Vehicle energy storage system control methods and method for determining battery cycle life projection for heavy duty hybrid vehicle applications
First Claim
1. A method for equalizing a storage parameter for a vehicle energy storage system having two or more energy storage banks associated therewith, the method comprising:
- identifying a quiescent period of operation for the vehicle;
determining whether the value of a defined storage quantity for a first energy storage bank differs from the value of said defined storage quantity for a second energy storage bank by a threshold amount; and
during said quiescent period of operation, discharging one of said first and second energy storage banks and charging the other of said first and second energy storage banks;
wherein said one of said first and second energy storage banks corresponds to the bank having the value of said defined storage quantity exceeding the value of said defined storage quantity of said other of said first and second energy storage banks.
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Abstract
A method for equalizing a storage parameter for a vehicle energy storage system having one or more energy storage banks associated therewith includes identifying a quiescent period of operation for the vehicle, and determining whether the value of a defined storage quantity for a first energy storage bank differs from the value of said defined storage quantity for a second energy storage bank by a threshold amount. During the quiescent period of operation, one of said first and second energy storage banks is discharged and the other of the first and second energy storage banks is charged. The one of the first and second energy storage banks corresponds to the bank having the value of the defined storage quantity exceeding the value of the defined storage quantity of the other of said first and second energy storage banks.
50 Citations
27 Claims
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1. A method for equalizing a storage parameter for a vehicle energy storage system having two or more energy storage banks associated therewith, the method comprising:
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identifying a quiescent period of operation for the vehicle;
determining whether the value of a defined storage quantity for a first energy storage bank differs from the value of said defined storage quantity for a second energy storage bank by a threshold amount; and
during said quiescent period of operation, discharging one of said first and second energy storage banks and charging the other of said first and second energy storage banks;
wherein said one of said first and second energy storage banks corresponds to the bank having the value of said defined storage quantity exceeding the value of said defined storage quantity of said other of said first and second energy storage banks. - View Dependent Claims (2)
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3. A method for equalizing a storage parameter for a vehicle energy storage system having two or more energy storage banks associated therewith, the method comprising:
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identifying an active period of operation for the vehicle;
determining whether the value of a defined storage quantity for a first energy storage bank differs from the value of said defined storage quantity for a second energy storage bank by a threshold amount;
during a motoring operation of the vehicle, applying discharging energy from said one of said first and second energy storage banks to said motoring operation if the value of said defined storage quantity for said one of said first and second energy storage banks differs from the value of said defined storage quantity for said other of said first and second energy storage banks by said threshold amount. - View Dependent Claims (4)
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5-17. -17. (canceled)
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18. A method for generating an energy storage control parameter for a vehicle energy storage system, the method comprising:
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receiving energy storage electrical property information; and
estimating, from said energy storage electrical property information, a storage bank temperature. - View Dependent Claims (19, 20, 21)
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22-23. -23. (canceled)
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24. A method for controlling the operating range of one or more energy storage banks in a vehicle energy storage system, the method comprising:
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determining a point at which the energy storage bank has reached a threshold value with respect to an end of life (EOL) condition; and
responsive to said threshold value, reducing at least one of an energy storage bank operating parameter and an energy storage bank operating range. - View Dependent Claims (25, 26)
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27-39. -39. (canceled)
Specification