How to Improve the Reliability of Electric Aerial Work Platforms

I. Battery System: The Most Failure-Prone Core Component

• Use high-cycle lithium iron phosphate (LiFePO4) batteries and reject low-quality cells.
• Cycle life ≥ 2,000 cycles.
• Equip with independent BMS for cell balancing, overcharge, over-discharge, over-temperature, and short-circuit protection.
• Provide forced ventilation and thermal insulation for the battery compartment.
• Avoid exposure to high temperatures and freezing in low temperatures.
• Install a battery insulation cover for long-term outdoor parking.
• Perform regular balanced charging and avoid deep discharge.
• Maintain 50%–70% state of charge during long-term storage.
• Strictly prohibit discharging to 0% before charging, as this easily locks the battery.
• Install a battery heating system (essential for northern regions or cold-climate exports).
• Low temperatures cause severe capacity drop, charging protection, and failure to lift — common high-occurrence faults.

II. Motor and Drive System: Enhancing Travel and Lifting Reliability

• Adopt AC asynchronous or permanent magnet synchronous drive motors.
• More durable and maintenance-free compared to brushed DC motors.
• Upgrade motor waterproof rating to ≥ IP65.
• Muddy construction sites and rainy operation are major causes of motor burnout.
• Change reducer oil regularly with low-temperature long-life gear oil.
• Mandatory oil change every 1,000 hours.
• Equip the braking system with wear detection and over-temperature protection.
• Brakes suffer heavy wear during downhill travel and frequent start-stop operations.

III. Hydraulic System: The Highest Fault Rate Part of Electric Articulating/Telescopic Boom Lifts

• Adopt imported or first-tier brand hydraulic components exclusively.
• Main valves: Rexroth, Parker, Hydac.
• Pumps and motors: Eaton, Danfoss.
• Implement strict hydraulic oil filtration and install return oil fine filters.
• Contamination is the main cause of valve spool sticking and jerky operation.
• Install oil temperature monitoring and high-temperature alarms.
• Automatic power reduction when oil temperature exceeds 80°C.
• Use fluororubber or nitrile oil-resistant seals for all sealing parts.
• Prevent high-temperature aging and low-temperature hardening that causes oil leakage.
• Purge air regularly and inspect hydraulic lock and counterbalance valves.
• Boom sinking and drifting mostly occur in these components.

IV. Electrical Control System: Determining Stability and Fault Rate

• Adopt mature vehicle-grade CAN bus controllers.
• Avoid low-cost microcontrollers with poor anti-interference performance.
• Use double-shielded wiring harnesses and waterproof connectors with rating ≥ IP67.
• Vibration and muddy water on construction sites easily cause loose connections and malfunctions.
• Adopt redundant design for key sensors.
• Dual-channel acquisition for inclination, length, and pressure sensors.
• Add fault self-diagnosis and historical record functions.
• Facilitate quick troubleshooting for after-sales service.
• Apply electromagnetic interference shielding.
• Prevent erratic remote control and uncontrolled operation.

V. Structure and Safety: The Fundamental Guarantee of Reliability

• Use high-strength steel for booms with welded seam inspection.
• Reduce deformation and cracking.
• Reinforce outriggers, slewing mechanisms, and leveling systems.
• Rough roads and uneven ground at construction sites pose extreme structural challenges.
• Mandatory standard configurations:
• Add grease passages to key hinge pins.
• Prevent dry friction, abnormal noise, and jamming.

VI. Operation and Maintenance: Directly Determining Service Life

• Pre-operation inspection every day:
• Weekly lubrication:
• Monthly inspection of wiring harness fixation and connector tightening.
• Vibration-induced loosening is the top cause of electrical faults.
• Perform battery balancing and BMS calibration quarterly.
• Strictly prohibit overloading, high-speed travel with load, and forced obstacle crossing.

VII.Additional Enhancements for Export / Overseas Working Conditions

For overseas exports (Middle East, Africa, Southeast Asia, Europe), three more reliability upgrades are required:

• High-temperature weatherability design (no power reduction at 55°C ambient temperature).
• Upgraded dustproof and waterproof performance (for dusty construction sites).
• Wide-voltage battery chargers (adapt to unstable local voltage supply).