Thermal insulation mat, energy storage device and method for manufacturing a thermal insulation mat

By combining the inorganic energy-absorbing layer and the inorganic heat-insulating layer, the expansion filler expands to resist the expansion force of the battery cell when the cell is thermally runaway. This solves the problems of insufficient heat insulation, high temperature resistance and high temperature compressibility of the heat insulation pad in energy storage equipment, and achieves efficient heat blocking and structural stability.

CN122402003APending Publication Date: 2026-07-17EVE ENERGY CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
EVE ENERGY CO LTD
Filing Date
2026-03-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing thermal insulation pads cannot simultaneously meet the requirements of thermal insulation, high temperature resistance, and high temperature compressibility in energy storage devices, resulting in an inability to effectively block heat transfer during thermal runaway and increasing the risk of accidents.

Method used

The design employs a combination of an inorganic energy-absorbing layer and an inorganic heat-insulating layer. The expansion filler expands at a preset temperature threshold to resist the expansion force of the battery cell, and the high-temperature resistance of the inorganic material ensures the integrity of the heat insulation pad in high-temperature environments.

Benefits of technology

It effectively blocks heat transfer in the event of thermal runaway, maintains the insulation and structural stability of the insulation pad, and reduces the risk of accidents.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of heat insulation pads, in particular to a heat insulation pad, an energy storage device and a preparation method of the heat insulation pad. The heat insulation pad comprises an inorganic energy absorption layer and an inorganic heat insulation layer. The inorganic energy absorption layer is arranged on the outer side of an electric core and has a flexible matrix and an expanded filler. The flexible matrix can be bent, and the expanded filler is filled in the flexible matrix. The inorganic heat insulation layer is connected with the inorganic energy absorption layer, and the heat insulation property of the inorganic heat insulation layer is greater than that of the inorganic energy absorption layer. The inorganic energy absorption layer is configured to: when the outer side temperature of the electric core reaches or exceeds a preset temperature threshold, the expanded filler can be expanded, and at least part of the inorganic energy absorption layer is expanded to resist the expansion of the electric core. In the heat insulation pad, the inorganic energy absorption layer and the inorganic heat insulation layer can meet the requirements of the energy storage device in heat insulation property, high-temperature resistance and high-temperature compression at the same time.
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