A water-based surfactant coating device for lead-acid battery pe separators

Abstract

The application discloses a lead-acid battery PE separator water-based surfactant coating device and belongs to the technical field of lead-acid battery production equipment. Mainly includes: main shell, coating assembly, which is installed in the main shell, the coating assembly includes a coating inner shell installed in the main shell, and the coating inner shell is installed with two groups of vibration boxes. The lead-acid battery PE separator water-based surfactant coating device can efficiently conduct the high-frequency vibration generated by the ultrasonic transducer to the vibration box when the ultrasonic transducer works, and then uniformly transmit to the coating liquid by the vibration box, so that a large number of micro-bubbles are formed in the coating liquid and quickly collapse, and then cavitation effect is generated, which can enhance the penetration power of the coating liquid, effectively break through the surface resistance of the PE separator, and help the coating liquid fully penetrate into the internal pore, rib gap and thickness center of the PE separator and other key structure areas.

Description

Technical Field

[0001] This application relates to the technical field of lead-acid battery production equipment, specifically a water-based surfactant coating device for PE separators in lead-acid batteries. Background Technology

[0002] In lead-acid batteries, the PE (polyethylene) separator is one of the key components inside the battery. Its core function is to physically isolate the positive and negative electrodes while allowing ions to pass freely, ensuring normal charging and discharging of the battery. However, polyethylene (PE) itself is a hydrophobic material, and the electrolyte does not easily wet the untreated PE, resulting in very high internal resistance of PE. Surfactant coating, as one of the treatment methods for PE separators, is used to optimize the hydrophilicity and electrolyte wettability of the separator, thereby reducing the internal resistance of PE and improving the overall performance of the battery.

[0003] In the process of coating lead-acid battery PE separators with water-based surfactants, most companies in the industry use a dip coating process. In practice, the prepared water-based surfactant coating solution is first injected into a special open container to ensure that the liquid depth can completely cover the PE separator to be treated. Then, the PE separators cut to specific sizes are placed steadily into the container by a robotic arm or manual operation, so that the separators are completely immersed in the coating solution. The adhesion of the liquid allows the coating solution to be evenly adhered to the front and back surfaces and edges of the separator, thus completing the initial coating process.

[0004] However, the dip-coating method has drawbacks. Limited by the penetrating ability of the coating liquid itself, it is difficult to fully and evenly penetrate into the internal structure and rib structure of the separator, nor is it easy to wet the center of the separator thickness. This will adversely affect the overall hydrophilicity of the PE separator and the optimization effect of electrolyte wettability, thus hindering the improvement of battery performance. Therefore, it is necessary to provide a water-based surfactant coating device for lead-acid battery PE separators to solve the above problems. Summary of the Invention

[0005] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a water-based surfactant coating device for lead-acid battery PE separators, which solves the problem that traditional dip coating equipment has limited penetration of the coating liquid, making it difficult to fully and evenly penetrate into the interior of the separator, the rib structure and the center of the thickness, thus affecting the hydrophilicity of the PE separator and the wettability of the electrolyte, and is not conducive to improving battery performance.

[0006] The technical solution adopted by this application to solve its technical problem is: a water-based surfactant coating device for PE separators of lead-acid batteries, comprising: main housing; A coating assembly is installed inside the main housing. The coating assembly includes a coating inner shell installed inside the main housing. The coating inner shell is equipped with two sets of vibration boxes, and multiple sets of ultrasonic transducers are installed inside the vibration boxes. A heating assembly is installed inside the coating inner shell. The heating assembly includes two sets of heating covers installed on the coating inner shell. Multiple sets of assembly plates are installed on the heating covers. Each assembly plate is equipped with heat-conducting fins, which are adapted to transfer the heat generated by the heating assembly to the coating liquid.

[0007] Furthermore, a drain valve is connected to the lower part of one end of the coated inner shell, and one end of the drain valve extends to the outside of the main shell.

[0008] Furthermore, the lower part of the main housing is equipped with multiple sets of self-locking casters, which are suitable for moving the main housing.

[0009] Furthermore, a protective cover is installed inside the coated inner shell, and an electric heating core is installed at the lower part of one end of the main shell, with a heating tube installed on the electric heating core; One end of the heating tube extends into the coated inner shell and penetrates both the protective cover and the heating cover.

[0010] Furthermore, the heating tubes are arranged in a serpentine pattern within the heating shroud.

[0011] Furthermore, a protective tube is installed on the protective cover and the heating cover, and the protective tube is adapted to protect the connection between the heating tube and the heating cover.

[0012] Furthermore, a temperature sensor is installed on the inner coating shell to monitor the temperature of the coating liquid inside the inner coating shell.

[0013] The beneficial effects of this application are as follows: The water-based surfactant coating device for lead-acid battery PE separators provided in this application, through the cooperation of the vibrating box and multiple sets of ultrasonic transducers in the coating assembly, the high-frequency vibration generated by the ultrasonic transducers during operation can be efficiently transmitted to the vibrating box, and then uniformly transmitted to the coating liquid by the vibrating box, causing a large number of micro bubbles to form inside the coating liquid and collapse rapidly, thereby generating a cavitation effect. This effect can enhance the penetration power of the coating liquid, effectively overcome the surface resistance of the PE separator, and help the coating liquid fully penetrate into the internal pores, rib gaps and thickness center of the PE separator, and other key structural areas.

[0014] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a first three-dimensional structural schematic diagram of a water-based surfactant coating device for a lead-acid battery PE separator according to an embodiment of this application. Figure 2 This is a second three-dimensional structural schematic diagram of a water-based surfactant coating device for a lead-acid battery PE separator according to an embodiment of this application; Figure 3 This is a three-dimensional structural schematic diagram of the coating assembly and heating assembly according to embodiments of this application; Figure 4 This is a cross-sectional view of a coating assembly according to an embodiment of this application; Figure 5 This is a three-dimensional structural schematic diagram of the heating assembly according to an embodiment of this application; Figure 6 This is a three-dimensional structural diagram of the electric heating core, heating tube, and protective tube according to an embodiment of this application.

[0016] The following are the labeling elements in the figure: 1. Main housing; 11. Self-locking caster wheel; 2. Coating assembly; 21. Coating inner shell; 22. Vibration box; 23. Ultrasonic transducer; 24. Drain valve; 3. Heating assembly; 31. Heating cover; 32. Assembly plate; 33. Heat-conducting fins; 34. Protective cover; 35. Electric heating core; 36. Heating tube; 37. Protective tube; 38. Temperature sensor. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] like Figures 1-4As shown, this application provides a water-based surfactant coating device for lead-acid battery PE separators, including a main housing 1. The main housing 1 serves as the load-bearing structure of the entire device, providing installation space for the internal components and possessing sufficient strength and stability to ensure the device remains stable during operation. Self-locking casters 11 are bolted to the four corners at the bottom of the main housing 1. These self-locking casters 11 improve the flexibility of the device, allowing operators to easily move the device to different production stations or operating areas. When the device reaches the designated position, the self-locking casters 11 can lock, preventing the device from shifting during operation and providing a stable environment for subsequent coating operations, effectively preventing the coating effect from being affected by device shaking.

[0020] A coating assembly 2 is installed inside the main housing 1. The coating assembly 2 is the part that achieves efficient coating of water-based surfactants on the PE separator. The coating assembly 2 includes a coating inner shell 21 fixedly installed on the inner wall of the main housing 1. The coating inner shell 21 is used to contain the water-based surfactant coating liquid. Its internal space meets the size of the PE separator and the capacity of the coating liquid to ensure that the PE separator can be completely immersed in the coating liquid, thereby achieving comprehensive and uniform coating.

[0021] Two sets of vibration boxes 22 are fixedly installed at the bottom of the inner shell 21. Multiple sets of ultrasonic transducers 23 are fixedly installed inside the vibration boxes 22. The vibration boxes 22 serve two purposes: firstly, they bear the load and provide a mounting base for the ultrasonic transducers 23; secondly, they can conduct and disperse the vibrations generated by the ultrasonic transducers 23, making the vibrations act more evenly on the coating liquid. At the same time, the ultrasonic transducers 23 are connected to an external power source and are started by a controller, so that they generate high-frequency ultrasonic vibrations during operation. This vibration causes a large number of tiny bubbles to be generated inside the coating liquid. These bubbles are rapidly generated and burst, forming a cavitation effect. The impact force and micro-jet generated by the cavitation effect can enhance the penetration ability of the coating liquid, allowing it to penetrate more fully and evenly into the internal structure, rib structure, and thickness center of the PE separator. This solves the problem of insufficient penetration of the coating liquid in traditional dip coating, which affects the hydrophilicity of the PE separator and the wettability of the electrolyte, thus creating favorable conditions for improving the overall performance of the lead-acid battery.

[0022] A drain valve 24 is connected to the lower part of one end of the coating inner shell 21. One end of the drain valve 24 extends to the outside of the main shell 1. The drain valve 24 provides a convenient channel for the discharge of coating liquid after the coating operation is completed. After one coating is completed, the operator can open the drain valve 24 to drain the coating liquid in the coating inner shell 21 so as to clean and maintain the coating inner shell 21, or replace the coating liquid with a different formula to meet the coating needs of different types of PE partitions, thereby improving the practicality and maintainability of the device.

[0023] likeFigure 3 , Figure 5 and Figure 6 As shown, a heating assembly 3 is installed inside the coating inner shell 21. The function of the heating assembly 3 is to heat the coating liquid to optimize its performance and improve the coating effect and efficiency. The heating assembly 3 includes a heating cover 31 bolted to the inner walls on both sides of the coating inner shell 21. The heating cover 31 can concentrate and guide the heat, so that the heat generated by the heating assembly 3 can be more effectively transferred to the coating liquid and reduce heat loss. Multiple sets of mounting plates 32 are bolted to the heating cover 31, and heat-conducting components are fixedly installed on the mounting plates 32. The heat-conducting fins 33, wherein the mounting plate 32 provides a stable mounting carrier for the heat-conducting fins 33, ensuring that the heat-conducting fins 33 will not loosen or fall off during the operation of the device. By increasing the contact area with the coating liquid, the heat-conducting fins 33 quickly and evenly transfer the heat generated by the heating component 3 to the coating liquid, making the temperature distribution of the coating liquid more uniform, preventing local overheating or insufficient temperature, and ensuring that all parts of the PE partition can fully contact the coating liquid at a suitable temperature during the coating process, further improving the uniformity and effect of the coating.

[0024] A protective cover 34 is fixedly installed at the bottom of the inner shell 21. An electric heating core 35 is installed at the lower part of one end of the main shell 1 by bolts. A heating tube 36 is installed on the electric heating core 35. The electric heating core 35 is the heat source of the entire heating assembly 3. After being connected to an external power supply, it converts electrical energy into heat energy and transfers it to the coating liquid through the heating tube 36. The protective cover 34 provides all-round protection for the heating tube 36. During the operation of the device, the removal of the PE partition and the shaking of the coating liquid may cause the heating tube 36 to be bumped or come into contact with foreign objects. The protective cover 34 can effectively block these potential damages and prevent the heating tube 36 from being damaged by collisions. At the same time, it can also prevent the coating liquid from directly contacting the heating tube 36, reducing the risk of the heating tube 36 being corroded by the coating liquid and extending the service life of the heating tube 36.

[0025] Specifically, one end of the heating tube 36 extends into the inner coating shell 21 and penetrates the protective cover 34. The heating tube 36 is arranged in a serpentine pattern within the heating cover 31. This serpentine design increases the contact length between the heating tube 36 and the coating liquid, allowing heat to be transferred more fully and evenly to the coating liquid, improving heating efficiency and ensuring the coating liquid reaches the required temperature in a shorter time. A protective tube 37 is fixedly installed at the connection between the protective cover 34 and the heating cover 31. The protective tube 37 protects the connecting part between the heating tube 36 and the heating cover 31, preventing the connection from being corroded by the coating liquid or damaged by external forces during device operation. This ensures the stability of the connections between the various parts of the heating assembly 3, enabling the heating assembly 3 to operate stably for a long period.

[0026] A temperature sensor 38 is bolted to the inner wall of one end of the coating inner shell 21. The temperature sensor 38 is used to monitor the temperature of the coating liquid inside the coating inner shell 21 in real time. The temperature sensor 38 is electrically connected to the control system of the device and can transmit the detected temperature signal to the control system in a timely manner. When the temperature of the coating liquid deviates from the preset suitable coating temperature range, the control system will automatically adjust the working state of the heating component 3 according to the signal fed back by the temperature sensor 38, such as controlling the power of the electric heating core 35 or starting and stopping it, thereby controlling the temperature of the coating liquid and ensuring that the PE separator is always in a suitable temperature environment during the coating process, further improving the coating effect and ensuring that the hydrophilicity and electrolyte wettability of the PE separator reach the optimal state, thus providing a guarantee for the stable improvement of the performance of lead-acid batteries.

[0027] Working principle: When in use, the staff first pushes the device to the designated production area using the self-locking casters 11, locks the casters to ensure the device is stable, and then injects the prepared water-based surfactant coating liquid into the coating inner shell 21 through the injection port until the liquid can completely immerse the PE partition to be processed.

[0028] The control system of the starting device first activates the heating component 3. After the electric heating core 35 is connected to the power supply, it begins to heat up. The heat is transferred to the surrounding space through the serpentine heating tubes 36. The heating cover 31 concentrates the heat and guides it to the coating liquid. The heat-conducting fins 33 on the assembly plate 32 increase the heat exchange area, so that the temperature of the coating liquid rises evenly. At this time, the protective cover 34 and the protective tube 37 respectively protect the main body and connection parts of the heating tube 36, preventing the partition or impurities from contacting the heating tube 36 and causing damage. At the same time, it reduces the direct corrosion of the heating component by the coating liquid. Meanwhile, the temperature sensor 38 can transmit the detected temperature signal to the control system in a timely manner. When the temperature of the coating liquid deviates from the preset suitable coating temperature range, the control system will automatically adjust the working state of the heating component 3 according to the signal fed back by the temperature sensor 38, such as controlling the power of the electric heating core 35 or starting or stopping it, thereby controlling the temperature of the coating liquid and ensuring that the PE partition is always in a suitable temperature environment during the coating process.

[0029] When the temperature of the coating liquid reaches the preset value, the control system activates the ultrasonic transducer 23 of the coating component 2. The high-frequency vibration generated by the transducer is transmitted to the coating liquid through the vibration box 22. A large number of tiny bubbles are formed inside the liquid. These bubbles collapse rapidly under the action of vibration, and the resulting cavitation effect forms a strong micro-jet and impact force. This force penetrates the surface structure of the PE partition, causing the coating liquid to overcome the resistance of the hydrophobic material and penetrate deeply into the pores, rib gaps and thickness center area inside the partition.

[0030] After coating is completed, turn off the ultrasonic transducer 23 first. After the vibration stops completely, turn off the heating component 3. Then open the drain valve 24 to drain the used coating liquid. If recycling is required, it can be guided to the collection container through the external pipeline. If cleaning is required, inject clean water through the liquid injection port, start the ultrasonic transducer 23 for short-term cleaning, and then discharge the wastewater.

[0031] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lead acid battery PE separator water based surfactant coating apparatus characterized by: include: Main shell (1); The coating assembly (2) is installed inside the main housing (1). The coating assembly (2) includes a coating inner shell (21) installed inside the main housing (1). The coating inner shell (21) is equipped with two sets of vibration boxes (22). Multiple sets of ultrasonic transducers (23) are installed inside the vibration boxes (22). Heating assembly (3) is installed inside the coating inner shell (21). The heating assembly (3) includes two sets of heating covers (31) installed on the coating inner shell (21). Multiple sets of assembly plates (32) are installed on the heating covers (31). Each assembly plate (32) is equipped with heat-conducting fins (33). The heat-conducting fins (33) are adapted to transfer the heat generated by the heating assembly (3) to the coating liquid.

2. A water-based surfactant coating device for PE separators of lead-acid batteries according to claim 1, characterized in that: The lower part of one end of the coated inner shell (21) is connected to a drain valve (24), and one end of the drain valve (24) extends to the outside of the main shell (1).

3. A water-based surfactant coating device for PE separators of lead-acid batteries according to claim 1, characterized in that: The lower part of the main housing (1) is equipped with multiple sets of self-locking casters (11) suitable for moving the main housing (1).

4. A water-based surfactant coating device for PE separators of lead-acid batteries according to claim 1, characterized in that: A protective cover (34) is installed inside the coated inner shell (21), and an electric heating core (35) is installed at the lower part of one end of the main shell (1). A heating tube (36) is installed on the electric heating core (35). One end of the heating tube (36) extends into the coated inner shell (21) and penetrates the protective cover (34) and the heating cover (31).

5. A water-based surfactant coating device for PE separators of lead-acid batteries according to claim 4, characterized in that: The heating tubes (36) are located inside the heating cover (31) and are distributed in a serpentine pattern.

6. A water-based surfactant coating device for PE separators of lead-acid batteries according to claim 4, characterized in that: Protective tubes (37) are installed on the protective cover (34) and the heating cover (31), and the protective tubes (37) are adapted to protect the connection between the heating tube (36) and the heating cover (31).

7. A water-based surfactant coating device for PE separators of lead acid batteries according to claim 4, characterized in that: A temperature sensor (38) is installed on the inner coating shell (21) to monitor the temperature of the coating liquid inside the inner coating shell (21).

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