WO2023085625A1 - 분리막 커팅장치 - Google Patents
분리막 커팅장치 Download PDFInfo
- Publication number
- WO2023085625A1 WO2023085625A1 PCT/KR2022/015756 KR2022015756W WO2023085625A1 WO 2023085625 A1 WO2023085625 A1 WO 2023085625A1 KR 2022015756 W KR2022015756 W KR 2022015756W WO 2023085625 A1 WO2023085625 A1 WO 2023085625A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- separator
- cutter
- holder
- cutting device
- Prior art date
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000003475 lamination Methods 0.000 claims abstract description 11
- 239000007769 metal material Substances 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 8
- 229920002530 polyetherether ketone Polymers 0.000 claims description 8
- 229920006351 engineering plastic Polymers 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- 230000007547 defect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 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
- 238000007906 compression Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
Images
Classifications
-
- 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
- H01M10/0404—Machines for assembling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
- B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
- H01M50/406—Moulding; Embossing; Cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/515—Cutting handled material
- B65H2301/5153—Details of cutting means
- B65H2301/51532—Blade cutter, e.g. single blade cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/515—Cutting handled material
- B65H2301/5153—Details of cutting means
- B65H2301/51532—Blade cutter, e.g. single blade cutter
- B65H2301/515326—Multiple blade cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/50—Machine elements
- B65H2402/54—Springs, e.g. helical or leaf springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/60—Coupling, adapter or locking means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2403/00—Power transmission; Driving means
- B65H2403/70—Clutches; Couplings
- B65H2403/73—Couplings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/18—Form of handled article or web
- B65H2701/182—Piled package
- B65H2701/1826—Arrangement of sheets
- B65H2701/18264—Pile of alternate articles of different properties, e.g. pile of working sheets with intermediate sheet between each working sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/19—Specific article or web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/72—Fuel cell 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a separator cutting device.
- the present invention relates to a separator cutting device capable of suppressing friction with surrounding metal by improving the structure of a spring unit that elastically returns a cutter that has cut a separator in a lamination process.
- the present invention relates to a separator cutting device capable of preventing the generation of foreign substances due to friction with surrounding metal by improving a spring part with a non-metallic material.
- secondary batteries are electric vehicles and hybrid electric vehicles, which are being proposed as a solution to air pollution from conventional gasoline vehicles and diesel vehicles that use fossil fuels, as well as portable devices such as cell phones, laptops, and camcorders. It is also attracting attention as an energy source.
- These secondary batteries are classified into lithium ion batteries, lithium ion polymer batteries, lithium polymer batteries, etc. according to the composition of electrodes and electrolytes, and the use of lithium ion polymer batteries, which are less likely to leak electrolyte and are easy to manufacture, is increasing.
- secondary batteries are classified into cylindrical batteries in which the electrode assembly is embedded in a cylindrical or prismatic metal can, and pouch-type batteries in which the prismatic battery and electrode assembly are embedded in a pouch-type case of an aluminum laminate sheet, depending on the shape of the battery case. .
- the electrode assembly built into the battery case is a power generating device capable of charging and discharging with a structure of a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. It is classified into a rolled jelly roll type and a stack type in which a plurality of positive and negative electrodes formed in a predetermined size are sequentially stacked with a separator interposed therebetween.
- Such a battery cell is manufactured through a notching process of notching an electrode, a lamination process of laminating the notched electrode, a separator cutting process of cutting a separator from a laminated electrode assembly, a stack process, a compression process, a packaging process, and a degas process.
- the positive electrode and the negative electrode are supplied through the positive electrode supply roll 201 and the negative electrode supply roll 203, and at this time, the positive electrode and the negative electrode are separated through the respective cutting devices 201a and 203a. is supplied
- the separator supplied through the separator supply roll 205 is interposed between the positive electrode and the negative electrode, and the positive electrode, the negative electrode and the separator are laminated through the lamination device 200, provided at the rear end of the lamination device 200 The separator is cut from the laminated electrode assembly 101 through the separator cutting device 100.
- the separator cutting device 100 is shown in FIG. 2, and includes a fixing part (not shown) to which the electrode assembly is fixed, a cutter support part 103, a cutter part 105 for cutting the separator, and cutting the separator. It includes a spring part 107 that returns one cutter part to its initial position.
- both ends of the spring part 107 are connected to the cutter support part 103 and the cutter part 105, and the cutter part 105 cutting the separator on the fixing part by the elasticity of the spring part 107 is at the initial position. It consists of a structure that returns to
- the spring part is made of SUS material, a grinding phenomenon in which the spring part is crushed or crushed occurs due to contact with the metal structure including the frame, and as a result, the foreign matter flows into the electrode assembly to cause short circuit defects and low voltage defects. There was a problem that caused it.
- Patent Document 1 Republic of Korea Patent Registration No. 10-1791297
- the present invention was made to solve the above problems, and provides a separator cutting device capable of suppressing friction with surrounding metal by improving the structure of a spring unit that elastically returns the cutter that cuts the separator in the lamination process. aims to do
- an object of the present invention is to provide a separator cutting device capable of preventing the generation of foreign substances due to friction with surrounding metal by improving the spring part with a non-metallic material.
- the present invention provides a separator cutting device for a lamination process of stacking electrode assemblies, comprising: a fixing unit for temporarily fixing the electrode assembly being transported; A cutter support part disposed on top of the fixing part; a cutter unit disposed below the cutter support unit and cutting the separator in the electrode assembly temporarily fixed to the fixing unit; and a spring unit that elastically connects the cutter support unit and the cutter unit to each other and returns the cutter unit to an initial position after cutting the separator.
- the spring unit includes a spring bush coupled to a support shaft provided in the cutter support and the cutter unit, a spring holder integrally coupled to the spring bush, and both ends coupled to the spring holder to expand and contract according to the elevation of the cutter unit It includes a spring, and the spring holder and the spring bush are made of a non-metallic material.
- the spring holder and the spring bush are integrally formed.
- the spring holder and spring bush are engineering plastics.
- the spring holder and spring bush are made of polyether ether ketone (PEEK).
- the spring holder is a helicoil type spiral holder.
- both ends of the spring are directly screwed into a helicoil type spiral holder.
- the spring holder is a hollow cylindrical member integrally connected with the spring bush, and the end of the spring is closely fixed to the inner surface of the hollow cylindrical spring holder.
- a screw thread corresponding to the helix of the spring is formed on the inner surface of the hollow cylindrical spring holder.
- the end of the spring is screwed directly onto the thread.
- the spring holder is a hollow cylindrical member integrally connected with the spring bush, a cylindrical protrusion is provided at the center of the hollow cylindrical spring holder, and formed in the inner space of the hollow cylindrical spring holder by the protrusion. The end of the spring is inserted into the annular coupling groove and fixed by pressing.
- threads corresponding to the helix of the spring are respectively formed on the inner surfaces of the two opposing inner surfaces formed by the annular coupling groove.
- the end of the spring is directly double screwed onto the thread.
- the present invention by improving the structure of the spring part of the separator cutting device to suppress friction with the surrounding metal, and also by improving the spring part to a non-metallic material, it is possible to prevent the generation of foreign substances due to friction with the surrounding metal.
- foreign matter is introduced into the electrode assembly to prevent short-circuit defects and low-voltage defects, and to minimize the occurrence of foreign matter through the spring part, thereby improving product quality.
- FIG. 1 is a process chart schematically showing a lamination process and a separator cutting process in a battery cell manufacturing process.
- FIG. 2 is a view schematically showing a spring part of a separator cutting device according to the prior art.
- FIG. 3 is a diagram schematically showing a separator cutting device according to the present invention.
- FIG. 4 is a perspective view schematically illustrating a spring part according to an embodiment of a separator cutting device according to the present invention.
- Fig. 5 is a front view showing an exploded view of the spring part according to the present embodiment.
- FIG. 6 is a view schematically showing a state in which a spring unit according to the present embodiment is applied to a separator cutting device.
- FIG. 7 is a front view showing an exploded view of a spring part according to another embodiment of a separator cutting device according to the present invention.
- FIG. 8 is a front cross-sectional view schematically showing a spring bush and a spring holder of a spring unit according to the present embodiment.
- FIG. 9 is a front cross-sectional view schematically showing a state in which a spring is coupled to a spring holder of a spring unit according to the present embodiment.
- FIG. 10 is a view schematically showing how a spring unit according to the present embodiment is applied to a separator cutting device.
- FIG. 11 is a front cross-sectional view schematically illustrating a spring bush and a spring holder of a spring part according to another embodiment of a separator cutting device according to the present invention.
- FIG. 12 is a front sectional view schematically showing a state in which a spring is coupled to a spring holder of a spring unit according to the present embodiment.
- the present invention relates to a separator cutting device in a lamination process of stacking electrode assemblies, comprising: a fixing unit for temporarily fixing the electrode assembly being transported; A cutter support part disposed on top of the fixing part; a cutter unit disposed below the cutter support unit and cutting the separator in the electrode assembly temporarily fixed to the fixing unit; and a spring unit that elastically connects the cutter support unit and the cutter unit to each other and returns the cutter unit to an initial position after cutting the separator.
- the spring unit includes a spring bush coupled to a support shaft provided in the cutter support and the cutter unit, a spring holder integrally coupled to the spring bush, and both ends coupled to the spring holder to expand and contract according to the elevation of the cutter unit Including a spring, the spring holder and the spring bush provide a separator cutting device made of a non-metallic material.
- being disposed "on” may include the case of being disposed at the bottom as well as at the top.
- being disposed "on” may include the case of being disposed at the bottom as well as at the top.
- FIG. 3 is a diagram schematically showing a separator cutting device according to the present invention.
- 4 is a perspective view schematically illustrating a spring part according to an embodiment of a separator cutting device according to the present invention.
- Fig. 5 is a front view showing an exploded view of the spring part according to the present embodiment.
- 6 is a view schematically showing a state in which a spring unit according to the present embodiment is applied to a separator cutting device.
- the separator cutting device 1 includes a fixing part 10 to which the electrode assembly 3 is transferred and a cutter support part 20 disposed above the fixing part 10. And a cutter part 30 disposed below the cutter support part 20 to cut the separation film 3b and a spring part 40 to return the cutter part 30 that cut the separation film 3b to an initial position. do.
- the fixing part 10 is for temporarily fixing the electrode assembly 3 being transported, and in the electrode assembly 3 in which the positive electrode 3a, the negative electrode 3c, and the separator 3b are stacked, the separator 3b This is the section where the cutting of
- the cutter support part 20 is disposed above the fixing part 10 to support the cutter part 30 cutting the separator 3b.
- the cutter part 30 is disposed below the cutter support part 20 and is vertically liftable to cut the separator 3b of the electrode assembly 3 transferred to the upper surface of the fixing part 10. do.
- the spring part 40 elastically connects the cutter support part 20 and the cutter part 30 to each other, cuts the separation film 3b, and returns the cutter part 30 to the initial position.
- support shafts 21 and 31 are formed on the cutter support part 20 and the cutter part 30, respectively, and both ends of the spring 48 are coupled to each of the support shafts 21 and 31 to separate the separator ( 3b) After cutting, the cutter part 30 is returned to the initial position.
- the spring part 40 is a spring bush coupled to the support shafts 21 and 31 respectively provided in the cutter support part 20 and the cutter part 30 ( 41) and the spring holder 43 integrally coupled to the spring bush 41, and both ends are bound to the spring holder 43 to expand and contract according to the elevation of the cutter part 30 Coil-shaped spring (48).
- the spring bush 41 has a bar shape, and coupling holes 41a are formed through each of them so as to be coupled to support shafts 21 and 31 respectively provided in the cutter support part 20 and the cutter part 30 .
- the spring holder 43 is coupled to the end of the spring bush 41 and is composed of a heli-coil type spiral holder.
- Both ends of the spring 48 are coupled to the spring holder 43 so that the cutter part 30 extends when cutting the separator 3b on the fixing part 10, and is elastic after cutting the separator 3b. It is contracted by and made to return the cutter part 30 to the initial position.
- both ends of the spring 48 are coupled to each spring holder 43, and each spring holder 43 is connected to the cutter support part 20 and the cutter part 30 by the spring bush 41.
- both ends of the spring 48 are directly screwed into the spring holder 43 of the helicoil type. That is, the spirally twisted spring wire constituting the spring 48 is screwed while rotating along the continuous spiral space of the helicoil-type spring holder 43.
- the spiral direction of the spring 48 and the spiral direction of the spring holder 43 are formed identically, and the spring wires at both ends of the spring 48 are screwed into the spiral space of the spring holder 48. fixed on both sides
- the spring holder 43 and the spring bush 41 are made of a non-metallic material. In this way, since the spring holder 43 and the spring bush 41 are made of a non-metallic material, it is possible to prevent the occurrence of metal foreign matter when the cutter part 30 comes into contact with a metal structure provided around the cutter part 30. there is.
- the spring holder 43 and the spring bush 41 are integrally formed, but it is also possible that the spring holder 43 and the spring bush 41 are detachably coupled, and various other changes are made. It is feasible
- the spring holder 43 and the spring bush 41 are made of engineering plastics.
- the spring holder 43 and the spring bush 41 are made of polyether ether ketone (PEEK).
- PEEK polyether ether ketone
- the spring holder 43 and the spring bush 41 are made of an engineering plastic material or polyether ether ketone (PEEK), but are not limited thereto and can be modified in various ways.
- PEEK polyether ether ketone
- spring holders 43 integrally formed with the spring bush 41 are installed at both ends of the spring 48.
- the spring bushes 41 integrally coupled to each of the spring holders 43 are attached to the cutter support 20 and the cutter 30. It is fastened to the support shafts 21 and 31 formed respectively.
- the electrode assembly 3 laminated through the lamination device is transferred to the upper surface of the fixing part 10 of the separator cutting device 1.
- the separator cutting device 1 cuts the separator 3b in the electrode assembly 3 in which the positive electrode 3a, the separator 3b, and the negative electrode 3c are stacked.
- the cutter part 30 provided at the lower part of the cutter support part 20 is moved to the upper surface of the fixing part 10 by a hydraulic or electrical signal. , and the cutting knife 33 of the cutter part 30 cuts the separator 3b of the electrode assembly 3 while contacting the upper surface of the fixing part 10 .
- a spring bush 41 is coupled to each of the support shafts 21 and 31 of the cutter support 20 and the cutter 30, and within the spring holder 43 integrally coupled to the spring bush 41.
- both ends of the spring 48 screwed into the spring holder 43 do not expand or contract when the cutter unit 30 is driven, and the rest of the spring 48 disposed outside the spring holder 43. It is made to expand and contract when the cutter is driven.
- the elastic range of the spring 48 is limited by repetitive driving and vibration of the cutter 30 so that the spring 48 and the surrounding metal Contact with structures can be minimized.
- both ends of the spring 48 made of a metal material are screwed into each spring holder 43 made of a non-metal material, the spring holder 43 is moved by the repetitive driving and vibration of the cutter 30 to the surrounding metal structure.
- the spring holder 43 is moved by the repetitive driving and vibration of the cutter 30 to the surrounding metal structure.
- FIG. 7 is a front view showing an exploded view of a spring part according to another embodiment of a separator cutting device according to the present invention.
- 8 is a front cross-sectional view schematically showing a spring bush and a spring holder of a spring unit according to the present embodiment.
- 9 is a front cross-sectional view schematically showing a state in which a spring is coupled to a spring holder of a spring unit according to the present embodiment.
- 10 is a view schematically showing how a spring unit according to the present embodiment is applied to a separator cutting device.
- the spring part 40' is a hollow cylindrical member in which the spring holder 43' is integrally connected with the spring bush 41, and the hollow cylindrical member The end of the spring is fixed in close contact with the inner surface of the spring holder 43'.
- the spring holder 43' of the spring part 40' is integrally connected to the spring bush 41 and is a cylindrical member having a hollow inside, and the spring holder 43' The end of the spring 48 is inserted into the hollow inner surface of and fixed in close contact.
- a screw thread 44a corresponding to the spiral of the spring 48 is formed on the inner surface of the hollow cylindrical spring holder 43', and the spiral direction of the spring 48 and the spring holder 43' The screw direction formed in is formed in the same way.
- both ends of the spring 48 are coupled to the hollow of the spring holder 43', both ends of the spring 48 are formed on the inner surface of the hollow of the spring holder 43' It is screwed and fixed directly to the screw thread 44a.
- 11 is a front cross-sectional view schematically illustrating a spring bush and a spring holder of a spring part according to another embodiment of a separator cutting device according to the present invention.
- 12 is a front sectional view schematically showing a state in which a spring is coupled to a spring holder of a spring unit according to the present embodiment.
- the spring part 40" is a hollow cylindrical member in which a spring holder 43" is integrally connected with the spring bush 41, and the hollow cylindrical spring A cylindrical protrusion 45 is provided at the center of the holder 43", and the spring 48 is attached to an annular coupling groove 46 formed in the inner space of the cylindrical spring holder 43" by the protrusion 45. ) is inserted and fixed by pressing.
- the spring holder 43 " is a cylindrical member having a hollow inside, integrally connected with the spring bush 41, and a cylindrical protrusion at the center of the hollow of the spring holder 43 ". (45) protrudes.
- annular coupling groove 46 is formed in the inner space between the circumferential surface of the protrusion 45 and the inner surface of the hollow opposite to the circumferential surface by the protrusion 45, and the annular coupling groove 46 ), the end of the spring 48 is inserted and fixed by pressing.
- the annular coupling groove 46 is formed, but a screw thread 44b corresponding to the spiral of the spring 48 is formed on the two inner surfaces facing each other. That is, the screw thread 44b is formed on the circumferential surface of the protrusion 45 of the spring holder 43 ", and the screw thread 44b is formed on the inner surface of the hollow of the spring holder 43" facing the circumferential surface of the protrusion 45 44b) is formed.
- a screw thread corresponding to the spiral of the spring 48 is formed on the circumferential surface of the protruding portion 45 among the two mutually opposing inner surfaces forming the annular coupling groove 46 of the spring holder 43 ". (44b) is formed, it is also possible that the end of the spring 48 is screwed into the coupling groove 46.
- a screw thread corresponding to the spiral of the spring 48 is formed on the inner surface of the hollow of the inner surface of the two mutually opposing inner surfaces forming the annular coupling groove 46 of the spring holder 43 "( 44b) is formed, and it is also possible that the end of the spring 48 is screw-coupled to the coupling groove 46.
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (12)
- 전극 조립체를 적층하는 라미네이션 공정의 분리막 커팅장치에 있어서,이송되는 상기 전극 조립체를 일시적으로 고정하는 고정부;상기 고정부의 상부에 배치되는 커터 지지부;상기 커터 지지부의 하부에 배치되고, 상기 고정부에 일시적으로 고정된 상기 전극 조립체 중의 분리막을 커팅하는 커터부; 및상기 커터 지지부와 커터부를 상호 탄력적으로 연결하고, 상기 분리막을 커팅 한 후의 커터부를 최초 위치로 복귀시키는 스프링부;를 포함하고,상기 스프링부는, 상기 커터 지지부과 커터부에 각각 구비된 지지축에 결합하는 스프링 부시와, 상기 스프링 부시에 일체로 결합한 스프링 홀더, 및 상기 스프링 홀더에 양 단이 결속되어 상기 커터부의 승강에 따라 신축되는 스프링을 포함하며,상기 스프링 홀더 및 스프링 부시는 비금속 재질로 이루어지는 것을 특징으로 하는 분리막 커팅장치.
- 제1항에 있어서,상기 스프링 홀더 및 스프링 부시는 일체로 형성되는 것을 특징으로 하는 분리막 커팅장치.
- 제1항에 있어서,상기 스프링 홀더 및 스프링 부시는 엔지니어링 플라스틱인 것을 특징으로 하는 분리막 커팅장치.
- 제3항에 있어서,상기 스프링 홀더 및 스프링 부시는 폴리에테르 에테르 케톤(PEEK)으로 이루어지는 것을 특징으로 하는 분리막 커팅장치.
- 제1항에 있어서,상기 스프링 홀더는 헬리코일 타입의 나선 홀더인 것을 특징으로 하는 분리막 커팅장치.
- 제5항에 있어서,상기 스프링의 양 단은 상기 헬리코일 타입의 나선 홀더에 직접 나사결합되는 것을 특징으로 하는 분리막 커팅장치.
- 제1항에 있어서,상기 스프링 홀더는 상기 스프링 부시와 일체로 연결형성된 중공 원통형의 부재로서, 상기 중공 원통형의 스프링 홀더 안쪽면에 상기 스프링의 단부가 밀착 고정되는 것을 특징으로 하는 분리막 커팅장치.
- 제7항에 있어서,상기 중공 원통형의 스프링 홀더 안쪽면에는 상기 스프링의 나선에 대응하는 나사산이 형성되는 것을 특징으로 하는 분리막 커팅장치.
- 제8항에 있어서,상기 나사산에 대해 상기 스프링의 단부가 직접 나사 결합하는 것을 특징으로 하는 분리막 커팅장치.
- 제1항에 있어서,상기 스프링 홀더는 상기 스프링 부시와 일체로 연결형성된 중공 원통형의 부재로서, 상기 중공 원통형의 스프링 홀더 중심에는 원통형의 돌출부가 구비되고,상기 돌출부에 의해 상기 중공 원통형의 스프링 홀더의 내부공간에 형성된 환형 결합홈에 상기 스프링의 단부가 삽입되어 가압 고정되는 것을 특징으로 하는 분리막 커팅장치.
- 제10항에 있어서,상기 환형 결합홈이 형성하는 대향하는 두 개의 안쪽면에는 각각 상기 스프링의 나선에 대응하는 나사산이 형성되는 것을 특징으로 하는 분리막 커팅장치.
- 제11항에 있어서,상기 나사산에 대해 상기 스프링의 단부가 직접 이중으로 나사 결합하는 것을 특징으로 하는 분리막 커팅장치.
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CN202280012062.7A CN116802863A (zh) | 2021-11-10 | 2022-10-17 | 用于切割隔膜的设备 |
US18/276,344 US20240124259A1 (en) | 2021-11-10 | 2022-10-17 | Apparatus for Cutting Separator |
EP22893048.3A EP4273980A1 (en) | 2021-11-10 | 2022-10-17 | Apparatus for cutting separator |
JP2023547686A JP2024506173A (ja) | 2021-11-10 | 2022-10-17 | 分離膜カッティング装置 |
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- 2022-10-17 CN CN202280012062.7A patent/CN116802863A/zh active Pending
- 2022-10-17 WO PCT/KR2022/015756 patent/WO2023085625A1/ko active Application Filing
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KR101106337B1 (ko) * | 2004-09-22 | 2012-01-18 | 삼성에스디아이 주식회사 | 전극판 컷팅 장치 |
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KR101791297B1 (ko) | 2014-07-30 | 2017-10-27 | 주식회사 엘지화학 | 전지의 분리막 커팅 방법 및 초음파를 이용한 전지의 분리막 커팅기 |
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EP4273980A1 (en) | 2023-11-08 |
CN116802863A (zh) | 2023-09-22 |
US20240124259A1 (en) | 2024-04-18 |
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