JPH0152860B2 - - Google Patents
Info
- Publication number
- JPH0152860B2 JPH0152860B2 JP55051948A JP5194880A JPH0152860B2 JP H0152860 B2 JPH0152860 B2 JP H0152860B2 JP 55051948 A JP55051948 A JP 55051948A JP 5194880 A JP5194880 A JP 5194880A JP H0152860 B2 JPH0152860 B2 JP H0152860B2
- Authority
- JP
- Japan
- Prior art keywords
- sealing body
- lead rod
- cathode lead
- anode
- 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.)
- Expired
Links
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
- H01M50/50—Current conducting connections for cells or 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
- 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)
- Connection Of Batteries Or Terminals (AREA)
Description
この発明は筒型アルカリ電池の改良に係り、陰
極リード棒と陰極端子板との接触不良の発生を防
止して電池の抵抗増大を抑制することを目的とす
る。
従来、筒型アルカリ電池の封口に際しては、発
電要素を内填した陽極缶の開口端に合成樹脂製の
封口体を当接させ、陽極缶の開口縁を封口体に食
い込ませ、樹脂チユーブで包被したのち、外装缶
を上下から軸方向に締め付けて陽極缶を封口する
封口方法が採用されていたが、この方法では必ら
ずしも高度な耐漏液性が得られないため、最近で
は、陽極缶の開口部に陰極リード棒および環状支
持体を挿着した封口体を挿入し、陽極缶の開口端
部を半径方向に締め付け封口体の周縁部に密着さ
せて封口するという封口構造が採用されるように
なつてきた。
このような封口構造を採用した電池では、陰極
リード棒が封口体からぬけでるのを防止するため
に、板バネを陰極リード棒と陰極端子板との間に
配設し、板バネの中央部で陰極リード棒の頭部を
押圧しているが、長期保存中にこの陰極リード棒
と板バネとの接面に酸化被膜が生成し、また電池
内における気体中の水分の結露により、局部電池
が発生して接点部が腐食し接触抵抗が増大する。
そこで、これを解消するため、この接面にグリ
ースを塗布することが提案されているが、長期保
存によりグリースが分解して接触抵抗が増大して
接触不良を引きおこす。とくに高温下での保存に
おいてはグリースの分解が促進される。
この発明はそのような事情に鑑みてなされたも
のであり、陰極リード棒と板バネとの接面に導電
剤を含有させたグリースを介在させることによ
り、該接面の腐食を防止し、かつたとえグリース
が分解されることがあつてもグリース中に含有さ
せた導電剤により陰極リード棒と板バネとの電気
的接触が保たれるようにしたものである。
この発明において、グリースは鉱油に金属セツ
ケンを混和して得られる通常のグリースを使用す
ればよく、またグリースに含有させる導電剤とし
ては、りん状黒鉛、アセチレンブラツク、カーボ
ンブラツク、銀粉末などが使用され、とくにりん
状黒鉛が好適である。そして、導電剤の含有量と
しては、グリース100部（重量部、以下同様）に
対して５〜20部にするのが好ましい。
導電剤を含有させたグリースの陰極リード棒と
板バネとの接面への介在のさせ方としては、導電
剤を含有させたグリースを陰極リード棒の頭部に
塗布してもよいし、板バネに塗布してもよく、ま
た両方に塗布してもよい。
つぎに、この発明の実施例を図面とともに説明
する。
第１図はこの発明の筒型アルカリ電池の一実施
例を示す半截概略縦断面図、第２図はその封口部
分の拡大図である。図面において１は二酸化マン
ガンを主体とする陽極合剤、２はアマルガム化し
た亜鉛粉末とアルカリ電解液およびカルボキシメ
チルセルロースなどのゲル化分散剤とからなるペ
ースト状の陰極剤、３は陽極合剤１と陰極剤２と
を隔離するピニロン−レーヨン混抄紙からなるセ
パレータ、４は陰極リード棒、５は陽極缶、６は
陽極缶５の開口部を封口する合成樹脂製の封口体
であり、この封口体６は透孔６５を中心としその
周囲に形成された厚肉部６１と、陽極缶５の開口
端部の内周面に接する周縁部６２と、薄肉部を有
する平面部６３とＶ字状部６４からなり前記厚肉
部６１と周縁部６２とを連結する連結部とで構成
され、前記透孔６５には真鍮製の陰極リード棒４
の軸部が挿着され、また厚肉部６１と周縁部６２
との間には通気孔７１を有する鉄製の環状支持体
７が挿入されて、この封口体６には陰極リード棒
４と環状支持体７が挿着されている。そして、陽
極缶５の内部には前記の陽極缶１、陰極剤２、セ
パレータ３などの発電要素が充填され、この陽極
缶５の開口部には上記のように陰極リード棒４お
よび環状支持体７を挿着した封口体６が挿入さ
れ、陽極缶５の開口端近傍には封口体６を受ける
ための内部側に底部を有する溝５１が設けられ、
該溝５１の底壁上記封口体６の周縁部６２の一端
が当接し、陽極缶５の開口端部、つまり上記溝５
１から先の部分が半径方向に締め付けられて封口
体６の周縁部６２の外周面に密着することによつ
て、陽極缶５の開口部が封口されている。そし
て、この陽極缶５の締付部５２の外径は該締付部
以外の部分５３の外径より小さい構成となつてい
る。なお８は陰極リード棒４と陰極端子板９との
間に配設された板バネであり、この板バネ８はニ
ツケルメツキを施した鉄板でつくられ、その中心
部で陰極リード棒４の頭部４１を軸方向に押圧
し、その周縁部でニツケルメツキを施した鉄板で
形成された陰極端子板９に接している。陰極リー
ド棒４の頭部４１はその軸部より径大につくら
れ、頭部４１の下面は水平状に形成され、該下面
が封口体６の厚肉部６１の水平上面に液状パツキ
ング材１７を介して接している。なお、陰極リー
ド棒４の頭部４１の下面の直径は厚肉部６１の上
