を装着して、かしめ治具10によってかしめることによって固着される。
電極導出ピンをかしめると図3(A)に示すように、電極導出ピン4の円柱状部4Aが膨らんで外部絶縁板6Aおよび内部絶縁板6Bに密着し密閉される。電極導出ピンは、円柱状部が充分に内部絶縁板および外部絶縁板と密着するように軟鋼、鉄合金、ステンレス、ニッケル合金等で形成され、円柱状部は中空で先端が開口した管状体としている。
電極導出ピン4の円柱状部をかしめると、図3(A)に示すように、電極導出ピンの円柱状部の先端部11は押さえ板の角部およびその表面と接触することによって円柱状部の先端が固定されている。
【0006】
ところが、図3(C)に押さえ板7を示すように、押さえ板は、中央部に貫通孔を有するのみの板状体であるために、電極導出ピンと押さえ板との接触部は一定しない。すなわち、図3(A)に示すように、電極導出ピン4のかしめによって折り曲げられた先端部11のカール径aは、かしめ治具による押圧力、かしめ治具の電極導出ピンとの接触状態、押さえ板の表面状態、外部絶縁板6Aおよび内部絶縁板6Bの厚み等によって変化をすることとなる。
電極導出ピン4の折り曲げられた先端部11のカール径aが変化すると、電極導出ピンの円柱状部4Aの膨らみ径bが変化し、電極導出ピンと外部絶縁板6Aおよび内部絶縁板6Bとの間の気密性が低下し、電解液の漏洩、電解液の吸湿等の問題が生じることがあった。
【0007】
【発明が解決しようとする課題】
本発明は、電極導出ピンをかしめて固着した電極封止構造を有する電池において、電極導出ピンをかしめた場合に、絶縁性、気密性に優れ、信頼性の高い密閉型電池を提供することを課題とするものである。
【0008】
【課題を解決するための手段】
本発明は、電池缶に設けた開孔部に内部に貫通孔を有する絶縁性部材を介在させて、該貫通孔に電極導出ピンを挿入してかしめて固着した電池ヘッダーを設けた密閉型電池において、電極導出ピンのかしめによって折れ曲がった電極導出ピンの先端部は、絶縁性部材に接して設けた金属製の押さえ板に形成した段差部において係止された密閉型電池である。
また、段差部が貫通孔の周囲に設けた溝である前記の密閉型電池である。
電池缶がアルミニウムまたはその合金からなり、電極導出ピンが電池素子の負極集電体と導電接続する前記の密閉型電池である。
電極導出ピンがつば部と円柱状部から構成されているとともに、円柱状部は円端が開口した中空管状の部材から構成された前記の密閉型電池である。
リチウムイオン二次電池である前記の密閉型電池である。
【0009】
【発明の実施の形態】
本発明の密閉型電池は、電極導出ピンをかしめて電池缶内部の電池素子の一方の電極を外部へ導出する電池ヘッダーを設けた密閉型電池において、電極導出ピンと絶縁性部材との間からの電解液の漏洩等の密閉不良が生じる原因を鋭意検討した結果、これらの問題が、電極導出ピンと電極導出ピンの周囲の絶縁性部材との間の密閉不良に起因するものであり、電極導出ピンのかしめの際に電極導出ピンの変形が不均一となることを見いだしたものである。
【0010】
以下に、図面を参照して本発明を説明する。
図1は、本発明の密閉型電池の電池ヘッダー部を説明する図であり、図1(A)は、電池ヘッダー部の構成部品を説明する分解斜視図であり、図1(B)は、電池ヘッダー部の断面図である。
電池缶の開口部に取り付ける電池ヘッダーを構成する金属板3に形成した凹部3Aに設けた貫通孔部に外部絶縁板6Aおよび内部絶縁板6Bを両面から取り付け、外部絶縁板6A側より電極導出ピン4を挿入してかしめたものである。電極導出ピン4は円柱状部4Aとつば部4Bから構成されており、円柱状部4Aは先端が開口した中空体の管状体から形成されている。内部絶縁板6B上に接して中央部に貫通孔を有する押さえ板7が配置されており、押さえ板7の貫通孔の周囲には、他の部分よりも低くなった段差部12が形成されている。
【0011】
電極導出ピン4がかしめによって曲げられると電極導出ピン4の先端部11は押さえ板7の段差部12の壁面によって係止される。押さえ板7の段差部12は貫通孔の周囲に均等に設けられているので電極導出ピン4の先端部は、周囲に均等に延びて係止される。
したがって、かしめの際にかしめ治具の摩耗、あるいは各部材の装着の多少の違い等によってかしめ治具と電極導出ピンとの接触状態に変化が生じた場合、あるいはかしめ圧力に多少の相違が生じた場合であっても、電極導出ピンの先端部11は常に押さえ板7に形成した段差部12によって常に一定の位置で係止されるので、電極導出ピンの円柱状部の膨らみ径bも一定となる。
