Kia EV9 - High-voltage Battery Re-ignition Risk

6. IN CASE OF FIRE
To prevent re-ignition, the first
responder and second responder need
to be aware of the risk of stranded
energy* which remains in the damaged
cells and lead to re-ignition.
*Thermal runaway: The originating
cause of thermal runaway is generally
short circuiting inside a battery cell and
a resulting increase in the cell’s internal
temperature.
Battery produces heat with thermal
runaway and it can spread from one
battery cell to many cells, in a domino
effect.
*Stranded energy : Energy remains
inside any undamaged battery cells
after the accident. That stranded
energy can cause a high-voltage
battery to re-ignite multiple times after a
fire has been extinguished.
How to Prevent Re-ignition
(Mitigating Stranded Energy
Risk)
1. 12 V battery (-) terminal
disconnection (To depower battery
management system)
2. High-voltage shut off
(refer to page 7~9)
3. Discharging the high-voltage battery
(refer to page 22)
WARNING
Electrolyte Irritation
The high-voltage battery contains
electrolyte solution. To avoid exposure to
electrolyte solution and serious personal
injury, always wear appropriate solvent
resistant PPE (Personal Protective
Equipment) and SCBA (Self-contained
Breathing Apparatus).
• Electrolyte solution is an eye irritant – In
the event of contact with eyes, rinse with
plenty of water for 15 minutes.
• Electrolyte solution is a skin irritant.
Therefore, in the event of contact with skin,
wash off with a soap.
• Electrolyte liquid or fumes coming into
contact with water will create vapors in the
air from oxidization. These vapors may
irritate skin and eyes. In the event of
contact with vapors, rinse with plenty of
water and consult a doctor immediately.
• Electrolyte fumes (when inhaled) can
cause respiratory irritation and acute
intoxication. Inhale fresh air and wash
mouth with water. Consult a doctor
immediately.
6.4 High-voltage Battery Re-
ignition by Stranded Energy
Damaged cells in the high-voltage battery
can experience thermal run away* and re-
ignition.
Kia EV9
Emergency Response Guide
19