Electric energy storage device and method for operating an electric energy storage device
AssigneeRobert Bosch GmbH
InventorManfred Hellmann
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Abstract
The invention relates to an energy storage device and a method for operating an energy storage device comprising a plurality of energy storage modules. In order to adjust the output voltage to the energy storage device, one or more energy storage modules is/are connected in series. According to the invention, the series-connected energy storage modules are selected in accordance with the state of charge and at least one other operating parameter in order to be able to use the individual energy storage modules in a particularly efficient manner.
Claims10
An electric energy storage device for providing a predetermined output voltage, comprising:
- a plurality of energy storage modules;
- and
- a control device configured to
- ascertain a state of charge and at least one further operating parameter for each of the plurality of energy storage modules via at least one selected from a group consisting of a voltage detector and a maintenance prognosis device,
- calculate a number of required energy storage modules in accordance with the predetermined output voltage,
- select the calculated number of required energy storage modules from the plurality of energy storage modules using the ascertained state of charge and the at least one further operating parameter, and
- connect the selected energy storage modules in series.
A method for operating an electric energy storage device for generating a predetermined output voltage, comprising the following steps:
- providing a plurality of energy storage modules;
- ascertaining a state of charge for each of the plurality of energy storage modules;
- ascertaining at least one further operating parameter for each of the plurality of energy storage modules;
- calculating a number of required energy storage modules in accordance with the predetermined output voltage;
- selecting energy supply modules from the plurality of energy supply modules using the calculated number of required energy storage modules, the ascertained state of charge of the energy storage modules, and the at least one further operating parameter of the energy storage modules;
- and
- connecting the selected energy storage modules in series.
Dependencies are inferred from the claim text.