SYSTEM AND METHOD FOR OPTIMIZING HYBRID VEHICLE BATTERY USAGE CONSTRAINTS
First Claim
1. A method for operating a hybrid electric vehicle having an electric machine and at least one energy storage module using a hybrid control module, comprising:
- establishing a predetermined service life target for a selected metric of the energy storage module;
establishing a maximum operating value associated with a first usage parameter for the energy storage module;
operating the electric machine such that the actual operating value of the energy storage module for the first usage parameter does not exceed the defined maximum operating value;
calculating a first indicator of the progress of the past operation of the energy storage module toward the predetermined service life target, wherein the first indicator is calculated using a plurality of actual observed usage parameters;
modifying the maximum operating value for the energy storage module based upon the first indicator; and
operating the electric machine such that the actual operating value of the energy storage module for the first usage parameter does not exceed the modified maximum operating value.
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Accused Products
Abstract
A hybrid system including a hybrid control module for operating the hybrid system to as to have its energy storage device meet a predetermined service life metric is disclosed. The hybrid control module stores experimental information indicative of the impact of certain usage parameters on the service life of the energy storage device, monitors the actual usage parameters observed during operation of the hybrid system, and dynamically determines a maximum operating temperature for the energy storage device in order to increase or decrease its utilization by the hybrid system.
13 Citations
25 Claims
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1. A method for operating a hybrid electric vehicle having an electric machine and at least one energy storage module using a hybrid control module, comprising:
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establishing a predetermined service life target for a selected metric of the energy storage module; establishing a maximum operating value associated with a first usage parameter for the energy storage module; operating the electric machine such that the actual operating value of the energy storage module for the first usage parameter does not exceed the defined maximum operating value; calculating a first indicator of the progress of the past operation of the energy storage module toward the predetermined service life target, wherein the first indicator is calculated using a plurality of actual observed usage parameters; modifying the maximum operating value for the energy storage module based upon the first indicator; and operating the electric machine such that the actual operating value of the energy storage module for the first usage parameter does not exceed the modified maximum operating value. - View Dependent Claims (3, 4, 5, 6, 9, 10, 11, 12, 17, 19, 20, 21, 22, 23, 24, 25)
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2. A method for operating a hybrid electric vehicle having an electric machine and at least one energy storage module using a hybrid control module, comprising:
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establishing a predetermined service life target for a selected metric of the energy storage module; establishing a maximum operating temperature for the energy storage module; operating the electric machine such that the actual operating temperature of the energy storage module does not exceed the defined maximum operating temperature; calculating a first indicator of the progress of the past operation of the energy storage module toward the predetermined service life target, wherein the first indicator is calculated using a plurality of actual observed usage parameters; modifying the maximum operating temperature for the energy storage module based upon the first indicator; and operating the electric machine such that the actual operating temperature of the energy storage module does not exceed the modified maximum operating temperature. - View Dependent Claims (13, 14, 16)
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7. A method for operating a hybrid electric vehicle having an electric machine and at least one energy storage module using a hybrid control module, comprising:
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establishing a predetermined service life target in ampere-hours for the energy storage module; establishing a maximum operating temperature for the energy storage module; operating the electric machine such that the actual operating temperature of the energy storage module does not exceed the defined maximum operating temperature; integrating the adjusted ampere-hours expended by the energy storage module during a defined period, wherein the adjusted ampere-hours are calculated as a function of the actual ampere-hours expended during the period and a plurality of actual usage parameters observed during the period; modifying the maximum operating temperature for the energy storage module based upon a comparison of the adjusted ampere-hours expended and the predetermined service life target; and operating the electric machine such that the actual operating temperature of the energy storage module does not exceed the modified maximum operating temperature.
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8. (canceled)
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15. (canceled)
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18. (canceled)
Specification