I've been having issues with the capacity fade model and I think I may have narrowed down the problem.
See the model in question here: www.comsol.com/model/capacity-fade-of-a-li-ion-battery-12667
I am trying to increase the number of cycles, and I usually encounter errors in the transition between constant voltage discharge and constant current charge. The abrupt change in current density from ~+0.1 A/m^2 to 10 A/m^2 usually results in a lot of error and a large voltage spike which completely interrupts the charging-discharging cycle determined using the events interface.
As I understand it, the discontinuity of the current input is not something COMSOL likes.
I see that there are smoothing functions available, but I am not sure how to use them in concert with the events system used to determine the current load in this model. Any help would be appreciated.
See the model in question here: www.comsol.com/model/capacity-fade-of-a-li-ion-battery-12667
I am trying to increase the number of cycles, and I usually encounter errors in the transition between constant voltage discharge and constant current charge. The abrupt change in current density from ~+0.1 A/m^2 to 10 A/m^2 usually results in a lot of error and a large voltage spike which completely interrupts the charging-discharging cycle determined using the events interface.
As I understand it, the discontinuity of the current input is not something COMSOL likes.
I see that there are smoothing functions available, but I am not sure how to use them in concert with the events system used to determine the current load in this model. Any help would be appreciated.