Battery state detection method, device, apparatus and computer readable storage medium

By embedding an optical waveguide sensor inside a lithium-ion battery, acquiring spectral curves and performing envelope analysis, the problem of refining battery state detection in existing technologies is solved, enabling accurate detection of the battery's internal state and improving battery safety and reliability.

CN117813520BActive Publication Date: 2026-07-24CONTEMPORARY AMPEREX TECHNOLOGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Filing Date
2022-06-15
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies make it difficult to achieve precise monitoring of the internal state of lithium-ion batteries, especially the accurate detection of information such as electrolyte turbidity and aging status, resulting in insufficient battery safety and reliability.

Method used

An optical waveguide sensor is implanted inside the battery to collect spectral curves and perform envelope analysis. The internal state of the battery is determined by the envelope curve, area, and extreme point information. The correlation between envelope information and state information is established to achieve accurate detection of battery state.

Benefits of technology

It enables precise detection of the internal state of the battery, improves the safety and reliability of the battery, and avoids safety issues caused by interface changes.

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Abstract

The embodiment of the application provides a battery state detection method, device and equipment and a computer readable storage medium, which collects a spectrum curve in a battery, performs envelope analysis based on the spectrum curve, and determines state change information in the battery according to a result of the envelope analysis. When the state in the battery changes, the spectrum curve in the battery usually changes. By performing envelope analysis on the spectrum curve, regular envelope change information of the spectrum in multiple modes can be determined, continuous response to the change in the battery is realized, and then the battery state information can be accurately analyzed according to the envelope information, and accurate detection of the state in the battery is realized.
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