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- RS Series PPS tank 25 liter
RS Series PPS tank 25 liter
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 connect a pressure tank (PPS tank) with fluid to prevent cell-to-cell and moduleto-module thermal runaway propagation. This PPS tank can be connected to multiple battery modules in parallel. It is recommended to install at least one PPS per six batteries. It is mandatory to use at least one PPS per battery string.
Functional description:
The PPS tank is filled with 12 litre of fluid under a pressure of 2.5 Bar. If a thermal runaway event occurs in one of the connected battery modules, the pressure relief valve opens. At this moment the PPS inlet on the battery will be opened as well and fluid from the PPS tank flows into the battery module and cools down the cell(s) to stop thermal propagation. The PPS is fully mechanical and triggered by over-pressure inside the battery enclosure. This design is not depending on localized temperature acting or electronics malfunctioning, only acting in case of a thermal runaway induced pressure increase.