Katech (Lithium Polymer) 4-Passenger NEV - Range and Battery Testing Report

Technical Report · Fri Jul 01 00:00:00 EDT 2005

DOI:https://doi.org/10.2172/910999· OSTI ID:910999

Francfort, J; Karner, D

The U.S. Department of Energy’s (DOE’s) Advanced Vehicle Testing Activity (AVTA) received a Neighborhood Electric Vehicle (NEV) from the Korea Automotive Technology Institute (KATECH) for vehicle and battery characterization testing. The KATECH NEV (called the Invita) was equipped with a lithium polymer battery pack from Kokam Engineering. The Invita was to be baseline performance tested by AVTA’s testing partner, Electric Transportation Applications (ETA), at ETA’s contract testing facilities and test track in Phoenix, Arizona, to AVTA’s NEVAmerica testing specifications and procedures. Before and during initial constant speed range testing, the Invita battery pack experienced cell failures, and the onboard charger failed. A Kokamsupplied off-board charger was used in place of the onboard charger to successfully perform a constant speed range test on the Invita. The Invita traveled a total of 47.9 miles in 1 hour 47 minutes, consuming 91.3 amp-hours and 6.19 kilowatt-hours. The Kokam Engineering lithium polymer battery was also scheduled for battery pack characterization testing, including the C/3 energy capacity, dynamic stress, and peak power tests. Testing was stopped during the initial C/3 energy capacity test, however, because the battery pack failed to withstand cycling without cell failures. After the third discharge/charge sequence was completed, it was discovered that Cell 6 had failed, with a voltage reading of 0.5 volts. Cell 6 was replaced, and the testing sequence was restarted. After the second discharge/charge sequence was complete, it was discovered that Cell 1 had failed, with its voltage reading 0.2 volts. At this point it was decided to stop all battery pack testing. During the discharge cycles, the battery pack supplied 102.21, 94.34, and 96.05 amp-hours consecutively before Cell 6 failed. After replacing Cell 6, the battery pack supplied 98.34 and 98.11 amp-hours before Cell 1 failed. The Idaho National Laboratory managed these testing activities for the AVTA, as part of DOE’s FreedomCAR and Vehicle Technologies Program.

• Research Organization: Idaho National Laboratory (INL)
• Sponsoring Organization: DOE - EE
• DOE Contract Number: AC07-99ID13727
• OSTI ID: 910999
• Report Number(s): INL/EXT-05-00479
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AVAT
CAPACITY
KATECH
LITHIUM
lithium polymer
NEV
PEAK LOAD
PERFORMANCE
POLYMERS
SPECIFICATIONS
TESTING
VELOCITY