"Rest" ignored in experiment

[sklein-ise]

Hello,

I noticed that when using a parameter set with the experiment class the "Rest" command does not work. It keeps discharging the battery by the set "current function" value. Is this a mistake or am I doing something wrong?

Thanks in advance!
Siri

import pybamm
import matplotlib.pyplot as plt

experiment = pybamm.Experiment(
[("Rest for 50 minutes")] * 1,
)

model = pybamm.lithium_ion.DFN()

param = model.default_parameter_values
param.process_model(model)

sim = pybamm.Simulation(model, experiment=experiment)
sim.solve()

solution = sim.solution

fig = plt.figure("Time")
t_sol = solution["Time [s]"].entries
plt.plot(t_sol, solution"Terminal voltage [V]",'--', color = 'red', label = 'gitt NMC_gra')
plt.xlabel("Time [s]")
plt.ylabel("Voltage [V]")
plt.tight_layout()
plt.show()

[brosaplanella]

Hi Siri! I think the issue is that you processed the model with the parameters. Try instead running this:

import pybamm
import matplotlib.pyplot as plt

experiment = pybamm.Experiment(
[("Rest for 50 minutes")] * 1,
)

model = pybamm.lithium_ion.DFN()

param = model.default_parameter_values

sim = pybamm.Simulation(model, parameter_values=param, experiment=experiment)
sim.solve()

solution = sim.solution

Note that because you are using the default parameter values you could just not define them and run the simulation as

sim = pybamm.Simulation(model, experiment=experiment)

(if not specified it uses the default parameters).

[sklein-ise]

Thanks! Now it works. I didn't realise you don't need to process the model after updating the parameters.