Device Monitors Electrical Energy Storage Unit Temperature Using Impedance

ChangeBridge: Patent Apps - Batteries (H01M)

Detected March 27th, 2026

Summary

The USPTO has published a patent application detailing a device and method for monitoring the temperature of electrical energy storage units using impedance measurements. The application, filed by inventors Bastian Beyfuss, Constantin Goldenberg, and Erich Kagleder, describes a system that determines impedance values of storage cell subsets to infer temperature.

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What changed

This document is a USPTO patent application (US20260088385A1) for a device and method to monitor the temperature of electrical energy storage units. The invention utilizes impedance measurements of parallel-arranged storage cells within series-arranged subsets to determine temperature. The application was filed on August 18, 2023, by inventors Bastian Beyfuss, Constantin Goldenberg, and Erich Kagleder.

As this is a patent application, it does not impose direct regulatory obligations or compliance deadlines on entities. However, companies involved in the development, manufacturing, or application of energy storage systems, particularly those with complex cell configurations, may find this technology relevant for R&D and intellectual property considerations. The publication date of the application is March 26, 2026.

Source document (simplified)

← USPTO Patent Applications

Device and Method for Monitoring the Temperature of an Electrical Energy Storage Unit

Application US20260088385A1 Kind: A1 Mar 26, 2026

Inventors

Bastian BEYFUSS, Constantin GOLDENBERG, Erich KAGLEDER

Abstract

A device and method for monitoring the temperature of an energy storage unit having M subsets of P storage cells, where M≥1 and/or P≥1, is provided. The P storage cells are arranged electrically in parallel with one another, and the M subsets are arranged electrically in series. The device is configured to determine M measured values of the impedance of the corresponding M subsets of P storage cells and to monitor the temperature of the energy storage unit based on the M measured values of the impedance.