Decompression drying box for processing lithium battery diaphragm material

Abstract

The utility model discloses a decompression drying box for processing a lithium battery diaphragm material, which belongs to the technical field of decompression drying boxes and comprises a box body and a drying mechanism positioned on the box body, a heating chamber is formed on the bottom wall of an inner cavity of the box body, and the drying mechanism comprises an electric heating wire fixedly mounted in the heating chamber. Wherein the electric heating wire needs to be powered by an external electric power facility, a servo motor is horizontally installed on one side wall of the box body, inner supporting shafts are rotationally connected to the two sides of an inner cavity of the box body respectively, an output shaft of the servo motor is coaxially connected with one inner supporting shaft, wheel discs are welded to the opposite sides of the two inner supporting shafts respectively, and the wheel discs are connected with the servo motor. A plurality of supporting rods are rotationally connected between the two wheel discs, two sleeves are fixedly welded to each supporting rod, and connecting rods are welded to the lower portions of the two sleeves on each supporting rod. According to the decompression drying box for processing the lithium battery diaphragm materials, the lithium battery diaphragm materials on the storage trays with different heights are heated more uniformly, and the drying effect is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of reduced pressure drying ovens, and in particular relates to a reduced pressure drying oven for processing lithium battery diaphragm materials. Background Art

[0002] In the structure of lithium batteries, the diaphragm material is one of the key internal components. Its main function is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. The performance of lithium battery diaphragms determines the battery's interface structure, internal resistance and other parameters, which directly affects the battery's capacity, cycle and safety performance.

[0003] In the process of realizing the utility model, the inventor found that there are at least the following problems in the technology: the process of processing lithium battery diaphragm materials involves drying of the materials. At present, in order to ensure a clean and tidy drying environment and temperature control, the materials are often dried in a reduced pressure drying box. However, when heating in such a reduced pressure drying box, the heating conditions (heat received per unit time) of lithium battery diaphragm materials at different heights in the box are usually different, resulting in uneven heating effects of lithium battery diaphragm materials at different heights and poor drying effects.

[0004] To this end, we proposed a vacuum drying oven for processing lithium battery diaphragm materials to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a reduced pressure drying box for processing lithium battery diaphragm materials, so that the heat released from the bottom of the box cavity can be released more evenly on the lithium battery diaphragm materials on each storage tray, so that the lithium battery diaphragm materials on storage trays of different heights are heated more evenly and the drying effect is better, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A vacuum drying box for processing lithium battery diaphragm materials, comprising a box body and a drying mechanism located on the box body, a heating chamber is formed on the bottom wall of the inner cavity of the box body, the drying mechanism comprises an electric heating wire fixedly installed in the heating chamber, wherein the electric heating wire needs to be powered by external power facilities, a servo motor is horizontally installed on one side wall of the box body, inner support shafts are rotatably connected to both sides of the inner cavity of the box body, and the output shaft of the servo motor is coaxially connected to one of the inner support shafts;

[0008] Wheel discs are welded on the sides of the two inner support shafts facing each other, and multiple support rods are rotatably connected between the two wheel discs. Two sleeves are fixedly welded on each support rod, and connecting rods are welded under the two sleeves on the support rods. Placement trays for lithium battery diaphragm materials are welded to the bottom of the two connecting rods. A vacuum pump is installed on the box body, wherein the vacuum pump is connected to an exhaust pipe. The technical principle of the vacuum pump is the existing technology.

[0009] As a preferred embodiment, the inner cavity of the box is formed on one side wall thereof, and a side door is connected to the side where the inner cavity opening of the box is located via a hinge; and a handle is connected to the side door, through which the side door can be easily flipped.

[0010] As a preferred embodiment, the plurality of support rods between the two wheel discs are distributed in a circular array along the central axis of the inner support shaft, so that the storage trays on the plurality of support rods can be distributed at different positions in the inner cavity of the box.

