Page 354 - Electrician - TT (Volume 2)

ELECTRICIAN - CITS

Plug-In Hybrid Electric Vehicles (PHEVs)
Plug-in Hybrid Electric Vehicles (PHEVs) use batteries to power an electric motor and another fuel, such as
gasoline to power in Internal Combustion Engine (ICE). The vehicle typically runs on electric power until the
battery is nearly depleted and then the car automatically switches over to use the internal combustion engine.
(Fig 2)

Fig 2

EL20N21420012

Battery Electric Vehicles (BEVs)
A Battery Electric Vehicles (BEVs), pure electric vehicle, only electric vehicle or all electric vehicle is a type
of electric vehicle (EV) that exclusively uses chemical energy stores in rechargeable battery packs, with no
secondary source of propulsion (e.g. hydrogen fuel cell, combustion engine etc) (Fig 3)

Fig 3

EL20N21420013

EV Basic Working Principle

An electric vehicle works on a basic principle of conversion of Electrical energy into mechanical energy. There is
a motor used in the electric system to carry on this duty of conversion.
Main Components of EV Chargers

• Battery
• Power Conversion System
• Software
EV battery voltage is 12V for the lead acid battery any typically some where between 400-800 V for the lithium-ion
battery pack. Lithium-ion battery capacity is measures in KWH (Kilo Watt Hours). The average capacity is around
40 kwh, but some Cars now have upto a 100 kwh capacity.
EV batteries are projected to last between 1,00,000 and 2,00,000 miles or about 15 to 20 years.

An electric current is a flow of charges particles. The size of an electric current is the rate of flow of charge
Quantity of Charge (Q) = Current (I) x Time (t)
(Q) = It

341

CITS : Power - Electrician & Wireman - Lesson 25 CITS : Power - Electrician & Wireman - Lesson 25