US 11,733,311 B2
Method of screening high rate electrochemical cells
Steven Davis, Greer, SC (US); Xiaofei Jiang, Clemson, SC (US); and Joseph Beauvais, Liberty, SC (US)
Assigned to Pacesetter, Inc., Santa Clara, CA (US)
Filed by Pacesetter, Inc., Sylmar, CA (US)
Filed on May 21, 2021, as Appl. No. 17/327,658.
Application 17/327,658 is a continuation of application No. 16/839,045, filed on Apr. 2, 2020, granted, now 11,041,912.
Application 16/839,045 is a continuation of application No. 15/816,198, filed on Nov. 17, 2017, granted, now 10,641,833, issued on May 5, 2020.
Claims priority of provisional application 62/424,064, filed on Nov. 18, 2016.
Prior Publication US 2021/0278469 A1, Sep. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 31/385 (2019.01); G01R 31/36 (2020.01); G01R 31/392 (2019.01)
CPC G01R 31/385 (2019.01) [G01R 31/3648 (2013.01); G01R 31/3865 (2019.01); G01R 31/392 (2019.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
activating an electrochemical cell;
measuring an open circuit voltage of the cell over a period of time to determine a voltage versus time function, wherein the period of time starts after activating the cell, and
the voltage versus time function results from multiple open circuit voltage measurements that include at least 100 open circuit voltage measurements taken between activating the cell and 24 hours after activating the cell; and
screening the cell for the presence of a failure mechanism by checking the voltage versus time function for a failure criteria.