For those watching not knowing much on how the Toyota Hybrid works, the rectangular box is the inverter Assembly, which has a DC-DC boost converter as well as 2 VFD to generate the 3 phase AC waveform to drive the 2 motors or generate electricity individually. The boost converter increases the battery voltage to 600V as well as regulate the voltage for charging the Hybrid battery. There is a controller inside the inverter Assembly which talks to the PCM.
For those watching not knowing much on how the Toyota Hybrid works, the rectangular box is the inverter Assembly, which has a DC-DC boost converter as well as 2 VFD to generate the 3 phase AC waveform to drive the 2 motors or generate electricity individually. The boost converter increases the battery voltage to 600V as well as regulate the voltage for charging the Hybrid battery. There is a controller inside the inverter Assembly which talks to the PCM.