Control device for a DC-to-DC converter of an electrical drive system, and a method for operating a DC-to-DC converter

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United States of America Patent

PATENT NO 9487093
APP PUB NO 20140217817A1
SERIAL NO

14345768

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Importance

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Abstract

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The invention relates to an electrical drive system of a hybrid vehicle, comprising: a traction battery (1), a high-voltage intermediate circuit (2), a pulse-controlled inverter (3) which is coupled to the high voltage intermediate circuit (2), an electrical machine (5) which is coupled to the pulse-controlled inverter (3); a DC-to-DC converter (6) which is coupled to the pulse-controlled inverter (3) and the high-voltage intermediate circuit (2) and is designed to convert a high voltage (UE) from the high-voltage intermediate circuit (2) into a low voltage (UA) for a vehicle electrical system; a low-voltage battery (8) which is coupled to the DC-to-DC converter (6); a plurality of selectively-connectable electrical consumers (9a, 9b) of the vehicle electrical system, which are coupled to the low-voltage battery (8) and the DC-to-DC converter (6); and a control device (7) which, in the event of a traction battery failure, is designed to operate the DC-to-DC converter (6) in a current-controlled manner using the electrical machine so as to supply said vehicle electrical system consumers (9a, 9b).

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Patent Owner(s)

Patent OwnerAddress
ROBERT BOSCH GMBHPOSTFACH 30 02 20 70442 STUTTGART 70442

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Knorpp, Thomas Freiberg A. N., DE 5 6
Michels, Markus Stuttgart, DE 14 163
Raichle, Daniel Vaihingen, DE 32 82
Ruffer, Michael Ludwigsburg, DE 4 5

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