WO2023085676A1 - 전극 슬러리 제어 장치 - Google Patents
전극 슬러리 제어 장치 Download PDFInfo
- Publication number
- WO2023085676A1 WO2023085676A1 PCT/KR2022/016939 KR2022016939W WO2023085676A1 WO 2023085676 A1 WO2023085676 A1 WO 2023085676A1 KR 2022016939 W KR2022016939 W KR 2022016939W WO 2023085676 A1 WO2023085676 A1 WO 2023085676A1
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- WO
- WIPO (PCT)
- Prior art keywords
- opening
- closing member
- connection pipe
- pipe
- electrode slurry
- Prior art date
Links
- 239000011267 electrode slurry Substances 0.000 title claims abstract description 80
- 238000000576 coating method Methods 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 38
- 238000003860 storage Methods 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000000758 substrate Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 abstract description 6
- 230000004308 accommodation Effects 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 50
- 230000008859 change Effects 0.000 description 34
- 230000002441 reversible effect Effects 0.000 description 13
- 238000009826 distribution Methods 0.000 description 11
- 238000005206 flow analysis Methods 0.000 description 11
- 230000002829 reductive effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 6
- 239000007769 metal material Substances 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 229910006020 NiCoAl Inorganic materials 0.000 description 1
- 229910006025 NiCoMn Inorganic materials 0.000 description 1
- 239000011149 active material Substances 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
- 239000006256 anode slurry Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 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
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1026—Valves
- B05C11/1028—Lift valves
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/04—Arrangements for preventing erosion, not otherwise provided for
-
- 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
- H01M4/13—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
- This specification relates to an electrode slurry control device.
- lithium secondary batteries such as lithium ion batteries and lithium ion polymer batteries, which have advantages such as high energy density, discharge voltage, and output stability.
- a secondary battery has a structure including an electrode assembly having a stacked structure of a positive electrode, a negative electrode, and a separator positioned between the positive electrode and the negative electrode.
- the positive and negative electrodes are prepared by coating a slurry containing an active material on a substrate.
- the slurry is supplied from the ink reservoir and moved to a coating device to be coated on a substrate.
- a coating device to be coated on a substrate.
- the supply can be continued, and when a pattern needs to be formed through the replacement of the substrate or the applied part and the uncoated part on the parasitic phase, it can be supplied intermittently.
- the present specification is intended to provide an electrode slurry control device.
- An exemplary embodiment of the present specification includes a main body provided with a receiving port for receiving electrode slurry from an external storage unit; A coating unit for discharging an electrode slurry onto a substrate; a supply pipe configured to supply the electrode slurry in the main body to the coating unit and connected to the main body through a first connection pipe having a first opening/closing member; a first circulation pipe configured to move a portion of the electrode slurry flowing into the main body to the storage unit and connected to the main body through a second connection pipe having a second opening and closing member; And a second circulation pipe configured to move a part of the electrode slurry in the main body to the storage unit and connected to the main body through a third connection pipe equipped with a third opening and closing member,
- the average inner circumferential diameter of the second connection pipe is formed smaller than the average inner circumferential diameter of the first circulation pipe, and the average inner circumferential diameter of the third connection pipe is greater than the average inner circumferential diameter of the second connection pipe.
- Electrode slurry control device is provided.
- the second opening and closing member when the first opening and closing member closes the first connection pipe, the second opening and closing member opens the second connection pipe, or the third opening and closing member closes the third connection pipe.
- the second opening and closing member and the third opening and closing member open the second connection pipe and the third connection pipe, respectively, and the first opening and closing member opens the first connection pipe, the second opening and closing member opens and closes the second connection pipe.
- the member and the third opening/closing member are configured to close the second connecting pipe and the third connecting pipe, respectively.
- the average inner circumferential diameter of the first connection pipe is smaller than the average inner circumferential diameter of the supply pipe, and the first opening and closing member has a conical shape, and the side surface of the cone facing the first connection pipe is formed. The diameter gradually decreases toward the first connecting tube side, and the cone angle is 110 degrees to 150 degrees.
- the second opening and closing member has a conical shape, the diameter of the side surface of the cone facing the second connection pipe gradually decreases toward the second connection pipe, and the cone angle is 110 degrees to 150 degrees.
- the third opening and closing member is a ball valve having a through hole, and the average diameter of the inner circumferential surface of the third connection pipe is the average diameter of the through hole.
- the first circulation pipe and the second circulation pipe are connected so that the electrode slurry moving to the main body through the first circulation pipe and the electrode slurry moving to the main body through the second circulation pipe join. It further includes a connected confluence tube.
- the electrode slurry control device can reduce the shear stress of the supplied electrode slurry.
- the electrode slurry control device can uniformly control the loading amount of the supplied electrode slurry.
- FIG. 1 is a cycle diagram of a conventional electrode slurry control device.
- FIG. 2 is a perspective view of an electrode slurry control device according to an exemplary embodiment of the present specification.
- FIG 3 is a cross-sectional view when the electrode slurry control device according to an exemplary embodiment of the present specification applies electrode slurry on a substrate.
- FIG. 4 is a cycle diagram when the electrode slurry control device according to an exemplary embodiment of the present specification does not apply electrode slurry on a substrate for a long period of time.
- FIG 5 is a cycle diagram when the electrode slurry control device according to an exemplary embodiment of the present specification does not instantaneously apply electrode slurry on a substrate during intermittent coating (pattern coating).
- FIG. 6 is a cycle diagram when the electrode slurry control device according to another embodiment of the present specification does not apply electrode slurry on a substrate for a long period of time.
- FIG. 7(a) is a case in which the cone valve is provided as an opening/closing member in the normal position of the cone valve in the electrode slurry control device according to an exemplary embodiment of the present specification
- FIG. 7(b) is a case in which the cone valve is provided in the reverse position.
- Figure 8 (a) shows the change in flow rate in the connecting pipe provided with a cone valve provided in the correct position and having a cone angle of 90 degrees
- Figure 8 (b) is a connection provided with a cone valve provided in the correct position and having a cone angle of 120 degrees. is the flow rate change in the tube.
- Figure 9 (a) is the shear stress change in the connecting pipe provided with a cone valve provided in the correct position and having a cone angle of 90 degrees
- Figure 9 (b) is provided with a cone valve provided in the correct position and having a cone angle of 120 degrees is the shear stress change in the connector.
- Figure 10 (a) is the pressure change in the connecting pipe provided with a cone valve provided in the correct position and having a cone angle of 90 degrees
- Figure 10 (b) is a connection provided with a cone valve provided in the correct position and having a cone angle of 120 degrees. is the pressure change in the tube.
- Figure 11 (a) shows the change in flow velocity in a connecting pipe provided with a cone valve provided in a reverse position and having a cone angle of 90 degrees
- Figure 11 (b) is a connection provided with a cone valve provided in a reverse position and having a cone angle of 120 degrees. is the flow rate change in the tube.
- Figure 12 (a) is the shear stress change in the connecting pipe provided with a cone valve provided in the reverse position and the cone angle of 90 degrees
- Figure 12 (b) is provided with a cone valve provided in the reverse position and cone angle of 120 degrees is the shear stress change in the connector.
- FIG. 13(a) is a pressure change in a connecting pipe provided with a cone valve provided in a reverse position and having a cone angle of 90 degrees
- FIG. 13(b) is a connection provided with a cone valve provided in a reverse position and having a cone angle of 120 degrees. is the pressure change in the tube.
- FIG. 14 is a change in flow rate of slurry in the conventional electrode slurry control device of FIG. 1 when the first opening/closing member is closed and the second opening/closing member is open during a disposition during a coating interruption period.
- FIG. 15 is a change in shear stress applied to the slurry in the conventional electrode slurry control device of FIG. 1 when the first opening and closing member is closed and the second opening and closing member is open during a coating interruption period.
- FIG. 16 is a change in static pressure of the slurry in the conventional electrode slurry control device of FIG. 1 when the first opening/closing member is closed and the second opening/closing member is open during a disposition during a coating interruption period.
- FIG. 17 is a flow rate change of slurry in the novel slurry control device of FIG. 6 when the first opening and closing member is closed and the second and third opening and closing members are open during a long-term coating suspension period.
- FIG. 18 is a change in shear stress of the slurry in the novel slurry control device of FIG. 6 when the first opening and closing member is closed and the second opening and closing member and the third opening and closing member are open during an extended coating suspension period. .
- FIG. 19 is a change in static pressure of the slurry in the novel slurry control device of FIG. 6 when the first opening and closing member is closed and the second and third opening and closing members are open during a long-term coating suspension period.
- FIG. 2 is a perspective view of an electrode slurry control device 100 according to an exemplary embodiment of the present specification
- FIG. 3 is a cross-sectional view of the electrode slurry control device 100 according to an exemplary embodiment of the present specification.
- the electrode slurry control device 100 includes a main body 10, a supply pipe 20, a first circulation pipe 30 and a second circulation pipe 40.
- a receiving port 11 formed to receive the electrode slurry from a storage unit (not shown) in which the electrode slurry is stored is formed at its end.
- the first connector 22 connected to the first opening 12 of the main body 10 is opened and closed by the first opening and closing member 21 and discharges the electrode slurry in the main body 10 onto the substrate Coating It is supplied through the supply pipe 20 as a part.
- the second connection pipe 32 connected to the second opening 13 of the main body 10 is opened and closed by the second opening and closing member 31, and when opened, the electrode slurry in the main body 10 passes through the first circulation pipe 30. through to the storage unit.
- the third connection pipe 42 connected to the third opening 14 of the main body 10 is opened and closed by the third opening and closing member 41, and when opened, the electrode slurry in the main body 10 passes through the second circulation pipe 40. through to the storage unit.
- a supply pipe 20 coupled to a coating unit (not shown) for coating a substrate is formed,
- a first circulation pipe 30 connected to the storage unit and circulating the electrode slurry back to the external storage unit is formed in the second opening 13 of the main body 10 .
- the body 10, the supply pipe 20, and the first circulation pipe 30 may each be formed in a cylindrical tube shape, and each average diameter and shape can be freely designed according to the needs of the designer, so Change is possible.
- the substrate is not particularly limited as long as it can coat the electrode, but the substrate may be a current collector, specifically, a metal foil, and may be a foil made of copper, aluminum, or a combination thereof.
- the electrode slurry applied by the coating unit may include an electrode active material, a binder, and a solvent.
- the electrode active material is not particularly limited as long as it is used for a positive electrode or a negative electrode of a battery, but in the case of a positive electrode, LCO (LiCoO 2 ), NCM (Li(NiCoMn)O 2 ), NCA (Li(NiCoAl)O 2 ), LMO ( LiMn 2 O), LFP (LiFePO 4 ), and the like, and in the case of a negative electrode, it may be Carbon (graphite).
- LCO LiCoO 2
- NCM Li(NiCoMn)O 2
- NCA Li(NiCoAl)O 2
- LMO LiMn 2 O
- LFP LiFePO 4
- the binder is not particularly limited as long as it can aggregate the electrode active material, and may be selected from binders used in the art.
- the solvent is not particularly limited as long as it can impart fluidity to the electrode slurry, but may be water, N-methyl pyrrolidone, or the like.
- the supply pipe 20 is connected to the main body 10 through a first connection pipe 22 . Therefore, the first connection pipe 22 is located between the supply pipe 20 and the main body 10, and the average inner circumferential diameter r1 of the first connection pipe 22 is the average inner circumferential diameter R1 of the supply pipe 20 formed smaller.
- the average diameter of the outer circumference of the first connection pipe 22 may be formed equal to the average diameter of the outer circumference of the supply pipe 20 for convenience and stability of coupling between the first connection pipe 22 and the supply pipe 20. there is.
- the first connection pipe 22 may be formed of a metal material having a certain rigidity, and any material may be used as long as it can withstand the pressure caused by the supply of the electrode slurry.
- the first circulation pipe 30 is connected to the main body 10 through the second connection pipe 32 . Therefore, the second connection pipe 32 is located between the first circulation pipe 30 and the main body 10, and the average inner circumferential diameter r2 of the second connection pipe 32 is that of the first circulation pipe 30.
- the inner circumferential surface is formed smaller than the average diameter R2.
- the average outer circumferential diameter of the first circulation pipe 30 is the average diameter of the outer circumferential surface of the first circulation pipe 30 for convenience and stability of coupling between the second connection pipe 32 and the first circulation pipe 30. can be formed in the same way as
- the second connection pipe 32 may be formed of a metal material having a certain rigidity, and any material may be used as long as it can withstand the pressure caused by the supply of the electrode slurry.
- the second circulation pipe 40 is connected to the main body 10 through a third connection pipe 42 . Therefore, the third connection pipe 42 is located between the supply pipe 20 and the body 10.
- the second circulation pipe 40 includes a third opening/closing member 41, and an average inner circumferential diameter of the third connecting pipe 42 is an average diameter of a hole opened by the third opening/closing member 41.
- the third opening/closing member 41 may be a ball valve having a through hole
- the average diameter r3 of the inner circumferential surface of the third connection pipe 42 may be the average diameter r3 of the through hole.
- the average inner circumferential diameter r3 of the third connection pipe 42 is smaller than or equal to the average inner circumferential diameter R3 of the second circulation pipe 40 .
- the average outer circumferential diameter of the third connection pipe 42 is the average outer circumferential diameter of the second circulation pipe 40 for convenience and stability of coupling between the third connection pipe 42 and the second circulation pipe 40.
- the average diameter of the end of the third connection pipe 42 coupled to the second circulation pipe 40 is the average outer circumference of the second circulation pipe 40.
- the average diameter of the outer circumferential surface of the portion provided with the third opening and closing member 41 may be greater than the average diameter of the outer circumferential surface of the second circulation pipe 40 .
- the third connection pipe 42 may be formed of a metal material having a certain rigidity, and any material may be used as long as it can withstand the pressure caused by the supply of the electrode slurry.
- a first opening/closing member 21 formed to open and close the first connection pipe 22 is formed inside the supply pipe 20, and inside the first circulation pipe 30 to open and close the second connection pipe 32.
- a second opening and closing member 31 is formed.
- the second opening and closing member 31 may be formed in the same shape as the first opening and closing member 21, and the second opening and closing member 31 may have a different size and average diameter than the first opening and closing member 21, but Since the first opening/closing member 21 can open and close the second connector 32 on the same principle as the principle of opening and closing the first connector 22, duplicate descriptions will be omitted.
- the first opening/closing member 21 has a conical side surface 23 facing the first connection pipe 22, and is formed by the conical side surface 23 facing the first connection pipe 22, in detail. If the cone to be is called a first cone, a second cone side surface 24 positioned to correspond to the opposite side of the first cone may be formed.
- the first opening and closing member 21 has a conical shape in which the diameter of the conical side surface 23 facing the first connection pipe 22 gradually decreases outward, and may be a cone valve.
- the conical side surface 23 and the second conical side surface 24 each have a conical shape whose diameter gradually decreases outward.
- the side face of the cone means a curved surface connecting the vertex of the cone shape and the circle of the base.
- the first opening and closing member 21 has a conical shape or a shape in which the bottom surfaces of two identical cones are joined.
- the conical shape of the side surface 23 of the cone and the shape of the conical shape of the side surface 24 of the second cone have a mutually symmetrical structure.
- the second conical side surface 24 of the first opening and closing member 21 may be formed sharp in a conical shape, or the vertex may be rounded.
- the circular angle of the first opening and closing member 21 may be 110 degrees to 150 degrees. Specifically, it may be 110 degrees to 140 degrees, 110 degrees to 130 degrees, or 115 degrees to 125 degrees. Preferably, the circular angle of the first opening and closing member 21 may be 120 degrees.
- the pressure of the electrode slurry applied to the first opening and closing member 21 is reduced to prevent malfunction, It is possible to minimize the amount of electrode slurry being pushed up the side surface 24 of the second cone, and it is possible to prevent a region having a large coating amount locally in the initial stage of coating.
- the first opening/closing member 21 may be formed by bonding the bottom surfaces of two identical cones, or may be manufactured in a shape in which the bottom surfaces of the same two cones are joined from the beginning without bonding.
- the first opening and closing member 21 may be formed in a shape in which two cones having different average diameters are selectively combined according to the type, viscosity, and other characteristics of the electrode slurry.
- the material of the first opening and closing member 21 has no permeability so as to completely block the electrode slurry flowing into the supply pipe 20 through the first connection pipe 22, and may be formed to have a certain rigidity. More specifically, it may be made of a metal material, but is not limited thereto.
- first opening and closing member 21 further includes a first connecting member 25 connected to the driving unit (not shown), and the second opening and closing member 31 is a second connecting member connected to the driving unit (not shown). (26) is further included.
- the first connecting member 25 and the second connecting member 26 each have a bar shape, and as power is transmitted to the first connecting member 25 and the second connecting member 26 by the driving unit, The first opening and closing member 21 and the second opening and closing member 31 may be moved.
- the first connecting member 25 and the second connecting member 26 are formed to have rigidity enough to withstand the pressure caused by the electrode slurry formed inside the main body 10, and in detail, made of a metal material. can be formed
- the thicknesses of the first connection member 25 and the second connection member 26 may be formed to be very small compared to the average diameters of inner peripheral surfaces of the first connection pipe 22 and the second connection pipe 32 . This is to prevent the first connection member 25 and the second connection member 26 from occupying a lot of volume inside the first connection pipe 22 and the second connection pipe 32, and at the same time, the first connection member ( 25) and the second connecting member 26 to minimize the influence on the movement of the electrode slurry.
- FIG. 3 is an operating state diagram showing a state in which the supply pipe 20 of the electrode slurry control device is opened and the first circulation pipe 30 and the second circulation pipe 40 are closed
- FIG. 4 shows an electrode slurry control An operating state diagram showing a state in which the supply pipe 20 and the first circulation pipe 30 of the device are closed and the second circulation pipe 40 is opened is shown
- FIG. 5 the supply pipe 20 of the electrode slurry control device and an operating state diagram showing a state in which the second circulation pipe 40 is closed and the first circulation pipe 30 is opened.
- FIG. 6 the supply pipe 20 of the electrode slurry control device is closed, and the first An operating state diagram showing a state in which the second circulation pipe 40 is opened together with the circulation pipe 30 is shown.
- the first opening and closing member 21 is formed to open and close the first connection pipe 22 by the first connecting member 25 connected to the driving unit (not shown),
- the second opening/closing member 31 is formed to open and close the second connection pipe 32 by the connecting member 26 .
- the third opening/closing member 41 is a ball valve having a through hole 44, and a ball 43 having a through hole 44 is provided in the third connection pipe 42 and the outside of the ball 43.
- the ball 43 can be rotated by the valve 45 coupled to the surface. As shown in FIGS. 4 and 6, when the through hole 44 is positioned so as to be connected to the second circulation pipe 40 by the rotation of the ball 43, it is opened, and as shown in FIGS. 3 and 5 , If the through hole 44 is not connected to the second circulation pipe 40 by the rotation of the ball, it is closed.
- the second opening and closing member 31 opens at least one of the second connection pipe 32 and the third connection pipe 41.
- the first opening/closing member 21 opens the first connecting pipe 22
- the second opening/closing member 31 closes the second connecting pipe 32
- the third opening/closing member 41 opens the first connecting pipe 22. 3 It is configured to close the connecting pipe 42.
- the conical side surface 23 of the first opening/closing member 21 is in close contact with and drawn in to the first connector 22, and is drawn in in close contact with the first connecting pipe 22.
- the connecting pipe 22 is closed. In this way, the position of the first opening/closing member 21 when the movement of the electrode slurry to the supply pipe 20 is blocked may be defined as the “first position”.
- the conical side surface 23 of the first opening/closing member 21 is completely pulled out from the first connection pipe 22, and in this way, the first connection pipe 22 is opened so that the electrode slurry A position of the first opening/closing member 21 when it is movable through the supply pipe 20 may be defined as a “second position”.
- the second opening and closing member 31 is pulled in so as to come into close contact with the second connection pipe 32, and the second connection pipe 32 is closed.
- the position may be defined as a “third position”, and as shown in FIGS. 5 and 6, the second opening and closing member 31 is completely pulled out of the second connection pipe 32 and the second connection pipe 32 is opened.
- a position of the second opening/closing member 31 in the closed state may be defined as a “fourth position”.
- the first position of the first opening and closing member 21 corresponds to the third position of the second opening and closing member 31
- the second position of the first opening and closing member 21 corresponds to the third position of the second opening and closing member 31. It can correspond to 4 positions.
- the third opening and closing member 41 is pulled in so as to come into close contact with the third connection pipe 42, and the third connection pipe 42 is closed.
- the position may be defined as a “fifth position”, and as shown in FIGS. 4 and 6, the third opening and closing member 41 is rotated and the third connection pipe 42 is opened.
- the position of (41) can be defined as "the sixth position”.
- the first opening and closing member 21 moves toward the first connector 22 side, and then the conical side surface of the first opening and closing member 21 ( 23) is located in the first position drawn into the first connection pipe 22, and the second opening and closing member 31 moves toward the opposite side of the second connection pipe 32, and then the second opening and closing member 31
- the conical side face (23) of the is located in the fourth position fully withdrawn from the second connector (32).
- the third opening and closing member 41 may be located in a fifth position in a closed state as shown in FIG. 5 or in a sixth position in an open state as shown in FIG. 6 .
- the second and third connector pipes 42 are formed in a completely closed state (third position and fifth position), At this time, a coating portion is formed on the substrate.
- the first connector 22 is in a completely closed state (first position)
- the second connector 32 is formed in a completely open state (fourth position)
- the third connector 42 is an selectively passed state. At this time, an uncoated portion may be formed on the substrate.
- first opening and closing member 21 and the second opening and closing member 31 reciprocate and move in opposite directions at high speed, and the coated portion and the uncoated portion on the substrate are intermittently controlled only by the control of the opening and closing member without complicated control of the slurry supply pump. can be formed into
- the electrode slurry control device 100 has a first circulation pipe 30 in addition to the supply pipe 20 so that the electrode slurry continues to circulate through the main body 10 even when an uncoated portion is formed on the substrate, thereby supplying the slurry Even if the operation of the pump is not stopped, the pressure applied to the main body 10 can be reduced.
- the properties of the electrode slurry passing through the second connector 32 may change and adversely affect the electrode coating quality. This is due to the shapes of the second opening/closing member 31 and the second connecting pipe 32 that apply a large shear stress to the slurry.
- Shear stress is an essential factor in dispersing the slurry in the mixing process, which is a step before the coating process. However, after the slurry is completed through the mixing process, it is necessary to minimize the shear stress. If additional unintended shear forces occur after the mixing process, two problems may occur.
- the viscosity (viscosity curve) of the slurry changes.
- the viscosity gradient in the viscosity curve affects the interface shape of the slurry applied to the substrate. If the coating interface is not managed, the proper ratio of the positive and negative electrodes in the finished lithium-ion battery may be broken, resulting in a fire due to lithium precipitation.
- An object of the present invention is to add a second circulation pipe 40 to prevent the above problem, so that the slurry avoids the second opening and closing member 31 and the second connection pipe 32 that apply a large shear stress to the slurry. and to further improve the shapes of the first opening/closing member 21, the first connecting pipe 22, the second opening/closing member 31, and the second connecting pipe 32 to minimize shear stress.
- the third connection pipe 42 is changed to a completely open state (the sixth position). Due to this, the slurry avoids the second opening/closing member 31 and the second connection pipe 32 and receives less shear stress, thereby preventing a change in physical properties.
- the third connection pipe 42 can be opened by opening the third opening and closing member 41, but the first opening and closing member 21 and the second opening and closing member 21 can be opened and closed at high speed during intermittent (pattern coating).
- the slurry should be controlled only by the member 31 and the third connection pipe 42 should be closed. Therefore, when the coating is momentarily stopped during intermittent coating, the slurry must inevitably pass through the second opening and closing member 31 and the second connection pipe 32, and when the coating proceeds, the slurry passes through the first opening and closing member 21 and the first connection pipe 22 must pass inevitably.
- the present invention minimizes the shear stress received by the slurry by making the cone angle of the corresponding opening and closing member 110 to 150 degrees to prevent the change in physical properties of the slurry.
- Flow analysis was performed to verify the effect of the present invention in minimizing the shear stress received by the slurry by making the cone angle of the opening and closing subtitles 110 to 150 degrees.
- the conventional 90 degree conical opening and closing member and the 120 degree opening and closing member of the present invention were compared and analyzed.
- the specific flow analysis method is as follows.
- As the working fluid one of the anode slurries used in LG Energy Solutions cylindrical batteries was used.
- the viscosity curve of the slurry was obtained by actually measuring it with a viscometer, and then curve fitting with the Carreau-Yasuda model was input into the flow analysis program. Parameters such as slurry density and flow rate, valve size and stroke (valve opening degree) were also selected to reflect the actual coating process well.
- the analysis was conducted in a steady state and a turbulent flow model was used.
- the analysis tool used was Siemens' STAR-CCM+. The results are shown in Figures 8 and 11.
- Figure 8 (a) shows the change in flow rate in the connecting pipe provided with a cone valve provided in the correct position and having a cone angle of 90 degrees
- Figure 8 (b) is a connection provided with a cone valve provided in the correct position and having a cone angle of 120 degrees. is the flow rate change in the tube.
- Figure 11 (a) shows the change in flow velocity in a connecting pipe provided with a cone valve provided in a reverse position and having a cone angle of 90 degrees
- Figure 11 (b) is a connection provided with a cone valve provided in a reverse position and having a cone angle of 120 degrees. is the flow rate change in the tube.
- FIG. 9 (a) is a shear stress change in a connecting pipe equipped with a cone valve provided in a normal position and having a cone angle of 90 degrees
- FIG. 9 (b) is a cone valve provided in a normal position and having a cone angle of 120 degrees.
- Figure 12 (a) is the shear stress change in the connecting pipe provided with the cone valve provided in the reverse position and the cone angle is 90 degrees
- Figure 12 (b) is the cone valve provided in the reverse position and the cone angle is 120 degrees It is the shear stress change in the provided connector.
- FIG. 10 (a) is a pressure change in a connecting pipe provided with a cone valve provided in a normal position and having a cone angle of 90 degrees
- FIG. 10 (b) is a cone valve provided in a normal position and having a cone angle of 120 degrees. It is the pressure change in the provided connection pipe.
- FIG. 13 (a) is a pressure change in a connecting pipe provided with a cone valve provided in a reverse position and having a cone angle of 90 degrees
- FIG. 13 (b) is provided with a cone valve provided in a reverse position and having a cone angle of 120 degrees. is the pressure change in the connected pipe.
- This experiment shows the effect of the existing piping system, in which the second circulation pipe 40 and the third opening and closing member 41 are not installed, on the slurry through flow analysis.
- As the opening and closing member a conventional 90-degree cone angle valve was used.
- the analysis region is a piping system in which the first opening/closing member 21 is closed and the second opening/closing member 31 is open (coating interruption period). Except for the analysis area, the rest of the flow analysis method is the same as in Experimental Example 1.
- the results are shown in FIGS. 14, 15 and 16. 14, 15 and 16 show flow velocity distribution, shear stress distribution, and static pressure distribution, respectively.
- the contour graph of FIG. 14 shows that a large flow rate occurs near the second opening and closing member during the coating interruption period.
- 15 shows that a large shear stress is generated in the vicinity of the second opening and closing member.
- 16 shows that the second opening and closing member causes most of the pressure loss.
- This experiment shows the effect of the slurry control device having the second circulation pipe 40 and the third opening and closing member 41 on the slurry through flow analysis.
- it is a piping system in which the first opening and closing member 21 is closed and the second opening and closing member 31 is open (coating interruption period).
- the second circulation pipe 40 is added and the third opening/closing member 41 is open so that the slurry can avoid the second opening/closing member 31.
- the rest of the flow analysis method is the same as in Experimental Example 4.
- the analysis results are shown in Figs. 17, 18 and 19. 17, 18 and 19 show flow velocity distribution, shear stress distribution, and static pressure distribution, respectively.
- FIG. 17 shows that most of the slurry flows through the second circulation pipe 40 and bypasses the second opening and closing member 31 .
- FIG. 18 shows that shear stress is reduced in the vicinity of the second opening and closing member when compared to FIG. 15 .
- FIG. 19 shows that the pressure loss is significantly reduced (28.22 kPa ⁇ 12.01 kPa) compared to FIG. 16.
- the slurry control device having the second circulation pipe 40 and the third opening and closing member 41 reduces the shear stress applied to the slurry and lowers the pressure loss of the piping system.
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Abstract
Description
Claims (6)
- 외부의 저장부에서 전극 슬러리를 공급받는 수용구가 구비되어 있는 본체;기재 상으로 전극 슬러리를 토출하는 코팅부;상기 본체 내의 전극 슬러리를 상기 코팅부로 공급시키도록 구성되고, 제1 개폐 부재가 구비된 제1 연결관을 통해 상기 본체에 연결되는 공급관;상기 본체로 유입된 전극 슬러리의 일부를 상기 저장부로 이동시키도록 구성되고, 제2 개폐 부재가 구비된 제2 연결관을 통해 상기 본체에 연결되는 제1 순환관; 및상기 본체 내의 전극 슬러리의 일부를 상기 저장부로 이동시키도록 구성되고, 제3 개폐 부재가 구비된 제3 연결관을 통해 상기 본체에 연결되는 제2 순환관을 포함하며,상기 제2 연결관의 내주면 평균직경은, 상기 제1 순환관의 내주면 평균직경보다 작게 형성되고,상기 제3 연결관의 내주면 평균직경은 상기 제2 연결관의 내주면 평균직경보다 큰 것인 전극 슬러리 제어 장치.
- 청구항 1에 있어서, 상기 제1 개폐 부재가 상기 제1 연결관을 폐쇄할 때상기 제2 개폐 부재가 상기 제2 연결관을 개방하거나, 상기 제3 개폐 부재가 상기 제3 연결관을 개방하거나, 상기 제2 개폐 부재 및 상기 제3 개폐 부재가 각각 상기 제2 연결관 및 상기 제3 연결관을 개방시키고,상기 제1 개폐 부재가 상기 제1 연결관을 개방할 때 상기 제2 개폐 부재 및 상기 제3 개폐 부재는 각각 상기 제2 연결관 및 상기 제3 연결관을 폐쇄시키도록 구성되는 것인 전극 슬러리 제어 장치.
- 청구항 1에 있어서, 상기 제1 연결관의 내주면 평균직경은, 상기 공급관의 내주면 평균직경보다 작게 형성되고,상기 제1 개폐 부재는 원추 형상이며, 상기 제1 연결관에 대면하는 원추 옆면의 직경이 제1 연결관 측으로 점차적으로 감소하고, 원추각이 110도 내지 150도인 것인 전극 슬러리 제어 장치.
- 청구항 1에 있어서, 상기 제2 개폐 부재는 원추 형상이며, 상기 제2 연결관에 대면하는 원추 옆면의 직경이 제2 연결관 측으로 점차적으로 감소하고, 원추각이 110도 내지 150도인 것인 전극 슬러리 제어 장치.
- 청구항 1에 있어서, 상기 제3 개폐 부재는 관통홀이 구비된 볼밸브이며,상기 제3 연결관의 내주면 평균직경은 상기 관통홀의 평균직경인 것인 전극 슬러리 제어 장치.
- 청구항 1에 있어서, 상기 제1 순환관을 통해 상기 본체로 이동하는 전극 슬러리와 상기 제2 순환관을 통해 상기 본체로 이동하는 전극 슬러리가 합류되도록, 상기 제1 순환관과 상기 제2 순환관이 연결된 합류관을 더 포함하는 전극 슬러리 제어 장치.
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CN202280008733.2A CN116670841A (zh) | 2021-11-12 | 2022-11-01 | 电极浆料控制装置 |
EP22893098.8A EP4268976A1 (en) | 2021-11-12 | 2022-11-01 | Electrode slurry control device |
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JP5606828B2 (ja) * | 2010-08-26 | 2014-10-15 | 株式会社ヒラノテクシード | 塗工装置 |
KR20170101025A (ko) * | 2016-02-26 | 2017-09-05 | 주식회사 엘지화학 | 집전체 코팅용 슬러리 제어 장치 및 이를 이용한 집전체 코팅 방법 |
JP2019093313A (ja) * | 2017-11-17 | 2019-06-20 | 東レエンジニアリング株式会社 | 間欠塗布装置 |
JP2020131145A (ja) * | 2019-02-21 | 2020-08-31 | 東レエンジニアリング株式会社 | 塗工装置及び塗工方法 |
JP2021122760A (ja) * | 2020-02-03 | 2021-08-30 | 東レエンジニアリング株式会社 | 塗工装置および塗工方法 |
KR20210155725A (ko) | 2020-06-16 | 2021-12-23 | 주식회사 엘지화학 | 방향족 탄화수소의 제조방법 |
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2022
- 2022-11-01 WO PCT/KR2022/016939 patent/WO2023085676A1/ko active Application Filing
- 2022-11-01 CN CN202280008733.2A patent/CN116670841A/zh active Pending
- 2022-11-01 EP EP22893098.8A patent/EP4268976A1/en active Pending
- 2022-11-01 JP JP2023543451A patent/JP2024504324A/ja active Pending
Patent Citations (6)
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JP5606828B2 (ja) * | 2010-08-26 | 2014-10-15 | 株式会社ヒラノテクシード | 塗工装置 |
KR20170101025A (ko) * | 2016-02-26 | 2017-09-05 | 주식회사 엘지화학 | 집전체 코팅용 슬러리 제어 장치 및 이를 이용한 집전체 코팅 방법 |
JP2019093313A (ja) * | 2017-11-17 | 2019-06-20 | 東レエンジニアリング株式会社 | 間欠塗布装置 |
JP2020131145A (ja) * | 2019-02-21 | 2020-08-31 | 東レエンジニアリング株式会社 | 塗工装置及び塗工方法 |
JP2021122760A (ja) * | 2020-02-03 | 2021-08-30 | 東レエンジニアリング株式会社 | 塗工装置および塗工方法 |
KR20210155725A (ko) | 2020-06-16 | 2021-12-23 | 주식회사 엘지화학 | 방향족 탄화수소의 제조방법 |
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EP4268976A1 (en) | 2023-11-01 |
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