WO2024043551A1 - 파우치형 이차전지용 실링 장치 - Google Patents
파우치형 이차전지용 실링 장치 Download PDFInfo
- Publication number
- WO2024043551A1 WO2024043551A1 PCT/KR2023/010720 KR2023010720W WO2024043551A1 WO 2024043551 A1 WO2024043551 A1 WO 2024043551A1 KR 2023010720 W KR2023010720 W KR 2023010720W WO 2024043551 A1 WO2024043551 A1 WO 2024043551A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- sealing
- pouch
- unit
- transmitting material
- Prior art date
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 190
- 239000000463 material Substances 0.000 claims abstract description 102
- 238000003825 pressing Methods 0.000 claims description 34
- 239000000565 sealant Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 7
- 239000003792 electrolyte Substances 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 41
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- 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
-
- 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
-
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
-
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
- B29C65/245—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool the heat transfer being achieved contactless, e.g. by radiation
-
- 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
-
- 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
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- 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
- H01M50/121—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—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
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0033—Heating devices using lamps
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0033—Heating devices using lamps
- H05B3/0038—Heating devices using lamps for industrial applications
-
- 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
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7146—Battery-cases
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a sealing device used for case sealing when manufacturing pouch-type secondary batteries.
- This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0106088, dated August 24, 2022, and all content updated in the document of the Korean Patent Application is included as part of this specification.
- lithium secondary batteries with high energy density and discharge voltage are commercialized and used in various forms.
- Lithium secondary batteries are classified into cylindrical secondary batteries, prismatic secondary batteries, and pouch-shaped secondary batteries according to their appearance.
- pouch-type secondary batteries can obtain high-capacity, high-density secondary batteries by adjusting the thickness of the aluminum laminate sheet, and can have various shapes, so research in various fields is underway.
- a pouch-type secondary battery is generally formed by forming an aluminum laminate sheet to form an accommodating portion, storing an electrode assembly in the accommodating portion, and then sealing the surrounding portion of the accommodating portion.
- the conventional pouch-type secondary battery sealing device performs pressurization and heating as a single member.
- a conventional pouch-type secondary battery sealing device places the sealing part of a pouch-type secondary battery case made of a laminated sheet containing an external resin layer, a metal layer, and an internal sealant layer so that the internal sealant layer faces, and then heats and pressurizes it simultaneously. Seal it by placing it between the pressurized parts.
- the sealing device has a problem in that it takes a lot of time for heat to be transferred from the external resin layer to the internal sealant layer, causing damage to the external resin layer.
- the pouch-type secondary battery sealing device like the pouch-type secondary battery sealing device according to the prior art, arranges the sealing part of the pouch-type secondary battery case including an external resin layer, a metal layer, and an internal sealant layer so that the internal sealant layer faces, This is placed between the pressurized parts.
- the pressing part is made of an infrared-transmitting material, and an infrared irradiating part is present at the top.
- the infrared irradiation unit rapidly heats only the metal layer of the sealing part of the secondary battery case and melts the internal sealant layer with the heated metal layer, thereby improving the sealing force while reducing damage to the external resin layer due to conventional heat.
- the pouch-type secondary battery sealing device has a limitation in that the laser output must be high to heat the metal layer disposed between the external resin layer and the internal sealant layer. Additionally, due to uneven heating of the pressurized portion, quality imbalance may occur, such as uneven sealing or wrinkles in the laminate sheet that makes up the case. To solve this problem, when increasing the laser output, there is a problem that the pressing part is damaged when pressed in a heated state due to the low compressive strength of the pressing part.
- the purpose of the present invention is to provide a pouch-type secondary battery sealing device that can uniformly and safely seal the sealing part of the pouch-type secondary battery case and a secondary battery manufacturing method using the same.
- the present invention in one embodiment, the present invention
- a pressurizing portion located at least at one of the upper and lower portions of the sealing portion of the pouch case and made of a material through which a light source can pass through;
- It includes a light source unit that irradiates light to the pressing unit,
- the pressing unit provides a pouch-type secondary battery sealing device including a first light-transmitting material that satisfies the following equation 1:
- TC 1st represents the thermal conductivity of the first light transmitting material (unit: W/m ⁇ K)
- RI 1st represents the refractive index of the first light-transmitting material for light having a wavelength of 980 nm.
- the first light-transmitting material may have a refractive index of 1.45 to 1.9 for light having a wavelength of 980 nm and may exhibit a Mohs hardness of 8.0 or more.
