JP2003303578A - Lead accumulator - Google Patents
Lead accumulatorInfo
- Publication number
- JP2003303578A JP2003303578A JP2002105995A JP2002105995A JP2003303578A JP 2003303578 A JP2003303578 A JP 2003303578A JP 2002105995 A JP2002105995 A JP 2002105995A JP 2002105995 A JP2002105995 A JP 2002105995A JP 2003303578 A JP2003303578 A JP 2003303578A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- electrode plate
- lattice
- ribs
- plate
- 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
- 239000002253 acid Substances 0.000 claims description 8
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 description 21
- 230000007797 corrosion Effects 0.000 description 15
- 238000005260 corrosion Methods 0.000 description 15
- 230000000452 restraining effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 229910014474 Ca-Sn Inorganic materials 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005373 porous glass Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening 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
- Sealing Battery Cases Or Jackets (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉛蓄電池に関する
ものである。TECHNICAL FIELD The present invention relates to a lead storage battery.
【０００２】[0002]
【従来の技術】鉛蓄電池、特にフロート・トリクル充電
等の自己放電を補う程度の微小電流で絶えず充電され、
非常時に負荷をバックアップする非常用電源等に用いら
れる鉛蓄電池では、主に正極格子にＳｂを実質上含まな
いＰｂ−Ｃａ−Ｓｎ系合金が使用されており、劣化に伴
って正極板が伸び、縦方向に伸びた場合には、負極スト
ラップと接触して短絡する、横方向の伸びでは電槽を破
壊するといった問題を抱えている。2. Description of the Related Art Lead-acid batteries, in particular, are constantly charged with a minute current to compensate for self-discharge such as float / trickle charging,
In a lead storage battery used as an emergency power source for backing up a load in an emergency, a Pb-Ca-Sn alloy that does not substantially contain Sb is mainly used in a positive electrode grid, and the positive electrode plate expands with deterioration, When it extends in the vertical direction, it has a problem that it contacts the negative electrode strap to cause a short circuit, and when it extends in the horizontal direction, it destroys the battery case.
【０００３】この問題の解決策の一つとして、例えば電
解液保持材が多孔性ガラス繊維セパレータ（以下：セパ
レータと記す）である制御弁式鉛蓄電池では、負極スト
ラップ底面と正極板との間に正極板が伸びてもお互いが
接触しないよう絶縁材料の櫛形の短絡防止板を挿入する
方法がある。図１は短絡防止板の一例を示す上視図であ
り、１１はその短絡防止板である。短絡防止板１１は通
常、厚さ１ｍｍ程度の樹脂板を打ち抜いて作られてい
る。As one of the solutions to this problem, for example, in a control valve type lead-acid battery in which an electrolytic solution holding material is a porous glass fiber separator (hereinafter referred to as a separator), a negative electrode strap bottom surface and a positive electrode plate are provided. There is a method of inserting a comb-shaped short-circuit prevention plate made of an insulating material so that the positive electrode plates do not come into contact with each other even if they extend. FIG. 1 is a top view showing an example of the short-circuit prevention plate, and 11 is the short-circuit prevention plate. The short-circuit prevention plate 11 is usually made by punching out a resin plate having a thickness of about 1 mm.
【０００４】図２は該短絡防止板を極板群からなるエレ
メントに挿入した一例を示す断面図であり、２１は正極
板、３１は負極板、４１はセパレータ、５１は正極板２
１を電気的に並列に接続した正極ストラップ、５２は負
極板３１を電気的に並列に接続した負極ストラップをそ
れぞれ示す。短絡防止板１１は図２に示されるように負
極ストラップ５２と正極板２１との上端の間に挿入され
ている。FIG. 2 is a cross-sectional view showing an example in which the short-circuit prevention plate is inserted into an element composed of an electrode plate group, 21 is a positive electrode plate, 31 is a negative electrode plate, 41 is a separator, and 51 is a positive electrode plate 2.
Reference numeral 1 denotes a positive electrode strap in which 1 is electrically connected in parallel, and 52 denotes a negative electrode strap in which the negative electrode plate 31 is electrically connected in parallel. The short circuit prevention plate 11 is inserted between the upper ends of the negative electrode strap 52 and the positive electrode plate 21 as shown in FIG.
【０００５】図３（ａ）および（ｂ）は短絡防止板１１
を装着する前の蓄電池エレメントの上視図ならびに短絡
防止板１１を装着したエレメントのストラップ部分を省
略した上視図をそれぞれ示す。２１ａ，２１ｂ，２１ｃ
は正極ストラップ５１に電気的に並列に接続された正極
板、３１ａ，３１ｂ，３１ｃ，３１ｄは負極ストラップ
５２に電気的に並列に接続された負極板、４１はセパレ
ータをそれぞれ示す。3A and 3B show a short-circuit prevention plate 11
2 shows a top view of the storage battery element before mounting and a top view in which the strap portion of the element on which the short circuit prevention plate 11 is mounted is omitted. 21a, 21b, 21c
Is a positive electrode plate electrically connected in parallel to the positive electrode strap 51, 31a, 31b, 31c and 31d are negative electrode plates electrically connected in parallel to the negative electrode strap 52, and 41 is a separator.
【０００６】図３に示すように、正極板２１ａ，２１
ｂ，２１ｃと負極ストラップ５２との短絡を防ぐには、
短絡防止板１１を該ストラップ５２と負極板３１ａ，３
１ｂ，３１ｃ，３１ｄの間に差し込まれなければならな
い。負極ストラップと正極板の狭い隙間に、薄い短絡防
止板を負極板同士の間に、外れないよう奥まで差し込む
のは、機械で自動的に行うのは困難であり、従来、この
作業はすべて人手に頼っていた。As shown in FIG. 3, positive electrode plates 21a, 21
To prevent a short circuit between b and 21c and the negative electrode strap 52,
The short circuit prevention plate 11 is attached to the strap 52 and the negative electrode plates 31a, 3
It must be inserted between 1b, 31c and 31d. It is difficult for a machine to automatically insert a thin short circuit prevention plate between the negative electrode plates into the narrow gap between the negative electrode strap and the positive electrode plate so that it will not come off. I was relying on.
【０００７】図４は短絡防止板１１の機能を説明する断
面図であり、２２は腐食劣化により格子が伸びた正極板
を示す。他の構成部材は図２と同じ番号を付記する。FIG. 4 is a cross-sectional view for explaining the function of the short-circuit prevention plate 11, and reference numeral 22 denotes a positive electrode plate whose lattice extends due to corrosion deterioration. The other components have the same numbers as in FIG.
【０００８】図４に示すように短絡防止板１１が正極板
２２と負極ストラップ５２の間で、両者が電気的な導通
を持たないよう絶縁しているので、蓄電池が劣化してき
ても短絡を防止できる。しかし、短絡防止板は、正極板
の格子の伸びを押える機能がないので蓄電池の大幅な寿
命改善効果は期待できない。As shown in FIG. 4, the short-circuit prevention plate 11 insulates the positive electrode plate 22 and the negative electrode strap 52 from each other so that they do not have electrical continuity, so that a short circuit is prevented even if the storage battery deteriorates. it can. However, since the short-circuit prevention plate does not have the function of suppressing the expansion of the grid of the positive electrode plate, it is not possible to expect a significant improvement in the life of the storage battery.
【０００９】その対策として、電槽蓋の裏に正極の伸び
を押え、寿命延長を図るためのリブを配した方法が公開
実用新案 昭５９−１３４２６６や公開実用新案 昭５
９−３６５７０で提案されている。As a countermeasure against this, a method of arranging a rib for suppressing the extension of the positive electrode on the back of the battery case lid to extend the life is disclosed in Published Utility Model Sho 59-134266 and Published Utility Model Sho 5
9-36570.
【００１０】上記実用新案の特徴は、電槽内の正極板の
両肩部の上方に電槽蓋の内側に成型された押え板を位置
させたもので、自動車用蓄電池によく採用されている縦
方向の額縁がないエキスパンド格子を使用したものであ
れば両端の部分がよくのびるので効果があるが、フロー
ト・トリクル充電等の自己放電を補う程度の微小電流で
絶えず充電され、非常時に負荷をバックアップする非常
用電源等に用いられる鉛蓄電池では腐食による正極板格
子の縦方向の伸びは図４に示すように正極板の中央部か
ら正極耳側とは反対の側に集中的に起こっているので前
期実用新案の方式では格子伸びを押える効果が十分に得
られない。The feature of the above-mentioned utility model is that a holding plate molded inside the battery case lid is located above both shoulders of the positive electrode plate in the battery case, which is often adopted in automobile storage batteries. If an expanded grid without a vertical frame is used, it is effective because both ends extend well, but it is constantly charged with a small amount of current to compensate for self-discharge such as float / trickle charging, and loads in an emergency. In a lead-acid battery used as a backup emergency power source, the longitudinal expansion of the positive electrode plate grid due to corrosion occurs intensively from the center of the positive electrode plate to the side opposite to the positive electrode ear side, as shown in FIG. Therefore, the effect of suppressing the lattice expansion cannot be sufficiently obtained with the method of the utility model in the first half.
【００１１】[0011]
【発明が解決しようとする課題】本発明の課題は、正極
板格子と負極ストラップとの短絡を防止すると共に正極
板の格子の伸びを抑制し寿命性能を改善し、しかも蓄電
池の組み立て時に機械による自動化が可能でコストダウ
ンに寄与する正極板の格子伸び押さえ用リブを備えた鉛
蓄電池を提供するものである。An object of the present invention is to prevent a short circuit between the positive electrode plate grid and the negative electrode strap, suppress the elongation of the positive electrode plate grid, and improve the life performance. Provided is a lead storage battery including a rib for suppressing lattice expansion of a positive electrode plate that can be automated and contributes to cost reduction.
【００１２】[0012]
【課題を解決するための手段】課題を解決するための手
段として請求項１によれば、正極耳と負極耳とが相対す
る側に整列して設置された鉛蓄電池において、該蓄電池
の蓋裏に一体に形成されたリブであって、前記リブは正
極板幅の中心から正極耳側とは反対の側に位置し、全て
の正極板上に互いに間隔を有して２本以上配されている
ことを特徴とするものである。According to a first aspect of the present invention, there is provided a lead-acid battery in which a positive electrode ear and a negative electrode ear are aligned and arranged on opposite sides of each other. A rib integrally formed on the positive electrode plate, the rib being located on the side opposite to the positive electrode ear side from the center of the width of the positive electrode plate, and arranged on all the positive electrode plates with two or more spaced from each other. It is characterized by being present.
【００１３】正極耳側は耳により押えられているので格
子は伸びないが正極板幅の中心から正極耳側と反対の部
分は正極板を押さえるものがないので腐食による伸びが
その部分に集中する。本発明によれば、蓄電池蓋裏に一
体に形成されリブが正極板幅の中心から正極耳側と反対
の側に位置しているので、その部分の格子伸びを効果的
に押えることができる。Since the positive electrode ear side is pressed by the ear, the lattice does not extend, but since there is nothing to press the positive electrode plate from the center of the width of the positive electrode plate to the positive electrode ear side, the elongation due to corrosion concentrates on that part. . According to the present invention, since the rib integrally formed on the back of the storage battery lid is located on the side opposite to the positive electrode ear side from the center of the positive electrode plate width, it is possible to effectively suppress the lattice expansion of that portion.
【００１４】本発明のリブが連続した形状で１本だけ形
成されていると充電中に発生するガスをリブが遮蔽して
しまいガスが排出できなくなるので一定の間隔を有する
リブが２本以上が配されている。If only one rib of the present invention is formed in a continuous shape, the rib blocks the gas generated during charging and the gas cannot be discharged. Therefore, two or more ribs having a certain interval are formed. It is distributed.
【００１５】本発明ではリブが蓄電池蓋と一体に形成さ
れているので、蓄電池組み立て時に短絡防止板を挿入す
るといった作業が不要で、自動化が容易でコストダウン
に寄与する。In the present invention, since the rib is formed integrally with the storage battery lid, there is no need to insert a short-circuit prevention plate when assembling the storage battery, and automation is easy and contributes to cost reduction.
【００１６】請求項２によれば、前記リブを有する鉛蓄
電池において、正極板格子の縦桟断面積の総和と横桟断
面積の総和との比が２倍以上であることを特徴するもの
である。According to a second aspect of the present invention, in the lead-acid battery having the ribs, the ratio of the sum of the vertical cross-sectional areas of the positive electrode plate grid to the total of the horizontal cross-sectional areas is at least twice. is there.
【００１７】発明者は、正極板をリブで押えなかった場
合と押えた場合の寿命試験後の正極板格子の腐食状態を
観察した。図５および図６はその結果を示す模式図で、
２５ａ、２５ｂは正極格子、２６ａ、２６ｂは正極活物
質をそれぞれ示す。The inventor observed the corrosion state of the positive electrode grid after the life test when the positive electrode plate was not pressed by the rib and when it was pressed. 5 and 6 are schematic diagrams showing the results,
Reference numerals 25a and 25b are positive electrode grids, and 26a and 26b are positive electrode active materials.
【００１８】図５は、リブによる押えがなかった正極板
格子の腐食状態を示すもので、格子は縦方向にも横方向
にも伸び、腐食が著しく進行していて電気的導電性を失
っていた。FIG. 5 shows a corroded state of the positive electrode plate grid which was not pressed by the ribs, and the grid stretched in both the vertical and horizontal directions, and corrosion progressed remarkably and electrical conductivity was lost. It was
【００１９】図６はリブにより押えられていた正極板格
子の腐食状態を示すもので、正極板格子の縦方向の伸び
が抑えられ、導電性を保っていた。すなわち、縦方向の
粒界腐食の度合いが横方向に比べ少なかった。これは格
子表面の粒界腐食による伸びが押えられていることによ
って進行し難くなったためである。FIG. 6 shows the corroded state of the positive electrode plate grid held by the ribs, in which the vertical extension of the positive electrode plate grid was suppressed and the conductivity was maintained. That is, the degree of intergranular corrosion in the vertical direction was less than that in the horizontal direction. This is because the elongation due to intergranular corrosion on the surface of the lattice is suppressed, making it difficult to proceed.
【００２０】図７はその粒界腐食の進行状態を模式図的
に説明するもので、２５ｃは正極格子、９１は粒界腐食
した部分をそれぞれ示す。粒界腐食した部分９１はその
腐食による体積膨張によって生じる応力で、格子２５ｃ
の桟を伸ばそうとする。伸びた格子２５ｃの奥にさらに
むき出しとされた粒界があらわれ、よりいっそう粒界腐
食が進行していく。しかしながら、物理的に外部からこ
の伸びを押えることは、格子の奥への粒界腐食の進行を
緩和する働きがあることがわかってきた。FIG. 7 schematically illustrates the progress of intergranular corrosion. Reference numeral 25c indicates a positive electrode lattice, and 91 indicates an intergranular corrosion portion. The intergranularly corroded portion 91 is the stress generated by the volume expansion due to the corrosion, and the lattice 25c
Tries to extend the crosspiece. The exposed grain boundaries appear in the back of the extended lattice 25c, and the grain boundary corrosion further progresses. However, it has been found that physically suppressing this elongation from the outside has a function of alleviating the progress of intergranular corrosion to the depth of the lattice.
【００２１】発明者は、上記の知見に基づき、正極格子
の縦桟を太くし、横桟は、ペーストが充填できる範囲内
で本数を少なく、また細くして、縦桟断面積の総和と横
桟断面積の総和との比を２倍以上にした正極板を設計
し、正極板の格子の伸びを押えるリブと組み合わせるこ
とによってより一層の長寿命化が図れることを見出し
た。Based on the above findings, the inventor made the vertical bars of the positive electrode grid thicker, and made the number of the horizontal bars small and thin within the range where the paste could be filled, and the total cross-sectional area of the vertical bars and the horizontal cross-section were obtained. It has been found that a longer life can be achieved by designing a positive electrode plate in which the ratio of the cross-sectional area of the cross-section is doubled or more and combining it with a rib that suppresses the lattice expansion of the positive electrode plate.
