WO2014038891A1 - Batterie secondaire - Google Patents

Batterie secondaire Download PDF

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Publication number
WO2014038891A1
WO2014038891A1 PCT/KR2013/008079 KR2013008079W WO2014038891A1 WO 2014038891 A1 WO2014038891 A1 WO 2014038891A1 KR 2013008079 W KR2013008079 W KR 2013008079W WO 2014038891 A1 WO2014038891 A1 WO 2014038891A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner sealing
sealing part
secondary battery
electrode assemblies
predetermined distance
Prior art date
Application number
PCT/KR2013/008079
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 WO2014038891A1 publication Critical patent/WO2014038891A1/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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
    • H01M50/50—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
    • 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
    • H01M50/102—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
    • 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
    • H01M50/50—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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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 for outputting 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 according to the prior art is provided with one electrode assembly (electrode group) in one exterior material.
  • one electrode assembly electrode group
  • the conventional technology since the conventional technology has only one electrode assembly (electrode group) inside one exterior material, there is a limit in increasing the production amount, and there is a problem in that there is a deviation between the produced secondary batteries.
  • Patent Document 1 KR2008-0070206 A
  • the present invention is to solve the above-described problems of the prior art, an aspect of the present invention is provided with a plurality of electrode assemblies in one outer material, the first inner sealing portion and the second spaced apart a predetermined distance between the adjacent electrode assembly An inner sealing part is formed to provide a secondary battery that can cut or fold between the first and second inner sealing parts.
  • a plurality of electrode assemblies including a positive electrode plate, a negative electrode plate, and a separator are accommodated therein, and a plurality of electrode assemblies are disposed therein, and the first electrode assembly is disposed between adjacent electrode assemblies to separate the plurality of electrode assemblies.
  • an exterior member having an inner sealing part and a second inner sealing part, wherein the first inner sealing part and the second inner sealing part are formed to be spaced apart from each other by the adjacent electrode assembly.
  • the first inner sealing portion and the second inner sealing portion spaced apart from each other by a predetermined distance between the adjacent electrode assemblies are folded.
  • the gap between the first inner sealing portion and the second inner sealing portion spaced a predetermined distance between the adjacent electrode assembly is cut.
  • 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 packaging material is heat-sealed to form the first inner sealing part and the second inner sealing part.
  • the electrode assembly is two, the first inner sealing portion and the second inner sealing portion is formed to be spaced apart a predetermined distance between the adjacent electrode assembly.
  • the electrode assembly is three, the first inner sealing portion and the second inner sealing portion so that a predetermined distance spaced between the adjacent electrode assembly of the three electrode assembly. Is formed.
  • the electrode assembly is four, and the first inner sealing portion and the second inner sealing portion so as to be spaced apart a predetermined distance between the adjacent electrode assembly of the four electrode assembly. Is formed.
  • 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
  • a method of manufacturing a secondary battery includes (A) preparing a plurality of electrode assemblies and an exterior material including a positive electrode plate, a negative electrode plate, and a separator, and (B) accommodating a plurality of the electrode assemblies in the interior of the exterior material.
  • the method may include forming a first inner sealing part and a second inner sealing part between adjacent electrode assemblies to separate the plurality of electrode assemblies from the outer cover material, wherein the first inner sealing part and the second inner sealing part are formed. It is formed to be spaced apart a predetermined distance between the adjacent electrode assembly.
  • 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 outer material is heat-sealed to form the first inner sealing part and the second inner sealing part.
  • the electrode assembly in the step (A), is two, in the step (B), the first to be spaced apart a predetermined distance between the adjacent electrode assembly A 1st inner sealing part and the said 2nd inner sealing part are formed.
  • the electrode assembly in the step (A), is three, in the step (B), between the adjacent electrode assembly of the three electrode assembly.
  • the first inner sealing part and the second inner sealing part are formed to be spaced apart by a predetermined distance.
  • the electrode assembly in the step (A), is four, in the step (B), between the adjacent electrode assembly of the four electrode assembly.
  • the first inner sealing part and the second inner sealing part are formed to be spaced apart by a predetermined distance.
  • the method further includes a positive electrode tab bonded to the positive electrode plate and protruding to the outside of the packaging material, and a negative electrode tab bonded to the negative electrode plate and protruding 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
