×

Method of determining the state of charge of a battery of an electronic appliance

  • US 10,073,144 B2
  • Filed: 09/23/2014
  • Issued: 09/11/2018
  • Est. Priority Date: 09/25/2013
  • Status: Active Grant
First Claim
Patent Images

1. A method, comprising:

  • iteratively estimating a state of charge of a battery; and

    generating a signal indicative of a state of charge of the battery based on the estimated state of charge of the battery, wherein the iteratively estimating compensates for drifts in operating parameters of the battery over time and at least one iteration of the estimating includes;

    receiving a measured indication of an intensity of current supplied by the battery;

    receiving a measured indication of a voltage supplied by the battery;

    estimating, using processing circuitry, a first state of charge of the battery during the iteration based on an estimated first state of charge of a previous iteration and on the received indication of the intensity of current supplied by the battery;

    estimating, using the processing circuitry, an intensity of current supplied by the battery based on the received indication of the voltage supplied by the battery and on a corrected state of charge of the battery of the previous iteration; and

    calculating, using the processing circuitry, a corrected state of charge of the iteration by adding to the estimated first state of charge of the iteration a corrective term, the corrective term being based on a product of a first correction gain and a factor representative of a difference between the estimated intensity of current and the received indication of the intensity of current supplied by the battery, wherein the estimated intensity of current is based on the following equation;

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×