Lithium iron phosphate battery pole piece coating device

Abstract

The utility model provides a lithium iron phosphate battery pole piece coating device, which relates to the technical field of coating devices and comprises an equipment table, an unwinding roller is rotatably connected onto the equipment table, a winding roller is rotatably connected onto the equipment table, a first motor is fixedly connected onto the equipment table, and a second motor is fixedly connected onto the equipment table. An output shaft of the first motor is fixedly connected with the winding roller, a drying box is fixedly connected to the equipment table, a plurality of heating pipes are arranged in the drying box, two equipment plates are fixedly connected to the equipment table, a second motor is fixedly connected to one of the equipment plates, and the second motor is fixedly connected to the other of the equipment plates. The pole piece coating device solves the problems that the coating roller in the existing coating device is usually used for directly coating a pole piece base body after absorbing coating in a slurry tank, redundant slurry always exists on the coating roller, the thickness uniformity is poor, and the coating roller cannot be used for coating the pole piece base body after the pole piece is dried. And the surface is not flat.

Description

Technical Field

[0001] The utility model relates to the technical field of coating devices, in particular to a coating device for a lithium iron phosphate battery pole piece. Background Art

[0002] Coating machines are mainly used for surface coating production of films, papers, etc. This machine coats the rolled substrate with a layer of glue, paint or ink with specific functions, and cuts it into sheets or rolls it up after drying. Lithium iron phosphate battery refers to a lithium-ion battery that uses lithium iron phosphate as the positive electrode material. In the manufacturing process of lithium-ion batteries, coating is the core process and the main process step that determines battery performance.

[0003] When using the current lithium iron phosphate battery pole piece coating device, the staff often finds that the coating roller in the current coating device usually absorbs the coating in the slurry tank and directly coats it on the pole piece substrate. This coating roller often has excess slurry and poor thickness uniformity, which causes the pole piece to have an uneven surface after drying. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a lithium iron phosphate battery pole piece coating device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lithium iron phosphate battery pole piece coating device, comprising an equipment table, a unwinding roller is rotatably connected to the equipment table, a winding roller is rotatably connected to the equipment table, a first motor is fixedly connected to the equipment table, the output shaft of the first motor is fixedly connected to the winding roller, a drying box is fixedly connected to the equipment table, a plurality of heating tubes are arranged in the drying box, two equipment plates are fixedly connected to the equipment table, a second motor is fixedly connected to one of the equipment plates, a coating roller is fixedly connected to the output shaft of the second motor, the coating roller is rotatably connected to the equipment plates, a supporting roller is rotatably connected to the two equipment plates, a discharging hopper is fixedly connected to the two equipment plates, a leveling structure is arranged on the equipment plate, the leveling structure is mainly composed of a leveling roller, the two ends of the leveling roller are respectively rotatably connected to the two equipment plates, the coating roller and the leveling roller are fixedly connected with gears, and the two gears are meshingly connected.

[0006] The effects achieved by the above components are as follows: the electrode substrate passes through the coating roller and the support roller, the coating is placed in the discharge hopper, the coating falls from the discharge port of the discharge hopper onto the coating roller, the second motor is started, the output shaft of the second motor drives the coating roller to rotate, and then the electrode substrate is coated, the coated electrode substrate passes through the drying box, the heating tube is started to dry the coating, and finally it is wound on the winding roller, the first motor is started, the output shaft of the first motor drives the winding roller to rotate, and the electrode substrate is wound, and when the coating falls on the coating roller, the second motor drives the coating roller to rotate. The cloth roller rotates, which in turn drives a gear to rotate, further drives another gear to rotate in the opposite direction, and then drives the leveling roller and the coating roller to rotate in the opposite direction. Therefore, the leveling roller can apply the paint on the coating roller to make it more even and smoother, thereby enhancing the uniformity and smoothness of the coating, thereby avoiding the problem that the coating roller in the current coating device usually absorbs the paint in the slurry tank and then directly coats it on the electrode substrate. This type of coating roller often has excess slurry and poor thickness uniformity, which causes the electrode to have an uneven surface after drying.