  • a plurality of electrode assemblies are provided in one packaging material, and a first inner sealing part and a second inner sealing part spaced apart by a predetermined distance between adjacent electrode assemblies are formed to fold between the first and second inner sealing parts.
  • the secondary battery can be easily stacked.
  • by cutting the spaced apart between the first and second inner sealing portion it is possible to assemble a plurality of secondary batteries at one time, thereby increasing the productivity, there is an advantage that can reduce the deviation between the produced secondary battery.
  • 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;
  • FIG. 5 is a perspective view of the electrode assembly shown in FIG.
  • 6 to 11 is a view showing a manufacturing method of a secondary battery according to an embodiment of the present invention in the process order, and
  • FIG. 12 to 19 are perspective views illustrating a process of folding or cutting a modified example of the secondary battery illustrated in FIG. 9.
  • 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 an electrode assembly shown in Figure 1 Perspective view.
  • the secondary battery 100 includes a plurality of electrode assemblies 110 including a cathode plate 113, an anode plate 115, and a separator 117.
  • the outer material having a first inner sealing portion (135a) and the second inner sealing portion (135b) formed between the adjacent electrode assembly 110 to separate the plurality of electrode assembly (110) 130, and the first inner sealing part 135a and the second inner sealing part 135b are formed to be spaced apart by a predetermined distance between the adjacent electrode assemblies 110.
  • 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. At this time, the negative electrode plate 115 should have a large lithium ion occlusion capacity, have a high charge and discharge efficiency and excellent reversibility, and needs 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 non-coating portion and the negative electrode non-coating portion by welding, and the positive electrode tab 120a and the negative electrode tab 120b are sealed in an outer packaging material 130. It may protrude outward. 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.
  • 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 may extend 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 outer sealing part 133 of the exterior member 130. It is formed to wrap. 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 130 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 secondary battery 100 is provided with a plurality of electrode assemblies 110 is accommodated in one of the exterior material 130, the details thereof will be described later.
  • the exterior material 130 serves to receive a plurality of electrode assemblies 110.
  • the exterior material 130 may be a pouch (Pouch) is made of aluminum, as shown in Figures 3 to 4, it may be formed in a substantially rectangular parallelepiped shape.
  • the exterior material 130 may include a container 131 in which the electrode assembly 110 is accommodated together with the electrolyte and a cover 132 covering the open top surface of the container 131.
  • the exterior member 130 has an outer side of the edge of the container 131 and the edge of the cover 132 in a state in which the positive electrode tab 120a and the negative electrode tab 120b of the electrode assembly 110 accommodated therein protrude to the outside.
  • the sealing part 133 may be formed and sealed.
  • the exterior member 130 may be sealed by forming a first inner sealing part 135a and a second inner sealing part 135b between adjacent electrode assemblies 110 to separate the plurality of electrode assemblies 110.
  • the first inner sealing part 135a and the second inner sealing part 135b are formed to be spaced apart by a predetermined distance between the adjacent electrode assemblies 110.
  • the first inner sealing part 135a and the second inner sealing part 135b are formed to be spaced apart by a predetermined distance between the adjacent electrode assemblies 110, between the first and second inner sealing parts 135a and 135b.
  • the non-sealing region 137 by cutting the non-sealing region 137, a plurality of secondary batteries 100 may be assembled at a time, thereby increasing productivity and reducing variations between the produced secondary batteries 100 (FIG. 11). Reference).
  • the sealed part such as the first and second inner sealing parts 135a and 135b, the unstretched polypropylene (CPP) or polypropylene (Polypropylene, PP), etc.
  • a crack may occur and a problem of lowering insulation resistance may occur.
  • the non-sealing region 137 provided between the first and second inner sealing parts 135a and 135b instead of the first and second inner sealing parts 135a and 135b.
  • 6 to 11 are views illustrating a method of manufacturing a secondary battery according to an embodiment of the present invention in the order of process.
  • the method of manufacturing the secondary battery 100 includes (A) a plurality of electrode assemblies including the positive electrode plate 113, the negative electrode plate 115, and the separator 117 ( (B) accommodating a plurality of electrode assemblies 110 in the interior of the exterior material 130, and adjacent electrodes to separate the plurality of electrode assemblies 110 from the exterior material 130. Forming a first inner sealing portion 135a and a second inner sealing portion 135b between the assembly 110, wherein the first inner sealing portion 135a and the second inner sealing portion 135b are adjacent to each other. It is formed to be spaced apart a predetermined distance between the electrode assembly 110.
  • the electrode assembly 110 may be a winding type (refer to FIG. 5) or a stacked type (stack type) in which the positive electrode plate 113, the negative electrode plate 115, and the separator 117 are wound.
  • the positive electrode tabs 120a and the negative electrode tabs 120b may be bonded to the positive electrode plate 113 and the negative electrode plate 115, respectively, and the positive electrode tab 120a and the negative electrode tab 120b may be finally sealed. It may protrude outward.
  • both the positive electrode tab 120a and the negative electrode tab 120b protrude to one side of the exterior member 130, but the positive electrode tab 120a protrudes to one side of the exterior member 130 and the negative electrode tab 120b is the exterior member 130. ) May protrude to the other side (see FIG. 4).
  • the exterior member 130 serves to accommodate a plurality of electrode assembly 110, it may be a pouch (Pouch).
  • the exterior material 130 may include a container 131 in which the electrode assembly 110 is accommodated together with the electrolyte and a cover 132 covering the open top surface of the container 131.
  • the outer sealing part 133 and the first and second inner sealing parts 135a and 135b are formed in the exterior member 130 to accommodate the plurality of electrode assemblies 110 in the exterior member 130.
  • the outer sealing part 133 is formed on the edge of the container 131 and the edge of the cover 132. Can be formed to seal.
  • the exterior member 130 may form and seal the first inner sealing part 135a and the second inner sealing part 135b between adjacent electrode assemblies 110 to separate the plurality of electrode assemblies 110.
  • the first inner sealing part 135a and the second inner sealing part 135b are formed to be spaced apart by a predetermined distance between the adjacent electrode assemblies 110.
  • the exterior member 130 may include an adhesive layer 130a formed of unstretched polypropylene (CPP) or polypropylene (Polypropylene, PP), a metal layer formed of aluminum, or the like ( 130b) and the insulating layer 130c formed of polyethylene terephthalate (PET) resin or 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.
  • heat and pressure are applied by applying heat and pressure to the heating unit 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, hardening through the cooling process, the outer sealing portion 133 and the first and second inner sealing
  • the portions 135a and 135b are formed. Meanwhile, as illustrated in FIG.
  • the first inner sealing part 135a and the second inner sealing part 135b are formed to be spaced apart by a predetermined distance between two adjacent electrode assemblies 110. As such, since the first inner sealing part 135a and the second inner sealing part 135b are formed to be spaced apart by a predetermined distance between the adjacent electrode assemblies 110, the first inner sealing part 135a and the second inner sealing part. There is an unsealed region 137 (unsealed region) between the 135b.
  • the secondary battery 100 may be folded or cut.
  • the non-sealing region 137 existing between the first inner sealing portion 135a and the second inner sealing portion 135b spaced a predetermined distance may be folded.
  • the non-sealing region 137 existing between the first inner sealing portion 135a and the second inner sealing portion 135b spaced a predetermined distance may be cut.
  • the two secondary batteries 100 can be assembled at a time, thereby increasing productivity and reducing the deviation between the produced secondary batteries.
  • the non-sealing region 137 provided between the first and second inner sealing parts 135a and 135b, not the first and second inner sealing parts 135a and 135b, may be folded or cut. This does not occur and the insulation resistance can be prevented from falling.
  • FIG. 9 illustrates that the two electrode assemblies 110 are accommodated in one exterior member 130, but the scope of the present invention is not limited thereto, and three or more interior components of one exterior member 130 are provided.
  • the electrode assembly 110 may be accommodated.
  • 12 to 19 are perspective views illustrating a process of folding or cutting a modified example of the secondary battery illustrated in FIG. 9. Referring to this, a configuration of accommodating three or more electrode assemblies 110 in one exterior member 130 is described. Let's take a look.
  • three electrode assemblies 110 may be provided in one exterior material 130 side by side in one direction.
  • the first inner sealing part 135a and the second inner sealing part may be provided.
  • the 135b may be formed to be spaced apart by a predetermined distance between the adjacent electrode assemblies 110 among the three electrode assemblies 110.
  • two non-sealing regions 137 exist, and as illustrated in FIG. 13, the secondary battery 200 is three-layered by folding the zigzag based on the two non-sealing regions 137. Can be stacked.
  • FIG. 14 by cutting the two non-sealing regions 137, three secondary batteries 200 may be assembled at a time.
  • four electrode assemblies 110 may be provided in one exterior material 130 side by side in one direction.
  • the first inner sealing part 135a and the second inner sealing part 135b may be provided.
  • three non-sealing regions 137 exist, and as illustrated in FIG. 16, the secondary battery 300 is folded into four layers by folding the zigzag based on the three non-sealing regions 137. Can be stacked.
  • FIG. 17 by cutting three non-sealing regions 137, four secondary batteries 300 may be assembled at a time.
  • the plurality of electrode assemblies 110 are not necessarily provided side by side in one direction in one exterior material 130.
  • a total of four electrode assemblies 110 may be provided in one exterior material 130, two in one direction and another in the one direction (vertical to one direction).
  • two non-sealing regions 137 exist, and as illustrated in FIG. 19, four secondary batteries 400 may be assembled at a time by cutting two non-sealing regions 137.

