WO2022264817A1 - 鉛蓄電池及びその製造方法 - Google Patents

鉛蓄電池及びその製造方法 Download PDF

Info

Publication number
WO2022264817A1
WO2022264817A1 PCT/JP2022/022362 JP2022022362W WO2022264817A1 WO 2022264817 A1 WO2022264817 A1 WO 2022264817A1 JP 2022022362 W JP2022022362 W JP 2022022362W WO 2022264817 A1 WO2022264817 A1 WO 2022264817A1
Authority
WO
WIPO (PCT)
Prior art keywords
bushing
rib
lead
peripheral surface
recess
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/JP2022/022362
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
昭人 後藤
茂雄 青根
正幸 寺田
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.)
Energywith Co Ltd
Original Assignee
Energywith Co 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 Energywith Co Ltd filed Critical Energywith Co Ltd
Priority to JP2023529768A priority Critical patent/JPWO2022264817A1/ja
Publication of WO2022264817A1 publication Critical patent/WO2022264817A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/06—Lead-acid accumulators
    • H01M10/12—Construction or manufacture
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/112—Monobloc comprising multiple compartments
    • H01M50/114—Monobloc comprising multiple compartments specially adapted for lead-acid cells
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/193—Organic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present disclosure relates to lead-acid batteries and manufacturing methods thereof.
  • a lead-acid battery is one example of a storage battery.
  • Patent Literature 1 listed below discloses a lead-acid battery in which an adhesive is filled and cured between a terminal portion and a rib provided on a lid.
  • the welded portion of the lead bushing included in the terminal portion is provided with a projecting portion projecting toward the rib.
  • the adhesive may not be sufficiently filled under the projecting portion.
  • a gap occurs between the bushing and the hardened adhesive. If such a gap occurs, the adhesive will easily peel off from the bushing. As a result, the electrolyte may leak from the inside of the lead-acid battery through the through hole provided in the lid and accommodating the terminal portion.
  • An object of one aspect of the present disclosure is to provide a lead-acid battery capable of suppressing the outflow of electrolyte through a through-hole provided in the lid, and a method of manufacturing the same.
  • a lead-acid battery includes an electrode plate group having a positive electrode, a negative electrode, and a separator, a body containing the electrode plate group and an electrolytic solution, and a case having a lid overlapping the body.
  • the lid includes a through hole, a plate portion surrounding the through hole and having a recess provided on the surface of the case, a bushing provided on the inner peripheral surface of the through hole, and a filler filling the recess.
  • the bushing has a ring-shaped flange portion accommodated in the recess, and the flange portion has a curved outer peripheral surface.
  • the outer peripheral surface of the flange provided on the bushing exhibits a curved surface.
  • the filler is less likely to get caught on the outer peripheral surface of the flange and easily flows well into the recess along the surface of the flange.
  • a gap is less likely to form between the bushing and the filler in the recess, so that the filler is less likely to come off the bushing. Therefore, according to one aspect of the present disclosure, it is possible to provide a lead-acid battery capable of suppressing the outflow of the electrolytic solution through the through-hole provided in the lid.
  • the flange part may be buried in the filler.
  • the flange portion functions as a hooking portion for the filling material, it becomes difficult for the filling material to come out of the concave portion.
  • the plate portion may further have a first rib that surrounds the bushing and is provided in the recess, and the inner peripheral surface of the first rib may be an inclined surface that is inclined away from the bushing as it approaches the tip of the first rib.
  • the filler smoothly flows into the recess not only along the flange portion but also along the inner peripheral surface of the first rib. This makes it more difficult for a gap to form between the bushing and the filler in the recess.
  • the tip of the first rib may be closer to the through hole than the flange portion in the stacking direction of the main body and the lid. In this case, the filler can easily flow toward the first rib.
  • the bushing further has an annular portion spaced from the flange portion, the annular portion exposed from the plate portion and having an exposed bottom surface corresponding to a portion of the bottom surface of the recess, the exposed bottom surface of the annular portion and the flange portion.
  • the gap between may be filled with a filler. In this case, the portion of the filler that fills the gap and the bushing are fitted together, so that the filler is less likely to escape from the recess.
  • a lead-acid battery includes an electrode plate group having a positive electrode, a negative electrode, and a separator, a body containing the electrode plate group and an electrolytic solution, and a case having a lid overlapping the body.
  • the lid includes a plate portion having a through hole, a recess provided on the surface of the case and surrounding the through hole, a first rib provided in the recess and surrounding the through hole, and a bushing in close contact with the inner peripheral surface of the through hole. and a filling material with which the recess is filled.
  • the inner peripheral surface of the first rib is an inclined surface that is inclined away from the bushing as it approaches the tip of the first rib.
  • the inner peripheral surface of the first rib that surrounds the bushing is an inclined surface that slopes away from the bushing toward the tip of the first rib. Therefore, when the recess is filled with the filler, the filler smoothly flows into the recess along the inner peripheral surface of the first rib. As a result, a gap is less likely to form between the bushing and the filler in the recess, so that the filler is less likely to come off from the bushing. Therefore, according to another aspect of the present disclosure, it is possible to provide a lead-acid battery capable of suppressing the outflow of electrolyte through the through-hole provided in the lid.
  • the inner peripheral surface of the first rib may be more inclined than the outer peripheral surface of the first rib.
  • the filling material flows more favorably into the recess along the inner peripheral surface. This makes it difficult to create a good gap between the bushing and the filler in the recess.
  • the bushing is exposed from the plate portion and has an exposed bottom surface that has a ring shape when viewed from the stacking direction of the main body and the lid, and the width of the exposed bottom surface viewed from the stacking direction may be 5 mm or more. In this case, sufficient bonding strength can be ensured between the exposed bottom surface and the filler.
  • the bushing contains lead, the filler contains epoxy resin, and the stress generated on the exposed bottom surface when the lid is deformed may be lower than the shear stress of lead and epoxy resin. In this case, even if the lid is deformed, good bonding between the bushing and the filler is maintained.
  • the plate portion may further have a second rib provided along the outer edge of the recess, and a tip portion of the second rib may be provided with a step. In this case, since the filler is caught by the tip of the second rib, the filler is less likely to leak from the recess.
  • a method of manufacturing a lead-acid battery includes a fixing step of fixing a lid to a body of a case that houses an electrode group and an electrolytic solution; A welding step of welding a bushing containing lead, a roughening step of roughening the surface of a recess provided on the surface of the lid and surrounding the bushing, a filling step of filling the recess with a liquid filler, and a recess and a curing step of curing the filler material therein.
  • the lid has a rib that is provided in the recess and surrounds the bushing, and the inner peripheral surface of the rib is an inclined surface that slopes away from the bushing toward the tip of the rib.
  • the inner peripheral surface of the rib that surrounds the bushing is an inclined surface that is inclined away from the bushing toward the tip of the rib. Therefore, when the recess is filled with the filler, the filler smoothly flows into the recess along the inner peripheral surface of the rib. As a result, a gap is less likely to form between the bushing and the filler in the recess, so that the filler is less likely to come off the bushing.
  • the surface of the recess is roughened, the bonding strength between the surface and the filler can be strengthened. Therefore, the filler is less likely to come off from the surface of the recess. Therefore, according to still another aspect of the present disclosure, it is possible to provide a method of manufacturing a lead-acid battery capable of suppressing the outflow of the electrolytic solution through the through-hole provided in the lid.
  • the concave portions may be irradiated with plasma.
  • the recess is provided with ribs or the like, the surface of the recess can be easily roughened.
  • the bushing has a ring shape when viewed from the stacking direction and has a flange portion accommodated in the recess, and the flange portion includes first and second side surfaces intersecting the stacking direction, and the first and second side surfaces. At least one of the first side surface and the outer peripheral surface and the second side surface and the outer peripheral surface may be smoothly connected after the welding process. In the flange portion, at least one of the first side surface and the outer peripheral surface and the second side surface and the outer peripheral surface are smoothly connected. In this case, when the recess is filled with the filler, the filler is less likely to get caught on the boundary between the first side surface and the outer peripheral surface and/or the boundary between the second side surface and the outer peripheral surface. Therefore, the filling material can easily flow well into the concave portion along the surface of the flange portion.
  • the inner peripheral surface of the rib may be more inclined than the outer peripheral surface of the rib. In this case, the filling material flows better into the recess along the inner peripheral surface of the rib. This makes it difficult to create a good gap between the bushing and the filler in the recess.
  • a lead-acid battery capable of suppressing outflow of electrolyte through a through-hole provided in a lid, and a method of manufacturing the same.
  • FIG. 1 is a schematic exploded perspective view showing a lead-acid battery according to an embodiment.
  • 2 is a schematic perspective view showing part of the lead-acid battery shown in FIG. 1.
  • FIG. 3 is a schematic perspective cross-sectional view along line III-III of FIG.
  • FIG. 4 is a schematic cross-sectional view along line IV-IV of FIG.
  • FIG. 5 is a flow chart for explaining a method of manufacturing a lead-acid battery.
  • (a) of FIG. 6 is a schematic perspective view showing a lid, and (b) of FIG. 6 is an enlarged view of a main part of the lid.
  • (a) of FIG. 7 is a schematic cross-sectional view showing the bushing and the terminal before welding
  • (b) of FIG. 7 is a schematic cross-sectional view showing the bushing and the terminal after welding.
  • FIG. 1 is a schematic exploded perspective view showing a lead-acid battery according to this embodiment.
  • the lead-acid battery 1 is, for example, a valve-regulated lead-acid battery.
  • the lead-acid battery 1 includes a plate group 3 , a positive terminal 5 ⁇ /b>A, a negative terminal 5 ⁇ /b>B, a control valve 6 and a case 7 .
  • the electrode plate group 3 is an assembly of a plurality of electrode plates, and has a plurality of positive electrodes 10, a plurality of negative electrodes 12, and a plurality of separators 13.
  • positive electrodes 10 and negative electrodes 12 are alternately arranged.
  • a separator 13 is positioned between the adjacent positive electrode 10 and negative electrode 12 . Therefore, the positive electrode 10, the separator 13 and the negative electrode 12 are stacked in order in a predetermined direction.
  • the negative electrode 12 is arranged at the end of the positive electrode 10, the negative electrode 12, and the separator 13 in the arrangement direction (hereinafter sometimes simply referred to as "arrangement direction").
  • the assembly of the positive electrode 10, the negative electrode 12, and the separator 13 is also called a battery electrode group.
  • the electrode plate group 3 and the electrolytic solution are accommodated in the case 7, the electrolytic solution exists in the gap between the positive electrode 10 and the separator 13, in the separator 13, and the like.
  • the arrangement direction corresponds to the first direction X.
  • the directions orthogonal to the first direction X are referred to as a second direction Y and a third direction Z hereinafter.
  • the positive electrode 10 is a positive electrode plate in the lead-acid battery 1 and is electrically connected to the positive electrode terminal 5A. Each positive electrode 10 and the positive electrode terminal 5A are electrically connected by a positive electrode strap 17 . Although not shown, the positive electrode 10 has, for example, a current collector and a positive electrode material.
  • the negative electrode 12 is a negative electrode plate in the lead-acid battery 1 and is electrically connected to the negative electrode terminal 5B. Each negative electrode 12 and the negative terminal 5B are electrically connected by a negative strap 18 .
  • the negative electrode 12 has, for example, a current collector and a negative electrode material.
  • the separator 13 is a battery member for preventing a short circuit between the positive electrode 10 and the negative electrode 12 . The separator 13 electrically insulates between the positive electrode 10 and the negative electrode 12 while allowing ions to pass therethrough. There are no particular restrictions. Each separator 13 may have a bag shape and cover the main portion of the corresponding negative electrode 12 .
  • the constituent material of the current collector may be any conductive material, and examples thereof include lead-calcium-tin alloys, lead-antimony-arsenic alloys, and other lead alloys.
  • the positive electrode material includes, for example, a positive electrode active material after chemical conversion.
  • the negative electrode material includes, for example, a negative electrode active material such as spongy lead. Examples of materials (materials) for the separator 13 include glass fibers, resins, and inorganic substances.
  • Each of the positive terminal 5A and the negative terminal 5B is a terminal for electrically connecting the electrode plate group 3 and an external device.
  • Each of the positive terminal 5A and the negative terminal 5B has, for example, a first portion 5a fixed to the lid 9 and a second portion 5b fixed to the first portion 5a (see FIGS. 3 and 4 described later). reference).
  • the first portion 5a is a conductive portion containing lead.
  • the first portion 5a may be formed mainly of lead, or may be formed only of lead.
  • the second portion 5b is a core portion made of metal or alloy.
  • the second portion 5b is made of, for example, an alloy (brass) of copper and zinc.
  • the case 7 has a main body 8 and a lid 9 overlapping the main body 8 in the third direction Z (stacking direction).
  • the main body 8 is a box-shaped container.
  • the main body 8 is made of a material such as polypropylene.
  • the main body 8 accommodates the electrode plate group 3 and an electrolytic solution.
  • the main body 8 is composed of four side portions and a bottom portion. The corners formed by the bottom and sides are rounded.
  • FIG. 2 is a perspective view showing part of the lead-acid battery shown in FIG. 3 is a perspective cross-sectional view along line III-III of FIG. 2.
  • FIG. FIG. 4 is a schematic cross-sectional view along line IV-IV of FIG.
  • FIG. 2 mainly shows the lid 9 with the control valve 6 removed.
  • the lid 9 is a member that covers the opening of the main body 8, and is made of a material such as polypropylene, like the main body 8.
  • the lid 9 has a plate portion 21 , bushings 22 and 23 and fillers 24 and 25 .
  • the bushings 22 and 23 have the same shape, and the fillers 24 and 25 are made of the same material and have the same shape. Therefore, detailed description of the bushing 23 and the filler 25 is omitted below.
  • the plate portion 21 is a main portion of the lid 9 and is made of a material such as polypropylene, like the main body 8 .
  • the plate portion 21 has a substantially hat shape when viewed in the first direction X and the second direction Y, respectively.
  • the plate portion 21 has a main portion 21a that covers the opening of the main body 8, and an edge portion 21b that surrounds the main portion 21a and is positioned one step below the main portion 21a.
  • the main portion 21a has a front surface 31 and a back surface 32 that intersect with the third direction Z, through holes 33-35, recesses 36 and 37, and cylindrical portions 38-40.
  • the through holes 33 and 34 have the same shape, the recesses 36 and 37 have the same shape, and the cylindrical portions 38 and 39 have the same shape. Therefore, detailed description of the through hole 34, the recess 37, and the cylindrical portion 39 will be omitted below.
  • the surface 31 corresponds to, for example, a surface exposed when the lid 9 is attached to the main body 8, and has a substantially rectangular shape when viewed from the third direction Z. Surface 31 forms part of the surface of case 7 .
  • the surface 31 is provided with concave portions 36 and 37 and a cylindrical portion 40 that are spaced apart from each other.
  • the back surface 32 is a surface located on the opposite side of the front surface 31 in the third direction Z, and corresponds to a surface that is hidden when the lid 9 is attached to the main body 8 .
  • the rear surface 32 is provided with cylindrical portions 38 and 39 and a reinforcing portion RF.
  • the reinforcement portion RF is a portion provided to improve the rigidity of the lid 9 .
  • the shape of the reinforcing portion RF is not particularly limited.
  • Each of the through-holes 33 to 35 is an opening that has a circular shape when viewed from the third direction Z and extends in the third direction Z.
  • the through hole 35 is positioned between the through holes 33 and 34 in the second direction Y.
  • a positive electrode terminal 5A is provided in the through hole 33
  • a negative electrode terminal 5B is provided in the through hole 34
  • a control valve 6 is provided in the through hole 35.
  • the through hole 33 communicates with the cylindrical portion 38
  • the through hole 34 communicates with the cylindrical portion 39
  • the through hole 35 communicates with the cylindrical portion 40 .
  • the cavity of the tubular portion 38 is regarded as part of the through hole 33
  • the cavity of the tubular portion 39 is regarded as part of the through hole 34
  • the hollow of the tubular portion 40 is regarded as part of the through hole 35 .
  • the inner peripheral surface 38a of the tubular portion 38 is regarded as part of the inner peripheral surface 33a of the through hole 33
  • the inner peripheral surface 39a of the tubular portion 39 is regarded as part of the inner peripheral surface 34a of the through hole 34
  • the tubular portion The inner peripheral surface 40 a of the portion 40 is regarded as part of the inner peripheral surface 35 a of the through hole 35 .
  • the recessed portion 36 is a depression surrounding the through hole 33 when viewed from the third direction Z provided on the surface 31 .
  • the surface 36a of the recess 36 has an annular shape when viewed from the third direction Z.
  • the concave portion 36 is provided with a first rib 41 that surrounds the through hole 34 and the bushing 22 when viewed from the third direction Z, and a second rib 42 that surrounds the first rib 41 when viewed from the third direction Z.
  • the first rib 41 is a portion that has an annular shape when viewed from the third direction Z and is provided inside the recess 36 .
  • the first rib 41 protrudes from the inner edge of the surface 36a toward the surface 31 along the third direction Z. As shown in FIG. A portion of the first rib 41 is located inside the inner edge of the surface 36a. Therefore, a space S is provided between the portion of the first rib 41 and the cylindrical portion 38 .
  • the cross-sectional shape of the first rib 41 perpendicular to the circumferential direction is substantially trapezoidal.
  • the first rib 41 has a top surface 41a, an inner peripheral surface 41b, an outer peripheral surface 41c, and a bottom surface 41d.
  • the top surface 41a is a portion corresponding to the tip of the first rib 41, and has an annular shape when viewed from the third direction Z. As shown in FIG. The top surface 41a is positioned between the surface 31 and the tips of the second ribs 42 in the third direction Z, for example.
  • the inner peripheral surface 41 b is a surface facing the bushing 22 in the first rib 41 .
  • the inner peripheral surface 41 b is an inclined surface that is inclined away from the bushing 22 as it approaches the top surface 41 a (tip) of the first rib 41 .
  • the angle formed by the top surface 41a and the inner peripheral surface 41b is greater than 90°, for example, 100° or more and 150° or less.
  • the outer peripheral surface 41 c is a surface facing the second rib 42 in the first rib 41 .
  • the angle between the top surface 41a and the inner peripheral surface 41b is larger than the angle between the top surface 41a and the outer peripheral surface 41c.
  • the inner peripheral surface 41b is more inclined than the outer peripheral surface 41c.
  • the filling material 24 can be satisfactorily filled in the concave portion 36 .
  • the angle formed by the top surface 41a and the outer peripheral surface 41c is, for example, approximately 90°, but is not limited thereto.
  • the bottom surface 41 d is a surface extending from the surface 36 a of the recess 36 toward the center of the through hole 33 .
  • the second rib 42 is a portion that has an annular shape when viewed from the third direction Z and is provided along the outer edge of the recess 36 . A portion of the second rib 42 is farther from the back surface 32 in the third direction Z than the front surface 31 .
  • the second rib 42 has a top surface 42a, an inner peripheral surface 42b, and an outer peripheral surface 42c.
  • the top surface 42a is provided with a step SE composed of a first step 42d and a second step 42e surrounding the first step 42d. From the viewpoint of suppressing leakage of the filling material 24, the second stage 42e is higher than the first stage 42d.
  • the inner peripheral surface 42 b is a surface facing the first rib 41 in the second rib 42 .
  • the outer peripheral surface 42 c is a surface that connects the top surface 42 a and the surface 31 .
  • the second rib 42 is separated from the first rib 41 . Therefore, a groove G is provided between the outer peripheral surface 41 c of the first rib 41 and the inner peripheral surface 42 b of the second rib 42 in the recess 36 .
  • the groove G is filled with a filler 24 .
  • the outer peripheral surface 41c of the first rib 41 may be an inclined surface that is inclined away from the second rib 42 as the tip of the first rib 41 is approached.
  • the inner peripheral surface 42b of the second rib 42 may be an inclined surface that is inclined away from the first rib 41 as the tip of the second rib 42 is approached.
  • the angle formed between the top surface 41a and the outer peripheral surface 41c of the first rib 41 may be greater than 90°
  • the angle formed between the top surface 42a and the inner peripheral surface 42b of the second rib 42 may be 90°. may be greater than
  • the cylindrical portion 38 is a portion that has a substantially cylindrical shape when viewed from the third direction Z and extends in the third direction Z.
  • the cylindrical portion 38 protrudes from the rear surface 32 toward the electrode plate group 3 .
  • the cylindrical portion 38 has an inner peripheral surface 38a, a first end 38b, and a second end 38c closer to the electrode plate group 3 than the first end 38b.
  • the inner peripheral surface 38a of the cylindrical portion 38 is continuous with the inner peripheral surface 33a of the through hole 33 via the first end 38b. Therefore, as described above, the inner peripheral surface 38a of the cylindrical portion 38 can be regarded as a part of the inner peripheral surface 33a of the through hole 33 .
  • An uneven surface 38d is provided on a part of the inner peripheral surface 38a.
  • a hook 38e is provided on the second end 38c.
  • the hook 38e is a protrusion provided along the inner edge of the second end 38c and protruding toward the surface 31 in the third direction Z. As shown in FIG.
  • the tubular portion 40 is a portion of the lid 9 to which the control valve 6 is attached.
  • the cylindrical portion 40 has a substantially cylindrical shape when viewed from the third direction Z and extends in the third direction Z. As shown in FIG.
  • the bushing 22 is part of the first portion 5a of the positive terminal 5A.
  • the bushing 22 is a cylindrical member provided on the inner peripheral surface 33 a of the through hole 33 . More specifically, the bushing 22 is provided on the inner peripheral surface 33a. In this embodiment, the bushing 22 is in close contact with the inner peripheral surface 33a.
  • the bushing 22 is a member containing lead as a main component or a member formed from lead.
  • the bushing 22 is integrated with the other portion of the first portion 5a through the connecting portion C. As shown in FIG.
  • the connection portion C is a weld formed by welding the bushing 22 and the other portion.
  • the bushing 22 has an annular portion 51 , a first projecting portion 52 , a second projecting portion 53 and a flange portion 54 .
  • the annular portion 51 is a portion that has an annular shape when viewed from the third direction Z, and is located closer to the cylindrical portion 38 than the concave portion 36 in the third direction Z. A portion of the annular portion 51 is located between the tubular portion 38 and the first rib 41 in the third direction Z. As shown in FIG. Moreover, the said part of the annular part 51 has entrapped in the space S. As shown in FIG. In addition, the part is in close contact with the inner peripheral surface 33 a of the through hole 33 , the first end 38 b of the cylindrical portion 38 , and the bottom surface 41 d of the first rib 41 . Therefore, movement of the bushing 22 in the third direction Z is suppressed by the cylindrical portion 38 and the first ribs 41 .
  • the surface 51a (exposed bottom surface) of the annular portion 51 exposed from the plate portion 21 has an annular shape.
  • the surface 51 a corresponds to part of the bottom surface of the recess 36 .
  • the width W of the surface 51a viewed from the third direction Z is, for example, 5 mm or more.
  • the width W may be 6 mm or more, 8 mm or more, or 10 mm or more.
  • the stress generated on the surface 51a of the annular portion 51 of the bushing 22 when the lid 9 is deformed is 10 MPa or less, which is lower than the shear stress of lead and epoxy resin.
  • the stress generated on the surface 51a of the annular portion 51 of the bushing 22 when the lid 9 is deformed is the von Mises stress distribution when the control valve 6 of the lid 9 is recessed by 1 cm using, for example, analysis software Femtet 2019 (Murata Software Co., Ltd.). estimated by Moreover, the shear stress of lead and epoxy resin is about 12 MPa as measured by a tensile shear test according to JIS K 6850:1999. When the width W is 3 mm, the stress generated on the surface 51a of the annular portion 51 of the bushing 22 when the lid 9 is deformed is 16 MPa, which is higher than the shear stress.
  • the first projecting portion 52 is a portion having a tubular shape when viewed from the third direction Z, and extends from the annular portion 51 toward the second end 38c of the tubular portion 38 in the third direction Z.
  • the first protrusion 52 has an outer peripheral surface 52a, an inner peripheral surface 52b, and a tip surface 52c.
  • the outer peripheral surface 52 a is a surface that comes into close contact with the inner peripheral surface 38 a of the cylindrical portion 38 . For this reason, the outer peripheral surface 52 a is provided with unevenness that fits into the uneven surface 38 d of the cylindrical portion 38 . This makes it difficult for a fluid such as an electrolytic solution to pass through between the inner peripheral surface 38 a of the cylindrical portion 38 and the outer peripheral surface 52 a of the first projecting portion 52 .
  • a part of the inner peripheral surface 52b may be an inclined surface that inclines so as to approach the cylindrical portion 38 as it approaches the distal end surface 52c.
  • the portion is located on the distal end side of the first projecting portion 52 .
  • a portion of the tip surface 52c contacts the second end 38c of the tubular portion 38 .
  • a hook 38e is embedded in the tip surface 52c.
  • the second projecting portion 53 is a portion having a cylindrical shape when viewed from the third direction Z, and is accommodated within the recess 36 .
  • the second protrusion 53 extends in the third direction Z from the annular portion 51 toward the surface 31 .
  • a part of the second protruding part 53 is welded to the other part of the first part 5a.
  • the top surface 53a of the second projecting portion 53 is smoothly connected to the surface of the other portion of the first portion 5a via the connecting portion C. As shown in FIG. In other words, the top surface 53a is continuously connected to the surface without steps. In this case, the fluid positioned on the surface of the other portion of the first portion 5a tends to flow toward the top surface 53a.
  • the top surface 53a is an inclined surface that inclines so as to approach the surface 51a as it approaches the first rib 41 .
  • the flange portion 54 is a ring-shaped portion and is accommodated in the recess 36 .
  • the flange portion 54 has an annular shape when viewed from the third direction Z, it may be considered that the flange portion 54 has an annular shape.
  • the flange portion 54 is provided on the second projecting portion 53 and is separated from the surface 51 a of the annular portion 51 .
  • the distance between the flange portion 54 and the surface 51a of the annular portion 51 is, for example, 3 mm or more.
  • a gap between the flange portion 54 and the surface 51 a is filled with the filler 24 .
  • the amount of protrusion of the flange portion 54 from the second protrusion portion 53 is, for example, 3 mm or more.
  • the flange portion 54 can function satisfactorily as a hooking portion for the filler 24 .
  • the distance between the flange portion 54 and the first rib 41 is, for example, 1 mm or more. In this case, the filler 24 can easily pass between the flange portion 54 and the first rib 41 .
  • the flange portion 54 is closer to the annular portion 51 in the third direction Z than the top surface 41 a of the first rib 41 .
  • the top surface 41 a of the first rib 41 is closer to the through hole 33 than the flange portion 54 in the third direction Z.
  • the flange portion 54 has a first side surface 54a and a second side surface 54b that intersect with the third direction Z, and an outer peripheral surface 54c that connects the first side surface 54a and the second side surface 54b and has a curved surface.
  • the first side surface 54a is the top surface of the flange portion 54 and is smoothly connected to the top surface 53a of the second projecting portion 53. In other words, the first side surface 54a is continuously connected to the top surface 53a without steps.
  • the first side surface 54a is an inclined surface that is inclined so as to approach the surface 51a as the distance from the second projecting portion 53 increases. This makes it easier for the fluid (for example, the filler 24 ) positioned on the first side surface 54 a to flow toward the annular portion 51 .
  • the second side surface 54b is the bottom surface of the flange portion 54 and is a facing surface that faces the annular portion 51 in the third direction Z.
  • the second side surface 54b may be an inclined surface that is inclined away from the surface 51a as the second protrusion 53 is approached. In this case, the fluid in the concave portion 36 easily enters the gap between the flange portion 54 and the surface 51 a of the annular portion 51 .
  • the outer peripheral surface 54 c is the tip surface of the flange portion 54 and is a curved surface protruding toward the first rib 41 .
  • the first side surface 54a and the outer peripheral surface 54c, and the second side surface 54b and the outer peripheral surface 54c are smoothly connected to each other.
  • the outer peripheral surface 54c is continuously connected to each of the first side surface 54a and the second side surface 54b without steps. Further, as shown in FIG. 4, sharp portions are not provided at the boundary between the first side surface 54a and the outer peripheral surface 54c and the boundary between the second side surface 54b and the outer peripheral surface 54c.
  • a first corner 54d formed by the first side surface 54a and the outer peripheral surface 54c, and a second corner 54e formed by the second side surface 54b and the outer peripheral surface 54c are each rounded.
  • Each of the first corner portion 54d and the second corner portion 54e corresponds to, for example, a position (inflection portion) where the outer peripheral surface 54c changes.
  • the filler 24 is a member that protects the bushing 22 and the like, and fills the recess 36 .
  • the filler 24 covers at least the entire bushing 22 , the first ribs 41 and the first stages 42 d of the second ribs 42 .
  • the entire bushing 22 and the entire first rib 41 are buried in the filler 24 . Therefore, for example, the flange portion 54 provided on the bushing 22 and the gap between the flange portion 54 and the surface 51 a of the annular portion 51 are also buried by the filler 24 .
  • the filler 24 is, for example, a cured resin member.
  • the resin forming the filler 24 is, for example, an ultraviolet curable resin or a thermosetting resin, and contains at least an epoxy resin.
  • the main component of the resin that constitutes the filler 24 may be an epoxy resin. Multiple types of epoxy resins may be used.
  • the filler 24 may contain various additives and the like.
  • FIG. 5 is a flow chart for explaining a method of manufacturing a lead-acid battery.
  • (a) of FIG. 6 is a schematic plan perspective view showing a lid.
  • (b) of FIG. 6 is an enlarged view of a main portion of the lid.
  • FIG. 7(a) is a schematic cross-sectional view showing a bushing and a terminal before welding.
  • FIG. 7(b) is a schematic cross-sectional view showing the bushing and terminal after welding.
  • the cover 9 is fixed to the main body 8 of the case 7 that accommodates the electrode plate group 3 and the electrolytic solution (first step ST1, fixing step).
  • first step ST1 the lid 9 shown in FIG.
  • the lid 9 is provided with insert-molded bushings 22A and 23A. Therefore, the bushing 22A (in particular, the annular portion 51 and the first projecting portion 52) is in close contact with the lid 9.
  • the bushing 22A is sandwiched between the cylindrical portion 38 provided on the lid 9 and the first rib 41 in the third direction Z.
  • the bushing 22A is separated from the terminal 5 of the electrode plate group 3 immediately after the first step ST1.
  • the bushing 23A is also in close contact with the lid 9 and separated from another terminal of the electrode plate group 3.
  • the corners 54f and 54g included in the flange portion 54A of the bushing 22A are not rounded.
  • the corners 54f and 54g have sharp cross-sectional shapes. Therefore, the flange portion 54A included in the bushing 22A immediately after the first step ST1 and the flange portion 54 of the bushing 22 included in the lead-acid battery 1 manufactured later have different shapes.
  • each terminal of the electrode plate group 3 and the bushings 22A, 23A are welded (second step ST2, welding process).
  • a second step ST2 the terminal 5 of the electrode plate group 3 and the bushing 22A are welded.
  • the bushing 22A is integrated with the terminal 5 through the connection portion C, and the positive terminal 5A is formed.
  • the terminal 5 and the bushing 22A are welded together for 10 seconds or more by arc discharge, for example.
  • the flange portion 54A in particular, the corner portions 54f and 54g
  • the bushing 22 including the flange portion 54 provided with the curved outer peripheral surface 54c and the rounded first corner portion 54d and the rounded second corner portion 54e is formed.
  • another terminal of the electrode plate group 3 and the bushing 23A are welded. Thereby, the negative terminal 5B and the bushing 23 are formed.
  • the surface 31 of the lid 9 is roughened (third step ST3, roughening step).
  • the third step ST3 at least the surface 36a of the recess 36 surrounding the bushing 22 and the surface 37a of the recess 37 surrounding the bushing 23 (see FIG. 6A) are roughened.
  • the third step ST3 is performed so that the inner peripheral surface 41b of the first rib 41 is reliably roughened.
  • at least the surfaces 36a and 37a are irradiated with plasma.
  • the surface roughness (for example, arithmetic mean roughness) of the front surface 31 becomes larger than the surface roughness of the back surface 32, for example.
  • the filling materials 24 and 25 are filled into the concave portions 36 and 37, respectively (fourth step ST4, filling step).
  • the recess 36 is filled with the liquid filler 24 and the recess 37 is filled with the liquid filler 25 .
  • the fillers 24, 25 in the recesses 36, 37 are cured (fifth step ST5, curing step).
  • the fillers 24 and 25 are cured by ultraviolet irradiation, for example. As a result, the case 7 is tightly sealed.
  • the lead-acid battery 1 is manufactured by performing chemical conversion treatment and the like.
  • the adhesive may not be sufficiently filled under the projecting portion, as described above.
  • a gap occurs between the bushing and the hardened adhesive. If such a gap occurs, the electrolyte that has climbed up from the inside of the lead-acid battery along the surface of the through hole in which the bushing is accommodated may enter the gap. In this case, the electrolyte remains outside the lead-acid battery. Due to the electrolytic solution remaining in the gap, the bonding strength between the bushing and the adhesive tends to deteriorate.
  • the outer peripheral surface 54c of the flange portion 54 provided on the bushing 22 presents a curved surface.
  • the filler 24 is less likely to get caught on the outer peripheral surface 54c of the flange portion 54 and easily flows well into the recessed portion 36 along the surface of the flange portion 54. .
  • a gap is less likely to form between the bushing 22 and the filler 24 in the recess 36 , so that the filler 24 is less likely to come off the bushing 22 . Therefore, according to the present embodiment, it is possible to provide the lead-acid battery 1 capable of suppressing the outflow of the electrolytic solution through the through holes 33 and 34 provided in the lid 9 .
  • both the first side surface 54a and the outer peripheral surface 54c and the second side surface 54b and the outer peripheral surface 54c of the flange portion 54 provided on the bushing 22 are smoothly connected. Therefore, when the recessed portion 36 is filled with the filler 24, the filler 24 spreads between the first corner portion 54d, which is the boundary between the first side surface 54a and the outer peripheral surface 54c, and the second side surface 54b and the outer peripheral surface 54c. is less likely to get caught on the second corner 54e, which is the boundary between the two. This makes it easier for the filler 24 to flow well into the recess 36 along the first side surface 54 a , the outer peripheral surface 54 c and the second side surface 54 b that are the surfaces of the flange portion 54 .
  • the filler 24 can be easily filled into a gap (that is, a gap between the flange portion 54 and the surface 51 a of the annular portion 51 ) provided by the existence of the flange portion 54 .
  • An inner peripheral surface 41b of the first rib 41 provided in the recess 36 and surrounding the bushing 22 is an inclined surface that is inclined away from the bushing 22 as the tip of the first rib 41 is approached. Therefore, the liquid filler 24 flows well into the recesses 36 along the inner peripheral surfaces 41b of the first ribs 41 as well. This makes it more difficult for a gap to form between the bushing 22 and the filler 24 in the recess 36 , so that the filler 24 is less likely to come off the bushing 22 .
  • the inner peripheral surface 41b may be inclined more than the outer peripheral surface 41c (that is, the angle formed by the top surface 41a and the inner peripheral surface 41b may be may be greater than the angle between
  • the filler 24 can be favorably guided into a narrow region (for example, the gap between the flange portion 54 and the surface 51a of the annular portion 51) in the recess 36, so that the gap between the bushing 22 and the filler 24 in the recess 36 is reduced. gap becomes more difficult to form.
  • the flange portion 54 is embedded in the filler material 24 . Therefore, since the flange portion 54 functions as a hooking portion for the filler 24 , the filler 24 is less likely to come off from the recess 36 .
  • the top surface 41a that is the tip of the first rib 41 is closer to the through hole 33 than the flange portion 54 in the third direction Z. Therefore, the filler 24 tends to flow toward the first rib 41 side.
  • the bushing 22 is exposed from the plate portion 21 and has a surface 51a which is an exposed bottom surface having a ring shape when viewed from the third direction Z, and the width of the surface 51a when viewed from the third direction Z is , 5 mm or more. Therefore, sufficient bonding strength can be ensured between the surface 51a and the filler 24 .
  • the gap between the surface 51 a corresponding to a part of the bottom surface of the recess 36 and the flange portion 54 is filled with the filler 24 .
  • the portion of the filler 24 that fills the gap is fitted to the bushing 22 (especially the surface 51 a and the flange portion 54 ), so that the filler 24 is less likely to come out of the concave portion 36 .
  • the bushing 22 contains lead
  • the filler 24 contains an epoxy resin
  • the stress generated on the surface 51a when the lid 9 is deformed is lower than the shear stress of lead and epoxy resin. Therefore, even if the lid 9 is deformed, the bonding between the bushing 22 and the filler 24 is well maintained.
  • the plate portion 21 has a second rib 42 that is provided along the outer edge of the recess 36 and has an annular shape when viewed from the third direction Z.
  • the top surface that is the tip of the second rib 42 42a is provided with a step SE. Therefore, since the filler 24 is caught on the top surface 42 a of the second rib 42 , the filler 24 is less likely to leak from the recess 36 .
  • plasma is applied to the concave portions 36 in the third step ST3, which is the roughening step.
  • the inner peripheral surface 41b of the first rib 41 can be favorably irradiated with plasma. Therefore, the surface 36a of the recess 36 can be satisfactorily roughened.
  • a lead-acid battery and a method for manufacturing the same are described, for example, in [1] to [14] below, and have been described in detail based on the above embodiments.
  • an electrode plate assembly having a positive electrode, a negative electrode, and a separator; a body containing the electrode plate group and the electrolytic solution, and a case having a lid overlapping the body,
  • the lid includes a through hole, a plate portion surrounding the through hole and having a recess provided on the surface of the case, a bushing provided on the inner peripheral surface of the through hole, and a filler filling the recess.
  • the bushing has an annular shape and a flange portion accommodated in the recess,
  • the lead-acid battery wherein the flange portion has a curved outer peripheral surface.
  • the plate portion further includes a first rib that is provided in the recess and surrounds the bushing,
  • the lead-acid battery according to [1] or [2], wherein the inner peripheral surface of the first rib is an inclined surface that is inclined away from the bushing toward the tip of the first rib.
  • the bushing further has an annular portion spaced apart from the flange portion, The annular portion has an exposed bottom surface that is exposed from the plate portion and corresponds to a portion of the bottom surface of the recess,
  • an electrode plate assembly having a positive electrode, a negative electrode, and a separator; a body containing the electrode plate group and the electrolytic solution, and a case having a lid overlapping the body,
  • the lid includes a plate portion having a through hole, a recess provided in the surface of the case and surrounding the through hole, a first rib provided in the recess and surrounding the through hole, and an inner portion of the through hole.
  • a bushing that is in close contact with the peripheral surface and a filler that fills the recess,
  • the lead-acid battery wherein the inner peripheral surface of the first rib is an inclined surface that is inclined away from the bushing as the tip of the first rib is approached.
  • the bushing has an exposed bottom surface that is exposed from the plate portion and has an annular shape when viewed from the stacking direction of the main body and the lid, The lead-acid battery according to any one of [1] to [7], wherein the width of the exposed bottom surface viewed from the stacking direction is 5 mm or more.
  • the bushing contains lead,
  • the filler contains an epoxy resin,
  • the lead-acid battery according to [8], wherein the stress generated in the exposed bottom surface when the lid is deformed is lower than the shear stress of lead and epoxy resin.
  • the plate portion further has a second rib provided along the edge of the recess,
  • the lead-acid battery according to any one of claims [1] to [8], wherein a tip portion of the second rib is provided with a step.
  • a fixing step of fixing the lid to the main body of the case containing the electrode plate group and the electrolytic solution a welding step of welding the terminal of the electrode plate group to a bushing provided on the lid and containing lead; a roughening step of roughening the surface of the recess provided on the surface of the lid and surrounding the bushing;
  • the lid has a rib that is provided in the recess and surrounds the bushing,
  • the method for manufacturing a lead-acid battery wherein the inner peripheral surface of the rib is an inclined surface that is inclined away from the bushing as the rib approaches the tip of the rib.
  • the bushing has a ring shape when viewed from the stacking direction of the main body and the lid, and has a flange portion accommodated in the recess, The flange portion has a first side surface and a second side surface that intersect with the stacking direction, and an outer peripheral surface that connects the first side surface and the second side surface and has a curved surface, Manufacture of the lead-acid battery according to [11] or [12], wherein at least one of the first side surface and the outer peripheral surface and the second side surface and the outer peripheral surface are smoothly connected after the welding step.
  • Method. The method for manufacturing a lead-acid battery according to any one of [11] to [13], wherein the inner peripheral surface of the rib is more inclined than the outer peripheral surface of the rib.
  • first side surface and the outer peripheral surface, and the second side surface and the outer peripheral surface are smoothly connected to each other, but this is not the only option.
  • first side surface and the outer peripheral surface or the second side surface and the outer peripheral surface may be smoothly connected.
  • the inner peripheral surface of the first rib is an inclined surface, but it is not limited to this.
  • the inner peripheral surface of the first rib may not be an inclined surface.
  • the inner peripheral surface of the first rib is an inclined surface, for example, at least one of the first side surface and the outer peripheral surface and the second side surface and the outer peripheral surface may not be smoothly connected.
  • the flange portion is provided with the first corner portion and the second corner portion, but is not limited to this.
  • the boundary between the first side surface and the outer peripheral surface may not be distinguishable, and the boundary between the second side surface and the outer peripheral surface may not be distinguishable.
  • the first rib has a top surface in the above embodiment, it is not limited to this.
  • the tip of the first rib may have a linear shape.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
PCT/JP2022/022362 2021-06-15 2022-06-01 鉛蓄電池及びその製造方法 Ceased WO2022264817A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023529768A JPWO2022264817A1 (https=) 2021-06-15 2022-06-01