面の径より若干大きい。
そして陰極リード棒４の頭部４１と板バネ８と
の接面には、導電剤を含有させたグリース１８が
介在している。なお１０は陽極缶５の締付部５２
と陰極端子板９とを絶縁する紙リング、１１，１
２は樹脂チユーブ、１３は陽極端子板、１４は外
装缶、１５は樹脂リング、１６は陽極缶５の内面
に塗布されたアスフアルトコンパウンド（ブロン
アスフアルトとプロセスオイルとの混合物）、樹
脂ポリアミド、フツ素系オイルなどの液状パツキ
ング材であり、１７は陰極リード棒４周囲の液状
パツキング材である。
このような構成のこの発明の電池Ａと他の構成
からなる電池ＢおよびＣの各1000個ずつについて
60℃、相対湿度90％の雰囲気中で40日間保存し、
保存後の内部抵抗を測定した結果を第１表に示
す。なお、この発明の電池Ａは陰極リード棒の頭
部にグリース100部に対してりん状黒鉛を10部含
有させた導電剤入りグリースを塗布して、陰極リ
ード棒の頭部と板バネとの接面に導電剤を含有さ
せたグリースを介在させたものであり、電池Ｂは
陰極リード棒の頭部にグリースを塗布し、陰極リ
ード棒の頭部と板バネとの接面にグリースを介在
させたもので、電池Ｃは陰極リード棒の頭部に何
も塗布せず、したがつて陰極リード棒の頭部と板
バネとの接面に何も介在させなかつたものであ
る。電池はいずれもLR ６型である。内部抵抗は
1kHzの交流法で測定され、0.25Ω以上を不良と判
断し、第１表には不良個数で示されている。
The present invention relates to an improvement of a cylindrical alkaline battery, and an object of the present invention is to prevent the occurrence of poor contact between a cathode lead rod and a cathode terminal plate, and to suppress an increase in battery resistance. Conventionally, when sealing a cylindrical alkaline battery, a synthetic resin sealing body was brought into contact with the open end of the anode can containing the power generation element, the opening edge of the anode can was bitten into the sealing body, and the anode can was wrapped with a resin tube. The conventional method used was to seal the anode can by tightening the outer can axially from the top and bottom after covering the anode can, but this method does not necessarily provide a high level of leakage resistance, so recently, A sealing structure is adopted in which a sealing body with a cathode lead rod and annular support inserted is inserted into the opening of the anode can, and the open end of the anode can is tightened in the radial direction to tightly contact the periphery of the sealing body. It's starting to be done. In batteries with such a sealed structure, in order to prevent the cathode lead rod from coming out of the sealing body, a leaf spring is placed between the cathode lead rod and the cathode terminal plate, and the central part of the leaf spring is placed between the cathode lead rod and the cathode terminal plate. However, during long-term storage, an oxide film forms on the contact surface between the cathode lead rod and the leaf spring, and condensation of moisture in the gas inside the battery causes local battery damage. occurs, the contact portion corrodes, and contact resistance increases. To solve this problem, it has been proposed to apply grease to this contact surface, but the grease decomposes during long-term storage, increasing contact resistance and causing poor contact. Particularly when stored at high temperatures, the decomposition of grease is accelerated. This invention was made in view of such circumstances, and by interposing grease containing a conductive agent on the contact surface between the