VEHICULAR HIGH POWER ELECTRICAL SYSTEM
First Claim
Patent Images
1. An electrical system for a vehicle, comprising:
- a power converter configured to convert a vehicle battery voltage at a first electrical bus into a second voltage at a second electrical bus, the second voltage being at least as high as the vehicle battery voltage; and
an energy storage apparatus coupled to the second electrical bus;
wherein at least one load is coupled to the second electrical bus, andwherein the power converter is configured to provide power from the first electrical bus to the at least one load and to limit a power drawn from the first electrical bus to no higher than a maximum power, and wherein, when the at least one load draws more power than the maximum power, the at least one load at least partially draws power from the energy storage apparatus.
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Abstract
A vehicle electrical system can include a high-power electrical bus that is controlled independently of an electrical bus connected to the vehicle battery. The high-power electrical bus may be supplied at least partially by a power converter (e.g., a DC/DC converter) that draws power from the vehicle battery, and which can at least partially decouple the high-power electrical bus from the vehicle battery. High-power electrical loads, such as an active suspension system, for example, may be powered by the high-power electrical bus.
40 Citations
56 Claims
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1. An electrical system for a vehicle, comprising:
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a power converter configured to convert a vehicle battery voltage at a first electrical bus into a second voltage at a second electrical bus, the second voltage being at least as high as the vehicle battery voltage; and an energy storage apparatus coupled to the second electrical bus; wherein at least one load is coupled to the second electrical bus, and wherein the power converter is configured to provide power from the first electrical bus to the at least one load and to limit a power drawn from the first electrical bus to no higher than a maximum power, and wherein, when the at least one load draws more power than the maximum power, the at least one load at least partially draws power from the energy storage apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrical system for a vehicle, comprising:
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a power converter configured to convert a vehicle battery voltage at a first electrical bus into a second voltage at a second electrical bus, the second voltage being at least as high as the vehicle battery voltage, wherein the power converter is configured to provide power from the first electrical bus to a load coupled to the second electrical bus, and to limit a power drawn from the first electrical bus to no higher than a maximum power based on an amount of energy drawn from the first electrical bus over a time interval. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An electrical system for a vehicle, comprising:
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a power converter configured to convert a vehicle battery voltage at a first electrical bus into a second voltage at a second electrical bus, the second voltage being at least as high as the vehicle battery voltage, the power converter being configured to receive a signal indicating a state of the vehicle, wherein the state of the vehicle represents a measure of energy available from the first electrical bus, wherein at least one load is coupled to the second electrical bus, and wherein the power converter is configured to provide power from the first electrical bus to the at least one load and to limit a power drawn from the first electrical bus based on the state of the vehicle. - View Dependent Claims (17, 18, 19, 20)
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21. An electrical system for a vehicle, comprising:
a power converter configured to convert a vehicle battery voltage at a first electrical bus into a second voltage at a second electrical bus, wherein the power converter is configured to allow the second voltage to vary in response to a power source and/or power sink coupled to the second electrical bus, and wherein the second voltage is allowed to fluctuate between a first threshold and a second threshold. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. An electrical system for an electric vehicle, comprising:
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a first electrical bus that operates at a first voltage and drives a drive motor of the electric vehicle; an energy storage apparatus coupled to the first electrical bus; a second electrical bus that operates at a second voltage lower than the first voltage; a power converter configured to transfer power between the first electrical bus and the second electrical bus; and at least one electrical load connected to and controlled by an electronic controller, the at least one electrical load being powered from the second electrical bus, wherein the at least one electrical load comprises an active suspension actuator. - View Dependent Claims (35, 36, 37)
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38. An electrical system for a vehicle, comprising:
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an electrical bus configured to deliver power to a plurality of connected loads; an energy storage apparatus coupled to the electrical bus, wherein the energy storage apparatus has a state of charge, and wherein the energy storage apparatus is configured to deliver power to the plurality of connected loads; a power converter configured to provide power to the energy storage apparatus and regulate the state of charge of the energy storage apparatus; and at least one device that obtains information regarding an expected future driving condition, wherein the power converter regulates the state of charge of the energy storage apparatus based on the expected future driving condition. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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46. An electrical system for a vehicle, comprising:
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a power converter configured to convert a vehicle battery voltage at a first electrical bus into a second voltage at a second electrical bus, the second voltage being at least as high as the vehicle battery voltage; and an energy storage apparatus connected across the power converter, wherein a first terminal of the energy storage apparatus is connected to the first electrical bus and a second terminal of the energy storage apparatus is connected to the second electrical bus; wherein at least one load is coupled to the second electrical bus, and wherein the power converter is configured to provide power from the first electrical bus to the at least one load and to limit a net power drawn from the first electrical bus to no higher than a maximum power, wherein net power drawn from the first electrical bus comprises a combination of power through the power converter and the energy storage apparatus. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification