Different Types of Hybrid Vehicles: Battery and conventional

Different categories of hybrid electric vehicles

1. 1
DRILL OF THE MONTH
HYBRID VEHICLES

2. 2
WHAT IS A HYBRID VEHICLE?
Any vehicle which combines two or more
sources of power.
Examples:
Diesel –electric
Nuclear –electric
Gasoline -electric

3. 3
HYBRID STRUCTURE
The two power sources found in hybrid
vehicles may be combined in different
ways, either in parallel or series
Either one will allow the gasoline engine to
shut down when it is not needed.

4. 4
PARALLEL HYBRID
Gasoline motor
Batteries which
powers an electric
motor
Both can power the
transmission at the
same time
Electric motor
supplements the
gasoline engine

5. 5
SERIES HYBRID
Gasoline motor turns
a generator
Generator may either
charge the batteries
or power an electric
motor that drives the
transmission
At low speeds is
powered only by the
electric motor

6. 6
HIGH VOLTAGE ELECTRICAL
SYSTEMS
Power for the electric motor is supplied by
high-voltage nickel-metal hydride battery
Batteries for all hybrids are produced by
Panasonic EV Energy in Japan
Voltage ranges from 144 volts to 650 volts
of DC current

7. 7
HIGH VOLTAGE ELECTRICAL
SYSTEMS
High voltage wiring may color coded
orange, bright blue or even yellow
Batteries vary in design, however, all
incorporate individual cells connected to
one another

8. 8
HIGH VOLTAGE ELECTRICAL
SYSTEMS

9. 9
BATTERIES
Individual cells originally contained liquid
potassium hydroxide
The liquid is almost totally absorbed by
the paper membranes inside each cell of
the battery
Because the liquid is absorbed these
batteries are considered “dry cell”
batteries

10. 10
BATTERIES

11. 11
HIGH VOLTAGE ELECTRICAL
SYSTEMS
Batteries are usually located in the rear of
the vehicle under the floor of the trunk or
under the rear seat.
The wiring harness from the batteries
usually runs below the floorpan of the
vehicle about one foot in from the driver’s
side of the vehicle.

12. 12
HIGH VOLTAGE ELECTRICAL
SYSTEMS

13. 13
BATTERY RECHARGING
The Ni-MH batteries are recharged
through a process call regenerative
braking
Regenerative braking takes energy from
the forward momentum of the vehicle and
captures it while coasting or braking.
Occasionally batteries are recharged by
the electric motor

14. 14
THE “SILENT” HYBRID
Most gasoline engines
in hybrids will shut off
when not needed –
i.e. when stopped in
traffic
Most hybrids have an
indicator light which
may alert individuals
to the status of the
vehicle

15. 15
THE “SILENT” HYBRID
When the vehicle is in this silent mode it
may “awaken” without notice
Chocking the wheels is critical to
responder safety

16. 16
EMERGENCY PROCEDURES
FIRES
Vehicle fires can be handled following
normal vehicle firefighting procedures
Crews should not be shocked, even if
flames are impinging on the battery pack
itself
Virtually all fires involving Ni-MH batteries
can be controlled with water

17. 17
EMERGENCY PROCEDURES
Ni –MH BATTERY PACK
PHYSICAL DAMAGE
High-voltage circuits are color-coded either
orange, bright blue or yellow
Never disassemble or remove the metal cover of
the high-voltage battery pack
DC current is normally isolated from any contact
with the vehicle itself –theoretically in order to
receive a shock you would have to physically
contact two separate points within the high-
voltage system at the same time

18. 18
EMERGENCY PROCEDURES
Ni –MH BATTERY PACK
PHYSICAL DAMAGE
If the high-voltage cables running under
the vehicle were damaged the high-
voltage battery is designed short circuit.
This short circuit would de-energize the
entire high-voltage battery circuit

19. 19
HYBRID VEHICLES –CRASH
PROCEDURES
Hybrid vehicle identification
Vehicle stabilization
Access to the passenger compartment
Shift gear selector lever (to park)
Turn the key “OFF” and remove it from the
ignition
Check that the “ready” indicator light is out
Disconnect the 12-volt battery.

20. 20
HYBRID VEHICLES –OTHER
CONSIDERATIONS
A rear-end collision would destroy the most
obvious hybrid vehicle logos
•Indicator light on the dash would help identify
•Vented c-pillar on older hybrids
•Orange wiring under the hood
If the high-voltage battery is severely damaged
it should be considered a hazmat incident
•This is not true, the total amount of liquid originally placed in
the batteries is only around 6 oz.; this is almost totally
absorbed by the paper membranes in the cells

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HYBRID VEHICLES –OTHER
CONSIDERATIONS
KEYLESS IGNITION SYSTEMS

22. 22
KEYLESS IGNITION SYSTEMS
Convenience of push button start
Systems are designed to deter theft and
break-ins
Utilize key fobs which contain a chip with
an ID code that the vehicle must
recognize
The key fob must be in the vehicle in
order for the car to start

23. 23
KEYLESS IGNITION SYSTEMS
What do we do in an emergency?
Place the vehicle in Park and press the start/stop
or power button.
If possible remove the key fob from the interior
of the vehicle –this may be difficult since it may
be in a purse or pants pocket. This will prevent
the car from being powered up if the low
voltage system cannot be secured.
Disconnect the low voltage battery per
department policy.

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COMMON MEANS OF
IDENTIFICATION

25. 25
COMMON MEANS OF
IDENTIFICATION

26. 26
COMMON MEANS OF
IDENTIFICATION

27. 27
WHO’S MAKING HYBRIDS
NOW?
Honda
•Accord
•Civic
•Insight
Toyota
•Prius
•Camry
•Highlander
Ford
•Escape
Mazda
•Tribute
Saturn
•Vue
Lexus
•RX 400h SUV
•GS 450h
•LS 600h L
Mercury
•Mariner SUV
Dodge
•Ram –contractor’s edition
General Motors
•Silverado and Sierra
•Malibu
•Tahoe/Yukon
Nissan
•Altima
•Versa

28. 28
WHAT’S IN STORE FOR THE
FUTURE?
Toyota Sienna minivan
Chrysler Aspen
Cadillac Escalade
Dodge Durango
Porsche Cayenne
BMW X6
Hyundai Accent
Mercedes Benz S400

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SUMMARY
Due to the proliferation of hybrid vehicles on
the road today, responders must be
familiar with how these vehicles operate,
and how to handle an emergency which
involves one of these vehicles.
Additionally, responders must stay up-to-
date with current vehicle technology, as it
is continuously changing.