Download EV Benchmarking

Electric Vehicle Benchmarking
S
outhwest Research Institute® (SwRI®) is initiating a
benchmarking program for the new generation of electric
vehicles. With more than 60 years of experience serving
the automotive industry, SwRI has the in-depth expertise, broad
experience, and extensive facilities and equipment required to
evaluate and benchmark new vehicle technologies. Competitive
vehicle benchmarking is a standard practice among vehicle
manufacturers and has great value for evaluating state-of-the-art
technologies.
Tesla Model D Inspection and Instrumentation
D019818
The next electric vehicle to be evaluated at SwRI is the Tesla
Model D with all-wheel drive and two drive motors. The vehicle and
battery pack will be heavily instrumented to gather in-depth data
pertaining to on-road vehicle baseline performance and chassis
dyno laboratory testing. A variety of vehicle battery parameters
will be mapped to provide insight into the battery management
system (BMS). Results of this project will be provided to each
program member.
Cold box evaluation on dynamometer
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• Vehicle inspection
◦◦ Powertrain layout
◦◦ Battery pack layout (modules, cells, sensors)
◦◦ Cooling system
◦◦ Physical layout of power electronics and switching
◦◦ Wiring and diagnostic port locations
◦◦ Compatibility with aftermarket diagnostic reader devices
◦◦ Owner manuals
• Vehicle and pack instrumentation
◦◦ Pack-level current, voltage and temperature
◦◦ Contactor switching
◦◦ Module-level current, voltage and temperatures based on
series/parallel configurations
◦◦ Cooling system operation (flow, temperature, pump power)
◦◦ Current, voltage and temperature across electrical junctions
Tesla Model D Testing
• Baseline (accelerations, regenerative braking, constant speed,
coast-down, creep, etc.)
• Break-in (settling of adaptive calibrations)
• Static capacity sweep across temperatures and currents
• Pulse power sweep across temperatures
• Continuous power
Vehicle charging port
• Open circuit voltage mapping
• Range testing per EPA standards
• Range testing under various driving cycles
• Storage testing (self-discharge rate, battery
thermal management, etc.)
• Charge testing (110, 240 and supercharger)
Southwest Research Institute technology data sheet
Battery pack instrumentation
Program Deliverables
multiple tests
◦◦ Charge and discharge battery pack
management strategy across multiple tests
◦◦ Binary and ASCII files on ftp site as data is
being generated
◦◦ Component photographs
◦◦ Conclusions
+
-
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modes of operation
◦◦ Envelope of battery operation across
Coolant fow
• Data sets
• Final report
◦◦ Event and trend analysis across different
Thermocouples
Current sensors on pack
Voltage sensors on series strings only
Subscriber Benefits
• Data sets and the final report will be provided
to all subscribers of this benchmarking
program.
• Program subscribers obtain benchmarking data
at a fraction of the cost of in-house testing or
individual purchase.
• SwRI can present benchmarking data on site
or subscribers may visit SwRI’s facilities in San
Antonio, Texas, to test drive program vehicles.
SwRI Office
of Automotive
Engineering
• Certified to ISO
9001:2008, Quality
Management Systems –
Requirements
• Accredited to ISO/IEC
17025:2005, General
Requirements for the
Competence of
Testing and Calibration
Laboratories
We welcome your inquiries.
• Certified to ISO
If you are interested in becoming an early
subscriber or would like additional information,
please contact:
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Dustin Kramer
Senior Research Engineer
Energy Storage Technology
(210) 522-3843
[email protected]
14001:2004,
Environmental
Management Systems
Inspection and instrumentation of battery packs
electricvehiclebenchmarking.swri.org
electricvehiclebenchmarking.swri.org
swri.org
Southwest Research Institute is an independent, nonprofit, applied engineering and physical sciences research and development organization using
multidisciplinary approaches to problem solving. The Institute occupies 1,200 acres in San Antonio, Texas, and provides more than 2 million square feet of
laboratories, test facilities, workshops, and offices for nearly 3,000 employees who perform contract work for industry and government clients.
Southwest Research Institute • 6220 Culebra Road • PO Box 28510 • San Antonio, TX 78228-0510
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SwRI Business Development  San Antonio, Texas  (210) 522-2122  [email protected]
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