Punching device for pole piece and lithium battery roller press integrated machine comprising same

Abstract

The application discloses a kind of pole piece punching device and contain its lithium battery roll integrated machine, the pole piece punching device includes rack, lower roller, upper roller, two upper mounting plates, two lifting mechanisms and two regulators, the lower roller is rotatably connected in the rack, the upper roller is located directly above the lower roller, and the two ends of the upper roller are rotatably connected to two upper mounting plates respectively, two lifting mechanisms are connected to the top end of two upper mounting plates respectively and drive the lifting movement of the upper mounting plate and the upper roller, to adjust the spacing between the upper roller and the lower roller, two regulators are respectively abutted to the bottom end of two upper mounting plates and used to adjust the height of the upper mounting plate and the upper roller. So that the processing precision of pole piece punching device is high, guarantee the consistency of pole piece punching. At the same time, it is beneficial to popularize, and significantly reduces the cost for large lithium battery factory.

Description

Technical Field

[0001] This invention relates to an electrode punching device and a lithium battery rolling press containing the same. Background Technology

[0002] With the continuous development of lithium-ion batteries, they are widely used in various digital products, electric vehicles, energy storage batteries, and other fields. They are mainly composed of positive electrode sheets, negative electrode sheets, separators, electrolytes, and casings. For current consumable lithium-ion batteries and energy storage batteries, which have limitations in cycle life, electrode perforation can effectively improve the cycle life. Currently, in large lithium battery factories, electrode perforation equipment is separate from the lithium battery rolling mill. However, the processing precision of electrode perforation is relatively low, and the consistency of perforated electrodes is poor. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings of existing devices. This invention provides an electrode punching device and a lithium battery rolling press including the same.

[0004] This invention is achieved through the following technical solution:

[0005] An electrode punching device includes a frame, a lower roller, an upper roller, two upper mounting plates, two lifting mechanisms, and two adjusters. The lower roller is rotatably connected to the frame. The upper roller is located directly above the lower roller, and both ends of the upper roller are rotatably connected to the two upper mounting plates. The two lifting mechanisms are respectively connected to the top ends of the two upper mounting plates and drive the upper mounting plates and the upper roller to move up and down, thereby adjusting the distance between the upper roller and the lower roller. The two adjusters abut against the bottom ends of the two upper mounting plates and are used to adjust the height of the upper mounting plates and the upper roller.

[0006] Furthermore, the electrode punching device also includes two lower mounting plates, both of which are fixedly installed inside the frame, and the two ends of the lower roller are rotatably connected to the two lower mounting plates respectively.

[0007] Furthermore, both of the adjusters include a movable block, the bottom end of which is disposed on the lower mounting plate and is movable on the lower mounting plate, and the top of the movable block has an inclined adjustment surface that abuts against the bottom end of the upper mounting plate.

[0008] Furthermore, both of the regulators include a mounting base, which is fixedly mounted on the lower mounting plate. The mounting base has an adjustment hole, and the moving block is located within the adjustment hole and can move within the adjustment hole.

[0009] Furthermore, the mounting base has a guide hole that communicates with the adjustment hole. The guide hole is recessed vertically downward from the top surface of the mounting base, and the bottom end of the upper mounting plate is inserted into the guide hole and moves up and down within the guide hole.

[0010] Furthermore, the adjuster also includes an adjusting seat and a rotating rod. The adjusting seat is fixedly installed at the front end of the mounting base, and the rotating rod is rotatably connected to the adjusting seat. One end of the rotating rod protrudes from the outer surface of the adjusting seat, and the other end of the rotating rod is threaded to the moving block. The rotating rod is rotated to drive the moving block to move within the adjusting hole.

[0011] Furthermore, the electrode punching device also includes two guide components, both of which are connected inside the frame and respectively connected to the two upper mounting plates, so as to realize the lifting and lowering movement of the two upper mounting plates on the frame.

[0012] Furthermore, each of the two guide components includes a slider and a guide rail. The guide rail is vertically arranged and connected to the frame. The two sliders are respectively mounted on the two upper mounting plates and slide on the two guide rails.

[0013] Furthermore, the diameter of the upper roller is 10-500 mm;

[0014] And / or, the diameter of the lower roller is 10-500 mm.

[0015] A lithium battery rolling mill includes an electrode punching device as described above.

[0016] The beneficial effects of this invention are as follows:

[0017] The electrode punching device and the lithium battery rolling mill comprising the present invention utilize two lifting mechanisms to drive the lifting and lowering of two upper mounting plates, thereby achieving preliminary adjustment of the gap between the upper and lower rollers. Two adjusters are used to adjust the height of the two upper mounting plates, achieving precise adjustment of the gap between the upper and lower rollers. This results in high processing accuracy for the electrode punching device, ensuring consistency in electrode punching. Furthermore, the electrode punching device can be integrated into various lithium battery rolling mills, allowing for flexible integration into the space of various lithium battery rolling mills, facilitating widespread adoption and significantly reducing costs for large lithium battery manufacturers. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the electrode punching device according to an embodiment of the present invention.

[0019] Figure 2This is a schematic diagram of the front view structure of the electrode punching device according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of the electrode punching device according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] Rack 1

[0023] Lower roller 2

[0024] Upper roller 3

[0025] Upper mounting plate 4

[0026] Lifting mechanism 5

[0027] Regulator 6

[0028] Move block 61

[0029] Tilt adjustment surface 611

[0030] Mounting base 62

[0031] Adjustment hole 621

[0032] Rotating rod 63

[0033] Adjustment seat 64

[0034] Lower mounting plate 7

[0035] Guide component 8

[0036] Guide rail 81

[0037] Slider 82 Detailed Implementation

[0038] The following description of the embodiments is taken with reference to the accompanying drawings, which illustrate specific embodiments in which the invention can be implemented.

[0039] This embodiment discloses a lithium battery rolling press integrated machine, which includes a rolling press and an electrode punching device. The rolling press is used to press the electrode sheet, and the electrode punching device is used to punch holes in the electrode sheet.

[0040] like Figure 1 , Figure 2 and Figure 3As shown, the electrode punching device includes a frame 1, a lower roller 2, an upper roller 3, two upper mounting plates 4, two lifting mechanisms 5, and two adjusters 6. The lower roller 2 is rotatably connected to the frame 1. The upper roller 3 is located directly above the lower roller 2, and both ends of the upper roller 3 are rotatably connected to the two upper mounting plates 4. The two lifting mechanisms 5 are respectively connected to the top of the two upper mounting plates 4 and drive the upper mounting plates 4 and the upper roller 3 to move up and down, so as to adjust the distance between the upper roller 3 and the lower roller 2. The two adjusters 6 are respectively abutted against the bottom of the two upper mounting plates 4 and are used to adjust the height of the upper mounting plates 4 and the upper roller 3.

[0041] Two lifting mechanisms 5 are respectively connected to the top of the two upper mounting plates 4. The two lifting mechanisms 5 are used to drive the two upper mounting plates 4 to move up and down, thereby causing the two ends of the upper roller 3 to move up and down respectively, thus realizing the movement of the upper roller 3 in the direction of approaching or moving away from the lower roller 2. Two adjusters 6 are respectively abutted against the bottom of the two upper mounting plates 4, so that the two adjusters 6 act on the two upper mounting plates 4 respectively and are used to adjust the height of the upper mounting plates 4, thereby realizing the movement of the two ends of the upper roller 3 in the direction of approaching or moving away from the lower roller 2 respectively. By driving the two upper mounting plates 4 to move up and down through the two lifting mechanisms 5, the initial adjustment of the gap between the upper roller 3 and the lower roller 2 is achieved. By adjusting the height of the two upper mounting plates 4 through the two adjusters 6, the precise adjustment of the gap between the upper roller 3 and the lower roller 2 is achieved, resulting in high processing accuracy of the electrode punching device. Moreover, the two lifting mechanisms 5 and the two upper mounting plates 4 can be adjusted at any time according to the electrode thickness tolerance, ensuring the consistency of electrode punching.

[0042] The electrode punching device in this embodiment can be integrated into the rolling mill of various lithium batteries. The overall structure of the electrode punching device is 20-50mm long, 20-500mm wide, and 100-50mm high. It can be flexibly integrated into the space of various lithium battery rolling mills, which is conducive to promotion and significantly reduces costs for large lithium battery manufacturers.

[0043] The drilling speed of the electrode punching device is determined by the diameter of the upper roller 3 and the lower roller 2. In practical applications, the diameter of the upper roller 3 is 10-500mm and the diameter of the lower roller 2 is 10-500mm, thus allowing for certain control over the rotation speed of the upper roller 3 and the lower roller 2.

[0044] The lifting mechanism 5 may include a servo motor, which is fixedly mounted on the frame 1. The movable end of the servo motor is located inside the frame 1 and connected to the upper mounting plate 4. The servo motor lowers the upper roller 3 to a certain stroke to achieve initial adjustment. The electrode punching device does not require a drive mechanism for conveying the electrode sheets. The electrode sheets can be conveyed through the drive mechanism in the roller press. During the electrode punching process, no motor drive is needed. The upper roller 3 and lower roller 2 are driven to punch holes through the electrode sheet transmission, achieving simultaneous pressing and punching of the electrode sheets, effectively reducing costs.

[0045] The lithium battery rolling mill also includes a dust removal device, which removes dust from the electrode sheets after they have been perforated.

[0046] The electrode punching device also includes two lower mounting plates 7, both of which are fixedly installed inside the frame 1. The two ends of the lower roller 2 are rotatably connected to the two lower mounting plates 7 respectively. In this embodiment, the two ends of the lower roller 2 are rotatably connected to the two lower mounting plates 7 respectively via bearings, and the two ends of the upper roller 3 are rotatably connected to the two upper mounting plates 4 respectively via bearings.

[0047] Both adjusters 6 include a movable block 61. The bottom end of the movable block 61 is mounted on the lower mounting plate 7 and can move on the lower mounting plate 7. The top of the movable block 61 has a tilt adjustment surface 611, which abuts against the bottom end of the upper mounting plate 4. The bottom end of the upper mounting plate 4 abuts against the tilt adjustment surface 611. By moving the movable block 61, the adjuster 6 drives the upper mounting plate 4 to move up and down for fine adjustment. The movement and fine adjustment are convenient and have high precision.

[0048] Both adjusters 6 include a mounting base 62, which is fixedly mounted on the lower mounting plate 7. The mounting base 62 has an adjustment hole 621, within which a moving block 61 is located and can move. The adjustment hole 621 acts as a constraint, ensuring that the moving block 61 moves horizontally within the adjustment hole 621 of the mounting base 62, and that the moving block 61 moves in a predetermined direction without displacement or misalignment, thus achieving high stability. The bottom of the moving block 61 is flat and fits into the adjustment hole 621, allowing for smooth horizontal movement. Preferably, both sides of the moving block 61 are also flat and fit into the inner wall of the adjustment hole 621.

[0049] The mounting base 62 has a guide hole that communicates with the adjustment hole 621. The guide hole is recessed vertically downward from the top surface of the mounting base 62. The bottom end of the upper mounting plate 4 is inserted into the guide hole and moves up and down within it. Specifically, the guide hole has a guiding function, and the bottom end of the upper mounting plate 4 has a downwardly protruding guide portion that is inserted into the guide hole and moves up and down within it. This prevents the upper mounting plate 4 from shifting or misaligning during its movement up and down on the mounting base 62, greatly improving the stability of the electrode drilling device.

[0050] The regulator 6 also includes a rotating rod 63 and an adjusting seat 64. The adjusting seat 64 is fixedly installed on the front end of the mounting base 62. The rotating rod 63 is rotatably connected to the adjusting seat 64, with one end of the rotating rod 63 protruding from the outer surface of the adjusting seat 64 and the other end threadedly connected to the moving block 61. Rotating the rotating rod 63 drives the moving block 61 to move within the adjusting hole 621. When the operator applies force to the end of the rotating rod 63 protruding from the outer surface of the adjusting seat 64, the rotating rod 63 will rotate, causing the moving block 61 to move within the adjusting hole 621. This allows for convenient adjustment with high fine-tuning precision. Simultaneously, the adjusting seat 64 ensures stable rotation of the rotating rod 63 without displacement or misalignment, resulting in higher stability. The end of the rotating rod 63 protruding from the outer surface of the adjusting seat 64 has a knob for easy manual rotation.

[0051] In this embodiment, the electrode punching device further includes two guide components 8, both of which are connected inside the frame 1 and respectively connected to two upper mounting plates 4, so as to realize the lifting and lowering movement of the two upper mounting plates 4 on the frame 1. The guide components 8 have a guiding function, which makes the lifting and lowering movement of the upper mounting plates 4 on the frame 1 more stable and effectively avoids the upper mounting plates 4 from shifting or misaligning during the initial adjustment.

[0052] Both guide components 8 include sliders 82 and guide rails 81. The guide rails 81 are vertically arranged and connected to the frame 1. The two sliders 82 are respectively mounted on the two upper mounting plates 4 and slide on the two guide rails 81. By moving the sliders 82 up and down on the guide rails 81, the stability of the upper mounting plates 4 moving up and down on the frame 1 is improved, effectively preventing the upper mounting plates 4 from shifting or misaligning during initial adjustment. At the same time, the structure is simple and the cost is low.

[0053] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. An electrode punching device, characterized in that, It includes a frame, a lower roller, an upper roller, two upper mounting plates, two lifting mechanisms, and two adjusters. The lower roller is rotatably connected to the frame. The upper roller is located directly above the lower roller, and both ends of the upper roller are rotatably connected to the two upper mounting plates. The two lifting mechanisms are respectively connected to the top ends of the two upper mounting plates and drive the upper mounting plates and the upper roller to move up and down, thereby adjusting the distance between the upper roller and the lower roller. The two adjusters are respectively abutted against the bottom ends of the two upper mounting plates and are used to adjust the height of the upper mounting plates and the upper roller.

2. The electrode drilling device as described in claim 1, characterized in that, The electrode punching device also includes two lower mounting plates, both of which are fixedly installed inside the frame, and the two ends of the lower roller are rotatably connected to the two lower mounting plates respectively.

3. The electrode drilling device as described in claim 2, characterized in that, Both of the adjusters include a movable block, the bottom end of which is disposed on the lower mounting plate and is movable on the lower mounting plate, and the top of the movable block has an inclined adjustment surface that abuts against the bottom end of the upper mounting plate.

4. The electrode drilling device as described in claim 3, characterized in that, Both adjusters include a mounting base, which is fixedly mounted on the lower mounting plate. The mounting base has an adjustment hole, and the moving block is located in the adjustment hole and can move within the adjustment hole.

5. The electrode drilling device as described in claim 4, characterized in that, The mounting base has a guide hole that communicates with the adjustment hole. The guide hole is recessed vertically downward from the top surface of the mounting base. The bottom end of the upper mounting plate is inserted into the guide hole and moves up and down within the guide hole.

6. The electrode drilling device as described in claim 4, characterized in that, The adjuster also includes an adjusting seat and a rotating rod. The adjusting seat is fixedly installed at the front end of the mounting base. The rotating rod is rotatably connected to the adjusting seat, with one end of the rotating rod protruding from the outer surface of the adjusting seat and the other end of the rotating rod threadedly connected to the moving block. The rotating rod is rotated to drive the moving block to move within the adjusting hole.

7. The electrode drilling device as described in claim 1, characterized in that, The electrode punching device also includes two guide components, both of which are connected inside the frame and respectively connected to the two upper mounting plates, so as to realize the lifting and lowering movement of the two upper mounting plates on the frame.

8. The electrode drilling device as described in claim 7, characterized in that, Both of the guide components include sliders and guide rails. The guide rails are vertically arranged and connected to the frame. The two sliders are respectively mounted on the two upper mounting plates and slide on the two guide rails.

9. The electrode drilling device as described in claim 1, characterized in that, The diameter of the upper roller is 10-500mm; And / or, the diameter of the lower roller is 10-500 mm.

10. A lithium battery rolling mill integrated machine, characterized in that, It includes the electrode punching device as described in any one of claims 1-9.

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