WO2018038143A1 - Cylindrical battery - Google Patents

Cylindrical battery Download PDF

Info

Publication number
WO2018038143A1
WO2018038143A1 PCT/JP2017/030069 JP2017030069W WO2018038143A1 WO 2018038143 A1 WO2018038143 A1 WO 2018038143A1 JP 2017030069 W JP2017030069 W JP 2017030069W WO 2018038143 A1 WO2018038143 A1 WO 2018038143A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
terminal plate
washer
cylindrical
section
Prior art date
Application number
PCT/JP2017/030069
Other languages
French (fr)
Japanese (ja)
Inventor
聡希 後藤
山崎　龍也
鈴木　拓也
國谷　繁之
Original Assignee
Fdk株式会社
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 Fdk株式会社 filed Critical Fdk株式会社
Publication of WO2018038143A1 publication Critical patent/WO2018038143A1/en

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
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button 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 of a single cell or a single battery
    • H01M50/147—Lids or covers
    • 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 of a single cell or a single battery
    • H01M50/183—Sealing members
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • 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

  • This invention relates to a cylindrical battery.
  • FIG. 1A is a vertical cross-sectional view when the extending direction of the cylindrical shaft 100 is the vertical (vertical) direction.
  • FIG. 1B is an enlarged view inside the circle 101 in FIG. 1A. The basic configuration and structure of the alkaline battery 1 will be described below with reference to FIGS. 1A and 1B.
  • the alkaline battery 1 includes a bottomed cylindrical metal battery can 2, a ring-shaped positive electrode mixture 3, a bottomed cylindrical separator 4 disposed inside the positive electrode mixture 3, and a zinc alloy.
  • the In this structure, the positive electrode mixture 3, the separator 4, and the negative electrode gel 5 form the power generation element of the alkaline dry battery 1 in the presence of the electrolytic solution.
  • the battery can 2 which is a battery case, functions as a positive electrode current collector by contacting the positive electrode mixture 3, and a convex positive electrode terminal 8 protruding outward is formed on the bottom surface.
  • the negative electrode terminal plate 10 is formed with a flat cylindrical side surface portion 14 that is hanged downward on the periphery of the disk-shaped bottom portion 11.
  • a circular bowl-shaped peripheral edge 13 is formed around the lower end of the side face 14, and is shaped like a flat cup having a flange as a whole.
  • the sealing gasket 7 has a cup shape in which an outer peripheral portion formed of a wall surface standing upwards around a disc having concentric concavities and convexities, and has a hollow cylindrical shape projecting from the upper and lower surfaces of the disc at the center of the partition wall.
  • the boss portion is formed.
  • the rod-shaped negative electrode current collector 6 inserted into the negative electrode gel 5 is inserted into the boss portion of the sealing gasket 7 in a press-fitted state, and the upper end is welded to the bottom surface of the bottom portion 11 of the negative electrode terminal plate 10 and fixed upright. .
  • the negative electrode terminal plate 10 and the sealing gasket 7 are configured to seal the opening of the battery can 2.
  • the outer periphery of the sealing gasket 7 is sandwiched between the inner surface of the open end of the battery can 2 and the edge of the peripheral edge 13 of the negative electrode terminal plate 10 from the outside of the battery can 2. Sealed by caulking.
  • the peripheral edge 13 of the negative electrode terminal plate 10 which was originally a hollow disk shape of the battery can 2, is bent obliquely downward from the direction of the axis 100 toward the outer side, It is deformed so as to be bent acutely upward. Further, the opening end of the battery can 2 is curled inward and bent inward, and the upper end of the outer peripheral portion of the sealing gasket 7 is also bent inward along the inner shape of the battery can 2.
  • the alkaline dry battery 1 functions as a power storage element with the above configuration and structure.
  • an outer package 9 made of a heat-shrinkable film is mounted around the battery can 2.
  • the opening edge of the battery can 2 that has been curled and the side surface part 14 of the negative electrode terminal plate 10 are close to each other.
  • a washer 20 made of a ring-shaped insulator is provided around the outer periphery of the side surface portion 14 of the negative electrode terminal plate 10.
  • FIG. 2A and 2B show the structure of the washer 20 in detail.
  • 2A is a plan view when the washer 20 is viewed from above
  • FIG. 2B is a cross-sectional view taken along the line aa in FIG. 2A.
  • the washer 20 has a shape in which a circular flange-shaped flange portion 22 is integrally provided on the upper end of a flat cylindrical body portion 21 whose both ends are open.
  • a hollow portion 23 is formed as a common inner surface of the hollow body portion 21 and the annular flange portion 22.
  • the washer 20 has the flange portion 22 facing upward and the hollow portion 23 is fitted to the outer periphery of the side surface portion 14 of the negative electrode terminal plate 10, so that the washer 20 is attached to the battery can 2. Fixed. Further, when the outer casing 9 of the alkaline dry battery 1 is heat-shrinked around the battery can 2 and is mounted, the peripheral edge of the upper surface 25 of the flange portion 22 of the washer 20 is pressed downward by the outer casing 9. Is fixed by the exterior body 9 in addition to the fitting with the side surface portion 14 of the negative electrode terminal plate 10.
  • the washer 20 has a function for preventing the electrolytic solution from being scattered with exhaust.
  • the body portion 21 of the washer 20 covers the side surface portion 14 of the negative electrode terminal plate 10 to reduce the speed at which the gas and electrolyte from the vent hole 12 are ejected when the explosion-proof safety mechanism is activated.
  • the device in which the alkaline battery 1 is incorporated is made difficult to be contaminated.
  • the normal exhaust path of the gas when the explosion-proof safety mechanism is activated is the body of the washer 20 that covers the side surface portion 14 of the negative electrode terminal plate 10 from the gas vent hole 12 as shown by the thick solid arrow 110 in FIG. 1B. 21 reaches the upper side of the alkaline dry battery 1 of the negative electrode terminal plate 10 via the inner surface of 21.
  • Patent Document 1 in addition to preventing a washer from being mounted poorly, when the explosion-proof safety mechanism is activated, electrolysis is performed when the pressure inside the battery is released between the washer and the negative terminal plate. It describes an alkaline battery in which the liquid is not sprayed out at once.
  • the washer 20 provided in the cylindrical battery such as the alkaline battery 1 prevents the electrolyte from splashing from the vent hole 12 provided in the negative terminal plate 10 when the explosion-proof safety mechanism operates.
  • the upper peripheral edge of the flange portion 22 of the washer 20 is covered with the exterior body 9 made of heat shrinkable film. There is no gas escape from the space 30 indicated by hatching.
  • the gas escapes to the space 30 along the path indicated by the thick dotted arrow 111 in FIG. 1B, and the gas fills the space 30 in an instant.
  • the pressure in the space 30 rises at a stretch. Then, the pressure is applied to the lower surface of the flange portion 22 of the washer 20, and the washer 20 is pushed upward.
  • the exterior body 9 is soft and easily deformed. Therefore, the force for pushing up the washer 20 cannot be suppressed, and as a result, the washer 20 falls off. In some cases, the washer 20 scatters vigorously.
  • the inner surface on the upper end side of the hollow portion of the washer has a polygonal shape, and the position of the side of the polygon is matched with the formation position of the gas vent hole, so that As for the exhaust from the normal exhaust path, the exhaust can be performed more smoothly.
  • the position of the washer is shifted after the washer is mounted on the side surface portion of the negative electrode terminal plate and before the exterior body is mounted.
  • an object of the present invention is to provide a cylindrical battery that can reliably prevent the washer from scattering even when the internal pressure of the battery can rises rapidly.
  • the present invention provides a power generating element housed in a bottomed cylindrical battery can also serving as a current collector for one electrode, and also serves as a terminal for the other electrode in the opening of the battery can.
  • the terminal plate includes a cylindrical side surface that hangs downward on the periphery of a disc-shaped bottom, a peripheral edge formed in a circular bowl shape at the lower edge of the side surface, and the inside and outside of the side surface.
  • the sealing gasket is sandwiched between the peripheral edge of the terminal plate and the inner surface of the open end of the battery can,
  • a washer in which a flange portion formed in a circular bowl shape is integrally formed at the upper end periphery of a flat cylindrical barrel portion whose upper and lower ends are open, and the barrel portion is attached to the outer peripheral surface of the side portion;
  • the flange portion covers the upper end of the open end of the battery can,
  • the flange portion is formed with a plurality of exhaust holes connecting the upper and lower surfaces,
  • a ventilation path is formed from the inside of the battery can to the lower surface of the flange portion through the vent hole.
  • the cylindrical battery is characterized by this.
  • the terminal plate is a negative electrode terminal plate
  • the washer is attached to the negative electrode terminal plate
  • the exhaust hole is formed in a planar shape not including a circle having a diameter of 0.5 mm. .
  • the scope of the present invention also includes an alkaline battery in which the battery can serves as a positive electrode current collector and the terminal plate serves as a negative terminal plate.
  • the present invention has a structure in which a dish-shaped terminal plate also serving as the other electrode is fitted to the opening of the battery can also serving as one electrode via a sealing gasket, and a gas vent hole is provided on the outer periphery of the terminal plate.
  • the present invention can be applied to the formed cylindrical battery.
  • a cylindrical alkaline dry battery is mentioned as a cylindrical battery which concerns on one Embodiment of this invention.
  • the basic structure of the cylindrical battery according to this embodiment is the same as that of the general alkaline battery 1 shown in FIG.
  • the cylindrical battery according to the present embodiment is different from the conventional cylindrical battery in the structure of the washer and the exhaust path when the internal pressure is increased, so that even if the internal pressure of the battery can rises explosively, the washer It has a high level of safety that can reliably prevent splashing.
  • FIG. 3A is a plan view of the washer 20a when viewed from above
  • FIG. 3B is a cross-sectional view taken along the line bb in FIG. 3A
  • the washer 20 a is a molded product made of an insulating resin such as polypropylene, and is formed integrally with a circular flange-shaped flange portion 22 at the upper end of the annular barrel portion 21 so as to be coaxial with the barrel portion 21.
  • the hollow portion 23 penetrates the body portion 21 and the flange portion 22 in the vertical direction.
  • holes 24a that connect the upper and lower surfaces (25-26) to the flange portion 22 are formed at a plurality of locations along the circumferential direction of the flange portion 22. .
  • radially rectangular holes 24a are formed at 12 equiangular intervals.
  • the rectangular hole 24a has a long side in the radial direction.
  • FIG. 4 shows a mounting state of the washer 20a in the alkaline battery 1a according to the embodiment.
  • FIG. 4 is an enlarged view of a region corresponding to the circle 101 shown in FIG. 1A.
  • the gas generated in the battery can 2 is guided to the outside of the body portion 21 through the vent hole 12 as shown by the thick arrow 112 in FIG. While following the path to the lower surface 26 of the flange portion 22. Since the flange portion 22 is formed with holes 24a that connect the upper and lower surfaces (25-26), the gas is exhausted from the holes 24a to the outside of the alkaline battery 1a. And since the hole 24a (henceforth the exhaust hole 24a) of the flange part 22 is formed in multiple places along the circumferential direction of the said flange part 22, the exhaust path of several systems is ensured reliably. As a result, even if one exhaust hole 24a is blocked by the contents of the alkaline battery 1a, the gas is exhausted to the outside of the alkaline battery 1a through the other exhaust hole 24a.
  • various washers 20a having different formation conditions of the exhaust holes 24a were produced.
  • the washer 20a produced here is as shown in FIG. 3A on the flange portion 22 of the washer 20 used in the commercially available LR6 type alkaline dry battery 1 (for example, the alkaline dry battery described in Non-Patent Document 1).
  • a rectangular exhaust hole 24a having a radial direction as a length direction and a direction perpendicular to the radial direction as a width direction is formed.
  • the alkaline battery 1 using the washer 20 was prepared as sample 1
  • the alkaline battery 1a using the washer 20a was prepared as samples 2 to 20.
  • Samples 2 to 20 differ in the length of the long side and the short side of the exhaust hole 24a formed in the washer 20a and the number of exhaust holes. In addition, 20 samples were prepared.
  • the charge test was performed using a total of four alkaline batteries consisting of one sample and three commercially available LR6 type alkaline batteries, with only the sample alkaline batteries 1, 1a in the direction of the positive and negative terminals reversed. This was performed by charging the sample in a so-called “four to one reverse” system in which four alkaline batteries were connected in series.
  • Table 1 below shows the results of the charge test for each sample.
  • width A is the length of the side in the width direction (direction perpendicular to the radial direction) of the above-described rectangular exhaust hole 24a
  • length B is the length of the side in the length direction (radial direction) described above. That's it.
  • the numerical aperture n is the number of the exhaust holes 24a. In each of the samples 2 to 20, the exhaust holes 24a are formed along the circumference of the flange portion 22 at equal angular intervals.
  • the defect occurrence number m is the number of the washers 20 and 20a dropped or scattered among the 20 individuals prepared for the samples 1 to 20.
  • Sample 1 using the washer 20 and Samples 2 to 20 in which the opening dimension (A, B) of the exhaust hole 24a in the washer 20a is different from the number n are prepared.
  • Sample 1 is an LR6 type alkaline dry battery provided as a product, and uses a washer 20 having no exhaust hole 24a in the flange 22.
  • the washer 20a of the produced sample 2 is the same as the washer 20 of the alkaline dry battery 1 except that the exhaust hole 24a is formed, and is not conscious of the ventilation path 112 described above. Nevertheless, the scattering prevention effect of the washer 20a could be confirmed.
  • samples 2 to 20 in samples 12 to 20 having a total area S of 4.0 mm 2 or more, the number of defects m is less than half of the total number of individuals, and samples 16 to 20 having a total area S of 6.0 mm 2 or more. No. 20 was able to completely prevent the washer 20a from scattering.
  • the washer 20a is a small part, and the area of the flange portion 22 where the exhaust hole 24a is formed is limited. Therefore, the maximum value of the opening area for one exhaust hole 24a is naturally determined. Further, the maximum number of exhaust holes 24a is limited.
  • the strength of the flange portion 22 may be reduced.
  • the flange portion 22 may be deformed or damaged when the exhaust hole 24a is formed by integral molding or punching. Therefore, the number of exhaust holes 24a and the opening area of one exhaust hole 24a may be set as appropriate in consideration of the strength required for the washer 20a, the manufacturing cost, the ease of manufacturing of the washer 20a, and the like.
  • the alkaline dry battery 1a according to the embodiment of the present invention is characterized in that a plurality of exhaust holes 24a are formed in the flange portion 22 of the washer 20a.
  • a washer 20a having an exhaust hole 24a formed in the flange portion 22 is mounted on the negative electrode terminal plate 10 side. Therefore, when the alkaline battery 1a is loaded into the battery box, the tip of the wire constituting the electrode terminal spring may enter the exhaust hole 24a.
  • the tip of the wire enters the exhaust hole 24a, there is a possibility that the alkaline dry battery 1a cannot be taken out from the electronic device or the washer 20a is detached. Alternatively, there is a possibility that the electrode terminal spring on the electronic device side may be damaged when the alkaline dry battery 1a is forcibly taken out while the wire is caught in the exhaust hole 24a. Therefore, it is more preferable to set the opening area of the exhaust hole 24a to a shape that does not allow this wire to enter.
  • the exhaust hole 24a has a planar shape that does not include a circle having a diameter of 0.5 mm. If formed, it is possible to prevent the wire of the electrode terminal spring from entering the exhaust hole 24a.
  • the exhaust hole 24a having a rectangular planar shape is formed in the flange portion 22 of the washer 20a.
  • the planar shape of each exhaust hole 24a is not limited to a rectangular shape.
  • FIG. 6A, FIG. 6B, and FIG. 6C show examples of washers 20b, 20c, and 20d having exhaust holes 24b, 24c, and 24d whose planar shapes are not rectangular.
  • 6A is a plan view when the washer 20b is viewed from above
  • FIG. 6B is a plan view when the washer 20c is viewed from above
  • FIG. 6C is a plan view when the washer 20d is viewed from above. .
  • a triangular exhaust hole 24b having an apex in the radial outward direction with the cylindrical shaft 100 side as a base is formed.
  • an elliptical exhaust hole 24c having a long axis in the radial direction is formed in the washer 20c shown in FIG. 6B.
  • an arc-shaped exhaust hole 24d having a predetermined width along the circumference of the flange portion 22 is formed in the washer 20d shown in FIG. 6C.
  • 1,1a Cylindrical battery (alkaline battery), 2 battery cans, 3 cathode mix, 4 Separator, 5 negative electrode gel, 6 Negative electrode current collector, 7 Sealing gasket, 8 Positive terminal, 9 exterior body, 10 negative terminal plate, 11

Abstract

This cylindrical battery 1a comprises a bottomed cylinder-shaped battery can 2 which serves as a current collector for one of the electrodes and which has an upper opening into which there is fitted, across a sealing gasket 7, a terminal plate 10 serving as a terminal for the other of the electrodes. The terminal plate is provided with a side surface section 14, which is formed into a cylindrical shape at the lower end peripheral rim of a disc-shaped bottom section 11, and a peripheral rim section 13, which is formed into a circular brim shape at the lower end peripheral rim of the side surface section 14. The terminal plate also is provided with a de-gassing hole 12 whereby the inside and the outside of the side surface section communicate. The sealing gasket is sandwiched by the peripheral rim section and the inner surface of the end portion of the battery can opening. A washer 20a which comprises a brim-shaped flange section 22 formed at the upper end peripheral rim of a hollow flat cylinder-shaped trunk section 21 is such that the trunk section is fitted onto the outer peripheral surface of the side surface section, and the flange section covers the top of the opening end portion of the battery can. Formed at a plurality of locations in the flange section are exhaust holes 24 whereby the upper and the lower surfaces thereof communicate, thereby forming venting routes, each extending from the interior of the battery can to the lower surface of the flange section through the de-gassing hole.

Description

円筒形電池Cylindrical battery
　この発明は円筒形電池に関する。 This invention relates to a cylindrical battery.
　円筒形電池の一例として、円筒形アルカリ乾電池を挙げる。図１Ａ及び図１Ｂは、円筒形アルカリ乾電池１の構造を示している。図１Ａは、円筒軸１００の延長方向を上下（縦）方向としたときの縦断面図である。そして図１Ｂは、図１Ａにおける円１０１内の拡大図である。以下に図１Ａ、図１Ｂを参照しつつアルカリ乾電池１の基本的な構成や構造について説明する。 An example of a cylindrical battery is a cylindrical alkaline battery. 1A and 1B show the structure of the cylindrical alkaline battery 1. FIG. 1A is a vertical cross-sectional view when the extending direction of the cylindrical shaft 100 is the vertical (vertical) direction. FIG. 1B is an enlarged view inside the circle 101 in FIG. 1A. The basic configuration and structure of the alkaline battery 1 will be described below with reference to FIGS. 1A and 1B.
　アルカリ乾電池１は、有底筒状の金属製電池缶２、環状に成形された正極合剤３、この正極合剤３の内側に配設された有底円筒状のセパレーター４、亜鉛合金を含んでセパレーター４の内側に充填される負極ゲル５、この負極ゲル５中に挿入された金属製の負極集電子６、金属製負極端子板１０、絶縁性の樹脂からなる封口ガスケット７などにより構成される。この構造において、正極合剤３、セパレーター４、負極ゲル５が、電解液の存在下でアルカリ乾電池１の発電要素を形成する。 The alkaline battery 1 includes a bottomed cylindrical metal battery can 2, a ring-shaped positive electrode mixture 3, a bottomed cylindrical separator 4 disposed inside the positive electrode mixture 3, and a zinc alloy. The negative electrode gel 5 filled inside the separator 4, a metal negative electrode current collector 6 inserted into the negative electrode gel 5, a metal negative electrode terminal plate 10, a sealing gasket 7 made of an insulating resin, and the like. The In this structure, the positive electrode mixture 3, the separator 4, and the negative electrode gel 5 form the power generation element of the alkaline dry battery 1 in the presence of the electrolytic solution.
　電池ケースである電池缶２は、正極合剤３に接触することで正極集電体として機能し、底面には外方に突出する凸状の正極端子８が形成されている。ここで電池缶２の底部側を下方として上下方向を規定すると、負極端子板１０は、円板状の底部１１の周縁に下方に短く垂設される扁平円筒状の側面部１４が形成され、その側面部１４の下端周囲には円形鍔状の周縁部１３が形成されて、総じてフランジを有する扁平なカップを伏せたような形状となっている。 The battery can 2, which is a battery case, functions as a positive electrode current collector by contacting the positive electrode mixture 3, and a convex positive electrode terminal 8 protruding outward is formed on the bottom surface. Here, when the vertical direction is defined with the bottom side of the battery can 2 as the lower side, the negative electrode terminal plate 10 is formed with a flat cylindrical side surface portion 14 that is hanged downward on the periphery of the disk-shaped bottom portion 11. A circular bowl-shaped peripheral edge 13 is formed around the lower end of the side face 14, and is shaped like a flat cup having a flange as a whole.
　封口ガスケット７は、同心円状に凹凸が形成された円盤の周囲に上方に立設する壁面からなる外周部が巡るカップ状で、隔壁の中心には当該円盤の上下両面側に突出する中空円筒状のボス部が形成されている。負極ゲル５中に挿入された棒状の負極集電子６は、この封口ガスケット７のボス部に圧入状態で挿通されつつ上端が負極端子板１０の底部１１下面に溶接されて立設固定されている。 The sealing gasket 7 has a cup shape in which an outer peripheral portion formed of a wall surface standing upwards around a disc having concentric concavities and convexities, and has a hollow cylindrical shape projecting from the upper and lower surfaces of the disc at the center of the partition wall. The boss portion is formed. The rod-shaped negative electrode current collector 6 inserted into the negative electrode gel 5 is inserted into the boss portion of the sealing gasket 7 in a press-fitted state, and the upper end is welded to the bottom surface of the bottom portion 11 of the negative electrode terminal plate 10 and fixed upright. .
　また負極端子板１０と封口ガスケット７は電池缶２の開口を封口するための構成である。電池缶２は、封口ガスケット７の上記外周部が電池缶２の開口端部の内面と負極端子板１０の周縁部１３の縁端との間に挟持された状態で電池缶２の外方からかしめられることで密閉される。 Further, the negative electrode terminal plate 10 and the sealing gasket 7 are configured to seal the opening of the battery can 2. In the battery can 2, the outer periphery of the sealing gasket 7 is sandwiched between the inner surface of the open end of the battery can 2 and the edge of the peripheral edge 13 of the negative electrode terminal plate 10 from the outside of the battery can 2. Sealed by caulking.
　なお図１に示したアルカリ乾電池１では、電池缶２の当初は中空円板状だった負極端子板１０の周縁部１３が軸１００方向から外側に向かって斜め下方に屈曲しつつ、縁端では上方に鋭角的に屈曲するように変形している。また電池缶２の開口端が内方にカール加工されて内方に屈曲し、封口ガスケット７の外周部の上端も電池缶２の内面形状に沿って内方に屈曲している。 In the alkaline dry battery 1 shown in FIG. 1, the peripheral edge 13 of the negative electrode terminal plate 10, which was originally a hollow disk shape of the battery can 2, is bent obliquely downward from the direction of the axis 100 toward the outer side, It is deformed so as to be bent acutely upward. Further, the opening end of the battery can 2 is curled inward and bent inward, and the upper end of the outer peripheral portion of the sealing gasket 7 is also bent inward along the inner shape of the battery can 2.
　アルカリ乾電池１は、以上の構成と構造によって蓄電素子として機能する。しかし製品として提供されているアルカリ乾電池１では、以下の非特許文献１にも記載されているように、電池缶２の周囲に熱収縮フィルムからなる外装体９が被装されている。また単３型や単４型などの比較的小さなサイズのアルカリ乾電池１では、電池缶２のカール加工された開口縁端と負極端子板１０の側面部１４との間が近接しているため、正極と負極間の短絡を防止するためにリング状の絶縁体からなるワッシャー２０が負極端子板１０の側面部１４の外周に環装されている。 The alkaline dry battery 1 functions as a power storage element with the above configuration and structure. However, in the alkaline dry battery 1 provided as a product, as described in Non-Patent Document 1 below, an outer package 9 made of a heat-shrinkable film is mounted around the battery can 2. Further, in the alkaline dry battery 1 having a relatively small size such as AA type or AAA type, the opening edge of the battery can 2 that has been curled and the side surface part 14 of the negative electrode terminal plate 10 are close to each other. In order to prevent a short circuit between the positive electrode and the negative electrode, a washer 20 made of a ring-shaped insulator is provided around the outer periphery of the side surface portion 14 of the negative electrode terminal plate 10.
　図２Ａ、図２Ｂにワッシャー２０の構造を具体的に示した。図２Ａは、当該ワッシャー２０を上方から見たときの平面図であり、図２Ｂは図２Ａにおけるａ－ａ矢視断面図である。ワッシャー２０は、両端が開口する扁平円筒状の胴部２１の上端に円形鍔状のフランジ部２２が一体的に設けられた形状である。そして中空の胴部２１と円環状のフランジ部２２の共通の内面とした中空部２３が形成されている。 2A and 2B show the structure of the washer 20 in detail. 2A is a plan view when the washer 20 is viewed from above, and FIG. 2B is a cross-sectional view taken along the line aa in FIG. 2A. The washer 20 has a shape in which a circular flange-shaped flange portion 22 is integrally provided on the upper end of a flat cylindrical body portion 21 whose both ends are open. A hollow portion 23 is formed as a common inner surface of the hollow body portion 21 and the annular flange portion 22.
　そして図１Ｂを参照すれば、ワッシャー２０は、フランジ部２２を上方に向けつつ、中空部２３を負極端子板１０の側面部１４の外周に嵌め込むことで、ワッシャー２０が電池缶２に対して固定される。また、アルカリ乾電池１の外装体９を電池缶２の周囲に熱収縮させて被装する際、ワッシャー２０におけるフランジ部２２の上面２５の周縁が当該外装体９によって下方に押さえつけられるため、ワッシャー２０は、負極端子板１０の側面部１４との嵌め合いに加え、この外装体９によっても固定されている。 Referring to FIG. 1B, the washer 20 has the flange portion 22 facing upward and the hollow portion 23 is fitted to the outer periphery of the side surface portion 14 of the negative electrode terminal plate 10, so that the washer 20 is attached to the battery can 2. Fixed. Further, when the outer casing 9 of the alkaline dry battery 1 is heat-shrinked around the battery can 2 and is mounted, the peripheral edge of the upper surface 25 of the flange portion 22 of the washer 20 is pressed downward by the outer casing 9. Is fixed by the exterior body 9 in addition to the fitting with the side surface portion 14 of the negative electrode terminal plate 10.
　ところで、封口ガスケット７における円盤領域には、部分的に肉薄となっている薄肉部が形成されており、アルカリ乾電池１内部におけるガスの発生などにより内圧が上昇すると、その薄肉部が先行破断するようになっている。そして負極端子板１０の側面部１４には、電池缶２の内外を連絡するガス抜き孔１２が形成されている。それによって、封口ガスケット７の薄肉部が破断した際、アルカリ乾電池１内部のガスがこのガス抜き孔１２から排気され、内圧が開放されるようになっている。すなわち、封口ガスケット７の薄肉部と負極端子板１０のガス抜き孔１２とによって、アルカリ乾電池１の破裂を防止する防爆安全機構が構成されている。 By the way, a thin portion that is partially thin is formed in the disk region of the sealing gasket 7, and when the internal pressure rises due to the generation of gas inside the alkaline dry battery 1, the thin portion seems to break ahead. It has become. A gas vent 12 that communicates the inside and outside of the battery can 2 is formed in the side surface portion 14 of the negative electrode terminal plate 10. As a result, when the thin portion of the sealing gasket 7 is broken, the gas inside the alkaline battery 1 is exhausted from the vent hole 12 so that the internal pressure is released. That is, an explosion-proof safety mechanism for preventing the alkaline battery 1 from being ruptured is constituted by the thin portion of the sealing gasket 7 and the gas vent hole 12 of the negative electrode terminal plate 10.
　また、単３型や単４型などの比較的小さなサイズのアルカリ乾電池１では、容積が小さいことから少量のガスでも内圧が大きく上昇し、そのガス抜き孔１２から漏出した電解液がアルカリ乾電池１の周囲に飛散する可能性がある。そのため上記のワッシャー２０は、排気に伴って電解液が飛散することを防止するための機能も担っている。 Further, in the alkaline dry battery 1 having a relatively small size such as AA type or AAA type, since the volume is small, the internal pressure greatly increases even with a small amount of gas, and the electrolyte leaked from the vent hole 12 is the alkaline dry battery 1. There is a possibility of splashing around. Therefore, the washer 20 has a function for preventing the electrolytic solution from being scattered with exhaust.
　具体的には、ワッシャー２０の胴部２１が負極端子板１０の側面部１４を覆うことで、防爆安全機構が作動したときに、ガス抜き孔１２からのガスや電解液が噴出する速度を減速させて、アルカリ乾電池１が組み込まれた機器が汚染されにくいようにしている。そして防爆安全機構が作動したときのガスの通常の排気経路は、図１Ｂに太い実線矢印１１０で示したように、ガス抜き孔１２から負極端子板１０の側面部１４を覆うワッシャー２０の胴部２１の内面を経由して負極端子板１０のアルカリ乾電池１の上方に至る。 Specifically, the body portion 21 of the washer 20 covers the side surface portion 14 of the negative electrode terminal plate 10 to reduce the speed at which the gas and electrolyte from the vent hole 12 are ejected when the explosion-proof safety mechanism is activated. Thus, the device in which the alkaline battery 1 is incorporated is made difficult to be contaminated. The normal exhaust path of the gas when the explosion-proof safety mechanism is activated is the body of the washer 20 that covers the side surface portion 14 of the negative electrode terminal plate 10 from the gas vent hole 12 as shown by the thick solid arrow 110 in FIG. 1B. 21 reaches the upper side of the alkaline dry battery 1 of the negative electrode terminal plate 10 via the inner surface of 21.
　なお以下の特許文献１には、ワッシャーの装着不良を防止するとともに、防爆安全機構が作動した際には、ワッシャーと負極端子板との間を通って電池内部の圧力が開放される際に電解液がスプレー状に一気に噴出しないようにしたアルカリ乾電池について記載されている。 In Patent Document 1 below, in addition to preventing a washer from being mounted poorly, when the explosion-proof safety mechanism is activated, electrolysis is performed when the pressure inside the battery is released between the washer and the negative terminal plate. It describes an alkaline battery in which the liquid is not sprayed out at once.
特開２００８－２８２６０１号公報JP 2008-282601 A
　アルカリ乾電池１などの円筒形電池が備えるワッシャー２０は、防爆安全機構が動作した際に、負極端子板１０に設けられたガス抜き孔１２から電解液が飛散するのを防止する。しかし、従来の円筒形電池では、図１Ａ、図１Ｂに示したように、ワッシャー２０におけるフランジ部２２の上面周縁が熱収縮フィルムによる外装体９に覆われていることから、図１Ｂにて縦縞のハッチングで示した空間３０からガスの逃げ場がない状態となっている。 The washer 20 provided in the cylindrical battery such as the alkaline battery 1 prevents the electrolyte from splashing from the vent hole 12 provided in the negative terminal plate 10 when the explosion-proof safety mechanism operates. However, in the conventional cylindrical battery, as shown in FIG. 1A and FIG. 1B, the upper peripheral edge of the flange portion 22 of the washer 20 is covered with the exterior body 9 made of heat shrinkable film. There is no gas escape from the space 30 indicated by hatching.
　そして何らかの原因で電池缶２内部にてガスが爆発的に発生すると、ガスが図１Ｂに太い点線矢印１１１で示した経路で上記空間３０に逃げ、このガスが一瞬にして当該空間３０に充満して当該空間３０内の圧力が一気に上昇する。そしてその圧力がワッシャー２０のフランジ部２２の下面に加わり、ワッシャー２０を上方に押し上げようとする。 If the gas is explosively generated inside the battery can 2 for some reason, the gas escapes to the space 30 along the path indicated by the thick dotted arrow 111 in FIG. 1B, and the gas fills the space 30 in an instant. Thus, the pressure in the space 30 rises at a stretch. Then, the pressure is applied to the lower surface of the flange portion 22 of the washer 20, and the washer 20 is pushed upward.
　外装体９は、金属製の電池缶２とは異なり、柔らかく変形しやすいため、ワッシャー２０を押し上げようとする力を抑えきれず、結果として、ワッシャー２０が脱落する。場合によってはワッシャー２０が勢いよく飛散する。 Unlike the metal battery can 2, the exterior body 9 is soft and easily deformed. Therefore, the force for pushing up the washer 20 cannot be suppressed, and as a result, the washer 20 falls off. In some cases, the washer 20 scatters vigorously.
　確かに、上記特許文献１に記載のアルカリ乾電池ではワッシャーの中空部の上端側の内面が多角形状になっており、その多角形の辺の位置をガス抜き孔の形成位置に合わせることで、上述した通常の排気経路からの排気についてはより円滑に排気できるようになっている。しかしながらアルカリ乾電池の組み立て工程において、ワッシャーを負極端子板の側面部に環装した後に外装体を被装するまでの間にワッシャーの位置がずれる可能性もある。 Certainly, in the alkaline dry battery described in Patent Document 1, the inner surface on the upper end side of the hollow portion of the washer has a polygonal shape, and the position of the side of the polygon is matched with the formation position of the gas vent hole, so that As for the exhaust from the normal exhaust path, the exhaust can be performed more smoothly. However, in the process of assembling the alkaline battery, there is a possibility that the position of the washer is shifted after the washer is mounted on the side surface portion of the negative electrode terminal plate and before the exterior body is mounted.
　そこで本発明は、電池缶の内圧が急激に上昇してもワッシャーの飛散を確実に防止できる円筒形電池を提供することを目的としている。 Therefore, an object of the present invention is to provide a cylindrical battery that can reliably prevent the washer from scattering even when the internal pressure of the battery can rises rapidly.
　上記目的を達成するための本発明は、一方の電極の集電体を兼ねる有底円筒状の電池缶内に発電要素が収納されるとともに、当該電池缶の開口に他方の電極の端子を兼ねる端子板が絶縁性の封口ガスケットを介して嵌着されることで当該電池缶が密閉されてなる円筒形電池であって、
　前記電池缶の開口を上方として、
　前記端子板は、円板状の底部の周縁に下方に垂設される筒状の側面部と、当該側面部の下端周縁に円形鍔状に形成された周縁部と、前記側面部の内外を連絡するガス抜き孔とを備え、
　前記封口ガスケットは、前記端子板の前記周縁部と前記電池缶の開口端部の内面とに狭持され、
　上下両端が開口する扁平円筒状の胴部の上端周縁に円形鍔状に形成されたフランジ部が一体的に形成されたワッシャーを備え、前記胴部が前記側面部の外周面に装着され、前記フランジ部が前記電池缶の開口端部の上方を覆い、
　前記フランジ部には上下両面を連絡する排気孔が複数箇所に形成され、
　前記電池缶の内方から前記ガス抜き孔を経て前記フランジ部の下面に至る通気経路が形成されている、
　ことを特徴とする円筒形電池としている。 In order to achieve the above object, the present invention provides a power generating element housed in a bottomed cylindrical battery can also serving as a current collector for one electrode, and also serves as a terminal for the other electrode in the opening of the battery can. A cylindrical battery in which the battery can is sealed by fitting a terminal plate through an insulating sealing gasket,
With the opening of the battery can upward,
The terminal plate includes a cylindrical side surface that hangs downward on the periphery of a disc-shaped bottom, a peripheral edge formed in a circular bowl shape at the lower edge of the side surface, and the inside and outside of the side surface. With vent holes to communicate,
The sealing gasket is sandwiched between the peripheral edge of the terminal plate and the inner surface of the open end of the battery can,
A washer in which a flange portion formed in a circular bowl shape is integrally formed at the upper end periphery of a flat cylindrical barrel portion whose upper and lower ends are open, and the barrel portion is attached to the outer peripheral surface of the side portion; The flange portion covers the upper end of the open end of the battery can,
The flange portion is formed with a plurality of exhaust holes connecting the upper and lower surfaces,
A ventilation path is formed from the inside of the battery can to the lower surface of the flange portion through the vent hole.
The cylindrical battery is characterized by this.
　また前記端子板が負極端子板で、前記ワッシャーが当該負極端子板に装着されているとともに、前記排気孔が直径０．５ｍｍの円を包含しない平面形状に形成されていることとすればより好ましい。 More preferably, the terminal plate is a negative electrode terminal plate, the washer is attached to the negative electrode terminal plate, and the exhaust hole is formed in a planar shape not including a circle having a diameter of 0.5 mm. .
　そして本発明の範囲には、前記電池缶が正極集電体を兼ねる電池ケースで、前記端子板が負極端子板となるアルカリ乾電池も含まれている。 The scope of the present invention also includes an alkaline battery in which the battery can serves as a positive electrode current collector and the terminal plate serves as a negative terminal plate.
　本発明の円筒形電池によれば、電池缶の内圧が急激に上昇してもワッシャーの飛散を確実に防止することができる。なおその他の効果については以下の記載で明らかにする。 According to the cylindrical battery of the present invention, it is possible to reliably prevent the washer from scattering even if the internal pressure of the battery can suddenly increases. Other effects will be clarified in the following description.
円筒形電池の一例であるアルカリ乾電池の構造を示す図である。It is a figure which shows the structure of the alkaline dry battery which is an example of a cylindrical battery. 円筒形電池の一例であるアルカリ乾電池の構造を示す図である。It is a figure which shows the structure of the alkaline dry battery which is an example of a cylindrical battery. 上記アルカリ乾電池の負極端子板に装着されているワッシャーの概略図である。It is the schematic of the washer with which the negative electrode terminal board of the said alkaline battery was mounted | worn. 上記アルカリ乾電池の負極端子板に装着されているワッシャーの概略図である。It is the schematic of the washer with which the negative electrode terminal board of the said alkaline battery was mounted | worn. 本発明の一実施形態に係る円筒形電池が備えるワッシャーの概略図である。It is the schematic of the washer with which the cylindrical battery which concerns on one Embodiment of this invention is provided. 本発明の一実施形態に係る円筒形電池が備えるワッシャーの概略図である。It is the schematic of the washer with which the cylindrical battery which concerns on one Embodiment of this invention is provided. 上記実施形態に係る円筒形電池における排気経路を示す図である。It is a figure which shows the exhaust path in the cylindrical battery which concerns on the said embodiment. 上記実施形態に係る円筒形電池が備えるワッシャーに形成されている排気孔の好適例を示す図である。It is a figure which shows the suitable example of the exhaust hole currently formed in the washer with which the cylindrical battery which concerns on the said embodiment is provided. 本発明の一実施形態の円筒形電池が備えるワッシャーのその他の例を示す図である。It is a figure which shows the other example of the washer with which the cylindrical battery of one Embodiment of this invention is provided. 本発明の一実施形態の円筒形電池が備えるワッシャーのその他の例を示す図である。It is a figure which shows the other example of the washer with which the cylindrical battery of one Embodiment of this invention is provided. 本発明の一実施形態の円筒形電池が備えるワッシャーのその他の例を示す図である。It is a figure which shows the other example of the washer with which the cylindrical battery of one Embodiment of this invention is provided.
　関連出願の相互参照
　この出願は、２０１６年８月２３日に出願された日本特許出願、特願２０１６－１６２５０９に基づく優先権を主張し、その内容を援用する。 This application claims priority based on Japanese Patent Application No. 2016-162509 filed on Aug. 23, 2016, the contents of which are incorporated herein by reference.
　本発明は、一方の電極を兼ねた電池缶の開口に、他方の電極を兼ねる皿状の端子板が封口ガスケットを介して嵌着された構造を有するとともに、端子板の外周にガス抜き孔が形成された円筒形電池に適用することができる。以下では、本発明の一実施形態に係る円筒形電池として円筒形のアルカリ乾電池を挙げる。本実施形態に係る円筒形電池の基本的な構造は、図１に示した一般的なアルカリ乾電池１と同様である。しかし本実施形態に係る円筒形電池は、ワッシャーの構造、および内圧上昇時の排気経路が従来の円筒形電池とは異なっており、それによって電池缶の内圧が爆発的に上昇したとしても、ワッシャーの飛散を確実に防止できる高い安全性を備えている。 The present invention has a structure in which a dish-shaped terminal plate also serving as the other electrode is fitted to the opening of the battery can also serving as one electrode via a sealing gasket, and a gas vent hole is provided on the outer periphery of the terminal plate. The present invention can be applied to the formed cylindrical battery. Below, a cylindrical alkaline dry battery is mentioned as a cylindrical battery which concerns on one Embodiment of this invention. The basic structure of the cylindrical battery according to this embodiment is the same as that of the general alkaline battery 1 shown in FIG. However, the cylindrical battery according to the present embodiment is different from the conventional cylindrical battery in the structure of the washer and the exhaust path when the internal pressure is increased, so that even if the internal pressure of the battery can rises explosively, the washer It has a high level of safety that can reliably prevent splashing.
＝＝＝ワッシャーの構造と作用＝＝＝
　図３Ａ、図３Ｂに、本発明の一実施形態に係る円筒形電池１ａ（以下、アルカリ乾電池１ａ）に装着されているワッシャー２０ａの概略構造を示した。図３Ａは、当該ワッシャー２０ａを上方から見たときの平面図であり、図３Ｂは図３Ａにおけるｂ－ｂ矢視断面図である。ワッシャー２０ａは、ポリプロピレンなどの絶縁性樹脂からなる成型品であり、環状の胴部２１の上端に円形鍔状のフランジ部２２が当該胴部２１と同軸となるように一体的に形成されており、中空部２３が胴部２１とフランジ部２２を上下方向に貫通している。 === Washer structure and action ===
3A and 3B show a schematic structure of a washer 20a attached to a cylindrical battery 1a (hereinafter, alkaline dry battery 1a) according to an embodiment of the present invention. 3A is a plan view of the washer 20a when viewed from above, and FIG. 3B is a cross-sectional view taken along the line bb in FIG. 3A. The washer 20 a is a molded product made of an insulating resin such as polypropylene, and is formed integrally with a circular flange-shaped flange portion 22 at the upper end of the annular barrel portion 21 so as to be coaxial with the barrel portion 21. The hollow portion 23 penetrates the body portion 21 and the flange portion 22 in the vertical direction.
　そして、ここまでのワッシャー２０ａの構造は、図２Ａ、図２Ｂに示したワッシャー２０と同様である。しかし実施形態に係るアルカリ乾電池１ａが備えるワッシャー２０ａには、フランジ部２２に上下両面（２５－２６）を連絡する孔２４ａが当該フランジ部２２の円周方向に沿って複数箇所に形成されている。この例では放射状に矩形の孔２４ａが等角度間隔で１２カ所に形成されている。また矩形の孔２４ａは放射方向を長辺としている。なお、これらの孔２４ａはワッシャー２０ａと同時に一体成形されたものであってもよいし、フランジ部２２に孔２４ａがないワッシャーを作製した後、フランジ部２２に孔２４ａを抜き型などによって形成してもよい。 The structure of the washer 20a so far is the same as that of the washer 20 shown in FIGS. 2A and 2B. However, in the washer 20a included in the alkaline battery 1a according to the embodiment, holes 24a that connect the upper and lower surfaces (25-26) to the flange portion 22 are formed at a plurality of locations along the circumferential direction of the flange portion 22. . In this example, radially rectangular holes 24a are formed at 12 equiangular intervals. The rectangular hole 24a has a long side in the radial direction. These holes 24a may be integrally formed at the same time as the washer 20a, or after a washer having no holes 24a in the flange portion 22 is formed, the holes 24a are formed in the flange portion 22 by a die or the like. May be.
　つぎに実施形態に係るアルカリ乾電池１ａにおけるワッシャー２０ａの装着状態とワッシャー２０ａの機能について説明する。図４に実施形態に係るアルカリ乾電池１ａにおけるワッシャー２０ａの装着状態を示した。なお図４は、図１Ａに示した円１０１内に対応する領域を拡大した図である。 Next, the mounting state of the washer 20a and the function of the washer 20a in the alkaline battery 1a according to the embodiment will be described. FIG. 4 shows a mounting state of the washer 20a in the alkaline battery 1a according to the embodiment. FIG. 4 is an enlarged view of a region corresponding to the circle 101 shown in FIG. 1A.
　アルカリ乾電池１ａの防爆安全機構が作動すると、図４中にて太線の矢印１１２で示したように、電池缶２内で発生したガスは、ガス抜き孔１２から胴部２１の外方に案内されつつフランジ部２２の下面２６に至る経路を辿る。フランジ部２２には上下両面（２５－２６）を連絡する孔２４ａが形成されているため、ガスはこの孔２４ａからアルカリ乾電池１ａの外方に排気される。そしてフランジ部２２の孔２４ａ（以下、排気孔２４ａとも言う）は、当該フランジ部２２の円周方向に沿って複数箇所に形成されているため、確実に複数系統の排気経路が確保される。それによって一つの排気孔２４ａがアルカリ乾電池１ａの内容物によって閉塞されたとしても、他の排気孔２４ａを介してガスがアルカリ乾電池１ａの外方に排気される。 When the explosion-proof safety mechanism of the alkaline battery 1a is activated, the gas generated in the battery can 2 is guided to the outside of the body portion 21 through the vent hole 12 as shown by the thick arrow 112 in FIG. While following the path to the lower surface 26 of the flange portion 22. Since the flange portion 22 is formed with holes 24a that connect the upper and lower surfaces (25-26), the gas is exhausted from the holes 24a to the outside of the alkaline battery 1a. And since the hole 24a (henceforth the exhaust hole 24a) of the flange part 22 is formed in multiple places along the circumferential direction of the said flange part 22, the exhaust path of several systems is ensured reliably. As a result, even if one exhaust hole 24a is blocked by the contents of the alkaline battery 1a, the gas is exhausted to the outside of the alkaline battery 1a through the other exhaust hole 24a.
　また外装体９が排気孔２４ａの上面を塞いでいたとしても、フランジ部２２の下面２６にまで案内されたガスは優先的に排気孔２４ａを介して外方に向かう。そのため、外装体９における排気孔２４ａの直上にある領域が上方にめくれ、排気経路が形成される。しかも排気孔２４ａから排気されたガスは、その直上の外装体９の内面に当たってフランジ部２２を下方に押さえつける方向に流れるため、フランジ部２２が飛散する可能性をさらに低いものとする。 Even if the exterior body 9 blocks the upper surface of the exhaust hole 24a, the gas guided to the lower surface 26 of the flange portion 22 preferentially travels outward through the exhaust hole 24a. Therefore, a region of the exterior body 9 immediately above the exhaust hole 24a is turned upward to form an exhaust path. In addition, since the gas exhausted from the exhaust hole 24a hits the inner surface of the exterior body 9 immediately above it and flows in a direction to press the flange portion 22 downward, the possibility that the flange portion 22 is scattered is further reduced.
＝＝＝排気性能＝＝＝＝
　上述したように、本実施形態に係るアルカリ乾電池１ａでは、ワッシャー２０ａのフランジ部２２に上下両面（２５－２６）を連絡する排気孔２４ａが形成されて、アルカリ乾電池１ａの防爆安全機構が作動した際には負極端子板１０に形成されたガス抜き孔１２と当該排気孔２４ａを介して確実にアルカリ乾電池１ａ内の圧力を開放することができる。 === Exhaust performance ====
As described above, in the alkaline dry battery 1a according to the present embodiment, the exhaust hole 24a connecting the upper and lower surfaces (25-26) is formed in the flange portion 22 of the washer 20a, and the explosion-proof safety mechanism of the alkaline dry battery 1a is activated. In this case, the pressure in the alkaline battery 1a can be surely released through the gas vent hole 12 formed in the negative terminal plate 10 and the exhaust hole 24a.
　そこで実施形態に係るアルカリ乾電池１ａの排気性能を確認するために、排気孔２４ａの形成条件が異なる各種ワッシャー２０ａを作製した。ここで作製したワッシャー２０ａは、市販のＬＲ６型のアルカリ乾電池１（例えば、上記非特許文献１に記載のアルカリ乾電池）に用いられているワッシャー２０のフランジ部２２に、図３Ａに示したような放射方向を長さ方向、放射方向と直交する方向を幅方向とした矩形の排気孔２４ａを形成したものであるが、矩形の長さ及び幅のサイズ、および開口数が複数種類ある（表１参照）。 Therefore, in order to confirm the exhaust performance of the alkaline dry battery 1a according to the embodiment, various washers 20a having different formation conditions of the exhaust holes 24a were produced. The washer 20a produced here is as shown in FIG. 3A on the flange portion 22 of the washer 20 used in the commercially available LR6 type alkaline dry battery 1 (for example, the alkaline dry battery described in Non-Patent Document 1). A rectangular exhaust hole 24a having a radial direction as a length direction and a direction perpendicular to the radial direction as a width direction is formed. There are a plurality of types of rectangular length and width, and numerical apertures (Table 1). reference).
　そして、ワッシャー２０が用いられているアルカリ乾電池１をサンプル１として作成し、ワッシャー２０ａが用いられているアルカリ乾電池１ａをサンプル２～２０として作製した。サンプル２～２０は、ワッシャー２０ａに形成されている排気孔２４ａの長辺と短辺の長さ、および排気孔の数が異なる。また各サンプルを２０個ずつ用意した。 Then, the alkaline battery 1 using the washer 20 was prepared as sample 1, and the alkaline battery 1a using the washer 20a was prepared as samples 2 to 20. Samples 2 to 20 differ in the length of the long side and the short side of the exhaust hole 24a formed in the washer 20a and the number of exhaust holes. In addition, 20 samples were prepared.
　そして各サンプルの全個体に対して充電試験を行い、強制的に電池缶内にガスを発生させて防爆安全機構を作動させ、サンプルごとにワッシャー２０、２０ａが脱落した個体数を数えた。充電試験は、１個のサンプルと３個の市販のＬＲ６型アルカリ乾電池からなる合計４個のアルカリ乾電池を用い、サンプルのアルカリ乾電池１、１ａのみ、正負の端子の向きを逆にした状態でその４本のアルカリ乾電池を直列に接続する、所謂「４直１逆」の方式でサンプルを充電状態にすることで行った。 Then, a charge test was performed on all individuals of each sample, and the explosion-proof safety mechanism was operated by forcibly generating gas in the battery can, and the number of individuals in which the washers 20 and 20a were dropped was counted for each sample. The charge test was performed using a total of four alkaline batteries consisting of one sample and three commercially available LR6 type alkaline batteries, with only the sample alkaline batteries 1, 1a in the direction of the positive and negative terminals reversed. This was performed by charging the sample in a so-called “four to one reverse” system in which four alkaline batteries were connected in series.
　以下の表１に各サンプルに対する充電試験の結果を示した。 Table 1 below shows the results of the charge test for each sample.
Figure JPOXMLDOC01-appb-T000001
 　表１において、幅Ａは矩形の上述した排気孔２４ａの幅方向（放射方向と直交する方向）の辺の長さであり、長さＢは上述した長さ方向（放射方向）の辺の長さである。そして開口数ｎは排気孔２４ａの数であり、各サンプル２～２０では、各排気孔２４ａが等角度間隔でフランジ部２２の円周に沿って形成されている。
Figure JPOXMLDOC01-appb-T000001
 In Table 1, width A is the length of the side in the width direction (direction perpendicular to the radial direction) of the above-described rectangular exhaust hole 24a, and length B is the length of the side in the length direction (radial direction) described above. That's it. The numerical aperture n is the number of the exhaust holes 24a. In each of the samples 2 to 20, the exhaust holes 24a are formed along the circumference of the flange portion 22 at equal angular intervals.
　総面積Ｓは一つの個体に形成されている排気孔２４ａの開口面積の合計でありＳ＝Ａ×Ｂ×ｎの式から求められる。不良発生数ｍは、各サンプル１～２０について用意した２０個の個体のうち、ワッシャー２０、２０ａが脱落あるいは飛散した個数である。そしてここでは、ワッシャー２０を用いたサンプル１と、ワッシャー２０ａにおける排気孔２４ａの開口寸法（Ａ、Ｂ）と数ｎが異なるサンプル２～２０を用意した。なおサンプル１は製品として提供されているＬＲ６型のアルカリ乾電池であり、フランジ部２２に排気孔２４ａがないワッシャー２０を用いたものである。 The total area S is the total opening area of the exhaust holes 24a formed in one individual, and is obtained from the formula S = A × B × n. The defect occurrence number m is the number of the washers 20 and 20a dropped or scattered among the 20 individuals prepared for the samples 1 to 20. Here, Sample 1 using the washer 20 and Samples 2 to 20 in which the opening dimension (A, B) of the exhaust hole 24a in the washer 20a is different from the number n are prepared. Sample 1 is an LR6 type alkaline dry battery provided as a product, and uses a washer 20 having no exhaust hole 24a in the flange 22.
　表１に示したように、サンプル２は幅Ａ＝０．１ｍｍ、長さＢ＝１．０ｍｍのきわめて細くて開口面積が小さな排気孔２４ａが形成されたワッシャー２０ａが装着されており、総面積Ｓもわずか１．０ｍｍ２である。それでもアルカリ乾電池１であるサンプル１に対してワッシャー２０ａが脱落しなかった個体が存在することから、ガス抜き孔１２からフランジ部２２の下面２６にいたる上記の通気経路１１２と複数の排気孔２４ａをフランジ部２２に備えたワッシャー２０ａとによって、ワッシャー２０ａの飛散防止効果が得られることが確認できた。しかも作製したサンプル２のワッシャー２０ａは、排気孔２４ａが形成されている以外は、アルカリ乾電池１のワッシャー２０と同じであり、上記の通気経路１１２を意識して設けているわけではない。それにもかかわらず、ワッシャー２０ａの飛散防止効果を確認することができた。そしてサンプル２～２０の内、総面積Ｓが４．０ｍｍ２以上のサンプル１２～２０では、不良発生数ｍは全個体数の半数以下となり、総面積Ｓが６．０ｍｍ２以上のサンプル１６～２０では、完全にワッシャー２０ａの飛散を防止することができた。 As shown in Table 1, the sample 2 is provided with a washer 20a having a very small exhaust hole 24a having a width A = 0.1 mm and a length B = 1.0 mm and having a small opening area. S is also only 1.0 mm 2 . Nevertheless, since there is an individual in which the washer 20a has not fallen off with respect to the sample 1 which is the alkaline battery 1, the air passage 112 and the plurality of exhaust holes 24a from the vent hole 12 to the lower surface 26 of the flange portion 22 are provided. It was confirmed that the washer 20a was able to prevent scattering by the washer 20a provided in the flange portion 22. In addition, the washer 20a of the produced sample 2 is the same as the washer 20 of the alkaline dry battery 1 except that the exhaust hole 24a is formed, and is not conscious of the ventilation path 112 described above. Nevertheless, the scattering prevention effect of the washer 20a could be confirmed. Among samples 2 to 20, in samples 12 to 20 having a total area S of 4.0 mm 2 or more, the number of defects m is less than half of the total number of individuals, and samples 16 to 20 having a total area S of 6.0 mm 2 or more. No. 20 was able to completely prevent the washer 20a from scattering.
　なおワッシャー２０ａは小さな部品であり、排気孔２４ａが形成されるフランジ部２２の面積は限られている。そのため一つの排気孔２４ａについての開口面積の最大値は自ずと決定する。また排気孔２４ａの最大数も限られる。 The washer 20a is a small part, and the area of the flange portion 22 where the exhaust hole 24a is formed is limited. Therefore, the maximum value of the opening area for one exhaust hole 24a is naturally determined. Further, the maximum number of exhaust holes 24a is limited.
　排気孔２４ａを過多に形成すればフランジ部２２の強度が低下する可能性がある。あるいは一体成形や抜き型で排気孔２４ａを形成する際にフランジ部２２が変形したり破損したりする可能性もある。したがって排気孔２４ａの数や一つの排気孔２４ａについての開口面積については、ワッシャー２０ａに求められる強度、あるいは製造コストやワッシャー２０ａの製造容易性などを考慮して適宜に設定すればよい。 If the exhaust holes 24a are excessively formed, the strength of the flange portion 22 may be reduced. Alternatively, the flange portion 22 may be deformed or damaged when the exhaust hole 24a is formed by integral molding or punching. Therefore, the number of exhaust holes 24a and the opening area of one exhaust hole 24a may be set as appropriate in consideration of the strength required for the washer 20a, the manufacturing cost, the ease of manufacturing of the washer 20a, and the like.
　本発明の実施形態に係るアルカリ乾電池１ａは、ワッシャー２０ａのフランジ部２２に複数の排気孔２４ａが形成されていることに特徴を有している。 The alkaline dry battery 1a according to the embodiment of the present invention is characterized in that a plurality of exhaust holes 24a are formed in the flange portion 22 of the washer 20a.
＝＝＝排気孔の開口領域について＝＝＝
　ところでアルカリ乾電池１ａなどの円筒形電池は、各種電子機器の電池ボックスなどに装填される際、凸状の正極端子８と接触する平坦な金属板からなる電極端子と、平坦な負極端子板１０と接触するコイル状の電極端子（以下、電極端子バネとも言う）との間に狭持されることが多い。 === Regarding the Opening Area of the Exhaust Hole ===
By the way, when the cylindrical battery such as the alkaline battery 1a is loaded into a battery box or the like of various electronic devices, an electrode terminal made of a flat metal plate that comes into contact with the convex positive electrode terminal 8, a flat negative electrode terminal plate 10, and the like. It is often sandwiched between coiled electrode terminals (hereinafter also referred to as electrode terminal springs) in contact.
　そして実施形態に係るアルカリ乾電池１ａでは、フランジ部２２に排気孔２４ａが形成されたワッシャー２０ａが負極端子板１０側に装着されている。そのためアルカリ乾電池１ａを電池ボックスに装填した際、電極端子バネを構成する線材の先端が排気孔２４ａに入り込む可能性がある。 In the alkaline dry battery 1a according to the embodiment, a washer 20a having an exhaust hole 24a formed in the flange portion 22 is mounted on the negative electrode terminal plate 10 side. Therefore, when the alkaline battery 1a is loaded into the battery box, the tip of the wire constituting the electrode terminal spring may enter the exhaust hole 24a.
　線材の先端が排気孔２４ａに入り込めば電子機器からアルカリ乾電池１ａが取り出せなくなったり、ワッシャー２０ａが外れたりする可能性がある。あるいは線材が排気孔２４ａに引っ掛かった状態でアルカリ乾電池１ａを無理に取り出そうとして電子機器側の電極端子バネを破損させる可能性もある。そこで、排気孔２４ａの開口領域をこの線材が入り込まないような形状に設定すればより好ましい。 If the tip of the wire enters the exhaust hole 24a, there is a possibility that the alkaline dry battery 1a cannot be taken out from the electronic device or the washer 20a is detached. Alternatively, there is a possibility that the electrode terminal spring on the electronic device side may be damaged when the alkaline dry battery 1a is forcibly taken out while the wire is caught in the exhaust hole 24a. Therefore, it is more preferable to set the opening area of the exhaust hole 24a to a shape that does not allow this wire to enter.
　具体的には、電極端子バネの多くは、周知のごとく、直径が０．５ｍｍの線材で構成されていることから、排気孔２４ａが直径０．５ｍｍの円を包含しない平面形状となるように形成されていれば、電極端子バネの線材が排気孔２４ａに入り込まないようにすることができる。図５に電極端子バネの線材と排気孔２４ａの平面形状の関係の一例を示した。この図５に示したように、排気孔２４ａの形状が矩形である場合、直径Φ＝０．５ｍｍの円４０を包含しない矩形は短辺２４ｓの幅Ａが０．５ｍｍ未満であればよい。 Specifically, as is well known, since many electrode terminal springs are made of a wire having a diameter of 0.5 mm, the exhaust hole 24a has a planar shape that does not include a circle having a diameter of 0.5 mm. If formed, it is possible to prevent the wire of the electrode terminal spring from entering the exhaust hole 24a. FIG. 5 shows an example of the relationship between the wire of the electrode terminal spring and the planar shape of the exhaust hole 24a. As shown in FIG. 5, when the shape of the exhaust hole 24a is a rectangle, a rectangle that does not include the circle 40 having a diameter Φ = 0.5 mm may have a width A of the short side 24s of less than 0.5 mm.
＝＝＝その他の実施例＝＝＝
　上記実施形態に係るアルカリ乾電池１ａでは、ワッシャー２０ａのフランジ部２２に矩形平面形状を有する排気孔２４ａが形成されていたが、個々の排気孔２４ａの平面形状は矩形に限定されない。 === Other Embodiments ===
In the alkaline battery 1a according to the above embodiment, the exhaust hole 24a having a rectangular planar shape is formed in the flange portion 22 of the washer 20a. However, the planar shape of each exhaust hole 24a is not limited to a rectangular shape.
　図６Ａ、図６Ｂ、図６Ｃに平面形状が矩形以外の排気孔２４ｂ、２４ｃ、２４ｄを備えたワッシャー２０ｂ、２０ｃ、２０ｄの例を示した。図６Ａはワッシャー２０ｂを上方から見たときの平面図であり、図６Ｂはワッシャー２０ｃを上方から見たときの平面図であり、図６Ｃはワッシャー２０ｄを上方から見たときの平面図である。 FIG. 6A, FIG. 6B, and FIG. 6C show examples of washers 20b, 20c, and 20d having exhaust holes 24b, 24c, and 24d whose planar shapes are not rectangular. 6A is a plan view when the washer 20b is viewed from above, FIG. 6B is a plan view when the washer 20c is viewed from above, and FIG. 6C is a plan view when the washer 20d is viewed from above. .
　図６Ａに示したワッシャー２０ｂでは、円筒軸１００側を底辺として放射外方向に頂点を有する三角形の排気孔２４ｂが形成されている。図６Ｂに示したワッシャー２０ｃでは、放射方向に長軸を有する楕円形の排気孔２４ｃが形成されている。図６Ｃに示したワッシャー２０ｄでは、フランジ部２２の円周に沿う所定幅の円弧状の排気孔２４ｄが形成されている。 In the washer 20b shown in FIG. 6A, a triangular exhaust hole 24b having an apex in the radial outward direction with the cylindrical shaft 100 side as a base is formed. In the washer 20c shown in FIG. 6B, an elliptical exhaust hole 24c having a long axis in the radial direction is formed. In the washer 20d shown in FIG. 6C, an arc-shaped exhaust hole 24d having a predetermined width along the circumference of the flange portion 22 is formed.
　なお図６Ａ、図６Ｂ、図６Ｃに示した各ワッシャー２０ｂ，２０ｃ，２０ｄの排気孔２４ｂ，２４ｃ，２４ｄを含め、平面形状が矩形以外の排気孔を備えたワッシャーでは、その排気孔の平面形状が直径Φ＝０．５ｍｍの円４０を包含しない形状であればより好ましい。 6A, 6B, and 6C, including the exhaust holes 24b, 24c, and 24d of the washers 20b, 20c, and 20d, the washer having an exhaust hole with a non-rectangular planar shape has a planar shape of the exhaust hole. Is more preferable if it does not include the circle 40 having a diameter Φ = 0.5 mm.
　なお上述した実施の形態は本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。本発明はその趣旨を逸脱することなく変更、改良され得るとともに、本発明にはその等価物も含まれる。 The above-described embodiment is for facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and equivalents thereof are also included in the present invention.
１，１ａ　円筒形電池（アルカリ乾電池）、
２　電池缶、
３　正極合剤、
４　セパレーター、
５　負極ゲル、
６　負極集電子、
７　封口ガスケット、
８　正極端子、
９　外装体、
１０　負極端子板、
１１　負極端子板の底、
１２　ガス抜き孔、
１３　負極端子板の周縁部、
１４　負極端子板の側面部、
２０，２０ａ，２０ｂ，２０ｃ，２０ｄ　ワッシャー、
２１　胴部、
２２　フランジ部、
２３　中空部、
２４ａ、２４ｂ，２４ｃ，２４ｄ　排気孔（孔）、
２４ｓ　短辺
２５　上面
２６　下面
４０　円
１１０～１１２　排気経路 1,1a Cylindrical battery (alkaline battery),
2 battery cans,
3 cathode mix,
4 Separator,
5 negative electrode gel,
6 Negative electrode current collector,
7 Sealing gasket,
8 Positive terminal,
9 exterior body,
10 negative terminal plate,
11 The bottom of the negative terminal plate,
12 vent holes,
13 peripheral edge of the negative terminal plate,
14 side surface of the negative terminal plate,
20, 20a, 20b, 20c, 20d washer,
21 torso,
22 flange part,
23 hollow part,
24a, 24b, 24c, 24d exhaust holes (holes),
24 s Short side 25 Upper surface 26 Lower surface 40 Circle 110 to 112 Exhaust path

Claims (3)

  1. 　一方の電極の集電体を兼ねる有底円筒状の電池缶内に発電要素が収納されるとともに、当該電池缶の開口に他方の電極の端子を兼ねる端子板が絶縁性の封口ガスケットを介して嵌着されることで当該電池缶が密閉されてなる円筒形電池であって、
    　前記電池缶の開口を上方として、
    　前記端子板は、円板状の底部の周縁に下方に垂設される筒状の側面部と、当該側面部の下端周縁に円形鍔状に形成された周縁部と、前記側面部の内外を連絡するガス抜き孔とを備え、
    　前記封口ガスケットは、前記端子板の前記周縁部と前記電池缶の開口端部の内面とに狭持され、
    　上下両端が開口する扁平円筒状の胴部の上端周縁に円形鍔状に形成されたフランジが一体的に形成されたワッシャーを備え、前記胴部が前記側面部の外周面に装着され、前記フランジが前記電池缶の開口端部の上方を覆い、
    　前記フランジには上下両面を連絡する排気孔が複数箇所に形成され、
    　前記電池缶の内方から前記ガス抜き孔を経て前記フランジ部の下面に至る通気経路が形成されている、
    　ことを特徴とする円筒形電池。     A power generation element is housed in a bottomed cylindrical battery can that also serves as a current collector for one electrode, and a terminal plate that also serves as a terminal for the other electrode is placed through an insulating sealing gasket in the opening of the battery can. A cylindrical battery in which the battery can is sealed by being fitted,
    With the opening of the battery can upward,
    The terminal plate includes a cylindrical side surface that hangs downward on the periphery of a disc-shaped bottom, a peripheral edge formed in a circular bowl shape at the lower edge of the side surface, and the inside and outside of the side surface. With vent holes to communicate,
    The sealing gasket is sandwiched between the peripheral edge of the terminal plate and the inner surface of the open end of the battery can,
    A flat washer-shaped cylindrical body having an open upper and lower ends, and a washer formed integrally with a flange formed in the shape of a circular bowl at the periphery of the upper end; the body is mounted on the outer peripheral surface of the side surface; Covers the upper end of the battery can,
    The flange is formed with a plurality of exhaust holes connecting the upper and lower surfaces,
    A ventilation path is formed from the inside of the battery can to the lower surface of the flange portion through the vent hole.
    A cylindrical battery characterized by the above.
  2. 　請求項１において、前記端子板は負極端子板であり、前記ワッシャーは当該負極端子板に装着され、前記排気孔は、直径０．５ｍｍの円を包含しない平面形状に形成されていることを特徴とする円筒形電池。 2. The terminal plate according to claim 1, wherein the terminal plate is a negative electrode terminal plate, the washer is attached to the negative electrode terminal plate, and the exhaust hole is formed in a planar shape not including a circle having a diameter of 0.5 mm. A cylindrical battery.
  3. 　請求項１または２において、前記電池缶が正極集電体を兼ねる電池ケースで、前記端子板が負極端子板となるアルカリ乾電池であることを特徴とする円筒形電池。 3. The cylindrical battery according to claim 1, wherein the battery can is a battery case serving also as a positive electrode current collector, and the terminal plate is an alkaline dry battery serving as a negative electrode terminal plate.
PCT/JP2017/030069 2016-08-23 2017-08-23 Cylindrical battery WO2018038143A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016162509A JP6770851B2 (en) 2016-08-23 2016-08-23 Cylindrical battery
JP2016-162509 2016-08-23