【００２２】すなわち、正極板の格子伸び押さえ用リブ
がない場合には、正極板は縦方向にも横方向にも伸びて
いたが、上記格子を用いた場合には横桟は本数も少なく
細いので横方向の伸びが抑制され電槽を破壊するといっ
たことが回避でき、一方、縦方向の伸びは正極板の格子
伸び押さえ用リブにより抑制されるので正極板が長期に
わたって安定した形状を維持し、大幅な寿命改善が図れ
る。That is, when the ribs for restraining the lattice expansion of the positive electrode plate were not provided, the positive electrode plate extended in both the vertical and horizontal directions. However, when the above lattice was used, the number of horizontal crosspieces was small and thin. Therefore, it is possible to prevent the lateral expansion from being suppressed and destroying the battery case.On the other hand, the longitudinal expansion is suppressed by the lattice expansion suppressing ribs of the positive electrode plate, so that the positive electrode plate maintains a stable shape for a long time. , The life can be greatly improved.
【００２３】以上、説明したように、鉛蓄電池の蓋裏に
一体に形成されたリブであって、前記リブは正極板幅の
中心から正極耳側とは反対の側に位置し、全ての正極板
上に間隔を有して２本以上配され、さらに正極板格子の
縦桟断面積の総和と横桟断面積の総和との比が２倍以上
にした正極格子を用いることにより、正極板格子の横方
向および縦方向の伸びが抑制され大幅な長寿命化が実現
できる。As described above, the rib is integrally formed on the back side of the lid of the lead storage battery, and the rib is located on the side opposite to the positive electrode ear side from the center of the width of the positive electrode plate. By using a positive electrode grid in which two or more are arranged on the plate with a space and the ratio of the total of the vertical cross-sectional areas of the positive-electrode plate grid to the total of the horizontal cross-sectional areas is double or more, The expansion of the lattice in the horizontal and vertical directions is suppressed, and the life can be significantly extended.
【００２４】[0024]
【発明の実施の形態】本発明を実施例に基づき詳細に説
明する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail based on examples.
【００２５】[0025]
【実施例】図８は本発明の実施例１を示す上視図で、６
３は蓄電池蓋、１５ａ，１５ｂは蓄電池蓋裏に一体に形
成された正極板格子伸び押さえ用リブをそれぞれ示す。EXAMPLE FIG. 8 is a top view showing Example 1 of the present invention.
Reference numeral 3 denotes a storage battery lid, and reference numerals 15a and 15b denote ribs for suppressing expansion of the positive electrode plate lattice integrally formed on the back surface of the storage battery lid.
【００２６】図に示すように、本発明のリブは正極板幅
の中心から正極耳側とは反対の側に位置し、該リブの片
端が蓋側壁にしっかり固定されており必要とする強度を
得ることができ、正極板の格子の伸びに十分に耐えられ
る。また、リブ１５ａ，１５ｂは互いに約２ｍｍの間隔
を有している。As shown in the figure, the rib of the present invention is located on the side opposite to the positive electrode ear side from the center of the width of the positive electrode plate, and one end of the rib is firmly fixed to the side wall of the lid to provide the required strength. It can be obtained and can sufficiently withstand the elongation of the grid of the positive electrode plate. The ribs 15a and 15b are spaced from each other by about 2 mm.
【００２７】図９は本発明の実施例２を示す上視図で、
６４は蓄電池蓋、１５ｃ，１５ｄは正極板伸び押さえ用
リブをそれぞれ示す。FIG. 9 is a top view showing the second embodiment of the present invention.
Reference numeral 64 denotes a storage battery lid, and 15c and 15d denote ribs for suppressing the expansion of the positive electrode plate.
【００２８】図に示すように、本実施例では正極板格子
伸び押さえ用リブ１５ｃは、他方の正極格子伸び押さえ
用リブ１５ｄに直面する部分でＬ字状に曲がった形状を
している。これは、蓄電池の内部程、温度が高くなり正
極格子が伸びやすいのでその部分をリブ２本にして押え
を強化する効果がある。As shown in the figure, in this embodiment, the positive electrode plate lattice extension restraining rib 15c has an L-shaped bend at the portion facing the other positive electrode lattice stretch retaining rib 15d. This is because the temperature becomes higher in the interior of the storage battery and the positive electrode grid is likely to expand, so that there is an effect of strengthening the retainer by forming two ribs at that portion.
【００２９】図１０は本発明の実施例３を示す上視図
で、６５は蓄電池蓋、１５ｅ，１５ｆ、１５ｇ、１５ｈ
は正極板格子伸び押さえ用リブをそれぞれ示す。FIG. 10 is a top view showing a third embodiment of the present invention, in which 65 is a storage battery lid, 15e, 15f, 15g and 15h.
Shows the ribs for restraining expansion of the positive electrode plate lattice.
【００３０】図に示すような蓄電池蓋裏６５に一体に形
成された正極板格子伸び押さえ用リブが図８に示すよう
に蓄電池蓋裏の長側壁面に対して直角に形成されている
のと違い、一定の角度を有するリブが複数取り付けられ
ており、一定の幅をもって正極格子を押えることになり
より強力に押さえることができると共にリブの厚みを薄
くしても正極板の格子の伸びに耐えられる強度が得られ
る利点を有している。As shown in FIG. 8, the positive electrode plate lattice expansion restraining ribs integrally formed on the back side 65 of the storage battery lid as shown in the figure are formed at right angles to the long side wall surface of the back side of the storage battery lid. The difference is that multiple ribs with a fixed angle are attached, which holds the positive electrode grid with a constant width, which makes it possible to hold it more strongly and withstand the expansion of the positive electrode plate grid even if the rib thickness is reduced. It has the advantage that the required strength can be obtained.
【００３１】以上、説明したようにリブは蓄電池蓋と一
体に形成されており、蓄電池組み立て時に短絡防止板を
挿入するといった作業が不要でコストダウンに寄与する
ことが理解できる。As described above, the rib is formed integrally with the storage battery lid, and it can be understood that the work of inserting the short circuit prevention plate at the time of assembling the storage battery is unnecessary and contributes to cost reduction.
【００３２】図１１は請求項２の内容を具体的に示す正
極格子の上視図で、２７は縦桟、２８は横桟をそれぞれ
示す。横桟は活物質が充填保持出来る範囲内で、本数を
少なくし、細くしたもので、そのことによって縦桟断面
積の総和と横桟断面積の総和との比が３倍になってい
る。FIG. 11 is a top view of the positive electrode grid specifically showing the contents of claim 2, wherein 27 is a vertical rail and 28 is a horizontal rail. The number of horizontal rails is small and narrow within the range in which the active material can be filled and held, whereby the ratio of the total cross-sectional area of vertical rails to the total cross-sectional area of horizontal rails is tripled.
【００３３】次に、縦桟断面積の総和と横桟断面積の総
和との比を１、２、３、４倍と変えた正極格子を試作
し、それらを用いた定格容量４０Ａｈの制御弁式鉛蓄電
池を製作し、実施例１に示す構造の正極板の格子伸び押
さえ用リブを適用して、６０℃の加速トリクル（フロー
ト）寿命試験を行った。その結果を、図１２に示す。こ
の結果が示すように、縦桟断面積の総和と横桟断面積の
総和との比が２倍以上になると寿命性能の改善効果が現
れる。実用的には、３倍が最も効果的である。それ以上
にしてもさらなる改善は得られなかった。Next, a positive electrode grid was produced by changing the ratio of the total cross-sectional area of the vertical cross-section to the total cross-sectional area of the horizontal cross-section to 1, 2, 3 and 4 times, and a control valve having a rated capacity of 40 Ah was used. A type lead-acid battery was manufactured, and a rib for suppressing lattice expansion of the positive electrode plate having the structure shown in Example 1 was applied to an accelerated trickle (float) life test at 60 ° C. The result is shown in FIG. As the result shows, when the ratio of the total of the vertical cross-sectional areas and the total of the horizontal cross-sectional areas becomes more than twice, the life performance improving effect appears. Practically, 3 times is most effective. Further improvement did not result in further improvement.
【００３４】[0034]
【発明の効果】以上説明したように、正極耳と負極耳と
が相対する側に整列して設置された鉛蓄電池において、
該蓄電池の蓋裏に正極格子伸び押さえ用リブを一体に形
成すると共に該リブを正極板幅の中心から正極耳と反対
の側の位置に設け、全ての正極板上に互に間隔を有して
２本以上配されていることにより腐食による正極板格子
の縦方向の伸びを効果的押えることができ、さらに、正
極格子の設計要素を付加する、すなわち、縦桟断面積の
総和と横桟断面積の総和との比が２倍以上になる格子を
用いることにより正極板格子横方向の伸びが抑制され、
縦方向の伸びは正極板の格子伸び押さえ用リブで抑制さ
れるので、長期にわたって安定した格子形状が維持でき
大幅に寿命性能が改善され、また、前記リブは蓄電池蓋
と一体に形成されているので組み立て時に短絡防止板を
挿入するといった作業が不要でコストダウンに寄与しそ
の工業的効果が大である。As described above, in the lead storage battery in which the positive and negative electrode ears are aligned and installed on opposite sides,
Ribs for positive electrode lattice extension are integrally formed on the back of the lid of the storage battery, and the ribs are provided at a position on the side opposite to the positive electrode ear from the center of the width of the positive electrode plate and are spaced from each other on all the positive electrode plates. By arranging two or more of them, it is possible to effectively suppress the elongation of the positive electrode plate grid in the vertical direction due to corrosion, and to add a design element of the positive electrode grid, that is, the sum of the vertical cross sections and the horizontal cross bars. By using a lattice whose ratio to the total cross-sectional area is at least twice, lateral extension of the positive electrode plate lattice is suppressed,
Longitudinal elongation is suppressed by the ribs for restraining the lattice expansion of the positive electrode plate, so that a stable lattice shape can be maintained for a long period of time and the life performance is greatly improved, and the ribs are formed integrally with the storage battery lid. Therefore, the work of inserting the short-circuit prevention plate at the time of assembly is unnecessary, which contributes to cost reduction and has a great industrial effect.
【図面の簡単な説明】[Brief description of drawings]
【図１】短絡防止板の一例を示す上視図FIG. 1 is a top view showing an example of a short circuit prevention plate.
【図２】短絡防止板を蓄電池のエレメントに挿入した一
例を示す断面図FIG. 2 is a sectional view showing an example in which a short circuit prevention plate is inserted into an element of a storage battery.
【図３】（ａ）蓄電池のエレメントの上視図、（ｂ）短
絡防止板を蓄電池のエレメントに挿入した状態を示す上
視図FIG. 3A is a top view of a storage battery element, and FIG. 3B is a top view showing a state in which a short circuit prevention plate is inserted into the storage battery element.
【図４】短絡防止板の機能を説明する断面図FIG. 4 is a cross-sectional view illustrating the function of the short circuit prevention plate.
【図５】正極板の格子伸び押さえ用リブのない正極板の
腐食状態を示す模式図FIG. 5 is a schematic view showing a corroded state of a positive electrode plate having no rib for suppressing lattice expansion of the positive electrode plate.
【図６】正極板の格子伸び押さえ用リブを用いた正極板
の腐食状態を示す模式図FIG. 6 is a schematic diagram showing a corrosion state of a positive electrode plate using a rib for suppressing lattice expansion of the positive electrode plate.
【図７】正極板の格子の粒界腐食の状態を示す模式図FIG. 7 is a schematic diagram showing the state of intergranular corrosion of the lattice of the positive electrode plate.
