JPH0298037A - Alkaline dry battery - Google Patents
Alkaline dry batteryInfo
- Publication number
- JPH0298037A JPH0298037A JP63250195A JP25019588A JPH0298037A JP H0298037 A JPH0298037 A JP H0298037A JP 63250195 A JP63250195 A JP 63250195A JP 25019588 A JP25019588 A JP 25019588A JP H0298037 A JPH0298037 A JP H0298037A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- battery
- wall
- conductive film
- case
- 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
- 239000000203 mixture Substances 0.000 claims description 21
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 239000003575 carbonaceous material Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 abstract description 16
- 239000011149 active material Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000007774 positive electrode material Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000280258 Dyschoriste linearis Species 0.000 description 1
- 229920004449 Halon® Polymers 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002847 impedance measurement Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/1243—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the internal coating on the casing
-
- 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
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/133—Thickness
-
- 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)
- Inorganic Chemistry (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、二酸化マンガンと炭素材を主構成材料として
用いた正極合剤を、金属製正極ケース内に密着させて収
納するアルカリ乾電池において、正極ケース内壁と正極
活物質との接触性を向上させると同時に、正極ケースと
正極合剤とのすきまに電解液を適量保持させるように工
夫した電池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 an alkaline dry battery in which a positive electrode mixture mainly composed of manganese dioxide and carbon is housed in a metal positive electrode case. The present invention relates to a battery structure that improves the contact between the inner wall and the positive electrode active material and at the same time retains an appropriate amount of electrolyte in the gap between the positive electrode case and the positive electrode mixture.
従来の技術
従来、この種のアルカリ乾電池は、第４図に示すような
構成であった。第４図において、２１は二酸化マンガン
と黒鉛を主構成材料とする正極合剤、２２はゲル化され
た亜鉛粉末の負極、２３はセパレータ、２４はゲル負極
集電棒、２６は正極キャップである。２６が金属製正極
ケース、２８は電池の外装缶、２９は樹脂封口体、３０
は底板である。2. Description of the Related Art Conventionally, this type of alkaline dry cell has had a structure as shown in FIG. In FIG. 4, 21 is a positive electrode mixture mainly composed of manganese dioxide and graphite, 22 is a negative electrode made of gelled zinc powder, 23 is a separator, 24 is a gel negative electrode current collector rod, and 26 is a positive electrode cap. 26 is a metal positive electrode case, 28 is a battery exterior can, 29 is a resin sealing body, 30
is the bottom plate.
このような場合でも、正極活物質と金属製正極ケース内
壁との電気的接触は比較的良好であるが、更に内部抵抗
を低下させるために正極ケース内壁にニッケルメッキを
施したもの、または特公昭４２−２５１４５号公報に見
られるように正極ケ−ス内壁に黒鉛などの導電性被膜を
形成するといった試みがなされてきた。Even in such cases, the electrical contact between the positive electrode active material and the inner wall of the metal positive electrode case is relatively good; As seen in Japanese Patent No. 42-25145, attempts have been made to form a conductive film such as graphite on the inner wall of the positive electrode case.
発明が解決しようとする課題
アルカリ乾電池において、電解液の正極活物質への供給
が強負荷放電に非常に影響を及ぼす。つまり電解液の供
給が良好なほど強負荷放電において電池性能が向上する
ことが知られている。しかしながら従来の電池構成では
正極ケース内壁にニッケルメッキを施したり、導電性被
膜を形成させ正極活物質外周全体と非常に密に接触させ
る構造の場合においては、電解液の供給は電池の中心方
向からのみ供給され、正極活物質の外周側からはほとん
ど供給されない。そのために、強負荷放電の場合、電解
液の供給の遅れによる分極が起こり、結果として放電中
の電池維持電圧が低いといった課題があった。Problems to be Solved by the Invention In alkaline dry batteries, the supply of electrolyte to the positive electrode active material greatly affects heavy load discharge. In other words, it is known that the better the supply of electrolyte, the better the battery performance during heavy load discharge. However, in conventional battery configurations, when the inner wall of the positive electrode case is nickel-plated or a conductive film is formed to make very close contact with the entire outer periphery of the positive electrode active material, the electrolyte is supplied from the center of the battery. and almost no supply from the outer circumferential side of the positive electrode active material. Therefore, in the case of heavy load discharge, polarization occurs due to a delay in the supply of electrolyte, resulting in a problem that the battery maintenance voltage during discharge is low.
本発明はこのような従来の問題点を解決するもので正極
活物質への電解液の供給を良好にし、放電中の電池維持
電圧を高めた新規な電池を提供することを目的とする。The present invention solves these conventional problems and aims to provide a novel battery that improves the supply of electrolyte to the positive electrode active material and increases the battery maintenance voltage during discharge.
課題を解決するための手段
この課題を解決するため本発明は、二酸化マンガンと炭
素材を主構成材料として用いた正極合剤を、金属製の正
極ケース内に密着させて収納したアルカリ乾電池におい
て、正極ケース内壁に導電性被膜を部分的に形成させた
ものである。Means for Solving the Problem In order to solve this problem, the present invention provides an alkaline dry battery in which a positive electrode mixture using manganese dioxide and carbon material as main constituent materials is tightly housed in a metal positive electrode case. A conductive film is partially formed on the inner wall of the positive electrode case.
作用
この構成によりアルカリ乾電池を構成した場合、導電性
被膜を部分的に形成させることによって生じた正極ケー
ス内壁と正極合剤とのすきまに保持された電解液が、正
極合剤外周方向から供給される。したがって、電池の中
心方向からのみの電解液の供給であったものが、外周方
向からも供給されるようになり、電解液の供給の遅れに
よる分極が小さくなシ、結果として強負荷放電時に平均
電圧が従来のものにくらべ４０１１１Ｖ程度高くするこ
とが可能となる。Effect When an alkaline dry battery is constructed with this configuration, the electrolyte held in the gap between the inner wall of the positive electrode case and the positive electrode mixture, which is created by partially forming a conductive film, is supplied from the outer circumferential direction of the positive electrode mixture. Ru. Therefore, instead of the electrolyte being supplied only from the center of the battery, it is now also supplied from the outer periphery, which reduces polarization caused by delays in electrolyte supply, resulting in an average It is possible to increase the voltage by about 40111V compared to the conventional one.
実施例
第２図（ＩＬ） 、 （ｂ）は、本発明の一実施例によ
る正極ケースの側面内壁を展開して示した図であシ、同
図（０）は（＆）の断面図である。それぞれ１３．１５
が導電性被膜で１２．１４は正極ケース内壁である。Embodiment FIGS. 2 (IL) and (b) are developed views of the side inner wall of a positive electrode case according to an embodiment of the present invention, and FIG. 2 (0) is a sectional view of (&). be. 13.15 each
is the conductive film, and 12.14 is the inner wall of the positive electrode case.
第２図（ａ）及びΦ）に示すようにそれぞれ、縞状及び
水玉状に導電性被膜を形成させた後、正極合剤を、充填
する方法をとった場合、第３図に示すように正極ケース
内壁に部分的に形成された導電性被膜は正極合剤との電
気的接触を十分にすると同時に、正極ケース内壁と正極
合剤との間にすきまを生じさせる。第３図には、電池を
上部よシ見た時の断面の半分を示した。１は正極合剤、
２はゲル負極、３はセパレータ、６は正極ケース、７は
縞状または水玉状に形成された導電性被膜、１６は正極
合剤と正極ケースとのすきまである。第２図（０）の断
面図中に示したａは導電性被膜の厚み、ｂは導電性被膜
と正極合剤との接触面であり、正極ケースと正極合剤と
の電気的接触をとる部分である。Ｃは正極合剤と正極ケ
ース内壁とのすきまで電解液を保持する部分の面積であ
る。If a method is adopted in which a conductive film is formed in striped and dotted shapes as shown in Fig. 2(a) and Φ) and then filled with positive electrode mixture, as shown in Fig. 3. The conductive film partially formed on the inner wall of the positive electrode case makes sufficient electrical contact with the positive electrode mixture, and at the same time creates a gap between the inner wall of the positive electrode case and the positive electrode mixture. Figure 3 shows half of the cross section of the battery when viewed from above. 1 is a positive electrode mixture;
2 is a gel negative electrode, 3 is a separator, 6 is a positive electrode case, 7 is a conductive film formed in a striped or dotted shape, and 16 is a gap between the positive electrode mixture and the positive electrode case. In the cross-sectional view of Figure 2 (0), a is the thickness of the conductive coating, and b is the contact surface between the conductive coating and the positive electrode mixture, which makes electrical contact between the positive electrode case and the positive electrode mixture. It is a part. C is the area of the portion that holds the electrolytic solution up to the gap between the positive electrode mixture and the inner wall of the positive electrode case.
正極ケース内壁に第２図の（！Ｌ）の展開図に示すよう
に縞状に導電性被膜を塗布し、第１図に示すＬＲａＲａ
シアルカリ乾電池成したものをムとじ、同様に第２図の
（ｂ）に示すように水玉状に導電性被膜を形成し、ＬＲ
ａ形電池を構成したものを電池Ｂとした。導電性被膜と
しては、例えば、ｐｖｃ（ポリビニルクロライド）をバ
インダーとし、これに導電性物質としてリン状黒鉛とア
セチレンブラックを分散させ溶媒としてメチルエチルケ
トンを用いた導電性塗料を用いて形成させた。この塗料
を正極ケース内壁に曲面印刷し、大気中で乾燥させて導
電性被膜を形成させた。電池人、Ｂにおいては上述のｂ
面と０面の比はどちらもｂ面の割合が全体の７０％とし
た。またａＯ値は上述の導電性被膜の場合１０μ論とし
た。電池人及びＢは第１図（ＩＬ）に示す状態に構成し
た。第１図（ＩＬ）において、１は二酸化マンガンと黒
鉛を主構成物質とする正極合剤、２はゲル化した電解液
に亜鉛粉末を分散させたゲル負極、３はセパレータ、４
は負極集電棒である０６は正極キャップ、６はニッケル
メッキを施した金属製正極ケース、７は正極ケース内壁
に部分的に形成された導電性被膜、８は電池の外装缶、
９は樹脂封口体、１０は底板、１１はハロンチューブで
ある。第１図（ｂ）はケース側壁の拡大断面図である。A conductive coating is applied to the inner wall of the positive electrode case in stripes as shown in the developed view (!L) in Fig. 2, and LRaRa as shown in Fig. 1 is applied.
The sia-alkali dry battery was glued together and a conductive film was formed in the shape of polka dots as shown in Fig. 2(b).
Battery B constituted an A-type battery. The conductive film was formed using, for example, a conductive paint using PVC (polyvinyl chloride) as a binder, phosphor graphite and acetylene black as conductive substances dispersed therein, and methyl ethyl ketone as a solvent. This paint was printed on a curved surface on the inner wall of the positive electrode case and dried in the atmosphere to form a conductive film. In battery person, B, the above-mentioned b
The ratio of the plane to the 0 plane was such that the proportion of the b plane was 70% of the total. Further, the aO value was set to 10μ in the case of the above-mentioned conductive film. Battery man and B were configured as shown in FIG. 1 (IL). In FIG. 1 (IL), 1 is a positive electrode mixture whose main constituents are manganese dioxide and graphite, 2 is a gel negative electrode in which zinc powder is dispersed in a gelled electrolyte, 3 is a separator, and 4
06 is a negative electrode current collector rod; 06 is a positive electrode cap; 6 is a nickel-plated metal positive electrode case; 7 is a conductive coating partially formed on the inner wall of the positive electrode case; 8 is a battery exterior can;
9 is a resin sealing body, 10 is a bottom plate, and 11 is a halon tube. FIG. 1(b) is an enlarged sectional view of the side wall of the case.
さて以上のように構成した電池は、正極ケース内壁全面
に導電性被膜を設けた電池に較べ正極ケースと正極合剤
との密着性が弱くなり、結果として接触抵抗の増加によ
る電池内部抵抗の上昇が懸念される。そこで上述のよう
に構成した電池ム。Now, in the battery configured as described above, the adhesion between the positive electrode case and the positive electrode mixture is weaker than that of a battery in which a conductive film is provided on the entire inner wall of the positive electrode case, and as a result, the internal resistance of the battery increases due to an increase in contact resistance. There are concerns. Therefore, a battery system configured as described above.
Ｂおよび正極ケース内壁に導電性被膜を一部ではなく全
面に形成させ、後は上記と同様の手順で構成した従来の
電池Ｃについてそれぞれ開回路電圧及び内部抵抗を測定
し、表１に示す結果を得た。The open circuit voltage and internal resistance were measured for B and conventional battery C, which were constructed using the same procedure as above, with a conductive coating being formed on the entire surface rather than a part of the inner wall of the positive electrode case, and the results are shown in Table 1. I got it.
測定は１ＫＨｚの交流インピーダンス測定法により行っ
た。この表から明らかなように懸念された内部抵抗の増
加はみられず正極ケース内壁に導電性被膜を全面に形成
するのではなく、内壁の一部に形成する場合においても
電池内部抵抗において電池人、Ｂはさほど影響のないこ
とがわかった０表１
第５図は、上述の実施例で得られた新規電池人。The measurement was performed using a 1 KHz AC impedance measurement method. As is clear from this table, the feared increase in internal resistance was not observed, and even when the conductive film was formed on a part of the inner wall of the positive electrode case instead of the entire surface, the internal resistance of the battery did not increase. , B was found to have little effect Table 1 Figure 5 shows the new battery obtained in the above example.
Ｂと従来電池Ｃについて２０°Ｃでの１Ω連続放電試験
で得られた、それぞれの放電特性を示すものである。グ
ラフからも明らかなように電池ム、Ｂは電池Ｃに対して
電解液の正極活物質への良好な供給により、０．７５Ｖ
までにおいて平均維持電圧が４０！Ｉｖ程度高くなり、
明らかに従来品よりも性能が大きく向上することがわか
る。さらに、上述の実施例で得られた電池ム、Ｂ及び従
来電池Ｃをそれぞれ６０°Ｃで２０日間保存した後、２
０’Ｃで１Ω連続放電試験を行った結果も第６図中に示
す。保存後の電池は保存前の電池よりは維持電圧は低下
しているものの保存後の電池五′及びＢ′は保存後の従
来電池Ｃ′にくらべ３０ＥＩＩＶ程度、維持電圧が高い
ことがわかる。This figure shows the discharge characteristics of B and conventional battery C obtained in a 1Ω continuous discharge test at 20°C. As is clear from the graph, battery B has a voltage of 0.75V compared to battery C due to good supply of electrolyte to the positive electrode active material.
The average maintenance voltage is 40! Iv becomes high,
It is clear that the performance is significantly improved over the conventional product. Furthermore, after storing each of the battery B and conventional battery C obtained in the above example at 60°C for 20 days,
The results of a 1Ω continuous discharge test at 0'C are also shown in FIG. Although the battery after storage has a lower maintenance voltage than the battery before storage, it can be seen that the storage voltage of batteries 5' and B' after storage is about 30EIIV higher than that of conventional battery C' after storage.
以上説明したように導電性被膜を正極ケース内壁に部分
的に形成させる方法によシ、電解液の正極合剤への供給
を良好にし、強負荷放電時に電池維持電圧を向上させる
ことができたが、次に部分的に導電性被膜を形成させる
場合、どの程度形成させればよいかを調べた。第６図に
、その結果を。As explained above, by forming a conductive film partially on the inner wall of the positive electrode case, it was possible to improve the supply of electrolyte to the positive electrode mixture and improve the battery maintenance voltage during heavy load discharge. However, when forming a conductive film partially, we investigated how much it should be formed. Figure 6 shows the results.
示した。グラフの横軸には上述したｂ面の全体に対する
割合、縦軸の左側には、放電終止電圧を０．７５Ｖとし
た時の平均電圧、右側には電池の放電前の内部抵抗を示
した。このグラフよシ、初度及び６０’Ｃで２０日間保
存後とも平均電圧に優位性のある範囲はｂ面の全体に対
する割合が３０〜７０％であることがわかる。したがっ
て正極ケース内壁に部分的に導電性被膜を形成させる場
合、ｂ面の全体に対する割合を３０〜７０％の範囲にす
ることが必要である。Indicated. The horizontal axis of the graph shows the ratio of the b-plane to the whole, the left side of the vertical axis shows the average voltage when the discharge end voltage is 0.75 V, and the right side shows the internal resistance of the battery before discharge. From this graph, it can be seen that the range in which the average voltage is superior both initially and after storage at 60'C for 20 days is in the range where the ratio of the b-plane to the whole is 30 to 70%. Therefore, when forming a conductive film partially on the inner wall of the positive electrode case, it is necessary to set the ratio of the b-plane to the whole in the range of 30 to 70%.
なお、導電性被膜をニッケルメッキとした場合、被膜の
厚みａは４μｍとすると、炭素質の導電性被膜の場合と
同様の結果を得た０
発明の効果
以上のように本発明によれば、アルカリ乾電池の強負荷
放電において、電解液の正極活物質への供給がよシ良好
になり、電解液の供給の遅れによる分極が小さくなり、
電池維持電圧を高めるという効果が得られる。In addition, when the conductive film is nickel plated and the thickness a of the film is 4 μm, the same results as in the case of a carbonaceous conductive film are obtained.0 Effects of the Invention As described above, according to the present invention, During heavy load discharge of alkaline dry batteries, the supply of electrolyte to the positive electrode active material is improved, and polarization caused by delays in the supply of electrolyte is reduced.
The effect of increasing battery maintenance voltage can be obtained.
第１図ｅ）は１本発明の実施例における電池の半断面図
、同（ｂ）はケース側壁部の拡大断面図、第２図（ａ）
、 （ｂ） 、 （０）は正極ケース内壁に部分的に
導電性被膜を形成させた時の展開図及び断面図、第３図
は本発明の実施例における電池の上部から見た時の断面
図、第４図は従来の電池の半断面図、第６図は本発明の
実施例における電池の放電特性を示す図、第６図は部分
的に導電性被膜を形成させる場合の割合を示す図である
。
１・・・・・・正極合剤、２・・・・・・ゲル負極、３
・・・・・・セパレータ、６・・・・・・金属製正極ケ
ース、Ｔ・・・・・・導電性被膜、１６・・・・・・正
極合剤と正極ケースとのすきま。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名／−
ｆ＆Ｊ−斉ツ
第
図
とのγさｊ
電泡艷及ＣＶＪ
第
図
第
図
す面の二必捲へ対Ｔる夢ｌ存、
〔２つFigure 1e) is a half-sectional view of a battery in an embodiment of the present invention, Figure 1(b) is an enlarged sectional view of the side wall of the case, Figure 2(a)
, (b) and (0) are developed views and cross-sectional views when a conductive film is partially formed on the inner wall of the positive electrode case, and FIG. 3 is a cross-sectional view when viewed from the top of the battery in an example of the present invention. 4 is a half-sectional view of a conventional battery, FIG. 6 is a diagram showing the discharge characteristics of a battery in an embodiment of the present invention, and FIG. 6 is a diagram showing the ratio when a conductive film is partially formed. It is a diagram. 1... Positive electrode mixture, 2... Gel negative electrode, 3
... Separator, 6 ... Metal positive electrode case, T ... Conductive coating, 16 ... Gap between positive electrode mixture and positive electrode case. Name of agent: Patent attorney Shigetaka Awano and 1 other person/-
f&J-Saitsu figure and gamma size j electric foam and CVJ figure figure figure two necessary winding of the dream l exist, [two
Claims (3)
合剤を、金属製の正極ケース内に密着させて収納したア
ルカリ乾電池であって、正極ケース内壁に導電性被膜を
部分的に形成したことを特徴とするアルカリ乾電池。(1) An alkaline dry battery in which a positive electrode mixture mainly composed of manganese dioxide and carbon material is housed in close contact with a metal positive electrode case, and a conductive film is partially formed on the inner wall of the positive electrode case. An alkaline dry battery characterized by:
、正極ケース内壁に導電性被膜が形成されている部分の
面積が、全体の面積の３０〜７０％である特許請求の範
囲第１項記載のアルカリ乾電池。(2) In the area where the positive electrode case and the positive electrode mixture face each other, the area of the part where the conductive film is formed on the inner wall of the positive electrode case is 30 to 70% of the total area, Claim 1 Alkaline batteries listed.
