COLD TEMPERATURE TESTS OF HEATED/INSULATED BATTERY FOR AM GENERAL DJ-5E JEEPS
The U. S. Postal Service operates approximately 400 electric vehicles; predominantly AM General DJ-5E vehicles with a 1300-pound (590 kilogram), 3.22 cubic foot (9 X 10** - **2 cubic meter), 54-volt Gould propulsion battery. The purpose of this effort was to determine practical solutions for maintaining the battery in an operable condition, i.e. electrolyte temperature above 50 degree F (10 degree C), over weekend "cold-soak" periods in ambient temperatures as low as 15 degree F ( - 9.5 degree C). Cold chamber tests were conducted on both the unwrapped battery and on the battery with a combination of various types of heat sources and insulation. Test results indicated that a heat source of about 300 watts with a foil-faced insulation cover and heat cycling by thermostatic control would maintain the battery in an operable condition. As a result of this effort, the vehicles will now be able to complete assigned routes in these low ambient temperatures after weekend "cold-soak" periods.
- From the Meeting held 26 February-2 March 1979.
Warrendale, PA United States 15096
- Gerlach, L J
- Publication Date: 1979
- Pagination: 4 p.
- Society of Automotive Engineers Preprint
- Publisher: Society of Automotive Engineers (SAE)
- TRT Terms: Automobiles; Cold weather; Electric batteries; Electric insulating materials; Electric vehicles; Insulating materials; Operations; Storage batteries; Temperature; Testing
- Old TRIS Terms: Cold temperature tests; Storage battery vehicles
- Subject Areas: Administration and Management; Energy; Geotechnology; Highways; Materials; Vehicles and Equipment;
- Accession Number: 00197237
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: SAE 790115 Conf Paper
- Files: TRIS
- Created Date: Sep 15 1979 12:00AM