I found a macro that would have to be adapted, to export all the files from SolidWorks to ParaSolid files while keeping the name and adding the revision (which is not interesting here):
You can set export options for SolidWorks part or assembly documents exported as Parasolid files.
To set the Parasolid export options:
Open the SolidWorks document that you want to export as a Parasolid file.
Click File , Save As.
The Save As dialog box appears.
Select Parasolid (*.x_t) or Parasolid Binary (*.x_b) from the Save As list , and then click Options.
The Export Options dialog box appears, and the Parasolid option is selected on the File Format tab .
Select from the following options:
Version. Select the type supported by the target system.
Flatten the assembly hierarchy (assemblies only). Flattens the assembly to a part body level only. A flattened file contains a 1st level assembly and a set of parts containing imported features.
Exit coordinate system. Select a coordinate system for export. If you select -- by default -- no transformation matrix is applied.
Click OK, and then click Save to export the document.