SYSTEMS AND METHODS FOR DETERMINING BATTERY STATE OF CHARGE
First Claim
1. A system for determining a state of charge of a battery comprising:
- a power source configured to provide a charging current to a battery; and
a controller configured to determine a state of charge based on impedance of a battery during a discharge time period based on an impedance and a state of charge relationship of a battery during a charge time period.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems (50, 200) and methods for determining a state of charge of a battery (52, 102, 150, 202) are provided. The system (50, 200) includes a power source (56, 206) configured to provide a charging current to a battery (52, 102, 150, 202). A controller (54, 104, 204) is included and configured to determine a state of charge of the battery (52, 102, 150, 202) based on impedance of a battery (52, 102, 150, 202) during a discharge time period based on an impedance and a state of charge relation-ship of a battery (52, 102, 150, 202) during a charge time period.
30 Citations
20 Claims
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1. A system for determining a state of charge of a battery comprising:
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a power source configured to provide a charging current to a battery; and a controller configured to determine a state of charge based on impedance of a battery during a discharge time period based on an impedance and a state of charge relationship of a battery during a charge time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system determining a state of charge of a battery, the system comprising:
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a power source configured to provide the battery with a charging current; and a controller configured to determine a plurality of impedances of the battery during a charge period, wherein each impedance of the plurality of impedances of the battery corresponds with a given state of charge of the battery. - View Dependent Claims (12, 13, 14, 15)
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16. A method for determining a state of charge of a battery, the method comprising:
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providing a charging current to the battery; determining an initial state of charge (SOC) for the battery; charging the battery for a predetermined time interval; determining a subsequent SOC for the battery; determining an open circuit voltage (OCV) corresponding to the subsequent SOC of the battery; and calculating an impedance for the battery corresponding to the subsequent SOC of the battery. - View Dependent Claims (17, 18, 19, 20)
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Specification