A high-speed pole piece cutting device and lamination equipment

Abstract

The utility model discloses a high-speed pole piece cutting device and lamination equipment. The high-speed pole piece cutting device includes: a cutting mechanism, which includes at least two cutting units, each cutting unit has a cutting knife suitable for moving up and down in a vertical direction, for cutting the pole piece strip to be cut; a driving mechanism, which is arranged in front of the cutting mechanism, for conveying the pole piece strip to be cut to the bottom of the cutting unit; a first belt conveying mechanism, which is arranged behind the cutting mechanism, for conveying the cut pole piece out of the high-speed pole piece cutting device; at least one second belt conveying mechanism, the second belt conveying mechanism is arranged between two adjacent cutting units, for conveying the cut pole piece to the first belt conveying mechanism. The utility model adopts at least two cutting units to cut the pole piece strip at the same time, and at least two pole pieces can be obtained in one cutting, which increases the number of pole pieces that can be obtained in a single cutting, thereby improving the slicing rate.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, in particular to a high-speed pole piece cutting device and a lamination device. Background Art

[0002] With the rapid development of the lithium battery industry, the production efficiency of lithium batteries is required to be higher and higher. At present, the multi-piece stacking machine technology is one of the most advanced lithium-ion battery manufacturing technologies, among which the pole piece cutting process is an important process before the pole pieces are stacked. In the lithium-ion battery production line, the pole piece cutting device is used to cut the pole piece strip into individual pole pieces for assembling the battery, so the slicing efficiency of the pole piece cutting device directly affects the overall production rate of the battery. However, the current pole piece cutting device adopts a single-knife cutting method, and only one pole piece can be obtained each time it is cut. The slicing efficiency is difficult to improve, which limits the stacking efficiency, and then affects the battery production efficiency of the entire production line, which is not conducive to improving work efficiency and reducing production costs. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a high-speed pole piece cutting device and a laminating device which can improve the slicing rate.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A high-speed electrode sheet cutting device comprises: a cutting mechanism comprising at least two cutting units, each cutting unit having a cutting knife suitable for moving up and down in a vertical direction, for cutting the electrode sheet strip to be cut; a driving mechanism, which is arranged in front of the cutting mechanism, for conveying the electrode sheet strip to be cut to below the cutting unit; a first belt conveying mechanism, which is arranged behind the cutting mechanism, for conveying the cut electrode sheet out of the high-speed electrode sheet cutting device; and at least one second belt conveying mechanism, which is arranged between two adjacent cutting units, for conveying the cut electrode sheet to the first belt conveying mechanism.

[0006] Preferably, the cutting unit comprises a cutting knife and a cutting drive motor for driving the cutting knife to move up and down in a vertical direction.

[0007] Preferably, the driving mechanism includes a driving roller, a driving motor for driving the driving roller to rotate, a pressure roller, and a pressure roller cylinder for driving the pressure roller to move up and down in a vertical direction.

[0008] Preferably, the first belt conveying mechanism includes a first belt, a first belt driving roller, and a first belt driving motor for driving the first belt driving roller to rotate.

[0009] Preferably, the second belt conveying mechanism includes a second belt, a second belt driving roller, and a second belt driving motor for driving the second belt driving roller to rotate.

[0010] A lamination device comprises the high-speed pole piece cutting device mentioned above.

[0011] The beneficial technical effect of the utility model is that the above-mentioned high-speed pole piece cutting device adopts at least two cutting units to cut the pole piece material strip at the same time, and at least two pole pieces can be obtained by one cutting, which increases the number of pole pieces that can be obtained by a single cutting, thereby improving the slicing rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the high-speed pole piece cutting device of the utility model;

[0013] Figure 2 It is a side view of the high-speed pole piece cutting device of the utility model;

[0014] Figure 3 It is a top view of the high-speed pole piece cutting device of the utility model. DETAILED DESCRIPTION

[0015] In order to enable ordinary technicians in the field to more clearly understand the purpose, technical solutions and advantages of the utility model, the utility model is further explained below in conjunction with the accompanying drawings and embodiments.

[0016] like Figure 1-3 As shown, in one embodiment of the present invention, the high-speed pole piece cutting device includes a cutting mechanism, a driving mechanism 500 , a first belt conveying mechanism 100 and a second belt conveying mechanism 300 .

[0017] The cutting mechanism includes two cutting units, namely a first cutting unit 200 and a second cutting unit 400. The first cutting unit 200 includes a cutting knife 201 for cutting the pole piece strip to be cut and a cutting drive motor 202 for driving the cutting knife 201 to move up and down in a vertical direction; the second cutting unit 400 includes a cutting knife 401 for cutting the pole piece strip to be cut and a cutting drive motor 402 for driving the cutting knife 401 to move up and down in a vertical direction.

[0018] The driving mechanism 500 is arranged in front of the cutting mechanism, and is used to convey the electrode strip to be cut to the bottom of the first cutting unit 200 and the second cutting unit 400. The driving mechanism 500 includes a driving roller 501, a driving motor 504 for driving the driving roller 501 to rotate, a pressing roller 502, and a pressing roller cylinder 503 for driving the pressing roller 502 to move up and down in the vertical direction.

[0019] The first belt conveyor mechanism 100 is arranged behind the cutting mechanism and is used to convey the cut pole pieces out of the high-speed pole piece cutting device. The first belt conveyor mechanism 100 includes a first belt 103, a first belt drive roller 102 and a first belt drive motor 101 for driving the first belt drive roller 102 to rotate.

[0020] The second belt conveyor mechanism 300 is disposed between the first cutting unit 200 and the second cutting unit 400, and is used to convey the cut pole pieces to the first belt conveyor mechanism 100. The second belt conveyor mechanism 300 includes a second belt 303, a second belt drive roller (not shown), and a second belt drive motor 301 for driving the second belt drive roller to rotate.

[0021] The working process of the high-speed pole piece cutting device of this embodiment is as follows:

[0022] First, the pole piece strip is placed above the driving roller 501 of the driving mechanism 500, and the pressing roller cylinder 503 drives the pressing roller 502 to press the pole piece strip onto the driving roller 501, and the driving motor 504 drives the driving roller 501 to rotate and transport the pole piece strip to the bottom of the first cutting unit 200 and the second cutting unit 400;

[0023] Secondly, the cutting knife 201 moves up and down in the vertical direction under the driving of the cutting drive motor 202, and the cutting knife 401 moves up and down in the vertical direction under the driving of the cutting drive motor 402. The cutting knife 201 and the cutting knife 401 cut the pole piece strip at the same time to obtain two pole pieces;

[0024] Finally, the second belt drive motor 301 drives the second belt 303 to rotate, and transports the pole piece between the cutting knife 201 and the cutting knife 401 to the first belt 103 of the first belt conveying mechanism 100. Driven by the first belt drive motor 101 and the first belt drive roller 102, the first belt 103 transports the two pole pieces out of the high-speed pole piece cutting device.

[0025] The high-speed electrode sheet cutting device of this embodiment uses two cutting units to cut the electrode sheet strip at the same time. Two electrode sheets can be obtained in one cutting, which increases the number of electrode sheets that can be obtained in a single cutting, thereby improving the slicing rate.

[0026] In some other embodiments of the utility model, the cutting mechanism also includes 3, 4, 5 or other number of cutting units, and the number of the second belt conveyor mechanism is also increased accordingly, and a second belt conveyor mechanism is arranged between each two adjacent cutting units. By using more than two cutting units to cut the pole piece material strip at the same time, more than two pole pieces can be obtained in one cutting, which increases the number of pole pieces that can be obtained in a single cutting, thereby improving the slicing rate.

[0027] The utility model also provides a lamination device, which comprises the high-speed pole piece cutting device mentioned above.

[0028] The above description is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments, and all equivalent changes or modifications made within the scope of the claims should fall within the protection scope of the utility model.

Claims

1. A high-speed electrode cutting device, characterized in that: Included are: A cutting mechanism, comprising at least two cutting units, each of which has a cutting knife adapted to move up and down in a vertical direction, for cutting off the pole piece strip to be cut; A driving mechanism, which is arranged in front of the cutting mechanism and is used to convey the electrode strip to be cut to the bottom of the cutting unit; A first belt conveying mechanism, which is arranged behind the cutting mechanism and is used to convey the cut pole pieces out of the high-speed pole piece cutting device; At least one second belt conveyor mechanism, wherein the second belt conveyor mechanism is arranged between two adjacent cutting units and is used for conveying the cut pole pieces to the first belt conveyor mechanism.

2. The high-speed electrode cutting device according to claim 1, characterized in that: The cutting unit includes a cutting blade and a cutting drive motor for driving the cutting blade to move up and down in a vertical direction.

3. The high-speed electrode cutting device according to claim 1, characterized in that: The driving mechanism includes a driving roller, a driving motor for driving the driving roller to rotate, a pressing roller, and a pressing roller cylinder for driving the pressing roller to move up and down in a vertical direction.

4. The high-speed electrode cutting device according to claim 1, characterized in that: The first belt conveying mechanism includes a first belt, a first belt driving roller, and a first belt driving motor for driving the first belt driving roller to rotate.

5. The high-speed electrode cutting device according to claim 2, characterized in that: The second belt conveying mechanism includes a second belt, a second belt driving roller, and a second belt driving motor for driving the second belt driving roller to rotate.

6. A lamination device, characterized in that: The lamination equipment includes a high-speed pole piece cutting device as described in any one of claims 1-5.

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