A multi-channel coating apparatus

Abstract

This invention relates to the field of battery manufacturing equipment technology, and more particularly to a multi-channel coating device. The feeding mechanism includes a feeding base, a feeding drive, a feeding rack, and multiple suction heads mounted on the feeding rack. The feeding base has a storage slot for mounting a slurry tank or a cleaning tank. The feeding drive is connected to the feeding rack and drives the suction heads to extend into the slurry tank or cleaning tank via the feeding rack. The coating mechanism includes a coating support, a coating lifting drive, a liquid receiving drive, a liquid receiving box, and a coating die. The coating lifting drive is connected to the coating die, and the liquid receiving drive is connected to the liquid receiving box. The coating die has multiple spaced-apart coating channels, and the suction heads are connected to these channels one-to-one via a feeding mechanism. In this invention, the multi-channel coating device can coat multiple coating segments on a baseband at once, avoiding cross-contamination between two different battery slurries.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing equipment technology, and in particular to a multi-channel coating device. Background Technology

[0002] Perovskite solar cells are a novel type of solar cell characterized by high efficiency and low cost, with efficiencies far exceeding those of traditional solar cells. In particular, perovskite solar cells can be stacked to form crystalline silicon perovskite tandem cells, which further enhance photoelectric conversion efficiency. Therefore, crystalline silicon perovskite tandem cells have found widespread applications in photovoltaic power generation, optoelectronic devices, and optoelectronic sensors.

[0003] In the manufacturing process of perovskite solar cells, a cell paste needs to be coated onto a substrate to form a perovskite thin film. The quality of the perovskite thin film directly determines the performance of the perovskite solar cell. During the experimental stage of perovskite thin films, it is necessary to test multiple perovskite films, thus requiring coating equipment to manufacture perovskite films with different cell pastes. In existing technologies, coating equipment can only coat one cell paste onto the substrate at a time. To coat different perovskite films, the equipment needs to be stopped to switch between different cell pastes, resulting in low efficiency and inability to meet the needs of experiments involving more than one type of perovskite thin film. Summary of the Invention

[0004] This invention provides a multi-channel coating device to solve the technical problems of existing coating devices, such as low efficiency and inability to meet the needs of experiments involving more perovskite thin films.

[0005] An embodiment of the present invention provides a multi-channel coating device, including a slurry tank, a cleaning tank, a feeding mechanism, a material supply mechanism, and a coating mechanism;

[0006] The feeding mechanism includes a feeding base, a feeding drive, a feeding frame, and multiple suction heads mounted on the feeding frame. The feeding base is provided with a storage slot for mounting the slurry tank or the cleaning tank. The feeding drive is mounted on the feeding base and connected to the feeding frame. The feeding drive is used to drive the suction heads to extend into the slurry tank or the cleaning tank through the feeding frame.

[0007] The coating mechanism includes a coating support, a coating lifting drive, a liquid receiving drive, a liquid receiving box, and a coating die; the coating lifting drive is mounted on the coating support and connected to the coating die, and the liquid receiving drive is mounted on the coating support and connected to the liquid receiving box; the coating die has multiple coating channels spaced apart, and the liquid suction head is connected to each coating channel through the feeding mechanism.

[0008] When the coating lifting drive moves the coating die to the coating position, the feeding mechanism delivers the battery slurry in the slurry tank to the coating channel, and the coating die coats multiple spaced coating segments on the baseband through the coating channel.

[0009] When the coating lifting drive moves the coating die to the cleaning position, and the liquid receiving drive moves the liquid receiving box below the coating die, the feeding mechanism delivers the cleaning liquid from the cleaning tank to the coating channel, and the liquid receiving box receives the cleaning liquid falling from the coating channel.

[0010] Optionally, the coating mechanism further includes a wiping drive and a wiping rod, wherein the wiping drive is mounted on the coating holder and connected to the wiping rod;

[0011] The wiping drive is used to drive the wiping rod to wipe the outlet of the coating channel.

