Evaluation of electric vehicle battery systems through in-vehicle testing: Fourth annual report: Final report

Technical Report · Thu Jun 01 04:00:00 EDT 1989

OSTI ID:5985224

Whitehead, G D; Blickwedel, T W

This fourth annual summary report documents the tests performed from October 1987 through September 1988 in EPRI's ongoing project to evaluate and compare the performance of near-term electric vehicle traction battery packs in a real-world operating environment. Detailed test procedures and test data are available from EPRI in an informal data report. Testing includes initial acceptance testing of battery components and systems, daily in-vehicle operation of the batteries, monthly in-vehicle driving range tests, and periodic static (constant current) discharge tests under computer control. Battery performance data is typically presented on the basis of calculated specific energy output on a controlled discharge test versus accumulated vehicle/battery miles, and also on the vehicle driving range over fixed operating cycles such as the SAE J227a ''C'' cycle and at 35 mi/h constant speed. Other operating parameters, such as battery thermal characteristic and battery maintenance requirements (water addition), are monitored and reported. Battery modules in the pack are replaced when their measured ampere-hour capacity at a fixed discharge rate drops to 60 percent of the manufacturer's rated value. The life of a test battery pack is terminated when 25 percent of the modules in the pack have been replaced or require replacement. During this reporting period four lead-acid batteries completed life testing. 18 figs., 8 tabs.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); Electrotek Concepts, Inc., Chattanooga, TN (USA). Electric Vehicle Test Facility
• OSTI ID: 5985224
• Report Number(s): EPRI-CU-6330
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250900* -- Energy Storage-- Batteries
33 ADVANCED PROPULSION SYSTEMS
330300 -- Advanced Propulsion Systems-- Electric-Powered Systems
330400 -- Advanced Propulsion Systems-- Hybrid Systems
CHLORIDES
CHLORINE COMPOUNDS
COMPARATIVE EVALUATIONS
DATA
DOCUMENT TYPES
EFFICIENCY
ELECTRIC BATTERIES
ELECTRIC-POWERED VEHICLES
ELECTROCHEMICAL CELLS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
IRON-NICKEL BATTERIES
LEAD-ACID BATTERIES
MAINTENANCE
METAL-METAL OXIDE BATTERIES
NUMERICAL DATA
PERFORMANCE TESTING
PROGRESS REPORT
RANGE
TESTING
VEHICLES