JPH05217579A - Hydride secondary battery - Google Patents
Hydride secondary batteryInfo
- Publication number
- JPH05217579A JPH05217579A JP4046088A JP4608892A JPH05217579A JP H05217579 A JPH05217579 A JP H05217579A JP 4046088 A JP4046088 A JP 4046088A JP 4608892 A JP4608892 A JP 4608892A JP H05217579 A JPH05217579 A JP H05217579A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- electrode
- current collector
- battery case
- hydrogen storage
- 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.)
- Withdrawn
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
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水素化物二次電池に係
わり、さらに詳しくはその負極の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydride secondary battery, and more particularly to improvement of its negative electrode.
【０００２】[0002]
【従来の技術】一般に水素化物二次電池では、反応面積
を広げて体積当りの電気容量を高めるため、正極および
負極をシート状に成形し、それらをセパレータを介して
渦巻状に巻回して渦巻状電極体とし、その渦巻状電極体
を電池ケース内に収容する構成を採っている。2. Description of the Related Art Generally, in a hydride secondary battery, in order to expand the reaction area and increase the electric capacity per volume, the positive electrode and the negative electrode are formed into a sheet shape, which is spirally wound through a separator. The electrode body has a spiral shape, and the spiral electrode body is housed in a battery case.
【０００３】そして、この水素化物二次電池における負
極は、ペースト式、圧着式などで作製されるが、いずれ
の方法を採る場合においても、集電体に水素吸蔵合金を
圧縮した状態で保持させており、通常、その集電体は負
極の厚み方向の中央部に配置している（たとえば、特開
平２−２１６７６６号公報）。The negative electrode in this hydride secondary battery is manufactured by a paste method, a pressure bonding method or the like. In either method, the current collector holds the hydrogen storage alloy in a compressed state. In general, the current collector is arranged at the center of the negative electrode in the thickness direction (for example, Japanese Patent Laid-Open No. 2-216766).
【０００４】[0004]
【発明が解決しようとする課題】しかし、水素吸蔵合金
は非常に硬く、そのような硬い材料を圧縮して集電体に
保持させた負極では、渦巻状に巻回する際に、その内周
側となる部分と外周側となる部分とでは、応力が異な
り、巻回がしにくいという問題がある。すなわち、巻回
により、内周側となる部分には圧縮応力が生じ、外周側
となる部分には引張応力が生じ、この応力差が大きいほ
ど巻回がしにくくなる。However, the hydrogen storage alloy is very hard, and in a negative electrode in which such a hard material is compressed and held by the current collector, when it is spirally wound, its inner circumference is reduced. There is a problem that the stress is different between the side portion and the outer peripheral portion, and winding is difficult. That is, due to the winding, a compressive stress is generated in the portion on the inner peripheral side, and a tensile stress is generated in the portion on the outer peripheral side.
【０００５】特に最近では、高容量化をはかるため、集
電体に水素吸蔵合金を高圧力で圧着して作製した圧着式
の負極が好まれており、そのような圧着式の負極では、
前記のような巻回しにくいという問題がより顕著に現
れ、そのため巻き径が大きくなり、渦巻状電極体を電池
ケースに挿入する際に渦巻状電極体の外周部が電池ケー
スの開口端に引っかかって損傷を受けるという問題が生
じやすい。Particularly in recent years, in order to increase the capacity, a pressure-bonding type negative electrode produced by pressure-bonding a hydrogen storage alloy to a current collector at a high pressure is preferred. In such a pressure-bonding type negative electrode,
The problem of difficulty in winding as described above becomes more prominent, and therefore the winding diameter becomes larger, and when the spirally wound electrode body is inserted into the battery case, the outer periphery of the spirally wound electrode body is caught by the open end of the battery case. The problem of being damaged easily occurs.
【０００６】したがって、本発明は、上記のような従来
技術における問題点を解決し、負極を巻回しやすくし、
渦巻状電極体を電池ケースに挿入する際の不良発生が少
ない水素化物二次電池を提供することを目的とする。Therefore, the present invention solves the above-mentioned problems in the prior art and makes it easier to wind the negative electrode,
It is an object of the present invention to provide a hydride secondary battery that is less likely to cause defects when the spiral electrode body is inserted into a battery case.
【０００７】[0007]
【課題を解決するための手段】本発明は、負極中におけ
る集電体の位置を負極の厚み方向の中央部からいずれか
一方の表面側にずらし、負極をその集電体が配置する側
を内周側にして渦巻状に巻回することにより、上記目的
を達成したものである。According to the present invention, the position of the current collector in the negative electrode is shifted from the central portion in the thickness direction of the negative electrode to one surface side, and the negative electrode is placed on the side where the current collector is arranged. The above object is achieved by spirally winding the wire on the inner peripheral side.
【０００８】すなわち、集電体は水素吸蔵合金の圧縮層
よりやわらかく巻回しやすいので、この集電体が内周側
に配置することによって、巻回したときに内周側部分と
外周側部分との応力差が少なくなり、巻き戻りが少なく
なる。That is, since the current collector is easier to wind than the compressed layer of the hydrogen storage alloy, the current collector is arranged on the inner peripheral side, so that when the current collector is wound, the inner peripheral portion and the outer peripheral portion are separated. The stress difference between the two becomes smaller and the rewinding becomes smaller.
【０００９】したがって、負極が巻回しやすくなり、ま
た、巻き始めの径を小さくすることができるので、渦巻
状電極体全体も小径にすることができる。その結果、渦
巻状電極体の電池ケースへの挿入が容易になり、不良発
生が少なくなる。Therefore, the negative electrode can be easily wound, and the diameter at the beginning of winding can be reduced, so that the entire spiral electrode body can be reduced in diameter. As a result, the spiral electrode body can be easily inserted into the battery case, and the occurrence of defects is reduced.
【００１０】また、負極の巻回体の外周側表面の水素吸
蔵合金層にクラックが発生し、そのクラックによって電
解液の吸収速度が速くなり、かつ電解液の保持量が多く
なるので、放電容量が向上する。Further, a crack is generated in the hydrogen storage alloy layer on the outer peripheral surface of the wound body of the negative electrode, and the crack speeds up the absorption rate of the electrolytic solution and increases the retained amount of the electrolytic solution. Is improved.
【００１１】[0011]
【実施例】つぎに、本発明の実施例を図面を参照しつつ
説明する。Embodiments of the present invention will now be described with reference to the drawings.
【００１２】図１は本発明に係る水素化物二次電池の一
例を拡大して示す縦断面図である。図２および図３は本
発明において使用する負極の一例を示すもので、図２は
その正面図、図３はその横断面を模式的に示す横断面図
である。FIG. 1 is an enlarged vertical sectional view showing an example of a hydride secondary battery according to the present invention. 2 and 3 show an example of the negative electrode used in the present invention. FIG. 2 is a front view thereof, and FIG. 3 is a transverse cross-sectional view schematically showing the cross-section thereof.
【００１３】まず、図１に示す電池について説明する
と、１は正極、２は負極、３はセパレータ、４は渦巻状
電極体、５は電池ケース、６は環状ガスケット、７は封
口蓋、８は端子板、９は封口板、１０は金属バネ、１１
は弁体、１２は正極リード体、１３は負極絶縁体、１４
は正極絶縁体である。First, the battery shown in FIG. 1 will be described. 1 is a positive electrode, 2 is a negative electrode, 3 is a separator, 4 is a spiral electrode body, 5 is a battery case, 6 is an annular gasket, 7 is a sealing lid, and 8 is Terminal plate, 9 sealing plate, 10 metal spring, 11
Is a valve body, 12 is a positive electrode lead body, 13 is a negative electrode insulator, 14
Is a positive electrode insulator.
【００１４】正極１は焼結式ニッケル電極が用いられて
いて、オキシ水酸化ニッケルを活物質として含むシート
状の成形体からなり、負極２は水素を可逆的に吸蔵・放
出できる水素吸蔵合金を活物質として含むシート状の成
形体からなるものである。The positive electrode 1 uses a sintered nickel electrode and is made of a sheet-shaped compact containing nickel oxyhydroxide as an active material, and the negative electrode 2 is a hydrogen storage alloy capable of reversibly storing and releasing hydrogen. It is composed of a sheet-shaped molded body containing an active material.
【００１５】上記負極２は、図２〜３に示すように、集
電体２ａと水素吸蔵合金２ｂとで構成され、図３に明示
されるように、集電体２ａは負極２の厚み方向の中央部
から一方の表面側にずれて配置している。そして、この
負極２は、たとえばニッケル製のエキスパンドメタルを
集電体２ａとし、その集電体２ａに水素吸蔵合金２ｂを
一方の面から高圧力で圧着することによって作製され
る。As shown in FIGS. 2 to 3, the negative electrode 2 is composed of a current collector 2a and a hydrogen storage alloy 2b. As shown in FIG. 3, the current collector 2a is formed in the thickness direction of the negative electrode 2. It is arranged so as to be displaced from the central portion to the one surface side. The negative electrode 2 is manufactured by using, for example, an expanded metal made of nickel as the current collector 2a, and pressing the hydrogen storage alloy 2b onto the current collector 2a from one surface with high pressure.
【００１６】セパレータ３はナイロン不織布からなるも
ので、上記正極１と負極２はこのセパレータ３を介して
重ね合わせられ渦巻状に巻回されて渦巻状電極体４にさ
れている。The separator 3 is made of nylon non-woven fabric, and the positive electrode 1 and the negative electrode 2 are superposed on each other via the separator 3 and spirally wound to form a spiral electrode body 4.
【００１７】ただし、上記渦巻状電極体４において、負
極２はその集電体２ａが内周側に配置するようにして渦
巻状に巻回されている。なお、負極２には上記のように
集電体２ａが用いられ、また正極１にもニッケル焼結体
が基板として用いられているが、図１では繁雑化を避け
るため、それらを図示していない。However, in the spirally wound electrode body 4, the negative electrode 2 is spirally wound so that the current collector 2a is arranged on the inner peripheral side. Although the current collector 2a is used for the negative electrode 2 and the nickel sintered body is also used for the positive electrode 1 as a substrate as described above, these are shown in FIG. 1 to avoid complication. Absent.
【００１８】上記渦巻状電極体４は電池ケース５内に収
容され、正極１は正極リード体１２によって封口板９の
下側部分に接続され、図１には図示されていないが、負
極２は渦巻状電極体４の最外周部において集電体２ａが
電池ケース５の内周面に接触し、それによって負極２と
電池ケース５との電気的接続が得られるようになってい
る。The spiral electrode body 4 is housed in the battery case 5, the positive electrode 1 is connected to the lower portion of the sealing plate 9 by the positive electrode lead body 12, and the negative electrode 2 is not shown in FIG. The current collector 2a contacts the inner peripheral surface of the battery case 5 at the outermost peripheral portion of the spiral electrode body 4, whereby electrical connection between the negative electrode 2 and the battery case 5 is obtained.
【００１９】上記渦巻状電極体４の電池ケース５への挿
入に先立って、電池ケース５の底部に負極絶縁体１３が
配置され、渦巻状電極体４の上部には正極絶縁体１４が
配置されている。Prior to inserting the spiral electrode body 4 into the battery case 5, a negative electrode insulator 13 is arranged at the bottom of the battery case 5, and a positive electrode insulator 14 is arranged at the upper part of the spiral electrode body 4. ing.
【００２０】封口蓋７は端子板８と封口板９とで構成さ
れ、電池ケース５の開口部はこの封口蓋７と前記環状ガ
スケット６とで封口されている。The sealing lid 7 is composed of a terminal plate 8 and a sealing plate 9, and the opening of the battery case 5 is sealed by the sealing lid 7 and the annular gasket 6.
【００２１】端子板８にはガス排出孔８ａが設けられ、
封口板９にガス検知孔９ａが設けられ、端子板８と封口
板９の間には金属バネ１０と弁体１１とが配置されてい
る。そして、封口板９の外周部を折り曲げて端子板８の
外周部を挟み込んで端子板８と封口板９とを固定してい
る。The terminal plate 8 is provided with a gas discharge hole 8a,
A gas detection hole 9a is provided in the sealing plate 9, and a metal spring 10 and a valve body 11 are arranged between the terminal plate 8 and the sealing plate 9. Then, the outer peripheral portion of the sealing plate 9 is bent to sandwich the outer peripheral portion of the terminal plate 8 to fix the terminal plate 8 and the sealing plate 9.
【００２２】この電池には３０重量％水酸化カリウム水
溶液が電解液として注入されており、電池サイズは単３
形である。A 30% by weight potassium hydroxide aqueous solution was injected as an electrolytic solution into this battery, and the battery size was AA.
It is a shape.
【００２３】また、この電池は、通常の状況下では金属
バネ１０の押圧力により弁体１１がガス検知孔９ａを閉
塞しているので、電池内部は密閉状態に保たれている
が、電池内部にガスが発生して電池内圧が異常に上昇し
た場合には、金属バネ１０が収縮して弁体１１とガス検
知孔９ａとの間に隙間が生じ、電池内部のガスはガス検
知孔９ａおよびガス排出孔８ａを通過して電池外部に放
出され、電池破裂が防止されるように構成されている。Further, in this battery, under normal circumstances, the valve body 11 closes the gas detection hole 9a by the pressing force of the metal spring 10, so that the inside of the battery is kept in a sealed state. When gas is generated in the battery and the internal pressure of the battery rises abnormally, the metal spring 10 contracts to form a gap between the valve body 11 and the gas detection hole 9a, and the gas inside the battery is detected by the gas detection hole 9a and the gas detection hole 9a. The gas is discharged through the gas discharge hole 8a to the outside of the battery, and the battery is prevented from bursting.
【００２４】上記負極２の集電体２ａとしては、前記し
たエキスパンドメタル以外にも、金網、金属繊維、パン
チングメタルなどが使用可能であり、材質的にはニッケ
ルや、ステンレス鋼製で表面にニッケルメッキを施した
ものなどが適している。As the current collector 2a of the negative electrode 2, wire mesh, metal fiber, punching metal or the like can be used in addition to the expanded metal described above. The material is nickel, or stainless steel made of nickel on the surface. A plated product is suitable.
【００２５】つぎに、本発明と従来例との特性比較を行
った結果について示す。Next, the results of characteristics comparison between the present invention and the conventional example will be shown.
【００２６】本発明の負極２は、厚さ０．４ｍｍ、ＳＷ
＝１ｍｍ、ＬＷ＝２ｍｍで、幅４０ｍｍ、長さ１３０ｍ
ｍのニッケル製のエキスパンドメタルを集電体２ａとし
て用い、この集電体２ａに組成Ｖ22Ｔｉ16Ｚｒ16Ｎｉ39
Ｃｒ7 の水素吸蔵合金２ｂを一方の面から高圧力で圧着
することによって作製されたものであり、厚み０．３ｍ
ｍ（圧縮されるため、厚みが薄くなる）、幅４０ｍｍ、
長さ１３０ｍｍで、水素吸蔵合金２ｂの圧着された部分
の長さは１００ｍｍであり、この負極２では、図３に示
すように、集電体２ａが一方の表面側に配置している。The negative electrode 2 of the present invention has a thickness of 0.4 mm and a SW
= 1 mm, LW = 2 mm, width 40 mm, length 130 m
using a nickel expanded metal of m as a current collector 2a, V 22 composition to the current collector 2a Ti 16 Zr 16 Ni 39
It was produced by press-bonding the hydrogen storage alloy 2b of Cr 7 from one surface with high pressure and has a thickness of 0.3 m.
m (compressed, the thickness becomes thin), width 40 mm,
The length of the hydrogen storage alloy 2b is 130 mm, and the length of the pressure-bonded portion of the hydrogen storage alloy 2b is 100 mm. In the negative electrode 2, the current collector 2a is arranged on one surface side as shown in FIG.
【００２７】これに対して、従来例の負極は、前記同様
のニッケル製のエキスパンドメタルと水素吸蔵合金を用
い、該エキスパンドメタルからなる集電体にその両面か
ら水素吸蔵合金を高圧力で圧着して作製されたものであ
り、集電体が負極の厚み方向の中央部に配置している
が、それ以外は前記本発明の負極と同様の構成からなる
ものである。On the other hand, the negative electrode of the conventional example uses the same nickel expanded metal and hydrogen storage alloy as described above, and the hydrogen storage alloy is pressure-bonded to both sides of the collector made of the expanded metal at high pressure. The negative electrode of the present invention has the same structure as that of the negative electrode of the present invention except that the current collector is arranged at the center of the negative electrode in the thickness direction.
【００２８】正極１には厚み０．７ｍｍ、幅４０ｍｍ、
長さ９０ｍｍの焼結式ニッケル電極を用い、セパレータ
３にはナイロン不織布を用い、これらの正極１とセパレ
ータ３は本発明、従来例のいずれにも共通して使用さ
れ、前記の負極２と重ね合わせて渦巻状に巻回して渦巻
状電極体４を作製した。The positive electrode 1 has a thickness of 0.7 mm and a width of 40 mm,
A sintered nickel electrode having a length of 90 mm is used, a nylon nonwoven fabric is used for the separator 3, and the positive electrode 1 and the separator 3 are commonly used in both the present invention and the conventional example, and are stacked on the negative electrode 2. The spirally wound electrode body 4 was manufactured by spirally winding them together.
【００２９】上記渦巻状電極体４の作製にあたっては、
セパレータ３を正極１と負極２との間に介在させ、本発
明の渦巻状電極体４においては、負極２はその集電体２
ａが配置する側を内周側にして渦巻状に巻回されてい
る。そして、作製された渦巻状電極体４は本発明、従来
例とも１０００個ずつである。In manufacturing the spiral electrode body 4,
The separator 3 is interposed between the positive electrode 1 and the negative electrode 2, and in the spiral electrode body 4 of the present invention, the negative electrode 2 is the current collector 2 thereof.
It is spirally wound with the side on which a is arranged being the inner peripheral side. The number of manufactured spiral electrode bodies 4 is 1000 in each of the present invention and the conventional example.
【００３０】そして、得られた渦巻状電極体４を電池ケ
ース５に挿入し、その際の不良発生率（つまり、渦巻状
電極体４の外周部が電池ケース５の開口端に引っかかっ
て、渦巻状電極体４が損傷を受ける率）を調べた。その
結果を表１に示す。Then, the obtained spiral electrode body 4 is inserted into the battery case 5, and the defect occurrence rate at that time (that is, the outer peripheral portion of the spiral electrode body 4 is caught on the open end of the battery case 5 and is swirled). The rate at which the strip electrode body 4 is damaged) was investigated. The results are shown in Table 1.
【００３１】また、それらの渦巻状電極体４に濃度３０
重量％の水酸化カリウム水溶液からなる電解液２ｃｃを
吸収させ、その吸収時間を測定した。その結果を表１に
示す。ただし、表１に示す電解液吸収時間は、本発明、
従来例とも、１０００個ずつの渦巻状電極体４について
調べた電解液の吸収時間の平均値である。Further, the spiral electrode body 4 has a concentration of 30
The electrolyte solution 2 cc consisting of a wt% potassium hydroxide aqueous solution was absorbed, and the absorption time was measured. The results are shown in Table 1. However, the electrolytic solution absorption time shown in Table 1 is
In each of the conventional examples, it is the average value of the absorption time of the electrolytic solution examined for each of the spirally wound electrode bodies 4.
【００３２】さらに、本発明および従来例の渦巻状電極
体４をそれぞれ１０個ずつ用い、開放系のモデルセルを
組み立て、２５℃、２００ｍＡで連続放電して、放電容
量を調べた。その結果を表１に１０個の平均値で示す。Further, an open type model cell was assembled using 10 spiral electrode bodies 4 of the present invention and 10 spiral electrode bodies of each of the conventional examples, and the discharge capacity was examined by continuous discharge at 25 ° C. and 200 mA. The results are shown in Table 1 as an average value of 10 pieces.
【００３３】[0033]
【表１】 [Table 1]
【００３４】表１に示すように、本発明による場合は、
従来例に比べて、渦巻状電極体４の電池ケース５への挿
入時の不良発生率が少なく、電解液吸収時間が短かく、
放電容量が大きかった。As shown in Table 1, according to the present invention,
Compared with the conventional example, the occurrence rate of defects when inserting the spirally wound electrode body 4 into the battery case 5 is low, and the electrolyte solution absorption time is short,
The discharge capacity was large.
【００３５】本発明による場合、渦巻状電極体４の電池
ケース５への挿入時の不良発生が少なかったのは、巻回
時の巻き始めの径が小さく、渦巻状電極体４の径が小さ
くなったためであり、また、電解液の吸収時間が短く、
放電容量が大きかったのは、巻回により外周側の水素吸
蔵合金層にクラックが発生して電解液の保持量が増した
ためである。According to the present invention, the occurrence of defects when inserting the spiral electrode body 4 into the battery case 5 was small because the diameter of the winding start at the time of winding was small and the diameter of the spiral electrode body 4 was small. Because the electrolyte absorption time is short,
The reason why the discharge capacity was large was that the winding caused a crack in the hydrogen storage alloy layer on the outer peripheral side to increase the retained amount of the electrolytic solution.
