Device and method for coating densified coating on surface of bipolar plate of flow battery

Abstract

The invention belongs to the technical field of battery pole plate processing, and discloses flow battery bipolar plate surface densification coating coating equipment and coating method.The flow battery bipolar plate surface densification coating coating equipment comprises an upper mounting plate and a lower mounting plate which are symmetrically arranged, and extension guide rails are mounted in the middles of the left side and the right side of each mounting plate; limiting guide assemblies are movably connected into the two extending guide rails in a clamped mode, and the limiting guide assemblies move left and right relative to the extending guide rails. Through cooperation between the self-clamping assembly and the limiting and guiding assembly and cooperation between the material conveying diffusion cavity and the gas conveying diffusion cavity, when the device conducts coating machining, preheating and coating can be conducted firstly, auxiliary curing is conducted finally, and in the whole process, only front-back displacement of the self-clamping assembly needs to be controlled, so that the self-clamping coating device is convenient to use. And moreover, special operation is not needed for feeding and discharging of the battery pole plates, the structure is compact, multiple devices do not need to be operated, the overall machining efficiency is remarkably improved, and continuous machining is completed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery plate processing, and particularly relates to a liquid flow battery bipolar plate surface densification coating device and a coating method. BACKGROUND

[0002] The liquid flow battery bipolar plate surface densification coating is a key surface treatment technology, aiming to improve the corrosion resistance and sealing performance of the bipolar plate. As a core component of the liquid flow battery, the bipolar plate is easily corroded and leaked in the strong acid and alkali electrolyte environment for a long time, affecting the service life and efficiency of the battery. By coating a layer of densification coating (such as ceramic coating, carbon-based coating or metal oxide coating) on the surface of the bipolar plate, a dense and uniform protective layer can be formed to effectively isolate the direct contact between the electrolyte and the substrate, preventing corrosion and penetration.

[0003] The coating of the surface of the battery plate is generally completed by using a special coating device. The conventional coating device mainly realizes the coating operation through the cooperation of the spray head and the clamp. In use, the clamp is first used to fix the plate, and the coating device is positioned and adjusted, and then the coating process can be realized. Only one side of the plate can be coated during the entire coating process, and the coating efficiency is low.

[0004] In addition, preheating and curing treatment are required during the coating process. The conventional coating device generally sets a preheating device before coating and a curing device after coating. The overall land occupation of such device is large, and the overall operation is relatively complicated, and rapid coating cannot be realized. SUMMARY

[0005] The purpose of the present application is to provide a liquid flow battery bipolar plate surface densification coating device and a coating method to solve the problems raised in the background.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: a liquid flow battery bipolar plate surface densification coating device, comprising two symmetrically arranged mounting plates, an extension guide rail is installed on the middle part of the left and right sides of each mounting plate, a limiting guide assembly is movably connected inside each extension guide rail, the limiting guide assembly moves left and right relative to the extension guide rail, a through slot is formed on the top end of each mounting plate near the front and rear sides, a self-clamping assembly is arranged in the middle part of each mounting plate, a linkage assembly is installed on the top end of the upper mounting plate, the left and right ends of the linkage assembly are connected with the outer sides of the two limiting guide assemblies, a gas diffusion cavity is installed inside each through slot in front, the two gas diffusion cavities are symmetrically arranged above and below, a material diffusion cavity is installed inside each through slot in the rear, and the two material diffusion cavities are symmetrically arranged above and below. When the self-clamping assembly is clamped with the limiting guide assembly, the device is in a coating state, at this time the battery plate is limited and fixed by the self-clamping assembly, the linkage assembly is used for adjusting the spacing between the two limiting guide assemblies, when the linkage assembly is in the initial state, the spacing between the two limiting guide assemblies is the minimum value, and the material conveying diffusion cavity and the gas conveying diffusion cavity are respectively used for coating spraying and hot air heating.

[0007] Before the coating of the battery plate is carried out, the self-clamping assembly and the limiting guide assembly need to be kept in a separated state, and the linkage assembly needs to be kept in the initial state, at this time the spacing between the two limiting guide assemblies is in the minimum value, and the battery plate is placed on the self-clamping assembly, and the preparation work before coating is completed.

