ENERGY-STORAGE SYSTEMS FOR AUTOMOBILE PROPULSION: 1979 STUDY. VOLUME 3. BATTERY/FLYWHEEL ELECTRIC VEHICLES USING ADVANCED BATTERIES

The effect of applying flywheels to electric vehicles using advanced batteries is determined. The specific energy of the batteries is maximized at the expense of peak-power capability to optimize performance when used with flywheels. The characteristics of battery flywheel vehicles are determined and compared to all-battery vehicles subjected to the same range and peak-power specifications. Three combinations of vehicle power and range are considered for an SAE J2279aD cycle: 0.026 kW/kg and 120 km; 0.033 kW/kg and 210 km; and 0.049 kW/kg and 400 km. The combination of 0.016 kW/kg and 80 km is used with an SAE J227aC cycle. The batteries considered are lld/acid, Ni/Fe, Ni/Zn, ZnCl sub 2, LiAl/FeS sub 2, Na/S(cer), and Na/S(glass). Projected improvements in batteries and flywheels are considered over the next 20 y, based on probable and optimistic performance. The results show that flywheels do not necessarily yield a saving in vehicle mass (or range increase for constant vehicle mass). This becomes more apparent as batteries improve with time or approach optimistic performance projections. However, as the vehicle's performance level becomes more demanding, the flywheel becomes more effective for describign vehicle mass.

  • Corporate Authors:

    University of California, Livermore

    Lawrence Livermore National Laboratory
    Livermore, CA  United States  94550

    Department of Energy

    1000 Independence Avenue, SW
    Washington, DC  United States  20585
  • Authors:
    • Schwartz, M
  • Publication Date: 1979-12-15

Media Info

  • Pagination: 58 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00318377
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Contract Numbers: W-7405-ENG-48
  • Files: TRIS
  • Created Date: Sep 16 1981 12:00AM