RESPONSE OF LEAD-ACID BATTERIES TO CHOPPER-CONTROLLED DISCHARGE
The preliminary results of simulated electric vehicle, chopper, speed controller discharge of a battery show energy output losses at up to 25 percent compared to constant current discharges at the same average discharge current of 100 A. These energy losses are manifested as temperature rises during discharge, amounting to a two-fold increase for a 400-A pulse compared to the constant current case. Because of the potentially large energy inefficiency, the results suggest that electric vehicle battery/speed controller interaction must be carefully considered in vehicle design.
- Misc-Revised. Conf-Proposed for Presentation at the 13TH Intersoc. Energy Conversion Eng. Conf., San Diego, Calif., 20-25 Aug. 1978.
Department of the NavyThe Pentagon
Washington, DC USA 20350
- Cataldo, R L
- Publication Date: 1978
- Pagination: 11 p.
- TRT Terms: Acids; Choppers (Electricity); Computer programs; Dissipation; Electric batteries; Electric current; Electric discharge; Electric vehicles; Energy; Lead acid batteries; Lead compounds; Simulation; Speed control; Temperature; Vehicle design
- Old TRIS Terms: Discharge; Electric choppers
- Subject Areas: Design; Energy; Highways; Vehicles and Equipment;
- Accession Number: 00181681
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NASA-TM-73834-REV
- Contract Numbers: EC-77-A-31-1044
- Files: TRIS
- Created Date: Oct 31 1979 12:00AM