- the pressing part includes a sealing unit that contacts and heat-presses the sealing part of the pouch case; and a lens unit located between the light source unit and the sealing unit to converge the light emitted from the light source unit into a ring unit, wherein the sealing unit may include a first light transmitting material.
- the lens unit includes at least one of a first light transmitting material and a second light transmitting material, and the second light transmitting material may satisfy Equation 2:
- TC 2nd represents the thermal conductivity of the second light transmitting material (unit: W/m ⁇ K)
- RI 2nd represents the refractive index of the second light-transmitting material for light having a wavelength of 980 nm.
- the second light transmitting material may have a refractive index of 1.40 to 1.60 for light having a wavelength of 980 nm.
- the lens unit may be a cylinder lens.
- the lens unit includes a first light-transmitting material and a second light-transmitting material, and the first light-transmitting material and the second light-transmitting material have a structure that is symmetrical with respect to the center line including the center of the cross section of the lens unit. You can have it.
- the light source unit may radiate light having a wavelength of 750 nm to 1,000 nm.
- a pouch-type case composed of a laminated sheet including a metal layer and an internal sealant layer and including an electrode assembly storage portion and a sealing portion surrounding the electrode assembly storage portion;
- a method of manufacturing a pouch-type secondary battery including the step of pressing and sealing the sealing portion of the pouch-type case while irradiating light from the light source portion of the sealing device to the pressurizing portion.
- the pouch-type secondary battery sealing device includes a light source unit that irradiates light and a pressurizing unit that heats and pressurizes the sealing part of the pouch case using the light irradiated from the light source unit, and includes a sealing unit of the pressurizing part in contact with the sealing part of the case. It has a configuration in which a first light-transmitting material with high thermal conductivity and high optical refractive index is applied. Accordingly, the sealing device can uniformly heat and seal the sealing part of the case and prevent damage to the sealing unit heated to high temperatures during sealing, so the quality of the secondary battery can be improved and at the same time, fairness and economic efficiency can be improved. There are benefits to improving it.
- Figure 1 is a perspective view schematically showing the sealing process of a pouch-type secondary battery using the light source unit and the pressurizing unit of the sealing device according to the present invention.
- Figure 2 is a cross-sectional view showing the cross-sectional structure formed by the first light-transmitting material and the second light-transmitting material in the lens unit including the first light-transmitting material and the second light-transmitting material.
- the present invention in one embodiment, the present invention
- a pressurizing portion located at least at one of the upper and lower portions of the sealing portion of the pouch case and made of a material through which a light source can pass through;
- It includes a light source unit that irradiates light to the pressing unit,
- the pressing unit provides a pouch-type secondary battery sealing device including a first light-transmitting material that satisfies the following equation 1:
- TC 1st represents the thermal conductivity of the first light transmitting material (unit: W/m ⁇ K)
- RI 1st represents the refractive index of the first light-transmitting material for light having a wavelength of 980 nm.
- the pouch-type secondary battery sealing device includes a light source unit that irradiates light and a pressurizing unit that heats and pressurizes the sealing part of the pouch case using the light irradiated from the light source unit, and includes a sealing unit of the pressurizing part in contact with the sealing part of the case. It is characterized by the application of a first light-transmitting material with high thermal conductivity and light refractive index. Accordingly, the sealing device can not only heat and seal the sealing part of the case uniformly, but also prevent damage to the sealing unit heated to a high temperature during sealing, so the quality of the secondary battery can be improved, and at the same time, fairness and economic efficiency can be improved. There is an advantage to this improvement.
- FIG. 1 is a perspective view schematically showing the main configuration of the sealing device according to the present invention. Hereinafter, it will be described in more detail with reference to FIG. 1.
- the sealing device 100 for a pouch-type secondary battery is located on the sealing portion 11a of the pouch case 11 and includes a pressurizing portion 120 that heats and pressurizes the sealing portion, and a light source portion that heats the pressing portion by irradiating light ( 110).
- the light source unit 110 serves to heat the pressing unit.
- the light source unit 110 may irradiate light to the pressing unit 120, and at this time, the irradiated light may emit a laser in the form of a beam.
- the light may be light formed by a laser diode, and the emitted light may be an infrared laser, specifically an infrared laser with a wavelength of 750 nm to 1,000 nm; Or it may be an infrared laser with a wavelength of 800 nm to 980 nm.
- the infrared laser emitted from the light source unit 110 may be irradiated to either the upper or lower portion of the sealing portion 11a to be sealed, or may be irradiated from both the upper and lower portions of the sealing portion 11a.
- the former case has the advantage of lower equipment costs compared to the latter case and prevents the possibility of damage to the laser diode on the opposite side.
- the latter case since two light source units 110 are used on both sides of the sealing unit 11a, there is an advantage in that the sealant layer can be effectively melted in a faster time.
- the light source unit 110 may be provided in plural numbers on the other side of the side where the pressing unit 120 presses the case sealing unit 11a, and the pressing unit 120 and the light source unit ( 110) can be placed on the same line. In this case, even if the light source unit 110 and the pressing unit 120 are spaced apart from each other, the loss of the infrared laser emitted to the pressing unit 120 can be minimized.
- the light emitted from the light source unit 110 is transmitted to the pressing part 120, and the light transmitted to the pressing part 120 is condensed to heat the sealing part 11a of the case.
- the pressing unit 120 presses the sealing unit 11a of the case to maintain the mutual adhesion of the sealant layers inside the case in a state of increased adhesion, and in this state, the light source unit 110 emits an infrared laser to apply pressure. It can be operated by heating the unit 120.
- this method irradiates infrared rays while maintaining the pressurized state, it is possible to effectively form the sealing portion 11a by performing infrared irradiation on the sealant layer inside the case with high precision and further increase the bonding force of the sealing portion 11a. You can.
- the pressing part 120 includes a sealing unit 121 that contacts and heat-presses the sealing part 11a of the pouch case; And it may include a lens unit 122 located between the light source unit 110 and the sealing unit 121 to converge the light emitted from the light source unit 110 to the sealing unit 121.
- the sealing unit 121 performs the function of pressing the sealing part 11a of the case and transferring heat from the infrared laser focused through the lens unit 122 to the sealing part 11a to heat it.
- the sealing unit 121 may have a flat plate shape provided along the sealing portion 11a of the case.
- a light source is installed inside the sealing unit 121. It may also have a structure that prevents dispersion.
- the lens unit 122 is mounted on one side of the sealing unit 121 and serves to expand the irradiation range of the infrared laser irradiated from the light source unit 110 while concentrating the light incident on the sealing unit 121. can do.
- the lens unit 122 may be formed integrally with the sealing unit 121 and may be located between the light source unit 110 and the sealing unit 121 along the path of the infrared laser.
- the lens unit 122 may refract and/or reflect the infrared laser emitted from the light source unit 110 and guide it to the sealing unit 121.
- the lens unit 122 may have a convex shape on the surface facing the sealing unit 121, and may preferably include a cylindrical cylinder lens with a side surface attached along the sealing unit 121. .
- the pressurizing unit 120 focuses the light incident from the light source unit 110 on the sealing part 11a of the case, and uses the following equation 1 to uniformly concentrate the light on the entire surface of the sealing part 11a while minimizing energy loss at this time: It may include a first light transmitting material that satisfies:
- TC 1st represents the thermal conductivity of the first light transmitting material (unit: W/m ⁇ K)
- RI 1st represents the refractive index of the first light-transmitting material for light having a wavelength of 980 nm.
- Equation 1 above represents the ratio of the thermal conductivity of the first light-transmitting material and the refractive index for light with a wavelength of 980 nm.
- the infrared laser focused on the pressurizing part 110 is transmitted to the sealing part 11a of the case in the form of heat energy.
- the energy conservation amount of the first light transmitting material is inferred by reflecting the light refractive index rather than the light transmittance for the infrared laser. can do. That is, Equation 1 above can indirectly represent the energy conservation amount of the first light-transmitting material with respect to the infrared laser.
- the pressurizing part according to the present invention may include a first light-transmitting material that satisfies Equation 1 as 15 to 35 (i.e., 15 ⁇ TC 1st / RI 1st ⁇ 35), and specifically, Equation 1 as 15 to 35 (i.e.
- the first light transmitting material may have a refractive index of 1.45 to 1.9 for light with a wavelength of 980 nm, specifically 1.45 to 1.85 for light with a wavelength of 980 nm; 1.55 to 1.85; 1.65 to 1.85; Alternatively, it may have a refractive index of 1.75 to 1.85.
- the first light-transmitting material satisfies the conditions of Equation 1, thereby minimizing energy loss of the infrared laser incident from the light source unit 110 and uniformly applying heat to the sealing portion 11a of the case.
- the sealing thickness of the sealing part can be uniformly formed.
- the first light transmitting material may exhibit a Mohs hardness within a specific range. Specifically, the first light transmitting material may exhibit a Mohs hardness of 8.0 or more, specifically 8.5 or more; Alternatively, it may have a Mohs hardness of 9.0 or higher.
