Product Description
The 4-in-1 auxiliary drive integrated power unit (oil pump + air pump + DC/DC + PDU) delivers a compact, high-performance solution for commercial new-energy vehicles and advanced electric drive systems. Designed for demanding automotive environments, the unit ensures stable conversion, efficient cooling, and intelligent protection—supporting reliable operation across a wide voltage range and load conditions.
Product Other Parameters Information
The WSD-DYBH-24A is engineered to provide stable auxiliary power and multi-functional integration for electric vehicles, industrial machinery, and hybrid systems.
Model: WSD-DYBH-24A
Low-Voltage Auxiliary Control Power Supply: 18–32V
DC Supply Voltage Range: 350–750V
Dimensions: 568×330×155 mm / 568×409.5×166 mm
Ingress Protection: IP67 waterproof and dustproof
DC/DC Power Rating: 3kW
DC/DC Peak Power: 3.6kW
DC/AC Power Rating: 5.5kW & 7.5kW
DC/AC Peak Power: 7.5kW & 11kW
Efficiency (Rated Condition): ≥96%
Cooling Method: Hydrocooling (water cooling)
Control Mode: CAN control, hard-wire control, CAN/hard-wire switching
These parameters ensure seamless performance in demanding EV auxiliary power systems, supporting high-voltage DC conversion, motor drive, and energy management.
High-Efficiency DC/DC & DC/AC Conversion
The integrated converters deliver stable power output with advanced efficiency:
Converts high-voltage DC from the traction battery to 24V low-voltage systems
Supports AC drive loads for pumps, compressors, and auxiliary actuators
≥96% efficiency reduces energy loss and improves overall vehicle power utilization
Ideal for electric buses, logistics EVs, construction machinery, and hybrid systems
Intelligent Protection & Safe Operation
The 4-in-1 auxiliary power unit includes comprehensive DC/AC protection functions, ensuring system reliability under dynamic operating conditions.
Protection modes include:
Over-temperature
Overload
Phase-to-phase short circuit
Overcurrent
Overvoltage / Undervoltage
Phase loss
Motor stall
Sudden load mutation
These instant shutdown protections keep the unit safe from damage and ensure long-term stability in harsh working environments.
Water-Cooled Design for Continuous Performance
The hydrocooling system enhances durability and thermal stability by maintaining safe operating temperatures even under high load. This makes the WSD-DYBH-24A suitable for heavy-duty EV applications, long-distance operation, and high-temperature regions.
Ideal for Next-Generation EV Auxiliary Power Systems
With integrated oil pump, air pump, DC/DC, and PDU functions in a single IP67-rated unit, the WSD-DYBH-24A is an ideal solution for:
Electric commercial vehicles
Electric buses and coaches
Industrial EV platforms
Hydrogen fuel cell auxiliary systems
Heavy-duty hybrid vehicles
This high-performance power module delivers compact design, multi-functional integration, and long-term reliability—supporting the future of intelligent electric mobility.
| Project | Parameter |
| Model | WSD-DYBH-24A |
| Low-voltage auxiliary control power supply | 18~32 |
| DC supply voltage range | 350~750 |
| Dimensions | 568*330*155&&568*409.5*166 |
| Ingress protection | IP67 |
| （kW）/DC/DC power rating | 3 |
| （kW）/DC/DC peak power | 3.6 |
| （kW）/DC/AC power rating | 5.5&7.5 |
| （kW）/DC/AC peak power | 7.5&11 |
| Efficiency (nominal condition) | ≥96% |
| Cooling method | hydrocooling |
| Control mode | Meal control, hard wire control, meal/hard line switching control |
| DCAC protection function | Instant shutdown protection functions such as over-temperature, overload, phase-to-phase short circuit, overcurrent, overvoltage, undervoltage, phase loss, stall, load mutation during operation, etc |
