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US 11,142,090 B2Granted
Device and method for operating a motor vehicle, and motor vehicle
AssigneeRobert Bosch GmbH
InventorsChristian Bernhardt, Thomas Meyer
Life of this patent
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AssigneeRobert Bosch GmbH
InventorsChristian Bernhardt, Thomas Meyer
Estimating the term…
The invention relates to a device (1) for operating a motor vehicle, comprising an electrical drive system with an electrical high-voltage traction network (2) and an operating network (3) that has a high-voltage unit (7) comprising a power electronics system (5), and a low-voltage unit (6) comprising a control electronics system (4), and a first transformer (8) designed to convert an input voltage (U1) from the low-voltage unit (6) into a first, particularly higher output voltage (U2) for the power electronics system (5). According to the invention, the dev ice comprises at least one second transformer (11) designed to convert the first output voltage (U2) of the first transformer (8) into a second output voltage (U3) for the control electronics system (4), the second output voltage (U3) being higher than the input voltage (U1).
A device (1) for operating a motor vehicle, the device comprising:
A motor vehicle comprising an electrical drive system with an electrical high-voltage traction network (2) and an operating network (3) which has a high-voltage part (7) having a power electronics system (5) and a low-voltage part (6) having a control electronics system (4), and a first transformer (8) configured to convert an input voltage (U1) from the low-voltage part (6) into a first output voltage (U2) for the power electronics system (5), wherein the first output voltage (U2) is greater than the input voltage (U1), and at least one second transformer (11) configured to convert the first output voltage (U2) of the first transformer (8) into a second output voltage (U3) for the control electronics system (4), wherein the second output voltage (U3) is higher than the input voltage (U1).
A method for operating a motor vehicle comprising an electrical drive system with an electrical high-voltage traction network (2) as well as an operating network (3) which has a high-voltage part (7) having a power electronics system (5) and a low-voltage part (6) having a control electronics system (4), wherein an input voltage (U1) from the low-voltage part is converted by a first transformer (8) into a higher output voltage (U2) for the power electronics system (5), wherein the output voltage (U2) of the first transformer (8) is converted into a second output voltage (U3) for the control electronics system (4), wherein the second output voltage (U3) is selected to be higher than the input voltage (U1).
Dependencies are inferred from the claim text.