Step function for battery module

Hello.

I would like to create a discharge and charge cycle by using a step function. It is for Li-ion battery.

I've managed to create only one pulse by define equation for discharge and charge:

disch_on step1((t_disch_stop-t)[1/s])
charge_on step1((t-t_disch_stop-t_ocp)[1/s])*step1((t_charge_stop+t_disch_stop+t_ocp-t)[1/s])

These equations create only one pulse but I would like to create several pulses. Could you please help me to go on with second step?

Thank you very much!