Systems and methods for detecting ultracapacitor cell short circuits
First Claim
1. A computer-implemented method for detecting a short-circuited ultracapacitor cell on a machine, the method comprising:
- performing, by one or more processors, cell balancing among a plurality of ultracapacitor cells arranged within a plurality of ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series;
measuring, by the one or more processors, a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and prior to applying a load of the machine to the ultracapacitor modules; and
determining, by the one or more processors, that an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited when a module unbalanced voltage exceeds a threshold voltage, the module unbalanced voltage being equal to a difference between a maximum module voltage and a minimum module voltage determined from among the measured module voltages.
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Accused Products
Abstract
A system for detecting a short-circuited ultracapacitor cell in a machine is disclosed. The system may have a memory that stores instructions and one or more processors capable of executing the instructions. The one or more processors may be configured to perform cell balancing among ultracapacitor cells arranged within two or more ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series. The one or more processors may be further configured to measure a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and before applying a load of the machine to the ultracapacitor modules, and determine whether an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited based on a comparison of the measured module voltages.
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Citations
17 Claims
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1. A computer-implemented method for detecting a short-circuited ultracapacitor cell on a machine, the method comprising:
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performing, by one or more processors, cell balancing among a plurality of ultracapacitor cells arranged within a plurality of ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series; measuring, by the one or more processors, a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and prior to applying a load of the machine to the ultracapacitor modules; and determining, by the one or more processors, that an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited when a module unbalanced voltage exceeds a threshold voltage, the module unbalanced voltage being equal to a difference between a maximum module voltage and a minimum module voltage determined from among the measured module voltages. - View Dependent Claims (2)
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3. A computer-implemented method for detecting a short-circuited ultracapacitor cell on a machine, the method comprising:
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performing, by one or more processors, cell balancing among a plurality of ultracapacitor cells arranged within a plurality of ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series; measuring, by the one or more processors, a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and prior to applying a load of the machine to the ultracapacitor modules; determining, by the one or more processors, whether an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited based on a comparison of the measured module voltages; calculating, by the one or more processors, an average module voltage that is an average of two or more of the measured module voltages; and calculating, by the one or more processors, a probability value for each module based on a difference between the average module voltage and the measured module voltage for that module, the probability value representing a probability that the ultracapacitor cell that is short-circuited is included in that module. - View Dependent Claims (4, 5)
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6. A computer-implemented method for detecting a short-circuited ultracapacitor cell on a machine, the method comprising:
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performing, by one or more processors, cell balancing among a plurality of ultracapacitor cells arranged within a plurality of ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series; measuring, by the one or more processors, a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and prior to applying a load of the machine to the ultracapacitor modules; determining, by the one or more processors, whether an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited based on a comparison of the measured module voltages; determining, by the one or more processors, a reason why the cell balancing is required; and counting, by the one or more processors, a number of times that the cell balancing is required because of the reason.
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7. A system for detecting a short-circuited ultracapacitor cell on a machine, the system comprising:
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a non-transitory computer-readable memory storing instructions; and one or more processors capable of executing the instructions and configured to; perform cell balancing among a plurality of ultracapacitor cells arranged within a plurality of ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series; measure a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and before applying a load of the machine to the ultracapacitor modules; and determine that an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited when a module unbalanced voltage exceeds a threshold voltage, the module unbalanced voltage being equal to a difference between a maximum module voltage and a minimum module voltage determined from among the measured module voltages. - View Dependent Claims (8, 9)
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10. A system for detecting a short-circuited ultracapacitor cell on a machine, the system comprising:
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a non-transitory computer-readable memory storing instructions; and one or more processors capable of executing the instructions and configured to; perform cell balancing among a plurality of ultracapacitor cells arranged within a plurality of ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series; measure a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and before applying a load of the machine to the ultracapacitor modules; determine whether an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited based on a comparison of the measured module voltages; calculate an average module voltage that is an average of two or more of the measured module voltages; and calculate a probability value for each module based on a difference between the average module voltage and the measured module voltage for that module, the probability value representing a probability that the ultracapacitor cell that is short-circuited is included in that module. - View Dependent Claims (11, 12)
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13. A system for detecting a short-circuited ultracapacitor cell on a machine, the system comprising:
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a non-transitory computer-readable memory storing instructions; and one or more processors capable of executing the instructions and configured to; perform cell balancing among a plurality of ultracapacitor cells arranged within a plurality of ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series; measure a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and before applying a load of the machine to the ultracapacitor modules; determine whether an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited based on a comparison of the measured module voltages; determine a reason why the cell balancing is required; and maintain a counter that counts a number of times that the cell balancing is required because of the reason.
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14. A non-transitory computer-readable storage device storing instructions that, when executed, enable one or more processors to:
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perform cell balancing among a plurality of ultracapacitor cells arranged within a plurality of ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series; measure a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and before applying a load of a machine to the ultracapacitor modules; and determine that an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited when a module unbalanced voltage exceeds a threshold voltage, the module unbalanced voltage being equal to a difference between a maximum module voltage and a minimum module voltage determined from among the measured module voltages. - View Dependent Claims (15)
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16. A non-transitory computer-readable storage device storing instructions that, when executed, enable one or more processors to:
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perform cell balancing among a plurality of ultracapacitor cells arranged within a plurality of ultracapacitor modules, each ultracapacitor module including at least two ultracapacitor cells connected in series; measure a module voltage generated by each of the plurality of ultracapacitor modules after performing the cell balancing and before applying a load of a machine to the ultracapacitor modules; determine whether an ultracapacitor cell among the plurality of ultracapacitor cells is short-circuited based on a comparison of the measured module voltages; calculate an average module voltage that is an average of two or more of the measured module voltages; and calculate a probability value for each module based on a difference between the average module voltage and the measured module voltage for that module, the probability value representing a probability that the ultracapacitor cell that is short-circuited is included in that module. - View Dependent Claims (17)
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Specification