WO2014081227A1 - Rondelle résistant à la corrosion, et batterie rechargeable comprenant celle-ci - Google Patents

Rondelle résistant à la corrosion, et batterie rechargeable comprenant celle-ci Download PDF

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Publication number
WO2014081227A1
WO2014081227A1 PCT/KR2013/010635 KR2013010635W WO2014081227A1 WO 2014081227 A1 WO2014081227 A1 WO 2014081227A1 KR 2013010635 W KR2013010635 W KR 2013010635W WO 2014081227 A1 WO2014081227 A1 WO 2014081227A1
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WO
WIPO (PCT)
Prior art keywords
washer
secondary battery
rust
nano
present
Prior art date
Application number
PCT/KR2013/010635
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English (en)
Korean (ko)
Inventor
김도균
황보광수
이향목
정상석
Original Assignee
주식회사 엘지화학
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
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Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to JP2014551216A priority Critical patent/JP6007447B2/ja
Priority to CN201380002416.0A priority patent/CN103959514B/zh
Publication of WO2014081227A1 publication Critical patent/WO2014081227A1/fr

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    • 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
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/571—Methods or arrangements for affording protection against corrosion; Selection of materials therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
    • 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
    • H01M50/186—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
    • H01M50/19—Sealing members characterised by the material
    • H01M50/191—Inorganic 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
    • H01M50/183—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
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/195—Composite material consisting of a mixture of organic and inorganic materials
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/598—Guarantee labels
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • 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 rust-proof washer comprising a vaporizable rust inhibitor and a secondary battery comprising the same.
  • secondary batteries are classified into cylindrical batteries and rectangular batteries in which the electrode assembly is embedded in a cylindrical or rectangular metal can, and pouch-type batteries in which the electrode assembly is embedded in a pouch type case of an aluminum laminate sheet. .
  • a secondary battery in general, includes a can and an electrode assembly accommodated in the can; A cap assembly coupled to the top opening of the can; And a washer mounted to the top of the cap assembly.
  • the washer attached to the cap assembly basically serves to supplement the electrical insulation state, and also serves to protect the battery cell from external shock and to supplement the mechanical strength of the members mounted on the top of the battery cell. do. In addition, it also serves to improve the safety of the battery cell by preventing the internal short circuit of the battery that may be caused by the corrosion of the battery cell and the electronic devices such as PCM (current blocking device).
  • PCM current blocking device
  • polymer resin layers such as polypropylene, polyethylene, rayon, blended yarns, polyviscose, polynosics, and synthetic resins thereof have been used as washers for cylindrical batteries.
  • FIG. 1 there is a problem that rust occurs in a crimping portion of a cylindrical battery in a high temperature and high humidity atmosphere, and an improvement therefor is required.
  • the problem to be solved by the present invention is to provide a secondary battery comprising a rust-proof washer that can prevent the occurrence of rust or corrosion of the crimping portion of the battery.
  • the present invention provides a rust-proof washer for a secondary battery including a vaporizing rust inhibitor (VCI; Volatile Corrosion Inhibitor) and a base resin (base resin).
  • VCI vaporizing rust inhibitor
  • base resin base resin
  • the present invention is a secondary battery in which the electrode assembly of the anode / separator / cathode structure is embedded in the metal can, the washer (mounter) is mounted on the top of the cap assembly mounted on the open top of the metal can containing the electrode assembly
  • the washer provides a secondary battery including an anti-rust washer including a base resin and a vaporizable anti-corrosive agent.
  • the secondary battery including the rust-proof washer of the present invention can prevent the occurrence of rust or corrosion of the crimping portion of the battery to improve the safety of the battery.
  • 1 is a photograph showing a rusting image of the crimping portion of the cylindrical battery.
  • Figure 2 shows the manufacturing process of the anticorrosive wash washer according to an embodiment of the present invention.
  • FIG 3 is a schematic cross-sectional view showing an upper structure of a cylindrical secondary battery according to an embodiment of the present invention.
  • FIG. 4 shows an actual picture of a cylindrical battery equipped with an anti-rust washer according to an embodiment of the present invention.
  • FIG. 5 and 6 are photographs of the cylindrical battery manufactured according to one embodiment of the present invention stored in a sealed state in vinyl to test whether rust occurs.
  • An anti-rust washer for a secondary battery includes a vapor-proof rust inhibitor (VCI; Volatile Corrosion Inhibitor) and a base resin.
  • VCI vapor-proof rust inhibitor
  • base resin a vapor-proof rust inhibitor
  • the anti-corrosive washer is excellent in rust prevention property to prevent the occurrence of rust or corrosion of the crimping portion of the secondary battery can improve the safety of the battery.
  • the rust preventive property is a property of preventing the formation of a compound mainly composed of a hydroxide or an oxide on the metal surface, and means a property of preventing the generation of decay products on the metal surface.
  • the vaporizable rust inhibitor according to an embodiment of the present invention may include a polymer resin and NaNO 2 or NaNO 3 .
  • the vaporizable rust preventive agent may be composed of a mixture based on NaNO 2 or NaNO 3 or a compound having sublimation at room temperature and having rust resistance.
  • the polymer resin used in the present invention may be a polymer resin or a polymer synthetic resin that is commonly used.
  • polypropylene (PP), polybutylene terephthalate, polyethylene, PET, Teflon, polytetrafluoroethylene, rayon, blended yarn, polyviscose and polynostic, or a mixture of two or more thereof may be, but is not limited to these.
  • the anti-corrosive washer of the present invention may be obtained by mixing the vaporizing anti-corrosive agent and the base resin, and extruding it in an extruder to form a desired washer shape.
  • the base resin may be a polymer resin or polymer synthetic resin that is commonly used, for example, polypropylene (PP), polybutylene terephthalate, polyethylene, PET, Teflon, polytetrafluoroethylene, rayon, blended yarn It may be one or a mixture of two or more selected from the group consisting of polyviscos and polynosic.
  • NaNO 2 or NaNO 3 is finely ground until a uniform appearance.
  • the pulverized NaNO 2 or NaNO 3 can be mixed with the polymer resin to obtain a vaporizable rust inhibitor. After mixing and extruding it with the base resin, it can be punched out in the shape of a washer to produce an antirust washer.
  • the grinding process of NaNO 2 or NaNO 3 may be performed at room temperature and atmospheric pressure.
  • NaNO 2 or NaNO 3 must be uniformly dispersed in a uniform state to produce a rust preventive washer containing a uniform vaporizable rust inhibitor, further improving the rust resistance of the battery.
  • the NaNO 2 or NaNO 3 may be used in 3 to 30% by weight based on 100% by weight of the polymer resin, but is not limited thereto.
  • the pulverized NaNO 2 or NaNO 3 may be mixed with the molten polymer resin, preferably the molten polypropylene resin. At this time, it is possible to use a solvent and other additives when mixing, which can be used as commonly known in the art. At this time, the vaporizable rust preventive agent, for example, can be pelletized so that it can be easily stored and used, it can be made at room temperature, atmospheric pressure.
  • the vaporizable rust inhibitor produced in this way may be mixed with the base resin at a predetermined ratio according to the use, and for example, the vaporizable rust preventive agent may be used in an amount of 1 to 30 wt% based on 100 wt% of the base resin.
  • the mixture may be extruded at a constant temperature to obtain an extruded sheet, and the extruded sheet may be punched into a desired washer shape using a mold to obtain a rust preventive washer for secondary batteries of the present invention.
  • the washer preferably has a thickness of 0.1 mm to 0.8 mm.
  • the anti-corrosive washer it can be used by further adding a solvent and other additives used in the art, the method is only one example, it does not limit the present invention.
  • the present invention includes a secondary battery including the anti-rust washer.
  • a secondary battery according to an embodiment of the present invention is a secondary battery in which an electrode assembly having a cathode / separation membrane / cathode structure is embedded in a metal can, and a washer at the top of a cap assembly mounted on an open top of the metal can in which the electrode assembly is embedded.
  • a washer may be mounted, and the washer may be an anticorrosive washer including a base resin and a vaporizable rust inhibitor as described above.
  • the anti-corrosive washer may function by the following principle.
  • NaNO 2 or NaNO 3 can be dispersed in crystals inside the rust-proof washer, and slowly oxidized in the air to form NaNO 3 , so that NaNO 2 and NaNO 3 coexist in the rust-proof washer.
  • the NaNO 2 and NaNO 3 meet with moisture in the air to form HNO 2 (nitrous acid; nitrous acid) and HNO 3 (nitric acid; nitric acid), where HNO 3 is finely formed on the metal surface of the metal can of the secondary battery. Corrosion can be prevented by oxidizing.
  • these HNO 2 and HNO 3 when reacted with the iron surface of the metal can, the VCI gas (gas) action at the end of the metal can is 10 kPa to 1000 kPa thickness
  • Gamma iron trioxide ( ⁇ -Fe 2 O 3 ) may be formed.
  • the gamma iron trioxide ( ⁇ -Fe 2 O 3 ) formed at the end of the metal can further prevent rusting of the battery cell.
  • the metal can may be a cylindrical can or a rectangular can.
  • the cap assembly in the case of a cylindrical can, the cap assembly includes a positive electrode protruding terminal connected to an electrode assembly, a cap plate is connected to a positive electrode terminal, and the can forms a negative terminal. It may be a structure.
  • the cap assembly may have a cathode protruding terminal connected to an electrode terminal at a center thereof, and the rectangular can and the cap plate may have a structure in which an anode terminal is formed in an insulated state from the cathode terminal.
  • the secondary battery according to the present invention may preferably be a lithium secondary battery having a high energy density, discharge voltage, and output stability.
  • Such lithium secondary batteries are composed of a positive electrode, a negative electrode, a separator, a lithium salt-containing nonaqueous electrolyte, and the like.
  • the positive electrode is prepared by, for example, applying a mixture of a positive electrode active material, a conductive material, and a binder onto a positive electrode current collector, followed by drying, and further, a filler may be further added as necessary.
  • the negative electrode is also manufactured by coating and drying a negative electrode material on a negative electrode current collector, and if necessary, the components as described above may be further included.
  • the separator is interposed between the cathode and the anode, and an insulating thin film having high ion permeability and mechanical strength is used as the separator.
  • the lithium salt-containing non-aqueous electrolyte solution consists of a nonaqueous electrolyte solution and a lithium salt, and a liquid nonaqueous electrolyte solution, a solid electrolyte, an inorganic solid electrolyte, and the like are used as the nonaqueous electrolyte solution.
  • the electrode active material As the current collector, the electrode active material, the conductive material, the binder, the filler, the separator, the electrolyte, the lithium salt, and the like, conventional ones known in the art may be used.
  • the secondary battery according to the present invention can be produced by conventional methods known in the art. That is, it may be prepared by inserting a porous separator between the anode and the cathode and injecting the electrolyte therein.
  • the positive electrode may be manufactured by applying a slurry containing a lithium transition metal oxide active material, a conductive material, and a binder as a positive electrode active material onto a current collector, followed by drying and rolling.
  • the negative electrode can be produced by, for example, applying a slurry containing a carbon active material, a conductive material, and a binder as a negative electrode active material on a thin current collector, as described above, and then drying.
  • FIG 3 is a partial cross-sectional view schematically showing an upper structure of a cylindrical secondary battery according to one embodiment of the present invention.
  • the battery 100 inserts an electrode assembly 300 as a power generator into the can 200, injects an electrolyte solution therein, and cans (
  • the cap assembly 400 is mounted on the upper opening of the 200, and the can 200 is inserted into the heat shrinkable tubing 220 while applying the predetermined heat while the cap assembly 400 is mounted.
  • the cap assembly 400 may include a positive temperature coefficient (PTC) element 420 for preventing an overcurrent and a safety vent 430 for maintaining a pressure inside a battery in a normal state.
  • PTC positive temperature coefficient
  • the PTC device 420 and the safety vent 430 are in close contact with each other in the airtight gasket mounted on the upper beading part 210 of the can 200 to block overcurrent to the upper cap 410. Is installed.
  • the upper cap 410 protrudes upward, and serves as a positive electrode terminal by connection with an external circuit.
  • the safety vent 430 has a lower end thereof connected to the anode of the power generator 300 through the current blocking member 440 and the anode lead 310.
  • the safety vent 430 is a conductive thin plate, the center of which forms a downward indentation 432, and two notches having different depths are formed in the upper and lower bending portions of the indentation 432. It is.
  • the washer 500 is formed of a disc structure as a whole so as to be mounted on the bead 210 while surrounding the top cap 410 of the cap assembly 400. Meanwhile, when the heat shrinkable tubing 220 is contracted, the heat shrinkable tubing 220 surrounds the outer circumferential surface of the washer 500 while mounting the washer 500 to the cap assembly 400.
  • the thickness of the washer 500 may vary depending on its material, but is not particularly limited, and may preferably be 0.1 mm to 0.8 mm. Since the thickness of the washer affects its mechanical rigidity, elasticity, etc., if the washer thickness is too thin, it does not exhibit the desired mechanical rigidity and can be destroyed by a weak external impact. On the contrary, if the washer thickness is too thick, The increase in size of the battery is remarkable, which is undesirable. Therefore, these points can be considered in combination, and can be appropriately determined within the above range.
  • the washer 500 mounted to the cap assembly may be fixed to the corresponding parts in various ways.
  • a heat shrinkable tubing fixed to the outer circumferential surface of the washer or mounted on the outer surface of the can during crimping of the cap assembly may be provided.
  • a mechanical coupling method of fixing the outer circumferential surface of the washer while being contracted, an adhesive method of adding an adhesive to the lower surface of the washer or the upper surface of the cap assembly, and the like may be used.
  • the washer 500 may prevent the internal short from occurring when the upper cap 410 as the positive terminal contacts the can 200 as the negative terminal.
  • Figure 4 shows an actual picture of the cylindrical battery equipped with the washer.
  • the cylindrical battery according to an embodiment of the present invention can be provided with tubing (tubing) on the outside of the rust-proof washer can wrap the outer peripheral surface of the washer.
  • NaNO 2 was mixed well until it reached a uniform property at room temperature and atmospheric pressure, and then finely ground.
  • the pulverized NaNO 2 was mixed with the molten polypropylene resin to obtain a vaporizable rust inhibitor (VCI).
  • VCI vaporizable rust inhibitor
  • the pelletized vaporizable rust preventive agent was mixed with a polypropylene resin as a base resin in a ratio of about 0.5: 10, and extruded at a predetermined temperature to obtain an extruded sheet, which was punched into a washer shape using a mold to prepare an rust preventive washer.
  • Ni-plated SPCE cold rolled steel sheet
  • the electrode assembly was mounted on the cylindrical can, and then the anti-corrosive washer was wrapped around the upper cap of the cap assembly as shown in FIG. It was mounted on, and sealed the upper end of the cap assembly while wrapping the outer surface of the can with heat shrinkable tubing to prepare a cylindrical secondary battery.
  • a cylindrical secondary battery was produced in the same manner as in Example 1, except that a washer made of YUPO synthetic resin was used as the base resin without using a vaporizing rust inhibitor.
  • a cylindrical secondary battery was produced in the same manner as in Example 1, except that a washer made of polypropylene was used as the base resin without using a vaporizing rust inhibitor.
  • electrode assembly 310 anode lead
  • cap assembly 410 cap 420: PTC element
  • the secondary battery including the rust-proof washer according to an embodiment of the present invention can prevent the rust or corrosion of the crimping portion of the battery to improve the safety of the secondary battery, it can be usefully applied to the secondary battery field .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

Selon une forme de réalisation, la présente invention concerne une rondelle résistant à la corrosion destinée à une batterie rechargeable, et une batterie rechargeable comprenant celle-ci. La rondelle résistant à la corrosion est caractérisée en ce qu'elle comprend un inhibiteur de corrosion volatil (VCI) et une résine de base. La rondelle résistant à la corrosion de la présente invention permet d'améliorer la stabilité d'une batterie rechargeable en prévenant l'apparition de corrosion ou de rouille dans la partie sertissage d'un élément de batterie.
PCT/KR2013/010635 2012-11-23 2013-11-21 Rondelle résistant à la corrosion, et batterie rechargeable comprenant celle-ci WO2014081227A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014551216A JP6007447B2 (ja) 2012-11-23 2013-11-21 二次電池
CN201380002416.0A CN103959514B (zh) 2012-11-23 2013-11-21 缓蚀性垫圈及包括该缓蚀性垫圈的二次电池

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0133430 2012-11-23
KR20120133430A KR20140066336A (ko) 2012-11-23 2012-11-23 방청성 와셔 및 이를 포함하는 이차전지

Publications (1)

Publication Number Publication Date
WO2014081227A1 true WO2014081227A1 (fr) 2014-05-30

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PCT/KR2013/010635 WO2014081227A1 (fr) 2012-11-23 2013-11-21 Rondelle résistant à la corrosion, et batterie rechargeable comprenant celle-ci

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JP (1) JP6007447B2 (fr)
KR (1) KR20140066336A (fr)
CN (1) CN103959514B (fr)
WO (1) WO2014081227A1 (fr)

Cited By (6)

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JP2016076483A (ja) * 2014-10-02 2016-05-12 エルジー・ケム・リミテッド 二次電池用耐食チューブ及びこれを含む二次電池
KR20170116995A (ko) * 2016-04-12 2017-10-20 세종대학교산학협력단 나트륨계 전극 활물질 및 이를 포함하는 이차전지
WO2019164369A1 (fr) * 2018-02-23 2019-08-29 주식회사 엘지화학 Anticorrosif pour joint d'étanchéité, joint de batterie secondaire le comprenant, et batterie secondaire comprenant un joint de batterie secondaire
EP3544077A4 (fr) * 2017-05-22 2020-05-06 LG Chem, Ltd. Pile cylindrique comprenant un joint antirouille
US10938008B2 (en) * 2017-01-13 2021-03-02 Lg Chem, Ltd. Battery cell tray including volatile corrosion inhibitor
US11495867B2 (en) 2018-02-23 2022-11-08 Lg Energy Solution, Ltd. Rust inhibitor for gasket, gasket for secondary battery including same, and secondary battery including gasket for secondary battery

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104332584B (zh) * 2014-11-07 2016-08-24 宁波超霸能源有限公司 一种3v锂电池的绝缘结构
CN110800132B (zh) * 2017-07-20 2022-07-08 三洋电机株式会社 圆筒形电池
CN107528012A (zh) * 2017-07-27 2017-12-29 力神电池（苏州）有限公司 一种具有防锈功能的圆型锂离子电池
KR102270122B1 (ko) * 2018-02-23 2021-06-28 주식회사 엘지에너지솔루션 이차전지용 개스킷 및 이를 포함하는 이차 전지

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JP2015510659A (ja) 2015-04-09

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