PUMBAA PPS550 Power Supply for Electric Vehicles - High-Performance Controller from China Suppliers and Factory
Features of PUMBAA Electric Vehicle Power Supply 4-in-1 CDU Unit
Benefits of PUMBAA 2*DCAC+DCDC+PDU 4-in-1 CDU Unit
The main components adopt automotive-grade parts to significantly improve product reliability and lifespan.
Controller efficiency can be up to 98%, featuring high power density to make vehicle applications more flexible.
High protection levels and wide working temperature range allow adaptation to harsh application environments.
Specification of PUMBAA PPS500 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 |
| Output Current | Rating: 13A | Peak: 19.5A (60S) | |
| Operating frequency | 0-400Hz | |
| System | Operating temperature | -40℃ to 85℃ |
| Cooling mode | Water cooling | |
| Size | 610W × 430D × 209H (mm) | |
| Weight | About 20 kg | |
| Protection level | IP67 | |
Application Scenarios
Pick-up Truck
Van-type Truck
Light Truck
4.5T Light Truck
Rubbish Truck
Sprinkler Truck
Bus
Coach
Heavy Truck
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). This article fully decodes the technical mysteries of this "charging core."
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.
The Translator Role:
• Input: AC from external charging piles;
• Processing: Converts AC to high-voltage DC via power electronics;
• Output: Stable DC tailored to the battery’s charging needs.
(AC charging process illustration)
II. Core Functions: Efficiency and Safety
2.1 Power Conversion: Involves rectification, filtering, and voltage transformation. Modern SiC MOSFET solutions can reach 97% efficiency.
2.2 Intelligent Management: 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 continuous insulation monitoring.
(DC charging interface and flow)
III. Working Principle: The Four-Step Conversion
The process follows a closed-loop: Input → Rectification → Filtering → Voltage Transformation → Output. High-frequency topologies like LLC resonance allow for smaller magnetic components and higher power delivery.
IV. Technological Evolution: The SiC Revolution
The shift from silicon-based IGBTs to Wide-Bandgap devices like SiC MOSFETs has pushed efficiency from 85% to over 97.5%. This allows for 800V high-voltage platforms that enable ultra-fast charging.
(On-Board Charger working scenario)
V. Future Trends: Integration and Intelligence
Future OBCs will see "Multi-Domain Fusion," integrating OBC, DC-DC, and BMS into single modules. This reduces volume by 30% and cost by 20%, while OTA updates allow for continuous optimization of charging strategies.
(On-Board Charger architecture frame)