I have had this happen to me before...
I think this may be a bug...

during the batch render it says rendering ....render complete..
in about 3 seconds. And you say wow that was a fast render for
1000 frames with raytracing. Of course no frames render.
(and there is no error feedback, which makes the problem hard to diagnose)

In the render camera's attributes make sure that 'renderable'
is checked on.

Ocaissionally something happens, or a bug causes it to become unchecked for no reason. sometimes when you make a new camera it is unckecked.

Now If I ever have any render issues I always double check that attribute.

Hope this helps you
Joe