Customer Background
A global leader in commercial refrigeration equipment manufacturing, specializing in high-end air conditioning systems. Products target the premium commercial market in North America, with stringent requirements for energy efficiency standards (e.g., SEER2) and extreme-environment reliability.
Pain Points
Multi-system Collaborative Development
Required synchronous development of three subsystems:
Main control board (system management)
Driver board (compressor/PFC control)
Wired controller (HMI)
to meet UL/ETL safety regulations and ENERGY STAR efficiency standards.
Extreme Environment Validation Challenge
Customer demanded rigorous testing:
-30℃ low-temperature cold start
55℃ full-load continuous operation
Traditional validation cycles took 12-18 months.
Supply Chain Volatility Risk:
Industry-wide chip supply fluctuations caused unstable lead times for critical components, disrupting production continuity.
Hunovate Solution
Technical Breakthroughs
✓ Tri-board System Optimization
Main Control Board: Dual-MCU redundancy (STM32F4 + Spintrol SPIN), industrial-grade operation (-40℃~85℃)
Driver Board: Proprietary sensorless FOC algorithm (40% starting torque boost) + 99.2% efficiency PFC module
Wired Controller: Custom Modbus-RTU protocol + conformal coating (moisture/salt/dust resistance)
✓ Composite Validation Strategy
Adopted lab-accelerated aging + phased field testing:
✅ Lab simulation:
-30℃/200 cold-start cycles (GB/T 2423.1)
55℃/1,000-hour high-temperature endurance
✅ Field sampling:
Chicago winter test (300 hours)
Arizona summer test (500 hours)
→ Total validation cycle compressed to 8 months (45% efficiency gain)
✓ Supply Chain Resilience
Critical power devices: Infineon/JieJie Micro/JuFengXin triple-source backup
Safety stock mechanism ensured delivery stability.
Cooperation Timeline
| Phase | Key Actions |
| 2023-Q1 | First driver board samples |
| 2023-Q3 | First small batch (300 units) |
| 2024-Q2 | Second small batch (800 units) |
| 2025-Q1 | 20,000-unit mass production |
| 2025-Q2 | Full order delivery completed |
Value Delivered
✅ Energy Efficiency & Cost Optimization
99.2% PFC efficiency → $96,000 annual energy savings (based on 4,000 units/year)
Localized high-end components reduced BOM cost by 15%
✅ Reliability Breakthrough
-30℃ cold start in 2.1 seconds (industry average ≥5s)
12,000-hour lifespan at 55℃ full load (customer standard: 8,000 hours)
✅ Delivery Assurance Upgrade
Critical material buffer stock ensured ≤45-day delivery
SMT line first-pass yield: 99.2% (supports 5,000 units/month peak capacity)
Project Impact
“Hunovate’s modular verification framework slashed our time-to-market. Their triple-source strategy guaranteed continuous production. During North America’s AC upgrade wave, this project helped us capture market share 3 months ahead of schedule.”
— Anonymous Supply Chain Director