[0008] As a further technical solution of the present application, the end of the material conveying diffusion cavity away from the mounting plate is fixedly connected with a material conveying pipe, and the two material conveying pipes are fixedly connected with a No. 2 three-way valve, and the input end of the No. 2 three-way valve is connected with an external coating spraying device.

[0009] As a further technical solution of the present application, the end of the gas conveying diffusion cavity away from the mounting plate is fixedly connected with a gas conveying pipe, and the two gas conveying pipes are fixedly connected with a No. 1 three-way valve, and the input end of the No. 1 three-way valve is connected with an external high-pressure hot air machine.

[0010] When the self-clamping assembly clamped with the battery plate is clamped with the limiting guide assembly, the self-clamping assembly can be pushed to displace to the rear end, at this time the No. 1 three-way valve can be opened first, high-pressure hot air can be discharged, and the high-pressure hot air can enter the inside of the gas conveying diffusion cavity, and the battery plate can be preheated by the gas conveying diffusion cavity, and the self-clamping assembly continues to displace to the rear end, when the battery plate displaces to the position directly below the material conveying diffusion cavity, the No. 2 three-way valve can be opened at this time, and the coating can be uniformly sprayed to the surface of the battery plate through the material conveying pipe and the material conveying diffusion cavity, and the uniform coating of the surface of the battery plate can be completed as the self-clamping assembly continues to displace rearward, after the entire coating is completed, the No. 2 three-way valve is closed to stop the spraying of the coating; and the self-clamping assembly is pulled forward, so that the self-clamping assembly displaces in the opposite direction, i.e. towards the front end of the device, at this time the gas conveying diffusion cavity continues to output hot air, and as the battery plate displaces forward, the hot air contacts the coated battery plate and assists in completing the solidification process, and the entire coating process is completed, and the continuous coating of the battery plate is completed by repeating the above process.

[0011] By utilizing the cooperation between the self-clamping assembly and the limiting guide assembly, and the cooperation between the material conveying diffusion cavity and the gas conveying diffusion cavity, the device can first be preheated, coated, and then assisted in curing during the coating process, and the entire process only needs to control the forward and backward displacement of the self-clamping assembly, and the feeding and discharging actions corresponding to the battery plate, without special operation, and the structure is compact, without the need to operate multiple devices, significantly improving the overall processing efficiency and completing continuous processing.

[0012] When the self-clamping assembly loaded with the battery plate and the limiting guide assembly are clamped and displace forward and backward, hot air is output to the upper and lower gas conveying diffusion cavities through the gas conveying pipe, and the battery plate is preheated upward and downward at the same time, and the coating can be output to the upper and lower material conveying diffusion cavities through the material conveying pipe, and the battery plate is bidirectionally sprayed through the material conveying diffusion cavity, and bidirectional assisted curing can be performed after spraying.

[0013] By utilizing the cooperation between the self-clamping assembly and the limiting guide assembly again, and simultaneously utilizing the linkage between the material conveying diffusion cavity and the gas conveying diffusion cavity, the battery plate can be bidirectionally and simultaneously sprayed, avoiding the traditional partial processing method, significantly shortening the overall processing time, and improving the overall processing efficiency.

[0014] As a further technical solution of the application, the self-clamping assembly comprises a material supporting plate, a bidirectional electric telescopic rod is fixedly installed at the middle part of the material supporting plate, and the left and right ends of the bidirectional electric telescopic rod penetrate one end of the material supporting plate and are fixedly connected with clamping plates.

[0015] As a further technical solution of the application, limiting blocks are fixedly installed at the upper and lower ends of the side away from the bidirectional electric telescopic rod of the clamping plate, and the limiting blocks are movably clamped with the limiting guide assembly.

[0016] When the battery plate is fixed and limited, the battery plate can be placed above the material supporting plate, and the bidirectional electric telescopic rod is turned on to shorten it, at this time, the left and right clamping plates are relatively close, until the inner side surface thereof contacts the battery plate, and the limiting process of the battery plate is completed through the two clamping plates.

