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Electromobility - press workshop
The future of electromobility Bosch technologies for electric vehicles | Dr. Matthias Küsell
1 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Bosch technologies for electric vehicles | Dr. Matthias Küsell
From the hybrid to the electric vehicle
Electromobility - press workshop
From the hybrid to the electric vehicle
HybridConventionalcombustion engine Plug-in hybrid
Electric vehicle with range extender Electric vehicle
Inverter Inverter Inverter Inverter
Charger Charger Charger
ompo
nent
s
Battery HV battery HV battery HV battery HV battery
mot
orE
co
ncl.
elec
tric
mP
ower
train
in
2 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
P
Electric vehicle: focal points of development workElectromobility - press workshop
Electric vehicle: focal points of development work
Enhancedefficiency • Optimized electric
t d i
Safety• Safety concept for
hi h lty
Greater rangeReduced cost
motor design• Regenerative braking• Thermal and energy
management
Ensure compliance with conventional
high voltages• Vehicle
management• Adjustment to
vehicle dynamicscost conventional automotive standards
vehicle dynamics control system
• System conformity with ISO26262
Electric powertrainperformance
Acceleration
Comfort
Orient to stand-
• Optimized electric motor design
• Improved cooling of electric motor and
• Reduction of powertrain vibration
• Rapid battery charge• Optimized climate
Climbing powerMaximum speed
ard comfort of conventional vehicles
electric motor and power electronics
• Improved energy density of battery
• Optimized climate control
3 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Range depends on efficiency of electrical consumers
Electromobility - press workshop
g p y
200km
Range
150km
100km
50km
Basic electric vehicle
0kmLow-beam headlights
Low-beam headlights,
wipers
Low-beam headlights,
wipers,heated seats
Phoenix, AZ+40
A/C consumes 3kW
Moscow,-10
Heating consumes 6kW
Basic electric vehicle:• Weight 1000 kg • Ø Engine power 4.5 kW• Ø Speed 33 6 kph
heated seats 3kW consumes 6kW
• Energy consumed by driving alone 13.8 kWh/100km• Battery capacity 30 kWh• Drag 0 71
4 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Ø Speed 33.6 kph Drag 0.71
Focus: improve efficiency of vehicle as a whole
Electromobility - press workshop
p y
Enhancedffi i
Actions Examples
Electric powertrain:El i • Power rating
efficiency • Electric motor• Power electronics
Power rating• Continuous torque
Brake • Cooperative regenerative braking system
• Increased range
Auxiliary units • Vacuum-free braking system• Electro-mechanical power steering
Th l t & HVAC• Keeping passenger compartment at right
t t• Increased range• Reduced cost
Thermal management & HVAC temperature • Keeping components at right temperature
Power management• Enhanced operating strategies by linking with
navigation system (e.g. range extender) • Selective shutdown of auxiliary units• Selective shutdown of auxiliary units
Battery• Progress in cell chemistry • Optimize battery management system• Best possible thermal management
5 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Electric powertrain: development ojectivesElectromobility - press workshop
Electric powertrain: development ojectives
Electric powertrainHybrid vehicle
Electric powertrainElectric vehicleOptimization and enhancement
Enhanced efficiencyat EV-specific operating points
Hybrid vehicle Electric vehicle (EV)
Optimization and enhancement
Increased power ratingthrough improved cooling
Requirements:• Limited installation space
Requirements:• High efficiency at p
• Maximum torque• Maximum power
g ylow torque
• Continuous and maximum torque
6 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Technologies for electric motorsElectromobility - press workshop
Technologies for electric motors
PSMPSM ESM (permanent magnet synchronous motor)
Advantages with respect to installation space, power density, and weight
Mature technology used in all separateMature technology, used in all separate motor generators
ESM
Installation space smaller larger
Mechanical power identical
Power density higher lower(electrically excited synchronous motor)
Technological risksStrategic alternative due to high cost
sensitivity of rare earth metals
Power density higher lower
Maximum torque identical
Efficiency lower highersensitivity of rare earth metals (neodymium)Weight lower higher
7 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Reducing the heating load for electric vehicles
Electromobility - press workshop
g g
• Thermal insulation
• Climate controlas required
• Reductionof thermal
I. Reduction of energyrequirements
ent
[W]
Use waste heatComponents
(Electric motor, battery)
Conventionalvehicle
of thermal masses
II. Heatrecovery
ad r
equi
rem
e
= EV
with minimized heating load
( , y)
= EV
i h
Pre-heat/pre-coolwhile connected to mains
= EVHea
ting
loa
eat g oadwith
thermal management with pre-heat/pre-cool
Heating/cooling of the passenger compartment can reduce battery range by 40%.
8 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Objective Reduced energy demand without significant sacrifice of comfort
Electromobility - press workshop
Link-up with navigation systemLink up with navigation systemEnergy-efficient route
vehicle-specific energy-consumption modelR h i iRoute characteristics
Precise and up to the minute range estimatePrecise and up-to-the-minute range estimateconsumption model + route characteristicsvisualization of current range (update as a result of traffic jams, or because heating/cooling is on)
Destination
Home
( p j , g/ g )
Support for driver in optimizing range taxiing assistant to make most of recuperation
Kinder-garten
speed limit aheadtaxiing assistant to make most of recuperation potentialuse of heating/cooling, influence of choice of speed
speed limit ahead
9 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Electromobility - press workshop
Charger for high-voltage battery in EV & PHEVStatus:
External charge spots not yet available on a wide scaleE h k i i l "filli i "
Charger for high voltage battery in EV & PHEV
Each power socket is a potential "filling station"High-voltage battery recharged over night or while at work
Objective "on board" charger for global useObjective: "on-board" charger for global use
Challenges: Mains voltages and frequencies worldwideMains voltages and frequencies worldwideStandards (vehicles and power grids)Efficiency, installation space, weightService life and environmental conditions in the vehicleService life and environmental conditions in the vehicleUse optimum charging to increase service life of high-voltage battery
Standard charger for all power grids: one-phase, 3.3 kW charging capacityBosch is developing scalable charger (3 3 kW 6 6 kW 10 kW)
10 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Bosch is developing scalable charger (3.3 kW, 6.6 kW, 10 kW)
Electromobility - press workshop
SummarySummary
Bosch has integrated systems competence, and is developing all the components for electric driving such as the electric motor powercomponents for electric driving, such as the electric motor, power electronics, battery (SB LiMotive), charger, and brake systems
Efficiency, and how to improve it, plays a central role in the systematicEfficiency, and how to improve it, plays a central role in the systematic optimization of the energy efficiency of hybrid and electric vehicles.
Bosch parallel-strong hybrid system is already in series productionSeries development underway for customer projects for electric vehicles and further hybrids
11 GS-EH/MKT | 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
Presse-Workshop Elektromobilität
12 07.07.2010 | © Robert Bosch GmbH 2010. Alle Rechte vorbehalten, auch bzgl. jeder Verfügung, Verwertung, Reproduktion, Bearbeitung, Weitergabe sowie für den Fall von Schutzrechtsanmeldungen.
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