MG Energy Systems MGRS12S4P176, Manual

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Fluid cooling requirements
A list with the basic thermal management system requirements is stated in table 14.
Table 14 - Fluid cooling requirements per module
Cooling system Fluid cooling system with pressure-less return (battery module’s
outlet side).
Coolant type Ethylene glycol based with a maximum ratio of 50% Ethylene glycol,
e.g. Eurol Coolant XL -36°C (E504140).
Coolant inlet temperature Range of 18 °C to 30 °C.
Maximum inlet pressure 0.7 bar (versus ambient)
Maximum outlet pressure 0.3 bar (versus ambient)
Operational flow 1 to 2 l/min with a pressure drop of 0.15 to 0.35 bar
Heat rejection 0.5 C = 70 W
1 C = 280 W
2 C = 1.200 W (recommended flow 2 l/min)
3 C = 2.500 W (recommended flow 2 l/min)
CAUTION:
The following aspects must be taken into account:

Make sure the coolant solution is ethylene glycol based. The use of
propylene glycol based coolants can lead to permanent damage of the
battery module’s interior.

Make sure that the cooling inlet and outlet are not reversed. Reverse flow
can lead to excessive pressure on the battery module’s interior resulting
in permanent damage.
NOTICE:
All fluid cooling circuit of the battery modules are connected in parallel. When
system requirements are not clear or cannot be fulfilled, please contact MG
Energy Systems to discuss other possibilities and solutions.
7.4 Exhaust
The exhaust system has the function to channel the released gasses during a thermal runaway event
to a safe area. To be able to do this, an exhaust output with pressure relief is designed at the rear of
the battery module. A ducting system can be connected to expel the toxic and flammable gasses
from the module and prevent it from releasing the gasses in the battery area.
The battery module has a connection flange for connection to off-gas ventilation ducting. The flange
has an external diameter of Ø80 mm. The used off-gas ventilation ducting must meet the following
requirements:

Cross-sectional area : ≥ Ø80 mm or equivelant area;

Temperature resistance : ≥ 75 °C;

Material : steel of stainless steel.