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Preparation of slurry
The preparation of battery paste is a key step in battery production, which determines the electrochemical properties, mechanical properties and production efficiency of electrode materials. The preparation process of the slurry includes the selection of raw materials, mixing, dispersion and adjustment of viscosity, etc., to ensure the uniformity of the slurry and the fluidity suitable for coating.
Preparation of slurry
The preparation of battery paste is the key step to ensure the high performance of battery. Reasonable selection of raw materials, precise mixing and dispersion processes, appropriate viscosity control, and effective degassing and filtration treatments all improve the homogeneity, stability, and coating quality of the paste, thus ensuring the energy density, cycle life, and safety of the battery.
Main process
Selection of raw materials
The main components of the paste include active material, conductive agent, adhesive and solvent. Different raw materials have an important impact on the performance of the battery, active materials provide energy storage, conductive agents improve electrical conductivity, adhesives ensure electrode attachment, and solvents regulate the fluidity of the slurry.
The selection of appropriate raw materials is the basis of battery slurry quality, which directly affects the electrochemical performance, conductivity and coating quality of the electrode.
Mixing and dispersing of slurry
Through efficient stirring or ball milling methods, the active material, conductive agent, adhesive and solvent are fully mixed and dispersed to ensure the uniformity and stability of the slurry and prevent the agglomeration and deposition of the material.
Uniform mixing and dispersion ensure the consistency and stability of the slurry, which is the key to obtain high-performance electrodes.
Viscosity control of slurry
Control the viscosity of the paste to a moderate range, too high viscosity will affect the coating uniformity, too low may affect the adhesion of the material. Precise viscosity regulation ensures that the paste is suitable for coating and battery performance requirements.
The precise control of viscosity directly affects the coating quality and the mechanical strength of the battery, and the appropriate viscosity ensures that the electrode material is firmly attached and the coating is uniform.
Degassing treatment
The degassing treatment ensures the uniformity and stability of the paste by removing the bubbles generated during the stirring process, and avoids bubbles resulting in uneven coating or reduced battery performance.
Degassing treatment removes bubbles, ensures slurry uniformity, and helps to improve electrode surface quality and battery performance.
Filtration of slurry
The filtration process removes impurities and large particulate matter from the paste, ensuring smooth and consistent electrodes after coating, thereby improving battery performance.
filtration can remove impurities in the slurry, improve the coating quality, ensure smooth electrode surface, improve the stability and performance of the battery.
low-speed car batteries
Low-speed vehicle battery is a kind of battery designed for low-speed electric vehicles, which has the characteristics of clean, environmental protection, high efficiency and economy, and is widely used in electric golf carts, low-speed electric vehicles (LSV), mobile vendors, campus transportation, cargo trucks and so on
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