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Dynamic adjustment of capacity threshold for a battery unit

  • US 10,283,987 B1
  • Filed: 02/06/2018
  • Issued: 05/07/2019
  • Est. Priority Date: 02/06/2018
  • Status: Active Grant
First Claim
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1. A battery backup unit, comprising:

  • a current sensor;

    one or more battery cells;

    a battery management unit that comprises a processor and a memory including instructions that, when executed with the processor, cause the battery management unit to, at least;

    receive, from the current sensor, information related to a current to or from the one or more battery cells;

    determine, based on the information related to the current, a full-charge capacity value for the one or more battery cells;

    receive a power requirement for a load supported by the battery backup unit, the power requirement for the load comprising an amount of energy consumed by the load during some preceding period of time;

    determine, based on the power requirements, a capacity threshold to be associated with the load that comprises an amount of energy required by the load over a predetermined period of time, wherein the capacity threshold is a product of the power requirement for the load and the predetermined period of time;

    compare the full-charge capacity value for the one or more battery cells to the capacity threshold associated with the load; and

    upon determining that the full-charge capacity value for the one or more battery cells is less than the determined capacity threshold associated with the load, provide an indication that the battery backup unit is insufficient to power the load.

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