【図８】本発明の実施例１を示す上視図FIG. 8 is a top view showing the first embodiment of the present invention.
【図９】本発明の実施例２を示す上視図FIG. 9 is a top view showing a second embodiment of the present invention.
【図１０】本発明の実施例３を示す上視図FIG. 10 is a top view showing a third embodiment of the present invention.
【図１１】本発明の実施例の正極格子の上視図FIG. 11 is a top view of the positive electrode grid according to the embodiment of the present invention.
【図１２】正極格子の縦桟断面積の総和と横桟断面積の
総和との比と寿命性能との関係を示す図FIG. 12 is a diagram showing the relationship between the ratio of the total of the vertical cross-sectional areas of the positive electrode grid to the total of the horizontal cross-sectional areas and the life performance.
１１ 短絡防止板
１５ａ、１５ｂ、１５ｃ、１５ｄ、１５ｅ、１５ｆ、１
５ｇ、１５ｈ 正極板の格子伸び押さえ用リブ
２１、２１ａ、２１ｂ、２１ｃ 正極板
２２ 劣化した正極板
２５ａ、２５ｂ、２５ｃ 正極格子
２６ａ、２６ｂ 正極活物質
２７ 正極格子の縦桟
２８ 正極格子の横桟
３１、３１ａ、３１ｂ、３１ｃ、３１ｄ 負極板
４１ ガラスセパレータ
５１ 正極ストラップ
５２ 負極ストラップ
６３、６４、６５ 蓄電池蓋
９１ 正極板格子の腐食した部分11 Short-circuit prevention plates 15a, 15b, 15c, 15d, 15e, 15f, 1
5g, 15h ribs 21, 21a, 21b, 21c for suppressing lattice expansion of the positive electrode plate positive electrode plate 22 deteriorated positive electrode plates 25a, 25b, 25c positive electrode grids 26a, 26b positive electrode active material 27 vertical bars 28 of the positive electrode grid horizontal rungs of the positive electrode grid 31, 31a, 31b, 31c, 31d Negative electrode plate 41 Glass separator 51 Positive electrode strap 52 Negative electrode strap 63, 64, 65 Storage battery lid 91 Corroded portion of positive electrode plate grid
Claims (2)
て設置された鉛蓄電池において、該蓄電池の蓋裏に一体
に形成されたリブであって、前記リブは正極板幅の中心
から正極耳側とは反対の側に位置し、全ての正極板上に
互いに間隔を有して２本以上配されていることを特徴と
する鉛蓄電池。1. A lead storage battery in which a positive electrode ear and a negative electrode ear are aligned and installed on opposite sides, wherein the rib is a rib integrally formed on the back of a lid of the storage battery, and the rib is the center of the width of the positive electrode plate. Is located on the side opposite to the positive electrode ear side, and two or more lead storage batteries are arranged on all of the positive electrode plates with a space therebetween.
極格子の縦桟断面積の総和と横桟断面積の総和との比が
２倍以上であることを特徴する請求項１に記載の鉛蓄電
池。2. The lead acid battery according to claim 1, wherein in the lead acid battery having the ribs, the ratio of the sum of the vertical cross-sectional areas of the positive electrode grid to the sum of the cross-sectional areas of the horizontal cross-sections is twice or more. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002105995A JP2003303578A (en) | 2002-04-09 | 2002-04-09 | Lead accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002105995A JP2003303578A (en) | 2002-04-09 | 2002-04-09 | Lead accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003303578A true JP2003303578A (en) | 2003-10-24 |
Family
ID=29390447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002105995A Pending JP2003303578A (en) | 2002-04-09 | 2002-04-09 | Lead accumulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003303578A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014239027A (en) * | 2013-05-07 | 2014-12-18 | 株式会社Ｇｓユアサ | Control valve type lead-acid battery |
-
2002
- 2002-04-09 JP JP2002105995A patent/JP2003303578A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014239027A (en) * | 2013-05-07 | 2014-12-18 | 株式会社Ｇｓユアサ | Control valve type lead-acid battery |
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