WO2023106585A1 - 전극 제조 장치 - Google Patents
전극 제조 장치 Download PDFInfo
- Publication number
- WO2023106585A1 WO2023106585A1 PCT/KR2022/015047 KR2022015047W WO2023106585A1 WO 2023106585 A1 WO2023106585 A1 WO 2023106585A1 KR 2022015047 W KR2022015047 W KR 2022015047W WO 2023106585 A1 WO2023106585 A1 WO 2023106585A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure roll
- electrode
- manufacturing apparatus
- electrode manufacturing
- pressure
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 76
- 238000003825 pressing Methods 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000037303 wrinkles Effects 0.000 description 15
- 239000011149 active material Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000007773 negative electrode material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000006182 cathode active material Substances 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002631 room-temperature vulcanizate silicone Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/18—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using profiled rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
- B30B11/165—Roll constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/005—Roll constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—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
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
-
- 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 manufacturing apparatus, and more particularly, to an electrode manufacturing apparatus for reducing wrinkles and preventing the occurrence of folds on an uncoated portion of an electrode.
- secondary batteries are of great interest as energy sources for power devices such as electric bicycles, electric vehicles, and hybrid electric vehicles as well as mobile devices such as mobile phones, digital cameras, laptops, and wearable devices.
- Medium-large-sized battery modules are preferably manufactured in a small size and weight as much as possible, so prismatic batteries, pouch-type batteries, etc., which can be stacked with high integration and have a small weight compared to capacity, are mainly used as battery cells of medium-large-sized battery modules.
- the battery module in order to protect the battery cell stack from external shock, heat or vibration, the front and rear are open may include a module frame for accommodating the battery cell stack in the inner space.
- An object to be solved by the present invention is to provide an electrode manufacturing apparatus for reducing wrinkles and preventing the occurrence of folds on an uncoated portion of an electrode.
- An electrode manufacturing apparatus for applying pressure to an electrode including a coated portion and an uncoated portion, comprising: a first pressure roll for applying pressure to the uncoated portion; a second pressure roll for applying pressure to the coating portion; and a connecting portion penetrating the center of the first pressure roll and the center of the second pressure roll, respectively, wherein a difference between a radius of the first pressure roll and a radius of the second pressure roll is a difference between the coated portion and the non-coated portion. It is equal to or smaller than the step between the parts.
- a difference between the radius of the first pressure roll and the radius of the second pressure roll may be greater than 50 um to less than 2000 um.
- the first pressure roll may extend along an end of the coating portion, and the first pressure roll may apply pressure to the uncoated portion and the end portion of the coated portion.
- An end of the coated portion may include a first sliding portion whose thickness decreases in a direction toward the uncoated portion, and the first pressure roll may include a second sliding portion in contact with the first sliding portion.
- a thickness of the second sliding part may be equal to or smaller than a thickness of the first sliding part.
- a thickness of the second sliding part may be greater than 50 um and less than 2000 um.
- the first pressure roll and the second pressure roll may contact each other.
- An outer surface of the first pressure roll in contact with the second pressure roll and an outer surface of the second pressure roll in contact with the first pressure roll may be coated.
- the entire outer surface of the first pressure roll and the entire outer surface of the second pressure roll may be respectively coated.
- At least one fixing part passing through each of the first pressure roll and the second pressure roll may be further included, and the fixing part may be spaced apart from the connection part.
- Each of the first pressure roll and the second pressure roll may be made of at least one material selected from the group consisting of metal, plastic, rubber, and silicon.
- An electrode according to another embodiment of the present invention may be manufactured by the electrode manufacturing apparatus according to the above.
- the present invention is an electrode manufacturing apparatus including a first pressure roll and a second pressure roll, wherein the difference between the radius of the first pressure roll and the radius of the second pressure roll is different from the coating portion of the electrode. It is equal to or smaller than the step of the coating part, so that wrinkles on the uncoated part of the electrode can be alleviated and folding of the uncoated part can be prevented.
- FIG. 1 is a cross-sectional view of an electrode manufacturing apparatus according to an embodiment of the present invention and an electrode manufactured therefrom.