- the first light-transmitting material according to the present invention satisfies the above-mentioned Mohs hardness and thus can prevent damage under heating and pressurizing conditions, so that damage to the sealing portion 11a due to damage to the pressurizing portion 120 during sealing of the case sealing portion 11a is prevented. can be prevented.
- the pressing unit 120 may include a first light-transmitting material, and in some cases, the first light-transmitting material may be used as a sealing unit 121 of the pressing unit 120 that requires high thermal energy transfer efficiency and hardness. included in, and the lens unit 122 attached to the sealing unit 121 may include one or more types of a first light-transmitting material and a second light-transmitting material.
- the lens unit 122 may be made of a first light-transmitting material, and in some cases, a relatively low thermal conductivity is required compared to the sealing unit 121, so it may be made of a second light-transmitting material alone or the same. Can be used together.
- the lens unit 122 performs the function of concentrating light incident through the entire surface of the lens unit 122 onto the sealing unit 121, and thus has a relatively high light transmittance compared to the sealing unit 121. is required, whereas low thermal conductivity may be required. Accordingly, the lens unit 122 may include a second light-transmitting material having a relatively low thermal conductivity and light refractive index compared to the first light-transmitting material, and the second light-transmitting material may satisfy Equation 2 below. :
- TC 2nd represents the thermal conductivity of the second light transmitting material (unit: W/m ⁇ K)
- RI 2nd represents the refractive index of the second light-transmitting material for light having a wavelength of 980 nm.
- Equation 2 above represents the ratio of the thermal conductivity of the second light-transmitting material and the refractive index for light with a wavelength of 980 nm.
- the infrared laser converged from the pressing part 110 is transmitted to the sealing part 11a of the case in the form of heat energy.
- the energy conservation amount of the second light-transmitting material is determined by reflecting the optical refractive index rather than the optical transmittance of the transmitted infrared laser. can be inferred. That is, Equation 2 above can indirectly represent the energy conservation amount of the second light-transmitting material with respect to the infrared laser.
- the pressurizing part according to the present invention may include a second light-transmitting material that satisfies Equation 2 as 0.5 to 2 (i.e., 0.5 ⁇ TC 2nd /RI 2nd ⁇ 2), and specifically, Equation 2 as 0.5 to 1.9. (i.e. 0.5 ⁇ TC 2nd /RI 2nd ⁇ 1.9); 0.5 to 1.75 (i.e., 0.5 ⁇ TC 2nd /RI 2nd ⁇ 1.75 ); 0.5 to 1.5 (i.e., 0.5 ⁇ TC 2nd /RI 2nd ⁇ 1.5 ); Or 0.5 to 1.35 (i.e., 0.5 ⁇ TC 2nd /RI 2nd ⁇ 1.35); may include a second light transmitting material satisfying the following.
- the second light transmitting material may have a refractive index of 1.40 to 1.60 for light with a wavelength of 980 nm, specifically 1.45 to 1.60 for light with a wavelength of 980 nm; 1.45 to 1.55; Alternatively, it may have a refractive index of 1.50 to 1.55.
- the second light-transmitting material satisfies the condition of Equation 2, so that it can focus the infrared laser incident from the light source unit 110 to the sealing unit 121 while minimizing energy loss.
- the lens unit 122 when the lens unit 122 includes a first light-transmitting material and a second light-transmitting material, it may have a constant cross-sectional structure.
- the lens unit 122 may include a first light transmitting material (1st) and a second light transmitting material (2nd) so as to be symmetrical with respect to a center line (C) including the center of the cross section.
- the center line C is parallel to the pressing direction of the sealing unit 121 and may include the center of the sealing unit 121.
- the lens unit 122 may be composed of only the second light transmitting material (2nd) as shown in (a) of Figure 2, and the center line (C) as shown in (b) to (d) of Figure 2.
- the first light transmitting material (1st) and the second light transmitting material (2nd) may be arranged to be symmetrical with respect to .
- the present invention configures the cross-sectional structures of the first light-transmitting material (1st) and the second light-transmitting material (2nd) constituting the lens unit 122 to be symmetrical with respect to the center line (C) of the lens unit 122. It is possible to maximize the thermal energy of the infrared laser focused on the sealing unit 121, and compared to the case where the lens unit 122 is composed of only the first light transmitting material (1st) with high hardness, the Processability and economic efficiency can be further improved.
- the amount of energy concentrated in the sealing unit 121 can be adjusted, so the type of case used when manufacturing a secondary battery It has the advantage of being selectively applied depending on size.
