Lithium battery lithium metal negative electrode sheet production device

Abstract

The utility model discloses a lithium battery lithium metal negative electrode sheet production device, which belongs to the technical field of lithium battery lithium negative electrode material sheet production, and comprises a working table, two groups of side plates are symmetrically arranged at the upper end of the working table, a conveying roller is arranged between the side plates, a first motor is fixed on one side wall of each side plate, and a concave cavity is arranged on the inner wall of each side plate. According to the utility model, by designing a group of adjusting mechanisms consisting of the two-way screw rod, the screw block, the telescopic rod and the knob, when the distance between the first limiting ring and the second limiting ring is adjusted according to the width of the lithium metal material, the two-way screw rod can be driven by the knob, so that the screw block drives the first limiting ring to move; the first limiting ring drives the second limiting ring to move through the telescopic rod, then synchronous adjustment is achieved, meanwhile, the telescopic rod can guarantee the vertical adjusting performance of the auxiliary roller, and the adjusting efficiency and the adjusting performance of the device are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery lithium negative electrode material film making, in particular to a lithium battery lithium metal negative electrode film making device. Background Art

[0002] Lithium battery is a kind of battery that uses lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. Lithium battery has the characteristics of high voltage, high capacity, low consumption, no memory effect, small size, small internal resistance, low self-discharge, and many cycles. With the development of science and technology, lithium batteries have now become the mainstream. In the lithium battery industry, the existing battery negative electrode materials are mostly single-die punched during sheet production and then cut into single negative electrode sheets after passing through a traction mechanism.

[0003] In the process of making negative electrode materials for lithium batteries, the raw materials are usually input into the slicing mechanism for slicing using a limiting device. For example, patent No. CN202223097337.8 discloses a lithium battery slicing and forming device, including a support base, a fixed frame is fixedly installed on the top middle section of the support base, and a cutting knife is arranged on the right side of the support base; an active roller is arranged at the inner bottom of the fixed frame, the active roller is driven by a motor, and a driven roller is arranged at the inner top of the fixed frame, the lithium battery pole piece passes through the active roller and the driven roller, and a roller structure is used to input the pole piece material.

[0004] Although the above patent can limit the conveying of negative electrode sheet materials through limiting rings, active rollers and driven rollers during use, so as to achieve the purpose of avoiding the deviation of negative electrode materials during conveying, and the spacing between the limiting rings can be adjusted, so as to facilitate the conveying and forming of electrodes of different widths.

[0005] However, in the actual adjustment process, the position of the limit ring needs to be adjusted independently one by one and cannot be implemented synchronously, thereby increasing the workload of the staff and reducing the overall adjustment efficiency of the device, which is not conducive to the efficient production of negative electrode materials. Therefore, a lithium battery lithium metal negative electrode production device is urgently needed to solve the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a lithium battery lithium metal negative electrode film making device.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A lithium battery lithium metal negative electrode film making device comprises a workbench, two groups of side plates are symmetrically installed on the upper end of the workbench, a conveying roller is installed between the side plates, a first motor is fixed on one side wall of the side plate, a concave cavity is opened on the inner wall of the side plate, a slider is installed in the concave cavity, an adjusting screw is installed on the top of the slider, auxiliary rollers are fixed between the sliders, a slide groove is opened on the upper end of the workbench, a bidirectional screw is installed in the slide groove, a knob is fixed at one end of the bidirectional screw, two groups of screw blocks are symmetrically sleeved on the bidirectional screw, a first limiting ring is fixed on the top of the screw block, a telescopic rod is fixed on the top of the first limiting ring, and a second limiting ring is fixed at one end of the telescopic rod.

[0009] Preferably, the side plate is welded to the workbench, the conveying roller is rotatably connected to the side plate, and the output shaft of the first motor is fixedly connected to one end of the conveying roller.

[0010] Preferably, the cavity is formed on the side plate, the slider is slidably connected to the cavity, the auxiliary roller is rotatably connected to the slider, one end of the adjusting screw is rotatably connected to the slider, and the adjusting screw is threadedly connected to the side plate.

[0011] Preferably, the slide groove is formed on the workbench, the bidirectional screw is rotatably connected to the slide groove, and the knob is fixedly connected to one end of the bidirectional screw.

[0012] Preferably, the screw block is threadedly connected to the bidirectional screw, the screw block is slidably connected to the slide groove, the first limiting ring is welded to the screw block, the conveying roller passes through the first limiting ring, the telescopic rod is fixedly connected to the first limiting ring and the second limiting ring, and the auxiliary roller passes through the second limiting ring.

[0013] Preferably, a cutting frame is provided on one side of the side plate, the cutting frame is welded to the workbench, and a carrying roller is rotatably installed in the cutting frame.

[0014] Preferably, a rotating shaft is provided at the upper end of the carrying roller, slitting knives are installed in an array on the rotating shaft, a second motor is fixed on the back wall of the cutting frame, and an output shaft of the second motor is fixedly connected to one end of the rotating shaft.

[0015] Beneficial technical effects of the utility model:

[0016] The utility model designs an adjustment mechanism consisting of a bidirectional screw, a screw block, a telescopic rod and a knob. When the spacing between the first limit ring and the second limit ring is adjusted according to the width of the lithium metal material, the bidirectional screw can be driven by the knob, and then the screw block drives the first limit ring to move, and the first limit ring then drives the second limit ring to move through the telescopic rod, thereby realizing synchronous adjustment. At the same time, the telescopic rod can ensure the up and down adjustment performance of the auxiliary roller, effectively improving the adjustment efficiency and adjustment performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a preferred embodiment of a lithium metal negative electrode film making device for a lithium battery according to the utility model;

[0018] Figure 2 A back view of a preferred embodiment of a lithium metal negative electrode film making device for a lithium battery according to the utility model;

[0019] Figure 3 It is a structural schematic diagram of an adjusting mechanism in a preferred embodiment of a lithium metal negative electrode film making device for a lithium battery according to the utility model;

[0020] Figure 4 In a preferred embodiment of a lithium metal negative electrode film making device for a lithium battery according to the utility model Figure 3 Enlarged view of point A in the middle.

[0021] The following are the descriptions of the reference numerals:

[0022] 1. Conveying roller; 2. Slide; 3. Bidirectional screw; 4. Screw block; 5. First motor; 6. Side plate; 7. Second limiting ring; 8. Adjusting screw; 9. Auxiliary roller; 10. Concave cavity; 11. Second motor; 12. Slitting knife; 13. Cutting frame; 14. Rotating shaft; 15. Loading roller; 16. Workbench; 17. First limiting ring; 18. Knob; 19. Telescopic rod; 20. Slider. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0024] like Figure 1-Figure 4As shown, a lithium metal negative electrode preparation device for a lithium battery provided in this embodiment includes a workbench 16, two groups of side panels 6 are symmetrically installed on the upper end of the workbench 16, a conveying roller 1 is installed between the side panels 6, a first motor 5 is fixed on one side wall of the side panel 6, a concave cavity 10 is opened on the inner wall of the side panel 6, a slider 20 is installed in the concave cavity 10, an adjusting screw 8 is installed on the top of the slider 20, an auxiliary roller 9 is fixed between the sliders 20, a slide groove 2 is opened on the upper end of the workbench 16, a bidirectional screw 3 is installed in the slide groove 2, a knob 18 is fixed at one end of the bidirectional screw 3, two groups of screw blocks 4 are symmetrically sleeved on the bidirectional screw 3, a first limiting ring 17 is fixed on the top of the screw block 4, a telescopic rod 19 is fixed on the top of the first limiting ring 17, and a second limiting ring 7 is fixed at one end of the telescopic rod 19.

[0025] The side plate 6 is welded to the workbench 16, the conveying roller 1 is rotatably connected to the side plate 6, the output shaft of the first motor 5 is fixedly connected to one end of the conveying roller 1, and the first motor 5 drives the conveying roller 1 to rotate to convey the negative electrode material.

[0026] The concave cavity 10 is formed on the side plate 6, the slider 20 is slidably connected to the concave cavity 10, the auxiliary roller 9 is rotatably connected to the slider 20, one end of the adjusting screw 8 is rotatably connected to the slider 20, and the adjusting screw 8 is threadedly connected to the side plate 6. The adjusting screw 8 is rotated so that it can drive the slider 20 to slide in the concave cavity 10 under the action of the thread, and then the distance between the conveying roller 1 and the auxiliary roller 9 is adjusted according to the thickness of the negative electrode material.

[0027] The slide groove 2 is formed on the workbench 16 , the bidirectional screw rod 3 is rotatably connected to the slide groove 2 , the knob 18 is fixedly connected to one end of the bidirectional screw rod 3 , and the knob 18 can drive the bidirectional screw rod 3 to rotate.

[0028] The screw block 4 is connected to the bidirectional screw 3 by threads, the screw block 4 is slidably connected to the slide groove 2, the first limit ring 17 is welded to the screw block 4, the conveying roller 1 passes through the first limit ring 17, the telescopic rod 19 is fixedly connected to the first limit ring 17 and the second limit ring 7, and the auxiliary roller 9 passes through the second limit ring 7. During the rotation of the bidirectional screw 3, the screw block 4 drives the first limit ring 17 to move under the action of the thread, and the first limit ring 17 then drives the second limit ring 7 to move through the telescopic rod 19, thereby realizing synchronous adjustment. At the same time, the telescopic rod 19 can ensure the up and down adjustment performance of the auxiliary roller 9, effectively improving the adjustment efficiency and adjustment performance of the device.

[0029] A cutting frame 13 is provided on one side of the side plate 6 , and the cutting frame 13 is welded to the workbench 16 . A bearing roller 15 is rotatably installed in the cutting frame 13 , and the bearing roller 15 bears the lithium metal material to ensure its slitting effect.

