Classifications

• • 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
  • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
  • B29C65/7841—Holding or clamping means for handling purposes
  • B29C65/7847—Holding or clamping means for handling purposes using vacuum to hold at least one of the parts to be joined
• • 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
  • B29C65/44—Joining a heated non plastics element to a plastics element
• • 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
  • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
  • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
  • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
  • B29C65/7864—In-line machines, i.e. feeding, joining and discharging are in one production line using a feeding table which moves to and fro
• • 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
• • 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
  • B29C66/343—Making tension-free or wrinkle-free joints
• • 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
  • B29C66/348—Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
• • 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
  • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
  • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
• • 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
• • 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
  • B29C66/74—Joining plastics material to non-plastics material
  • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
• • 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
  • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
  • B29C66/8182—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects
• • 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
  • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
  • B29C66/8362—Rollers, cylinders or drums moving relative to and tangentially to the parts to be joined
• • 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
  • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
  • B29C69/005—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore cutting-off or cutting-out a part of a strip-like or sheet-like material, transferring that part and fixing it to an article
• • 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
  • H01M4/00—Electrodes
  • H01M4/02—Electrodes composed of, or comprising, active material
  • H01M4/64—Carriers or collectors
  • H01M4/66—Selection of materials
  • H01M4/665—Composites
  • H01M4/667—Composites in the form of layers, e.g. coatings
• • 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
  • B29C2793/00—Shaping techniques involving a cutting or machining operation
  • B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
• • 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
  • B29C66/731—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 intensive physical properties of the material of the parts to be joined
  • B29C66/7311—Thermal properties
  • B29C66/73117—Tg, i.e. glass transition temperature
• • 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
  • B29C66/735—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 extensive physical properties of the parts to be joined
  • B29C66/7352—Thickness, e.g. very thin
• • 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
  • B29C66/735—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 extensive physical properties of the parts to be joined
  • B29C66/7352—Thickness, e.g. very thin
  • B29C66/73521—Thickness, e.g. very thin of different thickness, i.e. the thickness of one of the parts to be joined being different from the thickness of the other part
• • 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
  • B29C66/74—Joining plastics material to non-plastics material
  • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
  • B29C66/7422—Aluminium or alloys of aluminium
• • 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
  • B29C66/74—Joining plastics material to non-plastics material
  • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
  • B29C66/7428—Transition metals or their alloys
  • B29C66/74281—Copper or alloys of copper
• • 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
  • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
  • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
• • 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
  • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
  • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
• • 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
• • 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

• This disclosure relates to a method for manufacturing a current collector foil with a resin film.
• JP2021-530829A relates to a technology for continuous and/or semi-continuous production of semi-solid electrodes and batteries incorporating semi-solid electrodes, and describes a method comprising continuously distributing a semi-solid electrode slurry onto a current collector, separating the semi-solid electrode slurry into separate portions, and cutting the current collector to form a finished electrode.
• JP2018-524759A describes a method for manufacturing an electrochemical cell, the method including the steps of: disposing a first current collector on a first portion of a pouch material; disposing a first electrode material on the first current collector; disposing a second current collector on a second portion of the pouch material; disposing a second electrode material on the second current collector; disposing a separator on at least one of the first electrode material and the second electrode material; folding the pouch material along a fold line between the first and second portions of the pouch; and sealing the pouch material to form a pouch in which the electrochemical cell is housed.
• Japanese Patent Application Laid-Open No. 08-224785 describes a method for bonding two or more film sheets, which comprises sucking and fixing one of the film sheets onto a bonding table having many suction holes, applying adhesive to at least two opposing sides of the film sheet, laminating the other film sheet onto the adhesive-coated film sheet, and then fixing both film sheets by electrostatic charging, and pressing the fixed film sheet from above with a roll.
• a current collector foil with a resin film may be used, in which multiple sheets of metal foil cut into a specified shape are attached at specified intervals to a continuous resin film.
• One embodiment of the manufacturing method of such a current collector foil with a resin film includes a manufacturing method in which a metal foil is cut into a specified shape to prepare a laminate in which multiple sheets of metal foil are laminated, the metal foil is peeled off from the laminate, the metal foil is transferred onto a continuous resin film, and the resin film and the metal foil are heat-sealed.
• the metal foils stick together due to burrs and static electricity on the edges of the metal foil, making it difficult to peel off the metal foils one by one; when the metal foil is placed on the resin film and then heat-sealed to the resin film, wrinkles are generated; and it is difficult to avoid heat-sealing a certain part of the metal foil to the resin film.
• the problem that one embodiment of the present disclosure aims to solve is to provide a method for manufacturing a current collector foil with a resin film that can precisely bond a metal foil to a predetermined position on a resin film and that can obtain a current collector foil with a resin film that is less susceptible to wrinkles.
• the present disclosure includes the following aspects. ⁇ 1> A process A of cutting a metal foil for a current collector foil into sheets; A process B in which a movable stage adsorbs the cut metal foil sheet by sheet and moves the adsorbed metal foil onto a resin film by the movable stage; and step C of contacting the metal foil with the resin film to heat-seal the metal foil with the resin film,
• the moving stage includes a plate-shaped body having a heating and adsorption area, and the area of the heating and adsorption area is smaller than the area of the cut metal foil. Manufacturing method of current collector foil with resin film.
• ⁇ 2> The method for producing a current collector foil with a resin film according to ⁇ 1>, wherein in step C, the metal foil moved by the movable stage is brought into contact with the resin film wrapped around a roller, and the roller and the movable stage are moved relative to each other to thermally fuse the metal foil and the resin film.
• step C The method for producing a current collector foil with a resin film according to ⁇ 1> or ⁇ 2>, wherein in step C, a region that is not heat-fused to the resin film is formed in a part of the metal foil, and after step C, a step D is included in which the region of the metal foil that is not heat-fused to the resin film is pressed against the resin film to flatten it.
• ⁇ 4> The method for producing a current collector foil with a resin film according to any one of ⁇ 1> to ⁇ 3>, wherein the resin film has a thickness of 4 ⁇ m to 50 ⁇ m.
• ⁇ 5> The method for producing a current collector foil with a resin film according to ⁇ 4>, wherein the resin film includes a heat-sealing layer and a plastic substrate, and a thickness of the heat-sealing layer and a thickness of the plastic substrate satisfy the relationship shown in the following formula 1.
• Formula 1 0.1 ⁇ [thickness of heat sealable layer] ⁇ [thickness of plastic substrate] ⁇ 1.00 ⁇ 6>
• a method for manufacturing a current collector foil with a resin film which allows metal foil to be bonded to a predetermined position on a resin film with high precision, and also allows the production of a current collector foil with a resin film in which the occurrence of wrinkles is suppressed.
• FIG. 1A is a schematic diagram for explaining cutting of the metal foil in step A.
• FIG. 1B is a schematic diagram for explaining cutting of the metal foil in step A.
• FIG. 1C is a schematic diagram for explaining cutting of the metal foil in step A.
• FIG. 1D is a diagram showing an example of a moving stage holding cut metal foil by suction.
• FIG. 2 is a top view for explaining an example of a metal foil cut into the shape of a current collector foil.
• FIG. 3A is a schematic diagram for explaining the attraction and movement of the metal foil to the moving stage in step B.
• FIG. 3B is a schematic cross-sectional view showing a moving stage according to one embodiment.
• FIG. 3C is a schematic cross-sectional view showing a moving stage according to another embodiment.
• FIG. 4 is a process diagram illustrating an example of a mode in which a metal foil and a resin film are heat-sealed.
• FIG. 5 is a schematic diagram for explaining one embodiment of a method for producing a current collector foil with a resin film.
• FIG. 6 is a diagram showing an example of a current collector foil with a resin film.
• FIG. 7 is a diagram for explaining the distances a, b, and c.
• a numerical range expressed using " ⁇ " means a range that includes the numerical values written before and after " ⁇ " as the upper and lower limits.
• the upper or lower limit value described in a certain numerical range may be replaced with the upper or lower limit value of another numerical range described in stages.
• the upper or lower limit value described in a certain numerical range may be replaced with a value shown in the examples.
• process includes not only independent processes, but also processes that cannot be clearly distinguished from other processes as long as the intended purpose of the process is achieved.
• the manufacturing method of the current collector foil with resin film according to the present disclosure includes a step A of cutting a metal foil for use in the current collector foil into sheets, a step B of a movable stage adsorbing the cut metal foil sheet by sheet and moving the adsorbed metal foil onto a resin film, and a step C of bringing the metal foil into contact with the resin film to thermally fuse the metal foil and the resin film, wherein the movable stage includes a plate-like body having a heating and adsorption region, and the area of the heating and adsorption region is smaller than the area of the cut metal foil.
• the manufacturing method disclosed herein allows the metal foil to be bonded precisely to a predetermined position on the resin film, and produces a collector foil with a resin film that is free of wrinkles.
• step A the metal foil for the current collector foil is cut into sheets
• step B the moving stage adsorbs the cut metal foil for each sheet, and the moving stage moves the adsorbed metal foil onto the resin film.
• the cut metal foil can be moved onto the resin film without being stacked, so that the metal foils do not stick to each other.
• the moving stage used in step B includes a plate-shaped body having a heating and adsorption area, and when the moving stage moves the metal foil onto the resin film, the heating and adsorption area heats the metal foil, so that in step C, the resin film and the metal foil can be quickly heat-sealed. Therefore, it is presumed that the resin film is not heated excessively, and the occurrence of wrinkles is effectively suppressed. Furthermore, by making the area of the heating and adsorption area in the moving stage used in step B smaller than the area of the cut metal foil, a region that is not heat-sealed between the metal foil and the resin film can be formed at a predetermined position of the metal foil.
• JP-T-2021-530829 describes that in some embodiments, the current collector can be disposed on an electrically insulating material (e.g., a laminate pouch material) so as to be in direct contact with the insulating material.
• JP-T-2018-524759 describes disposing multiple current collectors on a pouch film (e.g., a PE/PP film) in an anode assembly or a cathode assembly.
• a pouch film e.g., a PE/PP film
• the lamination table with suction holes used in the method described in JP-A-08-224785 is a different member from the moving stage of the present disclosure.
• the method described in JP-A-08-224785 is a method for laminating film lens sheets such as Fresnel lenses and lenticular lenses, and the method described in this document does not anticipate thermally fusing metal foil and resin film.
• the resin film-attached current collector foil obtained by the manufacturing method disclosed herein also has the secondary effect of excellent adhesion between the metal foil and the resin film.
• Excellent adhesion between the metal foil and the resin film tends to increase the reliability of the battery to which the resin film-attached current collector foil is applied. That is, for example, when manufacturing a quasi-solid-state battery, a composition containing a positive electrode active material or a negative electrode active material and a conductive assistant is applied to the surface of the current collector foil to form a positive electrode or a negative electrode, and therefore excellent adhesion between the metal foil, which is the current collector foil, and the resin film is preferable because it strengthens the base on which the positive electrode or negative electrode is formed.
• the manufacturing method of the present disclosure includes a step A of cutting a metal foil for a current collector foil into sheets.
• the cutting may be performed by using a cutting means.
• the metal foil to be cut is preferably a strip-shaped metal foil.
• the strip-shaped metal foil may be used in the form of a roll.
• FIG. 1A, 1B, and 1C are schematic diagrams illustrating one embodiment of step A.
• step A first, a desired amount of band-shaped metal foil 10 is pulled out in the direction of arrow X from a roll of metal foil 10.
• the metal foil 10 is pulled out onto the cutting stage 14 so as to cover the cutting stage 14, and is fixed onto the cutting stage 14 by the gripping portion 12.
• a cutting member 20 disposed at a position facing the surface of the cutting stage 14 is moved in the direction of arrow A1 to cut the metal foil 10 into the desired shape of the current collector foil. This results in a cut sheet of metal foil (current collector foil) having the desired shape.
• the cutting member 20 is equipped with a cutting means (not shown).
• a protective member such as a cutting mat may be placed on the surface of the cutting stage 14 with which the cutting means of the cutting member 20 comes into contact.
• the cutting member 20 is moved in the direction of arrow A2 to separate the cutting member 20 from the cutting stage 14.
• the cut metal foil 11 is adsorbed by a moving stage (not shown) that has moved onto the cutting stage 14, and is removed from the cutting stage 14.
• the metal foil is preferably cut on a cutting stage.
• the cutting stage may be a plate-like member equipped with a removable moving stage.
• the cutting stage may be, for example, a plate-like member having a flat surface as shown in FIG. 1A, or a flat plate member having a through-hole corresponding to the cut shape of the current collector foil.
• FIG. 1A if the cutting stage is a plate-like member with a flat surface, the cut metal foil can be adsorbed by moving the moving stage, which is arranged vertically above the cutting stage, vertically downward.
• FIG. 1D is a schematic diagram showing an example of a moving stage adsorbing metal foil according to this embodiment, in which metal foil 11 is adsorbed to the vertically lower side of moving stage 16.
• the moving stage can be placed under the through hole and the cut metal foil that passes through the through hole can be adsorbed. Details regarding the adsorption of the metal foil will be described in detail in the explanation of process B.
• the cutting means provided in the cutting member may be anything capable of cutting the metal foil to be cut into a specified shape, such as a Thomson blade, engraving blade, or laser cutter.
• the pressing force required to cut the metal foil may be any pressing force that can cut the metal foil to be cut.
• the pressing force can be, for example, 50 kgf (0.5 kN) to 10,000 kgf (100 kN), and is preferably 100 kgf (1 kN) to 1,000 kgf (10 kN).
• Pressing mechanisms that can be used to cut metal foil include servo presses, air cylinders, and servo presses.
• the cut shape of the metal foil may be the desired shape of the current collector foil.
• the cut shape of the metal foil is preferably a rectangle that corresponds to the current collector foil having a tab portion protruding from the main body.
• Figure 2 is a top view showing an example of the metal foil that constitutes the current collector foil portion in the current collector foil with resin film obtained by the manufacturing method of the present disclosure.
• metal foil 11 is an example of a cut piece cut from strip-shaped metal foil 10, which is the object to be cut, and reference numerals 11A and 11B indicate portions corresponding to the main body and tab portions of the current collector foil, respectively.
• the dimensions of metal foil 11 can be set according to the dimensions of the desired current collector foil.
• the dimensions of the metal foil 11 can be, for example, length L1: 100 mm to 2000 mm x width L2: 100 mm to 2000 mm, and length L3: 15 mm to 50 mm x width L4: 20 mm to 50 mm.
• the position of the reference symbol 11B corresponding to the tab portion is not limited to the form shown in the figure, so long as it is a position that can function as a tab portion.
• the thickness of the metal foil (i.e., the current collector foil obtained by cutting) is preferably 3 ⁇ m or more, more preferably 5 ⁇ m or more, and even more preferably 10 ⁇ m or more. From the viewpoint of flexibility and light weight, the thickness of the metal foil is preferably 100 ⁇ m or less, more preferably 70 ⁇ m or less, and even more preferably 50 ⁇ m or less.
• the metal foil may be a metal foil containing a conventionally known metal material used in current collector foils.
• metal materials include aluminum, aluminum alloys, copper, copper alloys, stainless steel, nickel, and titanium.
• the type of metal material may be selected depending on whether the current collector foil is a positive electrode current collector foil or a negative electrode current collector foil.
• copper foil or aluminum foil can be suitably used as the metal foil.
• Current collector foils using copper foil or aluminum foil may have poor adhesion to resin materials, but the current collector foil with resin film obtained by the manufacturing method disclosed herein has excellent adhesion between the resin film and the current collector foil, even when copper foil or aluminum foil is used.
• the manufacturing method of the present disclosure includes a step B in which a movable stage adsorbs the cut metal foil sheet by sheet and moves the adsorbed metal foil onto a resin film.
• the movable stage moves the adsorbed metal foil onto the resin film while heating a predetermined region of the adsorbed metal foil.
• the moving stage includes a plate-like body having a heating and adsorption region.
• the heating and adsorption region is a region equipped with both an adsorption mechanism and a heating mechanism, and when the metal foil is moved onto the resin film in step B, the heating and adsorption region holds the metal foil in an adsorbed state on the surface of the moving stage and heats the metal foil.
• process B the portion of the metal foil that comes into contact with the heat adsorption area is heated to a temperature at which heat fusion with the resin film is possible.
• the area of the heat adsorption region is smaller than the area of the cut metal foil pieces. Therefore, when the metal foil is heated, the temperature of the parts of the metal foil that are not in contact with the heat adsorption region can be made lower than the parts that are in contact with the heat adsorption region. By adjusting the temperature of the parts of the metal foil that are not in contact with the heat adsorption region to a temperature at which the metal foil and the resin film are not thermally fused together, an area where the metal foil and the resin film are not thermally fused together can be formed between the metal foil and the resin film in step C.
• the suction mechanism of the heating and suction area when cutting metal foil on a moving stage, is activated from vertically below the cut metal foil to suction the metal foil onto the moving stage.
• the movable stage is moved vertically above the cutting stage on which the cut metal foil is placed so that the heating and adsorption area of the movable stage faces the metal foil, and the heating and adsorption area is aligned with the heated portion of the metal foil.
• the adsorption mechanism provided in the heating and adsorption area is activated, and the movable stage adsorbs the metal foil and then moves in a predetermined direction.
• Figure 3A is a schematic diagram for explaining one example of this embodiment.
• the moving stage 110 having the heating mechanism 111 and the suction mechanism 112 is attached to the moving mechanism 116, and the moving stage 110 is moved to a position corresponding to the cut metal foil 113 by the moving mechanism 116.
• the moving stage 110 is lowered in the A3 direction, and the suction mechanism 112 is operated to suction the metal foil 113 to the surface of the moving stage 110 on the suction mechanism 112 side.
• the moving stage 110 with the metal foil 113 suctioned is raised in the A4 direction, and the moving mechanism 116 moves the moving stage 110 in the A5 direction to transfer the metal foil 113 onto the resin film (not shown).
• step C described later after the metal foil 113 and the resin film are thermally fused together, the moving stage 110 is moved in the A6 direction to return the moving stage 110 to the cutting stage.
• the suction mechanism of the heated suction region is not particularly limited, so long as it is a mechanism capable of adsorbing the metal foil cut in step A onto the surface of the moving stage.
• the suction mechanism may be composed, for example, of a plurality of suction holes provided on the surface of the moving stage, and an intake member (e.g., an intake pipe) connected to the moving stage and a vacuum pump.
• the retention of the metal foil on the stage surface can be improved by sucking in the air inside the suction holes provided on the moving stage surface from the intake member and creating a reduced pressure state inside the holes.
• the suction mechanism may be one that releases the metal foil when suction from the suction member is stopped, or one that maintains a reduced pressure state inside the suction hole on the stage surface and maintains the metal foil for a certain period of time.
• the shape of the opening of the suction holes is not particularly limited, but is preferably circular or elliptical.
• the number of suction holes may be determined so that the metal foil can be attached to the surface of the moving stage.
• the number of suction holes per square centimeter is, for example, 1 to 10,000.
• the opening diameter of the suction hole can be, for example, 10 ⁇ m to 2000 ⁇ m.
• the opening diameter means the diameter of the opening when the shape of the opening of the suction hole is a perfect circle, and means the average value of the maximum and minimum inner diameters of the opening when the shape is not a perfect circle.
