TATA Motors Nexon EV 2003, Руководство пользователя, Страница: 10 / 308

EV OVERVIEW
An electric vehicle is powered by a battery
- Edrive and it does not need any type of
fossil fuel. While conventional vehicles use
an internal combustion engine and gaso-
line or diesel as fuel, electric vehicles use
electrical energy that is stored inside the
high voltage battery. As a result, electric
vehicles run on electricity, they are eco-
friendly - they do not require fuel and are
zero emission vehicles.
Review and Characteristics
This is an electric vehicle. Some of the ve-
hicle’s systems operate differently and
have different operating characteristics
than vehicles equipped with an internal
combustion engine. It is important to care-
fully read the entire Owner’s Manual for
this reason.
This Vehicle uses two types of battery sys-
tems- a high voltage system in which a
high voltage battery powers the inverter
and electric motor which in turn propel the
vehicle and a low voltage system in which
a 12-volt battery provides power to the ve-
hicle systems and features such as the
audio system, supplementary restraint
systems, headlights and wind-shield
wipers. The high voltage battery also
charges the 12-volt battery.
The high voltage battery must be charged
with electricity before the vehicle can be
driven. As the vehicle operates, the battery
gradually discharges and when completely
discharged, the vehicle needs to be
plugged in for charging. To increase the
range of the EV, regenerative braking has
been incorporated. Basically, while the ve-
hicle is coasting or braking, the motor
works as a generator and converts the ve-
hicle motion (kinetic energy) to electrical
energy to charge the HV battery.
This vehicle is considered to be an envi-
ronmentally friendly vehicle because it
does not emit exhaust gases, and thus is
cleaner than the conventional vehicles in
terms of air pollution.
Main Components
3 IN 1 Unit
On-Board Charger (OBC): A device •
that charges the high voltage battery
by converting AC power from a domes-
tic supply into DC power and supplying
it to the battery.
DC-DC Converter: A device that con- •
verts HV DC power from the HV bat-
tery to LV DC power which is required
to maintain LV battery charge, which in
turn powers the LV systems like lights,
wipers, infotainment, etc. in the vehi-
cle.
Power Distribution Unit: Distributes •
power from the high voltage battery to
the HV components like inverter, DC-
DC converter, E-compressor etc.
Bi-directional Convertor: The bi-di- •
rectional AC-DC/DC-AC converter reg-
ulates the active power transferred
from the DC battery to the AC powered
devices. Additionally, it maintains unity
power factor while controlling active
power transferred from the AC grid to
the DC battery..
INTRODUCTION TO EV
1