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    • 1. 发明申请
    • ENERGY STORAGE DEVICE, ENERGY STORAGE SYSTEM WITH THE SAME AND CONTROL METHOD, PRE-CHARGING CIRCUIT FOR AN ENERGY STORAGE DEVICE
    • US20230128816A1
    • 2023-04-27
    • US17966102
    • 2022-10-14
    • Torqeedo GmbH
    • Jens Biebach
    • H02J7/00H01M50/204H01M50/296H01M10/44H01M10/42H01M50/512B60L58/18
    • The present disclosure relates to an energy storage device for a water vessel, the energy storage device comprising: a first connection and a second connection, an energy storage unit with a first pole and a second pole, a first connection line between the first pole and the first connection and a second connection line between the second pole and the second connection, wherein the first connection line has a first node, which is connected with the first pole, and a second node, which is connected with the first connection, and wherein the second connection line has a fourth node, which is connected with the second pole and the second connection, a third connection line between the first node and the second node, with a third node and an inductance between the third node and the second node, and a fourth connection line between the third node and the fourth node with a free-wheeling diode, which is arranged for a current from the fourth node to the third node in forward direction, a first switching unit in the first connection line between the first node and the second node for switching a current from the first node to the second node and a third switching unit in the third connection line between the first node and the third node for switching a current from a first node to the third node, and a control unit, which is configured for controlling the first switching unit and/or the third switching unit for limiting the strength of a discharge current for the energy storage unit to a predefined discharge threshold value. The disclosure further relates to an energy storage system with at least two such energy storage devices and control method for the energy storage device and for the energy storage system and a pre-charging circuit.