Digital curing oven for solid-state electrolyte coating

Abstract

The utility model discloses a solid -state electrolyte coating's digital solidification box, including solidification box, the upper and lower of one side in the inside of solidification box is located the above and below of lithium battery diaphragm is provided with upper drying air duct and lower drying air duct respectively, and the bottom of upper drying air duct and the top of lower drying air duct all fixed mounting have heat -distribution cover, the inside of upper drying air duct and lower drying air duct all is provided with electric heating tube, one side in the inside of solidification box is located the upper surface and the lower surface of lithium battery diaphragm is provided with press roll and drive roll respectively, drive roll is by drive motor drive rotation, compared with prior art, the utility model discloses through setting up the drying air duct and heat -distribution cover symmetrical up and down, cooperate multilayer different mesh size's heat -distribution net, make hot -blast even spread, effectively solved the problem that traditional solidification box heated unevenly, local overheating, the pressure of press roll is ensured that diaphragm is stably transported in the solidification process with the self -adaptation adjustment of compacting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery separator production technology, specifically to a digital curing box for solid electrolyte coatings. Background Technology

[0002] In the production process of lithium battery separators, the coated separators need to be dried to remove moisture and ensure battery performance. Currently, the drying of lithium battery separators mainly adopts methods such as hot air drying and far-infrared radiation curing. However, although far-infrared radiation curing is more energy-efficient, it is prone to local overheating and uneven heating due to the different transmission positions of light waves. At the same time, traditional hot air drying does not have a good heat distribution structure, and the problem of uneven curing and drying effect still exists. To address this, this invention proposes a digital curing box for solid electrolyte coatings. Utility Model Content

[0003] The purpose of this invention is to provide a digital curing box for solid electrolyte coatings to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a digital curing box for solid electrolyte coatings, comprising a curing box, wherein an upper drying duct and a lower drying duct are respectively arranged on one side of the curing box above and below the lithium battery separator, and a heat spreader is fixedly installed at the bottom of the upper drying duct and the top of the lower drying duct. Electric heating tubes are arranged inside the upper drying duct and the lower drying duct. A pressure roller and a drive roller are respectively arranged on the upper and lower surfaces of the lithium battery separator on one side of the curing box, and the drive roller is driven to rotate by a drive motor.

[0005] As a preferred technical solution of this utility model, a movable groove is provided on the rear inner wall of the curing box, and a pressing mechanism is installed inside the movable groove. A rotating shaft is rotatably connected to the inner surface of the pressure roller, and the rotating shaft is installed at the bottom of the pressing mechanism.

[0006] As a preferred technical solution of this utility model, the pressing mechanism includes a movable block that is slidably installed in the movable groove, and a rotating shaft is rotatably installed at the front end of the movable block. A spring is connected to the upper end of the movable block, and the upper end of the spring is connected to the top inner wall of the movable groove.

[0007] As a preferred technical solution of this utility model, the number of upper drying air ducts and lower drying air ducts is multiple.

[0008] As a preferred technical solution of this utility model, both the upper drying duct and the lower drying duct are equipped with fans, and an electric heating tube is provided on the side of the fan near the lithium battery separator.

[0009] As a preferred technical solution of this utility model, the inner surface of the heat dissipation cover is fixedly connected with a first heat dissipation net, a second heat dissipation net and a third heat dissipation net arranged horizontally, and the first heat dissipation net is located on the side close to the lithium battery separator, and the second heat dissipation net is disposed between the first heat dissipation net and the third heat dissipation net.

[0010] As a preferred technical solution of this utility model, the upper end of the upper drying air duct and the lower end of the lower drying air duct are both fixedly connected to clean air pipes.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention relates to a digital curing chamber for solid electrolyte coatings. By setting up symmetrical drying ducts and heat spreaders, along with multiple layers of heat spreaders with different mesh sizes, it ensures uniform hot air diffusion, effectively solving the problems of uneven heating and localized overheating in traditional curing chambers. The pressing mechanism can adaptively adjust the pressure of the pressure rollers to ensure stable conveying of the diaphragm during the curing process. The clean air pipeline introduces pure gas to avoid dust contamination. Multiple sets of air ducts have a decreasing temperature gradient along the conveying direction to adapt to the temperature requirements of different curing stages, improving the curing quality and consistency of the diaphragm.

[0012] Other features and advantages of this invention will be described in detail in the following specific embodiments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the lower drying air duct of this utility model; Figure 3 This is a schematic diagram of the pressing mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the first heat exchanger of this utility model; Figure 5 This is a schematic diagram of the structure of the second heat exchanger of this utility model; Figure 6 This is a schematic diagram of the structure of the third heat exchanger network of this utility model.

[0014] In the diagram: 1. Curing box; 2. Lithium battery separator; 3. Lower drying duct; 4. Upper drying duct; 5. Heat spreader; 6. Clean air pipeline; 7. Drive roller; 8. Pressure roller; 9. Pressing mechanism; 10. Rotating shaft; 11. Movable groove; 13. Movable block; 14. Spring; 15. Fan; 16. Heating element; 17. First heat spreader; 18. Second heat spreader; 19. Third heat spreader. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] Please see Figures 1-6 In this embodiment, a digital curing box for solid electrolyte coating is provided, including a curing box 1. An upper drying duct 4 and a lower drying duct 3 are respectively arranged on one side of the curing box 1 above and below the lithium battery separator 2. A heat spreader 5 is fixedly installed at the bottom of the upper drying duct 4 and the top of the lower drying duct 3. Electric heating tubes 16 are arranged inside the upper drying duct 4 and the lower drying duct 3. A pressure roller 8 and a drive roller 7 are respectively arranged on the upper and lower surfaces of the lithium battery separator 2 on one side of the curing box 1. The drive roller 7 is driven to rotate by a drive motor.

