Lithium iron phosphate precursor compaction device

Abstract

The utility model discloses a lithium iron phosphate precursor compaction device, and relates to the technical field of lithium iron phosphate precursor processing. The device comprises a bottom plate, a rotating motor is fixed to the upper end face of the bottom plate, a cross plate is fixed to the rotating shaft end of the rotating motor, placing rings are fixed to the four ends of the cross plate, a U-shaped plate is connected to the upper end face, located on the left side of the rotating motor, of the bottom plate through bolts, and a jolt ramming plate is arranged on the inner side, located below the placing rings, of the U-shaped plate. A linkage motor is arranged above the bottom plate located on the right side of the rack, a fan-shaped tooth block meshed with the rack is fixed to the rotating shaft end of the linkage motor, and buffer plates are arranged on the inner sides of the U-shaped plates located above the placing rings. The rack is intermittently driven by the fan-shaped tooth block to move up and down, so that the compaction plate can push the mold up and down back and forth, a lithium iron phosphate precursor in the mold is compacted, the compaction work efficiency is improved, and the mold is limited by the buffer plate, so that the position of the mold in the compaction process is stable.

Description

Technical Field

[0001] This utility model belongs to the field of lithium iron phosphate precursor processing technology, and in particular relates to a lithium iron phosphate precursor vibration compaction device. Background Technology

[0002] Lithium iron phosphate (LiFePO4) is one of the mainstream cathode materials for lithium-ion batteries. Due to its high safety, long cycle life, and low cost, it is widely used in power batteries (such as electric vehicles), energy storage systems (such as grid energy storage), and consumer electronics. The physical and chemical properties of its precursors (such as iron phosphate, iron-lithium source complexes) directly determine the performance of the final cathode material, such as electrochemical activity, energy density, and cycle stability. In battery material preparation, tap density is a key parameter for measuring the compactness of powder particle packing. Therefore, a tapping device is required, which is a device that rearranges powder particles and reduces porosity through mechanical vibration or impact.

[0003] However, existing vibration compaction equipment cannot effectively and quickly mechanically vibrate the mold when compacting lithium iron phosphate precursors in the mold, thus failing to guarantee the efficiency of the compaction process. Furthermore, when using mechanical vibration to compact the mold, the lack of a limiting and buffering function makes the mold prone to detachment, resulting in the spillage of lithium iron phosphate precursors. Therefore, we provide a lithium iron phosphate precursor vibration compaction device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a lithium iron phosphate precursor compaction device. The device uses a fan-shaped toothed block to intermittently drive the rack to move up and down, thereby allowing the compaction plate to push the mold back and forth, ensuring that the lithium iron phosphate precursor inside the mold is compacted and improving the efficiency of the compaction process. At the same time, the buffer plate limits the position of the mold, ensuring that the mold is stable in the compaction process.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a vibration compaction device for lithium iron phosphate precursors, comprising a base plate; a rotary motor is fixed to the upper surface of the base plate, a cross plate is fixed to the shaft end of the rotary motor, and placement rings are fixed to the four ends of the cross plate; a U-shaped plate is bolted to the upper surface of the base plate to the left of the rotary motor; a compaction plate is arranged inside the U-shaped plate below the placement rings; a movable rod is fixed to the lower surface of the compaction plate, and a rack is fixed to the lower surface of the movable rod; a linkage motor is arranged above the base plate to the right of the rack; a fan-shaped toothed block that meshes with the rack is fixed to the shaft end of the linkage motor; a buffer plate is arranged inside the U-shaped plate above the placement rings; and a mold is arranged inside each set of placement rings.

[0007] The present invention is further configured such that an ejector cylinder is fixed on the upper surface of the base plate located to the right of the rotary motor, and the ejector cylinder is aligned vertically with the rotation path of the placement ring.

[0008] The present invention is further configured such that a support frame is fixed at the position corresponding to the linkage motor on the upper end of the base plate, and the rotary motor is fixed on the support frame.

[0009] The present invention is further configured such that a limiting cylinder is fixed to the inner wall of the U-shaped plate located below the vibrating plate, the movable rod passes through the inside of the limiting cylinder, and a pad that connects with the upper surface of the base plate is fixed to the lower end face of the movable rod.

[0010] The present invention is further configured such that a plurality of springs are fixed on the upper end face of the vibrating plate and are evenly distributed along its periphery, and the upper end face of the springs abuts against the upper end of the U-shaped plate.

[0011] The present invention is further configured such that a positioning hole is provided at the upper end of the U-shaped plate corresponding to the position of each spring, and a positioning rod passing through the spring is fixed at the position of the positioning hole on the upper end of the vibrating plate, and the upper end of each positioning rod is inserted into the corresponding positioning hole.

[0012] The present invention is further configured such that screw holes are provided on the upper end face of the positioning rod, and a circular plate is provided on the upper end face of the U-shaped plate at the position corresponding to the positioning rod, and the screw fixed at the lower end of the circular plate is screwed into the screw hole.

[0013] This utility model has the following beneficial effects:

[0014] The rotary motor is controlled to operate, which drives the cross plate to rotate. The cross plate then drives the mold to rotate to the position between the vibrating plate and the buffer plate via the placement ring. At this time, the linkage motor is controlled to operate, which drives the fan-shaped toothed block to intermittently control the rack to move up and down. The rack then drives the vibrating plate to vibrate the mold up and down via the movable rod, thereby vibrating the lithium iron phosphate precursor in the mold and improving the efficiency of the vibration work.

[0015] When the mold moves upward, it will come into contact with the buffer plate. The buffer plate pushes the mold, preventing it from moving up and down excessively, ensuring that the mold can be stably placed in the placement ring and that the mold is in a stable position during the compaction process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a structural assembly diagram of the linkage motor, U-shaped plate, buffer plate and vibration plate in this utility model.

[0019] Figure 3 This is a structural assembly diagram of the linkage motor and the vibration plate in this utility model.

[0020] Figure 4 This is a structural diagram of the buffer plate in this utility model.

[0021] Figure 5 This is a structural diagram of the U-shaped plate in this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1-Base plate, 2-Rotary motor, 201-Cross plate, 202-Placing ring, 3-Mold, 4-Ejection cylinder, 5-Linkage motor, 501-Upright frame, 502-Sector-shaped toothed block, 6-U-shaped plate, 601-Limiting cylinder, 602-Positioning hole, 7-Buffer plate, 701-Positioning rod, 702-Screw hole, 703-Spring, 704-Circular plate, 8-Vibration plate, 801-Moving rod, 802-Rack, 803-Pad plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0025] Please see Figures 1 to 5 This utility model is a lithium iron phosphate precursor compaction device. The fan-shaped toothed block 502 intermittently drives the rack 802 to move up and down, so that the compaction plate 8 can push the mold 3 back and forth, ensuring that the lithium iron phosphate precursor inside the mold 3 is compacted and improving the efficiency of the compaction work. At the same time, the buffer plate 7 limits the mold 3 to ensure that the mold 3 is in a stable position during the compaction process.

[0026] Specifically, base plate 1: A rotary motor 2 is fixed to the upper surface of base plate 1. A cross plate 201 is fixed to the shaft end of the rotary motor 2. Placement rings 202 are fixed to all four ends of the cross plate 201. A U-shaped plate 6 is bolted to the upper surface of base plate 1 to the left of the rotary motor 2. A vibrating plate 8 is set inside the U-shaped plate 6 below the placement rings 202. A movable rod 801 is fixed to the lower surface of the vibrating plate 8. A rack 802 is fixed to the lower surface of the movable rod 801. A linkage motor 5 is set above base plate 1 to the right of the rack 802. A sector-shaped toothed block 502 that meshes with the rack 802 is fixed to the shaft end of the linkage motor 5. A buffer plate 7 is provided on the inner side of the U-shaped plate 6 above the placement ring 202. An ejector cylinder 4 is fixed on the upper end of the base plate 1 located to the right of the rotary motor 2, and the ejector cylinder 4 is aligned vertically with the rotation path of the placement ring 202. A stand 501 is fixed on the upper end of the base plate 1 at the position corresponding to the linkage motor 5. The rotary motor 2 is fixed on the stand 501. A limit cylinder 601 is fixed on the inner wall of the U-shaped plate 6 located below the vibration plate 8. The movable rod 801 passes through the inside of the limit cylinder 601. A pad 803 connected to the upper end of the base plate 1 is fixed on the lower end of the movable rod 801. A mold 3 is provided on the inner side of each set of placement rings 202.

[0027] The operation process of this embodiment is as follows: With the above structure set up, the lithium iron phosphate precursor is poured into the mold 3 and the mold 3 is placed on the placement ring 202, so that the mold 3 is in the inner position of the placement ring 202. The rotary motor 2 is controlled to work, thereby the rotary motor 2 drives the cross plate 201 to rotate. Then the cross plate 201 drives the mold 3 to rotate to the position between the vibration plate 8 and the buffer plate 7 through the placement ring 202. At this time, the linkage motor 5 is controlled to work, thereby the linkage motor 5 drives the fan-shaped tooth block 502 to intermittently control the rack 802 to move up and down. Thus, the rack 802 drives the vibration plate 8 to vibrate the mold 3 up and down through the movable rod 801, so as to vibrate the lithium iron phosphate precursor in the mold 3. When the mold 3 moves upward, it will contact the buffer plate 7. After the buffer plate 7 pushes the mold 3, the mold 3 will not move up and down excessively, ensuring that the mold 3 can be stably placed in the placement ring 202, and ensuring that the mold 3 is in a stable position during the vibration process.

[0028] Meanwhile, after the vibration of the mold 3 is completed, the rotary motor 2 is controlled to work again, thereby driving the cross plate 201 to rotate one stroke, causing another set of placement rings 202 to rotate between the plate to be vibrated 8 and the buffer plate 7. It also drives a set of placement rings 202 to rotate to the position above the ejector cylinder 4. Through the operation of the ejector cylinder 4, the ejector cylinder 4 pushes the mold 3 upward, making it easy to remove the mold 3. Example 2

[0029] Please see Figure 2 , Figure 4 and Figure 5 Based on Example 1, the assembly relationship between the circular plate 704 and the positioning rod 701 ensures that the buffer plate 7 is stably positioned inside the U-shaped plate 6.

[0030] Specifically, multiple springs 703 are fixed on the upper end face of the vibrating plate 8 and are evenly distributed along its periphery. The upper end face of the springs 703 abuts against the upper end of the U-shaped plate 6. A positioning hole 602 is provided at the upper end of the U-shaped plate 6 corresponding to the position of each spring 703. A positioning rod 701 passing through the spring 703 is fixed at the position of the positioning hole 602 on the upper end face of the vibrating plate 8. The upper end face of each positioning rod 701 is inserted into the corresponding positioning hole 602. A screw hole 702 is provided at the upper end face of the positioning rod 701. A circular plate 704 is provided at the position of the positioning rod 701 on the upper end face of the U-shaped plate 6. The screw fixed at the lower end of the circular plate 704 is screwed into the screw hole 702.

[0031] The operation process of this embodiment is as follows: When the mold 3 moves upward, the mold 3 will push the buffer plate 7, thereby compressing the spring 703. Through the compression of the spring 703, the collision intensity between the buffer plate 7 and the mold 3 can be reduced. At the same time, when the buffer plate 7 moves up and down with the mold 3, the buffer plate 7 will drive the positioning rod 701 to slide in the positioning hole 602. Thus, the positioning hole 602 limits the positioning rod 701 and limits the buffer plate 7. When disassembling the buffer plate 7, the circular plate 704 is rotated to disassemble the circular plate 704 from the positioning rod 701. Then the positioning rod 701 is taken out in the positioning hole 602, and the buffer plate 7 can be disassembled and replaced. At the same time, the circular plate 704 is located at the upper end face of the U-shaped plate 6. Therefore, when the circular plate 704 is assembled with the positioning rod 701, it will limit the buffer plate 7, ensuring that the buffer plate 7 is stably located in the inner position of the U-shaped plate 6.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lithium iron phosphate precursor compaction device, comprising a base plate (1); characterized in that: A rotary motor (2) is fixed to the upper surface of the base plate (1). A cross plate (201) is fixed to the shaft end of the rotary motor (2). Placement rings (202) are fixed to all four ends of the cross plate (201). A U-shaped plate (6) is bolted to the upper surface of the base plate (1) to the left of the rotary motor (2). A vibrating plate (8) is provided on the inner side of the U-shaped plate (6) below the placement rings (202). A vibrating plate (8) is fixed to the lower surface of the vibrating plate (8). The movable rod (801) has a rack (802) fixed on its lower end face. A linkage motor (5) is set above the base plate (1) to the right of the rack (802). A fan-shaped tooth block (502) that meshes with the rack (802) is fixed on the shaft end of the linkage motor (5). A buffer plate (7) is set on the inner side of the U-shaped plate (6) above the placement ring (202). A mold (3) is set on the inner side of each set of placement rings (202).

2. The lithium iron phosphate precursor compaction device according to claim 1, characterized in that, An ejector cylinder (4) is fixed on the upper surface of the base plate (1) located to the right of the rotary motor (2), and the ejector cylinder (4) is aligned with the vertical position of the rotation path of the placement ring (202).

3. The lithium iron phosphate precursor compaction device according to claim 1, characterized in that, A support frame (501) is fixed at the position corresponding to the linkage motor (5) on the upper end of the base plate (1), and the rotary motor (2) is fixed on the support frame (501).

4. The lithium iron phosphate precursor compaction device according to claim 1, characterized in that, A limiting cylinder (601) is fixed to the inner wall of the U-shaped plate (6) located below the vibrating plate (8). The movable rod (801) passes through the inside of the limiting cylinder (601). A pad (803) that is connected to the upper end of the bottom plate (1) is fixed to the lower end of the movable rod (801).

5. The lithium iron phosphate precursor compaction device according to claim 1, characterized in that, The upper end face of the vibrating plate (8) is fixed with a plurality of springs (703) evenly distributed along its periphery, and the upper end face of the springs (703) abuts against the upper end of the U-shaped plate (6).

6. The lithium iron phosphate precursor compaction device according to claim 5, characterized in that, The upper end of the U-shaped plate (6) is provided with a positioning hole (602) corresponding to the position of each spring (703). The upper end of the vibrating plate (8) is fixed with a positioning rod (701) passing through the spring (703) at the position corresponding to the positioning hole (602), and the upper end of each positioning rod (701) is inserted into the corresponding positioning hole (602).

7. The lithium iron phosphate precursor compaction device according to claim 6, characterized in that, The upper end face of the positioning rod (701) is provided with screw holes (702), and the upper end face of the U-shaped plate (6) is provided with a circular plate (704) at the position corresponding to the positioning rod (701). The screw fixed at the lower end of the circular plate (704) is screwed into the screw hole (702).

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