WO2024082172A1 - Machine de revêtement pour électrode d'élément de batterie - Google Patents

Machine de revêtement pour électrode d'élément de batterie Download PDF

Info

Publication number
WO2024082172A1
WO2024082172A1 PCT/CN2022/126149 CN2022126149W WO2024082172A1 WO 2024082172 A1 WO2024082172 A1 WO 2024082172A1 CN 2022126149 W CN2022126149 W CN 2022126149W WO 2024082172 A1 WO2024082172 A1 WO 2024082172A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow path
coating device
outlet opening
sheet
aperture
Prior art date
Application number
PCT/CN2022/126149
Other languages
English (en)
Inventor
Dan GENG
Denis Gaston Fauteux
Jin Wei Li
Original Assignee
Techtronic Cordless Gp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Techtronic Cordless Gp filed Critical Techtronic Cordless Gp
Priority to PCT/CN2022/126149 priority Critical patent/WO2024082172A1/fr
Publication of WO2024082172A1 publication Critical patent/WO2024082172A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates generally to battery cell manufacturing devices, and in particular, to battery cell coating devices for coating layers of a battery cell electrode assembly.
  • Batteries, or battery cells, are critical in providing power to many electrical devices that are relied upon daily. Cylindrical batteries with a rolled arrangement are commonly used to power electrical devices. These battery types are often referred to as “jelly roll” batteries. Additionally, other battery cells, such as pouch cells and/or prismatic cells are also commonly used to power electrical devices. Commonly, battery cells includes electrode sheets (e.g., anode sheets and cathode sheets) having an active material applied to at least a portion thereof. A coating machine is typically used to apply one or more active materials to a portion of the electrode sheets.
  • electrode sheets e.g., anode sheets and cathode sheets
  • a coating device for a battery cell including a bottom panel, a top panel removably coupled relative to the bottom panel, at least one lower sheet in contact with the bottom panel and defining a first flow path, at least one upper sheet in contact with the top panel and defining a second flow path, and a separation sheet disposed between the lower sheet and the upper sheet and configured to separate the first flow path from the second flow path.
  • the first flow path is in fluid communication with a first outlet opening and the second flow path is in fluid communication with a second outlet opening.
  • a height of the first outlet opening is equal to or taller than a height of the second outlet opening.
  • a height of the first outlet opening is equal to or less than a height of the second outlet opening.
  • the at least one lower sheet includes an aperture coupled to the first outlet opening, wherein the first outlet opening defines a width that is less than a width defined by the aperture.
  • the first flow path is coupled to a first inlet aperture, wherein a first material is received by the first inlet aperture.
  • the second flow path is coupled to two second inlet apertures, wherein the two second inlet apertures receive a second material.
  • the second flow path includes a second aperture that directs the received second material to a second outlet opening.
  • the second aperture includes a curved wall configured to guide the second material to flow to the second outlet opening.
  • the second aperture further includes angled walls that connect the second aperture to the second outlet opening.
  • one or more of the bottom panel and the top panel include a trough.
  • the one or more of the at least one lower sheet and/or the at least one upper sheet includes at least two sheets to achieve a desired thickness.
  • a coating device for a battery cell including a bottom panel having a first inlet aperture and a first outlet opening configured to dispose a first material onto a substrate material associated with a first electrode of the battery cell, and a top panel having a second inlet aperture and a second outlet opening configured to dispose a second material onto the substrate material associated with the first electrode of the battery cell.
  • the first material is different than the second material.
  • the bottom panel defines a first flow path
  • the top panel defines a second flow path
  • the first flow path is separated from the second flow path
  • the coating device further includes a lower sheet that forms the first flow path.
  • the coating devices further includes a separating sheet disposed between the lower sheet and the upper sheet.
  • the first material and the second material are applied to the substrate simultaneously.
  • a method for coating a battery cell is described using a coating device.
  • the method includes supplying a first material through a first flow path and a second material through a second flow path.
  • the method further includes moving a substrate of an electrode of a battery cell with respect to the coating device, dispensing the first material onto the substrate, and dispensing the second material onto the dispensed first material.
  • dispensing the first material and the second material occurs simultaneously.
  • the first flow path is defined by a lower sheet and the second flow path is defined by an upper sheet.
  • a separator sheet is positioned between the lower sheet and the upper sheet such that the first flow path is separated from the second flow path.
  • embodiments may include hardware, software, and electronic components or modules that, for purposes of discussion, may be illustrated and described as if the majority of the components were implemented solely in hardware.
  • the electronic-based aspects may be implemented in software (e.g., stored on non-transitory computer-readable medium) executable by one or more processing units, such as a microprocessor and/or application specific integrated circuits ( “ASICs” ) .
  • ASICs application specific integrated circuits
  • servers, ” “computing devices, ” “controllers, ” “processors, ” etc., described in the specification can include one or more processing units, one or more computer-readable medium modules, one or more input/output interfaces, and various connections (e.g., a system bus) connecting the components.
  • FIG. 1 is an exploded view of a battery cell electrode assembly, according to some embodiments.
  • FIG. 2 is a perspective view of a coating device for coating a battery cell, according to some embodiments.
  • FIG. 3 is a back perspective view of the coating device of FIG. 2, according to some embodiments.
  • FIG. 4 is a side perspective view of the coating device of FIG. 2, according to some embodiments.
  • FIG. 5 is an exploded perspective view of the coating device of FIG. 2, illustrating sheets that provide flow paths, according to some embodiments.
  • FIG. 6 is a front view of a lower sheet of the coating device of FIG. 5, according to some embodiments.
  • FIG. 7 is a front view of an upper sheet of the coating device of FIG. 5, according to some embodiments.
  • FIG. 8 is a front view of a separating sheet of the coating device of FIG. 5, according to some embodiments.
  • FIG. 9 is a cross-sectional view of the coating device of FIG. 2 along line B-B, illustrating a first flow path, according to some embodiments.
  • FIG. 10 is a cross-sectional view of the coating device of FIG. 2 along line C-C, illustrating a second flow path, according to some embodiments.
  • FIG. 11 is a cross-sectional view of the coating device of FIG. 2 along line D-D, illustrating a second flow path, according to some embodiments.
  • FIG. 12 is a flow chart illustrating a process for coupling sheets to the coating device of FIG. 2, according to some embodiments.
  • FIG. 13 is a flow chart illustrating a process for coating an electrode assembly using the coating device of FIG. 2, according to some embodiments.
  • FIG. 1 illustrates an exemplary electrode assembly 10 associated with a battery cell, such as a lithium-ion battery cell. While described with respect to a lithium-ion battery cell, it is understood that the electrode assembly of FIG. 1 may be applicable to other battery chemistries as well, such as lithium iron phosphate, or other battery chemistries as required for a given application. Furthermore, the electrode assembly 10 of FIG. 1 may be used with various battery cell types, such as cylindrical cells (e.g., 21700, 18650, etc. ) , pouch cells, and/or prismatic cells. As shown in FIG. 1, the electrode assembly 10 includes an anode 46, a cathode 50, and one or more separators 54 positioned between the anode 46 and the cathode 50.
  • a battery cell such as a lithium-ion battery cell. While described with respect to a lithium-ion battery cell, it is understood that the electrode assembly of FIG. 1 may be applicable to other battery chemistries as well, such as lithium iron phosphate, or
  • the anode 46 includes an anode sheet
  • the cathode 50 includes a cathode sheet
  • the separator 54 includes an insulator or separator sheet.
  • the anode 46 and/or cathode 50 may generally be formed on a substrate of conductive material such as aluminum or copper.
  • the anode 46 is formed on substrate 56 and the cathode 50 is formed on substrate 60. While the substrates 56, 60 are described as being aluminum or copper, it is contemplated that other conductive materials may also be used as required for a given application.
  • the anode 46 and the cathode 50 may use the same material for substrates 56, 60. However, in other examples, the anode 46 and the cathode 50 may each have substrates 56, 60 of different materials as required for a given application.
  • the anode 46 may have a coated portion 58 and the cathode 50 may have a coated portion 62 that are formed on the respective substrates 56, 60.
  • the coated portions 58, 62 may be coated with an active material as required for the specific application.
  • An exposed portion of the above substrates 56, 60 of the anode 46 and/or cathode 50 form the uncoated portion.
  • a coating device may be used to apply active material to the anode 46 and/or cathode 50.
  • the electrode assembly 18 may have a nominal voltage between approximately 1 V and approximately 5 V, and a nominal capacity between about 1 Ah and about 5 Ah or more (e.g., up to about 9 Ah) .
  • the electrode assembly 18 may have any rechargeable chemistry type, such as, for example Lithium ( “Li” ) , Lithium-ion ( “Li-ion” ) , other Lithium-based chemistry, Nickel-Cadmium ( “NiCd” ) , Nickel-metal Hydride ( “NiMH” ) , etc.
  • FIGS. 2-4 illustrate a battery cell electrode coating device 110 according to one embodiment.
  • the coating device 110 is used to apply a coat of one or more active materials to a bare electrode substrate, such as an electrode substrate.
  • the coating device 110 may apply the one or more active materials at a specific thickness as required for a given electrode (e.g., the anode 46 or the cathode 50) or battery type.
  • Active materials such as lithium cobalt oxide ( “LCO” ) , lithium manganese oxide ( “LMO” ) , lithium nickel cobalt aluminum oxide ( “NCA” ) , lithium nickel manganese cobalt oxide ( “NMC” ) , lithium iron phosphate ( “LFP” ) , sublimed sulfer, lithium manganese nickel oxide ( “LMNO/Spinel” ) , and/or other applicable active materials may be applied to the cathode 50. Active materials, such as silicon, graphite, or other applicable active material may be applied to the anode 46.
  • the one or more active materials may be in a slurry form (or other liquid-type form) which is then applied by the coating device 110, as described in more detail below.
  • the electrode substrate may be composed of copper.
  • the substrate may be composed of aluminum.
  • the substrate may be composed of an alternative material.
  • the active materials are used to positively or negatively charge the electrodes of the electrode assembly 10.
  • the thickness and weight of the active material coating affects an energy density of the battery. For example, thicker coatings of the active materials may increase the capacity of the battery while decreasing discharge rate of the battery. Thinner coatings of the active material may decrease the capacity of the battery while increasing discharge rate of the battery.
  • the thickness of the active material may be approximately 1 ⁇ m to 100 ⁇ m. However, values of less than 1 ⁇ m or more than 100 ⁇ m are also contemplated.
  • the coating device 110 includes multiple input ports that allow the coating device 110 to apply two or more layers of the active material onto the substrate in a single operation. Each layer applied to the substrate may be a different material. In some embodiments, the coating device 110 may apply two layers onto the substrate. In other embodiments, the coating device 110 may apply more than two layers of active material onto the substrate.
  • the coating device 110 includes a bottom panel 114 and a top panel 118.
  • the bottom panel 114 includes arms 122 positioned on sides of the coating device 110.
  • the arms 122 extend upwardly from the bottom panel 114 and may be pivotably coupled to the top panel 118, such that the top panel 118 is pivotable relative to the bottom panel 114.
  • the arms 122 are pivotably coupled to the top panel via a pivot pin (not shown) .
  • the top panel 118 is movable between an open position and a closed position. In the open position, a top inner surface 130 is angled relative to a bottom inner surface 134 of the bottom panel 114, as shown in FIG. 5. In other words, the top panel 118 is pivoted away from the bottom panel 114.
  • the top panel 118 and the bottom panel 114 may be separate components coupled by one or more fastener, such as bolts, clamps, etc.
  • the top panel 118 and the bottom panel 114 may be removably coupled to one another.
  • the top inner surface 130 is in contact with the bottom inner surface 134, as shown in FIG. 2.
  • the coating device 110 is operable to apply the active material when the coating device 110 is in the closed position.
  • the bottom panel 114 includes a first inlet aperture 138.
  • the first inlet aperture 138 is positioned on a first end 140 of the coating device 110.
  • a first material 142 may be supplied to the first inlet aperture 138 such that a first layer of the active material having the first material 142 may be applied to the substrate.
  • the bottom panel 114 may include solely one first inlet aperture 138.
  • the bottom panel 114 may include a plurality of first inlet apertures 138.
  • the top panel 118 includes a pair of second inlet apertures 146.
  • the top panel 118 may include solely one second inlet aperture 146.
  • the top panel 118 may include more than two second inlet apertures 146.
  • the second inlet apertures 146 can be positioned on a top of the coating device 110.
  • a second material 150 may be supplied to the second inlet apertures 146 such that a second layer of the active material having the second material 150 may be applied to the substrate on top of the first layer.
  • the coating device 110 may include additional inlet apertures such that additional layers may be applied to the substrate.
  • sheets are provided between the bottom panel 114 and the top panel 118.
  • the sheets provide flow paths for directing the first and second materials 142, 150 through the coating device 110.
  • the coating device 110 includes a lower sheet 154, an upper sheet 158, and a separating sheet 162.
  • the lower sheet 154 is in contact with the bottom inner surface 134 to define a first flow path 166.
  • the upper sheet 158 is in contact with the top inner surface 130 when the top panel 118 is in the closed position to define a second flow path 170.
  • the separating sheet 162 is positioned between the upper sheet 158 and the lower sheet 154. The separating sheet 162 separates the first flow path 166 from the second flow path 170.
  • the separating sheet 162 prevents the first material 142 from interacting with the second material 150 during an application process.
  • the sheets are formed from a metallic material, such as a steel, zinc, aluminum, or the like.
  • the sheets may be formed from an alternative material, such as a polymer, composite, plastic, or the like.
  • the lower sheet 154 includes several lower sheet apertures 174 that align with corresponding bottom panel apertures 178 positioned on the bottom panel 114.
  • the lower sheet apertures 174 provide positioning such that the lower sheet 154 is in a correct position relative to the bottom panel 114.
  • bolts may pass through the lower sheet apertures 174 and one or more corresponding apertures on the bottom panel 114 and/or the top panel 118 to allow for the bottom panel 114 and the top panel 118 to be coupled.
  • the bottom panel apertures 178 do not extend through the bottom panel 114 in some embodiments.
  • the lower sheet 154 further includes a first aperture 182 disposed above the lower sheet apertures 174. In some embodiments, the first aperture 182 is generally rectangular in shape.
  • the first aperture 182 may be circular in shape, octagonal in shape, or other shape as required for a given application.
  • the first aperture 182 aligns with a trough 186 disposed in the bottom panel 114 and includes a first outlet opening 194.
  • the trough 186 is in fluid communication with the first inlet aperture 138.
  • a first conduit 190 is provided to facilitate a flow of the first material 142 from the first inlet aperture 138 to the trough 186.
  • the first outlet opening 194 includes a width W1 that is smaller than a width W2 of the first aperture 182.
  • the first material 142 is directed from the first aperture 182, into the first outlet opening 194.
  • the first outlet opening 194 is positioned on a second end 196 of the coating device 110.
  • the second end 196 of the coating device 110 is opposite to the first end 140.
  • the first outlet opening 194 allows for the first material 142 to be applied onto the substrate.
  • the first aperture 182 and the first outlet opening 194, together with the first conduit 190 and the first inlet aperture 138 form the first flow path 166.
  • the first inlet aperture 138 on the bottom panel 114 is connected to a nozzle (not shown) .
  • the nozzle supplies the first material 142 to the coating device 110.
  • the nozzle may supply the first material 142 at a first pressure.
  • the first material 142 travels through the first inlet aperture 138, through the first conduit 190, and into the trough 186.
  • a volume of the first material 142 approaches a volume of the trough 186. Since there is limited room within the trough 186, the first material 142 is forced out of the coating device 110 through the first outlet opening 194.
  • the lower sheet 154 directs the first material 142 from the first aperture 182, through the first outlet opening 194, and onto the substrate.
  • the upper sheet 158 includes several upper sheet apertures 198 that align with top panel apertures 202 on the top panel 118.
  • the upper sheet apertures 198 provide positioning such that the upper sheet 158 is in a correct position relative to the top panel 118.
  • bolts may pass through the upper sheet apertures198 and the lower sheet apertures 174 and one or more corresponding apertures on the bottom panel 114 and/or the top panel 118 to allow for the bottom panel 114 and the top panel 118 to be coupled.
  • the top panel apertures 202 extend through the top panel 118.
  • the upper sheet apertures 198 further includes material apertures 206 that align with second conduits 210 that are coupled to the second inlet apertures 146.
  • the upper sheet 158 includes a second aperture 214 that connects the material apertures 206 to a second outlet opening 218.
  • a trough can be provided in the top panel 118 (similar to the trough 186 in the lower panel) .
  • the second outlet opening 218 is positioned on the second end 196 of the coating device 110.
  • the second outlet opening 218 dispenses the second material 150 onto the substrate.
  • the second aperture 214 includes a curved wall 222 that connects the material apertures 206 along a width of the upper sheet 158.
  • the curved wall 222 can guide the material to flow to the second outlet opening 218.
  • the second aperture 214 further includes angled walls 226 that connect the material apertures 206 to the second outlet opening 218.
  • the angled walls 226 are angled such that a width of the second aperture 214 decreases. For example, a width W3 of the curved wall 222 is less than a width W4 of the second outlet opening 218. The decrease in width directs the second material 150 from the material apertures 206, to the second outlet opening 218.
  • the second aperture 214 and the second outlet opening 218, along with the second conduits 210 and the second inlet apertures 146 define the second flow path 170.
  • the second inlet apertures 146 on the top panel 118 are connected to nozzles.
  • the nozzles supply the second material 150 to the coating device 110.
  • the second material 150 travels through the second inlet apertures 146, through the second conduits 210, and to the material apertures 206 in the upper sheet 158. Since there is limited room in the material apertures 206, the second material 150 is forced into the second aperture 214. As the second material 150 continues to travel into the second aperture 214, the second material 150 is then forced through the second outlet opening 218.
  • the separating sheet 162 includes separating apertures 230 that align with the upper sheet apertures 198 and the lower sheet apertures 174 such that the separating sheet 162 is aligned with the upper sheet 158 and the lower sheet 154.
  • a remainder of the separating sheet 162 is a solid material 234.
  • the solid material 234 has a strength sufficient to withstand the pressures of the first material 142 and/or the second material 150 being applied. The solid material 234 prevents the first material 142 from interacting with the second material 150. Specially, the solid material 234 covers the first aperture 182 on the lower sheet 154. Therefore, the first material 142 held within the trough 186 in the bottom panel 114 is separated from the second material 150 via the separating sheet 162.
  • the coating device 110 may include additional sheets to provide additional flow paths.
  • a separating sheet 162 is included for each additional flow path that a sheet creates.
  • a separating sheet 162 is disposed between adjacent sheets which create flow paths.
  • the top panel 118 is moved from the closed position to the open position (Step 310) .
  • the lower sheet 154 is placed on the bottom inner surface 134 such that the lower sheet apertures 174 are aligned with the bottom panel apertures 178 (Step 314) .
  • the separating sheet 162 is then placed onto the lower sheet 154 such that the lower sheet apertures 174 are aligned with the separating apertures 230 (Step 318) .
  • the upper sheet 158 is then placed onto the separating sheet 162 such that the separating apertures 230 are aligned with the upper sheet apertures 198 (Step 322) .
  • Fasteners may be inserted through the upper sheet apertures 198, the separating apertures 230, the lower sheet apertures 174, and the bottom panel apertures 178 to secure the sheets to the bottom panel 114 (Step 326) .
  • the upper sheet 158, the lower sheet 154, and the separating sheet 162 may be secured to the coating device 110 solely through a clamping force provided between the top panel 118 and the bottom panel 114.
  • the sheets may be secured to the coating device 110 through an alternative device.
  • the top panel 118 may be pivoted to the closed position (step 330) . Once in the closed position, the user may begin a coating process (step 334) . Steps 314 and 318 may be repeated until a desired number of flow paths are included in the coating device 110. For example, a second separating sheet may be placed onto the upper sheet 158, and a third sheet may be placed onto the second separating sheet such that the third sheet creates an additional flow path.
  • the first inlet aperture 138 on the bottom panel 114 is connected to a nozzle and the second inlet apertures 146 on the top panel 118 are connected to nozzles (Step 410) .
  • the nozzles supply the first material 142 and the second material 150 to the first and second inlet apertures 138, 146, respectively (Step 414) .
  • Additional inlets may be included in the coating device 110 such that additional nozzles are coupled to the additional inlets.
  • the first and second inlet apertures 138, 146 may be connected to the nozzles simultaneously, to allow for the first material and the second material to be supplied simultaneously.
  • the first and second inlet apertures 138, 146 may be connected to the nozzles at different times.
  • the first material 142 is pushed through the first flow path 166 (Step 418) . Once the first material 142 reaches the first outlet opening 194, the first material 142 is dispensed onto the substrate (Steps 422 and 426) . Similarly, the second material 150 is pushed through the second flow path 170 (Step 418) . Once the second material 150 reaches the second outlet opening 218, the second material 150 is dispensed onto the substrate (Steps 422 and 426) . In some embodiments, the first material 142 and the second material 150 are dispensed onto the substrate simultaneously. By dispensing both the first material and the second material simultaneously, the time required to manufacture an electrode assembly is reduced due to the reduced number of operations required to apply an active coating to the electrode assembly.
  • Exit forces are determined based on the rate that the first and second materials 142, 150 are being supplied from the nozzles.
  • the first and second materials 142, 150 may be supplied from the nozzles at the same rate.
  • the first and second materials 142, 150 may be supplied from the nozzles at different rates.
  • the exit forces may also be determined by the material compositions of the first and second materials 142, 150.
  • the amount of the first material 142 applied to the substrate may be the same as the amount of the second material 150 applied to the substrate. In other embodiments, the amount of first material 142 applied to the substrate may be different than the amount of the second material 150 applied to the substrate.
  • Thicknesses of the first and second materials 142, 150 on substrate may be determined by thicknesses of the lower and upper sheets 154, 158 and/or the moving speed of the coating device. For example, when the lower and upper sheets 154, 158 define a thickness, that thickness correlates to a thickness of the first and second flow paths 166, 170, respectively. In some embodiments, the lower and upper sheets 154, 158 have a thickness of 0.3mm. However, other thickness values of more than 0.3mm or less than 0.3mm are also contemplated as required for a given application. Moreover, the present technology can easily change the thickness of the first and second flow paths 166, 170 by changing the thickness of the lower and upper sheets 154, 158.
  • the user can achieve a thickness of 0.6mm by using two sheets together.
  • Two or more lower and/or upper sheets 154, 158 can be used together in order to achieve different thickness.
  • the user can easily and precisely adjust the height of the outlet openings thereby varying the thickness of the active material applied to the relevant substrate.
  • various numbers of lower sheets 154 and/or upper sheets 158 may have different thicknesses such that a combination of a subset of the lower/upper sheets can allow for a desired height of the outlet openings, and thereby a desired thickness of active material to be applied to the desired substrate.
  • a thickness of the lower sheet 154 may be the same as a thickness of the upper sheet 158.
  • the thickness of the lower sheet 154 may be different than the thickness of the upper sheet 158.
  • the thicknesses or the first and second materials 142, 150 may additionally be determined by thicknesses of the first outlet opening 194 and the second outlet opening 218.
  • a thickness of the first outlet opening 194 may be the same as a thickness of the second outlet opening 218.
  • the thickness of the first outlet opening 194 may be different than the thickness of the second outlet opening 218.
  • widths of the first and second materials 142, 150 on the substrate may be determined by widths of the lower and upper sheets 154, 158.
  • a width of the lower sheet 154 may be the same as a width of the upper sheet 158.
  • the width of the lower sheet 154 may be different than the width of the upper sheet 158.
  • the widths of the first and second materials 142, 150 on the substrate may additionally be determined by the widths of the first outlet opening 194 and the second outlet opening 218.
  • a width of the first outlet opening 194 may be the same as a width of the second outlet opening 218.
  • the width of the first outlet opening 194 may be different than the width of the second outlet opening 218.
  • the thicknesses and the widths of the first and second materials 142, 150 on the substrate may, therefore, be the same or different.
  • This coating device 110 described herein is useful for coating an electrode substrate having layers of different materials.
  • an inner layer close to the substrate may be more adhesive such that the active material can be firmly adhered to the substrate.
  • An outer layer may include a higher concentration of active material so as to provide a higher energy density, and which is more easily adhered to the inner layer.
  • the first material 142 is a material having a higher concentration of adhesive and the second material 150 is a material having a higher concentration of active material.
  • the first outlet opening 194 may be positioned upstream of the second outlet opening 218. Therefore, the first material 142 can be applied to the substrate and the second material 150 can be applied on the first material 142. In this way, an electrode having different layers of different material can be formed.
  • the first material and the second material may have different compositions as desired.
  • the first material 142 layer and the second material 150 layer may be applied such that the first material 142 layer and the second material 150 layer have different heights.
  • the layer of the first material 142 can be thinner than layer of the second material 150.
  • the height of the first outlet opening 194 can have a smaller height H1 than the height H2 of the second outlet opening 218.
  • the layer of the first material 142 can be thicker than the layer of the second material 150 can be thinner.
  • the height H1 of the first outlet opening is greater than the height H2 of the second outlet opening 218.
  • the height of the first outlet opening 194 is the same as the height H2 of the second outlet opening 218.
  • the heights H1 and H2 are equal to the thickness of the lower sheet 154 and the upper sheet 158, respectively.
  • the substrate is moved with respect to the coating device 110 during the active material application process.
  • the coating device 110 may move with respect to the substrate.
  • the layers of different materials can be applied to the substrate at the same time. The different materials can be intermingled at the interface between two layers, which would enhance the adhesion between the layers. The strip off of the layers can be prevented.
  • embodiments described herein provide, among other things, a coating device 110 for a battery cell electrode assembly 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

Un dispositif de revêtement pour une électrode d'élément de batterie comprend un panneau inférieur, un panneau supérieur pouvant pivoter par rapport au panneau inférieur, une feuille inférieure en contact avec le panneau inférieur et comprenant un premier trajet d'écoulement, une feuille supérieure en contact avec le panneau supérieur et comprenant un second trajet d'écoulement, et une feuille de séparation disposée entre la feuille inférieure et la feuille supérieure et conçue pour séparer le premier trajet d'écoulement du second trajet d'écoulement. Le dispositif de revêtement est configuré pour permettre l'application simultanée d'un premier matériau et d'un second matériau sur un ensemble électrode.
PCT/CN2022/126149 2022-10-19 2022-10-19 Machine de revêtement pour électrode d'élément de batterie WO2024082172A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/126149 WO2024082172A1 (fr) 2022-10-19 2022-10-19 Machine de revêtement pour électrode d'élément de batterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/126149 WO2024082172A1 (fr) 2022-10-19 2022-10-19 Machine de revêtement pour électrode d'élément de batterie

Publications (1)

Publication Number Publication Date
WO2024082172A1 true WO2024082172A1 (fr) 2024-04-25

Family

ID=90736669

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/126149 WO2024082172A1 (fr) 2022-10-19 2022-10-19 Machine de revêtement pour électrode d'élément de batterie

Country Status (1)

Country Link
WO (1) WO2024082172A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103372520A (zh) * 2012-04-17 2013-10-30 富士胶片株式会社 涂布装置及使用其的带涂膜薄膜的制造方法
CN110612165A (zh) * 2018-01-08 2019-12-24 株式会社Lg化学 电极浆料涂覆设备及方法
JP2021010867A (ja) * 2019-07-05 2021-02-04 株式会社エンビジョンＡｅｓｃエナジーデバイス 塗工装置及び電池用電極の製造方法
CN112512701A (zh) * 2018-08-20 2021-03-16 富士胶片株式会社 层叠体的制造方法
WO2022060177A1 (fr) * 2020-09-17 2022-03-24 주식회사 엘지에너지솔루션 Dispositif d'enduction à filière à double fente et procédé d'enduction de bouillie de matériau actif d'électrode l'utilisant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103372520A (zh) * 2012-04-17 2013-10-30 富士胶片株式会社 涂布装置及使用其的带涂膜薄膜的制造方法
CN110612165A (zh) * 2018-01-08 2019-12-24 株式会社Lg化学 电极浆料涂覆设备及方法
CN112512701A (zh) * 2018-08-20 2021-03-16 富士胶片株式会社 层叠体的制造方法
JP2021010867A (ja) * 2019-07-05 2021-02-04 株式会社エンビジョンＡｅｓｃエナジーデバイス 塗工装置及び電池用電極の製造方法
WO2022060177A1 (fr) * 2020-09-17 2022-03-24 주식회사 엘지에너지솔루션 Dispositif d'enduction à filière à double fente et procédé d'enduction de bouillie de matériau actif d'électrode l'utilisant

Similar Documents

Publication Publication Date Title
US11831026B2 (en) Single pouch battery cells and methods of manufacture
CN110049824B (zh) 通过狭缝的移动改变电极活性材料浆料的涂布形式的狭缝式模具涂布机
JP6794473B2 (ja) 塗工ダイ、塗工装置、塗工方法及び二次電池の製造方法
US20090176156A1 (en) Protective circuit board, battery pack, and associated methods
CN101005148A (zh) 混合电源装置
EP4393606A1 (fr) Tête de matrice de revêtement et dispositif de revêtement pour feuille d'électrode de batterie
US20220231324A1 (en) Charging and discharging method for high-capacity retention rate lithium ion battery
US20210313552A1 (en) Coating Apparatus
WO2024082172A1 (fr) Machine de revêtement pour électrode d'élément de batterie
KR20190077835A (ko) 이차전지의 제조시스템 및 제조방법
JP2022506188A (ja) エネルギー貯蔵装置用の断続的コーティング乾式電極及びその製造方法
WO2013122448A1 (fr) Pile au lithium-ion
CN109417190A (zh) 二次电池
EP4441815A1 (fr) Infiltration d'électrolyte améliorée dans une cellule de batterie
WO2022060177A1 (fr) Dispositif d'enduction à filière à double fente et procédé d'enduction de bouillie de matériau actif d'électrode l'utilisant
EP3796424A1 (fr) Rechargement rapide de batterie au lithium-ion
CN217062168U (zh) 双极性电极以及用于制备其的设备
KR100709863B1 (ko) 이차 전지
CN217444431U (zh) 双极性集流体以及用于制备其的设备
EP4269064A1 (fr) Système de dépôt de matériau sur un substrat et procédé de fabrication d'une batterie
JP4439607B2 (ja) 基材への塗料の間欠塗布装置および電池用電極板の製造装置
JP2018018645A (ja) リチウムイオン二次電池
CN118016954B (zh) 一种分配管结构及安装方法
CN219051901U (zh) 浆料涂布设备以及电池加工系统
KR101760407B1 (ko) 보조 유입로가 형성되어 있는 토출 부재 및 이를 포함하는 전극 합제 코팅 장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22962362

Country of ref document: EP

Kind code of ref document: A1