A vacuum drying apparatus

Abstract

The utility model discloses a vacuum drying equipment, including vacuum drying box still includes: be located in the vacuum drying box in, and be used for the drive support of supporting material, the drive support is openwork frame structure to can carry material and move in the vacuum drying box periphery. The utility model discloses through setting up the drive support for supporting lithium battery material and being openwork frame structure in the vacuum drying box, makes lithium battery material each face all expose to dry environment, and this drive support can carry material and move in the periphery in the box, so that material can change position constantly in the drying process, avoids the problem of partial drying insufficiency caused by fixed stacking, improves the uniformity of material drying, thereby improves the drying effect and product quality.

Description

Technical Field

[0001] This utility model relates to the technical field of battery drying equipment, and in particular to a vacuum drying device. Background Technology

[0002] As a key piece of equipment in the lithium battery manufacturing process, the core function of lithium battery vacuum drying equipment is to perform vacuum drying of lithium battery materials or cells. During lithium battery production, moisture has a significant negative impact on battery performance, such as reducing capacity, increasing internal resistance, and shortening cycle life. Therefore, the moisture content in lithium battery materials must be controlled at an extremely low level.

[0003] The principle of vacuum drying is based on the fact that the boiling point of water decreases significantly under negative pressure. When the air pressure decreases and the temperature increases, the vaporization rate of water increases dramatically, and the vaporization process becomes more thorough. Lithium battery vacuum drying equipment cleverly utilizes this physical principle, placing lithium battery materials in a negative pressure, high-temperature environment to promote rapid vaporization and extraction of moisture, thereby achieving rapid drying and ensuring the quality and performance of the lithium batteries.

[0004] However, existing lithium battery vacuum drying equipment faces several problems in practical use that urgently need to be addressed. Currently, the common operating method involves stacking multiple lithium battery materials in a vacuum drying chamber. However, this stacking method causes the materials to block each other, making it difficult for heat and airflow in the vacuum environment to reach the bottom of each material evenly. As a result, the moisture at the bottom of the lithium battery cannot be fully vaporized and discharged, leading to incomplete drying. This, in turn, affects the overall quality and performance stability of the lithium battery, increases the defect rate, and raises production costs. Utility Model Content

[0005] In view of the aforementioned problems with existing lithium battery drying methods, this paper aims to provide a vacuum drying device.

[0006] The specific technical solution is as follows:

[0007] A vacuum drying device includes a vacuum drying chamber and a drive support disposed inside the vacuum drying chamber for supporting materials. The drive support has a hollow frame structure and can carry materials to move circumferentially inside the vacuum drying chamber.

[0008] As a further improvement and optimization of this solution, the drive support includes: multiple drying racks, which are distributed circumferentially, each of which is a hollow frame structure, and the multiple drying racks can move synchronously circumferentially.

[0009] As a further improvement and optimization of this solution, each of the drying racks is a multi-layer hollow frame structure.

[0010] As a further improvement and optimization of this solution, a drive mechanism is provided inside the vacuum drying oven. The drive mechanism is connected to multiple drying racks for driving the multiple drying racks to move synchronously in the circumferential direction.

[0011] As a further improvement and optimization of this solution, the driving mechanism includes:

[0012] Multiple suspension rods, with the tops of the multiple drying racks rotatably fitted onto the outside of the multiple suspension rods;

[0013] A drive assembly is connected to a plurality of suspension rods for driving the plurality of suspension rods to move synchronously in the circumferential direction, thereby causing the plurality of drying racks to move synchronously in the circumferential direction.

[0014] As a further improvement and optimization of this solution, the drive assembly includes: two drive components and a drive element, wherein the two drive components are distributed on both sides of the plurality of suspension rods, and each drive component includes:

[0015] Multiple transfer wheels are rotatably mounted inside the vacuum drying oven and distributed circumferentially.

[0016] A transmission belt, which is wound around the outside of the plurality of transmission pulleys;

[0017] The driving component is connected to one of the transmission wheels to drive the transmission wheel to rotate, and the two ends of the plurality of suspension rods are respectively connected to the two transmission belts.

[0018] As a further improvement and optimization of this solution, the driving component is a drive motor.

[0019] As a further improvement and optimization of this solution, each of the transmission wheels is a gear structure, and a toothed ring is formed on the inner side of the transmission belt, with multiple transmission wheels meshing with the toothed ring.