[0019] In this embodiment, a movable groove 11 is provided on the rear inner wall of the curing box 1. A pressing mechanism 9 is installed inside the movable groove 11. A rotating shaft 10 is rotatably connected to the inner surface of the pressure roller 8, and the rotating shaft 10 is installed at the bottom of the pressing mechanism 9. The pressing mechanism 9 includes a movable block 13 slidably installed in the movable groove 11, and the rotating shaft 10 is rotatably installed at the front end of the movable block 13. A spring 14 is connected to the upper end of the movable block 13, and the upper end of the spring 14 is connected to the top inner wall of the movable groove 11. It should be noted that a winding device is provided at the end of the lithium battery separator 2. The lithium battery separator 2 can be wound up using a winding device, and the lithium battery separator 2 can be clamped well using a clamping mechanism 9, thereby improving the stability of the lithium battery separator 2 during the conveying and curing process. Since the clamping mechanism 9 is located near the outlet of the curing box 1, the surface of the lithium battery separator 2 has already been initially cured. Therefore, the clamping mechanism 9 will not cause adverse compression to the solid electrolyte coating on its surface. At the same time, it can adaptively clamp lithium battery separators 2 of different thicknesses to meet the curing requirements of lithium battery separators 2 of different specifications.

[0020] In this embodiment, a fan 15 is installed inside both the upper drying duct 4 and the lower drying duct 3, and an electric heating tube 16 is provided on the side of the fan 15 near the lithium battery separator 2. There are multiple upper drying ducts 4 and lower drying ducts 3. The preset temperature of the electric heating tubes 16 inside the multiple upper drying ducts 4 and lower drying ducts 3 along the conveying direction of the lithium battery separator 2 gradually decreases. Specifically, the upper drying ducts 4 and lower drying ducts 3 are electrically connected to the DCS control system. The heating temperature of the electric heating tube 16 inside each upper drying duct 4 and lower drying duct 3 is set on the DCS control system to control the surface temperature of the separator between 150°C and 110°C, so as to adapt to the drying temperature requirements of the separator at different positions and avoid the adverse effects caused by the excessively high surface temperature of the lithium battery separator 2 at the end of the conveying process.

[0021] In this embodiment, a first heat-spreading mesh 17, a second heat-spreading mesh 18, and a third heat-spreading mesh 19 are fixedly connected to the inner surface of the heat-spreading cover 5. The first heat-spreading mesh 17 is located on the side close to the lithium battery separator 2, and the second heat-spreading mesh 18 is disposed between the first heat-spreading mesh 17 and the third heat-spreading mesh 19. The mesh size of the first heat-spreading mesh 17, the second heat-spreading mesh 18, and the third heat-spreading mesh 19 gradually increases. By setting three heat-spreading meshes, the heated hot air can be well dispersed and output, so that the hot air can be output more evenly, which greatly improves the uniform curing and drying effect on the surface of the lithium battery separator 2.

[0022] In this embodiment, a clean air pipe 6 is fixedly connected to the upper end of the upper drying air duct 4 and the lower end of the lower drying air duct 3. The input end of the clean air pipe 6 is connected to a clean gas output main pipe. By using the clean air pipe 6, dust or other impurities in the hot air of curing and drying can be avoided, thereby preventing contamination of the surface of the lithium battery separator 2.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A digital curing chamber for solid electrolyte coatings, characterized in that, The device includes a curing chamber (1). Inside the curing chamber (1), an upper drying duct (4) and a lower drying duct (3) are respectively provided above and below the lithium battery separator (2). A heat spreader (5) is fixedly installed at the bottom of the upper drying duct (4) and the top of the lower drying duct (3). Electric heating tubes (16) are provided inside the upper drying duct (4) and the lower drying duct (3). A pressure roller (8) and a drive roller (7) are respectively provided on the upper and lower surfaces of the lithium battery separator (2) inside the curing chamber (1). The drive roller (7) is driven to rotate by a drive motor.

2. The digital curing chamber for solid electrolyte coating according to claim 1, characterized in that, The curing box (1) has a movable groove (11) on its rear inner wall. A pressing mechanism (9) is installed inside the movable groove (11). A rotating shaft (10) is rotatably connected to the inner surface of the pressure roller (8), and the rotating shaft (10) is installed at the bottom of the pressing mechanism (9).

3. The digital curing chamber for solid electrolyte coating according to claim 2, characterized in that, The pressing mechanism (9) includes a movable block (13) that is slidably installed in the movable groove (11), and a rotating shaft (10) is rotatably installed at the front end of the movable block (13). A spring (14) is connected to the upper end of the movable block (13), and the upper end of the spring (14) is connected to the top inner wall of the movable groove (11).

4. The digital curing chamber for the solid electrolyte coating according to claim 1, characterized in that, The number of the upper drying duct (4) and the lower drying duct (3) is multiple.

5. The digital curing chamber for the solid electrolyte coating according to claim 1, characterized in that, Both the upper drying duct (4) and the lower drying duct (3) are equipped with fans (15), and the fan (15) is provided with a heating tube (16) on the side near the lithium battery separator (2).

6. The digital curing chamber for the solid electrolyte coating according to claim 1, characterized in that, The inner surface of the heat spreader (5) is fixedly connected with a first heat spreader (17), a second heat spreader (18) and a third heat spreader (19) arranged horizontally. The first heat spreader (17) is located on the side close to the lithium battery separator (2), and the second heat spreader (18) is disposed between the first heat spreader (17) and the third heat spreader (19).

7. The digital curing chamber for solid electrolyte coating according to claim 1, characterized in that, The upper end of the upper drying duct (4) and the lower end of the lower drying duct (3) are both fixedly connected to clean air pipes (6).

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