[0017] As a further technical solution of the application, the limiting guide assembly comprises a longitudinal guide column, transverse guide blocks are fixedly installed at the upper and lower ends of the longitudinal guide column, the transverse guide blocks are movably clamped with the extension guide rail, extension rods are fixedly connected with the ends of the transverse guide blocks away from the mounting plate, and one end of the extension rod penetrates one side of the extension guide rail and is movably sleeved with the extension guide rail.

[0018] As a further technical scheme of the present application, one end of the extension rod is connected with the linkage assembly, the limit guide rails are fixedly installed on the positions close to the upper and lower ends of the longitudinal guide columns, and the limit guide rails and the limit blocks are movably connected when the self-clamping assembly and the limit guide assembly are clamped with each other.

[0019] In the initial state, the distance between the left and right longitudinal guide columns is the minimum value, and the distance between the left and right longitudinal guide columns can be adjusted through the linkage assembly, so that the left and right limit blocks are just clamped with the limit guide rails.

[0020] As a further technical scheme of the present application, the linkage assembly comprises a movable frame, the bottom end of the movable frame is fixedly installed with a passive telescopic rod, the bottom end of the passive telescopic rod is connected with the installation plate located above, the left and right sides of the bottom end of the movable frame are both installed with a first fixed seat, one end of the first fixed seat away from the movable frame is movably connected with a linkage rod through a rotating shaft, and one end of the linkage rod away from the first fixed seat is movably connected with a second fixed seat through a rotating shaft.

[0021] As a further technical scheme of the present application, the bottom end of the second fixed seat is fixedly installed with a movable plate, the movable plate is connected with the extension rod, and the movable frame is located at the lowest position when the passive telescopic rod is in the initial state.

[0022] When the limit fixing of the battery plate is completed, the passive telescopic rod can be compressed by pressing the movable frame downward, at this time, the movable frame moves downward, and drives the left and right linkage rods to deflect away from the middle part, at this time, the left and right movable plates move away from each other, and exert a pulling force on the left and right limit guide assemblies, at this time, the left and right transverse guide blocks move relative to the extension guide rail, and drive the left and right longitudinal guide columns to move away from each other, until the left and right limit guide rails can be clamped with the limit blocks, when the left and right limit guide rails are just clamped with the limit blocks, the height of the movable frame is kept, and the self-clamping assembly and the limit guide assembly are clamped with each other, so that the positioning process before coating is completed.

[0023] Through the cooperation of the limit guide assembly, the self-clamping assembly and the linkage assembly, after the limit fixing of the battery plate is completed, the positioning adjustment process can be quickly realized through a simple pressing action, and after the limit guide assembly and the self-clamping assembly are clamped with each other, the plate can be adjusted to be directly below the coating and heating station, the whole process is quickly completed, and when the battery plates are processed in batches, the adjustment time can be significantly shortened, and the overall processing efficiency is improved.

[0024] A coating method of a liquid flow battery bipolar plate surface densification coating equipment, comprising the following steps: S1: when coating the battery plate, the self-clamping assembly is taken out as a whole by pulling the extension push rod, so as to separate it from the limiting guide assembly, and the battery plate is placed on the material supporting plate, and the two-way electric telescopic rod is turned on to drive the two clamping plates to approach each other until the two ends of the battery plate are contacted and fixed; S2: after the limiting and fixing of the battery plate are completed, the movable frame is pressed downward, so that the passive telescopic rod is compressed, the two linkage rods are deflected, the two limiting guide rails are moved away from each other, and the spacing between the two limiting guide rails is matched with the spacing between the two clamping plates, the extension push rod is pushed inward, the limiting clamping block and the limiting guide rail are clamped, and positioning before coating is realized; S3: while the self-clamping assembly moves backward, the hot air output by the gas diffusion cavity is first turned on to cool the battery plate, the coating is completed by spraying paint from the material diffusion cavity as the self-clamping assembly continues to move backward, and the plate is completely coated; S4: after the coating of the plate surface is completed, the hot air output by the gas diffusion cavity is kept, and the self-clamping assembly is pulled out, so that the coated plate can be contacted with the hot air again to complete the auxiliary curing process, until the self-clamping assembly is completely separated from the limiting guide assembly, the discharging process of the plate is completed, and the above process is repeated to complete the continuous coating process.

[0025] The beneficial effects of the present application are as follows: (1) By using the cooperation between the self-clamping assembly and the limiting guide assembly, and the cooperation between the material diffusion cavity and the gas diffusion cavity, the device can first be preheated, then coated, and finally assisted to cure during the coating process, and only the forward and backward displacement of the self-clamping assembly needs to be controlled, and the feeding and discharging of the battery plate are performed without special operation, the structure is compact, multiple devices do not need to be operated, the overall processing efficiency is significantly improved, and continuous processing is completed.

[0026] (2) By using the cooperation between the self-clamping assembly and the limiting guide assembly again, and using the linkage between the material diffusion cavity and the gas diffusion cavity, the battery plate can be sprayed on both sides at the same time, avoiding the processing mode of the traditional device, significantly shortening the overall processing time, and improving the overall processing efficiency.

[0027] (3) The cooperation between the limiting and guiding assembly, the self-clamping assembly and the linkage assembly is utilized, so that after the limiting and fixing of the battery plate is completed, the positioning adjustment process can be quickly realized through simple pressing action, and when the clamping between the limiting and guiding assembly and the self-clamping assembly is completed, the plate can be adjusted to be directly below the coating and heating station, the whole process is quickly completed, and when the battery plates are processed in batches, the adjustment time can be significantly shortened and the overall processing efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a separate schematic diagram of the self-clamping assembly structure of the application; Figure 3 It is a partial schematic diagram of the self-clamping assembly structure of the application; Figure 4 It is a cooperation schematic diagram of the mounting plate and the limiting and guiding assembly structure of the application; Figure 5 It is an exploded schematic diagram of the mounting plate and the limiting and guiding assembly structure of the application; Figure 6 It is a cooperation schematic diagram of the material conveying and diffusion cavity and the gas conveying and diffusion cavity structure of the application; Figure 7 It is a separate schematic diagram of the linkage assembly structure of the application.

[0029] In the figure: 1, mounting plate; 2, through slot; 3, extension guide rail; 4, limiting and guiding assembly; 401, longitudinal guide column; 402, transverse guide block; 403, extension rod; 404, limiting guide rail; 5, self-clamping assembly; 501, material supporting plate; 502, bidirectional electric telescopic rod; 503, clamping plate; 504, limiting clamping block; 505, extension push rod; 6, linkage assembly; 601, movable frame; 602, first fixed seat; 603, second fixed seat; 604, linkage rod; 605, movable plate; 606, passive telescopic rod; 7, No. 1 three-way valve; 8, No. 2 three-way valve; 9, material conveying pipe; 10, gas conveying pipe; 11, material conveying and diffusion cavity; 12, gas conveying and diffusion cavity. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0031] As Figures 1 to 7As shown in the present application, a kind of liquid flow battery bipolar plate surface densification coating equipment in embodiment, including two symmetrically arranged mounting plate 1, the middle position of the left and right sides of two mounting plate 1 is equipped with extension guide rail 3, the inside of two extension guide rails 3 is movably connected with limit guide assembly 4, limit guide assembly 4 is displaced relative to extension guide rail 3, the position of the top of mounting plate 1 is close to front and rear sides and is equipped with through slot 2, the middle part of two mounting plate 1 is equipped with self-clamping assembly 5, the top of upper mounting plate 1 is equipped with linkage assembly 6, the left and right ends of linkage assembly 6 are connected with the outside of two limit guide assemblies 4, the inside of front through slot 2 is equipped with gas diffusion cavity 12, two gas diffusion cavities 12 are symmetrically arranged, the inside of rear through slot 2 is equipped with material diffusion cavity 11, two material diffusion cavities 11 are symmetrically arranged up and down; When self-clamping assembly 5 is connected with limit guide assembly 4, the device is in coating state, at this time, battery pole plate is fixed by limit guide assembly 5, linkage assembly 6 is used to adjust the distance between two limit guide assemblies 4, when linkage assembly 6 is in initial state, the distance between two limit guide assemblies 4 is minimum, material diffusion cavity 11 and gas diffusion cavity 12 are respectively used for coating spraying and hot air heating.

[0032] Before coating battery pole plate, self-clamping assembly 5 and limit guide assembly 4 need to be kept in separated state, and linkage assembly 6 is kept in initial state, at this time, the distance between two limit guide assemblies 4 is minimum, and battery pole plate is placed on self-clamping assembly 5, to complete the preparation work before coating.

