Lithium ion battery negative electrode material compacting device

Abstract

The utility model discloses a lithium ion battery negative electrode material compacting device which comprises a box body, a feeding hopper is arranged at the upper end of the box body, a screening mechanism is located in the box body, a storage box with a telescopic side wall is movably arranged below the screening mechanism, a fixing assembly with an adjustable interval is installed at the inner bottom of the box body, and the box body is located in the storage box. According to the utility model, the storage boxes with different sizes can be limited through the arrangement of the fixed assemblies with adjustable spacing, and the compaction assembly is matched with the storage boxes with telescopic side walls, so that the compaction operation can be carried out according to the cathode materials in the storage boxes with different sizes; the side wall of the material storage box is arranged in a telescopic manner, so that the negative electrode material stored in the material storage box has a compression space, the compaction tightness of the negative electrode material is improved, and the preparation quality of the negative electrode material of the lithium battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery negative electrode material production equipment, in particular to a lithium ion battery negative electrode material compacting device. Background Art

[0002] In the production of negative electrode materials for lithium-ion batteries, the negative electrode materials are first coated on a conductive substrate. In order to increase the density and conductivity of the material, a compacting device is used to compact the negative electrode material so that the material is tightly combined with the conductive substrate, thereby increasing the energy density of the lithium-ion battery.

[0003] After searching, the Chinese patent document application number is 202210883941.9, which discloses a lithium-ion battery negative electrode material compacting device, including a base, a working box body fixedly connected to the top of the base, a feed port opened at the top of the working box body, a discharge port opened on the side wall of the working box body, and a raw material conveying mechanism, a raw material compacting mechanism and a raw material bearing mechanism are sequentially arranged from top to bottom inside the working box body, a raw material placement groove is arranged on the raw material bearing mechanism, the raw material conveying mechanism and the raw material compacting mechanism are both arranged corresponding to the raw material placement groove, the raw material conveying mechanism is connected to the feed port, and the raw material bearing mechanism is arranged corresponding to the discharge port. The invention realizes the uniform conveying of raw materials, ensures the quality of the negative electrode material of the lithium-ion battery after compaction, improves production efficiency, and ensures the health of the operator at the same time.

[0004] However, the above compacting device still has the following defects:

[0005] Since the size of the raw material placement trough is fixed, the size of the compacted negative electrode material is also fixed, which makes the compacting device applicable to a single variety and is not convenient for compacting negative electrode materials of different sizes according to actual production needs. Therefore, we need to propose a lithium-ion battery negative electrode material compacting device to solve the above-mentioned problems and improve the versatility of the device. Utility Model Content

[0006] The purpose of the utility model is to provide a lithium-ion battery negative electrode material compacting device, which can limit storage boxes of different sizes by setting a fixed component with adjustable spacing, and through the cooperation of the compacting component and the storage box with retractable side walls, compaction operations can be performed according to the negative electrode material inside the storage boxes of different sizes, thereby improving the versatility of the device and solving the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium-ion battery negative electrode material compacting device, comprising a box body, a feed hopper is arranged at the upper end of the box body, a screening mechanism is installed below the feed hopper, the screening mechanism is located inside the box body, a storage box with retractable side walls is movably arranged below the screening mechanism, a fixing component with adjustable spacing is installed at the inner bottom of the box body, the storage box is detachably installed on the fixing component, a pushing mechanism for pushing the storage box to move is arranged at one end of the fixing component, a discharge port for pushing the storage box out is arranged on the side of the box body opposite to the pushing mechanism, and a compacting component that can be raised and lowered and can roll horizontally is installed at the inner top of the box body.

[0008] Preferably, the storage box includes a bottom plate and a mouth-shaped frame, a plurality of springs are equidistantly installed around the edges of the bottom plate, the upper ends of the plurality of springs are fixed to the lower end of the mouth-shaped frame, a boss is integrally formed on the upper surface of the bottom plate, the boss is located inside the mouth-shaped frame, and the side wall of the boss is in contact with the inner wall of the mouth-shaped frame.

[0009] Preferably, the compaction assembly includes a fixed frame and a compaction roller, two first electric push rods are fixed to the upper surface of the fixed frame, the upper ends of the first electric push rods are fixed to the inner top of the box body, and both ends of the compaction roller are rotatably connected to an L-shaped rod, and one end of the L-shaped rod is slidably connected to both sides of the fixed frame through a moving mechanism.

[0010] Preferably, the moving mechanism includes a first screw and a first motor, sliding grooves are opened on opposite sides of the fixed frame, the first screw is rotatably connected in the sliding groove, and the first motor is installed at one end of the first screw, and one end of the L-shaped rod is threadedly connected to the first screw.

[0011] Preferably, the fixing assembly includes a fixing plate and two limiting plates, three sliding blocks are equidistantly fixed at the lower end of the limiting plate, a sliding groove for sliding the sliding blocks is provided on the fixing plate, the middle sliding blocks between the two limiting plates are driven by a distance adjusting mechanism, and the distance adjusting mechanism is installed inside the fixing plate.

[0012] Preferably, the distance adjustment mechanism includes a second bidirectional screw, a mounting cavity for rotationally connecting the second screw is opened on the fixed plate, a second motor is installed on one side of the mounting cavity passing through one end of the second screw, and a sliding block between the two limit plates is threadedly connected to both ends of the second screw.

[0013] Preferably, the pushing mechanism includes a second electric push rod and a push plate, the second electric push rod is installed on the side wall of the box body, the push plate is fixed on the piston rod end of the second electric push rod, and the push plate is aligned with the storage box.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model can limit the positions of storage boxes of different sizes by setting a fixed component with adjustable spacing, and can perform compaction operations according to the negative electrode materials inside storage boxes of different sizes by cooperating with the compaction component and the storage box with retractable side walls, thereby improving the versatility of the device.

[0016] 2. The utility model provides a compression space for the negative electrode material stored inside the storage box by means of the retractable side wall of the storage box, thereby improving the compactness of the negative electrode material and thus improving the quality of the preparation of the negative electrode material for lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the material storage box of the utility model;

[0019] Figure 3 This is a schematic diagram of the explosion structure of the fixed component of the utility model;

[0020] Figure 4 This is a schematic diagram of the compaction component structure of the utility model.

[0021] In the figure: 1. box body; 2. feed hopper; 3. screening mechanism; 4. compacting assembly; 401. fixed frame; 402. first electric push rod; 403. first screw rod; 404. first motor; 405. sliding groove; 406. compacting roller; 407. rotating shaft; 408. L-shaped rod; 5. fixed assembly; 501. fixed plate; 502. limit plate; 503. slider; 504. second screw rod; 505. second motor; 506. sliding groove; 6. pushing mechanism; 601. second electric push rod; 602. pushing plate; 7. storage box; 701. mouth-shaped frame; 702. bottom plate; 703. boss; 704. spring; 8. discharge port. 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] See also Figure 1-4The utility model provides a technical solution: a negative electrode material compacting device for a lithium ion battery, comprising a box body 1, a feed hopper 2 is arranged at the upper end of the box body 1, and a screening mechanism 3 is installed below the feed hopper 2. The screening mechanism 3 is the same as the screening mechanism disclosed in the existing patent document (application number 202210883941.9, a negative electrode material compacting device for a lithium ion battery disclosed), which will not be described in detail herein. The screening mechanism 3 is located inside the box body 1, and a storage box 7 with retractable side walls is movably arranged below the screening mechanism 3. A fixing component 5 with adjustable spacing is installed at the inner bottom of the box body 1, and the storage box 7 is detachably installed on the fixing component 5. A pushing mechanism 6 for pushing the storage box 7 to move is arranged at one end of the fixing component 5, and a discharge port 8 for pushing the storage box 7 out is arranged on the side opposite to the pushing mechanism 6 of the box body 1, and a compacting component 4 which can be lifted and lowered and can roll horizontally is installed on the inner top of the box body 1.

[0024] When in use, the storage box 7 is first restricted inside the box body 1 by the fixing component 5, and then the negative electrode material is added into the box body 1 from the feed hopper 2, and then screened by the screening mechanism 3 and dropped into the storage box 7, and then the compacting component 4 is lowered to compact the storage box 7. After compaction, the storage box 7 is pushed out of the box body 1 by the pushing mechanism 6, without manual material removal, which improves the efficiency of compacting the negative electrode material to a certain extent.

[0025] The material storage box 7 includes a bottom plate 702 and a mouth-shaped frame 701. A plurality of springs 704 are equidistantly installed around the edges of the bottom plate 702. The upper ends of the plurality of springs 704 are fixed to the lower end of the mouth-shaped frame 701. A boss 703 is integrally formed on the upper surface of the bottom plate 702. The boss 703 is located inside the mouth-shaped frame 701, and the side wall of the boss 703 is in contact with the inner wall of the mouth-shaped frame 701. When the spring 704 is not compressed, the lower end of the mouth-shaped frame 701 and the upper edge of the boss 703 are compacted. The resilience of the spring 704 is used to move the mouth-shaped frame 701 downward, so that the mouth-shaped frame 701 has a certain expansion and contraction space, providing a certain compaction height for the negative electrode material in the material storage box 7, improving the compaction tightness of the negative electrode material, and thus improving the quality of the preparation of negative electrode materials for lithium batteries.

[0026] The compacting assembly 4 includes a fixed frame 401 and a compacting roller 406. Two first electric push rods 402 are fixed to the upper surface of the fixed frame 401. The upper ends of the first electric push rods 402 are fixed to the inner top of the box body 1. Both ends of the compacting roller 406 are rotatably connected with L-shaped rods 408. One end of the L-shaped rod 408 is slidably connected to both sides of the fixed frame 401 through a moving mechanism. Both ends of the compacting roller 406 are fixed with rotating shafts 407. The rotating shaft 407 is rotatably connected to the other end of the L-shaped rod 408 through a bearing. The fixed frame 401 is driven downward by the first electric push rod 402, so that the fixed frame 401 drives the compacting roller 406 to rise or fall, so that the compacting roller 406 can compact the storage box 7.

[0027] The moving mechanism includes a first screw 403 and a first motor 404. Sliding grooves 405 are provided on opposite sides of the fixed frame 401. The first screw 403 is rotatably connected in the sliding groove 405, and the first motor 404 is installed at one end of the first screw 403. One end of the L-shaped rod 408 is threadedly connected to the first screw 403. The first motor 404 drives the first screw 403 to rotate, so that the first screw 403 drives the L-shaped rod 408 to move, and the compaction roller 406 is driven by the movement of the L-shaped rod 408 to roll horizontally on the surface of the storage box 7.

[0028] The fixing assembly 5 includes a fixing plate 501 and two limiting plates 502. Three sliders 503 are fixed at equal distances at the lower end of the limiting plate 502. A sliding groove 506 for the sliders 503 to slide is provided on the fixing plate 501. The middle sliders 503 of the two limiting plates 502 are driven by a distance adjusting mechanism. The distance adjusting mechanism is installed inside the fixing plate 501. The distance between the two limiting plates 502 is adjusted by the distance adjusting mechanism, so that the two limiting plates 502 can limit storage boxes 7 of different sizes according to actual usage requirements.

[0029] The distance adjustment mechanism includes a bidirectional second screw 504, and an installation cavity for the second screw 504 to be rotatably connected is opened on the fixed plate 501. One end of the second screw 504 passes through one side of the installation cavity and is installed with a second motor 505. The slider 503 between the two limit plates 502 is threadedly connected to the two ends of the second screw 504. The second motor 505 drives the second screw 504 to rotate, so that the second screw 504 drives the two threaded sliders 503 to move relative to each other, and the slider 503 drives the two limit plates 502 to move relative to each other, so as to adjust the distance between the two limit plates 502, so that the two limit plates 502 can limit the position of storage boxes 7 of different sizes.

[0030] The pushing mechanism 6 includes a second electric push rod 601 and a push plate 602. The second electric push rod 601 is installed on the side wall of the box body 1. The push plate 602 is fixed on the piston rod end of the second electric push rod 601. The push plate 602 is aligned with the storage box 7. The push plate 602 is driven by the second electric push rod 601 to move, so that the push plate 602 pushes the storage box 7 to be discharged from the discharge port 8, thereby avoiding manual material collection by personnel.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A lithium-ion battery negative electrode material compacting device, comprising a box (1), characterized in that: A feed hopper (2) is arranged at the upper end of the box body (1), a screening mechanism (3) is installed below the feed hopper (2), the screening mechanism (3) is located inside the box body (1), a storage box (7) with retractable side walls is movably arranged below the screening mechanism (3), a fixing component (5) with adjustable spacing is installed at the inner bottom of the box body (1), the storage box (7) is detachably installed on the fixing component (5), one end of the fixing component (5) is provided with a pushing mechanism (6) for pushing the storage box (7) to move, a discharge port (8) for pushing the storage box (7) out is arranged on the side of the box body (1) opposite to the pushing mechanism (6), and a compacting component (4) that can be raised and lowered and can roll horizontally is installed at the inner top of the box body (1).

2. A lithium-ion battery negative electrode material compacting device according to claim 1, characterized in that: The material storage box (7) comprises a bottom plate (702) and a mouth-shaped frame (701); a plurality of springs (704) are equidistantly installed around the edges of the bottom plate (702); the upper ends of the plurality of springs (704) are fixed to the lower end of the mouth-shaped frame (701); a boss (703) is integrally formed on the upper surface of the bottom plate (702); the boss (703) is located inside the mouth-shaped frame (701), and the side wall of the boss (703) is in contact with the inner wall of the mouth-shaped frame (701).

3. A lithium-ion battery negative electrode material compacting device according to claim 2, characterized in that: The compacting assembly (4) comprises a fixed frame (401) and a compacting roller (406); two first electric push rods (402) are fixed on the upper surface of the fixed frame (401); the upper ends of the first electric push rods (402) are fixed to the inner top of the box body (1); the two ends of the compacting roller (406) are rotatably connected to an L-shaped rod (408); one end of the L-shaped rod (408) is slidably connected to the two sides of the fixed frame (401) through a moving mechanism.

4. A lithium-ion battery negative electrode material compacting device according to claim 3, characterized in that: The moving mechanism comprises a first screw rod (403) and a first motor (404); sliding grooves (405) are provided on opposite sides of the fixed frame (401); the first screw rod (403) is rotatably connected in the sliding groove (405); the first motor (404) is installed at one end of the first screw rod (403); and one end of the L-shaped rod (408) is threadedly connected to the first screw rod (403).

5. A lithium-ion battery negative electrode material compacting device according to claim 4, characterized in that: The fixing assembly (5) comprises a fixing plate (501) and two limiting plates (502); three sliding blocks (503) are fixed at equal intervals on the lower end of the limiting plate (502); a sliding groove (506) for the sliding blocks (503) to slide is provided on the fixing plate (501); the middle sliding blocks (503) of the two limiting plates (502) are driven by a distance adjustment mechanism; and the distance adjustment mechanism is installed inside the fixing plate (501).

6. A lithium-ion battery negative electrode material compacting device according to claim 5, characterized in that: The distance adjustment mechanism comprises a bidirectional second screw (504); a mounting cavity for rotationally connecting the second screw (504) is provided on the fixing plate (501); a second motor (505) is installed on one side of the mounting cavity passing through one end of the second screw (504); and a slider (503) between the two limit plates (502) is threadedly connected to both ends of the second screw (504).

7. A lithium-ion battery negative electrode material compacting device according to claim 6, characterized in that: The pushing mechanism (6) comprises a second electric push rod (601) and a push plate (602), wherein the second electric push rod (601) is mounted on the side wall of the box body (1), and the push plate (602) is fixed to the piston rod end of the second electric push rod (601), and the push plate (602) is aligned with the material storage box (7).

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