Charging Process; Supply Battery Charging Process (Battery 2); Starter Battery Charging Process (Battery 1) - Calira EVS 17/16-DS/IU Mode D'emploi

Charging process

Supply battery charging process (battery 2)

The power supply has electronic protection against polarity
inversion. The charging current is only released once the bat-
tery is correctly connected and a minimum voltage of 1.5 V
is applied. While it is being charged, the battery voltage is
monitored constantly by way of the B+ measuring line.
The charging process follows the charging characteristic
curve, with minimal energy loss (for the charging characteris-
tic curve, fig. 5).
Bulk phase
(all voltage values with respect to a battery temperature of 20 °C)
Charging with maximum constant charging current until the
battery reaches 14.4 V. If the charging current drops below
90 % of the rated current during this phase due to the internal
resistance of the battery and cable resistance, the absorption
phase is started.
Absorption phase
(all voltage values with respect to a battery temperature of 20 °C)
The charging voltage is held at a constant 14.4 V for ten
hours for gel or AGM batteries; for liquid electrolyte batteries,
this voltage is held for four hours. After this time, the device
switches to the charge phase. If during this period the current
rises to more than 90 % of the nominal current while the bat-
tery voltage falls to below 13.2 V for a period of 15 minutes
with liquid-electrolyte types or more than two hours with gel
or AGM batteries, the unit will automatically switch back to
the main charging phase.
Float phase
(all voltage values with respect to a battery temperature of 20 °C)
The charging voltage is set to 13.8 V. At the same time, the
charging current drops to the value necessary for the equalis-
ing charge of the battery. If the charging current rises to its
rated value due to a user and the battery voltage remains
below 13.2 V for at least two minutes, then the device switch-
es back to the bulk phase.
Parallel operation
If during the absorption or float phase, current is consumed, it
is recharged immediately.
Starter battery charging process (battery 1) –
Parallel circuit
Driving operation
During driving operation, the starter battery (battery 1) is
charged by the generator of the vehicle. As long as the alter-
nator is running and the voltage at D+ input of the electrical
power supply rises above 13.7 V, the supply battery and the
starter battery are switched in parallel. The supply battery is
now charged by the generator. If the voltage at D+ input of
the electrical power supply falls below 13.2 V, the parallel
switching is stopped again.
Mains operation
(all voltage values with respect to a battery temperature of 20 °C)
When connecting to the mains of 230 V, the supply battery
is charged first. Once the supply battery reaches a voltage of
14.1 V, it is switched in parallel with the starter battery. If the
charging current rises to its rated value due to a user and the
battery voltage falls below 13.0 V, then the parallel connection
is automatically disconnected. The starter battery thus always
remains ready to start.
Solar operation
When connecting external solar cells, the starter battery is
also charged provided that the voltage of the supply battery
has reached 14.1 V. If the voltage of the supply battery drops
below 13.0 V, the parallel circuit is disconnected again.
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