Motor controller of BSG system and integrated BSG system

The utility model discloses a motor controller of a BSG system and an integrated BSG system, the motor controller of the BSG system comprises a control panel assembly and an integrated electrical module assembly, and the control panel assembly comprises a first radiator, an insulation heat conduction pad, a control panel and a first box body housing; the integrated electrical module assembly comprises a second box shell and an integrated electrical module, a second cavity is formed in the second box shell, and the integrated electrical module is installed in the second cavity; the control panel and the integrated electrical module are packaged in different box shells, and a certain gap exists between the control panel assembly and the integrated electrical module assembly, so that the thermal resistance between the power module and the control panel in the integrated electrical module can be increased, the maximum allowable working temperature of the power module is improved, and the reliability of the power