Crane Configuration Guide for Lithium Battery Plants
Key Points Four-stage crane solutions for the new-energy lithium battery industry: ① Electrode processing — cleanroom hoists from 0.5t to 3t, dew point below -40°C with corrosion protection; ② Cell assembly — Ex d IIB explosion-proof equipment for the electrolyte filling zone; ③ Formation & aging — jib cranes from 0.5t to 1t for battery fixture replacement; ④ Warehouse & storage — LD-type cranes from 1t to 3t for module handling. Kelude provides complete ultra-dry, explosion-proof, and cleanroom solutions across all scenarios.
Lithium battery manufacturing is one of the fastest-growing industries worldwide. From cathode and anode material preparation to cell winding and assembly, and from formation and aging to module and PACK integration, every stage relies on lifting equipment for material handling and equipment maintenance. Battery plants impose four critical requirements on overhead cranes: low-dew-point dry environments (moisture controlled to a dew point of ≤-45°C), anti-static protection (electrode materials are highly flammable), high cleanliness (Class 100 to 10,000), and metal-contamination prevention (electrode foils are extremely sensitive to metallic particles). This guide covers crane configurations for the four key stages of lithium battery production: electrode preparation, cell assembly, formation & aging, and PACK storage.
Lithium Battery Crane Applications at a Glance
Electrode Preparation Cranes for Low-Dew-Point Dry Rooms
The upstream processes of lithium battery production — cathode and anode mixing, coating, calendering, and slitting — are carried out in dry rooms with a dew point of ≤-45°C (moisture content <50ppm). Cranes operating in this environment must address three core challenges: sealing and waterproofing, condensation prevention, and static control.
- Structural sealing: Main girders are fabricated from SUS304 stainless steel with electropolished surfaces (Ra≤0.8μm). All mating surfaces use low-temperature silicone sealing strips rated for -60°C to +200°C.
- Lubricant-free operation: All sliding surfaces (wheel bearings, pulley blocks) use PFPE-based dry lubricants (Klüber 4UH1-460N or DuPont Krytox GPL 205), eliminating any risk of liquid lubricant dripping.
- Condensation prevention: Steel structure surface temperature is kept consistent with the ambient temperature. Localized temperature rise from electrical component heat dissipation is evenly distributed via forced air cooling to prevent cold-bridge condensation.
- Anti-static grounding: Crane rail earthing resistance is maintained below 1Ω. The lifting spreader and wire rope are continuously static-discharged, and contact strips are anti-static type.
- Recommended model: Cleanroom LD-type single-girder crane (1–5t), span 12–20m, servo positioning accuracy of ±1mm, travel speed 0.02–10m/min.
Cell Assembly Cranes with Precision Positioning and Explosion Protection
The cell assembly workshop — covering winding, stacking, canning, welding, and electrolyte filling — is the core of lithium battery manufacturing. Cranes in this area must simultaneously meet three requirements: explosion protection (the filling zone uses NMP solvent), high positioning accuracy (cell canning demands precise alignment), and a cleanroom-grade environment.
- Explosion protection class: The electrolyte filling zone requires Ex d e ib ⅡB T4 Gb explosion-proof cranes — NMP (N-methyl-2-pyrrolidone) is a flammable liquid with a flash point of 91°C and an explosive range of 1.3%–9.5%.
- Servo precision positioning: Transfer of electrode rolls into drying ovens requires positioning accuracy within ±5mm, achieved with servo motors and magnetic scale feedback (resolution ≤0.1mm).
- Metal-contamination prevention: All spreader components that contact electrode foils (fixtures, suction cups) are made of non-metallic materials (polyurethane/PE) to prevent metallic particle contamination.
- Recommended model: Cleanroom explosion-proof LD/LH-type crane (1–3t), span 10–18m, with servo drive and magnetic scale precision positioning.
