Battery system e.g. lithium-ion secondary battery system for e.g. electric car, has current limiting unit that is arranged to be activated in the event of short circuit, and is deactivated during normal operation of the battery

摘要

The battery system (300) has several battery cells (101) for providing an output voltage at the output terminals (104, 105). A circuit breaker (102) is arranged between battery cells and outputs respectively. A current limiting unit (200) which is connected in series with circuit breaker and is arranged to be activated in the event of a short circuit. The current limiting unit is deactivated during normal operation of the battery. Independent claims are included for the following: (1) method for limiting the current of battery system; and (2) car.