• the plate-like body having a heating and adsorption region included in the moving stage has a plurality of adsorption holes, and that the thickness of the metal foil and the average opening diameter of the adsorption holes satisfy the relationship shown in the following formula 2. Equation 2: 0.005 ⁇ [Thickness of metal foil] ⁇ [Average opening diameter of suction holes] ⁇ 0.1
• the value obtained by dividing the thickness of the metal foil by the average opening diameter of the suction holes is 0.005 or more, suction hole marks are less likely to be left on the metal foil, and the adhesion between the metal foil and the resin film when heat-sealed is improved. Furthermore, if the value obtained by dividing the thickness of the metal foil by the average opening diameter of the suction holes is 0.1 or less, the cut current collector foil can be transferred to the resin film without being misaligned.
• the "thickness of the metal foil” is a value measured in accordance with Japanese Industrial Standard JIS K7130:1999.
• the "average opening diameter of the suction holes” is a value measured by the following method. The surface of a plate having a plurality of suction holes is observed under an electron microscope, and 20 suction holes are randomly selected. The opening diameters of the selected 20 suction holes are measured, and the measured values are arithmetically averaged to calculate the "average opening diameter.”
• the heating mechanism of the heat adsorption region is not particularly limited as long as it is a mechanism capable of heating the metal foil.
• Examples of the heating mechanism include resistance heating, arc heating, induction heating, dielectric heating, infrared heating, laser heating, and heat pump heating. From the viewpoint of the light weight of the device, resistance heating and induction heating are preferred as the heating mechanism.
• the heating mechanism is preferably activated when the heating and adsorption area of the moving stage adsorbs the metal foil.
• the heating mechanism can also be activated after the moving stage adsorbs the metal foil.
• the heating temperature may be set depending on the metal foil and the resin film.
• the heating temperature may be any temperature at which the metal foil and the resin film can be thermally fused in step C, and may be, for example, 50°C to 300°C, preferably 60°C to 200°C, and more preferably 70°C to 100°C.
• the time for which the metal foil is heated may be the time it takes for the moving stage to move the cut metal foil onto the resin film, and may be, for example, 0.1 to 60 seconds, preferably 1 to 30 seconds, and more preferably 2 to 15 seconds.
• the moving stage may be moved by a moving mechanism.
• the moving mechanism is not particularly limited, and examples thereof include a single-axis robot, an air cylinder, and a conveyor.
• the material that makes up the moving stage is not particularly limited, but examples include aluminum, stainless steel, bakelite, etc.
• the thickness of the moving stage is not particularly limited, and can be, for example, 1 mm to 50 mm from the viewpoint of transportability.
• Figure 3B is a schematic cross-sectional view showing one embodiment of a movable stage and the form of adhesion between the movable stage and the metal foil.
• a heating mechanism 111 and an adhesion mechanism 112a are stacked together to form one movable stage 110A.
• a plurality of adhesion holes 114 are provided on the surface of the adhesion mechanism 112a opposite the heating mechanism 111.
• the entire surface of the adhesion mechanism 112a opposite the heating mechanism 111 is the heating and adhesion region.
• the portion of the cut metal foil 113 where heating should be suppressed i.e., the tab portion of the current collector foil
• the portion of the cut metal foil 113 where heating should be suppressed is positioned outside the surface of the suction mechanism 112a.
• Fig. 3C is a schematic cross-sectional view showing another embodiment of the movable stage and the form of adhesion between the movable stage and the metal foil.
• a heating mechanism 111 and an adhesion mechanism 112b are stacked together to form one movable stage 110B.
• a plurality of adhesion holes 114 are provided on the surface of the adhesion mechanism 112b opposite the heating mechanism 111.
• a portion of the surface of the adhesion mechanism 112b opposite the heating mechanism 111 is made of a heat insulating material d.
• Suitable insulating materials include expanded polystyrene, urethane foam, and silicone.
• the surface of the adsorption mechanism 112b opposite the heating mechanism 111 and which is not made of the insulating material d is the heating and adsorption area.
• the portion of the cut metal foil 113 where heating should be suppressed i.e., the tab portion of the current collecting foil
• the portion of the cut metal foil 113 where heating should be suppressed is positioned in an area on the surface of the suction mechanism 112b that is made of insulating material d.
• Step C The manufacturing method of the present disclosure includes a step C of contacting a metal foil with a resin film to thermally seal the metal foil and the resin film.
• process B the part of the metal foil that comes into contact with the heated adsorption area is heated to a temperature at which it can be thermally fused to the resin film. Therefore, when the metal foil and the resin film are brought into contact in process C, the metal foil is quickly thermally fused to the resin film, which prevents the resin film from deforming due to overheating, and thus prevents wrinkles from occurring.
• the resin film is a film that includes a plastic substrate, and is preferably a laminated film that includes a heat-sealing layer and a plastic substrate.
• the resin film may be formed only from the plastic substrate.
• a plastic substrate means a substrate that contains a thermoplastic resin as a main component and has a glass transition temperature (Tg) of 100° C. or higher.
• the heat-sealing layer means a layer containing a thermoplastic resin as a main component and having a glass transition temperature (Tg) of 50° C. or higher.
• the heat-sealing layer is configured as a layer having a glass transition temperature (Tg) lower than that of the plastic substrate.
• the glass transition temperature (Tg) can be measured using a differential scanning calorimeter.
