×

Diffusion-limited adaptive battery charging

  • US 9,071,071 B2
  • Filed: 03/10/2014
  • Issued: 06/30/2015
  • Est. Priority Date: 04/11/2008
  • Status: Active Grant
First Claim
Patent Images

1. A method for adaptively charging a battery, wherein the battery is a lithium-ion battery that includes a transport-limiting electrode governed by diffusion, an electrolyte separator and a non-transport-limiting electrode, comprising while the battery is charging:

  • charging the battery with a fixed current for a fixed time period;

    entering a zero current state in which the charging current is set to zero;

    during the zero current state, measuring an open circuit voltage for the battery at two times while the open circuit voltage relaxes toward a steady state; and

    calculating a charging current or a charging voltage based on the measured open circuit voltages; and

    applying the calculated charging current or the calculated charging voltage to the battery.

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