Patent ID: 8629573
Filing Date: 2014-01-14
Classification: B60R,H02J,Y02T

Abstract:
1. An on-board electrical system for a motor vehicle, comprising: a vehicle battery; an electric load; an additional electrical load configured to be supplied with a voltage present at at least one of the vehicle battery and the electrical load; an energy storage device having a positive terminal and a negative terminal; a switching arrangement which connects in a first switching state the positive terminal of the energy storage device to the vehicle battery and the negative terminal of the energy storage device to the electrical load and which is configured to be switched into at least one additional switching state that is different from the first switching state; a DC-DC converter which is connected, on one hand, to the positive and the negative terminal of the energy storage device and, on the other hand, to the additional load, wherein the DC-DC converter taps a voltage present at the energy storage device and converts the tapped voltage into a supply voltage for redundantly supplying the additional load; and a control device for switching the switching arrangement between the first and the additional switching state.