[0033] As shown in the present application, Figure 1 And Figure 6 The end of material diffusion cavity 11 away from mounting plate 1 is fixedly connected with material pipe 9, two material pipes 9 are fixedly connected with No. two three-way valve 8, the input end of No. two three-way valve 8 is connected with external coating spraying device, the end of gas diffusion cavity 12 away from mounting plate 1 is fixedly connected with gas pipe 10, two gas pipes 10 are fixedly connected with No. one three-way valve 7, the input end of No. one three-way valve 7 is connected with external high-pressure air heater.

[0034] Before coating battery pole plate, one end of No. one three-way valve 7 needs to be kept connected with external high-pressure air heater, and one end of No. two three-way valve 8 needs to be kept connected with external coating spraying device.

[0035] When the self-clamping assembly 5 clamped with the battery plate is connected with the limiting guide assembly 4, the self-clamping assembly 5 can be pushed to move to the rear end, at this time, the first three-way valve 7 can be opened first, so that the high-pressure hot air is discharged and enters the inside of the gas conveying and diffusing cavity 12, and the battery plate is preheated through the gas conveying and diffusing cavity 12, and the self-clamping assembly 5 is kept moving to the rear end, when the battery plate is displaced to the position directly below the material conveying and diffusing cavity 11, the second three-way valve 8 can be opened at this time, and the coating is uniformly sprayed to the surface of the battery plate through the material conveying pipe 9 and the material conveying and diffusing cavity 11, and with the continuous rearward movement of the self-clamping assembly 5, the uniform coating of the surface of the battery plate is completed, and after the complete coating, the second three-way valve 8 is closed to stop the spraying of the coating. And the self-clamping assembly 5 is pulled forward, so that the self-clamping assembly 5 moves in the opposite direction, that is, to the front end of the device, at this time, the gas conveying and diffusing cavity 12 continues to output hot air, and with the forward displacement of the battery plate, the hot air contacts the coated battery plate and assists in completing the curing process, and the complete coating process is completed by repeating the above process, and the continuous coating of the battery plate is completed.

[0036] By using the cooperation between the self-clamping assembly 5 and the limiting guide assembly 4, and the cooperation between the material conveying and diffusing cavity 11 and the gas conveying and diffusing cavity 12, the device can first be preheated, then coated, and finally assisted to cure during the coating process, and the whole process only needs to control the forward and backward displacement of the self-clamping assembly 5, and the feeding and discharging actions of the battery plate, without special operation, and the structure is compact, without the need to operate multiple devices, which significantly improves the overall processing efficiency and completes the continuous processing.

[0037] And when the self-clamping assembly 5 loaded with the battery plate is connected with the limiting guide assembly 4 and moves forward and backward, the hot air is output to the upper and lower two gas conveying and diffusing cavities 12 through the gas conveying pipe 10, and the battery plate is preheated upward and downward at the same time, and the coating can be output to the upper and lower two material conveying and diffusing cavities 11 through the material conveying pipe 9, and the battery plate is bidirectionally sprayed through the material conveying and diffusing cavity 11, and bidirectional auxiliary curing can be performed after spraying.

[0038] By using the cooperation between the self-clamping assembly 5 and the limiting guide assembly 4 again, and using the linkage between the material conveying and diffusing cavity 11 and the gas conveying and diffusing cavity 12 at the same time, the battery plate can be bidirectionally and simultaneously sprayed, avoiding the processing mode of the traditional device, significantly shortening the overall processing time, and improving the overall processing efficiency.

[0039] As Figure 1 And Figure 2 And Figure 3As shown in the self-clamping assembly 5, the middle part of the material supporting plate 501 is fixedly provided with a two-way electric telescopic rod 502, the left and right ends of the two-way electric telescopic rod 502 are both penetrated through one end of the material supporting plate 501 and are fixedly connected with a clamping plate 503, the upper and lower ends of the side away from the two-way electric telescopic rod 502 of the clamping plate 503 are both fixedly provided with a limiting block 504, and the limiting block 504 is movably connected with the limiting guide assembly 4.

