Manual
Operation Manual for
ZeMa Single Cells
Prepared on: 23-11-2022
Prepared by: GBA
Released on: 04.01.2023
Released by: -
Revised on: -
Index: _-
Distributed to: customer (public)
Pages: 15/35
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7.2
Charging of the rolling stock battery
These batteries should be charged with the described IU0U or IU
charging method (according to DIN 41 772 and DIN 41773-1).
Otherwise there is a risk of damage to your battery.
7.2.1 For operation in rolling stock vehicles the battery should be charged following EN 50547
“Railway applications – Batteries for auxiliary power supply systems” and in accordance
to
IU0U charging - characteristic
(DIN 41772) with temperature compensation (see
also: 7.2.3 “Temperature compensation of the charging voltage”). This complex charging
technology combined with temperature compensation and state of charge depending on
boost charge allows a fast recharge and a gentle continuous charge of the backup
7.2.2 For For rolling stock batteries with 2V ZeMaRail single cells, the 2 level battery charging
characteristic is recommended. The IU0U charge starts with a constant current phase
whilst the voltage increases as a function of the state of charge (SOC) of the battery. At
about 80%SOC the battery reaches the voltage of the boost-charging phase and the
charge current will reduce. At a SOC of about 95% the current is so low that the charge
control switches to the constant voltage charging. The battery will then get fully charged
and a small charging current remains to compensate the self-discharge and
recombination. The reference temperature is 20 ° C.
Figure 4 : Charging characteristic IU0U charge for
ZeMa200P18*