Preferred operating gradient determining method for use during accomplishment of life span presetting for electrical energy storage unit, involves providing of present life span status of electrical energy storage unit

摘要

The method involves providing of a present life span status of the electrical energy storage unit. A life span goal for the electrical energy storage unit is set up as a pre-determined limit in a pre-determined metrics with a pre-determined life span status of the electrical energy storage unit. A gradient of the life span status is determined concerning the pre-determined metrics, which converges the life span status of the electrical energy storage unit for the life span goal.