JP3157226B2 - Alkaline storage battery - Google Patents
Alkaline storage batteryInfo
- Publication number
- JP3157226B2 JP3157226B2 JP30869291A JP30869291A JP3157226B2 JP 3157226 B2 JP3157226 B2 JP 3157226B2 JP 30869291 A JP30869291 A JP 30869291A JP 30869291 A JP30869291 A JP 30869291A JP 3157226 B2 JP3157226 B2 JP 3157226B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- separator
- batteries
- electrolyte
- height
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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
-
- 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
- Cell Separators (AREA)
- Secondary Cells (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は二次電池に関し、特に据
え置きタイプの大型のアルカリ蓄電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a secondary battery, and more particularly to a stationary alkaline battery .
【０００２】[0002]
【従来の技術】上記二次電池としては、鉛蓄電池、亜鉛
蓄電池、及び金属−水素アルカリ蓄電池等が提案されて
いるが、近年、これら電池が使用される機器の多様化に
伴って、上記二次電池の大型化が望まれている。この場
合、前記金属−水素アルカリ蓄電池は、水素吸蔵合金自
身の可逆性が優れるという利点及びデンドライトショー
トの危険性が無いという利点を有しているため、上記二
次電池の大型化に適している。2. Description of the Related Art Lead storage batteries, zinc storage batteries, metal-hydrogen alkaline storage batteries, and the like have been proposed as the above secondary batteries. In recent years, with the diversification of equipment in which these batteries are used, the above secondary batteries have been proposed. It is desired to increase the size of secondary batteries. In this case, the metal-hydrogen alkaline storage battery has an advantage that the reversibility of the hydrogen storage alloy itself is excellent and an advantage that there is no danger of dendrite short-circuit, and thus is suitable for increasing the size of the secondary battery. .
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記二次電
池の構造は、大型，小型を問わず、正極と負極との間に
電解液が含浸されたセパレータが介装されるような構造
となっているのが一般的である。この場合、小型の電池
や大型であってもセパレータが重力場の影響を受けない
方向に配置されている電池（セパレータが地表と平行に
配置されている電池）では問題は生じないが、セパレー
タが地表と垂直に配置され且つ大型の電池（所謂、据置
型の大型電池）では、重力場の影響により、セパレータ
の上部における電解液の保液量と下部における電解液の
保液量とに差異が生じることになる。この結果、高率放
電特性やサイクル特性が低下するといった課題を有して
いた。The structure of the above secondary battery, whether large or small, is such that a separator impregnated with an electrolyte is interposed between the positive electrode and the negative electrode. That is common. In this case, there is no problem with a small battery or a large battery in which the separator is arranged in a direction not affected by the gravitational field (a battery in which the separator is arranged parallel to the ground surface). In a large-sized battery arranged vertically to the surface of the ground (a so-called stationary large-sized battery), due to the influence of the gravitational field, the difference between the amount of electrolyte held at the upper part of the separator and the amount of electrolyte held at the lower part of the separator is different. Will happen. As a result, there has been a problem that high-rate discharge characteristics and cycle characteristics are deteriorated.
【０００４】本発明は係る現状を考慮してなされたもの
であって、据置型の大型電池であっても高率放電特性や
サイクル特性を向上させることができるアルカリ蓄電池
の提供を目的としている。The present invention has been made in view of the above situation, and provides an alkaline storage battery capable of improving high-rate discharge characteristics and cycle characteristics even for a stationary large battery. The purpose is.
【０００５】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するために、電池の高さ方向に延びるセパレータを有
し、且つこのセパレータに含浸されたＫＯＨを含む電解
液の液量が制限されると共に、上記セパレータの高さが
電解液の表面張力が十分に及ばない高さとなるよう構成
されたアルカリ蓄電池において、電池高さが１０ｃｍ以
上であり、前記アルカリ電解液の液量が３．５ｇ／Ａｈ
以下であって、前記セパレータは２以上に分割され、且
つ下部に位置するセパレータから上部に位置するセパレ
ータにいくにつれて前記電解液の保液性が優れるように
構成されていることを特徴とする。In order to achieve the above object, the present invention has a separator which extends in the height direction of a battery, and the amount of an electrolyte containing KOH impregnated in the separator is limited. In addition, in an alkaline storage battery configured such that the height of the separator is not high enough to satisfy the surface tension of the electrolyte, the height of the battery is 10 cm or less.
And the amount of the alkaline electrolyte is 3.5 g / Ah.
In the following, the separator is divided into two or more parts, and the separator is configured so that the liquid retaining property of the electrolytic solution becomes more excellent from the separator located at the lower part to the separator located at the upper part.
【０００６】[0006]
【作用】上記構成であれば、据置型の大型のアルカリ蓄
電池であってもセパレータの上部と下部との間で電解液
の保液量が異なることを抑制することができる。この結
果、高率放電特性やサイクル特性を向上させることが可
能となる。With the above construction, a stationary large-sized alkaline storage is provided.
Even in the case of a battery , it is possible to suppress a difference in the amount of electrolyte retained between the upper part and the lower part of the separator. As a result, it is possible to improve high rate discharge characteristics and cycle characteristics.
【０００７】[0007]
【実施例】本発明の一実施例を、図１〜図４に基づい
て、以下に説明する。 〔実施例１〕図１は本発明の一実施例に係る据置型ニッ
ケル−水素アルカリ蓄電池の部分断面斜視図であり、電
池缶１内には、焼結式ニッケルから成る正極２と、水素
吸蔵合金を含む負極３とが交互に重ねられており、且つ
これら正負両極２・３と正負両極２・３間に介挿された
セパレータ４とから成る電極群５が設けられている。そ
して、この電極群５はそれぞれ絶縁シート６に囲まれて
いる。また、上記電池缶１の上面１ａには、正極端子７
と安全弁８と負極端子９とが設けられており、正極端子
７は上記正極２と、負極端子９は上記負極３とそれぞれ
接続されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Embodiment 1 FIG. 1 is a partial cross-sectional perspective view of a stationary nickel-hydrogen alkaline storage battery according to one embodiment of the present invention. In a battery can 1, a positive electrode 2 made of sintered nickel and a hydrogen storage Negative electrodes 3 containing an alloy are alternately stacked, and an electrode group 5 including positive and negative electrodes 2.3 and a separator 4 interposed between the positive and negative electrodes 2.3 is provided. Each of the electrode groups 5 is surrounded by an insulating sheet 6. A positive electrode terminal 7 is provided on the upper surface 1a of the battery can 1.
A safety valve 8 and a negative electrode terminal 9 are provided. The positive terminal 7 is connected to the positive electrode 2, and the negative terminal 9 is connected to the negative electrode 3.
【０００８】ここで、前記セパレータ４は、図２に示す
ように、上部セパレータ４ａと下部セパレータ４ｂとに
分割されている。上記上部セパレータ４ａは、下記表１
に示すように、ポリプロピレン（繊維径：５μｍ，厚み
０．１ｍｍ）から成り締付圧が１ｋｇ／ｃｍ2 となるよ
うに構成される一方、上記下部セパレータ４ｂはポリプ
ロピレン（繊維径：１５μｍ，厚み０．１ｍｍ）から成
り締付圧が１ｋｇ／ｃｍ2 となるように構成される。即
ち、本実施例１では、上部セパレータ４ａと下部セパレ
ータ４ｂとの繊維径を異ならしめている。Here, as shown in FIG. 2, the separator 4 is divided into an upper separator 4a and a lower separator 4b. The upper separator 4a is shown in Table 1 below.
As shown in FIG. 5, the lower separator 4b is made of polypropylene (fiber diameter: 15 μm, thickness 0 mm) while being made of polypropylene (fiber diameter: 5 μm, thickness 0.1 mm) so as to have a tightening pressure of 1 kg / cm 2. .1 mm) so that the tightening pressure is 1 kg / cm 2 . That is, in the first embodiment, the fiber diameters of the upper separator 4a and the lower separator 4b are different.
【０００９】また、セパレータ４には、３０％のＫＯＨ
溶液（比重１．２９，表面張力０．０９Ｎ／ｍ）が含浸
されている。このような構造の電池を、以下（Ａ1 ）電
池と称する。The separator 4 has 30% KOH.
