A method of switching a plurality of differently shaped battery cells of a battery and battery system with a battery having a plurality of differently shaped battery cells

摘要

The present invention relates to a method for switching a plurality of battery cells (24, 27) of a battery (111), wherein the plurality of battery cells (24, 27) are connectable in series, each with a corresponding first probability P1i to the battery (111). are electrically coupled and each electrically decoupled from the battery (111) with a corresponding second probability P2i. In this case, the plurality of battery cells (24, 27) form a group of battery cells (24, 27), the first subgroup (114) of mutually identical battery cells (24) and / or a second subgroup (117) of mutually identical and opposite the battery cells (24) of the first subgroup (114) differently shaped battery cells (27). Further, for each battery cell (24) of the first subset (114), a quality factor G1i is calculated as one of a current value of a battery current flowing through the battery (111), and / or for each battery cell (27) of the second subgroup (117) a quality factor G2i is calculated as a second function dependent on the current value of the battery current and different from the first function. Also, for each battery cell (24) of the first subgroup (114) and / or for each battery cell (27) of the second subgroup (117), the corresponding first probability P1i and the corresponding second probability P2i are respectively dependent on the calculated quality factor G1i, G2i the corresponding battery cell (24, 27) determined.