WO2014010872A1 - Batterie secondaire - Google Patents

Batterie secondaire Download PDF

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Publication number
WO2014010872A1
WO2014010872A1 PCT/KR2013/005943 KR2013005943W WO2014010872A1 WO 2014010872 A1 WO2014010872 A1 WO 2014010872A1 KR 2013005943 W KR2013005943 W KR 2013005943W WO 2014010872 A1 WO2014010872 A1 WO 2014010872A1
Authority
WO
WIPO (PCT)
Prior art keywords
secondary battery
electrode tab
negative electrode
positive electrode
sealing portion
Prior art date
Application number
PCT/KR2013/005943
Other languages
English (en)
Korean (ko)
Inventor
공명철
Original Assignee
에스케이이노베이션 주식회사
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 에스케이이노베이션 주식회사 filed Critical 에스케이이노베이션 주식회사
Publication of WO2014010872A1 publication Critical patent/WO2014010872A1/fr

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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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • 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
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/02—Details
    • 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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered 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
    • 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
    • H01M50/50—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
    • 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
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • 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
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • 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 secondary battery.
  • the battery pack is built in.
  • automobiles using motors such as hybrid vehicles (HVs) and electric vehicles (EVs) have been developed and produced, and these vehicles also have built-in battery packs capable of driving the motors.
  • the above-described battery pack is provided with at least one battery to output a predetermined level of voltage in order to drive an electric / storage device or a vehicle for a predetermined time.
  • battery packs adopt a secondary battery capable of charging / discharging in recent years.
  • Representative secondary batteries include lithium secondary batteries such as nickel-cadmium (Ni-Cd) batteries, nickel-hydrogen (Ni-MH) batteries, lithium (Li) batteries, and lithium ion (Li-ion) batteries.
  • lithium secondary batteries have been researched and developed since the early 1970s, and in 1990, lithium ion batteries using carbon as a negative electrode instead of lithium metal were developed.
  • the lithium secondary battery has been used for more than 500 cycles and has a short charging time of 1 to 2 hours. It is characterized by the highest sales elongation among secondary batteries and a light weight of about 30 to 40% as compared to nickel-hydrogen batteries.
  • the lithium secondary battery has the highest unit cell voltage (3.0 to 3.7V) and excellent energy density among the existing secondary batteries, and may have characteristics optimized for mobile devices.
  • the lithium secondary battery is generally classified into a liquid electrolyte battery and a polymer electrolyte battery according to the type of electrolyte.
  • a battery using a liquid electrolyte is called a lithium ion battery
  • a battery using a polymer electrolyte is called a lithium polymer battery.
  • the exterior material of the lithium secondary battery may be formed in various kinds, and typical types of exterior materials include cylindrical, prismatic, and pouches.
  • an electrode assembly including a cathode plate, a cathode plate, and a separator interposed therebetween is stacked or wound.
  • the secondary battery may generate gas inside due to overcharge or short circuit.
  • the secondary battery according to the prior art does not have a configuration capable of discharging the gas, as disclosed in the patent document of the following prior art document. Therefore, when gas is generated inside the packaging material due to overcharging or short circuiting, the pressure or temperature rises rapidly, and thus an explosion occurs, thereby causing a problem that the peripheral device may be damaged or the human body may be damaged.
  • Patent Document 1 KR2008-0070206 A
  • the present invention is to solve the above problems of the prior art, one aspect of the present invention by forming a hole in the sealing portion of the packaging material, when the gas is generated by the overcharge or short circuit inside the packaging material, the sealing of the sealing portion is released Is to provide a secondary battery that can be discharged gas.
  • the secondary battery according to the embodiment of the present invention includes an electrode assembly including a positive electrode plate, a negative electrode plate, and a separator, and a sealing part sealed along an edge to accommodate the electrode assembly therein, and an exterior member having a hole penetrating the sealing part. do.
  • the packaging material is a pouch.
  • the packaging material is formed by laminating in order of an adhesive layer, a metal layer, and an insulating layer.
  • the exterior member is heat-sealed to form the sealing part.
  • the positive electrode tab is bonded to the positive electrode plate and protrudes to the outside of the packaging material and the negative electrode tab is bonded to the negative electrode plate and further protrudes to the outside of the packaging material.
  • the positive electrode tab and the negative electrode tab protrude to one side of the packaging material.
  • the positive electrode tab protrudes to one side of the packaging material
  • the negative electrode tab protrudes to the other side of the packaging material
  • the hole is formed between the positive electrode tab and the negative electrode tab of the sealing part.
  • the hole is formed within a predetermined distance from the positive electrode tab and the negative electrode tab of the sealing part.
  • a plurality of holes are formed along the sealing part.
  • the hole is formed in a circular shape.
  • the sealing of the sealing part can be released and the gas can be discharged. Therefore, the secondary battery can be prevented from being exploded, thereby preventing the peripheral device from being damaged or damaging the human body.
  • 1 to 2 is a plan view of a secondary battery according to an embodiment of the present invention
  • FIGS. 1 and 2 are exploded perspective views of the secondary battery illustrated in FIGS. 1 and 2;
  • FIGS. 5 is a perspective view of the electrode assembly shown in FIGS.
  • FIGS. 6 to 7 are cross-sectional views illustrating a process of forming the sealing unit illustrated in FIGS. 1 to 2;
  • FIG. 8 to 9 are perspective views illustrating a process of discharging gas by the secondary battery illustrated in FIG. 1, and
  • FIG. 10 is a plan view illustrating a modified example of a secondary battery according to an embodiment of the present invention.
  • FIG. 1 to 2 is a plan view of a secondary battery according to an embodiment of the present invention
  • Figures 3 to 4 is an exploded perspective view of the secondary battery shown in Figures 1 to 2
  • Figure 5 is shown in Figures 1-2. Is a perspective view of the assembled electrode assembly.
  • the secondary battery 100 includes an electrode assembly 110 and an electrode assembly 110 including a positive electrode plate 113, a negative electrode plate 115, and a separator 117.
  • the sealing unit 137 is sealed along the rim to accommodate the inside, and includes an exterior member 130 having a hole 139 penetrating through the sealing unit 137.
  • the electrode assembly 110 includes a positive electrode plate 113, a negative electrode plate 115, and a separator 117.
  • the electrode assembly 110 may be a winding type in which the positive electrode plate 113, the negative electrode plate 115, and the separator 117 are wound in a jelly-roll, or may be a stacked type. have.
  • the electrode assembly 110 according to the present embodiment is illustrated in the drawing as a winding type, it may be a stacked type.
  • the positive electrode plate 113 is a slurry for the positive electrode to which the positive electrode active material is added to the positive electrode current collector
  • the negative electrode plate 115 is a negative electrode slurry to which the negative electrode active material is added to the negative electrode current collector
  • the separator 117 Is interposed between the positive electrode plate 113 and the negative electrode plate 115.
  • the positive electrode plate 113 stores / discharges electrons generated by the removal / insertion of lithium ions into the crystal structure, and becomes a source of lithium, which is a source of electrical energy.
  • the positive electrode plate 113 should have high energy density, stable crystal structure (to prevent change of the crystal structure during battery charging / discharging), and chemical stability (to be stable to high potential and organic electrolyte).
  • the positive electrode plate 113 should be reversible in the electrode reaction, and have a particle shape of a certain form to facilitate the manufacture.
  • the positive electrode active material of the positive electrode plate 113 includes lithium cobalt oxide (LiCoO 2 ), a lithium metal oxide (LiMO 2 ) having a layered structure such as a ternary structure, and lithium manganese oxide (LiMn). 2 O 4) it is olivine (olivine) based material (LiMPO 4), such as spinel-based material typified (LiM 2 O 4), or lithium iron phosphate (LiFePO 4) can be used as, but not limited to this.
  • the negative electrode plate 115 allows a current to flow in an external circuit while reversibly occlude / discharge lithium ions from the positive electrode plate 113.
  • the negative electrode plate 115 should have a large lithium ion occlusion capacity, high charge and discharge efficiency and excellent reversibility, and need to have a fast electrode chemical reaction rate.
  • the negative electrode active material of the negative electrode plate 115 may be a carbon (C) -based material, Si, Sn, tin oxide, composite tin alloys, or transition metal oxides. Or lithium metal oxide may be used, but is not limited thereto.
  • the separator 117 is a separator to prevent electrical short between the positive electrode plate 113 and the negative electrode plate 115, the microporous membrane of polyolefin resin such as polyethylene (PE) or polypropylene (PP) Can be used.
  • PE polyethylene
  • PP polypropylene
  • the positive electrode plate 113 may be provided with a positive electrode non-coating portion is not coated with a positive electrode slurry on the positive electrode current collector, and similar to the positive electrode plate 113, the negative electrode plate 115 is provided with a negative electrode non-coated portion is not coated with a negative electrode slurry Can be.
  • the positive electrode tab 120a and the negative electrode tab 120b of a predetermined length are respectively bonded to the positive electrode plain portion and the negative electrode plain portion by welding, and the positive electrode tab 120a and the negative electrode tab 120b are each sealed with an outer edge ( 130 may protrude to the outside. At this time, both the positive electrode tab 120a and the negative electrode tab 120b may protrude to one side of the exterior member 130 (see FIG. 1).
  • the positive electrode tab 120a and the negative electrode tab 120b may protrude in one direction (same direction) of the exterior member 130.
  • the scope of the present invention is not necessarily limited thereto, and the positive electrode tab 120a may protrude to one side of the exterior member 130 and the negative electrode tab 120b may protrude to the other side of the exterior member 130 (FIG. 2). Reference). That is, the positive electrode tab 120a and the negative electrode tab 120b may protrude in both directions (counter directions) of the exterior member 130.
  • an insulating tape 125 may be provided on the positive electrode tab 120a and the negative electrode tab 120b.
  • the insulating tape 125 surrounds the outside of the positive electrode tab 120a and the negative electrode tab 120b at a portion where the positive electrode tab 120a and the negative electrode tab 120b overlap with the sealing portion 137 of the exterior member 130. It is formed to.
  • the insulating tape 125 may not only electrically insulate the positive electrode tab 120a and the negative electrode tab 120b from the exterior member 130, but also improve the sealing property of the exterior member and prevent leakage.
  • the electrolyte may be charged into the exterior material 130 in a liquid state, the separator 117 may serve as an electrolyte. Alternatively, the electrolyte may be filled into the exterior material 130 in a liquid state, and then a polymerizable component may be added to finally make the electrolyte in a polymer state.
  • the exterior material 130 serves to accommodate the electrode assembly 110, and a sealing part 137 sealed along the edge is formed.
  • the material of the exterior material 130 may be a pouch (Pouch) that is aluminum, as shown in Figures 3 to 4, may be formed in a substantially rectangular parallelepiped shape.
  • the exterior member 130 may include a container 133 in which the electrode assembly 110 is accommodated together with an electrolyte and a cover 135 covering an open upper surface of the container 133. In this case, the exterior member 130 is sealed at the edge of the container 133 and the edge of the cover 135 in a state in which the positive electrode tab 120a and the negative electrode tab 120b of the electrode assembly 110 accommodated therein protrude outwards.
  • the portion 137 may be formed and sealed.
  • the exterior member 130 may include an adhesive layer 130a formed of unstretched polypropylene (CPP) or polypropylene (Polypropylene, PP), a metal layer 130b formed of aluminum, or the like. And an insulating layer 130c formed of a polyethylene terephthalate (PET) resin or a nylon (Nylon) resin.
  • the adhesive layer 130a serves to seal the exterior material 130 to each other to seal each other
  • the metal layer 130b serves to block air, gas or moisture
  • the insulating layer 130c has insulation property with the outside. It has a role to secure.
  • the two adhesive layer (130a) of the portion (edge of the packaging material 130) on which the sealing portion 137 is to be formed to face.
  • heat and pressure are applied by heating means 140, a heating block, or a heating jig.
  • the adhesive layer (130a) of the exterior material 130 is melted by the heat provided by the heating means 140 to increase the degree of freedom of flow, and the sealing portion 137 is formed while curing through the cooling process.
  • the exterior member 130 is formed with a hole 139 through the sealing portion 137.
  • the hole 139 serves to discharge the gas by releasing the sealing of the sealing part 137 when gas is generated by the overcharging or the short circuit inside the exterior member 130.
  • FIG. 8 to 9 are perspective views illustrating a process of discharging gas by the secondary battery illustrated in FIG. 1, with reference to this, to examine a process of discharging gas.
  • gas is generated in the exterior member 130 due to overcharging or short circuit
  • pressure is applied to the sealing unit 137 while the exterior member 130 expands (see FIG. 8).
  • the gas is discharged while the sealing of the sealing portion 137 around the hole 139, which is relatively weak in the sealing portion 137, is released (see FIG. 9).
  • the gas is discharged while the sealing of the sealing unit 137 around the hole 139 is released, thereby preventing the secondary battery 100 from being exploded. have. Therefore, it is possible to prevent the peripheral device from being damaged or damaging the human body.
  • the hole 139 may be formed in various locations.
  • the hole 139 is the positive electrode tab 120a and the negative electrode. It may be formed between the tabs (120b).
  • the hole 139 is It may be formed within a predetermined distance (d) from the positive electrode tab 120a and the negative electrode tab 120b.
  • the direction in which the gas is discharged can be specified within the predetermined distance d between the positive electrode tab 120a and the negative electrode tab 120b having the hole 139 or from the positive electrode tab 120a and the negative electrode tab 120b. Therefore, there is an advantage that can be reflected in the design of the peripheral device.
  • FIG. 10 is a plan view illustrating a modified example of a secondary battery according to an exemplary embodiment of the present invention. As illustrated in FIG. 10, a plurality of holes 139 of the secondary battery 200 are formed along the sealing part 137. Can be. In this case, when the gas is excessively generated in the exterior member 130, since the sealing is released from the sealing part 137 of the various parts in which the hole 139 is formed, there is an advantage that the gas can be discharged stably and effectively.
  • the position of the hole 139 described above is exemplary, and the scope of the present invention is not limited thereto, and when the gas is excessively generated, if the sealing of the sealing part 137 can be released, the hole 139 ) May be formed anywhere in the sealing unit 137.
  • the shape of the hole 139 is not particularly limited, but may be formed in a circular shape, as shown in the enlarged view of FIG. As described above, by forming the hole 139 in a circular shape, the pressure P applied to the sealing portion 137 while the gas is generated can be evenly distributed along the circular hole 139. Therefore, the exterior member 130 may be prevented from being torn in a specific direction and torn, and the sealing of the sealing portion 137 may be stably released along the circular hole 139.
  • separator 120a positive electrode tab

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

La présente invention concerne une batterie secondaire. Selon l'invention, la batterie secondaire (100) comprend : un ensemble d'électrodes (110) comprenant une plaque d'anode (113), une plaque de cathode (115) et un séparateur (117) ; et un matériau de coque extérieure (130) doté d'une partie d'étanchéité (137), qui assure une étanchéité le long des bords de façon à recevoir l'ensemble d'électrodes (110) en son sein, et d'un trou (139) qui pénètre la partie d'étanchéité (137), du gaz étant déchargé par une rupture d'étanchéité de la partie d'étanchéité (137) autour du trou (139) lorsqu'un excès de gaz est produit à l'intérieur du matériau de coque extérieure (130), ce qui empêche une explosion de la batterie secondaire (100).
PCT/KR2013/005943 2012-07-09 2013-07-04 Batterie secondaire WO2014010872A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0074531 2012-07-09
KR1020120074531A KR20140013132A (ko) 2012-07-09 2012-07-09 이차전지

Publications (1)

Publication Number Publication Date
WO2014010872A1 true WO2014010872A1 (fr) 2014-01-16

Family

ID=49916269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2013/005943 WO2014010872A1 (fr) 2012-07-09 2013-07-04 Batterie secondaire

Country Status (2)

Country Link
KR (1) KR20140013132A (fr)
WO (1) WO2014010872A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111263990A (zh) * 2017-10-30 2020-06-09 京瓷株式会社 电化学电池和电化学电池堆

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102137756B1 (ko) * 2017-03-21 2020-07-24 주식회사 엘지화학 간단한 센싱 구조를 구비하는 배터리 모듈

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050010001A (ko) * 2002-07-18 2005-01-26 닛본 덴끼 가부시끼가이샤 필름 외장 전지 및 그 제조 방법
JP2005203262A (ja) * 2004-01-16 2005-07-28 Nec Lamilion Energy Ltd フィルム外装電気デバイス
KR20070038168A (ko) * 2004-08-11 2007-04-09 닛본 덴끼 가부시끼가이샤 필름 외장 전기 디바이스 및 그 제조 방법
JP2007311163A (ja) * 2006-05-18 2007-11-29 Nec Tokin Corp フィルム外装電気デバイス
KR20080094602A (ko) * 2007-04-20 2008-10-23 주식회사 엘지화학 안전성이 향상된 전지셀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050010001A (ko) * 2002-07-18 2005-01-26 닛본 덴끼 가부시끼가이샤 필름 외장 전지 및 그 제조 방법
JP2005203262A (ja) * 2004-01-16 2005-07-28 Nec Lamilion Energy Ltd フィルム外装電気デバイス
KR20070038168A (ko) * 2004-08-11 2007-04-09 닛본 덴끼 가부시끼가이샤 필름 외장 전기 디바이스 및 그 제조 방법
JP2007311163A (ja) * 2006-05-18 2007-11-29 Nec Tokin Corp フィルム外装電気デバイス
KR20080094602A (ko) * 2007-04-20 2008-10-23 주식회사 엘지화학 안전성이 향상된 전지셀

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111263990A (zh) * 2017-10-30 2020-06-09 京瓷株式会社 电化学电池和电化学电池堆
EP3706195A4 (fr) * 2017-10-30 2021-08-11 Kyocera Corporation Cellule électrochimique et empilement de cellules électrochimiques

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