Modular partitioning wall of a vehicle and method for the configuration of a loading space

The partition has a vertical fixed part (CF) comprising a recess, and a movable part comprising a movable lower panel (PMI), a movable central panel (PMM) and a movable upper panel (PMS) articulated with each other. The movable part occupies a locked configuration in which the central panel is positioned to close the recess and a storage configuration in which the panels and the fixed part are arranged to form a storage cavity with parallelepiped volume. The cavity is accessible through the recess of the fixed part. An independent claim is also included for a method for configuring a storage cavity in a motor vehicle comprising a modular partition.