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Global development of

industry & technologyin the 21st century

Global development ofGlobal development of

industry & technologyindustry & technologyin the 21st centuryin the 21st century

Accelerated

consumption of

fossil fuels

AcceleratedAccelerated

consumption ofconsumption of

fossil fuelsfossil fuels

1. Energy1. Energy

3. Air quality3. Air quality

Population growth(in USA, Asia, etc.)PopulationPopulation growthgrowth(in USA, Asia, etc.)(in USA, Asia, etc.)

Growing number

of motorvehicles

Growing numberGrowing number

of motorof motorvehiclesvehicles

2. CO22. CO2(global warming measures)(global warming measures)

Three Major Issues


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1 Two electric motors

2 Ni-MH battery3 Power split device

EngineEngine

Power split devicePower split device

GeneratorGenerator

BatteryBattery

MotorMotor

Reduction GearReduction Gear Mechanical

power path

Transmission for HVTransmission for HV

Power Control UnitPower Control Unit

Electrical

power path

Features of SystemPrius (THS) 1997~2003

InverterInverter


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Evolution of Hybrid Units

Continuous improvements (KAIZEN)

The challenge to achieve higher performance

Smaller, lighter units with improved output

Generator

Battery

Inverter

Traction motor

Main hybridsystem units


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EngineEngine

Power split devicePower split device

GeneratorGenerator

BatteryBattery

MotorMotor

Reduction GearReduction Gear Mechanical

power path

Transmission for HVTransmission for HVElectrical

power path

Prius

1 Two electric motors

2 Ni-MH battery3 Power split device

Features of System

High-voltage boost

circuit

(THSII) 2003~

InverterInverter

Power Control UnitPower Control Unit


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Basic componentsToyota Hybrid Synergy Drive

38 28 modules

Module

(6 Cells)

Cell(1,2 V)

273,6 V 201,6 V

HV battery Pack improvements:

- 26% Modules (38 28 modules) - 30% weight (56 kg 39 kg)

- 15 % volume (- 6 l)

- 23% static current drop

more efficient Added connection portionbetween each cell


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0

200

400

600

800

1000

1200

1400

1600

0 500 1000 1500 2000 2500 3000 3500

Output density (W/L)

Outputd

ensity(W/kg)

97 Prius

Smaller

Lighter

35%up

(Cylindrical)

Prismatic resin case

(Prismatic resin case)

00 Prius

03 Prius

Battery


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Toyota Hybrid Synergy Drive

Improvements Toyota Hybrid Synergy Drivevs. THS:

+ 8% petrol power: 53 kW 57 kW+ 50% electric power: 33 kW 50 kW+ 14 % electric torque: 350 Nm 400 Nm over a 3 x wider rangeSubstantial increase in contribution ofelectric motor

Higher voltage to electric motor/generator: 273,6 V 500 V superior power

minimised electrical losses

Enhanced charging capacity ofgenerator: more power and speed

33,8 kW 37,8 kW 6,500 10,000 rpm

Newly developed battery pack

more compact and lighter (-30%)

superioroutput density

improved charge and discharge capacity

Aluminium High voltage wire harness (weight reduction)


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1998 1999 2000 2001 2002 2003 2004 2005 2006 20070

1000

500

1500

PRIUS (US, Europe, )

PRIUS (Japan)

PRIUS(Total)

TOYOTA / LEXUS

HVs (Total)

All HVs including othercompanys HVs (Total)

(Year

HV Market: Cumulative sales (worldwide)

1 million

Cumulativenumberofhybrid

sales

(Thousand)


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Irish Market Experience

Hybrid sales exceed 2,500 at end of 2008

Mainly private buyers

Toyota Ireland role in promoting Hybrid

No.1 in customer satisfaction J.D. Power Resale value is very strong

Appeal of Hybrid reaching a widercustomer base


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Clean

LowCO2emission

50

100

150

200

250

300

0 0.05 0.10 0.15 0.20 0.25 0.30TtW NOx(g/km)

T

tWC

O2(g/km

)

Petrol

Source: VCA data

European C segment vehicles

Prius hybrid

CNG

LPG

Plug-in technology can further enhance the environmental

performance of hybrids both in CO2 & pollutant emissions

Gasoline

Diesel

Plug-in hybridPlug-in hybridEV


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FT-EV Concept


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Plug-in Hybrid


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Household

electricalenergyRecharged mainly at night

120 / 240 VAC single phase

Plug-in hybrids : A new style of electricity utilization

Plug-in Hybrid Vehicle

Battery

Recharging circuitEngine

Motor

MotorMotor Engine

Mainly EV in city

drivingMainly HV in long distance and

high speed driving


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