×

Historical analysis of battery cells for determining state of health

  • US 8,796,993 B2
  • Filed: 09/12/2011
  • Issued: 08/05/2014
  • Est. Priority Date: 09/12/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method, comprising:

  • counting the number of times a battery cell of an array of battery cells is out of balance with other battery cells;

    determining a Coulomb threshold level based, in part, on the counted number of times;

    counting a number of Coulombs the battery cell is out of balance with the other battery cells; and

    setting a state-of-health flag when the counted number of Coulombs exceeds the Coulomb threshold level.

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