Circuit arrangement for supplying an electrical vehicle component part of a motor vehicle with a dangerous contact operating voltage and motor vehicle and method

A motor vehicle, comprising:

• an electrical vehicle component;
• and
• a circuit configuration for supplying said electrical vehicle component part with an operating voltage, the operating voltage having a voltage value that is greater than a predetermined limit value, said circuit configuration containing:
• a source circuit for generating the operating voltage;
• two line elements for transmitting the operating voltage to said electrical vehicle component part;
• a reference contact for connecting said circuit configuration to a reference-ground potential of an environment of said circuit configuration;
• and
• said source circuit configured, in order to generate the operating voltage, to generate a first component voltage between a first line element of said two line elements and said reference contact and a second component voltage between a second line element of said two line elements and said reference contact, a difference between the first and second component voltages corresponds to the operating voltage and the first component voltage and the second component voltage each have a respective voltage value with respect to said reference contact, the respective voltage value being lower in terms of magnitude than the predetermined limit value;
• wherein the reference ground potential is between the first component voltage and the second component voltage.

A method for supplying an electrical vehicle component part of a motor vehicle with an operating voltage, the operating voltage having a voltage value that is greater than a predetermined limit value, which comprises the steps of:

• providing a source circuit for generating the operating voltage and two line elements for transmitting the operating voltage to the electrical vehicle component part by way of a circuit configuration;
• and
• generating, via the source circuit for generating the operating voltage, a first component voltage between a first line element of the two line elements and a reference contact, which is connected to a reference-ground potential of an environment of the circuit configuration, and a second component voltage between a second line element of the two line elements and the reference contact, wherein a difference between the first and second component voltages corresponding to the operating voltage and the first component voltage and the second component voltage each have a respective voltage value with respect to the reference contact, the respective voltage value being lower in terms of magnitude than the predetermined limit value;
• wherein the reference ground potential is between the first component voltage and the second component voltage.