equipment that satisfies CCR
§
935 (2) or NFPA 52
regulations.
DTNA recommends the highest level of safety
validation if there are multiple validation requirements
in the state or locality where the vehicle is operated
or domiciled.
In Case of a High-Voltage
Battery Thermal Event
The vehicle is equipped with a thermal event
detection system to spot thermal events inside the
high-voltage batteries.
Gas detection sensors that identify external off-
gassing associated with high-voltage battery thermal
events back-up this system. The gas detection
sensors are always active, even when the vehicle is
off. For more information, see the
Combustible Gas
Detection System
section in this chapter.
The driver should be familiar with the vehicle warning
systems in order to bring the vehicle to a safe stop
or avoid starting the vehicle if a high-voltage thermal
event is detected.
DANGER
When fire is involved, consider the entire vehicle
energized and DO NOT TOUCH any part of the
vehicle. Doing so could result in severe personal
injury or death.
Emergency responders should protect
themselves with full personal protective
equipment (PPE).
WARNING
A damaged high voltage battery can create rapid
heating of the battery cells.
If smoke is coming from a high voltage battery
assume that it is heating. Leave the area. Avoid
breathing in the smoke. Breathing in the smoke
could result in severe personal injury.
NOTICE
If smoke or flames are coming from a high
voltage battery, trained emergency responders
should use large amounts of water to cool the
battery.
Battery fires can take up to 24 hours to
extinguish. Emergency responders should
consider allowing the battery to burn in place.
Do not tow a vehicle until all fires have been
extinguished and the high-voltage batteries are
no longer giving off heat.
After a fire, do not store a towed vehicle indoors.
If a thermal event is detected inside a high-voltage
battery when the vehicle is on, the following things
will happen:
•
The red high-voltage battery thermal event
telltale, shown in
appears in the
dynamic telltale section of the driver display.
•
A red warning message, shown in
appears in the center of the driver display
screen.
The warning message must be acknowledged before
it will close.
The vehicle will continue to operate in the case of a
thermal event occurring in only one battery pack.
However, the driver is strongly advised to bring the
vehicle to a safe stop, apply the park brake, turn the
keyswitch to off, hit the eStop button, and exit the
f612179
07/29/2022
Fig. 19.22, High-Voltage Battery Thermal Event Telltale
f611989
06/30/2022
Fig. 19.23, Thermal Event Warning Message
In An Emergency
19.16
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