Formation and Aging Cranes for Explosion-Proof Maintenance Work
During formation and aging, cells are in a charging/discharging state, creating a risk of electrolyte leakage and thermal runaway. The formation workshop is therefore classified as an explosion-proof zone. Cranes here primarily handle the installation, maintenance, and replacement of formation cabinets and aging chambers.
- Recommended model: Explosion-proof LD-type single-girder crane (1–3t), rated Ex d e ib ⅡB T4 Gb.
- Work duty: A4~A5 (primarily equipment maintenance rather than continuous production duty).
- Safety interlock: The crane is interlocked with the formation workshop's combustible gas detection system — when gas concentration exceeds the threshold, the system triggers automatic shutdown of the power supply and activates an audible and visual alarm.
- Reference price: Explosion-proof LD-type 3t/15m with Ex certification: approximately $15,000–$30,000.
PACK Module Cranes for Heavy-Load, High-Frequency Warehousing
PACK modules, PACK assemblies, and finished battery packs are heavy (modules 50–200kg, PACK assemblies 200–1000kg) and move through the warehouse at high frequency. Cranes in this area are integrated with the Warehouse Management System (WMS) for automated inbound and outbound handling.
- Recommended Model: LH-type electric hoist bridge crane (3–10t) or LD-type (3–5t), span 18–28m
- Work Duty: A5–A6 (frequent lifting in PACK warehouse)
- Control Mode: Floor-based radio remote control with WMS data terminal interface
- Safety Configuration: Overload limiter + electronic hook scale (weighing and barcode scanning during lifting) + anti-sway system
- Reference Price: LH-type 5t/20m: approx. $18,000–$30,000
Kelude Service Advantages for the Lithium Battery Industry
- Dry-Room Specialists: Kelude Heavy Industry dry-room cranes have been operating reliably in the dry rooms of leading lithium battery manufacturers (including CATL), with proven sealing and anti-condensation designs for environments with dew points ≤ -50°C.
- Complete Explosion-Proof Certification: Full certification documentation for Ex d e ib ⅡB T4 Gb explosion-proof cranes (Explosion Proof Certificate + explosion-proof motor certificate + explosion-proof electrical box certificate) is available for electrolyte filling workshops, meeting lithium battery industry safety audit requirements.
- Servo-Driven Precise Positioning: Kelude Heavy Industry's servo positioning system achieves a repeat positioning accuracy of ±0.5mm, meeting the accuracy requirements for automated transfer inside electrode roll ovens.
Lithium Battery Cranes
Six Core Data Cards for New Energy Lithium Battery Facilities: Key Lifting Equipment Parameters by Process
FAQ
Q: What cleanliness class is required for cranes in the lithium battery electrode production area?
A: The electrode production area (coating/calendering) is a Class 10K cleanroom zone. Kelude Heavy Industry's cleanroom hoists feature a 304 stainless steel body, fully sealed construction, and anti-static wheel assemblies, with surface particle emission <0.1μg/cm²/h, meeting lithium battery cleanroom requirements.
Q: Why do cranes in the electrolyte filling workshop need to be explosion-proof?
A: The electrolyte (LiPF6 solvent) used in the filling area is a flammable liquid, and flammable vapors can accumulate around filling machines. Kelude Heavy Industry equips filling areas with Ex d IIB T4 explosion-proof electric hoists featuring a 316L stainless steel body and Teflon coating for HF corrosion protection.
Q: What lifting equipment is needed for the lithium battery formation and grading workshop?
A: The core lifting tasks in a formation and grading workshop are battery fixture replacement and charge/discharge equipment maintenance. Kelude recommends a jib crane (0.5t–1t) with a 270° sway angle, where a single unit covers 3–5 formation and grading cabinets—a low-investment, flexible, and efficient solution.
Q: How do I choose a crane for the battery aging and storage area?
A: The aging area primarily involves moving and stacking battery modules. Kelude recommends an LD type single-girder crane (1t–3t) equipped with anti-static slings and clean-room coating, with anti-corrosion treatment applied to the crane rail. Kelude can also provide a unified-brand solution covering all lithium battery production processes.
