JP2847811B2 - Cylindrical secondary battery - Google Patents
Cylindrical secondary batteryInfo
- Publication number
- JP2847811B2 JP2847811B2 JP1274114A JP27411489A JP2847811B2 JP 2847811 B2 JP2847811 B2 JP 2847811B2 JP 1274114 A JP1274114 A JP 1274114A JP 27411489 A JP27411489 A JP 27411489A JP 2847811 B2 JP2847811 B2 JP 2847811B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- insulating
- secondary battery
- electrode
- cylindrical secondary
- 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.)
- Expired - Lifetime
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
- Sealing Battery Cases Or Jackets (AREA)
- Cell Separators (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、円筒形二次電池に関するものである。Description: TECHNICAL FIELD The present invention relates to a cylindrical secondary battery.
従来の技術 従来、リード付の正極板を使用した円筒形二次電池で
は、第６図に示すようにリード先端部を除くリード部７
及びリード取付部に、リードとケース及び電極群中の負
極との短絡を防ぐために、極板の両面側より絶縁テープ
８を接着し、かつケースと電極群中の正極との短絡を防
ぐために、第５図のように電極群上に絶縁リング９を設
置するのが一般的であった。2. Description of the Related Art Conventionally, in a cylindrical secondary battery using a positive electrode plate with a lead, as shown in FIG.
In order to prevent a short circuit between the lead and the negative electrode in the case and the electrode group, the insulating tape 8 is bonded from both sides of the electrode plate, and to prevent a short circuit between the case and the positive electrode in the electrode group, In general, an insulating ring 9 was provided on the electrode group as shown in FIG.
発明が解決しようとする課題 しかしながら、上記従来の方法だけでは、正極リード
部７を封口板10の裏面に溶接して、ケースを閉塞する
際、リードわん曲部12が電極群中の負極板４の上部エッ
ジ部と接触し、絶縁テープが破損して内部短絡が発生す
るおそれがあるという欠点を有していた。However, according to the conventional method alone, when the positive electrode lead portion 7 is welded to the back surface of the sealing plate 10 to close the case, the bent lead portion 12 is connected to the negative electrode plate 4 in the electrode group. In contact with the upper edge portion of the insulating tape, the insulating tape may be damaged, and an internal short circuit may occur.
本発明の目的は、上記従来の課題を解決し、正極リー
ド板と、電極群中の負極板とが接触することにより発生
する内部短絡を確実に防止した円筒形二次電池を提供す
ることにある。An object of the present invention is to solve the above-mentioned conventional problems and to provide a cylindrical secondary battery that reliably prevents an internal short circuit caused by contact between a positive electrode lead plate and a negative electrode plate in an electrode group. is there.
課題を解決するための手段 本発明では、円形の絶縁板の両端あるいは一端を切断
し、かつ中心に正極のリード板の幅よりも小さい径の注
液用透孔を設けた絶縁板を電極群上に設置し、その上側
に絶縁リングを設置して内部短絡を確実に防止した円筒
形二次電池を提供するものである。Means for Solving the Problems According to the present invention, an insulating plate in which both ends or one end of a circular insulating plate are cut, and a liquid injection through hole having a diameter smaller than the width of the positive electrode lead plate is provided at the center is formed as an electrode group. An object of the present invention is to provide a cylindrical secondary battery which is installed on an upper side and an insulating ring is installed on an upper side thereof to reliably prevent an internal short circuit.
作用 この絶縁板と絶縁リングを併用することにより、絶縁
板を設置した後、その中心に設けた透孔を使っての電解
液の注入が容易であり、またこの透孔の直径は、正極の
リード板の幅よりも小さいため、正極リード板と電極群
中の負極板との接触による内部短絡及びケースと電極群
中の正極との接触による内部短絡を防止することができ
る。Function By using this insulating plate and the insulating ring together, it is easy to inject the electrolyte using the through hole provided in the center after the insulating plate is installed, and the diameter of the through hole is equal to that of the positive electrode. Since the width is smaller than the width of the lead plate, an internal short circuit due to contact between the positive electrode lead plate and the negative electrode plate in the electrode group and an internal short circuit due to contact between the case and the positive electrode in the electrode group can be prevented.
