WO2025020431A1 - 一种涂布装置及电池加工设备 - Google Patents

一种涂布装置及电池加工设备 Download PDF

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Publication number
WO2025020431A1
WO2025020431A1 PCT/CN2023/138536 CN2023138536W WO2025020431A1 WO 2025020431 A1 WO2025020431 A1 WO 2025020431A1 CN 2023138536 W CN2023138536 W CN 2023138536W WO 2025020431 A1 WO2025020431 A1 WO 2025020431A1
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WO
WIPO (PCT)
Prior art keywords
component
surface density
coating
discharge port
adjusting
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2023/138536
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English (en)
French (fr)
Inventor
林银祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
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 Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to EP23946506.5A priority Critical patent/EP4603194A4/en
Publication of WO2025020431A1 publication Critical patent/WO2025020431A1/zh
Priority to US19/212,021 priority patent/US20250276339A1/en
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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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
    • 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
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0266—Coating heads with slot-shaped outlet adjustable in length, e.g. for coating webs of different width
    • 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
    • B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
    • 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
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
    • 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
    • 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
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0258—Coating heads with slot-shaped outlet flow controlled, e.g. by a valve
    • 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
    • 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 to the field of battery technology, and in particular to a coating device and battery processing equipment.
  • the coating process of the pole piece is an important link in the process design and production process.
  • the quality of coating plays a decisive role in the performance of the entire battery. Therefore, in the production process of batteries, it is crucial to improve the coating quality and coating efficiency.
  • the present application provides a coating device for coating a pole piece, the coating device comprising:
  • the coating die head comprises an upper die head and a lower die head which are spaced apart, and a discharge port is formed between the upper die head and the lower die head;
  • An adjustment component is disposed on the upper die head.
  • a control component is connected to the regulating component, and the control component is used to detect the actual surface density of the coating on the electrode piece, and control the regulating component to adjust the flow area of the discharge port according to the difference between the actual surface density and the target surface density;
  • the adjustment component is configured to adjust the flow area of the discharge port by adjusting the spacing distance between the upper die head and the lower die head.
  • the real-time detection of the actual surface density of the coating on the pole piece by the control component can timely reflect the coating quality of the slurry on the pole piece. Furthermore, the control component automatically controls the adjustment component to adjust the flow area of the discharge port according to the difference between the actual surface density and the target surface density, thereby more flexibly adjusting the discharge amount of the discharge port, so that the actual surface density of the coating on the pole piece meets the production requirements, thereby improving the coating quality and coating efficiency.
  • the adjustment component includes an adjustment member and a first drive member that are drive-connected.
  • the adjustment member is movably disposed on the coating die head, and at least a portion of the adjustment member is located in the discharge port.
  • the first drive member is communicatively connected to the control component and is used to drive the adjustment member to move in the discharge port to adjust the flow area of the discharge port.
  • the flow area of the discharge port can be quickly adjusted, and the discharge amount of the discharge port can be adjusted, thereby improving the coating quality of the electrode piece.
  • the discharge port is longitudinally extended along the first direction
  • the adjusting member includes a plurality of adjusting sub-members arranged along the first direction, and each adjusting sub-member is movably arranged in the discharge port along the second direction;
  • the first direction, the second direction and the opening direction of the discharge port are arranged to intersect each other.
  • the discharge port can be divided into different discharge sub-ports along the first direction, and the flow area of the corresponding discharge sub-port can be adjusted by each adjusting sub-component, so that the slurry coating amount on the coating area corresponding to the discharge sub-port can be adjusted in a targeted manner. In this way, the coating quality on the electrode can be adjusted more accurately.
  • the coating device further comprises a moving component disposed on the coating die head, the moving component being connected to the first driving member and being communicatively connected to the control component;
  • the moving assembly is used to drive the first driving member to move along the first direction, so that the first driving member can drive each adjusting sub-member to move along the second direction.
  • the moving component can drive the first driving member to move flexibly in the first direction, so that the first driving member is more accurately connected to the corresponding adjusting sub-component, thereby accurately adjusting the coating quality on the pole piece at the position corresponding to the adjusting sub-component.
  • a connector is protruding from each adjusting sub-component and one of the first driving components, and a slot is provided on each adjusting sub-component and the other of the first driving components.
  • Each adjusting sub-component and the first driving component are plugged into each other through the connector and the slot.
  • the first driving component can be quickly connected and separated from different adjusting sub-components, so that the different adjusting sub-components can be driven to move in the discharge port by the first driving component, and the flow area of the discharge port at different positions in the first direction can be more flexibly adjusted.
  • the moving assembly includes a second driving member, a guide member and a transmission member
  • the guide member is extended along the first direction and is disposed on the coating die head
  • the transmission member is movably disposed on the guide member along the first direction and is respectively connected to the first driving member and the second driving member
  • the second driving member is communicatively connected to the control assembly
  • the transmission member is configured to be able to drive the first driving member to move along the first direction under the drive of the second driving member.
  • the second driving member can drive the transmission member to move along the first direction under the guidance of the guide member, thereby driving the first driving member to move in the first direction, so that the first driving member can move more accurately and flexibly to the position corresponding to the corresponding adjusting sub-member, thereby smoothly driving the adjusting sub-member to move in the discharge port.
  • control component includes a detection component and a control component that are communicatively connected.
  • the detection component is used to detect the actual surface density coated on the electrode, and the control component is used to receive the actual surface density and compare it with the target surface density to obtain a difference, so as to control the adjustment component to adjust the flow area of the discharge port according to the difference.
  • the actual surface density of the coated area on the electrode can be detected in real time, and timely feedback is given to the control part.
  • the control part can quickly compare the actual surface density with the target surface density, so as to timely control the adjustment component to make Corresponding operations can make the actual surface density gradually approach the target surface density, or be equal to the target surface density, thereby improving the coating quality and coating efficiency of the electrode.
  • the coating device also includes a piezoelectric sensor that is communicatively connected to the control component, the piezoelectric sensor is connected to each adjustment sub-component, and the piezoelectric sensor is configured to be able to adjust the movement distance of the corresponding adjustment sub-component in the second direction according to the actual output voltage of each adjustment sub-component.
  • the piezoelectric sensor can flexibly adjust the flow area of the discharge port according to the actual output voltage in the coating device, and cooperate with the parameters of the actual surface density on the coated electrode to more comprehensively reflect the coating quality on the electrode, thereby improving the accuracy of the coating process regulation.
  • the coating device further includes a displacement sensor that is communicatively connected to the control component, the displacement sensor is connected to each adjusting sub-component, and is used to detect the movement distance of each adjusting sub-component in the second direction.
  • the present application provides a battery processing equipment, comprising the coating device as described above.
  • the control component can detect the actual surface density of the slurry coated on the electrode in real time, and then control the adjustment component according to the difference between the actual surface density and the target surface density, and adjust the flow area of the discharge port through the adjustment component, thereby adjusting the discharge amount of the slurry extruded from the discharge port, thereby changing the actual surface density of the slurry coated on the electrode to make it close to or reach the target surface density requirement; thus, the control component detects and feeds back the actual surface density of the coating in real time, and then automatically controls the adjustment component according to the difference between the actual surface density and the target surface density, thereby achieving the purpose of quickly and timely adjusting the flow area of the discharge port, which can make the adjustment of the discharge amount more timely and rapid, and by adjusting the difference between the actual surface density and the target surface density, it can improve the accuracy of the adjustment process and improve the coating quality and coating efficiency of the electrode.
  • FIG. 1 is a schematic structural diagram of a coating device according to one or more embodiments.
  • FIG. 2 is a partial enlarged view of point A in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of a coating device according to one or more embodiments.
  • first or second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as “first” or “second” may explicitly or implicitly include at least one of the features.
  • the meaning of “plurality” is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
  • an element is referred to as being “disposed on” another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be “connected to” another element, it may be directly connected to the other element or there may be an intermediate element at the same time.
  • a battery cell is the smallest unit that makes up a battery.
  • a battery is usually composed of multiple battery cells connected in series, in parallel, or in a mixed connection.
  • Mixed connection refers to multiple battery cells that are connected in both series and in parallel.
  • the positive electrode sheet and the negative electrode sheet are formed by coating a layer of active material on the electrode sheet.
  • the positive electrode sheet is formed by coating a layer of positive electrode active material on the electrode sheet, while the negative electrode sheet is formed by coating a layer of negative electrode active material on the electrode sheet.
  • the battery is charged and discharged by the reaction between the positive electrode active material layer and the negative electrode active material layer and the electrolyte in the shell. Therefore, the coating quality of the positive electrode active material layer or the negative electrode active material layer on the electrode sheet will directly affect the performance of the battery.
  • the coating quality of the active material layer on the electrode is usually adjusted by observing the coating state of the active material layer on the electrode and manually adjusting the discharge amount of the coating device.
  • the adjustment accuracy of the above adjustment method is poor.
  • it is difficult to timely adjust the subsequent The coating quality causes hysteresis in the adjustment process, thus affecting the coating quality and coating efficiency of the electrode.
  • the control component can detect the actual surface density of the slurry coated on the electrode in real time, and then control the adjustment component according to the difference between the actual surface density and the target surface density, and adjust the flow area of the discharge port through the adjustment component, thereby adjusting the discharge amount of the slurry extruded from the discharge port, thereby changing the actual surface density of the slurry coated on the electrode to make it close to or reach the target surface density.
  • control component detects and feeds back the actual surface density of the coating in real time, and then automatically controls the adjustment component according to the difference between the actual surface density and the target surface density, thereby achieving the purpose of quickly and timely adjusting the flow area of the discharge port, which can make the adjustment of the discharge amount more timely and rapid, and adjust the difference between the actual surface density and the target surface density, which can improve the accuracy of the adjustment process and improve the coating quality and coating efficiency of the electrode.
  • an embodiment of the present application provides a coating device 100 for coating a pole piece
  • the coating device 100 includes a coating die head 10, an adjustment component 20, and a control component (not shown in the figure).
  • the coating die head 10 has a discharge port 11, the adjustment component 20 is arranged on the coating die head 10, and the control component is connected to the adjustment component 20.
  • the control component is used to detect the actual surface density of the coating on the pole piece, and control the adjustment component 20 to adjust the flow area of the discharge port 11 according to the difference between the actual surface density and the target surface density.
  • the pole piece refers to a component that can provide support and coating base for the slurry, so that the slurry forms an active material layer thereon, thereby finally forming a positive pole piece or a negative pole piece.
  • the slurry coated on the pole piece can be a positive active material or a negative active material.
  • the coating die 10 refers to a structure that can hold the slurry and extrude the slurry onto the electrode through the discharge port 11.
  • the coating die 10 may include an upper die 12 and a lower die 13 that are spaced apart, and the discharge port 11 is formed between the upper die 12 and the lower die 13.
  • a receiving groove is provided on the surface of the lower die 13 facing the upper die 12, and the receiving groove is connected to the discharge port 11. The receiving groove can be used to hold the slurry so that the slurry can be smoothly extruded from the discharge port 11.
  • the adjustment component 20 is disposed on the upper die head 12 , and the adjustment component 20 can adjust the flow area of the discharge port 11 by adjusting the spacing distance between the upper die head 12 and the lower die head 13 , thereby adjusting the discharge amount of the slurry extruded from the discharge port 11 .
  • the flow area of the discharge port 11 refers to the area of the cross section of the discharge port 11 cut by a plane perpendicular to the opening direction of the discharge port 11. The larger the flow area of the discharge port 11, the greater the discharge amount of the slurry from the discharge port 11. Conversely, the smaller the flow area of the discharge port 11, the smaller the discharge amount of the slurry from the discharge port 11.
  • the control component refers to a component that can detect the actual surface density of the slurry coated on the electrode, compare the detected actual surface density with the target surface density preset inside itself to obtain the difference between the two, and control the adjustment component 20 according to the difference, thereby adjusting the flow area of the discharge port 11.
  • the surface density refers to the mass of active material slurry on the electrode per unit area.
  • the actual surface density is the actual mass of active material slurry coated on the electrode per unit area
  • the target surface density is the mass of active material slurry required on the electrode per unit area.
  • Theoretical mass of the applied active material slurry When the actual mass of the active material slurry applied on the electrode is equal to or close to the theoretical mass, the electrode can achieve a good coating quality.
  • the slurry is filled into the containing tank, and during the coating process, the slurry is squeezed out from the discharge port 11 and coated on the electrode.
  • the control component detects the slurry coated on the electrode in real time. When it is detected that the actual surface density coated on the electrode is lower than the target surface density, the control component controls the regulating component 20 to increase the flow area of the discharge port 11 and increase the discharge amount of the discharge port 11. When it is detected that the actual surface density coated on the electrode is higher than the target surface density, the control component controls the regulating component 20 to reduce the flow area of the discharge port 11 and reduce the discharge amount of the discharge port 11.
  • the coating quality of the slurry on the pole piece can be timely reflected by the real-time detection of the actual surface density coated on the pole piece by the control component.
  • the control component automatically controls the adjustment component 20 to adjust the flow area of the discharge port 11 according to the difference between the actual surface density and the target surface density, thereby more flexibly adjusting the discharge amount of the discharge port 11, so that the actual surface density coated on the pole piece meets the production requirements, thereby improving the coating quality and coating efficiency.
  • the adjustment component 20 includes an adjustment member 21 and a first drive member 22 that are drive-connected.
  • the adjustment member 21 is movably disposed on the coating die 10, and at least a portion of the adjustment member 21 is located in the discharge port 11.
  • the first drive member 22 is communicatively connected to the control component and is used to drive the adjustment member 21 to move in the discharge port 11 to adjust the flow area of the discharge port 11.
  • the adjusting member 21 is movably arranged on the upper die head 12, and the adjusting member 21 is penetrated from top to bottom in the upper die head 12, so that at least part of the adjusting member 21 is located in the discharge port 11.
  • the first driving member 22 is communicatively connected with the control component, and is drivingly connected with the adjusting member 21.
  • the first driving member 22 can drive the adjusting member 21 to move in the discharge port 11 under the control of the control component.
  • the discharge port 11 can be partially blocked, and the flow area of the discharge port 11 can be adjusted by the size of the area of the discharge port 11 blocked by the adjusting member 21.
  • the control component When the control component detects that the actual surface density coated on the electrode piece is lower than the target surface density, based on the difference between the two, the control component controls the first driving member 22 to drive the adjusting member 21 to move in the discharge port 11, so that the area of the discharge port 11 blocked by the adjusting member 21 is reduced. At this time, the flow area of the discharge port 11 is increased, the discharge amount of the discharge port 11 is increased, and the actual surface density of the coating on the electrode piece is increased.
  • the control component When the control component detects that the actual surface density coated on the electrode piece is higher than the target surface density, based on the difference between the two, the control component controls the first driving member 22 to drive the adjusting member 21 to move in the discharge port 11, so that the area of the discharge port 11 blocked by the adjusting member 21 increases. At this time, the flow area of the discharge port 11 decreases, the discharge amount of the discharge port 11 decreases, and the actual surface density coated on the electrode piece decreases.
  • the flow area of the discharge port 11 can be quickly adjusted, and the discharge amount of the discharge port 11 can be adjusted, thereby improving the coating quality of the electrode piece.
  • the discharge port 11 is longitudinally extended along the first direction a
  • the adjusting member 21 includes a plurality of adjusting sub-members 211 arranged along the first direction a, and each adjusting sub-member 211 is movably arranged in the discharge port 11 along the second direction b.
  • the first direction a, the second direction b, and the opening direction c of the discharge port 11 are arranged to intersect each other.
  • the electrode piece usually has a certain width.
  • the first direction a is set to the width direction of the electrode piece, that is, the discharge port 11 is extended longitudinally along the width direction of the electrode piece.
  • the extension length of the discharge port 11 matches the width of the electrode piece to be coated.
  • the electrode piece moves along its own length direction, and the discharge port 11 continuously extrude the slurry. As the electrode piece moves, the slurry is evenly coated on the electrode piece.
  • the first direction a, the second direction b and the opening direction c of the discharge port 11 are arranged perpendicular to each other.
  • the first direction a is the width direction of the electrode piece
  • the opening direction c of the discharge port 11 is the length direction of the electrode piece
  • the second direction b is the thickness direction of the electrode piece.
  • All the adjusting sub-components 211 are arranged on the upper die head 12 along the first direction a, and each adjusting sub-component 211 is movably arranged in the discharge port 11 along the second direction b.
  • all the adjusting sub-components 211 divide the discharge port 11 into a plurality of discharge sub-ports along the first direction a, and each adjusting sub-component 211 can adjust the flow area of the corresponding discharge sub-port by moving along the second direction b in the corresponding discharge sub-port, so that the actual surface density of the coating slurry at different positions of the electrode along its own width direction can be adjusted by each adjusting sub-component 211.
  • the pole piece can be divided into N regions in the width direction, and each region corresponds to a group of discharge sub-ports and regulating sub-components 211.
  • the control component detects that the actual surface density of the Mth (0 ⁇ M ⁇ N)th region on the pole piece is higher than the target surface density, according to the difference between the actual surface density and the target surface density, the control component controls the Mth regulating sub-component 211 to move downward by a certain distance, so that the regulating sub-component 211 blocks the Mth discharge sub-port, reduces the flow area of the corresponding discharge sub-port, reduces the discharge amount of the extruded slurry in the discharge sub-port, and thus reduces the actual surface density of the region.
  • each adjusting sub-component 211 may include an adjusting screw and an adjusting block connected to each other.
  • Each adjusting screw is vertically arranged on the upper die head 12, and the adjusting block is arranged at the lower end of the adjusting screw, and the adjusting block is located in the discharge port 11.
  • the first driving member 22 may be arranged as a driving cylinder, which is connected to the adjusting screw and can drive the adjusting screw to move up and down, thereby driving the adjusting block to move up and down in the discharge port 11, and then adjusting the flow area of the discharge port 11.
  • the discharge port 11 can be divided into different discharge sub-ports along the first direction a, and the flow area of the corresponding discharge sub-port can be adjusted by each adjusting sub-component 211, so that the slurry coating amount on the coating area corresponding to the discharge sub-port can be adjusted in a targeted manner. In this way, the coating quality on the electrode can be adjusted more accurately.
  • the coating device 100 further includes a moving assembly 30 disposed on the coating die head 10, the moving assembly 30 is connected to the first driving member 22, and is in communication with the control assembly.
  • the moving assembly 30 is used to drive the first driving member 22 to move along the first direction a, so that the first driving member 22 can drive each adjusting sub-member 211 to move along the second direction b.
  • the moving component 30 is disposed on the upper die head 12 and can move along the first direction a under the control of the control component, thereby driving the first driving member 22 to move in the first direction a, so that the first driving member 22 can be connected to the corresponding adjusting sub-component 211.
  • control component when the control component detects that the actual surface density of the Mth area on the pole piece is higher than the target surface density, the control component The control component first controls the moving component 30 to move in the first direction a, so that the moving component 30 drives the first driving component 22 to move in the first direction a to the position of the Mth adjusting sub-component 211.
  • the first driving component 22 is connected to the Mth adjusting sub-component 211, and the control component controls the first driving component 22 to drive the Mth adjusting sub-component 211 to move downward by a certain distance according to the difference between the actual surface density and the target surface density, so that the adjusting sub-component 211 blocks the Mth material discharging sub-port, reduces the flow area of the corresponding material discharging sub-port, reduces the discharge amount of the extruded slurry in the material discharging sub-port, and thus reduces the actual surface density of the Mth area.
  • the moving component 30 can drive the first driving member 22 to move flexibly in the first direction a, so that the first driving member 22 can be more accurately connected with the corresponding adjusting sub-component 211, thereby accurately adjusting the coating quality on the pole piece at the position corresponding to the adjusting sub-component 211.
  • a connector 221 is protrudingly provided on each adjusting sub-component 211 and one of the first driving component 22, and a slot 2111 is provided on each adjusting sub-component 211 and the other of the first driving component 22.
  • Each adjusting sub-component 211 and the first driving component 22 are plugged into each other through the connector 221 and the slot 2111.
  • the adjusting sub-component 211 when the adjusting sub-component 211 is set as an adjusting screw and the first driving component 22 is set as a driving cylinder, a slot 2111 is provided on the top surface of each adjusting screw, and a plug-in component 221 that matches the slot 2111 is protruded on the bottom surface of the driving cylinder.
  • the first driving component 22 moves to the position of the corresponding adjusting sub-component 211, the first driving component 22 moves downward, so that the plug-in component 221 is inserted into the slot 2111 of the corresponding adjusting sub-component 211, so that the first driving component 22 and the adjusting sub-component 211 are plug-connected.
  • the adjusting sub-component 211 can be driven by the first driving component 22 to move upward or downward, so as to adjust the flow area of the discharge sub-port corresponding to the adjusting sub-component 211.
  • a slot 2111 may be provided on the first driving member 22, and a plug-in component 221 that matches the slot 2111 may be provided on the adjusting sub-component 211.
  • the plug-in component 221 on the corresponding adjusting sub-component 211 is inserted into the slot 2111 of the first driving member 22, thereby achieving connection and matching between the first driving member 22 and the adjusting sub-component 211.
  • the first driving component 22 and different adjusting sub-components 211 can be quickly connected and separated, so that the different adjusting sub-components 211 can be driven by the first driving component 22 to move in the discharge port 11, and the flow area of the discharge port 11 at different positions in the first direction a can be more flexibly adjusted.
  • the moving assembly 30 includes a second driving member 31, a guide member 32 and a transmission member 33.
  • the guide member 32 is extended along the first direction a and is disposed on the coating die head 10.
  • the transmission member 33 is movably disposed on the guide member 32 along the first direction a and is respectively connected to the first driving member 22 and the second driving member 31.
  • the second driving member 31 is communicatively connected to the control assembly.
  • the transmission member 33 is configured to be able to drive the first driving member 22 to move along the first direction a under the drive of the second driving member 31.
  • the second driving member 31 may be, but is not limited to, configured as a driving motor
  • the guide member 32 may be, but is not limited to, configured as a guide rail or a guide groove
  • the transmission member 33 may be, but is not limited to, configured as a slider or a moving chain.
