Module Details
25P 2S modules (7.4V nominal, 8.4V max, 5V fully discharged)
25 * 3.45Ah = 86.25Ah per module
29 modules to test in total, 18 will be used in the car
Test Requirements
Discharge modules at 100A continuous (for 1 full capacity cycle)
Charge at 20A or more (datasheet says 1.5-3.5A/cell)
Roughly 900W power dissipation during discharge
Measure the following parameters
Capacity of the module
Voltage of each series group of cells (2)
4 thermistor in each module
Internal Resistance (DC), AC would be nice Single Cell Testing - Data Processing Guide Individual Cell Testing Evaluation
Code for single cells is already built
Test Equipment
Keysight N7909A x2?
Keysight N7000 series power supply - model TBD
Data Acquisition Unit (DAQ970A with a plug-in module, model DAQ970A)
Outputs
Number for cell capacity
Number for DC and AC internal resistance
Graphs of temperature and voltage over the entire discharge