Method for charging and discharging an electrochemical energy store and loading and unloading device

摘要

The invention relates to a method for charging and / or discharging an electrochemical energy store (10), wherein a first upper voltage limit value (Vmax) for a voltage (Vcell) of the energy store (10) is predetermined. In this case, a controlled variable of the energy store (10) represents a voltage (Vcell) which can be tapped off from the energy store (10) minus a predetermined voltage value (εcell, ηOHM, ηDiff) or the controlled variable is in a predetermined relationship to the voltage (Vcell) minus the predetermined voltage value ( εcell, ηOHM, ηDiff), wherein during a charging and / or discharging process, the controlled variable is regulated such that a value of the controlled variable, when this represents the voltage (Vcell) minus the predetermined voltage value (εcell, ηOHM, ηDiff), the first or the value of the controlled variable, when the controlled variable is in the predetermined relationship to the voltage (Vcell) minus the predetermined voltage value (εcell, ηOHM, ηDiff), is controlled to have a second upper limit does not exceed, according to the predetermined relationship to the first upper voltage limit (V max) corresponds. In addition, a lower voltage limit can be specified, and the controlled variable can be regulated accordingly with respect to the lower voltage limit.