There is no need. virtualenvwrapper is not a replacement for virtualenv but a set of convenient shell functions for it. What do you expect PyCharm would do with virtualenvwrapper?
As @phd says in comments and also as mentioned in virtualenvwrapper docs, virtualenvwrapper includes wrappers for creating and deleting virtual environments and otherwise managing your development workflow. It is somehow created for making virtualenv easier to use.
virtualenvwrapperis not a replacement forvirtualenvbut a set of convenient shell functions for it. What do you expect PyCharm would do withvirtualenvwrapper?