- FIG. 2 is a view showing a cross section of the electrode manufacturing apparatus of FIG. 1 .
- FIG. 3 is a view showing an electrode manufactured from the electrode manufacturing apparatus of FIG. 1;
- FIG. 4 is a cross-sectional view of a state in which each component of the electrode manufacturing apparatus of FIG. 2 is disassembled.
- FIG. 5 is an enlarged view of an uncoated portion when the electrode of FIG. 2 is a cathode.
- FIG. 6 is an enlarged view of an uncoated portion when the electrode of FIG. 2 is an anode.
- FIG. 7 is a graph showing camber levels and tap-up levels according to the step difference between a coated part and an uncoated part of an electrode.
- planar image it means when the target part is viewed from above, and when it is referred to as “cross-sectional image”, it means when a cross section of the target part cut vertically is viewed from the side.
- FIG. 1 is a cross-sectional view of an electrode manufacturing apparatus according to an embodiment of the present invention and an electrode manufactured therefrom.
- 2 is a view showing a cross section of the electrode manufacturing apparatus of FIG. 1 .
- 3 is a view showing an electrode manufactured from the electrode manufacturing apparatus of FIG. 1;
- an electrode manufacturing apparatus 1000 applies pressure to an electrode 100 including a coated portion 150 and an uncoated portion 150. ), a first pressure roll 1100 for applying pressure to the uncoated portion 150; a second pressure roll 1200 applying pressure to the coating unit 150; and a connecting portion 1500 penetrating the center of the first pressure roll 1100 and the center of the second pressure roll 1200, respectively.
- the electrode 100 may include a coated portion 150 and an uncoated portion 150 . More specifically, in the electrode 100, the coating portion 150 may refer to a portion in which an active material layer is formed on the current collector of the electrode. Also, in the electrode 100, the uncoated portion 150 may refer to a portion in which an active material layer is not formed on the current collector of the electrode.
- the coated portion 150 is a portion in which a cathode active material layer is formed on a cathode current collector
- the uncoated portion 150 is a portion in which a cathode active material layer is formed on a cathode current collector. It can mean the part that is not done.
- the coated portion 150 is a portion in which the negative electrode active material layer is formed on the negative electrode current collector, and the uncoated portion 150 is a portion where the negative electrode active material layer is formed on the negative electrode current collector. It may mean a part that is not formed.
- the coating portion 150 may be a portion in which active material layers are formed on the upper and lower surfaces of the electrode current collector, respectively, as shown in FIGS. 1 and 3.
- the coating unit 150 may be a portion in which an active material layer is formed on one of the upper and lower surfaces of the current collector.
- an electrode manufacturing apparatus 1000 may include a first electrode manufacturing apparatus 1001 and a second electrode manufacturing apparatus 1002 .
- the first electrode manufacturing apparatus 1001 may be positioned above the electrode 100
- the second electrode manufacturing apparatus 1002 may be located below the electrode 100 .
- the coated portion 150 of the electrode 100 may be a portion in which active material layers are formed on the upper and lower surfaces of the current collector, respectively, as shown in FIGS. 1 and 3 .
- the electrode manufacturing apparatus 1000 one of the first electrode manufacturing apparatus 1001 and the second electrode manufacturing apparatus 1002 is omitted, and the electrode current collector is located on one electrode manufacturing apparatus.
- the electrode current collector may be pressurized.
- the electrode manufacturing apparatus may press the electrode current collector in the form of a guide roll rather than pressing the electrode current collector from both sides.
- the coated portion 150 of the electrode 100 is a portion in which an active material layer is formed on one of the upper and lower surfaces of the current collector
- the first electrode manufacturing apparatus 1001 in the electrode manufacturing apparatus 1000 and One of the second electrode manufacturing apparatus 1002 may be omitted.
- the electrode manufacturing apparatus 1000 will be mainly described, and both the first electrode manufacturing apparatus 1001 and the second electrode manufacturing apparatus 1002 can be equally described.
- the electrode manufacturing apparatus 1000 includes a first pressure roll 1100 and a second pressure roll 1200 .
- the first pressure roll 1100 may be located on both sides of the second pressure roll 1200, respectively, as shown in FIGS. 1 and 2 .
- the first pressure roll 1100 may be located on only one side of both sides of the second pressure roll 1200, unlike FIGS. 1 and 2 .
- first pressure roll 1100 and the second pressure roll 1200 may each have a ring shape as shown in FIGS. 1 and 2 .
- first pressure roll 1100 and the second pressure roll 1200 may each have a shape in which a plurality of rings are coupled, unlike FIGS. 1 and 2 .
- the electrode manufacturing apparatus 1000 combines the first pressure roll 1100 and the second pressure roll 1200 according to the shape of the electrode 100 (eg, the position of the uncoated portion). Therefore, there is an advantage in that it can be flexibly applied to the shape change of the electrode 100.
- the difference (d1) between the radius of the first pressure roll 1100 and the radius of the second pressure roll 1200 is the step between the coated portion 150 and the uncoated portion 150 ( It can be equal to or smaller than d2). More specifically, based on the respective centers of the first pressure roll 1100 and the second pressure roll 1200, the distance between the center of the first pressure roll 1100 and the pressure surface of the first pressure roll 1100 and the difference (d1) of the distance between the center of the second pressure roll 1200 and the pressing surface of the second pressure roll 1200 is equal to the step difference (d2) between the coated part 150 and the uncoated part 150 or may be smaller than that.
- the difference (d1) between the radius of the first pressure roll 1100 and the radius of the second pressure roll 1200 may be greater than 50 um to less than 2000 um. More specifically, the difference (d1) between the radii of the first pressure roll 1100 and the radius of the second pressure roll 1200 may be greater than or equal to 100 um and less than or equal to 1000 um. For example, the difference (d1) between the radius of the first pressure roll 1100 and the radius of the second pressure roll 1200 may be 300 um or more and 500 um or less.
- the difference (d1) between the radius of the first pressure roll 1100 and the radius of the second pressure roll 1200 is included within the above range, and the electrode ( As the electrode manufacturing apparatus 1000 presses the upper and/or lower portions of the electrode 100, wrinkles of the uncoated portion 110 may be alleviated while increasing the elongation of the uncoated portion 110, and the uncoated portion 110 ) can also be prevented.
- the uncoated portion 110 when the difference (d1) between the radius of the first pressure roll 1100 and the radius of the second pressure roll 1200 is 50 um or less, the uncoated portion 110 ) is insufficient, and the uncoated portion 110 may be folded or wrinkles may be deepened.
- the difference (d1) between the radius of the first pressure roll 1100 and the radius of the second pressure roll 1200 is 2000um or more, the uncoated portion 110 There is a problem of excessive stretching or intensifying wrinkles such as swells.
- the camber value and the lifting value of the uncoated region are in a low range.
- the camber value is a measure of the bending level of the electrode
- the lifting value of the uncoated part is a measure of the level of lifting the uncoated part in a direction perpendicular to the coating surface.
- the first pressure roll 1100 extends along the end of the coated portion 150, and the first pressure roll 1100 includes the uncoated portion 150 and the coated portion ( 150) can be applied with pressure.
- the end of the coated portion 150 includes a first sliding portion 150s whose thickness decreases in a direction toward the uncoated portion 110. can do.
- the first sliding part 150s may be formed as the active material slurry constituting the active material layer flows in a direction toward the uncoated part 110 in forming the active material layer on the electrode current collector.
- the first pressure roll 1100 may include a second sliding part 1100s in contact with the first sliding part 150s of the coating part 150 .
- the second sliding part 1100s may extend along the first sliding part 150s.
- the first pressure roll 1100 includes the second sliding part 1100s corresponding to the first sliding part 150s of the coating part 150, , There is an advantage in that pressure can be uniformly applied to the coating unit 150 and the first sliding unit 150s.
- the thickness of the second sliding part 1100s may be equal to or smaller than the thickness of the first sliding part 150s. That is, the thickness of the second sliding part 1100s may be greater than 50um and less than 2000um. More specifically, the thickness of the second sliding portion 1100s may be greater than or equal to 100 um and less than or equal to 1000 um. For example, the thickness of the second sliding part 1100s may be greater than or equal to 300um and less than or equal to 500um.
