Breaking Lithium-Ion Market Barriers: Safety and Total Cost of Ownership Dr. Tomasz Poznar 1
Storing Energy = Risks Risks are presents in all energy storage systems Storing energy always poses inherent dangers Storing large amounts of energy in a small space upsets the natural equilibrium The captured and contained energy must be managed in a controlled manner to ensure the system performs reliably and safe Care. Monitor. Manage. EnerDel s approach to Lithium-Ion Energy Storage Safety. Page 2
Safety begins at the cell level Carefull selection of components improve safety Cathode (Nickel Manganese Cobalt) The NMC used by EnerDel is safer than LCO Thermal runaway onset 50 C higher than LCO Anode (Hard Carbon) Better power density than graphite Better tolerance to degradation reactions Prevent dendrite formation Electrolyte (LIF P 6 ) All Li-ion electrolyte is flammable, EnerDel minimizes electrolyte usage Page 3
Safety begins at the cell level Cell design Side Tab construction Minimize the chance of shorting Higher current, less temperature rise due to size Thinner tab cross-section = robust sealing Plated tabs resist corrosion = less heat, longer life Laminate Package Aluminum foil laminated between layers of electrically insulating polymers Risk of shorting to the case is low Separator Z-fold winding immobilizes electrodes Page 4
Product Desigh Philosophy System Architecture Break system into discrete cells of the appropriate capacity mitigates thermal runaway Module design and cell packaging Allow cells to expand and contract during charge/discharge cycles Stabilizes Anodes and Cathodes layers within the cell Connections All power buss connections utilizing mechanical fasteners are applied using dynamic/close loop torque control Thread locker on criticl HV bussing No loose connection in thousands of fielded modules Fire suppression system Fully autonomous, independent from BMS Page 5
Sophisticated BMS Battery Managemenet Sysytem is the brains of the operation Coordinates information from: Each cell Contactors Current Sensors End user inputs Continually monitors and adjusts the operation of the battery Redundant Features mandated to reduce possibility of thermal runaway Page 6
Total Cost of Ownership Much more than just a purchase cost Integration and commisioning Documentation Warranty Post-warranty Recycling Replacement and system redesign Downtime Recycling Second Life Technical Support Warranty & GRV The Total Cost of Ownership is a key factor influencing electric and hybrid vehicles investment Post Warranty Page 7
EnerDel s Aftermarket Offerings EnerDel OE Products Non-EnerDel Products Independent Aftermarket Second Life Applications Integration Support Warranty Service Integration Support Warranty Service Non-Warranty Services Extended Warranty Programs Technical Trainings Technical Trainings LD/HD Product Line GES Product Line GRV GRV Spare Parts Spare Parts Recondition and Remanufacture Recycling Page 8
Design for Servicability Unique cell level servicability Fasteners vs. welding Significantly lower repair cost Easier spare parts administration and greater availability Remanufacturing and reconditioning On-site repairs Backwards compatibility Page 9
TCO Comparison $125.000 $115.000 $105.000 $95.000 $85.000 $75.000 $65.000 EnerDel Service & Maintenance Program EnerDel Standard 3yr Warranty EnerDel Extended Warranty Domestic Competitor Low Cost Competitor $55.000 $45.000 $35.000 $25.000 $15.000 $5.000 -$5.000 -$15.000 Page 10
Summary Lithium-Ion batteries are an ideal energy storage solutions high energy and high power combination high cycle times long calendar life low mass high energy efficiency Safety is EnerDel s first and foremost consideration Unique EnerDel s aftermarket approach offers the lowest Total Cost of Ownership Page 11
Thank you! For more information please contact author at tomasz.poznar@enerdel.com About EnerDel EnerDel, Inc. is a privately-held company headquartered in Indianapolis, IN. It manufactures advanced lithium-ion batteries and energy storage systems for electric utility, transportation and industrial applications. The company s prismatic cell design and modular stacking architecture combine to provide customers with production-ready solutions that address their power and energy storage needs. EnerDel s unique Guaranteed Residual Value (GRV) program offers customers a lower total cost of ownership (TCO) over the system s life. For additional information, visit www.enerdel.com. Page 12