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JP6522832B1 - Lead storage battery - Google Patents

Lead storage battery Download PDF

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Publication number
JP6522832B1
JP6522832B1 JP2018104826A JP2018104826A JP6522832B1 JP 6522832 B1 JP6522832 B1 JP 6522832B1 JP 2018104826 A JP2018104826 A JP 2018104826A JP 2018104826 A JP2018104826 A JP 2018104826A JP 6522832 B1 JP6522832 B1 JP 6522832B1
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positive electrode
strap
pole
electrode plate
lead
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JP2019212381A (en
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吉田 英明
英明 吉田
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Furukawa Battery Co Ltd
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Furukawa Battery Co Ltd
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Priority to JP2018104826A priority Critical patent/JP6522832B1/en
Priority to PCT/JP2019/019268 priority patent/WO2019230396A1/en
Priority to CN201980002565.4A priority patent/CN110870100B/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/531Electrode connections inside a battery casing
    • H01M50/54Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • H01M50/541Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges for lead-acid accumulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/06Lead-acid accumulators
    • H01M10/12Construction or manufacture
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/14Electrodes for lead-acid accumulators

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

【課題】本発明は、中容量以上でありながら比較的小さな電流しか流さない鉛蓄電池の長期間に亘る運用において発生する正極板の伸びに起因する正極ストラップの破断を、効果的に防止し得る構造を有する鉛蓄電池を提供する。【解決手段】本発明は、正極板と負極板とを隔離板を介して交互に積層した極板群、上記極板群の同極性同士の極板の耳部を連結したストラップ、及び、上記ストラップと極柱とを接続した極柱の座、を備える鉛蓄電池において、正極側の極柱の座と正極ストラップとの接合部分の二つのエッジ部から、夫々のエッジ部の同側に存在する、上記正極ストラップの長さ方向の端部までの距離が、0〜20mmであり、上記正極ストラップの幅が、10〜25mmであり、かつ、上記正極ストラップの厚さが、5〜15mmであり、加えて、耳部と足部とを除く正極板の高さが180mm以上であることを特徴とする鉛蓄電池である。【選択図】なしAn object of the present invention is to effectively prevent breakage of a positive electrode strap due to elongation of a positive electrode plate which occurs in long-term operation of a lead-acid battery which passes only a relatively small current while having a medium capacity or more. Provided is a lead storage battery having a structure. According to the present invention, there is provided an electrode plate group in which a positive electrode plate and a negative electrode plate are alternately stacked via a separator, a strap in which the ear portions of the same polarity electrode plates of the above electrode plate group are connected, In a lead-acid battery comprising a pole-pillar seat connecting a strap and a pole-pillar, two edges of a junction of a pole-pole seat of a positive electrode side and a positive electrode strap are present on the same side of each edge The distance to the end of the positive electrode strap in the longitudinal direction is 0 to 20 mm, the width of the positive electrode strap is 10 to 25 mm, and the thickness of the positive electrode strap is 5 to 15 mm In addition, the lead storage battery is characterized in that the height of the positive electrode plate excluding the ear portion and the foot portion is 180 mm or more. 【Selection chart】 None

Description

本発明は、鉛蓄電池に関し、更に詳しくは、中容量以上でありながら比較的小さな電流しか流さない鉛蓄電池における、正極ストラップの寸法、及び、上記正極ストラップと、該正極ストラップと正極極柱とを接続する正極側の極柱の座(以下、「正極極柱の座」と言うことがある。)との接合位置に関するものである。 The present invention relates to a lead-acid battery, and more particularly, in a lead-acid battery having medium capacity or more but passing a relatively small current, the dimensions of the positive electrode strap, the positive electrode strap, the positive electrode strap and the positive electrode pole The present invention relates to the joining position with the seat of the positive pole side of the positive electrode side to be connected (hereinafter sometimes referred to as "the seat of the positive pole column").

従来、鉛又は鉛合金を主成分とする基板に正極活物質ペーストを充填して成る複数の正極板と、鉛又は鉛合金を主成分とする基板に負極活物質ペーストを充填して成る複数の負極板とを、ガラス繊維を主体とする隔離板を介して交互に積層して形成された極板群を、電槽内に収容し、上記極板群中の同極性同士の極板の耳部をストラップにより連結し、該ストラップに接続された極柱の座に極柱を設けた鉛蓄電池が広く知られている。また、近年、このような鉛蓄電池に対する長寿命化の要求がますます高まってきており、産業用鉛蓄電池においては、15年以上、例えば、20年の寿命が必要とされる品種もある。 Conventionally, a plurality of positive electrode plates obtained by filling a positive electrode active material paste in a substrate containing lead or a lead alloy as a main component, and a plurality of negative electrodes containing a negative electrode active material paste filled in a substrate containing a lead or a lead alloy as a main component An electrode plate group formed by alternately laminating a negative electrode plate through a separator mainly composed of glass fibers is accommodated in a battery case, and the ears of the electrode plates of the same polarity in the electrode plate group Lead-acid batteries are widely known, in which the parts are connected by a strap and the pole post is provided at the seat of the pole post connected to the strap. Further, in recent years, the demand for extending the life of such lead storage batteries has been increasingly increased, and there is also a type of industrial lead storage battery that requires a life of 15 years or more, for example, 20 years.

鉛蓄電池の長寿命化を図るために、例えば、複数の極板の各耳部を鉛あるいは鉛合金からなるストラップで接続した極板群を有する鉛蓄電池において、前記各耳部の板面方向と平行方向の前記ストラップの断面積が、極柱がある部分から離れるにつれて次第に小さくなっていることを特徴とする鉛蓄電池が知られている(特許文献1)。該発明は、大容量であってかつ大電流を流す鉛蓄電池に関するものであり、大電流で放電した際に生ずる温度上昇によるストラップの溶断を防止し、かつ、無駄な鉛又は鉛合金を極力少なくし得るストラップの形状を提案するものである。 In order to prolong the life of the lead storage battery, for example, in a lead storage battery having an electrode plate group in which each ear of a plurality of electrode plates is connected by a strap made of lead or lead alloy, the plate surface direction of each ear is A lead-acid battery is known in which the cross-sectional area of the straps in the parallel direction gradually decreases with distance from a portion where a pole is present (Patent Document 1). The present invention relates to a lead-acid battery having a large capacity and flowing a large current, which prevents the breakage of the strap due to the temperature rise that occurs when discharged with a large current, and minimizes wasteful lead or lead alloy as much as possible. It proposes a possible strap shape.

特開2000−173579号公報JP, 2000-173579, A

本発明は、中容量以上でありながら比較的小さな電流しか流さない鉛蓄電池において、長期間に亘る運用において発生する正極板の伸びに起因する正極ストラップの破断を、効果的に防止し得る構造を有する鉛蓄電池を提供するものである。 The present invention has a structure capable of effectively preventing the breakage of the positive electrode strap due to the extension of the positive electrode plate occurring in a long-term operation, in a lead-acid battery having a medium current or more but passing a relatively small current. To provide a lead storage battery.

上記特許文献1記載の発明は、大容量であってかつ大電流を流す鉛蓄電池に関するものであり、大電流を流した際に発生する熱による、ストラップの溶断を回避する構造を提供するものである。例えば、実施例では、2V−1,000Ahの鉛蓄電池において、3C10A(3,000A)の大電流で放電した際のストラップ温度を測定し、ストラップの溶断の有無を観察して評価している。しかし、容量の大きい中容量以上の鉛蓄電池であっても、用途によっては、0.6C10A以下の小さな電流しか流さないような鉛蓄電池においては、そもそも、放電電流により温度上昇が生じて、ストラップが溶断することなど起こり得ない。 The invention described in Patent Document 1 relates to a lead-acid battery which has a large capacity and flows a large current, and provides a structure for avoiding the melting of a strap due to the heat generated when a large current flows. is there. For example, in the embodiment, the lead-acid battery 2V-1,000Ah, strap temperatures at the time of discharge with a large current of 3C 10 A (3,000A) is measured and evaluated by observing the presence or absence of blowing of the strap There is. However, even in medium capacity lead-acid batteries with large capacity, depending on the application, in lead-acid batteries in which only a small current of 0.6C 10 A or less flows, the temperature rise is primarily caused by the discharge current, It can not happen that the strap melts.

しかし、このような小さな電流しか流さない鉛蓄電池であっても、使用期間が15〜20年という長期に及ぶようになると、ストラップが折れて破断してしまうという現象が報告されるようになってきた。本発明者は、この原因が何によるものかを追及したところ、使用期間が長期に及ぶと、その間の浮動充電又は充放電サイクル運用によって、正極板に腐食が生じて正極板自体が伸び、そして、正極ストラップが下から押し上げられて湾曲し、それにより、とりわけ、正極極柱の座と正極ストラップとの接合部分のエッジ部に、応力が集中してクラックが発生し、そして、クラックが発生した部分において腐食が加速されるためであることを見つけ出した。とりわけ、正極板の高さが大きいもの、例えば、耳部と足部とを除く正極板の高さが180mm以上、更には200mm以上であると、正極ストラップが破断する危険性が極めて大きくなることを見出した。 However, even with lead-acid batteries that can only carry such small currents, it has been reported that the strap breaks and breaks when the service life is extended to 15 to 20 years. The The inventor investigated what caused this cause, but when the service life is extended, floating charge or charge / discharge cycle operation during that time causes corrosion in the positive electrode plate and the positive electrode plate itself stretches, and The positive electrode strap was pushed up from below and curved, thereby causing stress concentration and cracking, especially at the edge of the joint between the positive electrode pole seat and the positive electrode strap, and the crack occurred. It was found that the corrosion was accelerated in the part. In particular, when the height of the positive electrode plate is large, for example, if the height of the positive electrode plate excluding the ear portion and the foot portion is 180 mm or more, and further 200 mm or more, the risk of breakage of the positive electrode strap becomes extremely large. Found out.

上記の正極ストラップの破断を防止するためには、正極ストラップをより頑丈なものにすればよい。しかし、それでは鉛蓄電池の使用材料量及び全体重量の増加等により、製造コストが著しく増大してしまう。また、正極ストラップを多少頑丈にした程度では、腐食による極板の伸びの力は強靭なため、ストラップの湾曲、また、それに伴う破断は抑制できない。そこで、本発明者は、如何にすれば、このようなコストの増大を伴わずに正極ストラップの破断を防止し得るかについて、種々検討を重ねた。その結果、正極極柱の座と正極ストラップとの接合部分の二つのエッジ部から、夫々のエッジ部の同側に存在する、正極ストラップの長さ方向の端部までの距離(a−1,a−1’)、正極ストラップの幅(b−1)及び正極ストラップの厚さ(c−1)を、下記所定の寸法にすれば、上記課題を効果的に解決し得ることを見出した。そして、これらに加えて、好ましくは、正極極柱の座と上記正極極柱との接合部分の長さ(e−1)を、著しく短くすることができることをも見出したのである。 In order to prevent breakage of the above positive electrode strap, the positive electrode strap may be made more robust. However, this increases the manufacturing cost significantly due to the increase in the amount of materials used and the overall weight of the lead-acid battery. In addition, to the extent that the positive electrode strap is made somewhat strong, the force of electrode plate elongation due to corrosion is strong, so that the curvature of the strap and the breakage thereof can not be suppressed. Therefore, the present inventors repeatedly conducted various studies as to how to prevent breakage of the positive electrode strap without such an increase in cost. As a result, the distance from the two edge portions of the junction of the positive pole pole seat and the positive pole strap to the end in the longitudinal direction of the positive pole strap located on the same side of each edge (a-1, It has been found that the above problems can be effectively solved by setting the width a-1 ′), the width (b-1) of the positive electrode strap and the thickness (c-1) of the positive electrode strap to the following predetermined dimensions. And, in addition to these, preferably, it has also been found that the length (e-1) of the junction between the seat of the positive electrode pole and the positive electrode pole can be significantly shortened.

即ち、本発明は、
(1)正極板と負極板とを隔離板を介して交互に積層した極板群、上記極板群の同極性同士の極板の耳部を連結したストラップ、及び、上記ストラップと極柱とを接続した極柱の座、を備える鉛蓄電池において、正極側の極柱の座と正極ストラップとの接合部分の二つのエッジ部から、夫々のエッジ部の同側に存在する、上記正極ストラップの長さ方向の端部までの距離(a−1,a−1’)が、0〜20mmであり、上記正極ストラップの幅(b−1)が、10〜25mmであり、かつ、上記正極ストラップの厚さ(c−1)が、5〜15mmであり、加えて、耳部と足部とを除く正極板の高さ(d−1)が180mm以上であることを特徴とする鉛蓄電池である。
That is, the present invention
(1) An electrode plate group in which a positive electrode plate and a negative electrode plate are alternately stacked via a separator, a strap in which the ear portions of the electrode plates of the same polarity of the electrode plate group are connected, the strap and the pole column In the lead-acid battery, the positive electrode strap of the positive electrode strap, which is located on the same side of each edge portion from the two edge portions of the joint portion between the positive pole seat and the positive electrode strap. The distance (a-1, a-1 ') to the end in the length direction is 0 to 20 mm, the width (b-1) of the positive electrode strap is 10 to 25 mm, and the positive electrode strap The lead storage battery is characterized in that the thickness (c-1) of the positive electrode plate is 5 to 15 mm and, in addition, the height (d-1) of the positive electrode plate excluding the ear portion and the foot portion is 180 mm or more. is there.

好ましい態様として、
(2)上記の正極側の極柱の座と正極極柱との接合部分の長さ(e−1)が、該正極極柱の長手方向に垂直な断面において、該正極極柱の断面の周の長さの60%以下である、上記(1)記載の鉛蓄電池、
(3)上記の正極側の極柱の座と正極極柱との接合部分の長さ(e−1)が、該正極極柱の長手方向に垂直な断面において、該正極極柱の断面の周の長さの30〜60%である、上記(1)記載の鉛蓄電池、
(4)上記の正極側の極柱の座と正極ストラップとの接合部分の二つのエッジ部から、夫々のエッジ部の同側に存在する、上記正極ストラップの長さ方向の端部までの距離(a−1,a−1’)が、10〜20mmである、上記(1)〜(3)のいずれか一つに記載の鉛蓄電池、
(5)上記正極ストラップの幅(b−1)が、10〜20mmである、上記(1)〜(4)のいずれか一つに記載の鉛蓄電池、
(6)上記正極ストラップの厚さ(c−1)が、5〜10mmである、上記(1)〜(5)のいずれか一つに記載の鉛蓄電池、
(7)耳部と足部とを除く上記正極板の高さ(d−1)が、200mm以上である、上記(1)〜(6)のいずれか一つに記載の鉛蓄電池、
(8)運用時の最大電流が、0.6C10アンペア(A)以下である、上記(1)〜(7)のいずれか一つに記載の鉛蓄電池、
(9)運用時の最大電流が、0.1〜0.3C10アンペア(A)である、上記(1)〜(7)のいずれか一つに記載の鉛蓄電池、
(10)上記正極ストラップの長さ(全長)が、250〜300mmである、上記(1)〜(9)のいずれか一つに記載の鉛蓄電池、
(11)上記正極ストラップの長さ(全長)が、260〜290mmである、上記(1)〜(9)のいずれか一つに記載の鉛蓄電池
を挙げることができる。
As a preferred embodiment,
(2) In the cross section perpendicular to the longitudinal direction of the positive electrode pole, the length (e-1) of the junction between the seat of the positive pole and the positive pole side of the positive pole side is the cross section of the positive pole The lead storage battery according to the above (1), which is 60% or less of the circumferential length,
(3) In the cross section perpendicular to the longitudinal direction of the positive electrode pole, the length (e-1) of the junction between the seat of the positive pole and the positive pole side of the positive pole side is the cross section of the positive pole The lead storage battery according to the above (1), which is 30 to 60% of the circumferential length
(4) The distance from the two edge portions of the joint portion between the positive pole side seat of the positive electrode side and the positive electrode strap to the end in the longitudinal direction of the positive electrode strap located on the same side of each edge portion The lead storage battery according to any one of the above (1) to (3), wherein (a-1, a-1 ′) is 10 to 20 mm,
(5) The lead storage battery according to any one of (1) to (4), wherein the width (b-1) of the positive electrode strap is 10 to 20 mm,
(6) The lead storage battery according to any one of the above (1) to (5), wherein the thickness (c-1) of the positive electrode strap is 5 to 10 mm,
(7) The lead storage battery according to any one of the above (1) to (6), wherein the height (d-1) of the positive electrode plate excluding the ear portion and the foot portion is 200 mm or more.
(8) The lead storage battery according to any one of the above (1) to (7), wherein the maximum current at the time of operation is 0.6 C 10 amps (A) or less,
(9) The lead storage battery according to any one of the above (1) to (7), wherein the maximum current at the time of operation is 0.1 to 0.3 C 10 amps (A),
(10) The lead storage battery according to any one of (1) to (9), wherein a length (full length) of the positive electrode strap is 250 to 300 mm,
(11) The lead storage battery according to any one of the above (1) to (9), which has a length (full length) of the positive electrode strap of 260 to 290 mm.

本発明の鉛蓄電池によれば、中容量以上でありながら比較的小さな電流しか流さない鉛蓄電池の長期間に亘る運用において発生する、正極板の腐食に伴う伸びによる正極ストラップの破断を、効果的に防止し得るばかりではなく、製造コストを低減することができる。 According to the lead-acid battery of the present invention, it is effective to break the positive electrode strap due to the elongation caused by the corrosion of the positive electrode plate, which occurs in the long-term operation of the lead-acid battery having medium capacity or more but passing relatively small current. Not only can be prevented, but also the manufacturing cost can be reduced.

本発明の鉛蓄電池の一実施態様を示す外観図である。It is an outline view showing one embodiment of a lead acid battery of the present invention. 本発明の鉛蓄電池に収容される極板群の一実施態様を示す正面図である。It is a front view which shows one embodiment of the electrode plate group accommodated in the lead acid battery of this invention. 本発明の鉛蓄電池の蓋を取り外した状態における平面図である。It is a top view in the state where the lid of the lead acid battery of the present invention was removed. 本発明の鉛蓄電池の正極ストラップ、正極極柱の座及び正極極柱を示す概略図である。It is the schematic which shows the positive electrode strap of the lead acid battery of this invention, the seat of a positive electrode pole, and a positive electrode pole post. 極板の高さ(d)を示す概略図である。It is the schematic which shows the height (d) of an electrode plate.

本発明の鉛蓄電池は、正極板、例えば、鉛又は鉛合金を主成分とする基板に正極活物質ペーストを充填して成る正極板と、負極板、例えば、鉛又は鉛合金を主成分とする基板に負極活物質ペーストを充填して成る負極板とを、隔離板、例えば、ガラス繊維を主体とするリテーナマットを介して交互に積層した極板群;上記極板群の同極性同士の極板の耳部を連結したストラップ;及び、上記ストラップと極柱とを接続した極柱の座を備える。ここで、上記ストラップ及び極柱の座は、好ましくは、鉛又は鉛合金を主成分とするものである。該鉛蓄電池は、従来公知の方法で製造することができる。 The lead-acid battery of the present invention comprises a positive electrode plate, for example, a positive electrode plate formed by filling a positive electrode active material paste in a substrate containing lead or a lead alloy as a main component, and a negative electrode plate, for example, lead or a lead alloy. An electrode plate group in which a negative electrode plate formed by filling a substrate with a negative electrode active material paste is alternately laminated via a separator, for example, a retainer mat mainly made of glass fiber; the same polarity electrodes of the above electrode plate group A strap having a plate ear connected thereto, and a pole post that connects the strap and the pole post. Here, the strap and the seat of the pole column are preferably made mainly of lead or a lead alloy. The lead storage battery can be manufactured by a conventionally known method.

以下、本発明の鉛蓄電池について図面を参照して説明する。図1は、本発明の鉛蓄電池(A)の一実施態様を示す外観図であり、上図が平面図であり、下図が正面図である。図2は、図1に示した本発明の鉛蓄電池に収容される極板群(10)の一実施態様を示す正面図である。左図が正極側(10−1)を示し、右図が負極側(10−2)を示す。図3は、図1に示した本発明の鉛蓄電池(A)の蓋(2)を取り外した状態における平面図である。鉛蓄電池(A)は、上面に開口部を有する、中空の略直方体である電槽(1)と、該電槽(1)の開口部の周縁部(1−1)に熱融着等により接合された蓋(2)とを備える。ここで、電槽(1)及び蓋(2)は、合成樹脂、例えば、ポリプロピレン、ABS樹脂等により形成されている。蓋(2)には、極柱(4)、即ち、正極極柱(4−1)及び負極極柱(4−2)が挿通される端子挿通孔が備えられており、これらの端子挿通孔に鉛合金製のブッシングを蓋(2)の合成樹脂材料内にインサートして成形されている。また、正極極柱(4−1)及び負極極柱(4−2)は、ブッシングと一体的に溶接されると共に、これらの先端部は蓋(2)の上部に突出して、夫々、正極端子及び負極端子を形成している。また、ブッシングと、該ブッシングと該極柱の溶接箇所の上面にエポキシ樹脂が注入され、それを硬化させて端子封口部(5)が形成される。電槽(1)内には、蓋(2)の上面に設けられた注液口より、所定濃度の希硫酸から成る電解液が注入される。該注液口には、ゴム弁が被せられ、その上から排気栓(3)が装着されて、鉛蓄電池(A)が密閉される。 Hereinafter, a lead storage battery of the present invention will be described with reference to the drawings. FIG. 1 is an external view showing an embodiment of the lead storage battery (A) of the present invention, the upper view is a plan view, and the lower view is a front view. FIG. 2 is a front view showing an embodiment of an electrode plate group (10) accommodated in the lead-acid battery of the present invention shown in FIG. The left figure shows the positive electrode side (10-1), and the right figure shows the negative electrode side (10-2). FIG. 3 is a plan view of the lead storage battery (A) of the present invention shown in FIG. 1 with the cover (2) removed. The lead storage battery (A) is a hollow substantially rectangular parallelepiped battery case (1) having an opening on the upper surface, and heat fusion or the like to the peripheral portion (1-1) of the opening of the battery case (1) And a joined lid (2). Here, the battery case (1) and the lid (2) are formed of a synthetic resin such as polypropylene or an ABS resin. The lid (2) is provided with a terminal insertion hole through which the pole post (4), ie, the positive pole post (4-1) and the negative pole post (4-2) are inserted. A lead alloy bushing is inserted into the synthetic resin material of the lid (2) for molding. Further, the positive electrode pole column (4-1) and the negative electrode pole column (4-2) are welded integrally with the bushing, and their tips project to the upper part of the lid (2), and each positive electrode terminal And the negative electrode terminal is formed. In addition, an epoxy resin is injected onto the bushing, and the upper surface of the welding portion of the bushing and the pole column, and the epoxy resin is cured to form the terminal sealing portion (5). An electrolytic solution consisting of diluted sulfuric acid of a predetermined concentration is injected into the battery case (1) from a liquid injection port provided on the upper surface of the lid (2). A rubber valve is put on the liquid inlet, and an exhaust plug (3) is mounted thereon, and the lead storage battery (A) is sealed.

電槽(1)内には、例えば、図2に示されているような極板群(10)が収容される。極板群(10)は、複数の正極板(11−1)と複数の負極板(11−2)とを備え、これら正極板(11−1)と負極板(11−2)とを隔離板(図示せず)、例えば、微細ガラス繊維を主体としたマット状セパレータを介して交互に積層されて形成されている。正極板(11−1)は、その上方に突出する正極耳部(12−1)を備え、これらは、極板群(10−1)の積層方向に延びる正極ストラップ(16−1)により一体的に連結されている。同様に、負極板(11−2)も、その上方に突出する負極耳部(12−2)を備え、これらは、極板群(10−2)の積層方向に延びる負極ストラップ(16−2)により一体的に連結されている。 図3に示されているように、正極ストラップ(16−1)及び負極ストラップ(16−2)は、いずれも、極柱の座(15)[正極側(15−1)、負極側(15−2)]を介して、夫々、正極端子となる正極極柱(4−1)及び負極端子となる負極極柱(4−2)に接続されている。 In the battery case (1), for example, an electrode plate group (10) as shown in FIG. 2 is accommodated. The electrode plate group (10) includes a plurality of positive electrode plates (11-1) and a plurality of negative electrode plates (11-2), and separates the positive electrode plate (11-1) and the negative electrode plate (11-2). A plate (not shown), for example, is alternately laminated via a mat-like separator mainly composed of fine glass fibers. The positive electrode plate (11-1) is provided with a positive electrode ear (12-1) projecting upward, and these are integrated by a positive electrode strap (16-1) extending in the stacking direction of the electrode plate group (10-1) Are linked together. Similarly, the negative electrode plate (11-2) also has a negative electrode ear (12-2) projecting upward, which extends in the stacking direction of the electrode plate group (10-2). ) Are integrally connected. As shown in FIG. 3, the positive electrode strap (16-1) and the negative electrode strap (16-2) both have a pole post (15) [positive electrode side (15-1), negative electrode side (15)] 2) is connected to the positive electrode pole column (4-1) serving as the positive electrode terminal and the negative electrode pole column (4-2) serving as the negative electrode terminal, respectively.

図3に示されているように、極板集電部(13)は、極柱の座(15)とストラップ(16)とから構成されている。ここで、ストラップ(16)は、極板群(10)の積層方向に向かって平面略長方形に形成されている。また、極柱の座(15)は、平面略三角形状に形成されている。極柱の座(15)は、黄銅と鉛又は鉛合金を主成分とする極柱(4)と一体化されて形成されている。極板集電部(13)は、極柱(4)に一体的に設けられた極柱の座(15)とストラップ(16)とを溶接することにより一体的に構成される。 As shown in FIG. 3, the electrode plate current collector (13) comprises a pole post (15) and a strap (16). Here, the strap (16) is formed in a substantially rectangular planar shape in the stacking direction of the electrode plate group (10). In addition, the pole post (15) is formed in a substantially triangular planar shape. The pole post (15) is formed integrally with the pole post (4) mainly composed of brass and lead or lead alloy. The electrode plate current collecting portion (13) is integrally formed by welding the pole post (15) and the strap (16) integrally provided on the pole post (4).

図4は、上記本発明の鉛蓄電池(A)の正極ストラップ(16−1)、正極極柱の座(15−1)及び正極極柱(4−1)のみを取り出して示した概略図であり、上図が平面図であり、下図が正面図である。本発明においては、正極極柱の座(15−1)と正極ストラップ(16−1)との接合部分の二つのエッジ部(20−1a,20−1a’)から、夫々のエッジ部(20−1a,20−1a’)の同側に存在する、上記正極ストラップ(16−1)の長さ方向の端部(16−1a,16−1a’)までの距離(a−1,a−1’)が、0〜20mmであり、好ましくは10〜20mmである。ここで、該距離(a−1,a−1’)は同一であっても異なっていてもよい。正極ストラップ(16−1)の幅(b−1)は、10〜25mmであり、好ましくは10〜20mmである。また、正極ストラップ(16−1)の厚さ(c−1)は、5〜15mmであり、好ましくは5〜10mmである。エッジ部(20−1a,20−1a’)から正極ストラップ端部(16−1a,16−1a’)までの距離(a−1,a−1’)、正極ストラップ(16−1)の幅(b−1)及び正極ストラップ(16−1)の厚さ(c−1)を上記の範囲にすることにより、正極板(11−1)の腐食による伸びに起因する正極ストラップ(16−1)の破断を長期間に亘って効果的に防止することができる。また、正極ストラップ(16−1)の幅(b−1)及び厚さ(c−1)が上記上限を超えても、破断防止効果に著しい改善は認められず、余計な材料の使用によりコスト高を招くばかりではなく、電池自体の質量が増加してしまう。また、本発明の鉛蓄電池においては、極板(11)の高さ(d)、とりわけ、正極板(11−1)の高さ(d−1)は180mm以上、好ましくは200mm以上であることが必要であり、最大約500mmである。上記下限未満では、そもそも、正極板の腐食による正極板の伸び自体が小さく、正極ストラップ(16−1)が破断するほどの応力が正極ストラップ(16−1)にかかることがない。ここで、極板(11)の高さ(d)とは、図5に示されているように、耳部(12)及び足部(17)を除いた極板の高さを言う。加えて、本発明の鉛蓄電池(A)においては、正極極柱の座(15−1)と正極極柱(4−1)との接合部分の長さ(e−1)は、正極極柱(4−1)の長手方向に垂直な断面における正極極柱(4−1)の断面の周の長さの60%以下であることが好ましく、正極極柱(4−1)の断面の周の長さの30〜60%であることがより好ましい。ここで、正極極柱の座(15−1)は、通常、ほぼ一定の厚さを有する平板であり、その厚さは、好ましくは5〜15mm、より好ましくは8〜10mmである。また、正極ストラップ(16−1)の長さ(全長)は、特に制限はないが、好ましくは250〜300mmであり、より好ましくは260〜290mmである。ここで、ストラップ(16)は、鉛又は鉛合金を主成分とするものであり、その硬度は低く比較的柔らかいものであることから、上記の距離(a−1,a−1’)は、正極ストラップ(16−1)の長さにほぼ無関係であり、上記範囲であれば本発明の効果を達成することができる。一方、負極側においては腐食による負極板(11−2)の伸びが発生することがない故に、負極側の極柱の座(以下、「負極極柱の座」と言うことがある。)(15−2)と負極ストラップ(16−2)との接合部分の二つのエッジ部(20−2a,20−2a’)から、夫々のエッジ部(20−2a,20−2a’)の同側に存在する、上記負極ストラップ(16−2)の長さ方向の端部(16−2a,16−2a’)までの距離(a−2,a−2’)、負極ストラップ(16−2)の幅(b−2)及び厚さ(c−2)、並びに、負極極柱の座(15−2)と負極極柱(4−2)との接合部分の長さ(e−2)は、いずれも任意である。但し、上記寸法を余りに小さくすると、たとえ、小さな電流しか流さなくても、鉛蓄電池の運用中に負極板集電部(13−2)が局部的に発熱して溶断するなどの問題が発生するおそれがある。従って、通常、負極ストラップ(16−2)の幅(b−2)及び厚さ(c−2)を夫々10mm以上及び5mm以上、並びに、負極極柱の座(15−2)と負極極柱(4−2)との接合部分の長さ(e−2)を、負極極柱の長手方向に垂直な断面において、該負極極柱の断面の周の長さの30%以上にしておけばよく、また、負極極柱の座(15−2)の厚さは、5mm以上にしておけばよい。負極板(11−2)の寸法は、正極板とほぼ同一であり、例えば、負極板(11−2)の高さ(d−2)は、通常、正極板の高さ(d−1)と同一である。 FIG. 4 is a schematic view showing only the positive electrode strap (16-1), the positive electrode pole seat (15-1) and the positive electrode pole (4-1) of the lead storage battery (A) of the present invention. The upper figure is a plan view and the lower figure is a front view. In the present invention, the two edge portions (20-1a, 20-1a ') of the joint portion between the seat (15-1) of the positive electrode pole column and the positive electrode strap (16-1) 1a, 20-1a ′), and the distance (a−1, a−) to the end (16-1a, 16-1a ′) in the lengthwise direction of the positive electrode strap (16-1). 1 ') is 0 to 20 mm, preferably 10 to 20 mm. Here, the distances (a-1, a-1 ') may be the same or different. The width (b-1) of the positive electrode strap (16-1) is 10 to 25 mm, preferably 10 to 20 mm. The thickness (c-1) of the positive electrode strap (16-1) is 5 to 15 mm, preferably 5 to 10 mm. Distance (a-1, a-1 ') from the edge (20-1a, 20-1a') to the positive electrode strap end (16-1a, 16-1a '), width of the positive electrode strap (16-1) By setting the thickness (c-1) of (b-1) and the positive electrode strap (16-1) in the above range, the positive electrode strap (16-1) resulting from the elongation due to the corrosion of the positive electrode plate (11-1) Can be effectively prevented over a long period of time. In addition, even if the width (b-1) and thickness (c-1) of the positive electrode strap (16-1) exceed the above-mentioned upper limit, no significant improvement is observed in the fracture prevention effect, and the cost is increased by the use of unnecessary materials Not only does it lead to high, the mass of the battery itself increases. In the lead storage battery of the present invention, the height (d) of the electrode plate (11), in particular, the height (d-1) of the positive electrode plate (11-1) is 180 mm or more, preferably 200 mm or more Is required, up to about 500 mm. Below the lower limit, the elongation itself of the positive electrode plate due to the corrosion of the positive electrode plate is small, and the positive electrode strap (16-1) is not stressed enough to break the positive electrode strap (16-1). Here, the height (d) of the electrode plate (11) refers to the height of the electrode plate excluding the ear (12) and the foot (17) as shown in FIG. In addition, in the lead storage battery (A) of the present invention, the length (e-1) of the junction between the positive pole post (15-1) and the positive pole post (4-1) is the positive pole post Preferably, it is 60% or less of the perimeter of the cross section of the positive electrode pole column (4-1) in the cross section perpendicular to the longitudinal direction of (4-1), and the perimeter of the cross section of the positive electrode pole column (4-1) More preferably, it is 30 to 60% of the length of Here, the positive electrode pole seat (15-1) is usually a flat plate having a substantially constant thickness, and the thickness is preferably 5 to 15 mm, more preferably 8 to 10 mm. Further, the length (full length) of the positive electrode strap (16-1) is not particularly limited, but is preferably 250 to 300 mm, more preferably 260 to 290 mm. Here, since the strap (16) is mainly composed of lead or lead alloy and has a low hardness and is relatively soft, the above distance (a-1, a-1 ') is The length of the positive electrode strap (16-1) is substantially irrelevant, and within the above range, the effects of the present invention can be achieved. On the other hand, since no elongation of the negative electrode plate (11-2) is generated due to corrosion on the negative electrode side, the negative pole side of the negative pole seat (hereinafter sometimes referred to as "negative pole pole seat") ( 15-2) and the same side of each edge (20-2a, 20-2a ') from the two edges (20-2a, 20-2a') at the junction of the negative electrode strap (16-2) Distance (a-2, a-2 ') to the end (16-2a, 16-2a') in the lengthwise direction of the negative electrode strap (16-2), which is present in the negative electrode strap (16-2) Width (b-2) and thickness (c-2), and the length (e-2) of the junction between the negative pole post (15-2) and the negative pole post (4-2) , Any is optional. However, if the above-mentioned size is too small, even if only a small current flows, problems such as local heat generation and melting of the negative electrode current collector (13-2) occur during operation of the lead storage battery. There is a fear. Therefore, usually, the width (b-2) and thickness (c-2) of the negative electrode strap (16-2) are respectively 10 mm or more and 5 mm or more, and the negative electrode pole seat (15-2) and the negative electrode pole column The length (e-2) of the junction with (4-2) should be at least 30% of the circumferential length of the cross section of the negative electrode pole column in the cross section perpendicular to the longitudinal direction of the negative electrode pole column Also, the thickness of the negative electrode pole seat (15-2) may be 5 mm or more. The dimension of the negative electrode plate (11-2) is substantially the same as that of the positive electrode plate. For example, the height (d-2) of the negative electrode plate (11-2) is usually the height (d-1) of the positive electrode plate Is the same as

本発明は、中容量以上でありながら比較的小さな電流しか流さない鉛蓄電池に適用され、運用時の最大電流が、好ましくは0.6C10アンペア(A)以下であり、より好ましくは0.1〜0.3C10アンペア(A)である鉛蓄電池に適用される。なお、0.6C10アンペア(A)を超える電流で充放電を繰り返すと、電池の内部温度の上昇による影響が顕著となる。該温度上昇によって腐食が加速され、それに伴う極板の伸びが著しく、ストラップが早期に破断し、短寿命となるおそれがある。ここで、中容量以上の鉛蓄電池とは、通常、定格容量が100Ah〜2,000Ah程度、好ましくは100Ah〜1,000Ah程度、より好ましくは500Ah〜1,000Ah程度の鉛蓄電池を意味する。 The present invention is applied to a lead-acid battery having a medium capacity or more but passing a relatively small current, and the maximum current at the time of operation is preferably 0.6C 10 amperes (A) or less, more preferably 0.1 Applied to lead acid battery which is ~ 0.3C 10 amps (A). In addition, if charging / discharging is repeated by the electric current which exceeds 0.6 C 10 amps (A), the influence by the rise in the internal temperature of a battery will become remarkable. The temperature rise accelerates the corrosion, resulting in a significant extension of the electrode plate, which may lead to premature breakage of the strap and a short life. Here, a medium-capacity or higher capacity lead storage battery generally means a lead storage battery having a rated capacity of about 100 Ah to about 2,000 Ah, preferably about 100 Ah to about 1,000 Ah, and more preferably about 500 Ah to about 1,000 Ah.

以下の実施例において、本発明を更に詳細に説明するが、本発明はこれら実施例により限定されるものではない。 The present invention will be described in more detail in the following examples, but the present invention is not limited by these examples.

(鉛蓄電池の製造)
実施例1〜8及び11〜15、並びに比較例1〜18において使用した鉛蓄電池は、下記の通りに製造した。公知の方法で製造した未化成の正極板(11−1)22枚と負極板(11−2)23枚とを、微細ガラス繊維を主体としたマット状セパレータを介して交互に積層して組み合わせた後、同極性同士の極板の耳部(12−1,12−2)と、予め極柱に接合されている極柱の座(15−1,15−2)とを、足し鉛を溶解させながら溶接してストラップ(16−1,16−2)を形成した。この際、正極側については、極柱の座(15−1)とストラップ(16−1)との接合部分の二つのエッジ部(20−1a,20−1a’ )から、夫々のエッジ部の同側に存在する、ストラップ(16−1)の長さ方向の端部(16−1a,16−1a’)までの距離(a−1,a−1’)、ストラップの幅(b−1)及びストラップの厚さ(c−1)、並びに、ストラップの長さ(L−1)及び極柱の座(15−1)と極柱(4−1)との接合部分の長さ(e−1)を、夫々、表1に示した所定の寸法に調節した。負極側については極柱の座(15−2)とストラップ(16−2)との接合部分の二つのエッジ部(20−2a,20−2a’)から、夫々のエッジ部の同側に存在する、ストラップ(16−2)の長さ方向の端部(16−2a,16−2a’)までの距離(a−2,a−2’)を30mm、ストラップの幅(b−2)を20mm、ストラップの厚さ(c−2)を10mm、ストラップの長さ(L−2)を正極ストラップ長さ(L−1)に10mm加算した長さとし、かつ、極柱の座(15−2)と極柱(4−2)との接合部分の長さ(e−2)を、極柱(4−2)の長手方向に垂直な断面において、極柱(4−2)の断面の周の長さの55%とした。ここで、極柱の座(15−1,15−2)はいずれも平板であり、その厚さはいずれも10mmであった。極柱の座(15−1,15−2)と、足し鉛を溶解させながら溶接してストラップ(16−1,16−2)を形成する際、ストラップの厚みが極柱の座の厚みよりも厚い電池の場合は、溶解させた足し鉛が極柱の座の上部に流れ込まないように治具で遮蔽して溶接した。また、正極極柱(4−1)及び負極極柱(4−2)の長さ方向に垂直な断面の形状はいずれも略円形であり、その直径はいずれも40mmであった。また、極板(正極板及び負極板共)の高さ(d−1,d−2)は400mmとした。このようにして一体化された極板群(10)をポリプロピレン製の電槽(1)に挿入し、ヒートシールによって蓋(2)をして、未化成の鉛蓄電池を製造した。これに比重1.23の電解液を、極板群の理論空間体積の100%となるように調整し注液した。次いで、定格容量の約10倍の電気量で72時間通電して電槽化成を実施した。電槽化成終了後、電解液の補液作業を実施し、次いで、補充電を実施して2V−1,000Ahの鉛蓄電池を製造した。また、実施例9、10及び比較例19〜22においては、極板(正極板及び負極板共)の高さ(d−1,d−2)を180mmとした以外は、上記と同様の操作にて2V−450Ahの鉛蓄電池を製造した。なお、参考例1においては、極板(正極板及び負極板共)の高さ(d−1,d−2)を150mmとした以外は、上記と同様の操作にて2V−375Ahの鉛蓄電池を製造した。また、実施例11及び13は、夫々、実施例1及び5に対して、ストラップの長さ(L−1)を300mmにしたものであり、一方、実施例12及び14は、夫々、実施例1及び5に対して、ストラップの長さ(L−1)を250mmにしたものである。前者においては、セパレータの厚みを厚くして極板の間隔を大きくすることによりストラップの長さを長くし、一方、後者においては、セパレータの厚みを薄くして極板の間隔を小さくすることによりストラップの長さを短くした。同一寸法の電槽に、長さが異なる正極ストラップを備える極板群を挿入すると、極板群と電槽の間に余分な空間が生じたり、極板群が挿入できない等の問題が発生する。従って、本実施例、本比較例及び参考例1においては、最大長さである300mm長の正極ストラップを備える極板群を挿入するのに最適な寸法の電槽を全てに使用し、ストラップの長さが300mm未満の極板群については極板群の両側に適宜、厚みの違うスペーサを挿入して余分空間が生じないように調整した。ここで、上記の各実施例、各比較例及び参考例1において、電池容量当たりの耳部と足部とを除く正極板の格子の鉛量は、いずれもほぼ同一であった。
(Manufacture of lead acid battery)
The lead-acid batteries used in Examples 1 to 8 and 11 to 15 and Comparative Examples 1 to 18 were manufactured as follows. 22 unformed positive electrode plates (11-1) and 23 negative electrode plates (11-2) manufactured by a known method are alternately laminated via a mat-like separator mainly composed of fine glass fibers and combined After that, add the lead of the ears (12-1 and 12-2) of the pole plates of the same polarity and the seats (15-1 and 15-2) of the pole columns joined to the pole columns in advance. While melting, welding was performed to form straps (16-1, 16-2). At this time, for the positive electrode side, the two edge portions (20-1a, 20-1a ') of the joint portion between the pole column seat (15-1) and the strap (16-1) The distance (a-1, a-1 ') to the end (16-1a, 16-1a') in the lengthwise direction of the strap (16-1) present on the same side, the width (b-1) of the strap And the thickness of the strap (c-1), and the length of the strap (L-1) and the length of the junction between the pole post (15-1) and the pole post (4-1) (e) -1) was adjusted to the predetermined dimensions shown in Table 1 respectively. For the negative side, from the two edges (20-2a, 20-2a ') at the junction of the pole-pillar seat (15-2) and the strap (16-2), present on the same side of each edge The distance (a-2, a-2 ') to the end (16-2a, 16-2a') in the longitudinal direction of the strap (16-2) is 30 mm, and the width (b-2) of the strap is 20 mm, thickness of the strap (c-2) is 10 mm, length of the strap (L-2) is 10 mm added to the positive strap length (L-1), and a pole post (15-2) ) Of the joint portion between the pole column (4-2) and the pole column (4-2) in the cross section perpendicular to the longitudinal direction of the pole column (4-2). 55% of the length of the Here, all pole seat (15-1, 15-2) was a flat plate, and the thickness was 10 mm. When forming a strap (16-1, 16-2) by welding while melting the lead of the pole column seat (15-1, 15-2), the thickness of the strap is greater than the thickness of the pole column seat In the case of a thick battery, it was shielded and welded with a jig so that the melted lead would not flow into the upper portion of the pole post. Moreover, the shape of the cross section perpendicular | vertical to the length direction of positive electrode pole column (4-1) and a negative electrode pole column (4-2) was substantially circular in all, and the diameter was 40 mm in all. Moreover, the height (d-1, d-2) of the electrode plate (both the positive electrode plate and the negative electrode plate) was 400 mm. The electrode plate group (10) thus integrated was inserted into a polypropylene battery case (1), and the lid (2) was heat sealed to produce an unformed lead-acid battery. An electrolyte having a specific gravity of 1.23 was adjusted to 100% of the theoretical space volume of the electrode plate group and poured. Next, battery case formation was carried out by energizing for 72 hours with an amount of electricity about 10 times the rated capacity. After the formation of the battery case, a replacement work of the electrolytic solution was performed, and then a supplementary charge was performed to manufacture a 2 V-1,000 Ah lead-acid battery. Moreover, in Examples 9 and 10 and Comparative Examples 19 to 22, the same operation as described above except that the height (d-1, d-2) of the electrode plate (both the positive electrode plate and the negative electrode plate) was 180 mm. 2V-450Ah lead acid battery was manufactured. In addition, in the reference example 1, the lead storage battery of 2V-375Ah is carried out by the same operation as the above except that the height (d-1, d-2) of the electrode plate (both the positive electrode plate and the negative electrode plate) is 150 mm. Manufactured. Further, Examples 11 and 13 are the ones in which the strap length (L-1) is 300 mm with respect to Examples 1 and 5, respectively, while Examples 12 and 14 are Examples. For 1 and 5, the strap length (L-1) is 250 mm. In the former case, the strap length is increased by increasing the separator thickness and the distance between the electrode plates. On the other hand, in the latter case, the thickness of the separator is decreased and the electrode distance is decreased. The length of the strap was shortened. If an electrode plate group provided with positive electrode straps having different lengths is inserted into a battery case of the same size, there occur problems such as an extra space between the electrode plate group and the battery case and an inability to insert the electrode plate group. . Therefore, in the present example, the present comparative example, and the reference example 1, all of the battery case of the optimum size for inserting the electrode plate group provided with the 300 mm long positive electrode strap which is the maximum length, With respect to an electrode plate group having a length of less than 300 mm, spacers having different thicknesses were appropriately inserted on both sides of the electrode plate group so as not to generate an extra space. Here, in each of the above-described Examples, Comparative Examples, and Reference Example 1, the lead amounts of the grids of the positive electrode plate excluding the ear and the foot per battery capacity were almost the same.

(高温加速浮動充電試験及び容量試験)
実施例及び比較例において高温加速浮動充電試験及び容量試験を、下記の要領にて実施した。上記のようにして製造した鉛蓄電池を、温度60℃の恒温槽中に設置し、浮動充電電圧2.23V/セルにおいて高温加速浮動充電試験に供した。浮動充電試験を開始した後、25℃換算年数で1年(60℃では32日)経過後に、60℃の恒温槽から鉛蓄電池を取り出し、25℃の環境において容量試験を実施した。ここで、容量試験条件は放電電流0.1C10及び放電終止電圧1.8V/セルとした。この操作を繰り返し、鉛蓄電池が、その定格容量の80%を下回った時点を寿命とした。この試験においては、25℃換算年数20年に満たない期間において、定格容量の80%を下回った電池は全てストラップの破断が生じたことによるものであった。25℃換算年数20年に到達した時点で高温加速浮動充電試験及び容量試験を終了し、解体調査を実施して、正極ストラップ(16−1)の破断の有無調査を行った。
(High-temperature accelerated floating charge test and capacity test)
The high temperature accelerated floating charge test and the capacity test in the examples and comparative examples were performed as follows. The lead storage battery produced as described above was placed in a thermostatic chamber at a temperature of 60 ° C. and subjected to a high temperature accelerated floating charge test at a floating charge voltage of 2.23 V / cell. After the floating charge test was started, one year (32 days at 60 ° C.) in 25 ° C. conversion years, the lead storage battery was taken out from the 60 ° C. thermostatic bath, and the capacity test was carried out in an environment of 25 ° C. Here, the capacity test conditions were a discharge current of 0.1 C 10 and a discharge end voltage of 1.8 V / cell. This operation is repeated, and the point of time when the lead storage battery falls below 80% of its rated capacity is taken as the life. In this test, all batteries below 80% of the rated capacity during the period of less than 20 years at 25.degree. C. were due to the breakage of the strap. When reaching a temperature of 25 ° C. for 20 years, the high temperature accelerated floating charge test and the capacity test were finished, the disassembling investigation was conducted, and the presence or absence of breakage of the positive electrode strap (16-1) was investigated.

(実施例1〜15、比較例1〜22及び参考例1)
上記のようにして製造した夫々の鉛蓄電池について、上記の高温加速浮動充電試験及び容量試験を実施して、正極ストラップ(16−1)の破断の有無を調査した。結果を表1に示した。
(Examples 1 to 15, Comparative Examples 1 to 22, and Reference Example 1)
The above-mentioned high-temperature accelerated floating charge test and capacity test were conducted on each of the lead storage batteries produced as described above, and the presence or absence of breakage of the positive electrode strap (16-1) was examined. The results are shown in Table 1.

Figure 0006522832
Figure 0006522832

実施例1〜4は、正極極柱の座(15−1)と正極ストラップ(16−1)との接合部分の二つのエッジ部(20−1a,20−1a’)から、夫々のエッジ部の同側に存在する、上記正極ストラップの長さ方向の端部(16−1a,16−1a’)までの距離(a−1,a−1’)を0mmとしたものである。即ち、正極極柱の座(15−1)の幅を最大にしたものである。ここで、実施例1は、正極ストラップの幅(b−1)及び厚さ(c−1)をいずれも本発明の範囲で最少にしたものである。正極ストラップ(16−1)の破断は生じなかった。実施例2〜4は、実施例1に対して、正極ストラップの幅(b−1)及び厚さ(c−1)を本発明の範囲内で変化させたものである。いずれも正極ストラップ(16−1)の破断は認められず、かつ、コスト的にも見合うものであった。 In Examples 1 to 4, the two edge portions (20-1a, 20-1a ') of the bonding portion between the seat (15-1) of the positive electrode pole column and the positive electrode strap (16-1) are each edge portions The distance (a-1, a-1 ') to the end (16-1a, 16-1a') in the lengthwise direction of the positive electrode strap, which is present on the same side of the above, is 0 mm. That is, the width of the positive pole post (15-1) is maximized. Here, in Example 1, both the width (b-1) and the thickness (c-1) of the positive electrode strap are minimized within the scope of the present invention. There was no breakage of the positive electrode strap (16-1). In Examples 2 to 4, the width (b-1) and thickness (c-1) of the positive electrode strap are changed within the scope of the present invention with respect to Example 1. In either case, breakage of the positive electrode strap (16-1) was not observed, and the cost was also commensurate.

一方、比較例1〜8は、実施例1〜4と同様に、距離(a−1,a−1’)を0mmとしたものである。ここで、比較例1及び2は、いずれも、実施例2に対して、正極ストラップの幅(b−1)を本発明の範囲未満にしたものである。いずれの正極ストラップ(16−1)にも破断が生じた。このように、正極極柱の座(15−1)の幅及び正極ストラップの厚さ(c−1)を、本発明の範囲で最大にしても、正極ストラップの幅(b−1)を本発明の範囲未満、即ち、10mm未満にすると正極ストラップ(16−1)に破断が生じることが分かった。比較例3及び4は、夫々、実施例1及び2に対して、正極ストラップの厚さ(c−1)を、本発明の範囲未満及び本発明の範囲を超えるものとしたものである。正極ストラップの厚さ(c−1)を本発明の範囲未満、即ち、4mmにした比較例3では、正極ストラップ(16−1)に破断が生じた。その一方、正極ストラップの厚さ(c−1)を本発明の範囲を超えるものとした比較例4では、正極ストラップ(16−1)に破断が生じなかったが、厚さ(c−1)が過大となり、コスト的に見合うものとは言えなかった。比較例5及び6は、夫々、実施例3及び4に対して、正極ストラップの厚さ(c−1)を、本発明の範囲未満及び本発明の範囲を超えるものとしたものである。比較例5では、正極極柱の座(15−1)の幅及び正極ストラップの厚さ(b−1)を、本発明の範囲で最大にしたものではあるが、正極ストラップの厚さ(c−1)が本発明の範囲未満、即ち、4mmであっては正極ストラップ(16−1)に破断が生じることが分かった。また、比較例6では、正極ストラップ(16−1)の破断は生じなかったが、上記と同様にコスト的に見合うものでなかった。比較例7及び8は、正極ストラップの幅(b−1)を本発明の範囲を超えるものとし、かつ、正極ストラップの厚さ(c−1)を、夫々、本発明の範囲未満及び本発明の範囲を超えるものとしたものである。比較例7から明らかなように、正極極柱の座(15−1)の幅を最大にし、かつ、正極ストラップの幅(b−1)を本発明の範囲を超えるほど過大にしても、正極ストラップの厚さが本発明の範囲未満、即ち、4mmであっては正極ストラップ(16−1)に破断が生じた。比較例8では、正極ストラップ(16−1)の破断は生じなかったが、全くコスト的に見合うものでなかった。 On the other hand, Comparative Examples 1 to 8 set the distance (a-1, a-1 ') to 0 mm as in the Examples 1 to 4. Here, in each of Comparative Examples 1 and 2, the width (b-1) of the positive electrode strap is smaller than the range of the present invention with respect to Example 2. A fracture occurred in any of the positive electrode straps (16-1). Thus, even if the width (c-1) of the positive electrode pole seat (15-1) and the thickness (c-1) of the positive electrode strap are maximized within the scope of the present invention, the positive electrode strap width (b-1) Below the range of the invention, i.e., less than 10 mm, it was found that breakage occurs in the positive electrode strap (16-1). In Comparative Examples 3 and 4, the thickness (c-1) of the positive electrode strap is less than the scope of the present invention and beyond the scope of the present invention with respect to Examples 1 and 2, respectively. In Comparative Example 3 in which the thickness (c-1) of the positive electrode strap was less than the range of the present invention, that is, 4 mm, breakage occurred in the positive electrode strap (16-1). On the other hand, in Comparative Example 4 in which the thickness (c-1) of the positive electrode strap exceeded the range of the present invention, no breakage occurred in the positive electrode strap (16-1), but the thickness (c-1) Was too large to be cost effective. In Comparative Examples 5 and 6, the thickness (c-1) of the positive electrode strap is less than the scope of the present invention and beyond the scope of the present invention with respect to Examples 3 and 4, respectively. In Comparative Example 5, although the width (b-1) of the positive electrode pole seat (15-1) and the thickness (b-1) of the positive electrode strap are maximized within the scope of the present invention, the thickness of the positive electrode strap (c It was found that breakage occurs in the positive electrode strap (16-1) when -1) is less than the range of the present invention, that is, 4 mm. Moreover, in the comparative example 6, although the fracture | rupture of the positive electrode strap (16-1) did not arise, it was not what was matched with cost similarly to the above. In Comparative Examples 7 and 8, the width (b-1) of the positive electrode strap is beyond the scope of the present invention, and the thickness (c-1) of the positive electrode strap is less than the scope of the present invention and the present invention, respectively. Is beyond the scope of As apparent from Comparative Example 7, even if the width of the positive electrode pole seat (15-1) is maximized and the width of the positive electrode strap (b-1) is too large to exceed the scope of the present invention, Breakage occurred in the positive electrode strap (16-1) when the thickness of the strap was less than the range of the present invention, that is, 4 mm. In Comparative Example 8, breakage of the positive electrode strap (16-1) did not occur, but it was not at all cost-effective.

実施例5〜8は、距離(a−1,a−1’)を20mmとした以外は、夫々、実施例1〜4と同一の正極ストラップの幅(b−1)及び厚さ(c−1)を有するものである。即ち、正極極柱の座(15−1)の幅を、本発明の範囲内で最小にしたものである。いずれも正極ストラップ(16−1)の破断は認められず、かつ、コスト的にもより一層見合うものであった。また、実施例1〜4と比較して、よりコスト的に良好であった。 Examples 5 to 8 have the same width (b-1) and thickness (c−) of the positive electrode strap as in Examples 1 to 4 except that the distance (a−1, a−1 ′) is 20 mm. 1). That is, the width of the positive pole post (15-1) is minimized within the scope of the present invention. In either case, breakage of the positive electrode strap (16-1) was not observed, and the cost was further commensurately better. Moreover, compared with Examples 1-4, it was more favorable in cost.

一方、比較例9〜16は、実施例5〜8と同様に、距離(a−1,a−1’)を20mmとしたものである。ここで、比較例9及び10は、いずれも、実施例6に対して、正極ストラップの幅(b−1)を本発明の範囲未満にしたものである。いずれの正極ストラップ(16−1)にも破断が生じた。比較例11及び12は、夫々、実施例5及び6に対して、正極ストラップの厚さ(c−1)を、本発明の範囲未満及び本発明の範囲を超えるものとしたものである。正極ストラップの厚さ(c−1)を本発明の範囲未満、即ち、4mmにした比較例11では、正極ストラップ(16−1)に破断が生じた。その一方、正極ストラップの厚さ(c−1)を本発明の範囲を超えるものとした比較例12では、正極ストラップ(16−1)に破断が生じなかったが、コスト的に見合うものとは言えなかった。比較例13及び14は、夫々、実施例7及び8に対して、正極ストラップの厚さ(c−1)を、本発明の範囲未満及び本発明の範囲を超えるものとしたものである。比較例13では、正極ストラップ(16−1)に破断が生じた。一方、比較例14では、正極ストラップ(16−1)の破断は生じなかったが、コスト的に見合うものでなかった。比較例15及び16は、正極ストラップの幅(b−1)を本発明の範囲を超えるものとし、かつ、正極ストラップの厚さ(c−1)を、夫々、本発明の範囲未満及び本発明の範囲を超えるものとしたものである。比較例15から分かるように、正極ストラップの幅(b−1)を本発明の範囲を超えるものとしても、正極ストラップの厚さ(c−1)を本発明の範囲未満にすると、正極ストラップ(16−1)に破断が生じた。比較例16では、正極ストラップ(16−1)の破断は生じなかったが、全くコスト的に見合うものでなかった。また、比較例17及び18は、距離(a−1,a−1’)を本発明の範囲を超えるものにしたものである。比較例17から明らかなように、距離(a−1,a−1’)が本発明の範囲を僅かにでも超えると、正極ストラップ(16−1)に破断が生じた。また、比較例18のように、正極ストラップの幅(b−1)及び厚さ(c−1)を本発明の範囲を超えて相当大きくしても、距離(a−1,a−1’)が本発明の範囲を超えると、ストラップ(16−1)に破断が生じた。 On the other hand, Comparative Examples 9 to 16 have a distance (a-1, a-1 ') of 20 mm as in Examples 5 to 8. Here, in each of Comparative Examples 9 and 10, the width (b-1) of the positive electrode strap is smaller than the range of the present invention with respect to Example 6. A fracture occurred in any of the positive electrode straps (16-1). In Comparative Examples 11 and 12, the thickness (c-1) of the positive electrode strap is less than the scope of the present invention and beyond the scope of the present invention, as compared with Examples 5 and 6, respectively. In Comparative Example 11 in which the thickness (c-1) of the positive electrode strap was less than the range of the present invention, that is, 4 mm, breakage occurred in the positive electrode strap (16-1). On the other hand, in Comparative Example 12 in which the thickness (c-1) of the positive electrode strap was beyond the range of the present invention, no breakage occurred in the positive electrode strap (16-1), but I could not say. In Comparative Examples 13 and 14, the thickness (c-1) of the positive electrode strap is less than the scope of the present invention and beyond the scope of the present invention with respect to Examples 7 and 8, respectively. In Comparative Example 13, breakage occurred in the positive electrode strap (16-1). On the other hand, in Comparative Example 14, although breakage of the positive electrode strap (16-1) did not occur, it was not suitable in terms of cost. In Comparative Examples 15 and 16, the width (b-1) of the positive electrode strap is beyond the scope of the present invention, and the thickness (c-1) of the positive electrode strap is less than the scope of the present invention and the present invention, respectively. Is beyond the scope of As can be seen from Comparative Example 15, when the thickness (c-1) of the positive electrode strap is less than the range of the present invention, even if the width (b-1) of the positive electrode strap exceeds the range of the present invention The fracture occurred at 16-1). In Comparative Example 16, breakage of the positive electrode strap (16-1) did not occur, but it was not at all cost-effective. Moreover, Comparative Examples 17 and 18 have the distances (a-1, a-1 ') beyond the scope of the present invention. As apparent from Comparative Example 17, when the distance (a-1, a-1 ') slightly exceeds the range of the present invention, the positive electrode strap (16-1) is broken. Further, as in Comparative Example 18, even when the width (b-1) and the thickness (c-1) of the positive electrode strap are considerably increased beyond the scope of the present invention, the distance (a-1, a-1 ' When it exceeds the scope of the present invention, a break occurred in the strap (16-1).

実施例9は、実施例1において、即ち、距離(a−1,a−1’)が0mm、正極ストラップの幅(b−1)が10mm及び正極ストラップの厚さ(c−1)が5mmである場合に、正極板の高さ(d−1)を180mmとしたものである。また、実施例10は、実施例5において、即ち、距離(a−1,a−1’)が20mm、正極ストラップの幅(b−1)が10mm及び正極ストラップの厚さ(c−1)が5mmである場合に、正極板の高さ(d−1)を180mmとしたものである。いずれも、正極ストラップ(16−1)の破断は生じなかった。一方、比較例19及び20は、実施例9と同じく、距離(a−1,a−1’)が0mmである場合に、正極板の高さ(d−1)を180mmとしたものであって、正極ストラップの幅(b−1)及び厚さ(c−1)を本発明の範囲外にしたものである。また、比較例21及び22は、実施例10と同じく、距離(a−1,a−1’)が20mmである場合に、正極板の高さ(d−1)を180mmとしたものであって、正極ストラップの幅(b−1)及び厚さ(c−1)を本発明の範囲外にしたものである。比較例19〜22のいずれにおいても、正極ストラップ(16−1)に破断が見られた。以上のことから、正極板の高さ(d−1)が180mmの場合においても、正極板の高さ(d−1)が400mmの場合と同様に、距離(a−1,a−1’)、正極ストラップの幅(b−1)及び厚さ(c−1)を、本発明の範囲にすることにより、正極ストラップ(16−1)の破断を防止し得ることが分かった。なお、参考例1は、正極板の高さ(d−1)を150mmとした以外は、比較例1及び20と同一の条件で正極ストラップ(16−1)の破断の有無を調査したものである。比較例1及び20、即ち、正極板の高さ(d−1)が夫々400mm及び180mmの場合においては、正極ストラップ(16−1)の破断が認められたが、正極板の高さ(d−1)を150mmとした参考例1では、正極ストラップ(16−1)の破断は認められなかった。これは、正極板の高さ(d−1)が小さいことから極板自体の腐食による伸びが小さく、従って、そもそも、正極ストラップ(16−1)の破断が生ずるような応力が発生していないためと考えられる。また、比較例4、6、8、12、14、16及び18においては、正極ストラップの厚さ(c−1)は、いずれも18mmである。このように、正極ストラップの厚さ(c−1)が15mmを超えると、正極極柱の座の厚みとの差があまりに大きいため、正極ストラップ(16−1)の形成の際に、足し鉛の溶解と溶解した足し鉛の流し込みの繰り返し作業が増加することからコストアップにつながり好ましくない。 Example 9 is the same as Example 1, that is, the distance (a-1, a-1 ′) is 0 mm, the width of the positive electrode strap (b-1) is 10 mm, and the thickness of the positive electrode strap (c-1) is 5 mm In this case, the height (d-1) of the positive electrode plate is 180 mm. In Example 10, in Example 5, the distance (a-1, a-1 ′) is 20 mm, the width of the positive electrode strap (b-1) is 10 mm, and the thickness of the positive electrode strap (c-1) Is 5 mm, the height (d-1) of the positive electrode plate is 180 mm. In any case, breakage of the positive electrode strap (16-1) did not occur. On the other hand, in Comparative Examples 19 and 20, as in Example 9, when the distance (a-1, a-1 ') is 0 mm, the height (d-1) of the positive electrode plate is 180 mm. The width (b-1) and the thickness (c-1) of the positive electrode strap are outside the scope of the present invention. Further, in Comparative Examples 21 and 22, as in Example 10, when the distance (a-1, a-1 ') is 20 mm, the height (d-1) of the positive electrode plate is 180 mm. The width (b-1) and the thickness (c-1) of the positive electrode strap are outside the scope of the present invention. In any of Comparative Examples 19 to 22, breakage of the positive electrode strap (16-1) was observed. From the above, even when the height (d-1) of the positive electrode plate is 180 mm, the distance (a-1, a-1 ') is the same as in the case where the height (d-1) of the positive electrode plate is 400 mm. It has been found that the breakage of the positive electrode strap (16-1) can be prevented by setting the width (b-1) and the thickness (c-1) of the positive electrode strap within the range of the present invention. In Reference Example 1, the presence or absence of breakage of the positive electrode strap (16-1) was investigated under the same conditions as Comparative Examples 1 and 20 except that the height (d-1) of the positive electrode plate was 150 mm. is there. In Comparative Examples 1 and 20, in the case where the height (d-1) of the positive electrode plate is 400 mm and 180 mm, respectively, breakage of the positive electrode strap (16-1) was observed, but the height (d) of the positive electrode plate In Reference Example 1 in which -1) was 150 mm, breakage of the positive electrode strap (16-1) was not observed. This is because the height (d-1) of the positive electrode plate is small, so the elongation due to corrosion of the electrode plate itself is small, and therefore, no stress is generated to cause breakage of the positive electrode strap (16-1) in the first place It is thought that it is for. Moreover, in Comparative Examples 4, 6, 8, 12, 14, 16 and 18, the thickness (c-1) of the positive electrode strap is 18 mm in all cases. As described above, when the thickness (c-1) of the positive electrode strap exceeds 15 mm, the difference between the thickness of the positive electrode pole seat and the thickness of the positive electrode pole seat is too large. Therefore, lead is added when forming the positive electrode strap (16-1). This is not preferable because it leads to an increase in cost due to an increase in repetitive operations of melting and pouring of added lead.

実施例11〜14は、いずれも、正極ストラップの長さ(L−1)を変えたものである。いずれの場合にも、正極ストラップ(16−1)の破断は認められなかった。また、実施例15は、正極極柱の座(15−1)と正極極柱(4−1)との接合部分の長さ(e−1)が、正極極柱(4−1)の長手方向に垂直な断面における該極柱(4−1)の断面の周の長さの30%であるものである。同様に、正極ストラップ(16−1)の破断は認められなかった。 In each of Examples 11 to 14, the length (L-1) of the positive electrode strap is changed. In any case, no breakage of the positive electrode strap (16-1) was observed. In Example 15, the length (e-1) of the joint between the positive electrode pole seat (15-1) and the positive electrode pole column (4-1) is the length of the positive electrode pole column (4-1). It is 30% of the perimeter of the cross section of the pole post (4-1) in the cross section perpendicular to the direction. Similarly, no breakage of the positive electrode strap (16-1) was observed.

本発明の鉛蓄電池は、中容量以上でありながら比較的小さな電流しか流さない鉛蓄電池であって、かつ、長期間に亘って、ストラップの破断を効果的に防止し得るばかりではなく、製造コスト等が比較的低いことから、長寿命を要求される産業用鉛蓄電池として、今後、大いに利用されることが期待される。 The lead-acid battery of the present invention is a lead-acid battery having a medium current or more but passing only a relatively small current, and can not only effectively prevent breakage of the strap over a long period of time, but also has a manufacturing cost. It is expected that it will be widely used in the future as an industrial lead-acid battery that requires a long life because the etc. is relatively low.

A 鉛蓄電池
1 電槽
1−1 電槽の開口部の周縁部
2 蓋
3 排気栓
4 極柱
4−1 正極極柱
4−2 負極極柱
5 端子封口部
10 極板群
10−1 正極板群
10−2 負極板群
11 極板
11−1 正極板
11−2 負極板
12 耳部
12−1 正極耳部
12−2 負極耳部
13 極板集電部
13−1 正極板集電部
13−2 負極板集電部
15 極柱の座
15−1 正極側の極柱の座
15−2 負極側の極柱の座
16 ストラップ
16−1 正極ストラップ
16−2 負極ストラップ
17 足部
16a,16a’ ストラップの長さ方向の両端部
16a−1,16a−1’ 正極ストラップの長さ方向の両端部
16a−2,16a−2’ 負極ストラップの長さ方向の両端部
20a,20a’ 極柱の座とストラップとの接合部分の二つのエッジ部
20−1a,20−1a’ 正極極柱の座と正極ストラップとの接合部分の二つのエッジ部
20−2a,20−2a’ 負極極柱の座と負極ストラップとの接合部分の二つのエッジ部
a,a’ 極柱の座とストラップとの接合部分の二つのエッジ部から、夫々のエッジ部の同側に存在する、ストラップの長さ方向の端部までの距離
a−1,a−1’ 正極極柱の座と正極ストラップとの接合部分の二つのエッジ部から、夫々のエッジ部の同側に存在する、正極ストラップの長さ方向の端部までの距離
a−2,a−2’ 負極極柱の座と負極ストラップとの接合部分の二つのエッジ部から、夫々のエッジ部の同側に存在する、負極ストラップの長さ方向の端部までの距離
b ストラップの幅
b−1 正極ストラップの幅
b−2 負極ストラップの幅
c ストラップの厚さ
c−1 正極ストラップの厚さ
c−2 負極ストラップの厚さ
d 極板の高さ
d−1 正極板の高さ
d−2 負極板の高さ
e 極柱の座と極柱との接合部分の長さ
e−1 正極極柱の座と正極極柱との接合部分の長さ
e−2 負極極柱の座と負極極柱との接合部分の長さ
L ストラップの長さ
L−1 正極ストラップの長さ
L−2 負極ストラップの長さ
A Lead-acid battery 1 Battery case 1-1 Peripheral part of opening of battery case 2 Cover 3 Exhaust plug 4 Pole post 4-1 Positive pole post 4-2 Negative pole post 5 Terminal seal part 10 Electrode plate group 10-1 Positive pole plate Group 10-2 Negative electrode plate group 11 Electrode plate 11-1 Positive electrode plate 11-2 Negative electrode plate 12 Ear 12-1 Positive electrode ear 12-2 Negative electrode ear 13 Electrode plate current collector 13-1 Positive electrode plate current collector 13 2-2 Negative electrode plate current collecting portion 15 Positive pole seat 15-1 Positive pole side seat 15-2 Negative pole side pole pole 16 Strap 16-1 Positive electrode strap 16-2 Negative electrode strap 17 Foot 16a, 16a 'Both ends 16a-1 and 16a-1' in the lengthwise direction of the straps Both ends 16a-2 and 16a-2 'in the lengthwise direction of the positive electrode straps Both ends 20a and 20a' in the lengthwise direction of the negative electrode straps Two edge parts 20-1a, 20-1a 'at the junction of the seat and the strap Two edge portions 20-2a, 20-2a 'at the junction between the seat and the positive electrode strap Two edges a, a' at the junction between the negative pole seat and the negative electrode strap Distance from the two edges of the joint to the end of the strap in the same direction on the same side of each edge a-1, a-1 'Positive pole pole seat and positive strap Distance from the two edges of the part to the end of the positive electrode strap in the same direction on the same side of each edge a-2, a-2 'junction of negative electrode pole seat with negative electrode pole seat The distance b from the two edges of the part to the end of the negative strap on the same side of each edge b Width of the strap b-1 Width of the positive strap b-2 Width of the negative strap c Strap thickness c-1 Positive strap thickness -2-Thickness of negative electrode strap d Height of electrode plate d-Height of positive electrode plate d-Height of negative electrode plate e Length of joint part of pole column with pole column e-1 Positive pole column Length e-2 of the junction between the seat and the positive pole pole length L of the junction between the negative pole post and the seat of the negative pole pole length L strap length L-1 positive pole strap length L-2 negative pole strap Length of

Claims (3)

正極板と負極板とを隔離板を介して交互に積層した極板群、上記極板群の同極性同士の極板の耳部を連結したストラップ、及び、上記ストラップと極柱とを接続した極柱の座、を備える鉛蓄電池において、正極側の極柱の座と正極ストラップとの接合部分の二つのエッジ部から、夫々のエッジ部の同側に存在する、上記正極ストラップの長さ方向の端部までの距離(a−1,a−1’)が、0〜20mmであり、上記正極ストラップの幅(b−1)が、10〜25mmであり、かつ、上記正極ストラップの厚さ(c−1)が、5〜15mmであり、加えて、耳部と足部とを除く正極板の高さ(d−1)が180mm以上であることを特徴とする鉛蓄電池。 An electrode plate group in which a positive electrode plate and a negative electrode plate are alternately stacked via a separator, a strap in which the ear parts of the electrode plates of the same polarity of the electrode plate group are connected, and the strap and electrode pole are connected In a lead-acid battery comprising a pole post, the length direction of the positive strap from the two edges of the junction between the positive pole seat and the positive strap on the same side of each edge. The distance (a-1, a-1 ') to the end of the electrode is 0 to 20 mm, the width (b-1) of the positive electrode strap is 10 to 25 mm, and the thickness of the positive electrode strap (C-1) is 5 to 15 mm, and additionally, the height (d-1) of the positive electrode plate excluding the ear portion and the foot portion is 180 mm or more. 上記の正極側の極柱の座と正極極柱との接合部分の長さ(e−1)が、該正極極柱の長手方向に垂直な断面において、該正極極柱の断面の周の長さの30〜60%である、請求項1記載の鉛蓄電池。 In the cross section perpendicular to the longitudinal direction of the positive electrode pole, the length (e-1) of the junction between the seat of the positive pole and the positive pole side of the positive pole side is the circumferential length of the cross section of the positive pole The lead-acid battery according to claim 1, which is 30 to 60% of the 定格容量が100Ah〜2,000Ahであり、運用時の最大電流が、0.6C10アンペア(A)以下である、請求項1又は2記載の鉛蓄電池。 The lead acid battery according to claim 1 or 2 , wherein the rated capacity is 100 Ah to 2,000 Ah, and the maximum current at the time of operation is 0.6 C 10 amps (A) or less.
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