11kw on board charger
The intelligent heart of AC-to-DC power conversion. Our 11kW On-Board Charger (OBC) is a high-density, automotive-grade power electronics unit designed for electric passenger vehicles, commercial vans, and high-performance electric motorcycles. Featuring advanced Silicon Carbide (SiC) MOSFET technology, it achieves a peak efficiency of 96%, reducing thermal stress and extending vehicle range. Fully compatible with global 3-phase power grids and managed via CAN 2.0B for seamless integration with any Battery Management System (BMS).
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Rated Power: 11kW (Optimized for 3-Phase 400V AC)
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Voltage Range: 200V – 500V (400V System) / 450V – 850V (800V System)
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Peak Efficiency: ≥ 96%
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Control Interface: CAN 2.0B / ISO 11898
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Environmental Protection: IP67 Sealed Aluminum Enclosure
Engineering Authority for the Future of Mobility
High-Density SiC Power Electronics
In the competitive EV landscape, efficiency is the ultimate metric. Our 11kW OBC utilizes Silicon Carbide (SiC) MOSFETs instead of traditional Silicon IGBTs. This high-frequency switching technology drastically reduces energy loss during the AC-to-DC conversion process. For a typical 80kWh battery pack, our 11kW charger provides a full charge in approximately 7–8 hours, making it the ideal solution for overnight residential and workplace charging.
Technical Expertise & Safety Integrity
Reliability in high-voltage environments is non-negotiable. Our units are engineered to meet the most rigorous automotive functional safety standards:
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Intelligent CAN Bus Integration: Total system synergy is achieved via CAN 2.0B communication. The OBC maintains a continuous “handshake” with the Vehicle Control Unit (VCU) and BMS, dynamically adjusting the charging curve (CC/CV modes) to protect battery chemistry and maximize cycle life.
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Advanced Thermal Management: Available in both Liquid-Cooled (Water/Glycol) and Forced Air-Cooled configurations. The liquid-cooled version features a precision-machined baseplate designed for maximum heat dissipation, ensuring stable 11kW output even at ambient temperatures up to 85°C.
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Bidirectional Capability (V2G/V2L): Built on a scalable hardware platform, our 11kW OBC supports bidirectional power flow, allowing the vehicle to serve as a mobile energy storage unit for Vehicle-to-Grid (V2G) or Vehicle-to-Load (V2L) applications.
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Comprehensive Protection Suite: To ensure Trustworthiness, every unit includes hardware-level safeguards:
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Input Protection: Over-voltage, under-voltage, and surge protection (up to 6kV).
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Output Protection: Short-circuit, over-current, and reverse polarity protection.
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Galvanic Isolation: High-voltage isolation between the AC grid and DC battery side for maximum user safety.
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Technical Specifications
| Feature | 11kW OBC Specification |
| Input Voltage (3-Phase) | 304V – 456V AC |
| Input Voltage (1-Phase) | 85V – 265V AC (Supports derated 3.7kW/6.6kW) |
| Output Voltage Range | 200V DC – 500V DC (Optional 860V DC) |
| Max Output Current | 32A DC |
| Power Factor (PFC) | ≥ 0.99 at Full Load |
| Total Harmonic Distortion | ≤ 5%(Compliant with EN 61000-3-12) |
| Operating Temperature | -40°C to +85°C |
| Communication Protocol | CAN 2.0B (Intel/Motorola formats) |
| Ingress Protection | IP67 |
🛠️ Expert Application & System Integration
Our 11kW OBC is designed for versatile mounting and global compatibility:
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Passenger EVs: The primary AC charging solution for premium EVs utilizing Type 2 (Mennekes) or NACS interfaces.
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Electric Motorcycles: High-power density allows for integration into large-frame electric bikes requiring rapid AC turnaround.
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Commercial Fleets: Ideal for light-to-medium logistics vehicles where efficiency directly impacts total cost of ownership (TCO).
Frequently Asked Questions (FAQ)
Q: Can this OBC handle both 400V and 800V architectures?
A: We provide two dedicated hardware versions. One is optimized for 400V systems (200V–500V DC), and a high-voltage variant is designed specifically for 800V architectures (up to 860V DC).
Q: What are the benefits of SiC technology in an 11kW OBC?
A: Silicon Carbide allows the charger to operate at higher switching frequencies with lower heat loss. This results in a unit that is roughly 30% smaller and 20% lighter than traditional chargers while improving overall energy efficiency to 96%.
Q: Is the software customizable for different VCU/BMS protocols?
A: Yes. We provide full technical support for CAN protocol mapping, ensuring the OBC communicates correctly with your specific vehicle control unit and battery parameters.
