Patent ID: 6384489
Filing Date: 2002-05-07
Classification: B60L,B60R,F02N,H02J,Y02T

Abstract:
An energy supply circuit for a motor vehicle on-board electrical system comprising:first and second voltage supply branches having different voltage levels; a first direct-voltage converter coupled to feed a voltage to the first voltage supply branch from the second voltage supply branch; a generator coupled to supply a voltage to the second voltage supply branch; a first energy accumulator which buffers at least said first voltage supply branch; and a multi-level power distribution element having a first in/output connected with the second voltage supply branch, a second in/output connected with the first voltage supply branch, and a third in/output connected with the first energy accumulator, which multi-level power distribution element provides a variable voltage level on each of said in/outputs at one of three voltage levels, and feeds a variable distribution of the power flows via said multi-level power distribution element between said in/outputs.