Electrochemical impedance spectroscopy (EIS) analyzer and method of using thereof
First Claim
Patent Images
1. A system, comprising:
- an electrochemical device having two or more cells;
an electrochemical impedance spectroscopy (“
EIS”
) analyzer having two or more channel inputs;
a matrix switch connected between the electrochemical device and the EIS analyzer, wherein the matrix switch is controllable to electrically connect each of the two or more channel inputs of the EIS analyzer to each of the two or more cells of the electrochemical device; and
a processor connected to the EIS analyzer and the matrix switch, wherein the processor is configured with processor-executable instructions to perform operations comprising;
controlling the matrix switch to align each of plurality of subsets of a plurality of the two or more cells of the electrochemical device for concurrent impedance testing with a respective one of the two or more channel inputs of the EIS analyzer;
concurrently injecting a test waveform into each of the plurality of aligned subsets of the plurality of the two or more cells of the electrochemical device.
3 Assignments
0 Petitions
Accused Products
Abstract
Systems, methods, and devices of the various embodiments provide a hardware and software architecture enabling electrochemical impedance spectroscopy (“EIS”) to be performed on multiple electrochemical devices, such as fuel cells, at the same time without human interaction with the electrochemical devices. In an embodiment, a matrix switch may connect each cell of a fuel cell stack individually to an EIS analyzer enabling EIS to be performed on any fuel cell in the fuel cell stack. In a further embodiment, the EIS analyzer may be a multi-channel EIS analyzer, and the combination of the matrix switch and multi-channel EIS analyzer may enable EIS to be performed on multiple fuel cells simultaneously.
48 Citations
20 Claims
-
1. A system, comprising:
-
an electrochemical device having two or more cells; an electrochemical impedance spectroscopy (“
EIS”
) analyzer having two or more channel inputs;a matrix switch connected between the electrochemical device and the EIS analyzer, wherein the matrix switch is controllable to electrically connect each of the two or more channel inputs of the EIS analyzer to each of the two or more cells of the electrochemical device; and a processor connected to the EIS analyzer and the matrix switch, wherein the processor is configured with processor-executable instructions to perform operations comprising; controlling the matrix switch to align each of plurality of subsets of a plurality of the two or more cells of the electrochemical device for concurrent impedance testing with a respective one of the two or more channel inputs of the EIS analyzer; concurrently injecting a test waveform into each of the plurality of aligned subsets of the plurality of the two or more cells of the electrochemical device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method, comprising:
-
selecting a plurality of cells of an electrochemical device for concurrent impedance testing of at least a subset of the selected plurality of cells; selecting a channel input of an electrochemical impedance spectroscopy (“
EIS”
) analyzer from a plurality of channel inputs for each of a plurality of subsets of the selected plurality of cells for concurrent impedance testing;controlling a matrix switch connected between the electrochemical device and the EIS analyzer to align each of the plurality of subsets of the selected plurality of cells of the electrochemical device for concurrent impedance testing with its respective selected channel input of the EIS analyzer; concurrently injecting a test waveform into each of the plurality of aligned subsets of the selected plurality of cells of the electrochemical device; controlling the EIS analyzer to receive a waveform on the selected channel input of the EIS analyzer from each of the plurality of aligned subsets of the selected plurality of cells of the electrochemical device for concurrent impedance testing via the matrix switch in response to the injected test waveform; and monitoring an impedance response of each of the plurality of aligned subsets of the selected plurality of the cells of the electrochemical device in response to the injected test waveform. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification