Voltage stabilization apparatus
First Claim
1. A voltage stabilization apparatus (1) for a motor vehicle electrical system for stabilizing at least one voltage-sensitive consumer (9), comprising:
- an energy source (11) for powering the motor vehicle electrical system;
a DC/DC converter circuit (3) electrically coupled with the energy source (11);
an energy storage device (5) electrically coupled in series with the energy source (11); and
a changeover switch (7) that in a first state electrically couples the at least one voltage-sensitive consumer (9) to the energy source (11) and electrically decouples the at least one voltage sensitive consumer (9) from the DC/DC converter circuit (3) and the energy storage device (5), and in a second state where the voltage provided by the energy source (11) drops electrically couples the at least one voltage sensitive consumer (9) to both the DC/DC converter circuit (3) and the energy storage device (5) such that both the energy storage device (5) and the energy source (11) provide power to the at least one voltage-sensitive consumer (9) in the second state.
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Accused Products
Abstract
A voltage stabilization apparatus (1) for a motor vehicle electrical system to stabilize at least one voltage-sensitive consumer (9) is proposed. The voltage stabilization apparatus is distinguished by a DC/DC converter circuit (3), an energy storage device (5) and a changeover switch (7), which are designed and arranged so that the energy storage device (5) is changeable by the DC/DC converter circuit (3) and the changeover switch (7) enables an electrical connection between the voltage-sensitive consumer (9) and the energy storage device (5) in such a way that the energy storage device (5) in case of need supplies a stabilization voltage (USTAB) at the consumer (9).
3 Citations
20 Claims
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1. A voltage stabilization apparatus (1) for a motor vehicle electrical system for stabilizing at least one voltage-sensitive consumer (9), comprising:
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an energy source (11) for powering the motor vehicle electrical system; a DC/DC converter circuit (3) electrically coupled with the energy source (11); an energy storage device (5) electrically coupled in series with the energy source (11); and a changeover switch (7) that in a first state electrically couples the at least one voltage-sensitive consumer (9) to the energy source (11) and electrically decouples the at least one voltage sensitive consumer (9) from the DC/DC converter circuit (3) and the energy storage device (5), and in a second state where the voltage provided by the energy source (11) drops electrically couples the at least one voltage sensitive consumer (9) to both the DC/DC converter circuit (3) and the energy storage device (5) such that both the energy storage device (5) and the energy source (11) provide power to the at least one voltage-sensitive consumer (9) in the second state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of providing voltage stabilization to at least one voltage-sensitive consumer (9) of a motor vehicle electrical system including an energy source (11) for powering the motor vehicle electrical system, a DC/DC converter circuit (3) electrically coupled with the energy source (11), an energy storage device (5) electrically coupled in series with the energy source (11), and a changeover switch (7), the method comprising:
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with the switch (7), electrically coupling the at least one voltage-sensitive consumer (9) to the energy source (11) and electrically decoupling the at least one voltage sensitive consumer (9) from the DC/DC converter circuit (3) and the energy storage device (5) thereby supplying an operating voltage (UB) to the at least one voltage-sensitive consumer (9) with the energy source (11); upon detection of a voltage drop in the operating voltage (UB) supplied to the at least one voltage-sensitive consumer (9), with the switch (7), electrically coupling the at least one voltage sensitive consumer (9) to both the DC/DC converter circuit (3) and the energy storage device (5) such that both the energy storage device (5) and the energy source (11) provide power to the at least one voltage-sensitive consumer (9) thereby supplying a stabilization voltage (USTAB) to the at least one voltage-sensitive consumer (9); and charging the energy storage device (5) with a DC/DC converter circuit (3) when the voltage drop is no longer detected. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification