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4.3 Operating modes
In all modes except sleep mode, the terminal voltage is present, the RS485 communication is active, the LED’s operate and the dry
contactor operates. Each Evolion controls its own switch state, independent of other parallel connected modules, without the need of
an external master battery management module.
Mode
Schematic
Description
Regulated
charge
Charge current is accepted anytime the network voltage is higher than
the Evolion terminal voltage. Current is accepted through the current
regulation device. If the charge current exceeds the maximum allowed
charge current (See Charging section), the charge regulated mode
becomes active. The current will be limited and the excess charge energy
dissipates through the front face heat sink. The surface of the heat sink
will be “hot” during which is normal for regulated charge mode. The
Evolion checks every 60 seconds if the maximum charge current is still
exceeded by direct connecting for a short time (see Fast charge mode)
and measuring the current. Regulated charge mode will remain active as
long as the charge current exceeds the maximum allowed charge current.
Discharge is always allowed and switching is done with no time delay.
Fast charge
Charge current is accepted anytime the network voltage is higher than
the Evolion terminal voltage. The cells are directly connected to the
network voltage. If the charge current does not exceed the maximum
allowed charge current (See Charging section), the Fast charge mode
stays active. Anytime the charge current exceeds the maximum allowed
charge current, the Charge regulated mode will become active. Discharge
is always allowed and switching is done with no time delay.
Float charge
Same as Fast charge mode but in this case the network voltage is equal
to the Evolion voltage and the current accepted by the Evolion cells is
zero. The network only provides power (65 mA) for internal electronics.
Discharge is always allowed and switching is done with no time delay.
Forbidden
charge
Regulated charge, fast charge and float charge modes are disabled. This
situation appears when a limit is exceeded, i.e., minimum or maximum
cell or battery voltage. Discharge is always allowed and switching is done
with no delay.
Discharge
Discharge current occurs anytime the network voltage is less than the
Evolion terminal voltage (AC power outage). The battery continues to
discharge until the minimum voltage of 42 V where it switches to the
sleep mode. The battery automatically begins charging, with no switching
delay, when the network voltage (AC power) returns.
Sleep and
Safe
The switch is open. No current can pass in charge or discharge and the
LED’s do not operate. There is no output voltage on the terminals.
4.4 Internal electronic load
An internal electronic load keeps the Evolion’s automatic functionality alive. There are two scenarios, i.e., sleep mode and all other
modes. The low power consumption is supplied from the 48 Vdc circuit.
Sleep mode (OFF)
120 micro-amps @ 42 Vdc
All other operating modes, Nominal (ON)
65 milli-amps @ 56 Vdc
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