| dc.description.abstract | Abstract: Transportation is a basic requirement
of humans. Currently, fossil fuels are the main
source used in automobiles and the trend is
moving towards electric vehicles which is more
environmentally friendly. Battery is one of the
main components in an electric vehicle. This
paper aims to introduce an intelligent battery
control system which integrates a dual battery
mechanism and four riding modes. Two lithiumion battery packs with 48V and 16AH each are
used. Full electric, pedal assist, neutral and
continuous charging are the four driving modes.
The pedal assist mode is implemented with new
Control mechanism and continuous charging is a
new concept to E-bicycles. An alternator is used
as an energy harvesting mechanism. The state of
charge of each battery pack are automatically
detected and pack with lower state of charge is
assigned to store the energy harvested from
regenerative mechanism. The battery pack with
higher state of charge is allotted to drive the
bicycle. System will automatically interchange
the role of each pack when the driving pack
reaches to its acceptable minimum state of
charge. Proposed system will allow both battery
packs to charge or discharge within its full
nominal range which is not linear. Thus, that
allows an increase in per charge travelling
distance. The inter connection between
subpacks are controls through a relay panel
based on voltage readings. Finally, the bicycle
was subjected to road trials under three drivers
with different weights. Proposed system helps to
cover 41.6km under electric mode and covers
49.4km in pedal assist mode. Bicycle needs to
cover 61km in continuous charging mode to fully
charge the battery | en_US |
