Core Insights - The article focuses on the disassembly and analysis of the inverter used in the Xiaomi SU7 electric vehicle, highlighting its importance as a core component of the vehicle's power drive system [5][9]. Group 1: Key Parameters and Supplier Information - The inverter supports a maximum stable speed of 21,000 RPM and operates on a 400V system with an output power of 220KW [9]. - The core supplier for the inverter is UAES (United Automotive Electronics), a joint venture between a parent company and a Chinese enterprise [9]. Group 2: Disassembly Process and Component Analysis - The inverter features a protective cover and a well-organized layout for the DC side terminals, ensuring safety in high-voltage environments through specialized sealing materials [11]. - The signal system is designed with a focus on electromagnetic compatibility (EMC), utilizing soft materials to absorb noise and featuring a gate drive circuit with an Infineon MCU and an Allegro current sensor [18][19]. - The power circuit includes three 2-in-1 silicon carbide (SiC) modules, a CLC filter circuit for input current stabilization, and a current sensor for real-time monitoring [21]. - The cooling system employs a water-cooling mechanism designed by Bosch, ensuring efficient heat dissipation for the power module and capacitors [25]. Group 3: Key Design Highlights - Noise control is achieved through the use of soft materials in the signal system and optimized wiring in the power circuit to minimize electromagnetic interference [29]. - The inverter is lightweight (approximately 10kg) due to the extensive use of flat transformers and compact packaging of the SiC modules [29]. - A multi-layer cooling design addresses the heat generation of power devices and capacitors, suitable for the 220KW high power output requirement [29]. - Structural stability is enhanced through laser welding at critical connection points and the use of large bolt specifications [29].