A sodium ion battery coating device and coating method thereof

Abstract

The present application provides a sodium ion battery coating device and a coating method thereof, which relate to the field of sodium ion battery production. The device comprises: a base, a reel and a reel, wherein the reel and the reel are both arranged on the base, and a feeding assembly is arranged on the base. The present application has the effect of ensuring that the slurry is not easy to solidify.

Description

Technical Field

[0001] The present application relates to the field of sodium ion battery production, and in particular to a sodium ion battery coating device and a coating method thereof. Background Art

[0002] Sodium-ion battery is a secondary battery (rechargeable battery) that mainly relies on the movement of sodium ions between the positive and negative electrodes to work. It has a similar working principle to lithium-ion batteries and is a "rocking chair" battery.

[0003] Sodium-ion battery coating is a key step in the production process of sodium-ion batteries, which involves coating the positive and negative electrode slurries on metal foil respectively.

[0004] At present, in the related technology, a Chinese patent with the authorization publication number CN111715461A discloses a universal electrode coating system for lithium / sodium ion batteries, which includes a support plate, a bottom plate, a brushing device and a linear moving mechanism. The support plate is provided with a base, and a slot is provided in the concave side of the bottom plate. A buffer device is provided in the slot. When the support plate is inserted into the slot, it has a compressive force on the buffer device; a clamping device is provided outside the slot, and the clamping device is used to limit the ejection of the support plate; the brushing device includes a roller arranged above the bottom plate, and a roller shaft is provided inside the roller, and can rotate around the roller shaft; the two ends of the roller shaft extend outside the roller and are respectively fixedly connected to the lifting structure; the linear moving mechanism includes a screw rod, which is arranged on both sides of the bottom plate, and a slider is slidably provided on the screw rod, and the slider can pull the brushing device to slide through the connecting member. The application prevents the displacement of the support plate and the battery base during the coating process through the buffer device and the clamping device, thereby ensuring the stability of the coating process.

[0005] However, in the above technology, if the time continues to increase, the slurry will tend to solidify slowly, resulting in poor fluidity of the slurry, which will increase the difficulty of coating. Summary of the invention

[0006] In order to improve the problems existing in the above-mentioned technology, the present application provides a sodium ion battery coating device and a coating method thereof.

[0007] In the first aspect, the present application provides a sodium ion battery coating device and a coating method thereof, which adopts the following technical solution: A sodium ion battery coating device comprises: a base, a reel and a reel, wherein the reel and the reel are both arranged on the base, and a feeding assembly is arranged on the base; The feeding assembly includes: a support frame, a material storage box, a heating box, a feeding box, a heating pipe, a material pump and a feeding pipe. The support frame is fixed on the base, the feeding box is installed on the support frame, the material pump is connected to the material storage box, one end of the material pump is communicated with the feeding box, and the other end is connected to the material pump, the heating box is fixed on the base, the material storage box is installed in the heating box, and the heating pipe is fixed in the heating box.

[0008] By adopting the above technical solution, during coating, the heating tube is started to heat the water in the heating box, and through the transfer of heat, the storage box can maintain a certain temperature, so that the slurry in the storage box is not easy to become thick due to too low temperature, so as not to reduce fluidity, thereby not increasing the difficulty of coating.

[0009] Optionally, a coating assembly is provided on the loading box, and the coating assembly includes: a regulating part, a changing part and a coating part, and the coating part includes: a discharge plate, a scraper, a pressure plate, a downward pressure cylinder, a sealing plate and a supporting spring, the discharge plate is installed on the loading box, and a discharge hole is penetrated on the discharge plate, and a discharge hole is penetrated on the loading box, the pressure plate is arranged in the loading box, the downward pressure cylinder is installed on the loading box, and the output shaft of the downward pressure cylinder is fixedly connected to the pressure plate, a mounting hole is opened in the discharge hole, one end of the sealing plate is hingedly installed in the mounting hole, the supporting spring is fixed between the sealing plate and the inner wall of the discharge hole, the scraper is arranged on the discharge plate, the changing part is arranged between the discharge plate and the loading box, and the regulating part is arranged between the discharge plate and the changing part.

[0010] By adopting the above technical solution, the downward pressure cylinder is started to push the pressure plate downward, thereby pressing the slurry in the feeding box into the discharge hole; finally, the slurry is sprayed out from the discharge hole and falls onto the substrate; at the same time, the scraper will flatten the slurry that falls onto the substrate, thereby performing coating work.

[0011] Optionally, the changing part includes: a changing plate, a movable plate and a connecting plate, the inner wall of the discharge box is provided with a movable groove, the movable plate is slidably installed in the movable groove, the changing plate is slidably installed in the discharge hole, one end of the connecting plate is hinged to the movable plate, and the other end is hinged to the changing plate, and the regulating part is arranged between the discharge plate and the changing plate.

[0012] By adopting the above technical solution, before coating, the distance between the two variable plates is changed according to the width of the substrate, so that the discharge length of the slurry can be consistent with the width of the substrate, thereby improving applicability.

[0013] Optionally, the regulating part includes: a regulating cylinder, a regulating rod, a driving rod, a driving gear and a driven gear, the regulating cylinder is installed on the changing plate, one end of the regulating rod is threadedly connected to the regulating cylinder, and the other end is rotatably installed on the discharge plate, the driving rod is rotatably installed on the discharge plate, the driving gear is coaxially sleeved on the driving rod, the driven gear is coaxially sleeved on the regulating rod, and the driving gear is meshed with the driven gear.

[0014] By adopting the above technical solution, before coating, the driving rod is rotated according to the width of the substrate to drive the active gear to drive the driven gear and the regulating rod to rotate in turn; the rotation of the regulating rod will control the movement of the regulating cylinder, thereby pushing the changing plate to move to change the distance between the two changing plates.

[0015] Optionally, the changing portion further includes: a blocking belt, wherein the blocking belt is fixed between the moving plate and the connecting plate and between the changing plate and the connecting plate.

[0016] By adopting the above technical solution, the blocking belt is used to shield the connection between the moving plate and the connecting plate and between the changing plate and the connecting plate, thereby preventing slurry leakage.

[0017] Optionally, an equal adjustment component is arranged between the scraper and the sealing plate, and the equal adjustment component includes: an equal adjustment sleeve, an equal adjustment rod, an equal adjustment gear and an equal adjustment rack. The inner wall of the discharge hole is penetrated by a through hole, and the equal adjustment rod is rotatably installed on the discharge plate. One end of the equal adjustment sleeve abuts against the sealing plate, and the other end penetrates the through hole and is threadedly sleeved on the equal adjustment rod. The equal adjustment gear is coaxially sleeved on the equal adjustment rod, and the equal adjustment rack is slidably installed on the discharge plate, and the scraper is fixedly connected to the equal adjustment rack.

[0018] By adopting the above technical solution, during coating, the equal-adjustment rack is pulled up to drive the equal-adjustment gear to drive the equal-adjustment rod to rotate, so as to drive the equal-adjustment sleeve away from the sealing plate, so that the sealing plate can open a larger space to allow more slurry to fall onto the substrate; at the same time, the scraper moves up, so as to increase the coating thickness; moving the equal-adjustment rack down does the opposite.

[0019] Optionally, a recovery component is arranged between the changing plate and the winding roller, and the recovery component includes: a recovery part, a one-way part and an extrusion part. The recovery part includes: a fixed rod, a recovery box, a recovery pipe and a guide plate. A recovery port is opened on the top of the recovery box, and the guide plate is obliquely fixed to the recovery box. One end of the fixed rod is fixed to the recovery box, and the other end is fixed to the changing plate. A recovery hole is opened through the recovery box, one end of the recovery pipe is connected with the recovery hole, and the other end is connected with the storage box. The one-way part is arranged in the recovery hole, and the extrusion part is arranged between the winding roller and the recovery box.

[0020] By adopting the above technical solution, during coating, excess slurry will fall onto the guide plate, then flow from the guide plate to the recovery port, and finally fall into the recovery box for collection.

[0021] Optionally, the one-way part includes: a fixed block, a blocking block, a mesh plate and a connecting spring, the fixed block is fixed in the recovery hole, and a one-way hole is opened through the fixed block, the blocking block is arranged in the one-way hole, the mesh plate is fixed in the one-way hole, and the connecting spring is fixed between the blocking block and the mesh plate.

