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Combining power from a battery and an AC-DC converter of a power storage adapter

  • US 10,181,731 B1
  • Filed: 06/23/2017
  • Issued: 01/15/2019
  • Est. Priority Date: 06/23/2017
  • Status: Active Grant
First Claim
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1. A power storage adapter (PSA), comprising:

  • a port for coupling the power storage adapter to a variable power bus;

    a battery;

    an AC-DC converter having a maximum power supply capacity;

    a battery management unit comprising an adjustable DC-DC voltage converter to adjust an output voltage of the battery to a desired output voltage; and

    a PSA controller, wherein the PSA controller comprises circuitry to, when the AC-DC converter is coupled to AC line power and a power consuming device is coupled to the power storage adapter over the variable power bus through the port;

    determine a first power level at which electrical power will be consumed by the power consuming device when operating in a particular operating mode of a plurality of operating modes, each operating mode having respective performance or power consumption characteristics;

    determine that the first power level exceeds the maximum power supply capacity of the AC-DC converter;

    provide an indication to the battery management unit that electrical power supplied by the AC-DC converter and electrical power supplied by the battery are to be supplied simultaneously to the power consuming device, wherein a combined output power equal to a sum of electrical power supplied by the AC-DC converter and electrical power supplied by the battery is greater than or equal to the first power level;

    wherein the battery management unit comprises circuitry to;

    generate the combined output power in response to receiving the indication; and

    supply the combined output power to the power consuming device over the variable power bus.

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