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Systems and methods for management and monitoring of energy storage and distribution

  • US 10,389,141 B2
  • Filed: 12/18/2015
  • Issued: 08/20/2019
  • Est. Priority Date: 12/19/2014
  • Status: Active Grant
First Claim
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1. A method for discharging a battery pack, comprising:

  • providing a battery pack comprising at least two energy storage units in electrical communication with one another, each energy storage unit comprising;

    a battery cell operative to store energy received from an energy source and output stored energy as a direct current; and

    a cell monitoring and management component in electrical communication with a negative terminal of its battery cell, a positive terminal of its battery cell, and at least one of a negative terminal and a positive terminal of at least one adjacent battery cell; and

    a battery pack monitoring and management component in electrical communication with each battery cell;

    transmitting, by the battery pack monitoring and management component, a desired cell discharging current profile and at least one desired cell parameter for a selected battery cell to its cell monitoring and management component;

    outputting, by the selected battery cell, a first discharging current profile in response to receipt of the desired cell discharging profile and the desired cell parameter by its cell monitoring and management component;

    measuring, by the cell monitoring and management component of the selected battery cell, at least one cell parameter of the selected battery cell in response to output of the first discharging current profile, wherein at least one measured cell parameter corresponds to the desired cell parameter; and

    adjusting, by the cell monitoring and management component of the selected battery cell, the current profile output of the selected battery cell from the first discharging current output to a second discharging current output, different from the first discharging current output, if at least one measured cell parameter corresponding the desired cell parameter differs from the desired cell parameter by a selected threshold for the selected battery cell, wherein the second discharging current profile is different from the first discharging current profile;

    wherein the selected threshold comprises at least one of;

    2 or more standard deviations difference from the mean of statistical data points, 5% or more difference from an expected value, 10% or more difference from an expected value, 20% or more difference from an expected value, and 50% or more difference from an expected value.

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