SB LiMotive Automotive Battery Technology. Kiho Kim

Transcription

1 SB LiMotive Automotive Battery Technology Kiho Kim

2 Contents Introduction Li Ion Cell Technology Page 2

3 Introduction to SBLiMotive Page 3

4 SBL Product Portfolio Cell & Module Cooling System BMS Hardware BMS Software Pack Page 4

5 Technology Leadership R&D Capability, MFG Quality & Cost World Class Competitiveness in R&D, MFG Quality & Cost World Class R&D No.1 MFG Quality Cost Competitiveness 1 st Class Patent Position 10 yrs MFG Experience Strong Sourcing Power High Quality R&D Man-Power In-house Designed Facility Investment in Mines 20 yrs R&D Experience Real-time Monitoring Sourcing Diversities - 7 / 13 -

6 Technology Leadership Safety of Li-ion Battery Perfect safety can be achieved through collaboration between automobile and cell manufacturers Cell Design Technology Cell Manufacturing Technology Vehicle Technology Material Safety Component Metal Impurity Control Real-time monitoring & 100% traceability Mechanical Support Safety Features in Control System Page 6

7 Li Ion Cell Technology Page 7

8 Cell Product Portfolio Item Unit 5Ah 20Ah 24Ah 40Ah 60Ah Nominal Capacity Ah Discharge Power Capability W Power to Energy ratio W/Wh Size mm (L*W*H) 120x12x80 173x21x85 148x26.5x91 173x32x x45x125 Page 8

9 Cell Chemistry Item Material Cathode active material NCM Anode active material Electrolytes Separator Graphite EC based composite electrolyte with LiPF 6 and functional additives Porous poly-olefin film Binder Poly-vinylidene di-fluoride for cathode Styrene butadiene rubber & CMC for anode Page 9

10 5Ah HEV Cell Performance Summary Description Peak power (10sec SOC50% by HPPC method) Specific power (10sec SOC50%) Peak discharge power (@ 10sec, SOC 35% by HPPC method) Peak charge power(@ 10sec, SOC 65% by HPPC method) Continuous power by HPPC method) Performance 1 min. 890 W 4100 W/kg, 7700 W/L 1 min. 700 W 1 min. 550 W 1 min. 430W at 30sec 1 min. 245W at 120sec Capacity o C) min. 5.2 Ah Voltage (Upper limit / Nominal / Lower limit) 4.2 / 3.7 / 2.8 Specific energy o C) Cold crank (3cycle, SOC50%, 5 o C, CV : 2.1V, by VDA manual ) Power retention rate at the end of cycle life - VDA cycle (Screening pattern) : Stress acceleration (ΔSOC 50%) Power retention rate at the end of calendar life (@SOC60%, 45 C) 90 Wh/Kg 170 W 262kAh discharge capacity 25 C, 80% power retention 12 80% power retention Page 10

11 20 Ah PHEV Cell Performance Summary Minimum Capacity C) Description Specific energy and energy density ( 25 C ) Performance 20.5Ah 116 Wh/kg, 250 Wh/L Voltage (Upper limit / Nominal / Lower limit) 4.1 / 3.7 / 2.7 Peak power Discharge 10sec discharge SOC50% 1600W Charge 10sec charge SOC50% 1000W Specific power and power density SOC50%) 80% of power and capacity retention 1 Charge, 1C Discharge, SOC0%-SOC100%, 25 C ) Capacity retention rate at the end of calendar life SOC100%, 25 C) 2400 W/kg, 5200 W/L Test under progressing 4,000 cycles estimated@ 80% of BOL Test is progressing 80% of >15 yr Operating temperature range -30 C ~ 60 C Page 11

12 24 Ah PHEV Cell Performance Summary Description Performance Minimum Capacity (1 C) 24.0 Ah Nominal Capacity (1 C) 24.5 Ah Specific and volumetric energy density ( 1 25 C ) 126 Wh/Kg, 257 Wh/L Voltage (Upper limit / Nominal / Lower limit) 4.2 / 3.75 / 2.8 Power capability Discharge 10sec discharge SOC 50%, 25 C 1700 W Charge 10sec charge SOC 50%, 25 C 1000 W Specific power density SOC 50%, 25 C) 2300 W/kg Cycle 80% of power and capacity retention 1C Charge, 1C Discharge, SOC 0%-SOC 100%, 25 C ) Test under progressing 4,000 cycles estimated@ 80% of BOL Calendar life (@ SOC 100%, 25 C) Test in progress >80% of 15 yrs Operating temperature range -30 C ~ 60 C Page 12

13 40 Ah PHEV/EV Cell Performance Summary Description Performance Minimum Capacity C) 40Ah Nominal Capacity C) 42Ah Specific and volumetric energy density ( 1 25 C ) 113 Wh/Kg, 227 Wh/L Voltage (Upper limit / Nominal / Lower limit) 4.1 / 3.75 / sec SOC50% 3200W Discharge Power capability 10sec SOC 20% 2100W Charge 10sec SOC 80% 320W Specific power 2250W/Kg Cycle 80% of power and capacity retention (@ 0.7 Charge, 1C Discharge, SOC0%-SOC100%, 25 C) Calendar life (@ SOC100%, 25 C) Test under progressing 4,000 cycles estimated@ 80% of BOL >80% of 15yrs Operating temperature range -30 C ~ 60 C Page 13

14 60 Ah EV Cell Performance Summary Minimum Capacity C) Nominal Capacity C) Description Performance 60Ah 62Ah Specific and volumetric energy density 25 C) 123 Wh/Kg, 243 Wh/L Voltage (Upper limit / Nominal / Lower limit) 4.1 / 3.75 / 2.8 Power capability Discharge Specific power Cycle 80% of power and capacity retention (@ 0.7 Charge, 1C Discharge, SOC0%-SOC100%, 25 C) Calendar life (@ SOC100%, 25 C) 10sec 10sec SOC 20% 4200W 3000W Charge 10sec SOC 80% 450W 2100W/Kg Test under progressing 4,000 cycles estimated@ 80% of BOL Test in progress >80% of 15yrs Operating temperature range -30 C ~ 60 C Page 14

15 5Ah HEV Cell Technology Page 15

16 HEV Cell Mechanical Design Dimension (W X H X T) Volume Weight Can polarity 120 mm X 80 mm X 12 mm without terminals 115 ml, without terminals 220 g, with terminals Positive Terminal materials Cell to cell connection Aluminum for positive Copper for negative Screw type or Welding type Page 16

17 HEV Cell HPPC Peak Power Capability vs. Temperature Power (W) State of charge 30% 50% 70% 45 C Dis C Regen C Dis W/kg W/kg W/kg 25 C Regen C Dis C Regen C Dis W/kg W/kg W/kg * Limit conditions -30 C Regen Charge Voltage All temp. = 4.2V 0 C and above = -10 C = -30 C = 7.5A Discharge Voltage -20 C and above = -30 C = -10 C and above = -30 C = 10A Page 17

18 HEV Cell HPPC 10 sec. Resistance vs. Temperature 10s Discharge DC-IR (mω) State of charge 30% 50% 70% 10s Charge DC-IR (mω) State of charge 30% 50% 70% 45 C C C C C C C C C C C C Page 18

19 HEV Cell Energy Efficiency Test conditions for energy efficiency 10 sec constant current discharge and charge at SOC50%, 25 Current (A) Energy Efficiency (%) Page 19

20 Watt, W Watt[W] Voltage, V Current, A HEV Cell Cold Cranking Power Cold-cranking power at -30 and SOC 50% : 170 W/cell if 72 cell/pack, 12kW Test conditions - Temperature = -30, SOC = 50% - Pattern ; 2.1V CC-CV discharge for 5sec, 3cycles in VDA manual st st 2nd nd 3rd Time[sec.] Time, sec V 3.591V 3.546V 3.520V Time, sec Page 20

21 Cell Voltage, V HEV Cell Cycle Life, VDA cycle pattern VDA pattern (I_rms analysis = 33.3A, SOC swing = 3 bands ; 30-50%, 45-65% & 60-80%) Charge Discharge Expected voltage profiles under VDA cycling at each starting SOC% VDA unit cycle time, sec SOC80% start SOC65% start SOC50% start Duration time Sec Cumuative time Sec Current C rate Page 21

22 HEV Cell Cycle Life, VDA cycle pattern Temp. Progress (Discharge kah) Estimated Discharge throughput to 80%of BOL HPPC Power Capacity 25 o C kah kah (676 k-miles) kah 35 o C kah kah kah 55 o C kah kah (136 k-miles) kah *60 kah discharge capacity = k-mile mileage 10sec Discharge HPPC Power 1C Capacity retention Page 22

23 HEV Cell Cycle Life, US06 US06 pattern analysis US06 Pattern Profile Test Cycle pattern (Cell) Cell temperature US kw o C 35 condition Battery Size Factor (BSF) # 72 Pattern analysis Max. peak power Max. peak current Charge 478 W Discharge -418 Charge 125 A Discharge -118 Open time in cycle sec 0(0%) Total I rms A 42.8 Discharge I rms A 30.5 Operating SOC range Charge I rms A 60.8 Starting SOC 50% Max. SOC 57% % Min. SOC 42% ΔSOC 7% Cycle running time per cycle sec 600 Capacity throughput per cycle Ah 2.132(Dch) Page 23

24 HEV Cell Cycle Life, US06 Power and Capacity show 90% and 86% retention until 39.8kAh discharge capacity throughput. 10sec Discharge HPPC Power 1C Capacity retention Page 24

25 HEV Cell Calendar Life Storage Condition SOC30% SOC40% 25 C 35 C 45 C 60 C SOC60% SOC80% 400 days being stored SOC90% SOC100% Page 25

26 HEV Cell Calendar Life, Stress Mapping Acceleration Factor The green color in the table is satisfied over 10 years of calendar lifetime until EOL (= 80% of BOL Power capability). Temp. ( o C) Life Estimation (Years, 80% of BOL) SOC 30% SOC 40% SOC 60% SOC 80% SOC 90% 25 > 50 > 50 > 50 > 50 > Page 26

27 HEV Cell Calendar Life, SOC 60%, 35 o C & 60 o C Power retention & DC-IR Capacity retention Page 27

28 HEV Cell Shelf Life, Capacity retention, 12 months Capacity SOC 35% Capacity SOC 50% Page 28

29 HEV Cell Shelf Life, Capacity recovery, 12 months Capacity SOC 35% Capacity SOC 50% Page 29

30 HEV Cell Shelf Life, HPPC power - 10sec discharge, 12 months Power SOC 35% Power SOC 50% Page 30

31 HEV Cell Abuse Test Result, Single cell Items Test Condition Hazard Level* Mass Loss(%) Remarks Crush SOC100%, 3-axis Crush to 85% of cell height L2 0% No venting External Short SOC100%, 2mΩ external resistor L2 0% No venting Thermal Stability SOC100%, 5 /min, 100 ~250 L4 50% No venting Nail Penetration SOC100%, 3mm diameter, 80mm/sec L4 50% Venting Hot Plate Propagation SOC100%, 0.6 /min, 1hr 300 L4 50% No venting Overcharge SOC100%, 32A, 12V limit & 2hr L3 < 50% Venting Overdischarge SOC100%, 1C/2C/6C-rate, 1.5 hr L2 0% No venting Overdischarge - Recharge SOC100%, 1C Discharge to 0.5V L0 0% No effect * The hazard level was based on EUCAR level of Freedom-CAR SAND Page 31

32 HEV Cell Abuse Test Result, Module (12cells & 6cells) Test Items Quantity Test Conditions Hazard Level* Mass Loss [%] Remark Crush (12 Cells) Y axis 1 L3 < 50% No venting 1 st Step) crush to 85% of cell height 2 nd step) crush by force of mass*1000 Z axis 1 L3 < 50% No venting Overcharge (12 Cells) 1C-rate 1 1C-rate, Vmax & SOC200% end L3 < 50% No venting 32A 1 32A, Vmax & SOC200% end L3 < 50% No venting Nail penetration (6 Cells) 1 20mm diameter, 80mm/sec more 3 cells were penetrated L4 50% Venting External short (6 Cells) 1 1mΩ resistor & 20min holding L2 0% No venting * The hazard level was based on EUCAR level of Freedom-CAR SAND Page 32

33 HEV Cell Environmental Test Result, Single cell Items Quantity Test condition 1C-Discharge Capacity Results ( vs. BOL, % ) Discharge Power at SOC 50% Charge Power at SOC 50% Thermal Shock 3 Temp. swing range : Dwell time : 60 min Cycle number : 5 Test SOC : 50% 99.9% 99.3% 98.4% Storage Temperature Range 3 Temp. swing range : Dwell time : 72 hrs Test SOC : 50% 95.2% 93.4% 92.8% Vibration 3 1 st step) 2,000 sinusoidal cycles, 5G in 10~30Hz 2 nd step) sine sweep in Hz, 1Hz /s for 6 hrs Test SOC : 50% 99.9% 100.0% 99.7% Mechanical Shock 3 Shock number : Total 18# (3 shocks per direction per axis) Acceleration : 100g Duration time : 11m/sec. Test SOC : 50% 99.9% 97.8% 96.3% Page 33

34 Thank you for your time & attention