--14--
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 turn 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 voltage range from 8 V to the beginning of the phase U1 for short charging
times. The LED
"Power"
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, any active loads and the charging state. The charging
converter records the charging process.
3.
In case of a high battery voltage, 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
"Power"
is on), the battery voltage will be kept constant at a high level. The green LED
"Batt. Full" is flashing
and the additional high battery capacity will be charged. The battery charging current is
decreased slowly as the battery is charged. The charging converter determines the
100 % full charge point
of the
battery and automatically changes to the U2 phase by monitoring the charging time, charging current and the
charging process. In contrast to conventional voltage transformers or boosters with fixed default values for charging
current thresholds, an unnecessary long phase U1 is avoided, which might be caused by loads being also supplied, and
thus falsifying the charging current.
5.
Phase U2
(LED
"Batt. 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 to hold the battery at a full charge.
Note:
During the
phases U1, U2
(battery full) almost the
total charger current
is available for the additional
supply of
loads
, without any discharge of the battery.
