In the image
below, you can click on any component
for detailed information about that component.
This view shows the contents of
the "IPU" compartment, immediately behind the driver and
passenger seats. This compartment contains the following components:
- The Motor Control
Module (MCM): This is the metal box located in the upper right
corner, which controls when the motor operates in assist or regeneration
mode, and controls the degree of assist/regeneration.
- The Battery Condition
Module (BCM): This it the metal box to the left of the MCM,
just right of center. This tracks the battery state of charge and
decides how much energy can be supplied to or delivered from the
- The Battery
Module: Located below the MCM and BCM, this is the Insight's
144 volt primary battery pack.
Battery Module cooling fan, located in the bottom right portion
of the picture. This two speed fan draws air from the cabin, behind
the right seat, and pulls it through the battery pack.
- The Motor Drive
Module (MDM): This is the component located in the upper
left corner of the picture. The Motor Drive Module contains the
switching electronics used to bidirectionally-directionally send
power between the Battery Module and the IMA Motor, based on instructions
provided to it by the Motor Control Module (MCM).
- Heat Sink: This is the
duller colored component located next to the MDM, which absorbs
and dissipates heat produced by the MDM and DC-DC Converter.
Converter: This is the component located to the right of the
Heat Sink. The DC-DC Converter converts the 144 volt power supplied
by the IMA motor and/or Battery Module into 12 volts to supply the
Insight's conventional 12 volt accessories.
- Power Control Unit (PCU): The
MDM, Heat Sink and DC-DC Converter are collectively known as the
Power Control Unit.
Cooling Fan: This is located in front of the heat sink, and draws
air through the heat sink to aid in cooling of the PCU.
Board: This is the black component, located to the right of
the DC-DC Converter, and is actually part of the Battery Module
assembly. The Junction Board contains the battery module switch,
along with contactors that are used to connect the Battery Module
to the electronics when the Insight is turned on.
Power is carried between the components
in the "IPU" compartment behind the seats and the IMA electric
motor under the hood by three orange cables than run below the floor,
under the left seat.
Modes of Operation