The solution (specific gravity 1.29, surface tension 0.09 N / m) is impregnated. The battery having such a structure is hereinafter referred to as (A 1 ) battery.
【００１０】[0010]
【表１】 [Table 1]
【００１１】〔実施例２〕上記表１に示すように、上部
セパレータ４ａの繊維径を１５μｍとし且つ厚みを０．
２μｍとする他は、上記実施例１の電池と同様の構造で
ある。即ち、本実施例２では、上部セパレータ４ａと下
部セパレータ４ｂとの厚みを異ならしめている。Example 2 As shown in Table 1, the upper separator 4a had a fiber diameter of 15 μm and a thickness of 0.1 μm.
The structure is the same as that of the battery of Example 1 except that the thickness is 2 μm. That is, in the second embodiment, the thicknesses of the upper separator 4a and the lower separator 4b are different.
【００１２】このような構造の電池を、以下（Ａ2 ）電
池と称する。 〔実施例３〕上記表１に示すように、上部セパレータ４
ａの繊維径を１５μｍとし且つ締付圧を１．５ｋｇ／ｃ
ｍ2 とする他は、上記実施例１の電池と同様の構造であ
る。即ち、本実施例３では、上部セパレータ４ａと下部
セパレータ４ｂとの締付圧を異ならしめている。A battery having such a structure is hereinafter referred to as an (A 2 ) battery. Example 3 As shown in Table 1 above, the upper separator 4
The fiber diameter of a is 15 μm and the tightening pressure is 1.5 kg / c.
The structure is the same as that of the battery of Example 1 except that m 2 is used. That is, in the third embodiment, the tightening pressures of the upper separator 4a and the lower separator 4b are different.
【００１３】このような構造の電池を、以下（Ａ3 ）電
池と称する。 〔実施例４〕上記表１に示すように、上部セパレータ４
ａの繊維径を１５μｍとし且つナイロンから構成する他
は、上記実施例１の電池と同様の構造である。即ち、本
実施例４では、上部セパレータ４ａと下部セパレータ４
ｂとの材質を異ならしめている。A battery having such a structure is hereinafter referred to as a battery (A 3 ). Example 4 As shown in Table 1 above, the upper separator 4
It has the same structure as that of the battery of Example 1 except that the fiber diameter of a is 15 μm and is made of nylon. That is, in the fourth embodiment, the upper separator 4a and the lower separator 4
The material is different from b.
【００１４】このような構造の電池を、以下（Ａ4 ）電
池と称する。 〔比較例１〕上記表１に示すように、上部セパレータ４
ａの繊維径を１５μｍとして、上部セパレータ４ａと下
部セパレータ４ｂとを同一の構成とする他は上記実施例
１の電池と同様の構造である。The battery having such a structure is hereinafter referred to as (A 4 ) battery. Comparative Example 1 As shown in Table 1 above, the upper separator 4
The structure is the same as that of the battery of Example 1 except that the fiber diameter of a is 15 μm and the upper separator 4a and the lower separator 4b have the same configuration.
【００１５】このような構造の電池を、以下（Ｘ1 ）電
池と称する。 〔比較例２〕上記表１に示すように、下部セパレータ４
ｂの繊維径を５μｍとして、上部セパレータ４ａと下部
セパレータ４ｂとを同一の構成とする他は上記実施例１
の電池と同様の構造である。The battery having such a structure is hereinafter referred to as (X 1 ) battery. Comparative Example 2 As shown in Table 1 above, the lower separator 4
Example 1 except that the fiber diameter of b was 5 μm and the upper separator 4a and the lower separator 4b had the same configuration.
Has the same structure as that of the battery.
【００１６】このような構造の電池を、以下（Ｘ2 ）電
池と称する。 〔比較例３〕上記表１に示すように、下部セパレータ４
ｂの厚みを０．２ｍｍとして、上部セパレータ４ａと下
部セパレータ４ｂとを同一の構成とする他は上記実施例
２の電池と同様の構造である。A battery having such a structure is hereinafter referred to as an (X 2 ) battery. Comparative Example 3 As shown in Table 1, the lower separator 4
The structure is the same as that of the battery of Example 2 except that the thickness of b is 0.2 mm and the upper separator 4a and the lower separator 4b have the same configuration.
【００１７】このような構造の電池を、以下（Ｘ3 ）電
池と称する。 〔比較例４〕上記表１に示すように、下部セパレータ４
ｂの締付圧を１．５ｋｇ／ｃｍ2 として、上部セパレー
タ４ａと下部セパレータ４ｂとを同一の構成とする他は
上記実施例３の電池と同様の構造である。The battery having such a structure is hereinafter referred to as (X 3 ) battery. Comparative Example 4 As shown in Table 1 above, the lower separator 4
This battery has the same structure as that of the battery of the third embodiment except that the upper separator 4a and the lower separator 4b have the same structure, with the tightening pressure of b being 1.5 kg / cm 2 .
【００１８】このような構造の電池を、以下（Ｘ4 ）電
池と称する。 〔比較例５〕上記表１に示すように、下部セパレータ４
ｂの材質をナイロンとして、上部セパレータ４ａと下部
セパレータ４ｂとを同一の構成とする他は上記実施例４
の電池と同様の構造である。The battery having such a structure is hereinafter referred to as (X 4 ) battery. Comparative Example 5 As shown in Table 1, the lower separator 4
Example 4 except that the material of b is nylon and the upper separator 4a and the lower separator 4b have the same configuration.
Has the same structure as that of the battery.
【００１９】このような構造の電池を、以下（Ｘ5 ）電
池と称する。 〔実験１〕上記本発明の（Ａ1 ）電池〜（Ａ4 ）電池及
び比較例の（Ｘ1 ）電池〜（Ｘ5 ）電池の電池高さを変
化させて、下部セパレータ４ｂの保液率、上部セパレー
タ４ａの保液率、高率放電特性、及びサイクル特性を調
べたので、それらの結果を図３に示す。尚、本実験１に
際し、電解液の液量は２．５ｇ／Ａｈとなるように設定
している。また、高率放電特性の実験条件は、電流０．
２Ｃで電池容量の１２０％まで充電した後、電流２Ｃで
電池電圧が１．０Ｖとなるまで放電するという条件であ
る。そして、図３においては０．２Ｃで放電したときの
電池容量に対する百分率を示している。更に、サイクル
特性の実験条件は、電流１Ｃで電池容量の１２０％まで
充電した後、電流１Ｃで電池電圧が１．０Ｖとなるまで
放電するという条件である。The battery having such a structure is hereinafter referred to as (X 5 ) battery. Experiment 1 above of the present invention (A 1) cell ~ (A 4) of the battery and Comparative Example (X 1) cell ~ (X 5) by changing the cell height of the battery, the liquid retention ratio of the lower separator 4b The liquid retention, high-rate discharge characteristics, and cycle characteristics of the upper separator 4a were examined, and the results are shown in FIG. In this experiment 1, the amount of the electrolytic solution was set to be 2.5 g / Ah. The experimental conditions for the high-rate discharge characteristics are as follows.
The condition is that the battery is charged to 120% of the battery capacity at 2C, and then discharged until the battery voltage reaches 1.0 V at 2C. FIG. 3 shows the percentage of the battery capacity when discharged at 0.2 C. Furthermore, the experimental conditions of the cycle characteristics are such that after charging to 120% of the battery capacity at a current of 1 C, the battery is discharged at a current of 1 C until the battery voltage becomes 1.0 V.
【００２０】図３から明らかなように、電池高さが７．
５ｃｍ以下であれば、本発明の（Ａ 1 ）電池〜（Ａ4 ）
電池と比較例の（Ｘ1 ）電池〜（Ｘ5 ）電池とにおける
高率放電特性及びサイクル特性に差異は見られないが、
電池高さが１０ｃｍ以上になると、（Ａ1 ）電池〜（Ａ
4 ）電池は比較例の（Ｘ1 ）電池〜（Ｘ5 ）電池に比べ
て、高率放電特性及びサイクル特性に優れていることが
認められる。As is apparent from FIG.
If it is 5 cm or less, (A) of the present invention 1) Battery ~ (AFour)
The battery and the comparative example (X1) Battery ~ (XFive) With battery
No difference is seen in high rate discharge characteristics and cycle characteristics,
When the battery height exceeds 10 cm, (A1) Battery ~ (A
Four) The battery of Comparative Example (X)1) Battery ~ (XFive) Compared to batteries
It has excellent high rate discharge characteristics and cycle characteristics.
Is recognized.
【００２１】これは、図３に示すように、電池高さが
７．５ｃｍ以下であれば、本発明の（Ａ1 ）電池〜（Ａ
4 ）電池のみならず比較例の（Ｘ1 ）電池〜（Ｘ5 ）電
池であっても、上部セパレータ４ａと下部セパレータ４
ｂとの間で電解液の保液率に余り差異が認められない。
しかしながら、電池高さが１０ｃｍ以上になると、本発
明の（Ａ1 ）電池〜（Ａ4 ）電池では、下部セパレータ
４ｂと上部セパレータ４ａとで電解液の保液率に余り差
異が認められないのに対して、比較例の（Ｘ1）電池〜
（Ｘ5 ）電池では上部セパレータ４ａの保液率が下部セ
パレータ４ｂの保液率に比べて極めて低くなっていると
いう理由によるものと考えられる。 〔実験２〕上記本発明の（Ａ1 ）電池〜（Ａ4 ）電池及
び比較例の（Ｘ1 ）電池〜（Ｘ5 ）電池の電解液の液量
を変化させて、下部セパレータ４ｂの保液率、上部セパ
レータ４ａの保液率、高率放電特性、及びサイクル特性
を調べたので、それらの結果を図４に示す。尚、本実験
２に際し、電池高さは１０ｃｍとなるように設定してい
る。また、高率放電特性及びサイクル特性の実験条件
は、上記実験１と同様の条件である。As shown in FIG. 3, when the battery height is 7.5 cm or less, the batteries (A 1 ) to (A
4 ) Not only the batteries but also the (X 1 ) to (X 5 ) batteries of the comparative examples, the upper separator 4 a and the lower separator 4
There is little difference in the retention rate of the electrolytic solution between b and b.
However, when the battery height is 10 cm or more, in the batteries (A 1 ) to (A 4 ) of the present invention, there is little difference in the electrolyte retention between the lower separator 4 b and the upper separator 4 a. On the other hand, the (X 1 ) battery of Comparative Example
(X 5 ) It is considered that the reason is that in the battery, the liquid retention of the upper separator 4a is extremely lower than the liquid retention of the lower separator 4b. [Experiment 2] The amount of the electrolytic solution of the (A 1 ) to (A 4 ) batteries of the present invention and the (X 1 ) to (X 5 ) batteries of the comparative example was changed to maintain the lower separator 4 b. The liquid ratio, the liquid retention ratio of the upper separator 4a, the high-rate discharge characteristics, and the cycle characteristics were examined, and the results are shown in FIG. In this experiment 2, the height of the battery was set to 10 cm. The experimental conditions for the high-rate discharge characteristics and the cycle characteristics are the same as those in Experiment 1.
【００２２】図４から明らかなように、電解液の液量が
４．０ｇ／Ａｈであれば、本発明の（Ａ1 ）電池〜（Ａ
4 ）電池と比較例の（Ｘ1 ）電池〜（Ｘ5 ）電池とにお
ける高率放電特性及びサイクル特性に差異は見られない
が、電解液の液量が３．５ｇ／Ａｈ以下になると、（Ａ
1 ）電池〜（Ａ4 ）電池は比較例の（Ｘ1 ）電池〜（Ｘ
5 ）電池に比べて、高率放電特性及びサイクル特性に優
れていることが認められる。As is apparent from FIG. 4, if the amount of the electrolytic solution is 4.0 g / Ah, the batteries (A 1 ) to (A
4) of Comparative Example battery (X 1) cell ~ (X 5) differences in high-rate discharge characteristics and cycle characteristics in the battery is not observed, the amount of liquid electrolyte is below 3.5 g / Ah, (A
1 ) Batteries to (A 4 ) Batteries are (X 1 ) Batteries to (X
5 ) It is recognized that the battery has excellent high-rate discharge characteristics and cycle characteristics as compared with batteries.
【００２３】これは、図４に示すように、電解液の液量
が４．０ｇ／Ａｈであれば、本発明の（Ａ1）電池〜
（Ａ4）電池のみならず比較例の（Ｘ1）電池〜（Ｘ5）
電池であっても、上部セパレータ４ａと下部セパレータ
４ｂとで電解液の保液率に余り差異が認められない。し
かしながら、電解液の液量が３．５ｇ／Ａｈ以下になる
と、本発明の（Ａ1）電池〜（Ａ4）電池では、下部セパ
レータ４ｂと上部セパレータ４ａとで電解液の保液率に
余り差異が認められないのに対して、比較例の（Ｘ1）
電池〜（Ｘ5）電池では上部セパレータ４ａの保液率が
下部セパレータ４ｂの保液率に比べて極めて低くなって
いるという理由によるものと考えられる。 〔その他の事項〕 上記実施例ではセパレータを２分割するような構成であ
るが、このような構成に限定されるものではなく、３分
割以上となるような構成であっても良いことは勿論であ
る。This is because, as shown in FIG. 4, if the amount of the electrolytic solution is 4.0 g / Ah, the (A 1 )
(A 4 ) Not only batteries but also (X 1 ) batteries of comparative examples to (X 5 )
Even in the case of a battery, there is little difference in the electrolyte retention between the upper separator 4a and the lower separator 4b. However, when the amount of the electrolytic solution becomes 3.5 g / Ah or less, in the batteries (A 1 ) to (A 4 ) of the present invention, the lower separator 4 b and the upper separator 4 a have an excessively high electrolyte retention ratio. While no difference was observed, the comparative example (X 1 )
It is considered that the reason is that in the batteries to (X 5 ) batteries, the liquid retention of the upper separator 4a is extremely lower than the liquid retention of the lower separator 4b. [Other Matters] In the above embodiment, the configuration is such that the separator is divided into two. However, the present invention is not limited to such a configuration. is there.
【００２４】[0024]
【発明の効果】以上説明したように本発明によれば、据
置型の大型電池であってもセパレータの上部と下部との
間で電解液の保液量が異なるようなことを抑制すること
ができるので、高率放電特性やサイクル特性を飛躍的に
向上させることが可能となるといった優れた効果を奏す
る。As described above, according to the present invention, it is possible to suppress the difference in the amount of electrolyte retained between the upper part and the lower part of the separator even in a stationary large battery. As a result, it is possible to achieve an excellent effect that the high rate discharge characteristics and the cycle characteristics can be remarkably improved.
【図１】本発明の一実施例に係る据置型ニッケル−水素
アルカリ蓄電池の部分断面斜視図である。FIG. 1 is a partial sectional perspective view of a stationary nickel-hydrogen alkaline storage battery according to one embodiment of the present invention.
【図２】本発明の電池に用いるセパレータの断面図であ
る。FIG. 2 is a cross-sectional view of a separator used in the battery of the present invention.
【図３】本発明の（Ａ1 ）電池〜（Ａ4 ）電池及び比較
例の（Ｘ1 ）電池〜（Ｘ5 ）電池における電池高さと下
部セパレータ保液率、上部セパレータ保液率、高率放電
特性、及びサイクル特性との関係を示すグラフである。FIG. 3 shows the battery height, the lower separator liquid retention rate, the upper separator liquid retention rate, and the high (A 1 ) to (A 4 ) batteries of the present invention and (X 1 ) to (X 5 ) batteries of Comparative Examples. 5 is a graph showing a relationship between the rate discharge characteristics and the cycle characteristics.