[0012] Optionally, the feeding mechanism includes a feeding base, multiple reversing valves, and multiple pump assemblies, all of which are mounted on the feeding base;

[0013] The reversing valve has a first valve port, a second valve port, and a third valve port. The first valve port is connected to the suction head, the second valve port is connected to the interface of the pump assembly, and the third valve port is connected to the coating channel. The reversing valve is used to switch the second valve port to be connected to the first valve port or the third valve port.

[0014] Optionally, the pump assembly includes a first motor, a first lead screw, a first nut block, a first locking claw, a first cylinder, and a first piston;

[0015] The first motor is mounted on the feed seat and connected to the first lead screw. The first nut block is threadedly connected to the first lead screw. The first locking claw is mounted on the feed seat and used to clamp the first cylinder. The first piston is mounted on the first nut block and slidably inserted into the inner hole of the first cylinder. The interface of the first cylinder is connected to the second valve port.

[0016] Optionally, the feeding mechanism further includes a first barcode scanner and a waste liquid tank, the waste liquid tank being detachably installed on the feeding base and connected to the liquid receiving box;

[0017] The first barcode scanner is installed on the feeding base and is used to scan the slurry QR code on the slurry tank.

[0018] Optionally, the waste liquid tank includes a tank body and a tank cover. The tank body is provided with a liquid storage space and a first switch valve communicating with the liquid storage space. The tank cover is provided with a second switch valve communicating with the liquid receiving box.

[0019] The feeding mechanism also includes a lid-opening drive and a locking assembly, both mounted on the feeding base. The locking assembly is used to lock or unlock the tank. The lid-opening drive is mounted on the feeding base and connected to the tank lid. The lid-opening drive is used to drive the tank lid to open or close the liquid storage space.

[0020] Optionally, the coating mechanism further includes a coating rotary drive, a first coating roller, and a second coating roller. The first coating roller is installed at the output end of the coating rotary drive, the second coating roller is spaced apart from the first coating roller, and a roller gap is provided between the first coating roller and the second coating roller for the baseband to pass through.

[0021] The coating channel is used to add battery slurry onto the first coating roller;

[0022] The coating rotation drive is used to drive the first coating roller to rotate, so that the first coating roller coats the battery slurry onto the baseband.

[0023] Optionally, the multi-channel coating equipment further includes an unwinding mechanism, a winding mechanism, and a drying mechanism with a drying channel;

[0024] The base tape released by the unwinding mechanism passes sequentially through the roller gap and the drying channel before being wound onto the winding mechanism.

[0025] Optionally, the channel coating equipment further includes a labeling mechanism; the labeling mechanism is disposed between the coating mechanism and the coating mechanism, the labeling mechanism is used to attach a coating label to the baseband, and the coating label is used to mark the battery slurry in the slurry tank.

[0026] In this invention, a slurry tank is installed in the storage slot of the feeding seat. The coating lifting drive moves the coating die to the coating position. The liquid receiving drive moves the liquid receiving box away from below the coating die. The feeding drive drives the liquid suction head to insert into the slurry tank. The feeding mechanism transports the battery slurry in the slurry tank to the coating channel of the coating die. The coating channel can coat multiple coating segments spaced apart along the width direction on the baseband.

[0027] A cleaning tank is installed in the storage slot of the loading seat. The coating lifting drive moves the coating head to the cleaning position. The liquid receiving drive moves the liquid receiving box below the coating head. The loading drive drives the suction head to insert into the cleaning tank. The feeding mechanism delivers the cleaning liquid in the cleaning tank to the coating channel of the coating head. The liquid receiving box can receive the cleaning liquid falling from the coating channel. The cleaning liquid can clean the suction head, the feeding mechanism, and the coating channel.

