WO1998029911A1 - Batterie a electrolyte non aqueux et fabrication de la plaque d'etancheite de cette batterie - Google Patents

Batterie a electrolyte non aqueux et fabrication de la plaque d'etancheite de cette batterie Download PDF

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Publication number
WO1998029911A1
WO1998029911A1 PCT/JP1997/004679 JP9704679W WO9829911A1 WO 1998029911 A1 WO1998029911 A1 WO 1998029911A1 JP 9704679 W JP9704679 W JP 9704679W WO 9829911 A1 WO9829911 A1 WO 9829911A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing plate
aqueous electrolyte
electrolyte battery
exhaust hole
metal foil
Prior art date
Application number
PCT/JP1997/004679
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Yoshizawa
Kazunori Haraguchi
Takuya Nakajima
Takashi Takeuchi
Yoshitaka Matsumasa
Kikuo Senoo
Takafumi Fujii
Mamoru Iida
Kenji Mizuno
Original Assignee
Matsushita Electric Industrial 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
Priority claimed from JP03340697A external-priority patent/JP3584656B2/ja
Priority claimed from JP17343797A external-priority patent/JP3550953B2/ja
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of WO1998029911A1 publication Critical patent/WO1998029911A1/fr
Priority to US09/139,482 priority Critical patent/US6132900A/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • H01M50/186—Sealing members characterised by the disposition of the 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
    • H01M50/10—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
    • 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
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery explosion-proof mechanism using a non-aqueous electrolyte such as an organic electrolyte, and a method for manufacturing a sealing plate provided with an explosion-proof safety valve therefor.
  • lithium secondary batteries typified by long-life, high-energy-density lithium-ion secondary batteries have been actively developed and widely adopted as built-in power supplies for driving these devices.
  • thin rectangular batteries which are particularly suitable for thinning equipment and have a large space effect, are gaining importance.
  • Lithium ion secondary batteries are composed of a composite oxide of lithium and a transition metal element as a positive electrode active material, graphite-based carbon as a negative electrode active material, an organic electrolyte solution that is an organic solvent solution of a lithium salt as an electrolyte, and a lithium ion conductor.
  • This is a battery system that uses a non-aqueous electrolyte such as a solid electrolyte.
  • lithium ions are released from the lithium-containing composite oxide of the positive electrode upon charging and eluted into the electrolyte, and at the same time, the same electrochemical equivalent of lithium ions is absorbed from the electrolyte into the carbon of the negative electrode. .
  • lithium ions are occluded in the positive electrode to become a lithium-containing composite oxide, and lithium ions are repeatedly released from the negative electrode, as opposed to during charging. Because of this behavior, lithium ion rechargeable batteries were identified as rocking chair batteries. Lee.
  • the composite of lithium and at least one transition metal element selected from the group of cobalt, nickel and manganese exhibiting a high electrode potential is used for the positive electrode.
  • Oxides are commonly used as active materials.
  • lithium-ion secondary batteries have the advantage of being extremely high in the energy density per unit volume as well as the energy density per unit weight, among the battery systems currently in practical use.
  • an organic electrolyte is used, so in the case of an external short circuit or overdischarge involving overcharge or reverse charge, the flowing current raises the battery temperature and evaporates or decomposes the solvent in the organic electrolyte.
  • the internal pressure of the battery suddenly and abnormally increased, and not only did the battery container rupture and leaked, but also there was a risk of a fire accident if current continued to flow.
  • an overcharge and overdischarge prevention circuit is usually built in a battery pack consisting of a plurality of cells, and the internal pressure of the battery is reduced.
  • an explosion-proof safety valve was activated to release the high-pressure gas in the battery to the atmosphere, and a PTC element was provided in each cell to prevent excessive current from flowing.
  • a lead plate of an electrode plate is attached in advance to an explosion-proof valve that deforms as the internal pressure increases, and the internal pressure reaches a predetermined value.
  • the present invention relates to a small battery having a small sealing plate area, particularly a thin battery having a rectangular or long cross section. Explosion-proof, highly productive and highly reliable circular lithium-ion rechargeable batteries with a relatively simple sealing plate that operates accurately without sacrificing discharge capacity It is intended to provide a non-aqueous electrolyte battery provided with a safety valve for use. Disclosure of the invention
  • the same metal as the cell container is provided at the upper edge of the opening of the metal bottomed cell container containing a battery element composed of a non-aqueous electrolyte and an electrode group composed of a positive electrode and a negative electrode through a separator.
  • the sealing between the cell container and the sealing plate is integrated by laser welding with the sealing plate made of glass fitted, and the through hole provided in the center of the sealing plate is electrolyte-resistant and electric.
  • a metal rivet also serving as a terminal is inserted and fixed via an insulating synthetic resin gasket, and at least one exhaust hole is provided between the terminal and the peripheral edge of the sealing plate.
  • the aluminum foil when aluminum is used for the metal foil that closes the exhaust hole forming the safety valve for explosion-proof, the aluminum foil is fixed in a state that it protrudes outward toward the outside of the cell, or When nickel, stainless steel or nickel-plated steel is used as the metal foil, the reliability of the operation of the safety valve for explosion-proof is improved by forming a thin pattern in advance on the metal foil that blocks the exhaust hole. Thus, in small non-aqueous electrolyte batteries, it is possible to completely prevent rupture accidents.
  • FIG. 1 is a longitudinal sectional view of a prismatic lithium ion secondary battery according to one embodiment of the present invention.
  • FIG. 2 shows an external plan view of a prismatic lithium ion secondary battery according to the present invention.
  • FIG. 3 shows an example of an enlarged sectional view of an explosion-proof safety valve section of an aluminum lid plate and a sealing plate made of metal foil according to the present invention.
  • FIG. 4 is a flow chart for continuously manufacturing a sealing plate according to the present invention. It is an example.
  • FIG. 5 is a perspective view of a band-shaped cladding plate for a sealing plate obtained by pressure bonding and integrating a cover plate and a metal foil, which are base materials of the sealing plate according to the present invention.
  • FIG. 6 is an external perspective view of a continuous strip hoop material for supplying a sealing plate according to the present invention.
  • FIG. 1 is a longitudinal sectional view of a thin to square lithium ion secondary battery according to one embodiment of the present invention.
  • an aluminum sealing plate 2 is fitted to the upper edge of the opening of a bottomed rectangular cell container 1 made of aluminum, and the fitting portions 3 are integrated by laser-welding to be liquid-tight. And it is hermetically sealed.
  • the sealing plate 2 is molded so that its center is concavely indented inward, and the through holes provided are coated with a sealant made of a mixture of blown asphalt and mineral oil.
  • a gasket 4 made of an electrically insulating synthetic resin is attached to the body.
  • a nickel or nickel-plated steel rivet 5 also serving as a negative electrode terminal is inserted into the gasket 4, and the tip of the rivet 5 is caulked while the nickel or nickel-plated steel washer 6 is fitted to the lower part of the rivet 5. Secure and seal liquid-tight and air-tight.
  • the gasket 4 was molded integrally with the sealing plate 2 by injection molding.
  • An elliptical exhaust hole 7 is provided between the negative electrode terminal 5 and the outer edge of the long side of the sealing plate 2, and an aluminum foil 8 is crimped and integrated on the inner surface of the sealing plate 2. The exhaust port 7 is closed by the aluminum foil 8 to form an explosion-proof safety valve.
  • One positive electrode and one negative electrode are wound through a separator 9 composed of a microporous polyethylene film, and the outermost circumference is wrapped with separator, forming an electrode group 10 having an oval cross section.
  • the aluminum positive electrode lead plate 11 of the electrode group 10 and the inner surface of the sealing plate 2 were connected and fixed by spot welding using a laser beam, and the nickel negative electrode lead plate 12 and the washer 6 were connected and fixed by resistance welding. ing.
  • the sealing plate 2 is provided with a liquid injection hole 13 .After a predetermined amount of the organic electrolyte is injected, an aluminum lid 14 is fitted into the liquid injection hole 13, and then the sealing plate 2 and the lid 1 are formed. 4 A sealed battery can be completed if it is sealed liquid-tight and air-tight.
  • the positive electrode is composed of 100 parts by weight of a composite oxide of lithium and cobalt (LiCoO 2) as an active material, 3 parts by weight of acetylene black as a conductive agent, and polytetrafluoroethylene (solid) as a binder. (10 parts by weight)
  • a base prepared by kneading a displaced solution and applied to both sides of a core aluminum foil, dried, cut into a predetermined size after pressurizing a roll.
  • An aluminum positive electrode lead plate 11 is welded to the aluminum foil of the positive electrode core material.
  • the negative electrode paste prepared by kneading 100 parts by weight of graphite-based carbon powder of the negative electrode material and a dispersion solution of styrene butene rubber (solid content: 5 parts by weight) with a binder copper foil was used. It is coated on both sides, dried, roll-pressed, and cut to a specified size. A negative electrode lead plate 12 made of nickel is welded to the copper foil of the core material of the negative electrode.
  • the organic electrolyte for example, lithium hexafluorophosphate (L i PF 6) 1. O mo 1 is mixed with ethylene carbonate (EC) and getyl carbonate (DEC) in a molar ratio of 1: 3.
  • the organic electrolyte it is used at a concentration of 1.0 liter dissolved in a solvent.
  • a liquid injection device equipped with a three-way cock. First, the pressure inside the cell is reduced by a vacuum pump, and the cock is switched to inject the liquid.
  • the organic electrolyte passes through the introduction groove 16 shown in FIG. 1 and firstly between the inner wall of the prismatic cell container 1 and the outer periphery of the electrode group 10 shown in the plan view of the prismatic battery in FIG. It accumulates in the space 17 formed. Therefore, there is an advantage that the organic electrolyte does not overflow and wet the injection hole 13 to make it difficult to perform welding in a later process.
  • the organic electrolyte collected in the space 17 is sequentially absorbed and fixed in the electrode group 10.
  • the electrode group 10 described here was wound so as to have an oval cross section, the present invention provides a plurality of positive electrodes and a plurality of positive electrodes via a separator like a general rectangular cell.
  • the present invention can be applied to the case of an electrode group composed of a negative electrode.
  • FIG. 1 shows a state where the central portion of the sealing plate 2 is drawn and formed so as to be concavely recessed toward the inside of the cell.
  • the gasket was made of polypropylene resin
  • FIG. 1 shows a state in which the aluminum foil 8 is crimped only to the portion that closes the exhaust hole 7, but the aluminum foil is applied not only to the exhaust hole 7 but also to the entire inner surface of the sealing plate 2. 8 may be crimped to form a clad plate.
  • polypropylene resin is often used as the gasket material because of its excellent injection moldability and low cost.
  • the compression ratio of the polypropylene gasket at the time of caulking is conventionally adjusted to be 50 to 70%.
  • the gasket material be an electrolyte-resistant material that is relatively stable thermally.
  • the diameter of the rivet forming the negative electrode terminal is extremely small, so that the gasket when caulking the rivet is used.
  • the compressibility of the material It is desirable to lower it to about 30%.
  • the shape of the exhaust hole with respect to the operating pressure of an explosion-proof safety valve in which a metal foil was pressure-bonded and integrated with the exhaust hole provided in the sealing plate according to the present invention was examined.
  • a method of punching using a mold is industrially adopted as an exhaust hole opening process.
  • Mold maintenance From the viewpoint of productivity and productivity, we excluded complex shapes such as triangles and stars as exhaust holes, and focused on four types of circular, elliptical, square, and rectangular shapes to examine variations in the operating pressure of explosion-proof safety valves. Each 100 sealing plates were examined. Table 3 shows the results.
  • the shape of the vent hole of the explosion-proof safety valve must be all elliptical, as confirmed in Example 3. It becomes difficult.
  • the safety valve operates with a small variation.
  • the aluminum vent plate material which is the base material of the sealing plate, and the aluminum foil are pressurized using a roller, and the cladding process is used to integrate them.
