A conductive agent pre-dispersion and ultrasonically enhanced homogenization device

Abstract

This invention discloses a conductive agent pre-dispersion and ultrasonically enhanced homogenization device, comprising a modular pre-dispersion unit, which includes a pre-dispersion chamber for holding the conductive agent. The pre-dispersion chamber includes a homogenization storage tank with a bottom baffle. The conductive agent slurry is contained within the homogenization storage tank and above the bottom baffle. The homogenization storage tank also includes a biaxial star-shaped stirring paddle and an ultrasonic-assisted dispersion structure. By using the biaxial star-shaped stirring paddle, this invention achieves thorough and uniform dispersion of the conductive agent within the pre-dispersion chamber through high-intensity stirring, ensuring the conductivity and stability of the final product and laying a solid foundation for subsequent production processes.

Description

Technical Field

[0001] This utility model specifically relates to a device for pre-dispersing and ultrasonically enhanced homogenizing a conductive agent. Background Technology

[0002] Conductive agents are widely used in new energy batteries. The conductivity of conductive agents is treated during use, and the quality of the conductivity of conductive agents has a great impact on the performance of the battery. Although there are many dispersion devices in the field of new energy batteries, these dispersion devices are either complicated to operate or have poor dispersion performance.

[0003] In order to solve the above problems, this utility model is hereby proposed. Utility Model Content

[0004] The purpose of this invention is to provide a device for pre-dispersing conductive agents and ultrasonically enhanced homogenizing.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A conductive agent pre-dispersion and ultrasonically enhanced homogenization device includes a modular pre-dispersion unit, which includes a pre-dispersion cavity for holding the conductive agent. The pre-dispersion cavity includes a homogenization storage tank, which is provided with a bottom partition. The conductive agent slurry is contained in the homogenization storage tank and above the bottom partition. The homogenization storage tank is also provided with a biaxial star-shaped stirring paddle and an ultrasonic-assisted dispersion structure.

[0007] Preferably, the ultrasonic-assisted dispersion structure includes an ultrasonic transducer, an ultrasonic vibrator, and an ultrasonic generator, with the ultrasonic vibrator connected to the ultrasonic transducer.

[0008] Furthermore, the ultrasonic vibrator is located at the bottom of the homogenate storage tank, in the space below the bottom partition of the storage tank.

[0009] Beneficial technical effects:

[0010] This invention, by setting up a dual-axis star-shaped stirring paddle, enables the conductive agent to be fully and uniformly dispersed in the pre-dispersion chamber through high-intensity stirring, ensuring the conductivity and stability of the final product and laying a solid foundation for subsequent production processes. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the conductive agent pre-dispersion and ultrasonically enhanced homogenization device of this utility model.

[0013] In the diagram, 1 is a dual-axis star-shaped agitator; 2 is a homogenization storage tank; 3 is a conductive agent slurry; 4 is an ultrasonic vibrator; 5 is a bottom baffle of the storage tank; 6 is an ultrasonic transducer; and 7 is a pre-dispersion chamber. Detailed Implementation

[0014] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0015] Reference Figure 1 As shown, a conductive agent pre-dispersion and ultrasonically enhanced homogenization device includes a modular pre-dispersion unit, which includes a pre-dispersion chamber 7 for holding the conductive agent. By injecting a surfactant into the pre-dispersion chamber 7, commonly used surfactants include highly efficient components such as sodium dioctyl sulfonate, the dispersion effect is greatly improved.

[0016] The pre-dispersion chamber 7 includes a homogenization storage tank 2, a storage tank bottom baffle 5 is provided in the homogenization storage tank 2, and conductive agent slurry 3 is contained in the homogenization storage tank 2 and above the storage tank bottom baffle 5. The homogenization storage tank 2 is also provided with a biaxial star-shaped stirring paddle 1, and also includes an ultrasonic-assisted dispersion structure. The ultrasonic-assisted dispersion structure promotes the dispersion and refinement of the conductive agent slurry 3 in the homogenization storage tank 2 and above the storage tank bottom baffle 5 through high-frequency vibration.

[0017] The stirring speed of the dual-shaft star-shaped impeller 1 can be adjusted between 3000 and 4000 revolutions per minute. Through this high-intensity stirring action, the conductive agent can be fully and uniformly dispersed in the pre-dispersion chamber, ensuring the conductivity and stability of the final product and laying a solid foundation for subsequent production processes.

[0018] The ultrasonic-assisted dispersion structure includes an ultrasonic transducer 6, an ultrasonic vibrator 4, and an ultrasonic generator, with the ultrasonic vibrator 4 connected to the ultrasonic transducer 6.

[0019] The ultrasonic vibrator 4 is located at the bottom of the homogenization storage tank 2, in the space below the bottom partition 5 of the storage tank.

[0020] The ultrasonic generator operates within a frequency range of 20 to 40 kHz. Utilizing its high-frequency vibration characteristics, this generator effectively targets agglomerated particles in materials by producing a strong cavitation effect. Cavitation refers to the alternating localized high and low pressure changes caused by ultrasound in a liquid medium, leading to the formation, growth, and rapid collapse of microbubbles, thereby generating powerful impact forces and microjets. This effect can further break down difficult-to-disperse agglomerated particles, refining them into a more uniform particle size distribution. By introducing this ultrasonic-assisted dispersion technology, not only is the dispersion efficiency during the kneading process significantly improved, but the dispersion time is also drastically shortened. Compared to traditional methods, the dispersion time is reduced by more than 30%, greatly optimizing the efficiency of the entire kneading process and product quality.

[0021] The conductive agent pre-dispersion and ultrasonic-enhanced homogenization device is mainly used in the laboratory and also includes a vacuum pump or vacuum extraction device (not shown in the figure). The conductive agent pre-dispersion and ultrasonic-enhanced homogenization device can also manually add the adhesive in steps.

[0022] The dual planetary agitator 1 is used for efficient mixing of materials to ensure uniform mixing; the ultrasonic transducer 6 promotes the dispersion and refinement of slurry 3 through high-frequency vibration; the vacuum pump is used to extract air from the container to prevent the formation of air bubbles; the manual adhesive dispensing step-by-step process precisely controls the addition of adhesive to ensure the accuracy and consistency of each dispensing step.

[0023] The conductive agent pre-dispersion and ultrasonically enhanced homogenization device also includes a manual exhaust valve (not shown in the figure).

[0024] This invention significantly improves slurry stability by using a dual-axis star-shaped stirring paddle. After a 24-hour static observation period, it still showed no stratification, demonstrating excellent stability. At the same time, its viscosity fluctuation was controlled within 5%, ensuring the uniformity and consistency of the slurry during use.

[0025] The conductive agent slurry produced by this invention is particularly suitable for systems with high silicon-based anodes and other systems that are difficult to disperse. It can effectively solve the problems encountered in the dispersion process of these systems and improve the overall material performance.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for pre-dispersing and ultrasonically enhanced homogenizing a conductive agent, characterized in that, It includes a modular pre-dispersion unit, which includes a pre-dispersion cavity for holding a conductive agent. The pre-dispersion cavity includes a homogenization storage tank, which is equipped with a bottom partition. The conductive agent slurry is contained in the homogenization storage tank and above the bottom partition. The homogenization storage tank is also equipped with a biaxial star-shaped stirring paddle and an ultrasonic-assisted dispersion structure.

2. The conductive agent pre-dispersion and ultrasonically enhanced homogenization apparatus according to claim 1, characterized in that, The ultrasonic-assisted dispersion structure includes an ultrasonic transducer, an ultrasonic vibrator, and an ultrasonic generator, with the ultrasonic vibrator connected to the ultrasonic transducer.

3. The conductive agent pre-dispersion and ultrasonically enhanced homogenization device according to claim 2, characterized in that, The ultrasonic vibrator is located at the bottom of the homogenization storage tank, in the space below the bottom partition of the storage tank.

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