Pole piece scraping and washing device

Abstract

The utility model discloses a pole piece scraping and washing device, and relates to the field of battery piece preparation. The pole piece scraping and washing device comprises a spraying scraping and washing mechanism, the spraying scraping and washing mechanism comprises a scraper assembly, a cleaning assembly, a spraying assembly, a vacuum adsorption platform and a moving assembly, and the scraper assembly and the spraying assembly are arranged on the moving assembly and located above the vacuum adsorption platform. The movable component can freely move above the vacuum adsorption platform; a height sensor and a pressure sensor are arranged on the movement assembly; the scraper assembly is connected with the pressure sensor; the cleaning assembly is arranged on the outer side of the vacuum adsorption platform; an edge searching sensor is arranged on the side face of the vacuum adsorption platform. According to the utility model, liquid spraying and the movement of the scraper can be flexibly controlled, and meanwhile, the height and the pressure of the scraper can be accurately regulated and controlled, so that the working condition of a station is improved, and the product yield is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery production, in particular to a pole piece scraping and cleaning device. Background Art

[0002] During the production of new energy lithium batteries, it is necessary to clean the surface coatings of the positive and negative electrodes to create grooves and lines of specified sizes. Currently, the market mainly uses lasers to ablate and vaporize the coatings on the electrode surfaces to create specified grooves or line shapes. Because the local surface temperature is relatively high when the laser ablates and vaporizes the coating, especially for coatings made of materials with higher temperature resistance, the temperature required for vaporization is even higher, and the laser needs to ablate the coating multiple times to clean it, resulting in secondary thermal deformation of the foil or pinholes penetrating the foil. In particular, the aluminum foil of the positive electrode substrate has a low density and a low melting point, making it extremely easy to be penetrated by the laser. Therefore, the application of lasers also has certain limitations. With the diversity of product material systems and the gradual increase in quality and yield requirements, laser cleaning can no longer fully meet the production needs of customers.

[0003] Currently, scraping is usually used instead of laser cleaning. However, when the current scraping mechanism is used, the scraper and the electrode are prone to being non-parallel, and there is a risk of scratching the electrode. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, a pole piece scraping and cleaning device is provided, which scrapes the surface coating of the pole piece by a scraper. By coordinating the control of the scraper height and pressure, the function of precise control of the scraping height and force can be achieved, thereby improving the working conditions of the work station and meeting the stable and high-quality operation of the equipment.

[0005] The utility model provides the following technical solutions:

[0006] The utility model proposes a pole piece scraping and cleaning device, comprising a spray scraping and cleaning mechanism, wherein the spray scraping and cleaning mechanism comprises a scraper assembly, a cleaning assembly, a spray assembly, a vacuum adsorption platform and a motion assembly, wherein the scraper assembly and the spray assembly are arranged on the motion assembly, and the scraper assembly and the spray assembly are located above the vacuum adsorption platform and can move freely above the vacuum adsorption platform through the motion assembly; a height sensor and a pressure sensor are provided on the motion assembly; the scraper assembly and the pressure sensor are connected; the cleaning assembly is arranged on the outside of the vacuum adsorption platform; and an edge-finding sensor is provided on the side of the vacuum adsorption platform.

[0007] Furthermore, the motion assembly includes an x-axis motion component, a y-axis motion component, and a z-axis motion component;

[0008] The y-axis moving part can move on the x-axis through the x-axis moving part, and the z-axis moving part can move on the y-axis through the y-axis moving part;

[0009] The scraper assembly is arranged on the z-axis moving part; and the spray assembly is arranged on the y-axis moving part.

[0010] Furthermore, the cleaning component includes a dust suction device and a brush, and the dust suction device is arranged below the brush.

[0011] Furthermore, the cleaning component also includes a brush cylinder, which is connected to the brush and can drive the brush to move up and down.

[0012] Furthermore, a positioning piece is provided on the scraper assembly.

[0013] Furthermore, the spray assembly includes a controller, a spray valve, a solution pipeline and an atomizing gas pipeline, the spray valve is connected to the solution pipeline and the atomizing gas pipeline respectively; the solution pipeline is provided with a flow valve; the atomizing gas pipeline is provided with a high-frequency precision proportional valve; the controller is electrically connected to the spray valve, the flow valve and the high-frequency precision proportional valve respectively.

[0014] Furthermore, the solution pipeline is connected to a liquid storage tank, and the liquid storage tank is also connected to a compressed air pipeline. The compressed air pipeline is provided with a pressure regulating valve. The compressed air pipeline is used to transport compressed air to the liquid storage tank to provide it with power to input the spray valve through the solution pipeline.

