Monitoring a state variable of at least one battery cell of a battery
AssigneeAudi AG
InventorsMichael Hinterberger, Berthold Hellenthal
Life of this patent
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Abstract
A method for monitoring a state variable of at least one battery cell of a battery. The battery has at least two battery cells that are arranged adjacent to one another. A first electrically conductive surface is provided at a boundary surface of a first battery cell and a second electrically conductive surface is provided at a boundary surface of a second battery cell. The electrically conductive surfaces are arranged electrically insulated from each other. An electrical voltage is applied between the two electrically conductive surfaces. An electrical variable produced due to an effect of the electrical voltage is analyzed. The state variable on the basis of the analysis is determined.
Claims11
A method for monitoring a state variable of at least one battery cell of a battery, wherein the battery has at least two battery cells that are arranged adjacent to one another, comprising:
- providing a first electrically conductive surface at a boundary surface of a first of the at least two battery cells and providing a second electrically conductive surface at a boundary surface of a second of the at least two battery cells, wherein the electrically conductive surfaces are arranged electrically insulated from each other;
- providing a wireless communications layer enabling communication between and with the at least two battery cells;
- applying an electrical voltage between the two electrically conductive surfaces;
- analyzing an electrical variable produced due to an effect of the electrical voltage;
- and
- determining the state variable on the basis of the analysis.
A monitoring device for monitoring a state variable of at least one battery cell of a battery, wherein the battery has at least two battery cells that are arranged adjacent to one another, wherein the monitoring device comprises a means for communicating with a wireless communications layer and is designed to apply an electrical voltage between a first electrically conductive surface, which is provided at a boundary surface of a first of the at least two battery cells, and a second electrically conductive surface, which is provided at a boundary surface of a second of the at least two battery cells, which is electrically insulated from the first electrically conductive surface, to analyze an electrical variable produced due to an effect of the electrical voltage, and to determine the state variable on the basis of the analysis.
A battery having at least two battery cells arranged adjacent to one another, comprising:
- a boundary surface of a first of the at least two battery cells has a first electrically conductive surface and a boundary surface of a second of the at least two battery cells has a second electrically conductive surface, wherein the electrically conductive surfaces are arranged electrically insulated from each other, wherein the battery has a monitoring device, which comprises a means for communicating with a wireless communications layer and is designed to apply an electrical voltage between the two electrically conductive surfaces, to analyze an electrical variable produced due to an effect of the electrical voltage, and to determine the state variable on the basis of the analysis.
A motor vehicle with an electrical drive device and with an electrical system connected to the electrical drive device for supplying the electrical drive device with electrical energy, which has a battery that has at least two battery cells that are arranged adjacent to one another, comprising:
- a boundary surface of a first of the at least two battery cells has a first electrically conductive surface and a boundary surface of a second of the at least two battery cells has a second electrically conductive surface, wherein the electrically conductive surfaces are arranged electrically insulated from each other, wherein the battery has a monitoring device that comprises a means for communicating with a wireless communication layer and is designed to apply an electrical voltage between the two electrically conductive surfaces, to analyze an electrical variable produced due to an effect of the electrical voltage, and to determine the state variable on the basis of the analysis.
Dependencies are inferred from the claim text.