iaa commercial vehicles battery technology - vda...hev batteries for cv, examples battery...

September 29th, 2010

IAA Commercial VehiclesBattery Technology

external | SBLD/ENG1 | 13/09/2010 | © SB LiMotive Co. Ltd. reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

IAA Commercial Vehicles, Sept. 29th, 2010

Table of contents

Introduction of SB LiMotive

Li-Ion cells

Automotive Li-Ion batteries

Conclusion

102480



Introduction of SB LiMotive JV between Samsung SDI and Bosch

50% 50%

Scope of Business:Development and manufacturing of Lithium-ion battery cells and battery systems for automotive power-train and 14V applicationsμHEVHEVPHEVEVe-Scooter

Scope of Business:Development and manufacturing of Lithium-ion battery cells and battery systems for automotive power-train and 14V applicationsμHEVHEVPHEVEVe-Scooter

50% 50%

102480



Li-Ion CellsWhy Li-Ion in Automotive Batteries?

100.000

10.000

1.000

100

10

10 20 40 60 80 100 120 140 160 180 200

Spec

ific

Pow

er, W

/kg

Specific Energy, Wh/kg

DLC

Li-IonHigh EnergyNi-MH

Pb-Acid

Li-IonHigh Power

ZEBRA

100CRate

10CRate

1CRate

0.1CRate

0.01CRate

220 240 260

100CRate

10CRate

1CRate

0.1CRate

0.01CRate

100CRate

10CRate

1CRate

0.1CRate

0.01CRate

Targets for Lithium-ion cellswith improved materials

Li-Ion is one of the most promising energy storage technologies102480



Li-Ion Cells“Rocking Chair” Principle

Li+conductingelectrolyte

Positivecurrent

collector (Aluminium)

Negativecurrent collector(Copper)

102480



Li-Ion CellsHousing Types

Cylindrical Cell(Hardcase)

Pouch Cell(Softpack)

Prismatic Cell(Hardcase)

102480



Battery Management System (BMS)Necessary to fulfill requirements regarding safety, lifetime and performance

Automotive Li-Ion BatteriesArchitecture

MMBatteryBattery=

3~

Typical Li-Ion BatteryCell voltage 2,8V..4,2VCells in series connectionCells optional in parallel connection to increase capacityPrecharge unit and 2 main relays

+

_

BMSBMSSensors

Controls

Actuators

102480



Performance

> 5000 W/kg (HEV)> 200 Wh/kg (EV)

Automotive Li-Ion BatteriesKey Success Factors

MMBatteryBattery=

3~

ChallengesRequirements have to be fulfilledall togetherImplementation of whole value chain including recyclingBuild up of infrastructure

Lifetime

> 10 years> 250 000 km

Safety

No thermal incidents in field

Quality

Cost

< 30 $/kW(HEV)< 300 $/kWh (EV)

Commercial VehiclesRequirements regarding lifetime and environmental conditions are more severe than in passenger cars250 000 km …

1 500 000 km

LifetimeLifetime

Small manufacturingtolerances

102480



Calendaric ageing

Cyclic ageing

Automotive Li-Ion BatteriesLifetime

Lifetime,SOH

ReplacementReplacement

Break downBreak down

DischargeDischargeDischarge

SOC State of Charge, SOH State of Health

ChargeChargeCharge # of cycles# of cycles# of cycles

SOCCalendar time SOCSOCCalendar timeCalendar time

Cell temperatureCell temperatureCell temperature

102480



Automotive Li-Ion BatteriesLifetime

Degradation ~ √ Lifetime

Perf

orm

ance

/ Pe

rfor

man

ce B

OL

Lifetime

1,0

tEOL80%

0,8

tEOL70%

0,7

Typical EOL definition for passenger car applications

EOL definition withdoubled lifetime

tEOL70% ≈ 2·tEOL80%

102480



LCVLC

V/C

V

Automotive Li-Ion BatteriesPerformance, Power to Energy Ratio

20

40

60

80

100

120

140

160

5 10 15 20 25 30 35

Pow

er [k

W]

Energy [kWh]

High Power5 Ah class

P E

= 50P E

= 10

P E

= 5

P E

= 3

EV

EV Sports Car

PHEV(1

0 mls) PHEV

(20 mls)

HEV

EV

EV Sports Car

PHEV(1

0 mls) PHEV

(20 mls)

HEV

102480

Power and Energy20 Ah class

High Energy with optimized power 40Ah class

High Energy60Ah class



Automotive Li-Ion BatteriesHEV Batteries for CV, Examples

Battery Specification Medium Power High Power# of High Power cells 160 (80s2p) 320 (160s2p)Nominal voltage 300 V 600 VMaximum voltage 336 V 672 VMaximum current ±400 A ±400 AUsable energy content @BOL 1.6 kWh 3.2 kWhPeak discharge power @BOL, 10s, 50% SOC 110 kW 220 kWWeight ~85 kg ~150 kg

BOL Begin of lifeSOC State of charge

102480



Automotive Li-Ion BatteriesConclusion

Technology of Li-Ion batteries for passenger cars can be applied for LCV battery system

Same chemistry can be used

Definition of “end of life” has to be adapted to LCV requirements regarding cycle lifetime and calendar lifetime

Carry over of battery management system and housing technology possible

Introduction of Li-Ion batteries in LCV simultaneous with passenger cars possible

102480



Thank you for your time and attention

102480

iaa commercial vehicles battery technology - vda...hev batteries for cv, examples battery...

Documents