JPH08162092A - Alkaline storage battery - Google Patents
Alkaline storage batteryInfo
- Publication number
- JPH08162092A JPH08162092A JP6300963A JP30096394A JPH08162092A JP H08162092 A JPH08162092 A JP H08162092A JP 6300963 A JP6300963 A JP 6300963A JP 30096394 A JP30096394 A JP 30096394A JP H08162092 A JPH08162092 A JP H08162092A
- Authority
- JP
- Japan
- Prior art keywords
- pole
- battery
- alkaline
- copper
- storage battery
- 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.)
- Pending
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
Landscapes
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ニッケル−カドミウム
蓄電池、ニッケル−水素蓄電池等のアルカリ蓄電池にお
ける極柱の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a pole in an alkaline storage battery such as a nickel-cadmium storage battery or a nickel-hydrogen storage battery.
【０００２】[0002]
【従来の技術】従来、電気自動車、ロードレベリング等
に用いられるニッケル−カドミウム蓄電池、ニッケル−
水素蓄電池、ニッケル−亜鉛蓄電池等の大容量アルカリ
蓄電池において、正極、負極、セパレータからなる発電
要素を電槽内に配置し、正極及び負極と電気的に接続さ
れた極柱が電槽内から電槽を貫通して、電槽外に極柱の
一部が突出して電流を取り出すという構造を多く採用し
ている。この場合の極柱の材質としては、ニッケル、ニ
ッケル合金、鉄、鋼材等が広く使用されている。2. Description of the Prior Art Conventionally, nickel-cadmium storage batteries and nickel-based batteries used in electric vehicles, road leveling, etc.
In a large-capacity alkaline storage battery such as a hydrogen storage battery or a nickel-zinc storage battery, a power generation element consisting of a positive electrode, a negative electrode, and a separator is placed in a battery case, and a pole that is electrically connected to the positive electrode and the negative electrode is charged from the battery case. A structure is often adopted in which a part of the pole pillar projects outside the battery case and penetrates the tank to take out current. Nickel, nickel alloys, iron, steel and the like are widely used as the material of the poles in this case.
【０００３】しかしながら、極柱の材質を上記材質にし
た場合、ハイレート充電やハイレート放電をすると、大
電流が極柱に流れるため、極柱自身が大電流により発熱
し、電池温度を上昇させ、電池特性に悪影響を与える原
因となっていた。However, in the case where the material of the pole column is the above-mentioned material, when high rate charging or high rate discharge is performed, a large current flows into the pole column, so that the pole column itself generates heat due to the large current and raises the battery temperature, It was a cause of adversely affecting the characteristics.
【０００４】又、高温下でニッケル−カドミウム蓄電
池、ニッケル−水素蓄電池、ニッケル−亜鉛蓄電池等の
アルカリ蓄電池の充電を行うと、正極に使用しているニ
ッケル正極の酸素発生過電位が低下するので、充電時に
正極から酸素が発生し易くなる。正極から酸素が発生す
ると、充電電流の一部が正極からの酸素発生に使われる
ので、充電効率の著しい低下を引き起こす原因となる。Further, when an alkaline storage battery such as a nickel-cadmium storage battery, a nickel-hydrogen storage battery or a nickel-zinc storage battery is charged at a high temperature, the oxygen generation overpotential of the nickel positive electrode used as the positive electrode decreases, Oxygen is easily generated from the positive electrode during charging. When oxygen is generated from the positive electrode, part of the charging current is used to generate oxygen from the positive electrode, which causes a significant decrease in charging efficiency.
【０００５】このような問題を解決するために、大容量
のアルカリ蓄電池の極柱の材質として、特開平５−２８
３０５６号公報では、電気伝導性、熱伝導性の良好な銅
を使用しており、又、特開平５−２９０８２９号公報で
は、極柱表面にニッケルメッキまたは銅メッキをしたア
ルミニウムを使用することが記載されている。In order to solve such a problem, as a material for the poles of a large-capacity alkaline storage battery, Japanese Patent Laid-Open No. 5-28 is known.
No. 3056 uses copper having good electrical conductivity and thermal conductivity, and in Japanese Patent Laid-Open No. 290829/1993, aluminum having nickel or copper plating on the surface of a pole is used. Has been described.
【０００６】しかしながら、上記公報では、電槽内にあ
る極柱部分は、電解液であるアルカリ水溶液に直接接し
ている状態にある。However, in the above publication, the pole portion in the battery case is in direct contact with the alkaline aqueous solution which is the electrolytic solution.
