Heating bag mechanism of lithium battery oily PVDF diaphragm coating machine

Abstract

The utility model relates to the technical field of lithium battery manufacturing, in particular to a heating bag mechanism of a lithium battery oily PVDF (Polyvinylidene Fluoride) diaphragm coating machine, which comprises a heating box, a box door is arranged on the rear side of the heating box, a first purification cavity, a second purification cavity and a heating cavity are sequentially arranged in the heating box from left to right, and the three cavities are communicated with one another. According to the heating bag mechanism of the lithium battery oily PVDF diaphragm coating machine, by arranging a multi-stage air purification device composed of a stainless steel wire net filter plate, an activated carbon filter plate and an alkali liquor spraying system, particulate matter, harmful gas and volatile organic compounds in air are effectively removed, and it is ensured that air entering the heating box is clean and free of pollution; the condition that particulate matters in air are deposited on the surface of the diaphragm to influence the uniformity and the integrity of a coating layer is avoided, and meanwhile, the safety and the health of an operation environment are also guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery manufacturing technical field especially relates to a kind of heating package mechanism of lithium battery oil PVDF diaphragm coating machine. BACKGROUND

[0002] Lithium battery is widely used in portable electronic devices, electric vehicles, energy storage systems and other fields as a kind of efficient energy storage device, among them, diaphragm is one of the key components of lithium battery, plays the important role of isolating positive and negative, preventing short circuit and providing ion conduction channel, to improve the performance and safety of diaphragm, usually a layer of oil-based polyvinylidene fluoride material is coated on the surface of diaphragm, which not only can enhance the mechanical strength of diaphragm, but also can improve its thermal stability and chemical stability, and in the coating process of PVDF diaphragm, heating mechanism plays a crucial role, it is responsible for providing a controlled temperature condition for coating environment, ensures that coating material can be uniformly attached to the surface of diaphragm, and realizes rapid solidification, in addition, good air control is also crucial to maintain coating quality and production efficiency, therefore, an efficient and stable heating mechanism is one of the key factors to ensure coating quality.

[0003] The patent with patent publication number CN208321256U discloses a kind of drying mechanism of diaphragm material coating machine, the patent can effectively guarantee the drying performance of diaphragm material by the cooperation of heating pipe, air suction mechanism and temperature and humidity sensor, avoid the melting phenomenon of diaphragm material due to temperature is too high, or due to temperature is too low, affect the performance of diaphragm material, simultaneously, the second box is increased in the patent, air suction mechanism is used in cooperation with second box, can effectively cool the diaphragm material after drying, further improve the quality of diaphragm, however, although the patent performs well in temperature control and drying effect, there are still some deficiencies in actual application process, the patent is not equipped with effective air filtration system, so that the air sucked from outside or the air used in circulation contains particulate matter, pollutants, volatile organic compounds or other harmful gases, these impurities may deposit on the surface of diaphragm when hot air dries diaphragm, affect the uniformity and integrity of coating layer, in addition, if the air quality in the heating box is not good during coating process, volatile organic compounds or other harmful gases will pose a threat to the health of operating personnel, increase the risk of occupational disease.

[0004] Therefore, it is urgent to provide a kind of heating package mechanism of lithium battery oil PVDF diaphragm coating machine with air purification function. UTILITY MODEL CONTENT

[0005] In order to overcome the shortcomings of the prior art, the lithium battery oil PVDF diaphragm coating machine's heating package mechanism with air purification function is provided.

[0006] In order to achieve the above problems, the lithium battery oil PVDF diaphragm coating machine's heating package mechanism comprises a heating box, a box door is arranged at the rear side of the heating box, a first purification cavity, a second purification cavity and a heating cavity are sequentially arranged in the heating box from left to right, and the three cavities are communicated with each other.

[0007] In a preferred embodiment of the present application, a water tank is arranged on the side of the first purification cavity, a water pump is mounted on one side of the water tank, the water inlet end of the water pump is communicated with the water tank, one end of a water delivery pipe is connected to the water outlet end of the water pump, a spray head is mounted on the top of the first purification cavity, the other end of the water delivery pipe is connected to the spray head, a one-way valve is mounted on the spray head, one end of a drain pipe is connected to the bottom of the first purification cavity, the other end of the drain pipe extends to the outside of the heating box, and a valve is mounted on the drain pipe.

