WO2024136606A1 - 실링 장치 및 그에 의해 실링된 파우치형 이차 전지 - Google Patents
실링 장치 및 그에 의해 실링된 파우치형 이차 전지 Download PDFInfo
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- WO2024136606A1 WO2024136606A1 PCT/KR2023/021481 KR2023021481W WO2024136606A1 WO 2024136606 A1 WO2024136606 A1 WO 2024136606A1 KR 2023021481 W KR2023021481 W KR 2023021481W WO 2024136606 A1 WO2024136606 A1 WO 2024136606A1
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- Prior art keywords
- sealing
- terrace
- thin
- protrusion
- width
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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
- H01M50/105—Pouches or flexible bags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
- B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
- B29C66/4332—Casing-in, i.e. enclosing an element between two sheets by an outlined seam by folding a sheet over
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/549—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles said hollow-preforms being interconnected during their moulding process, e.g. by a hinge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
- B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
- B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
- B29C66/92611—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by controlling or regulating the gap between the joining tools
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
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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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/133—Fin-type joints, the parts to be joined being flexible
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/345—Progressively making the joint, e.g. starting from the middle
- B29C66/3452—Making complete joints by combining partial joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3468—Batteries, accumulators or fuel cells
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- 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
- Lithium secondary batteries generally manufacture positive and negative electrodes by applying an electrode active material slurry to the positive electrode current collector and negative electrode current collector, and stack them on both sides of a separator to form an electrode assembly of a predetermined shape. Afterwards, it is manufactured by storing the electrode assembly in a pouch and injecting an electrolyte solution.
- Secondary batteries are classified into pouch type and can type, etc., depending on the material of the case that accommodates the electrode assembly.
- pouch-type secondary batteries are generally manufactured by forming an accommodating part in a flexible pouch film, storing an electrode assembly in the accommodating part, injecting an electrolyte solution, and then sealing the terrace area around the accommodating part.
- One problem to be solved by the present invention is to provide a sealing device that forms a sealing portion with high sealing strength and fracture delay effect.
- Another problem to be solved by the present invention is to provide a pouch-type secondary battery including a sealing portion with high sealing strength and rupture delay effect.
- the sealing device can seal a pouch-type battery case including a receiving portion in which an electrode assembly is accommodated and a terrace portion located around the receiving portion.
- the sealing device may include a pair of sealing tools configured to face each other with the terrace part in between and to adjust a mutual distance.
- Each sealing tool includes a protrusion protruding toward the terrace portion; And it may include a depression formed to be stepped from the protrusion.
- the distance between the protrusions of the pair of sealing tools may be adjusted to be 68% to 82% of the initial thickness of the terrace part.
- the protrusion may be located on the innermost side of the sealing tool.
- the protrusions and recesses may be arranged alternately with respect to the width direction of the sealing tool.
- the distance between the recessed parts of the pair of sealing tools may be adjusted to be 86% to 99% of the initial thickness of the terrace part.
- the width of the depression may be smaller than the width of the innermost protrusion.
- the plurality of protrusions may have a larger width as they are located inside the width direction of the sealing tool.
- the single protrusion may be located inside the depression.
- the distance between the recessed parts of the pair of sealing tools may be adjusted to be 78% to 92% of the initial thickness of the terrace part.
- Each sealing tool includes a first pressing area that seals the inner surface of the terrace portion and an insulating member surrounding an electrode lead connected to the electrode assembly to each other; It may include a second pressing area that seals the inner surfaces of the terrace portions.
- the protrusions and depressions may be included in the second pressing area.
- a pouch-type secondary battery includes an electrode assembly; And it may include a pouch-type battery case having a receiving portion for accommodating the electrode assembly and a terrace portion located around the receiving portion.
- the terrace portion includes a sealing portion; And it may include a gas pocket portion located between the sealing portion and the receiving portion.
- the sealing portion includes a thin-part extending along an edge of the sealing portion; And it may include a thick-part that extends parallel to the thin part and is thicker than the thin part. The thickness of the thin portion may be 68% to 82% of the thickness of the gas pocket portion.
- the thin part may be located on the innermost side of the sealing part.
- the thin portion and the rear portion may be formed alternately with respect to the width direction of the sealing portion.
- the thickness of the rear portion may be 86% to 99% of the thickness of the gas pocket portion.
- the plurality of thin portions include: a first thin portion; And it may include a second thin part located outside the first thin part and having a narrower width than the first thin part.
- the width of the posterior portion may be smaller than the width of the innermost thin portion.
- the plurality of thin portions may have a larger width as they are located inside the sealing portion in the width direction.
- the single thin portion may be located inside the rear portion in the width direction of the sealing portion.
- the thickness of the rear portion may be 78% to 92% of the thickness of the gas pocket portion.
- the pouch-type secondary battery includes an electrode lead connected to the electrode assembly and protruding to the outside of the terrace portion; And it may further include an insulating member that insulates the electrode lead and the battery case.
