JPS5971252A - Alkaline battery - Google Patents
Alkaline batteryInfo
- Publication number
- JPS5971252A JPS5971252A JP57180217A JP18021782A JPS5971252A JP S5971252 A JPS5971252 A JP S5971252A JP 57180217 A JP57180217 A JP 57180217A JP 18021782 A JP18021782 A JP 18021782A JP S5971252 A JPS5971252 A JP S5971252A
- Authority
- JP
- Japan
- Prior art keywords
- sealing body
- negative electrode
- current collector
- cylindrical
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 229920003002 synthetic resin Polymers 0.000 claims description 9
- 239000000057 synthetic resin Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 8
- 229920005989 resin Polymers 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 239000004698 Polyethylene Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- -1 polyethylene Polymers 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 abstract 3
- 238000005859 coupling reaction Methods 0.000 abstract 3
- 230000008602 contraction Effects 0.000 abstract 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000011345 viscous material 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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
-
- 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、アルカリ電池の耐漏液構造に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a leak-proof structure for alkaline batteries.
従来例の構成とその問題点
従来、電池の合成樹脂製封口体は殆んど射出成形によっ
て製造されているが、融解した合成樹脂２へ一ジ
を金型内に射出し冷却するときに合成樹脂は若干収縮す
る。普通、この収縮分を見戦して成形金型を設計製作す
るが、品物の形状が複雑となった場合、収縮度合（ｆけ
）も部分的に異なり、完全に目的とする品物を得られな
いことがある。Structure of conventional examples and their problems Traditionally, synthetic resin sealing bodies for batteries have been mostly manufactured by injection molding, but when a single layer of molten synthetic resin 2 is injected into a mold and cooled, the synthetic resin is The resin will shrink slightly. Normally, molding molds are designed and manufactured with this shrinkage in mind, but when the shape of the product becomes complex, the degree of shrinkage (fake) may differ in some parts, making it difficult to obtain the desired product. Sometimes there isn't.
アルカリ電池における合成樹脂製封口体の存在は、耐漏
液に大きく貢献しており、漏液経路から見て負極集電子
と接触する面の接面の度合が耐漏液性能のポイントとな
っている。第１図に示すように従来の合成樹脂製封口体
５の形状においては、冷却時の収縮（ひけ）による変形
が負極集電子７との接触面に見られ、負極集電子と合成
樹脂製封口体との間に空隙部１４を生じて耐漏液性能が
悪くなるという問題点があった。The presence of a synthetic resin sealing body in an alkaline battery greatly contributes to leakage resistance, and the degree of contact between the surface that contacts the negative electrode current collector when viewed from the leakage path is the key to leakage resistance. As shown in FIG. 1, in the shape of the conventional synthetic resin sealing body 5, deformation due to shrinkage during cooling is seen on the contact surface with the negative electrode current collector 7, and the negative electrode current collector and the synthetic resin sealing body 5 are deformed due to shrinkage during cooling. There is a problem in that a gap 14 is formed between the body and the liquid leakage resistance is deteriorated.
発明の目的
本発明は、合成樹脂製封口体の形状を変更することによ
り、アルカリ電池の耐漏液性能を向上させることを目的
とする。OBJECTS OF THE INVENTION An object of the present invention is to improve the leakage resistance of alkaline batteries by changing the shape of a synthetic resin sealing body.
発明の構成
本発明は、前記目的を達成するために、合成樹３ ｌ−
７’
脂製封口体の負極集電子をとりかこむ円筒部と環状薄膜
部との連結部に環状の肉盛りを形成したことを特徴とし
、これにより射出成形時の樹脂の流れに淀みを生じさせ
、この淀みにより、封口体冷却時における負極集電子と
謬触する面の収縮（ひけ）による変形を抑制したもので
ある。Structure of the Invention In order to achieve the above object, the present invention provides a synthetic tree 3 l-
7' It is characterized by forming an annular build-up at the connection part between the cylindrical part surrounding the negative electrode current collector of the resin sealing body and the annular thin film part, which causes stagnation in the flow of resin during injection molding. This stagnation suppresses deformation due to shrinkage of the surface that comes into contact with the negative electrode current collector during cooling of the sealing body.
実施例の説明 以下、本１１ｗ’ｄをその実施例に基づき説明する。Description of examples The book 11w'd will be explained below based on its examples.
第２Ｍは本発明の実施例における円筒形アルカリマンガ
ン電池を示す。図中１は正極缶で、その内部には三稜化
マンガンと黒鉛とからなる円筒形の成形正極合剤２が配
置されていて、その内側にか性カリ、粘性物質および氷
化亜鉛粉末からなるゲル状負極３がセパレータ４を介し
て挿入されている。No. 2M shows a cylindrical alkaline manganese battery in an embodiment of the present invention. In the figure, 1 is a positive electrode can, inside of which a cylindrical molded positive electrode mixture 2 made of manganese trigonide and graphite is arranged, and inside it is made of caustic potash, viscous substance and frozen zinc powder. A gel-like negative electrode 3 is inserted through a separator 4.
５は正極缶１の開口を封口する比較的軟質のポリエチレ
ン等からなる合成樹脂製封口体、６はその外側に配した
負極底板、７は負極集電子である。5 is a synthetic resin sealing body made of relatively soft polyethylene or the like for sealing the opening of the positive electrode can 1, 6 is a negative electrode bottom plate disposed on the outside thereof, and 7 is a negative electrode current collector.
封口体５は、缶１の開口部と負極底板６の周縁鍔部によ
って挾持された断面り字状部５ａ、負極集電子７をとり
かこむ円筒部５ｂ、５ａと５ｂとを連結する環状の薄肉
部５ｃ、および円筒部５ｂと環状薄肉部５Ｃとの連結部
に設けた環状の肉盛り部５ｄとからなる。更に封口体５
の断面り字状部５ａの負極底板６の周縁鍔部に接触する
側にはガス逸散のための溝５ｅが数箇所放射状に設けら
れている。８は内圧増加時に防爆のため、封口体５の薄
肉部５ｃを破裂させるエツジ部８ａを一体に設けた金匡
製刃突起である。The sealing body 5 includes a cross-sectional portion 5a sandwiched between the opening of the can 1 and the peripheral flange of the negative electrode bottom plate 6, a cylindrical portion 5b surrounding the negative electrode current collector 7, and an annular thin wall connecting 5a and 5b. It consists of a portion 5c and an annular built-up portion 5d provided at the connection portion between the cylindrical portion 5b and the annular thin portion 5C. Furthermore, the sealing body 5
Grooves 5e for gas dissipation are radially provided at several locations on the side of the cross-sectional angular section 5a that contacts the peripheral edge flange of the negative electrode bottom plate 6. Reference numeral 8 denotes a blade protrusion made of a metal casing, which is integrally provided with an edge portion 8a that ruptures the thin wall portion 5c of the sealing body 5 for explosion protection when the internal pressure increases.
９は、ガス逸散用の切欠部９ａを設けた正極端子キャッ
プ、１０はポリ塩化ビニルなどの熱収縮性樹脂チューブ
、１１．１２は絶縁リング、１３は外装缶である。9 is a positive terminal cap provided with a notch 9a for gas dissipation, 10 is a heat-shrinkable resin tube such as polyvinyl chloride, 11.12 is an insulating ring, and 13 is an outer can.
第１図は、前述した従来の封口体５に負極集電子７を挿
入したときの縦断面図であり、負極集電子７と封口体５
の円筒部５ｂとの間に空隙部１４が見られるのに対し、
第３図に示すように本発明の封口体５では、環状の肉盛
り部５ｄで樹脂の流れに淀みを生じて、冷却時に円筒部
５ｂに変形を招くことはなく、従って円筒部の負集電子
７との接触面に空隙部は見られない。FIG. 1 is a longitudinal cross-sectional view when the negative electrode current collector 7 is inserted into the conventional sealing body 5 described above, and the negative electrode current collector 7 and the sealing body 5 are
A gap 14 can be seen between the cylindrical part 5b,
As shown in FIG. 3, in the sealing body 5 of the present invention, there is no stagnation in the flow of the resin at the annular built-up portion 5d, which causes deformation of the cylindrical portion 5b during cooling. No voids are seen on the contact surface with the electrons 7.
尚、第１図、第３図に示す封口体中の矢印は、射出成形
時の樹脂の流れを示す。Note that the arrows in the sealing body shown in FIGS. 1 and 3 indicate the flow of resin during injection molding.
発明の効果
このような本発明におけるアルカリマンガン電池と、封
口体に第１図に示す従来のものを使用した同様のアルカ
リマンガン電池との耐漏液性能（漏液発生個数）の比較
を行々った。その結果を次表に示す。Effects of the Invention We compared the leakage resistance performance (number of cells leaking) between the alkaline manganese battery according to the present invention and a similar alkaline manganese battery using the conventional one shown in Fig. 1 for the sealing body. Ta. The results are shown in the table below.
この表に示すように、本発明によるアルカリマンガン電
池は、従来のものに比べ、耐漏液性能が著しく向上して
いる。As shown in this table, the alkaline manganese battery according to the present invention has significantly improved leakage resistance compared to the conventional one.
第１図は従来の封口体に負極集電子を挿入した６ｔ″−
ジ
ときの縦断面図、第２図は本発明の実施例における円筒
形アルカリ電池を示す半裁側面図、第３図は本発明の封
口体に負極集電子を挿入したときの縦断面図である。
１・・・・・・正極缶、２・・・・・・正極合剤、３・
・・・・・負極、４・・・・・・セパレータ、５・・・
・・・封口体、５ａ・・・・・・断面り字状部、５ｂ・
・・・・・円筒部、５Ｃ・・・・・・薄肉部、５ｄ・・
・・・・環状の肉盛り部、５ｅ・・・・・・ガス逸散溝
、６・・・・・・負極底板、７・・・・・・負極集電子
、８・・・・・・刃突起、８ａ・・・・・・エツジ部、
９・・・・・・キャップ、９ａ・・・・・・切欠部、１
ｏ・・・・・・熱収縮性樹脂チー−ブ、１１，１２・・
・・・・絶縁リング、１３・・・・・・外装缶、１４・
・・・・・空隙部０
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第２
図
第３図Figure 1 shows a 6t″-
FIG. 2 is a half-cut side view showing a cylindrical alkaline battery according to an embodiment of the present invention, and FIG. 3 is a vertical cross-sectional view when a negative electrode current collector is inserted into the sealing body of the present invention. . 1...Positive electrode can, 2...Positive electrode mixture, 3.
... Negative electrode, 4 ... Separator, 5 ...
...Sealing body, 5a...Cross-shaped section, 5b.
...Cylindrical part, 5C...Thin wall part, 5d...
...Annular built-up part, 5e...Gas dissipation groove, 6...Negative electrode bottom plate, 7...Negative electrode current collector, 8... Blade protrusion, 8a...edge part,
9...Cap, 9a...Notch, 1
o...Heat-shrinkable resin tube, 11, 12...
... Insulation ring, 13 ... Exterior can, 14.
...Gap 0 Name of agent Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3
Claims (1)
る合成樹脂製封口体と、この封口体の外側に配設した負
極底板とを備えたアルカリ電池であって、前記封口体が
負極集電子をとりかこむ円筒部と、負極底板の周縁鍔部
と正極缶開口部とによって挾持された断面り字状部、お
よび前記円筒部端面と断面り字状部とを連結する環状薄
膜部とを有し、前記円筒部と環状薄膜部との連結部に環
状の肉盛りを形成したアルカリ電池。An alkaline battery comprising a positive electrode can housing a power generation element, a synthetic resin sealing body sealing an opening of the positive electrode can, and a negative electrode bottom plate disposed outside the sealing body, the sealing body being a negative electrode. a cylindrical part surrounding the current collector; a slit-shaped section held between the peripheral flange of the negative electrode bottom plate and the opening of the positive electrode can; and an annular thin film part that connects the end surface of the cylindrical part and the slit-shaped section; An alkaline battery comprising: an annular build-up formed at a connecting portion between the cylindrical portion and the annular thin film portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57180217A JPS5971252A (en) | 1982-10-13 | 1982-10-13 | Alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57180217A JPS5971252A (en) | 1982-10-13 | 1982-10-13 | Alkaline battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5971252A true JPS5971252A (en) | 1984-04-21 |
| JPH0114669B2 JPH0114669B2 (en) | 1989-03-13 |
Family
ID=16079446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57180217A Granted JPS5971252A (en) | 1982-10-13 | 1982-10-13 | Alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5971252A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0449450U (en) * | 1990-08-30 | 1992-04-27 |
-
1982
- 1982-10-13 JP JP57180217A patent/JPS5971252A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0449450U (en) * | 1990-08-30 | 1992-04-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0114669B2 (en) | 1989-03-13 |
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