Electrode slurry sampling device

Abstract

The utility model relates to an electrode slurry sampling device which comprises a supporting module and a sampling module 200 arranged on the supporting module, the sampling module 200 comprises a sample injection pipeline, a sampling module 200, a sampling module 200 and a sampling module 200, and the inlet end of the sample injection pipeline is communicated with a slurry storage tank; the metering pump is arranged on the sample injection pipeline; the three-way valve is arranged at the liquid outlet end of the sample introduction pipeline and is provided with an inlet, a circulation port and a sample discharge port, and the inlet is communicated with the liquid outlet end of the sample introduction pipeline; the inlet end of the circulating pipeline is connected with the circulating port, and the liquid outlet end of the circulating pipeline is communicated with the slurry storage tank; wherein the three-way valve is configured to be capable of switching between a first state and a second state, the first state is that the inlet is communicated with the sample discharging port, and the second state is that the inlet is communicated with the circulating port. According to the technical scheme, automatic quantitative sampling is achieved, the problems that traditional manual sampling is poor in consistency and low in efficiency are solved, and the slurry detection accuracy and the production efficiency in the battery production process are improved.

Description

Technical Field

[0001] This application relates to the field of battery production technology, and in particular to an electrode slurry sampling device. Background Technology

[0002] In the production process of lithium-ion batteries, electrodes are generally made by coating a slurry. Key parameters such as the uniformity and viscosity of the slurry determine the coating quality, which in turn affects the battery's capacity, lifespan, and safety. Therefore, rapid, accurate, and representative sampling and testing of the slurry before and during the coating process is a crucial step in ensuring battery quality.

[0003] Currently, slurry sampling is generally done manually. Operators need to manually operate the valves on the slurry storage tank, use beakers or other containers to collect the flowing slurry, and close the valves at regular intervals. Manual sampling is characterized by high safety risks, poor sampling consistency, and low sampling efficiency. Utility Model Content

[0004] Therefore, it is necessary to provide an electrode slurry sampling device to address the problems of high safety risks, poor sampling consistency, and low sampling efficiency associated with manual sampling of electrode slurry in related technologies.

[0005] This application provides an electrode slurry sampling device, including a support module and a sampling module disposed on the support module. The sampling module includes: a sampling pipeline, the inlet end of which is connected to a slurry storage tank; a metering pump disposed on the sampling pipeline; a three-way valve disposed on the outlet end of the sampling pipeline, the three-way valve having an inlet, a circulation port, and a discharge port, the inlet being connected to the outlet end of the sampling pipeline; and a circulation pipeline, the inlet end of which is connected to the circulation port, and the outlet end of which is connected to the slurry storage tank; wherein, the three-way valve is configured to switch between a first state and a second state, the first state being that the inlet is connected to the discharge port, and the second state being that the inlet is connected to the circulation port.

[0006] The aforementioned electrode slurry sampling device features a support module that provides a stable mounting platform for all components of the sampling module, ensuring structural stability of the entire sampling system during operation and guaranteeing the stability of subsequent slurry delivery and sampling. The inlet end of the injection pipeline is connected to the slurry storage tank, establishing a slurry delivery channel from the storage tank to the sampling module, allowing the slurry to smoothly enter the sampling process. A quantitative pump is installed on the injection pipeline, enabling precise control of the slurry delivery flow rate, avoiding the instability problem of flow rate during manual sampling, and providing assurance for quantitative sampling. A three-way valve is located at the outlet end of the injection pipeline, with its inlet connected to the injection pipeline and its circulation port connected to the circulation pipeline, the outlet end of which is connected to the slurry storage tank. This allows the slurry to circulate among the storage tank, injection pipeline, three-way valve, and circulation pipeline when the three-way valve is in its second state, effectively preventing slurry solidification and deposition when it remains in the pipeline, ensuring unobstructed pipeline flow and stable slurry performance. When the three-way valve is switched to the first state, the inlet is connected to the discharge port, and the slurry can be discharged through the discharge port without the need for manual valve opening and closing, avoiding the risk of operators directly contacting corrosive slurry. At the same time, combined with the precise control of the metering pump, automatic quantitative sampling is realized, solving the problems of poor consistency and low efficiency of traditional manual sampling, and improving the accuracy of slurry detection and production efficiency in the battery production process.

[0007] In some embodiments, the electrode slurry sampling device further includes a support platform disposed on the support module and located below the discharge port, the support platform being used to support the sampling container.

[0008] In the above embodiments, the support platform is mounted on the support module, providing a stable foundation for the sampling container. Located below the discharge port, the platform allows the slurry discharged from the port to fall vertically into the sampling container, reducing slurry splashing and spillage. This ensures accurate sampling and avoids slurry waste and environmental pollution. Furthermore, the support platform ensures a relatively fixed position for the sampling container, eliminating the need for manual handling to catch the slurry and further reducing the risk of operators coming into contact with corrosive slurries. Combined with the automatic discharge function of the sampling module, the entire sampling process better meets the needs of automated production, improving the convenience and safety of the sampling operation.

[0009] In some embodiments, a limiting part is provided on the carrier platform, the limiting part defining a limiting space for accommodating the sampling container.

[0010] In the above embodiments, the limiting part on the support platform defines a dedicated limiting space. After the sampling container is placed in this space, it can be effectively fixed in position, avoiding the displacement of the sampling container caused by factors such as equipment vibration and robot collisions during sampling. This ensures that the slurry discharged from the discharge port always falls accurately into the container, guaranteeing the integrity and accuracy of the sample volume. The protective edge structure of the limiting part can prevent the sampling container from tipping over, especially for corrosive lithium battery slurries, preventing slurry leakage, personnel injury, and environmental pollution caused by container tipping. At the same time, the limiting space provides a clear placement position for the sampling container, improving the accuracy and efficiency of the composite robot's automatic container handling, reducing operational delays caused by positioning deviations, further adapting to the needs of fully automated sampling and testing, and significantly improving the stability and reliability of the entire sampling process.

[0011] In some embodiments, the sampling module further includes a discharge connector connected to the discharge port; the electrode slurry sampling device further includes a cleaning module disposed on the support module, the cleaning module including: a cleaning head, the cleaning head being provided with a plurality of nozzles, the nozzles spraying in the direction from the outlet end of the discharge connector toward its inner wall; and a high-pressure cleaning mechanism connected to the cleaning head, the high-pressure cleaning mechanism being used to provide cleaning fluid to the cleaning head.

[0012] In the above embodiments, the discharge connector is connected to the discharge port, providing a stable channel for slurry discharge. This avoids splashing and flow deviation when slurry is discharged directly from the discharge port, ensuring that the slurry falls accurately into the sampling container. The nozzle can be positioned so that the spray direction of the cleaning head faces the inner wall of the discharge connector. Combined with the high-pressure cleaning fluid provided by the high-pressure cleaning mechanism, it can directly rinse the inner wall of the discharge connector, providing targeted and effective removal of residual slurry after sampling. The high-pressure cleaning mechanism delivers the cleaning fluid under pressure, giving the cleaning fluid sprayed from the nozzle sufficient impact force to quickly peel off stubbornly attached slurry residue. This built-in cleaning function eliminates the need for manual disassembly and cleaning, avoiding operator contact with residual corrosive slurry, reducing operational risks, and ensuring the cleanliness of the discharge connector's interior. This prevents residual slurry from solidifying and clogging the pipeline or contaminating the next sample, ensuring the accuracy of sampling and testing results and the long-term stable operation of the equipment.

[0013] In some embodiments, the cleaning head is fitted onto the outlet end of the discharge connector; multiple nozzles are arranged around the central axis of the discharge connector.

[0014] In the above embodiments, the cleaning head is fitted onto the outlet end of the sampling connector, allowing the nozzle to be aimed closely at the inner wall of the connector. This reduces pressure loss during the cleaning fluid delivery process, ensuring the cleaning fluid acts on the residual slurry with sufficient impact force, thus improving the cleaning effect. Multiple nozzles are evenly arranged around the central axis of the sampling connector, forming a ring-shaped cleaning area that ensures 360° coverage of the inner wall of the connector, effectively removing stubborn residual slurry. This multi-nozzle layout, combined with high-pressure jetting, improves cleaning efficiency, shortens cleaning time, and avoids the risk of residual slurry solidifying and clogging the sampling connector. This ensures smooth subsequent sampling and the purity of the slurry sample, further enhancing the automated operational stability of the entire sampling device.

[0015] In some embodiments, the electrode slurry sampling device further includes a waste liquid collection module disposed on the support module. The waste liquid collection module includes: a waste liquid collection hopper with the collection port of the waste liquid collection hopper facing the discharge connector; a waste liquid collection pipe with one end connected to the waste liquid collection hopper and the inner diameter of the waste liquid collection pipe being smaller than the diameter of the collection port; and a waste liquid collection container with the other end of the waste liquid collection pipe connected to the waste liquid collection container.

[0016] In the above embodiments, the waste liquid collection hopper of the waste liquid collection module faces the discharge connector, enabling it to collect waste liquid generated when the cleaning module rinses the discharge connector, preventing waste liquid from splashing onto the support platform or the ground, and preventing corrosive waste liquid from polluting the operating environment, damaging equipment, or posing safety hazards to operators. One end of the waste liquid collection pipe is connected to the waste liquid collection hopper, and the other end is connected to the waste liquid collection container, reducing the evaporation and leakage of waste liquid during transmission and ensuring a clean and safe operating environment. The inner diameter of the waste liquid collection pipe is smaller than the diameter of the waste liquid collection hopper's opening, allowing the waste liquid to quickly flow through the waste liquid collection pipe after converging in the hopper. This centralized waste liquid collection design not only simplifies the subsequent waste liquid treatment process and reduces environmental treatment costs, but also further improves the automated supporting functions of the sampling device, forming a closed loop for the entire sampling, cleaning, and waste liquid treatment process, thus enhancing the practicality and environmental friendliness of the device.

[0017] In some embodiments, the waste liquid collection module further includes a drive mechanism, which is disposed on the support module and is connected to the waste liquid collection pipe in a transmission manner; the support platform is provided with a clearance opening; the drive mechanism is used to drive the waste liquid collection pipe to drive the waste liquid collection bucket through the clearance opening, so that the waste liquid collection bucket can be located on the side of the support platform that is close to or far from the discharge connector.

[0018] In the above embodiments, the drive mechanism is mounted on the support module and connected to the waste liquid collection pipe. Combined with the clearance opening on the support platform, it enables flexible switching between the waste liquid collection hopper and the cleaning work position. During sampling, the waste liquid collection hopper moves below the support platform, avoiding interference with the placement of the sampling container and the sampling process. This ensures the sampling container can be smoothly placed within the confined space to receive the slurry, guaranteeing the smoothness of the sampling process. During cleaning, the drive mechanism pushes the waste liquid collection hopper above the support platform, ensuring its collection port accurately faces the discharge connector, allowing for comprehensive collection of rinsing waste liquid and preventing leakage and environmental pollution. This switchable design allows for seamless integration of the sampling and cleaning processes, eliminating the need for manual adjustment of the waste liquid collection hopper's position. This further enhances the automation level of the device, reduces manual intervention, and ensures the effectiveness of both sampling and cleaning, making the entire device more efficient and intelligent.

[0019] In some embodiments, the inner diameter of the waste liquid collection hopper gradually decreases from the collection port of the waste liquid collection hopper to the outlet of the waste liquid collection hopper.

[0020] In the above embodiments, the conical structure of the waste liquid collection hopper, with its inner diameter gradually decreasing from the collection port to the outlet, guides the rinsing waste liquid to converge quickly, preventing it from stagnating inside the hopper and reducing the probability of residual slurry adhering to the inner wall, thus lowering the cleaning difficulty. The larger collection port ensures complete coverage of the area below the discharge connector, efficiently collecting all rinsing waste liquid and preventing splashing and leakage that could cause environmental pollution or equipment corrosion. The gradually narrowing inner diameter design allows the waste liquid to flow at a gradually increasing velocity, improving waste liquid transport efficiency.

[0021] In some embodiments, the waste liquid collection module further includes a weight detection component for detecting the weight of the waste liquid collection container.

[0022] In the above embodiments, the weight detection component detects the weight of the waste liquid collection container, providing real-time feedback on the amount of waste liquid stored in the container. This avoids the tedious manual operation of periodically checking the waste liquid level, saving labor costs. Simultaneously, real-time weight monitoring allows operators to rationally schedule waste liquid treatment, eliminating the need for frequent checks or premature treatment of unfilled containers, thus improving work efficiency and ensuring the continuous and stable operation of the entire sampling device. This further refines the automated waste liquid treatment process, making the device more convenient and safer to use.

[0023] In some embodiments, the metering pump is a gear pump.

[0024] In the above embodiments, the metering pump is specifically defined as a gear pump. Utilizing the fundamental structural feature of the gear pump—the meshing gears within the pump body forming a fixed-volume chamber—the volume of slurry discharged per revolution exhibits extremely high repeatability and certainty. This provides a stable and reliable hardware foundation for the metering core of the entire sampling device. The gear pump has a robust and simple structure with few moving parts. When conveying media with specific viscosities, such as electrode slurries, that may contain fine solid particles, it demonstrates excellent reliability and durability, reducing the risk of metering inaccuracies due to pump wear or malfunction. Its excellent media adaptability and stable volumetric efficiency ensure that even with slight fluctuations in slurry process parameters, the pump's volumetric output remains highly consistent, further improving the accuracy and comparability of quantitative sampling results. The use of this mature and efficient positive displacement pump type, the gear pump, also allows the entire sampling module to maintain high performance while balancing manufacturing costs and ease of maintenance.

[0025] In some embodiments, the electrode slurry sampling device further includes a control module, and a metering pump and a three-way valve are electrically connected to the control module.

[0026] In the above embodiments, the control module is electrically connected to the metering pump and the three-way valve, eliminating the need for manual operation of the metering pump and the switching of the three-way valve's state. This achieves automated control of the sampling process, avoiding the inefficiency caused by manual operation and reducing the safety risks of operators coming into contact with corrosive slurries. The control module can precisely set the operating time or revolutions of the metering pump, significantly improving the accuracy and consistency of the sampling volume compared to manual judgment, ensuring the reliability of subsequent slurry testing data. Furthermore, the control module's program can be flexibly adjusted to adapt to the sampling requirements of different slurry specifications without requiring modifications to the device structure, enhancing the device's versatility. The coordinated operation of the metering pump and the three-way valve through the control module ensures the orderly connection of slurry circulation, sampling, and reset processes, making the entire sampling process more coherent and stable, further adapting to the continuous operation requirements of automated production lines.

[0027] In some embodiments, the bottom of the support module is provided with casters.

[0028] In the above embodiments, the casters at the bottom of the support module provide the entire device with flexible mobility. Compared with fixed sampling equipment, the sampling position of the device can be quickly adjusted according to the distribution of slurry storage tanks in the workshop, changes in production line layout, and other needs, adapting to different production scenarios and improving the versatility of the equipment and the flexibility of workshop layout.

[0029] In some embodiments, the electrode slurry sampling device further includes a pressure detection component disposed on the sample inlet line and located between the three-way valve and the metering pump.

[0030] In the above embodiments, the pressure detection component is installed on the sample inlet pipeline, located between the three-way valve and the metering pump. It can monitor the slurry pressure between the output of the metering pump and the three-way valve in real time, providing accurate data feedback on the pipeline's operating status. When abnormal conditions such as blockage or leakage occur in the pipeline, the pressure value will deviate from the preset normal range. The control module can promptly detect this abnormal signal, triggering an alarm or shutdown protection to prevent damage to core components such as the metering pump and three-way valve due to excessive pressure, or inaccurate sampling due to insufficient pressure, thus ensuring the safety and stability of the device operation. Simultaneously, the real-time monitoring data from the pressure detection component can assist the control module in precisely adjusting the operating parameters of the metering pump, ensuring stable slurry delivery pressure, further improving the accuracy of quantitative sampling, and adapting to the stringent requirements for pressure stability in slurry sampling. This significantly enhances the reliability and controllability of the entire sampling process. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of an electrode slurry sampling device according to one embodiment.

[0032] Figure 2 for Figure 1 A schematic diagram of the sampling module.

[0033] Figure 3 for Figure 1 A schematic diagram of part of the structure of the middle electrode slurry sampling device.

[0034] Figure 4 for Figure 1 A schematic diagram showing the connection relationship between the waste liquid collection module, the support platform, and the sampling container.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Support module; 110. Support plate; 120. Profile assembly; 121. Vertical profile; 122. Horizontal profile; 130. Casters; 140. Support feet;

[0037] 200. Sampling module; 210. Injection line; 220. Metering pump; 230. Three-way valve; 240. Circulation line; 250. Discharge connector; 260. Pressure detection component;

[0038] 300. Supporting platform; 310. Sampling container; 320. Limiting part;

[0039] 410. Cleaning head; 420. High-pressure cleaning mechanism; 421. Cleaning water tank;

[0040] 510. Waste liquid collection hopper; 520. Waste liquid collection pipe; 530. Waste liquid collection container; 540. Drive mechanism; 550. Weight detection component;

[0041] 600. Control module. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0048] As mentioned in the background section, slurry sampling is currently predominantly done manually. Operators must manually operate valves on slurry storage tanks, collect the flowing slurry using beakers or other containers, and periodically close the valves. Manual sampling carries high safety risks, poor sample consistency, and low efficiency. Specifically, manual sampling may involve contact with corrosive or toxic slurry components, posing a high safety risk; the sample volume is affected by the operator's experience, technique, and timeliness, leading to poor sample consistency; and manual sampling is inefficient and cannot meet the rapid, continuous quality monitoring requirements of automated production lines.

[0049] To improve automation, several improved sampling devices have emerged in related technologies. For example, one approach uses a fixed weighing tank with valve control, indirectly controlling the sampling volume by monitoring changes in the tank's total weight. This approach struggles to conveniently and directly control the volume of slurry discharged in a single batch, its accuracy is easily affected by system tare weight and sensor zero-point drift, and cleaning is often incomplete, with residual slurry leading to cross-contamination of samples. Another approach integrates complex multi-valve groups and bypasses into the main pipeline, estimating flow rate through timing or valve switching. This type of system is structurally complex, with cleaning dead zones easily forming at valve-to-pipe connections, and is mostly fixed in installation, lacking flexibility and making it difficult to adapt to modern smart workshops requiring mobile deployment and collaboration with mobile robots in flexible production lines. Furthermore, sampling solutions in related technologies generally lack efficient and reliable automatic cleaning functions. After sampling, slurry easily remains at the discharge port, drying and solidifying, which not only causes pipeline blockage and affects subsequent sampling accuracy but also leads to cross-contamination between different batches of samples, severely impacting the accuracy of test results. Regular manual disassembly and cleaning introduces operational burdens and safety risks.

[0050] Considering the above problems, this application provides an electrode slurry sampling device. When the three-way valve 230 is in its second state, the slurry can circulate between the storage tank, the inlet pipe 210, the three-way valve 230, and the circulation pipe 240, effectively preventing solidification and deposition of the slurry while it remains in the pipes, ensuring unobstructed flow and stable slurry performance. When the three-way valve 230 is switched to its first state, the inlet is connected to the outlet, allowing the slurry to be discharged through the outlet without manual valve operation, avoiding the risk of operators directly contacting corrosive slurry. Simultaneously, combined with the precise control of the metering pump 220, automatic quantitative sampling is achieved, solving the problems of poor consistency and low efficiency in traditional manual sampling, and improving the accuracy and efficiency of slurry detection during battery production.

[0051] Figure 1 This is a schematic diagram of the structure of an electrode slurry sampling device according to one embodiment. Figure 2 for Figure 1 A schematic diagram of the sampling module. Figure 3 for Figure 1 A schematic diagram of part of the structure of the middle electrode slurry sampling device. Figure 4 for Figure 1 A schematic diagram showing the connection relationship between the waste liquid collection module, the support platform, and the sampling container.

[0052] See Figure 1 and Figure 2 One embodiment of this application provides an electrode slurry sampling device, which includes a support module 100 and a sampling module 200 disposed on the support module 100. The sampling module 200 includes: an inlet pipeline 210, a metering pump 220, a three-way valve 230, and a circulation pipeline 240.

[0053] The inlet end of the sample inlet line 210 is connected to the slurry storage tank. A metering pump 220 is installed on the sample inlet line 210. A three-way valve 230 is installed at the outlet end of the sample inlet line 210. The three-way valve 230 has an inlet, a circulation port, and a discharge port, with the inlet connected to the outlet end of the sample inlet line. The inlet end of the circulation line 240 is connected to the circulation port, and the outlet end of the circulation line 240 is connected to the slurry storage tank. The three-way valve 230 is configured to switch between a first state and a second state: in the first state, the inlet is connected to the discharge port, and in the second state, the inlet is connected to the circulation port.

[0054] The support module 100 serves as the mounting base for the entire device, providing stable load-bearing support for the sampling module 200. (See also...) Figure 3 Optionally, the support module 100 includes a support plate 110 and a profile assembly 120, with the profile assembly 120 fixed to the support plate 110. The profile assembly 120 includes a plurality of parallel vertical profiles 121, with adjacent vertical profiles 121 fixedly connected by horizontal profiles 122.

[0055] The slurry storage tank is used to store the electrode slurry. The injection line 210 can be made of corrosion-resistant rigid metal tubing such as stainless steel. The injection line 210 can be fixedly connected to the profile assembly 120 via clamps or other connectors.

[0056] The fixed displacement pump 220 can maintain a constant flow rate independent of the discharge pressure and the flow rate can be infinitely adjusted. Using the fixed displacement pump 220, the functions of conveying, metering, and regulating can be simultaneously satisfied. The fixed displacement pump 220 can be fixed to the support plate 110 or the profile assembly 120. The fixed displacement pump 220 can be a gear pump or other type of positive displacement pump with stable flow output characteristics.

[0057] The three-way valve 230 can be an electrically controlled three-way ball valve. The three-way valve 230 can be fixed to the profile assembly 120 via adapters such as connecting plates.

[0058] When the three-way valve 230 is in the first state, the slurry storage tank, the sampling pipeline 210, the metering pump 220, the inlet of the three-way valve 230 and the discharge port are connected to each other, while the inlet of the three-way valve 230 and the circulation port are not connected. Thus, driven by the metering pump 220, the slurry in the slurry storage tank can be discharged through the discharge port to achieve automatic sampling. Sampling can be performed at the discharge port using a sampling container.

[0059] When the three-way valve 230 is in the second state, the slurry storage tank, the sample inlet pipe 210, the metering pump 220, the inlet of the three-way valve 230 and the circulation port, and the circulation pipe 240 are connected to each other, while the inlet of the three-way valve 230 and the discharge port are not connected. Thus, driven by the metering pump 220, the slurry in the slurry storage tank can flow through the sample inlet pipe 210 and the circulation pipe 240 and then return to the slurry storage tank, realizing the circulation of the slurry.

[0060] The aforementioned electrode slurry sampling device includes a support module 100 that provides a stable mounting platform for all components of the sampling module 200, ensuring the structural stability of the entire sampling system during operation and guaranteeing the stability of subsequent slurry delivery and sampling. The inlet end of the inlet pipe 210 is connected to the slurry storage tank, establishing a slurry delivery channel from the storage tank to the sampling module 200, allowing the slurry to smoothly enter the sampling process. A quantitative pump 220 is installed on the inlet pipe 210, enabling precise control of the slurry delivery flow rate, avoiding the problem of unstable flow rate during manual sampling, and providing assurance for quantitative sampling. The three-way valve 230 is located at the outlet of the inlet pipe 210, with its inlet connected to the inlet pipe 210. Its circulation port is connected to the circulation pipe 240, and the outlet of the circulation pipe 240 is connected to the slurry storage tank. This allows the slurry to circulate among the storage tank, inlet pipe 210, three-way valve 230, and circulation pipe 240 when the three-way valve 230 is in its second state. This effectively prevents the slurry from solidifying and depositing while remaining in the pipes, ensuring unobstructed flow and stable slurry performance. When the three-way valve 230 is switched to its first state, its inlet is connected to the discharge port, allowing the slurry to be discharged without manual valve operation. This eliminates the risk of operators directly contacting corrosive slurry. Combined with the precise control of the metering pump 220, automatic quantitative sampling is achieved, solving the problems of poor consistency and low efficiency associated with traditional manual sampling. This improves the accuracy and efficiency of slurry testing during battery production.

[0061] See Figure 1 and Figure 3 as well as Figure 4 In some embodiments, the electrode slurry sampling device further includes a support platform 300, which is disposed on the support module 100 and located below the discharge port. The support platform 300 is used to support the sampling container 310.

[0062] Optionally, the support platform 300 can be a sheet metal structure, fastened to the profile assembly 120 of the support module 100 with fasteners. Its installation height can be designed in conjunction with the working height of the composite robot to meet the needs of automated sampling container 310. The sampling container 310 can be a commonly used laboratory container such as a beaker. After being placed in the preset area of ​​the support platform 300, it can receive a quantitative amount of slurry discharged during the sampling process.

[0063] In the above embodiments, the support platform 300 is mounted on the support module 100, providing a stable support foundation for the sampling container 310. The support platform 300 is located below the discharge port, allowing the slurry discharged from the discharge port to fall vertically into the sampling container 310, reducing slurry splashing and spillage. This ensures the accuracy of the sample volume while avoiding slurry waste and environmental pollution. Simultaneously, the presence of the support platform 300 ensures a relatively fixed placement of the sampling container 310, eliminating the need for manual handling of the container to receive the slurry. This further reduces the risk of operators coming into contact with corrosive slurry. Combined with the automatic discharge function of the sampling module 200, the entire sampling process better meets the needs of automated production, improving the convenience and safety of the sampling operation.

[0064] See Figure 1 and Figure 3 as well as Figure 4 In some embodiments, a limiting part 320 is provided on the carrying platform 300, the limiting part 320 defining a limiting space for accommodating the sampling container 310.

[0065] Optionally, the limiting part 320 may adopt a ring-shaped edge protection structure. Optionally, the limiting part 320 may be integrally formed in the preset bearing area of ​​the bearing platform 300, forming a limiting space that adapts to the shape of the sampling container 310. Its size is designed according to the specifications of commonly used sampling containers 310 to ensure that the sampling container 310 can fit tightly against the limiting part 320 after being placed. The height of the limiting part 320 is lower than the height of the sampling container 310, which does not affect the smooth falling of the slurry into the container, and also plays a stable limiting role.

[0066] In the above embodiments, the limiting part 320 on the support platform 300 defines a dedicated limiting space. After the sampling container 310 is placed in this space, it can be effectively fixed in position, avoiding displacement of the sampling container 310 caused by factors such as equipment vibration and robot collisions during sampling. This ensures that the slurry discharged from the discharge port always falls accurately into the container, guaranteeing the integrity and accuracy of the sample volume. The edge protection structure of the limiting part 320 can prevent the sampling container 310 from tipping over, especially for corrosive lithium battery slurries, preventing slurry leakage, personnel injury, and environmental pollution caused by container tipping. At the same time, the limiting space provides a clear placement position for the sampling container 310, improving the accuracy and efficiency of the composite robot's automatic container handling, reducing operational delays caused by positioning deviations, further adapting to the needs of fully automated sampling and testing, and significantly improving the stability and reliability of the entire sampling process.

