Patent ID: 10845418

Abstract:
A method and a device operate an energy storage cell having a cathode, an anode, an electrolyte, a first reference electrode which has a first capacity for storing an electric charge, and a second reference electrode which has a second capacity for storing an electric charge, the second capacity being larger than the first capacity. The method detects at least one electrode voltage between the one cathode or anode and the second reference electrode; determines the charge state of the energy storage cell using the at least one electrode voltage; detects a reference voltage between the second reference electrode and the first reference electrode; connects a current source to the first reference electrode and the second reference electrode such that the charge state of the first reference electrode and the second reference electrode changes; and separates the current source from the first reference electrode and the second reference electrode. The point in time when the current source is connected and separated to or from the first reference electrode and the second reference electrode depends on the result of a comparison between the reference voltage and a specified voltage value.