Figure 4: Risks and potential dangers of high
voltage systems [3]
Out of the point of view of the high voltage battery
potential defects can be caused out of internal and
external short cuts, cell aging processes,
overcharging and over-discharging, external high
temperature or crash events as well.
All of it can cause reactions inside of the battery
which can lead to overheating and fire, to the
destruction of the separator or to a thermal
runaway.
In addition deflagration and explosion are possible,
if there is a local gas concentration and an ignition
by spark will take place.
Dangerous chemical substances can escape from
the component housing as well.