Rechargeable battery cell and method for producing and operating a rechargeable battery cell
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorJan Philipp Schmidt
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Abstract
A rechargeable battery cell includes a cathode, an anode, an electrolyte, and a sensor that is arranged in the rechargeable battery cell. The sensor has at least two sensor electrodes and is accommodated in the rechargeable battery cell without a sheathing at least in sections. Moreover, the at least two sensor electrodes are operated in an electrical potential range that protects the sensor and/or the sensor electrodes against corrosion by the electrolyte. A method for producing and operating a rechargeable battery cell of this kind is also provided.
Claims13
An accumulator cell comprising:
- a cathode arranged at a first end of the accumulator cell;
- an anode arranged at a second end of the accumulator cell that is opposite to the first end;
- an electrolyte arranged inside of the accumulator cell;
- and
- a sensor having at least two sensor electrodes,
- wherein the sensor is arranged in a central portion of the accumulator cell and is completely surrounded by and in direct contact with the electrolyte except for end portions of the at least two sensor electrodes which project outside of the electrolyte,
- wherein the at least two sensor electrodes are operated in an electrical potential range that protects the sensor and/or the sensor electrodes from corrosion by the electrolyte,
- wherein the accumulator cell, in which the sensor is arranged, is a lithium ion accumulator, and
- wherein a housing of the sensor is completely surrounded by and directly in contact with the electrolyte.
A method for the manufacture and operation of an accumulator cell, the method comprising the acts of:
- arranging a sensor in an interior of the accumulator cell so that the sensor is directly exposed to electrolyte in the accumulator cell;
- connecting sensor electrodes of the sensor to an anode and/or a cathode of the accumulator cell;
- and
- operating the sensor electrodes in an electric potential range that protects against corrosion caused by the electrolyte;
- wherein the accumulator cell, in which the sensor is arranged, is a lithium ion accumulator;
- and
- wherein a housing of the sensor is completely surrounded by and directly in contact with the electrolyte.
Dependencies are inferred from the claim text.