SAFETY PRESSURE EUQALISATION SOLUTIONS

Pressure balance elements with valve function.

SAFETY PRESSURE BALANCE ELEMENTS: THE PRESSURE BALANCE ELEMENTS FOR LI-ION BATTERIES

The move away from fossil fuels for the generation of electrical energy poses great challenges to our society. One of these challenges is the conversion of the ecologically generated electricity into the respective usable form of energy (motion, heat, potential chemical or corresponding electrical energy). This electricity must be converted and often stored. For this purpose, inverters, rectifiers and battery storage units are needed.

With our safety pressure equalisation products, we at RST offer you the right solution for your application: The Ventilation Safety Device (VSD) as well as the Auto Reversible Safety Device (ARSD) and the Auto Reversible Ventilation Safety Device (ARVSD) have been specially designed for battery systems and Li-ion batteries.

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mORE SAFETY PRESSURE BALANCE ELEMENTS

STATE-OF-ART-ART PRESSURE COMPENSATION SYSTEMS WITH VALVE FUNCTION

The energy density processed and stored in converters and storage units results in high electrical currents, which can lead to overheating of the systems and even explosive destruction. To avoid this, precautions should be taken for such devices in two respects:

Best possible ventilation to avoid overheating and excess pressure
Emergency degassing in the event of explosive overheating and destruction of components (Li-ion cells, capacitors, etc.)

In addition to protecting people and the environment, this also ensures that the systems have a long service life. Many of these systems are designed for mobile use, e.g. e-mobility and railway technology, or for outdoor use. This means they are sometimes exposed to harsh environmental and usage conditions. In addition to a high degree of protection (IP), the focus is on high energy density; mobile systems also require the lowest possible weight.

Costs and the requirement for low weight prevent battery storage, inverters or rectifiers from being designed to be extremely stable in accordance with the requirements of explosion protection. Our safety pressure compensation elements can therefore help.

During normal operation of the system, they guarantee a high degree of protection of up to IP66/68/69K (details can be found in the documentation).

With the VSD, an integrated PTFE membrane ensures appropriate pressure compensation even with the slightest pressure differences. If the pressure increases gradually or suddenly, the VSD opens, enabling emergency degassing.

The ARSD is not equipped with a membrane, but emergency degassing occurs like the VSD. The ARSD also has a valve function: It is reversible and closes automatically after emergency degassing.

VSD + ARSD = ARVSD AUTO REVERSIBLE VENTILATION SAFETY DEVICE:

The ARVSD brings together the advantages of the VSD and the ARSD. Equipped with a membrane, it ensures pressure equalization with the slightest differences, opens when the pressure is high and closes automatically when the pressure decreases.

FEATURES:

Avoidance of condensation
Avoiding a harmful explosion of the (battery) housing
High protection class
Vibration tested according to ISO 16750 "Road Vehicles, Part 3: Mechanical Loads"
Maintenance free