MG Energy Systems MGRS12S4P176, Руководство пользователя

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7.5 Propagation prevention system
The battery module is equipped with a thermal Propagation Prevention Systems (PPS). At the rear of
each battery module a connection point is available to prevent cell-to-cell and module-to-module
thermal runaway propagation.
WARNING:
Make sure the Propagation Protection System is used as described under all
cicumstances.
LIMITATION:
A single PPS pressure container can, for integration reasons, serve more than one
battery module by parallel connection. In such a situation it must be considered
than when the PPS system is triggered in one battery module, the remaining
parallel connected battery moduls are unprotected from that point one.
If a MG Master HV battery management system is used on battery system level an
general purpose input can be used as warning input monitoring an external
pressure sensor on the PPS pressure container.
When a thermal runaway event occurs, the PPS fluid will be automatically released into the battery
module. The propagation prevention fluid is normally contained in a pressurised tank.
CAUTION:
When the PPS is activated, fluid will flow into the battery module. When there is
flowing more than 12 litres into the battery module it will reach the exhaust
output and fluid will flow into the exhaust ducting.
A pressure tank with a propagation prevention fluid is connected as shown in figure 15. The
requirements for the pressure tank:

PPS fluid with equivelant heat capacity as water;

PPS fluid with equal or lower boiling point as water;

PPS fluid with equal or higher latent heat as water;

PPS fluid equal or lower viscosity as water;

Minimum volume of PPS fluid is 12 liters;

Pressurized tank volume must be at least 1.5 times the PPS fluid volume;

Tank pressure must be between 2 Bar and 3 Bar;