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Hybrid Synergy Drive Component Locations &
Descriptions
Component
Location
Description
12 Volt
Auxiliary
Battery
Trunk Passenger
Side
A lead-acid battery that supplies power to the
low voltage devices.
Hybrid
Vehicle (HV)
Battery Pack
Trunk Area,
Mounted to
Cross Member
and Behind Rear
Seat
244.8 Volt Nickel Metal Hydride (NiMH) battery
pack consisting of 34 low voltage (7.2 Volt)
modules connected in series.
Power Cables
Undercarriage
and Engine
Compartment
Orange colored power cables carry high voltage
Direct Current (DC) between the HV battery
pack, inverter/converter, and A/C compressor.
These cables also carry 3-phase Alternating
Current (AC) between the inverter/converter,
electric motor, and generator.
Inverter/
Converter
Engine
Compartment
Boosts and inverts the high voltage electricity
from the HV battery pack to 3-phase AC
electricity that drives the electric motors. The
inverter/converter also converts AC electricity
from the electric generator and electric motors
(regenerative braking) to DC that recharges the
HV battery pack.
Gasoline
Engine
Engine
Compartment
Provides two functions:
1) Powers vehicle.
2) Powers generator to recharge the HV battery
pack.
The engine is started and stopped under control
of the vehicle computer.
Electric
Motor
Engine
Compartment
3-phase high voltage AC motor contained in the
front transaxle. It is used to power the front
wheels.
Electric
Generator
Engine
Compartment
3-phase high voltage AC generator that is
contained in the front transaxle and recharges the
HV battery pack.
A/C
Compressor
(with
Inverter)
Engine
Compartment
3-phase high voltage AC electrically driven
motor compressor.
Hybrid Synergy Drive Components
Components (Top View) and High Voltage Power Cables
