Battery cell i.e. lithium ion battery cell, for e.g. electromotively powered motor car, has semiconductor element connected between positive pole and negative pole in electrically conductive manner

摘要

The cell has a semiconductor element connected between a positive pole (20) and a negative pole (30) in an electrically conductive manner. The semiconductor element is designed as a transistor (40) or a varistor. A collector (41) and an emitter (42) of the transistor are connected to the positive pole or the negative pole, respectively. A base (43) of the transistor is connected to a potential divider (50). Contacts of the varistor are attached at the positive pole and the negative pole. The transistor or the varistor is integrated in a housing (10). Independent claims are also included for the following: (1) a motor car (2) a method for increasing charge of a battery cell (3) a method for leveling voltage of battery cells.