[0020] As a further improvement and optimization of this solution, each of the transmission belts has multiple shaft seats formed on its outer surface, and the ends of the multiple suspension rods are connected to the multiple shaft seats.

[0021] As a further improvement and optimization of this solution, each of the drying racks has a sleeve at the top, which is rotatably fitted over the outside of the suspension rod.

[0022] The positive effects of the above technical solution compared with the existing technology are:

[0023] (1) This utility model provides a drive bracket with a hollow frame structure for supporting lithium battery materials in a vacuum drying oven, so that all sides of the lithium battery materials are exposed to the drying environment. The drive bracket can carry the materials to move circumferentially in the oven, so that the materials can continuously change position during the drying process, avoiding the problem of insufficient drying in some areas due to fixed stacking, improving the uniformity of material drying, and thus improving the drying effect and product quality.

[0024] (2) The design of multiple drying racks distributed circumferentially and moving synchronously increases the space and quantity of lithium battery materials, improves the drying efficiency of the equipment, and ensures that all lithium battery materials can enjoy a similar drying environment, further guaranteeing the uniformity of drying.

[0025] (3) Each drying rack of this utility model is a multi-layer hollow frame structure. The design of the multi-layer hollow frame structure provides more material placement layers in a limited space, further improving the space utilization and drying efficiency of the equipment. The hollow structure is conducive to the circulation of heat and airflow, so that the upper and lower surfaces of the material can fully contact the drying medium and enhance the drying effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a vacuum drying device according to the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of a vacuum drying device according to the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of a drive support for a vacuum drying device according to the present invention;

[0029] Figure 4 This is a schematic diagram of the drive mechanism of a vacuum drying device according to the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of a drying rack in a vacuum drying device according to the present invention;

[0031] Figure 6 This utility model relates to a vacuum drying device. Figure 3 Enlarged view of point A in the middle;

[0032] In the attached diagram: 1. Vacuum drying oven; 2. Drive bracket; 3. Drive mechanism; 11. Opening and closing door; 21. Drying rack; 31. Drive component; 32. Drive element; 33. Suspension rod; 211. Sleeve; 311. Transmission wheel; 312. Transmission belt; 313. Mounting bracket; 3121. Shaft seat; 3122. Gear ring. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.

[0036] Figure 1 This is a schematic diagram of the structure of a vacuum drying device according to the present invention. Figure 2 This is a schematic diagram of the internal structure of a vacuum drying device according to the present invention. Figure 3 This is a schematic diagram of the drive support structure of a vacuum drying device according to this utility model. Figure 4 This is a schematic diagram of the drive mechanism of a vacuum drying device according to the present invention. Figure 5 This is a schematic diagram of the drying rack of a vacuum drying device according to this utility model. Figure 6 This utility model relates to a vacuum drying device. Figure 3 Enlarged diagram of point A in the middle, as shown below. Figure 1-6The diagram illustrates a preferred embodiment of a vacuum drying apparatus, comprising a vacuum drying chamber 1 and a drive support 2 disposed within the vacuum drying chamber 1 for supporting materials. The drive support 2 has a hollow frame structure and can carry the materials circumferentially within the vacuum drying chamber 1. By providing the drive support 2 with a hollow frame structure for supporting lithium battery materials within the vacuum drying chamber 1, all surfaces of the lithium battery materials are exposed to the drying environment. Furthermore, the drive support 2's ability to carry the materials circumferentially within the chamber allows the materials to continuously change position during the drying process, avoiding the problem of insufficient drying in certain areas caused by fixed stacking. This improves the uniformity of material drying, thereby enhancing the drying effect and product quality.

[0037] Furthermore, as a preferred embodiment, the drive support 2 includes multiple drying racks 21 distributed circumferentially, each drying rack 21 being a hollow frame structure, and the multiple drying racks 21 capable of synchronous movement along the circumference. This design of multiple circumferentially distributed and synchronously moving drying racks 21 increases the placement space and quantity of lithium battery materials, improving the drying efficiency of the equipment. Simultaneously, the synchronous movement ensures that all lithium battery materials enjoy a similar drying environment, further guaranteeing the uniformity of drying.

[0038] Furthermore, as a preferred embodiment, each drying rack 21 is a multi-layered perforated frame structure. This multi-layered perforated frame structure provides more material placement layers within a limited space, further improving the space utilization and drying efficiency of the equipment. The perforated structure facilitates the flow of heat and airflow, ensuring that both the upper and lower surfaces of the material are in full contact with the drying medium, thus enhancing the drying effect.

[0039] Specifically, each drying rack 21 has multiple placement slots formed on one side from top to bottom for placing battery materials. The four sides of each placement slot have a hollow structure. The design of the placement slots facilitates the accurate placement and fixation of battery materials, preventing the materials from shifting or falling during movement. The hollow structure of the four sides optimizes the heat and airflow transfer path, creating a good drying environment around the materials and ensuring that the drying process is efficient and uniform.

[0040] Furthermore, as a preferred embodiment, a drive mechanism 3 is provided inside the vacuum drying oven 1. The drive mechanism 3 is connected to multiple drying racks 21 for synchronous circumferential movement. The drive mechanism 3 provides power support for the movement of the drying racks 21. By being connected to multiple drying racks 21 for transmission, the speed and rhythm of the drying racks 21 can be precisely controlled to achieve synchronous circumferential movement, ensuring the consistency and stability of the material drying process.

[0041] Furthermore, in a preferred embodiment, the drive mechanism 3 includes multiple suspension rods 33 and a drive assembly. The tops of the multiple drying racks 21 are rotatably fitted onto the outside of the multiple suspension rods 33. The drive assembly is connected to the multiple suspension rods 33 for driving the multiple suspension rods 33 to move synchronously in the circumferential direction, thereby causing the multiple drying racks 21 to move synchronously in the circumferential direction. By setting multiple suspension rods 33 and a drive assembly, the tops of the multiple drying racks 21 are rotatably fitted onto the outside of the corresponding suspension rods 33, and the drive assembly can drive the multiple suspension rods 33 to move synchronously in the circumferential direction, thereby driving the multiple drying racks 21 to rotate synchronously in the circumferential direction. During this process, the rotational cooperation between the drying racks 21 and the suspension rods 33 ensures that the drying racks 21 always remain in a vertically suspended state, effectively ensuring the stability of the battery when drying on the drying racks 21.

[0042] Furthermore, in a preferred embodiment, the drive assembly includes two drive components 31 and a drive element 32. The two drive components 31 are distributed on both sides of a plurality of suspension rods 33. Each drive component 31 includes a plurality of transmission wheels 311 and a transmission belt 312. The plurality of transmission wheels 311 are rotatably mounted inside the vacuum drying oven 1 and distributed circumferentially. The transmission belt 312 is wound around the outside of the plurality of transmission wheels 311. The drive element 32 is connected to one of the transmission wheels 311 for driving the transmission wheel 311 to rotate. The two ends of the plurality of suspension rods 33 are respectively connected to the two transmission belts.

[0043] Specifically, the multiple transmission wheels 311 in each driving component 31 are distributed in a rectangular structure, but are not limited to this distribution method; they can also be distributed in a circular structure.

[0044] Furthermore, as a preferred embodiment, the driving component 32 is a drive motor. Drive motors have advantages such as stable power output, high control precision, and reliable operation. Choosing a drive motor as the driving component 32 provides continuous and stable power to the entire drive mechanism 3, ensuring that the drying rack 21 moves at a predetermined speed and rhythm, thereby guaranteeing the quality and stability of the material drying process.

[0045] Specifically, each drive component 31 also includes a mounting frame 313, on which multiple conveying wheels are rotatably mounted, and a drive motor is mounted on one of the mounting frames 313. The mounting frame 313 provides a stable mounting base for the conveying wheels 311 and the drive motor, ensuring the relative positional accuracy between the components and reducing vibration and noise during operation. Simultaneously, mounting the drive motor on the mounting frame 313 facilitates equipment assembly, debugging, and maintenance, improving the overall reliability and maintainability of the equipment.

[0046] Furthermore, in a preferred embodiment, each transmission wheel 311 is a gear structure, and a toothed ring 3122 is formed on the inner side of the transmission belt 312. All transmission wheels 311 mesh with the toothed ring 3122. The transmission method employing a gear structure and meshing toothed ring 3122 primarily aims to increase the friction between the transmission wheels 311 and the transmission belt 312, thereby significantly improving transmission stability and effectively preventing slippage of the transmission belt 312 during operation, ensuring the efficiency and reliability of power transmission.

[0047] Furthermore, in a preferred embodiment, each conveyor belt 312 has multiple shaft seats 3121 formed on its outer surface, and the ends of multiple suspension rods 33 are connected to the multiple shaft seats 3121. The shaft seats 3121 on the outer surface of the conveyor belt 312 provide stable connection points for the suspension rods 33, ensuring a firm and reliable connection between the suspension rods 33 and the conveyor belt 312. This connection method facilitates installation and disassembly, makes equipment maintenance and repair convenient, and also ensures the stability of the drying rack 21 during operation.

[0048] Specifically, each shaft seat 3121 is provided with a mounting hole, and the end of the suspension rod 33 is connected to the mounting hole. The design of the mounting hole makes the connection between the suspension rod 33 and the shaft seat 3121 more precise and stable, effectively preventing the suspension rod 33 from loosening or falling off during movement, ensuring the smoothness and safety of the movement of the drying rack 21. At the same time, this connection method also facilitates installation and adjustment, improving the assembly efficiency of the equipment.

[0049] Furthermore, as a preferred embodiment, each drying rack 21 has a sleeve 211 at its top, which is rotatably fitted onto the outside of the suspension rod 33. This rotatable connection method can adapt to the angular changes of the drying rack 21 during circumferential movement, ensuring that the drying rack 21 is always in a stable movement state, thus improving the reliability and stability of equipment operation.

[0050] Furthermore, the front of the vacuum drying oven 1 has an opening, and a rotatably connected opening and closing door 11 is fitted into the opening, facing the slot of the placement groove on each drying rack 21. The opening and opening / closing door 11 on the front of the vacuum drying oven 1 facilitate the loading and unloading of materials, improving production efficiency. The design of the opening facing the slot allows operators to load and unload materials more intuitively and conveniently, reducing operational difficulty and time. Simultaneously, the rotatably connected opening and closing door 11 has good sealing performance, effectively ensuring the vacuum environment inside the vacuum drying oven 1 and ensuring the smooth progress of the drying process.

[0051] Even better, in order to improve the sealing between the door 11 and the opening when it is closed, a sealing ring can also be installed on the contact surface between the door 11 and the opening.

[0052] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum drying apparatus, comprising a vacuum drying chamber, characterized in that, Also includes: A drive support is installed inside the vacuum drying oven and used to support the material. The drive support has a hollow frame structure and can carry the material to move circumferentially inside the vacuum drying oven.

2. The vacuum drying equipment according to claim 1, characterized in that, The drive support includes: multiple drying racks, which are distributed circumferentially, each drying rack being a hollow frame structure, and the multiple drying racks being able to move synchronously circumferentially.

3. The vacuum drying equipment according to claim 2, characterized in that, Each of the aforementioned drying racks is a multi-layered hollow frame structure.

4. The vacuum drying equipment according to claim 2, characterized in that, The vacuum drying oven is equipped with a drive mechanism, which is connected to multiple drying racks for driving the multiple drying racks to move synchronously in a circumferential direction.

5. The vacuum drying equipment according to claim 4, characterized in that, The drive mechanism includes: Multiple suspension rods, with the tops of the multiple drying racks rotatably fitted onto the outside of the multiple suspension rods; A drive assembly is connected to a plurality of suspension rods for driving the plurality of suspension rods to move synchronously in the circumferential direction, thereby causing the plurality of drying racks to move synchronously in the circumferential direction.

6. The vacuum drying equipment according to claim 5, characterized in that, The drive assembly includes: two drive components and a drive element, wherein the two drive components are distributed on both sides of the plurality of suspension rods, and each drive component includes: Multiple transfer wheels are rotatably mounted inside the vacuum drying oven and distributed circumferentially. A transmission belt, which is wound around the outside of the plurality of transmission pulleys; The driving component is connected to one of the transmission wheels to drive the transmission wheel to rotate, and the two ends of the plurality of suspension rods are respectively connected to the two transmission belts.

7. The vacuum drying equipment according to claim 6, characterized in that, The driving component is a drive motor.

8. The vacuum drying equipment according to claim 6, characterized in that, Each of the transmission wheels is a gear structure, and a toothed ring is formed on the inner side of the transmission belt. All of the transmission wheels mesh with the toothed ring.

9. The vacuum drying equipment according to claim 6, characterized in that, Each of the transmission belts has a plurality of shaft seats formed on its outer surface, and the ends of the plurality of suspension rods are connected to the plurality of shaft seats.

10. The vacuum drying equipment according to claim 5, characterized in that, Each of the drying racks has a sleeve at the top, which is rotatably fitted over the outside of the suspension rod.

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