JPS62219460A - Cylindrical battery - Google Patents
Cylindrical batteryInfo
- Publication number
- JPS62219460A JPS62219460A JP61060594A JP6059486A JPS62219460A JP S62219460 A JPS62219460 A JP S62219460A JP 61060594 A JP61060594 A JP 61060594A JP 6059486 A JP6059486 A JP 6059486A JP S62219460 A JPS62219460 A JP S62219460A
- Authority
- JP
- Japan
- Prior art keywords
- sealing plate
- sealing
- cylindrical battery
- battery
- insulating ring
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract 3
- 238000010276 construction Methods 0.000 abstract 2
- 230000005611 electricity Effects 0.000 abstract 1
- 239000011324 bead Substances 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はスパイラル構造を有する円筒形電池に係り、特
に月日構造の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cylindrical battery having a spiral structure, and particularly relates to an improvement in the chronological structure.
［従来の技術］
円筒形の密閉電池の封口ｖ４造には第５図に示されるよ
うに外装缶上部に封口板を支える径小ビード部を設けて
上端部を折曲密封口しているものが多い。この従来技術
として特開昭５９−１７３９５０号公報、実開昭６０−
３２７６２号公報に記載されている。中には、このビー
ド部をなるべく小ざくするために封口板周囲の環状絶縁
リングの形状を工夫しているものとしては、実開昭５７
−１７０２７２号公報、実開昭５７−７５４７７号公報
がある。これはビード部が大きいと電池内容積を減少す
るので、これを最小限に留めるのを目的としている。[Prior Art] As shown in Fig. 5, the sealed v4 structure of a cylindrical sealed battery has a small-diameter bead portion that supports a sealing plate on the top of the outer can, and the upper end is bent to form a sealed mouth. There are many. As this prior art, Japanese Patent Application Laid-Open No. 173950/1983 and Utility Model Application No. 60-
It is described in Publication No. 32762. Among them, the shape of the annular insulating ring around the sealing plate is devised in order to make this bead part as small as possible.
-170272 publication and Utility Model Application Publication No. 57-75477. This is because if the bead portion is large, the internal volume of the battery will be reduced, so the purpose is to keep this to a minimum.
あるいは二重缶構造としてインナー缶にて封口板を支え
る構造も、実開昭５７−１９４２５４号公報に示される
構造である。Alternatively, a structure in which the sealing plate is supported by an inner can as a double can structure is also the structure shown in Japanese Utility Model Application Publication No. 57-194254.
［発明が解決しようとする問題点］
近年の電子機器の発達に伴い、電池の重負荷放電性能の
向上が強く望まれている。これを実用するものとして電
極面積を大幅に増加でさ゛るスパイラル構造の電極が提
案されている。この電極においては電池内容積をいかに
利用するかで性能が決定されるため、大きな電極面積の
取れる構造が望ましい。しかし従来の＠造においては封
口板を支えるためのビード部かあって電極高さを制限し
たり、あるいは内部にインナー色があるために十分な電
極長さを確保できない等の問題点があった。[Problems to be Solved by the Invention] With the recent development of electronic devices, there is a strong desire to improve the heavy load discharge performance of batteries. To put this into practice, an electrode with a spiral structure has been proposed, which greatly increases the electrode area. Since the performance of this electrode is determined by how the internal volume of the battery is utilized, a structure that allows for a large electrode area is desirable. However, the conventional @ structure has problems such as the presence of a bead to support the sealing plate, which limits the electrode height, and the inability to secure sufficient electrode length due to the inner color inside. .
本発明は、ビード部やインナー化を用いずに優れた密封
性能を実現できる封口構造を提案するもので、この構造
により、より広い面積の電極群を収納でき、優れた放電
性能の電池を可能とすることを目的とする。The present invention proposes a sealing structure that can achieve excellent sealing performance without using a bead or an inner layer.This structure allows a wider area of electrode groups to be accommodated, making it possible to create a battery with excellent discharge performance. The purpose is to
［問題点を解決するための手段］
上記の目的を達成するために、本発明の実施例に対応し
て本発明の詳細な説明すると、帯状の電極板の巻回芯体
を兼ねた集電棒頂部に電極端子板を兼ねた封目板を載置
し、封口板の外周の環状の絶縁リングを介して外装缶開
口部を折曲密封口している電池であって、封口板最外周
上端のエツジ部と外装置ｎ内側との間にある環状絶縁リ
ングの圧縮度か最も高くなるようにした円筒形電池であ
る。[Means for Solving the Problems] In order to achieve the above object, the present invention will be described in detail in accordance with embodiments of the present invention. A battery in which a sealing plate that also serves as an electrode terminal plate is placed on the top, and the opening of the outer can is bent and sealed via an annular insulating ring around the outer circumference of the sealing plate, and the uppermost edge of the outermost periphery of the sealing plate This is a cylindrical battery in which the degree of compression of the annular insulating ring between the edge of the battery and the inside of the outer device is maximized.
［作 用コ
本発明では、上記の構成によってスパイラル電（※ｎＹ
の巻回芯体を兼ねる集電棒にて封口板を支えるととしに
、封口板外周の環状の合成樹脂製絶縁リングを介して外
装缶を折曲し、密１４０している。[Function] In the present invention, the above-mentioned configuration allows a spiral electric current (*nY
In order to support the sealing plate with a current collecting rod which also serves as a wound core, the outer can is bent and sealed 140 times through an annular synthetic resin insulating ring around the outer circumference of the sealing plate.
このとき環状絶縁リングは封口板外周と外装缶折曲面に
よって圧縮されるのであるが、封口板最外周上側エツジ
部に接する部分の圧縮度が最も高くなるように、絶縁リ
ングと折曲部の形状を決めることが必要である。この理
由は大きく分けて二つある。一つは、上側エツジ部が下
側エツジ部より圧縮力が強くかかるため、結果として封
口板には下向きの力が動くことになり、この力が巻回芯
体である集電棒と電極端子を兼ねる封口板とを圧接して
良好な導電接続を可能とする。一方、電池を密封口する
立場で考えると、我々が種々実験した結果では、封口ガ
スケットである絶縁リングを封口板外周と外装缶の間で
圧縮締着する場合、封口板端面鉛直部の平面部でｒ３：
縮するＪ、りもエツジ部で圧縮するはうがより良好な密
ｊ１状態を実現できるという事実に基づく。この理由は
はっきりしないが、広い範囲で圧縮されているより、あ
る一部が圧縮されている方が封口ガスケットとしての能
力が高い状態で維持されるためと推定される。環状絶縁
リングの封口部での圧縮率は元の外周部肉厚の１０〜７
０％の範囲とするのが好ましい。At this time, the annular insulating ring is compressed by the outer periphery of the sealing plate and the folded surface of the outer can. It is necessary to decide. There are two main reasons for this. One is that the compressive force is stronger on the upper edge than on the lower edge, and as a result, a downward force moves on the sealing plate, and this force acts on the current collector rod, which is the wound core, and the electrode terminal. A good conductive connection is made possible by pressure contacting the sealing plate, which also serves as a sealing plate. On the other hand, from the standpoint of sealing batteries, we have conducted various experiments and found that when an insulating ring, which is a sealing gasket, is compressed and fastened between the outer periphery of the sealing plate and the outer can, the flat surface of the vertical part of the end face of the sealing plate And r3:
This is based on the fact that compressing J and rimming at the edges can achieve a better compaction state. The reason for this is not clear, but it is presumed that the performance as a sealing gasket is maintained in a higher state when a certain part is compressed than when a wide range is compressed. The compression ratio at the sealing part of the annular insulating ring is 10 to 7 of the original outer peripheral wall thickness.
It is preferably in the range of 0%.
１０％未満では下向き力が弱いために集電体と封口板と
の接触が不十分となる恐れがあり、７０％を超えると圧
縮率が高過ぎて長期貯蔵の時に合成樹脂製の絶縁リング
にストレスクラックが発生する傾向が現われるためであ
る。If it is less than 10%, the downward force is weak and there is a risk that the contact between the current collector and the sealing plate will be insufficient. If it exceeds 70%, the compression ratio will be too high and the synthetic resin insulating ring may be damaged during long-term storage. This is because stress cracks tend to occur.
環状絶縁リングは、断面り字状で内側に封口板と一体化
できるアンダーカットを有する形状の方が電池組み立て
時の効率が良好である。The annular insulating ring is more efficient when assembling the battery when it has a cross-sectional shape and has an undercut on the inside that allows it to be integrated with the sealing plate.
本発明の封口構造はビート部を有しないために、より高
い電極寸法が可能となり、インナー化も用いていないた
めに、より長い電極寸法も可能とする。このために、よ
り大きな電気容量と、より優れた中負拘性能を有する電
池が実現可能となる。Since the sealing structure of the present invention does not have a beat portion, it allows for a higher electrode size, and because it does not use an inner layer, it also allows for a longer electrode size. For this reason, it becomes possible to realize a battery having a larger electric capacity and better medium load performance.
［実施例］
本発明の一実施例を図面を用いて以下に説明する。第１
図は本発明電池の縦断面図を示すａ巻回芯体を兼ねる正
極の集電体１の頂部に圧接している正極端子を兼ねる封
口板２は、外周をポリプロピレン製の環状絶縁リング３
を介して負極端子を兼ねる外装缶４によって密封口され
る。集電棒１はポリプロピレン製の絶縁板５によって支
持される。６は正極シート７、セパレータ８．負極シー
ト９からなる発電要素である。正極シートの集電体巻回
開始端部１０は集電棒１にスポット溶接され、負極シー
トの集電体最外周部１１は外装缶に圧接されることによ
り、それぞれ導電接続されている。第２図および第３図
は絶縁リング３の断面図を示す。第２図は１字形、第３
図は側面上部を半円状としてもよい。内側（図で右側）
には封口板２を保持するためのアンダーカット部１２が
設けられているため、封口板２と絶縁リング３は嵌合し
て一体化できる。電池組み立て時は、この−体化した部
品を使用できるため製造工程を簡素化できる。第４図は
、電池組み立て時の封目の前後を示す要部断面図で、絶
縁リング３は封口後外装缶によって内側に圧縮される。[Example] An example of the present invention will be described below with reference to the drawings. 1st
The figure shows a longitudinal cross-sectional view of the battery of the present invention.A A sealing plate 2, which also serves as a positive electrode terminal, is in pressure contact with the top of a positive electrode current collector 1, which also serves as a wound core.
The external can 4, which also serves as a negative electrode terminal, is used to seal the opening. The current collector rod 1 is supported by an insulating plate 5 made of polypropylene. 6 is a positive electrode sheet 7, a separator 8. This is a power generation element consisting of a negative electrode sheet 9. The current collector winding start end 10 of the positive electrode sheet is spot welded to the current collector rod 1, and the outermost peripheral part 11 of the current collector of the negative electrode sheet is pressed into contact with the outer can, so that they are electrically connected. 2 and 3 show cross-sectional views of the insulating ring 3. FIG. Figure 2 is 1st figure, 3rd figure
In the figure, the upper side surface may be semicircular. Inside (right side in the diagram)
Since the undercut portion 12 for holding the sealing plate 2 is provided, the sealing plate 2 and the insulating ring 3 can be fitted and integrated. When assembling the battery, the integrated parts can be used, which simplifies the manufacturing process. FIG. 4 is a sectional view of a main part showing the front and back of the seal during battery assembly, and the insulating ring 3 is compressed inward by the outer can after sealing.
この結果、破線で示されるような断面形状に変形するた
めに、電池内圧が一］：昇時も封口板を十分密封してお
くことが可能となる。また、このとき封口板上側のエツ
ジ部１３に接する絶縁リングが最も圧縮されている。As a result, since the cross-sectional shape is deformed as shown by the broken line, it becomes possible to keep the sealing plate sufficiently sealed even when the battery internal pressure rises. Further, at this time, the insulating ring in contact with the edge portion 13 on the upper side of the sealing plate is most compressed.
このような構成にて試作した２／３Ａサイズの電池の電
極高さは２７＃であった。これに対し、従来のビードを
用いた構造では２４１１ｔＩ１１であり、１０％以上の
容積アップが可能となった。また貯蔵性能においても従
来の封口構造の電池とまったく遜色のない結果を示した
。なお、絶縁リングと封口板あるいは外装缶との間にシ
ール剤を充填することは密封性の向上に役立つ。The electrode height of a 2/3A size battery prototyped with such a configuration was 27#. In contrast, in the conventional structure using beads, the capacity was 2411tI11, making it possible to increase the volume by more than 10%. In addition, in terms of storage performance, the battery showed no inferiority to conventional sealed batteries. Note that filling a sealant between the insulating ring and the sealing plate or the outer can helps improve sealing performance.
第１図は本発明の実施例である円筒形電池の要部断面図
、第２図および第３図は本発明の実施例における絶縁リ
ンクの断面図である。第４図は本斤明の実施例の電池組
み立て８．１の封口前後を示す３・・・環状絶縁リング
４・・・外装缶１２・・・アンダーカット部FIG. 1 is a cross-sectional view of a main part of a cylindrical battery according to an embodiment of the present invention, and FIGS. 2 and 3 are cross-sectional views of an insulating link according to an embodiment of the present invention. Fig. 4 shows before and after sealing of the battery assembly 8.1 of the embodiment of Akira Honko 3... Annular insulating ring 4... Exterior can 12... Undercut portion
Claims (3)
極端子を兼ねた封口板を載置し、封口板の外周の環状絶
縁リングを介して外装缶開口部を折曲密封口している電
池において、封口板最外周上端のエッジ部と外装缶内側
との間にある環状絶縁リングの圧縮度が最も高くなるよ
うにしたことを特徴とする円筒形電池。(1) A sealing plate that also serves as an electrode terminal is placed on the top of a current collector rod that also serves as a winding core of a band-shaped electrode plate, and the opening of the outer can is bent and sealed via an annular insulating ring around the outer periphery of the sealing plate. 1. A cylindrical battery, characterized in that the degree of compression of the annular insulating ring between the upper edge of the outermost periphery of the sealing plate and the inside of the outer can is maximized.
、初期リング肉厚の１０〜７０％の範囲内にある特許請
求の範囲第１項記載の円筒形電池。(2) The cylindrical battery according to claim 1, wherein the portion of the annular insulating ring having the highest degree of compression is within a range of 10 to 70% of the initial ring thickness.
のアンダーカット部を有する特許請求の範囲第１項およ
び第２項記載の円筒形電池。(3) The cylindrical battery according to claims 1 and 2, wherein the annular insulating ring has an undercut portion on the inside for integration with the sealing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61060594A JPS62219460A (en) | 1986-03-20 | 1986-03-20 | Cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61060594A JPS62219460A (en) | 1986-03-20 | 1986-03-20 | Cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62219460A true JPS62219460A (en) | 1987-09-26 |
Family
ID=13146715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61060594A Pending JPS62219460A (en) | 1986-03-20 | 1986-03-20 | Cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62219460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002523877A (en) * | 1998-08-21 | 2002-07-30 | エヴァレディー バッテリー カンパニー インコーポレイテッド | Electrochemical cell with flat sealing assembly |
-
1986
- 1986-03-20 JP JP61060594A patent/JPS62219460A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002523877A (en) * | 1998-08-21 | 2002-07-30 | エヴァレディー バッテリー カンパニー インコーポレイテッド | Electrochemical cell with flat sealing assembly |
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