Hybrid Component Locations & Descriptions - Lexus GS450h Dismantling Manual

Hybrid Component Locations & Descriptions
Component
12 Volt Auxiliary Left Side of
Battery Trunk
Hybrid Vehicle Trunk Area,
(HV) Battery Pack Mounted behind
Rear Seat
Power Cables Undercarriage and
Engine
Compartment
Inverter/ Engine
Converter Compartment
Gasoline Engine Engine
Compartment
Electric Motor Transmission
Electric Generator Transmission
A/C Compressor Engine
(with inverter) Compartment
DC-DC Converter Engine
for 12 Volt Compartment
Auxiliary Battery
DC-DC Converter On HV Battery
for EPS Pack
Fuel Tank and Fuel Undercarriage,
Line Left Side and
Center
*Numbers in the component column apply to the illustrations on the following page.
Location
A lead-acid battery that supplies power to the low voltage
devices.
288 Volt Nickel Metal Hydride (NiMH) battery pack
consisting of 40 low voltage (7.2 Volt) modules connected
in series.
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.
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 motor
(regenerative braking) to DC that recharges the HV
battery pack.
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.
3-phase high voltage AC permanent magnet electric motor
contained in the transmission and drives the rear wheels
through the propeller shaft.
3-phase high voltage AC generator that is contained in the
transmission and recharges the HV battery pack.
3-phase high voltage AC electrically driven motor
compressor.
Converts 288 Volts from the HV battery pack to 12 Volts
for low voltage vehicle power.
Converts 288 Volts from the HV battery pack to 46 Volts
for EPS. Dull yellow colored sheathing identifies 46
Volts wires that are routed under the vehicle body to
power the EPS.
The fuel tank provides gasoline via a fuel line to the
engine. The fuel line is routed along the left side and
center tunnel under the floor pan.
Description
6