[0022] By adopting the above technical solution, during the extrusion process, the slurry passes through the mesh plate and squeezes the block so that the block extends out to the one-way hole, so that the slurry can pass through the one-way hole and flow into the recovery pipe; when not extruded, the connecting spring resets the block, thereby continuing to keep the one-way hole blocked, so that the slurry in the recovery pipe is not easy to flow back, thereby ensuring the recovery efficiency.

[0023] Optionally, the extrusion part includes: a transmission belt, a rotating rod, a rotating plate, a connecting rod, a guide rail, a slider, an extrusion plate and a blocking column, the rotating plate is rotatably mounted on the base via the rotating rod, the transmission belt transmission is arranged between the rotating rod and the winding roller, the guide rail is fixed on the base, the extrusion plate is arranged in the recycling box, the bottom wall of the recycling box is penetrated by a through groove, one end of the slider is slidably mounted on the guide rail, the other end is penetrated by the through groove and is slidably connected with the extrusion plate, one end of the connecting rod is rotatably mounted on the rotating plate, and the other end is rotatably mounted on the slider, the blocking column is fixed on the extrusion plate, and the blocking column is provided with an inclined surface.

[0024] By adopting the above technical solution, during the operation of the winding roller, the transmission belt will drive the rotating rod to rotate, that is, drive the rotating plate to rotate; after the rotating plate rotates, the connecting rod will pull the slider to reciprocate in the vertical direction, so that during the rising process of the slider, the extrusion plate will also rise synchronously. During this process, the blocking column can penetrate the recovery port to close the recovery port, so that the extrusion plate can press the slurry into the recovery hole, and then enter the recovery pipe from the recovery hole, so that it flows into the storage box for recovery and storage.

[0025] In a second aspect, the present application provides a coating method for an ion battery coating device, which adopts the following technical solution: A coating method for a sodium ion battery coating device comprises the following steps: S1: Start the pumping pump and convey the slurry into the upper material box through the feeding pipe; S2: Start the downward pressure cylinder to press down the slurry in the upper material box so that the slurry falls onto the substrate; S3: When the substrate is being rolled up, the scraper will flatten the slurry on the substrate to complete the coating operation.

[0026] By adopting the above technical solution, the coating difficulty can be reduced.

[0027] In summary, the present application includes at least one of the following beneficial effects: 1. During coating, start the heating tube to heat the water in the heating box. Through the transfer of heat, the storage box can maintain a certain temperature, so that the slurry in the storage box is not easy to become thick due to too low temperature, so as not to reduce the fluidity, thereby increasing the difficulty of coating.

[0028] 2. Start the downward pressure cylinder to push the pressure plate downward, thereby pressing the slurry in the feeding box into the discharge hole; finally, the slurry is sprayed out from the discharge hole and falls onto the substrate; at the same time, the scraper will flatten the slurry that falls onto the substrate, thereby starting the coating work.

[0029] 3. Before coating, change the distance between the two variable plates according to the width of the substrate so that the discharge length of the slurry can be consistent with the width of the substrate to improve applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the structure according to an embodiment of the present application; Figure 2 yes Figure 1 A schematic top view of Figure 3 is along Figure 2 A schematic cross-sectional view taken along the cutting line AA in FIG. Figure 4 yes Figure 3 A schematic partial enlarged view of part B; Figure 5 is along Figure 2 A schematic cross-sectional view taken along the cutting line CC in FIG. Figure 6 yes Figure 5 A schematic partial enlarged view of section D in the middle; Figure 7 is along Figure 2 A schematic cross-sectional view taken along the cutting line EE in FIG. Figure 8 yes Figure 7 Schematic partial enlarged view of part F.

[0031] In the figure: 1. base; 11. unwinding roller; 12. winding roller; 2. feeding assembly; 21. support frame; 22. storage box; 23. heating box; 24. feeding box; 241. feeding hole; 242. moving slot; 23. heating pipe; 24. pump; 25. feeding pipe; 3. coating part; 31. discharging plate; 311. discharging hole; 312. mounting hole; 313. drilling hole; 32. scraper; 33. pressing plate; 34. pressing cylinder; 35. sealing plate; 36. supporting spring; 4. changing part; 41. changing plate; 42. moving plate; 43. connecting plate; 44. blocking belt; 5. regulating part; 51. regulating cylinder; 52. Control rod; 53, driving rod; 54, driving gear; 55, driven gear; 6, equal adjustment component; 61, equal adjustment sleeve; 62, equal adjustment rod; 63, equal adjustment gear; 64, equal adjustment rack; 7, recovery part; 71, fixed rod; 72, recovery box; 721, recovery port; 722, recovery hole; 73, recovery pipe; 74, guide plate; 8, one-way part; 81, fixed block; 811, one-way hole; 82, blocking block; 83, mesh plate; 84, connecting spring; 9, extrusion part; 91, transmission belt; 92, rotating rod; 93, rotating plate; 94, connecting rod; 95, guide rail; 96, slider; 97, extrusion plate; 98, blocking column. DETAILED DESCRIPTION

[0032] The present application provides a sodium ion battery coating device.

[0033] See also Figure 1 A sodium ion battery coating device includes: a base 1, a unwinding roller 11 and a winding roller 12, the unwinding roller 11 and the winding roller 12 are both rotatably installed on the top wall of the base 1, and a motor for driving the winding roller 12 to rotate is arranged on the base 1.

[0034] See also Figure 1 The top wall of the base 1 is provided with a feeding assembly 2, which includes: a support frame 21, a material storage box 22, a heating box 23, a feeding box 24, a heating pipe 23, a material pump 24 and a feeding pipe 25. The support frame 21 is fixed on the top wall of the base 1, and the support frame 21 is "U" shaped, and the feeding box 24 is fixed on the support frame 21. The heating box 23 is fixed on the top wall of the base 1, and the top is open. The heating box 23 is used to store water; the heating pipe 23 is fixedly installed in the heating box 23.

[0035] See also Figure 1 The storage box 22 is installed in the heating box 23. The storage box 22 is used to store slurry. When coating, the heating tube 23 is started to heat the water in the heating box 23. Through the transfer of heat, the storage box 22 can maintain a certain temperature, so that the slurry in the storage box 22 is not easy to become thick due to too low temperature, so as not to reduce fluidity, thereby not increasing the difficulty of coating.

[0036] See also Figure 2 , Figure 3 and Figure 4 A coating component is provided on the loading box 24, and the coating component is used to evenly apply the slurry to the substrate; the coating component includes: a coating part 3.

[0037] See also Figure 3 and Figure 4 The coating part 3 includes: a discharge plate 31, a scraper 32, a pressing plate 33, a pressing cylinder 34, a sealing plate 35 and a supporting spring 36. The discharge plate 31 is fixed to the bottom wall of the loading box 24, and a discharge hole 311 is formed through the bottom wall of the discharge plate 31 along the length direction; a discharge hole 241 is formed through the bottom wall of the loading box 24 along the length direction, and the loading hole is connected to the discharge hole 311, and the internal width of the discharge hole 241 and the loading box 24 is equal to the width of the discharge hole 311. The scraper 32 is arranged on the side wall of the discharge plate 31, and the scraper 32 is located on the side of the discharge plate 31 close to the winding roller 12.

[0038] See also Figure 3 and Figure 4 , the pressing plate 33 is arranged in the upper material box 24 and can move up and down in the vertical direction; the downward pressing cylinder 34 is installed on the top wall of the lower material box, and the output shaft of the downward pressing cylinder 34 is fixedly connected to the pressing plate 33. When coating, start the pumping pump 24 to pump the slurry in the storage box 22 into the upper material box 24 until the slurry in the upper material box 24 is filled; then, start the downward pressing cylinder 34 to push the pressing plate 33 downward, so as to press the slurry in the upper material box 24 into the discharge hole 311; finally, the slurry is sprayed out from the discharge hole 311 and falls on the substrate; at the same time, the scraper 32 will flatten the slurry that falls on the substrate, so as to perform coating work. In the embodiment of the present application, after coating, the slurry actually needs to be dried, so a drying device (not shown in the figure) needs to be set.