[0067] See Figure 1 and Figure 3In some embodiments, the sampling module 200 further includes a discharge connector 250 connected to the discharge port. The electrode slurry sampling device also includes a cleaning module disposed on the support module 100. The cleaning module includes a cleaning head 410 and a high-pressure cleaning mechanism 420 connected to the cleaning head 410. The cleaning head 410 is provided with multiple nozzles, and the spray direction of the nozzles is from the outlet end of the discharge connector 250 toward its inner wall. The high-pressure cleaning mechanism 420 is used to provide cleaning fluid to the cleaning head 410.

[0068] The cleaning head 410 can be fixed to the discharge connector 250, or it can be fixed to the profile assembly 120 of the support module via an adapter. The discharge connector 250 can be made of corrosion-resistant stainless steel and can be fixed to the discharge port of the three-way valve 230 by means of threaded connection or other methods. The high-pressure cleaning mechanism 420 can be installed on the support plate 110 of the support module.

[0069] In the above embodiment, the discharge connector 250 is connected to the discharge port, providing a stable channel for slurry discharge and preventing splashing or flow deviation when slurry is discharged directly from the discharge port, ensuring that the slurry falls accurately into the sampling container 310. The nozzle can be positioned so that the nozzle spray direction of the cleaning head 410 is towards the inner wall of the discharge connector 250. Combined with the high-pressure cleaning fluid provided by the high-pressure cleaning mechanism 420, it can directly rinse the inner wall of the discharge connector 250, providing targeted cleaning and effectively removing residual slurry after sampling. The high-pressure cleaning mechanism 420 delivers the cleaning fluid through pressurization, giving the cleaning fluid sprayed from the nozzle sufficient impact force to quickly peel off stubbornly attached slurry residue. This built-in cleaning function eliminates the need for manual disassembly and cleaning, avoiding operator contact with residual corrosive slurry, reducing operational risks, and ensuring the cleanliness of the discharge connector 250's interior. This prevents residual slurry from solidifying and clogging the pipeline or contaminating the slurry for the next sampling, ensuring the accuracy of sampling and testing results and the long-term stable operation of the equipment.

[0070] See Figure 1 and Figure 3 In some embodiments, the high-pressure cleaning mechanism 420 includes a cleaning water tank 421, a pneumatic drive unit, and a cleaning control valve. The pneumatic drive unit is used to introduce compressed air into the cleaning water tank 421 to pressurize and output the cleaning fluid in the tank. The cleaning control valve is located on the pipeline connecting the cleaning water tank 421 and the cleaning head 410, and is used to control the spraying mode of the cleaning fluid, such as spraying in a pulse mode.

[0071] Optionally, the cleaning water tank 421 can be fixed to the support module 100 by a bracket, and is used to store the clean water required for cleaning. The pneumatic drive unit may include an air pump, air pipe, and pressure regulating valve. The air pump is fixed to the support plate 110 of the support module 100 and is sealed to the cleaning water tank 421 through the air pipe. The pressure regulating valve can precisely adjust the pressure of the compressed air entering the water tank, thereby controlling the output pressure of the cleaning fluid. The cleaning control valve is an electromagnetic control valve, installed on the high-pressure water pipe connecting the cleaning water tank 421 and the cleaning head 410, and electrically connected to the control module 600. It can control the on / off state and spray mode of the cleaning fluid according to a preset program.

[0072] In this embodiment, a pulse mode can be selected, which enhances the cleaning impact through intermittent spraying. During cleaning, the pneumatic drive unit introduces compressed air into the cleaning water tank 421, which pressurizes the cleaning fluid in the tank under the action of air pressure. The fluid is then transported to the cleaning control valve through a high-pressure water pipe. The cleaning control valve controls the output to the cleaning head 410 in pulse mode, and then sprays it onto the inner wall of the discharge connector 250 through the nozzle to complete the cleaning.

[0073] In the above embodiments, the cleaning water tank 421 of the high-pressure cleaning mechanism 420 provides a stable storage space for cleaning fluid during the cleaning process, ensuring that frequent replenishment of liquid is not required during cleaning and improving the continuity of cleaning operations. The pneumatic drive unit pressurizes the cleaning fluid output by introducing compressed air into the cleaning water tank 421, which can significantly increase the spray pressure of the cleaning fluid and enhance the peeling ability of residual slurry on the inner wall of the discharge connector 250, thus achieving a more thorough cleaning. The cleaning control valve is located on the pipeline between the cleaning water tank 421 and the cleaning head 410, which can not only accurately control the flow of cleaning fluid and avoid waste of cleaning fluid during the cleaning process, but also supports pulse mode spraying, which can further improve cleaning efficiency through intermittent impact, reduce cleaning fluid consumption, and reduce the risk of residual slurry solidifying and clogging the discharge connector 250.

[0074] In some embodiments, the cleaning head 410 is fitted onto the outlet end of the discharge connector 250. Multiple nozzles are arranged around the central axis of the discharge connector 250.

[0075] Optionally, the cleaning head 410 adopts a ring structure and can be tightly fitted onto the outside of the outlet end of the sample outlet connector 250 by means of snap-fit ​​or interference fit, ensuring that the cleaning head 410 is stable and does not shift during the cleaning process. The nozzles can be conical nozzles, evenly arranged around the central axis of the sample outlet connector 250 to form a ring-shaped cleaning area. During cleaning, the cleaning fluid delivered by the high-pressure cleaning mechanism 420 is distributed to each nozzle through the cleaning head 410 and sprayed synchronously onto the inner wall of the sample outlet connector 250 to achieve all-round rinsing.

[0076] In the above embodiment, the cleaning head 410 is fitted onto the outlet end of the sampling connector 250, allowing the nozzle to be aligned closely with the inner wall of the sampling connector 250. This reduces pressure loss during the cleaning fluid delivery process, ensuring the cleaning fluid acts on the residual slurry with sufficient impact force, thus improving the cleaning effect. Multiple nozzles are evenly arranged around the central axis of the sampling connector 250, forming a ring-shaped cleaning area that ensures 360° coverage of the inner wall of the sampling connector 250, effectively removing stubborn residual slurry. This multi-nozzle layout, combined with high-pressure jetting, not only improves cleaning efficiency and shortens cleaning time but also avoids the risk of residual slurry solidifying and clogging the sampling connector 250, ensuring smooth subsequent sampling and the purity of the slurry sample, further enhancing the automated operational stability of the entire sampling device.

[0077] See Figure 1 , Figure 3 as well as Figure 4 In some embodiments, the electrode slurry sampling device further includes a waste liquid collection module disposed on the support module 100. The waste liquid collection module includes a waste liquid collection hopper 510, a waste liquid collection pipe 520, and a waste liquid collection container 530. The collection port of the waste liquid collection hopper 510 faces the discharge connector 250. One end of the waste liquid collection pipe 520 is connected to the waste liquid collection hopper 510, and the inner diameter of the waste liquid collection pipe 520 is smaller than the diameter of the collection port. The other end of the waste liquid collection pipe 520 is connected to the waste liquid collection container 530.

[0078] Optionally, the waste liquid collection hopper 510 is made of corrosion-resistant plastic, and its collection port size is designed according to the outlet range of the discharge connector 250 to ensure that it can fully collect the waste liquid generated after the cleaning module rinses the discharge connector 250. The waste liquid collection pipe 520 can be made of corrosion-resistant metal rigid pipe such as stainless steel pipe, with one end sealed and fixed to the outlet of the waste liquid collection hopper 510, and the other end extending into the waste liquid collection container 530. The waste liquid collection container 530 can be placed on the support plate 110 of the support module 100.

[0079] In the above embodiment, the waste liquid collection hopper 510 of the waste liquid collection module faces the discharge connector 250, which can collect the waste liquid generated when the cleaning module rinses the discharge connector 250, preventing waste liquid from splashing onto the support platform 300 or the ground, and preventing corrosive waste liquid from polluting the operating environment, damaging equipment, or causing safety hazards to operators. One end of the waste liquid collection pipe 520 is connected to the waste liquid collection hopper 510, and the other end is connected to the waste liquid collection container 530, reducing the evaporation and leakage of waste liquid during the transmission process and ensuring the cleanliness and safety of the operating environment. The inner diameter of the waste liquid collection pipe 520 is smaller than the diameter of the collection port of the waste liquid collection hopper 510, so that the waste liquid can be quickly guided through the waste liquid collection pipe 520 after it gathers in the waste liquid collection hopper 510. This centralized waste liquid collection design not only simplifies the subsequent waste liquid treatment process and reduces environmental protection treatment costs, but also further improves the automated supporting functions of the sampling device, making the entire sampling, cleaning, and waste liquid treatment process a closed loop, and improving the practicality and environmental friendliness of the device.

[0080] See Figure 1 , Figure 3 as well as Figure 4 In some embodiments, the waste liquid collection module further includes a drive mechanism 540, which is disposed on the support module 100 and is connected to the waste liquid collection pipe 520 in a driving manner.

[0081] The support platform 300 is provided with a clearance opening. The drive mechanism 540 is used to drive the waste liquid collection pipe 520 to drive the waste liquid collection hopper 510 through the clearance opening, so that the waste liquid collection hopper 510 can be located on the side of the support platform 300 that is close to or far from the discharge connector 250.

[0082] The drive mechanism 540 can be a cylinder-driven assembly, which is fixedly mounted on the profile assembly 120 of the support module 100 via a bracket. Its output end can be fixedly connected to the waste liquid collection pipe 520 via adapters such as clamp assemblies. The size of the clearance opening on the support platform 300 is slightly larger than the maximum outer diameter of the waste liquid collection hopper 510 to ensure that the waste liquid collection hopper 510 can pass through smoothly. The drive mechanism 540 is electrically connected to the control module 600 and can automatically switch working states according to the sampling or cleaning workflow: when sampling is required, the drive mechanism 540 drives the waste liquid collection pipe 520 to move the waste liquid collection hopper 510 through the clearance opening to the storage position below the support platform 300, making room for the sampling container 310; when sampling is completed and cleaning is required, the drive mechanism 540 reverses its drive, pushing the waste liquid collection hopper 510 to the cleaning work position above the support platform 300, so that its collection port is accurately aligned with the discharge connector 250.

[0083] In the above embodiment, the drive mechanism 540 is mounted on the support module 100 and connected to the waste liquid collection pipe 520. Combined with the clearance opening on the support platform 300, it enables flexible switching between the waste liquid collection hopper 510 and the cleaning work position. During sampling, the waste liquid collection hopper 510 moves below the support platform 300, avoiding interference with the placement of the sampling container 310 and the sampling process. This ensures that the sampling container 310 can be smoothly placed within the confined space to receive the slurry, guaranteeing the smoothness of the sampling process. During cleaning, the drive mechanism 540 pushes the waste liquid collection hopper 510 above the support platform 300, ensuring its collection port accurately faces the discharge connector 250, allowing for comprehensive collection of rinsing waste liquid and preventing leakage and environmental pollution. This switchable design allows for seamless integration of the sampling and cleaning processes, eliminating the need for manual adjustment of the waste liquid collection hopper 510. This further enhances the automation level of the device, reduces manual intervention, and ensures the effectiveness of both sampling and cleaning, making the entire device more efficient and intelligent.

[0084] In other embodiments, the support platform 300 may not have an avoidance opening. For example, the waste liquid collection hopper 510 is mounted on the profile assembly 120 of the support module 100 and can be switched between a first position and a second position. When sampling with the sampling container 310, the waste liquid collection hopper 510 is fixed in the first position on the support module 100, avoiding the sampling container 310, so as not to affect the sampling of the sampling container 310. During cleaning, the sampling container 310 is removed from the support platform 300, and the waste liquid collection hopper 510 can be fixed in the second position. At this time, the collection port of the waste liquid collection hopper 510 is located below the outlet end of the discharge connector 250, and the waste liquid collection pipe 520 is inserted into the waste liquid collection bucket to receive the cleaning waste liquid. The waste liquid collection pipe 520 is bent to avoid the support platform 300.

[0085] See Figure 3 and Figure 4 In some embodiments, the inner diameter of the waste liquid collection hopper 510 gradually decreases from the direction of the collection port of the waste liquid collection hopper 510 to the direction of the outlet of the waste liquid collection hopper 510.

[0086] In the above embodiments, the conical structure of the waste liquid collection hopper 510, with its inner diameter gradually decreasing from the collection port to the outlet, guides the rinsing waste liquid to converge quickly, preventing waste liquid from stagnating inside the waste liquid collection hopper 510. This reduces the probability of residual slurry adhering to the inner wall of the waste liquid collection hopper 510, thus lowering the cleaning difficulty. The larger collection port ensures complete coverage of the area below the discharge connector 250, efficiently collecting all rinsing waste liquid and preventing splashing and leakage that could cause environmental pollution or equipment corrosion. The gradually narrowing inner diameter design allows the waste liquid to gradually increase its flow rate during flow, improving waste liquid transportation efficiency.

[0087] See Figure 4In some embodiments, the waste liquid collection module further includes a weight detection component 550 for detecting the weight of the waste liquid collection container 530.

[0088] The weight detection component 550 can be a high-precision gravity sensor, pressure sensor, etc., and can be fixedly installed on the support plate 110 of the support module 100 by a bracket. The detection surface of the weight detection component 550 can be attached to the bottom of the waste liquid collection container 530 or indirectly support the waste liquid collection container 530.

