18650 Cylindrical LFP Battery Automatic Winding Machine for Lithium Battery Production Line
PRODUCT PARAMETERS
Description
18650 Cylindrical LFP Battery Automatic Winding Machine | 3-Needle Design | ≥10PPM | CE Certified
Product Overview
Our 18650 Cylindrical LFP Battery Automatic Winding Machine is a high-speed, precision-engineered solution specifically designed for winding cylindrical lithium-ion battery cells, with particular optimization for LFP (Lithium Iron Phosphate) chemistry. As one of the key pieces of equipment in battery production, this machine features a three-winding needle and three-station winding design that enables coordinated operation, fast winding speeds, and extremely low failure rates.
Furthermore, we integrated a servo system with closed-loop tension control for the positive electrode, negative electrode, and separator. This ensures consistent tension coil-by-coil throughout the winding process, effectively preventing deformation of the battery core during downstream processes – a critical factor for high-quality 18650 cells.
With a precision of ±0.3mm and production efficiency of ≥10PPM, this CE-certified winding machine is ideal for manufacturers producing 18650 cylindrical LFP batteries for electric vehicles, energy storage systems, and other demanding applications.
Additionally, the PLC interface is designed to be humanized and scientific, with clear fault location display for easy troubleshooting and minimal downtime.
Key Design Highlights
1. Three-Needle, Three-Station Winding Mechanism
We engineered the machine with a three-winding needle configuration that operates across three stations simultaneously. This coordinated movement ensures continuous, high-speed production with minimal idle time – specifically optimized for 18650 cell geometry. As a result, you can achieve ≥10PPM efficiency without sacrificing quality.
2. Advanced Servo Closed-Loop Tension Control
To maintain winding consistency, we implemented servo motors with real-time closed-loop control for all three materials: cathode, anode, and separator. This technology provides turn-by-turn tension regulation, which prevents the “telescoping” effect that often ruins cylindrical cells. Consequently, your production achieves a ≥98% yield rate with minimal material waste.
3. User-Friendly PLC Interface with Fault Display
We designed the PLC interface to be intuitive and scientifically organized. Operators can easily set parameters and monitor production. Moreover, if a fault occurs, the system immediately displays the exact location on the HMI, drastically reducing troubleshooting time and maximizing uptime.
Technical Specifications at a Glance
| Parameter | Value | Remarks |
|---|---|---|
| Winding Precision | ±0.3mm | Ensures consistent electrode alignment |
| Production Efficiency | ≥10PPM | Pieces per minute – high-speed output |
| Suitable Cell Size | T: 2-10mm, W: 40-100mm, H: 40-160mm | Compatible with 18650 and similar formats |
| Electrode Length | 800-2500mm | Accommodates various capacities |
| Winding Needles | Three | Three-needle, three-station design |
| Operation Ratio | ≥95% | High reliability and uptime |
| Yield Rate | ≥98% | Excellent finished product quality |
| Air Source | 0.5 Mpa | Standard industrial compressed air |
| Machine Dimensions | 2500×1700×1350 mm | Compact footprint for production lines |
| Power Supply | 380V 50Hz | 3-phase industrial power |
| Certification | CE | Certified for European markets |
How the Winding Process Works
Step 1: Material Loading
First, you load the positive electrode, negative electrode, and separator materials onto the machine’s unwinding shafts. The system automatically handles tension adjustment at this stage.
Step 2: Simultaneous Three-Station Winding
Next, the three-winding needles begin their coordinated movement across three stations. This parallel operation ensures continuous winding without idle time, maximizing throughput for 18650 cell production.
Step 3: Closed-Loop Tension Regulation
Throughout the winding cycle, servo motors maintain precise tension on each material. This closed-loop control guarantees that tension remains consistent from the first turn to the last, preventing deformation and ensuring cell integrity.
Step 4: Automatic Ejection
Once the programmed number of windings is complete, the finished jelly roll is automatically ejected and transferred to the next process – such as housing insertion or electrolyte filling.
Step 5: Fault Monitoring and Diagnostics
Finally, the PLC system continuously monitors machine status. If an issue arises, it displays the exact fault location on the HMI, enabling quick resolution and minimal downtime.
Why Choose This Machine for 18650 LFP Production?
- Optimized for LFP Chemistry: While versatile enough for other cylindrical formats, we specifically designed this machine to meet the unique requirements of 18650 LFP battery production.
- Proven Performance: With ≥10PPM efficiency and ≥98% yield rate, you gain the productivity and quality needed to compete in the growing LFP market.
- Superior Tension Control: Our servo closed-loop system ensures coil-by-coil tension consistency – a critical factor in preventing core deformation for cylindrical cells.
- Engineered for Reliability: The three-needle coordinated design minimizes failure points, while the ≥95% operation ratio keeps your production lines running.
- User-Centric Design: The PLC interface with fault location display allows your team to operate and maintain the machine with minimal training.
- CE Certified: We fully certified this equipment for European markets, meeting stringent safety and quality standards.
- Customized Solutions: Because the model number is “Customized,” we can tailor the machine to your specific production requirements – we don’t just sell machines, we provide tailored solutions.
Frequently Asked Questions (FAQ)
Q: Is this machine specifically for 18650 LFP batteries?
A: Yes, we optimized this machine for 18650 cylindrical LFP batteries, though it can accommodate similar cylindrical formats within the specified size range (T:2-10mm, W:40-100mm, H:40-160mm).
Q: What is the production speed?
A: The machine achieves ≥10PPM (pieces per minute) production efficiency, depending on electrode length and cell configuration.
Q: How does the tension control work?
A: We use servo motors with closed-loop control for the positive electrode, negative electrode, and separator. This provides precise, turn-by-turn tension regulation throughout the entire winding process – critical for preventing telescoping in cylindrical cells.
Q: What electrode lengths can it handle?
A: The machine accommodates electrode lengths from 800mm to 2500mm, allowing flexibility for different cell capacities.
Q: What is the typical yield rate?
A: The machine achieves a ≥98% yield rate under normal operating conditions, thanks to its precision control and stable mechanical design.
Q: Is the machine CE certified?
A: Yes, this equipment is CE certified, meeting European safety and quality standards.
Q: Can you customize the machine for specific requirements?
A: Yes, the model number is “Customized” – we can tailor the machine to your specific production needs. Please contact us with your requirements.
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