Power supply device, power supply unit and vehicle

Abstract

The invention relates to a power supply device for a vehicle, comprising a contact device (1) and a guide device (2), wherein the guide device (2) is connected to the contact device (1) and can be connected to a power supply device, and wherein, in order to form an electrical contact between the contact device (1) and a vehicle, the contact device (1) can be lowered towards the vehicle by means of the guide device (2).It is proposed that the contact device (1) is connected to the guide device (2) via at least a first spring device (16) with at least a first spring (22), wherein the at least first spring (22) has a first spring tension in a first deflection state of the contact device (1) and a second spring tension in a second deflection state of the contact device (1) that is lowered relative to the first deflection state, wherein the first spring tension and the second spring tension are of different magnitudes. This enables precise adjustment of the contact force between the contact device (1) and the vehicle.