On-board electrical system arrangement for a mild hybrid vehicle and mild hybrid vehicle with such an on-board electrical system arrangement, as well as methods for operating the on-board electrical system arrangement

Abstract

The invention relates to an on-board electrical system (2) for a mild hybrid vehicle (1), comprising, according to the invention: a powertrain on-board electrical system (4), two consumer on-board electrical systems (7, 9), a 48V battery (3) with two battery banks (3.1, 3.2) and a switching device (10) with two switch arrangements (10.1, 10.2) electrically connected in series, wherein the battery banks (3.1, 3.2) can be connected in parallel or are connected via the switching device (10), wherein the powertrain on-board electrical system (4) can be connected to the first battery bank (3.1) via the first switch arrangement (10.1) and to the second battery bank (3.2) via the second switch arrangement (10.2), wherein the first consumer on-board electrical system (7) is connected to the first battery bank (3.1) via a first DC-DC converter (11) or a first disconnect switch (S5) and via the first DC voltage converter (11) or the first disconnect switch (S5) and the switching device (10) with the second battery bank (3.2) connectable or connected,- wherein the second consumer electrical system (9) is connectable or connected to the second battery bank (3.2) via a second DC voltage converter (12) or a second disconnect switch (S6) and to the first battery bank (3.1) via the second DC voltage converter (12) or the second disconnect switch (S6) and the switching device (10).

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