[0028] In this invention, the multi-channel coating equipment can coat multiple coating segments spaced apart along the width direction on the baseband in a single operation, improving the coating efficiency and meeting the experimental requirements for various coating segments. Furthermore, after each coating operation, the equipment can clean the suction head, liquid supply mechanism, and coating die, avoiding cross-contamination between two different battery slurries and improving the coating quality. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a multi-channel coating device provided in an embodiment of the present invention;

[0031] Figure 2 This is a partial structural schematic diagram of a multi-channel coating device provided in an embodiment of the present invention;

[0032] Figure 3 This is a partial structural schematic diagram of a feeding mechanism provided in an embodiment of the present invention;

[0033] Figure 4 This is a partial structural schematic diagram of a feeding mechanism provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the feeding mechanism provided in an embodiment of the present invention;

[0035] Figure 6 This is a partial structural schematic diagram of a feeding mechanism provided in an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the coating mechanism provided in an embodiment of the present invention;

[0037] Figure 8This is a partial structural schematic diagram of a coating mechanism provided in an embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the wiping drive and wiping rod structure of a coating mechanism provided in an embodiment of the present invention;

[0039] Figure 10 This is a partial schematic diagram of the coated baseband provided in one embodiment of the present invention.

[0040] The reference numerals in the accompanying drawings are as follows:

[0041] 1. Slurry tank; 2. Washing tank; 3. Feeding mechanism; 31. Feeding seat; 311. Storage tank; 32. Feeding drive; 33. Feeding rack; 34. Suction head; 35. First barcode scanner; 36. Waste liquid tank; 361. Tank body; 362. Tank cover; 363. First switching valve; 364. Second switching valve; 365. Cover opening drive; 366. Locking assembly;

[0042] 4. Feeding mechanism; 41. Feeding seat; 42. Reversing valve; 43. Pump assembly; 431. First motor; 432. First lead screw; 433. First nut block; 434. First locking claw; 435. First cylinder; 436. First piston;

[0043] 5. Coating mechanism; 51. Coating support; 52. Coating lifting drive; 53. Liquid receiving drive; 54. Liquid receiving box; 55. Coating head; 56. Wiping drive; 57. Wiping rod; 58. Coating rotation drive; 59. First coating roller; 501. Second coating roller; 6. Unwinding mechanism; 7. Rewinding mechanism; 8. Drying mechanism; 20. Base tape; 201. Coating section; 202. Coating label. Detailed Implementation

[0044] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0045] like Figure 2 As shown, a multi-channel coating device provided in an embodiment of the present invention includes a slurry tank 1, a washing tank 2, a feeding mechanism 3, a material supply mechanism 4, and a coating mechanism 5.

[0046] like Figure 3As shown, the feeding mechanism 3 includes a feeding base 31, a feeding drive 32, a feeding rack 33, and a plurality of suction heads 34 all mounted on the feeding rack 33. The feeding base 31 is provided with a storage slot 311 for mounting the slurry tank 1 or the cleaning tank 2. The feeding drive 32 is mounted on the feeding base 31 and connected to the feeding rack 33. The feeding drive 32 is used to drive the suction heads 34 to extend into the slurry tank 1 or the cleaning tank 2 through the feeding rack 33.

[0047] like Figure 6 and Figure 7 As shown, the coating mechanism 5 includes a coating support 51, a coating lifting drive 52, a liquid receiving drive 53, a liquid receiving box 54, and a coating die 55. The coating lifting drive 52 is mounted on the coating support 51 and connected to the coating die 55. The liquid receiving drive 53 is mounted on the coating support 51 and connected to the liquid receiving box 54. The coating die 55 is provided with a plurality of coating channels (not shown in the figure) spaced apart. The liquid suction head 34 is connected to the coating channels one by one through the feeding mechanism 4.

[0048] When the coating lifting drive 52 moves the coating dies 55 to the coating position, the feeding mechanism 4 transports the battery slurry in the slurry tank 1 to the coating channel, and the coating dies 55 coats multiple spaced coating segments 201 on the baseband 20 through the coating channel.

