You want to be careful, the ransomware viruses are annoyingly good at finding drives that are accessible to the user and encrypting them too.
When we were hit at work, one user was infected and everything that user had write access over was encrypted. The backups were safe because they were handled by a different user and copied to a resource that normal users don't see.
You might be able to replicate this sort of set up by running this windows file history thing as a Local Administrator with a drive letter mapped to a backup drive, but not making that backup drive available to your normal everyday account.
Or you might not.. but that's what I'd try and do in a home setup with files I cared about.