[0007] Preferably, both of the equipment plates are provided with a slide groove, and a scraper is slidably connected in the two slide grooves.

[0008] The effect achieved by the above components is: after coating is completed, the paint can be scraped flat by the scraper, and the height of the scraper can be adjusted according to the thickness of the paint.

[0009] Preferably, a threaded rod is rotatably connected in one of the slide grooves, a crank is rotatably connected on one of the equipment plates, the crank is fixedly connected to the threaded rod, and the threaded rod is threadably connected to the scraper.

[0010] The effect achieved by the above components is: the crank handle drives the threaded rod to rotate, and since the scraper slides in a limited position in the slide groove, rotating the threaded rod can drive the scraper to slide, making the adjustment operation more convenient.

[0011] Preferably, a slide rod is fixedly connected in one of the slide grooves, the slide rod is slidably connected to the scraper, and two pressure rollers are rotatably connected to the two equipment plates.

[0012] The effects achieved by the above components are: the slide bar can make the sliding process of the scraper more stable, and the pole piece substrate after scraping is passed through between two pressure rollers, and the pressure rollers can compact the coating, further improving the coating effect.

[0013] Preferably, a recovery structure is provided on the equipment platform, and the recovery structure is mainly composed of a recovery box, and the recovery box is fixedly connected to the equipment platform.

[0014] The effect achieved by the above components is that the excess paint falls into the recycling box and can be collected to prevent waste.

[0015] Preferably, a liquid pump is fixedly connected to the recovery box, and a liquid guide tube is fixedly connected to the output end of the liquid pump, and one end of the liquid guide tube is located above the discharge hopper.

[0016] The effect achieved by the above components is: the liquid pump is started, and the liquid pump can transport the collected paint to the discharge hopper for use.

[0017] Preferably, two sliding plates are slidably connected in the discharge hopper, a bidirectional screw is rotatably connected in the discharge hopper, the bidirectional screw is threadedly connected to the two sliding plates, and the two sections of threads on the bidirectional screw are in opposite directions.

[0018] The effect achieved by the above components is: the two sliding plates can be slid to adjust the size of the discharge port to avoid wasting paint when the coating width is small. Since the sliding plates slide within a limited position in the discharge hopper, rotating the bidirectional screw can drive the two sliding plates to slide. Since the two sections of the thread on the bidirectional screw are in opposite directions, rotating the bidirectional screw can drive the two sliding plates to move closer to or away from each other.

[0019] Preferably, a third motor is fixedly connected to the discharge hopper, and an output shaft of the third motor is fixedly connected to the bidirectional screw.

[0020] The effects achieved by the above components are: starting the third motor, and the output shaft of the third motor drives the bidirectional screw to rotate, making the operation more convenient.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are that, in the utility model, by setting a leveling structure, when the paint falls on the coating roller, the second motor drives the coating roller to rotate, thereby driving a gear to rotate, further driving another gear to rotate in the opposite direction, and then driving the leveling roller and the coating roller to rotate in the opposite direction, so the leveling roller can apply the paint on the coating roller to make it more uniform and flat, thereby enhancing the uniformity and flatness of the coating, and after the coating is completed, the scraper can scrape the paint flat, and the height of the scraper can be adjusted according to the thickness of the paint, and the crank can be turned. The crank drives the threaded rod to rotate. Since the scraper slides in a limited position in the slide groove, rotating the threaded rod can drive the scraper to slide, making the adjustment operation more convenient. The slide rod can make the sliding process of the scraper more stable. The scraped pole piece substrate passes through two pressure rollers. The pressure rollers can compact the coating and further improve the coating effect, thereby avoiding the problem that the coating roller in the current coating device usually absorbs the coating in the slurry tank and then directly coats it on the pole piece substrate. This coating roller often has excess slurry and poor thickness uniformity, which causes the pole piece to have an uneven surface after drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a lithium iron phosphate battery pole piece coating device;

[0023] Figure 2 This is a three-dimensional structural schematic diagram of another perspective of a lithium iron phosphate battery pole piece coating device proposed by the utility model;

[0024] Figure 3 This is a partial schematic diagram of a flat structure of a lithium iron phosphate battery pole piece coating device proposed by the utility model;

[0025] Figure 4 The utility model provides a partial schematic diagram of a circulation structure of a lithium iron phosphate battery pole piece coating device.