[0040] When the battery plate is limited and fixed, the battery plate can be placed above the material supporting plate 501, and the two-way electric telescopic rod 502 is turned on to control the shortening of the two-way electric telescopic rod 502, at this time, the left and right clamping plates 503 are relatively close, until the inner side of the clamping plate 503 is in contact with the battery plate, and the limiting process of the battery plate is completed through the two clamping plates 503.

[0041] As shown in the self-clamping assembly 5, the middle part of the material supporting plate 501 is fixedly provided with a two-way electric telescopic rod 502, the left and right ends of the two-way electric telescopic rod 502 are both penetrated through one end of the material supporting plate 501 and are fixedly connected with a clamping plate 503, the upper and lower ends of the side away from the two-way electric telescopic rod 502 of the clamping plate 503 are both fixedly provided with a limiting block 504, and the limiting block 504 is movably connected with the limiting guide assembly 4. Figure 1 Figure 4 As shown in the self-clamping assembly 5, the middle part of the material supporting plate 501 is fixedly provided with a two-way electric telescopic rod 502, the left and right ends of the two-way electric telescopic rod 502 are both penetrated through one end of the material supporting plate 501 and are fixedly connected with a clamping plate 503, the upper and lower ends of the side away from the two-way electric telescopic rod 502 of the clamping plate 503 are both fixedly provided with a limiting block 504, and the limiting block 504 is movably connected with the limiting guide assembly 4. Figure 5 In the initial state, the spacing between the left and right longitudinal guide columns 401 is the minimum value, and the spacing between the left and right longitudinal guide columns 401 can be adjusted through the linkage assembly 6, so that the left and right limiting blocks 504 are just clamped between the limiting guide rails 404.

[0042] As shown in the self-clamping assembly 5, the middle part of the material supporting plate 501 is fixedly provided with a two-way electric telescopic rod 502, the left and right ends of the two-way electric telescopic rod 502 are both penetrated through one end of the material supporting plate 501 and are fixedly connected with a clamping plate 503, the upper and lower ends of the side away from the two-way electric telescopic rod 502 of the clamping plate 503 are both fixedly provided with a limiting block 504, and the limiting block 504 is movably connected with the limiting guide assembly 4.

[0043] Figure 1 As shown in the self-clamping assembly 5, the middle part of the material supporting plate 501 is fixedly provided with a two-way electric telescopic rod 502, the left and right ends of the two-way electric telescopic rod 502 are both penetrated through one end of the material supporting plate 501 and are fixedly connected with a clamping plate 503, the upper and lower ends of the side away from the two-way electric telescopic rod 502 of the clamping plate 503 are both fixedly provided with a limiting block 504, and the limiting block 504 is movably connected with the limiting guide assembly 4. Figure 7 As shown in the self-clamping assembly 5, the middle part of the material supporting plate 501 is fixedly provided with a two-way electric telescopic rod 502, the left and right ends of the two-way electric telescopic rod 502 are both penetrated through one end of the material supporting plate 501 and are fixedly connected with a clamping plate 503, the upper and lower ends of the side away from the two-way electric telescopic rod 502 of the clamping plate 503 are both fixedly provided with a limiting block 504, and the limiting block 504 is movably connected with the limiting guide assembly 4.​​

[0044] When the limiting and fixing of the battery plate is completed, the passive telescopic rod 606 is compressed by pressing the movable frame 601 downward, at this time the movable frame 601 moves downward and drives the two linkage rods 604 to deflect away from the middle part, at this time the two movable plates 605 move away from each other and exert a pulling force on the two limiting guide assemblies 4, at this time the two transverse guide blocks 402 move relative to the extension guide rail 3 and drive the two longitudinal guide columns 401 to move away from each other, until the plurality of limiting guide rails 404 move away from each other, when the plurality of limiting guide rails 404 are just capable of being clamped with the limiting clamping blocks 504, the height of the movable frame 601 is kept, the self-clamping assembly 5 and the limiting guide assembly 4 are clamped, and the positioning process before coating is completed.

