Battery modules are assembled from individual cells and electrically connected in series or parallel. The quality of the welded connections and the correct arrangement of the cells is verified by an AC internal resistance measurement.
In the final test, it should also be verified whether the module is suitable for operation; this is usually done by a DC internal resistance measurement.
By replacing the DC pulse measurement with an AC frequency measurement, an overall test can be performed with only one device.
Recommended devices: MBT-M, BIM2B