JPH07183024A - Square sealed battery - Google Patents
Square sealed batteryInfo
- Publication number
- JPH07183024A JPH07183024A JP5324016A JP32401693A JPH07183024A JP H07183024 A JPH07183024 A JP H07183024A JP 5324016 A JP5324016 A JP 5324016A JP 32401693 A JP32401693 A JP 32401693A JP H07183024 A JPH07183024 A JP H07183024A
- Authority
- JP
- Japan
- Prior art keywords
- rivet
- tip
- sealing body
- cover plate
- head
- 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
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、角型密閉電池に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rectangular sealed battery.
【０００２】[0002]
【従来の技術】ニカド電池（ニッケルカドミウム二次電
池）の後継としてニッケル水素電池が採用されてきてい
る。このニッケル水素電池は、正極にニッケルを、負極
に水素吸蔵合金を用いたもので、ニカド電池に比べて単
位体積当たりのエネルギ容量が高く、充放電特性、急速
充電特性、寿命特性等の諸特性についてもニカド電池に
遜色のない特性を有している。2. Description of the Related Art A nickel hydrogen battery has been adopted as a successor to a nicad battery (nickel cadmium secondary battery). This nickel-metal hydride battery uses nickel for the positive electrode and a hydrogen storage alloy for the negative electrode, and has a higher energy capacity per unit volume than Nicad batteries, and has various characteristics such as charge / discharge characteristics, rapid charging characteristics, and life characteristics. Also has characteristics comparable to Nicad batteries.
【０００３】ところで、通常のニカド電池、ニッケル水
素電池は、円筒形とされているために機器への収納に際
してデッドスペースが発生し、特に、小型軽量化を図っ
ているコードレス機器においては大きな問題となってき
ている。そこで、機器への収納に際してデッドスペース
をなくし、その分電池容量の増加を図るようにした角型
の電池が採用されてきている。By the way, since ordinary Ni-Cd batteries and nickel-hydrogen batteries have a cylindrical shape, a dead space is generated when they are housed in a device, which is a serious problem especially in cordless devices that are small and lightweight. It has become to. Therefore, a prismatic battery has been adopted in which a dead space is eliminated when the device is housed in a device and the battery capacity is increased accordingly.
【０００４】角型の密閉電池は、図３及び図４に示すよ
うに偏平な直方体状をなし、例えば、３個並べると円筒
型電池一個分を収納するスペースに相当する大きさとな
るように形成されており、外装缶１内に発電要素２が嵌
挿され、電解液が注入された後上部開口端１ｃに封口体
３が嵌合装着され、全周を溶接されて密閉構造とされて
いる。The prismatic sealed battery has a flat rectangular parallelepiped shape as shown in FIGS. 3 and 4, and is formed so that, for example, when three cells are arranged, a size corresponding to a space for accommodating one cylindrical battery is obtained. The power generating element 2 is fitted in the outer can 1, and after the electrolyte is injected, the sealing body 3 is fitted and attached to the upper opening end 1c, and the entire circumference is welded to form a closed structure. .
【０００５】封口体３は、蓋板４の中央に穿設された孔
４ａにガスケット５を介して液密に嵌合装着され、軸部
６ｂの下端が発電要素２の陽極集電体が接続されるリー
ド板７の一端と共に蓋板４にカシメ固定され、頭部６ａ
の上面が蓋板４の上面と略面一をなして裸出し、中央に
小孔６ｃが穿設されたリベット６と、当該リベット６の
頭部６ａに載置され、外装缶１の各短側面１ｂ側に臨む
両側部に夫々設けられたフランジ８ａを介して溶着固定
され、各長側面１ａに臨む各側面８ｂの各下端に夫々ガ
スの逃げ路となる切欠８ｃが設けられた陽極キャップ８
と、陽極キャップ８に内蔵され、リベット６の孔６ｃを
閉塞する安全弁９等により構成されている。The sealing body 3 is liquid-tightly fitted and mounted through a gasket 5 into a hole 4a formed in the center of the cover plate 4, and the lower end of the shaft portion 6b is connected to the anode current collector of the power generating element 2. Is fixed to the lid plate 4 by caulking together with one end of the lead plate 7
The upper surface of the rivet 6 is substantially flush with the upper surface of the cover plate 4 and is bare, and is placed on the rivet 6 having a small hole 6c in the center and the head 6a of the rivet 6, and each short of the outer can 1 is placed. The anode cap 8 is welded and fixed via flanges 8a respectively provided on both sides facing the side surface 1b, and each side surface 8b facing each long side surface 1a is provided with a notch 8c serving as a gas escape path at each lower end.
And a safety valve 9 or the like which is built in the anode cap 8 and closes the hole 6c of the rivet 6.
【０００６】[0006]
【発明が解決しようとする課題】ところで、従来のリベ
ット６は、図５に示すように、孔６ａが形成されている
中空の軸部６ｂの肉厚が一定で、先端６ｄのみ肉厚を薄
くしてカシメを行い易くして、上下左右から適度の圧力
Ｆを加えることによりカシメを行っている。そして、カ
シメ加工時に図６のように軸部６ｂの途中に挫屈が発生
する。このようなカシメ加工時にリベットの軸部に積極
的に挫屈を発生させて液密性を高めるようにした技術
は、例えば、実願３−１１８０３号公報に開示されてい
る。By the way, in the conventional rivet 6, as shown in FIG. 5, the thickness of the hollow shaft portion 6b in which the hole 6a is formed is constant, and only the tip 6d is thin. Then, the caulking is facilitated, and the caulking is performed by applying an appropriate pressure F from the upper, lower, left and right sides. Then, during caulking, buckling occurs in the middle of the shaft portion 6b as shown in FIG. A technique in which buckling is actively generated in the rivet shaft portion during crimping to enhance liquid tightness is disclosed in, for example, Japanese Patent Application No. 3-11803.
【０００７】しかしながら、リベット６の軸部６ｂをカ
シメて挫屈を発生させる場合、挫屈精度のコントロール
が非常に難しく、気密性や耐漏液性にバラツキが存在し
たり、封口体の高さ寸法が安定しない等の問題がある。
本発明は、上述の点に鑑みてなされたもので、リベット
のカシメ時に挫屈を無くし、気密性のバラツキを無くす
ると共に、封口体の高さ寸法の安定化を図るようにした
角型密閉電池を提供することを目的とする。However, when the shaft portion 6b of the rivet 6 is crimped to cause buckling, it is very difficult to control the buckling accuracy, and there are variations in airtightness and liquid leakage resistance, and the height of the sealing body is large. Is not stable.
The present invention has been made in view of the above points, eliminates buckling during rivet crimping, eliminates variations in airtightness, and stabilizes the height dimension of the sealing body. The purpose is to provide a battery.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に本発明は、リベットの頭部が蓋板の上方に突出し、中
空の軸部が蓋板の孔にガスケットを介して嵌挿され、前
記蓋板の下面に突出する先端に嵌合されたリード板と共
にカシメ固定された封口体を、発電要素を内蔵せる外装
缶に装着して成る角型密閉電池おいて、前記リベットの
軸部の肉厚を、頭部の付け根近傍から先端に向けて徐々
に薄肉とした構成としたものである。In order to achieve the above object, the present invention is directed to a head of a rivet projecting above a cover plate, and a hollow shaft part fitted into a hole of the cover plate through a gasket. In a prismatic sealed battery in which a sealing body fixed by crimping together with a lead plate fitted to a tip protruding on the lower surface of the lid plate is attached to an outer can containing a power generating element, The wall thickness is gradually reduced from near the base of the head toward the tip.
【０００９】[0009]
【作用】リベットは、蓋板の孔に軸部がガスケットを介
して嵌挿され、蓋板の下面から突出する下端に嵌合され
たリード板と共にカシメ固定される。このとき軸部は、
肉厚が頭部の付け根近傍から先端に向かって徐々に薄肉
となっているために途中で挫屈することなくカシメ固定
される。これによりに気密性のバラツキが無くなり、封
口体の高さ寸法の安定化が図られる。In the rivet, the shaft portion is inserted into the hole of the cover plate via the gasket, and the rivet is caulked and fixed together with the lead plate fitted to the lower end protruding from the lower surface of the cover plate. At this time, the shaft part
Since the wall thickness gradually decreases from near the base of the head toward the tip, it is fixed by caulking without buckling in the middle. This eliminates the variation in airtightness and stabilizes the height dimension of the sealing body.
【００１０】[0010]
【実施例】以下本発明の一実施例を添付図面に基づいて
詳述する。図１において、リベット１０は、頭部１０ａ
と、当該頭部１０ａの下面中央に一体に垂設された軸部
１０ｂとにより構成されており、頭部１０ａの上面中央
から軸部１０ｂの軸心を貫通して孔１０ｃが穿設されて
いる。軸部１０ｂは、外径が頭部１０ａとの付け根近傍
から先端１０ｄに向かって徐々に縮径されて肉厚がテー
パ状に薄くなって形成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In FIG. 1, the rivet 10 has a head 10a.
And a shaft portion 10b integrally hung in the center of the lower surface of the head portion 10a, and a hole 10c is formed from the center of the upper surface of the head portion 10a through the shaft center of the shaft portion 10b. There is. The shaft portion 10b is formed such that the outer diameter is gradually reduced from the vicinity of the base of the head portion 10a toward the tip 10d, and the wall thickness is tapered to be thin.
【００１１】リベット１０は、軸部１０ｂの肉厚が頭部
１０ａから先端１０ｄに向かって徐々に薄くなっている
ために上下方向から圧力Ｆを付与すると、当該軸部１０
ｂは、途中で挫屈することなく２点鎖線で示すように拡
径可能となる。かかる形状のリベット１０は、導電性及
び耐銹性を有する金属部材例えば、ニッケルメッキを施
した鋼板により形成されている。The rivet 10 has a shaft 10b whose wall thickness gradually decreases from the head 10a toward the tip 10d.
b can be expanded in diameter as shown by a chain double-dashed line without buckling in the middle. The rivet 10 having such a shape is formed of a metal member having conductivity and rust resistance, for example, a nickel-plated steel plate.
【００１２】以下に作用を説明する。図２に示すように
リベット１０は、軸部１０ｂが蓋板４の中央に穿設され
ている孔４ａにガスケット５を介して嵌挿され、その先
端１０ｄが下方に突出し、当該先端１０ｄにリード板７
の一端が孔７ａを介して嵌合される。次いで、図示しな
いカシメ装置により当該リベット１０の頭部１０ａと軸
部１０ｂの先端１０ｄとの間に前記所定の圧力が付与さ
れる。The operation will be described below. As shown in FIG. 2, in the rivet 10, the shaft portion 10b is fitted and inserted into the hole 4a formed in the center of the cover plate 4 through the gasket 5, the tip 10d thereof projects downward, and the tip 10d leads. Board 7
One end of is fitted through the hole 7a. Then, the predetermined pressure is applied between the head 10a of the rivet 10 and the tip 10d of the shaft 10b by a caulking device (not shown).
【００１３】リベット１０の軸部１０ｂは、前記圧力Ｆ
が付与されるに伴い徐々に拡径され、軸部１０ｂの中央
がガスケット５の孔５ａの内面に圧接し、先端１０ｄが
拡径されて大きく湾曲しリード板７の下面に圧接する。
これによりリベット１０は、蓋板４にガスケット５、リ
ード板７と共に強固にカシメ固定される。そして、リベ
ット１０の軸部１０ｂは、付け根から先端に向かってテ
ーパ状をなして徐々に薄肉とされているためにカシメ時
において途中で挫屈することがなく、気密性のバラツキ
が無くなると共に、封口体３の高さ寸法が安定化する。The shaft portion 10b of the rivet 10 has the pressure F
The diameter of the shaft portion 10b is gradually increased as the pressure is applied, and the center of the shaft portion 10b is pressed against the inner surface of the hole 5a of the gasket 5, and the tip 10d is expanded and curved greatly and pressed against the lower surface of the lead plate 7.
As a result, the rivet 10 is firmly caulked and fixed to the lid plate 4 together with the gasket 5 and the lead plate 7. Since the shaft portion 10b of the rivet 10 is tapered from the base toward the tip and is gradually thinned, it does not buckle in the middle during crimping, airtightness variation is eliminated, and the sealing The height dimension of the body 3 is stabilized.
【００１４】尚、上記実施例ではリベット１０の軸部１
０ｂの外径を付け根から先端１０ｄに向かって徐々に縮
径させて薄肉化を図るようにしたが、反対に、孔１０ｃ
の内径を軸部１０ｂの付け根近傍から先端１０ｄに向か
って徐々に拡径させてテーパ状に薄肉化にするようにし
ても良い。In the above embodiment, the shaft portion 1 of the rivet 10 is
The outer diameter of 0b was gradually reduced from the root toward the tip 10d to reduce the wall thickness.
The inner diameter may be gradually increased from the vicinity of the base of the shaft portion 10b toward the tip 10d to taper the wall thickness.
【００１５】[0015]
【発明の効果】以上説明したように本発明によれば、封
口体の蓋板へのリベットのカシメ時において当該リベッ
トの軸部に挫屈を発生させることが無くなり、気密性の
バラツキが無くなると共に、封口体の高さ寸法の安定化
が図られるという効果がある。As described above, according to the present invention, when the rivet is crimped to the cover plate of the sealing body, the shank of the rivet is not buckled, and the airtightness is not varied. The effect is that the height of the sealing body can be stabilized.
【図１】本発明の角型密閉電池に適用するリベットの一
実施例を示す断面図である。FIG. 1 is a cross-sectional view showing an example of a rivet applied to a square sealed battery of the present invention.
【図２】図１に示すリベットを使用した角型密閉電池の
封口体の断面図である。FIG. 2 is a sectional view of a sealing body of a rectangular sealed battery using the rivet shown in FIG.
【図３】角型密閉電池の上部斜視図である。FIG. 3 is a top perspective view of a rectangular sealed battery.
【図４】図３の矢線ＩＩＩ−ＩＩＩに沿う断面図であ
る。FIG. 4 is a sectional view taken along the line III-III in FIG.
【図５】従来の角型密閉電池に使用されているしたリベ
ットの断面図である。FIG. 5 is a cross-sectional view of a rivet used in a conventional rectangular sealed battery.
【図６】図５のリベットを使用した場合の封口体の断面
図である。6 is a cross-sectional view of the sealing body when the rivet of FIG. 5 is used.
１ 外装缶 ２ 発電要素 ３ 封口体 ４ 蓋板 ５ ガスケット ７ リード板 １０ リベット 1 Exterior Can 2 Power Generation Element 3 Sealing Body 4 Lid Plate 5 Gasket 7 Lead Plate 10 Rivet
フロントページの続き (72)発明者 星野 耕一 福島県いわき市常磐下船尾町杭出作23−６ 古河電池株式会社いわき事業所内 (72)発明者 樋之津 直義 福島県いわき市常磐下船尾町杭出作23−６ 古河電池株式会社いわき事業所内Front page continued (72) Inventor Koichi Hoshino, Haniwa Shimo-Funao-cho, Iwaki-shi, Fukushima Prefecture 23-6 Furukawa Battery Co., Ltd., Iwaki Plant (72) Inventor Naoki Yoshinozu, Hanawa-Shimo-Funao, Iwaki-shi, Fukushima Prefecture Deed 23-6 Furukawa Battery Co., Ltd., Iwaki Plant
Claims (1)
中空の軸部が蓋板の孔にガスケットを介して嵌挿され、
前記蓋板の下面に突出する先端に嵌合されたリード板と
共にカシメ固定された封口体を、発電要素を内蔵せる外
装缶に装着して成る角型密閉電池おいて、 前記リベットの軸部の肉厚を、頭部の付け根近傍から先
端に向けて徐々に薄肉としたことを特徴とする角型密閉
電池。1. The head of the rivet projects above the lid plate,
The hollow shaft is inserted into the hole of the cover plate through the gasket,
In a prismatic sealed battery formed by mounting a sealing body, which is fixed by crimping together with a lead plate fitted to a tip protruding on the lower surface of the lid plate, in an outer can containing a power generating element, A sealed prismatic battery characterized in that the wall thickness is gradually reduced from near the base of the head toward the tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5324016A JPH07183024A (en) | 1993-12-22 | 1993-12-22 | Square sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5324016A JPH07183024A (en) | 1993-12-22 | 1993-12-22 | Square sealed battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07183024A true JPH07183024A (en) | 1995-07-21 |
Family
ID=18161203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5324016A Pending JPH07183024A (en) | 1993-12-22 | 1993-12-22 | Square sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07183024A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010105003A (en) * | 2000-05-18 | 2001-11-28 | 김순택 | Prismatic type sealed battery |
| JP2009087693A (en) * | 2007-09-28 | 2009-04-23 | Sanyo Electric Co Ltd | Sealed battery and its manufacturing method |
| KR100913318B1 (en) * | 2007-11-13 | 2009-08-26 | 최병길 | Device and method for manufacturing rivet |
| JP2009283256A (en) * | 2008-05-21 | 2009-12-03 | Toyota Motor Corp | Power supply device and power supply device manufacturing method |
| US8790821B2 (en) | 2010-05-17 | 2014-07-29 | Gs Yuasa International Ltd. | Battery |
| JP2015103436A (en) * | 2013-11-26 | 2015-06-04 | 株式会社豊田自動織機 | Current cutoff device and power storage device using the same |
| WO2023283762A1 (en) * | 2021-07-12 | 2023-01-19 | Hefei Gotion High-Tech Power Energy Co., Ltd. | Cylindrical battery cell, battery and method for forming cylindrical battery cell |
-
1993
- 1993-12-22 JP JP5324016A patent/JPH07183024A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010105003A (en) * | 2000-05-18 | 2001-11-28 | 김순택 | Prismatic type sealed battery |
| JP2009087693A (en) * | 2007-09-28 | 2009-04-23 | Sanyo Electric Co Ltd | Sealed battery and its manufacturing method |
| KR100913318B1 (en) * | 2007-11-13 | 2009-08-26 | 최병길 | Device and method for manufacturing rivet |
| JP2009283256A (en) * | 2008-05-21 | 2009-12-03 | Toyota Motor Corp | Power supply device and power supply device manufacturing method |
| US8790821B2 (en) | 2010-05-17 | 2014-07-29 | Gs Yuasa International Ltd. | Battery |
| JP2015103436A (en) * | 2013-11-26 | 2015-06-04 | 株式会社豊田自動織機 | Current cutoff device and power storage device using the same |
| WO2023283762A1 (en) * | 2021-07-12 | 2023-01-19 | Hefei Gotion High-Tech Power Energy Co., Ltd. | Cylindrical battery cell, battery and method for forming cylindrical battery cell |
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