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China Slot Die Coating Machine for Battery Electrode Sheet - Suppliers & Factory for Lithium-Ion Cell Preparation
Equipment Characteristics
The slot die coating machine plays a pivotal role in the manufacturing of lithium batteries by precisely applying thin, uniform coatings of various materials onto conductive foils, typically copper for the anode and aluminum for the cathode. This process is crucial to ensure that the batteries meet stringent design specifications regarding dimensions, weight, and performance characteristics.
Comprising essential components such as the unwinding unit, head unit, oven unit, traction unit, and winding unit, the slot die coater facilitates the smooth operation of the coating process. Each unit contributes to different stages of the process, from material preparation to final winding, ensuring efficiency and consistency throughout.
Versatility in Coating
The slot die coating machine accommodates a wide range of slurry systems used in battery production. This includes oily or aqueous formulations of materials such as ferrous lithium phosphate, lithium cobaltate, ternary compounds, lithium manganate, lithium nickel cobalt manganate, sodium ion active materials, and graphite-based negative electrodes like lithium titanate. This versatility enables manufacturers to adapt to various battery chemistries and formulations, supporting flexibility and innovation in battery design.
Precision and Performance
Known for its high precision, consistency, and capability for high-speed shoe coating, the slot die coater stands as the preferred choice for lithium battery production. Its ability to uniformly apply coatings at controlled thicknesses enhances the quality and reliability of battery manufacturing processes. This precision is critical in achieving uniform electrode coatings, which directly impact battery performance, longevity, and safety.
In conclusion
The slot die coating machine not only supports the current demands of lithium battery manufacturing but also enables advancements in battery technology by facilitating the development of next-generation materials and designs. Its role in ensuring uniformity and reliability underscores its importance in the pursuit of efficient energy storage solutions.
Slot Die Battery Electrode Coating Machine For Lithium Cell Production-Desktop Type
Slot Die Battery Electrode Coating Machine For Lithium Cell Production-Integrated Type
Specification of Equipment
| Product |
|
|
|---|---|---|
| Model | WS-（YTSTBJ） | WS-（ZMSTBJ） |
| Equipment dimension | L1800*W1200*H1550(mm) | L1800*W1200*H1550(mm) |
| Equipment weight | 1T | 1T |
| Power supply | AC380V, Main power switch 40A | AC380V, Main power switch 40A |
| Compressed air source | Dry gas ≥ 0.7MPA, 20L/min. | Dry gas ≥ 0.7MPA, 20L/min. |
| Slurry solid content (wt%) | 16.35-75% | 16.35-75% |
| Slurry specific gravity (g/cm3) | / | / |
| Viscosity (mPa.s) | Positive electrode 4000-1800 MPa.s Negative electrode 3000-8000 MPa.s |
Positive electrode 4000-1800 MPa.s Negative electrode 3000-8000 MPa.s |
| Oven temperature range | RT to 150°C | RT to 150°C |
| Oven temperature error | Temperature deviation ≤ ± 3 degrees Celsius | Temperature deviation ≤ ± 3 degrees Celsius |
| Single-sided areal density error | ≤±1.5um | ≤±1.5um |
| Double-sided areal density error | ≤±2.5um | ≤±2.5um |
Frequently Asked Questions (FAQ)
What is the role of a slot die coating machine in lithium battery production?
The slot die coating machine is used to precisely apply thin, uniform coatings of active slurry materials onto conductive copper foils (for anodes) or aluminum foils (for cathodes) to ensure batteries meet strict design and performance requirements.
What slurry chemistries can this slot die coating equipment support?
It supports a wide range of oily and aqueous slurry formulations, including ferrous lithium phosphate, lithium cobaltate, sodium ion active materials, ternary compounds, lithium manganate, and graphite-based negative electrodes.
What is the typical coating precision of this machine?
This equipment offers high precision with a single-sided areal density error of ≤±1.5um and a double-sided areal density error of ≤±2.5um, ensuring high consistency and reliability of the battery cells.
What are the core components of the slot die coating system?
The slot die coating machine consists of five essential units: the unwinding unit, head unit, oven unit, traction unit, and the winding unit, which collectively manage the entire coating and drying process.
What is the operating temperature range of the drying oven?
The oven unit operates from room temperature (RT) up to 150°C, with a strict temperature deviation control of ≤ ±3 degrees Celsius to prevent overheating and ensure even drying.
What viscosity range is suitable for the coating slurry?
The machine handles positive electrode slurries with a viscosity of 4000-1800 MPa.s, and negative electrode slurries with a viscosity of 3000-8000 MPa.s.