Pressing machine for sodium ion battery pole piece

Abstract

The utility model discloses a pressing machine of a sodium ion battery pole piece, which relates to the technical field of sodium ion battery production and manufacturing equipment and comprises a base, a control box is fixedly mounted on the upper surface of the base, a supporting assembly is arranged on the base, and the supporting assembly comprises a loading plate fixedly connected with the base. By means of the coupler, the shaft seat and the extension rod, when the rotating roller moves along the surface of the working table, battery pole pieces placed on the working table can be tidied, it is ensured that the battery pole pieces are fully unfolded, stacking or wrinkling is avoided, the quality problem generated after follow-up pressing is completed is avoided, and meanwhile after an electromagnetic core in the rotating roller is powered on, the quality of the battery pole pieces is guaranteed. And certain magnetism can be transmitted to the surface of the rotating roller, so that dust attached to the pole piece can be cleaned through electrostatic interaction in the swinging process, the pole piece is kept clean, impurities are prevented from being introduced in the pressing process, and the production quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium ion battery production and manufacturing equipment, in particular to a pressing machine for sodium ion battery pole pieces. Background Art

[0002] Sodium-ion batteries (SIBs) stand out among current new energy storage devices due to their high safety, strong thermal stability, and excellent electrochemical performance. They are expected to partially replace or supplement lithium-ion batteries. During the SIB manufacturing process, a pressure system typically generates pressure to squeeze the SIB electrode into a mold, thereby changing its thickness and density, improving its performance and quality.

[0003] Reference publication (announcement) number: CN220543944U discloses a pressing machine for sodium-ion battery pole pieces. The machine is designed with a heating device, which is arranged on one side of a workbench. The pole piece is heated before being pressed on the workbench to reduce the moisture in the pole piece, thereby reducing the rebound rate of the pole piece after pressing. At the same time, heating can also help soften the adhesive in the pole piece, making the pole piece more firmly bonded. However, in actual use, due to the small thickness of the sodium-ion battery pole piece, when a device similar to the above-mentioned device pushes the workpiece of the bottom layer of the workpiece box from under the limit plate through the push plate, the pole piece is prone to stacking or generating more wrinkles after being moved to the workbench. Direct pressing will cause damage to the pole piece, reducing production quality. Summary of the Invention

[0004] The purpose of the utility model is to solve the problem in the prior art that the pole piece is not fully unfolded after being moved to the workbench, and direct pressing may cause damage to the pole piece, and a pressing machine for sodium ion battery pole pieces is proposed.

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

[0006] A sodium-ion battery electrode pressing machine includes a base, a control box is fixedly mounted on the upper surface of the base, a support assembly is provided on the base, the support assembly includes a carrier plate fixedly connected to the base, a plurality of support rods are fixedly connected to the upper end of the carrier plate, and the tops of the plurality of support rods are commonly connected to a workbench, a pressing assembly is provided above the support assembly, the pressing assembly includes a hydraulic cylinder, and a pressing plate is provided on the telescopic end of the hydraulic cylinder;

[0007] A plurality of limit rods are respectively provided on the adjacent two sides of the workbench, and the tops of the plurality of limit rods are respectively connected with arc plates, and a roller is installed above the two limit rods on the same side through a driving assembly, and an electromagnetic core is provided inside the roller, wherein a cleaning assembly is commonly installed on the upper ends of the two limit rods, and the cleaning assembly includes a suction nozzle, a guide groove is opened on the suction nozzle, and a hose is connected to the guide groove.

[0008] As a further preferred embodiment of the present technical solution, a fixing plate is vertically mounted on the upper surface of the base, an assembly plate is commonly connected between the fixing plate and the side wall of the control box, and a mounting seat is detachably provided on the assembly plate by multiple sets of bolts.

[0009] As a further preferred embodiment of the present technical solution, the hydraulic cylinder is arranged below the mounting seat, and the top of the hydraulic cylinder is connected to the mounting seat.

[0010] As a further preferred embodiment of the present technical solution, the drive assembly includes a servo motor fixedly mounted on a base, the output shaft of the servo motor is connected to a shaft seat via a coupling, an extension rod is fixedly connected to the side wall of the shaft seat, and the end of the extension rod away from the shaft seat is rotatably connected to the side wall of the roller.

[0011] As a further preferred embodiment of the present technical solution, the servo motor is electrically connected to the control box, and the electromagnetic core is electrically connected to the control box.

[0012] As a further preferred embodiment of the present technical solution, the bottom of the suction nozzle is connected to an arc-shaped plate at a corresponding position through a connecting rod, and the length of the guide groove is equal to the length of the roller.

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

[0014] 1. The utility model provides a coupling, a shaft seat and an extension rod. After the servo motor is started, it will drive the roller to swing. The bottom of the roller is kept on the same horizontal line with the workbench. When moving along the surface of the workbench, the battery pole pieces placed on the workbench can be arranged to ensure that the battery pole pieces are fully unfolded, avoid stacking or wrinkles, and avoid quality problems after subsequent pressing is completed. At the same time, after the electromagnetic core inside the roller is energized, it can transmit a certain amount of magnetism to the surface of the roller, so that the dust attached to the pole piece can be cleaned by electrostatic action during the swinging process, keeping the pole piece clean, avoiding the introduction of impurities during the pressing process, and improving production quality.

[0015] 2. The utility model provides a suction nozzle and a guide groove. After the roller moves to the arc-shaped plate below the suction nozzle, the external suction device connected to the hose generates a strong suction force at the suction nozzle, which can clean the surface of the roller and suck away the dust adsorbed by static electricity, thereby keeping the surface of the roller clean and improving the subsequent cleaning effect of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the main structure of a sodium ion battery electrode pressing machine proposed in the utility model.

[0018] Figure 2 This is a partial cross-sectional structural schematic diagram of a sodium ion battery pole piece pressing machine proposed in the utility model.

[0019] Figure 3 This is a schematic structural diagram of a transmission assembly of a sodium ion battery pole piece pressing machine proposed in the present invention.

[0020] Figure 4 The present invention provides a schematic cross-sectional structural diagram of a rotating roller of a sodium ion battery pole piece pressing machine.

[0021] In the figure: 1. Base; 11. Fixed plate; 12. Assembly plate; 13. Mounting seat; 2. Control box; 3. Support assembly; 31. Loading plate; 32. Support rod; 33. Workbench; 4. Pressing assembly; 41. Hydraulic cylinder; 42. Pressing plate; 5. Limiting rod; 51. Arc plate; 6. Driving assembly; 61. Servo motor; 62. Coupling; 63. Shaft seat; 64. Extension rod; 7. Roller; 71. Electromagnetic core; 8. Cleaning assembly; 81. Suction nozzle; 82. Guide groove; 83. Hose. DETAILED DESCRIPTION

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

[0023] The utility model provides a technical solution: Figure 1-4As shown in the figure, a pressing machine for sodium-ion battery electrode sheets includes a base 1. A control box 2 is fixedly installed on the upper surface of the base 1. A fixing plate 11 is vertically installed on the upper surface of the base 1. An assembly plate 12 is jointly connected between the fixing plate 11 and the side wall of the control box 2. Mounting seats 13 are detachably provided on the assembly plate 12 through multiple groups of bolts. A support component 3 is arranged on the base 1. The support component 3 includes a carrier plate 31 fixedly connected to the base 1. Multiple support rods 32 are fixedly connected to the upper end of the carrier plate 31. A workbench 33 is jointly connected to the tops of the multiple support rods 32. A pressing component 4 is arranged above the support component 3. The pressing component 4 includes a hydraulic cylinder 41. A pressing plate 42 is arranged on the telescopic end of the hydraulic cylinder 41. The hydraulic cylinder 41 is arranged below the mounting seat 13, and the top of the hydraulic cylinder 41 is connected to the mounting seat 13. It should be noted that the sodium-ion battery electrode sheet to be processed is placed on the workbench 33, and the hydraulic cylinder 41 is started, so that the telescopic end of the hydraulic cylinder 41 drives the pressing plate 42 to move downward and finally contacts the workbench 33, thereby completing the pressing of the battery electrode sheet. By selecting a mature commercially available hydraulic system (hydraulic cylinder) with an accurate pressure adjustment function, the output pressure of the hydraulic cylinder 41 can be adjusted according to different electrode sheet specifications and requirements, so as to ensure that the pressure applied to the electrode sheet can be accurately controlled in different production batches and avoid overpressure damage to the electrode sheet.

[0024] As Figure 2 shown, Figure 3 Multiple limiting rods 5 are respectively arranged on two adjacent sides of the workbench 33. Arc-shaped plates 51 are respectively connected to the tops of the multiple limiting rods 5. A roller 7 is installed above the two limiting rods 5 on the same side through a driving component 6. The arc-shaped plates 51 support the roller 7. The driving component 6 includes a servo motor 61 fixedly installed on the base 1. The servo motor 61 is electrically connected to the control box 2. The output shaft of the servo motor 61 is connected to a shaft seat 63 through a coupling 62. An extension rod 64 is fixedly connected to the side wall of the shaft seat 63. One end of the extension rod 64 far from the shaft seat 63 is rotatably connected to the side wall of the roller 7.

[0025] During the working state, the internal components of the control box 2 start the servo motor 61 to run. The output shaft of the servo motor 61 will finally drive the roller 7 to swing 90°, so that the roller 7 contacts the battery electrode sheet on the workbench 33. When the roller 7 moves along the surface of the workbench 33, the generated force will cause the roller 7 to rotate. And since the thickness H1 of the motor electrode sheet is much smaller than the gap H2 between the bottom of the roller 7 and the upper surface of the workbench 33, that is, H1 < H2, and the electrode sheet and the workbench 33 are relatively smooth, the roller 7 will push the wrinkled part of the electrode sheet to unfold, so that the battery electrode sheet remains flat.

[0026] As Figure 2 shown, Figure 4As shown, an electromagnetic core 71 is provided inside the roller 7. The electromagnetic core 71 is electrically connected to the control box 2. When the roller 7 swings along the workbench 33, the internal components of the control box 2 energize the electromagnetic core 71. At this time, the electromagnetic core 71 transmits a certain amount of magnetism to the surface of the roller 7. Therefore, while the pole pieces are being arranged, the surface of the pole pieces is also cleaned, and the adhered dust is transferred to the surface of the roller 7, keeping the surface of the pole pieces clean and preventing impurities from affecting battery performance during the subsequent pressing process. The control box 2 can be a PLC or other controller to control the power supply of the servo motor 61 and the electromagnetic core 71 respectively. Furthermore, the roller 7 is made of silicon steel, which can improve the efficiency of magnetic transmission and reduce energy loss.

[0027] During the contact between the roller 7 and the battery pole piece, a local electrostatic field will be generated on the surface of the pole piece under the influence of the electromagnetic core 71. As the roller 7 moves, the particles of active materials, conductive agents, etc. on the surface of the pole piece are rearranged or displaced, thereby improving the flatness and uniformity of the pole piece surface. At the same time, the migration speed of sodium ions in the pole piece is accelerated, which can improve the density uniformity and performance stability of the pole piece, help reduce the internal resistance of the battery, and improve the battery's charge and discharge performance and power density.

[0028] The upper ends of the two limiting rods 5 are jointly mounted with a cleaning assembly 8, which includes a suction nozzle 81, a guide groove 82 formed on the suction nozzle 81, and a hose 83 connected to the guide groove 82. The bottom of the suction nozzle 81 is connected to the corresponding curved plate 51 through a connecting rod, and the length of the guide groove 82 is equal to the length of the roller 7. Here, when the roller 7 moves to the curved plate 51 below the suction nozzle 81, the electromagnetic core 71 is no longer energized, and the external suction device is activated to suck away the dust adhering to the surface of the roller 7 through the hose 83 and the guide groove 82, so that the roller 7 is kept clean and impurities are avoided during the subsequent swinging process. Furthermore, a certain gap is maintained between the curved plate 51 and the workbench 33. After the roller 7 is out of contact with the workbench 33, the roller 7 will keep rotating for a short time due to inertia, increasing the cleaning area of ​​the suction nozzle 81. Therefore, with the flexible adjustment of the speed of the servo motor 61, it can be ensured that the suction nozzle 81 can fully clean the roller 7.

[0029] Each embodiment in this specification is described in a related manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A pressing machine for sodium ion battery pole pieces, comprising a base (1), characterized in that: A control box (2) is fixedly mounted on the upper surface of the base (1), and a support assembly (3) is provided on the base (1), the support assembly (3) comprises a loading plate (31) fixedly connected to the base (1), a plurality of support rods (32) are fixedly connected to the upper end of the loading plate (31), and the tops of the plurality of support rods (32) are commonly connected to a workbench (33), and a pressing assembly (4) is provided above the support assembly (3), the pressing assembly (4) comprises a hydraulic cylinder (41), and a pressing plate (42) is provided on the telescopic end of the hydraulic cylinder (41); A plurality of limiting rods (5) are respectively provided on adjacent sides of the workbench (33), and the tops of the plurality of limiting rods (5) are respectively connected to arc-shaped plates (51), and a roller (7) is installed above the two limiting rods (5) on the same side through a driving assembly (6), and an electromagnetic core (71) is provided inside the roller (7), wherein the upper ends of the two limiting rods (5) are commonly provided with a cleaning assembly (8), and the cleaning assembly (8) includes a suction nozzle (81), and a guide groove (82) is provided on the suction nozzle (81), and a hose (83) is connected to the guide groove (82).

2. A sodium ion battery pole piece pressing machine according to claim 1, characterized in that: A fixing plate (11) is vertically mounted on the upper surface of the base (1), an assembly plate (12) is commonly connected between the fixing plate (11) and the side wall of the control box (2), and a mounting seat (13) is detachably mounted on the assembly plate (12) via a plurality of sets of bolts.

3. The pressing machine for sodium ion battery pole pieces according to claim 2, characterized in that: The hydraulic cylinder (41) is arranged below the mounting seat (13), and the top of the hydraulic cylinder (41) is connected to the mounting seat (13).

4. The pressing machine for sodium ion battery pole pieces according to claim 1, characterized in that: The driving assembly (6) comprises a servo motor (61) fixedly mounted on the base (1); an output shaft of the servo motor (61) is connected to a shaft seat (63) via a coupling (62); an extension rod (64) is fixedly connected to a side wall of the shaft seat (63); and an end of the extension rod (64) away from the shaft seat (63) is rotatably connected to the side wall of the roller (7).

5. The pressing machine for sodium ion battery pole pieces according to claim 4, characterized in that: The servo motor (61) is electrically connected to the control box (2), and the electromagnetic core (71) is electrically connected to the control box (2).

6. The sodium ion battery pole piece pressing machine according to claim 1, characterized in that: The bottom of the suction nozzle (81) is connected to the arc-shaped plate (51) at a corresponding position via a connecting rod, and the length of the guide groove (82) is equal to the length of the rotating roller (7).

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