JPH09199162A - Sealed alkaline storage battery - Google Patents
Sealed alkaline storage batteryInfo
- Publication number
- JPH09199162A JPH09199162A JP8025974A JP2597496A JPH09199162A JP H09199162 A JPH09199162 A JP H09199162A JP 8025974 A JP8025974 A JP 8025974A JP 2597496 A JP2597496 A JP 2597496A JP H09199162 A JPH09199162 A JP H09199162A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- electrode plate
- active material
- battery
- positive electrode
- 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
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 41
- 239000000956 alloy Substances 0.000 claims abstract description 41
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000001257 hydrogen Substances 0.000 claims abstract description 28
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 28
- 239000007773 negative electrode material Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 6
- 239000011149 active material Substances 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 13
- 238000004080 punching Methods 0.000 claims description 5
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 claims description 4
- 239000007774 positive electrode material Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052759 nickel Inorganic materials 0.000 abstract description 4
- 239000004952 Polyamide Substances 0.000 abstract description 2
- 229910052987 metal hydride Inorganic materials 0.000 abstract description 2
- 229920002647 polyamide Polymers 0.000 abstract description 2
- 239000006260 foam Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000004745 nonwoven fabric Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910001122 Mischmetal Inorganic materials 0.000 description 1
- 229910018007 MmNi Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000006262 metallic foam Substances 0.000 description 1
- 229910000652 nickel hydride Inorganic materials 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、負極活物質を多孔
性の電極基体の両面に担持してなる負極板と、セパレー
タと、正極活物質を電極基体に担持する正極板と、アル
カリ電解液と電池容器を具備してなる密閉形アルカリ蓄
電池に関するものである。TECHNICAL FIELD The present invention relates to a negative electrode plate having a negative electrode active material supported on both sides of a porous electrode substrate, a separator, a positive electrode plate having a positive electrode active material supported on an electrode substrate, and an alkaline electrolyte. And a sealed alkaline storage battery comprising a battery container.
【０００２】[0002]
【従来の技術】密閉形アルカリ蓄電池、とりわけ水素吸
蔵合金やカドミウムを主体とする負極板と、水酸化ニッ
ケルを主活物質とする正極板とを備える密閉形ニッケル
・水素化物アルカリ蓄電池は、エネルギー密度が高いこ
とから、ポータブル機器や電気自動車の電源として、近
年賞用されている。2. Description of the Related Art A sealed alkaline storage battery, especially a sealed nickel-hydride alkaline storage battery having a negative electrode plate mainly composed of hydrogen storage alloy or cadmium and a positive electrode plate mainly composed of nickel hydroxide has an energy density Because of its high price, it has been recently prized as a power source for portable devices and electric vehicles.
【０００３】これらの密閉形アルカリ蓄電池は、過充電
時に、水素ガスが負極から発生する前に、酸素ガスが正
極から発生するように、充電末期に未充電の活物質（こ
れは「充電リザーブ」とよばれる。）が残るように電池
を構成する。そして、正極から発生した酸素ガスを負極
において還元吸収することによって、電池内へのガスの
蓄積を防止し、密閉化を達成している。These sealed alkaline storage batteries have an uncharged active material at the end of charging (this is a "charging reserve") so that oxygen gas is generated from the positive electrode before hydrogen gas is generated from the negative electrode during overcharging. The battery is configured so that Then, the oxygen gas generated from the positive electrode is reduced and absorbed in the negative electrode to prevent the gas from accumulating in the battery and achieve sealing.
