Lithium battery diaphragm cooling equipment

Abstract

The utility model relates to lithium battery diaphragm cooling equipment, which comprises a lithium film casting roller, a lithium battery diaphragm cooling roller, a lithium battery diaphragm cooling roller, a lithium battery diaphragm cooling roller, a lithium battery diaphragm cooling roller, a lithium battery diaphragm cooling roller and a lithium battery diaphragm cooling roller, the cold air cooling assembly is connected with a refrigeration assembly, the cold air cooling assembly is located on the side of the lithium film casting piece roller, a gap is formed between the cold air cooling assembly and the lithium film casting piece roller, when the lithium film casting piece roller rotates, the liquid film can pass through the gap between the cold air cooling assembly and the lithium film casting piece roller, and the cold air cooling assembly cools the liquid film; compared with the prior art, the cooling device has the beneficial effects that through the structural design of the cold air cooling assembly, a lithium battery thin film formed on the surface of the lithium film receiving roller can be reasonably and quickly cooled, the production efficiency of the lithium film is greatly improved, and the speed can be improved by 50-90%.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery separator processing equipment, specifically relating to a device for cooling lithium battery separators. Background Technology

[0002] In the production process of lithium battery separators, liquid lithium film is extruded from a high-temperature lithium film feeding die. When the liquid lithium film comes into contact with the lithium film receiving roller, a lithium battery thin film is formed on the surface of the lithium film receiving roller. During this process, the high-temperature liquid lithium film becomes a solid film, which needs to be cooled down. In the existing technology, natural cooling is usually used, which takes a long time and is slow, thus greatly reducing production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a lithium battery separator cooling device to solve the problems of long cooling time and low processing efficiency in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is a lithium battery separator cooling device, comprising: a lithium film casting roller, which is located below the lithium film feeding die, so that the liquid film extruded by the lithium film feeding die comes into contact with the lithium film casting roller; and a cold air cooling component, which is connected to a refrigeration component and is located on the side of the lithium film casting roller, with a gap between them. When the lithium film casting roller rotates, the liquid film can pass through the gap between the cold air cooling component and the lithium film casting roller, and the cold air cooling component cools the liquid film.

[0005] Furthermore, the cold air cooling component includes an air knife cooling cover and a cold air knife. The air knife cooling cover has an opening on one side and is curved in an arc shape. The cold air knife is provided with an air outlet. There are several cold air knives arranged along the arc curvature of the air knife cooling cover, and the distance between the several cold air knives and the center of the lithium film casting roller is equal.

[0006] Furthermore, the refrigeration component includes a cold source air cooler and a cold source main air pipe. The cold source air cooler is used to generate low-temperature cold air; the cold source main air pipe is used to transport the low-temperature cold air generated by the cold source air cooler. The cold air knife is connected to the cold source main air pipe so that the low-temperature cold air can enter the cold air knife.

[0007] Furthermore, a negative pressure baffle is installed inside the air knife cooling cover.

[0008] Furthermore, the air knife cooling shroud is connected to a main exhaust pipe, which is connected to an oil fume extraction assembly. The main exhaust pipe allows the oil fumes to be filtered by the oil fume extraction assembly before being discharged.

[0009] Furthermore, the air knife cooling cover is equipped with a top air knife, which has the same structure as the cold air knife and can be connected to a cold source air cooler or a fume extraction assembly.

[0010] Furthermore, the cold air knife has a blade tip connected to the air outlet. The blade tip consists of two layers of Teflon and one layer of insulation cotton, with the insulation cotton sandwiched between the two layers of Teflon.

[0011] Furthermore, it also includes a fixed steel frame for the shroud and a movable adjustment bracket for the shroud. The fixed steel frame for the shroud is connected to a guide rail and can move along the guide rail. The movable adjustment bracket for the shroud is connected to the fixed steel frame for the shroud and is used to install the air knife cooling shroud.

[0012] Furthermore, the air hood moving adjustment bracket is equipped with a cold air hood fixed side mounting plate, which is used to fix the air knife cooling hood.

[0013] Furthermore, the air hood moving adjustment bracket is also equipped with a lifting module. The telescopic end of the lifting module is shaft-connected to the mounting plate on the fixed side of the air hood, so that the lifting module can adjust the horizontal height of the air knife cooling hood.

[0014] Compared with the existing technology, the beneficial effects of this utility model are: through the structural design of the cold air cooling component, the lithium battery film formed on the surface of the lithium film receiving roller can be cooled in a reasonable and rapid manner, which greatly increases the production efficiency of lithium film and can increase the speed by 50%-90%. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0016] Figure 2 This is a top view of the overall structure of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the cold air cooling component of this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the cold air cooling component of this utility model;

[0019] Figure 5 This is a schematic diagram showing the positional status of the cold air cooling component and the lithium film casting roller of this utility model.

[0020] Figure 6 This is a schematic diagram of the windshield moving and adjusting bracket structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the cross-sectional structure of the cold air knife of this utility model;

[0022] Among them, 1-lithium film casting roller, 2-cold air cooling component, 201-air knife cooling cover, 202-cold air knife, 203-negative pressure baffle, 204-oil fume vent, 3-lithium film feeding die head, 4-lithium battery film, 5-refrigeration component, 501-cold source air main pipeline, 502-cold source air cooler, 6-smoke exhaust main pipeline, 7-negative pressure fan, 8-oil fume filter, 9-top air knife, 10-air hood fixing steel frame, 11-air hood moving adjustment bracket, 12-cold air hood fixing side mounting plate, 13-cold air hood fixing mounting shaft, 14-lifting module, 15-reversing reducer, 16-integral positioning frame, 17-guide rail, 18-positioning handle, 19-Teflon anti-collision guard plate. Detailed Implementation

[0023] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] See Figures 1 to 7 As shown, a lithium film cooling device includes a lithium film casting roller 1 and a cold air cooling component 2. The cold air cooling component 2 is located to the side of the lithium film casting roller 1, with a gap between them. The lithium film casting roller 1 is located below the lithium film feeding die 3. The extruded liquid film comes into contact with the lithium film casting roller 1. At this time, the liquid film is located between the lithium film casting roller 1 and the cold air cooling component 2. As the lithium film casting roller 1 rotates, the liquid film passes through the gap between them and then passes through the cold air cooling component 2 to cool and lower the extruded liquid film to form a lithium battery film 4, thereby improving efficiency.

[0025] The cold air cooling component 2 includes an air knife cooling cover 201 and cold air knives 202. Each end of the cold air knife 202 has a cold air inlet, and the cold air knife 202 is provided with an air outlet. There are several cold air knives 202, all located inside the air knife cooling cover 201. The air knife cooling cover 201 has a single-sided opening and is curved. The several cold air knives 202 are arranged along the curved direction of the air knife cooling cover 201. When the air knife cooling cover 201 is adjusted to the specified position, the distance between the several cold air knives 202 and the center of the lithium film casting roller 1 is equal. The several cold air knives 202 can blow out cold air. After passing through the single-sided opening, the cold air blows onto the liquid film on the lithium film casting roller 1, thereby achieving the cooling of the extruded liquid film.

[0026] An air intake is provided on the air knife cooling cover 201. The air inlet of the cold air knife 202 passes through the air intake on the air knife cooling cover 201. The cold air knife 202 is connected to a refrigeration component 5. Specifically, the refrigeration component 5 includes a cold source air main pipeline 501 and a cold source air cooler 502. A cold air regulating valve is provided on the cold source air main pipeline 501. The cold source air main pipeline 501 is connected to the cold source air cooler 502. The air inlet of the cold air knife 202 is connected to the cold air regulating valve through a hose. The cold air regulating valve is used to regulate the air pressure and flow rate entering the air knife. The cold source air cooler 502 generates low-temperature cold air (-15℃ to 0℃, the temperature can be set and the temperature difference can be controlled ±1℃). The low-temperature cold air is collected by the cold source air main pipeline 501 and delivered to the cold air regulating valve. After being regulated by the cold air regulating valve, the cold air is input into the cold air knife 202 through the hose. The internal structure of the cold air knife can blow the cold air evenly onto the lithium film surface.

[0027] A negative pressure baffle 203 is provided at the air intake position inside the air knife cooling cover 201 to form a negative pressure zone around the inside of the air knife cooling cover 201. This prevents external moisture from flowing into the air knife cooling cover 201 and coming into contact with the cold air knife to generate liquefied water droplets, thus avoiding the liquefied water droplets from being blown onto the lithium film surface and affecting the yield.

[0028] Oil fume vents 204 are provided on both sides of the aforementioned air knife cooling hood 201. The oil fume vents 204 are connected to the main exhaust pipe 6 via flexible hoses. An oil fume suction and exhaust assembly is connected to the main exhaust pipe 6. The oil fume suction and exhaust assembly includes a negative pressure fan 7 and an oil fume filter 8, which are connected together. The oil fume filter 8 is fixed to the main exhaust pipe 6. During the cooling process of the cold air knife 202 on the liquid film, a large amount of high-temperature oil fume gas accumulates inside the air knife cooling hood 201, thus forming a blanket effect, which prevents the heat inside the air knife cooling hood 201 from dissipating. Therefore, it is necessary to exhaust the high-temperature oil fume. At this time, the negative pressure fan 7 works, so that the high-temperature oil fume gas accumulated inside the air knife cooling hood 201 enters the oil fume filter 8 after passing through the main exhaust pipe 6. The oil fume filter 8 filters out the high-temperature oil fume, and relatively clean air is discharged.

[0029] At the very top of the air knife cooling cover 201 is a top air knife 9, which has the same structure as the cold air knife 202. The top air knife 9 can be connected to the cold source air cooler 502, in which case it can introduce cold air to cool the membrane surface. Alternatively, the top air knife 9 can be connected to the exhaust pipe 6, and the high-temperature oil fumes can be drawn away by the negative pressure fan 7. The specific adjustments can be made according to the existing site conditions.

[0030] In this application, a fan shroud fixing steel frame 10 is also provided. The fan shroud fixing steel frame 10 is used to fix, install, and move the air knife cooling shroud 201. The air knife cooling shroud 201 is connected to the fan shroud fixing steel frame 10 through a fan shroud moving adjustment bracket 11. The fan shroud moving adjustment bracket 11 is provided with a cold air shroud fixing side mounting plate 12 and a lifting module 14. The cold air shroud fixing side mounting plate 12 is used to fix the air knife cooling shroud 201. The cold air shroud fixing side mounting plate 12 is connected to the lifting module 14 through a cold air shroud fixing mounting shaft 13. The lifting module 14 is connected to allow the air knife cooling cover 201 to adjust its angle. A reversing reducer 15 is connected to the lifting module 14, which controls the extension and retraction of the lifting module 14. The extension and retraction end of the lifting module 14 is axially connected to the mounting plate 12 on the fixed side of the air hood, thereby adjusting the horizontal height of the air knife cooling cover 201. The lifting module 14 is connected to a module adjustment wheel and a module locking handle, which can lock the height of the air knife cooling cover 201 after the horizontal height adjustment is completed.

[0031] In this equipment, the lithium film casting roller 1 is mounted on the overall positioning frame 16. The overall positioning frame 16 is provided with a horizontally extending guide rail 17. The fan hood fixing steel frame 10 is connected to the guide rail 17, and the position of the fan hood fixing steel frame 10 can be adjusted. Guide rail limiters are provided at both ends of the guide rail to prevent the entire air knife cooling hood 201 and the fan hood moving adjustment bracket 11 from deviating from the track during movement. When controlling the horizontal movement of the fan hood fixing steel frame 10, a positioning handle 18 is provided on the fan hood moving adjustment bracket 11. The position of the fan hood fixing steel frame 10 and its horizontal distance to the lithium battery film 4 are controlled by the positioning handle 18, which facilitates the cooling operation.

[0032] In addition, in this embodiment, the outlet of the cold air knife 202 is connected to a nozzle 2021. The nozzle 2021 consists of two Teflon layers 20211 and a heat insulation cotton layer 20212. The heat insulation cotton layer 20212 is sandwiched between the two Teflon layers 20211. That is, the layer structure at this point is as follows: Teflon-heat insulation cotton-Teflon. Because the cold air passes through the cold air knife 202, the temperature of the blade of the cold air knife 202 is relatively low. If there is water vapor in the air, it will liquefy into water droplets, which will affect the yield when blown onto the film surface.

[0033] Finally, a Teflon anti-collision guard plate 19 is installed at the side opening of the air knife cooling cover 201 to prevent the air knife cooling cover 201 from hitting the lithium film casting roller 1 during movement.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; they can refer to an electrical connection; they can refer to a hydraulic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be primarily defined by the scope of the claims.

Claims

1. A lithium battery separator cooling device, characterized in that, include: A lithium film casting roller is located below the lithium film feeding die, so that the liquid film extruded from the lithium film feeding die comes into contact with the lithium film casting roller. A cooling component is provided, which is connected to a refrigeration component. The cooling component is located on the side of the lithium film casting roller, with a gap between them. When the lithium film casting roller rotates, the liquid film can pass through the gap between the cooling component and the lithium film casting roller, and the cooling component cools the liquid film.

2. The lithium battery separator cooling device according to claim 1, characterized in that, The cooling air assembly includes: The air knife cooling cover has an opening on one side and is curved. The cold air knife is provided with an air outlet. There are several cold air knives arranged along the arc-shaped curvature of the air knife cooling cover. The distance between the several cold air knives and the center of the lithium film casting roller is equal.

3. The lithium battery separator cooling device according to claim 2, characterized in that, The cooling component includes: A cold source air cooler, wherein the cold source air cooler is used to generate low-temperature cold air; The cold source air main pipeline is used to transport low-temperature cold air generated by the cold source air cooler. The cold air knife is connected to the cold source air main pipeline so that the low-temperature cold air can enter the cold air knife.

4. The lithium battery separator cooling device according to claim 2, characterized in that: The air knife cooling cover is equipped with a negative pressure baffle.

5. The lithium battery separator cooling device according to claim 2, characterized in that: The air knife cooling cover is connected to a main exhaust pipe, and an oil fume extraction assembly is connected to the main exhaust pipe. The main exhaust pipe allows the oil fumes to be filtered by the oil fume extraction assembly before being discharged.

6. The lithium battery separator cooling device according to claim 5, characterized in that, The air knife cooling cover is equipped with a top air knife, which has the same structure as the cold air knife and can be connected to the fume extraction assembly.

7. The lithium battery separator cooling device according to any one of claims 2 to 6, characterized in that, The cold air knife has a blade tip connected to its air outlet. The blade tip consists of two layers of Teflon and one layer of insulation cotton, with the insulation cotton sandwiched between the two layers of Teflon.

8. The lithium battery separator cooling device according to any one of claims 1 to 6, characterized in that, Also includes: A wind hood fixing steel frame is connected to a guide rail, and the wind hood fixing steel frame can move along the guide rail; A wind hood adjustment bracket is provided, which is connected to the fixed steel frame of the wind hood. The wind hood adjustment bracket is used to install the wind knife cooling hood.

9. The lithium battery separator cooling device according to claim 8, characterized in that, The air hood movable adjustment bracket is equipped with a cold air hood fixed side mounting plate, which is used to fix the air knife cooling hood.

10. The lithium battery separator cooling device according to claim 9, characterized in that, The air hood movable adjustment bracket is also equipped with a lifting module. The telescopic end of the lifting module is shaft-connected to the mounting plate on the fixed side of the air hood, so that the lifting module can adjust the horizontal height of the air knife cooling hood.

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