  • a safety valve is formed.
  • the aluminum foil closing the exhaust hole changes from a flat state to a state in which the aluminum foil bulges outward.
  • the roll is pressed excessively, the aluminum foil breaks and breaks, and the exhaust hole is not blocked, so that an explosion-proof safety valve cannot be formed.
  • non-aqueous electrolyte batteries such as lithium-ion secondary batteries
  • non-aqueous electrolyte batteries are required to be highly reliable under severe environmental conditions as power supplies for portable equipment.
  • these batteries were left in a hot and humid state for a long period of time, some batteries were found to leak organic electrolyte from around the explosion-proof safety valve.
  • a sealing plate was prepared, in which an organic anticorrosive coating consisting of coal tar pitch and dicerin was previously formed on the outer surface of the aluminum foil closing the exhaust hole of the explosion-proof safety valve.
  • 50 cells each of a prismatic lithium ion secondary battery were trial-produced, and were left in a charged state at 60 ° C. and a relative humidity of 90% for 3 power months.
  • Table 5 shows the results of visually examining the leakage rate of the battery after standing.
  • non-hygroscopic, chemically stable and highly plastic materials such as a mixture of bron bitumen and mineral oil, a sealant applied to the gasket surface, are also effective as organic anticorrosives It is.
  • Examples 1 to 5 are examples in which the cell container, the lid plate, and the sealing plate made of metal foil are all made of aluminum and have positive polarity. Further, the present invention has been described in detail with an example in which a terminal made of a rivet and a washer that are hermetically sealed via a gasket at the center of the sealing plate are usually made of nickel or nickel-plated steel and have a negative polarity. However, in the battery design, it is necessary to consider the necessity of reversing the polarity in the same cell structure shown in these embodiments.
  • the cell container, the lid plate, and the sealing plate made of metal foil are all made of nickel, stainless steel, or nickel-plated steel, have negative polarity, and have a rivet that is sealed and fixed at the center of the sealing plate via a gasket.
  • the terminal and the washer are made of aluminum and have a positive polarity.
  • the present invention can be similarly implemented in batteries having the opposite polarity to those in Examples 1 to 5, and can achieve the same effects.
  • the cell container and the lid plate of the sealing plate substrate are made of nickel, stainless steel or nickel-plated steel plate, and the exhaust holes provided on at least one side of the positive electrode terminal made of aluminum rivets are closed.
  • the explosion-proof safety valve closed with a metal foil made of nickel, stainless steel or nickel-plated steel has a problem that it is difficult to break to a predetermined gas pressure unless it is made thinner than the aluminum foil described in Examples 1 to 5. Occurs.
  • the burr generated on the lower surface of the lid plate of the exhaust hole punched from above the nickel-plated steel lid plate with a thickness of 0.6 mm Utilizing and integrating the nickel foil by projection welding and sealing. A thin horseshoe-shaped pattern was provided by engraving so as to be close to the inner circumference of the exhaust hole of the nickel foil. The effect of such marking was evaluated from the variation width of the valve operating pressure. Table 6 shows the results.
  • Such a means is effective even when the cell container, the lid plate, and the sealing plate made of metal foil in Examples 1 to 5 are all made of aluminum, particularly when the diameter of the exhaust hole is small. become.
  • the positive and negative electrode groups were placed on the sealing plate provided with a terminal consisting of a rivet and washer, an explosion-proof safety valve and a liquid injection hole at the center of the sealing plate via a gasket.
  • the electrode group is inserted and housed in a symmetrical bottomed cell container, and a sealing plate is fitted to the upper edge of the opening of the cell container.
  • the sealing plate to which the electrode group is connected and fixed is not necessarily left-right symmetric, so that in the subsequent steps, the semi-finished cells whose right and left are different move through the steps. This causes problems in process control and productivity.
  • the lid plate of the sealing plate base material is formed into a band-shaped hoop material, and Parts such as explosion-proof safety valves, liquid injection holes, and terminals are placed continuously, and all of the safety valve pinholes and inspections for the set minimum operating pressure are also performed continuously, and finally cut. If the battery is supplied as it is to the battery assembly process, the semi-finished battery whose left and right arrangement is reversed as described above will not flow to the process, and a highly reliable sealing plate can be manufactured with excellent productivity. Will be possible.
  • FIG. 4 is an example of a flowchart for continuously manufacturing a sealing plate according to the present invention.
  • the continuous manufacturing process of the sealing plate will be described with reference to the flowchart of FIG.
  • exhaust holes 7 are punched and provided at regular intervals in an aluminum lid hoop member 2 having a predetermined width and a predetermined thickness (for example, 0.6 mm).
  • a predetermined thickness for example, 0.03 mm
  • the aluminum foil is pressed and integrated between two rollers. Apply cladding (see Fig. 5). During this cladding process, the cover plate is slightly rolled and stretched, so excessive pressing must be avoided.
  • pilot holes 18 for positioning these processes are punched at regular intervals by a punching method.
  • a center portion of the sealing plate is drawn by a press using a mold so as to be concavely concave downward, and then a rivet insertion hole and a liquid injection hole 13 are opened by a punching method.
  • the synthetic resin for gasket 4 is molded into the rivet insertion hole by injection molding and fixed integrally with the sealing plate.
  • the sealing plate continuously manufactured with the hoop material is conveyed to the battery assembling step and punched out one after another with the pilot hole 18 as a guide.
  • the present invention has been described in detail with reference to a thin rectangular lithium ion secondary battery as an example, the present invention is not limited to this battery system. That is, the present invention uses various lithium primary batteries using an organic electrolyte, thionyl chloride as a positive electrode active material, a lithium primary battery in which a solid electrolyte is formed on a metal lithium negative electrode surface, and metal lithium or a lithium alloy as a negative electrode. Like other lithium secondary batteries, it can be applied to all non-aqueous electrolyte batteries in which the cell internal pressure rises abnormally due to an external short circuit, overcharge and overdischarge accompanied by reverse charge.
  • the structure of the present invention can be widely applied not only to rectangular batteries, but also to batteries having an oval cross section, a thin cylindrical shape, and a small sealing plate area.
  • examples are given of the use of aluminum for bottomed cell containers, lid plates, metal foils, rivets, washers, etc.
  • other than metal foil is not limited to pure aluminum.
  • a 300-series A1-Mn-based alloy, a 400-series A1-Si-based alloy it does not prevent thinning of housing materials such as cell containers and lid plates with materials having high mechanical strength and corrosion resistance, such as aluminum alloys such as A0-A1 Mg alloys of 0 series. .
  • the present invention relates to a battery in which a metal-made bottomed cell container is fitted with a sealing plate made of the same metal as the cell container at the upper edge of the opening, and the space between them is sealed by laser welding.
  • the through hole provided in the center of the sealing plate has electrolytic resistance and electrical insulation.
  • a metal rivet that doubles as a terminal is inserted and fixed via a gasket made of synthetic resin with an edge, and at least one exhaust hole is provided between the terminal and the peripheral edge of the sealing plate.
  • This is a non-aqueous electrolyte battery equipped with an explosion-proof safety valve whose exhaust hole is closed by pressing metal foil on the inner surface of the lid plate, which is a material. It can completely prevent the rupture of small batteries whose mold or cross section is oval or the like.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

Cette invention concerne une structure de clapet à l'épreuve des explosions pour batteries compactes et contenant un électrolyte non aqueux. Ces batteries peuvent par exemple consister une batterie auxiliaire à ions lithium qui est fine et rectangulaire ou possède une section transversale elliptique, et qui possède une surface réduite pour la plaque d'étanchéité. Cette invention concerne également la fabrication de la plaque d'étanchéité. Cette invention permet d'assurer la sécurité en ce qui concerne la batterie grâce à l'actionnement fiable du clapet à l'épreuve des explosions qui possède une structure simple, ceci sans amoindrir la capacité de la batterie. A cette fin, la partie bord supérieur ouverte d'un conteneur de cellule à fond métallique et la partie bord périphérique de la plaque d'étanchéité métallique sont hermétiquement jointes par soudage laser. Un orifice traverse la partie centrale de la plaque d'étanchéité, tandis qu'un rivet jouant également le rôle de borne est serré, hermétiquement collé et fixé à travers un joint. Un orifice d'évacuation, qui est situé entre la borne et la partie bord périphérique de la plaque d'étanchéité, est fermé par une feuille métallique et forme ainsi le clapet à l'épreuve des explosions. Grâce à sa structure simple, le clapet va fonctionner avec précision et prévenir ainsi toute défaillance. Cette plaque d'étanchéité peut en outre être fabriquée selon un processus continu sous forme d'anneau.
