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Chronological Sequence at the Board Battery (OUT):
A new, complete main charging cycle will be executed:
After a standstill of the generator or removal of the control signal "D+".
If the voltage of the starter battery has dropped below the adjusted switching off threshold for more than 30 seconds.
When the board battery is brought below the battery reset voltage for 30 seconds due to high load beyond the
maximum charging current.
1.
Activation of switched-off LiFePO4 batteries, charging aid for deeply discharged lead batteries, which will be subject
to gentle preliminary charging to approx. 8 V.
2.
Maximum charging current (
phase I
) in the mean voltage range from 8 V to the beginning of the phase U1 for short
charging times. The LED
"Main Charge"
is lighting, and approx. 75 % (lead), approx. 90 % (LiFePO4) of the capacity
will be charged. The duration of phase I depends on the battery conditions, the load by the consumers and the
charging state. The charging converter records the charging process. For reasons of safety, the phase I will be
terminated by the safety timer after 15 hours, at the latest (cell defects etc.).
3.
In case of high battery voltage rates, the charging current will be slightly reduced for battery protection (orientation
phase). After that, automatic switching to the following phase U1.
4.
During the
phase U1
(LED
"Main Charge"
is lighting), the battery voltage will be kept constant on a high level. The
green LED
"Battery Full" is flashing
, and the additional high battery capacity will be charged. The battery charging
current is decreased slowly while full charging is increasing. The charging converter controls the charging time and
the charging current. From these values and from the course of charging being recorded during the phase I, the
charging converter determines the
100 % full charge point
of the battery for automatic switching to U2. In contrast
to conventional voltage transformers or boosters with fixed default values for charging current commutation, an
unnecessary long phase U1 is avoided, which might be caused by consumer loads being possibly also supplied, and
which are falsifying the charging current.
LED
"Main Charge"
will stop lighting.
5.
Phase U2
(LED
"Battery Full" is lighting permanently
): The charging converter has now switched to the lower
voltage for trickle charge maintaining 100 % charge of the battery. Only the low compensating recharging current is
flowing, which is determined by the battery, and which is required for constant conservation of the full charge.
Note:
During the
phases
U1, U2
(battery full) almost the
total
charger current is available for
additional
supply of
consumers
without any discharge of the battery.
