● Disassembly of Vimax on-board charger
This product is used on Roewe and exported to Europe through the MG brand.
It mainly includes two functions, on-board charger and DC-DC.
This power component mainly includes:
◎ DC-DC power board: capacitor in the upper right corner, etc.
◎ OBC power panel: lower left corner
◎ Control panel: middle right corner
◎ Communication conversion: lower right corner
Filter inductor, etc. The entire component includes bidirectional functions.
● Disassembly of DCDC
This power board mainly includes the step-down process to convert 400V to 12V. It contains 10 SiC MOSFETs, 3 inductors and 2 transformers, which are responsible for completing the HV DC conversion.
This is the overall logic block diagram, which is mainly divided into two parts: DCDC and OBC.
This is an analysis of the cost structure. From the perspective of the cost structure, it is mainly power devices (MOSFET) + passive devices + discrete devices (inductors, etc.).
Summary: China has a very large lead in this field, and its cost and performance are far ahead of the world.
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