[0030] A rotating shaft 14 is provided at the upper end of the carrying roller 15, and slitting knives 12 are installed in an array on the rotating shaft 14. A second motor 11 is fixed on the back wall of the cutting frame 13. The output shaft of the second motor 11 is fixedly connected to one end of the rotating shaft 14. The second motor 11 drives the rotating shaft 14 to rotate, and then the slitting knife 12 slits the negative electrode material.

[0031] The working principle of the device is as follows: the external power supply is turned on, and the adjusting screw 8 is rotated according to the thickness of the negative electrode raw material of the lithium battery, so that the slider 20 can be driven to slide in the concave cavity 10 under the action of the thread, and then the distance between the conveying roller 1 and the auxiliary roller 9 is adjusted according to the thickness of the negative electrode raw material of the lithium battery. Then, when adjusting the distance between the first limiting ring 17 and the second limiting ring 7 according to the width of the negative electrode raw material of the lithium battery, the two-way screw 3 can be driven by the knob 18, so that the screw block 4 drives the first limiting ring 17 to move, and the first limiting ring 17 drives the second limiting ring 7 to move through the telescopic rod 19, so as to achieve synchronous adjustment. At the same time, the telescopic rod 19 can ensure the up and down adjustment performance of the auxiliary roller 9, effectively improving the adjustment efficiency and adjustment performance of the device. After the adjustment is completed, the first motor 5 drives the conveying roller 1 to rotate to convey the negative electrode raw material of the lithium battery. When conveying to the slitting knife 12, the second motor 11 is manually controlled to drive the rotating shaft 14 to rotate, and the slitting knife 12 cuts the negative electrode raw material of the lithium battery to form negative electrode sheets.

[0032] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A lithium battery lithium metal negative electrode film making device, characterized in that: The invention comprises a workbench (16), wherein two groups of side plates (6) are symmetrically mounted on the upper end of the workbench (16), a conveying roller (1) is mounted between the side plates (6), a first motor (5) is fixed on one side wall of the side plate (6), a concave cavity (10) is opened on the inner wall of the side plate (6), a slider (20) is mounted in the concave cavity (10), an adjusting screw (8) is mounted on the top of the slider (20), an auxiliary roller (9) is fixed between the sliders (20), a slide groove (2) is opened on the upper end of the workbench (16), a bidirectional screw (3) is mounted in the slide groove (2), a knob (18) is fixed at one end of the bidirectional screw (3), two groups of screw blocks (4) are symmetrically sleeved on the bidirectional screw (3), a first limiting ring (17) is fixed at the top of the screw block (4), a telescopic rod (19) is fixed at the top of the first limiting ring (17), and a second limiting ring (7) is fixed at one end of the telescopic rod (19).

2. A lithium battery lithium metal negative electrode film making device according to claim 1, characterized in that: The side plate (6) is welded to the workbench (16), the conveying roller (1) is rotatably connected to the side plate (6), and the output shaft of the first motor (5) is fixedly connected to one end of the conveying roller (1).

3. A lithium battery lithium metal negative electrode film making device according to claim 2, characterized in that: The concave cavity (10) is formed on the side plate (6), the slider (20) is slidably connected to the concave cavity (10), the auxiliary roller (9) is rotationally connected to the slider (20), one end of the adjusting screw (8) is rotationally connected to the slider (20), and the adjusting screw (8) is connected to the side plate (6) via a thread.

4. A lithium battery lithium metal negative electrode film making device according to claim 3, characterized in that: The slide groove (2) is formed on the workbench (16), the bidirectional screw rod (3) is rotatably connected to the slide groove (2), and the knob (18) is fixedly connected to one end of the bidirectional screw rod (3).

5. A lithium battery lithium metal negative electrode film making device according to claim 4, characterized in that: The screw block (4) is connected to the bidirectional screw rod (3) by threads, the screw block (4) is slidably connected to the slide groove (2), the first limiting ring (17) is welded to the screw block (4), the conveying roller (1) passes through the first limiting ring (17), the telescopic rod (19) is fixedly connected to the first limiting ring (17) and the second limiting ring (7), and the auxiliary roller (9) passes through the second limiting ring (7).

6. A lithium battery lithium metal negative electrode film making device according to claim 5, characterized in that: A cutting frame (13) is provided on one side of the side plate (6); the cutting frame (13) is welded to the workbench (16); and a bearing roller (15) is rotatably mounted inside the cutting frame (13).

7. A lithium battery lithium metal negative electrode film making device according to claim 6, characterized in that: A rotating shaft (14) is provided at the upper end of the bearing roller (15), slitting knives (12) are mounted in an array on the rotating shaft (14), a second motor (11) is fixed on the back wall of the cutting frame (13), and an output shaft of the second motor (11) is fixedly connected to one end of the rotating shaft (14).

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