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Smoothing battery current changes

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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.

0 Replies Last Post Sep 24, 2014, 5:28 p.m. EDT
COMSOL Moderator

Hello Corey Zusin

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