Lithium battery diaphragm casting piece diaphragm back cooling device

Abstract

The utility model discloses a lithium battery diaphragm casting film back cooling device, which relates to the technical field of battery diaphragm production and comprises a control panel and a cooling component, an adjusting block is mounted on the outer side of the control panel, and the cooling component for simultaneously cooling two sides of a lithium battery diaphragm casting film is arranged on the inner side of the control panel. And the number of the cooling assemblies is two, each cooling assembly comprises a cooling box, a cooling groove, a cooling face and heat dissipation holes, the cooling grooves are formed in the cooling boxes, the cooling faces are arranged on the outer surfaces of the cooling boxes, and the heat dissipation holes are formed in the middles of the cooling boxes. According to the back cooling device for the lithium battery diaphragm casting film, the cooling surfaces on the symmetrically-distributed cooling boxes can play a role in simultaneously cooling the two surfaces of the passing lithium battery diaphragm casting film, the interior of the cooling tank is used for flowing of cooling liquid, and the cooling surfaces are cooled, so that the effect of cooling the lithium battery diaphragm casting film can be achieved; the heat dissipation holes cooperate with the heat dissipation fan and the ice cylinder to assist heat dissipation.

Description

Technical Field

[0001] The utility model relates to the technical field of battery separator production, in particular to a back cooling device for a lithium battery separator casting film. Background Technique

[0002] During the production of lithium battery separators, a molten mixture of polyolefin and paraffin oil flows from a die head onto a casting roll, forms a glassy film after being cooled by the casting roll, then undergoes biaxial synchronous stretching to form a thin film, then the paraffin oil is extracted, followed by transverse stretching, and finally a large roll of separator is formed through traction winding. The processed lithium battery separator casting film needs to be cooled by a cooling device.

[0003] However, the existing lithium battery separator casting films are usually cooled on one side through a cooling roller during cooling, which easily causes uneven temperatures on both sides of the die body and poor cooling effects.

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

[0005] The purpose of the utility model is to provide a back cooling device for a lithium battery separator casting film to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A back cooling device for a lithium battery separator casting film, including a control board and a cooling component. An adjusting block is installed on the outside of the control board, and the cooling component for simultaneously cooling both sides of the lithium battery separator casting film is arranged inside the control board, and the number of cooling components is set to two groups. The cooling component includes a cooling box, a cooling groove, a cooling surface, and heat dissipation holes. A cooling groove is opened inside the cooling box, and a cooling surface is arranged on the outer surface of the cooling box. Heat dissipation holes are arranged in the middle of the cooling box.

[0007] Further, the shape of the cooling box is annular, and the cooling box and the cooling groove are of an integrated structure.

[0008] Further, a cooling fan is arranged inside the heat dissipation hole, and an ice cylinder is arranged at the end of the heat dissipation hole.

[0009] Further, an adjusting component is arranged inside the adjusting block, and the number of adjusting components is set to two groups.

[0010] Further, the adjusting component includes a lead screw and a mounting frame, and a mounting frame is arranged at the end of the lead screw.

[0011] Further, a base is installed at the lower end of the mounting frame, and a connecting frame is installed on the outer surface of the base.

[0012] Furthermore, a first positioning roller is arranged inside the connecting frame, and a discharging rotating cylinder is arranged at the upper end inside the connecting frame.

[0013] Furthermore, a second positioning roller is arranged at the upper end inside the base, and a feeding rotating cylinder is arranged at the lower end inside the base.

[0014] The utility model provides a back cooling device for a lithium battery separator casting film, which has the following beneficial effects:

[0015] 1. In the utility model, the cooling surfaces on the symmetrically distributed cooling boxes can simultaneously cool the passing lithium battery separator casting film on both sides. The cooling grooves inside are used for the flow of the cooling liquid to cool the cooling surfaces so as to achieve the effect of cooling the lithium battery separator casting film, and the heat dissipation holes cooperate with the heat dissipation fans and ice cylinders to assist in heat dissipation.

[0016] 2. In the utility model, the screw rod is driven by the motor to control the movement of the adjusting block, that is, to adjust the distance between the cooling boxes, so that the cooling boxes can better approach the surface of the lithium battery separator casting film, resulting in good cooling effect. The first positioning roller keeps the film body flat when discharging, and the discharging rotating cylinder plays a role in adjusting the direction of the cooled film body. The discharging rotating cylinder keeps the film body flat when feeding, and the feeding rotating cylinder adjusts the direction of the film body when feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of a back cooling device for a lithium battery separator casting film of the utility model;

[0018] Figure 2 is the structural schematic diagram of the cooling component of a back cooling device for a lithium battery separator casting film of the utility model;

[0019] Figure 3 is the structural schematic diagram of the base - feeding rotating cylinder of a back cooling device for a lithium battery separator casting film of the utility model.

[0020] In the figure: 1. Control board; 2. Adjusting block; 3. Cooling component; 301. Cooling box; 302. Cooling groove; 303. Cooling surface; 304. Heat dissipation hole; 4. Heat dissipation fan; 5. Ice cylinder; 6. Adjusting component; 601. Screw rod; 602. Installation frame; 7. Base; 8. Connecting frame; 9. First positioning roller; 10. Discharging rotating cylinder; 11. Second positioning roller; 12. Feeding rotating cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

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

[0022] Such as Figure 1As shown in the figure, a back cooling device for a lithium battery separator casting film includes a control board 1 and a cooling component 3. An adjusting block 2 is installed on the outer side of the control board 1. An adjusting component 6 is arranged inside the adjusting block 2, and the number of the adjusting components 6 is set to two groups. The adjusting component 6 includes a lead screw 601 and a mounting frame 602, and the end of the lead screw 601 is provided with the mounting frame 602. The lead screw 601 is driven by a motor to control the movement of the adjusting block 2, that is, to adjust the spacing of the cooling boxes 301, so that the cooling boxes 301 can better approach the surface of the lithium battery separator casting film, resulting in good cooling effect.

[0023] As Figure 2 shown in the figure, the cooling component 3 for simultaneously cooling both sides of the lithium battery separator casting film is arranged inside the control board 1, and the number of the cooling components 3 is set to two groups. The cooling component 3 includes a cooling box 301, a cooling groove 302, a cooling surface 303 and a heat dissipation hole 304. A cooling groove 302 is opened inside the cooling box 301. The cooling surfaces 303 on the symmetrically distributed cooling boxes 301 can simultaneously cool the passing lithium battery separator casting film on both sides. The cooling surface 303 is arranged on the outer surface of the cooling box 301. A heat dissipation hole 304 is arranged in the middle of the cooling box 301. The shape of the cooling box 301 is annular, and the cooling box 301 and the cooling groove 302 are of an integrated structure. The inside of the cooling groove 302 is used for the flow of the coolant to cool the cooling surface 303 so as to achieve the effect of cooling the lithium battery separator casting film. A cooling fan 4 is arranged inside the heat dissipation hole 304, and an ice cylinder 5 is arranged at the end of the heat dissipation hole 304. The heat dissipation hole 304 cooperates with the cooling fan 4 and the ice cylinder 5 to assist in heat dissipation.

[0024] As Figure 3 shown in the figure, a base 7 is installed at the lower end of the mounting frame 602, and a connecting frame 8 is installed on the outer surface of the base 7. A positioning roller 9 is arranged inside the connecting frame 8. The positioning roller 9 keeps the film flat when discharging, and a discharging rotating cylinder 10 is arranged at the upper end inside the connecting frame 8. The discharging rotating cylinder 10 plays a role in adjusting the direction of the cooled film. A positioning roller 11 is arranged at the upper end inside the base 7. The discharging rotating cylinder 10 keeps the film flat when feeding, and a feeding rotating cylinder 12 is arranged at the lower end inside the base 7. The feeding rotating cylinder 12 adjusts the direction of the film when feeding.

[0025] In summary, for this back cooling device for the lithium battery separator casting film, first, according to Figures 1 - 3For the structure shown in the figure, the processed lithium battery separator cast film enters the inside of the cooling box 301 after passing through the feeding rotating cylinder 12 and the positioning roller 11. The control screw 601 is rotated to move the adjusting block 2, and the adjusting block 2 drives the control plate 1 to move, that is, to control the adjustment of the distance between the cooling surfaces 303 on the symmetrically distributed cooling boxes 301, so that the cooling boxes 301 can better approach the surface of the lithium battery separator cast film, resulting in good cooling effect. At this time, the cooling surfaces 303 can simultaneously cool the passing lithium battery separator cast film on both sides, avoiding the situation of poor cooling effect on the back of the film body. During cooling, the cooling liquid flows through the pipeline inside the cooling tank 302, and the cooling liquid cools the cooling surface 303 to achieve the effect of cooling the lithium battery separator cast film. During cooling, the cooling fans 4 and the ice cylinders 5 inside the heat dissipation holes 304 increase the heat dissipation effect. The cooled film body then passes through the positioning roller 9 and the discharging rotating cylinder 10 to complete the cooling and temperature reduction of the lithium battery separator cast film.

[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 illustrate 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 lithium battery diaphragm casting film backside cooling device, comprising a control panel (1) and a cooling assembly (3), characterized in that: An adjusting block (2) is installed on the outer side of the control board (1), and the cooling assembly (3) for cooling both sides of the lithium battery diaphragm casting film is arranged on the inner side of the control board (1), and the number of cooling assemblies (3) is arranged in two groups, and the cooling assembly (3) includes a cooling box (301), a cooling groove (302), a cooling surface (303) and a heat dissipation hole (304). The cooling box (301) is provided with a cooling groove (302) inside, and the outer surface of the cooling box (301) is provided with a cooling surface (303), and the middle part of the cooling box (301) is provided with a heat dissipation hole (304).

2. A lithium battery diaphragm casting film backside cooling device according to claim 1, characterized in that: The cooling box (301) is annular in shape, and the cooling box (301) and the cooling tank (302) are an integrated structure.

3. A lithium battery diaphragm casting film back side cooling device according to claim 1, characterized in that: A heat dissipation fan (4) is arranged inside the heat dissipation hole (304), and an ice cylinder (5) is arranged at the end of the heat dissipation hole (304).

4. A lithium battery diaphragm casting film backside cooling device according to claim 1, characterized in that: An adjustment component (6) is arranged inside the adjustment block (2), and the number of the adjustment components (6) is set to two groups.

5. A lithium battery diaphragm casting film backside cooling device according to claim 4, characterized in that: The adjustment assembly (6) comprises a screw rod (601) and a mounting frame (602), and the mounting frame (602) is arranged at the end of the screw rod (601).

6. A lithium battery diaphragm casting film backside cooling device according to claim 5, characterized in that: A base (7) is installed at the lower end of the installation frame (602), and a connecting frame (8) is installed on the outer surface of the base (7).

7. A lithium battery diaphragm casting film backside cooling device according to claim 6, characterized in that: A positioning roller (9) is arranged on the inner side of the connecting frame (8), and a discharging rotating drum (10) is arranged on the upper end of the inner side of the connecting frame (8).

8. A lithium battery diaphragm casting film backside cooling device according to claim 6, characterized in that: A second positioning roller (11) is arranged at the upper end of the inner side of the base (7), and a feeding rotating drum (12) is arranged at the lower end of the inner side of the base (7).

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