Onboard Chargers (OBC)
3.3KW OBC Charger Series
Designed for 72V and 96V electric vehicle battery platforms. Featuring CAN Bus communication, high charging efficiency, air cooling and comprehensive protection functions, it provides reliable AC charging for electric motorcycles, utility vehicles and commercial EV applications.
3.3kW On-board Charger Series for 72V & 96V Electric Vehicles
Product Overview
The 3.3kW On-board Charger Series is designed for charging traction batteries in new energy vehicles and is available for both 72V and 96V battery platforms.
With a wide 90–264VAC input range, CAN Bus communication, air cooling and multiple electrical protection functions, the charger provides stable and reliable onboard charging for different electric vehicle platforms.
Both versions deliver up to 3.3kW output power at 220VAC input and 1.65kW at 110VAC input, with a maximum efficiency of ≥93%. The compact 4.3kg design supports vehicle integration where installation space, charging reliability and communication capability are important.
Key Features
3.3kW Charging Power
Provides up to 3300W charging power at 220VAC input and 1650W at 110VAC input.
72V & 96V Battery Platforms
Two voltage versions are available to support different electric vehicle battery systems.
Wide AC Input Range
Supports 90–264VAC input and 47–63Hz frequency, allowing operation with different AC power supplies.
CAN Bus Communication
CAN Bus communication is supported for integration with vehicle control and battery management systems.
High Power Factor
Power factor is ≥0.98 at more than half load.
High Conversion Efficiency
Maximum efficiency is ≥93% for both versions.
Air-Cooled Design
Both models use air cooling and weigh approximately 4.3kg.
Multiple Protection Functions
Protection includes over-voltage, under-voltage, over-current, short-circuit and over-temperature protection.
Available Models
Model | Battery Platform | Output Voltage | Output Current | Rated Power |
|---|---|---|---|---|
PO-AA-3D-72 | 72V DC | 50–100V DC | 0–40A | 3.3kW |
PO-AA-3D-96 | 96V DC | 64–128V DC | 0–32A | 3.3kW |
72V版本的输出范围为50–100V DC、最大40A；96V版本为64–128V DC、最大32A。
Model Comparison
Specification | 72V Version | 96V Version |
|---|---|---|
Model | PO-AA-3D-72 | PO-AA-3D-96 |
Battery Platform | 72V DC | 96V DC |
AC Input Voltage | 90–264VAC | 90–264VAC |
Input Frequency | 47–63Hz | 47–63Hz |
Input Current | 0–16A | 0–16A |
Power Factor | ≥0.98 | ≥0.98 |
Standby Power | ≤5W | ≤5W |
Output Voltage | 50–100V DC | 64–128V DC |
Output Current | 0–40A | 0–32A |
Output Power @ 220VAC | 3300W | 3300W |
Output Power @ 110VAC | 1650W | 1650W |
Constant Voltage Accuracy | ±1% | ±1% |
Constant Current Accuracy | ±2% | ±2% |
Maximum Efficiency | ≥93% | ≥93% |
Cooling Method | Air Cooling | Air Cooling |
Weight | 4.3kg | 4.3kg |
Communication | CAN Bus | CAN Bus |
Charging Performance
The charger supports a wide AC input voltage range and automatically provides controlled DC charging output according to the selected battery platform.
The 72V version provides 50–100V DC output with up to 40A output current, while the 96V version provides 64–128V DC output with up to 32A output current.
Both versions provide constant-voltage accuracy of ±1% and constant-current accuracy of ±2%, supporting stable battery charging throughout the charging process.
Protection Functions
The onboard charger integrates multiple protection functions for reliable vehicle operation.
72V Version
- Input Under-voltage Protection: 90VAC ±2V
- Input Over-voltage Protection: 264VAC ±2V
- Output Under-voltage Protection: ≤45V DC
- Output Over-voltage Protection: ≥105V DC
- Output Over-current Protection
- Output Short-circuit Protection
- Over-temperature Protection
96V Version
- Input Under-voltage Protection: 90VAC ±2V
- Input Over-voltage Protection: 264VAC ±2V
- Output Under-voltage Protection: ≤59V DC
- Output Over-voltage Protection: ≥133V DC
- Output Over-current Protection
- Output Short-circuit Protection
- Over-temperature Protection
For thermal protection, the charger begins power reduction at an internal temperature of 85°C and shuts down at 90°C.
CAN Communication & Vehicle Integration
Both versions support CAN Bus communication.
The signal interface includes CANH and CANL together with wake-up, charging connection confirmation, charging connection guidance, high-voltage interlock and electronic lock-related signals, supporting integration into vehicle charging and control systems.
Cooling & Mechanical Design
Both chargers use an air-cooled design and weigh approximately 4.3kg.
The two versions share a compact onboard installation concept, making them suitable for integration into electric vehicle platforms where charging power, communication and installation space need to be balanced. PO-AA-3D-96 3.3kW charger 96V.pdfPDF
Applications
Designed for new energy vehicle traction battery charging, with separate versions available for 72V and 96V battery platforms.