[0045] By utilizing the cooperation between the limiting guide assembly 4, the self-clamping assembly 5 and the linkage assembly 6, the device can complete the limiting and fixing of the battery plate, and the positioning adjustment process can be quickly realized by simple pressing action, and when the limiting guide assembly 4 and the self-clamping assembly 5 are clamped, the plate can be adjusted to be directly below the coating and heating station, and the whole process is quickly completed, which can significantly shorten the adjustment time and improve the overall processing efficiency when processing the battery plate in batches.

[0046] A coating method of a liquid flow battery bipolar plate surface densification coating device, comprising the following steps: S1: when coating the battery plate, the self-clamping assembly 5 is taken out as a whole by pulling the extension push rod 505, so that it is separated from the limiting guide assembly 4, and the battery plate is placed on the material supporting plate 501, and at the same time, the two-way electric telescopic rod 502 is started to drive the two clamping plates 503 to move close to each other until the two ends of the battery plate are contacted, and the fixing of the battery plate is completed; S2: after the limiting and fixing of the battery plate is completed, the movable frame 601 is pressed downward, so that the passive telescopic rod 606 is compressed, and at the same time, the two linkage rods 604 are deflected, so that the two limiting guide rails 404 move away from each other until the distance between the two limiting guide rails 404 is adapted to the distance between the two clamping plates 503, and the extension push rod 505 is pushed inward, so that the limiting clamping block 504 and the limiting guide rail 404 are clamped, and the positioning before coating is realized; S3: while the self-clamping assembly 5 moves backward as a whole, first, the hot air output by the gas diffusion cavity 12 is started to cool the battery plate, and with the continuous backward movement of the self-clamping assembly 5, the coating is completed by spraying the coating material from the material conveying diffusion cavity 11, until the plate is completely coated; S4: after the coating of the surface of the polar plate is completed, the air supply diffusion cavity 12 continues to output hot air, and the self-holding assembly 5 is extracted outward, at this time the coated polar plate can be in contact with the hot air again to complete the auxiliary curing process, until the self-holding assembly 5 is completely separated from the limiting guide assembly 4, the discharging process of the polar plate is completed, and the above process is repeated to complete the continuous coating process.

[0047] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and spirit of the application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A liquid flow battery bipolar plate surface densification coating apparatus, comprising two symmetrical installation plates (1) arranged in upper and lower positions, characterized in that: Two said installation plate (1) both sides of the middle position on the installation of extended guide rail (3), two said extended guide rail (3) inside are movably connected with limiting guide assembly (4), the limiting guide assembly (4) relative to extended guide rail (3) left and right displacement, the installation plate (1) top near the position of the front and rear are provided with through slot (2), two said installation plate (1) middle part is provided with self-clamping assembly (5), the top of the installation plate (1) is provided with linkage assembly (6), the left and right ends of the linkage assembly (6) and the outer side of the two limiting guide assembly (4) are connected, the inside of the through slot (2) in front is provided with gas diffusion cavity (12), two said gas diffusion cavity (12) are symmetrically arranged, the inside of the through slot (2) in back is provided with material diffusion cavity (11), two said material diffusion cavity (11) are symmetrically arranged; When the self-clamping assembly (5) is connected between the limiting guide assembly (4), the device is in a coating state, at this time the battery plate is limited and fixed by the self-clamping assembly (5), the linkage assembly (6) is used for adjusting the spacing between the two limiting guide assemblies (4), when the linkage assembly (6) is in the initial state, the spacing between the two limiting guide assemblies (4) is the minimum value, the material diffusion cavity (11) and the gas diffusion cavity (12) are respectively used for paint spraying and hot air heating.

2. A flow battery bipolar plate surface densification coating apparatus according to claim 1, wherein: The end of the material diffusion cavity (11) away from the installation plate (1) is fixedly connected with a material pipe (9), the two material pipes (9) are fixedly connected with a No. 2 three-way valve (8), and the input end of the No. 2 three-way valve (8) is connected with an external paint spraying device.

3. A flow battery bipolar plate surface densification coating apparatus according to claim 2, wherein: The end of the gas diffusion cavity (12) away from the installation plate (1) is fixedly connected with a gas pipe (10), the two gas pipes (10) are fixedly connected with a No. 1 three-way valve (7), and the input end of the No. 1 three-way valve (7) is connected with an external high-pressure hot air machine.

