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EV Batteries: Development and Testing
- 1. EV Batteries: Development andDiagnostics Food for Thought on: By Shubham Mishra Chief Experimenting Officer at Battery-Ok Technologies BatteryOk Technologies
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- 4. Li-ion & itstypes: 150–220 Wh/kg, 1000-2000 cycles, $150 -200/kWh, MEDIUM SAFETY Lithium Nickel Manganese Cobalt Oxide (NMC) U S E D I N I N D U S T R I E S , E V S , M E D I C A L D E V I C E S 90–120 Wh/kg, 2000-3000 cycles, $180-200/kWh, HIGH SAFETY Lithium Iron Phosphate (LFP) U S E D I N H E A V Y D U T Y E V S , P O R T A B L E E L E C T R O N I C S BatteryOk Technologies
- 5. Li-ion & itstypes: 100–150 Wh/kg, 300-1000 cycles, $200-230/kWh, MEDIUM SAFETY Lithium Manganese Oxide (LMO) U S E D I N P O W E R T O O L S , M E D I C A L D E V I C E S , M I L D E V S 150–240 Wh/kg, 500-1000 cycles, $200-250/kWh, LOW SAFETY Lithium Cobalt Oxide (LCO) U S E D I N L A P T O P S , C A M E R A S , M O B I L E P H O N E S BatteryOk Technologies
- 6. Li-ion & itstypes: 50–80 Wh/kg, 3000-7000 cycles, $800-1000/kWh, HIGH SAFETY Lithium Titanate (LTO) U S E D I N U P S , E S S , H I G H E N D E V S BatteryOk Technologies
- 7. BUYING LITHIUM BATTERY ?? ASKABOUT THESE. Battery Warranty? Check Battery Dimensions Type (LFP or NMC), Company of cells ? No. of cycles, cost/kWh ? Exact Voltage & battery capacity ? Company certifications, compliances ? IP rating of battery casing ? Service and replacement policy ? BatteryOk Technologies
- 8. LFP CELLS OUTPERFORM NMC MAXNO. OF CYCLES KEY MAKERS KEY MAKERS LFP NMC 2000 1000 Source: Sandia National Labs BatteryOk Technologies
- 9. Li-ion Na-ion Cost Energy Density Safety Materials Temp.Range Handling HighLow High Moderate Low High Rare Abundant -25 °C to 40 °C -40 °C to 60 °C Difficult Easy Big Fight : Lithium ion vs Sodium ion Source: Wikipedia BatteryOk Technologies
- 10. Design of BatteryPacks: let’s use Samsung 18650 3.7V 2.6Ah( 2600mAh) for example. BatteryOk Technologies
- 11. Design of BatteryPacks: BatteryOk Technologies
- 12. Design of BatteryPacks: BatteryOk Technologies
- 13. Design of BatteryPacks: BatteryOk Technologies
- 14. Design of BatteryPacks: BatteryOk Technologies
- 15. Design of BatteryPacks: BatteryOk Technologies
- 16. What is BYD'sBlade Battery? & Why its a Game Changer? Large specific surface area: Easy Heat Dissipation Lower chances of short ckts. No oxygen is released during thermal runaway. 50% increase in Vol. Energy density (Mostly using space optimization) 3000+ cycles and 1.2 million km life. Lower cost: ~$85/kWh BatteryOk Technologies
- 17. DiagnosingBatteries: BatteryOk Technologies 1. Visual Inspection: Examinethe battery pack for physical damage, such as dents, leaks, or corrosion. Check for loose connections, damaged wiring, or any signs of overheating.
- 18. DiagnosingBatteries: BatteryOk Technologies 2. Test thePack Before handling more, diagnose the battery pack with EV Doctor or equivalent systems to get idea about the Battery Health, Risk levels and other crucial parameters.
- 19. DiagnosingBatteries: BatteryOk Technologies 3. Check stringvoltages Moving ahead, check the string voltages to infer to the outcomes. Ensure the parallel voltages are matching impeccably.
- 20. DiagnosingBatteries: BatteryOk Technologies 4. Balancing thecells Check the voltage of each individual cell in the battery pack. Significant variations in cell voltage can indicate imbalances or a faulty cell. Balancing may be necessary to equalize the charge across all cells.
- 21. DiagnosingBatteries: BatteryOk Technologies 5. Repack andTest Again After replacing the cells with appropriate ones, make sure the IR and V levels are matching it. (Do Thermal tests if required) Afterward, repack and test the battery again with EV Doctor or equivalent systems.
- 22. DiagnosingBatteries: BatteryOk Technologies 6. Consult Manufacturer Documentation: Referto the vehicle and battery manufacturer's documentation for specific diagnostic procedures and recommended maintenance practices.
- 23. They say, we'renearing Human Extinction BatteryOk Technologies The Biggest RISK
- 24. But some ofus will survive... BatteryOk Technologies
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- 30. TheReal,Why Internal Shortcircuit External Shortcircuit Overchargingand over-discharging High Temperature exposure Mechanical abuse BatteryOk Technologies
- 31. TheMarket,Why Design methods Quality concerns Lackof knowledge, skills. Extreme conditions BatteryOk Technologies
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- 38. Why EVerybody is usingthis? BatteryOk Technologies
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- 40. CDC/CYCLERS EV DOCTOR Easyto Use Time Taken Checks health Power For Use 10-12 hours 15 Min 10X X Data Driven Water Damage Insights BMS Status Shows Capacity BatteryOk Technologies
- 41. How EV DoctorWorks EV Doctor takes just a few minutes to analyze whether the battery is capable of delivering the claimed performance and reliability. EV Doctor Based on the available charging data points, the scan determines the voltage profile and DCIR of the battery. Before EV Doctor, the diagnosis took several hours, now it's just a few minutes. EV Doctor predicts the crucial parameters of the battery such as Battery Health, Risk levels, SoC, AH, etc. using state space battery models and ML algorithms. These results later on will be leveraged during QC, Service, and Repair. Right from manufacturing to recycling, EV Doctor is a versatile battery diagnostic solution that helps during manufacturing, dispatch, service, repair, repurposing or recycling it takes care of all touchpoints. BatteryOk Technologies
- 42. Shubham Mishra shubham@evegalabs.com Lets Makea Difference. Thanks.