Circuit Device Used For Outputting Current And Current Adjusting Method

Abstract

The invention relates to a circuit device. The circuit device is used for connecting a plurality of storage battery units and outputting an adjustable total current of a plurality of the storage battery units from an output terminal of the circuit device. Th circuit device comprises a shunt circuit of a plurality of current paths connected to the output terminal. The storage battery units are connected in the plurality of the current paths. A plurality of switch devices are in series connection in each of the current paths. At least one switch devices is used for selectively incorporating the storage unit to be connected in the input terminal of the plurality of the storage battery units into one part of the corresponding current path or alternatively allowing the part of the current path to be a short circuit. At least one first switch device of a plurality of the switch devices in each current path is configured to an adjustable DC / DC-conversion device based on rated current set value of the corresponding current path or to have adjustable DC / DC-conversion device. The invention also relates to a method of adjusting the current outputting through the output terminal of the circuit device.

Description

technical field [0001] The invention relates to a circuit arrangement for connecting a plurality of battery cells and for outputting an adjustable total current of the plurality of battery cells at an output of the circuit arrangement, wherein the circuit arrangement has a plurality of battery cells connected to the output A parallel circuit of current paths in which a plurality of battery cells can be connected. Background technique [0002] There is a continuously increasing demand for battery systems consisting of a number of battery cells connected in parallel and in series, which are used in stationary applications such as wind power plants and emergency power systems or also in vehicles . All these applications place high demands on the reliability and fail-safety of the battery system. A complete failure of the voltage supply via the battery system can result in the failure of the entire application. Battery systems are therefore used in wind power plants in order ...

AI Technical Summary

Problems solved by technology

[0005] In the case of a modularly constructed battery system in which simple and operationally safe replacement of each battery cell designed as a module is provided, however, due to the high flexibility of the system, no easy replacement of the system is possible. Regulation of the total current at the output (the so-called total output current)

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