Lithium alloy strip composite calendering device for lithium battery

Abstract

The lithium alloy belt composite calendering device for the lithium battery comprises an outer box, a copper foil unwinding roller, a lithium alloy unwinding roller, a PET unwinding roller, a waste PET winding roller and a finished product winding roller are rotationally connected into the outer box, a calendering mechanism is arranged in the outer box, a mounting frame is fixedly mounted in the outer box, a cleaning rod is arranged at the bottom of the mounting frame, and the cleaning rod is connected with the outer box. A mounting plate is fixedly mounted in the outer box, a brake motor is fixedly mounted on the side wall of the mounting plate, a bidirectional threaded rod is fixedly mounted at the output end of the brake motor and is in threaded connection with a sliding block, a connecting plate is fixedly mounted at the bottom of the sliding block, and a first electric push rod is fixedly mounted at the bottom of the connecting plate; a cutting knife is mounted at the output end of the first electric push rod; the calendering device is high in efficiency, the distance between the cutting knives can be freely adjusted after calendering, free adjustment can be conveniently carried out according to needed finished product materials with different widths, use is convenient, and impurities on the surface of the copper foil can be cleaned before calendering.

Description

Technical Field

[0001] The utility model relates to the field of lithium strip processing, and more specifically, to a composite rolling device for lithium alloy strip for lithium batteries. Background Art

[0002] With the rapid development of the new energy electric vehicle field, lithium batteries are more and more widely used. Lithium batteries rely on the insertion and extraction of lithium ions between the positive and negative electrodes to achieve energy storage and release. The traditional materials used for the negative electrode in lithium batteries are mainly petroleum coke and graphite. With the increasing demand for energy density, metallic lithium with high specific capacity has gradually become a promising negative electrode material for lithium batteries. The compounding of lithium strip and copper foil is mainly carried out by extrusion. Using the mechanical pressure of the roller, the copper foil is embedded into the lithium metal to form a stable lithium metal negative electrode.

[0003] After the rolling of the lithium strip composite material, cutting is required. The cutting knife is fixedly installed and cannot be adjusted, which will lead to the inability to freely adjust according to the required finished materials of different widths and is not convenient to use.

[0004] Therefore, we make improvements on this and propose a composite rolling device for lithium alloy strip for lithium batteries. Content of the Utility Model

[0005] The purpose of the utility model is to address the current situation where the cutting knife is fixedly installed and cannot be adjusted, which results in the inability to freely adjust according to the required finished materials of different widths and is not convenient to use.

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

[0007] A composite rolling device for lithium alloy strip for lithium batteries to improve the above problems.

[0008] Specifically, this application is as follows:

[0009] It includes an outer box. Inside the outer box, a copper foil unwinding roller, a lithium alloy unwinding roller, a PET unwinding roller, a waste PET winding roller, and a finished product winding roller are rotatably connected. A rolling mechanism is arranged inside the outer box. An installation frame is fixedly installed inside the outer box. A cleaning rod is arranged at the bottom of the installation frame. An installation plate is fixedly installed inside the outer box. A braking motor is fixedly installed on the side wall of the installation plate. The output end of the braking motor is fixedly installed with a bidirectional threaded rod. A slider is threadedly connected to the bidirectional threaded rod. The slider is slidably connected to the installation plate. A connecting plate is fixedly installed at the bottom of the slider. A first electric push rod is fixedly installed at the bottom of the connecting plate. A cutting knife is installed at the output end of the first electric push rod.

[0010] As a preferred technical solution of the present application, the calendering mechanism includes a second electric push rod fixedly installed inside the outer box. The output end of the second electric push rod is fixedly installed with a gantry, and a calender roll is rotatably connected to the bottom of the gantry.

[0011] As a preferred technical solution of the present application, a U-shaped frame is fixedly installed inside the outer box, and an auxiliary wheel is rotatably connected to the U-shaped frame.

[0012] As a preferred technical solution of the present application, a plug rod is fixedly installed at the top of the cleaning rod.

[0013] As a preferred technical solution of the present application, a slot is opened at the bottom of the mounting frame, and the slot is matched with the plug rod.

[0014] As a preferred technical solution of the present application, a bolt is threadedly connected to the side wall of the mounting frame.

[0015] As a preferred technical solution of the present application, a collection box is arranged inside the outer box.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] In the solution of the present application:

[0018] 1. The braking motor drives the bidirectional threaded rod to rotate. The bidirectional threaded rod drives the slider to move. The slider drives the mounting plate at the bottom to move. The mounting plate drives the first electric push rod to move. The first electric push rod drives the cutting knife to move until the distance between the two cutting knives is the required width. The calendering device of the present application not only has high efficiency, but also after calendering, the distance between the cutting knives can be freely adjusted, which is convenient for freely adjusting according to the required finished materials of different widths and is convenient for use, solving the problem in the prior art that the cutting knife is fixedly installed and cannot be adjusted, which will result in the inability to freely adjust according to the required finished materials of different widths.

[0019] 2. Through the arranged cleaning rod, when the copper foil is unrolled, the cleaning cotton on the cleaning rod can clean the dust and impurities on its surface. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the lithium alloy strip composite calendering device for lithium batteries provided by the present application;

[0021] Figure 2 It is a front structural diagram of the lithium alloy strip composite calendering device for lithium batteries provided by the present application;

[0022] Figure 3 It is a schematic structural diagram of the cutting component of the lithium alloy strip composite calendering device for lithium batteries provided by the present application;

[0023] Figure 4 Schematic diagram of the bottom structure of the cutting component of the lithium alloy strip composite rolling device for lithium batteries provided by the present application;

[0024] Figure 5 Schematic diagram of the slider structure of the lithium alloy strip composite rolling device for lithium batteries provided by the present application;

[0025] Figure 6 Schematic diagram of the cleaning component structure of the lithium alloy strip composite rolling device for lithium batteries provided by the present application;

[0026] Figure 7 Schematic diagram of the plug rod structure of the lithium alloy strip composite rolling device for lithium batteries provided by the present application;

[0027] Figure 8 Schematic diagram of the slot structure of the lithium alloy strip composite rolling device for lithium batteries provided by the present application.

[0028] Labels in the figure:

[0029] 1. Outer box; 2. Copper foil unwinding roller; 3. Lithium alloy unwinding roller; 4. PET unwinding roller; 5. Waste PET winding roller; 6. Finished product winding roller; 7. Mounting frame; 8. Cleaning rod; 9. Mounting plate; 10. Brake motor; 11. Bidirectional threaded rod; 12. Slider; 13. Second electric push rod; 14. Gantry; 15. Rolling roller; 16. Connecting plate; 17. First electric push rod; 18. Cutting knife; 19. Plug rod; 20. Slot; 21. Bolt; 22. U-shaped frame; 23. Auxiliary wheel; 24. Collection box. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention.

[0031] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention claimed, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0032] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0035] Embodiment:

[0036] As Figure 1-8 shown, this embodiment provides a lithium alloy strip composite rolling device for lithium batteries, which includes an outer box 1. Inside the outer box 1, there are rotatably connected a copper foil unwinding roller 2, a lithium alloy unwinding roller 3, a PET unwinding roller 4, a waste PET winding roller 5, and a finished product winding roller 6. The finished product winding roller 6 and the waste PET winding roller 5 are driven by motors. A rolling mechanism is arranged inside the outer box 1. An installation frame 7 is fixedly installed inside the outer box 1. A cleaning rod 8 is arranged at the bottom of the installation frame 7. An installation plate 9 is fixedly installed inside the outer box 1. A braking motor 10 is fixedly installed on the side wall of the installation plate 9. The output end of the braking motor 10 is fixedly installed with a bidirectional threaded rod 11. The braking motor 10 drives the bidirectional threaded rod 11 to rotate. A slider 12 is threadedly connected to the bidirectional threaded rod 11. The bidirectional threaded rod 11 drives the slider 12 to move. The slider 12 is slidably connected to the installation plate 9. The slider 12 drives the bottom installation plate 9 to move. A connecting plate 16 is fixedly installed at the bottom of the slider 12. A first electric push rod 17 is fixedly installed at the bottom of the connecting plate 16. The installation plate 9 drives the first electric push rod 17 to move. The output end of the first electric push rod 17 is installed with a cutting knife 18. The first electric push rod 17 drives the cutting knife 18 to move until the distance between the two cutting knives 18 is the required width.

[0037] The rolling mechanism includes a second electric push rod 13 fixedly installed inside the outer box 1. The output end of the second electric push rod 13 is fixedly installed with a gantry 14. A rolling roller 15 is rotatably connected to the bottom of the gantry 14.

[0038] A U-shaped frame 22 is fixedly installed inside the outer box 1. An auxiliary wheel 23 is rotatably connected to the U-shaped frame 22.

