Concerned Spouse,
Given what you have told us, I think a domestic violence shelter or a crisis hotline in your area will be able to help you out in at least find therapy this is of little to no cost. From your posts I get the feeling that there is more you are not telling us, because of the embarrassment of being in a domestic violence situation. They were "his"
doctors and "his" therapists that said that, do you think it is time to have someone to help advocate for you? Bipolar is not an excuse for abuse. Please if you feel that he is a danger to yourself or your children please seek legal help, and the domestic violence shelters can generally help with this as well.
I really do think therapy can really help you in defining and getting what a healthy relationship is, because unfortunately there is a tendency to have the same relationship with different people. So please really consider therapy, because you know you deserve better treatment.
I actually encourage you to not come to this website, because it is time for you to really focus on getting you in a healthy mind set, because this has to be wearing on you, and when you are dealing with another's illness it can be incredible handicapping in your own health journey.
Take Care of Yourself,
Navy