Why Unity does not generate *.csproj and *.sln files in batch mode

Whenever I open a Unity project, it will generate .csproj and .sln files in the unity project folder if they don't already exist.

However, when I perform a build from the command line using batch mode, these files do not get generated.

I would like to know why this is, and whether there are is anything generated inside of Library / Temp which holds this information instead.