Lithium Battery Calendering Machine
The lithium battery calendering machine is a high-precision heating roller press system designed for lithium-ion battery electrode manufacturing. It continuously compresses coated electrode sheets through controlled roller pressure to increase electrode density, improve thickness consistency, and enhance battery performance.
The machine is suitable for both anode and cathode materials, including graphite, silicon-carbon, lithium iron phosphate (LFP), nickel manganese cobalt (NMC), and lithium cobalt oxide (LCO). Equipped with Φ400×450mm hardened chrome-plated rollers, hydraulic pressure control, automatic tension regulation, and heating roller system, it provides stable calendering performance for battery production lines.
Key features
45# steel frame
With wedge-type gap adjustment (0.001mm precision) and hydraulic pressurization (50MPa).
Automatic edge trimming
(300–420mm width) and roller wiping system to prevent graphite adhesion (for anodes).
Mitsubishi PLC
And touchscreen HMI for digital control of speed, pressure, and roll gap.
3-inch inflatable shafts
Support max 300kg coils (φ500mm) with ≤±0.4mm winding alignment.
Ideal for EV battery manufacturing, this 5T machine (4.66×2.68×1.8m) meets 99% pass rates. Popular search terms: electrode calendering machine, battery roller press, lithium battery equipment, high-precision roller mill, and hot rolling machine. Perfect for R&D and mass production of ultra-thin electrodes.
Equipment Overview:
Main Functions
● HF-ZJ is designed for continuous calendering of lithium-ion battery electrode sheets. It compresses coated electrode materials to achieve the required electrode density and thickness, and the processed electrode rolls are collected through the rewinding system.
● The machine adopts a 45# steel frame structure with a large slider design, providing high load capacity, excellent rigidity, low deformation, and stable performance under high rolling force and speed conditions.
● The equipment is equipped with electrode edge trimming and roller surface cleaning mechanisms to maintain stable production quality. It also features automatic edge alignment, tension-controlled rewinding, and an electrode sheet buffer system for continuous and stable electrode processing.
● The pneumatic pressurization system controls roller movement through the HMI interface. The constant-pressure control system automatically adjusts hydraulic pressure, while operators can set roller gap parameters directly through the HMI.
Display reference map
Equipment process flow
Unwinding → feeding platform → correction system → tension control system → edge cutting device → buffer device → heating device → roller press → roller erasing device (negative electrode only) → buffer device → tension control system → correction system → feeding platform → winding
Applicable Electrode Material Specifications
|
No |
Item |
Technical parameter |
|
1. |
Applicable material system |
Cathode: lithium iron phosphate, lithium cobalt, lithium manganate and ternary materials Anode: graphite, silicon carbon, etc |
|
2. |
Incoming material coating method |
Transverse intermittent, continuous multiple zebra coating, continuous coating, etc |
|
3. |
Incoming specification |
1) Substrate thickness: aluminum foil 10 ~ 35μm, copper foil 6 ~ 25μm 2) Pole thickness: 100-300μm 3) Material coil diameter: Max.φ500mm 4) Roll weight: Max.300kg 5) Pole thickness error: ≤±2μm Barrel specification: Inner diameter 3 inches, length ≤650mm |
|
4. |
Output product specification |
1) Thickness error of electrode plate after pressure: ≤±2μm (remove abnormal areas of head and tail and edge) 2) Material coil diameter: Max.φ500mm 3) Roll weight: Max.300kg 4)Winding edge deviation: ≤±0.4mm |
Equipment technical index
|
No |
Item |
Technical parameter |
|
1. |
Roll size |
Φ400mm×450mm (roll surface diameter × roll surface width) Effective roll width 420mm |
|
2. |
Line placement dimension |
Approx. Length 4660mm× width 2680mm× height 1800mm (excluding roll removal reserve) |
|
3. |
Size of roller press |
Approx. Length 2680mm x width 780mm x height 1800mm |
|
4. |
Device color |
Supplier standard color or specified color. |
|
5. |
Weight of a single device |
The total weight of the production line: about 5T, the weight of the roller press is about 4T |
|
6. |
Load-bearing requirement |
The roller part requires the ground load to be ≥3t/㎡, and the backing plate is placed at the bottom of the equipment |
|
7. |
Air pressure |
0.5Mpa ~ 0.7Mpa (oil and water removal), flow rate :0.04M3/min |
|
8. |
Environmental requirement |
Temperature range 0 to +45 ° C Relative humidity: ≤50% |
|
9. |
Power requirements |
380V, 50Hz three-phase five-wire system |
|
10. |
Whole line power |
Power 10KW |
|
11. |
Rolling production speed |
Max.12m/min |
|
12. |
Pressure between two rolls |
Max.200T |
|
13. |
Pass rate |
≥99% (excluding bad incoming materials, power supply, gas supply and other influencing factors) |
|
14. |
Equipment failure rate |
≤1% (Only faults caused by equipment are calculated) |
Main Technical Parameters of Lithium Battery Calendering Machine
The lithium battery calendering machine integrates precision roller pressing, hydraulic pressure control, electrode tension management and automatic rewinding systems for continuous lithium-ion battery electrode processing.