[0015] Furthermore, the spray assembly also includes a relay and a spray valve drive board, the relay is electrically connected to the spray valve drive board; the controller is electrically connected to the relay, and the relay is connected to a signal generator; the spray valve drive board is electrically connected to the spray valve; the controller is electrically connected to the spray valve through the relay and the spray valve drive board.

[0016] Furthermore, a precision pressure regulating valve is provided on the atomizing gas pipeline, and the high-frequency precision proportional valve is located between the spray valve and the precision pressure regulating valve. The atomizing gas pipeline can deliver atomizing compressed air to the spray valve to achieve an atomizing spray effect.

[0017] Furthermore, the pole piece scraping and cleaning device also includes a positioning optical fiber and a drying mechanism; the spray scraping and cleaning mechanism is located between the positioning optical fiber and the drying mechanism, and is connected to the positioning optical fiber and the drying mechanism respectively.

[0018] Furthermore, the pole piece scraping and cleaning device also includes a traction assembly, which is sequentially connected to the positioning optical fiber, the spray scraping and cleaning mechanism, and the drying mechanism.

[0019] Furthermore, the traction assembly includes a material belt, a driving mechanism and a guiding mechanism. The driving mechanism is connected to the material belt and is used to drive the material belt transmission; the guiding mechanism is provided in multiple numbers and is used to guide the material belt.

[0020] Furthermore, the positioning optical fiber, spray scraping mechanism and drying mechanism are respectively provided with two groups, and the first positioning optical fiber, first spray scraping mechanism, first drying mechanism, second positioning optical fiber, second spray scraping mechanism and second drying mechanism are connected in sequence; a guiding mechanism is provided between the first spray scraping mechanism and the first drying mechanism, and between the second spray scraping mechanism and the second drying mechanism.

[0021] Furthermore, the pole piece scraping device also includes a control system, and the spray scraping mechanism is connected to the control system.

[0022] The utility model has the following beneficial technical effects:

[0023] The utility model has a simple structure and high reliability. It can flexibly control the movement of the liquid spray and the scraper. By coordinating the control of the scraper height and pressure, and the vacuum adsorption platform flatly adsorbs the electrode, it can achieve the function of accurately controlling the scraping height and force of the scraper mechanism, thereby improving the working conditions of the work station and meeting the stable and high-quality operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the spray scraping mechanism provided by the utility model.

[0026] Figure 2 This is a top view of the spray scraping mechanism provided by the utility model.

[0027] Figure 3 This is a front view of the spray scraping mechanism provided by the utility model.

[0028] Figure 4 This is a schematic diagram of the installation of the scraper assembly in the spray scraping mechanism provided by the utility model.

[0029] Figure 5 This is a schematic diagram of the installation of the spray assembly in the spray scraping mechanism provided by the utility model.

[0030] Figure 6 This is a schematic diagram of the liquid spraying logic control provided by the utility model.

[0031] Figure 7 This is a schematic diagram of the electrode processing state provided by the utility model.

[0032] Figure 8 Schematic diagram of the electrode scraping and cleaning device provided in Example 2 of the present utility model.

[0033] Description of the symbols in the figure:

[0034] 1-pole piece; 2-x-axis moving part; 3-y-axis moving part; 4-z-axis moving part; 5-edge-finding sensor; 6-vacuum adsorption platform; 7-cleaning component; 701-brush; 702-brush cylinder; 8-scraper assembly; 9-spray assembly; 10-pressure sensor; 11-height sensor; 12-point to be processed; 13-processing point after spraying; 14-processing point after scraping; 15-first positioning optical fiber; 16-first drying mechanism; 17-material belt; 18-driving mechanism; 19-second positioning optical fiber; 20-second drying mechanism; 21-first guide roller; 22-second guide roller; 23-third guide roller; 24-fourth guide roller; 25-first spray scraping mechanism; 26-second spray scraping mechanism. DETAILED DESCRIPTION

[0035] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, 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.

[0037] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0038] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] Example 1

[0040] See also Figure 1-5 The electrode scraping device shown includes a spray scraping mechanism, which includes a scraper assembly 8, a cleaning assembly 7, a spray assembly 9, a vacuum adsorption platform 6, a electrode 1 and a moving assembly. The scraper assembly 8 and the spray assembly 9 are installed on the moving assembly. The scraper assembly 8 and the spray assembly 9 are located above the vacuum adsorption platform 6 and can move freely above the vacuum adsorption platform 6 through the moving assembly; a height sensor 11 and a pressure sensor 10 are provided on the moving assembly; the scraper assembly 8 and the pressure sensor 10 are connected, and the pressure of the scraper when in use can be detected by the pressure sensor 10; the cleaning assembly 7 is arranged on the outside of the vacuum adsorption platform 6; an edge-finding sensor 5 is provided on the side of the vacuum adsorption platform 6, and the edge-finding sensor 5 is used to locate the reference edge of the electrode 1; the electrode 1 can be adsorbed on the vacuum adsorption platform 6 by vacuum, and the processing point is located on the side of the electrode 1.

[0041] Specifically, the height sensor 11 is a precision height sensor.

[0042] Specifically, the motion assembly is provided with a positioning member (not shown in the figure) for positioning the processing point.

[0043] Specifically, the motion assembly includes an x-axis motion component 2, a y-axis motion component 3, and a z-axis motion component 4;

[0044] The y-axis moving part 3 can move on the x-axis through the x-axis moving part 2, and the z-axis moving part 4 can move on the y-axis through the y-axis moving part 3;

[0045] The scraper assembly 8 is arranged on the z-axis moving part 4 and can move freely above the vacuum adsorption platform 6 through the x-axis moving part 2, the y-axis moving part 3 and the z-axis moving part 4; the spray assembly 9 is connected to the y-axis moving part 3 and can move freely above the vacuum adsorption platform 6 through the x-axis moving part 2, the y-axis moving part 3 and the z-axis moving part 4.

[0046] Specifically, in this embodiment, the x-axis moving member 2 , the y-axis moving member 3 , and the z-axis moving member 4 are high-precision linear motors arranged along the x-axis, the y-axis, and the z-axis, respectively.

[0047] Specifically, the cleaning component 7 includes a dust suction device (not shown in the figure), a brush 701 and a brush cylinder 702. The dust suction device is arranged below the brush 701. The brush cylinder 702 is connected to the brush 701 and can drive the brush 701 to move up and down.

[0048] For details, please refer to Figure 6 The spray assembly 9 includes a programmable logic controller (PLC), a spray valve, a relay, a signal generator, a spray valve driver board, a solution pipeline, and an atomizing gas pipeline. The spray valve is connected to the solution pipeline and the atomizing gas pipeline, respectively. A precision flow valve is provided on the solution pipeline, and a high-frequency precision proportional valve is provided on the atomizing gas pipeline. The PLC is electrically connected to the relay, the precision flow valve, and the high-frequency precision proportional valve, respectively. The relay is electrically connected to the signal generator, the PLC, and the spray valve driver board, respectively. The spray valve driver board is electrically connected to the spray valve.

[0049] Specifically, when the electrode 1 needs to be sprayed, in order to ensure the quantitative and uniform spraying of the solution, the high-frequency proportional valve is first controlled by the PLC to open the constant-pressure and uniform-speed air blowing atomization in advance, and then the precision flow valve is controlled to open the constant-pressure and uniform-speed to supply the solution to the spray valve. The signal generator continuously sends a pulse width modulation (PWM) signal to the relay. The PLC controls the on and off of the relay, and regulates the flow rate and atomization size of the spray valve through the spray valve drive board. After the spraying is completed, the PLC closes the precision flow valve for liquid supply in advance, and then closes the high-frequency proportional valve for air blowing and the relay. In this way, the solution can be sprayed quantitatively and evenly on the surface of the electrode 1, thereby improving the working conditions of the work station and improving the overall efficiency of the device.

[0050] Specifically, the solution pipeline is connected to a liquid storage tank, which is also connected to a compressed air pipeline. A pressure regulating valve is provided on the compressed air pipeline. The compressed air pipeline is used to transport compressed air to the liquid storage tank to provide it with power to input the spray valve through the solution pipeline.

[0051] Specifically, a precision pressure regulating valve is further provided on the atomizing gas pipeline, and a high-frequency precision proportional valve is located between the spray valve and the precision pressure regulating valve. The atomizing gas pipeline can deliver atomizing compressed air to the spray valve to achieve an atomizing spray effect.

[0052] Specifically, the pole piece scraping and cleaning device further includes a control system, and the spray scraping and cleaning mechanism is connected to the control system.

[0053] Specifically, in this embodiment, when the electrode 1 is scraped and cleaned, the electrode 1 is moved from left to right and then flatly adsorbed on the vacuum adsorption platform 6. The edge-finding sensor 5 locates the reference edge of the electrode 1 in the y-axis direction to ensure that the relative distance between the processing point and the edge is the value specified by the process. The control system controls the x-axis moving part 2 and the y-axis moving part 3 to drive the spray assembly 9 to move to the processing point. The spray assembly 9 sprays the processing point 12 uniformly outward along the y-axis direction and then stands still. After the standing still is completed, the control system controls the x-axis moving part 2 and the y-axis moving part 3 to drive the scraper assembly 8 to move to the processing point 13 after the spraying, and adjusts the height of the scraper assembly 8 through the z-axis moving part 4 to make it descend to the processing point. At the same time, the height sensor 11 monitors its descending height in real time. After the scraper assembly 8 contacts the electrode 1, the pressure sensor 10 can monitor the downward pressure in real time. When the scraper assembly 8 descends a distance or the pressure reaches the standard, the z-axis moving part 4 stops descending. The scraper assembly 8 scrapes the coating on the surface of the electrode 1 from the inside to the outside along the y-axis direction. The dust suction device in the cleaning assembly 7 sucks away the coating scraped off by the slag. After the coating is scraped clean, the y-axis moving part 3 controls the scraper assembly 8 to move outward to the top of the cleaning assembly 7, and the control system controls the brush cylinder 702 to drive the brush 701 to move upward until the scraper assembly 8 can be brushed, and the scraper assembly 8 is driven to move back and forth along the x-axis direction through the x-axis moving part 2 until the brush 701 cleans and sucks away the coating slag on the scraper, obtaining the scraped processing point 14. After the cleaning is completed, the brush cylinder 702 drives the brush 701 to move downward to reset, and the x-axis moving part 2, y-axis moving part 3 and z-axis moving part 4 retreat to reset. At the same time, the vacuum adsorption platform 6 breaks the vacuum, so that the electrode 1 can continue to be transported. The various processing points of the electrode 1 during the scraping process are as follows Figure 7 shown.

[0054] In this embodiment, the electrode scraping mechanism features a simple structure and high reliability. It can precisely control the scraping height and force of the scraper assembly, thereby improving the working conditions and ensuring stable and high-quality operation of the equipment. Furthermore, the atomization assembly can perform a quantitative atomization spray on the electrode, addressing the processing requirements of diverse lithium electrode material systems, while reducing costs and improving the overall efficiency of the equipment.

[0055] Example 2

[0056] On the basis of Example 1, the electrode scraping and cleaning device of this embodiment further includes a positioning optical fiber and a drying mechanism; the spray scraping and cleaning mechanism is located between the positioning optical fiber and the drying mechanism, and is connected to the positioning optical fiber and the drying mechanism respectively.

[0057] Specifically, the electrode scraping and cleaning device further comprises a traction assembly, which is sequentially connected to a positioning optical fiber, a spray scraping and cleaning mechanism, and a drying mechanism. The drying mechanism can dry the electrode 1 after the spray scraping and cleaning to prevent the electrode from sticking to the roller.

[0058] Specifically, the traction assembly includes a material belt 17, a driving mechanism 18, and a guiding mechanism. The driving mechanism 18 is connected to the material belt 17 to drive the material belt 17; the guiding mechanism is used to guide the material belt 17. The material belt 17 is used to carry the pole piece 1 and transport it to the work station.

[0059] Specifically, such as Figure 8 As shown, the positioning optical fiber, spray scraping mechanism, and drying mechanism are each provided in two groups. The guide mechanism includes a first guide roller 21, a second guide roller 22, a third guide roller 23, and a fourth guide roller 24. The first positioning optical fiber 15, the first spray scraping mechanism 25, the first guide roller 21, the second guide roller 22, the first drying mechanism 16, the second positioning optical fiber 19, the second spray scraping mechanism 26, the third guide roller 23, the fourth guide roller 24, and the second drying mechanism 20 are sequentially connected. The first drying mechanism 16 is located below the first spray scraping mechanism 25, and the second drying mechanism 20 is located below the second spray scraping mechanism 26.

[0060] In this embodiment, when the electrode 1 needs to be scraped, the driving mechanism 18 drives the material belt 17 to move, thereby realizing the transmission of the electrode 1. When the first positioning optical fiber 15 positions the electrode 1 and reaches the first vacuum adsorption platform of the first spray scraping mechanism 25, the transmission is stopped, and the first control system controls the first vacuum adsorption platform to start the vacuum, and the electrode 1 is flatly adsorbed on the first vacuum adsorption platform. After the first spray scraping mechanism 25 sprays and scrapes the front of the electrode 1, the material belt 17 drives the electrode 1 to move again. Under the action of the first guide roller 21, the horizontal rightward transmission is turned to vertical downward transmission, and then under the action of the second guide roller 22, the horizontal left transmission is turned from upward to downward. After reaching the first drying mechanism 16, the first drying mechanism 16 dries the front of the electrode 1 to complete the processing of the front of the electrode 1. At this time, the back of the electrode 1 is facing up. After the front drying is completed, similarly, the electrode 1 is continued to be transported to process its back.

[0061] When the second positioning optical fiber 19 is positioned to the second vacuum adsorption platform of the pole piece 1 and reaches the second spray scraping mechanism 26, the transmission is stopped, and the second control system controls the second vacuum adsorption platform to start the vacuum, and the pole piece 1 is flatly adsorbed on the second vacuum adsorption platform. After the second spray scraping mechanism 26 sprays and scrapes the back of the pole piece 1, the material belt 17 drives the pole piece 1 to move again, and under the action of the third guide roller 23, it is turned from horizontal leftward transmission to vertical downward transmission, and then horizontally transmitted to the right under the action of the fourth guide roller 24. After arriving at the second drying mechanism 20, the second drying mechanism 20 dries the back of the pole piece 1 to complete the scraping process of the entire pole piece 1.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A pole piece scraping and cleaning device, characterized in that: It includes a spray scraping mechanism, which includes a scraper assembly, a cleaning assembly, a spray assembly, a vacuum adsorption platform and a moving assembly. The scraper assembly and the spray assembly are arranged on the moving assembly. The scraper assembly and the spray assembly are located above the vacuum adsorption platform and can move freely above the vacuum adsorption platform through the moving assembly; a height sensor and a pressure sensor are provided on the moving assembly; the scraper assembly and the pressure sensor are connected; the cleaning assembly is arranged on the outside of the vacuum adsorption platform; and an edge-finding sensor is provided on the side of the vacuum adsorption platform.

2. The electrode scraping and cleaning device according to claim 1, characterized in that: The motion assembly includes an x-axis motion part, a y-axis motion part and a z-axis motion part; The y-axis moving part can move on the x-axis through the x-axis moving part, and the z-axis moving part can move on the y-axis through the y-axis moving part; The scraper assembly is arranged on the z-axis moving part; and the spray assembly is arranged on the y-axis moving part.

3. The electrode scraping and cleaning device according to claim 1, characterized in that: The cleaning component comprises a dust suction device and a brush, and the dust suction device is arranged below the brush.

4. The electrode scraping and cleaning device according to claim 3, characterized in that: The cleaning component also includes a brush cylinder, which is connected to the brush and can drive the brush to move up and down.

5. The electrode scraping and cleaning device according to claim 1, characterized in that: The spray assembly includes a controller, a spray valve, a solution pipeline and an atomizing gas pipeline. The spray valve is connected to the solution pipeline and the atomizing gas pipeline respectively; a flow valve is provided on the solution pipeline; a high-frequency precision proportional valve is provided on the atomizing gas pipeline; and the controller is electrically connected to the spray valve, the flow valve and the high-frequency precision proportional valve respectively.

6. The electrode scraping and cleaning device according to claim 1, characterized in that: It also includes a positioning optical fiber and a drying mechanism; the spray scraping mechanism is located between the positioning optical fiber and the drying mechanism, and is connected to the positioning optical fiber and the drying mechanism respectively.

7. The electrode scraping and cleaning device according to claim 6, characterized in that: It also includes a traction assembly, which is sequentially connected to the positioning optical fiber, the spray scraping mechanism and the drying mechanism.

8. The electrode scraping and cleaning device according to claim 7, characterized in that: The traction assembly includes a material belt, a driving mechanism and a guiding mechanism. The driving mechanism is connected to the material belt and is used to drive the material belt transmission; the guiding mechanism is provided in multiple pieces and is used to guide the material belt.

9. The electrode scraping and cleaning device according to claim 8, characterized in that: The positioning optical fiber, spray scraping mechanism and drying mechanism are respectively provided with two groups, and the first positioning optical fiber, the first spray scraping mechanism, the first drying mechanism, the second positioning optical fiber, the second spray scraping mechanism and the second drying mechanism are connected in sequence; a guiding mechanism is provided between the first spray scraping mechanism and the first drying mechanism, and between the second spray scraping mechanism and the second drying mechanism.

10. The electrode scraping and cleaning device according to any one of claims 1 to 9, characterized in that: It also includes a control system, and the spray scraping mechanism is connected to the control system.

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