Abstract: The present disclosure relates to a power supply system (100), which comprises a high voltage battery pack (110) comprising a plurality of battery modules (102), which are electrically connected in series to form the high voltage battery pack (110), which is configured to output a predetermined high voltage as a sum of module voltages provided by the plurality of battery modules (102). The power supply system (100) further comprises a low voltage output terminal (116a, 116b), which is configured to output a predetermined low voltage to at least one electric load, and a voltage converter network (106), which is configured to electrically insulate the low voltage output terminal (116a, 116b) from the high voltage battery pack (110) and to convert at least a part of the module voltages into the predetermined low voltage.

Abstract: The present invention relates to a contactor device (100), which is capable of changing a connection state of at least two battery modules (502(1), 502(2)) of a high voltage energy storage system (10) between a series connection and a parallel connection, and to an energy storage system (10) comprising the contactor device (100). The contactor device (100) comprises two first terminals (102, 104) for electrically connecting at least one of a load and a charger, two second terminals (106, 108) for electrically connecting a first battery module (502(1)), and two third terminals (110, 112) for electrically connecting a second battery module (502(2)).

Abstract: The present invention relates to a contactor device for high voltage applications, an energy storage system comprising the contactor device and a corresponding method for controlling the contactor device. A contactor device (100) comprises at least one fixed contact (106), at least one moveable contact (108), which is configured to move between an open position and a closed position, wherein in the closed position, the at least one moveable contact (108) electrically contacts the at least one fixed contact (106), and at least one first actuator (110, 120), which is configured to reversibly move the at least one moveable contact between the open position and the closed position. The contactor device (100) further comprises at least one second actuator (202) which is configured to move the at least one fixed contact (106) into a fired position, wherein in the fired position, the at least one fixed contact (106) is permanently disconnected from the at least one moveable contact (108).

Abstract: A resistor arrangement having a first electrically conductive connection element and a second electrically conductive connection element, a first resistance element which is electrically conductively connected to the first connection element, a second resistance element which is electrically conductively connected to the second connection element, an electrically conductive intermediate element arranged between the first resistance element and the second resistance element and connected with these resistance elements in an electrically conductive manner, wherein the connection elements, the resistance elements and the intermediate element are arranged side by side in a row. The connection elements and the intermediate element on the one hand and the resistance elements on the other hand formed of different materials, wherein the material of the first resistance element differs from the material of the second resistance element.