A device for preparing carbon-coated composite current collectors capable of uniformly depositing aluminum.

Abstract

This utility model discloses a carbon-coated composite current collector preparation device capable of uniformly depositing aluminum plating. This utility model relates to the field of composite current collector technology and includes a base. A coating mechanism and a plating mechanism are arranged on the top of the base. The plating mechanism includes a coating machine housing mounted on the base, containing a coating machine, and a controller mounted on the outside of the coating machine housing. The coating mechanism includes a vacuum coating chamber mounted on the base. By providing sealing components on both sides of the substrate entry and exit slots, the substrate can pass through the slots and be sealed, preventing gas molecules from entering the vacuum coating chamber and ensuring the vacuum of the vacuum coating chamber. This prevents impurities from settling on the substrate, which would affect the deposition of aluminum evaporation products on the substrate, thus allowing for uniform aluminum plating deposition on the substrate.

Description

Technical Field

[0001] This utility model relates to the field of composite current collector technology, specifically to a device for preparing carbon-coated composite current collectors that can uniformly deposit aluminum. Background Technology

[0002] The composite current collector structure is similar to a "sandwich" structure, with a base film made of polymer material in the middle and two outer layers of copper or aluminum metal films. The carbon-coated composite current collector refers to the carbon coating layer on the side of the aluminum film away from the base film, that is, coating a layer of nano-conductive graphite as the carbon coating layer, thus obtaining the carbon-coated composite current collector. For example, patent document CN202510502534.2, entitled "Preparation Method of Composite Anode Sheet for All-Solid-State Battery and Anode Sheet Obtained", places a lithium alloy foil between a first copper foil and a second copper foil, and rolls it to obtain a lithium-containing composite current collector. A carbon coating layer is coated on the side of the first copper foil away from the lithium alloy foil. Through holes are opened on the first copper foil and the carbon coating layer to obtain a porous carbon-coated composite current collector.

[0003] Aluminum deposition on polymer base films can be achieved using vacuum deposition. Vacuum deposition is an industrial technology system based on vacuum environment for thin film deposition. This method involves physical processes such as evaporation and sputtering of metallic or non-metallic materials under vacuum conditions, causing the material to be deposited on the substrate surface in atomic or molecular form to form a functional thin film. Patent document CN202323552181.2, entitled "Deposition Apparatus for Composite Current Collectors," describes a worktable equipped with an unwinding assembly, a rewinding assembly, and a vacuum deposition area. The vacuum deposition area includes a housing and a vacuum cavity formed within the housing. The two ends of the unwinding and rewinding components are respectively provided with inlet and outlet ports that connect to the vacuum chamber. This technical solution releases the base film strip through the unwinding component, and after passing through the inlet and outlet ports of the vacuum chamber, it is wound onto the rewinding component. The double-sided coating of the base film strip can be completed through the vacuum chamber. However, the inlet and outlet ports of the vacuum chamber in this technical solution lack a sealing structure, which makes it impossible to make close contact with the base film strip. This allows external gas molecules to easily seep in from these ports, causing impurities in the gas molecules to fall onto the base film strip. This affects the deposition of aluminum evaporation products on the substrate, thereby affecting the uniform coating of the substrate. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a device for preparing carbon-coated composite current collectors that can uniformly deposit aluminum plating, thus solving the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a carbon-coated composite current collector preparation device capable of uniformly depositing aluminum, comprising a base, with a coating mechanism and a plating mechanism disposed on the top of the base; the plating mechanism includes a coating machine housing disposed on the base, a coating machine disposed inside the coating machine housing, and a controller disposed on the outside of the coating machine housing; the coating mechanism includes a vacuum coating chamber disposed on the base, with a vacuum pump and a heater disposed on the vacuum coating chamber, an evaporation tank for placing aluminum material disposed inside the vacuum coating chamber, through slots disposed on both sides of the vacuum coating chamber, sealing components for tightly fitting the upper and lower sides of the substrate disposed in both through slots, and the front and rear sides of the substrate respectively contacting the inner walls of the front and rear sides of the through slots; winding components disposed on both sides of the vacuum coating chamber, one winding component for releasing the substrate, and the other winding component for winding the coated substrate.

