PUMBAA PPS550 Power Supply for Electric Vehicles - China Suppliers and Factory for 4-in-1 Controller Solutions
Features of PUMBAA Electric Vehicle Power Supply 4-in-1 CDU Unit
Benefits of PUMBAA 4-in-1 CDU Unit
● Powerful hardware configuration The main components adopt automotive components to improve product reliability.
● Efficient operation Controller efficiency can be up to 98%, high power density, applications more flexible.
● Reliable protective design The overall protection level is high and the working temperature range is wide, adapting to harsh environments.
Specification of PUMBAA 4-in-1 CDU Unit
| Model | PPS500 | |
| Functional integration | 2*DCAC+DCDC+PDU | |
| Applicable models | Logistics vehicles, sanitation vehicles | |
| Input | High Voltage | 200-750V |
| Low pressure | 24V | |
| Output | Power | Rating: 5.5kW | Peak: 8.2kW |
| Current | Rating: 13A | Peak: 19.5A (60S) | |
| Frequency | 0-400Hz | |
| System | Operating Temp | -40℃ to 85℃ |
| Cooling mode | Water cooling | |
| Size | 610W × 430D × 209H (mm) | |
| Weight | About 20 kg | |
| Protection | IP67 | |
Application Scenarios
What is an Electric Vehicle OBC? An In-Depth Analysis
Introduction: When you plug an electric vehicle (EV) into a charging pile, how does alternating current (AC) transform into the direct current (DC) required by the battery? The "unsung hero" behind this critical conversion process is the EV On-Board Charger (OBC).
I. OBC Definition: The EV's "Charging Translator"
OBC (On-Board Charger) is a core component in an EV's electric drive system responsible for converting AC to DC. It processes AC from home or commercial chargers into the high-voltage DC required by the battery through rectification, filtering, and voltage transformation.
II. Core Functions of OBC
2.1 Power Conversion: Rectification → filtering → voltage transformation steps to provide smooth DC with minimal ripple.
2.2 Charging Control: Dynamically adjusts current and voltage (CC/CV charging) based on Battery Management System (BMS) data.
2.3 Safety Protection: Includes overvoltage, overcurrent, short-circuit protection, and insulation monitoring.
III. OBC Working Principle
The process follows a four-step loop: Input Receiving → Rectification (AC to pulsating DC) → Filtering (Smoothing) → Voltage Transformation (Matching battery requirements) → Stable Output.
IV. Technological Evolution: From Silicon to SiC
Early OBCs used silicon-based IGBTs with 85-90% efficiency. Modern units use SiC MOSFETs, pushing efficiency beyond 97% and reducing the size of magnetic components.
V. Future Trends: Integration & Intelligence
Future OBCs are moving toward Multi-Domain Fusion (OBC+DCDC+BMS integration) and supporting 800V High-Voltage Platforms. Intelligence features like predictive charging via Autonomous Driving Systems (ADS) are also emerging.
