IAA Commercial Vehicles Battery Technology. September 29 th, 2010

Transcription

1 IAA Commercial Vehicles Battery Technology September 29 th, 2010

2 Table of contents Introduction of SB LiMotive Li-Ion cells Automotive Li-Ion batteries Conclusion Page 2

3 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 applications μhev HEV PHEV EV e-scooter Page 3

4 Li-Ion Cells Why Li-Ion in Automotive Batteries? DLC Targets for Lithium-ion cells with improved materials 100CRate Li-Ion Specific Power, W/kg Pb-Acid Ni-MH High Power Li-Ion High Energy 10CRate 1CRate 0.1CRate 10 ZEBRA 0.01CRate Specific Energy, Wh/kg Li-Ion is one of the most promising energy storage technologies Page 4

5 Li-Ion Cells Rocking Chair Principle Positive current collector (Aluminium) Negative current collector (Copper) Li + conducting electrolyte Page 5

6 Li-Ion Cells Housing Types Cylindrical Cell (Hardcase) Pouch Cell (Softpack) Prismatic Cell (Hardcase) Page 6

7 Automotive Li-Ion Batteries Architecture + Battery = 3~ M BMS Sensors Controls Actuators Typical Li-Ion Battery Cell voltage 2,8V..4,2V Cells in series connection Cells optional in parallel connection to increase capacity Precharge unit and 2 main relays _ Battery Management System (BMS) Necessary to fulfill requirements regarding safety, lifetime and performance Page 7

8 Automotive Li-Ion Batteries Key Success Factors Battery = 3~ M Safety No thermal incidents in field Lifetime > years km > km Quality Small manufacturing tolerances Performance > 5000 W/kg (HEV) > 200 Wh/kg (EV) Cost < 30 $/kw(hev) < 300 $/kwh (EV) Challenges Requirements have to be fulfilled all together Implementation of whole value chain including recycling Build up of infrastructure Commercial Vehicles Requirements regarding lifetime and environmental conditions are more severe than in passenger cars Page 8

9 Automotive Li-Ion Batteries Lifetime Discharge Charge # of cycles Cyclic ageing Calendaric ageing Lifetime, SOH Replacement Break down Calendar time SOC Cell temperature SOC State of Charge, SOH State of Health Page 9

10 Automotive Li-Ion Batteries Lifetime Performance / Performance BOL 1,0 0,8 0,7 t EOL70% 2 t EOL80% Degradation ~ Lifetime Typical EOL definition for passenger car applications EOL definition with doubled lifetime t EOL80% Lifetime t EOL70% Page 10

11 Automotive Li-Ion Batteries Performance, Power to Energy Ratio 160 High Power 5 Ah class P E = 50 P E = 10 Power and Energy 20 Ah class LCV P E = 5 High Energy with optimized power 40Ah class Power [kw] LCV/CV EV Sports Car EV P E = 3 High Energy 60Ah class HEV PHEV (10 mls) PHEV (20 mls) Energy [kwh] Page 11

12 Automotive Li-Ion Batteries HEV Batteries for CV, Examples Battery Specification Medium Power High Power # of High Power cells 160 (80s2p) 320 (160s2p) Nominal voltage 300 V 600 V Maximum voltage 336 V 672 V Maximum current ±400 A ±400 A Usable energy 1.6 kwh 3.2 kwh Peak discharge 10s, 50% SOC 110 kw 220 kw Weight ~85 kg ~150 kg BOL Begin of life SOC State of charge Page 12

13 Automotive Li-Ion Batteries Conclusion 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 Page 13

14 Thank you for your time and attention Page 14