Multi-layer fireproof material for battery and manufacturing method of multi-layer fireproof material

Abstract

The invention discloses a multi-layer fireproof material for a battery. The multi-layer fireproof material comprises a fireproof material body, wherein the fireproof material body is composed of two layers of glass fiber cloth and a layer of ceramic silicone rubber, the two layers of glass fiber cloth are attached to the upper surface and the lower surface of the ceramic silicone rubber respectively, and the outer surface of the fireproof material body is wrapped with silica gel. Compared with an existing fireproof material between batteries, the multi-layer structure material provided by the invention has higher impact resistance, and the impact resistance time and the impact resistance frequency of the multi-layer structure material are obviously better than the impact resistance time and the impact resistance of the existing fireproof material; and the produced material is lighter and thinner, and the silica gel wrapping the outer surface of the fireproof material body can quickly conduct heat on the surfaces of the batteries to the outside, so the heat dissipation efficiency of the battery is improved, and the thermal runaway probability of the battery is reduced.

Description

technical field [0001] The invention relates to the technical field of fireproof materials, in particular to a multilayer fireproof material for batteries and a manufacturing method thereof. Background technique [0002] With the development of society and the progress of science, the energy sources of automobiles are becoming more and more diversified. Now there are new energy vehicles such as hybrid electric vehicles and pure electric vehicles. During the use of new energy vehicles, the heat generated by the chemical reaction inside the battery The rate is much higher than the heat dissipation rate, and a large amount of heat accumulates inside the battery, causing the battery temperature to rise rapidly, eventually causing the battery to catch fire or explode, resulting in thermal runaway of the battery. [0003] Because thermal runaway usually reacts very quickly and has a great impact, in order to protect the personal safety of users to the greatest extent when the batt...

AI Technical Summary

Problems solved by technology

[0002] With the development of society and the progress of science, the energy sources of automobiles are becoming more and more diversified. Now there are new energy vehicles such as hybrid electric vehicles and pure electric vehicles. During the use of new energy vehicles, the heat generated by the chemical reaction inside the battery The rate is much higher than the heat dissipation rate, and a large amount of heat accumulates inside the battery, causing the battery temperature to rise rapidly, eventually causing the battery to catch fire or explode, resulting in thermal runaway of the battery

[0003] Because thermal runaway usually responds very quickly and has a great impact, in order to protect the personal safety of users to the greatest extent when the battery thermal runaway occurs, the battery will be covered with fireproof materials, but the existing solutions The material has good fire resistance, but its impact resistance is poor. In addition, in order to ensure the safety of personnel to the greatest extent and reduce vehicle damage, sometimes the battery is fully or half wrapped, which will reduce the battery life. Heat dissipation efficiency, improving the probability of thermal runaway of the battery

Images