[0006] Preferably, the sealing assembly includes grooves communicating with the upper and lower sides of the through groove. Slide rods are fitted and connected in both grooves. Mounting plates are provided on opposite sides of the upper and lower slide rods. Rubber blocks are provided on opposite sides of the upper and lower mounting plates. Springs are provided at the ends of the upper and lower slide rods that are far apart from each other. The upper and lower springs are respectively connected in the upper and lower grooves. The front and rear sides of the slide rods, mounting plates and rubber blocks are aligned with the inner walls of the front and rear sides of the through groove.

[0007] Preferably, both ends of the vacuum coating chamber are fitted with L-shaped stop bars, and the stop bars are in contact with the grooves and the slide bars. Screws that connect to the vacuum coating chamber are evenly arranged on the stop bars.

[0008] Preferably, diagonal braces are provided on both the upper and lower mounting plates, and the distance between the diagonal braces gradually decreases from front to back. Both ends of the vacuum coating box are provided with sliding grooves and fixing plates. Screws are provided on the fixing plates. The screws are connected to the slide frame through bearings, and two extrusion wheels are provided on the slide frame, with the two extrusion wheels respectively facing the two diagonal braces.

[0009] Preferably, the front end of the screw is provided with a handwheel, and the slide is slidably connected to the slide groove.

[0010] Preferably, the winding assembly includes a support base disposed on a vacuum coating chamber, the support base being provided with a tensioning shaft, a guide roller one, a guide roller two, and a guide roller three, wherein the height of guide roller one is lower than that of guide roller two and guide roller three, and the support base is also provided with a drive motor for driving the tensioning shaft to rotate.

[0011] This invention provides a device for preparing carbon-coated composite current collectors capable of uniformly depositing aluminum. Compared with the prior art, it has the following advantages:

[0012] 1. The carbon-coated composite current collector preparation device that can uniformly deposit aluminum plating has sealing components on both sides of the through grooves at the substrate entry and exit. When the substrate passes through, the sealing components can seal the through grooves, thereby preventing gas molecules from entering the vacuum coating box and ensuring the vacuum of the vacuum coating box. This prevents impurities from falling on the substrate and affecting the deposition of aluminum evaporation products on the substrate, thus enabling the substrate to be uniformly deposited with aluminum plating.

[0013] 2. The carbon-coated composite current collector preparation device that can uniformly deposit aluminum coating can support two rubber blocks by setting up inclined rods, screws and two extrusion rollers, so that workers can free their hands to complete the passing of the substrate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional schematic diagram of the sealing assembly of this utility model;

[0016] Figure 3 This is a three-dimensional schematic diagram of the sealing assembly of this utility model;

[0017] Figure 4 This utility model Figure 1 A schematic diagram of point A in the middle.

[0018] In the diagram: 1. Base; 2. Coating machine housing; 3. Controller; 4. Vacuum coating chamber; 5. Vacuum pump; 6. Heater; 7. Through groove; 8. Groove; 9. Slide rod; 10. Mounting plate; 11. Rubber block; 12. Spring; 13. Stop bar; 14. Screw; 15. Diagonal bar; 16. Slide groove; 17. Fixing plate; 18. Screw; 19. Handwheel; 20. Slide frame; 21. Extrusion roller; 22. Support seat; 23. Tensioning shaft; 24. Guide roller one; 25. Guide roller two; 26. Guide roller three. Detailed Implementation

[0019] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] See Figures 1-4 This utility model provides the following two technical solutions:

[0021] First embodiment: A carbon-coated composite current collector preparation device capable of uniformly depositing aluminum, comprising a base 1, wherein a coating mechanism and a coating mechanism are provided on the top of the base 1.

[0022] The coating mechanism includes a coating machine box 2 mounted on a base 1. A coating machine is installed inside the coating machine box 2. The coating machine is used to coat carbon after the substrate is aluminum-plated. It can use the coating machine in the patent document with patent number CN202223303478.0 entitled "A Coating Module and Coating Machine" to complete the coating of conductive graphite. A controller 3 is installed on the outside of the coating machine box 2, which is used to control the electrical components mentioned in the document.

[0023] The coating mechanism includes a vacuum coating chamber 4 mounted on a base 1. The vacuum coating chamber 4 is equipped with a vacuum pump 5 and a heater 6. An evaporation tank for placing aluminum material is provided inside the vacuum coating chamber 4. The aluminum material is heated by the heater 6 and evaporated, so that the aluminum material evaporated fills the vacuum coating chamber 4. Both sides of the vacuum coating chamber 4 are provided with through grooves 7. Both sides of the through grooves 7 are provided with sealing components for tightly fitting the upper and lower sides of the substrate. The front and rear sides of the substrate are in contact with the inner walls of the front and rear sides of the through grooves 7, respectively. Both sides of the vacuum coating chamber 4 are provided with winding components. One winding component is used to release the substrate, and the other winding component is used to wind up the coated substrate.

[0024] The sealing assembly includes grooves 8 that communicate with the upper and lower sides of the through groove 7. Slide rods 9 are fitted and connected to both sides of the grooves 8. Mounting plates 10 are provided on opposite sides of the upper and lower slide rods 9. Rubber blocks 11 are provided on opposite sides of the upper and lower mounting plates 10. Springs 12 are provided at the ends of the upper and lower slide rods 9 that are far apart from each other. The upper and lower springs 12 are respectively connected to the upper and lower grooves 8. The front and rear sides of the slide rods 9, mounting plates 10, and rubber blocks 11 are aligned with the inner walls of the front and rear sides of the through groove 7. The upper and lower sides of the substrate are in contact with the upper and lower rubber blocks 11, and the front and rear sides are in contact with the through groove 7. This prevents external gas molecules from entering the vacuum coating chamber 4 through the through groove 7, ensuring the vacuum of the vacuum coating chamber 4. This avoids impurities falling on the substrate, which would affect the deposition of aluminum evaporation products on the substrate, thus allowing the substrate to be uniformly deposited with aluminum.

[0025] Both ends of the vacuum coating chamber 4 are fitted with L-shaped stop bars 13, and the stop bars 13 are in contact with the grooves 8 and the slide bars 9. Screws 14 that connect to the vacuum coating chamber 4 are evenly arranged on the stop bars 13. The detachable stop bars 13 facilitate the replacement of the springs 12. The L-shaped stop bars 13 also facilitate stable insertion into the vacuum coating chamber 4. When the slide bars 9 are raised and lowered, they can still be guided by the through grooves 7, grooves 8 and stop bars 13.

[0026] Both the upper and lower mounting plates 10 are equipped with diagonal rods 15, and the distance between the diagonal rods 15 gradually decreases from front to back. Both ends of the vacuum coating box 4 are equipped with sliding grooves 16 and fixing plates 17. The fixing plate 17 is equipped with screws 18, which are connected to the slide 20 through bearings. The slide 20 is equipped with two extrusion rollers 21, which are opposite to the two diagonal rods 15 respectively. The screws 18 rotate on the fixing plate 17, causing the slide 20 to drive the extrusion rollers 21 to move back and forth. When moving backward, the diagonal rods 15 on both sides can move to the side that is far away from each other, thereby causing the upper and lower rubber blocks 11 to separate. After separation, the worker can pass the substrate through. The above structure facilitates separation and supports the upper and lower rubber blocks 11.

[0027] For ease of use, a handwheel 19 is provided at the front end of the screw 18 to guide the slide 20 so that the slide 20 is slidably connected to the slide groove 16.

[0028] The second embodiment differs from the first embodiment in that the winding assembly includes a support base 22 mounted on the vacuum coating chamber 4. The support base 22 is equipped with a tensioning shaft 23, a first guide roller 24, a second guide roller 25, and a third guide roller 26. The height of the first guide roller 24 is lower than that of the second guide roller 25 and the third guide roller 26. This allows the substrate to remain taut as it passes through the first guide roller 24, the second guide roller 25, and the third guide roller 26. The support base 22 is also equipped with a drive motor for driving the tensioning shaft 23 to rotate. The substrate cylinder is mounted through the tensioning shaft 23 and is driven to rotate by the drive motor.

[0029] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0030] During use, the substrate passes through the two side channels 7, with the front and rear sides in contact with the inner wall of the channel 7, and the top and bottom sides in contact with the rubber block 11. This prevents external gas molecules from entering the channel 7, ensuring a vacuum inside the vacuum coating chamber 4. This avoids impurities on the substrate from affecting the deposition of aluminum evaporation products on the substrate, allowing for uniform aluminum deposition. After aluminum deposition, an aluminum-coated composite current collector is obtained. It is then removed from the tensioning shaft 23 and placed in the coating machine inside the coating chamber 2 for conductive graphite coating, thus obtaining a carbon-coated composite current collector.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preparing a carbon-coated composite current collector capable of uniformly depositing aluminum, characterized in that: Includes a base (1), and the top of the base (1) is provided with a coating mechanism and a coating mechanism; The coating mechanism includes a coating machine box (2) set on the base (1), a coating machine is installed inside the coating machine box (2), and a controller (3) is installed on the outside of the coating machine box (2); The coating mechanism includes a vacuum coating box (4) mounted on a base (1). The vacuum coating box (4) is equipped with a vacuum pump (5) and a heater (6). An evaporation tank for placing aluminum material is provided inside the vacuum coating box (4). A through groove (7) is provided on both sides of the vacuum coating box (4). A sealing component for tightly fitting the upper and lower sides of the substrate is provided in both through grooves (7). The front and rear sides of the substrate are in contact with the inner walls of the front and rear sides of the through groove (7). A winding component is provided on both sides of the vacuum coating box (4). One winding component is used to release the substrate, and the other winding component is used to wind up the coated substrate.

2. The apparatus for preparing a carbon-coated composite current collector capable of uniformly depositing aluminum according to claim 1, characterized in that: The sealing assembly includes grooves (8) that communicate with the upper and lower sides of the through groove (7). Slide rods (9) are fitted and connected in both grooves (8). Mounting plates (10) are provided on opposite sides of the upper and lower slide rods (9). Rubber blocks (11) are provided on opposite sides of the upper and lower mounting plates (10). Springs (12) are provided at the ends of the upper and lower slide rods (9) that are far apart from each other. The upper and lower springs (12) are respectively connected in the upper and lower grooves (8). The front and rear sides of the slide rods (9), mounting plates (10) and rubber blocks (11) are aligned with the inner walls of the front and rear sides of the through groove (7).

3. The apparatus for preparing a carbon-coated composite current collector capable of uniformly depositing aluminum according to claim 2, characterized in that: Both ends of the vacuum coating box (4) are connected to L-shaped stop bars (13), and the stop bars (13) are in contact with the groove (8) and the slide bar (9). Screws (14) that connect to the vacuum coating box (4) are evenly arranged on the stop bars (13).

4. The apparatus for preparing a carbon-coated composite current collector capable of uniformly depositing aluminum according to claim 2, characterized in that: Both the upper and lower mounting plates (10) are provided with diagonal rods (15), and the distance between the diagonal rods (15) on both sides gradually decreases from front to back. Both ends of the vacuum coating box (4) are provided with sliding grooves (16) and fixing plates (17). The fixing plate (17) is provided with screws (18), and the screws (18) are connected to the slide frame (20) through bearings. The slide frame (20) is provided with two extrusion wheels (21), and the two extrusion wheels (21) are respectively opposite to the two diagonal rods (15).

5. The apparatus for preparing a carbon-coated composite current collector capable of uniformly depositing aluminum according to claim 4, characterized in that: The front end of the screw (18) is provided with a handwheel (19), and the slide (20) is slidably connected to the slide groove (16).

6. The apparatus for preparing a carbon-coated composite current collector capable of uniformly depositing aluminum according to claim 1, characterized in that: The winding assembly includes a support base (22) disposed on a vacuum coating box (4). The support base (22) is provided with a tensioning shaft (23), a guide roller one (24), a guide roller two (25) and a guide roller three (26). The height of the guide roller one (24) is lower than that of the guide roller two (25) and the guide roller three (26). The support base (22) is also provided with a drive motor for driving the tensioning shaft (23) to rotate.

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