To create a directory with the date and time as the name, In a batch file use:
Then in the same batch file use robocopy to copy files to the new directory
robocopy TEST %DirName% /e
you need to add your own paths and read the robocopy help for the right switches you need.
By default Robocopy copies only files that don't exist in the target directory but because you are creating a new directory every time it will copy every thing in TEST
You could use the /A switch which only copies files with the Archive attribute set.