- the sealing portion includes a first sealing region where the inner surface of the terrace portion and the insulating member are sealed; And it may include a second sealing area in which inner surfaces of the terrace portion are sealed to each other. The thin portion and the rear portion may be included in the second sealing area.
- the sealing strength of the sealing portion formed in the pouch-type battery case is increased, thereby preventing or delaying the occurrence of abnormal vents.
- FIG. 1 is an assembly diagram of a pouch-type secondary battery according to an embodiment of the present invention.
- Figure 2 is a plan view of a pouch-type secondary battery according to an embodiment of the present invention.
- Figure 3 is a perspective view of a sealing device according to an embodiment of the present invention.
- FIGS. 4A and 4B are enlarged views of the second pressing area and its surroundings of the sealing device shown in FIG. 3.
- Figure 5 is a schematic diagram for explaining the operation of a sealing device according to an embodiment of the present invention.
- FIG. 6 is an enlarged cross-sectional view of the sealing tool shown in FIG. 5 and the sealing portion thereby formed in the pouch-type battery case.
- Figure 7 is an enlarged cross-sectional view of a sealing tool according to another embodiment of the present invention and a sealing portion formed thereby in a pouch-type battery case.
- Figures 8a to 8c are graphs summarizing the results of experiments to confirm the effectiveness of the sealing device according to an embodiment of the present invention.
- FIG. 1 is an assembly diagram of a pouch-type secondary battery according to an embodiment of the present invention.
- the pouch-type secondary battery 1 (hereinafter referred to as 'secondary battery') according to an embodiment of the present invention may be a secondary battery sealed by a sealing device according to the present invention.
- the secondary battery 1 described in this specification may be in a state at a specific point during the manufacturing process or may be in a final completed state, and may be appropriately interpreted depending on the context or need.
- the secondary battery 1 may include an electrode assembly 10 and a pouch-type battery case 20 (hereinafter, “battery case”).
- the electrode assembly 10 may be formed by alternately stacking an anode and a cathode with a separator in between. That is, the electrode assembly 10 may include a plurality of electrodes and a separator interposed between the plurality of electrodes to insulate the plurality of electrodes from each other.
- the electrode assembly 10 may be accommodated together with an electrolyte in the battery case 20, and more specifically, in the receiving portion 22, which will be described later.
- the electrode assembly 10 may be provided in various types such as a stack type, a jelly roll type, and a stack and fold type, and the type of the electrode assembly 10 is not limited.
- the electrode assembly 10 may include an electrode tab 11 .
- the electrode tab 11 is connected to the anode and cathode of the electrode assembly 10, respectively, and protrudes outward from the electrode assembly 10 to serve as a path through which electrons can move between the inside and outside of the electrode assembly 10. there is.
- the electrode tab 11 may be formed by cutting the uncoated portion of the electrode current collector or by connecting a separate conductive member to the uncoated portion using ultrasonic welding or the like.
- the electrode tab 11 may include a positive electrode tab 11a connected to the positive electrode and a negative electrode tab 11b connected to the negative electrode.
- the anode tab 11a and the cathode tab 11b may protrude in different directions from the electrode assembly 10, but are not limited to this and may protrude in various directions, such as protruding side by side in the same direction from one side.
- An electrode lead 12 that supplies electricity to the outside of the battery cell 1 may be connected to the electrode tab 11 of the electrode assembly 10. Additionally, a portion of the electrode lead 12 may be surrounded by an insulating member 14 .
- the insulating member 14 may be sealed together with the first case 20a and the second case 20b. Accordingly, the insulating member 14 can insulate the electrode lead 12 and the battery case 20 and maintain the seal of the battery case 20.
- insulating tape is often used because it is easy to attach to the electrode lead 12 and has a relatively thin thickness. However, it is not limited to this and various members can be used as long as they can insulate the electrode lead 12. there is.
- the electrode lead 12 may be connected to the electrode tab 11 and the other end may protrude to the outside of the battery case 20 .
- the electrode lead 12 may include a positive electrode lead 12a connected to the positive electrode tab 11a and a negative electrode lead 12b connected to the negative electrode tab 11b.
- the electrode lead 12 may electrically connect the electrode assembly 10 to the outside. Additionally, since the positive electrode tab 11a and the negative electrode tab 11b are formed to protrude in various directions, the positive electrode lead 12a and the negative electrode lead 12b may each extend in various directions.
- the battery case 20 can accommodate the electrode assembly 10 therein and can be formed by molding a laminate sheet. For example, when a flexible laminate sheet is drawn and molded using a die and a punch, a portion of the sheet is stretched to form a receiving portion 22 having a pocket-shaped receiving space, thereby manufacturing the battery case 20. there is.
- the configuration of the receiving portion 22 is not limited to this, and may be formed in a manner different from that shown in the drawing.
- the battery case 20 may be in a state at a specific point in time during the manufacturing process or may be in a final completed state. That is, the description of the battery case 20 can include both a sealed state as shown in FIG. 2 or an unfolded state as shown in FIG. 1, and can be appropriately interpreted depending on the context or need.
