US 12,442,846 B2
Circuitry for measurement of electrochemical cells
John P. Lesso, Edinburgh (GB); and Salvatore Caporale, Edinburgh (GB)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Oct. 5, 2023, as Appl. No. 18/481,481.
Prior Publication US 2025/0116691 A1, Apr. 10, 2025
Int. Cl. G01N 33/543 (2006.01); G01N 27/327 (2006.01); G01R 27/16 (2006.01)
CPC G01R 27/16 (2013.01) [G01N 27/3273 (2013.01); G01N 27/3274 (2013.01); G01N 33/5438 (2013.01)] 21 Claims
OG exemplary drawing
 
1. Circuitry for determining one or more characteristics of an electrochemical cell comprising a first working electrode, a second working electrode and a counter electrode, the circuitry comprising:
drive circuitry configured to:
apply a first stimulus to the first working electrode;
apply a compensation stimulus to one or more of the first working electrode, the second working electrode and the counter electrode;
measurement circuitry configured to:
measure a first signal at the first working electrode; and
measure a second signal at the second working electrode; and
processing circuitry configured to:
determine the one or more characteristics of the electrochemical cell based on the first signal or the second signal,
wherein the compensation stimulus is applied to compensate for cross talk between the first working electrode and the second working electrode.