I totally agree with
Aprill and Liz.
You seem to realise that beating you is wrong, but also that he'll just stop and it will be hunky-dory again.
I really don't care what his past issues are - there is absolutely no excuse for beating up women. You need to get out.
There is plenty of support here and on other websites for people in your situation. You are not alone, but the first step is realising that he wont ever change. You need to protect yourself, and do so immediately.
I am sickened by his actions. I know 'you love him' but he obviously doesn't love and respect you.
That really is all I'm going to say at this point since I think you know exactly what I'm thinking. I really am worried about your health and safety and I'm sure some of the other guys on this board are too.
Best of luck