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6.6kw Liquid-Cooled on-Board Charger (OBC) Module
6.6kw Liquid-Cooled on-Board Charger (OBC) Module
6.6kw Liquid-Cooled on-Board Charger (OBC) Module
6.6kw Liquid-Cooled on-Board Charger (OBC) Module
6.6kw Liquid-Cooled on-Board Charger (OBC) Module
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6.6kw Liquid-Cooled on-Board Charger (OBC) Module
6.6kw Liquid-Cooled on-Board Charger (OBC) Module
6.6kw Liquid-Cooled on-Board Charger (OBC) Module
6.6kw Liquid-Cooled on-Board Charger (OBC) Module
6.6kw Liquid-Cooled on-Board Charger (OBC) Module

6.6kw Liquid-Cooled on-Board Charger (OBC) Module

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Product Description

Basic Information
Model NO.
VTC6K6-220S380/540/640-W
Max Output Current
20A/14A/12A
Auxiliary Power
9~32VDC
Efficiency
Above 94%
Communication
Can-Bus
EMC Standard
GB/T18387-2008, En 55022
Package
Wood
Specification
OBC Liquid Cooled
Origin
China
HS Code
8504409999
Product Strength
Full Series Product Range
We offer a comprehensive range of products suitable for electric vehicles, including 6-in-1, 5-in-1, 4-in-1, and 3-in-1 integrated electronic control units (MCU), auxiliary motor control units, and Hybrid EV systems. Our solutions cover Motor + Gearbox integrated systems with power ranges from 3kW to 355kW, compatible with permanent magnet synchronous motors (PMSM) and asynchronous motors.
Long-term Safety and Reliability
With over a decade of field experience, more than 6,000 buses have been equipped with our MCU technology, operating reliably in nearly 20 cities for 8-10 years. Total mileage per vehicle reaches between 500,000 to 700,000 kilometers.
Versatile Vehicle Applications
  • Passenger Vehicles: Mini vans, 8.5m-12m buses, and 18m dual-source trolleybuses.
  • Trucks: Light trucks (3.5-7.5 tons) and heavy trucks (18-55 tons).
  • Specialty Vehicles: Sanitation trucks, sprinkler trucks, dock tractors, and tunnel engineering equipment.
  • Marine Systems: Passenger ships, tourist ships, and cargo vessels.
Product Features
  • Cooling method: Liquid cooled, flow rate > 6L/min
  • Protection Rating: IP67
  • Support for on-line upgrades and remote fault diagnosis
  • Full digital software design with redundant protection functions
Main Technical Parameters
Items Technical Parameters Remarks
Operation Temperature-40~85℃Coolant inlet temperature
Nominal Output Power6.6kw
Input Voltage Range85~265Vac
Output Voltage Range200~450Vdc / 400~650Vdc / 450~750Vdc
Max Output Current20A / 14A / 12A
Auxiliary Power9~32VdcVCC
Efficiency≥94%Nominal voltage
Voltage Accuracy±1%
Current Accuracy±3%
Low Voltage Wake-up200mA maxWake up BMS/VCU
Voltage Wake-upAC/CC/CP/ENSupport reserve charging
CommunicationCAN-BUS
Static Current≤2mASleep mode
ProtectionsInput OVP/UVP, Output OVP/UVP, OTP, OCP, Short circuit, Communication fault
EMC StandardGB/T18387-2008, EN 55022
Cooperative Partners & Projects
Cooperative Partners
Project 1
Project 2
Project 3
Project 4
Project 5
Frequently Asked Questions (FAQ)
1. What is the cooling method used for this 6.6kw OBC module?
The module utilizes a liquid-cooled method with a required flow rate of more than 6L/min to maintain optimal performance.
2. What is the maximum efficiency of the on-board charger?
The device achieves a high efficiency of above 94% under nominal voltage conditions.
3. Does the module support communication with other vehicle systems?
Yes, it uses the standard CAN-BUS communication protocol for seamless integration with BMS and VCU systems.
4. What is the environmental protection rating for this product?
The module is rated IP67, ensuring it is dust-tight and protected against powerful water jets or temporary immersion.
5. Can the software be updated after installation?
Yes, the module supports on-line upgrades and full digital software fault diagnosis.
6. What safety protections are built into the charger?
It includes a redundant protection design covering Input OVP/UVP, Output OVP/UVP, Over-Temperature Protection (OTP), Over-Current Protection (OCP), and short circuit protection.

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