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Management of high-voltage lithium-polymer batteries in portable electronic devices

  • US 9,912,186 B2
  • Filed: 08/18/2016
  • Issued: 03/06/2018
  • Est. Priority Date: 08/25/2011
  • Status: Active Grant
First Claim
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1. An electronic system, the electronic system comprising:

  • at least one battery cell, the battery cell having a charge voltage;

    at least one controller coupled to the battery cell, the controller configured to;

    monitor a cycle number of the battery cell, the cycle number corresponding to a number of charge-discharge cycles of the battery cell;

    monitor a temperature of the battery cell;

    monitor a state-of-charge of the battery cell;

    reduce the charge voltage applied to the battery cell when the temperature of the battery cell exceeds a temperature threshold and the cycle number exceeds a first cycle number threshold;

    reduce the charge voltage applied to the battery cell when the temperature of the battery cell does not exceed the temperature threshold and the cycle number exceeds a second cycle number threshold different from the first cycle number threshold; and

    cause charging of the battery cell to cease when the state-of-charge of the battery cell is a fully charged state for a time period exceeding a time threshold.

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