Electrochemical cell state of health detection
AssigneeMedtronic, Inc.
InventorsRajesh V. Iyer, Gordon O. Munns, John M. Pantazis, Anthony David Calderoni, Laura E. McCalla, Eric Wigforss
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Abstract
An electrochemical cell charging apparatus includes a charger to charge one or more electrochemical cells and a computing apparatus. The computing apparatus includes one or more processors and is operatively coupled to the charger. The computing apparatus is configured to charge an electrochemical cell using the charger, determine one or more indicators of the state of health of the electrochemical cell, and determine the state of health of the electrochemical cell based on the determined one or more indicators.
Claims19
An electrochemical cell charging apparatus comprising:
- a charger to charge one or more electrochemical cells;
- and
- a computing apparatus comprising one or more processors operably coupled to the charger and configured to:
- cause the charger to charge an electrochemical cell to a maximum capacity of the electrochemical cell;
- determine a leakage current of the charged electrochemical cell;
- compare the determined leakage current to a threshold leakage current;
- and
- determine a state of health of the electrochemical cell based on the comparison.
The apparatus of claim 7, wherein the device is a medical device.
A method comprising:
- charging an electrochemical cell to a maximum capacity of the electrochemical cell using a charger;
- determining a leakage current of the charged electrochemical cell;
- comparing the determined leakage current to a threshold leakage current;
- and
- determining a state of health of the electrochemical cell based on the comparison.
An electrochemical cell charging apparatus comprising:
- a charger to charge one or more electrochemical cells;
- and
- a computing apparatus comprising one or more processors operably coupled to the charger and configured to:
- cause the charger to charge an electrochemical cell;
- enter a recharge state during the charging of the electrochemical cell;
- determine a frequency of recharge of the electrochemical cell in the recharge state;
- and
- determine a state of health of the electrochemical cell based on the determined frequency.
Dependencies are inferred from the claim text.