Battery pack abnormity monitoring device

By installing a three-way valve and a qualitative analysis sensor in each battery pack, combined with a gas analysis and detection system, the problem of monitoring gas in the early stages of lithium battery anomalies has been solved, achieving low-cost and efficient gas analysis and reducing the accident risk of energy storage power stations.

CN224081783UActive Publication Date: 2026-04-03JINAN BENAN TECH DEV CO LTD
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Patent Information

Application Number
CN202520535799.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2026-04-03
Estimated Expiration
2035-03-25

AI Technical Summary

Technical Problem

Existing technologies make it difficult to detect gas anomalies in the early stages of lithium battery malfunctions, leading to difficulties in handling accidents. Furthermore, gas monitoring is costly, requires high accuracy, and has short sensor lifespans, affecting the safety and efficiency of battery packs.

Method used

Each battery pack is equipped with a three-way valve and a qualitative analysis sensor. The three-way valve is switched after the qualitative analysis sensor detects abnormal gas, and the gas is introduced into the gas analysis and detection system for quantitative analysis. A single gas analysis and detection system is used to achieve multi-channel gas acquisition and rapid analysis.

Benefits of technology

It enables low-cost and efficient monitoring of battery pack gases, allowing for rapid analysis in the early stages of anomalies, reducing accident risks, and improving the safety and reliability of energy storage power stations.

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Abstract

The utility model relates to a battery pack abnormity monitoring device, and belongs to the technical field of battery fault monitoring, and the battery pack abnormity monitoring device comprises a three-way valve which is arranged corresponding to a battery pack, the battery pack is provided with a vent hole in advance, and the input end of the three-way valve is communicated with the vent hole in the corresponding battery pack; the qualitative analysis sensor corresponds to the three-way valve, and the input end of the qualitative analysis sensor is communicated with the first output end of the corresponding three-way valve; the output ends of all the qualitative analysis sensors are connected in parallel and are communicated with the gas exhaust port; the second output ends of all the three-way valves are connected in parallel and are communicated with the input end of the gas analysis and detection system, and the output end of the gas analysis and detection system is communicated with the gas exhaust port; when the qualitative analysis sensor monitors that gas is abnormal, the first output end of the corresponding three-way valve is closed, the second output end of the corresponding three-way valve is opened, and the gas analysis and detection system analyzes and detects the abnormal gas. The battery pack gas monitoring device has the beneficial effect of realizing monitoring of the battery pack gas in the engineering in a low-cost and high-efficiency manner.
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