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Method and circuitry to adaptively charge a battery/cell

  • US 9,142,994 B2
  • Filed: 09/25/2012
  • Issued: 09/22/2015
  • Est. Priority Date: 09/25/2012
  • Status: Active Grant
First Claim
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1. A method to adaptively charge a battery, wherein the battery includes at least two terminals, the method comprising:

  • applying a charge signal to the terminals of the battery, wherein the charge signal includes a plurality of charge packets, wherein a first charge packet includes a first charge pulse;

    measuring a plurality of terminal voltages which are in response to the first charge pulse, wherein each terminal voltage is a voltage between the terminals of the battery;

    determining a first charge pulse voltage (first CPV) of the battery, wherein the first CPV is a peak voltage which is in response to the first charge pulse;

    determining whether the first CPV of the battery is within a predetermined range or greater than a predetermined upper limit value, wherein the predetermined range and/or the predetermined upper limit value changes during charging of the battery in accordance with changes in a state of charge of the battery; and

    adapting one or more characteristics of a second charge packet of the charge signal which temporally follows the first charge packet if the first CPV of the battery is outside the predetermined range or is greater than a predetermined upper limit value.

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