- the first light transmitting material and the second light transmitting material can be applied without particular restrictions as long as they satisfy the conditions of Equation 1 and Equation 2 described above, respectively.
- the first and second light transmitting materials may be made of germanium, silicon, zinc sulfide, magnesium fluoride, sapphire, glass, quartz, etc.
- the first light transmitting material may include sapphire (TC/RI: 22.2 ⁇ 25.7, refractive index: 1.75 ⁇ 1.8, Mohs hardness: 9), and the second light transmitting material may include quartz (TC/RI: 0.65 ⁇ It may include 1.33, refractive index: 1.5 ⁇ 1.55, Mohs hardness: 6).
- the pouch-type secondary battery sealing device can not only heat and seal the sealing part of the case uniformly, but also prevent damage to the sealing unit heated to a high temperature during sealing, thereby preventing the secondary battery from being damaged. Quality can be improved, and at the same time, there is an advantage in improving fairness and economic efficiency.
- a method of manufacturing a secondary battery using the pouch-type secondary battery sealing device described above is provided.
- the manufacturing method of a secondary battery according to the present invention has the advantage of improving the quality of the manufactured secondary battery by enabling uniform and robust sealing of the sealing portion by using the sealing device of the present invention described above during sealing.
- the manufacturing method includes storing the electrode assembly and the electrolyte in a pouch-type case composed of a laminated sheet including a metal layer and an internal sealant layer and including an electrode assembly storage portion and a sealing portion surrounding the electrode assembly storage portion; Placing the sealing device of the present invention described above at one or more of the upper and lower portions of the pouch-type case sealing portion; and sealing the sealing portion of the pouch-type case by pressing it while irradiating light from the light source portion of the sealing device to the pressurizing portion.
- the step of storing the electrode assembly and the electrolyte solution in the pouch-type case is the step of storing the electrode assembly and the electrolyte solution in the pouch-type case, and can be performed in a manner commonly applied in the art.
- the electrode assembly includes a jelly roll-type electrode assembly in which one or more cathodes, separators, and anodes are sequentially stacked and wound;
- a stack-and-folding type electrode assembly in which a unit cell in which a cathode, a separator, and an anode are sequentially stacked is placed on a long film-shaped separator and then wound in a single direction; It may be one of the stack-and-fold type electrode assemblies in which a unit cell in which a cathode, a separator, and an anode are sequentially stacked is placed on a long film-shaped separator and then wound in a zigzag direction.
- the pouch-type case may be composed of a metal layer including an aluminum layer and a laminated sheet including an internal sealant layer.
- the metal layer serves to prevent air, moisture, etc. from entering the interior of the battery.
- the type of material used in the metal layer is not particularly limited as long as it has excellent formability and ductility and can be heated by infrared rays.
- it may be made of aluminum or aluminum alloy material.
- the internal sealant layer serves to provide sealing properties by being thermally fused to each other by heat and pressure applied while the electrode assembly is embedded, and is mainly made of non-stretched polypropylene film (CPP).
- An adhesive layer may be added between the external resin layer and the metal layer and/or the metal layer and the internal sealant layer, and serves to compensate for the low adhesion between the layers on both sides of the adhesive layer.
- the step of disposing the sealing device of the present invention on the pouch-type case sealing part includes placing the sealing device of the present invention on the upper and/or lower part of the sealing portion of the pouch-type case after the electrode assembly and electrolyte solution are stored in the pouch-type case. It is carried out by doing.
- the above step can be performed by placing sealing devices on the top and bottom of the pouch-type case seal, respectively.
- the step of sealing the sealing portion of the pouch-type case by pressing is a step of sealing the sealing portion, and irradiation of light from the light source portion of the sealing device disposed on the sealing portion to the pressurizing portion and pressurizing the sealing portion of the pouch-type case may be performed simultaneously. In some cases, light irradiation to the pressurized portion may be performed after pressing the pouch-type case sealing portion.
- the light source unit may emit an infrared laser to the pressurizing unit, and the infrared laser at this time may have a wavelength of 750 nm to 1,000 nm, or may have a wavelength of 800 nm to 980 nm. If the wavelength of the infrared laser is too long, it may not be sufficient or may take a lot of time to induce heating of the blocking metal layer or melting of the sealant layer. Conversely, if the wavelength is too short, the high energy may cause rupture or rupture of the battery case. This is not advisable as it may cause fire.
- the temperature at which the sillint layer is melted by the infrared laser irradiation may be 180 to 300°C. If the temperature is outside the above range, it is not preferable because it may not be easy to form a substantially uniform seal due to insufficient or excessive melting.
- the pressure with which the pressing part of the sealing device presses the case sealing part is appropriately in the range of 0.1 to 5 MPa.
- the pressure applied to the sealing part of the case can be adjusted to be constantly applied to the front surface of the sealing part by a pressure gauge (not shown) provided in the sealing device.
- the electrode assembly and electrolyte were inserted into the pouch-type case, and the unsealed pouch cell into which the electrode assembly and electrolyte were inserted was fixed to the sealing device.
- the sealing device having the structure shown in FIG. 1 was used.
- an infrared laser with a wavelength of 980 nm is irradiated to the lens unit of the pressurizing unit using the infrared diode of the light source unit (output: 80 to 85 W/cm2), and the sealing part of the pouch case is tightened to 2MPa using the sealing unit of the pressurizing unit. Pressure was applied to seal the seal.
- the sealing unit of the pressing part is made of a first light-transmitting material
- the lens unit of the pressing part is made of one or more types of the first light-transmitting material and the second light-transmitting material.
- the physical properties of each of the first and second light transmitting materials and the cross-sectional structure of the lens unit were adjusted as shown in Table 1 below.
- the sealing quality of the sealing portion was evaluated for the pouch-type secondary batteries sealed in Examples and Comparative Examples.
- the thickness of the case seal was measured at 10 random points to check whether the case seal was uniformly and robustly sealed.
- the average value was calculated from the measured values, and the error rate at the point with the largest error was calculated based on the calculated average value. The results are shown in Table 2 below.
- the sealing device for a pouch-type secondary battery according to the present invention can uniformly and safely seal the sealing portion of the case.
- the sealing unit of the pressurizing unit using a sealing device with a light-transmitting material that satisfies the conditions of Equation 1 was uniformly sealed, and the maximum error rate based on the average thickness of the sealing unit was less than 5%.
- the sealing portion was unevenly sealed, and the maximum error rate based on the average thickness of the sealing portion was found to be more than 10%.
- the sealing device according to the present invention and the manufacturing method of a secondary battery using the same can not only uniformly seal the sealing part of the case, but also prevent damage to the sealing unit heated to a high temperature during sealing, so that the secondary battery It can be seen that quality can be improved and at the same time fairness and economic efficiency can be improved.
- Pouch-type secondary battery 11 Pouch-type case
- Sealing device 110 Light source unit
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
Description
제1 광투과재 | 제2 광투과재 | 렌즈 유닛 단면 구조 |
|||
TC1st/RI1st | 굴절률 | 모스 경도 | TC2nd/RI2nd | ||
실시예 1 | 22.2~25.7 | 1.75~1.8 | 9.0 | 0.65~1.33 | 도 2의 (a) |
실시예 2 | 22.2~25.7 | 1.75~1.8 | 9.0 | 0.65~1.33 | 도 2의 (c) |
비교예 1 | 0.65~1.33 | 1.50~1.55 | 6.0 | 0.65~1.33 | 도 2의 (a) |
평균값 기준 최대 오차율 | |
실시예 1 | 약 4% |
실시예 2 | 약 2% |
비교예 1 | 약 10% |
Claims (10)
- 파우치 케이스의 밀봉부 상부 및 하부 중 적어도 한 지점에 위치하며 광원이 투과할 수 있는 소재로 이루어진 가압부; 및상기 가압부에 광을 조사하는 광원부를 포함하고,상기 가압부는 하기 식 1을 만족하는 제1 광투과재를 포함하는 파우치형 이차전지 실링 장치:[식 1]15≤TC1st/RI1st≤35식 1에서,TC1st는 제1광투과재의 열 전도율(단위: W/m·K)을 나타내고,RI1st은 제1 광투과재의 980nm 파장을 갖는 광에 대한 굴절률을 나타낸다.
- 제1항에 있어서,제1 광투과재는 980nm 파장을 갖는 광에 대하여 1.45 내지 1.9의 굴절률을 갖는 파우치형 이차전지 실링 장치.
- 제1항에 있어서,제1 광투과재는 8.0 이상의 모스 경도를 나타내는 파우치형 이차전지 실링 장치.
- 제1항에 있어서,가압부는 파우치 케이스의 밀봉부와 접촉하여 가열 및 가압하는 실링 유닛; 및 광원부와 실링 유닛 사이에 위치하여 광원부에서 조사된 광을 실링 유닛으로 집광하는 렌즈 유닛을 포함하고,상기 실링 유닛은 제1 광투과재를 포함하는 파우치형 이차전지 실링 장치.
- 제4항에 있어서,렌즈 유닛은 제1 광투과재 및 제2 광투과재 중 1종 이상을 포함하고,상기 제2 광투과재는 식 2를 만족하는 파우치형 이차전지 실링 장치:[식 2]0.5≤TC2nd/RI2nd≤2식 2에서,TC2nd는 제2 광투과재의 열 전도율(단위: W/m·K)을 나타내고,RI2nd은 제2 광투과재의 980nm 파장을 갖는 광에 대한 굴절률을 나타낸다.
- 제5항에 있어서,제2 광투과재는 980nm 파장을 갖는 광에 대하여 1.40 내지 1.60의 굴절률을 갖는 파우치형 이차전지 실링 장치.
- 제4항에 있어서,렌즈 유닛은 실린더 렌즈인 것을 특징으로 하는 파우치형 이차전지 실링 장치.
- 제4항에 있어서,렌즈 유닛은 제1 광투과재 및 제2 광투과재를 포함하고,상기 제1 광투과재 및 제2 광투과재는 렌즈 유닛의 단면 중심을 포함하는 중심선에 대하여 대칭을 이루는 구조를 갖는 파우치형 이차전지 실링 장치.
- 제1항에 있어서,광원부는 750 nm 내지 1,000 nm의 파장을 갖는 광을 조사하는 파우치형 이차전지 실링 장치.
- 금속층 및 내부 실란트층을 포함하는 라미네이트 시트로 구성되고, 전극 조립체 수납부와 이를 둘러싸는 밀봉부를 포함하는 파우치형 케이스에 전극 조립체 및 전해액을 수납하는 단계;상기 파우치형 케이스 밀봉부의 상부 및 하부 중 어느 한 지점 이상에 제1항에 따른 실링 장치를 배치하는 단계; 및상기 실링 장치의 광원부에서 가압부로 광을 조사하면서 파우치형 케이스의 밀봉부를 가압하여 밀봉하는 단계를 포함하는 파우치형 이차전지의 제조방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2024523930A JP2024536596A (ja) | 2022-08-24 | 2023-07-25 | パウチ型二次電池用シーリング装置 |
EP23857587.2A EP4403337A1 (en) | 2022-08-24 | 2023-07-25 | Sealing device for pouch-type secondary battery |
CN202380014204.8A CN118159410A (zh) | 2022-08-24 | 2023-07-25 | 用于袋式二次电池的密封装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2022-0106088 | 2022-08-24 | ||
KR1020220106088A KR20240028053A (ko) | 2022-08-24 | 2022-08-24 | 파우치형 이차전지용 실링 장치 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2024043551A1 true WO2024043551A1 (ko) | 2024-02-29 |
Family
ID=90013661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2023/010720 WO2024043551A1 (ko) | 2022-08-24 | 2023-07-25 | 파우치형 이차전지용 실링 장치 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4403337A1 (ko) |
JP (1) | JP2024536596A (ko) |
KR (1) | KR20240028053A (ko) |
CN (1) | CN118159410A (ko) |
WO (1) | WO2024043551A1 (ko) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120056316A (ko) * | 2010-11-24 | 2012-06-04 | 주식회사 엘지화학 | 향상된 생산성의 이차전지 제조방법 |
KR20130008473A (ko) * | 2011-07-12 | 2013-01-22 | 닛토덴코 가부시키가이샤 | 수지 필름 접합체의 제조 방법 |
KR102252162B1 (ko) * | 2019-11-27 | 2021-05-14 | (주)한빛레이저 | 레이저와 유리 도광판을 이용한 파우치 융착방법과 장치 |
KR20210156516A (ko) | 2020-06-18 | 2021-12-27 | 주식회사 엘지에너지솔루션 | 파우치형 이차전지 실링장치 및 파우치형 이차전지의 제조방법 |
KR20220068815A (ko) * | 2020-11-19 | 2022-05-26 | 주식회사 엘지에너지솔루션 | 파우치형 이차전지의 제조방법 및 제조장치 |
KR20220106088A (ko) | 2016-09-06 | 2022-07-28 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 전자 기기, 화상 표시 방법, 프로그램, 및 표시 시스템 |
-
2022
- 2022-08-24 KR KR1020220106088A patent/KR20240028053A/ko unknown
-
2023
- 2023-07-25 WO PCT/KR2023/010720 patent/WO2024043551A1/ko active Application Filing
- 2023-07-25 CN CN202380014204.8A patent/CN118159410A/zh active Pending
- 2023-07-25 JP JP2024523930A patent/JP2024536596A/ja active Pending
- 2023-07-25 EP EP23857587.2A patent/EP4403337A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120056316A (ko) * | 2010-11-24 | 2012-06-04 | 주식회사 엘지화학 | 향상된 생산성의 이차전지 제조방법 |
KR20130008473A (ko) * | 2011-07-12 | 2013-01-22 | 닛토덴코 가부시키가이샤 | 수지 필름 접합체의 제조 방법 |
KR20220106088A (ko) | 2016-09-06 | 2022-07-28 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 전자 기기, 화상 표시 방법, 프로그램, 및 표시 시스템 |
KR102252162B1 (ko) * | 2019-11-27 | 2021-05-14 | (주)한빛레이저 | 레이저와 유리 도광판을 이용한 파우치 융착방법과 장치 |
KR20210156516A (ko) | 2020-06-18 | 2021-12-27 | 주식회사 엘지에너지솔루션 | 파우치형 이차전지 실링장치 및 파우치형 이차전지의 제조방법 |
KR20220068815A (ko) * | 2020-11-19 | 2022-05-26 | 주식회사 엘지에너지솔루션 | 파우치형 이차전지의 제조방법 및 제조장치 |
Also Published As
Publication number | Publication date |
---|---|
CN118159410A (zh) | 2024-06-07 |
EP4403337A1 (en) | 2024-07-24 |
KR20240028053A (ko) | 2024-03-05 |
JP2024536596A (ja) | 2024-10-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2021080207A1 (ko) | 이차전지 탭 레이저 용접을 위한 밀착 지그 및 용접 방법 | |
WO2021251736A1 (ko) | 파우치 필름 적층체, 파우치 형 전지 케이스 및 파우치 형 이차 전지 | |
WO2019004719A1 (ko) | 전극 탭의 용접 방법 및 이에 따라 제조된 전극을 포함하는 케이블형 이차전지 | |
WO2022191612A1 (ko) | 전지셀 및 이를 제조하는 전지셀 제조 장치 | |
WO2022108194A1 (ko) | 파우치형 이차전지의 제조방법 및 제조장치 | |
WO2022169237A1 (ko) | 가압력 조절이 가능한 가압롤을 포함하는 라미네이션 장치 및 이를 이용하여 제조된 전극조립체 | |
WO2022220651A1 (ko) | 이차전지 | |
WO2024043551A1 (ko) | 파우치형 이차전지용 실링 장치 | |
WO2022035124A1 (ko) | 이차전지용 실링장치 | |
WO2022108080A1 (ko) | 이차 전지 및 이의 제조 방법 | |
WO2022164182A2 (ko) | 전지셀 및 전지셀 제조 장치 | |
WO2023204549A1 (ko) | 전지셀 및 그 제조 방법 | |
WO2021256658A1 (ko) | 파우치형 이차전지 실링장치 및 파우치형 이차전지의 제조방법 | |
WO2022220626A1 (ko) | 이차전지 | |
WO2022065720A1 (ko) | 사이드 폴딩 장치 및 방법 | |
WO2021141311A1 (ko) | 이차전지 제조장치 및 이차전지 제조방법 | |
WO2023121252A1 (ko) | 전지 케이스 실링장치 및 이를 이용하는 전지 케이스 실링방법 | |
WO2024136380A1 (ko) | 파우치형 이차 전지 | |
WO2024136213A1 (ko) | 파우치형 전지 케이스 및 파우치형 이차 전지 | |
WO2023075319A1 (ko) | 이차 전지용 전극의 제조방법, 이차 전지용 전극, 및 상기 방법에 사용되는 전극 제조 시스템 | |
WO2023136594A1 (ko) | 파우치형 이차전지 및 이의 제조방법 | |
WO2023038294A1 (ko) | 파우치형 이차전지의 실링방법, 파우치형 이차전지의 제조방법, 파우치형 이차전지의 실링장치 및 이를 이용하여 제조되는 파우치형 이차전지 | |
WO2024019485A1 (ko) | 파우치형 전지셀 및 이를 제조하기 위한 파우치형 전지케이스의 실링 장치 | |
WO2023101278A1 (ko) | 파우치형 전지 및 파우치형 전지의 실링장치 | |
WO2023043177A1 (ko) | 전극 조립체, 이의 제조 장치, 및 이의 제조 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23857587 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023857587 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2024523930 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2023857587 Country of ref document: EP Effective date: 20240418 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202380014204.8 Country of ref document: CN |