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Introduction
1.2 Thermal management system (TMS)
Cabinet thermal management system provides appropriate thermal conditions inside the cabinet.
Solution is integrated on the cabinet door with controlled air flow inside the cabinet.
There are two options – Fan Filter or Hybrid Air Condition & HEX solution.
1.2.1 Fan filter
Fan filter TMS using free cooling principle which is open loop system. Outside cold air is pulled into the
cabinet through the inlet filter and hot air is pushed out through the outlet filter. Inlet filter with two fans is
installed at the bottom and outlet filter at the top of the door. This principle provides overpressure in the
cabinet. Input and output air is filtered from dust or other particles. The filter must be changed when the
cabinet is no longer able to maintain the required temperature level. Filter change interval depends on
different factors as pollution, heat dissipation, thermal requirements or solar load.
The advantage of free cooling is large amount of exchanged air which is giving very high cooling
performance at low power consumption. The temperature inside the cabinet is always higher than
ambient (outside) temperature. With moderate ambient temperatures or low power dissipation the fans
will be running at low speed. As the ambient temperature or internal power dissipation increases the fan
speed will increase.
Fan filter solution also provides additional air recuperation mounted inside the door, helping to spread
the air evenly in the cabinet. It secures similar temperature around the batteries.
Cabinet is equipped with 2x 500W AC powered heaters for lower temperature conditions securing
adequate battery temperature.
Side View
Figure 1.1 Fan filter air flow diagram (side view)
Installation Guide ● PowerShaper 2.0
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