Raw material pretreatment structure for mixed processing of high-porosity lithium battery diaphragm material

Abstract

The utility model discloses a raw material pretreatment structure for mixed processing of a high-porosity lithium battery diaphragm material, which belongs to the technical field of diaphragm raw material pretreatment, and is characterized by comprising a processing tank, the left side of the processing tank is fixedly connected with a cleaning mechanism, and the right side of the processing tank is fixedly connected with a drying mechanism; a feeding disc is fixedly connected to the top of the inner side of the processing tank, an upper cover is movably connected to the top of the processing tank, the processing tank serves as a main body of the whole pretreatment structure and provides installation and working space for other components, it is ensured that the whole pretreatment process is conducted in a relatively closed and stable environment, and the pretreatment efficiency is improved. The processing tank is simple in structure, the processing effect and operation safety can be guaranteed, the cleaning mechanism, the drying mechanism, the feeding disc, the upper cover, the drainage pipe, the disc outlet and the material receiving disc can be supported and limited, the feeding disc is designed to be funnel-shaped, raw materials can be effectively guided to enter the processing tank through the funnel-shaped design, and accumulation and blockage of the raw materials at the position of the feeding opening are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm raw material pretreatment, and particularly relates to a pretreatment structure for mixed processing raw materials of a high-porosity lithium battery diaphragm material. Background Art

[0002] High-porosity lithium battery diaphragm materials mainly adopt polyolefin materials, including polyethylene and polypropylene. As one of the key inner components of the battery, the performance of the lithium battery diaphragm directly affects the interface structure, internal resistance, capacity, cycle performance, and safety performance of the battery. In order to achieve high-performance lithium batteries, the diaphragm material needs to have electronic insulation to ensure mechanical isolation between the positive and negative electrodes. At the same time, it also needs to have a certain pore size and porosity to ensure low resistance and high ionic conductivity, and have good permeability to lithium ions. In addition, the diaphragm material also needs to have sufficient mechanical properties, including puncture strength and tensile strength, but the thickness should be as small as possible to ensure spatial stability and flatness, and at the same time have good thermal stability and automatic shutdown protection performance.

[0003] Most of the existing lithium battery diaphragms are compounded through single-layer films during production. Due to the insufficient product performance of single-layer compounded lithium batteries, multi-roll compounding is carried out on the basis of single-layer films. However, when the existing production line performs multi-roll compounding, since the diaphragm is prone to contaminating floating dust during feeding and guiding, the subsequent compounding effect becomes poor.

[0004] An existing patent (Publication No.: CN220611588U), a pretreatment device for lithium battery diaphragm production, includes a unwind unit, which includes an unwind machine table and a plurality of unwind rollers arranged on the unwind machine table, a compounding unit, which includes a compounding machine table and a compounding module arranged on the compounding machine table, the compounding module includes an upper roller mechanism and a lower roller mechanism, and a preheating unit, which includes a preheating machine table, a plurality of preheating rollers arranged on the preheating machine table, and a pressing roller arranged on the preheating machine table and cooperating with the preheating rollers. The utility model synchronously unwinds through multiple groups of unwind rollers, so that in the early stage, multiple layers of diaphragms enter the compounding module in pairs respectively for preliminary normal-temperature compounding, and the compounded diaphragms pass through the preheating unit again, so that multiple layers of diaphragms sequentially pass through between each preheating roller and the pressing roller in a staggered snake shape, thereby completing secondary heating compounding, and thus improving the compounding efficiency of multi-layer diaphragm products.

[0005] In view of the above problems, the existing patent gives a solution, but it lacks a structure for pretreating polyolefin materials of lithium battery diaphragms, resulting in impurities and contaminants in the polyolefin materials, thereby reducing the purity of lithium battery diaphragms.

[0006] Therefore, a pretreatment structure for mixed processing raw materials of a high-porosity lithium battery diaphragm material is proposed. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a pretreatment structure for the mixed processing raw materials of a high-porosity lithium battery separator material, which can solve the problem that the existing pretreatment of separator raw materials lacks a structure for pretreating polyolefin materials for lithium battery separators, resulting in impurities and pollutants in the polyolefin materials, thereby reducing the purity of lithium battery separators.

[0008] To achieve the above object, the present utility model provides the following technical solution: A pretreatment structure for the mixed processing raw materials of a high-porosity lithium battery separator material, including a processing tank, a cleaning mechanism is fixedly connected to the left side of the processing tank, a drying mechanism is fixedly connected to the right side of the processing tank, a feeding tray is fixedly connected to the top inside the processing tank, an upper cover is movably connected to the top of the processing tank, a feeding port is fixedly connected to the top of the upper cover, the feeding port is communicated with the upper cover, a drain pipe is fixedly connected to the bottom of the processing tank, the drain pipe is communicated with the bottom of the processing tank, a support frame is bolted to the bottom of the processing tank, a discharging port is opened on the front side of the processing tank, and a receiving tray is slidably connected inside the processing tank;

[0009] The cleaning mechanism includes a water storage ring, nozzles, a pressure pump, a water storage tank and a water supply pipe. The water storage ring is fixedly connected inside the processing tank, the nozzles are fixedly connected inside the water storage ring, the pressure pump is fixedly connected to the left side of the processing tank, the water storage tank is fixedly connected to the bottom of the pressure pump, the water supply pipe is fixedly connected to the top left side of the water storage tank, the nozzles are communicated with the water storage ring, the pressure pump is communicated with the water storage ring and the water storage tank, and the water storage tank is communicated with the water supply pipe.

[0010] Preferably, the drying mechanism includes a fan, a limiting pipe, heating pipes and air outlet holes. The fan is fixedly connected to the right side of the processing tank.

[0011] Preferably, the limiting pipe is fixedly connected inside the processing tank, the right side of the limiting pipe penetrates through the processing tank and is communicated with the right side of the processing tank, the right side of the limiting pipe is fixedly connected to the top of the fan, and the limiting pipe is communicated with the fan.

[0012] Preferably, the heating pipes are fixedly connected inside the limiting pipe, and the air outlet holes are opened at the bottom of the limiting pipe.

[0013] Preferably, a base is bolted to the bottom of the fan, and the side of the base away from the fan is bolted to the bottom right side of the processing tank.

[0014] Preferably, the limiting pipe is made of S stainless steel material, and the surface of the limiting pipe is coated with a waterproof coating.

[0015] Preferably, a handle is bolted to the front side of the receiving tray, and anti-slip patterns are engraved on the surface of the handle.

