Patent ID: 11946978
Assignee: SIEMENS AKTIENGESELLSCHAFT
Field: Measurement (Instruments)
Classification: CPC G  H  Y | IPC G  H

Claim 13:
14. A non-transitory computer memory storing a set of instructions directly loadable into a memory of a programmable computing unit, the set of instructions when executed by a processor causing the processor to:
measure a plurality of load cycles of the battery cell using a high-precision coulometry apparatus to obtain a plurality of current values;
repeat the measurement until an abort criterion is met;
based on the result of the measurement, determine a first value and a second value for a discharge capacity of the battery cell using a first and a second calculation rule;
wherein a calibration of the current measurement is input differently into the first calculation rule and the second calculation rule; and
carry out an optimization method to determine a calibration of the current measurement, by achieving the greatest match between the first discharge capacity and the second discharge capacity;
determine an aging criterion for the battery cell based on the result of the measurement; and
sort the battery cell into one of several classification ranges based on the aging criterion.