Motor controller of BSG system and integrated BSG system

The invention 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 insulating heat conduction pad, a control panel and a first box body shell; the integrated electrical module assembly comprises asecond box body shell and an integrated electrical module, a second cavity is formed in the second box body shell, and the integrated electrical module is installed in the second cavity; the controlpanel and the integrated electrical module are packaged in different box shells. A certain gap is formed between the control panel assembly and the integrated electrical module assembly; 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, so that the performance of the power mod