Publications (1)

Publication Number Publication Date
WO2018038143A1 true WO2018038143A1 (en) 2018-03-01

Family

ID=61244853

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/030069 WO2018038143A1 (en) 2016-08-23 2017-08-23 Cylindrical battery

Country Status (2)

Country Link
JP (1) JP6770851B2 (en)
WO (1) WO2018038143A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112310553A (en) * 2020-11-02 2021-02-02 深圳市合壹新能技术有限公司 Battery shell mounting structure and button cell
CN114725586A (en) * 2022-04-07 2022-07-08 东莞市沃泰通新能源有限公司 Novel sodium ion cylinder type battery of structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7468635B2 (en) * 2020-04-23 2024-04-16 株式会社村田製作所 Secondary battery

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07254397A (en) * 1994-03-16 1995-10-03 Matsushita Electric Ind Co Ltd Cylindrical alkaline battery
JP2005019118A (en) * 2003-06-25 2005-01-20 Toshiba Battery Co Ltd Cylindrical alkaline battery
JP2012059616A (en) * 2010-09-10 2012-03-22 Fdk Energy Co Ltd Alkaline battery
JP2014127363A (en) * 2012-12-26 2014-07-07 Fdk Energy Co Ltd Cylindrical battery
JP2016195010A (en) * 2015-03-31 2016-11-17 Ｆｄｋエナジー株式会社 Cylindrical battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07254397A (en) * 1994-03-16 1995-10-03 Matsushita Electric Ind Co Ltd Cylindrical alkaline battery
JP2005019118A (en) * 2003-06-25 2005-01-20 Toshiba Battery Co Ltd Cylindrical alkaline battery
JP2012059616A (en) * 2010-09-10 2012-03-22 Fdk Energy Co Ltd Alkaline battery
JP2014127363A (en) * 2012-12-26 2014-07-07 Fdk Energy Co Ltd Cylindrical battery
JP2016195010A (en) * 2015-03-31 2016-11-17 Ｆｄｋエナジー株式会社 Cylindrical battery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112310553A (en) * 2020-11-02 2021-02-02 深圳市合壹新能技术有限公司 Battery shell mounting structure and button cell
CN112310553B (en) * 2020-11-02 2022-09-06 深圳市合壹新能技术有限公司 Battery shell mounting structure and button cell
CN114725586A (en) * 2022-04-07 2022-07-08 东莞市沃泰通新能源有限公司 Novel sodium ion cylinder type battery of structure

Also Published As

Publication number Publication date
JP2018032485A (en) 2018-03-01
JP6770851B2 (en) 2020-10-21

Similar Documents

Publication Publication Date Title
WO2018038143A1 (en) Cylindrical battery
JPH10505457A (en) Seal for electrochemical cell
US7960053B2 (en) Sealed battery and manufacturing method therefor
CN106025147B (en) Cylindrical battery
EP2100340A1 (en) End cap seal assembly for an electrochemical cell
JP2008262738A (en) Enclosd battery
JP4166938B2 (en) Snap-through gasket for Galivani batteries
JP2006066269A (en) Sealed-type storage battery
JP6078334B2 (en) Cylindrical battery
JP2018101468A (en) Sealing gasket of cylindrical alkaline cell and cylindrical alkaline cell
JP2010505229A (en) End cap sealing assembly for electrochemical cells
JP7085434B2 (en) Cylindrical batteries and washers for cylindrical batteries
JP5588806B2 (en) Alkaline battery
US20090029238A1 (en) Electrochemical cell having polymeric moisture barrier
JP6890028B2 (en) Cylindrical battery
JP6726471B2 (en) Cylindrical battery
JP2005285637A (en) Battery and method for forming its sealed body
JP2531935Y2 (en) Cylindrical battery
JPH0535561Y2 (en)
JPH0644014U (en) Gasket for cylindrical alkaline batteries
JPH055643Y2 (en)
US20080102365A1 (en) End cap seal assembly for an electrochemical cell
JPH09259862A (en) Alkaline battery, and forming method for terminal board thereof
JPS63124360A (en) Cylindrical battery
JP2007048683A (en) Sealed battery

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: 17843621

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17843621

Country of ref document: EP

Kind code of ref document: A1