[0016] Preferably, the inner side of the material receiving tray is in the shape of a filter screen, and the inner side of the material receiving tray is coated with an anti-corrosion coating.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. The processing tank of the present application serves as the main body of the entire pretreatment structure, providing installation and working space for other components, ensuring that the entire pretreatment process is carried out in a relatively closed and stable environment, which is beneficial to ensuring the treatment effect and operation safety. Moreover, it can support and limit the cleaning mechanism, drying mechanism, feeding device, upper cover, drain pipe, discharge port, and material receiving tray. The feeding tray is funnel-shaped, and this funnel-shaped design can effectively guide the raw materials into the processing tank, reducing the accumulation and blockage of raw materials at the feeding port and ensuring the smoothness of feeding. During the pretreatment process, the upper cover can tightly seal the processing tank, preventing external impurities from entering, ensuring the cleanliness of the treatment environment, and at the same time avoiding the leakage of internal water vapor, odors, etc. into the external environment. The feeding port facilitates the user to add raw materials, and the drain pipe timely discharges the sewage after cleaning to keep the environment inside the processing tank clean. The support frame provides stable support for the processing tank, ensuring that there will be no shaking or tilting during the working process and guaranteeing the normal operation of the equipment. The discharge port facilitates the removal of the processed raw materials, improving the convenience of operation and work efficiency. The inner side of the material receiving tray is in the shape of a filter screen, and this filter screen-shaped design can effectively intercept the raw materials, keeping them on the material receiving tray, while allowing the cleaned water to smoothly leak into the bottom inside the processing tank, realizing the rapid separation of raw materials and water. The water storage ring can evenly distribute the water to each nozzle, ensuring the all-round cleaning of the raw materials on the inner side of the material receiving tray and improving the cleaning effect and uniformity. The nozzle can spray the water flow onto the surface of the raw materials on the inner side of the material receiving tray to clean the raw materials on the inner side of the material receiving tray. The pressure pump provides sufficient pressure for the cleaning water, enhancing the flushing strength and effectively removing impurities and pollutants on the surface of the raw materials. The water storage tank provides sufficient water source reserve for the cleaning process, ensuring that the cleaning operation will not be interrupted due to water shortage during a long-term cleaning operation. The water supply pipe can conveniently introduce external water source into the water storage tank to ensure that there is always enough water in the water storage tank for the cleaning operation. The fan provides strong wind power, enabling the hot air to quickly flow inside the processing tank, accelerating the drying process. The limiting pipe restricts and guides the air flow, ensuring that the hot air can be concentrated and evenly blown towards the raw materials to be dried, improving the drying uniformity, and can also support and limit the heating pipe. The heating pipe generates high temperature, heating the air sent by the fan into hot air to provide heat for drying. The air outlet holes enable the hot air to be evenly blown out, fully contacting with the raw materials, improving the drying effect and efficiency;

[0019] 2. Compared with an existing pretreatment structure for the mixed processing raw materials of a high-porosity lithium battery separator material, the present application achieves the effect of pretreating the polyolefin material of the lithium battery separator through the cooperation of a cleaning mechanism and a drying mechanism, reducing the impurities and pollutants contained in the polyolefin material, thereby improving the purity of the lithium battery separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structure diagram of the pretreatment structure for the mixed processing raw materials of the high-porosity lithium battery separator material of the present utility model;

[0021] Figure 2 is the overall structure diagram of the cleaning mechanism of the present utility model;

[0022] Figure 3 is the overall structure diagram of the drying mechanism of the present utility model;

[0023] Figure 4 is the schematic structural diagram of the discharging port of the present utility model;

[0024] Figure 5 is the schematic structural diagram of the air outlet hole of the present utility model.

[0025] In the figure, 1, processing tank; 2, cleaning mechanism; 201, water storage ring; 202, nozzle; 203, pressure pump; 204, water storage tank; 205, water supply pipe; 3, drying mechanism; 301, fan; 302, limiting pipe; 303, heating pipe; 304, air outlet hole; 4, feeding tray; 5, upper cover; 6, feeding port; 7, drain pipe; 8, support frame; 9, receiving tray; 10, base; 11, handle; 12, discharging port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5 , the present utility model provides the following technical solutions:

[0028] A pre-treatment structure for a mixed processing raw material of a high-porosity lithium battery separator material, including a processing tank 1, a cleaning mechanism 2 fixedly connected to the left side of the processing tank 1, a drying mechanism 3 fixedly connected to the right side of the processing tank 1, a feeding tray 4 fixedly connected to the top inside the processing tank 1, an upper cover 5 movably connected to the top of the processing tank 1, a feeding port 6 fixedly connected to the top of the upper cover 5, the feeding port 6 communicating with the upper cover 5, a drain pipe 7 fixedly connected to the bottom of the processing tank 1, the drain pipe 7 communicating with the bottom of the processing tank 1, a support frame 8 bolted to the bottom of the processing tank 1, a discharge port 12 provided on the front side of the processing tank 1, and a receiving tray 9 slidably connected inside the processing tank 1;

[0029] The cleaning mechanism 2 includes a water storage ring 201, a nozzle 202, a pressure pump 203, a water storage tank 204, and a water supply pipe 205. The water storage ring 201 is fixedly connected to the inside of the processing tank 1, the nozzle 202 is fixedly connected to the inside of the water storage ring 201, the pressure pump 203 is fixedly connected to the left side of the processing tank 1, the water storage tank 204 is fixedly connected to the bottom of the pressure pump 203, the water supply pipe 205 is fixedly connected to the top left side of the water storage tank 204, the nozzle 202 communicates with the water storage ring 201, the pressure pump 203 communicates with the water storage ring 201 and the water storage tank 204, and the water storage tank 204 communicates with the water supply pipe 205.

