Device for supplying power to a two-voltage vehicle electric system
2 Assignments
0 Petitions
Accused Products
Abstract
Device for supplying power to a two-voltage vehicle electrical system equipped with safety-relevant components with an integrated starter-generator mechanically coupled with an internal combustion engine BKM, a double-layer capacitor DLC, a first and second energy accumulator B1, B2, with power being able to be supplied to safety-relevant components V1s via three safety switches X1 to X3, alternately by the starter-generator ISG, the double-layer capacitor DLC, the first or the second energy accumulator B1, B2.
37 Citations
12 Claims
-
1-6. -6. (canceled)
-
7. A device for supplying energy to a two-voltage vehicle electrical system, the device comprising:
-
an integrated starter-generator mechanically coupled to an internal combustion engine;
a first switch;
a second switch;
a double-layer capacitor connected to said second switch;
a first accumulator connected to said first switch and supplying a first vehicle electric system and its loads with power;
a bidirectional AC/DC-converter disposed downstream of and connected to said integrated starter-generator, said bidirectional AC/DC-converter having a DC terminal connected through said first switch to said first accumulator and through said second switch to said double-layer capacitor;
a bidirectional DC/DC converter directly connected to said DC terminal of said bidirectional AC/DC converter;
a second accumulator connected to said bidirectional DC/DC converter, said second accumulator supplying a second vehicle electrical system and its loads with power;
a first safety switch through which the power is supplied to safety-relevant components by said integrated starter-generator through said bidirectional AC/DC converter or alternatively by said second accumulator though said bidirectional DC/DC converter;
a second safety switch through which the power is supplied to the safety-relevant components by said double-layer capacitor;
a third safety switch through which the power is supplied to the safety-relevant components by said first accumulator; and
a control/regulation circuit for controlling/regulating operational sequences of the device including a determination of a direction of operation of said bidirectional AC/DC-converter and said bidirectional DC/DC converter, a charging of said first and second accumulators and of said double layer capacitor and switch positions of said first and second switches and said first, second and third safety switches. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification