Fire blanket special for lithium battery fire fighting

The fire blanket, designed for lithium battery fires, features a multi-layered composite structure. By releasing a hydrogel fire extinguishing composition through ruptures in the fire layer, it achieves rapid fire suppression and continuous cooling, solving the problem of poor performance of existing fire blankets in lithium battery fires and providing an efficient solution for fighting lithium battery fires.

CN122124416APending Publication Date: 2026-06-02NANJING LITAI NEW ENERGY TECH CO LTD
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Patent Information

Application Number
CN202610325779.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-17
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing fire blankets lack the ability to continuously cool down lithium battery fires, and cannot effectively suppress internal battery reactions and temperature buildup, resulting in a high risk of reignition. Furthermore, liquid extinguishing agents are difficult to store and apply in blanket-shaped products.

Method used

Design a multi-layered composite fire blanket for lithium battery fire fighting, including a fire-facing layer, an intermediate layer, and a fire-dissipating layer. When the fire-facing layer is exposed to fire, it breaks to release the hydrogel fire extinguishing composition of the intermediate layer. The intermediate layer contains an intumescent flame retardant and a gelling agent for rapid fire extinguishing and continuous cooling. The fire-dissipating layer is made of a high-temperature resistant material to block open flames.

Benefits of technology

It achieves rapid, targeted, and controllable extinguishing agent release, significantly improving the speed and efficiency of fire extinguishing response. It can effectively cover the fire source, suppress the spread of flames, and prevent reignition through the continuous cooling effect of hydrogel. It is suitable for various lithium battery fire protection applications.

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Abstract

The invention belongs to the related field of lithium battery matched fire extinguishing equipment, and discloses a special fire extinguishing blanket for lithium battery fire fighting, the special fire extinguishing blanket comprises a fire facing layer, a middle layer and a far fire layer, the fire facing layer actively and instantly cracks when meeting open fire, and a hydrogel fire extinguishing composition of the middle layer gushes out, so that rapid and fixed-point release of the fire extinguishing composition is realized; the middle layer is prepared from a hydrogel fire extinguishing composition packaged in the fire facing layer, and the hydrogel fire extinguishing composition comprises a phosphorus-based flame retardant, a nitrogen-based flame retardant, an intumescent flame retardant, a gelling agent, water and the like which are combined together to efficiently extinguish fire through functional cooperation of the components; and the far fire layer is made of a high-temperature-resistant material and is used for blocking open fire and / or smoke diffusion generated when the lithium battery is in a fire disaster. The device has multiple functions of oxygen isolation, continuous cooling and the like, can effectively cover a fire source and inhibit flame spreading, and can penetrate into the lithium battery to prevent re-combustion, so that the device is particularly suitable for various lithium battery fire scenes.
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