[0030] In this embodiment: By setting the processing tank 1 as the main body of the entire pretreatment structure, it provides a space for the installation and operation of other components, ensuring that the entire pretreatment process is carried out in a relatively closed and stable environment, which is conducive to ensuring the treatment effect and operation safety, and can support and position the cleaning mechanism 2, drying mechanism 3, feeding device, upper cover 5, drain pipe 7, discharge port 12 and receiving tray 9. By setting the feeding tray 4 to be funnel-shaped, the funnel-shaped design can effectively guide the raw materials into the processing tank 1, reducing the accumulation and blockage of raw materials at the feeding port 6 and ensuring the smoothness of feeding. By setting the upper cover 5, during the pretreatment process, the upper cover 5 can tightly seal the processing tank 1, preventing external impurities from entering, ensuring the cleanliness of the treatment environment, and at the same time avoiding the leakage of internal water vapor, odors, etc. into the external environment. By setting the feeding port 6, it is convenient for users to add raw materials. By setting the drain pipe 7, the sewage after cleaning can be discharged in time to keep the environment inside the processing tank 1 clean. By setting the support frame 8, it provides stable support for the processing tank 1, ensuring that there will be no shaking or tilting during operation and guaranteeing the normal operation of the equipment. By setting the discharge port 12, it is convenient to take out the processed raw materials, improving the convenience of operation and work efficiency. By setting the inner side of the receiving tray 9 to be filter mesh-shaped, the filter mesh-shaped design can effectively intercept the raw materials, making them stay on the receiving tray 9, while allowing the cleaned water to flow smoothly into the bottom inside the processing tank 1, realizing the rapid separation of raw materials and water. By setting the water storage ring 201, it can evenly distribute water to each nozzle 202, ensuring the all-round cleaning of the raw materials on the inner side of the receiving tray 9 and improving the cleaning effect and uniformity. By setting the nozzle 202, the water flow can be sprayed onto the surface of the raw materials on the inner side of the receiving tray 9 to clean the raw materials on the inner side of the receiving tray 9. By setting the pressure pump 203, it provides sufficient pressure for the cleaning water, enhancing the flushing strength and effectively removing impurities and pollutants on the surface of the raw materials. By setting the water storage tank 204, it provides sufficient water source reserve for the cleaning process, ensuring that the cleaning operation will not be interrupted due to water shortage during long-term cleaning operations. By setting the water supply pipe 205, it is convenient to introduce external water source into the water storage tank 204, ensuring that there is always enough water in the water storage tank 204 for cleaning operations.

[0031] Specifically, as Figure 3 , Figure 4 , Figure 5 shown, the drying mechanism 3 includes a fan 301, a limiting pipe 302, a heating pipe 303 and an air outlet hole 304, and the fan 301 is fixedly connected to the right side of the processing tank 1.

[0032] Specifically, as Figure 3 , Figure 4 , Figure 5As shown, the limiting pipe 302 is fixedly connected to the inside of the processing tank 1. The right side of the limiting pipe 302 penetrates through the processing tank 1 and communicates with the right side of the processing tank 1. The right side of the limiting pipe 302 is fixedly connected to the top of the fan 301, and the limiting pipe 302 communicates with the fan 301.

[0033] Specifically, as Figure 3 , Figure 5 shown, the heating pipe 303 is fixedly connected to the inside of the limiting pipe 302, and the air outlet holes 304 are opened at the bottom of the limiting pipe 302.

[0034] In this embodiment: By setting the fan 301 to provide strong wind force, hot air can quickly flow in the processing tank 1, accelerating the drying process. By setting the limiting pipe 302 to constrain and guide the air flow, it ensures that the hot air can be concentrated and evenly blown onto the raw materials to be dried, improving the uniformity of drying, and can support and limit the heating pipe 303. By setting the heating pipe 303 to generate high temperature, the wind sent by the fan 301 is heated into hot air to provide heat for drying. By setting the air outlet holes 304, the hot air can be evenly blown out, fully contacting the raw materials, improving the drying effect and efficiency.

[0035] Specifically, as Figure 4 shown, a base 10 is bolted to the bottom of the fan 301, and one side of the base 10 away from the fan 301 is bolted to the bottom of the right side of the processing tank 1.

[0036] Specifically, as Figure 3 , Figure 5 shown, the limiting pipe 302 is made of S stainless steel material, and the surface of the limiting pipe 302 is coated with waterproof paint.

[0037] In this embodiment: By setting the base 10, the base 10 provides stable support for the fan 301, ensuring that the fan 301 will not shake or displace during operation, thus guaranteeing the stability and reliability of the fan 301's work. By setting the limiting pipe 302 to be made of S stainless steel material, the limiting pipe 302 made of S stainless steel material has excellent high-temperature resistance and can withstand higher temperatures during the drying process, ensuring the stability of its structure and performance. By setting the waterproof paint, it further enhances the waterproof performance of the limiting pipe 302, preventing moisture from penetrating into the pipe and affecting the work of the heating pipe 303, and also helps to protect the limiting pipe 302 from damage in a humid environment.

[0038] Specifically, as Figure 4 shown, a handle 11 is bolted to the front side of the receiving tray 9, and anti-slip patterns are engraved on the surface of the handle 11.

[0039] Specifically, as Figure 2 shown, the inside of the receiving tray 9 is set in a filter mesh shape, and the inside of the receiving tray 9 is coated with anti-corrosion paint.

[0040] In this embodiment: By providing the handle 11, the setting of the handle 11 facilitates the operator to push and pull the material receiving tray 9, making its entry and exit in the processing tank 1 easier and more labor-saving. By providing anti-slip patterns, the friction is increased. Even if there is sweat or water stains on the operator's hands, the handle 11 can be firmly held, preventing the material receiving tray 9 from falling off or causing operation errors due to slippery hands during the operation. By setting the inner side of the material receiving tray 9 to be in a filter mesh shape, being in a filter mesh shape can effectively intercept the raw materials while allowing the water flow to pass through smoothly, achieving rapid separation and improving the processing efficiency. By providing anti-corrosion paint, the service life of the material receiving tray 9 can be extended, making it not easily corroded and damaged in an environment where it is in long-term contact with water and chemical substances.

[0041] Working principle: First, the user places the processing tank 1 at the required working position. Then, when pretreatment operations need to be carried out, the user puts the raw materials into the processing tank 1 through the feed port 6. The raw materials slowly fall into the inner side of the material receiving tray 9 along the feed tray 4. After that, the user connects the water flow to the water supply pipe 205. After connecting the water, the user powers on and starts the pressure pump 203. The pressure pump 203 pressurizes and transports the water to the water storage ring 201. The water is evenly distributed to each nozzle 202 through the water storage ring 201. The nozzles 202 spray the water flow onto the surface of the raw materials on the inner side of the material receiving tray 9. During the process of cleaning the raw materials, the sewage leaks through the filter mesh on the inner side of the material receiving tray 9 to the bottom of the processing tank 1. The user opens the drain pipe 7 to discharge the sewage. Then, after the cleaning is completed, the user powers on and starts the fan 301 and the heating pipe 303. The fan 301 generates strong wind and transports the wind to the limiting pipe 302. The heating pipe 303 in the limiting pipe 302 heats the wind into hot air. The hot air blows out evenly from the air outlet holes 304, concentrating and evenly blowing on the raw materials to be dried, accelerating the drying of the raw materials. Finally, after the drying is completed, the user pulls out the material receiving tray 9 by means of the handle 11, collects the pretreated raw materials and transports them to the next processing procedure.

