Patent ID: 11932136
Assignee: VITESCO TECHNOLOGIES GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A multi-voltage battery device for a motor vehicle, comprising:
a first electrical output terminal and an electrical ground terminal for the provision of a first rated voltage;
a second electrical output terminal and the electrical ground terminal for the provision of a second rated voltage;
a first series circuit of a first battery cell group and a first controllable switch between the first electrical output terminal and the electrical ground terminal, wherein the first switch is electrically connected into the first series circuit via two terminals;
a first protective resistor that is electrically connected between the two terminals of the first switch, the first protective resistor being connected in parallel to the first switch;
wherein the first switch is configured to bridge the protective resistor when in a closed switch state;
a second battery cell group, that is electrically connected between the second electrical output terminal and the first electrical output terminal, and is connected switchably in series with the first battery cell group;
a battery management assembly for operating the multi-voltage battery device, the battery management assembly being configured to switch the first switch into an open switch state to protect the first battery cell group in the event of an excessively high current or of an electrical short-circuit between the first electrical output terminal and the electrical ground terminal.