Full HEV : -
This kind of EHV can have independent power source like working just on electric
propulsion system or ICE or both can work at same time to power the vehicle during high vehicle
performance requirement and it electric battery doesn’t required to be charged from external charging
plug but the battery gets charged by ICE itself so no external battery charging is required. They can
also operate in parallel and series mode also example like “Toyota Prius”. The parallel mode uses both
the electric motor and combustion engine at same time to drive the wheels. whereas the series mode
means the main power is the ICE and the electric motor will assist the ICE for more performance.
Mild EHV : - This kind of EHV also has both power sources but here the vehicle cannot work
independently on the electric propulsion, here the vehicle mainly runs by both source of power at same
time, but it can work at ICE independently. Example: - “Honda Accord Hybrid”. they are limited to
parallel mode, so they work only on series mode.
Plug-in EHV :- This kind of EHV also has two power source and can run independently on electric or
ICE but here the battery of electric propulsion system is not charged with the ICE but it is charged by
the external charging plug that’s why it is named Plug-in EHV. Mainly the Plug-in hybrid have more
capacity in battery then in Full hybrid and they range is also higher than the average Full hybrid. They
can work on both series and parallel mode.
There are some
other types of EHVs which are not common in use like high-performance hybrids which
are
used
in high performance cars such as “Ferrari”, “McLaren”, Etc. These Automobiles companies
uses this hybrid technology to boost cars performance unlike others they do not focus fuel efficiency
and they focus on performance maximization. They use the hybrid electric motors to assist the engine
to maximize performance to the vehicle they use the hybrid electric technology in completely opposite
way.
The H
E
Vs are fuel efficient than conventional vehicle because of less emission generate due to electric
motors. And they are cost-effective and affordable also, compared to conventional vehicle. The ICE
required in H
E
V is lighter than the conventional one, so it makes the
Vehicle
lighter and more spacious.
the
Vehicle
also decreases fuel usage which increases the driving range of the vehicle. The H
E
Vs are
also more preferred than pure
E
lectric
Vehicle (EV) [3] due to
performance compromise
in EV
,
EVs are
costly
and requires
electric charging station
s for charging which are not available outside the cities
,
obviously
lesser emission
are
there but the time required for charging is 10-12 hours compared fuel
engine
which
is too much. but in H
E
V,
charging stations are not required for
char
ging
the battery, but
it is charged by the generator, which is connected to the engine, so the power gets reused by electric
motors to accelerate the vehicle. The H
E
Vs mainly are built for economy, so there is
a
compromise of
performance in some H
E
Vs, the H
E
V also increases the maintenance of the vehicle because of complex
components used and mainly due to electronic components requires skilled experts for the maintenance.