WO2013111624A1 - Device for manufacturing electrode sheet material - Google Patents

Device for manufacturing electrode sheet material Download PDF

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Publication number
WO2013111624A1
WO2013111624A1 PCT/JP2013/050364 JP2013050364W WO2013111624A1 WO 2013111624 A1 WO2013111624 A1 WO 2013111624A1 JP 2013050364 W JP2013050364 W JP 2013050364W WO 2013111624 A1 WO2013111624 A1 WO 2013111624A1
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WO
WIPO (PCT)
Prior art keywords
main surface
nozzle
sheet material
coating liquid
sub
Prior art date
Application number
PCT/JP2013/050364
Other languages
French (fr)
Japanese (ja)
Inventor
敦 渡邉
藤田　和彦
Original Assignee
東レエンジニアリング株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東レエンジニアリング株式会社 filed Critical 東レエンジニアリング株式会社
Publication of WO2013111624A1 publication Critical patent/WO2013111624A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • H01M4/8825—Methods for deposition of the catalytic active composition
    • H01M4/8828—Coating with slurry or ink
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/06—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • 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
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0407—Methods of deposition of the material by coating on an electrolyte layer
    • 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
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the present invention relates to an apparatus used in a process for producing an electrode sheet material by applying a coating solution for forming a current collector on a sheet-like material that is a core material of the electrode sheet material.
  • a lithium ion battery or a fuel cell includes a long conductive sheet material (for example, aluminum, copper, etc.) having a predetermined width as a sheet material core material, and while continuously conveying the sheet material core material,
  • the electrode sheet material is constituted by applying and drying a current collector forming coating solution called an active material on the back surface.
  • the electrode sheet material is stacked in layers while sandwiching a porous sheet called a separator, and the stacked positive and negative electrodes and separator are inserted into a bag made of an exterior film, and an electrolyte solution is injected therein.
  • the size of the positive electrode on the battery configuration is larger than the size of the negative electrode, and in order to improve safety, an electrolyte solution is injected into the separator after the positive electrode is laminated.
  • an electrolyte solution is injected into the separator after the positive electrode is laminated.
  • JP 2009-202141 A Japanese Patent Laid-Open No. 2002-028560 Japanese Patent Laid-Open No. 05-0776818
  • the first main surface application main nozzle 31a on one side (first main surface side: upper side in the figure) with respect to the sheet material core material 10c constituting the sheet material 10.
  • the second coating liquid 42a made of an insulating material can be applied using the first main surface coating sub-nozzle 41z1.
  • the opposite surface second main surface side: the lower side in the figure
  • the support roller 71z is disposed at a position facing the application sub nozzle.
  • the support roller 71z and the sheet material core material 10c cannot be held and held.
  • the first coating liquid is applied from the same side using the second main surface application main nozzle 31b while the sheet material is held only by the support roller 71b on the second main surface application side, and then the second main surface is applied.
  • the second coating liquid must be applied using the surface coating sub-nozzle 41z2.
  • the gap between the second main surface application sub-nozzle 41z2 and the sheet material core material 10c is likely to be non-uniform, and the film thickness of the coating liquid applied later to the second main surface side is uniform. It was difficult to make.
  • the present invention uniformly distributes the insulator beside the active material layer applied to the front and back surfaces of the manufacturing process while stably maintaining and transporting the sheet-like material as the core material without increasing the overall line length of the manufacturing process. It aims at providing the manufacturing apparatus of the electrode sheet material which can be apply
  • a sheet material conveying section for continuously conveying the sheet material in a predetermined direction;
  • a first main surface application main nozzle provided with a coating liquid discharge section having a predetermined length in the sheet width direction on the first main surface side of the sheet material;
  • a second main surface application main nozzle provided with a coating liquid discharge portion having a predetermined length in the sheet width direction on the second main surface side of the sheet material;
  • a first main surface application sub-nozzle comprising a coating liquid discharge section having a predetermined length in the sheet width direction on the first main surface side of the sheet material;
  • a second main surface application sub-nozzle comprising a coating liquid discharge portion having a predetermined length in the sheet width direction on the second main surface side of the sheet material;
  • the first main surface application sub-nozzle and the second main surface application sub-nozzle are: The first main surface application main nozzle and the second main surface application main nozzle are disposed downstream in the sheet material conveyance direction and upstream of the drying unit in
  • the first main surface application sub-nozzle coating liquid discharge part is disposed one by one on both outer sides in the sheet material width direction with respect to the first main surface application main nozzle coating liquid discharge part,
  • coating sub nozzle is arrange
  • the active material layer applied to the front and back surfaces of the core sheet is stably maintained and conveyed without increasing the overall line length of the manufacturing process. It is possible to uniformly apply the insulator. Moreover, after apply
  • the coating liquid discharge part of the main nozzle for applying the first main surface is: A plurality are arranged at predetermined intervals in the sheet width direction
  • the coating liquid discharge part of the main nozzle for applying the second main surface is: A plurality are arranged at predetermined intervals in the sheet width direction, Between the plurality of coating liquid discharge portions arranged on the first main surface side, a first main surface intermediate portion application sub nozzle including a coating liquid discharge portion of a predetermined length in the sheet width direction, Between the plurality of coating liquid discharge portions arranged on the second main surface side, a second main surface intermediate portion application sub nozzle including a coating liquid discharge portion of a predetermined length in the sheet width direction, The first main surface intermediate portion application sub-nozzle and the second main surface intermediate portion application sub-nozzle are: 2.
  • the electrode sheet material manufacturing apparatus wherein the electrode sheet material is disposed at a position where the sheet material is held so as to be sandwiched from the first main surface and the second main surface side.
  • a plurality of main nozzles are arranged at predetermined intervals in the sheet width direction.
  • the intermediate application sub nozzles are provided on both sides of the sheet material in the non-stripe application part. It can arrange
  • the invention according to claim 3 The coating liquid discharge portion of the first main surface application sub-nozzle and the coating liquid discharge portion of the second main surface application sub-nozzle are arranged at opposing positions. 2.
  • the electrode sheet material manufacturing apparatus While the electrode sheet passes between the first main surface application sub-nozzle and the second main surface application sub-nozzle, and the second coating liquid is discharged from one sub-nozzle, the other sub-nozzle provides backup support. To play a role. Therefore, when the second coating liquid is discharged from the set of sub-nozzles, the pressing force acts from both sides of the sheet material, so that the sheet material can be held stably and stably transported, The film thickness of the second coating liquid can be made uniform.
  • the coating liquid discharge part of the first main surface application sub-nozzle and the coating liquid discharge part of the second main surface application sub-nozzle are arranged at a predetermined interval in the conveying direction of the sheet material. It is a manufacturing apparatus of the electrode sheet material of Claim 1 or Claim 2.
  • Tension is applied to the sheet material from the first and second main surface sides by the first main surface application sub-nozzle and the second main surface application sub-nozzle arranged at a predetermined interval in the sheet material conveyance direction. Can be granted. Therefore, when the second coating liquid is discharged from the set of sub-nozzles, the pressing force acts from both sides of the sheet material, so that the sheet material can be held stably and stably transported, The film thickness of the second coating liquid can be made uniform.
  • the coating liquid discharge portion of the first main surface application sub-nozzle is attached so as to be rotatable about a direction orthogonal to the first main surface
  • the coating liquid discharge portion of the second main surface application sub-nozzle is attached so as to be rotatable about a direction orthogonal to the second main surface
  • a first main surface application sub-nozzle angle adjusting mechanism capable of adjusting an angle formed between the first main surface application sub-nozzle and the sheet material width direction
  • a second main surface coating sub-nozzle angle adjusting mechanism capable of respectively adjusting an angle formed between the second main surface coating sub-nozzle and the sheet material width direction.
  • the electrode sheet material manufacturing apparatus If the electrode sheet material manufacturing apparatus is used, Set and adjust the angles of the first main surface application sub-nozzle and the second main surface application sub-nozzle so that the tension acting in the width direction of the sheet material is suitable for application. can do. By doing so, it is possible to stably hold and stably convey the sheet material while suppressing sagging and fluttering. Therefore, the gap amount between the sheet material and the second main surface coating main nozzle can be made constant, and the film thickness of the second coating liquid can be made uniform.
  • the invention described in claim 6 The invention described in claim 6
  • the first main surface application sub-nozzle or the second main surface application sub-nozzle is provided with a sub-nozzle position adjustment mechanism that adjusts the position of the sheet material in the thickness direction with respect to the sheet material.
  • An electrode sheet material manufacturing apparatus according to any one of claims 1 to 5.
  • the electrode sheet material manufacturing apparatus Since the distance between the first and second main surface coating sub-nozzles and the sheet material can be adjusted, it is possible to stably hold and stably convey the sheet material while suppressing sagging and fluttering of the sheet material.
  • the film thickness of the liquid can be easily adjusted.
  • the invention described in claim 7 While continuously conveying the sheet material, Supply of the 1st coating liquid discharged from the 1st main surface application main nozzle and the 2nd main surface application main nozzle is performed intermittently, 7.
  • An active material or a carbon material can be intermittently applied to both sides of the sheet-like material as the core material, and an insulator can be applied to the side surfaces of the intermittently applied active material or carbon material.
  • Insulating material can be uniformly applied to the side of the active material layer applied to the front and back surfaces while stably maintaining and transporting the sheet-like material as the core material without increasing the total line length of the manufacturing process. .
  • FIG. 1A is a perspective view showing an example of a form embodying the present invention.
  • FIG. 1B is a side view showing an example of a form embodying the present invention.
  • FIG. 2 is a system configuration diagram showing an example of a form embodying the present invention.
  • the three axes of the orthogonal coordinate system are X, Y, and Z, the XY plane is the horizontal plane, and the Z direction is the vertical direction.
  • the direction of the arrow is expressed as the downstream side, and the opposite direction is expressed as the upstream side.
  • the Y direction is expressed as the width direction.
  • the electrode sheet material manufacturing apparatus 1 includes a sheet material conveyance unit 2, a main nozzle unit 3, a sub nozzle unit 4, a drying unit 5, and a control unit 9.
  • the sheet material conveyance unit 2 rotates the folding roller 22 and the backup roller 23, the sheet winding unit 28 (not illustrated), and these rollers and the sheet winding unit 28, which are attached to an apparatus frame (not illustrated). Therefore, the motor 22m, 23m, and the winding unit rotation drive motor 28m are included.
  • the main nozzle unit 3 includes a first main surface application main nozzle 31a and a second main surface application main nozzle 31b.
  • the first main surface application main nozzle 31a is disposed at a position facing the backup roller 23 with the sheet material core material 10c interposed therebetween, and one surface (first surface) of the sheet material core material 10c from the coating liquid discharge portion 33a.
  • a first coating liquid called an active material is discharged onto one main surface), and a layer of the first coating liquid 32a applied to the first main surface can be formed.
  • the second main surface application main nozzle 31b is disposed on the downstream side of the first main surface application main nozzle 31a, and the first main surface of the sheet material core material 10c from the coating liquid discharge part 33b.
  • the first coating liquid is discharged onto the opposite surface (second main surface), and a layer of the first coating liquid 32b applied to the second main surface can be formed.
  • the sub-nozzle portion 4 includes a first main surface application sub-nozzle 41a and a second main surface application sub-nozzle 41b.
  • the first main surface application sub-nozzle 41a is arranged so that the coating liquid discharge part 43a faces the portion of the first main surface of the sheet material core 10c where the first coating liquid is not applied.
  • the second coating liquid is discharged from the liquid discharge portion 43a, and a layer of the second coating liquid 42a applied to the first main surface can be formed in the uncoated portion.
  • the second main surface application sub-nozzle 41b is disposed so that the coating liquid discharge portion 43b faces the portion of the second main surface of the sheet material core 10c where the first coating liquid is not applied.
  • the second coating liquid is discharged from the liquid discharge portion 43b, and a layer of the second coating liquid 42b applied to the second main surface can be formed on the uncoated portion.
  • the first main surface application sub-nozzle 41a and the second main surface application sub-nozzle 41b are downstream of the second main surface application main nozzle 31b and applied to the first main surface and the second main surface. Furthermore, the first coating liquids 32a and 32b are arranged at positions where the end portions of the second coating liquids 42a and 42b applied to the first main surface and the second main surface adhere to the end portions of the layers of the first coating liquids 32a and 32b. Yes.
  • the drying unit 5 is disposed on the downstream side of the first main surface application sub-nozzle 41a and the second main surface application sub-nozzle 41b, and the first coating liquids 32a and 32b applied to both surfaces of the sheet material core 10c.
  • the second coating liquids 42a and 42b can be dried and solidified.
  • a sheet winding unit 28 (not shown) is disposed on the downstream side of the drying unit 5, and the sheet material core material 10 c is in a conveying state due to the tension between the backup roller 23 and the sheet winding unit 28. Is conveyed in the direction of arrow 10v.
  • the sheet end gripping portion 7 is disposed on the upstream side or the downstream side of the second main surface coating main nozzle, and the first coating liquid is applied to both ends of the sheet material core material 10c.
  • the part which is not present may be gripped from both sides. If it does so, tension
  • the sheet end gripping portion 7 is a portion where the first coating liquid is not applied to the sheet material 10c (that is, the layer of the applied first coating liquid 32a, 32b is not formed), As shown in FIGS. 1A and 1B, the sheet end gripping rollers 71a and 71b can be configured so as to be sandwiched from both sides.
  • the control unit 9 includes a control computer 90, an information input unit 91, an information output unit 92, a reporting unit 93, an information recording unit 94, and a device control unit 95.
  • An information input unit 91, an information output unit 92, a notification unit 93, an information recording unit 94, and a device control unit 95 are connected to the control computer 90.
  • Examples of the control computer 90 include a computer equipped with a numerical operation unit such as a microcomputer, a personal computer, or a workstation.
  • Examples of the information input unit 91 include a keyboard, a mouse, and a switch.
  • Examples of the information output unit 92 include an image display display and a lamp.
  • Examples of the reporting means 93 include a buzzer, a speaker, and a lamp that can alert the worker.
  • Examples of the information recording means 94 include a semiconductor recording medium, a magnetic recording medium, a magneto-optical recording medium, such as a memory card and a data disk.
  • Examples of the device control unit 95 include devices called programmable controllers and motion controllers.
  • the device control unit 95 is connected to the roller rotation drive motors 22m and 23m and the winding unit rotation drive motor 28m, and rotates the respective motors at a predetermined rotation speed to convey the sheet material core material 10c at a predetermined speed. Can be moved.
  • the device control unit 95 is connected to a device (not shown) that supplies the first coating liquid to the first main surface coating main nozzle 31a and the second main surface coating main nozzle 31b.
  • the first application liquid discharged from the main surface coating main nozzle 31a and the second main surface coating main nozzle 31b are started and stopped, and the discharge amount per time can be controlled. Yes.
  • the device control unit 95 is connected to a device (not shown) that supplies the second coating liquid to the first main surface coating sub-nozzle 41a and the second main surface coating sub-nozzle 41b, and the first main surface coating It is configured to be able to control the discharge start / discharge stop of the second coating liquid discharged from the sub nozzle 41a and the second main surface coating sub nozzle 41b, and the discharge amount per time.
  • the electrode sheet material manufacturing apparatus 1 Since the electrode sheet material manufacturing apparatus 1 has such an apparatus configuration, various manufacturing conditions registered in the information recording means 94 are appropriately read from the control computer 90 and the device control unit 95 is read from the control computer 90. Various information can be transmitted to the device, and the device control unit 95 can control each device. Therefore, the electrode sheet material manufacturing apparatus 1 applies the first coating liquid and the second coating liquid to the first and second main surfaces under predetermined conditions while conveying the sheet material 10 at a predetermined speed. be able to.
  • FIG. 3 is a flowchart showing an example of a form embodying the present invention.
  • a series of flows for applying the coating liquid to the sheet material 10 and drying (so-called coating) is shown for each step.
  • each coating solution Prior to coating, each coating solution is filled in each nozzle.
  • the sheet material 10 is set in the sheet material conveyance unit 2 of the electrode sheet material manufacturing apparatus (s101).
  • the sheet material 10 is unwound from an unwinding section (not shown) and is transferred to the folding roller 22, the backup roller 23, the sheet end gripping section 7, and the drying section 5.
  • the winding unit 26 is set so that it can be wound.
  • each nozzle is adjusted (s102) with the sheet material 10 to be coated and the nozzles 31a, 31b, 41a, 42b facing each other. Further, the position and angle of the sheet edge gripping rollers 71a and 71b of the sheet edge gripping portion 7 and the gripping force are adjusted (s103).
  • the sheet material conveyance unit 2 is driven to continuously convey the sheet material 10 (s105).
  • the first coating liquid is discharged from the first main surface application main nozzle 31a, and the first coating liquid is applied to the first main surface of the sheet material 10 (s106).
  • the first coating liquid is discharged from the second main surface application main nozzle 31b, and the first coating liquid is applied to the second main surface of the sheet material 10 (s107).
  • the second coating liquid is discharged from the first main surface application sub-nozzle 41a to apply the second coating liquid to the first main surface of the sheet material 10, and the second main surface application sub-nozzle 41b is used to apply the second coating liquid. And the second coating liquid is applied to the second main surface of the sheet material 10 (s108). Thereafter, the portion where the first coating liquid and the second coating liquid are applied to both surfaces is sent to the downstream drying unit 5 by winding the sheet material 10c (s109). It is determined whether or not all coating has been completed (s115). If it is determined that the coating has been completed, the conveyance of the sheet material 10c is stopped (s118), and the sheet material 10c is taken out from the conveyance unit 2 (s119). On the other hand, if it is determined that all coating has not been completed, the above steps (s105 to s115) are repeated.
  • FIG. 4 is a side view showing an example of a form embodying the present invention, and shows an example of arrangement of sub nozzles.
  • FIG. 4A shows a form in which the first main surface application sub-nozzle 41a is arranged upstream of the second main surface application sub-nozzle 41b.
  • FIG. 4B shows a form in which the first main surface application sub-nozzle 41a and the second main surface application sub-nozzle 41b face each other at a predetermined interval in the sheet thickness direction. Yes.
  • FIG. 4C shows a form in which the first main surface coating sub-nozzle 41a is arranged on the downstream side of the second main surface coating sub-nozzle 41b.
  • seat material 10 will pass between the sub nozzle 41a for 1st main surface application
  • coating sub nozzle will respectively be sheet material 10 1st and Tension can be applied to the sheet material from the second main surface side.
  • pressing forces act from both sides of the sheet material.
  • the sheet material 10 is conveyed while applying tension in the conveyance direction 10v.
  • tension is applied in the conveyance direction from above and below by the above-described sub nozzle, so that the sheet material 10 is stable by suppressing sagging and fluttering of the sheet material. It can be held and stably conveyed.
  • FIG. 5A is a plan view showing an example of another embodiment embodying the present invention
  • FIG. 5B is a side view corresponding to FIG. 5A and shows an example of the attachment angle of each sub-nozzle.
  • the sheet material conveyance direction 10v and the coating liquid discharge portions of the first and second main surface coating sub-nozzles may be arranged not only when they are orthogonal to each other but also at an angle.
  • the first and second main surface coating sub-nozzles are arranged such that the side on which the first coating liquid is not applied is the upstream side, and the side on which the first coating coating liquid is applied. It is good also as a form which inclines and arranges to the downstream. Or it is good also as this reverse direction.
  • the electrode sheet material manufacturing apparatus to which this modification is applied can set and adjust the strength of the tension acting in the width direction of the sheet material to a state suitable for coating, and the sheet material can be slack and fluttered.
  • the angles of the first and second main surface coating sub nozzles with respect to the sheet material conveyance direction 10v may be appropriately set while confirming the state of slack and flutter during conveyance of the actual sheet material 10. By doing so, it is possible to stably hold and stably convey the sheet material while suppressing sagging and fluttering.
  • FIG. 6 is a plan view showing an example of still another embodiment embodying the present invention, in which the layers of the first coating liquids 32a and 32b applied to the first and second main surfaces are formed in two rows ( The example of the attachment angle of the sub nozzles 41a and 41b for 1st and 2nd main surface application
  • the first and second main surface coating sub-nozzles are arranged on the upstream side with the side where the first coating liquid is not applied.
  • the side to which the liquid is applied is inclined to the downstream side, and the sheet material conveyance direction 10v and the coating liquid discharge part of the first and second main surface coating sub nozzles are arranged at the center of the sheet material 10. May be orthogonal. Alternatively, the first and second main surface coating sub-nozzles disposed at both ends of the sheet material 10 may be in the opposite directions.
  • the first and second main surface coating sub-nozzles are not limited to the case where they are arranged at fixed angles as described above, but may be configured to be rotatable about a direction orthogonal to the main surface of the sheet material 10 as a central axis.
  • each sub-nozzle is preferably configured so that it can be rotated to an arbitrary angle by an angle adjusting mechanism and can be stopped at that angle.
  • the first and second main surface coating sub-nozzles are not limited to the case where they are fixedly arranged at the above-mentioned positions, but the positions of the first and second main surface coating sub-nozzles are adjusted in the conveying direction, the width direction, and the thickness direction of the sheet material. It is preferable to be configured to be able to. If it does so, a setup change can be rapidly performed now with respect to the application
  • the electrode sheet material in this invention is an electrode sheet material used for a secondary battery etc., and can specifically illustrate conductive foil-like sheet materials such as aluminum and copper.
  • a 1st coating liquid the paste-form thing containing the material called an active material and a carbon material can be illustrated.
  • the second coating liquid applied to both sides is an insulating material, such as a resin that dissolves in the solution used for the first coating liquid, or a paste that contains a ceramic material. It can be illustrated.
  • FIG. 7A is a perspective view showing an example of still another embodiment that embodies the present invention, in which the layers of the first coating liquids 32a and 32b applied to the first and second main surfaces of the sheet material 10 and It shows a state in which the layers of the second coating liquids 42a and 42b are formed by intermittent coating.
  • FIG. 7B is a side view showing an example of still another embodiment embodying the present invention, and shows a state where the state of intermittent coating shown in FIG. 7A is viewed from the side.
  • the electrode sheet material manufacturing apparatus 1 described above with reference to FIGS. 1A and 1B and FIG. 2 can be used.
  • the electrode sheet material manufacturing apparatus 1 includes the sheet material 10 conveyance speed, the discharge time and discharge stop time of the first coating liquid and the second coating liquid (that is, the application time and non-application time in intermittent application). Is previously registered in the information recording means 94 and transmitted to the control unit 95 through the control computer 90.
  • the first coating liquid is applied to the first main surface so that the non-coating portions I1 and I2 are formed according to the rotation amounts of the roller rotation drive motors 22m and 23m, that is, the travel amount of the sheet material 10.
  • the first coating liquid and the second coating liquid are applied. By doing so, the application state as shown in FIG. 7B can be obtained.