[0011] As a preferred embodiment, a breathable mesh is fixedly installed on the bottom wall of each storage tray; the breathable mesh is designed to facilitate the passage of air and to facilitate better heating and drying of the lithium battery diaphragm material above the breathable mesh.

[0012] As a preferred embodiment, one end of the air outlet pipe passes through the top wall of the box and extends into the inner cavity of the box, and the other end thereof extends to the outside; thereby facilitating the extraction of air to the outside through the air outlet pipe to achieve vacuum conditions in the box.

[0013] As a preferred implementation scheme, a heat exhaust pipe is fixedly connected to one side of the top wall of the box body, and a fan is installed in the heat exhaust pipe; a valve is also installed on the heat exhaust pipe, and the servo motor and the fan need to be powered by an external power supply.

[0014] In summary, the technical effects and advantages of the utility model are as follows:

[0015] The vacuum drying box for processing lithium battery diaphragm materials drives the two wheel discs and the multiple support rods therebetween to operate by driving a servo motor, so that the storage trays on the multiple support rods are in a state of slowly and evenly turning over, so that the heat released from the bottom of the box cavity can be released more evenly to the lithium battery diaphragm materials on each storage tray, so that the lithium battery diaphragm materials on the storage trays at different heights are heated more evenly and the drying effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a vertical cross-sectional view of the utility model;

[0018] Figure 3It is a structural schematic diagram of one side of the storage tray of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the other side of the storage tray of the utility model.

[0020] In the figure: 1. Box body; 2. Side door; 3. Heating chamber; 4. Heating wire; 5. Servo motor; 6. Inner support shaft; 7. Wheel; 8. Support rod; 9. Sleeve; 10. Connecting rod; 11. Storage tray; 12. Breathable mesh plate; 13. Vacuum pump; 14. Exhaust pipe; 15. Heat exhaust pipe; 16. Fan; 17. Valve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 4 A vacuum drying box for processing lithium battery diaphragm materials, comprising a box body 1 and a drying mechanism located on the box body 1, wherein the inner cavity of the box body 1 is formed on one side wall thereof, and a side door 2 is connected to the side where the inner cavity opening of the box body 1 is located by a hinge, and a handle is connected to the side door 2, and the side door 2 can be conveniently turned over by the handle;

[0023] A heating chamber 3 is formed on the bottom wall of the inner cavity of the box body 1, and the drying mechanism includes an electric heating wire 4 fixedly installed in the heating chamber 3, wherein the electric heating wire 4 needs to be powered by external power facilities, and a servo motor 5 is horizontally installed on one side wall of the box body 1, and inner support shafts 6 are rotatably connected to both sides of the inner cavity of the box body 1, and the output shaft of the servo motor 5 is coaxially connected to one of the inner support shafts 6;

[0024] Wheel discs 7 are welded on the opposite sides of the two inner support shafts 6, and a plurality of support rods 8 are rotatably connected between the two wheel discs 7. Two sleeves 9 are fixedly welded on each support rod 8, and connecting rods 10 are welded below the two sleeves 9 on the support rod 8. A storage tray 11 for placing lithium battery diaphragm materials is welded at the bottom of the two connecting rods 10. The plurality of support rods 8 between the two wheel discs 7 are distributed in a circular array along the central axis of the inner support shaft 6, so that the storage trays 11 on the plurality of support rods 8 can be distributed at different positions of the inner cavity of the box body 1, and a breathable mesh plate 12 is fixedly installed on the bottom wall of each storage tray 11. The design of the breathable mesh plate 12 is to facilitate the passage of air and to facilitate better heating and drying of the lithium battery diaphragm material above the breathable mesh plate 12;

[0025] An air pump 13 is installed on the box body 1, wherein the air pump 13 is connected to an air outlet pipe 14. The technical principle of the air pump 13 is the existing technology. One end of the air outlet pipe 14 passes through the top wall of the box body 1 and extends into the inner cavity of the box body 1, and the other end thereof extends to the outside, so that it is convenient to extract air to the outside through the air outlet pipe 14 to achieve the vacuum condition in the box body 1. A heat exhaust pipe 15 is fixedly connected to one side of the top wall of the box body 1, and a fan 16 is installed in the heat exhaust pipe 15. A valve 17 is also installed on the heat exhaust pipe 15. The servo motor 5 and the fan 16 need to be powered by an external power supply.

[0026] The vacuum drying box for processing lithium battery diaphragm materials: when in use, first place the lithium battery diaphragm materials to be dried on a plurality of air-permeable mesh plates 12, turn the side door 2 along the hinge and close the opening of the inner cavity of the box body 1, then operate the vacuum pump 13 and use the air outlet pipe 14 to extract the air in the box body 1 (the valve 17 closes the heat exhaust pipe 15), so that the box body 1 becomes a vacuum environment, then energize the heating wire 4 to release heat in the box body 1, and dry the lithium battery diaphragm materials on the plurality of air-permeable mesh plates 12. During the drying process, the servo motor 5 is driven to operate. The two inner support shafts 6, the two wheel discs 7 and all the structures between the two wheel discs 7 (including multiple breathable mesh panels 12 and the lithium battery diaphragm materials thereon) are driven to turn over at a uniform and slow speed, so that the heat released from the bottom of the inner cavity of the box body 1 is more evenly accepted by the lithium battery diaphragm materials on the multiple breathable mesh panels 12, so that the drying effect of the lithium battery diaphragm materials in different breathable mesh panels 12 is more uniform; after drying, the valve 17 (optional electric control valve) opens the heat exhaust pipe 15, the fan 16 is powered on and runs to extract the heat in the box body 1, and then the lithium battery diaphragm material is taken out.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum drying box for processing lithium battery diaphragm materials, comprising a box body (1) and a drying mechanism located on the box body (1), characterized in that: The bottom wall of the inner cavity of the box body (1) is formed with a heating chamber (3), the drying mechanism comprises an electric heating wire (4) fixedly installed in the heating chamber (3), a servo motor (5) is horizontally installed on one side wall of the box body (1), and inner support shafts (6) are rotatably connected to the two sides of the inner cavity of the box body (1), and the output shaft of the servo motor (5) is coaxially connected to one of the inner support shafts (6); A wheel disc (7) is welded to the opposite sides of the two inner support shafts (6), and a plurality of support rods (8) are rotatably connected between the two wheel discs (7). Two sleeves (9) are fixedly welded to each support rod (8), and connecting rods (10) are welded below the two sleeves (9) on the support rod (8). A storage tray (11) for placing lithium battery diaphragm materials is welded to the bottom of the two connecting rods (10). An air pump (13) is installed on the box body (1), and an air outlet pipe (14) is connected to the air pump (13).

2. A vacuum drying oven for processing lithium battery diaphragm materials according to claim 1, characterized in that: The inner cavity of the box body (1) is formed on one side wall thereof, and the side where the inner cavity opening of the box body (1) is located is connected to a side door (2) via a hinge.

3. A vacuum drying oven for processing lithium battery diaphragm materials according to claim 1, characterized in that: A plurality of support rods (8) between the two wheel discs (7) are distributed in a circular array along the central axis of the inner support shaft (6).

4. A vacuum drying oven for processing lithium battery diaphragm materials according to claim 1, characterized in that: A breathable mesh plate (12) is fixedly mounted on the bottom wall of each storage tray (11).

5. The reduced pressure drying oven for processing lithium battery diaphragm materials according to claim 1, characterized in that: One end of the air outlet pipe (14) passes through the top wall of the box body (1) and extends into the inner cavity of the box body (1), and the other end thereof extends to the outside.

6. The reduced pressure drying oven for processing lithium battery diaphragm materials according to claim 1, characterized in that: A heat exhaust pipe (15) is fixedly connected to one side of the top wall of the box body (1), and a fan (16) is installed in the heat exhaust pipe (15).

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