The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2021
Filed:
Dec. 05, 2018
The Johns Hopkins University, Baltimore, MD (US);
Rengaswamy Srinivasan, Ellicott City, MD (US);
Bliss G. Carkhuff, Laurel, MD (US);
The Johns Hopkins University, Baltimore, MD (US);
Abstract
An example battery cell diagnostic apparatus is provided that may include control circuitry, a current source, measurement circuitry, and a first and a second multiplexer. The control circuitry may be configured to control the first multiplexer to electrically connect the measurement circuitry to a battery cell and control the second multiplexer to electrically connect the current source to the battery cell to apply a current, output from the current source, at each of a set of frequencies to the battery cell. The control circuitry may also be configured to receive measurements from the measurement circuitry at each of the frequencies, which may include respective frequencies that correlate to an electrolytic resistance of the battery cell, an anode impedance of the battery cell, and a cathode impedance of the battery cell. Similar measurements may also be taken for each cell in a battery.