Lithium battery diaphragm drying device capable of preventing edge warping

Abstract

The utility model discloses a lithium battery diaphragm drying device capable of preventing edge warping, and relates to the technical field of lithium battery diaphragm drying, the lithium battery diaphragm drying device comprises a drying box and a protection assembly, the top of the right side of the drying box is provided with a cooling fan, and the lower end of the cooling fan is provided with an air inducing frame; the protection assembly used for preventing edge warping of the film body is arranged in the right side of the drying box and comprises a flattening roller, a cooling plate, a water cooling box and a liquid inlet and outlet pipe, the cooling plate is arranged at the lower end of the flattening roller, and the water cooling box is arranged at the lower end of the cooling plate. According to the lithium battery diaphragm drying device capable of preventing edge warping, the cooling plate plays a role in cooling and shaping the dried lithium battery diaphragm, the flattening roller assists in flattening the lithium battery diaphragm, and subsequent edge warping deformation caused by waste heat of the lithium battery diaphragm is prevented; liquid circularly flows in the water cooling box through a liquid inlet and outlet pipe, so that the cooling plate is kept at a low temperature, and a cooling fan is arranged above to assist heat dissipation and cooling of the lithium battery diaphragm.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery separator drying, in particular to a lithium battery separator drying device for preventing warping of edges. Background Technique

[0002] As one of the four key materials of lithium batteries, the lithium battery separator is a material that connects and separates the positive and negative electrodes of the battery. It is an insulator of electrons, which can prevent short circuits, but allows lithium ions to pass through. It can also block the current conduction in the battery through the closed pore function when the battery is overheated. The quality of the separator determines the interface structure and internal resistance of the lithium battery, and then affects key characteristics such as the capacity, cycle life, charge and discharge current density of the battery. Therefore, the improvement of the separator performance is crucial for improving the comprehensive performance of the battery. The current production process steps of the separator mainly include: mixing raw materials and extruding, cooling, longitudinal / transverse stretching, extraction and punching, water washing process, drying treatment, heat setting and winding; usually, drying treatment requires a drying device.

[0003] For example, the utility model with the application number CN202122124335.2 discloses a lithium battery separator drying device. By setting a placement box body, an air inlet, a fan, an air heater, a vertical pipe, a horizontal pipe, a short pipe, an air outlet box, a roller, a water-absorbing cotton sleeve, a fixing ring, a filter plate, and an anti-slip block, the utility model solves the problem that the existing drying device has a poor drying effect. When drying the lithium battery separator, due to too much liquid adhered to the lithium battery separator, a large amount of water stains will be generated on the lithium battery separator after drying, resulting in a decline in the quality of the lithium battery separator; however, the existing lithium battery separator drying device is prone to have a temperature in the film body during drying and is prone to cause warping of the film body after drying, affecting subsequent use.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a lithium battery separator drying device for preventing warping of edges is provided. Content of the Utility Model

[0005] The purpose of the utility model is to provide a lithium battery separator drying device for preventing warping of edges to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A lithium battery separator drying device for preventing warping of edges, including a drying box and a protection component. A heat dissipation fan is installed at the top on the right side of the drying box, and an air guiding frame is arranged at the lower end of the heat dissipation fan. The protection component for preventing warping of the film body is arranged inside the right side of the drying box, and the protection component includes a flattening roller, a cooling plate, a water cooling box, and an inlet and outlet liquid pipe. The cooling plate is arranged at the lower end of the flattening roller, the water cooling box is arranged at the lower end of the cooling plate, and the inlet and outlet liquid pipe is arranged on the side of the water cooling box.

[0007] Further, three flattening rollers are provided, and the flattening rollers and the cooling plate are horizontally distributed.

[0008] Further, a partition plate is vertically installed inside the drying box, and a transmission hole is provided below the partition plate.

[0009] Further, mounting frames are installed at the left and right ends of the drying box, and transmission rollers are installed inside the mounting frames.

[0010] Further, a drying pipe is installed inside the left side of the drying box, and an air outlet is provided at the upper end of the drying pipe.

[0011] Further, a mounting rod is installed on the left side of the water cooling box, and an auxiliary component for auxiliary drying is connected to the end of the mounting rod.

[0012] Further, the auxiliary component includes an auxiliary plate and an air outlet, and air outlets are provided on the surface of the auxiliary plate.

[0013] Further, the auxiliary component further includes a mounting groove and an auxiliary roller. A mounting groove is provided on the upper surface of the auxiliary plate, and an auxiliary roller is installed inside the mounting groove.

[0014] The utility model provides a lithium battery separator drying device for preventing warping, which has the following beneficial effects:

[0015] 1. The utility model uses the cooling plate to cool and shape the lithium battery separator after drying. The flattening roller assists in flattening the lithium battery separator to prevent warping and deformation of the lithium battery separator due to residual heat. The liquid circulates inside the water cooling box through the liquid inlet and outlet pipes to keep the cooling plate at a lower temperature, and the radiator fan assists in cooling and heat dissipation of the lithium battery separator above.

[0016] 2. The utility model uses the partition plate to separate the drying chamber and the cooling chamber inside the drying box. The transmission roller assists in the entry and exit of the lithium battery separator in the drying box. The drying pipe is connected to the dryer at the rear end and continuously outputs hot air through the air outlet for drying treatment of the lithium battery separator. The auxiliary plate assists in keeping the lithium battery separator flat during drying on the upper and lower sides, avoiding the lithium battery separator swinging with the drying hot air, and the auxiliary roller assists in the smooth flow of the lithium battery separator inside the auxiliary plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of a lithium battery separator drying device for preventing warping according to the utility model;

[0018] Figure 2 is a schematic diagram of the overall internal sectional structure of a lithium battery separator drying device for preventing warping according to the utility model;

[0019] Figure 3Schematic diagram of the auxiliary component structure of a lithium battery separator drying device with anti-warping edge for the present utility model.

[0020] In the figure: 1, drying oven; 2, cooling fan; 3, air guiding frame; 4, protection component; 401, flattening roller; 402, cooling plate; 403, water cooling tank; 404, liquid inlet and outlet pipe; 5, partition plate; 6, transmission hole; 7, mounting bracket; 8, transmission roller; 9, drying pipe; 10, air outlet; 11, mounting rod; 12, auxiliary component; 1201, auxiliary plate; 1202, air outlet; 1203, mounting groove; 1204, auxiliary roller. Specific implementation mode

[0021] The following further describes the implementation mode of the present utility model in detail with reference to the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] As Figure 1 shown, a lithium battery separator drying device with anti-warping edge includes a drying oven 1 and a protection component 4. A cooling fan 2 is installed at the top on the right side of the drying oven 1. The cooling fan 2 assists in the heat dissipation and cooling of the lithium battery separator above, and an air guiding frame 3 is arranged at the lower end of the cooling fan 2. The protection component 4 for preventing the film body from warping is arranged inside the right side of the drying oven 1, and the protection component 4 includes a flattening roller 401, a cooling plate 402, a water cooling tank 403 and a liquid inlet and outlet pipe 404. A cooling plate 402 is arranged at the lower end of the flattening roller 401. The flattening roller 401 assists in flattening the lithium battery separator to prevent the lithium battery separator from having residual heat and causing subsequent warping and deformation. A water cooling tank 403 is arranged at the lower end of the cooling plate 402. Liquid circulates inside the water cooling tank 403 through the liquid inlet and outlet pipe 404 to keep the cooling plate 402 at a lower temperature. A liquid inlet and outlet pipe 404 is arranged on the side of the water cooling tank 403. The number of the flattening rollers 401 is three, and the flattening rollers 401 and the cooling plate 402 are horizontally distributed. The cooling plate 402 plays a role in cooling and shaping the lithium battery separator after drying. A partition plate 5 is vertically installed inside the drying oven 1. The partition plate 5 is used for separating the drying chamber and the cooling chamber inside the drying oven 1, and a transmission hole 6 is arranged below the partition plate 5.

[0023] As Figure 2 shown, mounting brackets 7 are installed at the left and right ends of the drying oven 1, and transmission rollers 8 are installed inside the mounting brackets 7. The transmission rollers 8 assist in the entry and exit of the lithium battery separator in the drying oven 1. A drying pipe 9 is installed inside the left side of the drying oven 1. The drying pipe 9 is connected to a dryer at the rear end and continuously outputs hot air through the air outlet 10 for drying the lithium battery separator, and an air outlet 10 is opened at the upper end of the drying pipe 9.

[0024] As Figure 3As shown, an installation rod 11 is installed on the left side of the water-cooled box 403, and an auxiliary component 12 for auxiliary drying is connected to the end of the installation rod 11. The auxiliary component 12 includes an auxiliary plate 1201 and an air outlet 1202, and the air outlet 1202 is formed on the surface of the auxiliary plate 1201. The auxiliary plate 1201 levels the lithium battery separator when drying it on the upper and lower sides, preventing the lithium battery separator from swinging with the hot air for drying. The auxiliary component 12 further includes an installation groove 1203 and an auxiliary roller 1204. The installation groove 1203 is formed on the upper surface of the auxiliary plate 1201, and the auxiliary roller 1204 is installed inside the installation groove 1203. The auxiliary roller 1204 assists the smooth flow of the lithium battery separator inside the auxiliary plate 1201.

[0025] In summary, for the lithium battery separator drying device with anti-warping edge, first, according to Figures 1 - 3 the structure shown in the figure, the processed lithium battery separator is drawn into the drying box 1, so that the lithium battery separator passes through the inside of the two auxiliary plates 1201. At the same time, the rear end of the drying pipe 9 is connected to a dryer and continuously outputs hot air through the air outlet 10 to dry the lithium battery separator. The auxiliary plate 1201 levels the lithium battery separator when drying it on the upper and lower sides to prevent the lithium battery separator from swinging with the hot air for drying. At the same time, the auxiliary roller 1204 assists the smooth flow of the lithium battery separator inside the auxiliary plate 1201. After drying, the lithium battery separator moves from the transmission hole 6 to the cooling plate 402. At this time, the liquid circulates inside the water-cooled box 403 through the liquid inlet and outlet pipe 404 to keep the cooling plate 402 at a relatively low temperature, so that the cooling plate 402 cools and shapes the lithium battery separator passing through after drying. At the same time, the flattening roller 401 assists in flattening the lithium battery separator to prevent the lithium battery separator from having residual heat and causing subsequent warping and deformation. The cooling fan 2 can also be turned on to assist in cooling and dissipating heat of the lithium battery separator above.

[0026] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present invention and its practical applications, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A drying device for a lithium battery separator to prevent warping, comprising a drying box (1) and a protection component (4), characterized in that, A heat dissipation fan (2) is installed at the top of the right side of the drying oven (1), and an air guiding frame (3) is arranged at the lower end of the heat dissipation fan (2). The protection component (4) for preventing the film body from warping is arranged inside the right side of the drying oven (1), and the protection component (4) includes a flattening roller (401), a cooling plate (402), a water cooling box (403) and an inlet and outlet liquid pipe (404). The cooling plate (402) is arranged at the lower end of the flattening roller (401), and the water cooling box (403) is arranged at the lower end of the cooling plate (402). The inlet and outlet liquid pipe (404) is arranged at the side of the water cooling box (403).

2. The drying device for a lithium battery separator with anti-warping edge according to claim 1, characterized in that, The number of the flattening rollers (401) is three, and the flattening rollers (401) and the cooling plate (402) are horizontally distributed.

3. A drying device for a lithium battery separator to prevent warping, characterized in that, A partition plate (5) is vertically installed inside the drying oven (1), and a transmission hole (6) is arranged below the partition plate (5).

4. The drying device for a lithium battery separator with anti-warping edges according to claim 1, characterized in that, Mounting frames (7) are installed at the left and right ends of the drying oven (1), and transmission rollers (8) are installed inside the mounting frames (7).

5. The drying device for a lithium battery separator with anti-warping edge according to claim 1, characterized in that, A drying pipe (9) is installed inside the left side of the drying oven (1), and an air outlet (10) is opened at the upper end of the drying pipe (9).

6. The drying device for a lithium battery separator with anti-warping edge according to claim 1, characterized in that, A mounting rod (11) is installed at the left side of the water cooling box (403), and an auxiliary component (12) for auxiliary drying is connected to the end of the mounting rod (11).

7. An anti-warping drying device for a lithium battery separator according to claim 6, wherein, The auxiliary component (12) includes an auxiliary plate (1201) and an air outlet (1202), and the air outlet (1202) is opened on the surface of the auxiliary plate (1201).

8. A lithium battery separator drying device for preventing warping according to claim 7, characterized in that, The auxiliary component (12) further includes a mounting groove (1203) and an auxiliary roller (1204). The mounting groove (1203) is opened on the upper surface of the auxiliary plate (1201), and the auxiliary roller (1204) is installed inside the mounting groove (1203).

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