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INFORMATION HANDLING SYSTEM BATTERY CHARGE MANAGEMENT IN A DYNAMIC DISCHARGE ENVIRONMENT

  • US 20200136401A1
  • Filed: 10/25/2018
  • Published: 04/30/2020
  • Est. Priority Date: 10/25/2018
  • Status: Active Grant
First Claim
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1. An information handling system comprising:

  • a housing;

    a processor operable to execute instructions that process information;

    one or more power rails interfaced with the processor to supply power to the processor at a predetermined voltage;

    a power supply interfaced with the one or more power rails to provide the predetermined voltage;

    an external power port integrated in the housing and operable to accept external power from an external power source;

    a battery integrated in the housing and operable to store power; and

    a charger interfaced with the external power port and the battery, the charger providing power to the power supply, the charger receiving power from the external power port to charge the battery in one of a constant current charge mode or a constant voltage charge mode;

    wherein the power supply selectively provides power to the one or more power rails from just the battery, just the external power port or both the battery and the external power port; and

    wherein the charger when in the constant voltage charge mode reduces a maximum current to charge the battery based upon a battery charge state and charges the battery at the maximum current, the charger in response to a subsequent decreased battery charge state limiting actual charge current to the battery based upon the maximum current in a predetermined manner.

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