実施例 以下本発明の実施例について、図面を参照しながら説
明する。第１図，第２図では、本発明において用いる絶
縁板の一例を示す平面図であり、この絶縁板１は、中心
部に注液用の透孔２を備えている。第３図は、前記第１
図の絶縁板１と絶縁リング９を用いた円筒形二次電池の
縦断面図であり、第４図はその平面図である。電極群３
は正極板６負極板４とこれら極板間に介挿されたセパレ
ータ５とより構成されたもので、この電極群３上にはま
ず絶縁板１が、次に絶縁リング９が設置される。この電
極群３は、電池外装ケース11に収容され、外装ケース11
に溝入加工した後、正極リード板７の先端部が、封口板
10の裏面に溶接され、ケース11は、封口板10で閉塞され
る。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 and 2 are plan views showing an example of an insulating plate used in the present invention. The insulating plate 1 has a through hole 2 for liquid injection at the center. FIG.
FIG. 4 is a longitudinal sectional view of a cylindrical secondary battery using the insulating plate 1 and the insulating ring 9 shown in FIG. 4, and FIG. 4 is a plan view thereof. Electrode group 3
Is composed of a positive electrode plate 6, a negative electrode plate 4 and a separator 5 interposed between these electrode plates. On this electrode group 3, an insulating plate 1 is provided first, and then an insulating ring 9 is provided. The electrode group 3 is housed in the battery outer case 11, and the outer case 11
After the grooving process, the tip of the positive electrode lead plate 7 is
The case 11 is welded to the back surface of the case 10, and the case 11 is closed by the sealing plate 10.
以下に、この絶縁板と絶縁リングをニッケル−カドミ
ウム蓄電池に適用した例を説明する。Hereinafter, an example in which the insulating plate and the insulating ring are applied to a nickel-cadmium storage battery will be described.
本実施例で使用した容量1200mAhのＡサイズの電池
は、第６図に示すリード板７の幅１＝２〜4mmのアニー
ル処理された集電用のリード板を溶接した寸法が35×85
×0.75mmの正極板６と、35×120×0.65mmの負極板４
と、これらの極板間に介挿された寸法37×210×0.20mm
のセパレータ５を渦巻状に巻回し、電極群３を第３図の
ように形成した。この電極群上に、本発明の直径r1＝16
mm,幅ｗ＝8.0mm,厚み0.40mmで、中心の透孔の直径r2＝
２〜4mmのポリ塩化ビニル製の絶縁板１を設置し、その
上に直径16mm,厚み0.4mmのポリ塩化ビニル製絶縁リング
９を設置し、各10,000個の電池を作製した。その時発生
した内部短絡不良数を第１表に示した。この結果、絶縁
板１の透孔２の直径r2が、リード板７の幅１より小さい
時、内部短絡を防止できることがわかった。また、透孔
の直径r2が2mm以上であれば、電解液の注入は良好であ
り、4mmよりも大きくなるとリード板７と負極との接触
による内部短絡のおそれがでてくるので、直径は２〜4m
mが好ましい。The A-size battery having a capacity of 1200 mAh used in the present embodiment has a size of 35 × 85 obtained by welding an annealed current collecting lead plate having a width of 1 = 2 to 4 mm of the lead plate 7 shown in FIG.
× 0.75mm positive electrode plate 6 and 35 × 120 × 0.65mm negative electrode plate 4
And a dimension of 37 x 210 x 0.20 mm inserted between these plates
Was spirally wound to form an electrode group 3 as shown in FIG. On this electrode group, the diameter r 1 of the present invention is 16
mm, width w = 8.0mm, thickness 0.40mm, diameter of center through hole r 2 =
An insulating plate 1 made of polyvinyl chloride having a thickness of 2 to 4 mm was installed, and an insulating ring 9 made of polyvinyl chloride having a diameter of 16 mm and a thickness of 0.4 mm was installed thereon, thereby producing 10,000 batteries. Table 1 shows the number of internal short-circuit defects generated at that time. As a result, the diameter r 2 of the through hole 2 of the insulating plate 1, when less than the width 1 of the lead plate 7, was able to be prevented internal short circuit. If the diameter r 2 of the through hole is 2 mm or more, the injection of the electrolytic solution is good. If the diameter is larger than 4 mm, an internal short circuit may occur due to contact between the lead plate 7 and the negative electrode. 2-4m
m is preferred.
