| 摘要 |
In the case of a method for charging accumulators, the charging current is supplied in two charging phases in accordance with the current characteristic shown in Figure 2. In the first charging phase, the charging current remains essentially constant: I<*> = II = Imax t </= tng 85% of the previously extracted charge quantity is inserted in the first charging phase. In the second charging phase, the charging current (IIIA, IIIB) is reduced until the self-discharge current IE is reached. A) The charging current IIIA is reduced at the start of the second charging phase in accordance with an exponential function: IIIA = II.e<-k2.(t-tng)> t >/= tng When the charging current IIIA reaches the value IE (IE: maintenance current), the charging process is completed. B) The charging current IIIB is reduced at the start of the second charging phase to half the charging current II, and, on reaching the charging limiting current, is in each case reduced by half again until the value IE is reached. <IMAGE>
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