4 2016 NASA Battery Workshop - Ten Year Evaluation of ...
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POWERED by Ten Year Evaluation of Eight Series Test Module Utilizing EnerSys QL015KA Li-Ion Cell Launchers Satellites Manned Interplanetary & Landers Authors: Hiroshi Nakahara, Ryo Tamaki, Blake Cardwell, Grant Farrell, Kevin Schrantz, Ben Scott 2016 NASA Battery Workshop November 15 th – 17 th
Transcript of 4 2016 NASA Battery Workshop - Ten Year Evaluation of ...
POWERED by
Ten Year Evaluation of Eight Series Test Module Utilizing EnerSys QL015KA Li-Ion Cell
Launchers Satellites Manned Interplanetary & Landers
Authors: Hiroshi Nakahara, Ryo Tamaki, Blake Cardwell, Grant Farrell, Kevin Schrantz, Ben Scott
2016 NASA Battery Workshop November 15th – 17th
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EnerSys Proprietary © 2014 EnerSys. Export or re-export of information contained herein may be subject to restrictions and requirements of U.S. export laws and regulations and may require
advance authorization from the U.S. government.
Outline: Electrical and thermal characterizations of QL015KA 8S-1P Module* under 20% DoD LEO cycling for 85,860 cycles
• Introduction to EnerSys Advanced Systems (EAS)
• Battery and Test Setup
• Electrical Characterization
• Thermal Characterization
• Summary
• Next Steps
* No cell balancing circuit, no balancing activity during LEO cycling
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EnerSys Proprietary © 2014 EnerSys. Export or re-export of information contained herein may be subject to restrictions and requirements of U.S. export laws and regulations and may require
advance authorization from the U.S. government.
$100M Division Consisting of 6 Business Units • Space
− Launch Vehicles − Satellites − Manned − Interplanetary & Landers
• Aviation − Fixed Wing & Rotary Aircraft including F16/18 & 777 − UAV‘s & Target Drones
• Munitions − Missiles & Smart Weapons − Guided Bombs & Projectiles − Electronic Fusing
• Land − Combat, Tactical & Unmanned Ground Vehicles − Microgrids & Forward Operating Bases
• Sea − Submarines − Unmanned Underwater Vehicles
• Medical − Cochlear Implant Speech Processors − Neromodulation − Pumps
Space
Aviation
Sea
Medical
Land
Munitions
EnerSys Advanced Systems
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EnerSys Proprietary © 2014 EnerSys. Export or re-export of information contained herein may be subject to restrictions and requirements of U.S. export laws and regulations and may require
advance authorization from the U.S. government.
EnerSys Advanced Systems EAS Manufacturing Facilities • Sylmar, CA • Santa Clarita, CA • Longmont, CO • Warrensburg, MO • Horsham, PA • Tampa, FL • Culham Oxfordshire, UK • Newport, UK • Zwickau, DE
EnerSys Headquarters: Reading, PA (US Owned Company)
Product Line Brands Technology Main Manufacturing Locations
Space ABSL/Quallion Lithium-Ion Materials, Cells & Batteries Longmont CO, Sylmar CA, Culham UK
Medical Quallion Lithium-ion Cells & Batteries Sylmar CA
Munitions EAS, Enser Lithium Primary/Liquid Reserve Horsham PA, Tampa FL
Land & Sea Hawker/Armasafe Lead Acid (Thin Plate), NiZn Warrensburg MO, Zwickau DE
Aviation Hawker/Quallion Lead Acid (Thin Plate), Ni-Cd & Lithium-ion
Warrensburg MO, Sylmar CA, Newport UK, Zwickau DE
Facility Locations
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advance authorization from the U.S. government.
Parameter Value
Height / mm 89.0
Width / mm 54.5
Thickness / mm 37.5
Weight / g 445
Operating voltage / V 2.7 – 4.1
Discharge capacity / Ah 14.5*
Weight energy density / Wh/kg 117
Volumetric energy density / Wh/l 287
Zero-Volt™ technology Applicable
* Discharge at C/2, 25oC
QL15KA Cell Characteristics
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advance authorization from the U.S. government.
Cell type QL015KA
Configuration 8 cells in series
Capacity 15 Ah
Voltage 21.6 – 32.8 V
Dimension 89 x 54.5 x 304 mm
8-QL015KA-Cell Series Battery Module
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advance authorization from the U.S. government.
Cell No. -- 1 2 3 4 5 6 7 8
1
2
3
4
5
6
9
7
8
To battery tester (+) To battery tester (-)
Thermocouple In battery: 9 ea. Ambient: 1 ea.
Blue: Negative Terminal
Cell Index & Thermocouple Locations
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advance authorization from the U.S. government.
20% DoD Accelerated LEO Cycle Test Protocol • Charge:
• Constant Current Charge: Charge at 9A until any individual cell reaches 4.1V
• Constant Voltage Charge: Charge at the last battery voltage recorded when first individual cell hits 4.1V
• Total Charge Time: 27.5min
• Discharge: • Constant Current Discharge: Discharge at 10.3A for
17.5mins (3Ah = 20% DoD)
• Temperature: 30°C
• No Rest between charge and discharge steps
• 45 mins for each cycle
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Electrical Characterization Ø Cell / Battery Voltage Change
Ø Battery Discharge Capacity & Energy
Ø Difference of Voltages at End of Discharges
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Module EOD Voltage and Battery Discharge Energy
85,860 cycles (118 months)
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Module and Cell Voltage vs. Time During LEO Cycling
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Consistent cell voltage through 85,860 cycles (for 118 months duration)
Battery Voltage
Module and Cell Voltage at End of Discharge
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advance authorization from the U.S. government.
Cell Voltage Difference & Battery Voltage at EOD
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advance authorization from the U.S. government.
Module and Cell DC Resistance
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Spring preload 15~20 lbs-in QL015KA cell
~0.5mm increase in 10 years (0.5% increase in thickness) Starting at 110mm in 2006
Today, 110.5mm in 2016
Swelling after 10 Years
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advance authorization from the U.S. government.
20% LEO Cycling: Capacity Retention Prediction
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advance authorization from the U.S. government.
2006 Initial, 100%
2007 6,201 cycles, 98.4%
2007 13,327 cycles, 95.4%
2013 61,870 cycles, 83.7%
2016 85,860cycles, 81.4%
2016
10 Year LEO Cycling: Discharge Curves
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Thermal Characterization Ø Temperature Profile During Cycling
Ø Maximum Temperature Difference with Each Cycle
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advance authorization from the U.S. government.
Incubator Temp
Temp and Voltage Profile
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advance authorization from the U.S. government.
Maximum temperature difference = 2.72 oC
Maximum Temperature Difference Within Each Cycle
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advance authorization from the U.S. government.
Electrical and Thermal Characterization Summary
• Battery demonstrated consistent performance through 85,860 cycles (118 months)
• Cells have shown consistent characteristics during testing
• Electrical: • Module maintained 81.4% capacity after 10y evaluation under
20% DoD Accelerated LEO Cycling • 54mV cell voltage difference at 85,860th cycle • 26% DC resistance increase after 10 years to 73.2mOhms • No charge balancing performed on the battery
• Thermal:
• 2.72°C Maximum cell temperature difference after 85,860 cycles
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EnerSys Proprietary © 2014 EnerSys. Export or re-export of information contained herein may be subject to restrictions and requirements of U.S. export laws and regulations and may require
advance authorization from the U.S. government.
QL075KA 8S module demonstrated the same performance to QL015KA Module
Next Steps: QL075KA 8s Module under 20% LEO Cycling
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EnerSys Proprietary © 2014 EnerSys. Export or re-export of information contained herein may be subject to restrictions and requirements of U.S. export laws and regulations and may require
advance authorization from the U.S. government.
Contacts: Business Development:
• Ben Scott, Longmont, CO, +1-720-438-4822, [email protected]
• Roger Carlone, Longmont, CO, +1-303-848-8042 [email protected]
Technical:
• Hiroshi Nakahara, Sylmar, CA, +1-818-833-2016, [email protected]
• Ryo Tamaki, Sylmar, CA, +1-818-833-2028, [email protected]
• Grant Farrell, Sylmar, CA, 818-833-2004, [email protected]
• Blake Cardwell, Longmont, Co, +1-303-848-8047, [email protected]
