Turnkey lithium-sulfur battery production line solutions by TOBGROUP. We deliver complete battery production lines tailored to clients specific requirements.
TOBGROUP focuses on the pain points of Lithium-Sulfur (Li-S) battery industrialization, introducing a globally leading mass lithium-sulfur battery production line solution for high-energy-density Li-S batteries. Addressing core challenges such as poor conductivity of the sulfur cathode, polysulfide shuttle effect, and lithium anode dendrites, we integrate material innovation, process innovation, and intelligent equipment manufacturing. We provide a full-process turnkey project from electrode preparation to cell assembly, empowering customers to achieve large-scale production of ultra-high energy density batteries exceeding 500 Wh/kg.
● Production Scale: 10,000 - 100,000 cells/day (Supports phased capacity expansion to match market demand ramp-up)
● Core Breakthroughs:
(1) Sulfur Cathode Process: Continuous synthesis of nano carbon-sulfur composites, multi-level pore electrode coating, in-situ polymerization coating technology.
(2) Lithium Anode Protection: In-situ construction of Solid Electrolyte Interphase (SEI), continuous deposition of 3D lithium metal.
(3) Shuttle Inhibition: High-speed integration of multi-functional composite separators, precise metering and injection of electrolyte additives.
● System Compatibility: Liquid/Quasi-solid-state Li-S systems, flexible cells, high-power type, low-temperature type, etc.
● Full Process Coverage:
Sulfur-based cathode synthesis → Highly conductive slurry preparation → Ultra-thick electrode coating → Multi-functional separator coating → Lithium anode continuous treatment → High-speed stacking → Inert atmosphere encapsulation → Low-oxygen electrolyte filling → Gradient activation formation → Intelligent sorting → Big data traceability.
TOBGROUP Lithium-sulfur Battery Production Line Standard Configuration with Full Customization Support
|
Parameter Item |
Standard Specification / Range |
Customization Range Description |
|
Standard Capacity |
50,000 cells/day |
10,000 - 100,000 cells/day |
|
Single Cell Energy Density |
≥ 400 Wh/kg |
Customizable 500 Wh/kg+ high-energy models |
|
Electrode Coating Width |
600 mm |
300 - 1200 mm |
|
Sulfur Cathode Areal Loading |
20 - 40 mg/cm² |
Supports up to 60 mg/cm² |
|
Environmental Control |
Full-chain Dew Point ≤ -60°C, O₂ ≤ 0.1ppm |
Local areas upgradable to O₂ ≤ 0.01 ppm |
|
MES Data Collection Points |
500+ |
Supports real-time EIS analysis |
|
Typical Energy Consumption |
≤ 2.5 kWh/kg electrode |
Can be reduced to 1.8 kWh/kg with IR drying opt. |
|
Delivery Cycle |
32 - 48 weeks |
Can be shortened to 26 weeks with modular delivery |
● Disruptive Process Equipment Integration
(1) Continuous Sulfur Cathode Synthesis System: Integrated sealed reactor + spray drying enables kilogram-level continuous preparation of nano S/C composite materials.
(2) High-Speed Anti-Shuttle Separator Coater: Online double-sided microporous coating (MOF/Conductive polymer), coating speed ≥20 m/min.
(3) Lithium Metal Anode Deposition Equipment: Integrated roll-to-roll Physical Vapor Deposition (PVD) + calendering, thickness accuracy ±2μm.
(4) Ultra-Low Moisture & Oxygen Assembly Environment: Full-chain dew point ≤ -60°C, oxygen content ≤ 0.1 ppm (Exceeds industry standard by 10 times).
● Multi-Level Closed-Loop Data Control
(1) AI Process Brain: Real-time analysis of 50+ parameters (electrolyte consumption, interface impedance, shuttle current, etc.) to dynamically adjust filling/formation strategies.
(2) Millisecond-Level Defect Interception: Online inspection of sulfur distribution uniformity and lithium layer defects using machine vision + laser spectroscopy.
● Dual Optimization of Cost & Efficiency
(1) 30% Improvement in Sulfur Utilization: Reduces conductive agent usage through gradient pore electrode design.
(2) 40% Reduction in Energy Consumption: Infrared rapid drying replaces traditional ovens, formation cycle shortened by 50%.
● System Diagnosis & Planning
(1) In-depth analysis of customer targets (energy density, cycle life, cost threshold, lithium-sulfur battery production line scale).
(2) Provide technical roadmap for sulfur source selection, electrolyte formulation, and cell format (pouch/prismatic/etc.).
● Customized Lithium-Sulfur Battery Production Line Design
(1) Design "U-shaped" or "Linear" layout based on capacity requirements, optimizing inert gas flow field.
(2) Selection of special anti-corrosion/solvent-resistant materials (to address polysulfide corrosion).
● Lithium-Sulfur Battery Production Line Core Equipment Cluster Supply
(1) Continuous Sulfur Composite Synthesis System
(2) Anti-Settling High Solid Content Slurry Dispersion Equipment (Solid content ≥ 70%)
(3) Ultra-Thick Electrode Double-Sided Precision Coater (Coating thickness 200-500μm)
(4) Roll-to-Roll Lithium Metal Vapor Deposition Equipment
(5) Fully Sealed High-Speed Stacking Machine (Stacking accuracy ±0.1mm)
(6) Multi-Stage Vacuum Filling System (Filling accuracy ±0.1g)
(7) Multi-Step Formation Rack (Supports in-situ SEI formation programs)
(8) Polysulfide Leakage Monitoring System
● Zero-Gap Delivery Assurance
(1) TOBGROUP engineers provide lithium-sulfur battery production line on-site commissioning support, completing trial production validation of 100,000+ cells.
(2) Provision of the "Li-S Mass Production Process White Paper" and customized Standard Operating Procedures (SOPs).
Core enablers of technological implementation
Actionable insights from planning to execution
● Obstacle: Rapid capacity decay and low cycle life due to polysulfide dissolution.
● TOB Solution:
(1) Cathode: "Core-shell structured sulfur-carbon composite + conductive polymer coating".
(2) Separator: Online coated MOF/carbon nitride multi-functional layer.
(3) Electrolyte: Add in-situ film-forming agents (e.g., LiNO₃) to construct a dual-effect interface layer.
● Equipment: Roll-to-roll PVD enables ultra-thin, dense lithium layers (≤ 50μm).
● Process: Integrated calendering process eliminates dendrite growth hotspots.
● Monitoring: Real-time anomaly interception via laser thickness gauges + AI defect detection.
What are the special factory environment requirements for the production line?
● Dry Room: Electrode workshop dew point ≤ -60°C (Standard lithium-ion only requires -40°C).
● Cleanliness: Assembly area ISO Class 5 (Class 100).
● Inert Gas: Nitrogen purity ≥ 99.9995% in filling/encapsulation areas.
● Corrosion Resistance: Equipment contact parts require Hastelloy/PTFE coating.
Four-fold guarantee:
● Raw Material: Sulfur purity ≥ 99.999% (TOB supplied).
● Process: 100% online areal loading/XRD composition inspection.
● Encapsulation: Multi-chamber vacuum encapsulation (residual oxygen ≤ 50 ppm).
● Formation: Adaptive SEI formation algorithm reduces lithium plating.
Supports quasi-solid/all-solid-state routes:
● Cathode: Sulfide solid electrolyte composite electrode.
● Anode: Lithium alloy/pre-lithiated silicon-carbon.
● Integration: Continuous lamination equipment for hot-pressed solid electrolyte membranes.
TOBGROUP offers one-stop supply:
● Cathode: Sulfur-carbon composite (Loading 70-85%).
● Anode: Pre-lithiated composite foil / thin lithium strip.
● Separator: Ceramic/PVDF composite separator.
● Electrolyte: Custom formulations containing polysulfide inhibitors.
TOBGROUP delivered a 3000F 60138 supercapacitor pilot line with full equipment, materials, and on-site commissioning support.
TOBGROUP designed a Na-ion battery lab line producing 18650S, 32138S, 32140S cells for advanced research and development.
TOBGROUP delivered a full-cycle 5MWh pouch cell production line for Li-ion and Na-ion, enabling European energy storage production.