[0089] In the above embodiments, the weight detection component 550 detects the weight of the waste liquid collection container 530, providing real-time feedback on the amount of waste liquid stored in the container. This avoids the tedious manual operation of periodically checking the waste liquid level, saving labor costs. Simultaneously, real-time weight monitoring allows operators to rationally schedule waste liquid treatment time, eliminating the need for frequent checks or premature treatment of unfilled containers, thus improving work efficiency and ensuring the continuous and stable operation of the entire sampling device. This further refines the automated waste liquid treatment process, making the device more convenient and safer to use.

[0090] In some embodiments, the waste liquid collection module further includes an alarm unit, which issues an alarm signal when the weight value detected by the weight detection component 550 reaches a preset threshold.

[0091] The weight detection component 550 can be electrically connected to the control module 600. The alarm unit can also be electrically connected to the control module 600. The alarm unit can be an audible and visual alarm, fixedly mounted on the profile assembly 120 of the support module 100 via a bracket. The control module 600 pre-stores a preset threshold for the full weight of the waste liquid collection container 530. During device operation, the weight detection component 550 collects the weight data of the waste liquid collection container 530 in real time and transmits it to the control module 600. The control module 600 continuously compares the real-time weight value with the preset threshold. When waste liquid continuously accumulates in the waste liquid collection container 530, and the weight value detected by the weight detection component 550 reaches the preset threshold, the control module 600 immediately sends a trigger signal to the alarm unit, which then issues a continuous alarm signal.

[0092] In the above embodiments, the alarm unit works in conjunction with the weight detection component 550 and the control module 600. The weight detection component 550 provides real-time feedback on the weight status of the waste liquid collection container 530. When the weight reaches a preset threshold, the alarm unit promptly issues an alarm signal, which can quickly remind the operator to handle the overflowing waste liquid, avoid the overflow of the collection container due to excessive waste liquid not being handled in time, prevent the leakage of corrosive waste liquid from polluting the operating environment and corroding the equipment, and also avoid the safety risks caused by waste liquid contact with the human body.

[0093] See Figure 1In some embodiments, the electrode slurry sampling device further includes a control module 600, and a metering pump 220 and a three-way valve 230 are electrically connected to the control module 600.

[0094] The control module 600 can be fixed to the profile assembly 120 of the support module 100. The control module 600 can be a programmable logic controller (PLC) or similar device. The control module 600 pre-stores the control program for the sampling process, including the running time and rotation speed parameters of the metering pump 220, and the switching sequence of the three-way valve 230 between the first and second states. The operator can send sampling commands to the control module 600 through an external terminal. After receiving the command, the control module 600 sends control signals to the metering pump 220 and the three-way valve 230 according to the preset program, driving them to work together to complete operations such as automatic cycling, quantitative sampling, and switching reset.

[0095] In the above embodiments, the control module 600 is electrically connected to the metering pump 220 and the three-way valve 230, enabling the automatic control of the sampling process by eliminating the need for manual operation of the metering pump 220 and the switching of the three-way valve 230. This avoids the inefficiency caused by manual operation and reduces the safety risks of operators coming into contact with corrosive slurries. The control module 600 can precisely set the running time or revolutions of the metering pump 220, significantly improving the accuracy and consistency of the sampling volume compared to manual judgment, thus ensuring the reliability of subsequent slurry testing data. Furthermore, the program of the control module 600 can be flexibly adjusted to adapt to the sampling requirements of different slurry specifications without requiring modifications to the device structure, enhancing the device's versatility. The coordinated operation of the metering pump 220 and the three-way valve 230 through the control module 600 ensures the orderly connection of slurry circulation, sampling, and reset processes, making the entire sampling process more coherent and stable, further adapting to the continuous operation requirements of automated production lines.

[0096] See Figure 1 and Figure 3 In some embodiments, the bottom of the support module 100 is provided with casters 130.

[0097] The casters 130 can be made of polyurethane, which has the characteristics of being non-slip, wear-resistant, and having a strong load-bearing capacity. Four casters 130 can be installed, evenly distributed at the four corners of the bottom of the support plate 110 of the support module 100.

[0098] In the above embodiments, the movable wheels 130 at the bottom of the support module 100 provide the entire device with flexible mobility. Compared with fixed sampling equipment, the sampling position of the device can be quickly adjusted according to the distribution of slurry storage tanks in the workshop, changes in production line layout, and other needs, adapting to different production scenarios and improving the versatility of the equipment and the flexibility of workshop layout.

[0099] In some embodiments, at least two of the casters 130 are equipped with brake locking. The bottom of the support module 100 is also provided with manually adjustable support feet 140.

[0100] Optionally, the bottom of the support module 100 is provided with four movable wheels 130, all made of polyurethane, evenly distributed at the four corners of the support plate 110, with the two diagonally positioned movable wheels 130 having a brake locking function. The support feet 140 adopt a screw-type structure, with a total of four, and are installed on the bottom of the support plate 110 corresponding to the inner positions of the movable wheels 130.

[0101] In the above embodiments, at least two of the moving wheels 130 are equipped with a brake locking function. After the device moves to the designated position, the moving wheels 130 can be quickly locked to prevent displacement of the device due to external forces or its own operational vibration during sampling. This ensures the relative position of the discharge port and the sampling container 310 is stable, guaranteeing the accuracy of the sampling volume. The support feet 140 at the bottom of the support module 100 can be manually adjusted in height to flexibly compensate for unevenness in the workshop floor, keeping the device level and stable. This avoids problems such as slurry splashing and tipping of the sampling container 310 caused by ground tilting. At the same time, it provides a stable operating environment for precision components such as the metering pump 220 and the pressure detection component 260, reducing the impact of vibration on detection accuracy and equipment lifespan. The brake locking function, in conjunction with the adjustable support feet 140, retains the device's mobility while greatly improving its stability during operation. This allows the device to adapt to workshop environments with different floor conditions, further enhancing the device's practicality and industrial adaptability.

[0102] In some embodiments, the electrode slurry sampling device further includes a first flexible hose, through which the sample inlet line 210 is connected to the slurry storage tank. The electrode slurry sampling device also includes a second flexible hose, through which the circulation line 240 is connected to the slurry storage tank.

[0103] The first flexible hose is made of a chemically resistant material. The second flexible hose is also made of a chemically resistant material.

[0104] Optionally, both the first and second flexible hoses are made of chemically resistant fluororubber, possessing excellent resistance to slurry corrosion and flexibility, adaptable to connection requirements at different installation angles and positions. One end of the first flexible hose is sealed to the outlet of the slurry storage tank via a clamp, and the other end is connected to the inlet of the sample inlet pipe 210; one end of the second flexible hose is fixed to the return port of the slurry storage tank via a sealed connection, and the other end is connected to the outlet of the circulation pipe 240.

[0105] In the above embodiments, the first flexible hose connects the sample inlet line 210 to the slurry storage tank, and the second flexible hose connects the circulation line 240 to the slurry storage tank. The flexible material properties allow for precise alignment of the sample inlet and circulation lines with the slurry storage tank without requiring strict alignment of installation positions and angles, significantly improving the device's adaptability within the workshop. Both flexible hoses are made of chemically resistant materials, effectively resisting the corrosiveness of the slurry and preventing aging and leakage due to prolonged contact with the slurry, thus ensuring the safety and sealing of the sampling and circulation processes. Simultaneously, the rigid pipe structure of the sample inlet line 210 and the circulation line 240 provides a stable installation foundation for core components such as the metering pump 220 and the three-way valve 230, ensuring the structural stability of the equipment during operation.

[0106] In some embodiments, the metering pump is a gear pump.

[0107] In the above embodiments, the metering pump 220 is specifically defined as a gear pump. Utilizing the structural feature of the internal meshing gears forming a fixed-volume chamber with the pump body, the volume of slurry discharged per revolution has extremely high repeatability and certainty. This provides a stable and reliable hardware foundation for the metering core of the entire sampling device. The gear pump has a robust and simple structure with few moving parts. When conveying media with specific viscosities, such as electrode slurries, and potentially containing fine solid particles, it exhibits good reliability and durability, reducing the risk of metering inaccuracies due to pump wear or malfunction. Its excellent media adaptability and stable volumetric efficiency ensure that even with slight fluctuations in slurry process parameters, the pump's volume output remains highly consistent, further improving the accuracy and comparability of quantitative sampling results. The use of the mature and efficient gear pump also allows the entire sampling module 200 to maintain high performance while balancing manufacturing costs and ease of maintenance.

[0108] See Figure 1 In some embodiments, the electrode slurry sampling device further includes a pressure detection component 260, which is disposed on the sample inlet pipeline 210 and located between the three-way valve 230 and the metering pump 220.

[0109] Optionally, the pressure detection component 260 can be a high-precision industrial pressure sensor, which is fixedly installed on the sample inlet pipeline 210 via a threaded connection. Its installation position is precisely located between the three-way valve 230 and the metering pump 220, and it is connected to the pipeline interior to sense the slurry pressure in real time. The pressure detection component 260 is electrically connected to the control module 600, and can convert the collected pressure signal into an electrical signal in real time and transmit it to the control module 600. The control module 600 has a pre-set threshold for the normal pressure range of slurry delivery. This threshold is determined based on the characteristics of the lithium battery slurry, the rated parameters of the metering pump 220, and the pipeline design specifications, and is used to determine whether the pipeline operation is normal.

[0110] In the above embodiments, the pressure detection component 260 is installed on the sample inlet pipeline 210 and located between the three-way valve 230 and the metering pump 220. It can monitor the slurry pressure between the output end of the metering pump 220 and the three-way valve 230 in real time, providing accurate data feedback on the pipeline operation status. When abnormal conditions such as blockage or leakage occur in the pipeline, the pressure value will deviate from the preset normal range. The control module 600 can promptly capture this abnormal signal, thereby triggering an alarm or shutdown protection to prevent damage to core components such as the metering pump 220 and the three-way valve 230 due to excessive pressure, or inaccurate sampling due to excessively low pressure, thus ensuring the safety and stability of the device operation. At the same time, the real-time monitoring data of the pressure detection component 260 can assist the control module 600 in accurately adjusting the operating parameters of the metering pump 220 to ensure stable slurry delivery pressure, further improving the accuracy of quantitative sampling, adapting to the stringent requirements of slurry sampling for pressure stability, and significantly enhancing the reliability and controllability of the entire sampling process.

[0111] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electrode slurry sampling device, characterized in that, It includes a support module and a sampling module disposed on the support module, the sampling module comprising: The sample inlet pipeline is connected to the slurry storage tank at its inlet end; A metering pump is installed on the sample inlet line; A three-way valve is installed at the outlet end of the sample inlet pipeline. The three-way valve has an inlet, a circulation port, and a discharge port. The inlet is connected to the outlet end of the sample inlet pipeline. A circulation pipeline, wherein the inlet end of the circulation pipeline is connected to the circulation port, and the outlet end of the circulation pipeline is connected to the slurry storage tank; The three-way valve is configured to switch between a first state and a second state. In the first state, the inlet is connected to the discharge port, and in the second state, the inlet is connected to the circulation port.

2. The electrode slurry sampling device according to claim 1, characterized in that, It also includes a support platform, which is disposed on the support module and located below the sampling port, and the support platform is used to support the sampling container.

3. The electrode slurry sampling device according to claim 2, characterized in that, The carrying platform is provided with a limiting part, which defines a limiting space for accommodating the sampling container.

4. The electrode slurry sampling device according to claim 2, characterized in that, The sampling module further includes a discharge connector connected to the discharge port; the electrode slurry sampling device further includes a cleaning module disposed on the support module, the cleaning module comprising: A cleaning head, wherein the cleaning head is provided with multiple nozzles, the nozzles spraying in a direction from the outlet end of the discharge connector toward its inner wall; and A high-pressure cleaning mechanism connected to the cleaning head, the high-pressure cleaning mechanism being used to provide cleaning fluid to the cleaning head.

5. The electrode slurry sampling device according to claim 4, characterized in that, The cleaning head is fitted onto the outlet end of the sample dispensing connector; the plurality of nozzles are arranged around the central axis of the sample dispensing connector.

6. The electrode slurry sampling device according to claim 4, characterized in that, It also includes a waste liquid collection module disposed on the support module, the waste liquid collection module comprising: Waste liquid collection hopper, wherein the collection port of the waste liquid collection hopper faces the discharge connector; A waste liquid collection pipe, one end of which is connected to the waste liquid collection hopper, wherein the inner diameter of the waste liquid collection pipe is smaller than the diameter of the collection port; and A waste liquid collection container, wherein the other end of the waste liquid collection pipe is connected to the waste liquid collection container.

7. The electrode slurry sampling device according to claim 6, characterized in that, The waste liquid collection module also includes a drive mechanism, which is disposed on the support module and is connected to the waste liquid collection pipe in a driving connection. The support platform is provided with a clearance opening; the driving mechanism is used to drive the waste liquid collection pipe to move the waste liquid collection bucket through the clearance opening, so that the waste liquid collection bucket can be located on the side of the support platform that is close to or far from the discharge connector.

8. The electrode slurry sampling device according to claim 6, characterized in that, The inner diameter of the waste liquid collection hopper gradually decreases from the collection port to the outlet of the waste liquid collection hopper.

9. The electrode slurry sampling device according to claim 6, characterized in that, The waste liquid collection module also includes a weight detection component for detecting the weight of the waste liquid collection container.

10. The electrode slurry sampling device according to claim 1, characterized in that, The metering pump is a gear pump.

11. The electrode slurry sampling device according to any one of claims 1-10, characterized in that, It also includes a control module, and the metering pump and the three-way valve are electrically connected to the control module.

12. The electrode slurry sampling device according to any one of claims 1-10, characterized in that, The support module is equipped with casters at its bottom.

13. The electrode slurry sampling device according to claim 1, characterized in that, It also includes a pressure detection component, which is disposed on the sample inlet line and located between the three-way valve and the metering pump.

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