PCT/JP1997/004679 1996-12-25 1997-12-18 Batterie a electrolyte non aqueux et fabrication de la plaque d'etancheite de cette batterie WO1998029911A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/139,482 US6132900A (en) 1996-12-25 1998-08-25 Method of production of non-aqueous electrolyte battery and seal plate thereof

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP34484196 1996-12-25
JP8/344841 1996-12-25
JP03340697A JP3584656B2 (ja) 1996-12-25 1997-02-18 角形非水電解液電池用封口板の製造法
JP9/33406 1997-02-18
JP9/173437 1997-06-30
JP17343797A JP3550953B2 (ja) 1997-06-30 1997-06-30 非水電解液電池

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/139,482 Continuation-In-Part US6132900A (en) 1996-12-25 1998-08-25 Method of production of non-aqueous electrolyte battery and seal plate thereof

Publications (1)

Publication Number Publication Date
WO1998029911A1 true WO1998029911A1 (fr) 1998-07-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100528897B1 (ko) * 1999-01-22 2005-11-16 삼성에스디아이 주식회사 이차전지의 캡 어셈블리
CN112615091A (zh) * 2020-12-30 2021-04-06 武汉富航精密工业有限公司 二次电池顶盖组件的注塑装配方法及顶盖组件

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Publication number Priority date Publication date Assignee Title
JPH077665B2 (ja) * 1986-06-19 1995-01-30 松下電器産業株式会社 電池用安全弁装置の製造法
JPH07211305A (ja) * 1994-01-14 1995-08-11 Japan Storage Battery Co Ltd 有機電解液電池
JPH0831429A (ja) * 1994-07-21 1996-02-02 Matsushita Electric Ind Co Ltd 非水電解液電池
JPH0845488A (ja) * 1994-08-02 1996-02-16 Japan Storage Battery Co Ltd 密閉型電池
JPH0877999A (ja) * 1994-08-31 1996-03-22 Japan Storage Battery Co Ltd 電 池
JPH08171898A (ja) * 1994-12-16 1996-07-02 Fuji Elelctrochem Co Ltd 防爆安全装置を備えた角形電気化学素子とその製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH077665B2 (ja) * 1986-06-19 1995-01-30 松下電器産業株式会社 電池用安全弁装置の製造法
JPH07211305A (ja) * 1994-01-14 1995-08-11 Japan Storage Battery Co Ltd 有機電解液電池
JPH0831429A (ja) * 1994-07-21 1996-02-02 Matsushita Electric Ind Co Ltd 非水電解液電池
JPH0845488A (ja) * 1994-08-02 1996-02-16 Japan Storage Battery Co Ltd 密閉型電池
JPH0877999A (ja) * 1994-08-31 1996-03-22 Japan Storage Battery Co Ltd 電 池
JPH08171898A (ja) * 1994-12-16 1996-07-02 Fuji Elelctrochem Co Ltd 防爆安全装置を備えた角形電気化学素子とその製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100528897B1 (ko) * 1999-01-22 2005-11-16 삼성에스디아이 주식회사 이차전지의 캡 어셈블리
CN112615091A (zh) * 2020-12-30 2021-04-06 武汉富航精密工业有限公司 二次电池顶盖组件的注塑装配方法及顶盖组件
CN112615091B (zh) * 2020-12-30 2023-06-23 武汉富航精密工业有限公司 二次电池顶盖组件的注塑装配方法及顶盖组件

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