4. A flow battery bipolar plate surface densification coating apparatus according to claim 3, wherein: The self-clamping assembly (5) comprises a material supporting plate (501), a bidirectional electric telescopic rod (502) is fixedly installed in the middle of the material supporting plate (501), and the left and right ends of the bidirectional electric telescopic rod (502) penetrate one end of the material supporting plate (501) and are fixedly connected with clamping plates (503).

5. A flow battery bipolar plate surface densification coating apparatus according to claim 4, wherein: The upper and lower ends of the clamping plate (503) away from the bidirectional electric telescopic rod (502) are fixedly installed with limiting clamping blocks (504), and the limiting clamping blocks (504) are movably connected with the limiting guide assembly (4).

6. A flow battery bipolar plate surface densification coating apparatus according to claim 5, wherein: The limiting guide assembly (4) comprises a longitudinal guide column (401), and the upper and lower ends of the longitudinal guide column (401) are fixedly installed with transverse guide blocks (402), the transverse guide blocks (402) are movably connected with the extended guide rail (3), and the end of the transverse guide block (402) away from the installation plate (1) is fixedly connected with an extension rod (403), and one end of the extension rod (403) penetrates one side of the extended guide rail (3) and is movably sleeved with the extended guide rail (3).

7. A flow battery bipolar plate surface densification coating apparatus according to claim 6, wherein: One end of the extension rod (403) is connected with the linkage assembly (6), the longitudinal guide column (401) is fixedly installed with a limiting guide rail (404) near the upper and lower ends, and the limiting guide rail (404) is movably connected with the limiting clamping block (504) when the self-clamping assembly (5) is clamped with the limiting guide assembly (4).

8. A flow battery bipolar plate surface densification coating apparatus according to claim 7, wherein: The linkage assembly (6) comprises a movable frame (601), the bottom end of the movable frame (601) is fixedly installed with a passive telescopic rod (606), the bottom end of the passive telescopic rod (606) is connected with the mounting plate (1) above, the left and right sides of the bottom end of the movable frame (601) are both installed with a first fixed seat (602), one end of the first fixed seat (602) away from the movable frame (601) is movably connected with a linkage rod (604) through a rotating shaft, and one end of the linkage rod (604) away from the first fixed seat (602) is movably connected with a second fixed seat (603) through a rotating shaft.

9. A flow battery bipolar plate surface densification coating apparatus according to claim 8, wherein: The bottom end of the second fixed seat (603) is fixedly installed with a movable plate (605), the movable plate (605) is connected with the extension rod (403), and the passive telescopic rod (606) is in an initial state, and the movable frame (601) is at the lowest point.

10. The coating method of claim 9, wherein: The method comprises the following steps: S1: when the battery plate is coated, the self-clamping assembly (5) is taken out as a whole by pulling the extension push rod (505), so that the self-clamping assembly (5) is separated from the limiting guide assembly (4), the battery plate is placed on the material supporting plate (501), and the two-way electric telescopic rod (502) is started to drive the two clamping plates (503) to relatively approach until the two ends of the battery plate are contacted and the battery plate is fixed; S2: after the limiting and fixing of the battery plate are completed, the movable frame (601) is pressed downward, so that the passive telescopic rod (606) is compressed, the two linkage rods (604) are deflected, the two limiting guide rails (404) are away from each other, the spacing between the two limiting guide rails (404) is matched with the spacing between the two clamping plates (503), the extension push rod (505) is pushed inward, the limiting clamping block (504) and the limiting guide rail (404) are clamped, and positioning before coating is realized; S3: when the self-clamping assembly (5) moves backward as a whole, the hot air output by the gas diffusion cavity (12) is started to cool the battery plate, the coating is completed by spraying the coating material from the material diffusion cavity (11) when the self-clamping assembly (5) continues to move backward, and the coating of the plate is completed; S4: after the coating of the surface of the plate is completed, the hot air output by the gas diffusion cavity (12) is kept, the self-clamping assembly (5) is pulled out, the coated plate can be contacted with the hot air again, the auxiliary solidification process is completed, the self-clamping assembly (5) is separated from the limiting guide assembly (4), the discharging process of the plate is completed, the above process is repeated, and continuous coating processing is completed.

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