Hi everyone,

I’m currently working on the simulation of a 4s3p battery pack using Molicel INR-21700-P45B cells (NCA chemistry). The pack undergoes full charge and discharge cycles (from 3.0 V to 4.2 V per cell) under natural convection conditions, for 10 cycles at both 1C and 1.5C rates.
The charge protocol includes CCCV charging, followed by a 30-minute rest, then CC discharging, and another 30-minute rest. In the simulation, the peak temperature during discharging is higher than during charging. However, in our experimental results, the opposite is observed—the peak temperature is higher during charging.
For the simulation, we used the OCV curve of a single cell multiplied by 4 for the 4s configuration.
Has anyone encountered a similar issue or could provide insights into why the simulated thermal behavior might differ from experimental results?Hi everyone,

I’m currently working on the simulation of a 4s3p battery pack using Molicel INR-21700-P45B cells (NCA chemistry). The pack undergoes full charge and discharge cycles (from 3.0 V to 4.2 V per cell) under natural convection conditions, for 10 cycles at both 1C and 1.5C rates.
The charge protocol includes CCCV charging, followed by a 30-minute rest, then CC discharging, and another 30-minute rest. In the simulation, the peak temperature during discharging is higher than during charging. However, in our experimental results, the opposite is observed—the peak temperature is higher during charging.
For the simulation, we used the OCV curve of a single cell multiplied by 4 for the 4s configuration.
Has anyone encountered a similar issue or could provide insights into why the simulated thermal behavior might differ from experimental results? Hi everyone,

I’m currently working on the simulation of a 4s3p battery pack using Molicel INR-21700-P45B cells (NCA chemistry). The pack undergoes full charge and discharge cycles (from 3.0 V to 4.2 V per cell) under natural convection conditions, for 10 cycles at both 1C and 1.5C rates.
The charge protocol includes CCCV charging, followed by a 30-minute rest, then CC discharging, and another 30-minute rest. In the simulation, the peak temperature during discharging is higher than during charging. However, in our experimental results, the opposite is observed—the peak temperature is higher during charging.
For the simulation, we used the OCV curve of a single cell multiplied by 4 for the 4s configuration.
Has anyone encountered a similar issue or could provide insights into why the simulated thermal behavior might differ from experimental results? simscape, simulation MATLAB Answers — New Questions

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