6.6KW bidirectional on board charger（Air-cooled）
6.6kW Bidirectional On-Board Charger (Air-Cooled) | V2L & V2G Ready | IP67 Waterproof | 200V–850V DC Output Range
The next generation of energy management for high-performance electric vehicles. Our 6.6kW Bidirectional On-Board Charger (OBC) is a fully digital, air-cooled power electronics unit designed to bridge the gap between grid charging and mobile power discharge (Vehicle-to-Load). Engineered for 400V and 800V battery architectures, it features IP67 protection, ≥94% efficiency, and a robust CAN-BUS interface for seamless integration with modern BMS and VCU systems.
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Charging Power: 6.6kW (32A Max Input).
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Discharge Power (V2L): 3kVA (220VAC Output).
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Efficiency: ≥94% (Rated Voltage).
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Cooling: Advanced Forced Air-Cooling (Fan-cooled).
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Protection: IP67 Sealed Aluminum Enclosure.
Technical Excellence in Bidirectional Power
High-Efficiency Bidirectional Conversion
As electric vehicle ecosystems evolve, the ability to return energy to the grid or power external devices becomes a critical competitive advantage. This 6.6kW bidirectional OBC achieves a peak efficiency of ≥94% by utilizing high-frequency switching technology and a full digital software architecture. It supports a wide input range of 85-265VAC, making it compatible with global power grids while maintaining a power factor of ≥0.99.
Engineering Authority & Safety (E-E-A-T Focused)
Reliability in high-voltage environments is a result of redundant engineering and rigorous material selection. We prioritize Trustworthiness through:
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Vehicle-to-Load (V2L) Integration: Transform your EV into a mobile power station. The integrated inverter provides a stable 220VAC (±5%) output with ultra-low harmonic distortion (THDv <3%), safe for sensitive medical equipment, laptops, or power tools.
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Ruggedized for Extreme Environments: Rated at IP67, the unit is completely sealed against dust and water immersion. The vibration-resistant aluminum housing ensures stable operation in ambient temperatures from -40°C to +85°C.
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Intelligent CAN-BUS Communication: Total system synergy is achieved via CAN-BUS integration. The OBC maintains a real-time handshake with the BMS to execute precise charging curves while supporting online upgrades and remote fault diagnosis.
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Low-Voltage System Support: Designed for modern vehicle architectures, it supports auxiliary power inputs of 9-16VDC or 18-32VDC, with a static current of ≤1mA to prevent 12V battery drain during long-term storage.
Technical Specifications Table
| Category | Item | Specification |
| OBC (Charging) | Rated Power | 6.6kW (85-265VAC Input) |
| Output Voltage Options | 200-470VDC / 400-750VDC / 500-850VDC | |
| Max Efficiency | ≥94% | |
| Inverter (V2L) | Rated Power | 3kVA |
| Output Voltage | 220VAC ±5% (Single Phase) | |
| THDv (Linear Load) | <3% | |
| Environment | Operating Temp | -40°C to +85°C |
| Protection Level | IP67 | |
| Communication | Control Interface | CAN-BUS |
| Static Power | Quiescent Current | ≤1mA (Sleep/Shutdown) |
Frequently Asked Questions (FAQ)
Q: What are the advantages of an Air-Cooled system over Liquid-Cooled?
A: Our industrial air-cooling system eliminates the complexity of pumps, hoses, and coolant maintenance. It is an ideal choice for vehicles where weight and space are at a premium, offering high reliability and easier installation in engine bays or chassis compartments.
Q: Is this charger compatible with 800V battery systems?
A: Yes. We offer a high-voltage variant with an output range of 500V-850VDC, specifically engineered for the latest generation of ultra-fast charging 800V platforms.
Q: Can I use this charger for V2L (Vehicle-to-Load) applications?
A: Absolutely. This is a true bidirectional unit. It can provide up to 3kVA of high-quality AC power to external devices, making it perfect for camping, emergency backup, or mobile work sites.
Q: How does the IP67 rating protect my investment?
A: The IP67 rating ensures that the internal power electronics are fully protected against high-pressure water jets and dust. This significantly reduces the failure rate in vehicles operating in harsh, outdoor, or off-road conditions.
Q: Can the charging protocol be customized for my BMS?
A: Yes. The unit supports online upgrades via the CAN interface, allowing for custom CAN-BUS protocol mapping to ensure a perfect handshake with your specific vehicle control unit and battery parameters.