VERFAHREN UND SCHALTUNGSANORDNUNG ZUR ÜBERWACHUNG EINER BATTERIE AUF IHREN BETRIEBSZUSTAND UND IHRE BEREITSCHAFT.

摘要

The invention relates to a method and a circuit arrangement (14) for monitoring the functionality (CR) and readiness (tSt) of a battery (4), prepared actual values of the battery current (IB) and battery voltage (UB) being averaged and the operating mode (LA, En) being confirmed from the direction of the battery current (IB). According to the invention, a discharge power (PEn) is calculated during discharge operation (En) from the averaged actual values of the battery current (IBm) and the battery voltage (UBm) and being compared with stored discharge power characteristic families as a function of the averaged cell voltage actual value (UBZ), the consumed capacity (CEn) determined by means of the characteristic (PEnZ) being subtracted from the maximum capacity (Cmax) and this determined residual capacity (CR) being multiplied by a discharge time (tp) which is proportional to the calculated discharge power (PEnZ). The functionality and readiness of a battery (4) can thus be monitored without major cost with the aid of only one performance graph. ……