Coating device for button power supply

Abstract

The utility model discloses a coating device for a button battery, which relates to the technical field of lithium ion batteries and comprises a workbench, a coating plate is arranged at the upper end of the workbench, and a filtering structure and a scraping structure are sequentially mounted at the upper end of the coating plate from front to back; by means of the filtering structure, agglomerated particles in slurry can be filtered out, only the slurry meeting the requirement is allowed to pass through the sinking opening, and it is guaranteed that the slurry used in the coating process is pure and free of impurities; through cooperative arrangement of a height adjusting assembly and a width adjusting structure, the height of the scraper can be adjusted through the synergistic effect of a rotary knob, a connecting rod, a screw rod and other components, so that the uniformity and consistency of the thickness of a coating layer are ensured, the width of a sinking opening is adjusted through the width adjusting structure, and coating of different widths is achieved; the friction force between the device and the current collector is reduced, and the defects, such as scratches and abrasion, of the pole piece caused by friction are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium ion battery technical field, concretely is a kind of coating device for button cell. BACKGROUND

[0002] With the popularization of new energy vehicles, the update of electronic equipment and the increase of energy storage system demand, lithium ion battery market and technology are continuously developing. Button cell, as an important tool for battery material testing and process research, plays an important role in evaluating the performance of different battery components and guiding mass production.

[0003] In the slurry coating process, a key link in button cell production, the existing coating device has defects. The existing coating scraper is difficult to evenly distribute the slurry due to its own structure, resulting in uneven coating thickness on the electrode surface, affecting the uniformity of active material loading, and thus affecting the internal resistance and electrochemical performance of the battery.

[0004] Based on this, a coating device for button cell is now provided, which can eliminate the drawbacks of existing devices. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a kind of coating device for button cell, to solve the problem that the existing button cell coating device in the background art is difficult to evenly distribute slurry, resulting in uneven coating thickness on the electrode surface, affecting the uniformity of active material loading, and thus affecting the internal resistance and electrochemical performance of the battery.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] A coating device for button cell, comprising a workbench, the workbench upper end is provided with coating plate, the coating plate upper end is installed with filter structure and scraping structure in turn from front to back.

[0008] Based on the above technical solutions, the utility model also provides the following optional technical solutions:

[0009] Preferably, the filter structure comprises a sink installed on the upper end of the coating plate, the upper end of the sink is provided with a mounting hole and a positioning hole, a sink hole is formed through the bottom of the mounting hole, an annular plate is installed on the upper end of the sink, positioning blocks matched with the positioning holes are fixed on both sides of the bottom end of the annular plate, a filter screen is fixed on the bottom end of the annular plate, and a width adjusting structure is provided inside the sink hole.

[0010] Preferably, the width adjusting structure comprises a flow resistance block slidingly installed inside the sink hole, a connecting plate is fixed to the other end of the flow resistance block, the connecting plate is fixedly connected with the telescopic end of the electric push rod, and the electric push rod is installed at the front end of the sink.

[0011] Preferably, the scraping structure comprises a moving block mounted on the upper end of the coating plate, a scraper opening is formed through the upper end of the moving block for mounting a scraper, adjusting openings are symmetrically formed on both sides of the moving block, adjusting blocks are slidably mounted in the adjusting openings, the adjusting blocks are symmetrically mounted on both sides of the scraper, and height adjusting assemblies are arranged on both sides of the moving block.

[0012] Preferably, the height adjusting assembly comprises a knob mounted on the upper end of the moving block, a screw rod is fixedly connected to the lower end of the knob through a connecting rod, the screw rod is rotatably mounted in the adjusting opening and is in threaded connection with the adjusting block, a pointer is arranged on the outer wall of the adjusting block, and scale lines are arranged on the outer walls of both sides of the moving block.

[0013] Preferably, baffle plates are fixedly arranged at the bottoms of both sides of the moving block, and pulleys are rotatably mounted on the outer walls of the baffle plates.

[0014] Compared with the prior art, the utility model has the beneficial effects as follows:

[0015] 1、The filter structure can filter agglomerated particles in the slurry, only allows slurry meeting the requirements to pass through the sinking opening, and ensures that the slurry used in the coating process is pure and free of impurities.

[0016] 2、The height adjusting assembly and the width adjusting structure are cooperatively arranged, the height of the scraper can be adjusted by the cooperation of the knob, the connecting rod and the screw rod, the uniformity and consistency of the coating layer thickness are ensured, the width of the sinking opening is adjusted by the width adjusting structure, and coating with different widths is realized.

[0017] 3、The pulleys reduce the friction between the device and the current collector, and reduce defects of the pole piece, such as scratches and abrasion, caused by friction. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model.

[0019] Figure 2 It is a structural schematic view of the filter structure and the width adjusting structure of the utility model.

[0020] Figure 3 It is a structural schematic view of the width adjusting structure of the utility model.

[0021] Figure 4 It is a structural schematic view of one side of the scraping structure of the utility model.

[0022] Figure 5 It is a structural schematic view of the other side of the scraping structure of the utility model.

[0023] Marked notes: 1, workbench; 2, coating plate; 3, filter structure; 301, sinker; 302, mounting port; 303, sink port; 304, positioning hole; 305, ring plate; 306, positioning block; 307, filter screen; 4, width adjustment structure; 401, electric push rod; 402, connecting plate; 403, resistance block; 5, scraping structure; 501, moving block; 502, scraper port; 503, adjustment port; 504, scraper; 505, adjustment block; 506, pulley; 507, pointer; 508, scale mark; 509, baffle; 51, height adjustment assembly; 511, knob; 512, connecting rod; 513, screw rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below with the help of drawings and examples.

[0025] In one embodiment, as shown in Figures 1-5 A coating device for buckling electricity, comprising a workbench 1, the upper end of the workbench 1 is provided with a coating plate 2, and the upper end of the coating plate 2 is sequentially provided with a filter structure 3 and a scraping structure 5 from front to back.

[0026] In this embodiment, first, the current collector is laid flat on the upper end of the coating plate 2, then the agglomerated particles in the slurry are filtered through the filter structure 3, the filtered slurry sinks to the surface of the current collector on the upper end of the coating plate 2, and then the scraping structure 5 is used to scrape and coat the slurry on the surface of the current collector by using an external force (such as manual or mechanical driving).

[0027] In an alternative embodiment, the filter structure 3 comprises a sinker 301 mounted on the upper end of the coating plate 2, the upper end of the sinker 301 is provided with a mounting port 302 and a positioning hole 304, the bottom of the mounting port 302 is provided with a sink port 303, the upper end of the sinker 301 is provided with a ring plate 305, the bottom of the ring plate 305 is fixed with positioning blocks 306 matched with the positioning hole 304, the bottom of the ring plate 305 is fixed with a filter screen 307, and the sink port 303 is provided with a width adjustment structure 4.

[0028] It should be noted that the sinker 301 is mounted on the upper end of the coating plate 2 to provide a closed space for filtering the slurry. The sink port 303 is located in the bottom of the mounting port 302, and the slurry sinks to the coating plate 2 through this port. The positioning hole 304 is matched with the positioning blocks 306 at the bottom of the ring plate 305 to ensure accurate installation of the ring plate 305. The ring plate 305 is fixed with the filter screen 307 and connected with the sinker 301 through the positioning blocks 306. The filter screen 307 filters the agglomerated particles in the slurry, allowing only the slurry meeting the requirements to pass through.

[0029] In an alternative embodiment, the width adjusting structure 4 comprises a flow blocking block 403 slidingly mounted inside the sinking port 303, the other end of the flow blocking block 403 is fixedly connected with a connecting plate 402, the connecting plate 402 is fixedly connected with the telescopic end of an electric push rod 401, and the electric push rod 401 is mounted at the front end of the sinker 301.

[0030] It should be noted that the electric push rod 401 provides power to push the connecting plate 402 and the flow blocking block 403 to move. The flow blocking block 403 is slidingly mounted inside the sinking port 303, and the width of the sinking port 303 is adjusted by moving.

[0031] In an alternative embodiment, the width adjusting structure 4 comprises a flow blocking block 403 slidingly mounted inside the sinking port 303, the other end of the flow blocking block 403 is fixedly connected with a connecting plate 402, the connecting plate 402 is fixedly connected with the telescopic end of an electric push rod 401, and the electric push rod 401 is mounted at the front end of the sinker 301.

[0032] It should be noted that the width adjusting structure 4 is mainly used for scraping the slurry on the upper end of the coating plate 2 to achieve uniform coating effect. The structure comprises a moving block 501 mounted on the upper end of the coating plate 2, and a scraper port 502 is formed on the upper end of the moving block 501 for mounting a scraper 504. The two sides of the moving block 501 are symmetrically provided with adjusting ports 503, and adjusting blocks 505 are slidingly mounted inside the adjusting ports 503. The adjusting blocks 505 are symmetrically mounted on the two sides of the scraper 504, allowing the scraper 504 to be finely adjusted in the horizontal direction. The height adjusting assembly 51 allows the height of the scraper 504 to be adjusted as needed to achieve uniform scraping of slurry of different thicknesses.

[0033] In an alternative embodiment, the height adjusting assembly 51 comprises a knob 511 mounted on the upper end of the moving block 501, the lower end of the knob 511 is fixedly connected with a connecting rod 512, the connecting rod 512 is fixedly connected with a screw rod 513, the screw rod 513 is rotatably mounted inside the adjusting port 503 and is threadedly connected with the adjusting block 505, the outer wall of the adjusting block 505 is provided with a pointer 507, and the outer walls of the two sides of the moving block 501 are each provided with a scale mark 508.

[0034] It should be noted that when the knob 511 is rotated, the screw rod 513 is driven to rotate inside the adjusting port 503 through the connecting rod 512. Since the screw rod 513 is threadedly connected with the adjusting block 505, the adjusting block 505 and the scraper 504 can be driven to move up and down.

[0035] The outer wall of the moving block 501 is provided with a scale mark 508, and the outer wall of the adjusting block 505 is provided with a pointer 507. The height of the doctor blade 504 can be accurately controlled by observing the position of the pointer 507 on the scale mark 508.

[0036] In an optional embodiment, the bottom of the moving block 501 is fixed with a baffle 509, and the outer wall of the baffle 509 is rotatably provided with a pulley 506.

[0037] It should be noted that the pulley 506 is used to reduce the friction between the doctor blade 504 and the current collector, thereby reducing the occurrence of defects of the pole piece.

[0038] The above embodiment discloses a coating device for stripping electricity. First, the current collector is laid on the coating plate 2. Then, the height of the doctor blade 504 is adjusted by the height adjusting assembly 51 to realize coating with different thicknesses. The width of the sink port 303 is adjusted by the width adjusting structure 4 to realize coating with different widths. Then, the slurry is poured into the mounting port 302 of the filter structure 3. After the filter screen 307 filters out the agglomerated particles, the slurry is sunk to the surface of the current collector on the coating plate 2 through the sink port 303. The doctoring structure 5 is pushed to move on the coating plate 2 by an external force (such as manual or mechanical driving). The doctor blade 504 scrapes the slurry on the surface of the current collector during the movement to form a uniform coating.

[0039] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A coating device for pinching off, characterized by Including workbench (1), the workbench (1) upper end is equipped with coating plate (2), the coating plate (2) upper end is installed filter structure (3) and scraping structure (5) from front to back in proper order; The filter structure (3) includes a sink (301) installed on the upper end of the coating plate (2), the sink (301) upper end is installed with a ring plate (305), the ring plate (305) bottom is fixed with a filter screen (307); The scraping structure (5) includes a moving block (501) installed on the upper end of the coating plate (2), the moving block (501) upper end is provided with a scraper opening (502) for installing a scraper (504), the moving block (501) both sides are provided with height adjusting assembly (51) for adjusting the height position of the scraper (504).

2. The coating device for pinching off according to claim 1, wherein The sink (301) upper end is provided with a mounting port (302) and a positioning hole (304), the mounting port (302) inner bottom is provided with a sinking port (303), the ring plate (305) bottom both sides are fixed with a positioning block (306) matched with the positioning hole (304), the sinking port (303) is provided with a width adjusting structure (4) inside.

3. The coating device for pinching off according to claim 2, wherein The width adjusting structure (4) includes a resistance block (403) slidingly installed in the sinking port (303), the resistance block (403) other end is fixed with a connecting plate (402), the connecting plate (402) is fixedly connected with the telescopic end of the electric push rod (401), the electric push rod (401) is installed on the front end of the sink (301).

4. The coating device for pinching off according to claim 1, wherein The moving block (501) both sides are symmetrically provided with adjusting openings (503), the adjusting openings (503) are slidingly installed with adjusting blocks (505), the adjusting blocks (505) are symmetrically installed on both sides of the scraper (504), and the adjusting blocks (505) are connected with the height adjusting assembly (51).

5. The coating device for pinching off according to claim 4, wherein The height adjusting assembly (51) includes a knob (511) installed on the upper end of the moving block (501), the knob (511) lower end is fixedly connected with a screw rod (513) through a connecting rod (512), the screw rod (513) is rotatably installed in the adjusting opening (503) and is threadedly connected with the adjusting block (505), the adjusting block (505) outer wall is provided with a pointer (507), the moving block (501) both sides outer wall are provided with scale markings (508).

6. The coating device for pinching off according to claim 4, wherein The moving block (501) both sides bottom is fixed with a baffle (509), the baffle (509) outer wall is rotatably installed with a pulley (506).

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