Overview of the 3-in-1 Integrated Auxiliary Power Unit
The WSD-DYBH-11A is a compact and intelligent 3-in-1 auxiliary power module that integrates an onboard charger (OBC), a DC/DC converter, and a PDU. Designed for modern new-energy vehicles, its optimized product parameters deliver high power density, stable performance, and seamless system integration.
Core Technical Specifications
Compact Design & Reliable Protection
Dimensions: 412 × 297 × 167 mm
Ingress protection: IP67 (dustproof and waterproof)
Low-voltage control power supply: 18–32V
DC supply voltage range: 200–450V
These parameters support long-tail keywords such as compact OBC module, IP67 protected power unit, and wide-voltage DC system.
High-Performance OBC & DC/DC System
Onboard Charger (OBC)
Rated power: 6.6 kW
High power density for fast and efficient charging
Modular design to simplify integration into electric vehicle systems
DC/DC Converter
Rated power: 1.5 kW
Peak power: 1.8 kW
Hydrocooling ensures stable thermal performance under continuous load
These features enhance long-tail ranking for phrases like 6.6kW OBC charger system, efficient DC/DC converter module, and water-cooled EV auxiliary power unit.
Intelligent Control & Safety Features
Flexible Multi-Mode Control
CAN control
Hard-wire control
CAN / hard-wire switching
Comprehensive OBC Protection Mechanisms
The integrated OBC module includes:
Input over/under-voltage protection
Output over/under-voltage protection
Over-temperature protection
Over-current protection
Output short-circuit protection
Redundant safety design
Online upgrade support
Intelligent fault diagnosis
These capabilities align with long-tail queries like EV charger protection system, redundant safety OBC design, and digital onboard charging technology.
| Project | Parameter |
| Model | WSD-DYBH-11A |
| OBC（kW） | 6.6 |
| Low-voltage auxiliary control power supply | 18~32 |
| DC supply voltage range | 200~450 |
| Dimensions | 412*297*167 |
| Ingress protection | IP67 |
| /DC/DC power rating | 1.5 |
| /DC/DC peak power | 1.8 |
| Cooling method | hydrocooling |
| Control mode | Meal control, hard wire control, meal/hard line switching control |
| Module OBC features | High power density, modular design, convenient system integration, support online upgrade and fault diagnosis, all-digital software design, redundant protection function design; It has protection functions such as input over-under-voltage, output over-under-voltage, over-temperature, over-current, and output short circuit |