- the battery case 20 may accommodate the electrode assembly 10 and be sealed so that a portion of the electrode lead 12 is exposed.
- the battery case 20 may include a first case 20a and a second case 20b that are sealed to each other with the electrode assembly 10 interposed therebetween.
- the receiving portion 22 may be formed in at least one of the first case 20a and the second case 20b. And, the surrounding area of the receiving part 22 may form the terrace part 23. That is, the battery case 20 may include an accommodating portion 22 and a terrace portion 23 located outside the accommodating portion 22.
- the first case 20a and the second case 20b may be connected to each other by the folding portion 21.
- the first case 20a and the second case 20b may be manufactured separately.
- the accommodating portion 22 may define a receiving space capable of accommodating the electrode assembly 10.
- the receiving portion 22 may have a pocket shape.
- the receiving portions 22 of the pair of cases 20a and 20b are arranged to face each other and can accommodate the electrode assembly 10 together. That is, the receiving portions 22 of the pair of cases 20a and 20b may be arranged to face each other to define a receiving space in which the electrode assembly 10 is accommodated. In this case, compared to the case where the receiving portion 22 is formed only in one of the pair of cases 20a and 20b, the electrode assembly 20 is thick and can accommodate the electrode assembly 10 with a large capacity. .
- the first case 20a and the second case 20b may be connected by a folding portion 21.
- a portion of the folding portion (21) is connected to the receiving portion (22) of the first case (20a) and the receiving portion (22) of the second case (20b).
- another part of the folding portion 21 may be located between the terrace portion 23 of the first case 20a and the terrace portion 23 of the second case 20b.
- the first case 20a and the second case 20b can face each other.
- the folding portion 21 may extend parallel to the overall length direction of the electrode assembly 10, but is not limited thereto.
- Each case (20a) (20b) may include a terrace portion (23) located around the receiving portion (22).
- the terrace portion 23 may be formed around the four sides of the receiving portion 22.
- the terrace part 23 is located around three sides of the four sides of the receiving part 22 excluding the folding part 21 side. can be formed.
- the terrace portions 23 of the first case 20a and the second case 20b may contact each other.
- the insulating member 14 of the electrode assembly 10 may be located between the terrace portions 23 of the pair of cases 20a and 20b.
- Figure 2 is a plan view of a pouch-type secondary battery according to an embodiment of the present invention.
- the terrace portion 23 may include a sealing portion 24.
- the sealing portion 24 may be a portion of the first case 20a and the second case 20b that are sealed together by heat fusion or the like while they are in contact with each other.
- the sealing portion 24 may be formed by sealing the outer portions of the terrace portions 23 of the pair of cases 20a and 20b with each other.
- the width of the sealing portion 24 may be formed to be approximately constant, but is not limited thereto.
- the sealing portion 24 includes a first sealing region 241 in which the inner surface of the terrace portion 23 and the insulating member 14 are sealed, and a second sealing region 242 in which the inner surfaces of the terrace portion 23 are sealed with each other. It can be included.
- the second sealing area 242 may be located on both sides with the first sealing area 241 in between. Both second sealing areas 242 may extend to be inclined or rounded with respect to the extension direction of the first sealing area 241 . Both second sealing areas 242 may extend in different directions.
- the extension direction of each second sealing area 242 is not constant and may vary in the middle. However, it is not limited to this, and it is possible for the second sealing area 242 and the first sealing area 241 to extend in parallel.
- the first sealing area 242 may be formed by fusion of a polymer layer (e.g., polypropylene) forming the innermost layer of each of the first case 20a and the second case 20b to the insulating member 14. there is.
- the second sealing area 242 may be formed by fusion of polymer layers (eg, polypropylene) forming the innermost layer of each of the first case 20a and the second case 20b.
- the terrace portion 23 may include a gas pocket portion 25 located between the sealing portion 24 and the receiving portion 22.
- the gas pocket portion 25 may be a portion that is not sealed when the first case 20a and the second case 20b are in contact with each other.
- the gas pocket portion 25 is located on a portion of the inner side of the terrace portion 23 of the pair of cases 20a and 20b, and defines a pocket space in communication with the accommodating space of the accommodating portion 22. can do.
- the shape of the gas pocket portion 25 is not limited.
- Some of the gas generated due to abnormal operation of the electrode assembly 10 may flow into the gas pocket portion 25 from the receiving portion 22. Therefore, it is possible to sufficiently prevent or delay an increase in the internal pressure of the battery case 20 due to the gas.
- the sealing portion 24 may include a pattern to improve sealing strength.
- the sealing part 24 includes a thin-part 243 extending along the edge of the sealing part 24, extending parallel to the thin part 243 and thicker than the thin part 243. It may include a thick-part 244 (see FIG. 6).
- the thin portion 243 may be formed by being pressed by the protrusion 121 of the sealing tool 100, which will be described later.
- the rear portion 244 may be formed by being pressed by the recessed portion 122 of the sealing tool 100, which will be described later. That is, the thin portion 243 may be a portion formed by pressing relatively more strongly than the rear portion 244. Accordingly, the sealing strength of the thin portion 243 may be greater than that of the rear portion 244.
- the sealing portion 24 may be discontinuously fractured due to a difference in sealing strength between the thin portion 243 and the rear portion 244. That is, the fracture path or peeling path of the polymer layer forming the innermost layer of the sealing portion 24 can be increased. As a result, compared to the case where the sealing part 24 is continuously broken, the overall sealing strength of the sealing part 24 can be improved, and venting of the gas can be delayed.
- the thin portion 243 and the rear portion 244 may be formed alternately in the width direction of the sealing portion 24 .
- the shortest path through which the gas in the battery case 20 breaks the sealing portion 23 and is vented may be parallel to the width direction of the sealing portion 23.
- a plurality of thin parts may be located at predetermined intervals on such a path. As a result, the sealing strength of the sealing portion 24 can be increased and fracture can be effectively delayed.
- the thin portion 243 and the rear portion 244 may be included in the second sealing area 242 of the sealing portion 24 .
- the thin portion 243 and the rear portion 244 may not be included in the first sealing area 241 of the sealing portion 24 . That is, the first sealing area 241 may be formed flat.
- the first sealing area 241 may include a thin portion 243 and a rear portion 244.
- the thin portion 243 and the posterior portion 244 will be described in more detail later.
- Figure 3 is a perspective view of a sealing device according to an embodiment of the present invention
- Figures 4a and 4b are enlarged views of the second pressing area and its surroundings of the sealing device shown in Figure 3
- Figure 5 is an enlarged view of the sealing device according to the present invention. This is a schematic diagram for explaining the operation of a sealing device according to an embodiment of.
- the sealing device according to an embodiment of the present invention can seal the battery case 20, more specifically, the terrace portion 23 of the secondary battery 1.
- the sealing device may include a pair of sealing tools 100 that face each other across the terrace portion 23 of the battery case 20 and are configured to adjust the mutual distance. A portion of the terrace portion 23 may be compressed and sealed between a pair of sealing tools 100, and a sealing portion 24 may be formed. Adjustment of the distance between a pair of sealing tools 100 may be performed by a driving device including a linear actuator or a motor, and since this is a well-known technology, description thereof will be omitted.
- Each sealing tool 100 includes a first pressing area 110 that seals the inner surface of the terrace part 23 and the insulating member 14, and a second pressing area 120 that seals the inner surface of the terrace part 23 with each other.
- the second pressure area 120 may be located on both sides with the first pressure area 110 in between. Both second press areas 120 may extend to be inclined or rounded with respect to the extension direction of the first press area 110 . Both second pressure areas 120 may extend in different directions. The extension direction of each second pressure area 120 is not constant and may vary in the middle. However, it is not limited to this, and it is also possible for the second press area 120 and the first press area 110 to extend in parallel.
- One of the second pressure regions 120 (120A) may be relatively long, and the other one (120B) may be relatively short.
- the sealing tool 100 may include a pattern structure to improve the sealing strength of the sealing portion 24.
- the sealing tool 100 may include a protrusion 121 protruding toward the terrace portion 23 and a depression 122 formed to be stepped from the protrusion 121.
- the protrusion 121 and the depression 122 may extend parallel to each other.
- the protrusions 121 and depressions 122 may be formed alternately in the width direction of the sealing tool 100. As a result, the sealing strength of the sealing portion 24 formed on the terrace portion 23 can be increased and fracture can be effectively delayed.
- the protrusion 121 and the depression 122 may be included in the second pressing area 120 of the sealing tool 100.
- the protrusion 121 and the depression 122 may not be included in the first pressing area 110 of the sealing tool 100. That is, the first pressure area 110 may be formed flat.
- the first pressure area 110 may include a protrusion 121 and a depression 122.
- the protrusion 121 and the depression 122 will be described in more detail later.
- FIG. 6 is an enlarged cross-sectional view of the sealing tool shown in FIG. 5 and the sealing portion thereby formed in the pouch-type battery case.
- the portion pressed by the protrusion 121 may be formed as a thin portion 243, and the portion pressed by the recessed portion 122 may be formed as a rear portion 244. It can be.
- the protrusions 121 and depressions 122 may be arranged alternately with respect to the width direction of the sealing tool 100.
- a plurality of protrusions 121 may be provided, and the recessed portion 122 may be provided with at least one protrusion 121 . That is, each depression 122 may be located between the protrusions 121.
- the thin portion 243 and the rear portion 244 may be formed alternately with respect to the width direction of the sealing portion 24.
- a plurality of thin portions 243 may be formed, and at least one rear portion 244 may be provided. That is, each rear portion 244 may be located between the thin portions 243.
- a protrusion 121 may be located on the innermost side of the sealing tool 100.
- the inside of the sealing tool 100 may refer to the side closer to the receiving portion 22 (see FIG. 5) of the battery case 20 in the width direction of the sealing tool 100.
- the thin part 243 may be located on the innermost side of the sealing part 24.
- the inside of the sealing part 24 may mean the side closer to the receiving part 22 (see FIG. 5) in the width direction of the sealing part 24.
- the plurality of protrusions 121 of the sealing tool 100 may include a first protrusion 121a and a second protrusion 121b located outside the first protrusion 121a.
- the first protrusion 121a may be located on the innermost side of the sealing tool 100 and may be called the innermost protrusion.
- the plurality of protrusions 121 may further include a third protrusion 121c located outside the second protrusion 121b. If necessary, the plurality of protrusions 121 may further include a fourth protrusion, a fifth protrusion, etc.
- the plurality of protrusions 121 may have a larger width as they are located inside the sealing tool 100 in the width direction.
- the width W11 of the first protrusion 121a may be larger than the width W12 of the second protrusion 121b.
- the width W12 of the second protrusion 121b may be larger than the width W13 of the third protrusion 121c.
- the width W11 of the first protrusion 121a is 30% of the width of the sealing tool 100
- the width W12 of the second protrusion 121b is 20% of the width of the sealing tool 100.
- the width W13 of the third protrusion 121c may be 10% of the width of the sealing tool 100.
- the width of the sealing tool 100 may mean the width of the portion overlapping the sealing portion 24 (for example, W11+W2+W12+W2+W13).
- the plurality of depressions 122 may have a constant width W2.
- the width W2 of each depression 122 may be smaller than the width W11 of the first protrusion 121a.
- the plurality of thin parts 243 of the sealing part 24 may include a first thin part 243a and a second thin part 243b located outside the first thin part 243a.
- the first thin portion 243a may be located on the innermost side of the sealing portion 24 and may be named the innermost thin portion.
- the plurality of thin parts 243 may further include a third thin part 243c located outside the second thin part 243b. If necessary, the plurality of thin parts 243 may further include a fourth thin part, a fifth thin part, etc.
- the plurality of thin portions 243 may have a larger width as they are located inside the sealing portion 24 in the width direction.
- the width W11 of the first thin portion 243a may be larger than the width W12 of the second thin portion 243b.
- the width W12 of the second thin portion 243b may be larger than the width W13 of the third thin portion 243c.
- the width W11 of the first thin portion 243a is 30% of the width of the sealing portion 24, and the width W12 of the second thin portion 243b is 20% of the width of the sealing portion 24.
- the width W13 of the third thin portion 243c may be 10% of the width of the sealing portion 24.
- the width of the sealing portion 24 may mean the width of the portion pressed by the sealing tool 100 (for example, W11+W2+W12+W2+W13).
- the plurality of depressions 122 may have a constant width W2.
- the width W2 of each depression 122 may be smaller than the width W11 of the first protrusion 121a.
- the width of the thin portion 243 located inside the sealing portion 24 having a limited width can be increased, thereby effectively delaying the rupture of the sealing portion 24. This is because the more the plurality of thin portions 243 are located on the inside, the stronger the fracture delay effect due to their width is exerted.
- the distance t1 between the protrusions 121 of the pair of sealing tools 100 is the initial thickness of the terrace portion 23 ( It can be adjusted to be 68% to 82% of t0).
- the initial thickness (t0) of the terrace portion 23 may be based on measurement when the terrace portion 23 of the first case 20a and the terrace portion 23 of the second case 20b are in close contact. there is. That is, the initial thickness t0 of the terrace portion 23 may mean the sum of the thickness of the terrace portion 23 of the first case 20a and the thickness of the terrace portion 23 of the second case 20b. You can.
- the thickness (t1) of the thin portion (243) of the sealing portion (24) formed by pressing the terrace portion (23) by the pair of sealing tools (100) is equal to the thickness (t0) of the gas pocket portion (25). It may be 68% to 82% of. Since the gas pocket portion 25 is an unsealed portion, it may have the same thickness as the initial thickness t0 of the terrace portion 23. The thickness t0 of the gas pocket portion 25 may be based on the measurement in a close contact state so that no space is created within the gas pocket portion 25.
- the thin portion 243 of the sealing portion 24 can have sufficiently strong sealing strength, and venting of gas can be effectively delayed. If the distance t1 between the protrusions 121 of a pair of sealing tools 100 is less than 68% of the initial thickness t0 of the terrace portion 23, the sealing portion 24 may be excessively pressed and broken. there is. Conversely, if the distance t1 between the protrusions 121 of a pair of sealing tools 100 is smaller than 82% of the initial thickness t0 of the terrace portion 23, it may be difficult to achieve sufficient sealing strength.
- the distance t2 between the recessed portions 122 of the pair of sealing tools 100 is the initial thickness of the terrace portion 23. It can be adjusted to be 86% to 99% of (t0).
- the thickness (t2) of the rear portion (244) of the sealing portion (24) formed by pressing the terrace portion (23) by the pair of sealing tools (100) is equal to the thickness (t0) of the gas pocket portion (25). It may be 86% to 99% of.
