WO2023008752A1 - 전극 건조 장치 및 이를 포함하는 전극 제조 시스템, 그리고 전극을 제조하는 방법 및 이에 의해 제조된 전극 - Google Patents
전극 건조 장치 및 이를 포함하는 전극 제조 시스템, 그리고 전극을 제조하는 방법 및 이에 의해 제조된 전극 Download PDFInfo
- Publication number
- WO2023008752A1 WO2023008752A1 PCT/KR2022/009269 KR2022009269W WO2023008752A1 WO 2023008752 A1 WO2023008752 A1 WO 2023008752A1 KR 2022009269 W KR2022009269 W KR 2022009269W WO 2023008752 A1 WO2023008752 A1 WO 2023008752A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- drying
- active material
- electrode active
- current collector
- Prior art date
Links
- 238000001035 drying Methods 0.000 title claims abstract description 201
- 238000004519 manufacturing process Methods 0.000 title claims description 35
- 238000000034 method Methods 0.000 title claims description 14
- 239000007772 electrode material Substances 0.000 claims abstract description 135
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 239000007773 negative electrode material Substances 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 description 30
- 229910052744 lithium Inorganic materials 0.000 description 10
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 9
- 229910001416 lithium ion Inorganic materials 0.000 description 9
- 230000007423 decrease Effects 0.000 description 8
- 239000007774 positive electrode material Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000006182 cathode active material Substances 0.000 description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000652 nickel hydride Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/001—Drying and oxidising yarns, ribbons or the like
- F26B13/002—Drying coated, e.g. enamelled, varnished, wires
-
- 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
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/007—Treating a particular portion of the web or plate, e.g. the edge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/101—Supporting materials without tension, e.g. on or between foraminous belts
- F26B13/103—Supporting materials without tension, e.g. on or between foraminous belts with mechanical supporting means, e.g. belts, rollers, and fluid impingement arrangement having a displacing effect on the materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/20—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all vertical or steeply inclined
- F26B15/22—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all vertical or steeply inclined the objects or batches of materials being carried by endless belts the objects or batches of material being carried by trays or holders supported by endless belts or chains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
- F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
-
- 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
-
- 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
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to an electrode drying apparatus, an electrode manufacturing system including the same, a method for manufacturing an electrode, and an electrode manufactured thereby.
- Secondary batteries which are highly applicable to each product group and have electrical characteristics such as high energy density, are used not only in portable devices but also in electric vehicles (EVs) or hybrid electric vehicles (HEVs) driven by an electrical driving source. It is universally applied. These secondary batteries have not only the primary advantage of significantly reducing the use of fossil fuels, but also the advantage of not generating any by-products due to the use of energy, so they are attracting attention as a new energy source for eco-friendliness and energy efficiency improvement.
- EVs electric vehicles
- HEVs hybrid electric vehicles
- an electrode applied to a secondary battery is manufactured by coating an electrode active material on an electrode current collector.
- a negative electrode is prepared by coating a slurry containing an anode active material on a negative electrode current collector and then drying the slurry.
- the slurry volume decreases as the solvent contained in the slurry evaporates, and the sliding phenomenon may be further intensified near the boundary between the area where the electrode active material is applied and the area where the electrode active material is not applied.
- an object of the present invention is to prevent the precipitation of lithium ions by maintaining the NP Ratio at a certain level or higher by suppressing the occurrence of a sliding region of the electrode.
- Drying apparatus for achieving the above object is to dry the electrode active material located in the application boundary area including the boundary line between the electrode active material coated portion and the non-coated portion on the electrode current collector.
- a first drying unit configured; and a second drying unit configured to entirely dry the electrode active material applied on the electrode current collector.
- the second drying unit may be configured to dry the electrode active material located in an area other than the application boundary area.
- the second drying unit may be configured to dry both the electrode active material located in the application boundary region and the electrode active material located in an area other than the application boundary region.
- the drying device may be configured such that drying by the first drying unit precedes drying by the second drying unit.
- the drying device may be configured to transfer the electrode current collector along a direction in which the boundary line extends.
- the first drying unit and the second drying unit may be spaced apart from each other along a direction in which the boundary line extends.
- the drying device may further include a boundary detection sensor for detecting the application boundary region.
- the drying apparatus may further include a control unit that controls the movement of the first drying unit to move on the application boundary region by referring to a sensing result of the boundary detection sensor.
- the drying device may further include a transport unit for transporting the electrode current collector coated with the electrode active material in one direction.
- the electrode current collector may be a negative electrode current collector
- the electrode active material may be a negative electrode active material
- an electrode manufacturing system for achieving the above object includes a coating device for applying an electrode active material on at least one surface of an electrode current collector; and a drying device for drying the electrode active material applied by the coating device.
- the electrode manufacturing system may further include a rolling device for rolling the dried electrode active material.
- the electrode manufacturing method for achieving the above object, (S1) preparing an electrode current collector; (S2) applying an electrode active material to at least a portion of the current collector; (S3) drying the electrode active material located in the application boundary region including the boundary line between the electrode active material coated portion and the non-coated portion on the electrode current collector; and (S4) drying the entire area of the current collector; includes
- the step (S4) may be a step of drying the electrode active material located in an area other than the application boundary area.
- the step (S4) may be a step of drying both the electrode active material located in the application area and the electrode active material located in an area other than the application boundary area.
- the drying according to the step (S3) may be preceded by the drying according to the step (S4).
- the electrode manufacturing method may further include transferring the electrode current collector along a direction in which the boundary line extends.
- the drying according to the step (S3) and the drying according to the step (S4) may be simultaneously performed at locations spaced apart from each other along the direction in which the boundary line extends.
- the electrode manufacturing method may further include (S5) rolling the dried electrode active material.
- an electrode according to one aspect of the present invention for achieving the above object includes an electrode current collector and an electrode active material applied on the electrode current collector, and a portion where the electrode active material is applied on the electrode current collector. Drying of the electrode active material portion located in the application boundary area including the boundary line between the electrode active material and the uncoated portion is primarily performed, and the electrode active material applied on the electrode current collector is completely dried secondarily.
- the area dried by the secondary drying may be a part of the electrode active material located in an area other than the application boundary area.
- the area dried by the secondary drying may be the entire area including the electrode active material portion located in the application boundary region and the electrode active material portion located in an area other than the application boundary region.
- the electrode may be a cathode.
- the NP Ratio is maintained at a certain level or higher, and the precipitation of lithium ions is prevented.
- the safety and efficiency of the battery are increased.
- FIG. 2 is a view showing a state in which an electrode active material is applied on an electrode current collector.
- FIG. 3 is a view showing an electrode dried by the drying apparatus of FIG. 1;
- FIG. 4 is a view showing an electrode dried by a conventional drying method.
- FIG. 5 is a view showing a graph for comparing the thickness of the dried electrode active material of FIGS. 3 and 4 .
- FIG. 1 is a view showing a drying apparatus according to an embodiment of the present invention
- FIG. 2 is a view showing a state in which an electrode active material is applied on an electrode current collector.
- a drying apparatus 100 includes a first drying unit 110 and a second drying unit 120 .
- the drying device 100 is a device that dries the electrode 10 during the manufacturing process of the secondary battery.
- the electrode current collector 10a and the electrode active material 10b will be described later in detail with reference to FIGS. 2 to 4 .
- At least one of the first drying unit 110 and the second drying unit 120 may be a hot air blower that supplies air at a temperature higher than room temperature. That is, the electrode active material 10b may be dried using hot air of high temperature.
- At least one of the first drying unit 110 and the second drying unit 120 may be an IR heater (InfraRed Heater).
- An IR heater is a heater that heats an object to be heated by causing molecular movement of the object to be heated using infrared rays. Therefore, when the IR heater is employed in the first drying unit 110 or the second drying unit 120 of the present invention, infrared rays generate molecular motion of the slurry containing the electrode active material 10b to can be heated. Therefore, the electrode active material 10b may be dried by heat.
- the types of the first drying unit 110 and the second drying unit 120 are not limited thereto, and any device capable of smoothly drying the electrode active material 10b can be employed.
- the first drying unit 110 or the second drying unit 120 may be a vacuum dryer that dries the object to be dried using a vacuum.
- the first drying unit 110 removes the electrode active material 10b located in the application boundary region B including the boundary between the coated portion and the non-coated portion of the electrode current collector 10a. It can be configured to dry.
- the second drying unit 120 may be configured to entirely dry the electrode active material 10b coated on the electrode current collector 10a.
- the drying apparatus of the present invention may be configured so that drying by the first drying unit 110 precedes drying by the second drying unit 120 .
- the electrode active material 10b located in the application boundary area B may be transferred to the application boundary area B by the operation sequence and/or arrangement position of the first drying unit 110 and the second drying unit 120. It may be dried earlier than the electrode active material 10b located in the outer region.
- the first drying unit 110 may be disposed upstream of the second drying unit 120 in the transfer direction F of the electrode current collector 10a. Therefore, in the electrode current collector 10a being transported in one direction, the electrode active material 10b located in the application boundary region B may be first dried by the first drying unit 110 .
- the electrode active material 10b located in the application boundary region B where the electrode active material 10b is applied can be controlled. Then, the electrode active material 10b coated on the electrode current collector 10a may be entirely dried by the second drying unit 120 disposed downstream in the transport direction F.
- the second drying unit 120 may be configured to dry the electrode active material 10b located in an area other than the application boundary area B.
- the electrode active material 10b located in the application boundary region B is already dried by the first drying unit 110, when additionally dried by the second drying unit 120, the electrode active material ( A phenomenon in which the electrode active material 10b is broken may occur during a subsequent process such as a rolling process due to the possibility that the volume of 10b) may be excessively reduced and/or overdrying.
- the second drying unit 120 may be configured to exclude the application boundary region B and dry only the electrode active material 10b located in an area other than the application boundary region B. In this case, excessive volume reduction of the electrode active material 10b located in the application boundary region B and/or breakage of the electrode active material 10b during the rolling process may be prevented.
- the second drying unit 120 may dry both the electrode active material 10b located in the application boundary region B and the electrode active material 10b located in an area other than the application boundary region B.
- the size of the electrode 10 may be different. Therefore, when drying various types of electrodes 10 having different sizes, an additional process of dividing the application boundary area B and the area other than the application boundary area B may be required. These additional steps can increase cost and complicate the manufacturing process. Therefore, the second drying unit 120 is applied to the electrode active material 10b located in the application boundary region B and the application boundary region ( All of the electrode active materials 10b located in areas other than B) may be dried at the same time. In this case, drying conditions (drying temperature, drying time, etc.) by the first drying unit 110 and/or the second drying unit 120 may be appropriately adjusted, thereby preventing problems due to overdrying from occurring. can
- the drying apparatus 100 may further include a boundary detection sensor 130 and/or a transfer unit 140 and/or a control unit 150.
- the boundary detection sensor 130 is a sensor that detects the application boundary region (B).
- the boundary detection sensor 130 for example, an image recognition camera, an ultrasonic sensor, and the like may be applied. However, this is an example, and any device capable of detecting a boundary may be employed as the boundary sensor 130 of the present invention.
- Transfer of the electrode current collector 10a may be performed by, for example, the transfer unit 140 .
- the transfer unit 140 may be configured to transfer the electrode 10 in one direction. More specifically, the transfer unit 140 may be configured to transfer the electrode current collector 10a coated with the electrode active material 10b in one direction.
- an uncoated line (not shown) having a predetermined width to which the electrode active material 10b is not applied extends along a direction parallel to the transport direction F of the electrode 10. can be placed. That is, the drying device may be configured to transfer the electrode current collector 10a along a direction in which the boundary line between the coated area and the uncoated area of the electrode active material 10b extends.
- first drying unit 110 and the second drying unit 120 may be spaced apart from each other along a direction in which the boundary line extends, for example.
- first drying unit 110 and the second drying unit 120 are arranged in this way, drying by the first drying unit 110 and the second drying unit 120 is performed along the direction in which the boundary line extends.
- Each may be performed simultaneously at locations spaced apart from each other.
- the transfer unit 140 may be an assembly of a plurality of rollers disposed below the electrode 10 . As the roller rotates, the electrode 10 placed on the roller may be transported in the transport direction F by frictional force. Alternatively, although not shown in the drawing, the transfer unit 140 may be, for example, a conveyor belt.
- the transfer unit 140 may be provided as a part of the drying device 100, or may be provided as a separate component from the drying device 100.
- the transfer unit 140 is, for example, an unwinding roll for unwinding the wound electrode 10 or the electrode current collector 10a and winding the dried electrode 10 again.
- a winding roll may be included.
- the electrode current collector 10a or the electrode 10 may be wound on an unwinding roll.
- the rolled electrode current collector 10a or the electrode 10 may be unwound by rotation of the unwinding roll and transported in a flat shape.
- the electrode current collector 10a enters a coating device to be described later along the transport direction F and then Afterwards, it is possible to enter an area where the drying device 100 is disposed.
- the electrode 10 may enter the area where the drying device 100 is installed along the transport direction F. there is. Thereafter, the dried flat electrode current collector 10a may be re-wound on a winding roll. That is, the electrode current collector 10a or the electrode 10 may be transported in one direction by rotation of the unwinding roll and the winding roll.
- the specific embodiment of the transfer unit 140 is not limited thereto, and any device capable of transferring the electrode current collector 10a or the electrode 10 in one direction may be employed in the transfer unit 140 of the present invention. there is.
- the electrode manufacturing method may further include transferring the electrode current collector 10a along a direction in which the boundary line extends. In this case, the drying according to the step (S3) and the drying according to the step (S4) may be simultaneously performed at positions spaced apart from each other along the direction in which the boundary line extends.
- FIG. 2 is a view showing a state in which an electrode active material is applied on an electrode current collector.
- FIG. 3 is a view showing an electrode dried by the drying apparatus of FIG. 1
- FIG. 4 is a view showing an electrode dried by a conventional drying method.
- the electrode active material 10b does not necessarily mean only a compound acting as a positive electrode active material or a compound acting as a negative electrode active material itself as described above. That is, in the present invention, the electrode active material 10b may further include an additive such as a binder and/or a thickener in addition to a compound acting as a positive electrode active material or a compound acting as a negative electrode active material. Also, in the present invention, the electrode active material 10b may refer to an electrode active material in a slurry state including a solvent for dispersing the above-described materials. That is, in the present invention, the slurry means the electrode active material 10b in a state before drying.
- FIG. 2 is a view showing a state in which the electrode active material 10b is applied on the electrode current collector 10a.
- the electrode active material 10b before drying has a slurry form containing a solvent.
- a slurry containing an electrode active material 10b is applied on an electrode current collector 10a.
- one end of the slurry located in the application boundary region B of the applied slurry has a shape substantially perpendicular to the electrode current collector 10a.
- some degree of sliding may occur at one end of the slurry located in the application boundary region B due to fluidity of the slurry. That is, less slurry can be applied in the application boundary region B than in areas other than the application boundary region B. Therefore, the sliding area may be formed even before the electrode 10 is dried.
- FIG. 3 showing the electrode 10 dried by the drying apparatus 100 according to an embodiment of the present invention, it can be seen that the volume reduction of the slurry in the application boundary region B hardly occurs. . That is, transverse shrinkage of the slurry in the application boundary region (B) is controlled. Therefore, in the electrode 10 dried by the drying apparatus 100 of the present invention, the sliding area S appears only in a very narrow area.
- FIG. 5 is a view showing a graph for comparing the thickness of the dried electrode active material of FIGS. 3 and 4 .
- 3 is an embodiment of the present invention
- FIG. 4 is a comparative example of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Textile Engineering (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
Claims (26)
- 전극 집전체 상에 전극 활물질이 도포된 부분과 도포되지 않은 부분의 경계선을 포함하는 도포 경계 영역에 위치한 전극 활물질을 건조하도록 구성되는 제 1 건조 유닛; 및상기 전극 집전체 상에 도포된 전극 활물질을 전체적으로 건조하도록 구성되는 제 2 건조 유닛;을 포함하는, 건조 장치.
- 제 1 항에 있어서,상기 제 2 건조 유닛은,상기 도포 경계 영역 외의 영역에 위치한 전극 활물질을 건조하도록 구성되는 것을 특징으로 하는 건조 장치.
- 제 1 항에 있어서,상기 제 2 건조 유닛은,상기 도포 경계 영역에 위치한 전극 활물질 및 상기 도포 경계 영역 외의 영역에 위치한 전극 활물질을 모두 건조하도록 구성되는 것을 특징으로 하는 건조 장치.
- 제 1 항에 있어서,상기 건조 장치는,상기 제 1 건조 유닛에 의한 건조가 상기 제 2 건조 유닛에 의한 건조보다 선행되도록 구성되는 것을 특징으로 하는 건조 장치.
- 제 1 항에 있어서,상기 제 1 건조 유닛은,상기 제 2 건조 유닛보다, 상기 전극 집전체의 이송 방향의 상류에 배치되는 것을 특징으로 하는 건조 장치.
- 제 1 항에 있어서,상기 건조 장치는,상기 경계선이 연장되는 방향을 따라 상기 전극 집전체를 이송하도록 구성되는 것을 특징으로 하는 건조 장치.
- 제 6 항에 있어서,상기 제 1 건조 유닛과 상기 제 2 건조 유닛은,상기 경계선이 연장되는 방향을 따라 서로 이격되어 위치하는 것을 특징으로 하는 건조 장치.
- 제 1 항에 있어서,상기 건조 장치는,상기 도포 경계 영역을 감지하는 경계 감지 센서를 더 포함하는 것을 특징으로 하는 건조 장치.
- 제 8 항에 있어서,상기 건조 장치는,상기 경계 감지 센서의 센싱 결과를 참조하여 상기 제 1 건조 유닛이 상기 도포 경계 영역 상으로 이동하도록 그 움직임을 제어하는 제어 유닛을 더 포함하는 것을 특징으로 하는 건조 장치.
- 제 1 항에 있어서,상기 건조 장치는,상기 전극 활물질이 도포된 전극 집전체를 일 방향으로 이송하는 이송 유닛을 더 포함하는 것을 특징으로 하는 건조 장치.
- 제 1 항에 있어서,상기 전극 집전체는, 음극 집전체이고,상기 전극 활물질은 음극 활물질인 것을 특징으로 하는 건조 장치.
- 제 1 항에 있어서,상기 제 1 건조 유닛 및 제 2 건조 유닛 중 적어도 어느 하나는,상온보다 높은 온도의 공기를 공급하는 열풍기인 것을 특징으로 하는 건조 장치.
- 제 1 항에 있어서,상기 제 1 건조 유닛 및 제 2 건조 유닛 중 적어도 어느 하나는,IR 히터(InfraRed Heater)인 것을 특징으로 하는 건조 장치.
- 전극 제조 시스템으로서,전극 집전체의 적어도 일 면 상에 전극 활물질을 도포하는 코팅 장치; 및상기 코팅 장치에서 도포된 전극 활물질을 건조하는 제 1 항 내지 제11항 중 어느 한 항에 기재된 건조 장치; 를 포함하는 전극 제조 시스템.
- 제14항에 있어서,상기 전극 제조 시스템은,건조가 완료된 전극 활물질을 압연하는 압연 장치;를 더 포함하는 것을 특징으로 하는 전극 제조 시스템.
- (S1) 전극 집전체를 마련하는 단계;(S2) 전극 활물질을 상기 전극 집전체의 적어도 일 부분에 도포하는 단계;(S3) 상기 전극 집전체 상에 상기 전극 활물질이 도포된 부분과 도포되지 않은 부분의 경계선을 포함하는 도포 경계 영역에 위치한 전극 활물질을 건조하는 단계; 및(S4) 상기 전극 집전체 상에 도포된 전극 활물질을 전체적으로 건조하는 단계;를 포함하는, 전극 제조 방법.
- 제 16 항에 있어서,상기 (S4) 단계는,상기 도포 경계 영역 외의 영역에 위치한 전극 활물질을 건조하는 단계인 것을 특징으로 하는 전극 제조 방법.
- 제 16 항에 있어서,상기 (S4) 단계는,상기 도포 경계 영역에 위치한 전극 활물질 및 상기 도포 경계 영역 외의 영역에 위치한 전극 활물질을 모두 건조하는 단계인 것을 특징으로 하는 전극 제조 방법.
- 제 16 항에 있어서,상기 전극 집전체의 이송 방향을 따라 임의의 지점에 위치한 전극 활물질 영역을 건조함에 있어서, 상기 (S4) 단계에 따른 건조에 앞서 상기 (S3) 단계에 따른 건조가 선행되는 것을 특징으로 하는 전극 제조 방법.
- 제 16 항에 있어서,상기 전극 제조 방법은,상기 경계선이 연장되는 방향을 따라 상기 전극 집전체를 이송하는 단계;를 더 포함하는 것을 특징으로 하는 전극 제조 방법.
- 제 20 항에 있어서,상기 (S3) 단계에 따른 건조 및 상기 (S4) 단계에 따른 건조는,상기 경계선이 연장되는 방향을 따라 서로 이격된 위치에서 각각 동시에 수행되는 것을 특징으로 하는 전극 제조 방법.
