H Tronic 230 V / ACCharger C5ForNiCd, NiMH, Li-ion, LiPolymer, SLA, Lead-acid, Lead acid membraneRechargeable batteriesM 1242465 User Manual
Product codes
1242465
measurable at the end of charging. The unit recognises this voltage drop and is switched
off accordingly following –dU recognition. In this way a battery must not first be fully
discharged in order to prevent overloading!
3.2.4 Quick charging with temperature controlled switch-off
This charging method is ideally suited for quick charging and offers good protection from
overloading and damage to the battery. The following formula may be used here:
off accordingly following –dU recognition. In this way a battery must not first be fully
discharged in order to prevent overloading!
3.2.4 Quick charging with temperature controlled switch-off
This charging method is ideally suited for quick charging and offers good protection from
overloading and damage to the battery. The following formula may be used here:
T accu max. = T accu start + 15°C
Here:
T accu max.:
T accu max.:
maximum allowable battery temperature (also switch-off
temperature)
T accu start:
T accu start:
battery temperature before charging (or ambient temperature)
Hint: The temperature sensor must have a good thermal contact with the battery.
3.2.5 Trickle charging
After successful termination of charging, the charger normally switches to ‘trickle charge’
mode. This trickle charging is designed to compensate for any self-discharging of the
connected battery, particularly when this battery remains attached to the charger for
longer periods of time. Here a charge current in the region of 0.02-0.05C is recommended by
most battery manufacturers (with a possible time or battery voltage limit).
The AkkuMaster calculates a standard value from the entered battery capacity and suggests this
value as the charge or discharge current. The standard value of 1/2C was selected for the
charge current, because, in this case, the unit is able to guarantee certain charging endpoint
recognition. As the standard value for the discharge current, a standard value for the current
of 1/5C is suggested.
When charging (NiCd-/NiMH) the following parameters are considered by the AkkuMaster in order
to recognise the charging endpoint:
value as the charge or discharge current. The standard value of 1/2C was selected for the
charge current, because, in this case, the unit is able to guarantee certain charging endpoint
recognition. As the standard value for the discharge current, a standard value for the current
of 1/5C is suggested.
When charging (NiCd-/NiMH) the following parameters are considered by the AkkuMaster in order
to recognise the charging endpoint:
•
Capacity charged (charge capacity limit)
•
Maximum allowable battery temperature (if temperature sensor is fitted)
•
-dU
o
Hint: This parameter is considered when the charge current was set at no less
than 0.4C (see hint in section 3.2.1). This property can also be exploited if a
charge without –dU control is desired. A charging example without –dU switch-
off is depicted in the figure below.
than 0.4C (see hint in section 3.2.1). This property can also be exploited if a
charge without –dU control is desired. A charging example without –dU switch-
off is depicted in the figure below.
During discharge (NiCd-/NiMH) the following parameters, which recognise the discharging
endpoint, are considered by the AkkuMaster:
•
Minimum allowable cell voltage
•
Maximum allowable battery temperature (if temperature sensor is fitted)
Each event mentioned above can end/advance the service programme.
The following events are evaluated as errors:
The following events are evaluated as errors:
•
Disconnection of the battery during the service programme
•
Higher internal battery resistance
•
Maximum allowable cell voltage
•
Overheating of the unit
These cause the service programme to be completely terminated.