10 High Voltage batteries
The Emectric BM384 battery system consists of 384 cells per battery which have a total nominal
voltage of 350 V, total nominal capacity of 11.2 Ah, and maximum usable energy of 4.2 kWh.
Batteries are sealed to minimize the risk of a battery fire. The type of Li-Ion cells used in the
batteries is sensitive to excessive heat and may spontaneously ignite at temperatures above
150°C. Cell life is also reduced with high temperatures. Operation above 60 °C should be
avoided. The battery pack is designed to prevent the propagation of fire in a single cell. When
a cell ignites, approximately 12 l of high temperature, poisonous gasses will be released
instantaneously. These gasses are directed via the exhaust nozzle to the outside of the aircraft.
Battery requires no internal maintenance.
WARNING: Do not inhale any gasses as the result of a battery fire.
WARNING: Battery maintenance must be done by the supplier or OEM.
Overview
Figure 10-1 Battery overview
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