Insights into the Superior Performance of Shenzhen Kehua's 40kW SiC Charging Module
In the electric vehicle charging infrastructure industry, the reliability, efficiency, stability, and durability of charging modules are the key factors determining the performance and application value of EV chargers. Shenzhen Kehua's 40kW silicon carbide charging module stands out in the market with its exceptional technical specifications and wide-ranging application scenarios. This article will explore the unique advantages and vast potential of this module from multiple perspectives.
1. Reliability
MTBF and MTTR The Kehua 40kW silicon carbide charging module excels in terms of Mean Time Between Failures (MTBF), reaching an impressive 500,000 hours (under 25°C conditions). The module supports hot-swappable replacement, and its module address can be automatically set up without manual configuration. With a Mean Time to Repair (MTTR) of just 3 minutes, it significantly enhances the maintenance efficiency of charging systems.
Multiple Protection Mechanisms The module is equipped with multiple protection features, including:
- Three-phase input voltage imbalance protection
- Input over/under-voltage protection
- Over-temperature protection
- Output current limiting protection
- Short-circuit protection
- In-position detection protection
These protection mechanisms ensure safe and stable operation in various working environments and comply with the latest IEC 61851-23:2023 and UL2202 standards, further enhancing the safety and reliability of the module.
Environmental Adaptability The module uses potting technology to fully seal internal circuits and components, isolating them from external moisture, vapor, dust, chemicals, or salt spray, preventing short circuits or failure. This makes it especially suitable for corrosive environments such as coastal or industrial areas, significantly extending the module's lifespan.
2. Efficiency
Conversion Efficiency and Power Factor The module employs advanced silicon carbide components and high-efficiency magnetic materials, achieving a peak efficiency of 97%, with full-load efficiency of no less than 96%. Combined with active power factor correction technology, the power factor (PF) exceeds 0.99, and the Total Harmonic Distortion (THDI) is less than 5%, ensuring high energy utilization while minimizing interference with the power grid.
Low Standby Power Consumption Kehua's module has a standby power consumption of only 7.5W, significantly lower than the industry standard of 15W, saving 43.8kWh of energy annually, demonstrating its excellent energy-saving performance.
3. Stability Output Voltage and Ripple Control The effective value ripple coefficient of the module's output voltage is within ±0.5%, and the peak ripple coefficient of the output voltage does not exceed ±1%. The ripple performance of the output current is equally excellent; even when eight modules are used in parallel, the ripple of the output current Ipp is only 2.4A, which is far below the ICE standard limit of 9A, greatly improving the stability of current output.
Temperature Drift The module's operating temperature range is from -40℃ to 75℃, with a temperature drift of less than ±0.02%, ensuring stable operation even in extreme environmental temperatures, further enhancing the reliability of the equipment's performance.
4. Durability
Heat Dissipation Management The module features an intelligent 4-dimensional fan design, which adjusts fan speed dynamically based on parameters such as inlet temperature, input and output voltage, and current, ensuring optimal cooling and noise control. Additionally, its multi-point temperature detection system effectively prevents overheating, ensuring long-term stable operation.
Component Quality The module's key semiconductor components are sourced from well-known domestic and international brands, featuring high-voltage resistance and low conduction voltage drop. These characteristics allow the module to handle higher voltage and current, improving overall performance and extending its lifespan.
5. Cost-Effectiveness
The Kehua 40kW charging module complies with UL and CE international standards in one module, significantly reducing customers' capital investment in product selection and inventory. Its high efficiency and low power consumption offer excellent energy-saving performance, enabling faster return on investment and enhancing overall economic benefits.
6. Compatibility and Expandability
Wide Output Voltage Range With an output voltage range covering 150V to 1000V, the module is highly compatible with a variety of vehicles, including passenger cars, heavy-duty trucks, and buses.
Modular Expansion Capability A single system can parallel up to 60 modules, easily expanding to megawatt-level systems. It also supports remote upgrades, greatly improving the system's flexibility and scalability.
Electromagnetic Compatibility The module meets EMC Class B standards, ensuring extremely low electromagnetic pollution. This helps EV charger quickly pass EMC certification, reducing development and certification time, and accelerating product time-to-market.
Shenzhen Kehua's 40kW silicon carbide charging module, with its outstanding reliability, efficiency, stability, and cost-effectiveness, has become a leading product in the charging station market. The module boasts wide compatibility and strong expandability, making it ideal for diverse application scenarios such as large commercial charging stations, fleet charging, and highway charging stations. In the future, Kehua will continue to innovate in the field of electric vehicle charging technology, providing high-quality products and services to support the development of charging infrastructure and contribute to a sustainable green future.
