Optimized fuzzy logic controller for energy management in micro and mild hybrid electric vehicles
First Claim
1. A computer-implemented method for controlling an operation of an energy storage system of a micro-hybrid vehicle, the method comprising:
- determining, using a processor, a driving mode of the micro-hybrid vehicle, and determining a speed of the micro-hybrid vehicle when in the driving mode, wherein the driving mode comprises one of an engine-off mode, an acceleration mode, or a slow-down mode;
determining, using the processor, a target state of charge (SOC) of each of a first energy storage device and a second energy storage device based on the speed;
determining, using the processor, a current SOC of each of the first energy storage device and the second energy storage device;
determining, using the processor, an amount of power available from a regenerative event for;
regeneration of the first energy storage device;
regeneration of the second energy storage device;
electrical accessories associated with the micro-hybrid vehicle; and
a motor associated with the micro-hybrid vehicle, wherein the amount of power available from the regenerative event is determined based on a difference between the target SOC and the current SOC of each of the first energy storage device and the second energy storage device; and
directing, using the processor, a power flow from the regenerative event to the first energy storage device, the second energy storage device, the electrical accessories associated with the micro-hybrid vehicle, and the motor associated with the micro-hybrid vehicle using a fuzzy logic and the amount of power available from the regenerative event, wherein the fuzzy logic is configured to cause the processor to;
activate at least one of the electrical accessories when the current SOC of the second energy storage device is suitable for the at least one of the electrical accessories and when the driving mode of the micro-hybrid vehicle corresponds to the engine-off mode;
activate power boosting for the motor when the driving mode of the micro-hybrid vehicle corresponds to the acceleration mode; and
direct braking energy to the second energy storage device when the driving mode of the micro-hybrid vehicle corresponds to the slow-down mode.
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Accused Products
Abstract
An energy storage system of a vehicle includes an energy storage device, a regulation device coupled to the energy storage device, one or more sensing devices for sensing current levels, voltage levels, temperature levels, and/or pressure levels of the energy storage device and/or on components thereof, and a control unit configured to determine dynamically a power flow in/out of the energy storage device using a fuzzy logic approach. The regulation device is configured to regulate at least one of a voltage level, a current level, and any additional state parameter of the energy storage device.
28 Citations
20 Claims
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1. A computer-implemented method for controlling an operation of an energy storage system of a micro-hybrid vehicle, the method comprising:
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determining, using a processor, a driving mode of the micro-hybrid vehicle, and determining a speed of the micro-hybrid vehicle when in the driving mode, wherein the driving mode comprises one of an engine-off mode, an acceleration mode, or a slow-down mode; determining, using the processor, a target state of charge (SOC) of each of a first energy storage device and a second energy storage device based on the speed; determining, using the processor, a current SOC of each of the first energy storage device and the second energy storage device; determining, using the processor, an amount of power available from a regenerative event for; regeneration of the first energy storage device; regeneration of the second energy storage device; electrical accessories associated with the micro-hybrid vehicle; and a motor associated with the micro-hybrid vehicle, wherein the amount of power available from the regenerative event is determined based on a difference between the target SOC and the current SOC of each of the first energy storage device and the second energy storage device; and directing, using the processor, a power flow from the regenerative event to the first energy storage device, the second energy storage device, the electrical accessories associated with the micro-hybrid vehicle, and the motor associated with the micro-hybrid vehicle using a fuzzy logic and the amount of power available from the regenerative event, wherein the fuzzy logic is configured to cause the processor to; activate at least one of the electrical accessories when the current SOC of the second energy storage device is suitable for the at least one of the electrical accessories and when the driving mode of the micro-hybrid vehicle corresponds to the engine-off mode; activate power boosting for the motor when the driving mode of the micro-hybrid vehicle corresponds to the acceleration mode; and direct braking energy to the second energy storage device when the driving mode of the micro-hybrid vehicle corresponds to the slow-down mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-implemented method for controlling an operation of an energy storage system of a micro-hybrid vehicle, the method comprising:
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determining, using a processor, a driving mode of the micro-hybrid vehicle, and determining a speed of the micro-hybrid vehicle when in the driving mode, wherein the driving mode comprises one of a stopped mode, an engine cranking mode, or a slow-down mode; determining, using the processor, a target state of charge (SOC) of each of a first energy storage device and a second energy storage device based on the speed; determining, using the processor, a current SOC of each of the first energy storage device and the second energy storage device; determining, using the processor, an amount of power available from a regenerative event for; regeneration of the first energy storage device; regeneration of the second energy storage device; electrical accessories associated with the micro-hybrid vehicle; and a motor associated with the micro-hybrid vehicle, wherein the amount of power available from the regenerative event is determined based on a difference between the target SOC and the current SOC of each of the first energy storage device and the second energy storage device; and directing, using the processor, a power flow from the regenerative event to the first energy storage device, the second energy storage device, the electrical accessories associated with the micro-hybrid vehicle, and the motor associated with the micro-hybrid vehicle using a fuzzy logic and the amount of power available from the regenerative event, wherein the fuzzy logic is configured to cause the processor to; activate at least one of the electrical accessories associated with the micro-hybrid vehicle when the driving mode corresponds to the stopped mode; provide a starting electric current using energy from the first energy storage device when the driving mode of the vehicle corresponds to the engine cranking mode; and direct braking energy to the second energy storage device when the driving mode of the micro-hybrid vehicle corresponds to the slow-down mode. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A computer-implemented method for controlling an operation of an energy storage system of a micro-hybrid vehicle, the method comprising:
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determining, using a processor, a driving mode of the micro-hybrid vehicle, and determining a speed of the micro-hybrid vehicle when in the driving mode, wherein the driving mode comprises one of an engine-off mode, an engine cranking mode, or a slow-down mode; determining, using the processor, a target state of charge (SOC) of each of a first energy storage device and a second energy storage device based on the speed; determining, using the processor, a current SOC of each of the first energy storage device and the second energy storage device; determining, using the processor, an amount of power available from a regenerative event for; regeneration of the first energy storage device; regeneration of the second energy storage device; electrical accessories associated with the micro-hybrid vehicle; and a motor associated with the micro-hybrid vehicle, wherein the amount of power available from the regenerative event is determined based on a difference between the target SOC and the current SOC of each of the first energy storage device and the second energy storage device; and directing, using the processor, a power flow from the regenerative event to the first energy storage device, the second energy storage device, the electrical accessories associated with the micro-hybrid vehicle, and the motor associated with the micro-hybrid vehicle using a fuzzy logic and the amount of power available from the regenerative event, wherein the fuzzy logic is configured to cause the processor to; activate at least one of the electrical accessories when a first current SOC of the second energy storage device is suitable for the at least one of the electrical accessories and when the driving mode of the micro-hybrid vehicle corresponds to the engine-off mode; provide a starting electric current using energy from the first energy storage device when the driving mode of the vehicle corresponds to the engine cranking mode; and direct braking energy to the second energy storage device when the driving mode of the micro-hybrid vehicle corresponds to the slow-down mode. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification