Patent Application: EIS Measurement Apparatus and Battery System

ChangeBridge: Patent Apps - Power Supply (H02J)

Detected March 26th, 2026

Summary

The USPTO has published a patent application (US20260086163A1) for an electrochemical impedance spectroscopy (EIS) measurement apparatus and method, and a battery system. The application details a system for performing EIS measurements on battery cells during AC discharge, allowing for continuous impedance measurement even if a node voltage line is disconnected.

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What changed

This document is a published patent application from the USPTO detailing an "Electrochemical Impedance Spectroscopy Measurement Apparatus and Method, and Battery System." The application (US20260086163A1) describes an apparatus designed to perform EIS measurements on individual battery cells within a battery module during AC discharge. Key features include the ability to perform continuous impedance measurements and maintain functionality even if a specific node voltage line becomes disconnected.

This patent application does not impose new regulatory obligations or compliance requirements on regulated entities. It represents a disclosure of novel technology related to battery monitoring and diagnostics. Compliance officers in sectors involved with battery technology, energy storage, or advanced manufacturing may find this relevant for understanding potential future technological advancements and intellectual property landscapes in their industry.

Source document (simplified)

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ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY MEASUREMENT APPARATUS AND METHOD, AND BATTERY SYSTEM

Application US20260086163A1 Kind: A1 Mar 26, 2026

Inventors

Kyu Min HWANG, Sol San SON, Jae Hee LEE, Hyun Jun LEE, Ung JON

Abstract

Proposed are an electrochemical impedance spectroscopy measurement apparatus and method, and a battery system. The electrochemical impedance spectroscopy measurement apparatus includes an EIS measurement part connected to each of a plurality of battery cells included in a battery module, and configured to perform electrochemical impedance spectroscopy (EIS) measurement on each of the plurality of battery cells during AC discharge of the battery module, and an AC discharge switching part connected to the battery module to form an AC discharge path, and configured to supply a driving voltage to a power consumption distribution switching element included in the AC discharge path through a plurality of driving voltage supply paths connected to nodes of the plurality of battery cells electrically connected. Electrochemical impedance spectroscopy (EIS) measurement for the battery may be performed, and impedance measurement may be continuously performed even when a particular node voltage line connected to the battery is disconnected.