[0008] In a preferred embodiment of the present application, an exhaust pipe is connected to the top of the heating cavity, an electromagnetic valve is mounted on the exhaust pipe, a temperature and pressure sensor is further mounted on the top of the heating cavity, and the temperature and pressure sensor is electrically connected to the electromagnetic valve.

[0009] In a preferred embodiment of the present application, a plurality of screw rods are arranged on the rear side of the heating box in a symmetrical manner, and a fixing block is arranged on the screw rod.

[0010] In a preferred embodiment of the present application, a sealing ring is arranged around the edge of the box door.

[0011] In a preferred embodiment of the present application, a plurality of screw rods are arranged on the rear side of the heating box in a symmetrical manner, and a fixing block is arranged on the screw rod.

[0012] Compared with the prior art, the lithium battery oil PVDF diaphragm coating machine has the following technical effects: 1, the heating bag mechanism of the lithium battery oil PVDF diaphragm coating machine is provided with a multistage air purification device composed of a stainless steel wire mesh filter plate, an activated carbon filter plate and an alkali liquor spraying system, so that the particulate matter, harmful gas and volatile organic compounds in the air are effectively removed, the air entering the heating box is ensured to be clean and pollution-free, the particulate matter in the air is prevented from depositing on the diaphragm surface, the uniformity and integrity of the coating layer are prevented from being affected, and the safety and health of the operating environment are ensured.

[0013] 2, the mechanism is equipped with temperature pressure sensors and electromagnetic valves, realizes real-time monitoring and automatic adjustment of the temperature and pressure in the heating cavity, and ensures stable and safe equipment environment.

[0014] 3, the mechanism realizes convenient fixation of the box door through the cooperation of the threaded barrel, the screw rod and the fixing block, ensures the airtightness and operation safety of the heating box, avoids the mixing of external air and the leakage of internal gas. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0016] Figure 2 It is a three-dimensional structure schematic view of the heating box, the activated carbon filter plate and the electric heating plate of the utility model.

[0017] Figure 3 It is a three-dimensional structure schematic view of the one-way valve, the drain pipe and the valve of the utility model.

[0018] Figure 4 It is a three-dimensional structure schematic view of the fixing block, the screw rod and the sealing ring of the utility model.

[0019] Among them, the above drawing includes the following reference signs: 1, heating box, 101, box door, 2, activated carbon filter plate, 3, electric heating plate, 301, temperature controller, 4, limiting frame, 5, stainless steel wire mesh filter plate, 6, mounting frame, 7, buckle, 8, handle, 9, water tank, 10, water pump, 11, water delivery pipe, 12, spray head, 13, one-way valve, 14, drain pipe, 15, valve, 16, exhaust pipe, 17, electromagnetic valve, 18, temperature pressure sensor, 19, threaded barrel, 20, screw rod, 2001, fixing block, 21, sealing ring, 22, heat pipe. DETAILED DESCRIPTION

[0020] Although the present application can be described in relation to a particular application or industry, those skilled in the art will recognize a broader applicability of the present application. Those of ordinary skill in the art will recognize that terms such as: above, below, upper, lower, and the like are used as descriptions of relative positioning, and not as limitations on the scope of the present application as defined by the appended claims. Any numerical designations such as: first or second are merely illustrative, and are not intended to limit the scope of the present application in any way.

[0021] Example 1: see Figures 1-2 The utility model relates to a kind of heating package mechanism of lithium battery oily PVDF diaphragm coating machine, including heating box 1, two box doors 101 are provided in the rear side of the heating box 1, a circle of sealing ring 21 is arranged in the edge of the box door 101, for enhancing the sealing property of box door 101, prevent air leakage, ensure that the environment in the heating box 1 is stable, first purification cavity, second purification cavity and heating cavity are sequentially arranged in the inside of the heating box 1 from left to right, three cavities are communicated with each other, wherein, air inlet is opened in the first purification cavity, for introducing air, mounting frame 6 is arranged in the first purification cavity, limit frame 4 is clamped on the mounting frame 6, limit frame 4 and mounting frame 6 are fixed by buckle 7, limit frame 4 and mounting frame 6 can be unlocked by pulling down buckle 7, stainless steel wire mesh filter plate 5 is installed in the limit frame 4, for preliminary filtering entering air, remove particulate matter in air, handle 8 is equipped in the top of limit frame 4, square groove is arranged in the top of the first purification cavity, handle 8 is exposed from square groove, it is convenient for operator to pull out stainless steel wire mesh filter plate 5 and clean, activated carbon filter plate 2 is installed in the inner wall of the second purification cavity, further purify air after being treated by first purification cavity, remove harmful substances and peculiar smell, electric heating plate 3 is arranged around in the inside of the heating cavity, for heating air after being purified, temperature controller 301 is arranged in the top of the heating cavity, temperature controller 301 is connected with electric heating plate 3 by wire, for monitoring temperature change in the heating cavity and adjusting electric heating plate 3 heating power, air outlet is also opened in the heating cavity, for discharging air after being heated, heat-conducting pipe 22 is arranged in the inside of the heating cavity in the form of snake, heat-conducting pipe 22 is made of metal material as a whole, for increasing the contact area of heat and air, so that heat can be more evenly transmitted to entire heating cavity to heat air, improve heating effect and shorten heating time.

[0022] When the mechanism is in use, first, external air or recycled hot air is introduced into the heating box 1 through the air inlet on the first purification cavity. When the air passes through the stainless steel mesh, larger particulate matter and other impurities are effectively blocked and collected, achieving preliminary purification of the air. Subsequently, the air that has undergone preliminary purification enters the second purification cavity. The activated carbon filter plate 2 has strong adsorption capacity and can further remove small particles, toxic and harmful chemical gases in the air, avoiding the deposition of particulate matter in the air on the surface of the diaphragm, which affects the uniformity and integrity of the coating layer, and also ensures the safety and health of the operating environment. Then, the deeply purified air enters the rightmost heating cavity. Under the control of the temperature controller 301, the electric heating plate 3 uniformly heats the air. At the same time, the temperature controller 301 monitors the temperature in the heating cavity in real time and adjusts the working state of the electric heating plate 3 according to the set value to maintain a stable heating temperature. The heated clean air is discharged through the air outlet on the heating cavity and used for the coating process of the lithium battery oil PVDF diaphragm, providing a controlled environment that helps improve the quality and efficiency of the coating. The air after completing the drying task can be recycled through the exhaust pipe 16 and introduced into the heating box 1 for purification and heating again, forming a closed-loop system to reduce energy waste and environmental pollution.

[0023] Example 2: Based on Example 1, please refer to Figure 3 The left side of the first purification cavity is provided with a water tank 9, which stores alkaline solution inside to remove particulate matter and part of acid and alkaline gases in the exhaust air. A water pump 10 is installed on the left side of the water tank 9. The water inlet end of the water pump 10 communicates with the water tank 9. One end of a water delivery pipe 11 is connected to the water outlet end of the water pump 10. A spray head 12 is installed on the top of the first purification cavity. The spray head 12 is connected to the other end of the water delivery pipe 11. A one-way valve 13 is installed on the spray head 12 to ensure that liquid can only be sprayed out of the spray head 12 and cannot flow back. One end of a drain pipe 14 is connected to the bottom of the first purification cavity. The other end of the drain pipe 14 extends to the outside of the heating box 1. A valve 15 is installed on the drain pipe 14 to control the discharge of wastewater.

[0024] To further remove particulate matter and acid and alkaline gases in the air, when the air enters the heating box 1, the water pump 10 delivers the alkaline solution in the water tank 9 to the spray head 12 through the water delivery pipe 11. The spray head 12 uniformly sprays the alkaline solution into the air in the first purification cavity, reacts with the particulate matter and acid and alkaline gases in the air, and achieves deeper preliminary purification, further improving the air purification effect. The wastewater after the spray treatment is collected through the drain pipe 14. When it is necessary to discharge the wastewater, the valve 15 on the drain pipe 14 is opened, and the wastewater can be discharged outside the heating box 1, ensuring the cleanliness of the internal environment.

[0025] Please refer to Figure 3The heating cavity top is connected with an exhaust pipe 16, the electromagnetic valve 17 is installed on the exhaust pipe 16, the heating cavity top is further installed with a temperature and pressure sensor 18, the temperature and pressure sensor 18 is electrically connected with the electromagnetic valve 17, for monitoring the temperature and pressure in the heating cavity in real time, and controlling the electromagnetic valve 17 to open and close.

[0026] In the air heating process, when the temperature and pressure sensor 18 detects that the temperature or pressure in the heating cavity exceeds the preset safety range, the sensor sends a signal to the electromagnetic valve 17, so that the electromagnetic valve 17 is automatically opened to release the excessive pressure or exhaust the overheated air, so as to ensure the stability and safety of the environment in the heating cavity, effectively prevent the pressure in the heating cavity from being too high, avoid the equipment damage or safety accidents caused by the excessive pressure, and prevent the temperature in the heating cavity from being too high, avoid the melting, combustion or other dangerous situations of the diaphragm material caused by the out-of-control temperature.

[0027] Please refer to Figure 4 The heating box 1 rear side is provided with left and right symmetrical distribution screw cylinders 19, the screw cylinders 19 are screw-threaded with screw rods 20, the screw rods 20 are provided with fixed blocks 2001 for fixing the box door 101.

[0028] When the box door 101 needs to be opened, the screw rod 20 is counterclockwise rotated, under the guidance of the screw cylinder 19, the screw rod 20 drives the fixed block 2001 to move linearly and contact with the box door 101, when the box door 101 is closed, the screw rod 20 is clockwise rotated, the screw rod 20 drives the fixed block 2001 to reset and press the box door 101, so as to realize the firm fixation of the box door 101, ensure that it does not move in the working process, ensure the stability of the environment in the heating box 1, avoid the mixing of external air and the leakage of internal gas.

[0029] The above embodiment is only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent change or modification according to the spirit and essence of the present application should be covered in the protection scope of the present application.

Claims

1. A heating pack mechanism for a lithium battery oil-based PVDF separator coating machine, comprising a heating box (1), wherein a door (101) is provided on the rear side of the heating box (1), and the heating box (1) contains, from left to right, a first purification chamber, a second purification chamber, and a heating chamber, the three chambers being interconnected, characterized in that: wherein, An air inlet is provided on the first purification chamber. An installation frame (6) is provided inside the first purification chamber. A limiting frame (4) is snapped onto the installation frame (6). The limiting frame (4) and the installation frame (6) are fixed together by a buckle (7). A stainless steel wire mesh filter plate (5) is installed inside the limiting frame (4). A handle (8) is provided at the top of the limiting frame (4). A square groove is provided at the top of the first purification chamber. The handle (8) protrudes from the square groove. An activated carbon filter plate (2) is installed on the inner wall of the second purification chamber. An electric heating plate (3) is arranged around the inside of the heating chamber. A thermostat (301) is provided at the top of the heating chamber. The thermostat (301) is connected to the electric heating plate (3) through a wire. An air outlet is also provided on the heating chamber.

2. The heating pack mechanism of the lithium battery oil-based PVDF separator coating machine as described in claim 1, characterized in that: A water tank (9) is provided on the side of the first purification chamber. A water pump (10) is installed on one side of the water tank (9). The water inlet of the water pump (10) is connected to the water tank (9). The water outlet of the water pump (10) is connected to one end of a water supply pipe (11). A nozzle (12) is installed on the top of the first purification chamber. The nozzle (12) is connected to the other end of the water supply pipe (11). A one-way valve (13) is installed on the nozzle (12). One end of a drain pipe (14) is connected to the bottom of the first purification chamber. The other end of the drain pipe (14) extends to the outside of the heating box (1). A valve (15) is installed on the drain pipe (14).

3. The heating pack mechanism of the lithium battery oil-based PVDF separator coating machine as described in claim 2, characterized in that: An exhaust pipe (16) is connected to the top of the heating chamber. A solenoid valve (17) is installed on the exhaust pipe (16). A temperature and pressure sensor (18) is also installed on the top of the heating chamber. The temperature and pressure sensor (18) is electrically connected to the solenoid valve (17).

4. The heating pack mechanism of the lithium battery oil-based PVDF separator coating machine as described in claim 3, characterized in that: The heating box (1) is provided with symmetrically distributed threaded cylinders (19) on the rear side. The threaded cylinders (19) are provided with screws (20) in a threaded manner. The screws (20) are provided with fixing blocks (2001).

5. The heating pack mechanism of the lithium battery oil-based PVDF separator coating machine as described in claim 4, characterized in that: A sealing ring (21) is provided around the edge of the box door (101).

6. The heating pack mechanism of the lithium battery oil-based PVDF separator coating machine as described in claim 5, characterized in that: The heating chamber is equipped with heat-conducting pipes (22) arranged in a serpentine pattern.

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