- 제 16 항에 있어서,상기 전극 제조 방법은,(S5) 건조가 완료된 전극 활물질을 압연하는 단계;를 더 포함하는 것을 특징으로 하는 전극 제조 방법.
- 전극 집전체 및 상기 전극 집전체 상에 도포된 전극 활물질을 포함하는 전극으로서,상기 전극 집전체 상에 전극 활물질이 도포된 부분과 도포되지 않은 부분의 경계선을 포함하는 도포 경계 영역에 위치한 전극 활물질 부분에 대한 건조가 1차적으로 이루어지고,상기 전극 집전체 상에 도포된 전극 활물질의 전체적인 건조가 2차적으로 이루어진 전극.
- 제 23 항에 있어서,상기 2차적인 건조에 의해 건조되는 영역은,상기 도포 경계 영역 외의 영역에 위치한 전극 활물질의 일부분인 것을 특징으로 하는 전극.
- 제 23 항에 있어서,상기 2차적인 건조에 의해 건조되는 영역은,상기 도포 경계 영역에 위치한 전극 활물질 부분 및 상기 도포 경계 영역 외의 영역에 위치한 전극 활물질 부분을 포함하는 전체 영역인 것을 특징으로 하는 전극.
- 제 23 항에 있어서,상기 전극은,음극인 것을 특징으로 하는 전극.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22849731.9A EP4297115A1 (en) | 2021-07-26 | 2022-06-28 | Electrode drying apparatus, electrode manufacturing system comprising same, method for manufacturing electrode, and electrode manufactured thereby |
JP2023559807A JP2024513000A (ja) | 2021-07-26 | 2022-06-28 | 電極乾燥装置及びこれを含む電極製造システム、並びに電極を製造する方法及びこれによって製造された電極 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2021-0098017 | 2021-07-26 | ||
KR20210098017 | 2021-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023008752A1 true WO2023008752A1 (ko) | 2023-02-02 |
Family
ID=85087437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/009269 WO2023008752A1 (ko) | 2021-07-26 | 2022-06-28 | 전극 건조 장치 및 이를 포함하는 전극 제조 시스템, 그리고 전극을 제조하는 방법 및 이에 의해 제조된 전극 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4297115A1 (ko) |
JP (1) | JP2024513000A (ko) |
KR (1) | KR20230016577A (ko) |
WO (1) | WO2023008752A1 (ko) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011040371A (ja) * | 2009-08-14 | 2011-02-24 | Sb Limotive Co Ltd | 二次電池用電極板及びこれを含む二次電池 |
JP2012097917A (ja) * | 2010-10-29 | 2012-05-24 | Toyota Motor Corp | 乾燥装置と該装置を用いる二次電池用電極の製造方法 |
KR20120057437A (ko) * | 2010-11-26 | 2012-06-05 | 삼성에스디아이 주식회사 | 이차전지의 전극판 건조장치 및 그 제어방법 |
JP2014017158A (ja) * | 2012-07-10 | 2014-01-30 | Toyota Industries Corp | 電極の製造方法 |
KR20150058351A (ko) * | 2012-09-25 | 2015-05-28 | 도요타지도샤가부시키가이샤 | 2차 전지용 전극의 제조 방법 및 열풍 건조로 |
KR20170092062A (ko) * | 2016-02-02 | 2017-08-10 | (주)피엔티 | 무지부 가열 장치 |
KR20210098017A (ko) | 2020-01-31 | 2021-08-10 | 엘지전자 주식회사 | 공기조화기 |
-
2022
- 2022-06-28 EP EP22849731.9A patent/EP4297115A1/en active Pending
- 2022-06-28 WO PCT/KR2022/009269 patent/WO2023008752A1/ko active Application Filing
- 2022-06-28 JP JP2023559807A patent/JP2024513000A/ja active Pending
- 2022-06-28 KR KR1020220079228A patent/KR20230016577A/ko unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011040371A (ja) * | 2009-08-14 | 2011-02-24 | Sb Limotive Co Ltd | 二次電池用電極板及びこれを含む二次電池 |
JP2012097917A (ja) * | 2010-10-29 | 2012-05-24 | Toyota Motor Corp | 乾燥装置と該装置を用いる二次電池用電極の製造方法 |
KR20120057437A (ko) * | 2010-11-26 | 2012-06-05 | 삼성에스디아이 주식회사 | 이차전지의 전극판 건조장치 및 그 제어방법 |
JP2014017158A (ja) * | 2012-07-10 | 2014-01-30 | Toyota Industries Corp | 電極の製造方法 |
KR20150058351A (ko) * | 2012-09-25 | 2015-05-28 | 도요타지도샤가부시키가이샤 | 2차 전지용 전극의 제조 방법 및 열풍 건조로 |
KR20170092062A (ko) * | 2016-02-02 | 2017-08-10 | (주)피엔티 | 무지부 가열 장치 |
KR20210098017A (ko) | 2020-01-31 | 2021-08-10 | 엘지전자 주식회사 | 공기조화기 |
Also Published As
Publication number | Publication date |
---|---|
KR20230016577A (ko) | 2023-02-02 |
EP4297115A1 (en) | 2023-12-27 |
JP2024513000A (ja) | 2024-03-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018208034A1 (ko) | 리튬 이차전지용 음극의 제조방법 | |
WO2013012292A9 (ko) | 세퍼레이터, 그 제조방법 및 이를 구비한 전기화학소자 | |
EP3335260A1 (en) | Method of preparing electrode for lithium secondary battery and electrode for lithium secondary battery prepared thereby | |
WO2020080710A1 (ko) | 극박의 만곡 개선 및 접힘 현상을 방지할 수 있는 극박의 이송 및 가공방법 | |
WO2023008752A1 (ko) | 전극 건조 장치 및 이를 포함하는 전극 제조 시스템, 그리고 전극을 제조하는 방법 및 이에 의해 제조된 전극 | |
WO2020106033A1 (ko) | 원통형 전지의 제조 방법 및 이를 수행하기 위한 건조 장치 | |
WO2022014753A1 (ko) | 이차전지 스텍킹 장비 | |
WO2023048419A1 (ko) | 전극 코팅장치 및 이를 이용한 전극의 제조방법 | |
WO2014035208A2 (ko) | 이차 전지용 전극 제조 방법 및 장치 | |
WO2023085654A1 (ko) | 무지부의 열 주름을 방지할 수 있는 전극 시트 건조 장치 | |
WO2023085655A1 (ko) | 전극 시트의 열주름 모사장치 및 이를 이용한 모사방법 | |
WO2019231277A1 (ko) | 리튬 이차 전지 제조방법 | |
WO2019139397A1 (ko) | 양극 슬러리 조성물, 이를 사용하여 제조된 양극 및 이를 포함하는 전지 | |
WO2022240008A1 (ko) | 미건조 전극 활물질 슬러리를 압연하는 과정을 포함하는 이차전지용 전극의 제조방법, 및 제조장치 | |
CN218414638U (zh) | 干燥装置、电极制造系统以及电极 | |
WO2022114797A1 (ko) | 전극 건조 시스템 및 전극 건조 방법 | |
WO2023080760A1 (ko) | 이차전지 제조장치 및 이를 이용하는 이차전지 제조방법 | |
WO2022108324A1 (ko) | 전극 건조 자동 제어 시스템 및 전극 건조 자동 제어 방법 | |
WO2021118141A1 (ko) | 전극 활물질 슬러리 도포 전 시트형 집전체의 열처리를 위한 열처리부를 포함하는 이차전지용 전극 제조장치, 및 열처리 과정을 포함하는 이차전지용 전극 제조방법 | |
WO2022039407A1 (ko) | 전극의 압연 방법 | |
WO2022225237A1 (ko) | 이차전지용 전극 건조 조건 자동화 시스템 | |
WO2023101503A1 (ko) | 절연 코팅층이 형성된 양극을 포함하는 전극조립체 | |
WO2023027505A1 (ko) | 이차전지용 전극 슬러리 코팅장치 및 이를 이용한 전극 슬러리 코팅 방법 | |
WO2023210924A1 (ko) | 이차전지의 불량 검사 장치 및 불량 검사 방법 | |
WO2024085648A1 (ko) | 이차전지 및 이의 제조방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22849731 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022849731 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023559807 Country of ref document: JP |
|
ENP | Entry into the national phase |
Ref document number: 2022849731 Country of ref document: EP Effective date: 20230921 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |