A slurry delivery system for electrode coating
By designing AGV trolleys and circulating pipeline groups, the problems of difficult cleaning and cumbersome replacement of slurry conveying systems in traditional electrode coating machines have been solved, thereby improving the stability of slurry conveying and production efficiency, simplifying the operation process, and improving the quality and production efficiency of electrode coating.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 国兴(东莞)新能源科技有限公司
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional electrode coating machine slurry conveying systems suffer from complex pipelines, leading to difficulties in cleaning and cumbersome slurry formula changes, which affect coating quality and production efficiency.
An AGV (Automated Guided Vehicle) trolley moves the mixing tank between the slurry turnover mechanism and the conveying pipeline system. Combined with the circulation pipeline group and switching pipeline, it realizes flexible slurry conveying and multi-head coating. The slurry is purified by a filter and residual slurry is recovered by a recycling pipeline, simplifying the operation process.
It reduces pipeline residual contamination, improves the stability and production efficiency of slurry delivery, simplifies changeover operations, reduces equipment costs and complexity, and enhances the quality and production efficiency of electrode coating.
Smart Images
Figure CN224542196U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of electrode manufacturing, and in particular to a slurry conveying system for electrode coating. Background Technology
[0002] In the electrode manufacturing industry, the coating process is a key step in electrode production. Its core lies in uniformly coating the prepared slurry onto the surface of the substrate, and the stable delivery of the slurry directly affects the coating quality and production efficiency.
[0003] Currently, conventional coating machine slurry conveying systems adopt a "fixed pipeline + supply tank" model: after the slurry is mixed by the mixer, it is conveyed to the supply tank of the coating machine head through a dedicated pipeline in a one-to-one manner, and then conveyed to the coating die head through the pipeline connected to the supply tank, finally completing the coating operation. However, this traditional conveying system has the following significant drawbacks: 1. The conveying pipeline between the mixer and the storage tank is usually long and has a complex structure, making it difficult to clean the inside of the pipeline. When changing to a different slurry formula, the residual old slurry is easily mixed into the new slurry, affecting the stability of the slurry composition. The longer the pipeline, the greater the impact, which in turn leads to defects in the coated electrode and reduces the product qualification rate; 2. When facing multi-die coating or multi-layer coating requirements, if the traditional conveying system needs to change the slurry formula, it is necessary to disassemble and replace the pipeline connected to the target die head accordingly. The operation is cumbersome and time-consuming, affecting the production efficiency of the coating process, which urgently needs to be solved. Utility Model Content
[0004] To address the shortcomings of the prior art, this application provides a slurry delivery system for electrode coating.
[0005] The above-mentioned inventive objective of this application is achieved through the following technical solutions: A slurry delivery system for electrode coating includes: Coating die head, which is used to coat the electrode sheet; A slurry turnover mechanism, used to prepare electrode coating slurry; A delivery pipeline system, which is connected to the coating die head; An AGV trolley, which carries a mixing tank on its upper part and is used to move the mixing tank between the slurry turnover mechanism and the conveying pipeline system; When the AGV trolley moves to the slurry turnover mechanism, the slurry turnover mechanism is connected to the mixing tank and transports the prepared electrode coating slurry to the mixing tank. When the AGV moves to the conveying pipeline system, the conveying pipeline system is connected to the mixing tank and conveys the electrode coating slurry in the mixing tank to the coating die head.
[0006] Preferably, the coating die head is a single-channel coating head, and the conveying pipeline system includes a circulation pipeline group and a pump body. The pump body is connected to the circulation pipeline group, and the circulation pipeline group is connected to the die head pipeline. The die head pipeline is connected to the coating die head. A three-way valve is installed in the circulation pipeline group at the die head pipeline. The three-way valve is connected to the circulation pipeline and the die head pipeline. The mixing tank has an inlet and an outlet. The circulation pipeline group has an inlet interface and an outlet interface corresponding to the inlet and outlet, respectively. When the AGV moves to the conveying pipeline system, the inlet and outlet are connected to the inlet and outlet interfaces of the circulating pipeline group, respectively.
[0007] Preferably, the coating die head is provided with multiple single-channel coating heads. The conveying pipeline system includes multiple sets of circulating pipeline groups, multiple pump bodies, a first switching pipeline and a second switching pipeline. The pump bodies, circulating pipeline groups and coating dies are one-to-one. Each pump body is connected to the corresponding circulating pipeline group. Each circulating pipeline group is connected to the die head pipeline. The die head pipeline is connected to the corresponding coating die head. A three-way valve is provided at the die head pipeline of the circulating pipeline group. The three-way valve is connected to the circulating pipeline and the die head pipeline. The mixing tank has an inlet and an outlet. Each circulating pipeline group has several inlet and outlet ports corresponding to the number of AGV trolleys. The number of first and second switching pipelines is provided with multiple ports corresponding to the number of AGV trolleys. The first switching pipeline connects to the adjacent inlet ports of all circulating pipeline groups. The second switching pipeline connects to the adjacent outlet ports of all circulating pipeline groups. A first switching valve is provided at the inlet port position of the first switching pipeline corresponding to each circulating pipeline group and at the outlet port position of the second switching pipeline corresponding to each circulating pipeline group. When the AGV moves to the conveying pipeline system, the inlet and outlet are respectively connected to the inlet and outlet interfaces of any circulating pipeline group.
[0008] Preferably, the coating die head is a multi-channel coating head, and the conveying pipeline system includes multiple sets of circulating pipeline groups, multiple pump bodies, a first switching pipeline and a second switching pipeline. The pump bodies and circulating pipeline groups correspond one-to-one, and each pump body is connected to the corresponding circulating pipeline group. Each circulating pipeline group is connected to a die head pipeline, and each die head pipeline is connected to the coating die head. Each circulating pipeline group is equipped with a three-way valve at the corresponding die head pipeline, and the three-way valve is connected to the circulating pipeline and the die head pipeline. The mixing tank has an inlet and an outlet. Each circulating pipeline group has several inlet and outlet ports corresponding to the number of AGV trolleys. The number of first and second switching pipelines corresponds to the number of AGV trolleys. The first switching pipeline connects to the adjacent inlet ports of all circulating pipeline groups, and the second switching pipeline connects to the adjacent outlet ports of all circulating pipeline groups. A first switching valve is provided at the inlet port position of the first switching pipeline corresponding to each circulating pipeline group, and at the outlet port position of the second switching pipeline corresponding to each circulating pipeline group. When the AGV moves to the conveying pipeline system, the inlet and outlet are respectively connected to the inlet and outlet interfaces of any circulating pipeline group.
[0009] Preferably, the delivery pipeline system further includes a filter, which is connected to the circulation pipeline group.
[0010] Preferably, a second switching valve is connected to both the inlet and outlet of the mixing tank.
[0011] Preferably, the circulating pipeline group is connected to a recovery pipeline, and a third switch valve is connected to the end of the recovery pipeline.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By using an AGV trolley to move the mixing tank between the slurry turnover mechanism and the conveying pipeline system, the cleaning difficulties caused by long and complex pipelines can be reduced, improving the convenience of the feeding process and increasing production efficiency. At the same time, the conveying pipeline system can be connected to multiple sets of circulating pipelines in combination with the first and second switching pipelines, allowing the coating module to be flexibly connected to multiple sets of circulating pipelines. When changing the slurry formula or changing the coating die head, there is no need to disassemble and replace the pipeline; only different first switching valves need to be switched to complete the changeover, simplifying the operation process, shortening the changeover time, and improving production efficiency. In addition, the filter can further purify the slurry, the recovery pipeline facilitates the recycling of the slurry, and the second switching valve enhances the system's sealing and operational controllability, thus improving the overall stability and economy of electrode coating slurry conveying. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the system structure in a single-channel coating operation according to an embodiment of this application; Figure 2This is a schematic diagram of the system structure in the case of multiple single-channel coating dies in one embodiment of this application; Figure 3 This is a schematic diagram of the system structure of a multi-layer coating die head in operation according to one embodiment of this application.
[0014] Reference numerals: 1. Coating die head; 2. Slurry turnover mechanism; 3. Conveying pipeline system; 301. Circulation pipeline group; 302. Pump body; 303. Die head pipeline; 304. Three-way valve; 305. Feed port; 306. Discharge port; 307. First switching pipeline; 308. Second switching pipeline; 309. First switching valve; 310. Filter; 311. Recovery pipeline; 312. Third switching valve; 4. AGV trolley; 5. Mixing tank; 6. Feed inlet; 7. Discharge outlet; 8. Second switching valve. Detailed Implementation
[0015] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.
[0016] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.
[0017] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.
[0018] The following is a reference appendix. Figure 1 To be continued Figure 3 This application describes a slurry delivery system for electrode coating.
[0019] Reference Figures 1 to 3The slurry conveying system for electrode coating includes a coating die 1, a slurry turnover mechanism 2, a conveying pipeline system 3, and an AGV trolley 4. The coating die 1 is used to coat the electrode, the slurry turnover mechanism 2 is used to prepare the electrode coating slurry, and the AGV trolley 4 has a mixing tank 5 mounted on its upper part and is used to move the mixing tank 5 between the slurry turnover mechanism 2 and the conveying pipeline system 3. The conveying pipeline system 3 is connected to the coating die 1. When the AGV trolley 4 moves to the slurry turnover mechanism 2, the slurry turnover mechanism 2 is connected to the mixing tank 5 and... The prepared electrode coating slurry is transported to the mixing tank 5. When the AGV trolley 4 moves to the conveying pipeline system 3, the conveying pipeline system 3 is connected to the mixing tank 5 and transports the electrode coating slurry in the mixing tank 5 to the coating die head 1. The AGV trolley 4 drives the mixing tank 5 to move between the slurry turnover mechanism 2 and the conveying pipeline system 3, which can complete the transfer and docking of the slurry. It also eliminates the need for traditional fixed long pipelines, reduces pipeline residual pollution, and improves the flexibility and automation efficiency of the conveying by using the automated transportation of AGV.
[0020] It should be noted that the AGV trolley 4 can be a conventional automated guided vehicle on the market. Its upper part is equipped with a positioning structure adapted to the mixing tank 5, which can stably carry the mixing tank 5 and drive autonomously according to the preset route. The positioning structure can use mechanical positioning structures such as claw component structure, positioning groove combined with limit block combination structure, vacuum adsorption fixing structure, etc. to fix the mixing tank 5. There are no restrictions here. The slurry turnover mechanism 2 can be a conventional slurry mixing equipment on the market, such as planetary mixer, twin screw mixer, etc. There are no restrictions here. The slurry turnover mechanism 2 mixes the active material, binder, solvent and other raw materials evenly to form a stable slurry. It works with the AGV trolley 4. After the mixing is completed, the AGV trolley 4 carries the mixing tank 5 to the discharge port 7 of the equipment. The slurry is poured into the mixing tank 5 through the discharge port 7 or pipeline, completing the automated connection from slurry preparation to transfer.
[0021] Specifically, in one embodiment, the coating die head 1 is a single-channel coating head, and the conveying pipeline system 3 includes a circulation pipeline group 301 and a pump body 302. The pump body 302 is connected to the circulation pipeline group 301, and the circulation pipeline group 301 is connected to the die head pipeline 303. The die head pipeline 303 is connected to the coating die head 1. A three-way valve 304 is provided at the die head pipeline 303 in the circulation pipeline group 301. The three-way valve 304 is connected to the circulation pipeline and the die head pipeline 303. The mixing tank 5 has an inlet 6 and an outlet 7. The circulation pipeline group 301 is provided with an inlet interface 305 and an outlet interface 306 corresponding to the inlet 6 and the outlet 7, respectively. When the AGV trolley 4 moves to the conveying pipeline system 3, the inlet 6 and outlet 7 are respectively connected to the inlet interface 305 and outlet interface 306 of the circulation pipeline group 301. In the single-channel coating scenario, the circulation pipeline group 301 is precisely connected to the mixing tank 5 on the AGV trolley 4 through the inlet interface 305 and outlet interface 306. The pump body 302 drives the slurry to circulate. The three-way valve 304 can control the slurry to flow to the die head pipeline 303 or continue to circulate. This not only ensures the uniformity of the slurry, but also simplifies the docking process between the AGV trolley 4 and the pipeline system through the dedicated interface, thereby improving the stability and docking efficiency of single-channel coating.
[0022] It should be noted that when docking the inlet 6 and outlet 7 with the inlet interface 305 and outlet interface 306 of the circulation pipe group 301, a conventional visual recognition system or laser ranging system can be used in conjunction with the AGV trolley 4 to achieve precise alignment. A brief example is as follows: By setting a camera or laser ranging sensor on the top of the AGV trolley 4, the camera captures the feature points of the docking interface (such as positioning pins and edge contours), and the position deviation is calculated through image algorithms. The laser ranging sensor measures the distance and angle to the target interface in real time. Based on these visual and laser data, the control system and drive system of the AGV trolley 4 achieve precise docking through PID control. The principles of the visual recognition system, laser ranging system, and PID control of the AGV trolley 4 are common knowledge to those skilled in the art and will not be elaborated here.
[0023] In another embodiment, the coating die head 1 is provided with multiple single-channel coating heads. The delivery pipeline system 3 includes multiple sets of circulation pipeline groups 301, multiple pump bodies 302, a first switching pipeline 307, and a second switching pipeline 308. The pump bodies 302, circulation pipeline groups 301, and coating die heads 1 are in one-to-one correspondence. Each pump body 302 is connected to the corresponding circulation pipeline group 301. Each circulation pipeline group 301 is connected to a die head pipeline 303, which is connected to the corresponding coating die head 1. The circulation pipeline group 301 is located in the die head 1. A three-way valve 304 is installed at the head pipe 303, connecting the circulation pipe and the head pipe 303. The mixing tank 5 has an inlet 6 and an outlet 7. Each group of circulation pipes 301 has several inlet ports 305 and outlet ports 306 corresponding to the number of AGV carts 4. The number of first switching pipes 307 and second switching pipes 308 corresponds to the number of AGV carts 4. The first switching pipe 307 connects to the adjacent inlet ports 305 of all circulation pipe groups 301. The second switching pipe 307 connects to the adjacent inlet ports 305 of all circulation pipe groups 301. 08 connects the adjacent discharge ports 306 of all circulating pipe groups 301. The first switching pipe 307 corresponds to the inlet port 305 of each circulating pipe group 301, and the second switching pipe 308 corresponds to the discharge port 306 of each circulating pipe group 301. A first switching valve 309 is provided at each of these locations. When the AGV trolley 4 moves to the conveying pipeline system 3, the inlet port 6 and the outlet port 7 are respectively connected to the inlet port 305 and the outlet port 306 of any circulating pipe group 301. This is particularly relevant in multi-channel coating heads. In the scenario, multiple sets of circulating pipeline groups 301 are linked with the first switching pipeline 307 and the second switching pipeline 308. The multiple inlet ports 305 and outlet ports 306 of each set of circulating pipeline groups 301 are adapted to the docking requirements of the inlet port 6 and outlet port 7 of the mixing tank 5 on the AGV trolley 4. The first switching valve 309 can control the opening and closing of a specific circulating pipeline group 301, realizing flexible connection between the mixing tank 5 and any single-channel coating head. The changeover can be completed without disassembling the pipeline, which significantly shortens the changeover time for multi-variety production and improves production flexibility. It should be noted that in the above embodiments, the AGV trolley 4 and the mixing tank 5 can be set in multiple ways corresponding to the number of circulating pipe groups 301 and coating heads 1. Each AGV trolley 4 drives the mixing tank 5 to move to the feed interface 305 and discharge interface 306 of the corresponding circulating pipe group 301 for connection, so as to realize multi-line production and flexible connection between any mixing tank 5 and any single-channel coating head.
[0024] In another embodiment, the coating die head 1 is a multi-channel coating head, and the delivery pipeline system 3 includes multiple sets of circulation pipeline groups 301, multiple pump bodies 302, a first switching pipeline 307, and a second switching pipeline 308. Each pump body 302 corresponds one-to-one with a circulation pipeline group 301, and each pump body 302 is connected to its corresponding circulation pipeline group 301. Each circulation pipeline group 301 is connected to a die head pipeline 303, and each die head pipeline 303 is connected to the coating die head 1. 01. A three-way valve 304 is installed at each corresponding die head pipe 303. The three-way valve 304 connects the circulation pipe and the die head pipe 303. The mixing tank 5 has an inlet 6 and an outlet 7. Each group of circulation pipes 301 has several inlet ports 305 and outlet ports 306 corresponding to the number of AGV carts 4. The number of first switching pipes 307 and second switching pipes 308 corresponds to the number of AGV carts 4. The number of first switching pipes 307 and second switching pipes 308 is multiple, corresponding to the number of AGV carts 4. The first switching pipe 307 connects to all circulation pipes. The adjacent feed inlets 305 of the pipeline group 301 and the adjacent discharge inlets 306 of all the circulating pipeline groups 301 are connected by the second switching pipe 308. The first switching pipe 307 is provided with a first switching valve 309 corresponding to the feed inlet 305 of each circulating pipeline group 301 and the second switching pipe 308 is provided with a first switching valve 309 corresponding to the discharge inlet 306 of each circulating pipeline group 301. When the AGV trolley 4 moves to the conveying pipeline system 3, the feed inlet 6 and the discharge outlet 7 are respectively connected to the feed inlet 305 and the discharge outlet 306 of any circulating pipeline group 301. In the multi-channel coating head scenario, multiple circulating pipeline groups 301 can deliver slurry to different channels of the multi-channel coating head through the control of the first switching pipe 307 and the second switching pipe 308 in conjunction with the first switching valve 309, which meets the differentiated slurry requirements of multi-layer electrode coating. There is no need to set up a separate conveying system for each coating layer, which simplifies the equipment structure and reduces the equipment cost and operation complexity of multi-layer coating.
[0025] Furthermore, the delivery pipeline system 3 also includes a filter 310, which is connected to the circulation pipeline group 301. The filter 310 filters the slurry in the circulation pipeline group 301, removing particulate impurities from the slurry and preventing impurities from clogging the coating die head 1 or causing electrode defects, thereby further improving the purity of the slurry. Specifically, the filter 310 can be an iron removal filter 310, which can remove ferromagnetic impurities (such as iron filings, rust, metal particles, etc.) from the slurry, thereby improving the quality of the electrode.
[0026] Preferably, a second switch valve 8 is connected to both the inlet 6 and the outlet 7 of the mixing tank 5. By setting the second switch valve 8, the inlet 6 and the outlet 7 of the mixing tank 5 can be opened when docking and closed when disconnecting, effectively controlling the flow of slurry, preventing slurry leakage during transportation or docking, and enhancing the sealing of the conveying system.
[0027] Preferably, the circulation pipeline group 301 is connected to a recovery pipeline 311, and the end of the recovery pipeline 311 is connected to a third switch valve 312. By setting up the recovery pipeline 311 and the third switch valve 312, the circulation pipeline can recover the residual slurry in the pipeline and the coating die head 1 when changing the type or stopping the machine, reducing raw material waste, and facilitating subsequent pipeline cleaning, avoiding cross-contamination of different formulation slurries.
[0028] It should be noted that the first switching valve 309, the second switching valve 8, and the third switching valve 312 mentioned above can all be conventional automatic valves available on the market, such as pneumatic valves, electric valves, solenoid valves, hydraulic valves, etc. There are no restrictions here. The specific usage of the first switching valve 309, the second switching valve 8, and the third switching valve 312 needs to be adjusted according to the different types of valves selected, which will not be elaborated here.
[0029] The implementation principle of a slurry conveying system for electrode coating in this application embodiment is as follows: the AGV trolley 4 loads the mixing tank 5 and moves between the slurry turnover mechanism 2 and the conveying pipeline system 3, constructing a modular automated process in the order of preparation, transfer and coating. In the slurry preparation stage, the AGV trolley 4 moves to the slurry turnover mechanism 2 and is precisely aligned so that the feed port 6 of the mixing tank 5 is connected to the slurry turnover mechanism 2 to receive the prepared slurry. In the transfer stage, the AGV trolley 4 moves along a preset path to the conveying pipeline system 3 and precisely connects the feed port 6 and the discharge port 7 of the mixing tank 5 with the feed interface 305 and the discharge interface 306 of the circulation pipeline group 301, respectively. In the single-channel coating process, the pump body 302 drives the slurry to flow in the circulation pipeline group 301. The three-way valve 304 can be switched to the circulation state to maintain the uniformity of the slurry. During coating, it is switched to the die head pipeline 303 to supply material to the single-channel coating die head 1. In the multi-channel coating die head 1 working condition, multiple sets of circulation pipe groups 301 are connected in parallel through the first switching pipe 307 and the second switching pipe 308. With the control of the first switching valve 309, the mixing tank 5 can be connected to any circulation pipe group 301, and different formulation slurries can be flexibly supplied to different single-channel coating dies 1. In the multi-layer coating die head 1 working condition, the die head pipes 303 of multiple sets of circulation pipe groups 301 are all connected to the multi-channel coating die head 1. By switching the corresponding switching valves, different slurries can be delivered to different channels of the die head at the same time, so as to achieve one-time coating of multi-layer electrode sheets.
[0030] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A slurry conveying system for electrode coating, characterized in that, include: Coating die (1), which is used to coat the electrode sheet; The slurry turnover mechanism (2) is used to prepare electrode coating slurry; The delivery pipeline system (3) is connected to the coating die head (1); An AGV trolley (4) is loaded with a mixing tank (5) on its upper part and is used to drive the mixing tank (5) to move between the slurry turnover mechanism (2) and the conveying pipeline system (3); When the AGV trolley (4) moves to the slurry turnover mechanism (2), the slurry turnover mechanism (2) is connected to the mixing tank (5) and transports the prepared electrode coating slurry to the mixing tank (5); When the AGV trolley (4) moves to the conveying pipeline system (3), the conveying pipeline system (3) is connected to the mixing tank (5) and conveys the electrode coating slurry in the mixing tank (5) to the coating die head (1).
2. The slurry conveying system for electrode coating as described in claim 1, characterized in that, The coating die (1) is a single-channel coating head. The conveying pipeline system (3) includes a circulation pipeline group (301) and a pump body (302). The pump body (302) is connected to the circulation pipeline group (301). The circulation pipeline group (301) is connected to the die head pipeline (303). The die head pipeline (303) is connected to the coating die (1). The circulation pipeline group (301) is equipped with a three-way valve (304) at the die head pipeline (303). The three-way valve (304) is connected to the circulation pipeline and the die head pipeline (303). The mixing tank (5) is provided with a feed inlet (6) and a discharge outlet (7). The circulation pipeline group (301) is provided with a feed interface (305) and a discharge interface (306) corresponding to the feed inlet (6) and the discharge outlet (7), respectively. When the AGV (4) moves to the conveying pipeline system (3), the inlet (6) and outlet (7) are connected to the inlet (305) and outlet (306) of the circulating pipeline group (301), respectively.
3. The slurry conveying system for electrode coating as described in claim 1, characterized in that, The coating die (1) is equipped with multiple single-channel coating heads. The conveying pipeline system (3) includes multiple sets of circulation pipeline groups (301), multiple pump bodies (302), a first switching pipeline (307), and a second switching pipeline (308). The pump bodies (302), circulation pipeline groups (301), and coating dies (1) correspond one-to-one. Each pump body (302) is connected to the corresponding circulation pipeline group (301). Each circulation pipeline group (301) is connected to a die head pipeline (303). The die head pipeline (303) is connected to the corresponding coating die (1). A three-way valve (304) is installed at the die head pipeline (303) in the circulation pipeline group (301). The three-way valve (304) is connected to the circulation pipeline and the die head pipeline (303). The mixing tank (5) has an inlet (6) and an outlet (6). 7) Each group of circulating pipes (301) is provided with several feed inlets (305) and discharge inlets (306) corresponding to the number of AGV trolleys (4). The number of first switching pipes (307) and second switching pipes (308) is set to multiple corresponding to the number of AGV trolleys (4). The first switching pipe (307) connects to the adjacent feed inlets (305) of all circulating pipe groups (301), and the second switching pipe (308) connects to the adjacent discharge inlets (306) of all circulating pipe groups (301). The first switching pipe (307) is provided with a first switching valve (309) corresponding to the feed inlet (305) position of each circulating pipe group (301), and the second switching pipe (308) is provided with a discharge inlet (306) position of each circulating pipe group (301). When the AGV (4) moves to the conveying pipeline system (3), the inlet (6) and outlet (7) are respectively connected to the inlet (305) and outlet (306) of any circulating pipeline group (301).
4. The slurry conveying system for electrode coating as described in claim 1, characterized in that, The coating die (1) is a multi-channel coating head. The conveying pipeline system (3) includes multiple sets of circulation pipeline groups (301), multiple pump bodies (302), a first switching pipeline (307) and a second switching pipeline (308). The pump bodies (302) and circulation pipeline groups (301) correspond one-to-one. Each pump body (302) is connected to the corresponding circulation pipeline group (301). Each circulation pipeline group (301) is connected to a die head pipeline (303). Each die head pipeline (303) is connected to the coating die (1). Each circulation pipeline group (301) is equipped with a three-way valve (304) at the corresponding die head pipeline (303). The three-way valve (304) is connected to the circulation pipeline and the die head pipeline (303). The mixing tank (5) has an inlet (6) and an outlet (7). Each circulating pipe group (301) has several feed inlets (305) and discharge inlets (306) corresponding to the number of AGV trolleys (4). The number of first switching pipes (307) and second switching pipes (308) corresponds to the number of AGV trolleys (4). The first switching pipe (307) connects to the adjacent feed inlets (305) of all circulating pipe groups (301), and the second switching pipe (308) connects to the adjacent discharge inlets (306) of all circulating pipe groups (301). The first switching pipe (307) is equipped with a first switching valve (309) corresponding to the feed inlet (305) position of each circulating pipe group (301), and the second switching pipe (308) is equipped with a first switching valve (309) corresponding to the discharge inlet (306) position of each circulating pipe group (301). When the AGV (4) moves to the conveying pipeline system (3), the inlet (6) and outlet (7) are respectively connected to the inlet (305) and outlet (306) of any circulating pipeline group (301).
5. A slurry conveying system for electrode coating as described in any one of claims 2 to 4, characterized in that, The delivery pipeline system (3) also includes a filter (310), which is connected to the circulation pipeline group (301).
6. A slurry conveying system for electrode coating as described in any one of claims 2 to 4, characterized in that, A second switch valve (8) is connected to both the inlet (6) and outlet (7) of the mixing tank (5).
7. A slurry conveying system for electrode coating as described in any one of claims 2 to 4, characterized in that, The circulating pipeline group (301) is connected to a recovery pipeline (311), and a third switch valve (312) is connected to the end of the recovery pipeline (311).