[0049] When the coating lifting drive 52 moves the coating head 55 to the cleaning position, and the liquid receiving drive 53 drives the liquid receiving box 54 to move below the coating head 55, the feeding mechanism 4 delivers the cleaning liquid in the cleaning tank 2 to the coating channel, and the liquid receiving box 54 receives the cleaning liquid falling from the coating channel.

[0050] The feeding drive unit 32 includes, but is not limited to, pneumatic cylinders, hydraulic cylinders, and lead screw and nut assemblies. The number of storage tanks 311 and suction heads 34 can be set according to actual needs. For example, the number of suction heads 34 can be 6, 8, or 10. The suction heads 34 are located above the storage tanks 311. The feeding drive unit 32 drives the suction heads 34 to rise and fall, so that the suction heads 34 can enter and exit the slurry tank 1 or the cleaning tank 2.

[0051] Both the coating lifting drive 52 and the liquid receiving drive 53 include, but are not limited to, pneumatic cylinders, hydraulic cylinders, and lead screw and nut assemblies. The coating lifting drive 52 is used to drive the coating die 55 to rise and fall, and the liquid receiving drive 53 is used to move the liquid receiving box 54 to below or away from the coating die 55. The coating section 201 includes, but is not limited to, perovskite films.

[0052] Specifically, a slurry tank 1 is installed in the storage slot 311 of the feeding seat 31. The coating lifting drive 52 drives the coating die 55 to the coating position. The liquid receiving drive 53 drives the liquid receiving box 54 away from the bottom of the coating die 55. The feeding drive 32 drives the liquid suction head 34 to insert into the slurry tank 1. The feeding mechanism 4 transports the battery slurry in the slurry tank 1 to the coating channel of the coating die 55. The coating channel can coat multiple coating segments 201 that are spaced apart along the width direction on the baseband 20.

[0053] A cleaning tank 2 is installed in the storage slot 311 of the loading seat 31. The coating lifting drive 52 drives the coating head 55 to move to the cleaning position. The liquid receiving drive 53 drives the liquid receiving box 54 to move below the coating head 55. The loading drive 32 drives the suction head 34 to insert into the cleaning tank 2. The feeding mechanism 4 delivers the cleaning liquid in the cleaning tank 2 to the coating channel of the coating head 55. The liquid receiving box 54 can receive the cleaning liquid falling from the coating channel. The cleaning liquid can clean the suction head 34, the feeding mechanism 4 and the coating channel.

[0054] In this invention, the multi-channel coating device can coat multiple coating segments 201 spaced apart along the width direction on the baseband 20 in one go, improving the coating efficiency of the multi-channel coating device and meeting the needs of the experimental stage for multiple coating segments 201. In addition, the multi-channel coating device can clean the liquid suction head 34, the liquid supply mechanism, and the coating die 55 after each coating, avoiding cross-contamination between two different battery slurries and improving the coating quality of the multi-channel coating device.

[0055] In one embodiment, such as Figure 8 and Figure 9 As shown, the coating mechanism also includes a wiping drive 56 and a wiping rod 57. The wiping drive 56 is mounted on the coating bracket 51 and connected to the wiping rod 57.

[0056] The wiping drive 56 is used to drive the wiping rod 57 to wipe the outlet of the coating channel.

[0057] The wiping drive component 56 includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, and a lead screw and nut assembly; the inlet of the coating channel is connected to the feeding mechanism 4; and the wiping rod 57 includes, but is not limited to, a dust-adhesive rod.

[0058] Specifically, after cleaning the coating channels with the cleaning solution, the wiping drive 56 drives the wiping rod 57 to move, and the wiping rod 57 wipes the outlets of all coating channels.

[0059] In this embodiment, the wiping rod 57 can wipe the outlet of all coating channels, avoiding cross-contamination of battery paste remaining at the outlet of the coating channels.

