On-board network topology for a powertrain of a battery-electric vehicle

Abstract

The invention relates to an electrical system topology (1) for a powertrain (20) of a battery-electric vehicle. The electrical system topology (1) comprises an electrically rechargeable high-voltage battery (2) for providing a high-voltage output voltage (V-HV). Furthermore, the electrical system topology comprises an electrical HV input connection (3) for connecting the electrical system topology (1) to an electrical charging station (30, 31) for charging the high-voltage battery (2). The electrical system topology also comprises a DC-DC converter (4) for converting a high-voltage input voltage (HV-E) into the higher high-voltage output voltage (HV-A) via which the HV input connection (3) can be electrically connected to the high-voltage battery (2).Furthermore, the vehicle electrical system topology includes an electrical switch (5) arranged between the DC-DC converter (4) and the high-voltage battery (2) for electrically interrupting the electrical connection between the DC-DC converter (4) and the high-voltage battery (2). According to the invention, the vehicle electrical system topology includes an electrical bypass (XX) with an electrical bypass line (6) which electrically connects the HV input terminal (3) on the DC-DC converter (4) to the high-voltage battery (2). According to the invention, at least one electrical bypass switch (7a, 7b) for interrupting this electrical connection is arranged in the electrical bypass or in the electrical bypass line (6).

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