- the rear portion 243 of the sealing portion 24 can also have a predetermined sealing strength, and venting of gas can be further delayed. If the distance (t2) between the recessed portions 122 of a pair of sealing tools 100 is less than 86% of the initial thickness (t0) of the terrace portion 23, the distance between the protruding portion 121 and the recessed portion 122 Since the step becomes too small, the sealing strength of the thin portion 243 and the rear portion 244 can be similar. That is, it may be difficult to obtain the vent delay effect that can be achieved due to the difference in sealing strength between the thin portion 243 and the rear portion 244. Conversely, if the distance (t2) between the recessed portions (122) of the pair of sealing tools (100) is greater than 99% of the initial thickness (t0) of the terrace portion (23), sealing of the rear portion (244) may not be performed properly. You can.
- Figure 7 is an enlarged cross-sectional view of a sealing tool according to another embodiment of the present invention and a sealing portion formed thereby in a pouch-type battery case.
- the sealing tool 100 may include a dam structure to improve the sealing strength of the sealing portion 24.
- the single protrusion 121 may be located inside the depression 122.
- the single protrusion 121 may be located on the innermost side of the sealing tool 100.
- the protrusion 121 may have sufficient width.
- the width W1' of the protrusion 121 may be 40% of the width of the sealing tool 100.
- the width W2' of the depression 122 may be larger than the width W1' of the protrusion 121.
- the sealing portion 24 may include a dam structure to improve sealing strength.
- the single thin portion 243 may be located medial to the rear portion 244 .
- the single thin portion 243 may be located on the innermost side of the sealing portion 24.
- the thin portion 243 may have sufficient width.
- the width W1' of the thin portion 243 may be 40% of the width of the sealing portion 24.
- the width W2' of the rear portion 244 may be greater than the width W1' of the thin portion 243.
- the distance t1 between the protrusions 121 of the pair of sealing tools 100 is the initial thickness of the terrace portion 23 ( It can be adjusted to be 68% to 82% of t0). Accordingly, the thickness t1 of the thin portion 243 of the sealing portion 24 may be 68% to 82% of the thickness t0 of the gas pocket portion 25. This is the same numerical range as the previously described embodiment.
- the distance t2' between the recessed portions 122 of the pair of sealing tools 100 is the initial thickness of the terrace portion 23 ( It can be adjusted to be 78% to 92% of t0). Accordingly, the thickness t2 of the rear portion 244 of the sealing portion 24 may be 78% to 92% of the thickness t0 of the gas pocket portion 25.
- Figures 8a to 8c are graphs summarizing the results of experiments to confirm the effectiveness of the sealing device according to an embodiment of the present invention.
- Figure 8a is an experimental graph showing the tensile force required to peel off the sealing portion sealed by the sealing tool according to an embodiment of the present invention by displacement in the width direction.
- Figure 8b is an experimental graph showing the tensile force required to peel off a sealing portion sealed by a general sealing tool (comparative example) having a smooth sealing area, by displacement in the width direction.
- FIG. 8A Compared to FIG. 8B, it can be seen in FIG. 8A that a peak that prevents fracture occurs repeatedly when the sealing portion is peeled. That is, compared to the case where the sealing part is peeled off continuously, the sealing tool 100 according to the present invention increases the peeling path of the sealing part, and it can be confirmed that high tensile force is required several times to completely peel off the sealing part. That is, it can be confirmed that the total amount of tensile force required for complete peeling or fracture of the sealing part formed by the sealing tool 100 according to the present invention is greater than that of the sealing part formed by a general sealing tool.
- Figure 8c is an experimental graph showing the pressure range in which each of the sealing part for Figure 8a and the sealing part for Figure 8b is completely broken.
- Insulating member 20 Pouch-type battery case
- first sealing area 242 second sealing area
- protrusion 122 depression
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (20)
- 전극 조립체가 수용된 수용부와, 상기 수용부의 둘레에 위치한 테라스부를 포함하는 파우치형 전지 케이스를 실링시키는 실링 장치에 있어서,상기 테라스부를 사이에 두고 서로 마주보며 상호 거리가 조절되도록 구성된 한 쌍의 실링툴을 포함하고,각 실링툴은,상기 테라스부를 향해 돌출된 돌출부; 및상기 돌출부와 단차지게 형성된 함몰부를 포함하며,상기 한 쌍의 실링툴이 상기 테라스부를 가압할 때, 상기 한 쌍의 실링툴의 상기 돌출부 간 거리는 상기 테라스부의 초기 두께의 68% 내지 82%가 되도록 조절되는 실링 장치.
- 제 1 항에 있어서,상기 실링툴의 최내측에는 상기 돌출부가 위치하는 실링 장치.
- 제 1 항에 있어서,상기 돌출부 및 함몰부는, 상기 실링툴의 폭 방향에 대해 서로 교번적으로 배치되는 실링 장치.
- 제 3 항에 있어서,상기 한 쌍의 실링툴이 상기 테라스부를 가압할 때, 상기 한 쌍의 실링툴의 상기 함몰부 간 거리는 상기 테라스부의 초기 두께의 86% 내지 99%가 되도록 조절되는 실링 장치.