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021099219 2021-06-15
JP2021-099219 2021-06-15

Publications (1)

Publication Number Publication Date
WO2022264817A1 true WO2022264817A1 (ja) 2022-12-22

Family

ID=84526393

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/022362 Ceased WO2022264817A1 (ja) 2021-06-15 2022-06-01 鉛蓄電池及びその製造方法

Country Status (2)

Country Link
JP (1) JPWO2022264817A1 (https=)
WO (1) WO2022264817A1 (https=)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6312852B1 (en) * 1998-02-26 2001-11-06 C&D Charter Holdings Inc. Battery cell cover with flexible positive post terminal
JP2005044678A (ja) * 2003-07-24 2005-02-17 Shin Kobe Electric Mach Co Ltd 制御弁式鉛蓄電池
JP2005078856A (ja) * 2003-08-28 2005-03-24 Yuasa Corp 鉛蓄電池の端子構造
JP2005190773A (ja) * 2003-12-25 2005-07-14 Japan Storage Battery Co Ltd 鉛蓄電池
JP2010177089A (ja) * 2009-01-30 2010-08-12 Furukawa Battery Co Ltd:The 鉛蓄電池
JP2014086375A (ja) * 2012-10-26 2014-05-12 Furukawa Battery Co Ltd:The 鉛蓄電池用蓋

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6312852B1 (en) * 1998-02-26 2001-11-06 C&D Charter Holdings Inc. Battery cell cover with flexible positive post terminal
JP2005044678A (ja) * 2003-07-24 2005-02-17 Shin Kobe Electric Mach Co Ltd 制御弁式鉛蓄電池
JP2005078856A (ja) * 2003-08-28 2005-03-24 Yuasa Corp 鉛蓄電池の端子構造
JP2005190773A (ja) * 2003-12-25 2005-07-14 Japan Storage Battery Co Ltd 鉛蓄電池
JP2010177089A (ja) * 2009-01-30 2010-08-12 Furukawa Battery Co Ltd:The 鉛蓄電池
JP2014086375A (ja) * 2012-10-26 2014-05-12 Furukawa Battery Co Ltd:The 鉛蓄電池用蓋

Also Published As

Publication number Publication date
JPWO2022264817A1 (https=) 2022-12-22

Similar Documents

Publication Publication Date Title
KR102763736B1 (ko) 이차 전지
CN100420085C (zh) 二次电池
EP2827399B1 (en) Rechargeable battery
US20130295445A1 (en) Secondary battery
CN101599553B (zh) 电池组
CN113853702A (zh) 二次电池
CN101383431B (zh) 罐型锂二次电池
JP6550848B2 (ja) 角形二次電池
US20190312253A1 (en) Square secondary battery and method of manufacturing same
KR20180027266A (ko) 이차전지
US7592096B2 (en) Lithium ion secondary battery
CN110998915B (zh) 圆筒形电池
US9287535B2 (en) Secondary battery and the fabrication method thereof
JP6269092B2 (ja) 蓄電素子
JP5394087B2 (ja) 鉛蓄電池
JP7103356B2 (ja) 蓄電素子
CN118841719A (zh) 圆柱形二次电池
JP5452151B2 (ja) 密閉型電池
KR20090130657A (ko) 이차 전지
JP7525551B2 (ja) 密閉型電池
WO2022264817A1 (ja) 鉛蓄電池及びその製造方法
JP7054838B2 (ja) 円筒形電池
JP6311323B2 (ja) 蓄電素子
JP2012079650A (ja) 二次電池
WO2019116914A1 (ja) 蓄電素子

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22824810

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023529768

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22824810

Country of ref document: EP

Kind code of ref document: A1