• the main component of the plastic substrate or the heat-sealing layer refers to the component that is contained in the greatest amount (mass %) among the components contained in the plastic substrate or the heat-sealing layer.
• the thermoplastic resin contained in the plastic substrate may be, for example, at least one selected from polyethylene terephthalate, triacetyl cellulose, acrylic resin, polycarbonate, polyethylene, and polyimide, with polyethylene terephthalate or polyethylene being preferred, and polyethylene terephthalate being more preferred.
• Thermoplastic resins contained in the heat-sealing layer include, for example, materials commonly used in heat sealing, and are preferably polyethylene, polypropylene, ethylene vinyl acetate, ionomer, EVA (ethylene-vinyl acetate resin), and EMMA (copolymer resin of ethylene and methyl methacrylate), and more preferably at least one selected from EVA (ethylene-vinyl acetate resin) and EMMA (copolymer resin of ethylene and methyl methacrylate).
• the plastic substrate and the heat-sealing layer may contain desired additives (epoxy resin, nylon, etc.) in addition to the thermoplastic resin.
• the content of the thermoplastic resin relative to the total mass of the heat-sealing layer is not particularly limited, and may be 50% by mass or more, 70% by mass or more, 90% by mass or more, or 100% by mass.
• the resin film is preferably a long strip-shaped resin film.
• the thickness of the resin film is preferably 4 ⁇ m or more, more preferably 4 ⁇ m to 50 ⁇ m, and even more preferably 4 ⁇ m to 20 ⁇ m.
• the upper limit of the thickness of the resin film is not particularly limited, but from the viewpoint of ease of winding up the current collector foil with the resin film, it is, for example, 1 mm.
• the thickness of the resin film is the thickness of the plastic substrate when the resin film is formed only from a plastic substrate, and is the sum of the thickness of the plastic substrate and the thickness of the heat-sealing layer when the resin film is formed from a plastic substrate and a heat-sealing layer.
• the resin film includes a heat-sealing layer and a plastic substrate, and it is preferable that the thickness of the heat-sealing layer and the thickness of the plastic substrate satisfy the relationship shown in the following formula 1.
• Formula 1 0.1 ⁇ [thickness of heat sealable layer] ⁇ [thickness of plastic substrate] ⁇ 1.00
• the thickness of the heat-sealing layer and the thickness of the plastic substrate satisfy the relationship shown in the following formula 1A.
• Formula 1A 0.25 ⁇ [thickness of heat sealable layer] ⁇ [thickness of plastic substrate] ⁇ 2.00
• the thicknesses of the heat-sealing layer and the plastic substrate are values measured using the following method.
• the resin film is cut in the thickness direction using any cutting means (e.g., a microtome).
• the cross section is enlarged using a laser microscope, and the thicknesses of the heat-sealing layer and the plastic substrate are measured. Measurements are performed at 10 locations, and the thickness of the heat-sealing layer or the plastic substrate is taken as the arithmetic average of the measurements at the 10 locations.
• the metal foil and the resin film are brought into contact with each other and, if necessary, the contact area between the metal foil and the resin film is pressed.
• the time for which the metal foil is in contact with the resin film is preferably 1 to 10 seconds, and more preferably 2 to 5 seconds, from the viewpoint of preventing wrinkles from occurring.
• Figure 4 is a process diagram showing an example of a process in which a metal foil and a resin film wrapped around a roller are brought into contact with each other, and the roller and the movable stage are moved relative to each other to thermally fuse the metal foil and the resin film.
• the moving stage 32 that has adsorbed the metal foil 30 in step B stops at a predetermined position facing the resin film 34.
• the resin film 34 is supported by two rollers 36.
• the reference numeral 38 denotes a wrap-around roller.
• a specific area of the metal foil 30 is heated by a heating and adsorption area (not shown) of the moving stage 32.
• the adsorption of the metal foil 30 by the moving stage 32 is released after the moving stage 32 arrives at a specific position on the resin film 34 and before the start of the heat fusion process.
• the wrap roller 38 is moved toward the metal foil 30 so as to wrap the resin film 34 at an angle (wrap angle) indicated by ⁇ 1, and the metal foil 30 and the resin film 34 are brought into contact with each other.
• the angle ⁇ 1 can be set to 90° ⁇ 1 ⁇ 180°.
• the angle ⁇ 1 may also be 90°. It is preferable to set the distance between the moving stage 32 and the resin film 34 so that the angle ⁇ 1 is within the above range.
• the wrap roller 38 is moved in the direction of the arrow C1 while rotating in the direction of the arrow C2, and the wrap roller 38 moves away from the moving stage 32.
• the metal foil 30 and the resin film 34 are thermally fused together in part of the area surrounded by the dashed line in FIG. 4 (D).
• Step D Since the movable stage used in the manufacturing method of the present disclosure has an area of the heating and adsorption region that is smaller than the area of the cut metal foil, in step C, an area is formed on part of the metal foil that is not heat-sealed to the resin film.
• the area of the metal foil that is not heat-sealed to the resin film functions as a tab for pulling out electrical wiring in the current collector foil with resin film, so bending of the metal foil that is not heat-sealed to the resin film tends to significantly reduce the product value of the current collector foil with resin film.
• the manufacturing method disclosed herein includes, after step C, step D, in which the area of the metal foil that is not heat-fused to the resin film is pressed against the resin film to flatten it.
• step D By carrying out step D, it is possible to effectively prevent the metal foil from folding in the area that is not heat-fused to the resin film.
• the area of the metal foil that is not heat-sealed to the resin film can be pressed against the resin film to flatten it by using a pressing means such as a roller, or by using the winding pressure when winding the current collector foil with the resin film onto a roll.
• the manufacturing method of the present disclosure may include other steps in addition to step A, step B, step C, and step D.
• steps include a step of perforating the resin film and a step of shaping the current collecting foil heat-fused to the resin film by using a laser.
• a long strip-shaped resin film is used as the resin film, and a series of steps consisting of any of steps A, B, C, and D, etc., are preferably repeatedly and continuously performed.
• a current collector foil with a resin film can be manufactured in which a plurality of metal foils are bonded to the resin film at regular intervals on the resin film.
• FIG. 5 is a schematic diagram showing an example of the configuration of a manufacturing apparatus that performs a series of steps A, B, C, and D of the manufacturing method according to the present disclosure.
• the example manufacturing device shown in Figure 5 is composed of a cutting section (A), a moving section (B), and an attaching section (C).
• the metal foil 40 is pulled out from the roll in the X direction so that it covers the cutting stage 42, and then the metal foil 40 is fixed onto the cutting stage 42 by a fixing member such as a gripper 41.
• the cutting member 43 is moved in the A1 direction to cut the metal foil 40 into a predetermined shape.
• the movable stage 44 adsorbs the cut metal foil 40 and heats it while moving it onto the resin film 45 in the moving section (B).
• the adsorption and heating of the metal foil 40 by the movable stage 44 is performed in a heating and adsorption area (not shown). Note that in this example, after the cutting member 43 moves in the A2 direction, the movable stage 44 adsorbs the cut metal foil 40 to the lower side in the figure.
• the resin film 45 is continuously transported in the Y direction from the roll of the resin film 45 by a pair of transport rollers 48.
• the moving stage 44 which has adsorbed the cut metal foil 40, moves the moving section (B) in the B1 direction, and in the pasting section (C), the metal foil 10 is moved to a predetermined position on the upper side of the resin film 45, which is continuously transported, and the adsorption is released.
• the wrapping roller 47 wraps the resin film 45, and from the lower side in the figure, the resin film 45 supported by the two rollers 46 is brought into contact with the metal foil 10, and the resin film 45 and the metal foil 40 are thermally fused together.
• the moving stage 44 moves in the B2 direction.
• the current collector foil S with the resin film is transported downstream in the Y direction and wound up into a roll body with the metal foil 40 facing outward in the circumferential direction.
• two rollers 46 support the resin film 45 from below in the figure, a moving stage 44 moves the metal foil 10 to a predetermined position on the upper side of the resin film 45 in the figure, and a wrapping roller 47 wraps the resin film 45 from the upper side in the figure, bringing the resin film 45 and the metal foil 10 into contact with each other, thereby heat-sealing the resin film 45 and the metal foil 40.
• a hole-punching member 49 is disposed upstream in the Y direction to provide an opening 49a for pulling out the tab portion of another current collector foil.
• FIG. 6 shows an example of a current collector foil with a resin film obtained by the manufacturing method of the embodiment shown in FIG. 5.
• FIG. 6 shows an example of a current collector foil with a resin film cut into a current collector foil with three metal foils arranged at equal intervals on a resin film, but it goes without saying that the current collector foil with a resin film according to the present disclosure is not limited to this example.
• the resin film-attached current collector foil 50 has three metal foils 52 attached to a resin film 54 at equal intervals.
• the portion indicated by the reference symbol 52a indicates the portion of the metal foil 50 that is not thermally fused to the resin film 54 (i.e., the metal foil that is not thermally fused to the resin film).
• the resin film-attached current collector foil 50 has an opening 56 formed therein for pulling out the tab portion of the other current collector foil.
• ⁇ Metal foil> As the metal foil, an aluminum foil was prepared. The thickness M ( ⁇ m) of the metal foil used in each of the Examples and Comparative Examples is shown in Table 1. The thickness was measured by the above-mentioned measuring method.
• ⁇ Resin film> As the resin film, a roll of a long film (width: 270 mm) consisting of two layers, a plastic base material and a heat-sealing layer, was prepared.
• Plastic substrate polyethylene terephthalate substrate
• Heat-sealing layer EMMA (ethylene and methyl methacrylate copolymer resin) layer
• the thickness A (unit: ⁇ m) of the plastic substrate, the thickness B (unit: ⁇ m) of the heat-sealing layer, and the total thickness C (A+B, unit: ⁇ m) of the resin film are shown in Table 1. The thicknesses were measured using the measurement method described above.
• a moving stage (dimensions: length 203 mm ⁇ width 147 mm ⁇ thickness 30 mm) including a plate-like body having suction holes was prepared as the moving stage.
• the plate-like body having suction holes had a thickness of 15 mm and was made of aluminum.
• the moving stage used had a heating and adsorption area on one surface, which was equipped with a suction mechanism consisting of a plurality of suction holes and an intake pipe connected to the stage and a vacuum pump, and a heating mechanism using a resistance heating method.
• the average opening diameter N (unit: mm) of the suction holes is shown in Table 1.
• Examples 1 to 11, Comparative Example 1 ⁇ Manufacturing Equipment> A manufacturing apparatus having the same configuration as the manufacturing apparatus shown in Fig. 5 was prepared. However, the following changes were made to Examples 1, 2, and 3 and Comparative Example 1.
• the shape of the current collector foil with resin film was configured such that the individual current collector foils were heat-fused to the resin film at regular intervals, similar to current collector foil with resin film 50 shown in Fig. 6.
• the interval between adjacent current collector foils was 40 mm.
• the metal foil constituting the current collecting foil portion has a main body and a tab portion for taking wiring, and its shape is the same as that shown in Fig. 2.
• the dimensions of each portion are shown below. Note that L1, L2, L3, and L4 correspond to the symbols L1, L2, L3, and L4 in Fig. 2. L1: 205 mm, L2: 149 mm, L3: 33 mm, L4: 30 mm.
• Example 2 In the lamination portion (C), the step D was not carried out. That is, after the metal foil and the resin film were heat-sealed, they were cut and stacked without being pressed by the conveying roller pair 47 and taken up.
• Example 3 In the lamination section (C), the metal foil and the resin film were heat-sealed, and then in step D, the film was pressed by the pair of conveying rollers 47 only, and cut and stacked without being wound into a roll body.
• step A In the cutting section (A), step A was not performed. That is, a laminate in which metal foils cut into a predetermined shape were laminated was used.
• the moving section (B) the metal foil was adsorbed from the laminate to a moving stage and moved.
• step D In the lamination portion (C), the step D was not carried out. That is, after the metal foil and the resin film were heat-sealed, they were cut and stacked without being pressed by the conveying roller pair 47 and taken up.
• Step A A metal foil (aluminum foil) wound in a roll shape was fixed to a cutting stage.
• the fixed metal foil was cut into pieces of desired size by sliding a Thomson blade capable of punching out the metal foil with a servo press machine, the pressure of which was set to 600 kgf (5880 N).
• Process B The cut metal foil was attached to the moving stage by operating a vacuum pump, and then the metal foil was moved to a predetermined position facing the resin film by a one-axis robot while being heated. The movement was completed in 3 seconds. The heating temperature was set to 110°C.
• Step C The resin film was brought into contact with the metal foil moved in step B by the wrapping roll. Thereafter, the wrapping roll was rotated at a speed of 3 m/min to thermally fuse the metal foil and the resin film together. Ten successive metal foils were heat-sealed to the resin film while keeping the distance between the metal foils at 40 mm.
• the wrap angle ⁇ is set by the embrace roller, the values of the angle ⁇ are shown in Table 1.
• Step D In step C, a pair of rolls was placed above and below the resin film immediately after the aluminum foil and the resin film were bonded together.
• the gap between the pair of rolls was set to be equal to or less than the thickness of the resin film.
• the laminate of the aluminum foil and the resin film that had undergone step C was transported between the gap. As a result, the area of the aluminum foil that was not heat-sealed to the resin film was pressed by the pair of rolls.
• step D the current collector foil with the resin film was transported at 1 m/min and wound up into a roll.
• the evaluation sample was prepared by cutting the roll of collector foil with resin film obtained as described above into collector foil with resin film, in which 10 sheets of metal foil were heat-fused to the resin film at intervals of 40 mm.
• a quasi-solid-state battery was fabricated using the current collector foil with resin film obtained as described above.
• the quasi-solid-state battery was fabricated as follows.
• Rate of non-defective products ([total number of batteries produced] - [number of current collector foils with resin film that have at least one misalignment/poor wiring/crease/fold]) / [total number of batteries produced] ...
• the metal foil was bonded to the resin film at the desired position with good precision, and the occurrence of wrinkles was suppressed.
• the resin film-attached current collector foils manufactured according to the examples were also excellent in the evaluations of suitability for wiring and folding of the metal foil portions not heat-sealed to the resin film.
• the current collector foils with resin films produced according to the Examples all had a higher non-defective product rate than the current collector foils with resin films produced according to the Comparative Examples.

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• 2023
  • 2023-09-25 JP JP2024555733A patent/JPWO2024075576A1/ja active Pending
  • 2023-09-25 CN CN202380070415.3A patent/CN119998108A/zh active Pending
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  • 2023-09-25 EP EP23874704.2A patent/EP4600023A4/en active Pending
• 2025
  • 2025-03-28 US US19/093,284 patent/US20250222660A1/en active Pending

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