- 제 3 항에 있어서,복수개의 상기 돌출부는,제1돌출부; 및상기 제1돌출부보다 외측에 위치하며, 상기 제1돌출부보다 좁은 폭을 갖는 제2돌출부를 포함하는 실링 장치.
- 제 3 항에 있어서,상기 함몰부의 폭은, 최내측 돌출부의 폭보다 작은 실링 장치.
- 제 3 항에 있어서,복수개의 상기 돌출부는, 상기 실링툴의 폭 방향에 대해 내측에 위치할수록 큰 폭을 갖는 실링 장치.
- 제 1 항에 있어서,단일의 상기 돌출부는, 상기 함몰부보다 내측에 위치한 실링 장치.
- 제 8 항에 있어서,상기 한 쌍의 실링툴이 상기 테라스부를 가압할 때, 상기 한 쌍의 실링툴의 상기 함몰부 간 거리는 상기 테라스부의 초기 두께의 78% 내지 92%가 되도록 조절되는 실링 장치.
- 제 1 항에 있어서,각 실링툴은,상기 테라스부의 내면과, 상기 전극 조립체에 연결된 전극 리드를 둘러싼 절연 부재를 서로 실링시키는 제1가압 영역;상기 테라스부의 내면끼리 실링시키는 제2가압 영역을 포함하며,상기 돌출부 및 함몰부는 상기 제2가압 영역에 포함된 실링 장치.
- 전극 조립체; 및상기 전극 조립체를 수용하는 수용부와, 상기 수용부의 둘레에 위치한 테라스부를 갖는 파우치형 전지 케이스를 포함하고,상기 테라스부는,실링부; 및상기 실링부와 상기 수용부의 사이에 위치한 가스 포켓부를 포함하며,상기 실링부는,상기 실링부의 가장자리를 따라 연장되는 박부(thin-part); 및상기 박부와 나란하게 연장되며 상기 박부보다 두꺼운 후부(thick-part)를 포함하고,상기 박부의 두께는, 상기 가스 포켓부의 두께의 68% 내지 82% 인 파우치형 이차 전지.
- 제 11 항에 있어서,상기 실링부의 최내측에는 상기 박부가 위치하는 파우치형 이차 전지.
- 제 11 항에 있어서,상기 박부 및 후부는, 상기 실링부의 폭 방향에 대해 서로 교번적으로 형성되는 파우치형 이차 전지.
- 제 13 항에 있어서,상기 후부의 두께는, 상기 가스 포켓부의 두께의 86% 내지 99% 인 파우치형 이차 전지.
- 제 13 항에 있어서,복수개의 상기 박부는,제1박부; 및상기 제1박부보다 외측에 위치하며, 상기 제1박부보다 좁은 폭을 갖는 제2박부를 포함하는 파우치형 이차 전지.
- 제 13 항에 있어서,상기 후부의 폭은, 최내측 박부의 폭보다 작은 파우치형 이차 전지.
- 제 13 항에 있어서,복수개의 상기 박부는, 상기 실링부의 폭 방향에 대해 내측에 위치할수록 큰 폭을 갖는 파우치형 이차 전지.
- 제 11 항에 있어서,단일의 상기 박부는, 상기 실링부의 폭 방향에 대해 상기 후부보다 내측에 위치한 파우치형 이차 전지.
- 제 18 항에 있어서,상기 후부의 두께는, 상기 가스 포켓부의 두께의 78% 내지 92% 인 파우치형 이차 전지.
- 제 11 항에 있어서,상기 전극 조립체에 연결되며 상기 테라스부의 외부로 돌출되는 전극 리드; 및상기 전극 리드와 상기 전지 케이스를 절연시키는 절연 부재를 더 포함하고,상기 실링부는,상기 테라스부의 내면과 상기 절연 부재가 실링된 제1실링 영역; 및상기 테라스부의 내면끼리 실링된 제2실링 영역을 포함하고,상기 박부 및 후부는, 상기 제2실링 영역에 포함된 파우치형 이차 전지.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23907889.2A EP4621947A4 (en) | 2022-12-22 | 2023-12-22 | SEALING DEVICE AND SECONDARY BATTERY OF THE POUCH TYPE SEALED BY IT |
| CN202380086539.0A CN120380646A (zh) | 2022-12-22 | 2023-12-22 | 密封设备及由其密封的袋型二次电池 |
| JP2025536852A JP2026500395A (ja) | 2022-12-22 | 2023-12-22 | シール装置及びそれによりシールされたパウチ型二次電池 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2022-0182074 | 2022-12-22 | ||
| KR20220182074 | 2022-12-22 | ||
| KR1020230188447A KR20240100293A (ko) | 2022-12-22 | 2023-12-21 | 실링 장치 및 그에 의해 실링된 파우치형 이차 전지 |
| KR10-2023-0188447 | 2023-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024136606A1 true WO2024136606A1 (ko) | 2024-06-27 |
Family
ID=91589597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/021481 Ceased WO2024136606A1 (ko) | 2022-12-22 | 2023-12-22 | 실링 장치 및 그에 의해 실링된 파우치형 이차 전지 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4621947A4 (ko) |
| JP (1) | JP2026500395A (ko) |
| CN (1) | CN120380646A (ko) |
| WO (1) | WO2024136606A1 (ko) |
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| KR100676989B1 (ko) * | 2000-01-26 | 2007-01-31 | 다이니폰 인사츠 가부시키가이샤 | 히트실링장치, 히트실링방법, 엠보스성형방법, 워크압압장치 및 워크 |
| JP2013157286A (ja) * | 2012-01-31 | 2013-08-15 | Toppan Printing Co Ltd | 蓄電デバイス |
| KR20190038094A (ko) * | 2017-09-29 | 2019-04-08 | 에스케이이노베이션 주식회사 | 이차 전지의 파우치 성형 장치 |
| KR20220048453A (ko) * | 2020-10-12 | 2022-04-19 | 주식회사 엘지에너지솔루션 | 전지 케이스 실링 장치 및 이를 이용하여 제조되는 이차 전지 |
| KR20220060805A (ko) * | 2020-11-05 | 2022-05-12 | 주식회사 엘지에너지솔루션 | 탭가이드를 포함하는 전극탭 용접장치 및 이에 의한 전극탭 용접방법 |
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| US6632538B1 (en) * | 1998-02-05 | 2003-10-14 | Dai Nippon Printing Co., Ltd. | Sheet for cell and cell device |
| JP4498514B2 (ja) * | 2000-01-18 | 2010-07-07 | 大日本印刷株式会社 | 電池用容器 |
| JP4075534B2 (ja) * | 2002-08-30 | 2008-04-16 | 日産自動車株式会社 | ラミネート二次電池、組電池モジュール、組電池ならびにこの電池を搭載した電気自動車 |
| JP4792945B2 (ja) * | 2005-01-28 | 2011-10-12 | 日産自動車株式会社 | 超音波接合装置および接合構造体 |
| CN100522449C (zh) * | 2005-01-28 | 2009-08-05 | 日产自动车株式会社 | 超声波接合装置及接合构造体 |
| JP5025277B2 (ja) * | 2007-02-13 | 2012-09-12 | 株式会社東芝 | 電池の製造方法 |
| KR102042018B1 (ko) * | 2014-02-27 | 2019-11-07 | 주식회사 엘지화학 | 실링 라인이 형성되어 있는 외주면 실링부를 포함하는 전지셀, 및 이를 생산하기 위한 전지셀 실링장치 |
| JP7187927B2 (ja) * | 2018-09-25 | 2022-12-13 | 大日本印刷株式会社 | 蓄電デバイス |
| JP2021174629A (ja) * | 2020-04-22 | 2021-11-01 | Tdk株式会社 | 非水電解質二次電池及びその製造方法 |
| KR102796174B1 (ko) * | 2020-09-07 | 2025-04-16 | 주식회사 엘지에너지솔루션 | 이차전지, 이차전지 제조장치 및 제조방법 |
| JP7471737B2 (ja) * | 2020-09-07 | 2024-04-22 | エルジー エナジー ソリューション リミテッド | 二次電池、二次電池製造装置及び製造方法 |
-
2023
- 2023-12-22 EP EP23907889.2A patent/EP4621947A4/en active Pending
- 2023-12-22 WO PCT/KR2023/021481 patent/WO2024136606A1/ko not_active Ceased
- 2023-12-22 CN CN202380086539.0A patent/CN120380646A/zh active Pending
- 2023-12-22 JP JP2025536852A patent/JP2026500395A/ja active Pending
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| KR100676989B1 (ko) * | 2000-01-26 | 2007-01-31 | 다이니폰 인사츠 가부시키가이샤 | 히트실링장치, 히트실링방법, 엠보스성형방법, 워크압압장치 및 워크 |
| JP2013157286A (ja) * | 2012-01-31 | 2013-08-15 | Toppan Printing Co Ltd | 蓄電デバイス |
| KR20190038094A (ko) * | 2017-09-29 | 2019-04-08 | 에스케이이노베이션 주식회사 | 이차 전지의 파우치 성형 장치 |
| KR20220048453A (ko) * | 2020-10-12 | 2022-04-19 | 주식회사 엘지에너지솔루션 | 전지 케이스 실링 장치 및 이를 이용하여 제조되는 이차 전지 |
| KR20220060805A (ko) * | 2020-11-05 | 2022-05-12 | 주식회사 엘지에너지솔루션 | 탭가이드를 포함하는 전극탭 용접장치 및 이에 의한 전극탭 용접방법 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP4621947A4 (en) | 2026-04-22 |
| JP2026500395A (ja) | 2026-01-06 |
| EP4621947A1 (en) | 2025-09-24 |
| CN120380646A (zh) | 2025-07-25 |
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