A purely mechanically triggered fire-fighting device for AGVs

By employing a fire-fighting device with a purely mechanical trigger structure during the lithium battery production process, which utilizes fusible metal sheets and high-pressure gas cylinders to trigger fire extinguishing, the problem of electrical circuit failure during lithium battery thermal runaway has been solved, achieving reliable fire extinguishing effects and reducing maintenance workload.

CN224421772UActive Publication Date: 2026-06-30XIAMEN ZHUNXIN INTELLIGENT MANUFACTURING FIRE EQUIPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIAMEN ZHUNXIN INTELLIGENT MANUFACTURING FIRE EQUIPMENT CO LTD
Filing Date
2025-05-15
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the current lithium battery production process, when a lithium battery experiences thermal runaway, the unstable power supply to the electrical circuits causes the fire extinguishing device to fail, and the maintenance workload is large, making it impossible to reliably trigger fire extinguishing in high-temperature environments.

Method used

It adopts a purely mechanical triggering structure, including a liquid tank, a temperature-controlled fire sprinkler head, a fusible metal sheet, and a high-pressure gas cylinder. It triggers fire extinguishing through mechanical means, avoiding electrical circuit failure and ensuring that the fire extinguishing device can work normally in high-temperature environments.

Benefits of technology

It achieves reliable fire suppression in the event of thermal runaway of lithium batteries, avoids failures caused by burnt electrical circuits, reduces maintenance workload, and improves the reliability and safety of the system.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a purely mechanically triggered fire-fighting device for AGVs. The device includes a liquid tank, at least one temperature-controlled fire sprinkler head, a high-pressure gas cylinder, and a mechanical triggering device. The liquid tank is equipped with a wave-damping device. The temperature-controlled fire sprinkler head is in fluid communication with the liquid tank and automatically opens when the temperature exceeds a first preset value. The high-pressure gas cylinder has a cylinder head valve with an opening handle and an outlet pipe leading to the liquid tank. The mechanical triggering device includes a fusible metal strip, a steel wire rope, and a spring. The fusible metal strip disconnects when the temperature exceeds a second preset value, triggering the cylinder head valve to open. The first preset value is greater than or equal to the second preset value. This purely mechanically triggered fire-fighting device for AGVs can be applied to cooling and extinguishing fires caused by thermal runaway during lithium battery production.
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