Electrical Test Platform
- 150+ channels for small size cells (< 10 Ah)
- 150+ channels for Lithium Batteries
- Climatic Chambers (-40 - + 80°C)
GT-SUITE System Model
- E-powertrain
- Cabin
- Weather and charging data
- Driver behavior
Prediction of Behavior
- Investigate the impact of the battery degradation on the vehicle range and performance
- Temperature and driver dependencies
- Years of virtual operation
Aging Analysis
37 Ah cell :Aging analysis.
600 cycles at 37A constant current charge, 4,2V constant voltage charge.
The cell wasn’t new, it was stored around 18 months at 20°C before our test, and this was also simulated.
Transient Charge and Discharge at Difference C-Rates
37 Ah cell: Almost empty cell at the beginning, then cycles with the same CCCV procedure as the aging, except for the C-rate : C/5 for the first cycle, then 1C, C/2, 2C, a pause and 1C.
Test ran at 25°C controlled ambient temperature.
Transient Temperature Evolution
The voltage test was repeated for 4 different temperatures : 25°C, 15°C, 35°C and 5°C. Each « plateau » level has the 4 first C-rates as the previous test (C/5,1C, C/2, 2C), the short sections are 25°C-1C-cycles for control.