発明の効果 以上のように本発明の電池は、絶縁板の中心に正極リ
ード板の幅よりも小さい注液用の透孔を有しているた
め、絶縁板設置後の電解液の注入も良好であり、この絶
縁板と絶縁リングとを併用することにより、正極リード
板と電極群中の負極板との接触による内部短絡、及びケ
ースと電極群中の正極板の接触による内部短絡をそれぞ
れ確実に防止することができる。 Effect of the Invention As described above, since the battery of the present invention has a through hole for liquid injection smaller than the width of the positive electrode lead plate at the center of the insulating plate, the injection of the electrolyte after the insulating plate is installed is also good. By using the insulating plate and the insulating ring together, an internal short circuit due to the contact between the positive electrode lead plate and the negative electrode plate in the electrode group and an internal short circuit due to the contact between the case and the positive electrode plate in the electrode group are ensured. Can be prevented.
第１図，第２図は、本発明の実施例における絶縁板の平
面図、第３図は第１図の絶縁板を用いた円筒形二次電池
の縦断面図、第４図はその平面図、第５図は従来の円筒
形二次電池の縦断面図、第６図は用いた正極板の平面図
である。 １……絶縁板、２……透孔、３……電極群、４……負極
板、５……セパレータ、６……正極板、７……正極リー
ド板、８……絶縁テープ、９……絶縁リング、10……封
口板、11……外装ケース、12……リードわん曲部。1 and 2 are plan views of an insulating plate according to an embodiment of the present invention, FIG. 3 is a longitudinal sectional view of a cylindrical secondary battery using the insulating plate of FIG. 1, and FIG. FIG. 5 is a longitudinal sectional view of a conventional cylindrical secondary battery, and FIG. 6 is a plan view of a used positive electrode plate. DESCRIPTION OF SYMBOLS 1 ... Insulating plate, 2 ... Through-hole, 3 ... Electrode group, 4 ... Negative electrode plate, 5 ... Separator, 6 ... Positive electrode plate, 7 ... Positive electrode lead plate, 8 ... Insulating tape, 9 ... ... insulating ring, 10 ... sealing plate, 11 ... outer case, 12 ... lead curved part.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小澤 榮 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (72)発明者 松永 武彦 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 実開 昭60−188471（ＪＰ，Ｕ) 実開 昭62−103169（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01M 10/04 H01M 2/34──────────────────────────────────────────────────の Continued on the front page (72) Inventor Sakae Ozawa 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A 60-188471 (JP, U) JP-A 62-103169 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) H01M 10/04 H01M 2 / 34
Claims (1)
セパレータとを渦巻状に巻回した電極群と、この電極群
上に設置した透孔を有する絶縁板と、この絶縁板上に配
置した絶縁リングとを備えた円筒形二次電池において、
前記絶縁板は、円形の絶縁板の両端あるいは一端を切断
し、かつ中心に注液用の透孔を設けたものであって、正
極のリード板の幅よりも前記透孔の直径が小さいことを
特徴とする円筒形二次電池。1. An electrode group in which a positive / negative electrode plate and a separator interposed between these electrode plates are spirally wound, an insulating plate having a through hole provided on the electrode group, A cylindrical secondary battery comprising: an insulating ring disposed on a plate;
The insulating plate is formed by cutting both ends or one end of a circular insulating plate and providing a through hole for liquid injection at the center, and the diameter of the through hole is smaller than the width of the lead plate of the positive electrode. A cylindrical secondary battery characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1274114A JP2847811B2 (en) | 1989-10-20 | 1989-10-20 | Cylindrical secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1274114A JP2847811B2 (en) | 1989-10-20 | 1989-10-20 | Cylindrical secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03134955A JPH03134955A (en) | 1991-06-07 |
| JP2847811B2 true JP2847811B2 (en) | 1999-01-20 |
Family
ID=17537209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1274114A Expired - Lifetime JP2847811B2 (en) | 1989-10-20 | 1989-10-20 | Cylindrical secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2847811B2 (en) |
-
1989
- 1989-10-20 JP JP1274114A patent/JP2847811B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03134955A (en) | 1991-06-07 |
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| EXPY | Cancellation because of completion of term |