Hybrid Component Locations & Descriptions - Lexus MZAH10 Series Manual

Hybrid Component Locations & Descriptions
Component
Luggage
12 Volt Auxiliary
Battery 
Compartment
Hybrid Vehicle Cabin Area,
(HV) Battery Mounted Under
Pack 
Rear Seat
Power Cables 
Undercarriage,
Engine
Compartment and
Under the
Luggage
Compartment*1
Inverter/ Engine
Converter 
Compartment
Rear Inverter *1 Under the
Luggage
Compartment*1
Gasoline Engine Engine

Compartment
Front Electric Engine
Motor 
Compartment
Rear Electric Under the
Motor 
Luggage
Compartment*1
Electric Generator Engine

Compartment
A/C Compressor Engine
(with Inverter) 
Compartment
DC-DC Converter Engine
for 12 Volt Compartment
Auxiliary Battery
Fuel Tank and Fuel Undercarriage and
Line Center
*Numbers in the component column apply to the illustrations on the following page.
*1: for AWD
Location
Supplies electricity to the electrical components.
• Supplies electrical power to MG1, MG2 and MGR*1 in
accordance with the driving conditions of the vehicle.
• Recharged by MG1 and MG2 in accordance with the
SOC and the driving conditions of the vehicle.
Connects the HV battery, inverter with converter
assembly, hybrid vehicle transaxle assembly, compressor
with motor assembly, rear traction motor with transaxle
assembly*1 and rear hybrid motor control inverter
assembly*1.
• Converts the direct current from the boost converter
into alternating current for MG1 and MG2, and vice
versa (from AC to DC).
•Boosts the HV battery nominal voltage of DC 216 V up
to a maximum voltage of DC 650 V and vice versa
(steps down DC 650 V to DC 216 V).
•Takes current from the HV battery and branches it to the
inverter with converter assembly.
•Converts the HV battery current to 3-phase AC and
supplies it to MGR.
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.
• MG2, which is driven by electrical power from MG1
and the HV battery, generates motive force for the drive
wheels.
• During braking, or when the accelerator pedal is not
depressed, it generates high-voltage electricity to recharge
the HV battery.
MG3, which is driven by electrical power from MG1 and
the HV battery, generates motive force for the drive
wheels.
MG1, which is driven by the engine, generates
high-voltage electricity in order to operate MG2 and
charge the HV battery. Also, it functions as a starter to
start the engine.
3-phase high voltage AC electrically driven motor
compressor.
Steps down the HV battery nominal voltage of DC 216V
to approximately DC 14 V in order to supply electricity to
the electrical components, as well as to recharge the
auxiliary battery.
The fuel tank provides gasoline via a fuel line to the
engine. The fuel line is routed under the center of
vehicle.
Description
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