| Item | Specification |
|---|---|
| Overall Dimensions (L×W×H) | Approximately 2800mm × 800mm × 1500mm |
| Machine Weight | Approximately 4.5 tons |
| Roller Specification (Diameter × Width) | Ø400 × 450mm |
| Effective Working Width | 400mm |
| Roller Speed | 2–12 rpm, stepless adjustable |
| Roller Material | 9Cr3Mo (inspection report provided) |
| Roller Surface Hardness | HRC 66–68 |
| Tempering Hardness | HB280–300 |
| Quenching Depth | ≥18mm |
| Roller Radial Runout | ≤±0.001mm (tested on cylindrical grinder) |
| Total No-load Radial Runout | ≤±0.002mm (tested on cylindrical grinder) |
| Roller Surface Roughness | Ra≤0.04 |
| Chrome Plating Thickness | ≥0.18mm |
| Roller Cleaning System | Adjustable blade scraper system with collection box (one set per roller) |
| Drive Method | Universal joint transmission |
| Drive Motor Location | Left side of the feed end |
| Main Motor Power | 11kW (2×5.5kW, 380V, 50Hz) |
| Hydraulic Cylinder Specification | Ø200mm bore, 10mm stroke |
| Maximum Rolling Force | 3400kN |
| Line Pressure | 0.45–7.5t/cm |
| Roller Gap Adjustment Method | Central wedge block with hydraulic constant pressure |
| Roller Gap Adjustment Range | 0–2mm |
| Roller Bearings | P5-grade precision bearings with molybdenum disulfide grease |
| Heating Connection | Rotating joint at shaft end |
| Heating Method | Mold temperature controller |
| Heating Medium | Thermal oil (provided by user) |
| Heating Temperature Range | Room temperature–150°C, adjustable |
| Temperature Control | Digital display with over-temperature alarm |
| Roller Surface Temperature Uniformity | ±1°C within working width |
| Heating Rate | Room temperature to 80°C within ≤60 minutes |
| Temperature Stabilization Time | ≤100 minutes |
| Oil Heater Power | 24kW (2HP), separate 380V, 50Hz power supply |
| Oil Pump Motor Power | 1.5kW |
| Maximum Oil Flow Rate | 220L/min |
| Rewinding Shaft Type | Air shaft Ø76mm |
| Rewinding Shaft Effective Length | 400mm (with control valve and inflation gun) |
| Maximum Winding Diameter | Ø400mm |
| Maximum Rewinding Load Capacity | 400kg |
| Tension Controller | 0.5–50kg adjustable, Sulishun system |
| Edge Alignment System | Dongdeng control system |
| Edge Alignment Accuracy | ±0.2mm |
| Uncoiler Tension Control | Magnetic powder brake control |
| Rolling Mill Speed Control | Main motor with frequency converter |
| Rewinder Drive System | Motor-driven rewinder with magnetic powder clutch tension control |
| Hydraulic Pressure Control | Electric booster pump controlled through HMI touchscreen |
| Edge Alignment Control | Servo motor control |
| Roller Pressure Adjustment | HMI touchscreen control |
| Roller Displacement Display | Real-time HMI display |
| Roller Gap Input Adjustment | HMI parameter setting |
| Standard Color Scheme | Available according to standard configuration |
Machine Structure
The lithium battery calendering machine is composed of several integrated systems, including the unwinding unit, precision calendering roller system, hydraulic pressure control system, automatic edge alignment system, rewinding unit, and electrical control system. These systems work together to ensure stable electrode feeding, precise thickness control, and continuous electrode roll processing.
Main components include:
● Unwinding unit
● Calendering roller system
● Hydraulic pressure control system
● Edge alignment system
● Rewinding unit
● Electrical control system
Rewinder
The rewinder system winds the processed electrode sheet after calendering onto a core shaft under controlled tension. It consists of an air shaft, tension controller, magnetic powder clutch, edge alignment device, and guide rollers to ensure stable winding accuracy and consistent electrode roll quality.
Application Cases
The lithium battery calendering machine is widely used in lithium-ion battery manufacturing applications, including:
● Electric vehicle battery production
● Energy storage battery manufacturing
● Consumer electronics battery production
● Battery pilot line development
● Laboratory electrode research
It is suitable for manufacturers producing lithium-ion battery cells requiring improved electrode density, thickness consistency and coating quality.
Partner Company
Frequently Asked Questions
What is a lithium battery calendering machine used for?
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A lithium battery calendering machine is used to compress electrode sheets after coating to increase electrode density and improve thickness consistency during lithium-ion battery production.
Which battery materials can be processed by this machine?
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The machine can process common lithium-ion battery electrode materials including graphite anode, silicon-carbon anode, LFP cathode and NMC cathode materials.
What thickness control accuracy can the battery calendering machine achieve?
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The machine provides precise roller gap adjustment and stable pressure control to maintain consistent electrode thickness during production.
What is the maximum rewinding capacity?
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The rewinder supports a maximum winding diameter of Ø400mm and load capacity up to 400kg.