【０００７】このようにアルカリ水溶液と銅が接触する
と、銅はアルカリ水溶液に非常に溶解し易いので、電解
液中に銅が溶解し、溶解した銅イオンは、充放電の繰り
返しによって、負極表面上に樹枝状に溶解析出するいわ
ゆるデンドライトを生じる。When the alkaline aqueous solution comes into contact with copper in this way, copper is very easily dissolved in the alkaline aqueous solution, so that copper is dissolved in the electrolytic solution and the dissolved copper ions are repeatedly charged and discharged on the surface of the negative electrode. A so-called dendrite is formed which dissolves and precipitates in a dendritic manner.
【０００８】デンドライトが成長すると、セパレータを
貫通して、対極の正極に到達して、内部ショートを引き
起こし、サイクル寿命の低下の原因となる。When the dendrite grows, it penetrates the separator to reach the positive electrode of the counter electrode, causing an internal short circuit, which causes a decrease in cycle life.
【０００９】又、極柱の材質がアルミニウムの場合は、
アルカリ水溶液に溶解して、活物質表面上にアルミニウ
ムの不導体膜を形成することになり、電池容量の低下を
引き起こす。If the material of the poles is aluminum,
When dissolved in an alkaline aqueous solution, an aluminum non-conductive film is formed on the surface of the active material, which causes a decrease in battery capacity.
【００１０】さらに、銅またはアルミニウムがアルカリ
電解液と直接接触しないように、表面にニッケルメッキ
を施しても、ピンホール、傷、溶接によるニッケルメッ
キの剥がれ等によって、銅またはアルミニウムの表面が
露出するので、アルカリ電解液と完全に接触させないよ
うにすることは困難であった。Furthermore, even if nickel is plated on the surface so that copper or aluminum does not come into direct contact with the alkaline electrolyte, the surface of copper or aluminum is exposed due to pinholes, scratches, peeling of the nickel plating due to welding, etc. Therefore, it has been difficult to prevent the alkaline electrolyte from coming into contact completely.
【００１１】[0011]
【発明が解決しようとする課題】本発明は、上記の問題
点を解決し、アルカリ蓄電池の温度上昇を防止し、充電
効率を向上させると共に、サイクル寿命の低下を防止す
ることを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems, prevent the temperature rise of an alkaline storage battery, improve the charging efficiency, and prevent the cycle life from decreasing.
【００１２】[0012]
【課題を解決するための手段】本発明は、正極と、負極
と、セパレータとからなる発電要素を電槽に挿入し、該
電槽内にアルカリ性電解液を注液した蓄電池において、
前記発電要素と電気的に接続する極柱を備え、該極柱
は、高電気伝導性金属と、メッキ処理以外で形成された
耐アルカリ性金属とよりなり、前記高電気伝導性金属は
前記アルカリ性電解液と接触せず、かつ前記耐アルカリ
性金属は発電要素と電気的に接続されていることを特徴
とする。The present invention provides a storage battery in which a power generating element consisting of a positive electrode, a negative electrode, and a separator is inserted into a battery case, and an alkaline electrolyte is poured into the battery case.
A pole column electrically connected to the power generating element is provided, and the pole column is made of a highly electrically conductive metal and an alkali resistant metal formed by a method other than plating, and the highly electrically conductive metal is the alkaline electrolytic metal. It is characterized in that it is not in contact with a liquid and the alkali resistant metal is electrically connected to the power generating element.
【００１３】また、前記高電気伝導性金属が、銅、銅合
金、アルミニウム、アルミニウム合金から選ばれた少な
くとも１種類以上からなることが好ましい。Further, it is preferable that the high electric conductive metal is made of at least one selected from copper, copper alloy, aluminum and aluminum alloy.
【００１４】さらに、前記耐アルカリ性金属がニッケ
ル、ニッケル合金、鉄、鋼材から選ばれた少なくとも１
種類以上からなることが好ましい。Further, the alkali resistant metal is at least one selected from nickel, nickel alloys, iron and steel materials.
It is preferably composed of more than one kind.
【００１５】[0015]
【作用】本発明は、アルカリ蓄電池における極柱の材質
において、電槽内でアルカリ電解液と接触する部分は、
耐アルカリ性金属からなり、この耐アルカリ性金属と発
電要素とは電気接続されている。According to the present invention, in the material of the poles of the alkaline storage battery, the portion in contact with the alkaline electrolyte in the battery case is
It is made of an alkali resistant metal, and the alkali resistant metal and the power generating element are electrically connected.
【００１６】さらに、極柱の材質において、高電気伝導
性金属は、電槽内における耐アルカリ電解液とは接触し
ない構造である。Further, in the material of the poles, the highly electrically conductive metal does not come into contact with the alkali resistant electrolytic solution in the battery case.
【００１７】上記本発明の構成によって、ハイレート充
放電による大電流が流れた場合の電池温度上昇を抑制す
ることができ、充放電効率を向上させることができる。With the above-described structure of the present invention, it is possible to suppress an increase in battery temperature when a large current flows due to high rate charging / discharging, and it is possible to improve charging / discharging efficiency.
【００１８】また、高電気伝導性金属として、銅、銅合
金、アルミニウム、アルミニウム合金から選ばれた少な
くとも１種類以上からなるものにすることによって、電
池温度上昇をより効果的に抑制することができる。Further, when the high electric conductive metal is made of at least one selected from copper, copper alloy, aluminum and aluminum alloy, the temperature rise of the battery can be suppressed more effectively. .
【００１９】さらにまた、極柱が電槽内部でアルカリ電
解液と接触する集電部分を耐アルカリ性の良好なニッケ
ル、ニッケル合金、鉄、鋼材から選ばれた少なくとも１
種以上とすることによって、集電部分からのアルカリ電
解液への溶解を防止でき、サイクル特性の向上をはかる
ことができる。Further, the current collecting portion where the pole pillar comes into contact with the alkaline electrolyte in the battery case is at least one selected from nickel, nickel alloy, iron and steel having good alkali resistance.
By using at least one kind, it is possible to prevent dissolution from the current collecting portion into the alkaline electrolyte and improve the cycle characteristics.
【００２０】[0020]
【実施例】以下、本発明を実施例に基づいて、さらに詳
細に説明するが、本発明は下記実施例に何ら限定される
ものではなく、その主旨を変更しない範囲において適宜
変更して、実施することが可能なものである。The present invention will be described in more detail based on the following examples, but the invention is not intended to be limited to the examples described below, and the invention can be carried out by appropriately modifying it within the scope of the invention. It is possible to do.
【００２１】［実施例１］図１に本発明電池の要部断面
斜視図を示す。１は焼結式ニッケル正極板で正極板上端
にニッケル製のタブをスポット溶接している。２は非焼
結式カドミウム負極板で負極板上端にニッケル製タブを
スポット溶接している。３は親水処理したポリプロピレ
ン不織布セパレータである。正極板１とセパレータ３と
負極板２とを積層して発電要素４とする。発電要素４は
最外周にセパレータ３が、その内側が負極板２となるよ
うに配置されている。５はポリプロピレン樹脂製の電槽
であり、この電槽５内に発電要素４を挿入する。[Embodiment 1] FIG. 1 shows a perspective sectional view of a main part of a battery of the present invention. Reference numeral 1 denotes a sintered nickel positive electrode plate, and a nickel tab is spot-welded to the upper end of the positive electrode plate. Reference numeral 2 is a non-sintered cadmium negative electrode plate, and a nickel tab is spot-welded to the upper end of the negative electrode plate. 3 is a polypropylene non-woven fabric separator subjected to hydrophilic treatment. The positive electrode plate 1, the separator 3 and the negative electrode plate 2 are laminated to form a power generating element 4. The power generation element 4 is arranged such that the separator 3 is provided at the outermost periphery and the inside thereof is the negative electrode plate 2. 5 is a polypropylene resin battery case into which the power generating element 4 is inserted.
【００２２】次に、正極タブと負極タブにそれぞれに極
柱８をスポット溶接する。この状態でポリプロピレン樹
脂製からなる封口板６を電槽開口端に載置し、熱溶着す
る。極柱８は封口板６に有する極柱貫通用の透孔を通し
て電槽内から電槽外に突出しており、クロロプレンゴム
製のＯ−リング９とナット１０とで固定される。Next, the pole columns 8 are spot-welded to the positive electrode tab and the negative electrode tab, respectively. In this state, the sealing plate 6 made of polypropylene resin is placed on the open end of the battery case and heat-welded. The pole 8 protrudes from the inside of the battery case to the outside of the battery case through a through hole for penetrating the electrode pole provided in the sealing plate 6, and is fixed by an O-ring 9 made of chloroprene rubber and a nut 10.
【００２３】封口板６には、着脱可能な安全弁７を備
え、封口板６を電槽５に熱溶着後、安全弁７の取り付け
用穴から、３０ｗｔ％の水酸化カリウム水溶液である電
解液を注液して、安全弁７を取り付ける。ここで安全弁
７は、アクリロニトリル−ブタジエン−スチレン樹脂製
からなるものである。The sealing plate 6 is provided with a removable safety valve 7, and after the sealing plate 6 is heat-welded to the battery case 5, an electrolyte solution which is a 30 wt% potassium hydroxide aqueous solution is poured from the mounting hole of the safety valve 7. Liquid and attach the safety valve 7. Here, the safety valve 7 is made of acrylonitrile-butadiene-styrene resin.
【００２４】図２に極柱８の断面図を示す。極柱８は、
端子部８１と集電部８２とからなり、端子部８１は長さ
３５ｍｍで、Ｍ１０のねじきりが施された銅により形成
されている。集電部８２はステンレス鋼からなり、端子
部８１を圧入するための直径１２ｍｍの凹部を有する台
座８４と、正極板または負極板からのタブを接続する電
極接続部８３とを有する。FIG. 2 shows a sectional view of the pole 8. The pole 8 is
The terminal portion 81 is composed of a terminal portion 81 and a current collecting portion 82. The terminal portion 81 has a length of 35 mm and is made of M10-twisted copper. The current collecting portion 82 is made of stainless steel, and has a pedestal 84 having a recess of 12 mm in diameter for press-fitting the terminal portion 81, and an electrode connecting portion 83 for connecting a tab from the positive electrode plate or the negative electrode plate.
【００２５】図３に極柱８を封口板６に固定した状態の
要部断面図を示す。図中、アルカリ電解液に接触する部
分を太線で示している。図３から判断できるように、本
発明では、電槽内でアルカリ電解液に接触する部分は、
集電部８２のみである。集電部８２は耐アルカリ性金属
であるステンレス鋼からなる。高電気導電性金属である
銅は、アルカリ電解液とは接触していない。従って、端
子部８１には、アルカリ水溶液に溶解しやすい銅または
アルミニウムでも使用することができる。このように、
本発明は高電気導電性金属を極柱に使用し、この高電気
導電性金属がアルカリ電解液と接触しないことが重要な
構成となる。FIG. 3 is a cross-sectional view of a main part in a state where the pole 8 is fixed to the sealing plate 6. In the figure, the portion in contact with the alkaline electrolyte is indicated by a thick line. As can be seen from FIG. 3, in the present invention, the portion in contact with the alkaline electrolyte in the battery case is
Only the current collector 82 is provided. The current collector 82 is made of stainless steel which is an alkali resistant metal. Copper, a highly electrically conductive metal, is not in contact with the alkaline electrolyte. Therefore, for the terminal portion 81, copper or aluminum which is easily dissolved in an alkaline aqueous solution can be used. in this way,
The present invention uses a highly electrically conductive metal for the poles, and it is important that this highly electrically conductive metal does not come into contact with the alkaline electrolyte.
【００２６】以上のようにして得られた電池を本発明電
池Ａ１とする。The battery thus obtained is referred to as Battery A1 of the invention.
【００２７】［実施例２］図４に他の実施例の極柱断面
図を示す。図２の極柱８と同形状をステンレス鋼で形成
し、その上部より銅棒圧入用の深さ３５ｍｍの穴を開
け、その穴に直径６ｍｍの銅棒８５を圧入して溶接し
て、極柱８ａを作製した。[Second Embodiment] FIG. 4 shows a sectional view of a pole column of another embodiment. The same shape as the pole 8 in FIG. 2 is formed of stainless steel, a hole with a depth of 35 mm for press-fitting a copper rod is opened from the upper portion, and a copper rod 85 having a diameter of 6 mm is press-fitted and welded to the pole. The pillar 8a was produced.
【００２８】このように極柱を構成した場合、高電気導
電性金属となる銅棒は、アルカリ電解液とは接触してい
ない。When the pole column is constructed in this way, the copper rod, which is a highly electrically conductive metal, is not in contact with the alkaline electrolyte.
【００２９】この極柱８ａを使用する以外は、実施例１
と同様にして、電池を作製し、これを本発明電池Ａ２と
する。Example 1 except that this pole 8a is used
A battery was prepared in the same manner as in 1. and was used as a battery A2 of the invention.
【００３０】［実施例３］極柱の端子部８１にアルミニ
ウムを使用する以外は、実施例１と同様にして、電池を
作製し、これを本発明電池Ａ３とする。[Example 3] A battery was prepared in the same manner as in Example 1 except that aluminum was used for the terminal portion 81 of the pole, and this was designated as Battery A3 of the invention.
【００３１】［実施例４］銅棒８５の代わりにアルミニ
ウム棒を使用する以外は、実施例２と同様にして、電池
を作製し、これを本発明電池Ａ４とする。Example 4 A battery was prepared in the same manner as in Example 2 except that an aluminum rod was used instead of the copper rod 85, and this battery was designated as Battery A4 of the invention.
【００３２】［比較例１］実施例１に使用した極柱８の
端子部及び集電部共にステンレス鋼にする以外は、実施
例１と同様にして、電池を作製し、これを比較電池Ｘ１
とする。[Comparative Example 1] A battery was prepared in the same manner as in Example 1 except that the terminal portion and the current collecting portion of the pole 8 used in Example 1 were made of stainless steel.
And
【００３３】［比較例２］実施例１に使用した極柱８の
端子部及び集電部共に銅製にする以外は、実施例１と同
様にして、電池を作製し、これを比較電池Ｘ２とする。[Comparative Example 2] A battery was prepared in the same manner as in Example 1 except that both the terminal portion and the current collecting portion of the pole 8 used in Example 1 were made of copper. To do.
【００３４】［比較例３］実施例１に使用した極柱８の
端子部及び集電部共にアルミニウム製にする以外は、実
施例１と同様にして、電池を作製し、これを比較電池Ｘ
３とする。[Comparative Example 3] A battery was prepared in the same manner as in Example 1 except that both the terminal portion and the current collecting portion of the pole 8 used in Example 1 were made of aluminum.
Set to 3.
【００３５】［比較例４］比較例２に使用した極柱の表
面をニッケルメッキする以外は、比較例２と同様にし
て、電池を作製し、これを比較電池Ｘ４とする。[Comparative Example 4] A battery was prepared in the same manner as in Comparative Example 2 except that the surface of the pole used in Comparative Example 2 was plated with nickel, and this was designated as Comparative Battery X4.
【００３６】〔実験１〕本発明電池Ａ１〜Ａ４及び比較
電池Ｘ１〜Ｘ４を２０℃の雰囲気下で、１００Ａの電流
で充電した場合の極柱の温度上昇を測定した。[Experiment 1] The temperature rises of the poles of the batteries A1 to A4 of the present invention and the comparative batteries X1 to X4 were measured at a current of 100 A under an atmosphere of 20 ° C.
【００３７】この結果を図５に示す。図５からも判るよ
うに、極柱の集電部及び端子部共にステンレス鋼にした
比較電池Ｘ１の温度は急激に上昇していることが判る。The results are shown in FIG. As can be seen from FIG. 5, it can be seen that the temperature of the comparative battery X1 in which both the current collecting portion and the terminal portion of the pole column are made of stainless steel is rapidly rising.
【００３８】しかしながら、集電部にステンレスを使用
して、端子部には銅またはアルミニウムを使用した本発
明電池Ａ１〜Ａ４は、極柱の温度上昇を抑制している。However, in the batteries A1 to A4 of the present invention in which stainless steel is used for the current collecting portion and copper or aluminum is used for the terminal portion, the temperature rise of the poles is suppressed.
【００３９】この理由は、銅及びアルミニウムの電気伝
導性がステンレスに比べ良好であり、その電気伝導性の
良好な銅又はアルミニウムを極柱の端子部の一部に使用
しているので、大電流を通電しても極柱自身の発熱量が
小さいからである。The reason for this is that the electric conductivity of copper and aluminum is better than that of stainless steel, and since copper or aluminum, which has good electric conductivity, is used for a part of the terminal portion of the pole, a large current can be obtained. This is because the amount of heat generated by the pole column itself is small even when electricity is applied.
【００４０】〔実験２〕次に、本発明電池Ａ１〜Ａ４及
び比較電池Ｘ１〜Ｘ４を３３Ａの電流で４．５時間充電
した後、３３Ａの電流で電池電圧が１．０Ｖに達するま
で放電するという一連のサイクルを繰り返し行った。こ
の結果を図６に示す。[Experiment 2] Next, the batteries A1 to A4 of the present invention and the comparative batteries X1 to X4 were charged with a current of 33 A for 4.5 hours and then discharged with a current of 33 A until the battery voltage reached 1.0 V. This cycle was repeated. The result is shown in FIG.
【００４１】図６から、比較電池Ｘ１は、本発明電池Ａ
１〜Ａ４、比較電池Ｘ２〜Ｘ４と比べて、初期の放電容
量が小さいことが判る。これは、比較電池Ｘ１は、極柱
が充電中に発熱して、電池温度が他の電池よりも上昇す
るので、充電効率が低下したからであると考えられる。From FIG. 6, the comparative battery X1 is the battery A of the present invention.
1 to A4 and the comparative batteries X2 to X4, the initial discharge capacity is small. This is considered to be because the comparative battery X1 has a lower charging efficiency because the poles generate heat during charging and the battery temperature rises more than other batteries.
【００４２】又、サイクル数が増加するに伴って、比較
電池Ｘ２〜Ｘ４は放電容量が低下していることが判る。
これは、比較電池Ｘ２は、アルカリ電解液と接触する部
分に銅を使用しているために、銅が電解液に溶解して、
デンドライトを発生して、サイクル特性が劣化したと考
えられる。Further, it can be seen that the discharge capacities of the comparative batteries X2 to X4 decrease as the number of cycles increases.
This is because the comparative battery X2 uses copper in the portion that comes into contact with the alkaline electrolyte, so that copper is dissolved in the electrolyte,
It is considered that dendrite was generated and cycle characteristics were deteriorated.
【００４３】また、比較電池Ｘ３のサイクル特性劣化の
原因は、活物質表面に発生した不働体膜のために、活物
質の不活性化が生じたと考えられる。Further, it is considered that the cause of the deterioration of the cycle characteristics of the comparative battery X3 is the inactivation of the active material due to the passivation film generated on the surface of the active material.
【００４４】さらに、比較電池Ｘ４は、極柱表面にニッ
ケルメッキを行っているが、ピンホール、傷、メッキの
剥がれ等によって銅が表面に露出して、上記比較例２と
同様にサイクル特性が劣化したと考えられる。Further, in Comparative Battery X4, the pole surface was plated with nickel, but copper was exposed on the surface due to pinholes, scratches, peeling of plating, etc., and the cycle characteristics were the same as in Comparative Example 2 above. It is considered to have deteriorated.
【００４５】以上、本発明電池Ａ１〜Ａ４は、大電流に
よる電池の温度上昇を抑制することができ、サイクル数
増加における容量低下も防止することができ、サイクル
特性を向上することが可能である。As described above, the batteries A1 to A4 of the present invention can suppress the temperature rise of the battery due to a large current, can prevent the capacity decrease due to the increase in the number of cycles, and can improve the cycle characteristics. .
【００４６】尚、本発明電池に使用された極柱は、銅、
アルミニウムを端子部としたが、端子部としては、銅、
アルミニウム以外に銅合金またはアルミニウム合金等の
高電気導電性金属でも本発明と同様の効果が得られる。
ここで、銅合金、アルミニウム合金とは、銅、アルミニ
ウムを少なくとも主成分の一つとする金属のことであ
る。The poles used in the battery of the present invention are copper,
Aluminum was used as the terminal part, but as the terminal part, copper,
In addition to aluminum, the same effect as in the present invention can be obtained with a highly electrically conductive metal such as a copper alloy or an aluminum alloy.
Here, the copper alloy and the aluminum alloy are metals containing at least one of copper and aluminum as main components.
【００４７】又、集電部としての耐アルカリ性金属とし
て、本発明はステンレス鋼を使用したが、ニッケル、ニ
ッケル合金、鉄等を使用しても本発明と同様の効果を得
ることができる。Although the present invention uses stainless steel as the alkali resistant metal as the current collector, the same effects as those of the present invention can be obtained by using nickel, nickel alloy, iron or the like.
【００４８】さらに、本発明電池は、極柱の封口板との
固定において、気密封止としてＯ−リングを使用した
が、他にパッキング、シール剤、集電部と封口板との一
体成形のような構造等でも、本発明と同様な効果が得ら
れる。Further, in the battery of the present invention, an O-ring was used as an airtight seal for fixing the pole post to the sealing plate. Even with such a structure, the same effect as the present invention can be obtained.
【００４９】さらにまた、本発明で使用した極柱の表面
を外観上の理由などでニッケルメッキを行っても、なん
ら電池特性には影響を与えないので、本発明と同様な効
果を得ることができる。Furthermore, even if the surface of the pole used in the present invention is nickel-plated for reasons such as appearance, it has no effect on the battery characteristics, so that the same effect as the present invention can be obtained. it can.
【００５０】[0050]
【発明の効果】本発明は、アルカリ蓄電池の極柱が、高
電気伝導性金属と、メッキ処理以外で形成された耐アル
カリ性金属とよりなり、前記高電気伝導性金属は前記ア
ルカリ性電解液と接触せず、かつ前記耐アルカリ性金属
は発電要素と電気的に接続されているので、大電流によ
る充電時においても電池温度が上昇することなく、充電
効率も低下することがないので、良好なサイクル特性を
得ることができる。According to the present invention, the pole column of the alkaline storage battery is made of a highly electrically conductive metal and an alkali resistant metal formed by a method other than plating, and the highly electrically conductive metal is in contact with the alkaline electrolyte. Without, and since the alkali resistant metal is electrically connected to the power generating element, the battery temperature does not rise even when charging with a large current, and the charging efficiency does not decrease, so good cycle characteristics Can be obtained.
【図１】本発明電池の要部断面斜視図である。FIG. 1 is a cross-sectional perspective view of a main part of a battery of the present invention.
【図２】本発明電池の極柱の断面図である。FIG. 2 is a cross-sectional view of a pole of a battery of the present invention.
【図３】本発明電池の要部断面図である。FIG. 3 is a cross-sectional view of a main part of the battery of the present invention.
【図４】本発明電池の他の実施例の極柱断面図である。FIG. 4 is a sectional view of a pole of another embodiment of the battery of the present invention.
【図５】電池の極柱温度と時間との関係を示す図であ
る。FIG. 5 is a diagram showing a relationship between a temperature of a pole of a battery and time.
【図６】放電容量とサイクル数との関係を示す図であ
る。FIG. 6 is a diagram showing the relationship between discharge capacity and the number of cycles.
１・・・・・・・・・・・・・・・正極 ２・・・・・・・・・・・・・・・負極 ３・・・・・・・・・・・・・・・セパレータ ４・・・・・・・・・・・・・・・発電要素 ８、８ａ・・・・・・・・・・・・極柱 ８１・・・・・・・・・・・・・・端子部 ８２・・・・・・・・・・・・・・集電部 Ａ１、Ａ２、Ａ３、Ａ４・・・・・本発明電池 Ｘ１、Ｘ２、Ｘ３、Ｘ４・・・・・比較電池 1 ・ ・ ・ ・ ・ ・ ・ ・ Positive electrode 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Negative electrode 3 ・ ・ ・ ・ ・ ・ ・ ・Separator 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Power generation element 8, 8a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Pole pole 81 ・ ・ ・ ・ ・ ・ ・ ・・ Terminal portion 82 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Current collecting portion A1, A2, A3, A4 ・ ・ ・ Battery of the present invention X1, X2, X3, X4 ・ ・ ・ Comparative battery
Claims (3)
発電要素を電槽に挿入し、該電槽内にアルカリ性電解液
を注液した蓄電池において、前記発電要素と電気的に接
続する極柱を備え、該極柱は、高電気伝導性金属と、メ
ッキ処理以外で形成された耐アルカリ性金属とよりな
り、前記高電気伝導性金属は前記アルカリ性電解液と接
触せず、かつ前記耐アルカリ性金属は発電要素と電気的
に接続されていることを特徴とするアルカリ蓄電池。1. In a storage battery in which a power generating element including a positive electrode, a negative electrode, and a separator is inserted into a battery case, and an alkaline electrolyte is injected into the battery case, a pole column electrically connected to the power generating element. Wherein the pole is made of a highly electrically conductive metal and an alkali resistant metal formed by a method other than plating, the highly electrically conductive metal does not come into contact with the alkaline electrolyte, and the alkaline resistant metal. Is an alkaline storage battery characterized by being electrically connected to a power generation element.
アルミニウム、アルミニウム合金から選ばれた少なくと
も１種類以上からなることを特徴とする請求項１記載の
アルカリ蓄電池。2. The high electrical conductivity metal is copper, copper alloy,
The alkaline storage battery according to claim 1, comprising at least one selected from aluminum and aluminum alloys.
ケル合金、鉄、鋼材から選ばれた少なくとも１種類以上
からなることを特徴とする請求項１記載のアルカリ蓄電
池。3. The alkaline storage battery according to claim 1, wherein the alkali resistant metal is at least one selected from nickel, nickel alloys, iron, and steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6300963A JPH08162092A (en) | 1994-12-05 | 1994-12-05 | Alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6300963A JPH08162092A (en) | 1994-12-05 | 1994-12-05 | Alkaline storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08162092A true JPH08162092A (en) | 1996-06-21 |
Family
ID=17891187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6300963A Pending JPH08162092A (en) | 1994-12-05 | 1994-12-05 | Alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08162092A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100466767B1 (en) * | 1998-09-02 | 2005-01-24 | 산요덴키가부시키가이샤 | Lithium Secondary Cell |
| FR2875056A1 (en) * | 2004-09-07 | 2006-03-10 | Accumulateurs Fixes | ACCUMULATOR HAVING TWO CURRENT OUTPUT TERMINALS ON A WALL OF ITS CONTAINER |
| US8309246B2 (en) | 2010-10-25 | 2012-11-13 | Sb Limotive Co., Ltd. | Terminal of rechargeable battery and method of manufacturing the same |
| US9537135B2 (en) | 2010-07-21 | 2017-01-03 | Samsung Sdi Co., Ltd. | Terminal of rechargeable battery and method of manufacturing the same |
-
1994
- 1994-12-05 JP JP6300963A patent/JPH08162092A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100466767B1 (en) * | 1998-09-02 | 2005-01-24 | 산요덴키가부시키가이샤 | Lithium Secondary Cell |
| FR2875056A1 (en) * | 2004-09-07 | 2006-03-10 | Accumulateurs Fixes | ACCUMULATOR HAVING TWO CURRENT OUTPUT TERMINALS ON A WALL OF ITS CONTAINER |
| EP1653530A1 (en) * | 2004-09-07 | 2006-05-03 | Saft | Secondary battery with two current terminals on a side of the casing |
| US9537135B2 (en) | 2010-07-21 | 2017-01-03 | Samsung Sdi Co., Ltd. | Terminal of rechargeable battery and method of manufacturing the same |
| US8309246B2 (en) | 2010-10-25 | 2012-11-13 | Sb Limotive Co., Ltd. | Terminal of rechargeable battery and method of manufacturing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100511770C (en) | Sealed cell, manufacturing method thereof, and battery formed by a plurality of sealed cells | |
| KR100375903B1 (en) | Alkaline Battery and Method for Preparing the Same | |
| JP4031620B2 (en) | Nickel metal hydride storage battery and method of using the same | |
| JP4062388B2 (en) | Alkaline storage battery | |
| KR101956457B1 (en) | Regeneration method of nickel-hydrogen battery | |
| JPH08162092A (en) | Alkaline storage battery | |
| JP7193420B2 (en) | Nickel-metal hydride secondary battery manufacturing method | |
| CN1163999C (en) | Alkaline storage bettery with scroll electrode body | |
| JP2020198187A (en) | Secondary battery manufacturing method, and nickel hydrogen secondary battery | |
| JP3515286B2 (en) | Electrodes for secondary batteries | |
| JP4242953B2 (en) | Manufacturing method of battery pack | |
| JP2007280743A (en) | Cylindrical storage battery | |
| JP4904609B2 (en) | Secondary battery | |
| JP2006236967A (en) | Sealed battery, its manufacturing method, battery pack composed of multiple sealed batteries, and its manufacturing method | |
| JP3524744B2 (en) | Sealed alkaline storage battery | |
| JP3619706B2 (en) | Storage battery | |
| JP3913384B2 (en) | Alkaline storage battery | |
| JPS60167277A (en) | Lead-acid battery | |
| JP2925671B2 (en) | Nickel-hydrogen storage battery charging method | |
| JP2004055371A (en) | Cylindrical battery and connection structure between batteries using the same | |
| JP2008288217A (en) | Alkaline accumulator | |
| JP2009245771A (en) | Alkaline storage battery and method of manufacturing the same | |
| JPH11339846A (en) | Sealed alkaline zinc storage battery | |
| JP3057737B2 (en) | Sealed alkaline storage battery | |
| JPH1186897A (en) | Sealed nickel hydrogen battery |