WO2017145893A1 - Lead storage cell - Google Patents

Lead storage cell Download PDF

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Publication number
WO2017145893A1
WO2017145893A1 PCT/JP2017/005535 JP2017005535W WO2017145893A1 WO 2017145893 A1 WO2017145893 A1 WO 2017145893A1 JP 2017005535 W JP2017005535 W JP 2017005535W WO 2017145893 A1 WO2017145893 A1 WO 2017145893A1
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Prior art keywords
positive electrode
electrode plate
ear
positive
plates
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PCT/JP2017/005535
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French (fr)
Japanese (ja)
Inventor
克実 伊藤
圭 石牧
亮太 菊地
藤森 智貴
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株式会社Gsユアサ
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Priority to JP2018501615A priority Critical patent/JP6935795B2/en
Publication of WO2017145893A1 publication Critical patent/WO2017145893A1/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
    • H01M50/533Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present invention relates to a lead storage battery.
  • a positive electrode plate and a negative electrode plate are laminated via a separator to produce an electrode plate group, and then the ears of the positive electrode plate are integrated into one electrode plate group and integrated with a positive polarity strap.
  • the ears of the negative electrode plate are integrated into one electrode plate group and integrated with the negative strap.
  • positive polarity is achieved by a method in which a lead alloy piece is brought into contact with the ear portion and then heated by a burner, a method in which the ear portion is immersed in a molten lead alloy and then cooled and solidified.
  • the strap and the negative strap are molded and integrated with the ear portion.
  • the positive electrode plate expands in volume with repeated charging and discharging. This expansion is particularly noticeable in an overcharged state. This expansion may apply a load to the ear part of the positive electrode plate to cause distortion, and the lead part battery may be vibrated to break the ear part.
  • Patent Document 1 discloses a configuration in which a taper-like or R-shaped build-up part is formed at the boundary part between the ear part and the strap to improve the mechanical strength.
  • Patent Document 2 discloses a configuration in which a rib portion is provided at an ear portion to improve mechanical strength.
  • the purpose is to prevent breakage of the ear of the positive electrode plate of the lead-acid battery.
  • one aspect of the present invention includes at least one electrode plate group including a plurality of positive electrode plates and negative electrode plates,
  • the plurality of positive plates of the electrode group each include a grid, ears, and a positive electrode active material, and the ears of the plurality of positive plates are welded to a strap,
  • the ears of the positive plates of 50% or more are inclined with respect to the vertical direction,
  • At least one of the inclined ear portions relates to a lead-acid battery that is inclined in a direction opposite to the other inclined ear portions.
  • FIG. 2 is a schematic view of a main part for explaining an inclined state of the ears of a plurality of positive electrode plates in the electrode plate group of FIG. 1.
  • the lead storage battery includes at least one electrode plate group including a plurality of positive electrode plates and negative electrode plates.
  • Each of the plurality of positive electrode plates of the electrode plate group includes a lattice body, an ear portion, and a positive electrode active material, and the ear portions of the plurality of positive electrode plates are welded to the strap.
  • the ear portions of the positive electrode plate of 50% or more of the plurality of positive electrode plates are inclined with respect to the vertical direction, and at least one of the inclined ear portions is Inclined in the opposite direction to the other inclined ears.
  • the ears are inclined in the number of positive electrode plates of 50% or more. At this time, at least one of the inclined ears is replaced with another inclined ear. And tilt in the opposite direction.
  • FIG. 1 is a schematic perspective view in which a part of a lead storage battery according to an embodiment of the present invention is cut away.
  • FIG. 2a is a schematic front view showing an example of the positive electrode plate of FIG. 2b is a cross-sectional view taken along line IIb-IIb in FIG. 2a.
  • FIG. 3 is a schematic diagram of a main part for explaining the inclined state of the ears of a plurality of positive plates in the electrode plate group of FIG. FIG.
  • FIG 3 is a cross-sectional view in the thickness direction of the ear portion, and the ear portion is indicated by a solid line, and a portion other than the ear portion of the positive electrode plate (main part near the ear portion) is indicated by a dotted line.
  • the lead storage battery includes a plurality of electrode plate groups 4.
  • the electrode plate group 4 is accommodated in each cell chamber 5a of the battery case 5 having a plurality of cell chambers 5a together with an electrolytic solution (not shown).
  • the opening of the battery case 5 is sealed with a lid 6.
  • the positive electrode plate 1 and the negative electrode plate 2 are laminated via the separator 3.
  • Each positive electrode plate 1 has an ear 1c for collecting current, and each negative electrode plate 2 also has an ear.
  • the ears 1 c of the positive electrode plate 1 are integrated with the positive electrode strap 7 for each electrode plate group 4.
  • the ears of the negative electrode plate are integrated into one negative electrode group 4 and integrated with the negative polarity strap 8.
  • edge part was shown with the arrow.
  • the positive electrode plate 1 includes a positive electrode lattice 1a, a positive electrode active material 1b, an ear 1c, and an upper bone 1d.
  • the lattice body is composed of a positive electrode lattice 1a and an upper bone portion 1d. 4 to 15 positive plates are used per cell (that is, per cell chamber).
  • the ear portions of the positive electrode plates of 50% or more are inclined, and some inclined ear portions and other inclined ear portions are The inclination direction is reverse.
  • at least one electrode plate group may be configured so that the inclined directions of some inclined ear portions and other inclined ear portions are opposite to each other.
  • the inclined direction may be reversed between some inclined ear portions and other inclined ear portions.
  • One electrode plate group may include a positive electrode plate whose ears are upright in the vertical direction, but the number is preferably smaller.
  • the inclined positive electrode plate is preferably 70% or more, more preferably 90% or more, of the total number of positive electrode plates included in the electrode plate group. From the viewpoint of further enhancing the effect of suppressing breakage of the ears of the positive electrode plate, at least one electrode plate group, the ears of all the positive plates are inclined, and some ears and other ears It is preferable that the inclination direction is reverse. From the same viewpoint, among the plurality of electrode plate groups included in the lead storage battery, in each of the electrode plate groups of 50% or more (preferably 80% or more or 90% or more), the ears of all the positive electrode plates are respectively It is inclined and it is preferable that some ear
  • the ear portion 1c of each positive electrode plate of the lead storage battery of the invention according to the present embodiment is inclined with respect to the vertical direction in a sectional view in the thickness direction. And at least one ear is inclined in the opposite direction to the other ear.
  • the inclination of the ear means that the ear is inclined more than 0 degrees in absolute value with respect to the vertical direction in a cross-sectional view in the thickness direction. It is preferable to incline at least 1 degree or at least 1 degree, and may incline at least 3 degrees or at least 5 degrees.
  • the inclination of the ear portion is an absolute value, for example, preferably 10 degrees or less, and more preferably 7 degrees or less. These lower limit values and upper limit values can be arbitrarily combined.
  • the absolute value of the inclination of the ear may be, for example, 0.1 to 10 degrees, 0.1 to 7 degrees, 1 to 7 degrees, 3 to 7 degrees, or 5 to 7 degrees.
  • the ear 1c has inclination angles of +3 degrees, +3 degrees, +3 degrees, +3 degrees, and -3 degrees in order from the left.
  • the ear 1c has inclination angles of ⁇ 5 degrees, +3 degrees, +3 degrees, +2 degrees, and +3 degrees in order from the left.
  • the ear 1c has inclination angles of ⁇ 2 degrees, +3 degrees, +2 degrees, ⁇ 2 degrees, and +2 degrees in order from the left.
  • the ear 1c has inclination angles of +2 degrees, -2 degrees, +3 degrees, +4 degrees, and -3 degrees in order from the left.
  • the ear 1c has inclination angles of +3 degrees, +2 degrees, +4 degrees, -3 degrees, and -3 degrees in order from the left.
  • the position and number of positive electrode plates having ears inclined in one direction are not particularly limited.
  • the absolute value of the inclination angle may be the same for all or some of the ears of the positive electrode plate in the electrode plate group, or may be different for the ears of all the positive electrode plates.
  • the ears at both ends of the electrode plate group are preferably inclined toward each other, that is, inward. If comprised in this way, a positive polarity strap can be reduced in size and weight.
  • the ear part of the positive electrode plate or the part of the ear part integrated with the lattice is inserted into a comb-shaped jig having a predetermined inclination angle, and along the inclination angle of the comb-shaped jig. And bending (that is, correcting the inclination angle of the ear).
  • Examples of the material constituting the positive electrode lattice include lead and lead alloys.
  • the positive electrode only needs to include a lattice body, an ear portion, and a positive electrode active material, and may include a lattice body, an ear portion, and a positive electrode material containing the positive electrode active material.
  • the ear is integrated with the upper part of the lattice.
  • lead or a lead alloy can be used as in the lattice.
  • the positive grid may be formed by casting lead or a lead alloy, or may be formed by processing a lead or lead alloy sheet. Examples of the processing method include an expanding process and a punching process.
  • the positive electrode material may include known components and additives used for the positive electrode plate of the lead storage battery in addition to the positive electrode active material.
  • the positive electrode active material is a material that develops capacity by an oxidation-reduction reaction, and includes, for example, lead dioxide or lead sulfate.
  • the positive electrode active material (or positive electrode material) is usually carried on a positive electrode grid.
  • the positive electrode plate is a lattice body in which the ears are integrated, the ears are inclined, the positive electrode active material or the positive electrode material is supported on the positive electrode lattice of the lattice body, aged and dried, and usually further chemical conversion treatment is performed. Can be obtained. Either the loading of the positive electrode active material or the bending of the ear may be performed first.
  • the material of the strap integrated with the ears of the plurality of positive electrode plates for example, lead or lead alloy is used in the same manner as the lattice body.
  • a separator is usually disposed between the negative electrode plate and the positive electrode plate.
  • the lead-acid battery of the present invention is industrially useful because it has excellent reliability because the breakage of the ears of the positive electrode plate is suppressed.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)

Abstract

The present invention prevents fracturing of a tab part of the positive plate of a lead storage cell. The lead storage cell of the present invention includes at least one plate group provided with a plurality of positive plates and negative plates. The plurality of positive plates of the plate group respectively include a lattice body, a tab part, and a positive-electrode active material. The tab parts of the plurality of positive plates are welded to a strap. In a cross-sectional view of the tab part thickness direction, among the plurality of positive plates, the tab parts of 50% or more of the plurality of positive plates are inclined in the vertical direction, and at least one of the inclined tab parts is inclined in the opposite direction to the other inclined tab parts.

Description

鉛蓄電池Lead acid battery
 本発明は、鉛蓄電池に関する。 The present invention relates to a lead storage battery.
 鉛蓄電池を作製する過程で、正極板と負極板とをセパレータを介して積層して極板群を作製した後、正極板の耳部を1つの極板群ごとにまとめて正極性ストラップと一体化し、かつ負極板の耳部を1つの極板群ごとにまとめて負極性ストラップと一体化する。具体的には、耳部に鉛合金片を当接させた後でバーナーにて加熱する方法や、溶湯にした鉛合金に耳部を漬けた後で冷却して固化させる方法などによって、正極性ストラップおよび負極性ストラップを成形しつつ耳部と一体化する。 In the process of producing a lead-acid battery, a positive electrode plate and a negative electrode plate are laminated via a separator to produce an electrode plate group, and then the ears of the positive electrode plate are integrated into one electrode plate group and integrated with a positive polarity strap. In addition, the ears of the negative electrode plate are integrated into one electrode plate group and integrated with the negative strap. Specifically, positive polarity is achieved by a method in which a lead alloy piece is brought into contact with the ear portion and then heated by a burner, a method in which the ear portion is immersed in a molten lead alloy and then cooled and solidified. The strap and the negative strap are molded and integrated with the ear portion.
 鉛蓄電池は充放電の繰り返しに伴って正極板が体積膨張する。この膨張は、特に過充電状態において顕著である。この膨張が正極板の耳部に負荷を与えて歪を生じさせ、鉛蓄電池が振動を受けることで耳部が破断することがある。 In the lead storage battery, the positive electrode plate expands in volume with repeated charging and discharging. This expansion is particularly noticeable in an overcharged state. This expansion may apply a load to the ear part of the positive electrode plate to cause distortion, and the lead part battery may be vibrated to break the ear part.
 この耳部の破断を防ぐために、特許文献1には、耳部とストラップの境界部分に、テーパ状やR状の肉盛り部を形成させて機械的強度を向上させる構成が開示されている。 In order to prevent breakage of the ear part, Patent Document 1 discloses a configuration in which a taper-like or R-shaped build-up part is formed at the boundary part between the ear part and the strap to improve the mechanical strength.
 特許文献2には、耳部にリブ部を設けて機械的強度を向上させる構成が開示されている。 Patent Document 2 discloses a configuration in which a rib portion is provided at an ear portion to improve mechanical strength.
特開平1-89259号公報JP-A-1-89259 特開平7-326359号公報JP 7-326359 A
 鉛蓄電池の正極板の耳部の破断を防止することを目的とする。 The purpose is to prevent breakage of the ear of the positive electrode plate of the lead-acid battery.
 上記目的を達成するために本発明の一側面は、複数の正極板と負極板とを備える極板群を少なくとも1つ含み、
 前記極板群の前記複数の正極板は、それぞれ、格子体と、耳部と、正極活物質と、を含み、前記複数の正極板の前記耳部は、ストラップに溶接されており、
 前記耳部の厚さ方向の断面視において、
 前記複数の正極板のうち50%以上の枚数の前記正極板の前記耳部は、鉛直方向に対して傾斜しており、
 傾斜した前記耳部のうち少なくとも1つは、他の傾斜した前記耳部と逆方向に傾斜している、鉛蓄電池に関する。
In order to achieve the above object, one aspect of the present invention includes at least one electrode plate group including a plurality of positive electrode plates and negative electrode plates,
The plurality of positive plates of the electrode group each include a grid, ears, and a positive electrode active material, and the ears of the plurality of positive plates are welded to a strap,
In a cross-sectional view in the thickness direction of the ear,
Of the plurality of positive plates, the ears of the positive plates of 50% or more are inclined with respect to the vertical direction,
At least one of the inclined ear portions relates to a lead-acid battery that is inclined in a direction opposite to the other inclined ear portions.
 本発明によれば、鉛蓄電池の正極板の耳部の破断を防止することができる。 According to the present invention, it is possible to prevent breakage of the ear portion of the positive electrode plate of the lead storage battery.
 本発明の新規な特徴を添付の請求の範囲に記述するが、本発明は、構成および内容の両方に関し、本発明の他の目的および特徴と併せ、図面を照合した以下の詳細な説明によりさらによく理解されるであろう。 While the novel features of the invention are set forth in the appended claims, the invention will be further described by reference to the following detailed description, taken in conjunction with the other objects and features of the invention, both in terms of construction and content. It will be well understood.
本発明の一実施形態に係る鉛蓄電池の一部を切り欠いた概略斜視図である。It is the schematic perspective view which notched some lead acid batteries concerning one embodiment of the present invention. 図1の正極板の一例を示す概略正面図である。It is a schematic front view which shows an example of the positive electrode plate of FIG. 図2aのIIb-IIb線による矢示断面図である。FIG. 2b is a cross-sectional view taken along line IIb-IIb in FIG. 2a. 図1の極板群において、複数の正極板の耳部の傾斜状態を説明するための要部の模式図である。FIG. 2 is a schematic view of a main part for explaining an inclined state of the ears of a plurality of positive electrode plates in the electrode plate group of FIG. 1.
 本発明の一実施形態に係る鉛蓄電池は、複数の正極板と負極板とを備える極板群を少なくとも1つ含む。極板群の複数の正極板は、それぞれ、格子体と、耳部と、正極活物質と、を含み、複数の正極板の耳部は、ストラップに溶接されている。耳部の厚さ方向の断面視において、複数の正極板のうち50%以上の枚数の正極板の耳部は、鉛直方向に対して傾斜しており、傾斜した耳部のうち少なくとも1つは、他の傾斜した耳部と逆方向に傾斜している。 The lead storage battery according to an embodiment of the present invention includes at least one electrode plate group including a plurality of positive electrode plates and negative electrode plates. Each of the plurality of positive electrode plates of the electrode plate group includes a lattice body, an ear portion, and a positive electrode active material, and the ear portions of the plurality of positive electrode plates are welded to the strap. In the cross-sectional view of the ear portion in the thickness direction, the ear portions of the positive electrode plate of 50% or more of the plurality of positive electrode plates are inclined with respect to the vertical direction, and at least one of the inclined ear portions is Inclined in the opposite direction to the other inclined ears.
 本実施形態では、複数の正極板を備える極板群において、50%以上の枚数の正極板において耳部を傾斜させるが、このとき傾斜した耳部の少なくとも1つを、他の傾斜した耳部と逆方向に傾斜させる。これにより、充電時(特に、過充電時)に正極板が膨張しても、膨張による応力歪みが生じ難い。また、鉛蓄電池が振動しても、振動による応力を分散させることができる。よって、正極板の耳部の破断を抑制することができる。 In the present embodiment, in the electrode plate group including a plurality of positive electrodes, the ears are inclined in the number of positive electrode plates of 50% or more. At this time, at least one of the inclined ears is replaced with another inclined ear. And tilt in the opposite direction. Thereby, even if the positive electrode plate expands during charging (particularly during overcharging), stress distortion due to expansion hardly occurs. Moreover, even if a lead storage battery vibrates, the stress by vibration can be disperse | distributed. Therefore, breakage of the ear portion of the positive electrode plate can be suppressed.
 以下に本実施形態について、図1~図3を用いてより具体的に説明するが、これらの図は単なる例示であり、本発明は、これらの図の場合に限定されるものではない。
 図1は、本発明の一実施形態に係る鉛蓄電池の一部を切り欠いた概略斜視図である。図2aは、図1の正極板の一例を示す概略正面図である。図2bは、図2aのIIb-IIb線による矢示断面図である。図3は、図1の極板群において、複数の正極板の耳部の傾斜状態を説明するための要部の模式図である。図3は、耳部の厚さ方向の断面視で、耳部を実線、正極板の耳部以外の部分(耳部近傍の要部)を点線で示している。
Hereinafter, the present embodiment will be described more specifically with reference to FIGS. 1 to 3. However, these drawings are merely examples, and the present invention is not limited to these drawings.
FIG. 1 is a schematic perspective view in which a part of a lead storage battery according to an embodiment of the present invention is cut away. FIG. 2a is a schematic front view showing an example of the positive electrode plate of FIG. 2b is a cross-sectional view taken along line IIb-IIb in FIG. 2a. FIG. 3 is a schematic diagram of a main part for explaining the inclined state of the ears of a plurality of positive plates in the electrode plate group of FIG. FIG. 3 is a cross-sectional view in the thickness direction of the ear portion, and the ear portion is indicated by a solid line, and a portion other than the ear portion of the positive electrode plate (main part near the ear portion) is indicated by a dotted line.
 図1に示すように、鉛蓄電池は、複数の極板群4を備えている。極板群4は、電解液(図示せず)とともにセル室5aを複数個有する電槽5の各セル室5a内に収納されている。そして電槽5の開口部は、蓋6によって封口されている。 As shown in FIG. 1, the lead storage battery includes a plurality of electrode plate groups 4. The electrode plate group 4 is accommodated in each cell chamber 5a of the battery case 5 having a plurality of cell chambers 5a together with an electrolytic solution (not shown). The opening of the battery case 5 is sealed with a lid 6.
 極板群4では、正極板1と負極板2とがセパレータ3を介して積層されている。各正極板1は、集電のための耳部1cを有しており、各負極板2も同様に耳部を有している。正極板1の耳部1cは1つの極板群4ごとにまとめて正極性ストラップ7と一体化されている。また、正極板と同様に、負極板の耳部は1つの極板群4ごとにまとめて負極性ストラップ8と一体化されている。なお、図1において、耳部の厚さ方向を矢印にて示した。 In the electrode plate group 4, the positive electrode plate 1 and the negative electrode plate 2 are laminated via the separator 3. Each positive electrode plate 1 has an ear 1c for collecting current, and each negative electrode plate 2 also has an ear. The ears 1 c of the positive electrode plate 1 are integrated with the positive electrode strap 7 for each electrode plate group 4. Similarly to the positive electrode plate, the ears of the negative electrode plate are integrated into one negative electrode group 4 and integrated with the negative polarity strap 8. In addition, in FIG. 1, the thickness direction of the ear | edge part was shown with the arrow.
 図2a、図2bに示すように、正極板1は、正極格子1a、正極活物質1b、耳部1cおよび上骨部1dを備えている。格子体は、正極格子1aおよび上骨部1dで構成される。1セルあたり(つまり、1つのセル室あたり)、4~15枚の正極板が用いられる。 As shown in FIGS. 2a and 2b, the positive electrode plate 1 includes a positive electrode lattice 1a, a positive electrode active material 1b, an ear 1c, and an upper bone 1d. The lattice body is composed of a positive electrode lattice 1a and an upper bone portion 1d. 4 to 15 positive plates are used per cell (that is, per cell chamber).
 本発明では、複数の正極板と負極板とを備える極板群において、50%以上の枚数の正極板の耳部を傾斜させ、一部の傾斜した耳部と他の傾斜した耳部との傾斜方向が逆向きとする。鉛蓄電池が複数の極板群を有する場合、少なくとも1つの極板群において、一部の傾斜した耳部と他の傾斜した耳部との傾斜方向が逆向きであればよく、全ての極板群の各極板群において、一部の傾斜した耳部と他の傾斜した耳部とで傾斜方向が逆向きであってもよい。1つの極板群において、耳部が鉛直方向に直立した正極板が含まれていてもよいが、その数は少ない方が好ましい。1つの極板群において、傾斜した正極板は、極板群に含まれる正極板全体の枚数の70%以上であることが好ましく、90%以上であることがさらに好ましい。正極板の耳部の破断を抑制する効果をさらに高める観点からは、少なくとも1つの極板群において、全ての正極板の耳部が傾斜しており、一部の耳部と他の耳部とで傾斜方向が逆向きであることが好ましい。また、同様の観点で、鉛蓄電池に含まれる複数の極板群のうち、50%以上(好ましくは80%以上または90%以上)の極板群において、それぞれ、全ての正極板の耳部が傾斜しており、一部の耳部と他の耳部とで傾斜方向が逆向きであることが好ましい。なお、各極板群は、少なくとも1つの負極板を有していればよいが、正極板と負極板が交互になるように、複数の負極板を有することが好ましい。 In the present invention, in an electrode plate group including a plurality of positive electrode plates and negative electrode plates, the ear portions of the positive electrode plates of 50% or more are inclined, and some inclined ear portions and other inclined ear portions are The inclination direction is reverse. When the lead storage battery has a plurality of electrode plate groups, at least one electrode plate group may be configured so that the inclined directions of some inclined ear portions and other inclined ear portions are opposite to each other. In each electrode plate group of the group, the inclined direction may be reversed between some inclined ear portions and other inclined ear portions. One electrode plate group may include a positive electrode plate whose ears are upright in the vertical direction, but the number is preferably smaller. In one electrode plate group, the inclined positive electrode plate is preferably 70% or more, more preferably 90% or more, of the total number of positive electrode plates included in the electrode plate group. From the viewpoint of further enhancing the effect of suppressing breakage of the ears of the positive electrode plate, at least one electrode plate group, the ears of all the positive plates are inclined, and some ears and other ears It is preferable that the inclination direction is reverse. From the same viewpoint, among the plurality of electrode plate groups included in the lead storage battery, in each of the electrode plate groups of 50% or more (preferably 80% or more or 90% or more), the ears of all the positive electrode plates are respectively It is inclined and it is preferable that some ear | edge parts and another ear | edge part are reverse directions. Each electrode plate group may have at least one negative electrode plate, but preferably has a plurality of negative electrode plates so that the positive electrode plates and the negative electrode plates are alternated.
 次に図3を用いて、正極板の耳部の傾斜状態について説明する。図3の(a)~(e)に示すように、本実施形態に係る発明の鉛蓄電池の各正極板の耳部1cは、その厚さ方向の断面視において、鉛直方向に対して傾斜しており、そのうち少なくとも1つの耳部は、他の耳部と逆方向に傾斜している。 Next, the inclination state of the ear part of the positive electrode plate will be described with reference to FIG. As shown in FIGS. 3A to 3E, the ear portion 1c of each positive electrode plate of the lead storage battery of the invention according to the present embodiment is inclined with respect to the vertical direction in a sectional view in the thickness direction. And at least one ear is inclined in the opposite direction to the other ear.
 図3では、耳部の厚さ方向の断面において、鉛直方向に対して、耳部が右側に傾斜している場合にその傾斜角を正で表し、左側に傾斜している場合には負で表すものとしている。 In FIG. 3, in the cross section in the thickness direction of the ear portion, when the ear portion is inclined to the right side with respect to the vertical direction, the inclination angle is expressed as positive, and when the ear portion is inclined to the left side, it is negative. To represent.
 製造バラツキに鑑み、本明細書において、耳部の傾斜とは、耳部の厚さ方向の断面視において、鉛直方向に対して絶対値で0度より大きく傾斜していることを意味し、0.1度以上または1度以上傾斜していることが好ましく、3度以上または5度以上傾斜していてもよい。耳部の傾斜は、絶対値で、例えば、10度以下であることが好ましく、7度以下であることがさらに好ましい。これらの下限値と上限値とは任意に組み合わせることができる。耳部の傾斜の絶対値は、例えば、0.1~10度、0.1~7度、1~7度、3~7度、または5~7度であってもよい。 In view of manufacturing variations, in this specification, the inclination of the ear means that the ear is inclined more than 0 degrees in absolute value with respect to the vertical direction in a cross-sectional view in the thickness direction. It is preferable to incline at least 1 degree or at least 1 degree, and may incline at least 3 degrees or at least 5 degrees. The inclination of the ear portion is an absolute value, for example, preferably 10 degrees or less, and more preferably 7 degrees or less. These lower limit values and upper limit values can be arbitrarily combined. The absolute value of the inclination of the ear may be, for example, 0.1 to 10 degrees, 0.1 to 7 degrees, 1 to 7 degrees, 3 to 7 degrees, or 5 to 7 degrees.
 図3の(a)において、耳部1cは、左から順に+3度、+3度、+3度、+3度、-3度の傾斜角を有している。 3A, the ear 1c has inclination angles of +3 degrees, +3 degrees, +3 degrees, +3 degrees, and -3 degrees in order from the left.
 図3の(b)において、耳部1cは、左から順に-5度、+3度、+3度、+2度、+3度の傾斜角を有している。 3B, the ear 1c has inclination angles of −5 degrees, +3 degrees, +3 degrees, +2 degrees, and +3 degrees in order from the left.
 図3の(c)において、耳部1cは、左から順に-2度、+3度、+2度、-2度、+2度の傾斜角を有している。 3 (c), the ear 1c has inclination angles of −2 degrees, +3 degrees, +2 degrees, −2 degrees, and +2 degrees in order from the left.
 図3の(d)において、耳部1cは、左から順に+2度、-2度、+3度、+4度、-3度の傾斜角を有している。 In FIG. 3D, the ear 1c has inclination angles of +2 degrees, -2 degrees, +3 degrees, +4 degrees, and -3 degrees in order from the left.
 図3の(e)において、耳部1cは、左から順に+3度、+2度、+4度、-3度、-3度の傾斜角を有している。 3 (e), the ear 1c has inclination angles of +3 degrees, +2 degrees, +4 degrees, -3 degrees, and -3 degrees in order from the left.
 このように、傾斜させた耳部のうち少なくともひとつを他の傾斜した耳部と逆方向に傾斜させることによって、正極板の膨張による歪への耐性を向上させるとともに、振動状態に受ける応力を分散させることが可能となる。したがって、鉛蓄電池の正極板の耳部の破断を防止することができる。 In this way, by tilting at least one of the tilted ears in the opposite direction to the other tilted ears, the resistance to distortion due to expansion of the positive electrode plate is improved and the stress applied to the vibration state is dispersed. It becomes possible to make it. Therefore, breakage of the ear portion of the positive electrode plate of the lead storage battery can be prevented.
 一方(例えば、正の方向)に傾斜させた耳部を有する正極板の位置や枚数は特に制限されない。また、傾斜角の絶対値は、極板群において、全てまたは一部の正極板の耳部で同じであってもよく、全ての正極板の耳部で異なっていてもよい。 The position and number of positive electrode plates having ears inclined in one direction (for example, in the positive direction) are not particularly limited. In addition, the absolute value of the inclination angle may be the same for all or some of the ears of the positive electrode plate in the electrode plate group, or may be different for the ears of all the positive electrode plates.
 極板群における両端の耳部(図3では、最右側と最左側の耳部1c)は、互いに近づく方向に向かって、つまり内側に傾斜していることが好ましい。このように構成すると、正極性ストラップを小型軽量化できる。 The ears at both ends of the electrode plate group (in FIG. 3, the rightmost and leftmost ears 1c) are preferably inclined toward each other, that is, inward. If comprised in this way, a positive polarity strap can be reduced in size and weight.
 耳部の傾斜は、正極板の耳部または格子体と一体化した状態の耳部の部分を、所定の傾斜角を設定した櫛形治具に挿入して、櫛型治具の傾斜角に沿って屈曲させる(つまり、耳部の傾斜角を矯正する)ことで得られる。 For the inclination of the ear part, the ear part of the positive electrode plate or the part of the ear part integrated with the lattice is inserted into a comb-shaped jig having a predetermined inclination angle, and along the inclination angle of the comb-shaped jig. And bending (that is, correcting the inclination angle of the ear).
 正極の格子体を構成する材料としては、例えば、鉛や鉛合金が挙げられる。正極は、格子体と、耳部と、正極活物質とを含んでいればよく、格子体と、耳部と、正極活物質を含む正極電極材料とを含んでいてもよい。耳部は、格子体の上部に一体化している。耳部の材料としては、格子体と同様に、鉛や鉛合金が利用できる。正極格子は、鉛または鉛合金の鋳造により形成してもよく、鉛または鉛合金シートを加工して形成してもよい。加工方法としては、例えば、エキスパンド加工や打ち抜き(パンチング)加工が挙げられる。 Examples of the material constituting the positive electrode lattice include lead and lead alloys. The positive electrode only needs to include a lattice body, an ear portion, and a positive electrode active material, and may include a lattice body, an ear portion, and a positive electrode material containing the positive electrode active material. The ear is integrated with the upper part of the lattice. As the material for the ear, lead or a lead alloy can be used as in the lattice. The positive grid may be formed by casting lead or a lead alloy, or may be formed by processing a lead or lead alloy sheet. Examples of the processing method include an expanding process and a punching process.
 正極電極材料は、正極活物質に加え、鉛蓄電池の正極板に使用される公知の成分や添加剤などを含んでもよい。正極活物質は、酸化還元反応により容量を発現する物質であり、例えば、二酸化鉛もしくは硫酸鉛を含む。正極活物質(または正極電極材料)は、通常、正極格子に担持されている。 The positive electrode material may include known components and additives used for the positive electrode plate of the lead storage battery in addition to the positive electrode active material. The positive electrode active material is a material that develops capacity by an oxidation-reduction reaction, and includes, for example, lead dioxide or lead sulfate. The positive electrode active material (or positive electrode material) is usually carried on a positive electrode grid.
 正極板は、耳部が一体化された格子体において、耳を傾斜させ、正極活物質または正極電極材料を格子体の正極格子に担持させ、熟成、乾燥させ、通常、さらに化成処理を行うことにより得ることができる。正極活物質の担持と、耳の屈曲とはどちらを先に行なってもよい。 The positive electrode plate is a lattice body in which the ears are integrated, the ears are inclined, the positive electrode active material or the positive electrode material is supported on the positive electrode lattice of the lattice body, aged and dried, and usually further chemical conversion treatment is performed. Can be obtained. Either the loading of the positive electrode active material or the bending of the ear may be performed first.
 複数の正極板の耳部と一体化するストラップの材質としては、格子体と同様に、例えば、鉛や鉛合金が利用される。 As the material of the strap integrated with the ears of the plurality of positive electrode plates, for example, lead or lead alloy is used in the same manner as the lattice body.
 負極板と正極板との間には、通常、セパレータが配置される。負極板、セパレータ、電解液、電槽、電槽蓋など、正極板の耳部以外の構成には、公知のものを採用できる。 A separator is usually disposed between the negative electrode plate and the positive electrode plate. A well-known thing can be employ | adopted for structures other than the ear | edge part of a positive electrode plate, such as a negative electrode plate, a separator, electrolyte solution, a battery case, a battery case cover.
 本発明を現時点での好ましい実施態様に関して説明したが、そのような開示を限定的に解釈してはならない。種々の変形および改変は、上記開示を読むことによって本発明に属する技術分野における当業者には間違いなく明らかになるであろう。したがって、添付の請求の範囲は、本発明の真の精神および範囲から逸脱することなく、すべての変形および改変を包含する、と解釈されるべきものである。 Although the present invention has been described in terms of the presently preferred embodiments, such disclosure should not be construed as limiting. Various changes and modifications will no doubt become apparent to those skilled in the art to which the present invention pertains after reading the above disclosure. Accordingly, the appended claims should be construed to include all variations and modifications without departing from the true spirit and scope of this invention.
 本発明の鉛蓄電池は、正極板の耳部の破断が抑制され、優れた信頼性を有するため、産業上有用である。 The lead-acid battery of the present invention is industrially useful because it has excellent reliability because the breakage of the ears of the positive electrode plate is suppressed.
 1   正極板
 1a  正極格子
 1b  正極活物質
 1c  耳部
 1d  上骨部
 2   負極板
 3   セパレータ
 4   極板群
 5   電槽
 5a  セル室
 6   蓋
 7   正極性ストラップ
 8   負極性ストラップ
DESCRIPTION OF SYMBOLS 1 Positive electrode plate 1a Positive electrode grid 1b Positive electrode active material 1c Ear | edge part 1d Upper part 2 Negative electrode plate 3 Separator 4 Electrode plate group 5 Battery case 5a Cell chamber 6 Lid 7 Positive polarity strap 8 Negative polarity strap

Claims (3)

  1.  複数の正極板と負極板とを備える極板群を少なくとも1つ含み、
     前記極板群の前記複数の正極板は、それぞれ、格子体と、耳部と、正極活物質と、を含み、前記複数の正極板の前記耳部は、ストラップに溶接されており、
     前記耳部の厚さ方向の断面視において、
     前記複数の正極板のうち50%以上の枚数の前記正極板の前記耳部は、鉛直方向に対して傾斜しており、
     傾斜した前記耳部のうち少なくとも1つは、他の傾斜した前記耳部と逆方向に傾斜している、鉛蓄電池。
    Including at least one electrode plate group including a plurality of positive electrode plates and negative electrode plates;
    The plurality of positive plates of the electrode group each include a grid, ears, and a positive electrode active material, and the ears of the plurality of positive plates are welded to a strap,
    In a cross-sectional view in the thickness direction of the ear,
    Of the plurality of positive plates, the ears of the positive plates of 50% or more are inclined with respect to the vertical direction,
    At least one of the inclined ear portions is a lead storage battery that is inclined in a direction opposite to the other inclined ear portions.
  2.  前記極板群において、両端の前記正極板の前記耳部は、内側に傾斜している、請求項1に記載の鉛蓄電池。 The lead acid battery according to claim 1, wherein in the electrode plate group, the ear portions of the positive electrode plates at both ends are inclined inward.
  3.  鉛直方向に対する前記耳部の傾斜角は、絶対値で0.1度~7度の範囲にある、請求項1または2に記載の鉛蓄電池。 3. The lead acid battery according to claim 1, wherein an inclination angle of the ear portion with respect to a vertical direction is in a range of 0.1 degrees to 7 degrees in absolute value.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110870100A (en) * 2018-05-31 2020-03-06 古河电池株式会社 Lead-acid battery

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113629362A (en) * 2021-08-10 2021-11-09 巨江电源科技有限公司 Tab welding structure, storage battery assembly and manufacturing method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56174456U (en) * 1980-05-26 1981-12-23
JPS63199453U (en) * 1987-06-12 1988-12-22
JP2002075325A (en) * 2000-08-25 2002-03-15 Shin Kobe Electric Mach Co Ltd Small control valve type lead-acid battery
JP3118439U (en) * 2005-11-09 2006-01-26 古河電池株式会社 Comb-shaped jig for welding the ear row of the electrode plate group of a storage battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56174456U (en) * 1980-05-26 1981-12-23
JPS63199453U (en) * 1987-06-12 1988-12-22
JP2002075325A (en) * 2000-08-25 2002-03-15 Shin Kobe Electric Mach Co Ltd Small control valve type lead-acid battery
JP3118439U (en) * 2005-11-09 2006-01-26 古河電池株式会社 Comb-shaped jig for welding the ear row of the electrode plate group of a storage battery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110870100A (en) * 2018-05-31 2020-03-06 古河电池株式会社 Lead-acid battery
CN110870100B (en) * 2018-05-31 2022-09-30 古河电池株式会社 Lead-acid battery

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