[0042] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pretreatment structure for raw materials in the hybrid processing of a high-porosity lithium battery separator material, including a processing tank (1), characterized in that: The left side of the processing tank (1) is fixedly connected with a cleaning mechanism (2), the right side of the processing tank (1) is fixedly connected with a drying mechanism (3), the top inside the processing tank (1) is fixedly connected with a feeding tray (4), the top of the processing tank (1) is movably connected with an upper cover (5), the top of the upper cover (5) is fixedly connected with a feeding port (6), the feeding port (6) is communicated with the upper cover (5), the bottom of the processing tank (1) is fixedly connected with a drain pipe (7), the drain pipe (7) is communicated with the bottom of the processing tank (1), the bottom of the processing tank (1) is bolted with a support frame (8), a discharge tray opening (12) is arranged on the front side of the processing tank (1), and a material receiving tray (9) is slidably connected inside the processing tank (1); The cleaning mechanism (2) includes a water storage ring (201), a nozzle (202), a pressure pump (203), a water storage tank (204) and a water supply pipe (205). The water storage ring (201) is fixedly connected to the inside of the processing tank (1), the nozzle (202) is fixedly connected to the inside of the water storage ring (201), the pressure pump (203) is fixedly connected to the left side of the processing tank (1), the water storage tank (204) is fixedly connected to the bottom of the pressure pump (203), the water supply pipe (205) is fixedly connected to the top left side of the water storage tank (204), the nozzle (202) is communicated with the water storage ring (201), the pressure pump (203) is communicated with the water storage ring (201) and the water storage tank (204), and the water storage tank (204) is communicated with the water supply pipe (205).

2. The pretreatment structure of the mixed processing raw materials of a high-porosity lithium battery separator material according to claim 1, characterized in that: The drying mechanism (3) includes a fan (301), a limiting pipe (302), a heating pipe (303) and an air outlet hole (304). The fan (301) is fixedly connected to the right side of the processing tank (1).

3. The pretreatment structure of the mixed processing raw materials of a high-porosity lithium battery separator material according to claim 2, characterized in that: The limiting pipe (302) is fixedly connected to the inside of the processing tank (1), the right side of the limiting pipe (302) penetrates through the processing tank (1) and is communicated with the right side of the processing tank (1), the right side of the limiting pipe (302) is fixedly connected to the top of the fan (301), and the limiting pipe (302) is communicated with the fan (301).

4. A pretreatment structure for a mixed processing raw material of a high-porosity lithium battery separator material according to claim 3, characterized in that: The heating pipe (303) is fixedly connected to the inside of the limiting pipe (302), and the air outlet hole (304) is arranged at the bottom of the limiting pipe (302).

5. The pretreatment structure of the mixed processing raw materials of a high-porosity lithium battery separator material according to claim 4, characterized in that: The bottom of the fan (301) is bolted with a base (10), and one side of the base (10) away from the fan (301) is bolted to the bottom right side of the processing tank (1).

6. The pretreatment structure of the mixed processing raw materials of a high-porosity lithium battery separator material according to claim 5, characterized in that: The limiting pipe (302) is made of 310S stainless steel material, and the surface of the limiting pipe (302) is coated with a waterproof coating.

7. The pretreatment structure of the mixed processing raw materials of a high-porosity lithium battery separator material according to claim 1, characterized in that: The front side of the material receiving tray (9) is bolted with a handle (11), and the surface of the handle (11) is engraved with anti-slip lines.

8. A pretreatment structure for a mixed processing raw material of a high-porosity lithium battery separator material according to claim 1, characterized in that: The inside of the material receiving tray (9) is in a filter mesh shape, and the inside of the material receiving tray (9) is coated with an anti-corrosion coating.

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