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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. La batterie secondaire (100), selon la présente invention, comprend : une pluralité d'ensembles électrode (110) comprenant des plaques de cathode (113), des plaques d'anode (115), et des séparateurs (117) ; et une gaine (130) qui loge la pluralité d'ensembles électrode (110) en son sein, et qui possède une première unité de scellage côté interne (135a) et une seconde unité de scellage côté interne (135b) entre des ensembles électrode adjacents (110) de façon à séparer la pluralité d'ensembles électrode (110), la première unité de scellage côté interne (135a) et la seconde unité de scellage côté interne (135b) étant formées afin d'être séparées l'une de l'autre à une distance prédéterminée entre les ensembles électrode adjacents (110).
PCT/KR2013/008079 2012-09-06 2013-09-06 Batterie secondaire WO2014038891A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120098954A KR101915325B1 (ko) 2012-09-06 2012-09-06 이차전지
KR10-2012-0098954 2012-09-06

Publications (1)

Publication Number Publication Date
WO2014038891A1 true WO2014038891A1 (fr) 2014-03-13

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PCT/KR2013/008079 WO2014038891A1 (fr) 2012-09-06 2013-09-06 Batterie secondaire

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KR (1) KR101915325B1 (fr)
WO (1) WO2014038891A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016225160A1 (de) 2016-12-15 2018-06-21 Robert Bosch Gmbh Pouchfolie für ein Batteriezellsystem
DE102016225192A1 (de) 2016-12-15 2018-06-21 Robert Bosch Gmbh Wärmeverteiler für eine Batterie
DE102016225175A1 (de) 2016-12-15 2018-06-21 Robert Bosch Gmbh Umhüllung für ein Batteriemodul
DE102016225184A1 (de) 2016-12-15 2018-06-21 Robert Bosch Gmbh Batteriemodul mit Batteriezellsystem und Umhüllung
WO2022010256A1 (fr) * 2020-07-10 2022-01-13 주식회사 엘지에너지솔루션 Batterie secondaire comprenant une partie de décharge de gaz pour décharge de gaz et procédé de fabrication de batterie secondaire

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KR102019399B1 (ko) * 2015-11-20 2019-09-06 주식회사 엘지화학 분리 유도부를 포함하는 파우치형 전지셀
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DE102016225192A1 (de) 2016-12-15 2018-06-21 Robert Bosch Gmbh Wärmeverteiler für eine Batterie
DE102016225175A1 (de) 2016-12-15 2018-06-21 Robert Bosch Gmbh Umhüllung für ein Batteriemodul
DE102016225184A1 (de) 2016-12-15 2018-06-21 Robert Bosch Gmbh Batteriemodul mit Batteriezellsystem und Umhüllung
US10693110B2 (en) 2016-12-15 2020-06-23 Robert Bosch Gmbh Pouch film for a battery cell system
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WO2022010256A1 (fr) * 2020-07-10 2022-01-13 주식회사 엘지에너지솔루션 Batterie secondaire comprenant une partie de décharge de gaz pour décharge de gaz et procédé de fabrication de batterie secondaire

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