3.3KW on board charger
3.3kW On-Board Charger (OBC) | IP67 Waterproof | High-Efficiency Power Solution for Electric Vehicles
Our 3.3kW On-Board Charger is a high-performance, automotive-grade power conversion unit engineered for electric motorcycles, utility vehicles, and passenger EVs. Built with a fully digital software architecture, this charger delivers a stable 3.3kW output while maintaining an ultra-compact footprint, making it the ideal choice for modern vehicle integration where space and thermal efficiency are critical.
Key Product Features
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Advanced Thermal Management: Available in both high-performance Air-Cooled and specialized Liquid-Cooled configurations to meet diverse chassis requirements.
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Rugged Automotive Protection: Rated at IP67, ensuring complete protection against dust ingress and high-pressure water jets.
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Intelligent Diagnostics: Supports online firmware upgrades and comprehensive fault diagnosis to reduce maintenance downtime.
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Wide Voltage Versatility: Supports a broad AC input range (90-265VAC) and output configurations from 48V to 500VDC.
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Safety First Design: Features a redundant protection system, including input/output under-voltage, over-temperature, and short-circuit safeguards.
Technical Excellence & Engineering Authority
1. Optimized Power Conversion
Efficiency is the cornerstone of sustainable e-mobility. This 3.3kW unit achieves a conversion efficiency of ≥ 92% (Air-cooled) to ≥ 94% (Combined architectures). By utilizing an Active Power Factor Correction (APFC) function with a power factor of ≥ 0.98, it minimizes energy waste and harmonic distortion on the grid.
2. Precision and Reliability
Reliability in the field depends on accuracy. Our charger provides:
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± 1% Voltage Accuracy: Ensuring stable charging curves that prolong battery life.
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± 3% Current Accuracy: Maintaining consistent power delivery across the entire charging cycle.
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Low Static Current: Consumes ≤ 2mA in sleep mode, preventing auxiliary battery drain during long-term storage.
3. Smart Vehicle Integration
Seamlessly communicate with your Vehicle Control Unit (VCU) or Battery Management System (BMS) via high-speed CAN-BUS. The unit supports multiple wake-up methods, including AC wake-up and CC/CP signal detection, enabling smart scheduled charging and automated power management.
Technical Specifications
| Category | Parameter | Specification |
| Electrical | Rated Power | 3.3kW |
| Input Voltage Range | 90V–265VAC | |
| Output Voltage Range | 30V–70VDC / 190V–500VDC | |
| Max Output Current | Up to 68A | |
| Environmental | Operating Temp | -40°C to +85°C (Internal/Inlet) |
| Ingress Protection | IP67 | |
| Noise Level | ≤ 45dB | |
| Control | Communication | CAN-BUS |
| Static Current | ≤ 2mA |
Frequently Asked Questions (FAQ)
Q: Can this 3.3kW OBC be used for different battery chemistries?
A: Yes. The fully digital software control allows for the customization of charging curves to support Lithium-ion, LifePO4, and Lead-acid battery packs.
Q: How does the IP67 rating benefit my vehicle?
A: IP67 ensures the internal electronics are hermetically sealed. This allows the vehicle to operate safely in heavy rain, mud, and dusty industrial environments without risk of short circuits or corrosion.
Q: Does it support 110V and 220V power grids?
A: Absolutely. The wide input range of 90V to 265VAC ensures global compatibility with both North American and European power standards.
Q: Is the cooling system customizable?
A: We provide flexible thermal solutions. Depending on your vehicle’s airflow and space, you can choose between a compact air-cooled finned housing or a high-efficiency liquid-cooled baseplate.
