@echo off
for /f "tokens=1-3 delims=. " %%a in ('date /t') do (set mydate=%%c-%%a-%%b)
for /f "tokens=1-2 delims=/:" %%a in ("%TIME%") do (set mytime=%%a%%b)

dir Directory1 /b > list
robocopy Directory1 Backup
for /f %%f in (list) do rename Backup%%f %%~nf%mydate%_%mytime%%%~xf