Systems, methods and computer-readable media for modeling cell performance fade of rechargeable electrochemical devices
First Claim
1. A method wherein at least one act of the method is performed by a processor, the method comprising:
- developing a mechanistic level model of an electrochemical cell to determine performance fade characteristics of the electrochemical cell using;
first constant-current pulses applied to the electrochemical cell at a first aging period and at three or more current values bracketing a first exchange current density; and
second constant-current pulses applied to the electrochemical cell at a second aging period and at three or more current values bracketing a second exchange current density; and
analyzing the mechanistic level model to estimate performance fade characteristics over aging of a similar electrochemical cell.
2 Assignments
0 Petitions
Accused Products
Abstract
A system includes an electrochemical cell, monitoring hardware, and a computing system. The monitoring hardware periodically samples performance characteristics of the electrochemical cell. The computing system determines cell information from the performance characteristics of the electrochemical cell. The computing system also develops a mechanistic level model of the electrochemical cell to determine performance fade characteristics of the electrochemical cell and analyzing the mechanistic level model to estimate performance fade characteristics over aging of a similar electrochemical cell. The mechanistic level model uses first constant-current pulses applied to the electrochemical cell at a first aging period and at three or more current values bracketing a first exchange current density. The mechanistic level model also is based on second constant-current pulses applied to the electrochemical cell at a second aging period and at three or more current values bracketing the second exchange current density.
-
Citations
35 Claims
-
1. A method wherein at least one act of the method is performed by a processor, the method comprising:
-
developing a mechanistic level model of an electrochemical cell to determine performance fade characteristics of the electrochemical cell using; first constant-current pulses applied to the electrochemical cell at a first aging period and at three or more current values bracketing a first exchange current density; and second constant-current pulses applied to the electrochemical cell at a second aging period and at three or more current values bracketing a second exchange current density; and analyzing the mechanistic level model to estimate performance fade characteristics over aging of a similar electrochemical cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method wherein at least one act of the method is performed by a processor, the method comprising:
developing a mechanistic level model of an electrochemical cell to determine performance fade characteristics of the electrochemical cell using;
first constant-power pulses applied to the electrochemical cell at a first aging period and at three or more current values bracketing a first exchange current density; and
second constant-power pulses applied to the electrochemical cell at a second aging period and at three or more current values bracketing a second exchange current density; and
analyzing the mechanistic level model to estimate performance fade characteristics over aging of a similar electrochemical cell.- View Dependent Claims (12)
-
13. A method wherein at least one act of the method is performed by a processor, the method comprising:
- developing a mechanistic level model of an electrochemical cell to determine performance fade characteristics of the electrochemical cell using;
first constant-current pulses applied to the electrochemical cell at a first aging period and at three or more current values bracketing a first exchange current density; and
second constant-current pulses applied to the electrochemical cell at a second aging period and at three or more current values bracketing a second exchange current density;
analyzing the mechanistic level model to estimate performance fade characteristics over aging of a similar electrochemical cell; and
modifying at least one of a discharge process for, a charge process for, and composition of, the electrochemical cell responsive to the analyzing the mechanistic level model. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
- developing a mechanistic level model of an electrochemical cell to determine performance fade characteristics of the electrochemical cell using;
-
23. A system, comprising:
- an electrochemical cell;
monitoring hardware operably coupled to the electrochemical cell and configured for sampling cell characteristics of the electrochemical cell; and
a computing system operably coupled to the monitoring hardware and configured for;
developing a mechanistic level model of an electrochemical cell to determine performance fade characteristics of the electrochemical cell using the sampled cell characteristics for;
first constant-current pulses applied to the electrochemical cell at a first aging period and at three or more current values bracketing a first exchange current density; and
second constant-current pulses applied to the electrochemical cell at a second aging period and at three or more current values bracketing a second exchange current density; and
analyzing the mechanistic level model to estimate performance fade characteristics over aging of a similar electrochemical cell. - View Dependent Claims (24, 25, 26, 27, 28, 29)
- an electrochemical cell;
-
30. A non-transitory computer-readable medium including computer-executable instructions, which when executed on one or more processors, perform the acts comprising:
- developing a mechanistic level model of an electrochemical cell to determine performance fade characteristics of the electrochemical cell using;
first constant-current pulses applied to the electrochemical cell at a first aging period and at three or more current values bracketing a first exchange current density; and
second constant-current pulses applied to the electrochemical cell at a second aging period and at three or more current values bracketing a second exchange current density; and
analyzing the mechanistic level model to estimate performance fade characteristics over aging of a similar electrochemical cell. - View Dependent Claims (31, 32, 33, 34, 35)
- developing a mechanistic level model of an electrochemical cell to determine performance fade characteristics of the electrochemical cell using;
Specification