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China Slot Die Coating Machine Suppliers - Battery Electrode Sheet Coater from Factory for Lithium-Ion Cells
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
What is the primary role of a slot die coating machine in lithium battery production?
The slot die coating machine is used to apply highly precise, thin, and uniform layers of active material slurries onto conductive foils (copper for the anode and aluminum for the cathode). This ensures that the electrodes meet precise thickness, weight, and density requirements for optimal battery performance.
What types of active materials can the slot die coater apply?
It is highly versatile and handles oily or aqueous formulations, including lithium iron phosphate, lithium cobaltate, ternary materials, lithium manganate, sodium-ion active materials, and graphite-based negative electrodes like lithium titanate.
What is the difference between the Desktop Type and the Integrated Type models?
While both models share similar technical specifications (such as dimensions, weight, power requirements, and coating precision), the Desktop Type (WS-YTSTBJ) is optimized for compact, laboratory-scale, or R&D environments, whereas the Integrated Type (WS-ZMSTBJ) is designed for streamlined pilot-scale production lines.
What are the precision and tolerance limits of the coating process?
The slot die coater offers exceptional precision with a single-sided areal density error of ≤±1.5um and a double-sided areal density error of ≤±2.5um, ensuring maximum uniformity of the electrode coatings.
What are the heating capabilities and temperature control limits of the drying oven?
The integrated drying oven operates from room temperature (RT) up to 150°C. It features a high-precision temperature control system that maintains temperature deviation within ≤ ±3 degrees Celsius to prevent defects during the drying phase.