  • the second driving member 31 can drive the transmission member 33 to move along the first direction a under the guidance of the guide member 32, thereby driving the first driving member 22 to move in the first direction a, so that the first driving member 22 can be more It can be accurately and more flexibly moved to a position corresponding to the corresponding adjusting sub-component 211 , thereby being able to smoothly drive the adjusting sub-component 211 to move in the discharge port 11 .
  • control component includes a detection component and a control component that are communicatively connected.
  • the detection component is used to detect the actual surface density coated on the electrode, and the control component is used to receive the actual surface density and compare it with the target surface density to obtain a difference, so as to control the adjustment component 20 to adjust the flow area of the discharge port 11 according to the difference.
  • the detection component can be, but is not limited to, a scanning head, and is used to detect the actual surface density of the coated area on the pole piece, and feed back the detected actual surface density to the control component.
  • the target surface density is preset inside the control component, and the control component compares the actual surface density with the target surface density to obtain the difference between the two. According to the obtained difference, the control component can control the adjustment component 20 to perform corresponding operations so that the actual surface density can gradually approach the target surface density, or be equal to the target surface density.
  • the actual surface density of the coated area on the electrode can be detected in real time, and timely feedback can be given to the control component.
  • the control component can quickly compare the actual surface density with the target surface density, thereby timely controlling the adjustment component 20 to make corresponding operations, so that the actual surface density can gradually approach the target surface density, or be equal to the target surface density, thereby improving the coating quality and coating efficiency of the electrode.
  • the coating device 100 also includes a piezoelectric sensor (not shown in the figure) that is communicatively connected to the control component, the piezoelectric sensor is connected to each adjustment sub-component 211, and the piezoelectric sensor is configured to be able to adjust the movement distance of the corresponding adjustment sub-component 211 in the second direction b according to the actual output voltage of each adjustment sub-component 211.
  • a piezoelectric sensor (not shown in the figure) that is communicatively connected to the control component, the piezoelectric sensor is connected to each adjustment sub-component 211, and the piezoelectric sensor is configured to be able to adjust the movement distance of the corresponding adjustment sub-component 211 in the second direction b according to the actual output voltage of each adjustment sub-component 211.
  • the piezoelectric sensor may include a piezoelectric ceramic built into the coating device 100.
  • the piezoelectric ceramic when the actual output voltage of the adjusting sub-component 211 exceeds a preset range, the piezoelectric ceramic will form a certain deformation amount according to the voltage difference. Under the action of the deformation amount, the adjusting sub-component 211 moves a certain distance along the second direction b, thereby changing the flow area of the discharge sub-port corresponding to the adjusting sub-component 211.
  • the piezoelectric sensor can flexibly adjust the flow area of the discharge port 11 according to the actual output voltage in the coating device 100, and cooperate with the parameters of the actual surface density on the coated electrode to more comprehensively reflect the coating quality on the electrode, thereby improving the accuracy of the coating process adjustment.
  • the coating device 100 further includes a displacement sensor (not shown) that is communicatively connected to the control component.
  • the displacement sensor is connected to each adjusting sub-component 211 and is used to detect the movement distance of each adjusting sub-component 211 in the second direction b.
  • the displacement sensor can be used to measure the moving distance of each adjusting sub-component 211 in the second direction b.
  • the displacement sensor can be, but is not limited to, a potentiometer displacement sensor, an inductive displacement sensor, a capacitive displacement sensor, an eddy current displacement sensor, a Hall displacement sensor, etc.
  • the displacement sensor When each adjusting sub-component 211 moves once in the second direction b under the driving action of the first driving member 22, the displacement sensor records the distance moved by the adjusting sub-component 211.
  • the detection member detects the actual surface density of the area on the pole piece corresponding to the adjusting sub-component 211 in real time after the movement, and feeds it back to the control member.
  • the control member compares the actual surface density with the target surface density. The surface density is determined by the first driving member 22 and the second moving distance of the adjusting member 211 in the second direction b is recorded by the displacement sensor.
  • the control component can adjust the next moving distance of the first driving component 22 to drive the adjusting sub-component 211 in the second direction b according to the relationship between the two moving distances and the change in actual surface density after the two movements, thereby improving the adjustment accuracy.
  • the control member controls the first driving member 22 to drive the adjusting sub-member 211 to move upward a certain distance, and the displacement sensor records the distance as L1.
  • the detection member continues to detect that the actual surface density becomes X2 (X2 ⁇ Y), and the difference between the actual surface density and the target surface density is Y-X2.
  • the control member controls the first driving member 22 to drive the adjusting sub-member 211 to move upward a certain distance, and the displacement sensor records the distance as L2.
  • the change between L1 and L2 corresponds to the change between X1 and X2.
  • the detection component continues to detect that the actual surface density becomes X3 (X3 ⁇ Y), and the control component can adjust the moving distance of the adjustment subcomponent 211 accordingly according to the change between X3 and X2, thereby improving the adjustment accuracy and enabling the actual surface density to be adjusted to be close to or equal to the target surface density more quickly, thereby improving the adjustment efficiency.
  • the present application provides a battery processing equipment, including the above-mentioned coating device 100 .
  • the actual surface density of the coated area on the pole piece is first detected in real time by the detection member, and the actual surface density is fed back to the control member.
  • the control member controls the second driving member 31 to drive the first driving member 22 to move along the first direction a, so that the first driving member 22 moves to a position corresponding to the adjustment sub-member 211 that needs to be adjusted.
  • the control component controls the first driving component 22 to move downward and connect with the corresponding adjusting sub-component 211.
  • the control component compares the actual surface density with the target surface density and obtains the difference between the two. According to the difference, the control component controls the first driving component 22 to drive the adjusting sub-component 211 connected thereto to move in the second direction b, thereby adjusting the flow area of the corresponding discharge sub-port, adjusting the discharge amount of the discharge sub-port, and thus adjusting the actual surface density coated on the electrode at this position.
  • the piezoelectric sensor can sense the actual output voltage of the regulating sub-component 211.
  • the piezoelectric sensor can produce a certain deformation.
  • the regulating sub-component 211 moves in the second direction b to a certain extent, thereby further adjusting the flow area of the discharge port 11.
  • the displacement sensor records the moving distance of the adjusting sub-component 211 in the second direction b, and The moving distance is fed back to the control component, and the control component can adjust the moving distance of the adjusting subcomponent 211 in the subsequent adjustment process according to each moving distance and the change in actual surface density after each adjustment, thereby realizing closed-loop control of the adjustment process.

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  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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Abstract

一种涂布装置（100）及电池加工设备，涂布装置（100）包括：涂布模头（10），具有出料口（11）；调节组件（20），设置于涂布模头（10）上；以及控制组件，与所述调节组件（20）连接，控制组件用于检测极片上涂布的实际面密度，并根据实际面密度与目标面密度之间的差值控制调节组件（20）调节出料口（11）的过流面积。控制组件实时检测并且实时反馈涂布的实际面密度，然后根据实际面密度与目标面密度之间的差值自动控制调节组件（20），从而实现快速且及时的调节出料口（11）的过流面积的目的，能够使出料量的调节更加及时且迅速，并且通过实际面密度与目标面密度之间的差值进行调节，能够提高调节过程的准确性，提高极片的涂布质量及涂布效率。

Description

一种涂布装置及电池加工设备
交叉引用
本申请引用于2023年07月27日递交的名称为“一种涂布装置及电池加工设备”的第2023219871329号中国专利申请，其通过引用被全部并入本申请。
技术领域
本申请涉及电池技术领域，特别是涉及一种涂布装置及电池加工设备。
背景技术
在电池的生产过程中，极片的涂布工序是工艺设计和生产过程中的一项重要环节，涂布的质量对整个电池性能起到决定性作用。因此，在电池的生产制作过程中，提高涂布质量及涂布效率是至关重要的。
然而，目前在极片的涂布过程中，对于涂布装置的出料量的调节存在滞后性且调节的准确性较低，从而导致极片最终的涂布质量及涂布效率较低。
发明内容
基于此，有必要针对目前极片的涂布过程中，对涂布浆料出料量的调节准确性较低且调节存在滞后性的问题，提供一种涂布装置及电池加工设备。
第一方面，本申请提供一种涂布装置，用于涂布极片，涂布装置包括：
涂布模头，包括间隔设置的上模头与下模头，且上模头与下模头之间间隔形成出料口；
调节组件，设置于上模头上；以及
控制组件，与调节组件连接，控制组件用于检测极片上涂布的实际面密度，并根据实际面密度与目标面密度之间的差值控制调节组件调节出料口的过流面积；
其中，调节组件被配置为能够通过调节上模头与下模头之间的间隔距离，调节出料口的过流面积。
通过控制组件对极片上涂布的实际面密度的实时检测，能够及时反应极片上浆料的涂布质量。进一步地，控制组件根据实际面密度与目标面密度之间的差值自动控制调节组件调节出料口的过流面积，从而更灵活地调节出料口的出料量，使极片上涂布的实际面密度符合生产要求，从而提高涂布质量及涂布效率。
在一些实施例中，调节组件包括驱动连接的调节件与第一驱动件，调节件可移动地设置于涂布模头上，且调节件的至少部分位于出料口内，第一驱动件与控制组件通讯连接，并用于驱动调节件在出料口内移动以调节出料口的过流面积。
通过第一驱动件带动调节件在出料口内移动，可以快速调节出料口的过流面积，调节出料口的出料量，从而提高极片的涂布质量。
在一些实施例中，出料口沿第一方向纵长延伸设置，调节件包括沿第一方向排布的多个调节子件，每一调节子件沿第二方向可移动地设置于出料口内；
其中，第一方向、第二方向以及出料口的开口方向两两相交设置。
通过多个调节子件与出料口的配合，能够沿第一方向将出料口分为不同的出料子口，通过每个调节子件调节对应的出料子口的过流面积，能够针对性地调节该出料子口所对应的涂布区域上的浆料涂布量。由此，可以使极片上涂布质量的调节更加准确。
在一些实施例中，涂布装置还包括设置于涂布模头上的移动组件，移动组件与第一驱动件连接，并与控制组件通讯连接；
移动组件用于带动第一驱动件沿第一方向移动，以使第一驱动件能够驱动每一调节子件沿第二方向移动。
通过控制组件的控制，使移动组件能够带动第一驱动件在第一方向上灵活移动，使第一驱动件更准确地与对应的调节子件连接，从而准确调节该调节子件所对应位置的极片上的涂布质量。
在一些实施例中，每一调节子件与第一驱动件中的一者上凸出设置有插接件，每一调节子件与第一驱动件中的另一者上设置有插槽，每一调节子件与第一驱动件通过插接件及插槽实现插接配合。
通过插接件与插槽的配合，可以实现第一驱动件与不同的调节子件之间的快速连接及分离，从而通过第一驱动件带动不同的调节子件在出料口内移动，能够更加灵活地调节出料口在第一方向上不同位置的过流面积。
在一些实施例中，移动组件包括第二驱动件、导向件及传动件，导向件沿第一方向延伸设置于涂布模头上，传动件沿第一方向可移动地设置于导向件上，并分别与第一驱动件及第二驱动件连接，第二驱动件与控制组件通讯连接；
传动件被配置为能够在第二驱动件的驱动下，带动第一驱动件沿第一方向移动。
由此，第二驱动件能够在控制组件的控制下，带动传动件在导向件的引导作用下沿第一方向移动，从而带动第一驱动件在第一方向上移动，使第一驱动件能够更准确且更灵活地移动至与对应的调节子件所对应的位置，从而能够顺利带动该调节子件在出料口内移动。
在一些实施例中，控制组件包括通讯连接的检测件与控制件，检测件用于检测极片上涂布的实际面密度，控制件用于接收实际面密度并与目标面密度对比得到差值，以根据差值控制调节组件调节出料口的过流面积。
通过设置检测件与控制件，能够实时检测极片上已涂布区域的实际面密度，并且及时反馈至控制件，控制件能够迅速对比实际面密度与目标面密度，从而及时控制调节组件做出 相应的操作，使实际面密度能够逐渐接近目标面密度，或者与目标面密度相等，提高极片的涂布质量及涂布效率。
在一些实施例中，涂布装置还包括与控制件通讯连接的压电传感器，压电传感器与每一调节子件连接，且压电传感器被配置为能够根据各调节子件的实际输出电压调节对应的调节子件在第二方向上的移动距离。
压电传感器可以根据涂布装置中的实际输出电压灵活调节出料口的过流面积，与已涂布的极片上的实际面密度的参数相互配合，能够更全面地反应极片上的涂布质量，从而提高对涂布过程调节的准确性。
在一些实施例中，涂布装置还包括与控制件通讯连接的位移传感器，位移传感器与每一调节子件连接，并用于检测各调节子件在第二方向上的移动距离。
通过位移传感器对调节子件在第二方向上的移动距离的检测及反馈，能够结合实际面密度、调节子件的实际输出电压以及调节子件的实际移动距离，使得调节过程中能够实时进行反馈调整，实现调节组件的智能化闭环控制，能够有效提高涂布质量及涂布效率。
第二方面，本申请提供一种电池加工设备，包括如上所述的涂布装置。
上述涂布装置及电池加工设备，在涂布极片的过程中，控制组件能够实时检测涂布至极片上的浆料的实际面密度，然后根据实际面密度与目标面密度之间的差值控制调节组件，通过调节组件调节出料口的过流面积，从而调节出料口挤出浆料的出料量，从而改变涂布至极片上的浆料的实际面密度，使其接近或者达到目标面密度的要求；由此，控制组件实时检测并且实时反馈涂布的实际面密度，然后根据实际面密度与目标面密度之间的差值自动控制调节组件，从而实现快速且及时的调节出料口的过流面积的目的，能够使出料量的调节更加及时且迅速，并且通过实际面密度与目标面密度之间的差值进行调节，能够提高调节过程的准确性，提高极片的涂布质量及涂布效率。
附图说明
图1为根据一个或多个实施例的涂布装置的结构示意图。
图2为图1中A处的局部放大图。
图3为根据一个或多个实施例的涂布装置的结构示意图。
附图标记说明：100、涂布装置；10、涂布模头；20、调节组件；30、移动组件；11、出料口；12、上模头；13、下模头；21、调节件；22、第一驱动件；31、第二驱动件；32、导向件；33、传动件；211、调节子件；221、插接件；2111、插槽；a、第一方向；b、第二方向、c、开口方向。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图对本申请的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本申请。但是本申请能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本申请内涵的情况下做类似改进，因此本申请不受下面公开的具体实施例的限制。
在本申请的描述中，需要理解的是，若有出现这些术语“长度”、“宽度”、“厚度”等，这些术语指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，若有出现这些术语“第一”、“第二”，这些术语仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，若有出现术语“多个”，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
需要说明的是，若元件被称为“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。若一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。
目前，从市场形势的发展来看，动力电池的应用越加广泛。动力电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具以及其他领域。随着动力电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
电池单体是组成电池的最小单元，电池通常是由多个电池单体进行串联或并联或混联组成，其中，混联是指多个电池单体中既有串联又有并联。
电池单体可以包括顶盖、壳体以及电极组件，顶盖能够密封盖合于壳体的开口处，从而与壳体共同围合形成用于容纳电极组件的内部环境。电极组件是电池单体中发生电化学反应的部件，其主要由正极片和负极片经过卷绕或者层叠放置形成，并且通常在正极片与负极片之间设置隔膜。
其中，正极片及负极片是通过在极片上涂布一层活性物质层而形成的，正极片是在极片上涂布一层正极活性物质层，而负极片则是在极片上涂布一层负极活性物质层。
具体地，通过正极活性物质层和负极活性物质层与壳体中的电解液发生反应，来实现电池的充放电。因此，正极活性物质层或负极活性物质层在极片上的涂布质量将直接影响电池的使用性能。
然而，目前在极片涂布过程中，通常是通过观察极片上活性物质层的涂布状态，并通过人工调节涂布装置的出料量，来调节活性物质层在极片上的涂布质量。一方面，上述调节方式的调节准确性较差。另一方面，难以根据涂布装置挤出浆料的物性变化及时调节后续的 涂布质量，使得调节过程存在滞后性，从而影响极片的涂布质量及涂布效率。
为了解决目前极片涂布过程中，涂布装置的出料量的调节存在滞后性，并且出料量调节的准确性较低的问题，本申请的一个或多个实施例中提出了一种涂布装置，在涂布极片的过程中，控制组件能够实时检测涂布至极片上的浆料的实际面密度，然后根据实际面密度与目标面密度之间的差值控制调节组件，通过调节组件调节出料口的过流面积，从而调节出料口挤出浆料的出料量，从而改变涂布至极片上的浆料的实际面密度，使其接近或者达到目标面密度的要求。由此，控制组件实时检测并且实时反馈涂布的实际面密度，然后根据实际面密度与目标面密度之间的差值自动控制调节组件，从而实现快速且及时的调节出料口的过流面积的目的，能够使出料量的调节更加及时且迅速，并且通过实际面密度与目标面密度之间的差值进行调节，能够提高调节过程的准确性，提高极片的涂布质量及涂布效率。
参阅图1，本申请一实施例提供了一种涂布装置100，用于涂布极片，涂布装置100包括涂布模头10、调节组件20以及控制组件(图中未示出)。涂布模头10具有出料口11，调节组件20设置于涂布模头10上，控制组件与调节组件20连接。其中，控制组件用于检测极片上涂布的实际面密度，并根据实际面密度与目标面密度之间的差值控制调节组件20调节出料口11的过流面积。
需要说明的是，极片是指能够为浆料提供支撑及涂布基础，使得浆料在其上形成活性物质层，从而最终形成正极片或负极片的部件。其中，涂布于极片上的浆料可以是正极活性物质，也可以是负极活性物质。
涂布模头10是指能够容纳浆料，并且将浆料通过出料口11挤出至极片上的结构。其中，涂布模头10可以包括间隔设置的上模头12与下模头13，上模头12与下模头13之间间隔形成出料口11。并且下模头13朝向上模头12的一侧表面上开设有容纳槽，容纳槽与出料口11连通，容纳槽可以用于容纳浆料，以使浆料能够从出料口11顺利挤出。
进一步地，调节组件20设置于上模头12上，调节组件20能够通过调节上模头12与下模头13之间的间隔距离，实现调节出料口11的过流面积的目的，从而调节从出料口11挤出浆料的出料量。
其中，出料口11的过流面积是指出料口11被垂直于自身开口方向的平面所截的截面的面积。出料口11的过流面积越大，则出料口11浆料的出料量越大。反之，出料口11的过流面积越小，则出料口11浆料的出料量越小。
控制组件是指能够检测极片上涂布浆料的实际面密度，将检测得到的实际面密度与自身内部预置的目标面密度进行比较得到两者的差值，并根据差值控制调节组件20，从而调节出料口11的过流面积的部件。
可以理解地，面密度是指单位面积的极片上活性物质浆料的质量。实际面密度即为单位面积的极片上所涂布的活性物质浆料的实际质量，目标面密度则为单位面积的极片上需要 涂布的活性物质浆料的理论质量。当极片上涂布的活性物质浆料的实际质量等于或接近理论质量时，则极片能够达到较好的涂布质量。
具体地，浆料填充至容纳槽内，涂布过程中，浆料从出料口11挤出并涂布至极片上。控制组件实时检测涂布至极片上的浆料，当检测到极片上涂布的实际面密度低于目标面密度时，控制组件控制调节组件20增大出料口11的过流面积，提高出料口11的出料量。当检测到极片上涂布的实际面密度高于目标面密度时，控制组件控制调节组件20减小出料口11的过流面积，降低出料口11的出料量。
由此，通过控制组件对极片上涂布的实际面密度的实时检测，能够及时反应极片上浆料的涂布质量。进一步地，控制组件根据实际面密度与目标面密度之间的差值自动控制调节组件20调节出料口11的过流面积，从而更灵活地调节出料口11的出料量，使极片上涂布的实际面密度符合生产要求，从而提高涂布质量及涂布效率。
在一些实施例中，调节组件20包括驱动连接的调节件21与第一驱动件22，调节件21可移动地设置于涂布模头10上，且调节件21的至少部分位于出料口11内，第一驱动件22与控制组件通讯连接，并用于驱动调节件21在出料口11内移动以调节出料口11的过流面积。
具体地，调节件21可移动地设置于上模头12上，并且调节件21自上而下的穿设于上模头12，使调节件21的至少部分位于出料口11内。第一驱动件22与控制组件通讯连接，并且与调节件21驱动连接。第一驱动件22能够在控制组件的控制下，带动调节件21在出料口11内移动。调节件21在出料口11内移动的过程中，可以对出料口11进行部分遮挡，通过调节件21遮挡出料口11的面积大小，能够调节出料口11的过流面积。
当控制组件检测到极片上涂布的实际面密度低于目标面密度时，根据两者的差值，控制组件控制第一驱动件22带动调节件21在出料口11内移动，使调节件21遮挡出料口11的面积减小，此时出料口11的过流面积增大，出料口11的出料量增大，极片上涂布的实际面密度增大。
当控制组件检测到极片上涂布的实际面密度高于目标面密度时，根据两者的差值，控制组件控制第一驱动件22带动调节件21在出料口11内移动，使调节件21遮挡出料口11的面积增大，此时出料口11的过流面积减小，出料口11的出料量减小，极片上涂布的实际面密度减小。
由此，通过第一驱动件22带动调节件21在出料口11内移动，可以快速调节出料口11的过流面积，调节出料口11的出料量，从而提高极片的涂布质量。
在一些实施例中，出料口11沿第一方向a纵长延伸设置，调节件21包括沿第一方向a排布的多个调节子件211，每一调节子件211沿第二方向b可移动地设置于出料口11内。其中，第一方向a、第二方向b以及出料口11的开口方向c两两相交设置。
需要说明的是，极片通常具有一定宽度，在涂布极片时，为了能够更均匀地在极片上涂布浆料，将第一方向a设置为极片的宽度方向，即出料口11沿极片的宽度方向纵长延伸设置。涂布时，出料口11的延伸长度与待涂布的极片的宽度相匹配，极片沿自身长度方向移动，出料口11不断挤出浆料，随着极片的移动，浆料被均匀涂布至极片上。
具体地，第一方向a、第二方向b以及出料口11的开口方向c两两垂直设置。在涂布过程中，第一方向a为极片的宽度方向，出料口11的开口方向c为极片的长度方向，则第二方向b为极片的厚度方向。
全部调节子件211沿第一方向a设置于上模头12上，并且每一个调节子件211沿第二方向b可移动地设置于出料口11内。由此，全部调节子件211沿第一方向a将出料口11分隔为多个出料子口，每一个调节子件211可以通过在对应的出料子口中沿第二方向b移动，来调节对应的出料子口的过流面积，从而可以通过各调节子件211对应调节极片沿自身宽度方向上的不同位置的涂布浆料的实际面密度。
例如，当调节子件211的数量为N个时，可以将极片在宽度方向上分为N个区域，每一个区域对应一组出料子口及调节子件211。当控制组件检测到极片上第M(0≤M≤N)个区域的实际面密度高于目标面密度，根据实际面密度与目标面密度的差值，控制组件控制第M个调节子件211向下移动一定距离，使该调节子件211对第M个出料子口形成遮挡，减小对应出料子口的过流面积，使该出料子口中挤出浆料的出料量减小，从而降低该区域的实际面密度。
进一步地，每一个调节子件211可以包括相互连接的调节螺杆及调节块。各调节螺杆呈竖直状态设置于上模头12，调节块设置于调节螺杆的下端，并且调节块位于出料口11内。第一驱动件22可以设置为驱动气缸，驱动气缸与调节螺杆连接，并且能够带动调节螺杆上下移动，从而带动调节块在出料口11内上下移动，进而调节出料口11的过流面积。
通过多个调节子件211与出料口11的配合，能够沿第一方向a将出料口11分为不同的出料子口，通过每个调节子件211调节对应的出料子口的过流面积，能够针对性地调节该出料子口所对应的涂布区域上的浆料涂布量。由此，可以使极片上涂布质量的调节更加准确。
在一些实施例中，涂布装置100还包括设置于涂布模头10上的移动组件30，移动组件30与第一驱动件22连接，并与控制组件通讯连接。移动组件30用于带动第一驱动件22沿第一方向a移动，以使第一驱动件22能够驱动每一调节子件211沿第二方向b移动。
具体地，移动组件30设置于上模头12上，并且能够在控制组件的控制下，沿第一方向a移动，从而带动第一驱动件22在第一方向a上移动，使第一驱动件22能够与对应的调节子件211连接。
例如，当控制组件检测到极片上第M个区域的实际面密度高于目标面密度，控制组 件首先控制移动组件30在第一方向a上移动，使得移动组件30带动第一驱动件22在第一方向a上移动至第M个调节子件211的位置。然后，第一驱动件22与第M个调节子件211连接，控制组件根据实际面密度与目标面密度的差值，控制第一驱动件22带动第M个调节子件211向下移动一定距离，使该调节子件211对第M个出料子口形成遮挡，减小对应出料子口的过流面积，使该出料子口中挤出浆料的出料量减小，从而降低第M个区域的实际面密度。
由此，通过控制组件的控制，使移动组件30能够带动第一驱动件22在第一方向a上灵活移动，使第一驱动件22更准确地与对应的调节子件211连接，从而准确调节该调节子件211所对应位置的极片上的涂布质量。
请参看图1及图2，在一些实施例中，每一调节子件211与第一驱动件22中的一者上凸出设置有插接件221，每一调节子件211与第一驱动件22中的另一者上设置有插槽2111，每一调节子件211与第一驱动件22通过插接件221及插槽2111实现插接配合。
具体地，当调节子件211设置为调节螺杆，第一驱动件22设置为驱动气缸时，每一个调节螺杆上顶面上开设有插槽2111，驱动气缸的底面上凸出设置有与插槽2111配合的插接件221。当第一驱动件22移动至对应的调节子件211的位置时，第一驱动件22向下移动，使插接件221插入对应调节子件211的插槽2111内，从而使第一驱动件22与该调节子件211之间实现插接连接。此时，可以通过第一驱动件22带动该调节子件211向上或者向下移动，从而调节该调节子件211所对应的出料子口的过流面积。
可以理解地，也可以在第一驱动件22上开设插槽2111，并且在调节子件211上设置与插槽2111配合的插接件221。当第一驱动件22向下移动时，使对应调节子件211上的插接件221插入至第一驱动件22的插槽2111内，从而实现第一驱动件22与该调节子件211之间的连接配合。
通过插接件221与插槽2111的配合，可以实现第一驱动件22与不同的调节子件211之间的快速连接及分离，从而通过第一驱动件22带动不同的调节子件211在出料口11内移动，能够更加灵活地调节出料口11在第一方向a上不同位置的过流面积。
请一并参看图1及图3，在一些实施例中，移动组件30包括第二驱动件31、导向件32及传动件33，导向件32沿第一方向a延伸设置于涂布模头10上，传动件33沿第一方向a可移动地设置于导向件32上，并分别与第一驱动件22及第二驱动件31连接，第二驱动件31与控制组件通讯连接。传动件33被配置为能够在第二驱动件31的驱动下，带动第一驱动件22沿第一方向a移动。
具体地，第二驱动件31可以但不限于设置为驱动电机，导向件32可以但不限于设置为导轨或导向槽，传动件33可以但不限于设置为滑块或移动链条。
第二驱动件31能够在控制组件的控制下，带动传动件33在导向件32的引导作用下沿第一方向a移动，从而带动第一驱动件22在第一方向a上移动，使第一驱动件22能够更 准确且更灵活地移动至与对应的调节子件211所对应的位置，从而能够顺利带动该调节子件211在出料口11内移动。
在一些实施例中，控制组件包括通讯连接的检测件与控制件，检测件用于检测极片上涂布的实际面密度，控制件用于接收实际面密度并与目标面密度对比得到差值，以根据差值控制调节组件20调节出料口11的过流面积。
检测件可以但不限于设置为扫描头，检测件用于检测极片上已涂布的区域的实际面密度，并将检测到的实际面密度反馈至控制件。目标面密度预置于控制件内部，控制件将实际面密度与目标面密度进行对比，从而得到两者的差值。根据所得到的差值，控制件可以控制调节组件20执行相应的操作，使实际面密度能够逐渐接近目标面密度，或者与目标面密度相等。
通过设置检测件与控制件，能够实时检测极片上已涂布区域的实际面密度，并且及时反馈至控制件，控制件能够迅速对比实际面密度与目标面密度，从而及时控制调节组件20做出相应的操作，使实际面密度能够逐渐接近目标面密度，或者与目标面密度相等，提高极片的涂布质量及涂布效率。
在一些实施例中，涂布装置100还包括与控制件通讯连接的压电传感器(图中未示出)，压电传感器与每一调节子件211连接，且压电传感器被配置为能够根据各调节子件211的实际输出电压调节对应的调节子件211在第二方向b上的移动距离。
具体地，压电传感器可以包括内置于涂布装置100的压电陶瓷，根据压电陶瓷的特性，当调节子件211的实际输出电压超出预设范围时，压电陶瓷会根据电压差形成一定的形变量，调节子件211在该形变量的作用下沿第二方向b移动一定距离，从而改变该调节子件211所对应的出料子口的过流面积。
压电传感器可以根据涂布装置100中的实际输出电压灵活调节出料口11的过流面积，与已涂布的极片上的实际面密度的参数相互配合，能够更全面地反应极片上的涂布质量，从而提高对涂布过程调节的准确性。
在一些实施例中，涂布装置100还包括与控制件通讯连接的位移传感器(图中未示出)，位移传感器与每一调节子件211连接，并用于检测各调节子件211在第二方向b上的移动距离。
具体地，位移传感器能够用于测量每一个调节子件211在第二方向b上的移动距离。可以理解地，位移传感器可以但不限于采用电位器式位移传感器、电感式位移传感器、电容式位移传感器、电涡流式位移传感器、霍尔式位移传感器等。
当各调节子件211在第一驱动件22的驱动作用下在第二方向b上发生一次移动时，位移传感器记录调节子件211该次移动的距离。检测件实时检测移动之后，该调节子件211所对应的极片上的区域的实际面密度，并将其反馈至控制件。控制件比较实际面密度与目标 面密度，并根据两者的差值控制第一驱动件22带动调节子件211在第二方向b上发生第二次移动，位移传感器记录调节子件211第二次移动的距离。
当位移传感器将两次移动距离均反馈至控制件之后，控制件可以根据两次移动距离以及两次移动之后的实际面密度的变化量之间的关系，调整下一次第一驱动件22带动调节子件211在第二方向b上的移动距离，从而提高调节精度。
例如，若目标面密度为Y，检测件第一次检测实际面密度为X1(X1＜Y)，则实际面密度与目标面密度的差值为Y-X1。此时，控制件控制第一驱动件22带动调节子件211向上移动一定距离，位移传感器记录该距离为L1。
第一次移动之后，检测件继续检测实际面密度变为X2(X2＜Y)，则实际面密度与目标面密度的差值为Y-X2。此时，控制件控制第一驱动件22带动调节子件211向上移动一定距离，位移传感器记录该距离为L2。
此时，L1与L2之间的变化量与X1与X2之间的变化量相对应。则在第二次移动之后，检测件继续检测实际面密度变为X3(X3＜Y)，控制件可以根据X3与X2之间的变化量，相应地调整调节子件211的移动距离，提高调节精度，使实际面密度能够更快地调节至接近或者等于目标面密度，从而提高调节效率。
通过位移传感器对调节子件211在第二方向b上的移动距离的检测及反馈，能够结合实际面密度、调节子件211的实际输出电压以及调节子件211的实际移动距离，使得调节过程中能够实时进行反馈调整，实现调节组件20的智能化闭环控制，能够有效提高涂布质量及涂布效率。
基于与上述涂布装置100相同的构思，本申请提供一种电池加工设备，包括如上所述的涂布装置100。
根据一个或多个实施例，在极片的涂布过程中，首先通过检测件对极片上已涂布区域的实际面密度进行实时检测，并将实际面密度反馈至控制件。控制件控制第二驱动件31带动第一驱动件22沿第一方向a移动，使第一驱动件22移动至与需要调节的调节子件211对应的位置。
控制件控制第一驱动件22向下移动并与对应的调节子件211连接，控制件比较实际面密度与目标面密度并得到两者的差值，根据差值控制第一驱动件22带动与之连接的调节子件211在第二方向b上移动，从而调节对应出料子口的过流面积，调节该出料子口的出料量，从而调节该位置极片上涂布的实际面密度。
与此同时，压电传感器能够感应调节子件211的实际输出电压，当实际输出电压超出预设范围时，压电传感器能够产生一定的形变量，调节子件211在该形变量的影响下在第二方向b上发生一定的移动，从而进一步调节出料口11的过流面积。
进一步地，位移传感器记录调节子件211在第二方向b上的移动距离，并将每一次的 移动距离反馈至控制件，控制件可以根据每一次的移动距离以及每一次调节之后的实际面密度的变化量，调整调节子件211在后续调节过程中的移动距离，从而实现调节过程的闭环控制。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种涂布装置，用于涂布极片，所述涂布装置包括：
    涂布模头，包括间隔设置的上模头与下模头，且所述上模头与所述下模头之间间隔形成出料口；
    调节组件，设置于所述上模头上；以及
    控制组件，与所述调节组件连接，所述控制组件用于检测所述极片上涂布的实际面密度，并根据所述实际面密度与目标面密度之间的差值控制所述调节组件调节所述出料口的过流面积；
    其中，所述调节组件被配置为能够通过调节所述上模头与所述下模头之间的间隔距离，调节所述出料口的过流面积。
  2. 根据权利要求1所述的涂布装置，其中，所述调节组件包括驱动连接的调节件与第一驱动件，所述调节件可移动地设置于所述涂布模头上，且所述调节件的至少部分位于所述出料口内，所述第一驱动件与所述控制组件通讯连接，并用于驱动所述调节件在所述出料口内移动以调节所述出料口的过流面积。
  3. 根据权利要求2所述的涂布装置，其中，所述出料口沿第一方向纵长延伸设置，所述调节件包括沿所述第一方向排布的多个调节子件，每一所述调节子件沿第二方向可移动地设置于所述出料口内；
    其中，所述第一方向、所述第二方向以及所述出料口的开口方向两两相交设置。
  4. 根据权利要求3所述的涂布装置，其中，所述涂布装置还包括设置于所述涂布模头上的移动组件，所述移动组件与所述第一驱动件连接，并与所述控制组件通讯连接；
    所述移动组件用于带动所述第一驱动件沿所述第一方向移动，以使所述第一驱动件能够驱动每一所述调节子件沿所述第二方向移动。
  5. 根据权利要求4所述的涂布装置，其中，每一所述调节子件与所述第一驱动件中的一者上凸出设置有插接件，每一所述调节子件与所述第一驱动件中的另一者上设置有插槽，每一所述调节子件与所述第一驱动件通过所述插接件及所述插槽实现插接配合。
  6. 根据权利要求4或5所述的涂布装置，其中，所述移动组件包括第二驱动件、导向件及传动件，所述导向件沿所述第一方向延伸设置于所述涂布模头上，所述传动件沿所述第一方向可移动地设置于所述导向件上，并分别与所述第一驱动件及所述第二驱动件连接，所述第二驱动件与所述控制组件通讯连接；
    所述传动件被配置为能够在所述第二驱动件的驱动下，带动所述第一驱动件沿所述第一方向移动。
  7. 根据权利要求4-6任一项所述的涂布装置，其中，所述控制组件包括通讯连接的检测 件与控制件，所述检测件用于检测所述极片上涂布的所述实际面密度，所述控制件用于接收所述实际面密度并与所述目标面密度对比得到差值，以根据所述差值控制所述调节组件调节所述出料口的过流面积。
  8. 根据权利要求7所述的涂布装置，其中，所述涂布装置还包括与所述控制件通讯连接的压电传感器，所述压电传感器与每一所述调节子件连接，且所述压电传感器被配置为能够根据各所述调节子件的实际输出电压调节对应的所述调节子件在所述第二方向上的移动距离。
  9. 根据权利要求8所述的涂布装置，其中，所述涂布装置还包括与所述控制件通讯连接的位移传感器，所述位移传感器与每一所述调节子件连接，并用于检测各所述调节子件在所述第二方向上的移动距离。
  10. 一种电池加工设备，包括如权利要求1-9任一项所述的涂布装置。
PCT/CN2023/138536 2023-07-27 2023-12-13 一种涂布装置及电池加工设备 Pending WO2025020431A1 (zh)

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