[0026] Legend: 1. Equipment table; 2. Unwinding roller; 3. Winding roller; 4. First motor; 5. Drying box; 6. Equipment plate; 7. Coating roller; 8. Leveling structure; 81. Leveling roller; 82. Gear; 83. Slide; 84. Scraper; 85. Threaded rod; 86. Crank; 87. Slide rod; 88. Pressing roller; 9. Recovery structure; 91. Recovery box; 92. Liquid pump; 93. Liquid guide tube; 94. Sliding plate; 95. Bidirectional screw; 96. Third motor; 10. Discharge hopper; 11. Second motor; 12. Support roller. DETAILED DESCRIPTION

[0027] Embodiment 1, as Figure 1 and Figure 3 As shown, a lithium iron phosphate battery pole piece coating device includes an equipment table 1, a unwinding roller 2 is rotatably connected to the equipment table 1, a winding roller 3 is rotatably connected to the equipment table 1, a first motor 4 is fixedly connected to the equipment table 1, the output shaft of the first motor 4 is fixedly connected to the winding roller 3, a drying box 5 is fixedly connected to the equipment table 1, a plurality of heating tubes are arranged in the drying box 5, two equipment plates 6 are fixedly connected to the equipment table 1, a second motor 11 is fixedly connected to one equipment plate 6, a coating roller 7 is fixedly connected to the output shaft of the second motor 11, the coating roller 7 is rotatably connected to the equipment plate 6, a support roller 12 is rotatably connected to the two equipment plates 6, and a discharge hopper 10 is fixedly connected to the two equipment plates 6.

[0028] Reference Figure 1-3, a leveling structure 8 is provided on the equipment plate 6, and the leveling structure 8 is mainly composed of a leveling roller 81. The two ends of the leveling roller 81 are respectively rotatably connected to the two equipment plates 6. The coating roller 7 and the leveling roller 81 are fixedly connected with a gear 82. The two gears 82 are meshed and connected. The electrode substrate passes through the coating roller 7 and the support roller 12, and the coating is placed in the discharge hopper 10. The coating falls from the discharge port of the discharge hopper 10 onto the coating roller 7, and the second motor 11 is started. The output shaft of the second motor 11 drives the coating roller 7 to rotate, and then the electrode substrate is coated. The coated electrode substrate passes through the drying box 5 and is started. The heating tube dries the paint, and finally winds it around the winding roller 3, starts the first motor 4, and the output shaft of the first motor 4 drives the winding roller 3 to rotate, and winds the electrode substrate. When the paint falls on the coating roller 7, the second motor 11 drives the coating roller 7 to rotate, and then drives a gear 82 to rotate, and further drives another gear 82 to rotate in the opposite direction, and then drives the leveling roller 81 to rotate in the opposite direction to the coating roller 7. Therefore, the leveling roller 81 can apply the paint on the coating roller 7 to make it more uniform and smooth, thereby enhancing the uniformity and smoothness of the coating, thereby avoiding the coating roller 7 in the current coating device. Usually, the coating in the slurry tank is sucked and directly coated on the electrode substrate. Such coating roller 7 often has excess slurry and poor thickness uniformity, which causes the surface of the electrode to be uneven after drying. Both equipment plates 6 are provided with slide grooves 83, and scrapers 84 are slidably connected in the two slide grooves 83. After coating, the scrapers 84 pass through the scrapers 84, and the scrapers 84 can scrape the coating flat, and the height of the scrapers 84 can be adjusted according to the thickness of the coating. A threaded rod 85 is rotatably connected in one slide groove 83, and a crank 86 is rotatably connected on one equipment plate 6. The crank 86 is fixedly connected to the threaded rod 85. Then, the threaded rod 85 is threadedly connected to the scraper 84, and the crank 86 is turned, and the crank 86 drives the threaded rod 85 to rotate. Since the scraper 84 slides in the limited position in the slide groove 83, rotating the threaded rod 85 can drive the scraper 84 to slide, making the adjustment operation more convenient. A slide rod 87 is fixedly connected in a slide groove 83, and the slide rod 87 is slidably connected to the scraper 84. Two pressure rollers 88 are connected to the two equipment plates 6 for rotation together. The slide rod 87 can make the sliding process of the scraper 84 more stable. The pole piece substrate after scraping is passed through the two pressure rollers 88, and the pressure rollers 88 can compact the coating, further improving the coating effect.

[0029] Reference Figure 2-4A recovery structure 9 is provided on the equipment platform 1. The recovery structure 9 is mainly composed of a recovery box 91. The recovery box 91 is fixedly connected to the equipment platform 1. Excess paint falls into the recovery box 91 and can be collected to prevent waste. A liquid pump 92 is fixedly connected to the recovery box 91. The output end of the liquid pump 92 is fixedly connected to a liquid guide tube 93. One end of the liquid guide tube 93 is located above the discharge hopper 10. The liquid pump 92 is started, and the liquid pump 92 can transport the collected paint to the discharge hopper 10 for use. Two sliding plates 94 are slidably connected in the discharge hopper 10. A bidirectional screw 95 is rotatably connected in the discharge hopper 10. The bidirectional screw 95 is threadedly connected to the two sliding plates 94. The bidirectional screw The two sections of threads on 95 are in opposite directions, and the two sliding plates 94 can be slid to adjust the size of the discharge port to avoid wasting paint when the coating width is small. Since the sliding plate 94 slides in a limited position in the discharge hopper 10, rotating the bidirectional screw 95 can drive the two sliding plates 94 to slide. Since the two sections of threads on the bidirectional screw 95 are in opposite directions, rotating the bidirectional screw 95 can drive the two sliding plates 94 to move closer to or away from each other. A third motor 96 is fixedly connected to the discharge hopper 10, and the output shaft of the third motor 96 is fixedly connected to the bidirectional screw 95. When the third motor 96 is started, the output shaft of the third motor 96 drives the bidirectional screw 95 to rotate, making the operation more convenient.

[0030] Working principle: the electrode substrate passes through the coating roller 7 and the support roller 12, the coating is placed in the discharge hopper 10, the coating falls from the discharge port of the discharge hopper 10 onto the coating roller 7, the second motor 11 is started, the output shaft of the second motor 11 drives the coating roller 7 to rotate, and then the electrode substrate is coated. The coated electrode substrate passes through the drying box 5, the heating tube is started to dry the coating, and finally it is wound on the winding roller 3, the first motor 4 is started, the output shaft of the first motor 4 drives the winding roller 3 to rotate, and the electrode substrate is wound. When the coating falls on the coating roller 7, the second motor 11 drives the coating roller 7 rotates, thereby driving a gear 82 to rotate, further driving another gear 82 to rotate in the opposite direction, and then driving the leveling roller 81 to rotate in the opposite direction with the coating roller 7, so that the leveling roller 81 can apply the coating on the coating roller 7 to make it more uniform and smooth, thereby enhancing the uniformity and smoothness of the coating, thereby avoiding the situation that the coating roller 7 in the current coating device usually absorbs the coating in the slurry tank and then directly coats it on the electrode substrate, such coating roller 7 often has excess slurry and poor thickness uniformity, which causes the surface of the electrode to be uneven after drying, and after coating is completed The scraper 84 can scrape the paint flat, and the height of the scraper 84 can be adjusted according to the thickness of the paint. The crank 86 is turned, and the crank 86 drives the threaded rod 85 to rotate. Since the scraper 84 slides in the slide groove 83, the rotation of the threaded rod 85 can drive the scraper 84 to slide, making the adjustment operation more convenient. The slide bar 87 can make the sliding process of the scraper 84 more stable. The pole piece substrate after scraping is passed between two pressure rollers 88, and the pressure rollers 88 can compact the paint, further improving the coating effect. The excess paint falls into the recovery box 91, which can be collected to prevent waste, and the liquid pump is started. 92, the liquid pump 92 can transport the collected paint to the discharge hopper 10 for use, and the two sliding plates 94 can be slid to adjust the size of the discharge port to avoid wasting paint when the coating width is small. Since the sliding plate 94 slides in a limited position in the discharge hopper 10, rotating the bidirectional screw 95 can drive the two sliding plates 94 to slide. Since the two sections of the thread on the bidirectional screw 95 are in opposite directions, rotating the bidirectional screw 95 can drive the two sliding plates 94 to move closer to or away from each other, and start the third motor 96. The output shaft of the third motor 96 drives the bidirectional screw 95 to rotate, making the operation more convenient.

[0031] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A lithium iron phosphate battery electrode coating device, comprising an equipment table (1), characterized in that: The equipment platform (1) is rotatably connected to a reeling roller (2), the equipment platform (1) is rotatably connected to a reeling roller (3), the equipment platform (1) is fixedly connected to a first motor (4), the output shaft of the first motor (4) is fixedly connected to the reeling roller (3), the equipment platform (1) is fixedly connected to a drying box (5), a plurality of heating tubes are arranged in the drying box (5), two equipment plates (6) are fixedly connected to the equipment platform (1), one of the equipment plates (6) is fixedly connected to a second motor (11), the output shaft of the second motor (11) is fixedly connected to a coating tube (2), and the coating tube (2) is fixedly connected to the coating tube (3). A cloth roller (7), the coating roller (7) is rotatably connected to the equipment plate (6), a support roller (12) is rotatably connected to the two equipment plates (6), a discharge hopper (10) is fixedly connected to the two equipment plates (6), a leveling structure (8) is provided on the equipment plate (6), the leveling structure (8) is mainly composed of a leveling roller (81), the two ends of the leveling roller (81) are respectively rotatably connected to the two equipment plates (6), the coating roller (7) and the leveling roller (81) are fixedly connected to gears (82), and the two gears (82) are meshingly connected.

2. The lithium iron phosphate battery pole piece coating device according to claim 1, characterized in that: A sliding groove (83) is provided on each of the two equipment plates (6), and a scraper (84) is slidably connected in the two sliding grooves (83).

3. The lithium iron phosphate battery pole piece coating device according to claim 2, characterized in that: A threaded rod (85) is rotatably connected in one of the slide grooves (83), a crank (86) is rotatably connected on one of the equipment plates (6), the crank (86) is fixedly connected to the threaded rod (85), and the threaded rod (85) is threadably connected to the scraper (84).

4. The lithium iron phosphate battery pole piece coating device according to claim 3, characterized in that: A sliding rod (87) is fixedly connected in one of the sliding grooves (83), and the sliding rod (87) is slidably connected to the scraper (84). Two pressing rollers (88) are rotatably connected to the two equipment plates (6).

5. The lithium iron phosphate battery pole piece coating device according to claim 4, characterized in that: A recovery structure (9) is provided on the equipment platform (1), wherein the recovery structure (9) is mainly composed of a recovery box (91), and the recovery box (91) is fixedly connected to the equipment platform (1).

6. The lithium iron phosphate battery pole piece coating device according to claim 5, characterized in that: The recovery box (91) is fixedly connected to a liquid pump (92), the output end of the liquid pump (92) is fixedly connected to a liquid guide tube (93), and one end of the liquid guide tube (93) is located above the discharge hopper (10).

7. The lithium iron phosphate battery pole piece coating device according to claim 6, characterized in that: Two sliding plates (94) are slidably connected to the discharge hopper (10), and a bidirectional screw (95) is rotatably connected to the discharge hopper (10). The bidirectional screw (95) is threadedly connected to the two sliding plates (94), and the two sections of thread on the bidirectional screw (95) are in opposite directions.

8. The lithium iron phosphate battery pole piece coating device according to claim 7, characterized in that: A third motor (96) is fixedly connected to the discharge hopper (10), and an output shaft of the third motor (96) is fixedly connected to the bidirectional screw (95).

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