MAIN COMPONENTS OF ELECTRIC VEHICLE
•On-Board Charger (OBC): External de‐
vice (low speed) to charge the high
voltage battery.
•Inverter: Transforms direct current
into alternate current to supply pow‐
er to the motor, and transforms al‐
ternate current into direct current to
charge the high voltage battery.
•LDC: Transforms power from the
high voltage battery to low voltage
(12 V) to supply power to the vehicle
(DC-DC).
•VCU: Functions as a supervisory con‐
troller of electric vehicle
•Motor: Uses electrical energy stored
inside the high voltage battery to
drive the vehicle (functions like an en‐
gine in a standard vehicle).
•Reduction Gear: Delivers rotational
force of the motor to the tires at ap‐
propriate speeds and torque.
•High voltage battery (lithiumion poly‐
mer): Stores and supplies power nec‐
essary for the electric vehicle to op‐
erate (12 V auxiliary battery provides
power to the vehicle features such as
lights and wipers).
❈OBC : On-Board Charger
❈LDC : Low Voltage DC-DC Converter
Electric vehicle guide
1-04