  • the coating start timing of the second coating solution was adjusted, and the length (X direction) in which the layers of the coated second coating solutions 42a and 42b were formed was applied as shown in FIG. 7C. You may make it a little longer than the length (X direction) in which the layer of the 1st coating liquids 32a and 32b was formed.
  • the sheet edge gripping rollers 71a and 71b may be appropriately disposed. As illustrated in FIG. 7C, the sheet edge gripping rollers 71a and 71b may be disposed between the backup roller 23 and the second main surface coating main nozzle 31b. You may arrange
  • Electrode sheet material manufacturing apparatus Sheet material conveyance part 3 Main nozzle part 4 Sub nozzle part 5 Drying part 6 Sub nozzle position adjustment mechanism part 7 Sheet edge part holding part 9 Control part 10 Sheet material 10a Active material 10c Sheet material core material 10i Insulation Material 10v Sheet material conveying direction 22 Folding roller 23 Backup roller 28 Sheet winding unit 22m Roller rotation drive motor 23m Roller rotation drive motor 28m Winding unit rotation drive motor 31a First main surface coating main nozzle 31b Second main surface coating Main nozzle 32a First coating liquid 32b applied to the first main surface First coating liquid 32b applied to the second main surface 33a Coating liquid discharge portion 33b Coating liquid discharge portion 41a First main surface application sub-nozzle 41b First Sub-nozzle for applying two main surfaces 42a Second coating liquid 42b applied to the first main surface 42b Applying to the second main surface The second coating liquid 43a The coating liquid discharge part 43b The coating liquid discharge part 71a The sheet end gripping roller 71b The sheet end gripping roller 71z The support roller 90 The control computer

Abstract

Provided is a device for manufacturing an electrode sheet material that is capable of stably maintaining and transporting a sheet-like material which is a core material, while not having to lengthen a total manufacturing process line length, and capable of coating an insulator uniformly and without a gap in a horizontal direction of an active material layer which is coated onto front and rear surfaces thereof. Specifically, a first main surface coating sub-nozzle and a second main surface coating sub-nozzle are disposed at a downstream side of a sheet material transport direction with respect to a first main surface coating main nozzle and a second main surface coating main nozzle, and at an upstream side of the sheet material transport direction with respect to a dryer portion. A coating liquid discharge portion of the first main surface coating sub-nozzle is disposed on each of both outer sides in a sheet material width direction with respect to a coating liquid discharge portion of the first main surface coating main nozzle, and a coating liquid discharge portion of the second main surface coating sub-nozzle is disposed on each of both outer sides in the sheet material width direction with respect to a coating liquid discharge portion of the second main surface coating main nozzle.

Description

電極シート材の製造装置Electrode sheet material manufacturing equipment
　本発明は、電極シート材の芯材となるシート状材料の上に、集電体形成用の塗工液を塗布して電極シート材を製造する工程に用いられる装置に関する。 The present invention relates to an apparatus used in a process for producing an electrode sheet material by applying a coating solution for forming a current collector on a sheet-like material that is a core material of the electrode sheet material.
　リチウムイオン電池や燃料電池は、所定の幅を持つ長尺の導電性シート材（例えば、アルミや銅など）をシート材芯材として含み、前記シート材芯材を連続搬送させながら、その表面と裏面に活物質と呼ばれる集電体形成用の塗工液を塗布して乾燥させたものを、電極シート材として含んで構成されている。前記電極シート材は、セパレータと呼ばれる多孔質のシートを挟みながら幾重にも積層され、積層後の正極・負極電極とセパレーターは外装フィルムで構成された袋に挿入されて、電解質液が注液される。
通常短絡防止の為、電池構成上の正極電極サイズは、負極電極サイズより大きくなっており、より安全性を高める為に、正極積層後の前記セパレータには、電解質液が注液されている。そして近年は、絶縁効果をより高めるため、活物質の両端部側に、絶縁物を塗布する要望が高まっている。 A lithium ion battery or a fuel cell includes a long conductive sheet material (for example, aluminum, copper, etc.) having a predetermined width as a sheet material core material, and while continuously conveying the sheet material core material, The electrode sheet material is constituted by applying and drying a current collector forming coating solution called an active material on the back surface. The electrode sheet material is stacked in layers while sandwiching a porous sheet called a separator, and the stacked positive and negative electrodes and separator are inserted into a bag made of an exterior film, and an electrolyte solution is injected therein. The
Usually, in order to prevent a short circuit, the size of the positive electrode on the battery configuration is larger than the size of the negative electrode, and in order to improve safety, an electrolyte solution is injected into the separator after the positive electrode is laminated. In recent years, in order to further enhance the insulating effect, there is an increasing demand for applying an insulating material to both ends of the active material.
特開２００９－２０２１４１号公報JP 2009-202141 A 特開２００２－０２８５６０号公報Japanese Patent Laid-Open No. 2002-028560 特開平０５－０７６８１８号公報Japanese Patent Laid-Open No. 05-0776818
　図８（ａ）（ｂ）に示すように、シート材１０を構成するシート材芯材１０ｃに対して、片面（第一主面側：図では上側）に第一主面塗布用メインノズル３１ａを用いて第一塗工液を塗布し、てた後、第一主面塗布用サブノズル４１ｚ１を用いて絶縁物質からなる第二塗工液４２ａを塗布することができる。しかし、反対面（第二主面側：図では下側）を塗布しようとすると、第一主面側が塗布直後の未乾燥状態であるため、塗布用サブノズルと対向する位置にサポートローラ７１ｚを配置して、サポートローラ７１ｚとシート材芯材１０ｃと接触させて把持することはできない。そのため、第二主面塗布側のサポートローラ７１ｂのみでシート材を保持しつつ、同じ側から第二主面塗布用メインノズル３１ｂを用いて第一塗工液を塗布し、その後に第二主面塗布用サブノズル４１ｚ２を用いて第二塗工液を塗布せざるを得ない。このような塗布形態の場合、第二主面塗布用サブノズル４１ｚ２とシート材料芯材１０ｃとのギャップが不均一になりやすく、後から第二主面側に塗布する塗工液の膜厚を均一にすることが困難であった。 As shown in FIGS. 8 (a) and 8 (b), the first main surface application main nozzle 31a on one side (first main surface side: upper side in the figure) with respect to the sheet material core material 10c constituting the sheet material 10. After the first coating liquid is applied using, the second coating liquid 42a made of an insulating material can be applied using the first main surface coating sub-nozzle 41z1. However, when applying the opposite surface (second main surface side: the lower side in the figure), the first main surface side is in an undried state immediately after application, so the support roller 71z is disposed at a position facing the application sub nozzle. Thus, the support roller 71z and the sheet material core material 10c cannot be held and held. Therefore, the first coating liquid is applied from the same side using the second main surface application main nozzle 31b while the sheet material is held only by the support roller 71b on the second main surface application side, and then the second main surface is applied. The second coating liquid must be applied using the surface coating sub-nozzle 41z2. In the case of such an application form, the gap between the second main surface application sub-nozzle 41z2 and the sheet material core material 10c is likely to be non-uniform, and the film thickness of the coating liquid applied later to the second main surface side is uniform. It was difficult to make.
　例えば、このような事象を解消するために、上面側からエアを吹き出すなどして下面から塗布する際に必要な反力が得られるように保持させることも考えられる。しかしこの場合、先に塗布した上面の絶縁膜の一部がエアで流されて薄くなったり、活物質側に飛散して乗り上げてしまったりするなど、別の問題が生じる。また、両面に塗布された活物質を先に乾燥させてから、その両サイドに絶縁物を塗工すると、再乾燥工程が必要となり、ライン全長が長くなってしまうという問題も生じる。 For example, in order to eliminate such a phenomenon, it is also conceivable to hold the reaction force necessary for applying from the lower surface by blowing air from the upper surface side. However, in this case, another problem arises, such as a part of the insulating film on the upper surface previously applied being washed away with air to be thinned or scattered on the active material side. In addition, if the active material applied on both sides is dried first and then an insulating material is applied to both sides thereof, a re-drying step is required, resulting in a problem that the total length of the line becomes long.
　そこで本発明は、製造工程のライン全長を長くすることなく、芯材となるシート状材料を安定保持及び搬送させながら、その表面と裏面に塗布された活物質層の横に絶縁物を均一に塗布することができる、電極シート材の製造装置を提供することを目的とする。 Therefore, the present invention uniformly distributes the insulator beside the active material layer applied to the front and back surfaces of the manufacturing process while stably maintaining and transporting the sheet-like material as the core material without increasing the overall line length of the manufacturing process. It aims at providing the manufacturing apparatus of the electrode sheet material which can be apply | coated.
　以上の課題を解決するために、請求項１に記載の発明は、
　シート材を所定の方向に連続搬送させるシート材搬送部と、
　前記シート材の第一主面側に前記シート幅方向に所定の長さの塗液吐出部を備える
第一主面塗布用メインノズルと、
　前記シート材の第二主面側に前記シート幅方向に所定の長さの塗液吐出部を備える
第二主面塗布用メインノズルと、
　前記シート材の第一主面側に前記シート幅方向に所定の長さの塗液吐出部を備える
第一主面塗布用サブノズルと、
　前記シート材の第二主面側に前記シート幅方向に所定の長さの塗液吐出部を備える
第二主面塗布用サブノズルと、
　前記シート材に塗布された塗液を乾燥させる乾燥部とを備え、
　前記第一主面塗布用サブノズル及び前記第二主面塗布用サブノズルは、
前記第一主面塗布用メインノズル及び前記第二主面塗布用メインノズルに対してシート材搬送方向の下流側であって、前記乾燥部に対してシート材搬送方向の上流側に配置されており、
　前記第一主面塗布用サブノズルの塗液吐出部は、前記第一主面塗布用メインノズルの塗液吐出部に対して前記シート材幅方向の両外側に１つずつ配置されており、
　前記第二主面塗布用サブノズルの塗液吐出部は、前記第二主面塗布用メインノズルの塗液吐出部に対して前記シート材幅方向の両外側に１つずつ配置されている
ことを特徴とする電極シート材の製造装置である。 In order to solve the above problems, the invention described in claim 1
A sheet material conveying section for continuously conveying the sheet material in a predetermined direction;
A first main surface application main nozzle provided with a coating liquid discharge section having a predetermined length in the sheet width direction on the first main surface side of the sheet material;
A second main surface application main nozzle provided with a coating liquid discharge portion having a predetermined length in the sheet width direction on the second main surface side of the sheet material;
A first main surface application sub-nozzle comprising a coating liquid discharge section having a predetermined length in the sheet width direction on the first main surface side of the sheet material;
A second main surface application sub-nozzle comprising a coating liquid discharge portion having a predetermined length in the sheet width direction on the second main surface side of the sheet material;
A drying unit for drying the coating liquid applied to the sheet material,
The first main surface application sub-nozzle and the second main surface application sub-nozzle are:
The first main surface application main nozzle and the second main surface application main nozzle are disposed downstream in the sheet material conveyance direction and upstream of the drying unit in the sheet material conveyance direction. And
The first main surface application sub-nozzle coating liquid discharge part is disposed one by one on both outer sides in the sheet material width direction with respect to the first main surface application main nozzle coating liquid discharge part,
The coating liquid discharge part of said 2nd main surface application | coating sub nozzle is arrange | positioned 1 each on the both outer sides of the said sheet | seat width direction with respect to the coating liquid discharge part of said 2nd main surface application main nozzle. It is the manufacturing apparatus of the electrode sheet material characterized.
　上記電極シート材の製造装置を用いるので、製造工程のライン全長を長くすることなく、芯材となるシート状材料を安定保持及び搬送させながら、その表面と裏面に塗布された活物質層の横に絶縁物を均一に塗布することができる。また、前記シート材を平坦に保った状態で、第一塗工液が塗布されていない両端部に対して、両面から第二塗工液を塗布した後、乾燥部へ搬送することができる。 Since the electrode sheet material manufacturing apparatus is used, the active material layer applied to the front and back surfaces of the core sheet is stably maintained and conveyed without increasing the overall line length of the manufacturing process. It is possible to uniformly apply the insulator. Moreover, after apply | coating a 2nd coating liquid from both surfaces with respect to the both ends which are not apply | coating the 1st coating liquid in the state which kept the said sheet | seat material flat, it can convey to a drying part.
　請求項２に記載の発明は、
　前記第一主面塗布用メインノズルの塗液吐出部は、
前記シート幅方向に所定の間隔を隔てて複数配置されており、
　前記第二主面塗布用メインノズルの塗液吐出部は、
前記シート幅方向に所定の間隔を隔てて複数配置されており、
　前記第一主面側の前記複数配置された塗液吐出部の間には、前記シート幅方向に所定の長さの塗液吐出部を備える第一主面中間部塗布用サブノズルを備え、
　前記第二主面側の前記複数配置された塗液吐出部の間には、前記シート幅方向に所定の長さの塗液吐出部を備える第二主面中間部塗布用サブノズルを備え、
　前記第一主面中間部塗布用サブノズルと前記第二主面中間部塗布用サブノズルとは、
前記シート材を第一主面及び第二主面側から挟むように保持する位置に配置されている
ことを特徴とする、請求項１に記載の電極シート材の製造装置である。 The invention described in claim 2
The coating liquid discharge part of the main nozzle for applying the first main surface is:
A plurality are arranged at predetermined intervals in the sheet width direction,
The coating liquid discharge part of the main nozzle for applying the second main surface is:
A plurality are arranged at predetermined intervals in the sheet width direction,
Between the plurality of coating liquid discharge portions arranged on the first main surface side, a first main surface intermediate portion application sub nozzle including a coating liquid discharge portion of a predetermined length in the sheet width direction,
Between the plurality of coating liquid discharge portions arranged on the second main surface side, a second main surface intermediate portion application sub nozzle including a coating liquid discharge portion of a predetermined length in the sheet width direction,
The first main surface intermediate portion application sub-nozzle and the second main surface intermediate portion application sub-nozzle are:
2. The electrode sheet material manufacturing apparatus according to claim 1, wherein the electrode sheet material is disposed at a position where the sheet material is held so as to be sandwiched from the first main surface and the second main surface side.
　上記電極シート材の製造装置を用いれば、
メインノズルがシート幅方向に所定の間隔を隔てて複数配置されている、多条塗布（いわゆるストライプ塗布）の形態に対して、ストライプ塗布されていない部分に中間部塗布用サブノズルをシート材の両面側に配置し、当該未塗工部に第二塗工液を塗布することができる。さらに、中間部塗布用サブノズルは、シート材を両面側から挟むように保持しているので、前記シート材のバタツキを抑えて安定保持して安定搬送することができ、第二塗工液の膜厚を均一にすることができる。 If the electrode sheet material manufacturing apparatus is used,
A plurality of main nozzles are arranged at predetermined intervals in the sheet width direction. In contrast to the multi-line application (so-called stripe application) form, the intermediate application sub nozzles are provided on both sides of the sheet material in the non-stripe application part. It can arrange | position to the side and a 2nd coating liquid can be apply | coated to the said uncoated part. Further, since the intermediate portion coating sub-nozzle holds the sheet material so as to be sandwiched from both sides, the sheet material can be stably held while stably suppressing the sheet material fluttering, and the second coating liquid film The thickness can be made uniform.
　請求項３に記載の発明は、
　前記第一主面塗布用サブノズルの塗液吐出部と前記第二主面塗布用サブノズルの塗液吐出部とが、対向する位置に配置されている
ことを特徴とする、請求項１又は請求項２に記載の電極シート材の製造装置である。 The invention according to claim 3
The coating liquid discharge portion of the first main surface application sub-nozzle and the coating liquid discharge portion of the second main surface application sub-nozzle are arranged at opposing positions. 2. An apparatus for producing an electrode sheet material according to 2.
　上記電極シート材の製造装置を用いれば、
前記第一主面塗布用サブノズルと前記第二主面塗布用サブノズルとの間を前記電極シートが通り、一方のサブノズルから第二塗工液が吐出している間、他方のサブノズルがバックアップ支持をする役割を果たす。そのため、当該一組のサブノズルから第二塗工液を吐出する際に、シート材両面から押付力が作用し合うので、前記シート材のバタツキを抑えて安定保持して安定搬送することができ、第二塗工液の膜厚を均一にすることができる。 If the electrode sheet material manufacturing apparatus is used,
While the electrode sheet passes between the first main surface application sub-nozzle and the second main surface application sub-nozzle, and the second coating liquid is discharged from one sub-nozzle, the other sub-nozzle provides backup support. To play a role. Therefore, when the second coating liquid is discharged from the set of sub-nozzles, the pressing force acts from both sides of the sheet material, so that the sheet material can be held stably and stably transported, The film thickness of the second coating liquid can be made uniform.
　請求項４に記載の発明は、
　前記第一主面塗布用サブノズルの塗液吐出部と前記第二主面塗布用サブノズルの塗液吐出部とが、前記シート材の搬送方向に所定の間隔を隔てて配置されている
ことを特徴とする、請求項１又は請求項２に記載の電極シート材の製造装置である。 The invention according to claim 4
The coating liquid discharge part of the first main surface application sub-nozzle and the coating liquid discharge part of the second main surface application sub-nozzle are arranged at a predetermined interval in the conveying direction of the sheet material. It is a manufacturing apparatus of the electrode sheet material of Claim 1 or Claim 2.
　上記電極シート材の製造装置を用いれば、
前記シート材の搬送方向に所定の間隔を隔てて配置された、前記第一主面塗布用サブノズルと前記第二主面塗布用サブノズルによって、第一及び第二主面側からシート材に張力を付与することができる。そのため、当該一組のサブノズルから第二塗工液を吐出する際に、シート材両面から押付力が作用し合うので、前記シート材のバタツキを抑えて安定保持して安定搬送することができ、第二塗工液の膜厚を均一にすることができる。 If the electrode sheet material manufacturing apparatus is used,
Tension is applied to the sheet material from the first and second main surface sides by the first main surface application sub-nozzle and the second main surface application sub-nozzle arranged at a predetermined interval in the sheet material conveyance direction. Can be granted. Therefore, when the second coating liquid is discharged from the set of sub-nozzles, the pressing force acts from both sides of the sheet material, so that the sheet material can be held stably and stably transported, The film thickness of the second coating liquid can be made uniform.
　請求項５に記載の発明は、
　前記第一主面塗布用サブノズルの塗液吐出部が、前記第一主面に直交する方向を中心軸として回動可能に取り付けられており、
　前記第二主面塗布用サブノズルの塗液吐出部が、前記第二主面に直交する方向を中心軸として回動可能に取り付けられており、
　前記第一主面塗布用サブノズルと前記シート材幅方向とでなす角度をそれぞれ調節できる、第一主面塗布用サブノズル角度調節機構と、
前記第二主面塗布用サブノズルと前記シート材幅方向とでなす角度をそれぞれ調節できる、第二主面塗布用サブノズル角度調節機構とが備えられている
ことを特徴とする、請求項１～４のいずれかに記載の電極シート材の製造装置である。 The invention described in claim 5
The coating liquid discharge portion of the first main surface application sub-nozzle is attached so as to be rotatable about a direction orthogonal to the first main surface,
The coating liquid discharge portion of the second main surface application sub-nozzle is attached so as to be rotatable about a direction orthogonal to the second main surface,
A first main surface application sub-nozzle angle adjusting mechanism capable of adjusting an angle formed between the first main surface application sub-nozzle and the sheet material width direction;
5. A second main surface coating sub-nozzle angle adjusting mechanism capable of respectively adjusting an angle formed between the second main surface coating sub-nozzle and the sheet material width direction. The electrode sheet material manufacturing apparatus according to any one of the above.
　上記電極シート材の製造装置を用いれば、
前記第一主面塗布用サブノズルと前記第二主面塗布用サブノズルの角度をそれぞれ設定・調節して、前記シート材の幅方向にはたらく張力の強さを、塗布に適した状態になるようにすることができる。そうすることで、前記シート材のたるみやバタツキを抑えて安定保持及び安定搬送をすることができる。そのため、前記シート材と前記第二主面塗布用メインノズルとのギャップ量を一定にすることができ、第二塗工液の膜厚を均一にすることができる。 If the electrode sheet material manufacturing apparatus is used,
Set and adjust the angles of the first main surface application sub-nozzle and the second main surface application sub-nozzle so that the tension acting in the width direction of the sheet material is suitable for application. can do. By doing so, it is possible to stably hold and stably convey the sheet material while suppressing sagging and fluttering. Therefore, the gap amount between the sheet material and the second main surface coating main nozzle can be made constant, and the film thickness of the second coating liquid can be made uniform.
　請求項６に記載の発明は、
　前記第一主面塗布用サブノズル又は前記第二主面塗布用サブノズルには、前記シート材に対し、前記シート材の厚み方向の位置を調節する、サブノズル位置調節機構が備えられていることを特徴とする、請求項１～５のいずれかに記載の電極シート材の製造装置である。 The invention described in claim 6
The first main surface application sub-nozzle or the second main surface application sub-nozzle is provided with a sub-nozzle position adjustment mechanism that adjusts the position of the sheet material in the thickness direction with respect to the sheet material. An electrode sheet material manufacturing apparatus according to any one of claims 1 to 5.
　上記電極シート材の製造装置を用いれば、
前記第一及び第二主面塗布用サブノズルとシート材料との間隔を調節することができるので、前記シート材のたるみやバタツキを抑えて安定保持及び安定搬送をすることができ、第二塗工液の膜厚を容易に調節することができる。 If the electrode sheet material manufacturing apparatus is used,
Since the distance between the first and second main surface coating sub-nozzles and the sheet material can be adjusted, it is possible to stably hold and stably convey the sheet material while suppressing sagging and fluttering of the sheet material. The film thickness of the liquid can be easily adjusted.
　請求項７に記載の発明は、
　前記シート材を連続搬送させながら、
第一主面塗布用メインノズル及び第二主面塗布用メインノズルから吐出される第一塗布液の供給が間欠的に行われ、
第一主面塗布用サブノズル及び第二主面塗布用サブノズルから吐出される第二塗布液の供給が間欠的に行われる
ことを特徴とする、請求項１～６のいずれかに記載の電極シート材の製造装置である。 The invention described in claim 7
While continuously conveying the sheet material,
Supply of the 1st coating liquid discharged from the 1st main surface application main nozzle and the 2nd main surface application main nozzle is performed intermittently,
7. The electrode sheet according to claim 1, wherein the second coating liquid discharged from the first main surface coating sub-nozzle and the second main surface coating sub-nozzle is intermittently supplied. This is a material manufacturing apparatus.
　上記電極シート材の製造装置を用いれば、
前記芯材となるシート状材料の両面に活物質や炭素材料を間欠的に塗工し、間欠塗工された活物質や炭素材料の側面に、絶縁物を塗布することができる。 If the electrode sheet material manufacturing apparatus is used,
An active material or a carbon material can be intermittently applied to both sides of the sheet-like material as the core material, and an insulator can be applied to the side surfaces of the intermittently applied active material or carbon material.
　製造工程のライン全長を長くすることなく、芯材となるシート状材料を安定保持及び搬送させながら、その表面と裏面に塗布された活物質層の横に絶縁物を均一に塗布することができる。 Insulating material can be uniformly applied to the side of the active material layer applied to the front and back surfaces while stably maintaining and transporting the sheet-like material as the core material without increasing the total line length of the manufacturing process. .
本発明を具現化する形態の一例を示す斜視図である。It is a perspective view which shows an example of the form which embodies this invention. 本発明を具現化する形態の一例を示す側面図である。It is a side view which shows an example of the form which embodies this invention. 本発明を具現化する形態の一例を示すシステム構成図である。It is a system configuration figure showing an example of the form which embodies the present invention. 本発明を具現化する形態の一例を示すフロー図である。It is a flowchart which shows an example of the form which embodies this invention. 本発明を具現化する形態の一例を示す平面図である。It is a top view which shows an example of the form which embodies this invention. 本発明を具現化する別の形態の一例を示す平面図である。It is a top view which shows an example of another form which embodies this invention. 本発明を具現化する別の形態の一例を示す斜視図である。It is a perspective view which shows an example of another form which embodies this invention. 本発明を具現化するさらに別の形態の一例を示す平面図である。It is a top view which shows an example of another form which embodies this invention. 本発明を具現化するまたさらに別の形態の一例を示す斜視図である。It is a perspective view which shows an example of another form which embodies this invention. 本発明を具現化するまたさらに別の形態の一例を示す側面図である。It is a side view which shows an example of another form which embodies this invention. 本発明を具現化するまたさらに別の形態の一例を示す側面図である。It is a side view which shows an example of another form which embodies this invention. 従来の実施形態の一例を示す側面図である。It is a side view which shows an example of conventional embodiment.
　本発明を実施するための形態について、図を用いながら説明する。
図１Ａは、本発明を具現化する形態の一例を示す斜視図である。
図１Ｂは、本発明を具現化する形態の一例を示す側面図である。
図２は、本発明を具現化する形態の一例を示すシステム構成図である。
以下各図においては、直交座標系の３軸をＸ、Ｙ、Ｚとし、ＸＹ平面を水平面、Ｚ方向を鉛直方向とする。特にＸ方向は矢印の方向を下流側、その逆方向を上流側と表現し、Ｚ方向は矢印の方向を上、その逆方向を下と表現する。また、Ｙ方向は幅方向と表現する。 DESCRIPTION OF EMBODIMENTS Embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1A is a perspective view showing an example of a form embodying the present invention.
FIG. 1B is a side view showing an example of a form embodying the present invention.
FIG. 2 is a system configuration diagram showing an example of a form embodying the present invention.
In the following drawings, the three axes of the orthogonal coordinate system are X, Y, and Z, the XY plane is the horizontal plane, and the Z direction is the vertical direction. In particular, in the X direction, the direction of the arrow is expressed as the downstream side, and the opposite direction is expressed as the upstream side. The Y direction is expressed as the width direction.
　電極シート材の製造装置１は、シート材搬送部２と、メインノズル部３と、サブノズル部４と、乾燥部５と、制御部９とを含んで、構成されている。 The electrode sheet material manufacturing apparatus 1 includes a sheet material conveyance unit 2, a main nozzle unit 3, a sub nozzle unit 4, a drying unit 5, and a control unit 9.
　シート材搬送部２は、装置フレーム（不図示）に取り付けられた、折返しローラ２２やバックアップローラ２３、シート巻取部２８（不図示）並びに、これらのローラやシート巻取部２８を回転駆動させるためモータ２２ｍ，２３ｍ、巻取部回転駆動モータ２８ｍとを含んで構成されている。 The sheet material conveyance unit 2 rotates the folding roller 22 and the backup roller 23, the sheet winding unit 28 (not illustrated), and these rollers and the sheet winding unit 28, which are attached to an apparatus frame (not illustrated). Therefore, the motor 22m, 23m, and the winding unit rotation drive motor 28m are included.
　メインノズル部３は、第一主面塗布用メインノズル３１ａと、第二主面塗布用メインノズル３１ｂとを含んで構成されている。
第一主面塗布用メインノズル３１ａは、シート材芯材１０ｃを挟んで、バックアップローラ２３と対向する位置に配置されており、塗液吐出部３３ａからシート材芯材１０ｃの片方の面（第一主面）に活物質と呼ばれる第一塗工液を吐出させ、第一主面に塗布された第一塗工液３２ａの層を形成することができるように構成されている。 The main nozzle unit 3 includes a first main surface application main nozzle 31a and a second main surface application main nozzle 31b.
The first main surface application main nozzle 31a is disposed at a position facing the backup roller 23 with the sheet material core material 10c interposed therebetween, and one surface (first surface) of the sheet material core material 10c from the coating liquid discharge portion 33a. A first coating liquid called an active material is discharged onto one main surface), and a layer of the first coating liquid 32a applied to the first main surface can be formed.
　また、第二主面塗布用メインノズル３１ｂは、第一主面塗布用メインノズル３１ａよりも下流側に配置されており、塗液吐出部３３ｂからシート材芯材１０ｃの前記第一主面と反対側の面（第二主面）に第一塗工液を吐出させ、第二主面に塗布された第一塗工液３２ｂの層を形成することができるように構成されている。 Further, the second main surface application main nozzle 31b is disposed on the downstream side of the first main surface application main nozzle 31a, and the first main surface of the sheet material core material 10c from the coating liquid discharge part 33b. The first coating liquid is discharged onto the opposite surface (second main surface), and a layer of the first coating liquid 32b applied to the second main surface can be formed.
　サブノズル部４は、第一主面塗布用サブノズル４１ａと、第二主面塗布用サブノズル４１ｂとを含んで構成されている。
第一主面塗布用サブノズル４１ａは、その塗液吐出部４３ａがシート材芯材１０ｃの第一主面の第一塗工液が塗布されていない部分と対向するように配置されており、塗液吐出部４３ａから第二塗工液を吐出させて、前記未塗布部分に、第一主面に塗布された第二塗工液４２ａの層を形成することができるように構成されている。 The sub-nozzle portion 4 includes a first main surface application sub-nozzle 41a and a second main surface application sub-nozzle 41b.
The first main surface application sub-nozzle 41a is arranged so that the coating liquid discharge part 43a faces the portion of the first main surface of the sheet material core 10c where the first coating liquid is not applied. The second coating liquid is discharged from the liquid discharge portion 43a, and a layer of the second coating liquid 42a applied to the first main surface can be formed in the uncoated portion.
　第二主面塗布用サブノズル４１ｂは、その塗液吐出部４３ｂがシート材芯材１０ｃの第二主面の第一塗工液が塗布されていない部分と対向するように配置されており、塗液吐出部４３ｂから第二塗工液を吐出させて、前記未塗布部分に、第二主面に塗布された第二塗工液４２ｂの層を形成することができるように構成されている。 The second main surface application sub-nozzle 41b is disposed so that the coating liquid discharge portion 43b faces the portion of the second main surface of the sheet material core 10c where the first coating liquid is not applied. The second coating liquid is discharged from the liquid discharge portion 43b, and a layer of the second coating liquid 42b applied to the second main surface can be formed on the uncoated portion.
　なお、第一主面塗布用サブノズル４１ａ及び第二主面塗布用サブノズル４１ｂは、第二主面塗布用メインノズル３１ｂよりも下流側であって、第一主面及び第二主面に塗布された第一塗工液３２ａ，３２ｂの層の端部に、第一主面及び第二主面に塗布された第二塗工液４２ａ，４２ｂの端部が付着するような位置に配置されている。 The first main surface application sub-nozzle 41a and the second main surface application sub-nozzle 41b are downstream of the second main surface application main nozzle 31b and applied to the first main surface and the second main surface. Furthermore, the first coating liquids 32a and 32b are arranged at positions where the end portions of the second coating liquids 42a and 42b applied to the first main surface and the second main surface adhere to the end portions of the layers of the first coating liquids 32a and 32b. Yes.
　乾燥部５は、第一主面塗布用サブノズル４１ａ及び第二主面塗布用サブノズル４１ｂの下流側に配置されており、シート材芯材１０ｃの両面に塗布された第一塗工液３２ａ，３２ｂ並びに第二塗工液４２ａ，４２ｂを乾燥・固化させることができる。 The drying unit 5 is disposed on the downstream side of the first main surface application sub-nozzle 41a and the second main surface application sub-nozzle 41b, and the first coating liquids 32a and 32b applied to both surfaces of the sheet material core 10c. In addition, the second coating liquids 42a and 42b can be dried and solidified.
　乾燥部５の下流側にはシート巻取部２８（不図示）が配置されており、シート材芯材１０ｃは、バックアップローラ２３とシート巻取部２８との間の張力により、搬送中の姿勢を保ちながら、矢印１０ｖの方向に搬送される。このとき、第二主面塗布用メインノズルの上流側や下流側には、シート端部把持部７を配置し、シート材芯材１０ｃの両端部であって第一塗工液が塗布されていない部分を両面から把持しても良い。そうすれば、シート材に対して幅方向に張力を付与し、たるみを取ることができる。このとき、シート端部把持部７は、シート材１０ｃに第一塗工液が塗布されていない（つまり、塗布された第一塗工液３２ａ，３２ｂの層が形成されていない）部分を、図１Ａ，Ｂに示すように、両面から挟むように取り付けられたシート端部把持用ローラ７１ａ，７１ｂで構成することができる。 A sheet winding unit 28 (not shown) is disposed on the downstream side of the drying unit 5, and the sheet material core material 10 c is in a conveying state due to the tension between the backup roller 23 and the sheet winding unit 28. Is conveyed in the direction of arrow 10v. At this time, the sheet end gripping portion 7 is disposed on the upstream side or the downstream side of the second main surface coating main nozzle, and the first coating liquid is applied to both ends of the sheet material core material 10c. The part which is not present may be gripped from both sides. If it does so, tension | tensile_strength can be provided with respect to the sheet | seat material in the width direction, and a slack can be taken. At this time, the sheet end gripping portion 7 is a portion where the first coating liquid is not applied to the sheet material 10c (that is, the layer of the applied first coating liquid 32a, 32b is not formed), As shown in FIGS. 1A and 1B, the sheet end gripping rollers 71a and 71b can be configured so as to be sandwiched from both sides.
　制御部９には、制御用コンピュータ９０と、情報入力手段９１と、情報出力手段９２と、発報手段９３と、情報記録手段９４と、機器制御ユニット９５が含まれて構成されている。制御用コンピュータ９０には、情報入力手段９１と、情報出力手段９２と、発報手段９３と、情報記録手段９４と、機器制御ユニット９５が接続されている。 The control unit 9 includes a control computer 90, an information input unit 91, an information output unit 92, a reporting unit 93, an information recording unit 94, and a device control unit 95. An information input unit 91, an information output unit 92, a notification unit 93, an information recording unit 94, and a device control unit 95 are connected to the control computer 90.
　制御用コンピュータ９０としては、マイコン、パソコン、ワークステーションなどの、数値演算ユニットが搭載されたものが例示される。
情報入力手段９１としては、キーボードやマウスやスイッチなどが例示される。
情報出力手段９２としては、画像表示ディスプレイやランプなどが例示される。
発報手段９３としては、ブザーやスピーカ、ランプなど、作業者に注意喚起をすることができるものが例示される。
情報記録手段９４としては、メモリーカードやデータディスクなどの、半導体記録媒体や磁気記録媒体や光磁気記録媒体などが例示される。
機器制御ユニット９５としては、プログラマブルコントローラやモーションコントローラと呼ばれる機器などが例示される。 Examples of the control computer 90 include a computer equipped with a numerical operation unit such as a microcomputer, a personal computer, or a workstation.
Examples of the information input unit 91 include a keyboard, a mouse, and a switch.
Examples of the information output unit 92 include an image display display and a lamp.
Examples of the reporting means 93 include a buzzer, a speaker, and a lamp that can alert the worker.
Examples of the information recording means 94 include a semiconductor recording medium, a magnetic recording medium, a magneto-optical recording medium, such as a memory card and a data disk.
Examples of the device control unit 95 include devices called programmable controllers and motion controllers.
　機器制御ユニット９５は、ローラ回転駆動モータ２２ｍ，２３ｍ、巻取部回転駆動モータ２８ｍと接続されており、それぞれのモータを所定の回転数で回転させ、シート材芯材１０ｃを所定の速度で搬送移動させることができる。
また、機器制御ユニット９５は、第一主面塗布用メインノズル３１ａ及び第二主面塗布用メインノズル３１ｂに第一塗工液を供給する機器（不図示）と接続されており、第一主面塗布用メインノズル３１ａ及び第二主面塗布用メインノズル３１ｂから吐出される第一塗布液の吐出開始や吐出停止、並びに時間当たりの吐出量について、それぞれ制御することができるように構成されている。 The device control unit 95 is connected to the roller rotation drive motors 22m and 23m and the winding unit rotation drive motor 28m, and rotates the respective motors at a predetermined rotation speed to convey the sheet material core material 10c at a predetermined speed. Can be moved.
The device control unit 95 is connected to a device (not shown) that supplies the first coating liquid to the first main surface coating main nozzle 31a and the second main surface coating main nozzle 31b. The first application liquid discharged from the main surface coating main nozzle 31a and the second main surface coating main nozzle 31b are started and stopped, and the discharge amount per time can be controlled. Yes.
　さらに、機器制御ユニット９５は、第一主面塗布用サブノズル４１ａ及び第二主面塗布用サブノズル４１ｂに第二塗工液を供給する機器（不図示）と接続されており、第一主面塗布用サブノズル４１ａ及び第二主面塗布用サブノズル４１ｂから吐出される第二塗布液の吐出開始や吐出停止、並びに時間当たりの吐出量について、それぞれ制御することができるように構成されている。 Further, the device control unit 95 is connected to a device (not shown) that supplies the second coating liquid to the first main surface coating sub-nozzle 41a and the second main surface coating sub-nozzle 41b, and the first main surface coating It is configured to be able to control the discharge start / discharge stop of the second coating liquid discharged from the sub nozzle 41a and the second main surface coating sub nozzle 41b, and the discharge amount per time.
　電極シート材の製造装置１は、このような装置構成をしているので、情報記録手段９４に登録された種々の製造条件を制御用コンピュータ９０から適宜読み出し、制御用コンピュータ９０から機器制御ユニット９５に対して諸情報を伝送し、機器制御ユニット９５から各機器に対して制御を行うことができる。そのため、電極シート材の製造装置１は、シート材１０を所定の速度で搬送させながら、第一及び第二主面に対して、所定の条件で第一塗布液及び第二塗布液を塗布することができる。 Since the electrode sheet material manufacturing apparatus 1 has such an apparatus configuration, various manufacturing conditions registered in the information recording means 94 are appropriately read from the control computer 90 and the device control unit 95 is read from the control computer 90. Various information can be transmitted to the device, and the device control unit 95 can control each device. Therefore, the electrode sheet material manufacturing apparatus 1 applies the first coating liquid and the second coating liquid to the first and second main surfaces under predetermined conditions while conveying the sheet material 10 at a predetermined speed. be able to.
　［塗工フロー］
図３は、本発明を具現化する形態の一例を示すフロー図である。図３では、シート材１０に対して塗工液を塗布し乾燥（いわゆる塗工）させる一連のフローが、ステップ毎に示されている。塗工に先立ち、各塗工液はそれぞれのノズルに充填しておく。 [Coating flow]
FIG. 3 is a flowchart showing an example of a form embodying the present invention. In FIG. 3, a series of flows for applying the coating liquid to the sheet material 10 and drying (so-called coating) is shown for each step. Prior to coating, each coating solution is filled in each nozzle.
　先ず、シート材１０を、電極シート材の製造装置のシート材搬送部２にセットする（ｓ１０１）。図１Ａ，Ｂに示した形態の装置構成では、シート材１０を巻出部（不図示）から巻き出し、折返しローラ２２、バックアップローラ２３、シート端部把持部７、乾燥部５へと架け渡し、巻取部２６で巻き取ることができるようにセットする。 First, the sheet material 10 is set in the sheet material conveyance unit 2 of the electrode sheet material manufacturing apparatus (s101). In the apparatus configuration shown in FIGS. 1A and 1B, the sheet material 10 is unwound from an unwinding section (not shown) and is transferred to the folding roller 22, the backup roller 23, the sheet end gripping section 7, and the drying section 5. The winding unit 26 is set so that it can be wound.
　次に、塗工対象となるシート材１０と、前記各ノズル３１ａ，３１ｂ，４１ａ，４２ｂとを対向させた状態で、前記各ノズル位置や角度を調節し（ｓ１０２）する。さらに、シート端部把持部７のシート端部把持用ローラ７１ａ，７１ｂの位置や角度、把持力を調節する（ｓ１０３）。 Next, the position and angle of each nozzle are adjusted (s102) with the sheet material 10 to be coated and the nozzles 31a, 31b, 41a, 42b facing each other. Further, the position and angle of the sheet edge gripping rollers 71a and 71b of the sheet edge gripping portion 7 and the gripping force are adjusted (s103).
　続いて、シート材搬送部２を駆動し、シート材１０を連続搬送させる（ｓ１０５）。
第一主面塗布用メインノズル３１ａから第一塗工液を吐出させ、シート材１０の第一主面に第一塗工液を塗布する（ｓ１０６）。
第二主面塗布用メインノズル３１ｂから第一塗工液を吐出させ、シート材１０の第二主面に第一塗工液を塗布する（ｓ１０７）。 Subsequently, the sheet material conveyance unit 2 is driven to continuously convey the sheet material 10 (s105).
The first coating liquid is discharged from the first main surface application main nozzle 31a, and the first coating liquid is applied to the first main surface of the sheet material 10 (s106).
The first coating liquid is discharged from the second main surface application main nozzle 31b, and the first coating liquid is applied to the second main surface of the sheet material 10 (s107).
　第一主面塗布用サブノズル４１ａから第二塗工液を吐出させてシート材１０の第一主面に第二塗工液を塗布し、第二主面塗布用サブノズル４１ｂから第二塗工液を吐出させてシート材１０の第二主面に第二塗工液を塗布する（ｓ１０８）。
その後、両面に第一塗工液及び第二塗工液が塗布された部分は、シート材１０ｃが巻き取られることで、下流側の乾燥部５へと送られる（ｓ１０９）
　すべての塗工が終了したかどうかを判断し（ｓ１１５）、終了したと判断されればシート材１０ｃの搬送を停止させ（ｓ１１８）、シート材１０ｃを搬送部２からから取り出す（ｓ１１９）。一方、すべての塗工が終了していないと判断されれば、上記ステップ（ｓ１０５～ｓ１１５）を繰り返す。 The second coating liquid is discharged from the first main surface application sub-nozzle 41a to apply the second coating liquid to the first main surface of the sheet material 10, and the second main surface application sub-nozzle 41b is used to apply the second coating liquid. And the second coating liquid is applied to the second main surface of the sheet material 10 (s108).
Thereafter, the portion where the first coating liquid and the second coating liquid are applied to both surfaces is sent to the downstream drying unit 5 by winding the sheet material 10c (s109).
It is determined whether or not all coating has been completed (s115). If it is determined that the coating has been completed, the conveyance of the sheet material 10c is stopped (s118), and the sheet material 10c is taken out from the conveyance unit 2 (s119). On the other hand, if it is determined that all coating has not been completed, the above steps (s105 to s115) are repeated.
　［サブノズル部詳細］
図４は、本発明を具現化する形態の一例を示す側面図であり、サブノズルの配置例をそれぞれで示している。
図４（ａ）は、第一主面塗布用サブノズル４１ａが、第二主面塗布用サブノズル４１ｂよりも上流側に配置されている形態を示している。　
図４（ｂ）は、第一主面塗布用サブノズル４１ａと、第二主面塗布用サブノズル４１ｂとが対向する位置で、シート厚み方向に所定の間隔を隔てて配置されている形態を示している。
図４（ｃ）は、第一主面塗布用サブノズル４１ａが、第二主面塗布用サブノズル４１ｂよりも下流側に配置されている形態を示している。 [Details of sub nozzle part]
FIG. 4 is a side view showing an example of a form embodying the present invention, and shows an example of arrangement of sub nozzles.
FIG. 4A shows a form in which the first main surface application sub-nozzle 41a is arranged upstream of the second main surface application sub-nozzle 41b.
FIG. 4B shows a form in which the first main surface application sub-nozzle 41a and the second main surface application sub-nozzle 41b face each other at a predetermined interval in the sheet thickness direction. Yes.
FIG. 4C shows a form in which the first main surface coating sub-nozzle 41a is arranged on the downstream side of the second main surface coating sub-nozzle 41b.
　図４（ｂ）に示すような形態であれば、対向して配置された第一主面塗布用サブノズル４１ａと第二主面塗布用サブノズル４１ｂとの間をシート材１０が通過し、一方のサブノズルから第二塗工液が吐出している間、他方のサブノズルがバックアップ支持をする役割を果たす。そのため、当該一組のサブノズルから第二塗工液を吐出する際に、シート材１０の第１主面及び第２主面の双方側から押付力が作用し合うので、前記シート材のバタツキを抑えて安定保持して安定搬送することができ、第二塗工液の膜厚を均一にすることができる。 If it is a form as shown in FIG.4 (b), the sheet | seat material 10 will pass between the sub nozzle 41a for 1st main surface application | coating and the sub nozzle 41b for 2nd main surface application | coating arrange | positioned facing, While the second coating liquid is being discharged from the sub nozzle, the other sub nozzle serves as a backup support. Therefore, when the second coating liquid is discharged from the set of sub-nozzles, the pressing force acts from both the first main surface and the second main surface of the sheet material 10, so that the sheet material does not flutter. It is possible to suppress and stably hold and stably convey, and the film thickness of the second coating liquid can be made uniform.
　一方、図４（ａ）や、図４（ｃ）に示すような形態であれば、前記第一主面塗布用サブノズルと前記第二主面塗布用サブノズルとは、それぞれシート材１０第一及び第二主面側からシート材に張力を付与することができる。
そのため、当該一組のサブノズルから第二塗工液を吐出する際に、シート材両面から押付力が作用し合う。シート材１０は搬送方向１０ｖに張力を付与しながら搬送されているが、その張力に加えて上述のサブノズルによって搬送方向に上下方向から張力が加わるため、前記シート材のたるみやバタツキを抑えて安定保持及び安定搬送をすることができる。 On the other hand, if it is a form as shown to Fig.4 (a) and FIG.4 (c), said 1st main surface application | coating sub nozzle and said 2nd main surface application | coating sub nozzle will respectively be sheet material 10 1st and Tension can be applied to the sheet material from the second main surface side.
For this reason, when the second coating liquid is discharged from the set of sub nozzles, pressing forces act from both sides of the sheet material. The sheet material 10 is conveyed while applying tension in the conveyance direction 10v. In addition to the tension, tension is applied in the conveyance direction from above and below by the above-described sub nozzle, so that the sheet material 10 is stable by suppressing sagging and fluttering of the sheet material. It can be held and stably conveyed.
　［変形例１］
図５Ａは、本発明を具現化する別の形態の一例を示す平面図であり、図５Ｂは図５Ａに対応する側面図であり、各サブノズルの取り付け角度の例を示している。 [Modification 1]
FIG. 5A is a plan view showing an example of another embodiment embodying the present invention, and FIG. 5B is a side view corresponding to FIG. 5A and shows an example of the attachment angle of each sub-nozzle.
　シート材の搬送方向１０ｖと、第１及び第２主面塗布用サブノズルの塗液吐出部とは、直交する場合のみならず、角度を付けた状態で配置しても良い。例えば、図５Ａに示すように、第１及び第２主面塗布用サブノズルを、第一塗工液が塗布されていない側を上流側に、第一塗工塗工液が塗布されている側を下流側に傾けて配置する形態としても良い。或いは、この逆の向きとしても良い。本変形例を適用させた電極シート材の製造装置は、前記シート材の幅方向にはたらく張力の強さを、塗布に適した状態に設定・調節することができ、前記シート材のたるみやバタツキを抑えて安定保持及び安定搬送をすることができる。このとき、シート材の搬送方向１０ｖに対する第１及び第２主面塗布用サブノズルの角度は、実際のシート材１０の搬送中のたるみやバタツキの状態を確認しながら、適宜設定すればよい。そうすることで、前記シート材のたるみやバタツキを抑えて安定保持及び安定搬送をすることができる。 The sheet material conveyance direction 10v and the coating liquid discharge portions of the first and second main surface coating sub-nozzles may be arranged not only when they are orthogonal to each other but also at an angle. For example, as shown in FIG. 5A, the first and second main surface coating sub-nozzles are arranged such that the side on which the first coating liquid is not applied is the upstream side, and the side on which the first coating coating liquid is applied. It is good also as a form which inclines and arranges to the downstream. Or it is good also as this reverse direction. The electrode sheet material manufacturing apparatus to which this modification is applied can set and adjust the strength of the tension acting in the width direction of the sheet material to a state suitable for coating, and the sheet material can be slack and fluttered. Stable holding and stable conveyance can be achieved. At this time, the angles of the first and second main surface coating sub nozzles with respect to the sheet material conveyance direction 10v may be appropriately set while confirming the state of slack and flutter during conveyance of the actual sheet material 10. By doing so, it is possible to stably hold and stably convey the sheet material while suppressing sagging and fluttering.
　［変形例２］
図６は、本発明を具現化するさらに別の形態の一例を示す平面図であり、第１及び第２主面に塗布された第一塗工液３２ａ，３２ｂの層が２列に形成（いわゆる、ストライプ塗布）されている形態における、第１及び第２主面塗布用サブノズル４１ａ，４１ｂの取り付け角度の例を示している。シート材１０の両端部については、図６に示すように、第１及び第２主面塗布用サブノズルを、第一塗工液が塗布されていない側を上流側に、第一塗工塗工液が塗布されている側を下流側に傾けて配置する形態とし、シート材１０の中央部については、シート材の搬送方向１０ｖと、第１及び第２主面塗布用サブノズルの塗液吐出部とは、直交する形態としても良い。或いは、シート材１０の両端部に配置された第１及び第２主面塗布用サブノズルを、この逆の向きとしても良い。 [Modification 2]
FIG. 6 is a plan view showing an example of still another embodiment embodying the present invention, in which the layers of the first coating liquids 32a and 32b applied to the first and second main surfaces are formed in two rows ( The example of the attachment angle of the sub nozzles 41a and 41b for 1st and 2nd main surface application | coating in the form currently applied with what is called stripe application | coating is shown. For both ends of the sheet material 10, as shown in FIG. 6, the first and second main surface coating sub-nozzles are arranged on the upstream side with the side where the first coating liquid is not applied. The side to which the liquid is applied is inclined to the downstream side, and the sheet material conveyance direction 10v and the coating liquid discharge part of the first and second main surface coating sub nozzles are arranged at the center of the sheet material 10. May be orthogonal. Alternatively, the first and second main surface coating sub-nozzles disposed at both ends of the sheet material 10 may be in the opposite directions.
　第１及び第２主面塗布用サブノズルは、それぞれ上述の角度に固定して配置する場合に限らず、シート材１０の主面と直交する方向を中心軸として、回転可能な構成としても良い。この場合、それぞれのサブノズルについては、角度調節機構によって、任意の角度に回転し、その角度で静止することができるように構成することが好ましい。 The first and second main surface coating sub-nozzles are not limited to the case where they are arranged at fixed angles as described above, but may be configured to be rotatable about a direction orthogonal to the main surface of the sheet material 10 as a central axis. In this case, each sub-nozzle is preferably configured so that it can be rotated to an arbitrary angle by an angle adjusting mechanism and can be stopped at that angle.
　また、第１及び第２主面塗布用サブノズルは、それぞれ上述の位置に固定して配置する場合に限らず、シート材の搬送方向、幅方向並びに厚み方向に位置を調節し、その位置で静止することができるように構成することが好ましい。そうすれば、塗布条件の異なるシート材に対する塗布に対して、迅速に段取り替えを行うことができるようになる。 The first and second main surface coating sub-nozzles are not limited to the case where they are fixedly arranged at the above-mentioned positions, but the positions of the first and second main surface coating sub-nozzles are adjusted in the conveying direction, the width direction, and the thickness direction of the sheet material. It is preferable to be configured to be able to. If it does so, a setup change can be rapidly performed now with respect to the application | coating with respect to the sheet | seat material from which application conditions differ.
　本発明における電極シート材は、２次電池などに用いられる電極シート材で、具体的には、アルミや銅などの導通性のある箔状のシート材を例示することができる。
また、第一塗工液としては、活物質と呼ばれる材料や、炭素材料を含有したペースト状のものを例示することができる。
また、その両サイドに塗布される第二塗工液としては、絶縁性の材料であって、第一塗工液にも用いる溶液に溶解する樹脂や、セラミックス材料を含有したペースト状のものを例示することができる。 The electrode sheet material in this invention is an electrode sheet material used for a secondary battery etc., and can specifically illustrate conductive foil-like sheet materials such as aluminum and copper.
Moreover, as a 1st coating liquid, the paste-form thing containing the material called an active material and a carbon material can be illustrated.
Also, the second coating liquid applied to both sides is an insulating material, such as a resin that dissolves in the solution used for the first coating liquid, or a paste that contains a ceramic material. It can be illustrated.
　［変形例３］
図７Ａは、本発明を具現化するまたさらに別の形態の一例を示す斜視図であり、シート材１０の第１及び第２主面に塗布された第一塗工液３２ａ，３２ｂの層及び第二塗工液４２ａ，４２ｂの層が、間欠塗工により形成されている様子を示している。
図７Ｂは、本発明を具現化するまたさらに別の形態の一例を示す側面図であり、図７Ａに示した間欠塗工の様子を側面から見た様子を示している。
本形態では、上述で図１Ａ，Ｂ並びに図２を用いて説明をした電極シート材の製造装置１を用いることができる。この場合、電極シート材の製造装置１は、シート材１０の搬送速度、第一塗工液並びに第二塗工液の吐出時間と吐出停止時間（つまり、間欠塗工における塗布時間及び非塗布時間の長さ）を予め情報記録手段９４に登録しておき、制御コンピュータ９０を通じて制御ユニット９５に伝送する。 [Modification 3]
FIG. 7A is a perspective view showing an example of still another embodiment that embodies the present invention, in which the layers of the first coating liquids 32a and 32b applied to the first and second main surfaces of the sheet material 10 and It shows a state in which the layers of the second coating liquids 42a and 42b are formed by intermittent coating.
FIG. 7B is a side view showing an example of still another embodiment embodying the present invention, and shows a state where the state of intermittent coating shown in FIG. 7A is viewed from the side.
In this embodiment, the electrode sheet material manufacturing apparatus 1 described above with reference to FIGS. 1A and 1B and FIG. 2 can be used. In this case, the electrode sheet material manufacturing apparatus 1 includes the sheet material 10 conveyance speed, the discharge time and discharge stop time of the first coating liquid and the second coating liquid (that is, the application time and non-application time in intermittent application). Is previously registered in the information recording means 94 and transmitted to the control unit 95 through the control computer 90.
　そして、ローラ回転駆動モータ２２ｍ，２３ｍの回転量、つまりシート材１０の走行量に応じて、非塗工部Ｉ１，Ｉ２が形成されるように、第一塗工液が第一主面塗布用メインノズル３１ａ及び第二主面塗布用メインノズル３１ｂから吐出されるタイミング、並びに、第二塗工液が第一主面塗布用サブノズル４１ａ及び第二主面塗布用サブノズル４１ｂから吐出されるタイミングを併せて、第一塗工液及び第二塗工液を塗布する。そうすることで、図７Ｂに示すような塗布状態を得ることができる。 The first coating liquid is applied to the first main surface so that the non-coating portions I1 and I2 are formed according to the rotation amounts of the roller rotation drive motors 22m and 23m, that is, the travel amount of the sheet material 10. The timing at which the main nozzle 31a and the second main surface application main nozzle 31b are discharged, and the timing at which the second coating liquid is discharged from the first main surface application sub nozzle 41a and the second main surface application sub nozzle 41b. In addition, the first coating liquid and the second coating liquid are applied. By doing so, the application state as shown in FIG. 7B can be obtained.
　このとき、第二塗布液の塗工開始タイミングを調整し、図７Ｃに示すように、塗布された第二塗布液４２ａ，４２ｂの層が形成された長さ（Ｘ方向）が、塗布された第一塗布液３２ａ，３２ｂの層が形成された長さ（Ｘ方向）よりも少し長くなるようにしておいても良い。 At this time, the coating start timing of the second coating solution was adjusted, and the length (X direction) in which the layers of the coated second coating solutions 42a and 42b were formed was applied as shown in FIG. 7C. You may make it a little longer than the length (X direction) in which the layer of the 1st coating liquids 32a and 32b was formed.
　なお、シート端部把持用ローラ７１ａ，７１ｂについては、適宜配置すれば良く、図７Ｃに示すように、バックアップローラ２３と第二主面塗布用メインノズル３１ｂとの間に配置したり、第二主面塗布用メインノズル３１ｂと第二主面塗布用サブノズル４１ｂとの間に配置（図示せず）したりしても良い。また、第１及び第２主面塗布用サブノズルによりシート材料芯材１０ｃのバタツキが抑えられれば、シート端部把持用ローラ７１ａ，７１ｂを配置しなくても良い。
Note that the sheet edge gripping rollers 71a and 71b may be appropriately disposed. As illustrated in FIG. 7C, the sheet edge gripping rollers 71a and 71b may be disposed between the backup roller 23 and the second main surface coating main nozzle 31b. You may arrange | position (not shown) between the main nozzle 31b for main surface application | coating, and the sub nozzle 41b for 2nd main surface application | coating. Further, if the fluttering of the sheet material core material 10c is suppressed by the first and second main surface coating sub-nozzles, the sheet edge gripping rollers 71a and 71b may not be disposed.
　１　　電極シート材の製造装置
　２　　シート材搬送部
　３　　メインノズル部
　４　　サブノズル部
　５　　乾燥部
　６　　サブノズル位置調整機構部
　７　　シート端部把持部
　９　　制御部
　１０　シート材
　１０ａ　活物質
　１０ｃ　シート材芯材
　１０ｉ　絶縁物
　１０ｖ　シート材搬送方向
　２２　折返しローラ
　２３　バックアップローラ
　２８　シート巻取部
　２２ｍ　ローラ回転駆動モータ
　２３ｍ　ローラ回転駆動モータ
　２８ｍ　巻取部回転駆動モータ
　３１ａ　第一主面塗布用メインノズル
　３１ｂ　第二主面塗布用メインノズル
　３２ａ　第一主面に塗布された第一塗工液
　３２ｂ　第二主面に塗布された第一塗工液
　３３ａ　塗液吐出部
　３３ｂ　塗液吐出部
　４１ａ　第一主面塗布用サブノズル
　４１ｂ　第二主面塗布用サブノズル
　４２ａ　第一主面に塗布された第二塗工液
　４２ｂ　第二一主面に塗布された第二塗工液
　４３ａ　塗液吐出部
　４３ｂ　塗液吐出部
　７１ａ　シート端部把持用ローラ
　７１ｂ　シート端部把持用ローラ
　７１ｚ　サポートローラ
　９０　　制御用コンピュータ
　９１　　情報入力手段
　９２　　情報出力手段
　９３　　発報手段
　９４　　情報記録手段
　９５　　制御ユニット
　９６　　画像処理ユニット DESCRIPTION OF SYMBOLS 1 Electrode sheet material manufacturing apparatus 2 Sheet material conveyance part 3 Main nozzle part 4 Sub nozzle part 5 Drying part 6 Sub nozzle position adjustment mechanism part 7 Sheet edge part holding part 9 Control part 10 Sheet material 10a Active material 10c Sheet material core material 10i Insulation Material 10v Sheet material conveying direction 22 Folding roller 23 Backup roller 28 Sheet winding unit 22m Roller rotation drive motor 23m Roller rotation drive motor 28m Winding unit rotation drive motor 31a First main surface coating main nozzle 31b Second main surface coating Main nozzle 32a First coating liquid 32b applied to the first main surface First coating liquid 32b applied to the second main surface 33a Coating liquid discharge portion 33b Coating liquid discharge portion 41a First main surface application sub-nozzle 41b First Sub-nozzle for applying two main surfaces 42a Second coating liquid 42b applied to the first main surface 42b Applying to the second main surface The second coating liquid 43a The coating liquid discharge part 43b The coating liquid discharge part 71a The sheet end gripping roller 71b The sheet end gripping roller 71z The support roller 90 The control computer 91 The information input means 92 The information output means 93 The reporting means 94 Information recording means 95 Control unit 96 Image processing unit

Claims (7)

  1. 　シート材を所定の方向に連続搬送させるシート材搬送部と、
    　前記シート材の第一主面側に前記シート幅方向に所定の長さの塗液吐出部を備える
    第一主面塗布用メインノズルと、
    　前記シート材の第二主面側に前記シート幅方向に所定の長さの塗液吐出部を備える
    第二主面塗布用メインノズルと、
    　前記シート材の第一主面側に前記シート幅方向に所定の長さの塗液吐出部を備える
    第一主面塗布用サブノズルと、
    　前記シート材の第二主面側に前記シート幅方向に所定の長さの塗液吐出部を備える
    第二主面塗布用サブノズルと、
    　前記シート材に塗布された塗液を乾燥させる乾燥部とを備え、
    　前記第一主面塗布用サブノズル及び前記第二主面塗布用サブノズルは、
    前記第一主面塗布用メインノズル及び前記第二主面塗布用メインノズルに対してシート材搬送方向の下流側であって、前記乾燥部に対してシート材搬送方向の上流側に配置されており、
    　前記第一主面塗布用サブノズルの塗液吐出部は、前記第一主面塗布用メインノズルの塗液吐出部に対して前記シート材幅方向の両外側に１つずつ配置されており、
    　前記第二主面塗布用サブノズルの塗液吐出部は、前記第二主面塗布用メインノズルの塗液吐出部に対して前記シート材幅方向の両外側に１つずつ配置されている
    ことを特徴とする電極シート材の製造装置。
    A sheet material conveying section for continuously conveying the sheet material in a predetermined direction;
    A first main surface application main nozzle provided with a coating liquid discharge section having a predetermined length in the sheet width direction on the first main surface side of the sheet material;
    A second main surface application main nozzle provided with a coating liquid discharge portion having a predetermined length in the sheet width direction on the second main surface side of the sheet material;
    A first main surface application sub-nozzle comprising a coating liquid discharge section having a predetermined length in the sheet width direction on the first main surface side of the sheet material;
    A second main surface application sub-nozzle comprising a coating liquid discharge portion having a predetermined length in the sheet width direction on the second main surface side of the sheet material;
    A drying unit for drying the coating liquid applied to the sheet material,
    The first main surface application sub-nozzle and the second main surface application sub-nozzle are:
    The first main surface application main nozzle and the second main surface application main nozzle are disposed downstream in the sheet material conveyance direction and upstream of the drying unit in the sheet material conveyance direction. And
    The first main surface application sub-nozzle coating liquid discharge part is disposed one by one on both outer sides in the sheet material width direction with respect to the first main surface application main nozzle coating liquid discharge part,
    The coating liquid discharge part of said 2nd main surface application | coating sub nozzle is arrange | positioned 1 each on the both outer sides of the said sheet | seat width direction with respect to the coating liquid discharge part of said 2nd main surface application main nozzle. An apparatus for producing an electrode sheet material.
  2. 　前記第一主面塗布用メインノズルの塗液吐出部は、
    前記シート幅方向に所定の間隔を隔てて複数配置されており、
    　前記第二主面塗布用メインノズルの塗液吐出部は、
    前記シート幅方向に所定の間隔を隔てて複数配置されており、
    　前記第一主面側の前記複数配置された塗液吐出部の間には、前記シート幅方向に所定の長さの塗液吐出部を備える第一主面中間部塗布用サブノズルを備え、
    　前記第二主面側の前記複数配置された塗液吐出部の間には、前記シート幅方向に所定の長さの塗液吐出部を備える第二主面中間部塗布用サブノズルを備え、
    　前記第一主面中間部塗布用サブノズルと前記第二主面中間部塗布用サブノズルとは、
    前記シート材を第一主面及び第二主面側から挟むように保持する位置に配置されている
    ことを特徴とする、請求項１に記載の電極シート材の製造装置。
    The coating liquid discharge part of the main nozzle for applying the first main surface is:
    A plurality are arranged at predetermined intervals in the sheet width direction,
    The coating liquid discharge part of the main nozzle for applying the second main surface is:
    A plurality are arranged at predetermined intervals in the sheet width direction,
    Between the plurality of coating liquid discharge portions arranged on the first main surface side, a first main surface intermediate portion application sub nozzle including a coating liquid discharge portion of a predetermined length in the sheet width direction,
    Between the plurality of coating liquid discharge portions arranged on the second main surface side, a second main surface intermediate portion application sub nozzle including a coating liquid discharge portion of a predetermined length in the sheet width direction,
    The first main surface intermediate portion application sub-nozzle and the second main surface intermediate portion application sub-nozzle are:
    2. The electrode sheet material manufacturing apparatus according to claim 1, wherein the sheet material is disposed at a position where the sheet material is held between the first main surface and the second main surface side.
  3. 　前記第一主面塗布用サブノズルの塗液吐出部と前記第二主面塗布用サブノズルの塗液吐出部とが、対向する位置に配置されている
    ことを特徴とする、請求項１又は請求項２に記載の電極シート材の製造装置。
    The coating liquid discharge portion of the first main surface application sub-nozzle and the coating liquid discharge portion of the second main surface application sub-nozzle are arranged at opposing positions. 2. An apparatus for producing an electrode sheet material according to 2.
  4. 　前記第一主面塗布用サブノズルの塗液吐出部と前記第二主面塗布用サブノズルの塗液吐出部とが、前記シート材の搬送方向に所定の間隔を隔てて配置されている
    ことを特徴とする、請求項１又は請求項２に記載の電極シート材の製造装置。
    The coating liquid discharge part of the first main surface application sub-nozzle and the coating liquid discharge part of the second main surface application sub-nozzle are arranged at a predetermined interval in the conveying direction of the sheet material. The manufacturing apparatus of the electrode sheet material of Claim 1 or Claim 2.
  5. 　前記第一主面塗布用サブノズルの塗液吐出部が、前記第一主面に直交する方向を中心軸として回動可能に取り付けられており、
    　前記第二主面塗布用サブノズルの塗液吐出部が、前記第二主面に直交する方向を中心軸として回動可能に取り付けられており、
    　前記第一主面塗布用サブノズルと前記シート材幅方向とでなす角度をそれぞれ調節できる、第一主面塗布用サブノズル角度調節機構と、
    前記第二主面塗布用サブノズルと前記シート材幅方向とでなす角度をそれぞれ調節できる、第二主面塗布用サブノズル角度調節機構とが備えられている
    ことを特徴とする、請求項１～４のいずれかに記載の電極シート材の製造装置。
    The coating liquid discharge portion of the first main surface application sub-nozzle is attached so as to be rotatable about a direction orthogonal to the first main surface,
    The coating liquid discharge portion of the second main surface application sub-nozzle is attached so as to be rotatable about a direction orthogonal to the second main surface,
    A first main surface application sub-nozzle angle adjusting mechanism capable of adjusting an angle formed between the first main surface application sub-nozzle and the sheet material width direction;
    5. A second main surface coating sub-nozzle angle adjusting mechanism capable of respectively adjusting an angle formed between the second main surface coating sub-nozzle and the sheet material width direction. The manufacturing apparatus of the electrode sheet material in any one of.
  6. 　前記第一主面塗布用サブノズル又は前記第二主面塗布用サブノズルには、前記シート材に対し、前記シート材の厚み方向の位置を調節する、サブノズル位置調節機構が備えられていることを特徴とする、請求項１～５のいずれかに記載の電極シート材の製造装置。
    The first main surface application sub-nozzle or the second main surface application sub-nozzle is provided with a sub-nozzle position adjustment mechanism that adjusts the position of the sheet material in the thickness direction with respect to the sheet material. The apparatus for producing an electrode sheet material according to any one of claims 1 to 5.
  7. 　前記シート材を連続搬送させながら、
    第一主面塗布用メインノズル及び第二主面塗布用メインノズルから吐出される第一塗布液の供給が間欠的に行われ、
    第一主面塗布用サブノズル及び第二主面塗布用サブノズルから吐出される第二塗布液の供給が間欠的に行われる
    ことを特徴とする、請求項１～６のいずれかに記載の電極シート材の製造装置。     While continuously conveying the sheet material,
    Supply of the 1st coating liquid discharged from the 1st main surface application main nozzle and the 2nd main surface application main nozzle is performed intermittently,
    7. The electrode sheet according to claim 1, wherein the second coating liquid discharged from the first main surface coating sub-nozzle and the second main surface coating sub-nozzle is intermittently supplied. Material manufacturing equipment.
PCT/JP2013/050364 2012-01-26 2013-01-11 Device for manufacturing electrode sheet material WO2013111624A1 (en)

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