Lithium battery pole piece crushing device

Abstract

The utility model discloses a lithium battery pole piece crushing device which comprises a feeding box, the feeding box is provided with a containing cavity, a feeding port is formed in the upper wall of the containing cavity, a plurality of discharging ports are formed in the lower wall of the containing cavity, the opening sizes of the discharging ports are sequentially decreased from left to right, and the discharging ports are opposite to the discharging port with the smallest opening size. A material pushing assembly used for pushing materials to move from right to left is arranged in the containing cavity. And the crushing box is provided with a crushing cavity communicated with the discharging ports, a plurality of crushing rollers are arranged on the left inner wall of the crushing box in the vertical direction, the lengths of the crushing rollers are sequentially decreased from bottom to top, the crushing roller with the shortest length is opposite to the discharging port with the largest opening size, and the crushing rollers are connected with a driving mechanism for driving the crushing rollers to rotate. According to the lithium battery pole piece crushing device with the structure, different degrees of crushing can be carried out according to the sizes of primarily crushed pole pieces, so that the screening and reworking operations of people are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pole piece crushing, in particular to a lithium battery pole piece crushing device. Background Art

[0002] At present, lithium batteries are primary batteries that use lithium metal or lithium alloy as the negative electrode material and non-aqueous electrolyte solution. After the service life of lithium batteries ends, lithium batteries need to be recycled. After recycling, the lithium batteries will first be discharged and disassembled. The positive and negative electrodes obtained have more than 90% valuable recycled materials. For this reason, people need to crush the positive and negative electrodes.

[0003] However, during the crushing process of the positive and negative electrode sheets, it was found that the uniformity of the positive and negative electrode sheets after the initial crushing was inconsistent, that is, there were still some larger structures that were not fully crushed. For this reason, after people use the existing crushing device to crush the electrode sheets for the first time, because the crushing device cannot crush the electrode sheets to different degrees according to the size of the electrode sheets after the initial crushing, people need to screen the electrode sheets for secondary or even multiple crushing, so that the processed electrode sheets can finally achieve the crushing effect. With this method, people need to screen the electrode sheets and rework them multiple times, which is time-consuming and inefficient. Utility Model Content

[0004] In view of the above shortcomings, the utility model proposes a lithium battery pole piece crushing device, which can crush the pole pieces to different degrees according to the size of the pole pieces after initial crushing, thereby reducing people's screening and rework operations, and further improving the crushing effect of the pole pieces.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A lithium battery pole piece crushing device comprises: a feed box, the feed box is provided with a cavity, the upper wall of the cavity is provided with a feed port, the lower wall of the cavity is provided with a plurality of discharge ports, the opening sizes of the plurality of discharge ports decrease successively from left to right, the discharge port is arranged opposite to the discharge port with the smallest opening size, a pushing assembly is arranged inside the cavity, the pushing assembly is used to push the material to move from right to left; a crushing box, the crushing box is provided with a crushing cavity connected to the discharge port, a plurality of crushing rollers are arranged along the vertical direction on the left inner wall of the crushing box, the lengths of the plurality of crushing rollers decrease successively from bottom to top, the plurality of crushing rollers are respectively arranged in one-to-one correspondence with the discharge ports, the shortest crushing roller is opposite to the discharge port with the largest opening size, and the plurality of crushing rollers are connected with a driving mechanism for driving them to rotate, so that the crushing rollers of different lengths can rotate to crush materials of different sizes.

[0007] According to the lithium battery pole piece crushing device of the embodiment of the utility model, there are at least the following beneficial effects: because a plurality of crushing rollers of different lengths are distributed from top to bottom, the crushing chamber can form a crushing area with a decreasing number of crushing times from left to right. When in use, the pole piece after initial crushing is placed in the cavity through the feed port, and then the pushing assembly is started, so that the pushing assembly drives the pole piece to move from right to left, so that pole pieces of different sizes pass through the discharge ports of different opening sizes and fall into the crushing areas with different crushing times. Finally, pole pieces at different falling positions are crushed by a single or multiple crushing rollers, so that larger pole pieces can be crushed twice or even multiple times, while smaller pole pieces can be crushed once, thereby achieving the effect of crushing to different degrees according to the size of the pole piece after rough crushing, further improving the uniformity of the pole piece after crushing, which is conducive to reducing the number of subsequent screening and rework of pole pieces, and further conducive to improving the crushing effect of the pole piece.

[0008] Furthermore, a plurality of cutting teeth are circumferentially arranged on the outer peripheral wall of the crushing roller, and the cutting teeth of two adjacent crushing rollers are staggered.