- the thickness of the second sliding part 1100s can be described as the same as the difference (d1) between the radii of the first pressure roll 1100 and the radius of the second pressure roll 1200.
- FIG. 4 is a cross-sectional view of a state in which each component of the electrode manufacturing apparatus of FIG. 2 is disassembled.
- first pressure roll 1100 and the second pressure roll 1200 may be coupled to each other through a connecting portion 1500.
- first pressure roll 1100 and the second pressure roll 1200 may contact each other.
- the first pressure roll 1100 and the second pressure roll 1200 may be stably fixed to each other.
- At least one fixing part 1600 passing through the first pressure roll 1100 and the second pressure roll 1200, respectively. may further include.
- the fixing part 1600 may be spaced apart from the connection part 1500 .
- the fixing part 1600 may be made of a member such as a fixing pin.
- the present embodiment is not limited thereto, as long as the member passes through the first pressure roll 1100 and the second pressure roll 1200 and fixes the first pressure roll 1100 and the second pressure roll 1200 to each other.
- the fixing part 1600 may be manufactured in the form of an integral roll without a member such as a fixing pin.
- the first pressure roll 1100 and the second pressure roll 1100 may be more stably fixed.
- the surface of the outer surface of the first pressure roll 1100 in contact with the second pressure roll 1200 and the surface of the outer surface of the second pressure roll 1200 in contact with the first pressure roll 1100 may be coated.
- the entire outer surface of the first pressure roll 1100 and the entire outer surface of the second pressure roll 1200 may be coated, respectively.
- first pressure roll 1100 and the second pressure roll 1200 are coated with anodizing, diamond-like carbon (DLC) coating, hard chromium plating, and silicon, respectively. It may be coated by at least one of coating and rubber coating. However, it is not limited thereto, and any coating method capable of preventing damage and generation of foreign matter due to friction between the first pressure roll 1100 and the second pressure roll 1200 may be included in the present embodiment.
- DLC diamond-like carbon
- silicon silicon
- the electrode manufacturing apparatus 1000 in the electrode manufacturing apparatus 1000 according to the present embodiment, some of the outer surfaces of the first pressure roll 1100 and the second pressure roll 1200 are coated in the above-described manner, so that the first pressure roll 1100 ) and the second pressure roll 1200, it is possible to minimize damage to the first pressure roll 1100 and the second pressure roll 1200 and the generation of foreign substances.
- the outer surfaces of the first pressure roll 1100 and the second pressure roll 1200 may each have a shape considering the position of the uncoated portion 110 and the loading amount or pattern of the coated portion 150.
- the outer surfaces of the first pressure roll 1100 and the second pressure roll 1200 are crown, taper, trapezoid, step, recrown, and half, respectively. It may be made in the shape of one of the crowns (Halfcrown).
- the outer surfaces of the first pressure roll 1100 and the second pressure roll 1200 may be formed in a combination of different shapes. However, it is not limited thereto, and any shape capable of pressing the electrode 100 may be included in the present embodiment.
- the first pressure roll 1100 and the second pressure roll 1200 are configured such as the position of the uncoated portion 110 and the loading amount or pattern of the coated portion 150. It may have a different shape depending on the shape of the electrode 100, and the degree of pressure and friction applied to the uncoated portion 110 may be appropriately controlled according to the shape of the electrode 100.
- first pressure roll 1100 and the second pressure roll 1200 may each be made of a material considering the position of the uncoated portion 110 and the loading amount or pattern of the coated portion 150.
- first pressure roll 1100 and the second pressure roll 1200 may each be made of one or more materials selected from the group consisting of metal, plastic, rubber, and silicon.
- the rubber may be nitrile rubber (HNBR), hydrogenated nitrile rubber (HNBR), and the like
- the silicone may be RTV silicone (room-temperature-vulcanizing silicone).
- HNBR nitrile rubber
- HNBR hydrogenated nitrile rubber
- silicone room-temperature-vulcanizing silicone
- the first pressure roll 1100 and the second pressure roll 1200 are configured such as the position of the uncoated portion 110 and the loading amount or pattern of the coated portion 150. It may have different materials depending on the shape of the electrode 100, and the degree of pressure and friction applied to the uncoated portion 110 may be appropriately controlled.