[0039] See also Figure 3 and Figure 4 The inner wall of the discharge hole 311 near the scraper 32 is provided with a mounting hole 312. One end of the sealing plate 35 is hingedly mounted in the mounting hole 312, and the other end is in contact with the inner wall of the discharge hole 311. The sealing plate 35 is used to block the discharge hole 311, so that when coating is not required, the slurry is not easy to flow out of the discharge hole 311. The support spring 36 is fixed between the bottom wall of the sealing plate 35 and the inner side wall of the discharge hole 311, and in the embodiment of the present application, a plurality of support springs 36 are provided along the length direction of the sealing plate 35. When coating is not required, the support spring 36 strongly supports the sealing plate 35 to ensure that the sealing plate 35 blocks the discharge hole 311.

[0040] See also Figure 5 and Figure 6 The coating component also includes: a regulating part 5 and a changing part 4.

[0041] See also Figure 5 and Figure 6 In the embodiment of the present application, there are two change parts 4, which include: a change plate 41, a moving plate 42 and a connecting plate 43. The inner side walls of both ends of the unloading box along the length direction and along the vertical direction are provided with moving grooves 242. The moving plate 42 is slidably installed in the moving grooves 242 and slides in the vertical direction. The change plate 41 is slidably installed in the discharge hole 311 and moves along the length direction of the discharge hole 311; one end of the connecting plate 43 is hingedly installed on the bottom wall of the moving plate 42, and the other end is hingedly installed on the top wall of the change plate 41. Before coating, the spacing between the two change plates 41 is changed according to the width of the substrate, so that the discharge length of the slurry can be consistent with the width of the substrate to improve applicability.

[0042] See also Figure 5 and Figure 6 Furthermore, the changing part 4 also includes: a blocking belt 44, which is fixed between the moving plate 42 and the connecting plate 43 and between the changing plate 41 and the connecting plate 43. In the embodiment of the present application, the blocking belt 44 can be made of rubber or other materials. The blocking belt 44 is used to block the connection between the moving plate 42 and the connecting plate 43 and between the changing plate 41 and the connecting plate 43, thereby preventing slurry leakage.

[0043] See also Figure 1 , Figure 5 and Figure 6 The regulating part 5 includes: a regulating cylinder 51, a regulating rod 52, a driving rod 53, a driving gear 54 and a driven gear 55. The regulating cylinder 51 is fixedly mounted on the side wall of the changing plate 41; one end of the regulating rod 52 is rotatably mounted on the discharge plate 31, and the other end is threadedly connected in the regulating cylinder 51. The driving rod 53 is rotatably mounted on the outer wall of the discharge plate 31, and the driving gear 54 is coaxially sleeved on the driving rod 53; the driven gear 55 is coaxially sleeved on the regulating rod 52, and the driving gear 54 is meshed with the driven gear 55. Before coating, according to the width of the substrate, the driving rod 53 is rotated to drive the driving gear 54 to drive the driven gear 55 and the regulating rod 52 to rotate in turn; the rotation of the regulating rod 52 will control the movement of the regulating cylinder, thereby pushing the changing plate 41 to move, so as to change the distance between the two changing plates 41.

[0044] See also Figure 4 Furthermore, an equal adjustment component 6 is arranged between the scraper 32 and the sealing plate 35, and the equal adjustment component 6 includes: an equal adjustment sleeve 61, an equal adjustment rod 62, an equal adjustment gear 63 and an equal adjustment rack 64. A through hole 313 is formed through the inner wall of the discharge hole 311 close to the winding roller 12, and the through hole 313 is square; one end of the equal adjustment sleeve 61 is close to the bottom wall of the sealing plate 35, and the other end extends to the through hole 313, and the equal adjustment sleeve 61 is square. One end of the equal adjustment rod 62 is rotatably mounted on the discharge plate 31, and the other end is threadedly connected to the equal adjustment sleeve 61.

[0045] See also Figure 4 , the equal adjustment gear 63 is coaxially sleeved on the end of the equal adjustment rod 62 away from the equal adjustment sleeve 61; the equal adjustment rack 64 is slidably installed on the side wall of the discharge plate 31 close to the winding roller 12 and slides in the vertical direction, and the scraper 32 is fixedly connected to the equal adjustment rack 64. During coating, the equal adjustment rack 64 is pulled up to drive the equal adjustment gear 63 to drive the equal adjustment rod 62 to rotate, so as to drive the equal adjustment sleeve 61 away from the sealing plate 35, so that the sealing plate 35 can open a larger space so that more slurry can fall on the substrate; at the same time, the scraper 32 moves up to increase the coating thickness; the equal adjustment rack 64 is moved down, on the contrary, so that less slurry can fall on the substrate, and the scraper 32 moves down to reduce the coating thickness, so as to adapt to the coating requirements of different thicknesses.

[0046] See also Figure 7 and Figure 8 Furthermore, a recovery component is provided between the changing plate 41 and the winding roller 12. During the coating process, the excess slurry may easily fall from both ends of the substrate along the length direction; at this time, the recovery component can recover the excess slurry, thereby achieving the effect of reuse.

[0047] See also Figure 7 and Figure 8 The recycling component includes: a recycling part 7, a one-way part 8 and an extrusion part 9.

[0048] See also Figure 7 and Figure 8 The recovery part 7 includes: a fixed rod 71, a recovery box 72, a recovery pipe 73 and a guide plate 74. One end of the fixed rod 71 is fixedly connected to the change plate 41, and the other end penetrates the discharge plate 31 to extend outward and is fixedly connected to the recovery box 72. A recovery port 721 is penetrated through the top wall of the recovery box 72 and the end away from the fixed rod 71, and a recovery hole 722 is penetrated through the side wall of the recovery box 72 close to the fixed rod 71. One end of the recovery pipe 73 is connected to the storage box 22, and the other end is connected to the recovery hole 722. The guide plate 74 is fixed on the end of the recovery box 72 away from the fixed rod 71, and the end of the guide plate 74 away from the recovery box 72 is tilted upward. During coating, excess slurry will fall onto the guide plate 74, and then flow from the guide plate 74 to the recovery port 721, and finally fall into the recovery box 72 for collection.

[0049] See also Figure 7 and Figure 8The extrusion part 9 includes: a transmission belt 91, a rotating rod 92, a rotating plate 93, a connecting rod 94, a guide rail 95, a slider 96, an extrusion plate 97 and a blocking column 98. The rotating plate 93 is rotatably mounted on the top wall of the base 1 through the rotating rod 92, and the transmission belt 91 is arranged between the winding roller 12 and the rotating rod 92. The extrusion plate 97 is arranged on the recycling box 72 and can move in the vertical direction. A through groove is formed through the bottom wall of the recycling box 72. The guide rail 95 is vertically mounted on the top wall of the base 1; one end of the slider 96 is slidably mounted on the guide rail 95, and the other end is provided with a through groove and is slidably connected to the extrusion plate 97.

[0050] See also Figure 7 and Figure 8 , one end of the connecting rod 94 is rotatably mounted on the rotating plate 93, and the other end is rotatably mounted on the slider 96. The blocking column 98 is fixed on the top wall of the extrusion plate 97, and the top wall of the blocking column 98 is provided with an inclined surface, and the inclined surface is inclined downward near one end of the fixed rod 71. During the operation of the winding roller 12, the transmission belt 91 will drive the rotating rod 92 to rotate, that is, drive the rotating plate 93 to rotate; after the rotating plate 93 rotates, the connecting rod 94 will pull the slider 96 to reciprocate in the vertical direction, so that during the rising process of the slider 96, the extrusion plate 97 also rises synchronously. During this process, the blocking column 98 can penetrate the recovery port 721 to close the recovery port 721, so that the extrusion plate 97 can press the slurry into the recovery hole 722, and then enter the recovery pipe 73 from the recovery hole 722, so that it flows into the storage box 22 for recovery and storage.

[0051] See also Figure 7 and Figure 8 The one-way portion 8 includes: a fixed block 81, a blocking block 82, a mesh plate 83 and a connecting spring 84. The fixed block 81 is fixed in the recovery hole 722, and a one-way hole 811 is penetrated through the side wall of the fixed block 81, and the cross-section of the one-way hole 811 is trapezoidal; the blocking block 82 is arranged in the one-way hole 811, and the blocking block 82 is truncated cone-shaped. The blocking block 82 is used to block the one-way hole 811. The mesh plate 83 is fixed in the one-way hole 811, and the mesh plate 83 is located on the side of the block 82 away from the recovery pipe 73; the connecting spring 84 is fixed between the block 82 and the mesh plate 83. During the extrusion process, the slurry passes through the mesh plate 83 and squeezes the block 82, so that the block 82 extends to the one-way hole 811, so that the slurry can pass through the one-way hole 811 and flow into the recovery pipe 73; when not extruded, the connecting spring 84 resets the block 82, thereby continuing to keep the one-way hole 811 blocked, so that the slurry in the recovery pipe 73 is not easy to flow back and the recovery efficiency is ensured.

[0052] In the embodiment of the present application, the variable plate 41 , the movable plate 42 , the connecting plate 43 , the pressing plate 33 , the blocking column 98 , the extrusion plate 97 and the blocking block 82 may be covered with a rubber sleeve (not shown in the figure) to improve the sealing performance.

[0053] The working principle of a sodium ion battery coating device of the present application when in use is as follows: start the extraction pump 24 to pump the slurry in the storage box 22 into the loading box 24 until the slurry in the loading box 24 is filled; then, start the downward pressure cylinder 34 to push the pressure plate 33 downward, thereby pressing the slurry in the loading box 24 into the discharge hole 311; finally, the slurry is sprayed out from the discharge hole 311 and falls onto the substrate; at the same time, the scraper 32 will flatten the slurry that falls onto the substrate, thereby performing the coating work.

[0054] The present application also provides a coating method for a sodium ion battery coating device.

[0055] A coating method for a sodium ion battery coating device comprises the following steps: S1: Start the pump 24 and deliver the slurry to the upper material box 24 through the feeding pipe 25; S2: Start the downward pressure cylinder 34 to press down the slurry in the upper material box 24 so that the slurry falls onto the substrate; S3: During the process of winding the substrate, the scraper 32 will scrape the slurry on the substrate flat to complete the coating operation.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sodium ion battery coating device, characterized in that: include: A base (1), an unwinding roller (11) and a winding roller (12), wherein the unwinding roller (11) and the winding roller (12) are both arranged on the base (1), and a loading assembly (2) is arranged on the base (1); The feeding assembly (2) comprises: a support frame (21), a material storage box (22), a heating box (23), a feeding box (24), a heating pipe (23), a material extraction pump (24) and a feeding pipe (25); the support frame (21) is fixed on the base (1); the feeding box (24) is installed on the support frame (21); the material extraction pump (24) is connected to the material storage box (22); one end of the material extraction pump (24) is communicated with the feeding box (24) and the other end is connected to the material extraction pump (24); the heating box (23) is fixed on the base (1); the material storage box (22) is installed in the heating box (23); and the heating pipe (23) is fixed in the heating box (23).

2. The sodium ion battery coating device according to claim 1, characterized in that: The loading box (24) is provided with a coating assembly, and the coating assembly includes: a regulating part (5), a changing part (4) and a coating part (3); the coating part (3) includes: a discharge plate (31), a scraper (32), a pressure plate (33), a downward pressure cylinder (34), a sealing plate (35) and a supporting spring (36); the discharge plate (31) is installed on the loading box (24), and a discharge hole (311) is opened through the discharge plate (31); the loading box (24) is opened through a discharge hole (241); the pressure plate (33) is arranged in the loading box (24), and the downward pressure cylinder (34) is installed in the The material discharging hole (311) is provided with a mounting hole (312), one end of the sealing plate (35) is hingedly mounted in the mounting hole (312), the supporting spring (36) is fixed between the sealing plate (35) and the inner wall of the material discharging hole (311), the scraper (32) is arranged on the material discharging plate (31), the changing part (4) is arranged between the material discharging plate (31) and the material discharging box (24), and the regulating part (5) is arranged between the material discharging plate (31) and the changing part (4).

3. The sodium ion battery coating device according to claim 2, characterized in that: The changing part (4) comprises: a changing plate (41), a moving plate (42) and a connecting plate (43); a moving groove (242) is provided on the inner wall of the discharge box; the moving plate (42) is slidably installed in the moving groove (242); the changing plate (41) is slidably installed in the discharge hole (311); one end of the connecting plate (43) is hinged to the moving plate (42) and the other end is hinged to the changing plate (41); the regulating part (5) is arranged between the discharge plate (31) and the changing plate (41).

4. The sodium ion battery coating device according to claim 3, characterized in that: The regulating part (5) comprises: a regulating cylinder (51), a regulating rod (52), a driving rod (53), a driving gear (54) and a driven gear (55); the regulating cylinder (51) is mounted on the changing plate (41); one end of the regulating rod (52) is threadedly connected to the inside of the regulating cylinder (51) and the other end is rotatably mounted on the discharge plate (31); the driving rod (53) is rotatably mounted on the discharge plate (31); the driving gear (54) is coaxially sleeved on the driving rod (53); the driven gear (55) is coaxially sleeved on the regulating rod (52); and the driving gear (54) is meshed with the driven gear (55).

5. The sodium ion battery coating device according to claim 3, characterized in that: The changing portion (4) further comprises: a blocking belt (44), wherein the blocking belt (44) is fixed between the moving plate (42) and the connecting plate (43) and between the changing plate (41) and the connecting plate (43).

6. The sodium ion battery coating device according to claim 2, characterized in that: An equal adjustment component (6) is arranged between the scraper (32) and the sealing plate (35), and the equal adjustment component (6) comprises: an equal adjustment sleeve (61), an equal adjustment rod (62), an equal adjustment gear (63) and an equal adjustment rack (64). The inner wall of the discharge hole (311) is penetrated with a through hole (313), the equal adjustment rod (62) is rotatably mounted on the discharge plate (31), one end of the equal adjustment sleeve (61) is in contact with the sealing plate (35), and the other end is penetrated with the through hole (313) and is threadedly sleeved on the equal adjustment rod (62), the equal adjustment gear (63) is coaxially sleeved on the equal adjustment rod (62), the equal adjustment rack (64) is slidably mounted on the discharge plate (31), and the scraper (32) is fixedly connected to the equal adjustment rack (64).

7. The sodium ion battery coating device according to claim 3, characterized in that: A recovery component is provided between the changing plate (41) and the winding roller (12), the recovery component comprising: a recovery part (7), a one-way part (8) and an extrusion part (9), the recovery part (7) comprising: a fixing rod (71), a recovery box (72), a recovery pipe (73) and a guide plate (74), the top of the recovery box (72) is provided with a recovery port (721), the guide plate (74) is tiltedly fixed on the recovery box (72), the fixing rod ( One end of the reel (71) is fixed to the recovery box (72), and the other end is fixed to the change plate (41); a recovery hole (722) is provided through the recovery box (72); one end of the recovery pipe (73) is connected to the recovery hole (722), and the other end is connected to the storage box (22); the one-way portion (8) is arranged in the recovery hole (722); and the extrusion portion (9) is arranged between the winding roller (12) and the recovery box (72).

8. The sodium ion battery coating device according to claim 7, characterized in that: The one-way portion (8) comprises: a fixed block (81), a blocking block (82), a mesh plate (83) and a connecting spring (84); the fixed block (81) is fixed in the recovery hole (722), and a one-way hole (811) is formed through the fixed block (81); the blocking block (82) is arranged in the one-way hole (811); the mesh plate (83) is fixed in the one-way hole (811); and the connecting spring (84) is fixed between the blocking block (82) and the mesh plate (83).

9. The sodium ion battery coating device according to claim 7, characterized in that: The extrusion part (9) comprises: a transmission belt (91), a rotating rod (92), a rotating plate (93), a connecting rod (94), a guide rail (95), a slider (96), an extrusion plate (97) and a blocking column (98); the rotating plate (93) is rotatably mounted on the base (1) through the rotating rod (92); the transmission belt (91) is arranged between the rotating rod (92) and the winding roller (12); the guide rail (95) is fixed on the base (1); the extrusion plate (97) is arranged Placed in the recycling box (72), the bottom wall of the recycling box (72) is penetrated by a through groove, one end of the slider (96) is slidably installed on the guide rail (95), and the other end passes through the through groove and is slidably connected with the extrusion plate (97) (33), one end of the connecting rod (94) is rotatably installed on the rotating plate (93), and the other end is rotatably installed on the slider (96), the blocking column (98) is fixed on the extrusion plate (97), and the blocking column (98) is provided with an inclined surface.

10. A coating method for a sodium ion battery coating device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Start the pump (24) to deliver slurry to the upper material box (24) through the delivery pipe (25); S2: starting the downward pressure cylinder (34) to press down the slurry in the upper material box (24) so ​​that the slurry falls onto the substrate; S3: During the process of winding the substrate, the scraper (32) scrapes the slurry on the substrate to level it, thus completing the coating operation.

Images