cathode lead rod and the plate spring, corrosion of the contact surface is prevented and Even if the grease is decomposed, the conductive agent contained in the grease maintains electrical contact between the cathode lead rod and the leaf spring. In this invention, the grease may be a normal grease obtained by mixing mineral oil with metal soap, and the conductive agent contained in the grease may be phosphorous graphite, acetylene black, carbon black, silver powder, etc. Among them, phosphorous graphite is particularly suitable. The content of the conductive agent is preferably 5 to 20 parts per 100 parts (by weight, hereinafter the same) of the grease. Grease containing a conductive agent may be applied to the contact surface between the cathode lead rod and the plate spring, by applying grease containing a conductive agent to the head of the cathode lead rod, or by applying the grease containing a conductive agent to the head of the cathode lead rod. It may be applied to the spring or both. Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic half-cut vertical cross-sectional view showing an embodiment of the cylindrical alkaline battery of the present invention, and FIG. 2 is an enlarged view of the sealed portion thereof. In the drawing, 1 is an anode mixture mainly composed of manganese dioxide, 2 is a paste-like cathode material consisting of amalgamated zinc powder, an alkaline electrolyte, and a gelling dispersant such as carboxymethyl cellulose, and 3 is an anode mixture 1. A separator made of Pinilon-rayon mixed paper separates the cathode agent 2 from the cathode agent 2; 4 is a cathode lead rod; 5 is an anode can; 6 is a synthetic resin sealing body for sealing the opening of the anode can 5; Reference numeral 6 denotes a thick part 61 formed around the through hole 65, a peripheral part 62 in contact with the inner peripheral surface of the open end of the anode can 5, a flat part 63 having a thin part, and a V-shaped part. 64, and a connecting part that connects the thick part 61 and the peripheral part 62, and the through hole 65 has a brass cathode lead rod 4.
The shaft portion of the thick portion 61 and the peripheral portion 62 are inserted.
An annular support body 7 made of iron having a ventilation hole 71 is inserted between the two, and the cathode lead rod 4 and the annular support body 7 are inserted into this sealing body 6. The inside of the anode can 5 is filled with power generating elements such as the anode can 1, the cathode agent 2, and the separator 3, and the opening of the anode can 5 is filled with the cathode lead rod 4 and the annular support as described above. 7 is inserted into the sealing body 6, and a groove 51 having a bottom on the inside side for receiving the sealing body 6 is provided near the open end of the anode can 5.
One end of the peripheral edge 62 of the sealing body 6 contacts the bottom wall of the groove 51, and the open end of the anode can 5, that is, the groove 5
The opening of the anode can 5 is sealed by radially tightening the portion starting from 1 and coming into close contact with the outer peripheral surface of the peripheral edge 62 of the sealing body 6. The outer diameter of the tightening portion 52 of the anode can 5 is smaller than the outer diameter of the portion 53 other than the tightening portion. Reference numeral 8 denotes a leaf spring disposed between the cathode lead rod 4 and the cathode terminal plate 9. This leaf spring 8 is made of a nickel-plated iron plate, and the head of the cathode lead rod 4 is connected to the center of the leaf spring 8. 41 is pressed in the axial direction, and its peripheral edge is in contact with the cathode terminal plate 9 formed of a nickel-plated iron plate. The head 41 of the cathode lead rod 4 is made larger in diameter than its shaft, and the lower surface of the head 41 is formed horizontally. are in contact through. Note that the diameter of the lower surface of the head 41 of the cathode lead rod 4 is slightly larger than the diameter of the upper surface of the thick portion 61. Grease 18 containing a conductive agent is interposed on the contact surface between the head 41 of the cathode lead rod 4 and the leaf spring 8. Note that 10 is a tightening part 52 of the anode can 5.
and a paper ring 11,1 for insulating the cathode terminal plate 9.
2 is a resin tube, 13 is an anode terminal plate, 14 is an outer can, 15 is a resin ring, and 16 is an asphalt compound (a mixture of blown asphalt and process oil) applied to the inner surface of the anode can 5, resin polyamide, and fluorine. 17 is a liquid packing material around the cathode lead rod 4. Regarding 1000 each of the battery A of this invention having such a configuration and the batteries B and C having other configurations
Stored for 40 days at 60℃ and 90% relative humidity.
Table 1 shows the results of measuring the internal resistance after storage. In addition, in battery A of the present invention, grease containing a conductive agent containing 10 parts of phosphorous graphite per 100 parts of grease is applied to the head of the cathode lead rod, so that the head of the cathode lead rod and the leaf spring are connected. Grease containing a conductive agent is applied to the contact surface, and in battery B, grease is applied to the head of the cathode lead rod, and grease is applied to the contact surface between the head of the cathode lead rod and the leaf spring. In Battery C, nothing was coated on the head of the cathode lead rod, and therefore nothing was interposed between the head of the cathode lead rod and the leaf spring. All batteries are LR6 type. The internal resistance is
Measured using the 1kHz alternating current method, a resistance of 0.25Ω or more is considered defective, and Table 1 shows the number of defective items.
【表】
第１表に示すように、この発明の電池Ａは他の
電池ＢおよびＣに比べて内部抵抗の不良個数が少
ない。[Table] As shown in Table 1, the battery A of the present invention has a smaller number of internal resistance defects than the other batteries B and C.
第１図はこの発明の筒型アルカリ電池の一実施
例を示す半截概略縦断面図、第２図はその封口部
分の拡大図である。
１……陽極合剤、２……陰極剤、３……セパレ
ータ、４……陰極リード棒、４１……頭部、５…
…陽極缶、６……封口体、６１……厚肉部、６２
……周縁部、６３……平面部、６４……Ｖ字状
部、６５……透孔、７……環状支持体、７１……
通気孔、８……板バネ、９……陰極端子板、１８
……導電剤を含有させたグリース。
FIG. 1 is a schematic half-cut vertical cross-sectional view showing an embodiment of the cylindrical alkaline battery of the present invention, and FIG. 2 is an enlarged view of the sealed portion thereof. 1... Anode mixture, 2... Cathode agent, 3... Separator, 4... Cathode lead rod, 41... Head, 5...
... Anode can, 6 ... Sealing body, 61 ... Thick wall part, 62
... Peripheral part, 63 ... Plane part, 64 ... V-shaped part, 65 ... Through hole, 7 ... Annular support, 71 ...
Ventilation hole, 8...Plate spring, 9...Cathode terminal plate, 18
...Grease containing a conductive agent.
