A stirring paddle and a gas-liquid coating device

Abstract

The utility model belongs to electrolyte coating technical field, concretely relates to a stirring paddle and a gas -liquid coating equipment. The utility model discloses stirring shaft, two outer layer stirring groups, it includes the inner layer connecting rod of installing on the stirring shaft and installs the inner layer paddle blade at the both ends of inner layer connecting rod, and outer layer stirring group and inner layer stirring group all push the material to the center direction close to the material barrel. The utility model designs the stirring paddle, realizes the side coating side through the stirring paddle to the material and stirs the dispersion, can effectively improve the coating efficiency and coating quality, through power assembly drives the rotation of stirring shaft, and stirring shaft drives the rotation of outer layer stirring group and inner layer stirring group, and pushes the material to the center direction close to the material barrel, and the pushing direction of outer layer stirring group and inner layer stirring group at the both ends of material barrel is opposite, like this improves the flowability of material, promotes the circulation of material, and facilitates the dispersion of material, can effectively prevent the material from hardening, improves the coating efficiency and coating quality.

Description

Technical Field

[0001] This utility model belongs to the field of electrolyte material coating technology, specifically relating to a stirring paddle and a gas-liquid coating device. Background Technology

[0002] Lithium-ion batteries, with their high specific energy and capacity, are now widely used in industries such as electric vehicles and energy storage. The safety of lithium-ion batteries, particularly their potential fire and explosion risks, is a problem the industry has been working to solve.

[0003] Solid-state electrolytes possess advantages such as non-volatility and high thermal stability. All-solid-state batteries using solid-state electrolytes hold promise for fundamentally solving battery safety issues and improving energy density, making them one of the most promising next-generation energy storage devices. As a key component of solid-state batteries, solid-state electrolytes should possess high ionic conductivity, a wide electrochemical window, and excellent chemical stability with both the positive and negative electrodes. Sulfide solid-state electrolytes, with their low ionic conductivity and relatively wide electrochemical window, are particularly suitable as solid-state electrolytes.

[0004] However, sulfide solid electrolytes are chemically unstable. On the one hand, they readily undergo side reactions with water and oxygen, easily leading to their failure. On the other hand, they readily react with lithium metal, generating interfacial products with poor ionic conductivity, increasing interfacial resistance and reducing the battery's coulombic efficiency. Furthermore, lithium dendrites tend to grow along defects on the surface of the sulfide solid electrolyte, as well as internal defects such as pores, cracks, and grain boundaries, potentially penetrating the entire electrolyte and causing a short circuit.

[0005] Therefore, solid electrolytes typically require coating during preparation to improve the conductivity, stability, and other properties of the battery electrodes. Generally, solid electrolyte materials are coated using a coating machine; however, existing coating machines lack stirring components, resulting in low coating efficiency, poor coating quality, easy caking, and incomplete coating. Therefore, there is an urgent need to develop a stirring impeller for electrolyte coating and a gas-liquid coating device with high coating efficiency and good coating quality. Utility Model Content

[0006] The purpose of this invention is to provide a stirring paddle and a gas-liquid coating device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a stirring paddle, including: a stirring shaft, which is hollow in the center, has an inlet at one end, and extends into the material bucket at the other end and is closed at the end;

[0008] Two outer stirring units, each including an outer connecting rod sleeved and mounted on the stirring shaft and outer blades mounted at both ends of the outer connecting rod;

[0009] At least one inner stirring assembly, comprising an inner connecting rod sleeved and mounted on the stirring shaft and inner blades mounted at both ends of the inner connecting rod;

[0010] Both the outer and inner mixing groups push the material towards the center of the hopper.

[0011] Furthermore, the outer connecting rod is perpendicular to the adjacent inner connecting rod, and two adjacent inner connecting rods are perpendicular to each other.

[0012] Furthermore, the outer blades at both ends of each outer stirring assembly are centrally symmetrical about the center of its outer connecting rod, and the inner blades at both ends of each inner stirring assembly are centrally symmetrical about the center of its inner connecting rod.

[0013] Furthermore, the two outer stirring groups are respectively installed on both sides of the inner stirring group.

[0014] Furthermore, the outer blade has rounded corners at both ends, and the inner blade is shaped like a leaf, with rounded corners at both ends as well.

[0015] Furthermore, adjacent outer stirring groups and inner stirring groups, as well as two adjacent inner stirring groups, are separated by bushings.

[0016] Furthermore, there are two inner mixing groups, and the two outer mixing groups are located on both sides of the two inner mixing groups. The two outer mixing groups push the material towards the inner mixing groups, and the two inner mixing groups push the material towards the center of the hopper.

[0017] A gas-liquid coating device includes a frame, a rotating assembly, a power assembly, the aforementioned stirring paddle, and multiple jetting assemblies. The rotating assembly is mounted on the frame, a material tank is connected to the rotating assembly, a stirring shaft is rotatably connected inside the material tank, the power assembly drives the stirring shaft, and multiple jetting holes are provided on the stirring shaft, all of which are located inside the material tank. The jetting assemblies are respectively installed at the corresponding jetting holes.

[0018] The beneficial effects of the stirring paddle and the gas-liquid coating device of this utility model are:

[0019] 1. The coating equipment of this utility model is designed with a stirring paddle, which can stir and disperse the material while coating, effectively preventing the material from caking and improving the coating efficiency and coating quality.

[0020] 2. This utility model uses a power component to drive the stirring shaft to rotate, which in turn drives the outer and inner stirring groups to rotate, pushing the material towards the center of the material bucket. The outer and inner stirring groups, located at the upper and lower ends of the material bucket, push the material in opposite directions, thus improving the fluidity of the material, promoting material circulation, facilitating the dispersal of the material, and achieving good dispersal effect. This effectively prevents material caking and improves the coating quality.

[0021] 3. This utility model sets adjacent outer connecting rods and inner connecting rods perpendicularly, and sets two adjacent inner connecting rods perpendicularly, so that the stirring shaft is subjected to more uniform force, which can effectively improve the service life of the device. The outer and inner blades are evenly distributed, so that there are no dead corners in the stirring, which can effectively improve the stirring and dispersing efficiency, and improve the coating efficiency and coating quality. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is an overall structural diagram of an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional view of the coating device of this utility model.

[0025] In the diagram: 1. Stirring shaft; 2. Outer stirring assembly; 20. Outer connecting rod; 21. Outer blade; 3. Inner stirring assembly; 30. Inner connecting rod; 31. Inner blade; 4. Bushing; 5. Frame; 6. Rotating assembly; 60. Worm; 61. Worm wheel; 7. Power assembly; 70. Motor; 71. Drive gear; 72. Driven gear; 73. Gear ring; 8. Jet assembly; 80. Jet seat; 81. Jet core; 82. Spring seat; 83. Spring; 9. Jet hole; 10. Material bucket; 11. Heating cylinder; 12. Insulation layer; 13. Air slip ring; 14. Electric slip ring. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] like Figures 1-2The present invention provides a specific embodiment of a stirring paddle, comprising a stirring shaft 1, two outer stirring groups 2, and at least one inner stirring group 3. The two outer stirring groups 2 are respectively installed on both sides of the inner stirring group 3, and the inner stirring group 3 is arranged sequentially between the two outer stirring groups 2. The stirring shaft 1 has a hollow structure at its center, with an inlet at one end and the other end extending into the material tank 10 and closed at the other end. The stirring shaft 1 is connected to a power assembly 7. In use, the power assembly 7 drives the stirring shaft 1 to rotate, which in turn drives the outer stirring groups 2 and the inner stirring groups 3 to rotate. The outer stirring groups 2 and the inner stirring groups 3 push the material towards the center of the material tank 10, thereby improving the fluidity of the material, promoting material circulation, impact, compression, and mixing, and effectively preventing material caking. By setting up a stirring paddle, a stirring function is added, and the material is stirred and dispersed while being coated, thereby improving the coating efficiency and coating quality.

[0028] Each outer mixing group 2 includes an outer connecting rod 20 sleeved and mounted on the mixing shaft 1 and outer blades 21 mounted at both ends of the outer connecting rod 20; each inner mixing group 3 includes an inner connecting rod 30 sleeved and mounted on the mixing shaft 1 and inner blades 31 mounted at both ends of the inner connecting rod 30; both outer mixing groups 2 and inner mixing groups 3 push the material towards the center of the material tank 10. Adjacent outer connecting rods 20 and inner connecting rods 30 are arranged perpendicularly, two adjacent inner connecting rods 30 are arranged perpendicularly, the outer connecting rod 20 of the outer mixing group 2 is arranged perpendicularly to the inner connecting rod 30 of the adjacent inner mixing group 3, the inner mixing rods of two adjacent inner mixing groups 3 are arranged perpendicularly, and adjacent mixing groups are staggered by 90°. This distribution arrangement can make the mixing shaft 1 more evenly stressed, and the outer blades 21 and inner blades 31 are evenly distributed, so that there are no dead corners in the mixing, which can effectively improve the mixing and dispersing efficiency, effectively prevent material caking, and improve the coating efficiency and coating quality.

[0029] The outer blades 21 at both ends of each outer mixing assembly 2 are centrally symmetrical about the center of their outer connecting rods 20, and the inner blades 31 at both ends of each inner mixing assembly 3 are centrally symmetrical about the center of their inner connecting rods 30. The corners at both ends of the outer blades 21 are rounded, and the inner blades 31 are shaped like leaves, with rounded corners at both ends as well. The rounded corners of the outer blades 21 and inner blades 31 allow for smoother and more natural contact with the material, reducing resistance when cutting into the material, thereby improving the smoothness of the entire mixing paddle rotation, effectively dispersing the material and preventing caking. To adapt to the shape of the inner wall of the material tank 10, the outer side of the inner blades 31 is arc-shaped.

[0030] To prevent mutual interference during operation, adjacent outer mixing groups 2 and inner mixing groups 3, as well as two adjacent inner mixing groups 3, are separated by bushings 4.

[0031] In this embodiment, there are two inner mixing groups 3, and two outer mixing groups 2 are located on both sides of the inner mixing group 3. The two inner mixing groups 3 are arranged in sequence between the two outer mixing groups 2. The two outer mixing groups 2 push the material towards the inner mixing group 3, and the two inner mixing groups 3 push the material towards the center of the material bucket 10. This improves the fluidity of the material, promotes material circulation, impact and compression, can disperse the material, can effectively prevent the material from caking, and improve the coating efficiency and coating quality.

[0032] See Figure 2A gas-liquid coating device includes a frame 5, a rotating component 6, a power component 7, a stirring paddle, and multiple jetting components 8. The rotating component 6 is mounted on the frame 5, a material tank 10 is connected to the rotating component 6, a stirring shaft 1 is rotatably connected inside the material tank 10, and the power component 7 drives the stirring shaft 1. Multiple jetting holes 9 are opened on the stirring shaft 1, and the multiple jetting holes 9 are all located inside the material tank 10. The jetting components 8 are respectively installed at the jetting holes 9.The rotating assembly 6 drives the material tank 10 to rotate so that the inlet and outlet are vertically facing upwards. Electrolyte raw materials are added into the material tank 10 through the inlet and outlet. After adding the materials, the inlet and outlet are plugged. The rotating assembly 6 then rotates the material tank 10 to a horizontal position. The power assembly 7 drives the stirring paddle. A slip ring 13 is fitted onto one end of the stirring shaft 1 near the power assembly 7. The coating gas / coating solvent enters the channel in the center of the stirring shaft 1 through the slip ring 13 and is ejected through the jet assembly 8 to react with the electrolyte raw materials in the material tank 10. After the coating reaction is complete, the rotating assembly 6 rotates the material tank 10 so that the inlet and outlet are vertically facing downwards, and the coated material is discharged. The material barrel 10 is equipped with an electric heating cylinder 11 and an insulation layer 12. The electric heating cylinder 11 heats the material inside the material barrel 10 to the temperature required for the coating reaction, and the insulation layer 12 keeps it warm, saving energy. To further improve the coating efficiency and coating quality, the material barrel 10 is designed to rotate. The rotation direction of the material barrel 10 is opposite to the rotation direction of the stirring shaft 1, which further promotes material circulation, accelerates the dispersion of materials, and further improves the coating efficiency and coating quality. In this embodiment, the rotating component 6 can adopt a worm gear 61 and worm 60 structure. The material barrel 10 is connected to the worm gear 61. The worm gear 60 is driven to rotate manually or electrically, which drives the worm gear 61 to rotate, and the worm gear 61 drives the material barrel 10 to rotate. The power assembly 7 includes a motor 70, a drive gear 71 sleeved on the stirring shaft 1, a driven gear 72 meshing with the drive gear 71, and a gear ring 73 meshing with the driven gear 72. The material bucket 10 is fixedly connected to the gear ring 73. The stirring shaft 1 is coaxially connected to the output shaft of the motor 70. The power assembly 7 drives the stirring shaft 1 and the material bucket 10 to rotate synchronously in opposite directions, accelerating the dispersion of materials and effectively improving coating efficiency and coating quality. The air jet assembly 8 includes an air jet seat 80 installed in the air jet hole 9, an air jet core 81 inserted into the air jet seat 80, a spring seat 82 sleeved on the end of the air jet core 81, and a spring 83 installed in the spring seat 82. One end of the spring 83 abuts against the spring seat. Inside 82, the other end rests against the jet core 81. The coating gas / coating solvent enters the channel in the center of the stirring shaft 1, generating pressure. The pressure compresses the spring 83, which pushes the jet core 81 outward, causing the coating gas / coating solvent to be sprayed out along the gap between the jet core 81 and the jet seat 80, making the coating gas / coating solvent sprayed evenly. This can effectively improve the coating efficiency and coating quality. An electric slip ring 14 is provided on the end of the material tank 10 near the inlet and outlet for supplying power to the electric heating cylinder 11, which facilitates the installation of the circuit. The principle of the electric slip ring 14 should be known to those skilled in the art. Here, we will not elaborate on how the electric slip ring 14 is installed or how the wire is transmitted.

[0033] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A stirring paddle, characterized in that, include: The stirring shaft (1) has a hollow structure in the center, with an inlet at one end and the other end extending into the material bucket (10) and closed at the other end; Two outer stirring units (2) include an outer connecting rod (20) sleeved on the stirring shaft (1) and outer blades (21) installed at both ends of the outer connecting rod (20); At least one inner stirring assembly (3) includes an inner connecting rod (30) sleeved on the stirring shaft (1) and inner blades (31) installed at both ends of the inner connecting rod (30). Both the outer stirring group (2) and the inner stirring group (3) push the material toward the center of the material bucket (10).

2. The stirring paddle according to claim 1, characterized in that, The outer connecting rod (20) is perpendicular to the adjacent inner connecting rod (30), and two adjacent inner connecting rods (30) are perpendicular to each other.

3. The stirring paddle according to claim 2, characterized in that, The outer blades (21) at both ends of each outer stirring assembly (2) are centrally symmetrical about the center of its outer connecting rod (20), and the inner blades (31) at both ends of each inner stirring assembly (3) are centrally symmetrical about the center of its inner connecting rod (30).

4. The stirring paddle according to claim 3, characterized in that, The two outer stirring groups (2) are respectively installed on both sides of the inner stirring group (3).

5. The stirring paddle according to claim 4, characterized in that, The outer blade (21) has rounded corners at both ends, and the inner blade (31) is shaped like a leaf, with rounded corners at both ends.

6. The stirring paddle according to claim 5, characterized in that, The adjacent outer stirring group (2) and the inner stirring group (3) are separated by bushings (4).

7. A stirring paddle according to claim 6, characterized in that, There are two inner stirring groups (3), and the two outer stirring groups (2) are located on both sides of the two inner stirring groups (3). The two outer stirring groups (2) push the material towards the inner stirring group (3), and the two inner stirring groups (3) push the material towards the center of the material bucket (10).

8. A gas-liquid coating device, characterized in that, The device includes a frame (5), a rotating assembly (6), a power assembly (7), a stirring paddle as described in any one of claims 1-7, and a plurality of jetting assemblies (8). The rotating assembly (6) is mounted on the frame (5). The material tank (10) is connected to the rotating assembly (6). The stirring shaft (1) is rotatably connected to the material tank (10). The power assembly (7) drives the stirring shaft (1). The stirring shaft (1) has a plurality of jetting holes (9). The plurality of jetting holes (9) are all located inside the material tank (10). The jetting assemblies (8) are respectively installed at the jetting holes (9).

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