【００３６】[0036]
【発明の効果】以上説明したように、本発明では、負極
２中における集電体２ａの位置を負極２の厚み方向の中
央部からいずれか一方の表面側にずらし、その集電体２
ａが配置する側を内周側にして渦巻状に巻回することに
より、巻回をしやすくし、渦巻状電極体４を電池ケース
５に挿入する際の不良発生を少なくさせ、また、電解液
の吸収速度を速くさせ、かつ電解液の保持量を多くさせ
て、放電容量の向上を達成することができた。As described above, according to the present invention, the position of the current collector 2a in the negative electrode 2 is shifted from the central portion in the thickness direction of the negative electrode 2 to either surface side, and the current collector 2 is moved.
By winding in a spiral shape with the side on which a is disposed as the inner peripheral side, the winding is facilitated, and the occurrence of defects when inserting the spirally wound electrode body 4 into the battery case 5 is reduced. It was possible to improve the discharge capacity by increasing the absorption rate of the liquid and increasing the amount of the electrolytic liquid retained.
【図１】本発明に係る水素化物二次電池の一例を拡大し
て示す縦断面図である。FIG. 1 is a longitudinal sectional view showing an enlarged example of a hydride secondary battery according to the present invention.
【図２】本発明において使用する負極の一例を示す正面
図である。FIG. 2 is a front view showing an example of a negative electrode used in the present invention.
【図３】図２に示す負極の横断面図である。3 is a cross-sectional view of the negative electrode shown in FIG.
１ 正極 ２ 負極 ２ａ 集電体 ２ｂ 水素吸蔵合金 ３ セパレータ ４ 渦巻状電極体 ５ 電池ケース 1 Positive electrode 2 Negative electrode 2a Current collector 2b Hydrogen storage alloy 3 Separator 4 Spiral electrode body 5 Battery case
Claims (1)
として含むシート状の成形体からなる正極１と、水素吸
蔵合金を活物質として含むシート状の成形体からなる負
極２と、セパレータ３と、アルカリ水溶液からなる電解
液を有し、上記正極１と負極２はセパレータ３を介して
渦巻状に巻回した渦巻状電極体４として電池ケース５内
に収容されている水素化物二次電池において、上記負極
２は集電体２ａに水素吸蔵合金２ｂを圧縮状態で保持さ
せてなり、該集電体２ａが負極２の厚み方向の中央部か
らいずれか一方の表面側にずれて配置していて、上記渦
巻状電極体４中の負極２はその集電体２ａが配置する側
を内周側にして渦巻状に巻回されていることを特徴とす
る水素化物二次電池。1. A positive electrode 1 made of a sheet-shaped molded body containing a metal oxide or a metal hydroxide as an active material, a negative electrode 2 made of a sheet-shaped molded body containing a hydrogen storage alloy as an active material, and a separator 3. And a positive electrode 1 and a negative electrode 2 are spirally wound via a separator 3 as a spirally wound electrode body 4 housed in a battery case 5 in a battery case 5. In the above-mentioned negative electrode 2, the current collector 2a is made to hold the hydrogen storage alloy 2b in a compressed state, and the current collector 2a is arranged so as to deviate from the center portion in the thickness direction of the negative electrode 2 to either surface side. The hydride secondary battery is characterized in that the negative electrode 2 in the spiral electrode body 4 is spirally wound with the side on which the current collector 2a is arranged being the inner peripheral side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4046088A JPH05217579A (en) | 1992-01-31 | 1992-01-31 | Hydride secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4046088A JPH05217579A (en) | 1992-01-31 | 1992-01-31 | Hydride secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05217579A true JPH05217579A (en) | 1993-08-27 |
Family
ID=12737235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4046088A Withdrawn JPH05217579A (en) | 1992-01-31 | 1992-01-31 | Hydride secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05217579A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150015337A1 (en) * | 2013-07-15 | 2015-01-15 | Analog Devices, Inc. | Modular approach for reducing flicker noise of mosfets |
-
1992
- 1992-01-31 JP JP4046088A patent/JPH05217579A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150015337A1 (en) * | 2013-07-15 | 2015-01-15 | Analog Devices, Inc. | Modular approach for reducing flicker noise of mosfets |
| US9559203B2 (en) * | 2013-07-15 | 2017-01-31 | Analog Devices, Inc. | Modular approach for reducing flicker noise of MOSFETs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990408 |