Output Power: 6KW
Input Voltage Range: 350-750Vdc
Output Voltage: 27.5Vdc
Output Current: 218A
Operation Temp. Range: -40℃-85℃
Cooling Method: Air
Storage Temp.:  -40℃-85℃
Ripple&Noise: ≤500mVp-p
Dimension: （293±1）mm×(236±1)mm×(116±1)mm

 

A DC-DC converter in an electric bus, also known as a DC-DC converter or voltage regulator, is an essential component that plays a crucial role in the electrical system of the vehicle. It is a power electronic device designed to convert the high-voltage direct current (DC) power from the bus's battery pack to a lower-voltage DC power required by various auxiliary systems and components within the bus, such as lighting, heating, ventilation, air conditioning (HVAC), and electronic control units (ECUs).

The DC-DC converter operates by taking the input voltage from the high-voltage battery, typically ranging from 300 to 800 volts DC, and efficiently converting it to a safer and more manageable voltage level, usually between 12 to 14 volts DC, which is suitable for the low-voltage electrical loads. This conversion process involves regulating the voltage, managing the current flow, and ensuring a stable and reliable power supply to the auxiliary systems, even as the state of charge of the main battery fluctuates during operation.

In addition to its voltage conversion function, the DC-DC converter also incorporates protection features to safeguard against overcurrent, overvoltage, and short circuits, ensuring the longevity and safety of both the converter itself and the connected electrical components. It is typically housed within a robust enclosure to withstand the harsh environmental conditions encountered in a bus operating environment, such as vibrations, temperature variations, and moisture.

Overall, the DC-DC converter is a critical component in the efficient and reliable operation of an electric bus, enabling the seamless integration of high-voltage battery power with the low-voltage auxiliary systems necessary for a comfortable and functional passenger experience.