[0039] In order to facilitate the disassembly and cleaning of the cleaning rod 8, a plug rod 19 is fixedly installed at the top of the cleaning rod 8, a slot 20 is opened at the bottom of the mounting frame 7, the slot 20 is matched with the plug rod 19, and a bolt 21 is threadedly connected to the side wall of the mounting frame 7.

[0040] In order to collect the cut waste materials, a collection box 24 is arranged in the outer box 1.

[0041] Specifically, when the lithium alloy strip composite rolling device for lithium batteries is in use: one end of the copper foil and the lithium alloy is fixed on the finished product winding roller 6 (the lithium alloy is: the lithium alloy for lithium batteries, and the lithium alloy strip is a strip material made by alloying lithium with other metal elements (such as aluminum, magnesium), and this material is a mature technology produced at present), one end of the PET film is fixed on the waste PET winding roller 5, the finished product winding roller 6 and the waste PET winding roller 5 are driven by motors. After starting, the rolling roller 15 presses the lithium strip on both sides of the copper foil, and then presses the PET film on both sides of the lithium strip, so that both sides of the lithium alloy are pasted with the thin PET material as the protective film of the lithium alloy. From the outside to the inside, it is PET film, lithium alloy, and copper foil, and the rolling and compounding are completed through the rolling roller 15; when the copper foil is unwound, the cleaning cotton shell on the cleaning rod 8 cleans the dust and impurities on its surface;

[0042] When it is necessary to change the width of the finished material, adjust the cutting knife 18, start the brake motor 10, drive the bidirectional threaded rod 11 to rotate, the bidirectional threaded rod 11 drives the slider 12 to move, the slider 12 drives the mounting plate 9 at the bottom to move, the mounting plate 9 drives the first electric push rod 17 to move, and the first electric push rod 17 drives the cutting knife 18 to move until the distance between the two cutting knives 18 is the required width; the rolling device of the present application not only has high efficiency, but also after rolling, the distance between the cutting knives 18 can be freely adjusted, which is convenient for freely adjusting according to the required finished materials of different widths and is convenient for use, and the impurities on the surface of the copper foil can be cleaned before rolling.

[0043] All the technical features in this embodiment can be freely combined according to actual needs.

[0044] The above embodiments are the preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A lithium alloy strip composite rolling device for lithium batteries, comprising an outer box (1), characterized in that, A copper foil unwinding roller (2), a lithium alloy unwinding roller (3), a PET unwinding roller (4), a waste PET winding roller (5), and a finished product winding roller (6) are rotatably connected inside the outer box (1). A rolling mechanism is arranged inside the outer box (1). An installation frame (7) is fixedly installed inside the outer box (1). A cleaning rod (8) is arranged at the bottom of the installation frame (7). An installation plate (9) is fixedly installed inside the outer box (1). A brake motor (10) is fixedly installed on the side wall of the installation plate (9). The output end of the brake motor (10) is fixedly installed with a bidirectional threaded rod (11). A slider (12) is threadedly connected to the bidirectional threaded rod (11). The slider (12) is slidably connected to the installation plate (9). A connecting plate (16) is fixedly installed at the bottom of the slider (12). A first electric push rod (17) is fixedly installed at the bottom of the connecting plate (16). A cutting knife (18) is installed at the output end of the first electric push rod (17).

2. The lithium alloy strip composite rolling device for a lithium battery according to claim 1, wherein, The rolling mechanism includes a second electric push rod (13) fixedly installed inside the outer box (1). The output end of the second electric push rod (13) is fixedly installed with a gantry (14). A rolling roller (15) is rotatably connected to the bottom of the gantry (14).

3. A lithium alloy strip composite rolling device for a lithium battery according to claim 1, characterized in that, A U-shaped frame (22) is fixedly installed inside the outer box (1). An auxiliary wheel (23) is rotatably connected to the U-shaped frame (22).

4. A lithium alloy strip composite rolling device for a lithium battery according to claim 1, characterized in that, A plug rod (19) is fixedly installed at the top of the cleaning rod (8).

5. A lithium alloy strip composite rolling device for a lithium battery according to claim 1, characterized in that, A slot (20) is formed at the bottom of the installation frame (7). The slot (20) is matched with the plug rod (19).

6. The lithium alloy strip composite rolling device for a lithium battery according to claim 5, characterized in that A bolt (21) is threadedly connected to the side wall of the installation frame (7).

7. A lithium alloy strip composite rolling device for a lithium battery according to claim 1, characterized in that A collection box (24) is arranged inside the outer box (1).

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