Ps: he is not abusive because he is angry. He is angry because he is abusive.
His rage is deliberate, to scare and intimidate you. It's a control tactic.
Prosecute him if the police say its possible.
He will try to threaten you. Report that too.Do not back down. He means you harm and you've seen first hand that playing nice never you safe for long. You have to show you will accept police help.
If he threatens to harm himself, you don't reply. You simply call the ambulance services and tell them the situation. And that it may just be manipulation. They can decide to attend and if he is bullshitting or not. And he will be charged with wasting their time if he is. And he won't pull that bs again.
Ideally though once he is gone, he'll be told to stay away from you and you can block him. I'd try to go for full custody if I were you. Easier said than done of course.
But thr best thing for your child is to see how mother leave bullies. To be told that we do not stay with people who abuse us. And to have one safe home with a happy mother that he can retreat to even if he does have to keep seeing his dad from time to time.
Never allow him to be in your home again btw. Or one with you. Do any pick up or drop off of the kid in a public place. Ideally get a friend ir family member to do it if possible.
Tbh thr man belongs in jail. I sincerely hope you and the police manage to put him there.