Abstract: A protection system for overcurrent protection in a battery system. The protection system can have a protection element for interrupting an electric current path in the battery system. The protection system can have an acquisition unit for determining acquisition information which is specific for an electric current of the current path. The protection system can have an electronic processing unit for performing a comparison of the acquisition information with an adaptable protection specification to detect an overcurrent condition. The electronic processing unit can be operatively connected to the protection element to activate the protection element in response to the comparison such that the interruption occurs upon positive detection of the overcurrent condition in accordance with an adjustable activating characteristic.

Abstract: A system for permanently marking at least one battery component includes at least one marking element which is assigned to the battery component. The system includes a battery management system for operating the battery component in dependence on a state of the marking element. At least one marking device can be electrically connected to the marking element in such a way that a permanent change in the state of the marking element can be carried out by the marking device. The marking element is provided outside the battery management system such that operation of the battery component is permanently adaptable by the change of state.

Abstract: The invention concerns a battery system (200) for a vehicle (1), preferably for an industrial truck, comprising: at least one rechargeable battery (210) for supplying at least a vehicle component (2) of the vehicle (1), a charging component (50) for mechanically (52) and electrically (53) charging connection with an external charging device (310) to charge the battery (210) through the charging device (310) in a state of charge, a safety device (60), which is arranged at least partially in the area of the charging component (50), for detecting the mechanical charging connection of the charging component (50) with the charging device (310), so that a safety interruption of the power supply of the vehicle component (2) can be performed in the charging state.

Abstract: The invention concerns a protection system (10) for overcurrent protection in a battery system (200), with: a protection element (70) for interrupting an electric current path (P) in the battery system (200), an acquisition unit (20) for determining acquisition information (E) which is specific for an electric current (I) of the current path (P), an electronic processing unit (50) for performing a comparison of the acquisition information (E) with an adaptable protection specification (S) to detect an overcurrent condition, wherein the processing unit (50) is operatively connected to the protection element (70) to activate the protection element (70) in response to the comparison such that the interruption occurs upon positive detection of the overcurrent condition in accordance with an adjustable activating characteristic.