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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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