[0060] In one embodiment, such as Figure 5 As shown, the feeding mechanism 4 includes a feeding seat 41, a plurality of reversing valves 42 and a plurality of pump assemblies 43, all of the pump assemblies 43 and all of the reversing valves 42 are mounted on the feeding seat 41;

[0061] The reversing valve 42 is provided with a first valve port, a second valve port and a third valve port. The first valve port is connected to the suction head 34, the second valve port is connected to the interface of the pump assembly 43, and the third valve port is connected to the coating channel. The reversing valve 42 is used to switch the second valve port to be connected to the first valve port or the third valve port.

[0062] The reversing valve 42 can control the second valve port to connect to the first valve port, and can control the second valve port to connect to the third valve port.

[0063] Specifically, when the reversing valve 42 controls the second valve port to connect to the first valve port and the second valve port is not connected to the third valve port, the pump assembly 43 can draw battery slurry from the slurry tank 1 or cleaning fluid from the cleaning tank 2 through the second valve port, the first valve port and the suction head 34; when the reversing valve 42 controls the second valve port to connect to the third valve port and the second valve port is not connected to the first valve port, the pump assembly 43 can deliver the battery slurry or cleaning fluid therein to the coating channel through the second valve port and the third valve port.

[0064] In this embodiment, the feeding mechanism 4 has a compact structure and a high degree of automation.

[0065] In one embodiment, such as Figure 6 As shown, the pump assembly 43 includes a first motor 431, a first lead screw 432, a first nut block 433, a first locking claw 434, a first cylinder 435, and a first piston 436;

[0066] The first motor 431 is mounted on the feed seat 41 and connected to the first lead screw 432. The first nut block 433 is threadedly connected to the first lead screw 432. The first locking claw 434 is mounted on the feed seat 41 and is used to clamp the first cylinder 435. The first piston 436 is mounted on the first nut block 433 and is slidably inserted into the inner hole of the first cylinder 435. The interface of the first cylinder 435 is connected to the second valve port.

[0067] The first cylinder 435 and the first piston 436 constitute a syringe.

[0068] Specifically, the first motor 431 drives the first lead screw 432 to rotate, and the first lead screw 432 drives the first piston 436 to move inside the first cylinder 435 through the first nut block 433, so that the first cylinder 435 can extract battery slurry or cleaning fluid, and can transport the battery slurry or cleaning fluid therein to the coating channel.

[0069] In this embodiment, the pump assembly 43 has a simple structure, low cost, and high degree of automation.

[0070] In one embodiment, such as Figure 3 As shown, the feeding mechanism 3 also includes a first barcode scanner 35 and a waste liquid tank 36. The waste liquid tank 36 is detachably installed on the feeding base 31 and is connected to the liquid receiving box 54.

[0071] The first barcode scanner 35 is installed on the feeding seat 31 and is used to scan the slurry QR code on the slurry tank 1.

[0072] The waste liquid tank 36 can be connected to the receiving box 54 through a conduit. The waste liquid in the receiving box 54 automatically flows into the waste liquid tank 36 due to gravity, which facilitates the collection of waste liquid. In addition, before each slurry tank 1 is placed in the storage tank 311, the barcode scanner needs to scan the slurry QR code on each slurry tank 1. The slurry QR code records the type of battery slurry stored in the corresponding slurry tank 1, which facilitates the traceability of the battery slurry in the future.

[0073] In one embodiment, such as Figure 4 As shown, the waste liquid tank 36 includes a tank body 361 and a tank cover 362. The tank body 361 is provided with a liquid storage space and a first switch valve 363 connected to the liquid storage space. The tank cover 362 is provided with a second switch valve 364, which is connected to the liquid receiving box 54.

[0074] The feeding mechanism 3 also includes a lid opening drive 365 and a locking assembly 366, both mounted on the feeding base 31. The locking assembly 366 is used to lock or unlock the tank 361. The lid opening drive 365 is mounted on the feeding base 31 and connected to the tank lid 362. The lid opening drive 365 is used to drive the tank lid 362 to open or close the liquid storage space.

[0075] The opening drive component 365 includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, and a linear motor. The opening drive component 365 can drive the can lid 362 to move up and down, so that the can lid 362 can open or close the liquid storage space. The first switch valve 363 can control the connection between the liquid storage space and the liquid receiving box 54, and the second switch valve 364 can control the connection between the outlet of the liquid storage space and the liquid receiving box 54.

[0076] In this embodiment, the waste liquid tank 36 can be automatically opened or closed, which facilitates the cleaning of the waste liquid tank 36.

[0077] In one embodiment, such as Figure 6 As shown, the coating mechanism 5 also includes a coating rotation drive 58, a first coating roller 59 and a second coating roller 501. The first coating roller 59 is installed at the output end of the coating rotation drive 58. The second coating roller 501 is spaced apart from the first coating roller 59, and a roller gap is provided between the first coating roller 59 and the second coating roller 501 for the base belt 20 to pass through.

[0078] The coating channel is used to add battery slurry onto the first coating roller 59;

[0079] The coating rotation drive 58 is used to drive the first coating roller 59 to rotate, so that the first coating roller 59 coats the battery slurry onto the baseband 20.

[0080] The coating head 55 is located above the first coating roller 59, and the coating rotation drive 58 includes, but is not limited to, a motor.

[0081] Specifically, the coating lifting drive 52 drives the coating stencil 55 to move down to the coating position. The coating stencil 55 can add battery slurry to the first coating roller 59. The coating rotation drive 58 drives the first coating roller 59 to rotate. The first coating roller 59 coats the battery slurry onto the baseband 20, thereby coating multiple spaced coating segments 201 on the baseband 20.

[0082] In one embodiment, such as Figure 1 As shown, the multi-channel coating equipment also includes an unwinding mechanism 6, a winding mechanism 7, and a drying mechanism 8 with a drying channel;

[0083] The base tape 20 released by the unwinding mechanism passes sequentially through the roller gap and the drying channel and then winds onto the winding mechanism 7.

[0084] The drying mechanism 8 can dry the coated baseband 20 by means of infrared heating, hot air, or electric heating.

[0085] In this embodiment, the drying mechanism 8 can dry the coated baseband 20, so that the battery slurry is firmly bonded to the baseband 20; the unwinding mechanism 6 can release the uncoated baseband 20, and the winding mechanism 7 can wind up the coated baseband 20, thereby improving the automation level of the multi-channel coating equipment.

[0086] In one embodiment, the channel coating equipment further includes a labeling mechanism (not shown in the figure); the labeling mechanism is disposed between the coating mechanism 5 and the coating mechanism, the labeling mechanism is used to attach a coating label 202 to the base tape 20, and the coating label 202 is used to mark the battery slurry in the slurry tank 1.

[0087] Specifically, each time all the slurry tanks 1 of the feeding seat 31 are replaced, the labeling structure will affix a coating label 202 to the baseband 20. The coating label 202 can mark the type of all battery slurry in the subsequent coating section 201 (the coating label 202 can record information from multiple slurry labels), thereby facilitating the subsequent traceability of the battery slurry corresponding to the coating section 201.

[0088] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A multi-channel coating device, characterized in that, It includes a slurry tank, a washing tank, a feeding mechanism, a material supply mechanism, and a coating mechanism; The feeding mechanism includes a feeding base, a feeding drive, a feeding frame, and multiple suction heads mounted on the feeding frame. The feeding base is provided with a storage slot for mounting the slurry tank or the cleaning tank. The feeding drive is mounted on the feeding base and connected to the feeding frame. The feeding drive is used to drive the suction heads to extend into the slurry tank or the cleaning tank through the feeding frame. The coating mechanism includes a coating support, a coating lifting drive, a liquid receiving drive, a liquid receiving box, and a coating die head; the coating lifting drive is mounted on the coating support and connected to the coating die head, and the liquid receiving drive is mounted on the coating support and connected to the liquid receiving box; the coating die head has multiple coating channels spaced apart, and the liquid suction head is connected to each coating channel through the feeding mechanism; When the coating lifting drive moves the coating die head to the coating position, the feeding mechanism delivers the battery slurry in the slurry tank to the coating channel, and the coating die head coats multiple spaced coating segments on the baseband through the coating channel. When the coating lifting drive moves the coating die head to the cleaning position, and the liquid receiving drive moves the liquid receiving box to below the coating die head, the feeding mechanism delivers the cleaning liquid in the cleaning tank to the coating channel, and the liquid receiving box receives the cleaning liquid falling from the coating channel. The feeding mechanism includes a feeding base, multiple reversing valves, and multiple pump assemblies, all of which are mounted on the feeding base; The reversing valve is provided with a first valve port, a second valve port and a third valve port. The first valve port is connected to the suction head, the second valve port is connected to the interface of the pump assembly, and the third valve port is connected to the coating channel. The reversing valve is used to switch the second valve port to be connected to the first valve port or the third valve port; The pump assembly includes a first motor, a first lead screw, a first nut block, a first locking claw, a first cylinder, and a first piston; The first motor is mounted on the feed seat and connected to the first lead screw. The first nut block is threadedly connected to the first lead screw. The first locking claw is mounted on the feed seat and used to clamp the first cylinder. The first piston is mounted on the first nut block and slidably inserted into the inner hole of the first cylinder. The interface of the first cylinder is connected to the second valve port.

2. The multi-channel coating equipment according to claim 1, characterized in that, The coating mechanism further includes a wiping drive and a wiping rod, wherein the wiping drive is mounted on the coating bracket and connected to the wiping rod; The wiping drive is used to drive the wiping rod to wipe the outlet of the coating channel.

3. The multi-channel coating equipment according to claim 1, characterized in that, The feeding mechanism also includes a first barcode scanner and a waste liquid tank. The waste liquid tank is detachably installed on the feeding base and is connected to the liquid receiving box. The first barcode scanner is installed on the feeding base and is used to scan the slurry QR code on the slurry tank.

4. The multi-channel coating equipment according to claim 3, characterized in that, The waste liquid tank includes a tank body and a tank cover. The tank body is provided with a liquid storage space and a first switch valve connected to the liquid storage space. The tank cover is provided with a second switch valve, which is connected to the liquid receiving box. The feeding mechanism also includes a lid-opening drive and a locking assembly, both mounted on the feeding base. The locking assembly is used to lock or unlock the tank. The lid-opening drive is mounted on the feeding base and connected to the tank lid. The lid-opening drive is used to drive the tank lid to open or close the liquid storage space.

5. The multi-channel coating equipment according to claim 1, characterized in that, The coating mechanism further includes a coating rotary drive, a first coating roller, and a second coating roller. The first coating roller is installed at the output end of the coating rotary drive. The second coating roller is spaced apart from the first coating roller, and a roller gap is provided between the first coating roller and the second coating roller for the baseband to pass through. The coating channel is used to add battery slurry onto the first coating roller; The coating rotation drive is used to drive the first coating roller to rotate, so that the first coating roller coats the battery slurry onto the baseband.

6. The multi-channel coating equipment according to claim 5, characterized in that, The multi-channel coating equipment also includes an unwinding mechanism, a winding mechanism, and a drying mechanism with a drying channel; The base tape released by the unwinding mechanism passes sequentially through the roller gap and the drying channel before being wound onto the winding mechanism.

7. The multi-channel coating equipment according to claim 6, characterized in that, The multi-channel coating equipment also includes a labeling mechanism; the labeling mechanism is disposed between the coating mechanism and the coating unit, and the labeling mechanism is used to attach coating labels to the baseband, and the coating labels are used to mark the battery slurry in the slurry tank.

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