【図４】本発明の（Ａ1 ）電池〜（Ａ4 ）電池及び比較
例の（Ｘ1 ）電池〜（Ｘ5 ）電池における電解液の液量
と下部セパレータ保液率、上部セパレータ保液率、高率
放電特性、及びサイクル特性との関係を示すグラフであ
る。FIG. 4 shows the amount of electrolyte solution, the lower separator retention rate, and the upper separator retention in the (A 1 ) battery to (A 4 ) battery of the present invention and the (X 1 ) battery to (X 5 ) battery of the comparative example. 5 is a graph showing a relationship among a rate, a high rate discharge characteristic, and a cycle characteristic.
２ 正極 ３ 負極 ４ セパレータ ４ａ 上部セパレータ ４ｂ 下部セパレータ 2 Positive electrode 3 Negative electrode 4 Separator 4a Upper separator 4b Lower separator
───────────────────────────────────────────────────── フロントページの続き (72)発明者 近野 義人 守口市京阪本通２丁目18番地 三洋電機 株式会社内 (72)発明者 松浦 義典 守口市京阪本通２丁目18番地 三洋電機 株式会社内 (72)発明者 西尾 晃治 守口市京阪本通２丁目18番地 三洋電機 株式会社内 (72)発明者 古川 修弘 守口市京阪本通２丁目18番地 三洋電機 株式会社内 (56)参考文献 特開 昭60−100363（ＪＰ，Ａ) 特開 昭63−248053（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 10/00 - 10/30 H01M 2/14 - 2/18 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshito Chino 2-18-18 Keihanhondori, Moriguchi City Sanyo Electric Co., Ltd. (72) Inventor Yoshinori Matsuura 2-18-18 Keihanhondori Moriguchi City Sanyo Electric Co., Ltd. ( 72) Inventor Koji Nishio 2--18 Keihanhondori, Moriguchi City, Sanyo Electric Co., Ltd. (72) Inventor Furukawa 2-18-18 Keihanhondori, Moriguchi City, Sanyo Electric Co., Ltd. (56) References JP 60 -100363 (JP, A) JP-A-63-248053 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 10/00-10/30 H01M 2/14-2/18
Claims (1)
し、且つこのセパレータに含浸されたＫＯＨを含む電解
液の液量が制限されると共に、上記セパレータの高さが
電解液の表面張力が十分に及ばない高さとなるよう構成
されたアルカリ蓄電池において、電池高さが１０ｃｍ以
上であり、前記アルカリ電解液の液量が３．５ｇ／Ａｈ
以下であって、前記セパレータは２以上に分割され、且
つ下部に位置するセパレータから上部に位置するセパレ
ータにいくにつれて前記電解液の保液性が優れるように
構成されていることを特徴とするアルカリ蓄電池。1. A battery having a separator extending in the height direction of a battery, wherein the amount of an electrolyte containing KOH impregnated in the separator is limited, and the height of the separator is reduced by the surface tension of the electrolyte. In an alkaline storage battery that is configured to have a height that is not sufficient, the height of the battery is 10 cm or less.
And the amount of the alkaline electrolyte is 3.5 g / Ah.
The alkali is characterized in that the separator is divided into two or more, and is configured so that the liquid retaining property of the electrolytic solution is excellent from the separator located at the bottom to the separator located at the top. Storage battery .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30869291A JP3157226B2 (en) | 1991-11-25 | 1991-11-25 | Alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30869291A JP3157226B2 (en) | 1991-11-25 | 1991-11-25 | Alkaline storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05144466A JPH05144466A (en) | 1993-06-11 |
| JP3157226B2 true JP3157226B2 (en) | 2001-04-16 |
Family
ID=17984139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30869291A Expired - Fee Related JP3157226B2 (en) | 1991-11-25 | 1991-11-25 | Alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3157226B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019151118A1 (en) * | 2018-01-31 | 2019-08-08 | 日本ゼオン株式会社 | Composition for lithium ion secondary cell separator, two-part composition for lithium ion secondary cell separator, method for manufacturing lithium ion secondary cell separator, and method for manufacturing lithium ion secondary cell |
| US20220126666A1 (en) * | 2019-01-09 | 2022-04-28 | Byd Company Limited | Power battery pack and electric vehicle |
-
1991
- 1991-11-25 JP JP30869291A patent/JP3157226B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05144466A (en) | 1993-06-11 |
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