Claims (1)
と、環状支持体７と、封口体６と、陰極端子板９
と、板バネ８と、導電剤を含有させたグリース１
８とを有し、 上記陰極リード棒４は、その軸部より径大な頭
部４１を有し、 上記封口体６は、透孔６５と、厚肉部６１と、
連結部と、周縁部６２とを有し、 上記封口体６の連結部は、薄肉部を有する平面
部６３とＶ字状部６４とからなり、上記厚肉部６
１と周縁部６２とを連結しており、 上記環状支持体７は、環状体からなり、通気孔
７１と、封口体６の厚肉部６１の外周面に接触す
る内周面と、封口体６の周縁部６２の内周面に接
触する外周面を有し、 上記発電要素は、陽極缶５内に充填され、 上記環状支持体７は、封口体６の厚肉部６１と
周縁部６２との間に挿入され、封口体６の連結部
の上部に配置し、 上記陰極リード棒４の軸部は、封口体６の透孔
６５に挿入され、 上記陽極缶５の開口部は、上記のように陰極リ
ード棒４および環状支持体７を挿着した封口体６
を挿入し、陽極缶５の開口端部を半径方向に締め
付けて封口体６の周縁部６２の外周面に密着させ
ることにより封口され、 上記板バネ８は、陰極リード棒４と陰極端子板
９との間に配設されて、陰極リード棒４の頭部４
１を軸方向下方に押圧し、 上記導電剤を含有させたグリース１８は、陰極
リード棒４の頭部４１と板バネ８との接面に介在
していることを特徴とする、 筒型アルカリ電池。[Claims] 1 Power generation element, anode can 5, and cathode lead rod 4
, an annular support body 7 , a sealing body 6 , and a cathode terminal plate 9
, a plate spring 8 , and grease 1 containing a conductive agent
8, the cathode lead rod 4 has a head 41 with a larger diameter than its shaft, and the sealing body 6 has a through hole 65, a thick wall portion 61,
The connecting portion of the sealing body 6 includes a flat portion 63 having a thin wall portion and a V-shaped portion 64, and the thick wall portion 6
1 and a peripheral portion 62, and the annular support 7 is made of an annular body, and includes a ventilation hole 71, an inner circumferential surface that contacts the outer circumferential surface of the thick portion 61 of the sealing body 6, and a peripheral portion 62 of the sealing body. The annular support 7 has an outer circumferential surface in contact with the inner circumferential surface of the peripheral edge part 62 of the sealing body 6, and the power generating element is filled in the anode can 5. The shaft of the cathode lead rod 4 is inserted into the through hole 65 of the sealing body 6, and the opening of the anode can 5 is placed above the connection part of the sealing body 6. A sealing body 6 into which a cathode lead rod 4 and an annular support 7 are inserted as shown in FIG.
is inserted, and the open end of the anode can 5 is tightened in the radial direction to make it tightly contact the outer circumferential surface of the peripheral edge 62 of the sealing body 6. and the head 4 of the cathode lead rod 4.
1 is pressed downward in the axial direction, and the grease 18 containing the conductive agent is interposed on the contact surface between the head 41 of the cathode lead rod 4 and the leaf spring 8. battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5194880A JPS56149766A (en) | 1980-04-19 | 1980-04-19 | Cylindrical alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5194880A JPS56149766A (en) | 1980-04-19 | 1980-04-19 | Cylindrical alkaline battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56149766A JPS56149766A (en) | 1981-11-19 |
| JPH0152860B2 true JPH0152860B2 (en) | 1989-11-10 |
Family
ID=12901092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5194880A Granted JPS56149766A (en) | 1980-04-19 | 1980-04-19 | Cylindrical alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56149766A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010538435A (en) * | 2007-09-06 | 2010-12-09 | プラーン | Batteries consisting of multiple cells positioned and interconnected without welding |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4517615Y1 (en) * | 1967-02-06 | 1970-07-20 |
-
1980
- 1980-04-19 JP JP5194880A patent/JPS56149766A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010538435A (en) * | 2007-09-06 | 2010-12-09 | プラーン | Batteries consisting of multiple cells positioned and interconnected without welding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56149766A (en) | 1981-11-19 |
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