Monitoring device for an electric accumulator

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AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
The system uses electro-acoustic transducers to detect gas generation in electric accumulators by analyzing ultrasonic wave signals, enabling early detection and prevention of damage.

FR3166977A1Pending Publication Date: 2026-04-03VITRUVENS

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Patent Information

Application Number: FR2024010335
Authority / Receiving Office: FR · FR
Patent Type: Applications
Current Assignee / Owner
Filing Date: 2024-09-27
Publication Date: 2026-04-03

Application Information

Patent Timeline

27 Sep 2024

Application

FR2024010335

03 Apr 2026

Publication

FR3166977A1

IPC: G01R31/36; G01H1/00; H01M10/48

CPC: H01M10/48; G01N29/343; G01N2291/2697; G01N2291/102; G01N2291/048; G01N2291/015; G01N2291/02433; G01N29/4427

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Application Domain

Vibration measurement in solids Analysing solids using sonic/ultrasonic/infrasonic waves

Technology Topics

Transducer Hemt circuits

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AI Technical Summary

Technical Problem

Existing methods for detecting gas generation in electric accumulators, such as pressure sensors and gas sensors, suffer from low signal-to-noise ratios and delayed detection, leading to potential damage from gas accumulation.

Method used

A system using electro-acoustic transducers to emit and receive ultrasonic waves, converting them into electrical signals for detecting outgassing by analyzing maximum amplitude and time variation, with a processing circuit to compare against thresholds.

Benefits of technology

Early detection of outgassing allows preventive measures, preventing damage to the electric accumulator before thermal runaway occurs.

✦ Generated by Eureka AI based on patent content.

Patent Text Reader

Abstract

Monitoring device for an electric accumulator This description relates to a system (5) comprising an electric accumulator (10) and a device (20) for detecting outgassing of said electric accumulator (10).The outgassing detection device (20) comprises a first electro-acoustic transducer (22) based on said electrical accumulator (10) and configured to emit ultrasonic waves (US) into said electrical accumulator (10), a second electro-acoustic transducer (24) for receiving the ultrasonic waves (US) emitted by the first electro-acoustic transducer (22), based on said electrical accumulator (10) and configured to convert the received ultrasonic waves (US) into an electrical signal (S), and an electrical signal (S) processing circuit (28) configured to determine a maximum amplitude (SA) of the electrical signal (S), and to detect outgassing by comparing the maximum amplitude (SA) or the temporal variation of the maximum amplitude (SA) to a threshold. Figure for the abstract: Fig. 1.

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