[0009] Furthermore, the driving mechanism comprises a plurality of motors, each of the crushing rollers is coaxially connected to the motor, the motor is located outside the crushing box, and the plurality of motors are electrically connected to a controller.

[0010] Furthermore, a mounting frame is provided on the side wall of the crushing box, and a plurality of mounting plates are arranged at intervals on the mounting frame along the vertical direction, and the plurality of motors are respectively mounted on the corresponding mounting plates.

[0011] Furthermore, the pushing assembly includes a pushing plate and a first cylinder, a telescopic rod of the first cylinder is connected to the pushing plate, and the first cylinder is installed on the outside of the feed box.

[0012] Furthermore, a feed hopper is provided at the upper end of the feed box, and the feed hopper is provided with a feed channel connected to the feed port. A second cylinder is provided at the upper end of the feed box, and the telescopic rod of the second cylinder is connected to a sealing plate, and the sealing plate is movably built into the feed channel so that the sealing plate can close or open the feed channel.

[0013] Furthermore, the first cylinder is connected to an air supply source via a first pipeline, the second cylinder is connected to the air supply source via a second pipeline, the first pipeline and the second pipeline are both provided with solenoid valves for opening and closing the pipelines, and the two solenoid valves are electrically connected to a controller.

[0014] Furthermore, the feed hopper is provided with an inclined surface whose end is connected to the feed port.

[0015] Furthermore, a collecting hopper is provided at the lower end of the crushing box. The collecting hopper is a conical structure, and a small port of the collecting hopper faces downward, so that people can collect the crushed materials easily.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a structural schematic diagram of an embodiment of a lithium battery pole piece crushing device of the utility model;

[0019] Figure 2 for Figure 1 An internal cross-sectional view of

[0020] Figure 3 for Figure 2 A schematic structural diagram of an embodiment of a partition in FIG.

[0021] In the figure: feed box 100, cavity 101, feed port 102, discharge port 103, feed hopper 110, second cylinder 120, sealing plate 130, partition 140, push assembly 200, push plate 210, first cylinder 220, crushing box 300, crushing cavity 301, crushing roller 310, cutting teeth 311, mounting frame 320, mounting plate 321, receiving hopper 330, guide plate 331, motor 400. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inside", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0024] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If the terms "first" or "second" are described, they are only used for descriptive purposes and cannot be understood to indicate or imply relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figures 1 to 3 A lithium battery pole piece crushing device comprises: a feed box 100 and a crushing box 300, wherein the feed box 100 is provided with a cavity 101, a feed port 102 is provided on the upper wall of the cavity 101, a plurality of discharge ports 103 are provided on the lower wall of the cavity 101, the opening sizes of the plurality of discharge ports 103 decrease from left to right, the discharge ports 103 are arranged opposite to the discharge port 103 with the smallest opening size, a pusher assembly 200 is arranged inside the cavity 101, and the pusher assembly 200 is used to push the material to move from right to left; The crushing box 300 is provided with a crushing chamber 301 connected with the discharge port 103. A plurality of crushing rollers 310 are arranged on the left inner wall of the crushing box 300 in the vertical direction. The lengths of the plurality of crushing rollers 310 decrease successively from bottom to top. The plurality of crushing rollers 310 are arranged in one-to-one correspondence with the discharge port 103 respectively. The crushing roller 310 with the shortest length is opposite to the discharge port 103 with the largest opening size. The plurality of crushing rollers 310 are connected with a driving mechanism for driving them to rotate, so that the crushing rollers 310 with different lengths rotate to crush materials of different sizes.

[0027] The lithium battery pole piece crushing device of the above structure, due to the multiple crushing rollers 310 of different lengths distributed from top to bottom, enables the crushing chamber 301 to form a crushing area with a decreasing number of crushing times from left to right. When in use, the pole piece after initial crushing is placed in the chamber 101 through the feed port 102, and then the pusher assembly 200 is started, so that the pusher assembly 200 drives the pole piece to move from right to left, so that pole pieces of different sizes pass through the discharge ports 103 of different opening sizes and fall into the crushing areas with different crushing times. Finally, pole pieces at different falling positions are crushed by a single or multiple crushing rollers 310, so that larger pole pieces can be crushed twice or even multiple times, while smaller pole pieces can be crushed once, so that the equipment can achieve the effect of crushing different degrees according to the size of the pole pieces after rough crushing, further improving the uniformity of the pole pieces after crushing, which is conducive to reducing the number of subsequent screening and reworking of pole pieces, and further conducive to improving the crushing effect of the pole pieces.

[0028] See also Figure 2 and Figure 3 It can be understood that a partition 140 is provided between the feed box 100 and the crushing box 300, and a feed port 102 is provided on the partition 140 to connect the volume chamber 101 and the crushing chamber 301. The partition 140 divides a plurality of discharge areas, and the feed port 102 can be set as a circular hole. The diameter of the circular hole in each discharge area corresponds to the size of the electrode pieces to be screened, so that different discharge areas screen the electrode pieces of different sizes. In addition, the number of crushing rollers 310 can be set to three, and the corresponding discharge ports 103 are set to three, so that the discharge port 103 with the largest opening size corresponds to three crushing rollers 310 downward, so that large pieces of electrode pieces are crushed multiple times, which is conducive to improving the crushing effect of large pieces of electrode pieces.

[0029] See also Figure 2 Furthermore, a plurality of cutting teeth 311 are arranged circumferentially on the outer peripheral wall of the crushing roller 310, and the cutting teeth 311 of two adjacent crushing rollers 310 are arranged alternately. The cutting teeth 311 of two adjacent crushing rollers 310 are staggered with each other, so that a crushing zone is formed between the two adjacent crushing rollers 310, and the pole pieces falling into the crushing zone are subjected to the shearing force and extrusion force of the cutting teeth 311, thereby further improving the efficiency and effect of crushing the pole pieces.

[0030] See also Figure 1 and Figure 2Further, the driving mechanism includes a plurality of motors 400, each crushing roller 310 is coaxially connected to a motor 400, the motor 400 is located outside the crushing box 300, and the plurality of motors 400 are electrically connected to a controller, so that the operation or stop of the plurality of crushing rollers 310 is controlled by the controller, which is conducive to improving the automation degree of the equipment and improving people's use experience. Among them, the controller can be connected to a start-stop button located outside the crushing box 300, or the controller can be electrically connected to an input panel, so that people can input control input through the start-stop button or the input panel.

[0031] See also Figure 1 and Figure 2 Furthermore, a mounting frame 320 is provided on the side wall of the crushing box 300, and a plurality of mounting plates 321 are arranged at intervals along the vertical direction on the mounting frame 320, and a plurality of motors 400 are respectively mounted on corresponding mounting plates 321. Specifically, the mounting frame 320 is fixed to the side wall of the crushing box 300 by welding, so that it is convenient for people to provide a position for fixing the motor 400 through the mounting plate 321. It can be understood that the two sides of the plurality of mounting plates 321 are connected by side plates, so that the mounting frame 320 forms a rectangular frame structure, thereby improving the structural strength of the mounting frame 320.

[0032] See also Figure 1 and Figure 2 Furthermore, the pushing assembly 200 includes a pushing plate 210 and a first cylinder 220. The telescopic rod of the first cylinder 220 is connected to the pushing plate 210. The first cylinder 220 is installed on the outside of the feed box 100, so that the telescopic rod is controlled by the first cylinder 220 to retract or extend, thereby driving the pushing plate 210 to extend to push the pole piece from right to left, which is also beneficial to the subsequent resetting of the pushing plate 210. The structure is simple and easy to install and maintain.

[0033] See also Figure 1 and Figure 2 Further, a feed hopper 110 is provided at the upper end of the feed box 100, and the feed hopper 110 is provided with a feed channel connected to the feed port 102. A second cylinder 120 is provided at the upper end of the feed box 100, and a sealing plate 130 is connected to the telescopic rod of the second cylinder 120. The sealing plate 130 is movably built into the feed channel so that the sealing plate 130 can close or open the feed channel. Among them, the second cylinder 120 drives the sealing plate 130 to move back and forth, which is conducive to the intermittent input of the electrode into the feed box 100, thereby reducing the phenomenon that the input amount of the electrode is greater than the output amount and accumulates in the cavity 101.

[0034] Furthermore, the first cylinder 220 is connected to the air supply source through the first pipeline, and the second cylinder 120 is connected to the air supply source through the second pipeline. The first pipeline and the second pipeline are both provided with electromagnetic valves for opening and closing the pipelines, and the two electromagnetic valves are electrically connected to the controller. Specifically, when in use, the controller controls the two electromagnetic valves to open alternately. For example, first open the solenoid valve of the second pipeline, so that the second cylinder 120 controls the movement of the sealing plate 130 to open the feed channel, so that a certain amount of electrode pieces can fall into the cavity 101, and then close the solenoid valve of the second pipeline, and open the solenoid valve of the first pipeline, so that the first cylinder 220 drives the push plate 210 to move, thereby pushing the electrode piece from right to left, and then pushing the electrode pieces of different sizes into the discharge ports 103 of different opening sizes. Finally, after the push plate 210 is reset, the solenoid valve of the second pipeline is reopened, and the above steps are repeated again, which is conducive to intermittently inputting the electrode pieces into the feed box 100, and is also conducive to the electrode pieces input into the cavity 101 being located between the left side wall of the feed box 100 and the push plate 210, which is convenient for the subsequent push plate 210 to push the material.

[0035] See also Figure 2 Furthermore, the feed hopper 110 is provided with an inclined surface having one end connected to the feed port 102 , so as to facilitate the electrode piece to slide into the feed port 102 under the action of gravity.

[0036] See also Figure 1 and Figure 2 Furthermore, a collecting hopper 330 is provided at the lower end of the crushing box 300. The collecting hopper 330 is a conical structure, and the small port of the collecting hopper 330 faces downward, so that people can collect the crushed materials. Specifically, a collecting box can be provided at the lower end of the collecting hopper 330, and the left and right inner walls of the crushing box 300 can be provided with inclined guide plates 331. The spacing between the two guide plates 331 gradually decreases from top to bottom, and the lower end of the guide plate 331 is connected to the large port of the collecting hopper 330, so as to reduce the residual of the crushed pole pieces at the corners of the box body, which is conducive to improving the collection effect of the crushed pole pieces.

[0037] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lithium battery pole piece crushing device, It is characterized in that include: A feed box (100), wherein the feed box (100) is provided with a cavity (101), the upper wall of the cavity (101) is provided with a feed port (102), the lower wall of the cavity (101) is provided with a plurality of discharge ports (103), the opening sizes of the plurality of discharge ports (103) decrease from left to right, the discharge ports (103) are arranged opposite to the discharge port (103) with the smallest opening size, and a pusher assembly (200) is arranged inside the cavity (101), and the pusher assembly (200) is used to push the material to move from right to left; A crushing box (300), wherein the crushing box (300) is provided with a crushing chamber (301) connected to the discharge port (103); a plurality of crushing rollers (310) are arranged on the left inner wall of the crushing box (300) in the vertical direction; the lengths of the plurality of crushing rollers (310) decrease from bottom to top; the plurality of crushing rollers (310) are arranged in one-to-one correspondence with the discharge port (103); the crushing roller (310) with the shortest length is opposite to the discharge port (103) with the largest opening size; and the plurality of crushing rollers (310) are connected to a driving mechanism for driving the plurality of crushing rollers (310) to rotate, so that the crushing rollers (310) with different lengths rotate to crush materials of different sizes.

2. A lithium battery pole piece crushing device according to claim 1, It is characterized in that A plurality of cutting teeth (311) are circumferentially arranged on the outer peripheral wall of the crushing roller (310), and the cutting teeth (311) of two adjacent crushing rollers (310) are arranged in a staggered manner.

3. A lithium battery pole piece crushing device according to claim 2, It is characterized in that The driving mechanism comprises a plurality of motors (400), each of the crushing rollers (310) is coaxially connected to the motor (400), the motor (400) is located outside the crushing box (300), and the plurality of motors (400) are electrically connected to a controller.

4. A lithium battery pole piece crushing device according to claim 3, It is characterized in that A mounting frame (320) is provided on the side wall of the crushing box (300), and a plurality of mounting plates (321) are arranged at intervals in the vertical direction on the mounting frame (320), and the plurality of motors (400) are respectively mounted on corresponding mounting plates (321).

5. A lithium battery pole piece crushing device according to claim 1, It is characterized in that The pusher assembly (200) comprises a pusher plate (210) and a first cylinder (220), wherein a telescopic rod of the first cylinder (220) is connected to the pusher plate (210), and the first cylinder (220) is installed outside the feed box (100).

6. A lithium battery pole piece crushing device according to claim 5, It is characterized in that A feed hopper (110) is provided at the upper end of the feed box (100), and the feed hopper (110) is provided with a feed channel connected to the feed port (102). A second cylinder (120) is provided at the upper end of the feed box (100), and the telescopic rod of the second cylinder (120) is connected to a sealing plate (130), and the sealing plate (130) is movably built into the feed channel so that the sealing plate (130) can close or open the feed channel.

7. A lithium battery pole piece crushing device according to claim 6, It is characterized in that The first cylinder (220) is connected to an air supply source via a first pipeline, and the second cylinder (120) is connected to the air supply source via a second pipeline. Both the first pipeline and the second pipeline are provided with solenoid valves for opening and closing the pipelines, and the two solenoid valves are electrically connected to a controller.

8. A lithium battery pole piece crushing device according to claim 6, It is characterized in that The feed hopper (110) is provided with an inclined surface having one end connected to the feed port (102).

9. A lithium battery pole piece crushing device according to claim 1, It is characterized in that A material receiving hopper (330) is provided at the lower end of the crushing box (300). The material receiving hopper (330) is a conical structure, and a small port of the material receiving hopper (330) faces downward.

Images