ある特許請求の範囲第１項又は第２項記載のアルカリ乾
電池。(3) The alkaline dry battery according to claim 1 or 2, wherein the conductive film is carbonaceous or nickel plated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63250195A JP2722528B2 (en) | 1988-10-04 | 1988-10-04 | Alkaline batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63250195A JP2722528B2 (en) | 1988-10-04 | 1988-10-04 | Alkaline batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0298037A true JPH0298037A (en) | 1990-04-10 |
| JP2722528B2 JP2722528B2 (en) | 1998-03-04 |
Family
ID=17204232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63250195A Expired - Lifetime JP2722528B2 (en) | 1988-10-04 | 1988-10-04 | Alkaline batteries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2722528B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040083A (en) * | 1997-04-04 | 2000-03-21 | Toshiba Battery Co., Ltd. | Alkaline dry cell containing a can of nickel-plated steel having an inner surface of graphite |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198866U (en) * | 1981-06-12 | 1982-12-17 |
-
1988
- 1988-10-04 JP JP63250195A patent/JP2722528B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198866U (en) * | 1981-06-12 | 1982-12-17 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040083A (en) * | 1997-04-04 | 2000-03-21 | Toshiba Battery Co., Ltd. | Alkaline dry cell containing a can of nickel-plated steel having an inner surface of graphite |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2722528B2 (en) | 1998-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4091178A (en) | Rechargeable alkaline MnO2 -zinc cell | |
| JPH02262274A (en) | Nonaqueous electrolyte secondary battery | |
| JP3273324B2 (en) | Separator for electrochemical cell | |
| US2526789A (en) | Dry cell | |
| JPS5848361A (en) | Alkaline dry cell | |
| JPH0298037A (en) | Alkaline dry battery | |
| JPH03743B2 (en) | ||
| JP2000048827A (en) | Alkaline battery | |
| JPH1126021A (en) | Lithium ion secondary battery | |
| JP2000123872A (en) | Lithium secondary battery | |
| JPH0512824B2 (en) | ||
| JPH0554891A (en) | Paste type cadmium anode plate for alkaline storage battery | |
| US684205A (en) | Reversible galvanic battery. | |
| JPS6091562A (en) | Cylindrical alkali battery | |
| JPH08264193A (en) | Alkaline manganess battery | |
| JPH01272049A (en) | Lithium secondary battery | |
| JP3705694B2 (en) | Alkaline manganese battery | |
| JPS594453Y2 (en) | battery | |
| JP3086313B2 (en) | Manganese dry cell | |
| JPS587766A (en) | Divalent silver oxide battery | |
| JP2992781B2 (en) | Manganese dry cell | |
| JPS62226576A (en) | Cylindrical liquid oxyhalogen compound-lithium battery | |
| JPS58163151A (en) | Silver oxide cell | |
| JPS58137971A (en) | Flat type battery | |
| JPS6215766A (en) | Slim type lithium battery |