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. 08, 2025
Filed:
May. 12, 2023
Element Energy, Inc., Menlo Park, CA (US);
Rainer Johannes Fasching, Mill Valley, CA (US);
Georgy Zerkalov, Santa Clara, CA (US);
Arnaud Devie, Hawthorne, CA (US);
Seth Marshall Kahn, San Francisco, CA (US);
Anthony John Stratakos, San Anselmo, CA (US);
Corrado Cammi, Sunnyvale, CA (US);
Anderson Rennie John, Santa Clara, CA (US);
Yoosok Saw, Seoul, KR;
Element Energy Inc., Menlo Park, CA (US);
Abstract
Described methods and systems are used for in-situ impedance spectroscopy analysis of battery cells in multi-cell battery packs. Specifically, the cell impedances are determined while the pack continues to operate, such as being charged or discharged. For example, the pack voltage/power output remains unchanged while this analysis is initiated, performed, and ended. Cell impedance is determined based on the cell's response to the signal applied to the cell. For example, a current through the cell is charged while monitoring cells' voltage response. Although the power output of the changes during this testing, but the operation of the pack is not impacted due to the power compensation provided by one or more other cells in the pack thereby ensuring uninterrupted operation of the pack. This in situ testing is provided by the unique architecture of the pack, comprising multiple nodes and individual node controllers.