Charging system and charging method for charging a battery of a vehicle and vehicle with such a charging system

摘要

Charging system for charging a battery (1) of a vehicle, with a converter (2), which is connected to a battery (1) on its DC voltage side, for converting the DC voltage supplied by a battery (1) into a voltage for an electric motor (3) Variable AC voltage that can be used to drive the vehicle, a switching unit (4; 15, 16; 17) that is connected to the AC side of the converter (2) and to the electric motor (3), and at least one power supply charging connection (12), which are connected to the AC voltage side of the converter (2) and to the switching unit (4; 15, 16; 17), for connecting an external power supply network (7) to the converter (2), the switching unit (4; 15, 16; 17) is provided for separating the connection between the converter (2) and the electric motor (3) before the converter (2) is used as a charger for the battery (1), a voltage adjustment module (9) for the converter (2) Creation of a Ladec Characteristic of the charging system according to the charging requirements of the battery (1) is provided, and wherein the converter (2) comprises an intermediate circuit (10), the value of the voltage is increased above the value of the voltage of the external power supply network (7), characterized in that the converter is designed in such a way that no high currents flow to the external power supply network (7) when the power supply charging connection (12) is plugged in, the charging system comprising a release switch device for unlocking a fuel filler flap of the vehicle and for unlocking the at least one power supply Charge connection (12) when the voltage increasing device has increased the voltage of the intermediate circuit (10) to a higher voltage than the voltage of the external power supply network (7).