×

Secondary battery reuse method, vehicle drive power source, and vehicle

  • US 9,406,982 B2
  • Filed: 11/23/2012
  • Issued: 08/02/2016
  • Est. Priority Date: 11/24/2011
  • Status: Active Grant
First Claim
Patent Images

1. A secondary battery reuse method for a secondary battery including a secondary battery pack having a plurality of modules, each module being formed of a secondary battery cell or a secondary battery stack containing a plurality of secondary battery cells, the method comprising:

  • measuring a resistance and a capacity of each module;

    comparing the measured resistance of each module with a preset first threshold value;

    comparing the measured capacity of each module with a preset second threshold value;

    determining a module to be a reusable module when its measured resistance is less than or equal to the first threshold value and its measured capacity is greater than or equal to the second threshold value;

    determining a module to be a non-reusable module when its measured resistance is larger than the first threshold value or its measured capacity is less than the second threshold value; and

    constructing a new secondary battery pack by combining the reusable module with an unused module or a module equivalent to the unused module, and placing a secondary battery provided with this new secondary battery pack in use,wherein the first threshold value and the second threshold value are set using as a condition that a degree of deterioration in the resistance and a degree of deterioration in the capacity of a module in a secondary battery pack in a used secondary battery are respectively equal to a degree of deterioration in the resistance and a degree of deterioration in the capacity of a module in a secondary battery pack prior to use.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×