Method for determining effective and actual capacity of accumulator, particularly lithium-ion battery, involves determining initial value of open-circuit voltage, and changing primary load by load difference value

摘要

The method involves determining an initial value (U-1) of open-circuit voltage. A primary load (Q-1) is changed into a secondary load (Q-2) by a load difference value. The secondary load is stored in an accumulator. A final value (U-2) of the open-circuit voltage is determined after changing the load. An effective capacity of a predetermined relationship between an effective capacity of a battery, a charge difference and an open-circuit voltage difference from the difference between the initial and final value of open-circuit voltage, is determined.