Method for propelling and manufacturing of a vehicle comprising a power train with an electric motor and a vehicle comprising a power train with an electric motor

A method for manufacturing of a vehicle comprising a power train with an electric motor configured to be electrically connected to a location in said vehicle, wherein the location is configured for mounting of an energy supply unit and electrically connecting the energy supply unit to the electric motor to thereby supply electric power to drive said electric motor during normal operating conditions of the vehicle, wherein the method comprises:

• propelling the vehicle during said manufacturing of the vehicle by:
• connecting an external electric power source to a power connection element mounted on said vehicle, wherein said power connection element electrically connects said electric motor to said location, such that electricity from the external electric power source can be supplied to both the electric motor and to the location via the power connection element;
• detecting, via a detecting unit connected to said power connection element, connection of the external electric power source to said power connection element;
• wherein when (i) the energy supply unit is not electrically connected to the location and (ii) the external electric power source is detected as being connected to said power connection element, disconnecting said location electrically from said power connection element and the electric motor, so as to isolate the location electrically from the external electric power source and the electric motor;
• and
• propelling the vehicle by means of the electric motor powered by electricity from said external electric power source, while the energy supply unit is not electrically connected to the location in the vehicle and the location is not electrically connected to said power connection element and the electric motor.

A vehicle comprising a power train with an electric motor configured to be electrically connected to a location in said vehicle, wherein the location is configured for mounting of an energy supply unit and electrically connecting the energy supply unit to the electric motor to thereby supply electric power to drive said electric motor during normal operating conditions of the vehicle, wherein the vehicle comprises:

• a power connection element arranged for connecting an external electric power source to a power connection element mounted on said vehicle, wherein said power connection element electrically connects said electric motor to said location, such that electricity from the external electric power source can be supplied to both the electric motor and to the location via the power connection element;
• a detecting unit connected to said power connection element and configured for detecting connection of the external electric power source with said power connection element;
• and
• a disconnecting device connected to said power connection element, to said electric motor, and to said location and arranged to, when (i) the energy supply unit is not electrically connected to the location and (ii) the external electric power source is detected as being connected to said power connection element, disconnect said location electrically from said power connection element and the electric motor in said vehicle intended for mounting of the energy supply unit, so as to isolate the location electrically from the external electric power source and the electric motor and in order to accomplish a direct connection between the power connection element and the electric motor to enable propelling of the vehicle by means of the electric motor powered by electricity from said external electric power source, while the energy supply unit is not electrically connected to the location in the vehicle and the location is not electrically connected to said power connection element and the electric motor.