その結果、電池ヘッダーの金属板、外部絶縁板、内部絶縁板、および電極導出ピンの相互の密着力が個々の電池によらずに安定したものとなるので、電解液の漏洩等が生じることを防止することができる。
【0012】
以上の説明では、図1(B)において、電池ヘッダーの金属板3の電池内部側にも凹部を設けて内部絶縁板6Bを形成して凹部によって係止される図を示したが、凹部を設けなくても充分な位置出しが可能であり、同様に気密特性の高い電池を得ることができる。
【0013】
本発明において、外部絶縁板および内部絶縁板には、ポリプロピレン、あるいはテトラフルオロエチレン−パーフルオロアルコキシエチレン共重合体(PFA)、テトラフルオロエチレン−ヘキサフルオロプロピレン共重合体(FEP)等の熱可塑性フッ素樹脂等を用いることができる。
外部絶縁板6Aの板状部6A1と、電極導出ピンの柱状部4Bを被覆する外部絶縁板6Aの筒状部6A2は一体に構成されていることが好ましい。
以上の説明においては、外部絶縁板6Aと内部絶縁板6Bを別体に構成する例について述べたが、外部絶縁板6Aと内部絶縁板6Bとを金属板3に一体に成形しても良い。
【0014】
また、押さえ板は、ニッケル板、ニッケルめっきを施した鉄板、ステンレス板等を用いることができる。とくにこれらのなかでも、ニッケル板は硬度が大きく、かしめの際の変形量が小さいので、固着特性が良好なものとなる。
電極導出ピンは、軟鋼、ステンレス、ニッケル合金からなるものを用いることができる。
【0015】
【実施例】
以下に実施例を示し本発明を説明する。
実施例1
厚さ1mmのアルミニウム板を用いた電池ヘッダーにおいて、テトラフルオロエチレン−パーフルオロアルコキシエチレン共重合体製の厚さ0.4mm、筒状部の内径2.0mmの外部絶縁板に接して、中央部に内径2.1mmの貫通孔を形成し、貫通孔の中央部から内径2.6mmの部分を深さ0.1mmまで円周状に切削した、縦3.2mm、横3.2mm、厚さ0.50mmのステンレス(SUS304)製の押さえ板を配置した。次いで、円柱状部の外径が1.8mm、円柱状部の先端が開口した管状体で形成された軟鋼製の電極導出ピンを挿入してかしめた。電極導出ピンの先端部は、押さえ板の段差部に係止されて、電極導出ピンの円柱状部は外径2.2mm〜2.3mmの大きさに膨らみ、外部絶縁板の円柱状部に密着して気密を保持することができた。得られた電池ヘッダーを用いた密封型電池の気密不良は0.5%以下であった。
【0016】
比較例1
押さえ板に深さ0.1mmの段差部を形成しない点を除いて、実施例1と同様にして電極導出ピンをかしめた場合には、電極導出ピンの先端部は、押さえ板の面によって係止されるのみであり、係止部のばらつきが生じるとともに、円柱状部は外径2.0mm〜2.2mmの大きさに膨らむのみであった。外部絶縁板の円柱状部に密着性は低下し、得られた電池ヘッダーで作製した密閉型電池の気密不良は2%であった。
【0017】
【発明の効果】
本発明の密閉型電池は、電極導出ピンのかしめの際にかしめによって変形した電極導出ピンの先端部を係止する押さえ板を絶縁板に接して設けたので、かしめの際の電極導出ピンの円柱状部の変形量が大きくしかも均一化したので絶縁板との密着性が向上し、気密性が向上した密閉型電池を得ることができる。
【図面の簡単な説明】
【図1】図1は、本発明の密閉型電池の電池ヘッダー部を説明する図である。
【図2】図2は、角型の密閉型電池の一例を説明する図である。
【図3】図3は、電池ヘッダーを説明する図である。
【符号の説明】
1…金属容器、電池缶、2…上端、3…金属板、3A…凹部、4…電極導出ピン、4A…円柱状部、4B…つば部、5…電池ヘッダー、6A…外部絶縁板、6A1…板状部、6A2…筒状部、6B…内部絶縁板、7…押さえ板、8…薄肉部、9…注液口、10…かしめ治具、11…先端部、12…段差部、a…カール径、b…膨らみ径
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealed battery, and more particularly to a sealed battery having a battery header characterized by an airtight structure of electrode lead-out pins having different polarities from a battery can.
[0002]
[Prior art]
Various types of batteries are used as power sources for small electronic devices, and small and large-capacity sealed batteries are used as power sources for mobile phones, notebook computers, camcorders, etc. Nonaqueous electrolyte batteries such as secondary batteries are used.
In response to the miniaturization of equipment, in addition to cylindrical batteries, square sealed batteries that can effectively use a small space are widely used. In a square battery, a battery can that acts as one electrode of a battery and an electrode terminal that is isolated by an insulating member are attached.
[0003]
An example of a conventional sealed battery will be described with reference to the drawings.
FIG. 2 is a diagram for explaining an example of a rectangular sealed battery, and in particular, a diagram for explaining a sealed battery in which a battery can such as aluminum is on the positive electrode side.
A battery element in which a positive electrode and a negative electrode are laminated via a separator is housed in a rectangular tube-shaped metal container 1 (hereinafter also referred to as a battery can) made of aluminum or an alloy thereof. On the upper end 2, a battery header 5 constituted by attaching an electrode lead pin 4 to a recess 3 </ b> A provided on the metal plate 3 via an external insulating plate 6 </ b> A is attached to the opening of the battery can. In part of the battery header 5, in order to release the pressure when the internal pressure of the battery rises abnormally, a thin part 8 that is thinner than the other part, an electrolyte is injected, and after the electrolyte is injected A liquid injection port 9 composed of a small hole for sealing is provided, and an electrolytic solution is injected from the liquid injection port 9, and a metal member made of the same material as that of the metal plate is embedded, welded and sealed.
[0004]
FIG. 3 is a diagram for explaining the battery header, FIG. 3 (A) is a sectional view for explaining the assembled battery header, and FIG. 3 (B) is a sectional view for explaining the caulking process before assembling. It is.
As shown in FIG. 3 (A), after attaching the external insulating plate 6A and the internal insulating plate 6B from above and below to the circular openings provided in the metal plate 3, the electrode lead pins 4 are mounted from the external insulating plate side. To do. The electrode lead-out pin 4 is composed of a cylindrical portion 4A and a collar portion 4B. The electrode lead-out pin 4 is caulked from above and below to maintain airtightness between the insulating plate, the metal plate of the battery header, and the electrode lead-out pin, and fixes the electrode lead-out pin.
[0005]
FIG. 3B is a diagram for explaining the caulking process by the caulking jig 10, and is manufactured with the outside, that is, the side located at the upper part of the battery facing down, as opposed to FIG. 3A.
After attaching the external insulating plate 6A to the recess 3A of the metal plate and attaching the internal insulating plate 6B from the opposite side, the electrode lead-out pin 4 is inserted into the through hole of the external insulating plate 6A, and the holding plate 7 is attached. It is fixed by caulking with the caulking jig 10.
When the electrode lead-out pin is caulked, as shown in FIG. 3A, the columnar portion 4A of the electrode lead-out pin 4 swells and comes into close contact with the outer insulating plate 6A and the inner insulating plate 6B and is sealed. The electrode lead-out pin is formed of mild steel, iron alloy, stainless steel, nickel alloy or the like so that the cylindrical portion is in close contact with the inner insulating plate and the outer insulating plate, and the cylindrical portion is a hollow tubular body having an open end. Yes.
When the cylindrical portion of the electrode lead-out pin 4 is caulked, as shown in FIG. 3A, the tip end portion 11 of the cylindrical portion of the electrode lead-out pin comes into contact with the corner portion of the holding plate and the surface thereof, thereby forming a cylindrical shape. The tip of the part is fixed.
[0006]
However, as shown in FIG. 3C, the pressing plate 7 is a plate-like body having only a through hole in the central portion, and therefore the contact portion between the electrode lead-out pin and the pressing plate is not constant. That is, as shown in FIG. 3A, the curl diameter a of the tip 11 bent by caulking of the electrode lead-out pin 4 is determined by the pressing force by the caulking jig, the contact state of the caulking jig with the electrode lead-out pin, It changes depending on the surface state of the plate, the thickness of the external insulating plate 6A and the internal insulating plate 6B, and the like.
When the curled diameter a of the bent tip portion 11 of the electrode lead-out pin 4 changes, the bulge diameter b of the columnar portion 4A of the electrode lead-out pin changes, and between the electrode lead-out pin and the external insulating plate 6A and the internal insulating plate 6B. In some cases, the airtightness of the electrolyte decreases, causing problems such as leakage of the electrolyte and moisture absorption of the electrolyte.
[0007]
[Problems to be solved by the invention]
The present invention provides a battery having an electrode sealing structure in which an electrode lead-out pin is caulked and fixed, and when the electrode lead-out pin is caulked, provides a highly reliable sealed battery with excellent insulation and airtightness. It is to be an issue.
[0008]
[Means for Solving the Problems]
The present invention relates to a sealed battery having a battery header in which an insulating member having a through hole is interposed in an opening provided in a battery can and an electrode lead-out pin is inserted into the through hole and fixed by caulking. The tip of the electrode lead-out pin bent by caulking of the electrode lead-out pin is a sealed battery that is locked at a step portion formed on a metal pressing plate provided in contact with the insulating member.
Further, in the above sealed battery, the step portion is a groove provided around the through hole.
In the sealed battery, the battery can is made of aluminum or an alloy thereof, and the electrode lead-out pin is conductively connected to the negative electrode current collector of the battery element.
The electrode lead-out pin is composed of a collar part and a cylindrical part, and the cylindrical part is the above-mentioned sealed battery composed of a hollow tubular member having an open circular end.
It is the said sealed battery which is a lithium ion secondary battery.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The sealed battery of the present invention is a sealed battery provided with a battery header that leads the outside of one electrode of the battery element inside the battery can by caulking the electrode lead pin, and is between the electrode lead pin and the insulating member. As a result of earnest examination of the cause of the sealing failure such as leakage of the electrolyte, these problems are caused by the sealing failure between the electrode lead pin and the insulating member around the electrode lead pin. It has been found that the deformation of the electrode lead-out pin becomes non-uniform during the caulking.
[0010]
The present invention will be described below with reference to the drawings.
FIG. 1 is a diagram illustrating a battery header portion of a sealed battery according to the present invention, FIG. 1 (A) is an exploded perspective view illustrating components of the battery header portion, and FIG. It is sectional drawing of a battery header part.
An external insulating plate 6A and an internal insulating plate 6B are attached from both sides to a through hole provided in a recess 3A formed in a metal plate 3 constituting a battery header to be attached to an opening of a battery can, and an electrode lead-out pin is provided from the external insulating plate 6A side. 4 is inserted and crimped. The electrode lead-out pin 4 is composed of a cylindrical portion 4A and a collar portion 4B, and the cylindrical portion 4A is formed of a hollow tubular body having an open end. A pressing plate 7 having a through hole at the center is disposed in contact with the inner insulating plate 6B, and a step 12 that is lower than other portions is formed around the through hole of the pressing plate 7. Yes.
[0011]
When the electrode lead-out pin 4 is bent by caulking, the tip portion 11 of the electrode lead-out pin 4 is locked by the wall surface of the step portion 12 of the pressing plate 7. Since the stepped portion 12 of the pressing plate 7 is provided uniformly around the through hole, the tip end portion of the electrode lead-out pin 4 extends evenly and is locked.
Therefore, when the caulking jig is worn, or when the contact state between the caulking jig and the electrode lead-out pin changes due to the wear of the caulking jig or the difference in mounting of each member, the caulking pressure slightly varies. Even in this case, since the tip portion 11 of the electrode lead-out pin is always locked at a constant position by the step portion 12 formed on the holding plate 7, the bulge diameter b of the cylindrical portion of the electrode lead-out pin is also constant. Become.
As a result, the mutual adhesion of the battery header metal plate, external insulation plate, internal insulation plate, and electrode lead-out pin becomes stable regardless of the individual battery, so that leakage of electrolyte etc. occurs. Can be prevented.
[0012]
In the above description, in FIG. 1 (B), the concave portion is also provided on the battery inner side of the metal plate 3 of the battery header to form the internal insulating plate 6B and locked by the concave portion. Even if it is not provided, sufficient positioning can be achieved, and a battery with high airtightness can be obtained.
[0013]
In the present invention, thermoplastic fluorine such as polypropylene, tetrafluoroethylene-perfluoroalkoxyethylene copolymer (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP) or the like is used for the outer insulating plate and the inner insulating plate. Resin or the like can be used.
It is preferable that the plate-like portion 6A1 of the external insulating plate 6A and the cylindrical portion 6A2 of the external insulating plate 6A that covers the columnar portion 4B of the electrode lead-out pin are integrally formed.
In the above description, an example in which the external insulating plate 6A and the internal insulating plate 6B are configured separately has been described. However, the external insulating plate 6A and the internal insulating plate 6B may be integrally formed with the metal plate 3.
[0014]
Moreover, a nickel plate, a nickel-plated iron plate, a stainless steel plate, etc. can be used for the pressing plate. Among these, in particular, the nickel plate has a high hardness and a small amount of deformation at the time of caulking, so that the fixing property is good.
As the electrode lead-out pin, one made of mild steel, stainless steel, or nickel alloy can be used.
[0015]
【Example】
The following examples illustrate the invention.
Example 1
In a battery header using an aluminum plate having a thickness of 1 mm, a central portion is brought into contact with an outer insulating plate having a thickness of 0.4 mm and an inner diameter of 2.0 mm made of a tetrafluoroethylene-perfluoroalkoxyethylene copolymer. A through hole with an inner diameter of 2.1 mm was formed on the inner surface, and a portion with an inner diameter of 2.6 mm was cut from the center of the through hole to a depth of 0.1 mm in a circumferential shape, 3.2 mm in length, 3.2 mm in width, thickness A holding plate made of 0.50 mm stainless steel (SUS304) was arranged. Next, an electrode lead-out pin made of mild steel formed of a tubular body having an outer diameter of the columnar portion of 1.8 mm and an opening at the end of the columnar portion was inserted and caulked. The tip part of the electrode lead-out pin is locked to the step part of the holding plate, and the columnar part of the electrode lead-out pin swells to a size of an outer diameter of 2.2 mm to 2.3 mm, and the columnar part of the external insulating plate It was able to keep tight and airtight. The hermetic failure of the sealed battery using the obtained battery header was 0.5% or less.
[0016]
Comparative Example 1
When the electrode lead-out pin is caulked in the same manner as in Example 1 except that a step portion having a depth of 0.1 mm is not formed on the press plate, the tip of the electrode lead-out pin is engaged by the surface of the press plate. It was only stopped, the variation of the locking part occurred, and the columnar part only swelled to an outer diameter of 2.0 mm to 2.2 mm. The adhesion to the cylindrical portion of the external insulating plate was lowered, and the hermeticity failure of the sealed battery made from the obtained battery header was 2%.
[0017]
【The invention's effect】
Since the sealed battery of the present invention is provided with a pressing plate for contacting the tip of the electrode lead pin deformed by caulking when the electrode lead pin is caulked in contact with the insulating plate, the electrode lead pin at the time of caulking is provided. Since the amount of deformation of the cylindrical portion is large and uniform, the adhesion to the insulating plate is improved, and a sealed battery with improved airtightness can be obtained.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a battery header portion of a sealed battery according to the present invention.
FIG. 2 is a diagram illustrating an example of a square sealed battery.
FIG. 3 is a diagram illustrating a battery header.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Metal container, battery can, 2 ... Upper end, 3 ... Metal plate, 3A ... Recessed part, 4 ... Electrode lead-out pin, 4A ... Cylindrical part, 4B ... Collar part, 5 ... Battery header, 6A ... External insulation board, 6A1 ... Plate-like part, 6A2 ... Cylindrical part, 6B ... Insulating insulating plate, 7 ... Presser plate, 8 ... Thin wall part, 9 ... Injection port, 10 ... Caulking jig, 11 ... Tip part, 12 ... Step part, a ... Curl diameter, b ... bulge diameter

Claims (1)

電池缶に設けた開孔部に内部に貫通孔を有する絶縁性部材を介在させて、該貫通孔に電極導出ピンを挿入してかしめて固着した電池ヘッダーを設けた密閉型電池において、電極導出ピンのかしめによって折れ曲がった電極導出ピンの先端部は、絶縁性部材に接して設けた金属製の押さえ板に形成した段差部において係止されていることを特徴とする密閉型電池。In a sealed battery in which an insulating member having a through hole is interposed in an opening provided in a battery can, and an electrode lead-out pin is inserted into the through-hole and a battery header fixed by caulking is provided. A sealed battery characterized in that a tip portion of an electrode lead pin bent by caulking of a pin is locked at a step portion formed on a metal pressing plate provided in contact with an insulating member.
JP2000014381A 2000-01-24 2000-01-24 Sealed battery Expired - Lifetime JP4201301B2 (en)

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Publication number Priority date Publication date Assignee Title
KR100751310B1 (en) 2001-09-24 2007-08-22 삼성에스디아이 주식회사 Cap assembly and retangular- type secondary battery therewith
KR100768179B1 (en) * 2001-10-16 2007-10-17 삼성에스디아이 주식회사 Cap assembly and rectangular- type secondary battery therewith
DE102004047108A1 (en) * 2004-09-27 2006-04-13 Rudolf Klaschka Lid for housing of electrolytic capacitor and other electronic components with two terminals and O-ring between lid of aluminium or its alloy, or plastics
CN1655389A (en) 2005-03-04 2005-08-17 北京中信国安盟固利新材料技术研究院有限公司 High capacity lithium ion secondary battery with metal case
JP5044933B2 (en) * 2006-01-17 2012-10-10 パナソニック株式会社 battery
KR100795681B1 (en) * 2006-03-28 2008-01-21 삼성에스디아이 주식회사 Secondary battery
WO2011117971A1 (en) * 2010-03-23 2011-09-29 トヨタ自動車株式会社 Method for producing battery, and battery
KR101432461B1 (en) 2010-12-22 2014-08-20 도요타지도샤가부시키가이샤 Battery
JP5394413B2 (en) * 2011-01-12 2014-01-22 株式会社ホンダロック Ignition switch for vehicles
CN103299388B (en) 2011-01-12 2016-09-28 本田制锁有限公司 Ignition switch for vehicle
JP5699296B2 (en) * 2011-09-12 2015-04-08 株式会社貴匠技研 Metal caulking structure and bus bar using this caulking structure
JP6066283B2 (en) * 2012-12-07 2017-01-25 台達電子工業股▲ふん▼有限公司Deltaelectronics,Inc. Fixing structure and battery manufacturing method
JP2016087300A (en) * 2014-11-10 2016-05-23 株式会社Screenホールディングス Safety belt locking mechanism and substrate processing apparatus

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