【０００４】[0004]
【発明が解決しようとする課題】このような密閉形アル
カリ蓄電池では、電池のエネルギー密度を大きくしょう
として、充放電に関与しない充電リザーブ量を少なくし
ょうとすると、充電末期に負極からの水素ガス発生が起
こりやすくなり、電池の安全弁が開いて、電池内のガス
や電解液が放出され、電解液涸れが起こって、電池寿命
が短くなるという課題があった。この課題は、負極に水
素吸蔵合金を用いる場合に、その水素過電圧が小さく水
素が発生しやすいことから、深刻であった。In such a sealed alkaline storage battery, when trying to increase the energy density of the battery and reduce the amount of charge reserve not involved in charging / discharging, hydrogen gas is generated from the negative electrode at the end of charging. Is more likely to occur, the safety valve of the battery is opened, the gas and the electrolytic solution in the battery are released, and the electrolyte solution is discharged, which shortens the battery life. This problem was serious when the hydrogen storage alloy was used for the negative electrode because the hydrogen overvoltage was small and hydrogen was easily generated.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記した課題
を解決するために、負極活物質を多孔性の電極基体の
両面に担持してなる水素吸蔵合金を主体とした負極板
と、セパレータと、水酸化ニッケルを主体とする正極活
物質を電極基体に担持する正極板と、アルカリ電解液と
電池容器を具備してなる密閉形アルカリ蓄電池であっ
て、前記正極板が前記セパレータを介して前記負極板と
対向し、両側の面において前記正極板と対向する前記負
極板の部分（Ａ）と、片側の面において前記正極板と対
向する前記負極板の部分（Ｂ）とを具備し、前記負極板
の部分（Ａ）の単位面積に担持される活物質の量が、前
記負極板の部分（Ｂ）の単位面積に担持される活物質の
量よりも多い密閉形アルカリ蓄電池を提供する。In order to solve the above problems, the present invention provides a negative electrode plate mainly composed of a hydrogen storage alloy having a negative electrode active material supported on both surfaces of a porous electrode substrate, and a separator. A positive electrode plate carrying a positive electrode active material mainly composed of nickel hydroxide on an electrode substrate, and a sealed alkaline storage battery comprising an alkaline electrolyte and a battery container, wherein the positive electrode plate is provided with the separator interposed therebetween. A negative electrode plate portion (A) facing the negative electrode plate and facing the positive electrode plate on both sides, and a negative electrode plate portion (B) facing the positive electrode plate on one side surface, Provided is a sealed alkaline storage battery, wherein the amount of the active material supported on the unit area of the negative electrode plate (A) is larger than the amount of the active material supported on the unit area of the negative electrode plate (B). .
【０００６】さらに、前記負極板の部分（Ａ）の単位
面積に担持される活物質の量が、前記負極板の部分
（Ｂ）の単位面積に担持される活物質の量を１００％と
して、１０％以上多いことが好ましい。Further, the amount of the active material supported on the unit area of the negative electrode plate portion (A) is 100%, with the amount of the active material supported on the unit area of the negative electrode plate portion (B) being 100%. It is preferably 10% or more.
【０００７】さらに、前記負極板の電極基体が耐アル
カリ性金属からなるパンチングメタルデあり、負極活物
質がその両面に担持されている密閉形アルカリ蓄電池を
提供する。Further, there is provided a sealed alkaline storage battery in which the electrode substrate of the negative electrode plate is a punching metal plate made of an alkali-resistant metal, and the negative electrode active material is carried on both surfaces thereof.
【０００８】[0008]
【発明の実施の形態】本発明の構成すなわち、密閉形ア
ルカリ蓄電池において、負極活物質を多孔性の電極基体
の両面に担持してなる水素吸蔵合金を主体とした負極板
と、セパレータと、水酸化ニッケルを主体とする正極活
物質を電極基体に担持する正極板と、アルカリ電解液と
電池容器を具備してなる密閉形アルカリ蓄電池であっ
て、前記正極板が前記セパレータを介して前記負極板と
対向し、両側の面において前記正極板と対向する前記負
極板の部分（Ａ）と、片側の面において前記正極板と対
向する前記負極板の部分（Ｂ）とを具備し、前記負極板
の部分（Ａ）の単位面積に担持される活物質の量が、前
記負極板の部分（Ｂ）単位面積に担持される活物質の量
よりも多くすることにより、充電時の内圧の上昇が効果
的に抑制され、電池のサイクル寿命が向上する。BEST MODE FOR CARRYING OUT THE INVENTION The constitution of the present invention, namely, in a sealed alkaline storage battery, a negative electrode plate mainly composed of a hydrogen storage alloy in which a negative electrode active material is carried on both sides of a porous electrode substrate, a separator, and a water A sealed alkaline storage battery comprising a positive electrode plate carrying a positive electrode active material mainly composed of nickel oxide on an electrode substrate, an alkaline electrolyte and a battery container, wherein the positive electrode plate is the negative electrode plate via the separator. The negative electrode plate (A) facing the positive electrode plate on both sides and the negative electrode plate part (B) facing the positive electrode plate on one side. By increasing the amount of the active material carried on the unit area of the portion (A) above the amount of the active material carried on the unit area of the portion (B) of the negative electrode plate, the internal pressure during charging rises. Battery effectively suppressed Cycle life can be improved.
【０００９】具体的には、帯状電極を捲回して構成した
円筒形や長円形電池では、最外周や最内周の部分の負極
板が、前記負極板（Ｂ）に相当し、平板状電極を積層し
て構成した角形電池では、最外側の部分の負極板が、前
記負極板（Ｂ）に相当する。Specifically, in a cylindrical or elliptical battery constructed by winding a strip electrode, the negative electrode plate at the outermost or innermost portion corresponds to the negative electrode plate (B), and the flat plate electrode is used. In the prismatic battery formed by stacking the above, the outermost negative electrode plate corresponds to the negative electrode plate (B).
【００１０】また、電池内圧を著しく上昇させることな
く、大電流の充電が可能となるので、より短時間の急速
充電が可能となる。Further, since it is possible to charge a large current without significantly increasing the internal pressure of the battery, it is possible to carry out rapid charging in a shorter time.
【００１１】このような電池の内圧上昇が抑制される機
構については明確ではないが、両側の面において正極板
と対向する負極板は、充放電反応が良好に進むときに、
充電終期に正極から発生した酸素ガスをスムーズに吸収
することができる。Although the mechanism of suppressing the increase in the internal pressure of such a battery is not clear, the negative electrode plate facing the positive electrode plate on both side surfaces is
Oxygen gas generated from the positive electrode at the end of charging can be absorbed smoothly.
【００１２】しかし、片側の面において正極板と対向す
る負極板では、正極に対向していない側の負極活物質
は、金網などの多孔性の電極基体の無孔部の影になる部
分において、充電反応に関与しにくいと推定される。However, in the negative electrode plate facing the positive electrode plate on one surface, the negative electrode active material on the side not facing the positive electrode is in the shadow of the non-porous portion of the porous electrode substrate such as a wire mesh. It is presumed that it is difficult to participate in the charging reaction.
【００１３】とくに負極板の電極基体がパンチングメタ
ルの場合に、パンチングメタルの無孔部の影になる部分
の面積が大きいので、その負極活物質の多くが、充電反
応に関与しにくいと推定される。Especially when the electrode substrate of the negative electrode plate is made of punching metal, since the area of the shadow of the non-hole portion of the punching metal is large, it is presumed that most of the negative electrode active material is less likely to participate in the charging reaction. It
【００１４】よって、両側の面において前記正極板と対
向する前記負極板の部分（Ａ）と、片側の面において前
記正極板と対向する前記負極板（Ｂ）とを具備し、前記
負極板の部分（Ａ）の単位面積に担持される活物質の量
が、前記負極板の部分（Ｂ）の単位面積に担持される活
物質の量よりも多くすることにより、前記負極板の部分
（Ｂ）において、負極板の電極基体の影になる負極活物
質の量が減少し、そのことによって、電池内に占める負
極の体積、および見かけのリザーブ量は同じであって
も、有効なリザーブ量が大きくなるためと考えられる。Accordingly, the negative electrode plate has a portion (A) facing the positive electrode plate on both sides, and the negative electrode plate (B) facing the positive electrode plate on one side surface. By making the amount of the active material supported on the unit area of the portion (A) larger than the amount of the active material supported on the unit area of the portion (B) of the negative electrode plate, the portion (B) of the negative electrode plate is ), The amount of the negative electrode active material that shadows the electrode substrate of the negative electrode plate is reduced, and as a result, even if the negative electrode volume occupied in the battery and the apparent reserve amount are the same, the effective reserve amount is It is thought to be because it becomes large.
【００１５】このような効果は、前記負極板の部分
（Ａ）の単位面積に担持される活物質の量が、前記負極
板の部分（Ｂ）の単位面積に担持される活物質の量を１
００％として、１０％以上多い場合に顕著である。Such an effect is obtained such that the amount of the active material supported on the unit area of the portion (A) of the negative electrode plate is equal to the amount of the active material supported on the unit area of the portion (B) of the negative electrode plate. 1
It is remarkable when it is more than 10% as 00%.
【００１６】[0016]
【実施例】本発明を好適な実施例によって詳しく説明す
る。The present invention will be described in detail with reference to preferred embodiments.
【００１７】負極はつぎの方法で製作した。ミッシュメ
タル（原料はバストネサイト）、ニッケル、コバルト、
マンガン、およびアルミニウムの金属材料をＭｍＮｉ
３．５ Ｃｏ０．８ Ｍｎ０．３ＡＡｌ０．４
のなるようにアルゴン雰囲気にした高周波誘導炉で溶解
し、この溶湯をモールドに流し込んで鋳込み、この合金
塊を、ジョークラッシャーで粗粉砕してからボールミル
で微粉砕するという方法で機械的に粉砕し、篩掛けし
て、水素吸蔵合金粉末を得た。The negative electrode was manufactured by the following method. Misch metal (raw material is bastnasite), nickel, cobalt,
Manganese and aluminum metal materials MmNi
3.5 Co0.8 Mn0.3 AAl0.4
It is melted in a high-frequency induction furnace in an argon atmosphere so that the molten alloy is poured into a mold and cast, and this alloy block is mechanically crushed by a method of coarsely crushing with a jaw crusher and then finely crushing with a ball mill. Then, sieving was performed to obtain a hydrogen storage alloy powder.
【００１８】次に、この水素吸蔵合金粉末を主体とし、
結着剤を分散した分散液ととともに混練りしてペースト
状混合物を調整した。このペースト状混合物を、厚さが
０．０５μｍで開口率が約０．５のニッケルメッキした
鉄製パンチングメタルの両面に塗布し、乾燥した後プレ
スし、所定の寸法に切断して水素吸蔵合金電極を製作し
た。この際に、水素吸蔵合金のの担持量を変えた同一面
積の水素吸蔵合金電極Ａ１〜Ａ１１を作成した。これら
の水素吸蔵合金電極Ａ１〜Ａ１１の合金充填量を表１に
示す。Next, mainly using this hydrogen storage alloy powder,
A paste-like mixture was prepared by kneading with a dispersion liquid in which a binder was dispersed. This paste-like mixture is applied to both sides of a nickel-plated iron punching metal having a thickness of 0.05 μm and an aperture ratio of about 0.5, dried, pressed, cut into a predetermined size and cut into a hydrogen storage alloy electrode. Was produced. At this time, the hydrogen storage alloy electrodes A1 to A11 having the same area with different amounts of carried hydrogen storage alloy were prepared. Table 1 shows the alloy filling amounts of these hydrogen storage alloy electrodes A1 to A11.
【００１９】[0019]
【表１】 図１は水素吸蔵合金電極の配置を示した模式図である。
図１において、上記の水素吸蔵合金電極が、両面が正極
板と対向する部分Ａの内側の２枚と、片面が正極板と対
向する部分Ｂの外側の２枚とに種々組合わせた計４枚と
ポリアミド系不織布のセパレータ２で封筒状に包み込ま
れた公知の発泡メタル式ニッケル正極板３を３枚（水酸
化ニッケルを主体とする活物質の容量は合計９００ｍＡ
ｈ）とを交互に積層して電極群を形成し、深絞りケース
１にＫＯＨを主体とするアルカリ電解液とともに、上記
の電極群を設置して、復帰式の安全弁を有する蓋板とケ
ースとをケーザー溶接することによって、高さ６７ｍ
ｍ、幅１６．４ｍｍ、厚さ６ｍｍのニッケル・金属水素
化物電池を製作した。[Table 1] FIG. 1 is a schematic diagram showing the arrangement of hydrogen storage alloy electrodes.
In FIG. 1, a total of 4 hydrogen-absorbing alloy electrodes are combined, two inside the portion A whose both surfaces face the positive electrode plate and two outside the portion B whose one surface faces the positive electrode plate. 3 pieces of publicly known metal foam nickel type positive electrode plates 3 which are wrapped in an envelope shape with one sheet and a polyamide non-woven separator 2 (the total capacity of the active material mainly containing nickel hydroxide is 900 mA).
and h) are alternately laminated to form an electrode group, and the above-mentioned electrode group is installed in the deep-drawing case 1 together with an alkaline electrolyte mainly composed of KOH, and a cover plate and a case having a return type safety valve are provided. 67m height by welding with KAESER
A nickel metal hydride battery having a size of m, a width of 16.4 mm and a thickness of 6 mm was manufactured.
【００２０】水素吸蔵合金電極Ａ６を４枚用いた従来電
池をａ１、水素吸蔵合金電極Ａ５を内側の２枚（Ａ）
に、水素吸蔵合金電極Ａ７を外側の２枚（Ｂ）に用いた
比較電池をｂ１、水素吸蔵合金電極Ａ４を内側の２枚
（Ａ）に、水素吸蔵合金電極Ａ８を外側の２枚（Ｂ）に
用いた本発明による実施例１の電池をｂ２、水素吸蔵合
金電極Ａ３を内側の２枚（Ａ）に、水素吸蔵合金電極Ａ
９を外側の２枚（Ｂ）に用いた本発明による実施例２の
電池をｂ３、および水素吸蔵合金電極Ａ２を内側の２枚
（Ａ）に、水素吸蔵合金電極Ａ１０を外側の２枚（Ｂ）
に用いた本発明による実施例３の電池をｂ４、および水
素吸蔵合金電極Ａ１を内側の２枚（Ａ）に、水素吸蔵合
金電極Ａ１１を外側の２枚（Ｂ）に用いた実施例４の電
池をｂ５と呼ぶ。表２に製作した電池の構成をしめす。The conventional battery using four hydrogen-absorbing alloy electrodes A6 is a1, and the hydrogen-absorbing alloy electrode A5 is two inside (A).
In addition, the comparative battery using the hydrogen storage alloy electrode A7 on the outer two sheets (B) is b1, the hydrogen storage alloy electrode A4 is on the inner two sheets (A), and the hydrogen storage alloy electrode A8 is on the outer two sheets (B). B), the hydrogen storage alloy electrode A3 on the inner two sheets (A), and the hydrogen storage alloy electrode A
The battery of Example 2 according to the present invention in which 9 is used for the outer two sheets (B) is b3, the hydrogen storage alloy electrode A2 is for the inner two sheets (A), and the hydrogen storage alloy electrode A10 is for the outer two sheets ( B)
The battery of Example 3 according to the present invention used for b4, and the hydrogen storage alloy electrode A1 for the inner two sheets (A) and the hydrogen storage alloy electrode A11 for the outer two sheets (B) were used. The battery is called b5. Table 2 shows the composition of the batteries produced.
【００２１】[0021]
【表２】 以上の電池を、圧力センサを取り付けた電池内圧測定容
器に設置し、室温にて１時間率の電流にて充電し、内圧
の変化を測定した。結果を表３にしめす。[Table 2] The above battery was placed in a battery internal pressure measuring container equipped with a pressure sensor, charged at room temperature with a current of 1 hour rate, and the change in internal pressure was measured. The results are shown in Table 3.
【００２２】[0022]
【表３】 すなわち、すべて同じ合金重量の負極を用いた従来電池
ａ１よりも、両側とも正極に対向している負極の合金重
量が、片側のみ正極に対向する負極の合金重量に対し
て、１０％以上多くなるように備えている本発明電池ｂ
２、ｂ３、ｂ４、およびｂ５のほうが内圧の上昇が低く
抑えられていることがわかる。[Table 3] That is, the alloy weight of the negative electrode facing the positive electrode on both sides is 10% or more greater than the alloy weight of the negative electrode facing the positive electrode on only one side, as compared with the conventional battery a1 using the negative electrode having the same alloy weight. Inventive battery b
It can be seen that in 2, b3, b4, and b5, the increase in internal pressure is suppressed to be low.
【００２３】しかしながら、両側とも正極に対向してい
る負極の合金重量が、片側のみ正極に対向する負極の合
金重量に対して、１１０％以下である比較電池ｂ１の場
合は、内圧の上昇を低く抑える効果はほとんど認められ
なかった。However, in the case of the comparative battery b1 in which the alloy weight of the negative electrode facing both sides of the positive electrode is 110% or less of the alloy weight of the negative electrode facing only one side of the positive electrode, the increase in internal pressure is low. Almost no suppression effect was observed.
【００２４】つぎに、従来電池ａ１、比較電池ｂ１及び
本発明電池ｂ２、ｂ３、ｂ４およびｂ５の充放電サイク
ル寿命試験をおこなった。このときの試験条件は、−Δ
Ｖ制御方式（充電終止電圧差：５ｍＶ）で９００ｍＡ
（１ＣｍＡ）の電流で充電し、９００ｍＡで電池電圧が
１．０Ｖになるまで放電するものであり、容量確認試験
［１８０ｍＡ（０．２ＣｍＡ）で終止電圧１．０Ｖまで
放電］は５０サイクル毎におこなった。Next, a charge / discharge cycle life test was performed on the conventional battery a1, the comparative battery b1, and the batteries of the present invention b2, b3, b4 and b5. The test condition at this time is -Δ
900 mA with V control method (difference in end-of-charge voltage: 5 mV)
The battery is charged with a current of (1 CmA) and discharged at 900 mA until the battery voltage reaches 1.0 V. The capacity confirmation test [discharge at 180 mA (0.2 CmA) to the final voltage of 1.0 V] is performed every 50 cycles. I did it.
【００２５】このときの各電池が寿命（初期容量の８０
％以下になるまで）に至るまでのサイクル数を表４に示
す。すべて同じ合金重量の負極を用いた従来電池ａ１よ
りも、両側とも正極に対向している負極の合金重量が、
片側のみ正極に対向する負極の合金重量に対して、１０
％以上多く備えている本発明電池ｂ２、ｂ３、ｂ４、お
よびｂ５のほうが充放電サイクル寿命性能に優れている
ことがわかる。At this time, each battery has a life (80% of the initial capacity).
Table 4 shows the number of cycles required to reach (up to%). The alloy weight of the negative electrode facing the positive electrode on both sides is
10 against the alloy weight of the negative electrode facing the positive electrode only on one side
It can be seen that the batteries b2, b3, b4, and b5 of the present invention, which are provided in a large amount by at least%, have superior charge / discharge cycle life performance.
【００２６】しかしながら、両側とも正極に対向してい
る負極の合金重量が、片側のみ正極に対向する負極の合
金重量に対して、１１０％以下である比較電池ｂ１の場
合、従来電池ａ１と同様の寿命であった。However, in the case of the comparative battery b1 in which the alloy weight of the negative electrode facing the positive electrode on both sides is 110% or less of the alloy weight of the negative electrode facing the positive electrode on only one side, the same as the conventional battery a1. It was a lifetime.
【００２７】[0027]
【表４】 [Table 4]
【００２８】[0028]
【発明の効果】以上述べたように、本発明によれば、密
閉形アルカリ蓄電池の充電時の内圧の上昇が効果的に抑
制され、サイクル寿命が向上する。As described above, according to the present invention, the rise of the internal pressure during charging of the sealed alkaline storage battery is effectively suppressed, and the cycle life is improved.
【図１】本発明による角形電池の水素吸蔵合金電極の配
置を示す模式図である。FIG. 1 is a schematic view showing the arrangement of hydrogen storage alloy electrodes of a prismatic battery according to the present invention.
１ 深絞ケース ２ セパレータ ３ 正極板 Ａ 両面が正極板と対向する水素吸蔵合金電極 Ｂ 片面が正極板と対向する水素吸蔵合金電極 1 Deep drawing case 2 Separator 3 Positive electrode plate A Hydrogen storage alloy electrode with both surfaces facing the positive electrode plate B Hydrogen storage alloy electrode with one surface facing the positive electrode plate
Claims (3)
担持してなる水素吸蔵合金を主体とした負極板と、セパ
レータと、水酸化ニッケルを主体とする正極活物質を電
極基体に担持する正極板と、アルカリ電解液と電池容器
を具備してなる密閉形アルカリ蓄電池であって、前記正
極板が前記セパレータを介して前記負極板と対向し、両
側の面において前記正極板と対向する前記負極板の部分
（Ａ）と、片側の面において前記正極板と対向する前記
負極板の部分（Ｂ）とを具備し、前記負極板の部分
（Ａ）の単位面積に担持される活物質の量が、前記負極
板の部分（Ｂ）の単位面積に担持される活物質の量より
も多いことを特徴とする密閉形アルカリ蓄電池。1. A negative electrode plate mainly composed of a hydrogen storage alloy in which a negative electrode active material is supported on both sides of a porous electrode substrate, a separator, and a positive electrode active material mainly composed of nickel hydroxide is supported on the electrode substrate. A sealed alkaline storage battery comprising a positive electrode plate, an alkaline electrolyte and a battery container, wherein the positive electrode plate faces the negative electrode plate via the separator, and faces both sides of the positive electrode plate. An active material comprising a portion (A) of the negative electrode plate and a portion (B) of the negative electrode plate that faces the positive electrode plate on one surface, and is supported in a unit area of the portion (A) of the negative electrode plate. Is larger than the amount of the active material carried in the unit area of the portion (B) of the negative electrode plate, the sealed alkaline storage battery.
される活物質の量が前記負極板の部分（Ｂ）の単位面積
に担持される活物質の量を１００％として、１０％以上
多いことを特徴とする請求項１記載の密閉形アルカリ蓄
電池。2. The amount of the active material supported on the unit area of the portion (A) of the negative electrode plate is 10% with the amount of the active material supported on the unit area of the portion (B) of the negative electrode plate being 100%. % Or more, The sealed alkaline storage battery according to claim 1, wherein
リ性金属からなるパンチングメタルであり、負極活物質
がその両面に担持されていることを特徴とする請求項１
又は２に記載の密閉形アルカリ蓄電池。3. The porous electrode substrate of the negative electrode plate is a punching metal made of an alkali resistant metal, and the negative electrode active material is carried on both sides of the metal.
Or the sealed alkaline storage battery according to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02597496A JP3815511B2 (en) | 1996-01-18 | 1996-01-18 | Nickel / metal hydride sealed alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02597496A JP3815511B2 (en) | 1996-01-18 | 1996-01-18 | Nickel / metal hydride sealed alkaline storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09199162A true JPH09199162A (en) | 1997-07-31 |
| JP3815511B2 JP3815511B2 (en) | 2006-08-30 |
Family
ID=12180709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02597496A Expired - Lifetime JP3815511B2 (en) | 1996-01-18 | 1996-01-18 | Nickel / metal hydride sealed alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3815511B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474706A (en) * | 2013-09-29 | 2013-12-25 | 赵云德 | Nickel-cadmium alkaline dry-type storage battery |
| US9722215B2 (en) | 2011-07-20 | 2017-08-01 | Gs Yuasa International Ltd. | Cylindrical battery |
| CN115117466A (en) * | 2022-06-17 | 2022-09-27 | 重庆宏辰科扬能源有限责任公司 | Production process of cylindrical high-voltage nickel-hydrogen battery |
-
1996
- 1996-01-18 JP JP02597496A patent/JP3815511B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9722215B2 (en) | 2011-07-20 | 2017-08-01 | Gs Yuasa International Ltd. | Cylindrical battery |
| CN103474706A (en) * | 2013-09-29 | 2013-12-25 | 赵云德 | Nickel-cadmium alkaline dry-type storage battery |
| CN115117466A (en) * | 2022-06-17 | 2022-09-27 | 重庆宏辰科扬能源有限责任公司 | Production process of cylindrical high-voltage nickel-hydrogen battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3815511B2 (en) | 2006-08-30 |
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