关键词: 双面水冷IGBT, 纯电动, 电机控制

Abstract: The technical scheme of a motor controller for a pure electric vehicle with a maximum output power of 240 kW was introduced, in which the power module used double-sided water-cooled IGBT, and a supporting radiator was designed for it. The IGBTs were connected in parallel and provided a maximum output current of 1 200 A. In terms of structural design, the structural design of the heat sink not only satisfied the cooling of the IGBT, but also provided heat dissipation for the three-phase copper bar, effectively solving the problem of temperature rise of the IGBT and copper bar brought by high power. The overall design of the controller was integrated, which could be assembled with the motor and the reducer as an integrated electric drive assembly, and effectively reduced the longitudinal height of the electric drive assembly, and could be adapted to the rear drive model. The power density can reach 39 kW/L, which is 30% higher than the traditional motor controller using single-sided water-cooled IGBT.

Key words: double-sided water cooled IGBT, pure electric, motor controller