Advanced Manufacturing Process
for Drone Battery Excellence
Discover our comprehensive 13-step manufacturing process that ensures the highest quality and reliability for every drone battery we produce. From incoming inspection to final packaging.
Phase 1: Cell Pre-processing & Sorting
Incoming Inspection
Comprehensive quality control begins with meticulous incoming cell inspection under controlled environmental conditions.
- Controlled Environment: Temperature 23±5°C, humidity ≤60%RH
- Data Verification: Barcode/RFID scanning for batch traceability
- Visual Inspection: Terminal damage, corrosion, scratches detection
- Electrical Testing: OCV (3.6-3.9V) and DCIR (≤20mΩ) measurement
Capacity Grading & Sorting
Automated capacity testing and precise cell matching to ensure optimal battery pack performance and longevity.
- Charging Protocol: CC-CV charging to 4.2V using automated chambers
- Capacity Calculation: Precise discharge capacity measurement in Ah/mAh
- Cell Matching: ≤50mAh capacity, ≤2mΩ resistance, ≤10mV voltage difference
- Quality Screening: Abnormal discharge curve cells removal
Cell Insulating
Application of high-grade insulation materials to prevent short circuits and ensure electrical safety throughout the battery pack.
- Premium Materials: PET, PC, or mica insulation sheets with high dielectric strength
- Fire Resistance: UL94 V-0 grade flame retardant properties
- Precision Application: Complete cell body coverage (excluding terminals)
Cell Matching & Grouping
Strategic cell pairing based on comprehensive testing data to maximize battery pack consistency and eliminate the "barrel effect".
- Consistency Matching: Cells grouped within identical voltage, resistance, and capacity ranges
- Performance Optimization: Eliminates weak cell impact on overall pack performance
- Extended Lifespan: Balanced charging/discharging prevents premature aging
Phase 2: Battery Module Assembly
Spot Welding of Tabs
Precision pulse spot welding of nickel tabs using advanced equipment with real-time quality monitoring and control.
- Advanced Equipment: Precision pulse spot welders with DOE-optimized parameters
- Premium Materials: Pure nickel or nickel-plated steel tabs for optimal conductivity
- Quality Assurance: Tear testing, visual inspection, and real-time monitoring
Module Assembly Welding
Professional assembly welding to create battery modules according to electrical design specifications with laser precision.
- Flexible Configurations: Series/parallel arrangements (3S1P, 4S2P, etc.) per design requirements
- Laser Welding: High-energy concentration with minimal deformation and maximum reliability
- Precision Fixtures: Accurate positioning control ensuring stress-free, stable structure
Phase 3: Module Processing & Initial Testing
Module OCV/IR Test
Comprehensive electrical testing of assembled modules to verify voltage, resistance, and connection integrity.
- Voltage Verification: Total voltage measurement and theoretical calculation validation
- Resistance Analysis: Overall internal resistance within theoretical range
- Connection Integrity: Detection of poor welding, reverse polarity, or defective cells
Heat Shrink Tubing or Casing
Professional encapsulation using premium materials to provide insulation, moisture protection, and structural integrity.
- Premium Materials: PVC or PET heat shrink films, or pre-fabricated plastic/metal casings
- Controlled Process: Heat gun or shrink oven with precise temperature control
- Multi-Protection: Insulation, moisture resistance, and structural fixation
Aging Test
Controlled aging process in temperature-controlled chambers to activate chemistry and identify potential defects early.
- Chemistry Activation: Stabilizes cell performance and activates chemical processes
- Defect Screening: 1-3 complete charge/discharge cycles at 0.5C rate
- Quality Criteria: Modules with >10mV voltage drop in 24 hours are rejected
Module Re-inspection
Comprehensive post-aging inspection to ensure only qualified modules proceed to the next manufacturing stage.
- Electrical Verification: Complete voltage and internal resistance re-testing
- Physical Inspection: Check for swelling, film damage, or dimensional changes
- Quality Gate: Only qualified modules advance to BMS integration stage
Phase 4: BMS Integration & Final Testing
BMS Integration
Professional integration of Battery Management System with precision connections and comprehensive safety features.
- Precision Welding: Low-temperature Sn-Bi solder for voltage and temperature sampling lines
- Main Circuit Connection: Reliable P+/P- main circuit connection with battery pack terminals
- Safety & Fixation: Insulation sheets and secure mounting to prevent vibration damage
- Function Verification: Immediate testing of voltage/temperature data reading capability
Final Product Testing
Comprehensive final testing including capacity verification, BMS protection functions, and safety compliance validation.
- Capacity & Efficiency: Full charge/discharge testing under real working conditions
- BMS Protection Testing: OVP, UVP, OCP, SCP, and temperature protection verification
- Safety Compliance: Insulation resistance testing at 500V DC with >1MΩ requirement
Labeling, Packing & Warehousing
Professional packaging and warehousing with complete traceability, safety labeling, and optimal storage conditions.
- Complete Labeling: Model, capacity, voltage, production date, batch number, and safety certifications (CE, UL)
- Protective Packaging: Anti-static, shock-proof materials with insulated terminal caps
- Optimal Storage: Cool, dry conditions at 50% SOC with regular voltage monitoring
What You Can Benefit From Our
Manufacturing Process
Our comprehensive battery pack production process delivers exceptional value through every stage, ensuring safety, reliability, and superior performance for your applications.
Stage 1: Cell Pre-processing & Selection
Building the foundation for long-lasting, safe, and high-performance battery packs
Cell Incoming Inspection
Our Process:
Barcode traceability, comprehensive appearance inspection, and electrical performance testing in controlled environments to ensure quality at the first checkpoint.
Your Benefits:
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Safety & Reliability: Eliminate defective cells from entering production, removing safety risks from the source.
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Quality Consistency: Ensure every batch meets standards, establishing a solid foundation for consistent performance.
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Full Traceability: Any issues can be traced back to cell batches for quality tracking and responsibility determination.
Cell Grading & Matching
Our Process:
Automated capacity testing with precision grading based on capacity, internal resistance, and voltage for optimal cell matching.
Your Benefits:
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Extended Lifespan: Significantly reduce performance degradation caused by cell inconsistencies, effectively improving overall cycle life.
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Higher Usable Capacity: Avoid "barrel effect" limitations, fully utilize each cell's capacity for longer runtime.
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Superior Discharge Performance: Consistent internal resistance ensures stable voltage during high-current discharge.
Stage 2: Battery Module Assembly
Precision craftsmanship ensuring structural integrity and electrical safety
Insulation Paper Application
Our Process:
High-quality flame-retardant insulation materials precisely applied to achieve comprehensive insulation protection.
Your Benefits:
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Maximum Safety: Fundamentally prevent internal short circuit risks, ensuring safety even under severe vibration.
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Enhanced Environmental Adaptability: Additional moisture and dust protection for improved reliability in complex environments.
Welding & Assembly
Our Process:
Precision pulse welding or laser welding with online monitoring and regular tensile testing to ensure welding strength.
Your Benefits:
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Ultra-Low Connection Resistance: Reduce energy loss, improve efficiency, and prevent connection point overheating.
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Superior Structural Stability: Robust welding points withstand long-term vibration and impact for reliable connections.
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Excellent Overcurrent Capability: Reliable welding ensures no arcing or melting during high current flow.
Stage 3: Module Processing & Initial Testing
Proactive screening for stable quality assurance
Battery Pack Aging Test
Our Process:
Charge-discharge cycling and static aging in constant temperature environments to proactively screen potential defects.
Your Benefits:
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Stable from Day One: Eliminate early failure products for stable performance upon delivery.
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Ultra-Low Factory Defect Rate: Significantly reduce failure risks during use and minimize after-sales costs.
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Quality Confidence: We complete the "early break-in" process, delivering ready-to-use products with confidence.
Stage 4: BMS Integration & Final Testing
Intelligent protection for complete peace of mind
BMS Assembly
Our Process:
Premium BMS selection with precision sampling wire welding and insulation fixing for accurate battery management.
Your Benefits:
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Comprehensive Intelligent Protection: Overcharge, overdischarge, overcurrent, short circuit, and temperature protection.
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Extended Battery Life: Balancing function maintains cell consistency for longer overall lifespan.
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Visible & Controllable Status: Reliable data interface for easy system integration and real-time monitoring.
Final Product Testing
Our Process:
Real scenario simulation with comprehensive performance and protection function testing, including insulation voltage testing for every finished battery.
Your Benefits:
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100% Functional Guarantee: Every battery meets design specifications with verified performance and protection functions.
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Absolute Safety Certification: Insulation voltage testing meets safety standards for user and equipment protection.
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Ready to Use, Worry-Free: Strictly verified products ready for immediate production or use.
Final Step: Labeling & Packaging
Our Process:
Clear labeling of all key parameters with anti-shock, anti-static packaging and storage under optimal conditions.
Your Benefits:
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Clear Information, Easy Management: Complete labeling for inventory management, device pairing, and after-sales service.
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Safe Transportation: Professional packaging ensures products arrive in perfect condition.
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Optimized Storage State: Half-charge storage maintains battery health for like-new performance after storage.
Complete Power Solution
Through meticulous control and technical investment in every process stage, we deliver more than just a "battery pack" - we provide a complete power solution that is safe, reliable, durable, high-performance, and worry-free. This helps you enhance your end product's market competitiveness, reduce after-sales maintenance costs, and earn the trust of your end users.
Ready to Start Your Custom Battery Project?
Contact our engineering team to discuss your specific requirements and get a customized solution for your drone battery needs.
info@vibms.com
+86-15798483339
Factory
ShenZhen, China