Vehicle
Speed
Operating
Electric Vehicle (EV)
mode
Stopped or driven at low speeds:
•
Only the electric motor
provides propulsion to the
wheels.
Driving state
Power Flow
Monitor
Electric motor
Stopped/Running
Generator
Engine
High Voltage
battery
14
Hybrid (HV)
Driven in high-load conditions
(e.g., when accelerating, going
uphill):
•
The Electric Motor provides
propulsion to the wheels.
•
The gasoline engine drives
the generator, supplying
electricity to the electric
motor for added propulsion
or to the High Voltage battery
for charging.
Stopped
Stopped
Discharge
Charging/Discharge
Engine (Direct Drive)
Driven in high-speed, low-load
conditions:
•
The gasoline engine provides
propulsion to the wheels.
•
The High Voltage battery
supplies electricity to the
electric motor for added
propulsion.
•
The electric motor provides
electricity to the High Voltage
battery through regenerative
braking.
Running
Generating/Running
Generating
Running
Charging/Discharge
Regeneration
The accelerator pedal is released
and the vehicle is decelerating.
•
The electric motor provides
electricity to the High Voltage
battery through regenerative
braking.
Regenerating
No Output
Stopped/No Output
Running
Stopped/No Output
Time
Charging