A semi-solid battery slurry compression molding and automatic filling device

Abstract

The application relates to the technical field of battery processing, in particular to a semi-solid battery slurry pressing forming and automatic filling device, which can realize continuous battery slurry feeding into a box, improve efficiency, and guarantee slurry quality, and comprises a screw discharging machine, a discharging port of the screw discharging machine is connected with an inlet of a discharging die, a battery box and a cutting mechanism are arranged at an outlet of the discharging die, a battery box conveying device is arranged at the outlet of the discharging die, the battery box conveying device comprises a longitudinal conveying frame, a battery box supporting plate is arranged on the longitudinal conveying frame, a jacking and transplanting mechanism is arranged on the inner side of the longitudinal conveying frame, the jacking and transplanting mechanism comprises a jacking seat connected with a jacking oil cylinder, and a transverse conveying belt connected with a belt wheel is arranged on the jacking seat.

Description

Technical Field

[0001] This invention relates to the field of battery processing technology, specifically to a semi-solid battery slurry pressing and forming and automatic filling device. Background Technology

[0002] Lithium-ion batteries are currently the most common type of battery. In their processing, raw material powder and liquid are mixed and processed to obtain a semi-solid slurry. This slurry is then packed into a battery box. The current process involves extruding the semi-solid slurry into shape after it is discharged, and then manually cutting it into pieces before placing it into the battery box. This manual batching method results in low production efficiency. Furthermore, the cutting process can easily cause deformation, requiring re-extrusion. Excessive extrusion can lead to slurry performance failure and affect the quality of the slurry. Summary of the Invention

[0003] To address the problems of low efficiency and excessive extrusion affecting slurry quality caused by the inability to continuously feed battery slurry into the cassette, this invention provides a semi-solid battery slurry pressing and automatic filling device, which enables continuous feeding of battery slurry into the cassette, improving efficiency and ensuring slurry quality.

[0004] The technical solution is as follows: A semi-solid battery slurry pressing and molding and automatic filling device, characterized in that it includes a screw feeder, the discharge port of which is connected to the inlet of a discharge mold, the outlet of which is provided with a battery box and a cutting mechanism, and the outlet of which is provided with a battery box conveying device, the battery box conveying device including a longitudinal conveying frame, a battery box support plate placed on the longitudinal conveying frame, a lifting and transferring mechanism provided inside the longitudinal conveying frame, the lifting and transferring mechanism including a lifting seat connected to a lifting cylinder, and a transverse conveyor belt connected to a pulley provided on the lifting seat.

[0005] A further feature is that the screw feeder includes a feeder housing and a screw shaft installed inside the feeder housing. One end of the feeder housing is provided with a gearbox and a motor, and the other end is a discharge port. One end of the screw shaft is connected to the gearbox, and the other end is suspended.

[0006] The screw feeder has a twin-screw structure, with the two screw shafts rotating in opposite directions and the helical blades on the two screw shafts being tangential and staggered.

[0007] The cutting mechanism includes a pin fixed to the discharge mold, a sleeve movably fitted on the pin, a bracket fixed on the sleeve, a cutting metal wire fixed on the bracket, and the cutting metal wire disposed between the battery box and the discharge mold.

[0008] The cutting mechanism includes a base connected to the discharge mold, a bracket fixed to the top of the base, a cutting cylinder mounted on the bracket, a cutting valve plate fixed to the piston of the cutting cylinder, a through hole that matches the longitudinal section of the inner cavity of the base, and a cutting groove that runs vertically through the base and corresponds to the size of the cutting valve plate.

[0009] The battery box support plate has notches in the middle of the front and rear sides, and the lifting seat is equipped with a side clamping lever cylinder corresponding to the position of the notch.

[0010] The screw discharge machine is located on one side of the lifting and transplanting mechanism, and a first transverse electric push rod is located on the other side of the lifting and transplanting mechanism. The end of the first transverse electric push rod is equipped with a first top plate that matches the longitudinal section of the inner cavity of the battery box.

[0011] A second transverse electric push rod is provided next to the first transverse electric push rod. The end of the second transverse electric push rod is equipped with a second top plate that matches the longitudinal section of the inner cavity of the battery box. A waste bin is provided on the other side of the longitudinal conveyor frame.

[0012] With this invention, the battery box is placed against the outlet of the discharge mold, and the screw feeder delivers the semi-solid battery slurry. After passing through the discharge mold, it is extruded into the required shape and filled into the battery box. The cutting mechanism then cuts the slurry into the battery box, completing the slurry loading operation for one battery box. The battery box is then removed and replaced with another empty battery box, and the above operation is repeated. This achieves continuous slurry loading, and the slurry can be discharged in a single extrusion, avoiding the problem of slurry performance failure caused by over-extrusion. This improves efficiency while ensuring slurry quality. The battery box is placed on the battery box support plate and moves longitudinally by a longitudinal conveyor frame. The lifting and transfer mechanism lifts and moves laterally, enabling automatic loading, docking with the discharge mold, and unloading of the battery box. This achieves continuous automated production and greatly improves processing efficiency. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of Embodiment 1 of the present invention;

[0014] Figure 2 This is a bottom view schematic diagram of Embodiment 1 of the present invention;

[0015] Figure 3 This is a cross-sectional view of the twin-screw shaft;

[0016] Figure 4 This is a schematic diagram of the cutting mechanism according to Embodiment 1 of the present invention;

[0017] Figure 5 This is a schematic diagram of the main view of Embodiment 2 of the present invention;

[0018] Figure 6This is a top view schematic diagram of Embodiment 2 of the present invention;

[0019] Figure 7 This is a schematic diagram of the cutting mechanism in state one of Embodiment 2 of the present invention;

[0020] Figure 8 This is a schematic diagram of the cutting mechanism in state two of Embodiment 2 of the present invention. Detailed Implementation

[0021] Example 1: See Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a semi-solid battery slurry pressing and automatic filling device includes a screw feeder 1, the discharge port of the screw feeder 1 is connected to the inlet of the discharge mold 2, and the outlet of the discharge mold 2 is provided with a battery box 3 and a cutting mechanism 4.

[0022] The screw feeder 1 includes a feeder housing 5 and a screw shaft 6 installed inside the feeder housing 5. One end of the feeder housing 5 is equipped with a gearbox 7 and a motor 8, and the other end is a discharge port. A feed inlet is opened on the top of the feeder housing 5 near the gearbox 7. A feed hopper 9 is installed at the feed inlet. One end of the screw shaft 6 is connected to the gearbox 7, and the other end is suspended, so that there is no obstruction at the discharge port, allowing the battery slurry to be delivered smoothly.

[0023] The screw discharge machine 1 specifically adopts a twin-screw structure, with the two screw shafts 6 rotating in opposite directions. The spiral blades 11 on the two screw shafts 6 are tangential and staggered, which ensures forward conveying and inward extrusion functions while generating extremely low shear stress and does not damage the slurry properties.

[0024] The cutting mechanism 4 includes a pin 12 fixed to the pin 12, a sleeve 13 movably mounted on the pin 12, a bracket 14 fixed on the sleeve 13, and a cutting wire 15 fixed on the bracket 14. The cutting wire 15 is located between the battery box 3 and the discharge mold 2. The length of the cutting wire 15 is greater than the size of the battery box 3. The bracket 14 can rotate sequentially. When the slurry is switched, the bracket 14 will not interfere with the battery box 3 and the discharge mold 2. To facilitate cutting, a handle 10 is provided on the outside of the bracket 14.

[0025] The working principle is as follows: Battery slurry is fed into the screw feeder 1 from the feed hopper 9. The twin screws rotate synchronously in opposite directions, conveying the slurry forward and generating extrusion pressure. When passing through the discharge mold 2, it is extruded into the shape corresponding to its internal cavity, commonly a cylinder or cuboid. In this embodiment, it is a flat rectangle. The battery slurry is formed into a brick-shaped cuboid after passing through the discharge mold 2, and then sent to the battery box 3. When the battery box 3 is full, the support 14 is rotated, allowing the cutting wire 15 to cut the originally continuous battery slurry. The filled battery box 3 is removed, and the empty battery box 3 is placed at the discharge port. The battery slurry that was cut in the discharge mold 2 continues to be discharged into the battery box 3. By repeating the cutting, removing the full battery box, and replacing it with an empty battery box, continuous production can be achieved. Since the battery slurry is not a liquid, the cutting wire 15 is very thin, and a very small gap is left between the battery box 3 and the discharge mold 2 to prevent slurry leakage.

[0026] Example 2: See Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, a semi-solid battery slurry pressing and molding device includes a screw feeder 1, the discharge port of which is connected to the inlet of a discharge mold 2, and the outlet of the discharge mold 2 is provided with a battery box 3 and a cutting mechanism 4. The structure of the screw feeder 1 is the same as that in Embodiment 1, and will not be described in detail again.

[0027] The cutting mechanism 4 includes a base connected to the discharge mold 2. The longitudinal cross-sectional dimensions of the inner cavity of the base are the same as those of the discharge mold 2. A bracket 16 is fixed to the top of the base, and a cutting cylinder 17 is mounted on the bracket 16. A cutting valve plate 18 is fixed to the piston of the cutting cylinder 17. The cutting valve plate 18 has a through hole 19 that matches the longitudinal cross-section of the inner cavity of the discharge mold 2. The discharge mold 2 has a cutting groove that runs vertically through the mold and corresponds to the dimensions of the cutting valve plate 18. The cutting valve plate 18 has a certain thickness to ensure that while cutting the battery slurry, a certain amount of slurry is left in the through hole 19 for sampling and testing. To further improve the slurry discharge accuracy, a third pressure sensor 34 is installed on the discharge mold. 35 in the figure is a scanning device.

[0028] A battery box conveying device is provided at the outlet of the discharge mold 2. The battery box conveying device includes a longitudinal conveyor frame 19, on which a battery box support plate 20 is placed. The longitudinal conveyor frame 19 has a roller conveying device that can drive the battery box support plate 20 to move longitudinally on the longitudinal conveyor frame 19. A lifting and transferring mechanism is provided inside the longitudinal conveyor frame 19. The lifting and transferring mechanism includes a lifting seat 22 connected to the lifting cylinder 21. A transverse conveyor belt 24 connected to the pulley 23 is provided on the lifting seat 22. When the lifting seat 22 is lifted, the battery box support plate 20 is lifted and removed from the longitudinal conveyor frame 19. The transverse conveyor belt 24 can move the battery box support plate 20 laterally, allowing the battery box 3 on the battery box support plate 20 to approach and dock with the discharge mold 2. The battery box support plate 20 has notches 25 on the front and rear sides respectively. The lifting seat 22 is equipped with a side clamping lever cylinder 26 corresponding to the position of the notch 25, which plays a fixing role when the battery box support plate 20 is raised and lowered and when the battery box 3 receives slurry.

[0029] The screw discharge machine 1 is located on one side of the lifting and transplanting mechanism. On the other side of the lifting and transplanting mechanism, a first transverse electric push rod 27 is provided. The end of the first transverse electric push rod 27 is equipped with a first top plate 28 that matches the longitudinal section of the inner cavity of the battery box 3. A first pressure sensor 29 is installed on the first top plate 28. A second transverse electric push rod 30 is provided next to the first transverse electric push rod 27. A second top plate 31 is installed at the end of the second transverse electric push rod 30. A second pressure sensor 32 is installed on the second top plate 31. On the other side of the longitudinal conveyor frame 19, a waste bin 33 is provided. The second transverse electric push rod 27, along with the second top plate 31, extends into the battery box 3 to push out the residual waste material inside the battery box 3 and into the waste bin 33.

[0030] The working principle is as follows: Battery box 3 is placed on battery box support plate 20 and is carried longitudinally along the longitudinal conveyor frame 19 by a roller conveyor device. At the second transverse electric push rod 30, the waste material is pushed out of the battery box 3 through the second top plate 31. Then, it moves longitudinally to the lifting and transfer mechanism, first lifting and then moving laterally, so that the battery box 3 on the battery box support plate 20 is close to the discharge mold 2 and connected together. The screw discharge machine 1 works to convey the semi-cured slurry, which is extruded and formed by the discharge mold 2 and enters the battery box 3. In order to ensure that the slurry can fill the entire battery box 3, the following steps are taken: The battery box is tightly sealed without any dead corners. Before the slurry enters the battery box 3, the first horizontal electric push rod 27 drives the first top plate 28 to block the outlet of the discharge mold 2, and the pushing force is less than the discharge pressure. When the slurry is discharged, the slurry entering the battery box can push the first top plate 28 back until it reaches the other end opening of the battery box, at which point the slurry fills the entire battery box 3. Finally, the cutting mechanism 4 works, and the cutting cylinder 17 drives the cutting valve plate 18 to cut the slurry. After the battery box is reset, it continues to be conveyed forward along the longitudinal conveyor frame 19. The next empty battery box 3 is sent over to repeat the slurry feeding operation.

Claims

1. A semi-solid battery paste compression molding and automatic filling device, characterized by, It includes screw discharging machine, the discharge port of the screw discharging machine is connected with the inlet of discharging die, the outlet of the discharging die is provided with battery box and cutting mechanism, the outlet of the discharging die is provided with battery box conveying device, the battery box conveying device includes longitudinal conveying frame, the longitudinal conveying frame is provided with battery box support plate, the inner side of the longitudinal conveying frame is provided with jacking and transplanting mechanism, the jacking and transplanting mechanism includes jacking seat connected with jacking oil cylinder, the jacking seat is provided with transverse conveying belt connected with pulley; The cutting mechanism includes seat body connected with the discharging die, the seat body is fixed with support on the top, the support is installed with cutting oil cylinder, the piston of the cutting oil cylinder is fixed with cutting valve plate, the cutting valve plate is provided with through hole matched with the longitudinal section of the inner cavity of the seat body, the seat body is provided with cutting groove penetrating up and down and corresponding with the size of the cutting valve plate, the cutting valve plate has a certain thickness, which can cut off the battery paste and leave a certain paste in the through hole for sampling detection; The screw discharging machine is arranged on one side of the jacking and transplanting mechanism, the other side of the jacking and transplanting mechanism is provided with first transverse electric push rod, the end of the first transverse electric push rod is installed with first top plate matched with the longitudinal section of the inner cavity of the battery box.

2. A semi-solid battery slurry compression molding and automatic filling device according to claim 1, characterized by, The screw discharging machine includes discharging machine shell and screw shaft installed in the discharging machine shell, one end of the discharging machine shell is provided with reduction box and motor, the other end is discharge port, one end of the screw shaft is connected with the reduction box, the other end is suspended.

3. A semi-solid battery slurry compression molding and automatic filling device according to claim 1, characterized in that, The screw discharging machine is double-screw structure, the rotating directions of the two screw shafts are opposite, the helical blades on the two screw shafts are tangent and staggered.

4. A semi-solid battery paste compression molding and automatic filling device according to claim 1, characterized in that, The battery box support plate is provided with notch in the middle of the front and rear sides, the jacking seat is installed with side clamping lever cylinder corresponding to the position of the notch.

5. A semi-solid battery paste compression molding and automatic filling device according to claim 1, characterized in that, The first transverse electric push rod is provided with second transverse electric push rod beside it, the end of the second transverse electric push rod is installed with second top plate matched with the longitudinal section of the inner cavity of the battery box, the longitudinal conveying frame is provided with waste barrel on the other side corresponding to the second top plate.

Images