Health management of rechargeable batteries
First Claim
1. A system to monitor health of a rechargeable battery electrically coupled to an aircraft, the system comprising:
- a vehicle portion, comprising;
a battery health management unit physically connected to the rechargeable battery by an internal data bus and including;
a state of charge module to estimate a state of battery charge of the rechargeable battery based on battery-related data received on the internal data bus;
a state of health module to estimate a state of battery health based on battery-related data received on the internal data bus, wherein the battery-related data comprises data collected in real time operation of the battery and fault history of the aircraft;
a state of life module to estimate a state of battery life of the rechargeable battery based on battery-related data received on the internal data bus; and
a prognostic management component to;
receive an output from at least one of the state of charge module, the state of health module, and the state of life module;
process the output to generate a health status indicator which provides a fix or fly status for the rechargeable battery; and
output the health status indicator to an external data bus separate from the internal data bus.
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Abstract
Systems and methods for health management of rechargeable batteries are disclosed. In one embodiment, a rechargeable battery system includes a rechargeable battery, and a battery health management unit operatively coupled to the rechargeable battery and including a state of health module configured to estimate a battery health by receiving battery-related data and predicting one or more failure modes. The state of health module may further include a prognostic failure mode component configured to combine at least one flight data variable with at least one model-based prognostic. In alternate embodiments, the battery health management unit may further include a state of life module and a state of charge module.
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Citations
21 Claims
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1. A system to monitor health of a rechargeable battery electrically coupled to an aircraft, the system comprising:
a vehicle portion, comprising; a battery health management unit physically connected to the rechargeable battery by an internal data bus and including; a state of charge module to estimate a state of battery charge of the rechargeable battery based on battery-related data received on the internal data bus; a state of health module to estimate a state of battery health based on battery-related data received on the internal data bus, wherein the battery-related data comprises data collected in real time operation of the battery and fault history of the aircraft; a state of life module to estimate a state of battery life of the rechargeable battery based on battery-related data received on the internal data bus; and a prognostic management component to; receive an output from at least one of the state of charge module, the state of health module, and the state of life module; process the output to generate a health status indicator which provides a fix or fly status for the rechargeable battery; and output the health status indicator to an external data bus separate from the internal data bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of determining a health characteristic of a rechargeable battery electrically coupled to a vehicle, the method comprising:
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receiving, in a battery health management unit physically connected to the rechargeable battery, battery-related data on an internal data bus, wherein the battery-related data comprises data collected in real time operation of the rechargeable battery; estimating a state of battery charge based on battery-related data received on the internal data bus; estimating a state of battery health based on battery-related data received on the internal data bus, wherein the battery-related data comprises first data indicating one or more operation anomalies associated with the vehicle; estimating a state of battery life based on battery-related data received on the internal data bus; processing at least one of the state of battery charge, the state of battery health, and the state of battery life to generate a health status indicator which provides a fix or fly status for the rechargeable battery; and outputting health status indicator onto an external data bus, separate from the internal data bus. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification