Battery exchange system and method

A battery exchange method for an electric vehicle comprising a battery receiving unit fixed at a bottom side of the vehicle and comprising a housing with an opening at a bottom side of the housing for at least partially receiving the battery unit in the housing through the opening, wherein the battery receiving unit has a central axis which extends through the opening and is further provided with second engagement elements arranged within the housing, the method comprising:

• i) placing a battery unit below the opening of the housing, such that, wherein viewed in projection onto a plane normal to the central axis, the battery unit is completely overlapped by the opening, the battery unit comprising first engaging elements for engagement with said second engagement elements,
• ii) using a lifting device external to the electric vehicle, lifting the battery unit towards the opening to an unmounted position;
• and
• iii) moving each of the second engagement elements into engagement with a corresponding one of said first engagement elements, and subsequently driving further movement the each of the first and second engagement elements relative to each other along an associated sloping path in order to lift the battery unit from the unmounted position to the mounted position, wherein each of said associated sloping paths slopes with respect to a plane normal to the central axis.