An ultrasonic slurry making device for battery electrode sheet manufacturing

Abstract

The utility model discloses a kind of ultrasonic pulping equipment for battery pole piece manufacturing, it is related to ultrasonic pulping equipment technical field, including jar body, jar body lower end is equipped with support frame, arc-shaped support rod is fixedly connected between support frame, arc-shaped support rod upper end is fixedly connected with horizontally placed jar body outer wall, push mechanism is installed in jar body inside, dispersion mechanism is installed in push mechanism inside;The utility model is through the cooperation of servo motor and rotating cylinder, auger blade, it is convenient to improve the uniformity of slurry pushing, shorten stirring time, reduce energy consumption, and then high-efficiency slurry pushing function can be realized, then through the cooperation of ultrasonic transducer and amplitude rod, ultrasonic dispersion port, it is convenient to promote the dispersion effect of high viscosity slurry, avoid material degradation, improve dispersion efficiency and quality, and then uniform dispersion slurry function can be realized, finally solve the existing for battery pole piece manufacturing ultrasonic pulping equipment dispersion efficiency low, mixed uneven problem.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic pulping equipment technology, and in particular to an ultrasonic pulping equipment for manufacturing battery electrodes. Background Technology

[0002] In the battery electrode manufacturing process, slurry preparation is the core process that determines the performance of the electrode. The dispersion uniformity of the slurry (the particle size of the agglomerates needs to be controlled below 5μm) and stability (viscosity fluctuation range ±5%) directly affect the electrochemical performance of the electrode (such as capacity density and cycle life). Existing ultrasonic slurry preparation equipment for battery electrode manufacturing suffers from several drawbacks during operation. Uneven shear force distribution during mechanical stirring results in poor dispersion efficiency and the presence of dead zones (over 5%) within the tank. For high-viscosity slurries (viscosity > 5000 mPa·s), extended stirring times (over 2 hours) are necessary. This not only increases energy consumption (exceeding the rated value by 40%) but may also lead to material degradation due to prolonged stirring (e.g., a 10%–15% decrease in binder molecular weight). Furthermore, some equipment suffers from poorly designed feeding mechanisms, resulting in significant variations in slurry residence time within the tank (maximum deviation exceeding 30 seconds), further exacerbating uneven mixing. Therefore, solutions to these technical problems are needed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an ultrasonic slurry preparation device for manufacturing battery electrodes.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an ultrasonic slurry preparation device for manufacturing battery electrode sheets, comprising a tank, a support frame installed at the lower end of the tank, an arc-shaped support rod fixedly connected between the support frames, the upper end of the arc-shaped support rod being fixedly connected to the outer wall of the horizontally placed tank, a pushing mechanism installed inside the tank, a dispersing mechanism installed inside the pushing mechanism, and a pressurized conveying mechanism connected to one end of the tank.

[0005] Preferably, three conveying pipes are equidistantly connected to one side of the tank, and an observation window is installed on one side of the tank.

[0006] Preferably, the feeding mechanism includes a rotating cylinder horizontally rotatably installed inside the tank body, a servo motor is installed at one end of the tank body, the output end of the servo motor passes through the tank body and is coaxially fixed to one end of the rotating cylinder, and auger blades are wound around and fixed to the circumference of the rotating cylinder, and the auger blades are tightly fitted to the inner wall of the tank body.

[0007] Preferably, the rotating cylinder has multiple ultrasonic dispersion ports equidistantly spaced along its annular shape.

[0008] Preferably, an ultrasonic transducer is installed at the other end of the tank, and an amplitude transformer is fixedly connected to one end of the ultrasonic transducer. The amplitude transformer horizontally passes through the tank and is located in the middle of the tank.

[0009] Preferably, the pressurized conveying mechanism includes a connecting pipe connected to one side of the tank, a solenoid valve installed on the connecting pipe, and the other end of the connecting pipe fixed to a screw pump. The screw pump is connected to a coating die head through the connecting pipe, and a pressure sensor is installed on the connecting pipe between the screw pump and the coating die head.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of a servo motor with a rotating cylinder and auger blades, facilitates the improvement of the uniformity of slurry delivery, shortens the stirring time, and reduces energy consumption, thereby achieving the function of efficient slurry delivery; through the cooperation of an ultrasonic transducer with an amplitude transformer and an ultrasonic dispersion port, it facilitates the improvement of the dispersion effect of high-viscosity slurry, avoids material degradation, and improves dispersion efficiency and quality, thereby achieving the function of uniform slurry dispersion; furthermore, through the cooperation of a screw pump with a pressure sensor and a coating die head, it facilitates the connection with subsequent coating processes, improves the continuity from slurry preparation to coating, and thus achieves the function of stable slurry delivery, ultimately solving the problems of low dispersion efficiency and uneven mixing in existing ultrasonic slurry preparation equipment used for battery electrode manufacturing. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the other side proposed in this utility model; Figure 3 This is a side view sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the internal overall three-dimensional structure proposed in this utility model.

[0012] The following are the components listed in the diagram: 1. Tank body; 2. Support frame; 3. Observation window; 4. Feed pipe; 5. Servo motor; 6. Solenoid valve; 7. Screw pump; 8. Pressure sensor; 9. Coating die head; 10. Ultrasonic transducer; 11. Screw blade; 12. Rotating cylinder; 13. Ultrasonic dispersion port. Detailed Implementation

[0013] 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.

[0014] Example: See Figures 1 to 4 This utility model discloses an ultrasonic slurry preparation device for battery electrode manufacturing, comprising a tank body 1, a support frame 2 installed at the lower end of the tank body 1, and arc-shaped support rods fixedly connected between the support frames 2. The upper end of the arc-shaped support rods is fixedly connected to the outer wall of the horizontally placed tank body 1. A pushing mechanism is installed inside the tank body 1, and a dispersing mechanism is installed inside the pushing mechanism. A pressurized conveying mechanism is connected to one end of the tank body 1. The basic frame is constructed by the tank body 1, the support frame 2, and the arc-shaped support rods. With the help of the pushing mechanism, the dispersing mechanism, and the pressurized conveying mechanism, the slurry preparation process for battery electrode manufacturing is easily realized. Three equidistant supports are connected to one side of the tank body 1. The tank 1 has a conveying pipe 4 and an observation window 3 installed on one side. The conveying pipe 4 and the observation window 3 on one side of the tank 1 facilitate the conveying of materials and the observation of the pulping process. The pushing mechanism includes a rotating cylinder 12 that is horizontally installed inside the tank 1. A servo motor 5 is installed at one end of the tank 1. The output end of the servo motor 5 passes through the tank 1 and is coaxially fixed to one end of the rotating cylinder 12. Screw blades 11 are wound around and fixed to the circumference of the rotating cylinder 12. The screw blades 11 are tightly fitted to the inner wall of the tank 1. The rotating cylinder 12, the servo motor 5 and the screw blades 11 inside the tank 1 facilitate the movement of materials inside the tank.

[0015] In this invention, a plurality of ultrasonic dispersion ports 13 are equidistantly arranged along the annular ring on the rotating cylinder 12. The ultrasonic dispersion ports 13 on the rotating cylinder 12 facilitate the application of ultrasonic energy to the material. An ultrasonic transducer 10 is installed at the other end of the tank body 1. An amplitude transformer is fixedly connected to one end of the ultrasonic transducer 10. The amplitude transformer horizontally penetrates the tank body 1 and is located in the middle of the tank body 1. The ultrasonic transducer 10 and the amplitude transformer on the tank body 1 facilitate ultrasonic dispersion and slurry preparation of the material. The pressurized conveying mechanism includes a connecting pipe connected to one side of the tank body 1. A solenoid valve 6 is installed on the connecting pipe, and the other end of the connecting pipe is fixedly connected to a screw pump 7. The screw pump 7 is connected to a coating die head 9 through the connecting pipe, and a pressure sensor 8 is installed on the connecting pipe between the screw pump 7 and the coating die head 9. The prepared slurry is pressurized and conveyed to the coating process through the connecting pipe on one side of the tank body 1, the solenoid valve 6, the screw pump 7, the coating die head 9, and the pressure sensor 8.

[0016] Working Principle: In use, different raw materials, such as active substances, binders, and solvents, are first injected into the tank 1 in proportion through three feeding pipes 4. The amount of raw materials added and the state of mixing can be observed through the observation window 3. Then, the servo motor 5 is started, which drives the rotating drum 12 to rotate horizontally inside the tank 1 through the output end. The auger blades 11 on the periphery of the rotating drum 12 rotate together, and the auger blades 11 are in close contact with the inner wall of the tank 1. During the rotation, the raw materials are pushed and stirred, so that the different raw materials are initially mixed to form a slurry prototype. At the same time, the ultrasonic transducer 10 is started, which converts electrical energy into high-frequency mechanical vibration and transmits the vibration to the slurry in the middle of the tank 1 through the amplitude transformer. The ultrasonic waves generated by the high-frequency vibration form alternating dense and sparse waves in the slurry, so that the particles in the slurry are strongly impacted. The impact and shearing action effectively breaks up particle agglomeration, achieving uniform dispersion of raw materials. Furthermore, the ultrasonic dispersion port 13 on the rotating cylinder 12 allows the ultrasonic waves to act more evenly on the slurry. Combined with the continuous pushing of the auger blades 11, all the slurry in the tank 1 passes through the ultrasonic action area, ensuring uniform dispersion and improving the stability and consistency of the slurry. After slurry preparation, the solenoid valve 6 is opened, and the screw pump 7 is started. The rotating screw generates suction and pushing force, drawing the slurry in the tank 1 through the connecting pipe and pressurizing it for transport. At the same time, the pressure sensor 8 monitors the pressure during the transport process in real time, ensuring that the pressure is stable within a suitable range to avoid excessive pressure causing slurry splashing or excessive pressure affecting the transport efficiency. Finally, the slurry is transported through the connecting pipe to the coating die head 9, providing a uniform and stable slurry for the coating process of the battery electrode sheets.

[0017] 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. An ultrasonic slurry preparation device for manufacturing battery electrodes, comprising a tank (1), characterized in that: The lower end of the tank (1) is equipped with a support frame (2), and an arc-shaped support rod is fixed between the support frames (2). The upper end of the arc-shaped support rod is fixed to the outer wall of the horizontally placed tank (1). A pushing mechanism is installed inside the tank (1), and a dispersing mechanism is installed inside the pushing mechanism. One end of the tank (1) is connected to a pressurized conveying mechanism.

2. The ultrasonic slurry preparation equipment for manufacturing battery electrodes according to claim 1, characterized in that: Three conveying pipes (4) are equidistantly connected to one side of the tank (1), and an observation window (3) is installed on one side of the tank (1).

3. The ultrasonic slurry preparation equipment for manufacturing battery electrodes according to claim 2, characterized in that: The feeding mechanism includes a rotating cylinder (12) that is horizontally rotatably installed inside the tank (1). A servo motor (5) is installed at one end of the tank (1). The output end of the servo motor (5) passes through the tank (1) and is coaxially fixed to one end of the rotating cylinder (12). Screw blades (11) are wound around and fixed to the circumference of the rotating cylinder (12). The screw blades (11) are tightly fitted to the inner wall of the tank (1).

4. The ultrasonic slurry preparation equipment for manufacturing battery electrodes according to claim 3, characterized in that: The rotating cylinder (12) has multiple ultrasonic dispersion ports (13) equidistantly spaced along its annular edge.

5. An ultrasonic slurry preparation device for manufacturing battery electrodes according to claim 3, characterized in that: An ultrasonic transducer (10) is installed at the other end of the tank (1). An amplitude transformer is fixed to one end of the ultrasonic transducer (10). The amplitude transformer passes horizontally through the tank (1) and is located in the middle of the tank (1).

6. An ultrasonic slurry preparation device for manufacturing battery electrodes according to claim 5, characterized in that: The pressurized conveying mechanism includes a connecting pipe connected to one side of the tank (1), a solenoid valve (6) is installed on the connecting pipe, and the other end of the connecting pipe is fixed to a screw pump (7). The screw pump (7) is connected to a coating die (9) through the connecting pipe, and a pressure sensor (8) is installed on the connecting pipe between the screw pump (7) and the coating die (9).

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