A few things:
1) You asked for help with a diagnosis, yet the only symptoms you mention is uncontrolled anger; that's not enough to work with. What other symptoms is he showing?
2) Loving someone with bipolar disorder (assuming for the moment that your bf does have it) is just about the hardest job in the world. Most people will tell you to run far and run fast, that bipolars are just manipulative and abusive. Me, I'm not going to tell you that--but then I'm a schizophrenic in a relationship with a bipolar. Stop by the Life, Love, and Bipolar site and do some reading.
3) If he's violent towards you, it needs to be over. Abuse is not love, and tolerating it isn't love either. You deserve better. And you deserve to be safe.
Luck to you
~~Ozy