BATTERY MANAGEMENT SYSTEM
First Claim
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1. A method of estimating a state of charge of a battery, comprising:
- using a first neural network to form an estimate of a total charge available in the battery at the start of an ongoing discharge operation commencing at an end of a previous recharging operation;
measuring an amount of charge drawn from the battery since the previous recharging operation;
forming an estimate of the state of charge from the estimated remaining amount of charge and the amount of charge drawn.
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Abstract
A battery management system includes a neural network, for estimating an amount of charge stored in a battery following a recharging operation. Then, an amount of charge drawn during a discharging operation is subtracted from this estimated amount of charge to derive an estimate for the state of charge of the battery at a present time. A parameter representing the state of health of the battery may be provided as an input to the neural network, and the parameter representing the state of health of the battery may be generated by a second neural network.
9 Citations
40 Claims
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1. A method of estimating a state of charge of a battery, comprising:
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using a first neural network to form an estimate of a total charge available in the battery at the start of an ongoing discharge operation commencing at an end of a previous recharging operation; measuring an amount of charge drawn from the battery since the previous recharging operation; forming an estimate of the state of charge from the estimated remaining amount of charge and the amount of charge drawn. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A battery management system, for estimating a state of charge of a battery, comprising:
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a first neural network operable to form an estimate of a total charge available in the battery in an ongoing discharge operation commencing at an end of a previous recharging operation; a mechanism operable to measure an amount of charge drawn from the battery since the previous recharging operation; and a mechanism operable to form an estimate of the state of charge from the estimated total charge available and the amount of charge drawn. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An electrochemical cell system including a battery and a battery management system, wherein the battery management system comprises:
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a first neural network operable to form an estimate of a total charge available in the battery at a start of an ongoing discharge operation commencing at an end of a previous recharging operation; a mechanism operable to measure an amount of charge drawn from the battery since the previous recharging operation; and a mechanism operable to form an estimate of the state of charge from the estimated total charge available and the amount of charge drawn. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification