2results about How to "Low thermal diffusivity" patented technology

The application discloses a kind of silica aerogel-based thermal / cool composite materials and preparation method thereof, comprising the following steps: superhydrophobic silica aerogel powder is dispersed in aqueous phase, and forms water-gas gel type emulsion;The reactive polyethylene glycol aqueous solution is dispersed in the water-gas gel type emulsion, then initiator is added, and polymerization crosslinking is formed wet gel, and the silica aerogel-based thermal / cool composite material is obtained by drying.The application disperses superhydrophobic SiO2 Aerogel powder in water to form emulsion, then introduces reactive phase change material polyethylene glycol in the continuous water phase of emulsion, and obtains SiO2 Aerogel-based thermal composite material with solid-solid phase change function by reaction curing, and the obtained composite material has the advantages of low thermal conductivity, low heat transfer coefficient, high phase change enthalpy, humidity insensitivity and the like.

A fire-fighting circuit in an energy storage system, comprising a fire detection module, a first comparison module, a second comparison module, a high-voltage breaking module and a fire-fighting module; the fire detection module is used to output a voltage signal according to the fire condition of the energy storage system; the inputs of the first comparison module and the second comparison module are connected to the output of the fire detection module, and the reference voltage of the first comparison module is lower than that of the second comparison module; the output of the first comparison module is connected to the high-voltage breaking module, and the high-voltage breaking module is controlled by the high level to cut off the connection of the power battery of the energy storage system; the output of the second comparison module is connected to the fire-fighting module, and the fire-fighting module is triggered by the high level output by the second comparison module to inject a fire-retardant substance into the battery pack of the power battery.