Device (100; 200; 310; 400; 500; 600; 600') for supplying energy to a plurality of energy storage components and for providing energy stored within the energy storage components, comprising: a first energy storage terminal (130a; 530a; 630a) for connecting a first energy storage component; a second energy storage terminal (130b; 530b; 630b) for connecting a second energy storage component; a further terminal (150; 530d-e; 650) for supplying and/or providing energy; a first coupling mechanism configured to bidirectionally couple the first energy storage terminal to the shared magnetic flux; a second coupling mechanism configured to bidirectionally couple the second energy storage terminal to the shared magnetic flux; a further coupling mechanism (140; 520d-e) configured to couple the further terminal to the shared magnetic flux; the device comprising galvanic separation of the first energy storage terminal and of the second energy storage terminal as well as of the further terminal; the device being configured such that coupling and removal of energy storage components to the shared magnetic flux together with an associated coupling mechanism is possible during operation, characterized in that said coupling involves mechanically guiding a coupling inductance, which is coupled to the first coupling mechanism, to that area wherein there is the shared magnetic flux, together with the first coupling mechanism and the first energy store connected to the first energy storage terminal, and in that said removal involves mechanically guiding the coupling inductance, which is coupled to the first coupling mechanism, away from that area wherein there is the shared magnetic flux, together with the first coupling mechanism and the first energy store connected to the first energy storage terminal; and in that the device is configured such that coupling or removal may be performed while an exchange of energy continues to take place between one or more energy storage components via the shared magnetic flux. a first energy storage terminal (130a; 530a; 630a) for connecting a first energy storage component; a second energy storage terminal (130b; 530b; 630b) for connecting a second energy storage component; a further terminal (150; 530d-e; 650) for supplying and/or providing energy; a first coupling mechanism configured to bidirectionally couple the first energy storage terminal to the shared magnetic flux; a second coupling mechanism configured to bidirectionally couple the second energy storage terminal to the shared magnetic flux; a further coupling mechanism (140; 520d-e) configured to couple the further terminal to the shared magnetic flux; the device comprising galvanic separation of the first energy storage terminal and of the second energy storage terminal as well as of the further terminal; the device being configured such that coupling and removal of energy storage components to the shared magnetic flux together with an associated coupling mechanism is possible during operation, characterized in that said coupling involves mechanically guiding a coupling inductance, which is coupled to the first coupling mechanism, to that area wherein there is the shared magnetic flux, together with the first coupling mechanism and the first energy store connected to the first energy storage terminal, and in that said removal involves mechanically guiding the coupling inductance, which is coupled to the first coupling mechanism, away from that area wherein there is the shared magnetic flux, together with the first coupling mechanism and the first energy store connected to the first energy storage terminal; and in that the device is configured such that coupling or removal may be performed while an exchange of energy continues to take place between one or more energy storage components via the shared magnetic flux.