WO2017145893A1 - Accumulateur au plomb - Google Patents

Accumulateur au plomb 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
Authority
WO
WIPO (PCT)
Prior art keywords
positive electrode
electrode plate
ear
positive
plates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/005535
Other languages
English (en)
Japanese (ja)
Inventor
克実 伊藤
圭 石牧
亮太 菊地
藤森　智貴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GS Yuasa International Ltd
Original Assignee
GS Yuasa International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GS Yuasa International Ltd filed Critical GS Yuasa International Ltd
Priority to JP2018501615A priority Critical patent/JP6935795B2/ja
Publication of WO2017145893A1 publication Critical patent/WO2017145893A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • H01M50/541—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges for lead-acid accumulators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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

La présente invention évite la fracturation d'une partie de patte de plaque positive d'un accumulateur au plomb. L'accumulateur au plomb de la présente invention comprend au moins un groupe de plaques pourvu d'une pluralité de plaques positives et de plaques négatives. La pluralité de plaques positives du groupe de plaques comprend respectivement un corps de réseau, une partie de patte et un matériau actif d'électrode positive. Les parties de patte de la pluralité de plaques positives sont soudées à une sangle. Dans une vue en coupe transversale de la direction de l'épaisseur de la partie de patte, parmi la pluralité de plaques positives, les parties de patte de 50 % ou plus de la pluralité de plaques positives sont inclinées dans la direction verticale, et au moins une des parties de patte inclinées est inclinée dans la direction opposée par rapport aux autres parties de patte inclinées.
PCT/JP2017/005535 2016-02-22 2017-02-15 Accumulateur au plomb Ceased WO2017145893A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018501615A JP6935795B2 (ja) 2016-02-22 2017-02-15 鉛蓄電池

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-030627 2016-02-22
JP2016030627 2016-02-22

Publications (1)

Publication Number Publication Date
WO2017145893A1 true WO2017145893A1 (fr) 2017-08-31

Family

ID=59685150

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/005535 Ceased WO2017145893A1 (fr) 2016-02-22 2017-02-15 Accumulateur au plomb

Country Status (2)

Country Link
JP (1) JP6935795B2 (fr)
WO (1) WO2017145893A1 (fr)

Cited By (1)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113629362A (zh) * 2021-08-10 2021-11-09 巨江电源科技有限公司 极耳焊接构造、蓄电池组件及其制造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56174456U (fr) * 1980-05-26 1981-12-23
JPS63199453U (fr) * 1987-06-12 1988-12-22
JP2002075325A (ja) * 2000-08-25 2002-03-15 Shin Kobe Electric Mach Co Ltd 小形制御弁式鉛蓄電池
JP3118439U (ja) * 2005-11-09 2006-01-26 古河電池株式会社 蓄電池の極板群の耳列溶接用櫛歯状治具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56174456U (fr) * 1980-05-26 1981-12-23
JPS63199453U (fr) * 1987-06-12 1988-12-22
JP2002075325A (ja) * 2000-08-25 2002-03-15 Shin Kobe Electric Mach Co Ltd 小形制御弁式鉛蓄電池
JP3118439U (ja) * 2005-11-09 2006-01-26 古河電池株式会社 蓄電池の極板群の耳列溶接用櫛歯状治具

Cited By (2)

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

Also Published As

Publication number Publication date
JPWO2017145893A1 (ja) 2018-12-13
JP6935795B2 (ja) 2021-09-15

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