State of charge tracking system for battery systems
First Claim
1. A battery control module for a battery system, comprising:
- a voltage measuring module that measures battery voltage;
a current measuring module that measures battery current; and
a state of charge (SOC) module that communicates with said current and voltage measuring modules and that estimates SOC when an accumulated charge swing during charge is greater than or equal to a negative of an accumulated discharge swing during a prior discharge and a charge current is within a predetermined window of a negative of a retained discharge current during said prior discharge.
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Accused Products
Abstract
A battery control module for a battery system comprises a voltage measuring module that measures battery and a current measuring module that measures battery current. A state of charge (SOC) module communicates with the current and voltage measuring modules and estimates SOC at least one of when an accumulated charge swing during charge is greater than or equal to an accumulated discharge swing during a prior discharge and a negative of a charge current is within a predetermined window of a negative of a retained discharge current during the prior discharge and/or when an accumulated discharge swing during discharge is greater than or equal to an accumulated charge swing during a prior charge and a negative of a discharge current is within a predetermined window of a negative of a retained charge current during the prior charge.
27 Citations
32 Claims
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1. A battery control module for a battery system, comprising:
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a voltage measuring module that measures battery voltage;
a current measuring module that measures battery current; and
a state of charge (SOC) module that communicates with said current and voltage measuring modules and that estimates SOC when an accumulated charge swing during charge is greater than or equal to a negative of an accumulated discharge swing during a prior discharge and a charge current is within a predetermined window of a negative of a retained discharge current during said prior discharge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A battery control module for a battery system, comprising:
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a voltage measuring module that measures battery voltage;
a current measuring module that measures battery current; and
a state of charge (SOC) module that communicates with said current and voltage measuring modules and that estimates SOC when an accumulated discharge swing during discharge is greater than or equal to a negative of an accumulated charge swing during a prior charge and a discharge current is within a predetermined window of a negative of a retained charge current during said prior charge. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for operating a battery control module for a battery system, comprising:
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measuring battery voltage;
measuring battery current; and
estimating state of charge (SOC) when an accumulated charge swing during charge is greater than or equal to a negative of an accumulated discharge swing during a prior discharge and a charge current is within a predetermined window of a negative of a retained discharge current during said prior discharge. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method for operating a battery control module for a battery system, comprising:
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measuring battery voltage;
measuring battery current; and
estimating state of charge (SOC) when an accumulated discharge swing during discharge is greater than or equal to a negative of an accumulated charge swing during a prior charge and a discharge current is within a predetermined window of a negative of a retained charge current during said prior charge. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification