Pole piece plating equipment for sodium ion battery production

Abstract

The utility model relates to the technical field of pole piece plating equipment, in particular to pole piece plating equipment for sodium ion battery production, which comprises an immersion liquid pool, a first stirring blade and a processing basket, a stirring frame and a swing frame are respectively and fixedly mounted on two sides of the immersion liquid pool, a first electric telescopic rod is fixedly mounted at the upper end of the stirring frame, and a second electric telescopic rod is fixedly mounted at the lower end of the swing frame. The first electric telescopic rod is connected with a first transmission rod through a first connecting rod, and first stirring blades are fixedly mounted at the lower end of the first transmission rod. According to the equipment, the first stirring blade and the second stirring blade move in opposite directions, so that the uniformity of a plating solution is effectively improved, local concentration nonuniformity is avoided, and the quality and the consistency of a plating layer are remarkably improved. Moreover, the two groups of second electric telescopic rods are fixed at the top of the swinging frame, and the processing basket is driven to swing in the plating solution at the frequency of 5 times per minute, so that the full contact between the pole piece and the plating solution is enhanced, and the plating efficiency and uniformity are improved.

Description

Technical Field

[0001] This utility model relates to the field of electrode coating technology, and in particular to an electrode coating device for sodium-ion battery production. Background Technology

[0002] In the production process of sodium-ion batteries, electrode coating is one of the key steps to ensure battery performance and lifespan. The quality of electrode coating directly affects the electrochemical performance, cycle stability, and safety of the battery. Therefore, the performance of coating equipment is of great significance to the overall quality and efficiency of battery production. Currently, electrode coating equipment in related technologies often uses static immersion or simple stirring, which makes it difficult to effectively mix the coating solution, resulting in significant local concentration differences in the coating solution within the immersion tank. This concentration inhomogeneity leads to inconsistent coating thickness on the electrode surface, affecting coating quality and battery consistency. Furthermore, the electrodes are usually in a static state during the coating process, limiting sufficient contact between the coating solution and the electrode surface. This insufficient contact reduces coating efficiency and further exacerbates the problem of coating uniformity. Therefore, it is necessary to improve current electrode coating equipment to solve the above problems.

[0003] The information disclosed in this background section is only for understanding the background technology of the inventive concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0004] The purpose of this invention is to provide an electrode coating device for sodium-ion battery production, addressing the problem that the coating devices mentioned in the background art mostly employ static immersion or simple stirring, which makes it difficult to effectively mix the coating solution, resulting in significant local concentration differences in the coating solution within the immersion tank. This concentration inhomogeneity leads to inconsistent coating thickness on the electrode surface, affecting coating quality and battery consistency. Furthermore, the electrodes are typically placed statically during the coating process, limiting sufficient contact between the coating solution and the electrode surface. This insufficient contact reduces coating efficiency and further exacerbates the problem of coating uniformity.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An electrode coating device for sodium-ion battery production includes an immersion tank, a first stirring blade, and a processing basket. A stirring frame and a swing frame are fixedly installed on both sides of the immersion tank. A first electric telescopic rod is fixedly installed at the upper end of the stirring frame, and the first electric telescopic rod is connected to a first transmission rod via a first connecting rod. A first stirring blade is fixedly installed at the lower end of the first transmission rod, and the front end of the first electric telescopic rod is connected to a transmission connecting rod. The transmission connecting rod is connected to a second transmission rod via a second connecting rod, and a second stirring blade is fixedly installed at the lower end of the second transmission rod. Two sets of second electric telescopic rods are fixedly installed at the upper end of the swing frame, and the second electric telescopic rods are connected to a swing rod via a third transmission rod. A processing basket is fixedly installed at the lower end of the swing rod.

[0007] As a preferred technical solution, an inlet valve is installed on one side of the immersion tank, and the inlet valve is connected to the outlet on the partition through an inlet pipe. A drain valve is also installed on one side of the immersion tank.

[0008] As a preferred technical solution, the inner wall of the immersion tank is coated with graduation lines.

[0009] As a preferred technical solution, a controller is installed at the upper end of the swing frame, and the controller is electrically connected to the first electric telescopic rod and the second electric telescopic rod.

[0010] The beneficial effects of this utility model are:

[0011] With this equipment, the first and second stirring blades move in opposite directions, which effectively improves the uniformity of the plating solution and avoids local uneven concentration, thereby significantly improving the quality and consistency of the coating.

[0012] Furthermore, two sets of second electric telescopic rods are fixed to the top of the swing frame. By driving the processing basket to swing in the plating solution at a frequency of 5 times / minute, the full contact between the electrode and the plating solution is enhanced, thereby improving the plating efficiency and uniformity. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an electrode coating equipment for sodium-ion battery production proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the stirring frame and swing frame of the electrode coating equipment for sodium-ion battery production proposed in this utility model.

[0015] In the diagram: 1 Immersion tank, 2 Stirring frame, 21 First electric telescopic rod, 22 First connecting rod, 23 First transmission rod, 24 First stirring blade, 25 Transmission connecting rod, 26 Second connecting rod, 27 Second transmission rod, 28 Second stirring blade, 3 Swing frame, 31 Second electric telescopic rod, 32 Third transmission rod, 33 Swing rod, 34 Processing basket, 4 Inlet valve, 5 Inlet pipe, 6 Baffle, 7 Outlet, 8 Scale line, 9 Drain valve, 10 Controller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] Reference Figure 1-2 An electrode coating device for sodium-ion battery production includes an immersion tank 1, a first stirring blade 24 and a processing basket 34. The immersion tank 1 is made of corrosion-resistant stainless steel and is used to hold the coating solution. The inner wall is sprayed with an anti-adhesion coating. The bottom of the tank is designed to be inclined to facilitate drainage. The coating solution can enter the inlet pipe 5 through the inlet valve 4 and be injected to the specified position of the scale line 8.

[0020] The stirring frame 2 is fixed to one side of the immersion tank 1. The first connecting rod 22 on the stirring frame 2 is connected to the first transmission rod 23 by a pin. The first stirring blade 24 is welded to the end of the first transmission rod 23. The stirring blade is a paddle blade and is made of polytetrafluoroethylene.

[0021] The transmission link 25 extends from the front end of the first electric telescopic rod 21 and is connected to the second link 26 through a pin, driving the second transmission rod 27 and the second stirring blade 28. The two stirring blades swing in opposite directions, and the frequency is adjustable from 10 to 30 times / minute.

[0022] Two sets of second electric telescopic rods 31 are fixed in parallel to the top of the swing frame 3, with a stroke of 0-30cm, and the output end is connected to the third transmission rod 32 through a hinge.

[0023] The end of the third transmission rod 32 is hinged to the swing rod 33. The lower end of the swing rod 33 is welded to the processing basket 34. The processing basket 34 is a hollow mesh structure made of titanium alloy. It has a slot inside for fixing the electrode sheet, so that the processing basket can be driven to swing back and forth in the plating solution at a frequency of 5 times / minute.

[0024] In one embodiment, the electrode to be plated is placed in the processing basket 34, ensuring adequate gaps between the electrodes for sufficient contact with the plating solution. Then, the drain valve 9 is closed, the inlet valve 4 is opened, and the plating solution is injected into the immersion tank 1 through the inlet pipe 5 until the liquid level reaches the 85cm mark on the inner wall. The inlet valve 4 is then closed. Next, the plating stage begins. The controller 10 activates the first electric telescopic rod 21, driving the first stirring blade 24 and the second stirring blade 28 at a frequency of 30 times / minute. The first stirring blade 24 and the second stirring blade 28 oscillate in opposite directions, stirring the plating solution to maintain its uniform concentration. Simultaneously, the second electric telescopic rod 31 is activated, driving the processing basket 34 to oscillate in the plating solution at a lower frequency of 5 times / minute, ensuring sufficient contact between the electrode and the plating solution, thereby improving plating efficiency and uniformity. The entire plating process is set to last for 30 minutes. Finally, at the end of the processing stage, after the plating is completed, the controller 10 stops the equipment; the drain valve 9 is opened to discharge the waste liquid. After the waste liquid is discharged, the electrode sheet in the processing basket 34 is taken out for subsequent processing steps such as cleaning and drying.

[0025] In this embodiment, the first and second stirring blades move in opposite directions, which effectively improves the uniformity of the plating solution and avoids local uneven concentration, thereby significantly improving the coating quality and consistency.

[0026] Furthermore, two sets of second electric telescopic rods are fixed to the top of the swing frame. The travel range of the electric telescopic rods is adjustable from 0 to 30 cm. By driving the processing basket to swing in the plating solution at a frequency of 5 times / minute, the full contact between the electrode and the plating solution is enhanced, and the plating efficiency and uniformity are improved.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A kind of polar piece plating equipment of sodium ion battery production, including immersion pool (1), first stirring blade (24) and processing basket (34), it is characterized in that, A stirring frame (2) and a swing frame (3) are fixedly installed on both sides of the immersion tank (1). A first electric telescopic rod (21) is fixedly installed on the upper end of the stirring frame (2). The first electric telescopic rod (21) is connected to the first transmission rod (23) through the first connecting rod (22). A first stirring blade (24) is fixedly installed on the lower end of the first transmission rod (23). The front end of the first electric telescopic rod (21) is connected to the transmission connecting rod (25). The transmission connecting rod (25) is connected to the second transmission rod (27) through the second connecting rod (26). A second stirring blade (28) is fixedly installed on the lower end of the second transmission rod (27). Two sets of second electric telescopic rods (31) are fixedly installed on the upper end of the swing frame (3). The second electric telescopic rods (31) are connected to the swing rod (33) through the third transmission rod (32). A processing basket (34) is fixedly installed on the lower end of the swing rod (33).

2. The electrode tab plating apparatus for sodium-ion battery production of claim 1, wherein, An inlet valve (4) is installed on one side of the immersion tank (1). The inlet valve (4) is connected to the outlet (7) on the partition (6) through an inlet pipe (5). A drain valve (9) is also installed on one side of the immersion tank (1).

3. The electrode tab plating apparatus for sodium-ion battery production of claim 1, wherein, The inner wall of the immersion tank (1) is coated with graduation lines (8).

4. The electrode tab plating apparatus for sodium-ion battery production of claim 1, wherein, The upper end of the swing frame (3) is equipped with a controller (10), and the controller (10) is electrically connected to the first electric telescopic rod (21) and the second electric telescopic rod (31).

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