- An electrode according to another embodiment of the present invention may be manufactured by the electrode manufacturing apparatus according to the above.
- a plurality of electrodes may be stacked to form an electrode stack, and the electrode stack may be mounted in a battery case.
- An electrode manufacturing apparatus in which a difference (d1) between the radius of the first pressure roll 1100 and the radius of the second pressure roll 1200 was 50 um was manufactured.
- An electrode manufacturing apparatus in which a difference (d1) between the radius of the first pressure roll 1100 and the radius of the second pressure roll 1200 was 400 um was manufactured.
- An electrode manufacturing apparatus in which the difference (d1) between the radius of the first pressure roll 1100 and the radius of the second pressure roll 1200 was 2000 um was manufactured.
- the negative electrode including the coated portion in which the negative electrode active material layer was formed on the negative electrode current collector and the uncoated portion in which the negative electrode active material layer was not formed on the negative electrode current collector was pressed with the electrode manufacturing apparatus of Examples 1 to 3. The results are shown in FIG. 5 .
- the uncoated portion 150 pressed by the electrode manufacturing apparatus of Comparative Example 1 has wrinkles.
- the uncoated portion 150 pressurized by the electrode manufacturing apparatus of Comparative Example 2 has a swell.
- the degree of wrinkles in Comparative Example 2 is deepened compared to Comparative Example 1. Unlike this, it can be confirmed that wrinkles are removed from the uncoated portion 150 pressed by the electrode manufacturing apparatus of Example 1.
- the first pressure roll 1100 and the second pressure roll 1200 have the radius of the first pressure roll 1100 as in the electrode manufacturing apparatus of Example 1 and In the case of having a difference (d1) in the radii of the second pressure rolls 1200, it can be confirmed that the wrinkles of the uncoated portion 150 are effectively removed.
- the positive electrode including the coated portion in which the positive electrode active material layer was formed and the uncoated portion in which the positive electrode active material layer was not formed on the positive electrode current collector was pressed with the electrode manufacturing apparatus of Comparative Example 1 and Example 1. The results are shown in FIG. 6 .
- the first pressure roll 1100 and the second pressure roll 1200 have the same radius and In the case of having a difference (d1) in the radii of the second pressure rolls 1200, it can be confirmed that the wrinkles of the uncoated portion 150 are effectively removed.
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
Description
Claims (12)
- 코팅부와 미코팅부를 포함하는 전극에 압력을 가하는 전극 제조 장치로서,상기 미코팅부에 압력을 가하는 제1 가압롤;상기 코팅부에 압력을 가하는 제2 가압롤; 및상기 제1 가압롤의 중심과 상기 제2 가압롤의 중심을 각각 관통하는 연결부를 포함하고,상기 제1 가압롤의 반지름과 상기 제2 가압롤의 반지름의 차이는 상기 코팅부와 상기 미코팅부 사이의 단차와 동일하거나 이보다 작은 전극 제조 장치.
- 제1항에서,상기 제1 가압롤의 반지름과 상기 제2 가압롤의 반지름의 차이는 50um 초과 내지 2000um 미만인 전극 제조 장치.
- 제1항에서,상기 제1 가압롤은 상기 코팅부의 단부를 따라 연장되어 있고,상기 제1 가압롤은 상기 미코팅부 및 상기 코팅부의 단부에 압력을 가하는 전극 제조 장치.
- 제3항에서,상기 코팅부의 단부는 상기 미코팅부를 향하는 방향으로 두께가 감소하는 제1 슬라이딩부를 포함하고,상기 제1 가압롤은 상기 제1 슬라이딩부와 접하는 제2 슬라이딩부를 포함하는 전극 제조 장치.
- 제4항에서,상기 제2 슬라이딩부의 두께는 상기 제1 슬라이딩부의 두께와 동일하거나 이보다 작은 전극 제조 장치.
- 제5항에서,상기 제2 슬라이딩부의 두께는 50um 초과 2000um 미만인 전극 제조 장치.
- 제1항에서,상기 제1 가압롤과 상기 제2 가압롤이 서로 접하는 전극 제조 장치.
- 제7항에서,상기 제1 가압롤의 외면 중 상기 제2 가압롤이 접하는 면과 상기 제2 가압롤의 외면 중 상기 제1 가압롤이 접하는 면은 각각 코팅되어 있는 전극 제조 장치.
- 제7항에서,상기 제1 가압롤의 외면 전체와 상기 제2 가압롤의 외면 전체는 각각 코팅되어 있는 전극 제조 장치.
- 제7항에서,상기 제1 가압롤과 상기 제2 가압롤을 각각 관통하는 적어도 하나의 고정부를 더 포함하고,상기 고정부는 상기 연결부와 이격되어 있는 전극 제조 장치.
- 제1항에서,상기 제1 가압롤 및 상기 제2 가압롤은 각각 금속, 플라스틱, 고무, 및 실리콘으로 이루어진 군에서 선택된 1종 이상의 소재로 이루어지는 전극 제조 장치.
- 제1항에 따른 전극 제조 장치로 제조된 전극.
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JP2023550669A JP2024508283A (ja) | 2021-12-06 | 2022-10-06 | 電極製造装置 |
CN202280017168.6A CN116941055A (zh) | 2021-12-06 | 2022-10-06 | 电极制造装置 |
US18/281,490 US20240170636A1 (en) | 2021-12-06 | 2022-10-06 | Electrode Manufacturing Device |
EP22904419.3A EP4290598A1 (en) | 2021-12-06 | 2022-10-06 | Apparatus for manufacturing electrode |
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Citations (5)
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JP2000251942A (ja) * | 1999-03-01 | 2000-09-14 | Matsushita Battery Industrial Co Ltd | 非水電解液二次電池の製造方法 |
KR20100120239A (ko) * | 2008-09-26 | 2010-11-12 | 파나소닉 주식회사 | 전지용 극판의 제조방법 |
JP2013165036A (ja) * | 2012-02-13 | 2013-08-22 | Nissan Motor Co Ltd | 電池押圧装置および電池押圧方法 |
KR20180081310A (ko) * | 2017-01-06 | 2018-07-16 | 주식회사 엘지화학 | 단차를 가지는 전극 시트 제조용 압연 롤러 및 이를 포함하는 압연 장치 |
JP2018156839A (ja) * | 2017-03-17 | 2018-10-04 | 三洋電機株式会社 | 電極板の製造方法及び二次電池の製造方法 |
-
2021
- 2021-12-06 KR KR1020210172789A patent/KR20230084756A/ko unknown
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2022
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- 2022-10-06 JP JP2023550669A patent/JP2024508283A/ja active Pending
- 2022-10-06 CN CN202280017168.6A patent/CN116941055A/zh active Pending
- 2022-10-06 WO PCT/KR2022/015047 patent/WO2023106585A1/ko active Application Filing
- 2022-10-06 US US18/281,490 patent/US20240170636A1/en active Pending
Patent Citations (5)
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JP2000251942A (ja) * | 1999-03-01 | 2000-09-14 | Matsushita Battery Industrial Co Ltd | 非水電解液二次電池の製造方法 |
KR20100120239A (ko) * | 2008-09-26 | 2010-11-12 | 파나소닉 주식회사 | 전지용 극판의 제조방법 |
JP2013165036A (ja) * | 2012-02-13 | 2013-08-22 | Nissan Motor Co Ltd | 電池押圧装置および電池押圧方法 |
KR20180081310A (ko) * | 2017-01-06 | 2018-07-16 | 주식회사 엘지화학 | 단차를 가지는 전극 시트 제조용 압연 롤러 및 이를 포함하는 압연 장치 |
JP2018156839A (ja) * | 2017-03-17 | 2018-10-04 | 三洋電機株式会社 | 電極板の製造方法及び二次電池の製造方法 |
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EP4290598A1 (en) | 2023-12-13 |
US20240170636A1 (en) | 2024-05-23 |
JP2024508283A (ja) | 2024-02-26 |
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