CN111001532A - Automatic coating control system and control method thereof - Google Patents
Automatic coating control system and control method thereof Download PDFInfo
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- CN111001532A CN111001532A CN201911154156.4A CN201911154156A CN111001532A CN 111001532 A CN111001532 A CN 111001532A CN 201911154156 A CN201911154156 A CN 201911154156A CN 111001532 A CN111001532 A CN 111001532A
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- 238000000576 coating method Methods 0.000 title claims abstract description 132
- 239000011248 coating agent Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 161
- 238000001035 drying Methods 0.000 claims abstract description 83
- 239000000758 substrate Substances 0.000 claims abstract description 70
- 238000001125 extrusion Methods 0.000 claims description 74
- 238000004364 calculation method Methods 0.000 claims description 40
- 238000007581 slurry coating method Methods 0.000 claims description 12
- 230000000750 progressive effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 239000006255 coating slurry Substances 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000011267 electrode slurry Substances 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- 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
- B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
- B05C5/0275—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve
- B05C5/0279—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve independently, e.g. individually, flow controlled
-
- 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
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- 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
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The application provides a coating automatic control system and a control method thereof, wherein the system comprises: the coating device comprises a coating base material, a coating machine, a first drying box, a control device, a first surface density instrument and a second surface density instrument; the coated substrate comprises a coated first side and a coated second side; the coater is configured to apply slurry to the coated substrate; the first drying oven is configured to dry the coated first side; the control device is configured to receive a communication signal and control the coating machine according to the communication signal; the first areal densitometer is configured to detect a first areal slurry wet film areal density prior to the coated first face entering the first drying box and to transmit the first areal slurry wet film areal density to a control device; the second surface densitometer is configured to detect a dry film surface density of the first surface slurry after the coated first surface is dried by the first drying oven, and to transmit the dry film surface density of the first surface slurry to a control device.
Description
Technical Field
The application relates to the field of lithium battery slurry coating, in particular to an automatic coating control system and a control method thereof.
Background
In the batch production process of lithium batteries, in order to improve the production efficiency, a high-speed extrusion coating machine is usually adopted for coating slurry, an areal density instrument is used for detecting the areal density of a dried coating pole piece, the detected areal density data is fed back to a screw pump, and the longitudinal areal density of the coating is adjusted by adjusting the pump speed of the screw pump so as to ensure the consistency of the longitudinal areal density of the coating. However, the oven of the common coating machine is long, and the surface density data of the dried coated pole pieces detected by the surface density instrument is fed back to the screw pump, so that the hysteresis problem exists, the coated pole pieces are scrapped in batches when abnormality occurs, and the production waste and the efficiency are reduced; meanwhile, the surface density meter feeds back the detected longitudinal surface density data of the coating pole piece to the screw pump, only the longitudinal surface density adjustment of the coating can be realized, and the transverse surface density cannot be adjusted.
In order to solve the technical problems of data feedback lag and incapability of adjusting transverse areal density, a new coating automatic control system and a control method of the new coating automatic control system need to be designed.
Disclosure of Invention
The technical problem that this application technical scheme will solve is the unable problem of adjusting of data feedback lag and horizontal areal density in battery thick liquids coating process.
In order to solve the technical problem, the application provides an automatic coating control system and a control method of the automatic coating control system. The method comprises the steps of detecting the density of a slurry wet film surface before drying the coating slurry on the coating surface and the density of a dried slurry dry film surface after drying in real time, comparing, analyzing and calculating the density of the slurry wet film surface and the density of the slurry dry film surface through a control device, and controlling the pump speed of a screw pump of a coating machine and the opening and closing size of an extrusion head opening in real time according to the calculation result, so that the longitudinal surface density and the transverse surface density of the slurry coating are controlled, and the consistency of the surface densities is ensured. The control device controls the coating machine in real time according to the wet film surface density of the slurry, and the problem of feedback lag of detection data is solved.
The coating automatic control system comprises: the coating device comprises a coating base material, a coating machine, a first drying box, a control device, a first surface density instrument and a second surface density instrument, wherein the coating base material comprises a first coating surface and a second coating surface; the coater is configured to apply slurry to the coated substrate, the coater comprising: the device comprises a driving device, a first extrusion head and a first screw pump; the driving device is configured to drive the coated substrate to move along a preset direction; the first extrusion head is configured to apply a slurry to the coated first face, the first extrusion head including a first opening; the first progressive cavity pump is connected with the first extrusion head and is configured to provide the slurry to the first extrusion head; the first drying oven configured to dry the coated first face, the first drying oven comprising: a first inlet and a first outlet; the control device is configured to receive a communication signal and control the coating machine according to the communication signal; the first areal densitometer is mounted outside the first inlet of the first drying box and is configured to detect a first areal slurry wet film areal density prior to the coated first face entering the first drying box and to transmit the first areal slurry wet film areal density to a control device; the second surface densitometer is installed outside the first outlet of the first drying box, and is configured to detect a dry film surface density of the first surface slurry of the coated first surface dried by the first drying box, and transmit the dry film surface density of the first surface slurry to a control device.
In some embodiments, the coating automation system further comprises a third face densitometer, mounted before the first extrusion head, configured to detect the areal density of the coated substrate and transmit the areal density of the coated substrate to the control device.
In some embodiments, the control device controls the pump speed of the first screw pump via the communication signal to control the longitudinal areal density of the slurry application of the coated first side.
In some embodiments, the control device controls the opening and closing size of the first opening of the first extrusion head through the communication signal to control the lateral areal density of the slurry application of the coated first face.
In some embodiments, the coater further comprises: a second extrusion head configured to apply a slurry to the coated second face, the second extrusion head including a second opening; the second progressive cavity pump is coupled to the second extrusion head and is configured to provide the slurry to the second extrusion head.
In some embodiments, the coating automation control system further comprises: a second drying oven, wherein the second drying oven is configured to dry the coated second face, a fourth face densitometer, and a fifth face densitometer, wherein the second drying oven comprises a second inlet and a second outlet; the fourth densitometer mounted outside the second inlet of the second drying box, configured to detect a wet film area density of a second facer slurry prior to the coated second facer entering the second drying box, and to transmit the wet film area density of the second facer slurry to a control device; the fifth surface densitometer is mounted outside the second outlet of the second drying oven and is configured to detect a dry film surface density of the second facer slurry after the coated second facer has been dried by the second drying oven and to transmit the dry film surface density of the second facer slurry to a control device.
In some embodiments, the control device controls the pump speed of the second screw pump via the communication signal to control the longitudinal areal density of the application of the slurry coating of the coated second side.
In some embodiments, the control device controls the opening and closing size of the second opening of the second extrusion head through the communication signal to control the lateral areal density of the slurry application of the coated second face.
The application provides a control method of an automatic coating control system, which comprises the following steps: driving a coating substrate to move along a preset direction, wherein the coating substrate comprises a first coating surface and a second coating surface; driving a coating machine to coat the first coating surface with slurry; driving at least one surface density meter to detect the wet film surface density of the first surface slurry before the coated first surface enters a first drying box, and transmitting the wet film surface density of the first surface slurry to a control device; driving at least one surface density meter to detect the surface density of a first surface slurry dry film after the first coated surface is dried by a first drying box, and transmitting the surface density of the first surface slurry dry film to the control device; the control device calculates and analyzes the wet film surface density of the first surface slurry and the dry film surface density of the first surface slurry to obtain a first surface calculation result; and the control device adjusts the coating machine according to the first surface calculation result.
In some embodiments, the controlling means adjusting the coater according to the first surface calculation result includes: and the control device adjusts the pump speed of a first screw pump of the coating machine according to the first surface calculation result so as to adjust the longitudinal surface density of the slurry coating on the first surface.
In some embodiments, the controlling means adjusting the coater according to the first surface calculation result includes: and the control device adjusts the opening and closing size of a first opening of a first extrusion head of the coating machine according to the calculation result of the first surface so as to adjust the transverse surface density of the slurry coating on the first surface to be coated.
In some embodiments, the control method of the coating automatic control system further includes: driving at least one areal density meter to detect the areal density of the coated substrate and transmit the areal density of the coated substrate to the control device; the control device adjusts the coating machine according to the surface density of the coating substrate.
In some embodiments, the control method of the coating automatic control system further includes: driving a coating machine to coat the coating second surface with slurry; driving at least one areal densitometer to detect a wet film areal density of the second facer slurry prior to the coated second facer entering the second drying oven, and to transmit the wet film areal density of the second facer slurry to the control device; driving at least one surface density meter to detect the surface density of a second surface slurry dry film of the coated second surface dried by a second drying box, and transmitting the surface density of the second surface slurry dry film to the control device; the control device calculates and analyzes the wet film surface density of the second face slurry and the dry film surface density of the second face slurry to obtain a second face calculation result; the control device adjusts the coater according to the second surface calculation result.
In some embodiments, the controlling means adjusting the coater according to the second face calculation result includes: the control device adjusts the pump speed of a second screw pump of the coater according to the second face calculation result to adjust the longitudinal areal density of the slurry application of the coated second face.
In some embodiments, the controlling means adjusting the coater according to the second face calculation result includes: and the control device adjusts the opening and closing size of a second opening of a second extrusion head of the coating machine according to the calculation result of the second surface so as to adjust the transverse surface density of the slurry coating of the second surface.
According to the technical scheme, the automatic coating control system provided by the invention has the advantages that the slurry wet film surface density before the drying of the coating surface coating slurry and the slurry dry film surface density after the drying are detected in real time, the slurry wet film surface density and the slurry dry film surface density are compared, analyzed and calculated through the control device, the coating machine is controlled in real time according to the calculation result, and the problem of feedback lag of the detection data is solved; the longitudinal surface density and the transverse surface density of slurry coating are controlled by controlling the pump speed of a screw pump of the coating machine and the opening and closing size of an extrusion head opening, so that the consistency of the surface density is ensured; and meanwhile, the surface density of the coating base material can be detected, and the pump speed of a screw pump of the coating machine and the opening and closing size of an extrusion head are controlled in real time through the control device, so that the consistency of the surface density of the coating slurry is ensured when the surface density of the coating base material is inconsistent.
Other functions of the present application will be partially set forth in the following description. The contents of the following figures and examples will be apparent to those of ordinary skill in the art in view of this description. The inventive aspects of this application can be fully explained by the practice or use of the methods, apparatus and combinations described in the detailed examples below.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1a is a schematic structural diagram of an automatic coating control system according to an embodiment of the present disclosure;
FIG. 1b is a partial schematic view in the direction A of the coated substrate of FIG. 1 a; and
fig. 2 is a flowchart of a control method of an automatic coating control system according to an embodiment of the present disclosure.
Detailed Description
The following description is presented to enable any person skilled in the art to make and use the present disclosure, and is provided in the context of a particular application and its requirements. Various local modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is not to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.
The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. For example, as used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," and/or "including," when used in this specification, are intended to specify the presence of stated integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The term "A on B" as used in this specification means that A is either directly adjacent (above or below) B or indirectly adjacent (i.e., separated by some material) to B; the term "A within B" means that A is either entirely within B or partially within B.
These and other features of the present disclosure, as well as the operation and function of the related elements of the structure, and the combination of parts and economies of manufacture, may be particularly improved upon in view of the following description. All of which form a part of the present disclosure, with reference to the accompanying drawings. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the disclosure. It should also be understood that the drawings are not drawn to scale.
Fig. 1a is a schematic structural diagram of an automatic coating control system 100 according to an embodiment of the present disclosure. FIG. 1b is a partial schematic view of the coated substrate 110 of FIG. 1a in the direction A. The automatic coating control system 100 can be applied to the production of surface coating processes such as base films, paper and the like, and can also be applied to the coating of positive and negative electrode slurry of lithium batteries, and the like. Purely for the sake of demonstration, the following description of the present application is given by way of example of an automatic control system for the application of positive and negative electrode pastes for lithium batteries.
As shown in fig. 1a, the coating automatic control system 100 may include: the coating apparatus includes a coating substrate 110, a coater 120, a first drying oven 130, a control device 150, a first surface density meter 161, and a second surface density meter 163.
Coated substrate 110 can include a coated first side 111 and a coated second side 112, which can be configured as a substrate to which the slurry is applied. The slurry may be applied to the first coating surface 111 or the second coating surface 112, or may be applied to both the first coating surface 111 and the second coating surface 112.
The coater 120 may be configured to apply the slurry to the coated substrate 110, and the coater 120 may include: a drive 121, a first extrusion head 123 and a first screw pump 124.
The driving device 121 may provide power to the coater 120. The driving device 121 may be configured to drive the coating substrate 110 to move in a preset direction. Fig. 1a shows a series of arrows along the direction of movement of the coated substrate 110. The direction of the arrow is the preset direction. For convenience of description, it is necessary in the following description of the present application to define the orientations of "front", "rear", "longitudinal", and "lateral". As shown in fig. 1a, the coated substrate 110 moves along the predetermined direction, and the direction of the arrow is "rear" and the opposite direction of the arrow is "front" in the present application. A viewing direction a is also indicated by an arrow in fig. 1 a. FIG. 1b is a partial schematic view of the coated substrate 110 of FIG. 1a in the A direction. As shown in fig. 1b, the x direction is the predetermined direction when the coating substrate 110 moves, and the x direction is a longitudinal direction and the y direction perpendicular to the x direction is a transverse direction.
The first extrusion head 123 may apply the slurry to the first application face 111. The first extrusion head 123 may include a first opening 1231 through which the slurry is extruded to coat the first face 111. The size of the first opening 1231 can be adjusted, and the lateral surface density of the slurry applied by the first extrusion head 123 can be adjusted by adjusting the size of the first opening 1231.
The first screw pump 124 may be directly or indirectly connected to the first extrusion head 123, and the first screw pump 124 may be configured to provide the slurry to the first extrusion head 123. The pump speed of the first screw pump 124 may be adjusted and the speed at which the first extrusion head 123 extrudes the slurry may be adjusted by adjusting the pump speed of the first screw pump 124, thereby adjusting the longitudinal areal density at which the first extrusion head 123 applies the slurry.
When the driving device 121 drives the coating substrate 110 to move along the predetermined direction, the coating substrate 110 passes through the first extrusion head 123, and the first screw pump 124 extrudes the slurry into the first extrusion head 123, and the slurry is coated on the coating first surface 111 of the coating substrate 110 through the first opening 1231 of the first extrusion head 123.
The first drying box 130 may dry the coated first side 111. A first drying box 130 may be installed at the rear of the first extrusion head 123. The first drying compartment 130 may include a first inlet 131 and a first outlet 132. The first outlet 132 is rearward of the first inlet 131. When the driving device 121 drives the coating substrate 110 to move along the predetermined direction, the coating substrate 110 first passes through the first extrusion head 123, and the slurry is coated on the coating first surface 111 of the coating substrate 110; while the coated substrate 110 continues to move along the predetermined direction, the coated substrate 110 may pass through the first inlet 131 of the first drying box 130 to dry the slurry on the coated first side 111; the coated substrate 110 then continues to move in the predetermined direction through the first outlet 132.
The control device 150 may be configured to receive communication signals from other components of the coater 120 and to exert control over the coater 120 in accordance with the communication signals. The control device 150 may be preset with a standard areal density range. The control unit 150 may control the pump speed of the first screw pump 124 of the coater 120 and the speed at which the first extrusion head 123 extrudes the slurry by the communication signal, thereby controlling the longitudinal areal density of the slurry application on the first face 111. The control device 150 can control the opening and closing size of the first opening 1231 of the first extrusion head 123 of the coater 120 through the communication signal, thereby controlling the lateral areal density of the slurry application on the first face 111.
The first areal density meter 161 may be installed outside the first inlet 131 of the first drying compartment 130, or the first areal density meter 161 may be installed in front of the first inlet 131 of the first drying compartment 130. The first areal density meter 161 can detect a first areal slurry wet film areal density of the coated first face 111 prior to entering the first inlet 131 of the first drying box 130 and transmit the first areal slurry wet film areal density to the control device 150.
Second areal density meter 163 may be mounted outside first outlet 132 of first drying box 130, or second areal density meter 163 may be mounted behind first outlet 132 of first drying box 130. The second areal density meter 163 can be configured to detect the areal density of the first areal slurry dry film after the coated first face 111 has been dried by the first drying oven 130, and to transmit the first areal slurry dry film areal density to the control device 150.
When the driving device 121 drives the coating substrate 110 to move along the predetermined direction, the coating substrate 110 passes through the first extrusion head 123, and the first screw pump 124 provides the slurry to the first extrusion head 123, and the slurry is extruded onto the coating first surface 111 through the first opening 1231 of the first extrusion head 123. The coated substrate 110 continuously moves along the preset direction and passes through the first surface density meter 161, the first surface density meter 161 detects the wet film surface density of the first surface slurry before the coated first surface 111 enters the first drying box 130 in real time, and transmits the wet film surface density of the first surface slurry to the control device 150. As the coated substrate 110 continues to move in the predetermined direction, the coated substrate 110 passes through the first inlet 131 of the first drying box 130, and the first drying box 130 dries the slurry coated on the first side 111. The coated substrate 110 then passes through the first outlet 132 of the first drying box 130 and moves continuously along the predetermined direction, and passes through the second surface density meter 163, and the second surface density meter 163 detects the surface density of the first surface dry film slurry of the coated first surface 111 dried by the first drying box 130 in real time, and transmits the surface density of the first surface dry film slurry to the control device 150. The control device 150 calculates and analyzes the wet film surface density of the first surface slurry and the dry film surface density of the first surface slurry to obtain a first surface calculation result. The control device 150 controls the coater 120 by comparing the first surface calculation result with the standard surface density range. For example, the control device 150 controls the pump speed of the first screw pump 124 of the coater 120 through the communication signal, thereby controlling the longitudinal areal density of the slurry application coating the first side 111; the control device 150 controls the opening and closing size of the first opening 1231 of the first extrusion head 123 of the coater 120 through the communication signal, thereby controlling the lateral areal density of the slurry application to the first face 111. By the above control operation, the consistency of the density of the coated surface of the slurry coated on the first surface 111 is ensured.
In summary, the control device 150 adjusts the coater 120 in real time according to the wet film surface density of the first slurry, so as to solve the problem of feedback lag of the detection data; the control device 150 controls the opening and closing size of the first opening 1231 of the first surface extrusion head 123, so that the problem that the transverse surface density cannot be adjusted is solved.
In some embodiments, the coating automation system 100 may further include a third facet density meter 165. As shown in fig. 1a, a third densitometer 165 may be mounted in front of the first extrusion head 123. The third densitometer 165 may detect the areal density of the coated substrate 110 in real time and transmit the areal density of the coated substrate 110 to the control device 150. The control device 150 controls the first screw pump 124 and the first extrusion head 123 of the coater 120 in real time according to the detection result of the areal density of the coated substrate 110, so as to control the longitudinal areal density uniformity and the transverse areal density uniformity of the slurry coating, thereby ensuring that the areal density of the slurry coating can be consistent when the areal density of the coated substrate 110 is not consistent.
In some embodiments, the coater 120 may further include: a second extrusion head 126 and a second screw pump 127, as shown in fig. 1 a. The second extrusion head 126 may apply the slurry to the coated second side 112. The second extrusion head 126 may include a second opening 1261 through which the slurry is extruded 1261 to coat the second face 112. The size of the second opening 1261 is adjustable, and the lateral areal density of the slurry applied by the second extrusion head 126 can be adjusted by adjusting the size of the second opening 1261. The second screw pump 127 may be connected directly or indirectly to the second extrusion head 126. The second screw pump 127 may be configured to provide the slurry to the second extrusion head 126. The pump speed of the second screw pump 127 may be adjusted and the rate at which the second extrusion head 126 extrudes the slurry may be adjusted by adjusting the pump speed of the second screw pump 127, thereby adjusting the longitudinal areal density at which the second extrusion head 126 coats the slurry.
In some embodiments, the coating automation control system 100 may further include: a second drying box 180, a fourth surface densitometer 167 and a fifth surface densitometer 169.
The second drying oven 180 may dry the coated second side 112. Second drying box 180 may be mounted behind second extrusion head 126. The second drying compartment 180 may include a second inlet 181 and a second outlet 182. The second outlet 182 is rearward of the second inlet 181. After the driving device 121 drives the coated substrate 110 to pass through the first outlet 132 of the first drying box 130, the coated substrate reaches the second extrusion head 126, and the slurry is coated on the coated second surface 112 of the coated substrate 110; while the coated substrate 110 continues to move in the predetermined direction, the coated substrate 110 may pass through the second inlet 181 of the second drying box 180 to dry the slurry on the coated second side 112; and then continues to move in the preset direction.
Fourth densitometer 167 may be installed outside second inlet 181 of second drying compartment 180, or fourth densitometer 167 may be installed in front of second inlet 181 of second drying compartment 180. The fourth densitometer 167 may detect the wet film areal density of the second facer slurry prior to the coated second facer 112 entering the second inlet 181 of the second drying box 180 and transmit the wet film areal density of the second facer slurry to the control device 150.
Fifth areal density gauge 169 may be mounted outside of second outlet 182 of second drying box 180, or fifth areal density gauge 169 may be mounted behind second outlet 182 of second drying box 180. The fifth areal density gauge 169 may detect the areal density of the dry film of the second facer slurry after the coated second facer 112 has been dried by the second drying oven 180, and transmit the areal density of the dry film of the second facer slurry to the control device 150.
After the driving device 121 drives the coating substrate 110 to pass through the second surface densitometer 163, the coating substrate 110 may continue to move along the predetermined direction, the coating substrate 110 may pass through the second extrusion head 126, and the second screw pump 127 provides the slurry to the second extrusion head 126, and the slurry is extruded onto the coating second surface 112 through the second opening 1261 of the second extrusion head 126. The coated substrate 110 continuously moves along the preset direction, passes through the fourth densitometer 167, and the fourth densitometer 167 detects the wet film surface density of the second surface slurry before the coated second surface 112 enters the second drying box 180 in real time, and transmits the wet film surface density of the second surface slurry to the control device 150. As the coated substrate 110 continues to move in the predetermined direction, the coated substrate 110 passes through the second inlet 181 of the second drying box 180, and the second drying box 180 dries the slurry coated on the second side 112. Then, the coated substrate 110 moves continuously along the preset direction through the second outlet 182 of the second drying box 180, passes through the fifth areal density meter 169, the fifth areal density meter 169 detects the areal density of the dried film of the second face slurry of the coated second face 112 dried by the second drying box 180 in real time, and transmits the areal density of the dried film of the second face slurry to the control device 150. The control device 150 calculates and analyzes the wet film surface density of the second face slurry and the dry film surface density of the second face slurry to obtain a second face calculation result. The control device 150 controls the coater 120 by comparing the second surface calculation result with the standard areal density range. For example, the control device 150 controls the pump speed of the second screw pump 127 of the coater 120 through the communication signal to control the consistency of the longitudinal areal density of the slurry application on the second side 112; the control device 150 controls the opening and closing size of the second opening 1261 of the second extrusion head 126 of the coater 120 through the communication signal so as to control the consistency of the lateral areal density of the slurry application on the second side 112. By the above control operation, the consistency of the density of the slurry applied area for coating the second side 112 is ensured.
In summary, the control device 150 adjusts the coater 120 in real time according to the wet film surface density of the second side slurry, so as to solve the problem of feedback lag of the detection data; the control device 150 controls the opening and closing size of the second opening 1261 of the second face extrusion head 126, so that the problem that the transverse face density cannot be adjusted is solved.
Fig. 2 is a flowchart 200 of a control method of the coating automatic control system 100 according to the present application, and the control method 200 can be implemented by the coating automatic control system 100. The control method 200 may include:
step 210: the coating substrate 110 is driven to move along a preset direction, the driving device 121 in the coating machine 120 can drive the coating substrate 120 to move along the preset direction, and the coating substrate 110 can comprise a first coating surface 111 and a second coating surface 112;
step 220: driving the coater 120 to apply the slurry to the coated first surface 111, wherein a first screw pump 124 of the coater 120 may supply the slurry to a first extrusion head 123, and the slurry is applied to the coated first surface 111 through a first opening 1231 of the first extrusion head 123;
step 230: driving at least one surface densitometer to detect the wet film surface density of the first surface slurry before the coated first surface 111 enters the first drying box 130 and transmitting the wet film surface density of the first surface slurry to the control device 150, wherein the first surface densitometer 161 is installed outside the first inlet 131 of the first drying box 130 and is used for detecting the wet film surface density of the first surface slurry;
step 240: driving at least one surface densitometer to detect the dry film surface density of the first surface slurry after the coated first surface 111 is dried by the first drying box 130, and transmitting the dry film surface density of the first surface slurry to the control device 150, wherein the second surface densitometer 163 is installed outside the first outlet 132 of the first drying box 130 and is used for detecting the dry film surface density of the first surface slurry;
step 250: the control device 150 may perform calculation analysis on the wet film surface density of the first surface slurry and the dry film surface density of the first surface slurry to obtain a first surface calculation result; and
step 260: the control device 150 may adjust the coater 120 according to the first plane calculation result.
In some embodiments, step 260 may include: the control device 150 may adjust the pump speed of the first screw pump 124 of the coater 120 based on the first face calculation result to adjust the longitudinal areal density of the slurry application coating the first face 111. In some embodiments, step 260 may further include: the control device 150 may adjust the opening and closing size of the first extrusion head 123 of the coater 120 according to the first surface calculation result to adjust the lateral areal density of the slurry application coating the first surface 111.
In some embodiments, the control method 200 may further include:
step 270: driving at least one areal density meter to detect the areal density of the coated substrate 110 and transmitting the areal density of the coated substrate 110 to the control device 150, the third areal density meter 165 being installed in front of the first extrusion head 123 for detecting the areal density of the coated substrate 120;
step 280: the control device 150 may adjust the coater 120 according to the areal density of the coated substrate 110.
In some embodiments, the control method 200 may further include:
step 290: driving the coater 120 to apply the slurry to the coated second side 112, the second screw pump 127 of the coater 120 may supply the slurry to the second extrusion head 126, and the slurry is applied to the coated second side 112 through the second opening 1261 of the second extrusion head 126;
step 300: driving at least one areal densitometer to detect the wet film areal density of the second facer slurry prior to coating the second face 112 into the second drying box 180 and transmitting said wet film areal density of the second facer slurry to the control means 150, the fourth areal densitometer 167 being mounted outside the second inlet 181 of the second drying box 180 for detecting the wet film areal density of the second facer slurry;
step 310: driving at least one surface densitometer to detect the dry film surface density of the second surface slurry after the coated second surface 112 is dried by the second drying box 180, and transmitting the dry film surface density of the second surface slurry to the control device 150, wherein a fifth surface densitometer 169 is installed outside the second outlet 182 of the second drying box 180 and is used for detecting the dry film surface density of the second surface slurry;
step 320: the control device 150 may perform calculation analysis on the wet film surface density of the second side slurry and the dry film surface density of the second side slurry to obtain a second side calculation result;
step 330: the control device 150 may adjust the coater 120 according to the second side calculation result.
In some embodiments, step 330 may include: the control device 150 may adjust the pump speed of the second screw pump 127 of the coater 120 based on the second side calculation to adjust the longitudinal areal density of the slurry application coating the second side 112. In some embodiments, step 320 may further include: the control device 150 may adjust the opening and closing size of the second extrusion head 126 of the coater 120 according to the second surface calculation result to adjust the lateral areal density of the slurry application to coat the second surface 112.
In conclusion, upon reading the present detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure can be presented by way of example only, and not limitation. Those skilled in the art will appreciate that the present application is intended to cover various reasonable variations, adaptations, and modifications of the embodiments described herein, although not explicitly described herein. Such alterations, improvements, and modifications are intended to be suggested by this disclosure, and are within the spirit and scope of the exemplary embodiments of this disclosure.
Furthermore, certain terminology has been used in this application to describe embodiments of the disclosure. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present disclosure. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the disclosure.
It should be appreciated that in the foregoing description of embodiments of the disclosure, various features are grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of such features. This is not to be taken as an admission that any of the features of the claims are essential, and it is fully possible for a person skilled in the art to extract some of them as separate embodiments when reading the present application. That is, embodiments in the present application may also be understood as an integration of multiple sub-embodiments. And each sub-embodiment described herein is equally applicable to less than all features of a single foregoing disclosed embodiment.
Each patent, patent application, publication of a patent application, and other material, such as articles, books, descriptions, publications, documents, articles, and the like, cited herein is hereby incorporated by reference. All matters hithertofore set forth herein except as related to any prosecution history, may be inconsistent or conflicting with this document or any prosecution history which may have a limiting effect on the broadest scope of the claims. Now or later associated with this document. For example, if there is any inconsistency or conflict in the description, definition, and/or use of terms associated with any of the included materials with respect to the terms, descriptions, definitions, and/or uses associated with this document, the terms in this document are used.
Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Accordingly, the disclosed embodiments are presented by way of example only, and not limitation. Those skilled in the art may implement the present application in alternative configurations according to the embodiments of the present application. Thus, embodiments of the present application are not limited to those precisely described in the application.
Claims (15)
1. An automatic coating control system, comprising:
a coated substrate comprising a coated first side and a coated second side;
a coater configured to apply slurry to the coated substrate, the coater comprising:
a driving device configured to drive the coated substrate to move in a preset direction;
a first extrusion head configured to apply a slurry to the coated first face, the first extrusion head including a first opening;
a first progressive cavity pump coupled to the first extrusion head and configured to provide the slurry to the first extrusion head;
a first drying oven configured to dry the coated first side, the first drying oven comprising:
a first inlet;
a first outlet;
a control device configured to receive a communication signal and control the coater according to the communication signal;
a first areal density gauge mounted outside the first inlet of the first drying box and configured to detect a first areal slurry wet film areal density prior to the coated first face entering the first drying box and to transmit the first areal slurry wet film areal density to a control device;
and the second surface density meter is arranged outside the first outlet of the first drying box, is configured to detect the dry film surface density of the first surface slurry of the coated first surface dried by the first drying box and transmits the dry film surface density of the first surface slurry to a control device.
2. The coating automation control system of claim 1 further comprising a third areal density meter mounted in front of the first extrusion head and configured to detect the areal density of the coated substrate and transmit the areal density of the coated substrate to the control device.
3. The automatic coating control system of claim 1 wherein said control means controls the pump speed of said first screw pump via said communication signal to control the longitudinal areal density of said slurry application of said coated first side.
4. The automatic coating control system of claim 1, wherein said control device controls the opening and closing of said first opening of said first extrusion head via said communication signal to control the lateral areal density of said slurry application on said coated first surface.
5. The coating automatic control system of claim 1, wherein the coater further comprises:
a second extrusion head configured to apply slurry to the coated second face, the second extrusion head including a second opening;
a second progressive cavity pump coupled to the second extrusion head and configured to provide the slurry to the second extrusion head.
6. The coating automation control system of claim 5 further comprising:
a second drying oven configured to dry the coated second side, the second drying oven comprising:
a second inlet;
a second outlet;
a fourth densitometer mounted outside the second inlet of the second drying box configured to detect a wet film area density of the second facer slurry prior to the coated second facer entering the second drying box and to transmit the wet film area density of the second facer slurry to a control device; and
and the fifth surface density meter is arranged outside the second outlet of the second drying box, is configured to detect the dry film surface density of the second surface slurry of the coated second surface dried by the second drying box and transmits the dry film surface density of the second surface slurry to a control device.
7. The automatic coating control system of claim 6, wherein said control device controls the pump speed of said second screw pump via said communication signal to control the longitudinal areal density of said slurry application of said coated second side.
8. The automatic coating control system of claim 6, wherein said control device controls the opening and closing of said second opening of said second extrusion head via said communication signal to control the lateral areal density of said slurry application on said second side of said coating.
9. A control method of an automatic coating control system is characterized by comprising the following steps:
driving a coating substrate to move along a preset direction, wherein the coating substrate comprises a first coating surface and a second coating surface;
driving a coating machine to coat the first coating surface with slurry;
driving at least one surface density meter to detect the wet film surface density of the first surface slurry before the coated first surface enters a first drying box, and transmitting the wet film surface density of the first surface slurry to a control device;
driving at least one surface density meter to detect the surface density of a first surface slurry dry film after the first coated surface is dried by a first drying box, and transmitting the surface density of the first surface slurry dry film to the control device;
the control device calculates and analyzes the wet film surface density of the first surface slurry and the dry film surface density of the first surface slurry to obtain a first surface calculation result;
and the control device adjusts the coating machine according to the calculation result of the first surface.
10. The method of controlling an automatic coating control system according to claim 9, wherein the controlling means adjusting the coater according to the first surface calculation result includes:
and the control device adjusts the pump speed of a first screw pump of the coating machine according to the first surface calculation result so as to adjust the longitudinal surface density of the slurry coating on the first surface.
11. The method of controlling an automatic coating control system according to claim 9, wherein the controlling means adjusting the coater according to the first surface calculation result includes:
and the control device adjusts the opening and closing size of a first opening of a first extrusion head of the coating machine according to the calculation result of the first surface so as to adjust the transverse surface density of the slurry coating on the first surface to be coated.
12. The control method of an automatic coating control system according to claim 9, further comprising:
driving at least one areal density meter to detect the areal density of the coated substrate and transmit the areal density of the coated substrate to the control device;
the control device adjusts the coating machine according to the surface density of the coating substrate.
13. The control method of an automatic coating control system according to claim 9, further comprising:
driving a coating machine to coat the coating second surface with slurry;
driving at least one areal densitometer to detect a wet film areal density of the second facer slurry prior to the coated second facer entering the second drying oven, and to transmit the wet film areal density of the second facer slurry to the control device;
driving at least one surface density meter to detect the surface density of a second surface slurry dry film of the coated second surface dried by a second drying box, and transmitting the surface density of the second surface slurry dry film to the control device;
the control device calculates and analyzes the wet film surface density of the second face slurry and the dry film surface density of the second face slurry to obtain a second face calculation result;
the control device adjusts the coater according to the second surface calculation result.
14. The method of controlling an automatic coating control system according to claim 13, wherein the controlling means adjusting the coater according to the second surface calculation result includes:
the control device adjusts the pump speed of a second screw pump of the coater according to the second face calculation result to adjust the longitudinal areal density of the slurry application of the coated second face.
15. The method of controlling an automatic coating control system according to claim 13, wherein the controlling means adjusting the coater according to the second surface calculation result includes:
and the control device adjusts the opening and closing size of a second opening of a second extrusion head of the coating machine according to the calculation result of the second surface so as to adjust the transverse surface density of the slurry coating of the second surface.
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Address after: 621100 Zizhou Chancheng new area, Santai County, Mianyang City, Sichuan Province Applicant after: Sichuan Lingpai New Energy Technology Co.,Ltd. Applicant after: Suzhou Lingpai New Energy Technology Co.,Ltd. Applicant after: Hunan Lingpai New Energy Technology Co.,Ltd. Address before: 621100 Zizhou Chancheng new area, Santai County, Mianyang City, Sichuan Province Applicant before: Sichuan xinminya Battery Technology Co.,Ltd. Applicant before: Suzhou Lingwei New Energy Technology Co.,Ltd. Applicant before: Hunan xinminya New Energy Technology Co.,Ltd. |
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Effective date of registration: 20220805 Address after: 421600 Jinwei Road, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Applicant after: Hunan lingpaidazhi Technology Co.,Ltd. Applicant after: Hunan Lingpai New Energy Technology Co.,Ltd. Applicant after: Hengyang Lingpai New Energy Technology Co.,Ltd. Applicant after: Suzhou Lingpai New Energy Technology Co.,Ltd. Applicant after: Hunan Lingpai Dingxin Battery Research Institute Co.,Ltd. Address before: 621100 Zizhou Chancheng new area, Santai County, Mianyang City, Sichuan Province Applicant before: Sichuan Lingpai New Energy Technology Co.,Ltd. Applicant before: Suzhou Lingpai New Energy Technology Co.,Ltd. Applicant before: Hunan Lingpai New Energy Technology Co.,Ltd. |
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Effective date of registration: 20230512 Address after: 421681 Jinwei Road, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Applicant after: Hunan lingpaidazhi Technology Co.,Ltd. Applicant after: Hunan Lingpai New Energy Technology Co.,Ltd. Applicant after: Hengyang Lingpai New Energy Technology Co.,Ltd. Applicant after: Hunan Lingpai New Energy Research Institute Co.,Ltd. Applicant after: Hunan Lingpai Energy Storage Technology Co.,Ltd. Address before: 421600 Jinwei Road, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Applicant before: Hunan lingpaidazhi Technology Co.,Ltd. Applicant before: Hunan Lingpai New Energy Technology Co.,Ltd. Applicant before: Hengyang Lingpai New Energy Technology Co.,Ltd. Applicant before: Suzhou Lingpai New Energy Technology Co.,Ltd. Applicant before: Hunan Lingpai Dingxin Battery Research Institute Co.,Ltd. |
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Application publication date: 20200414 |