▎ 摘　　要

NOVELTY - Thermal system management method involves: (1) preparing and arranging fireproof silicone rubber composite material in gaps among all units of electric automobile power battery, automatically changing heat conductivity coefficient of material based on temperature change of the gaps among all the battery units, automatically adjusting a thermal system, ensuring safety of all battery units having flame-retardant and fireproof performances, automatically performing following steps, or continuously changing the steps, based on temperature change; (2) automatic heat dissipation is done when temperature is lower than 100degrees Celsius, and the material has high thermal conductivity coefficient of 0.5-3W/(m.K); (3) automatic heat insulation is done when temperature is 150-200degrees Celsius, and the heat conductivity coefficient of material is gradually reduced to low value of 0.2-0.02W/(m.K); (4) automatic flame retardance is carried out when temperature is further increased to 400-800degrees Celsius. USE - The method is used for thermal system management of electric automobile power battery. ADVANTAGE - The thermal system management method enables the new energy automobile battery to satisfy the dual requirements of heat dissipation and fire prevention safety. The method enables technical contradiction of heat dissipation and heat insulation, and fire prevention by the fusion of three functional silicone rubber technologies, namely a filling type heat conduction composite material technology, a foam rubber technology and a porcelainable silicone rubber technology. DETAILED DESCRIPTION - A thermal system management method involves: (1) preparing and arranging a fireproof silicone rubber composite material in gaps among all units of an electric automobile power battery, automatically changing the heat conductivity coefficient of the material based on the temperature change of the gaps among all the battery units, automatically adjusting a thermal system, ensuring the safety of all the battery units having flame-retardant and fireproof performances, automatically selecting one of the following steps based on temperature change, or continuously changing based on temperature change, to carry out the complex management of the thermal system of the electric automobile power battery; (2) automatic heat dissipation is done when the temperature is lower than 100degrees Celsius, and the material has high thermal conductivity coefficient of 0.5-3W/(m.K); (3) automatic heat insulation is done when the temperature is 150-200degrees Celsius, and the heat conductivity coefficient of the material is gradually reduced to low value of 0.2-0.02W/(m.K); (4) automatic flame retardance is carried out when the temperature is further increased to 400-800degrees Celsius, the material is gradually changed from a soft rubber state to a porous ceramic state, the structural integrity of the shape is always kept in the changing process, to enable the functions of fire prevention, heat insulation and automatic flame retardance. INDEPENDENT CLAIMS are included for: 1. preparation of fireproof silicone rubber composite material. The method involves: (1) taking 100 pts. wt. silicon rubber matrix, 20-300 pts. wt. heat-conducting functional filler, 1-10 pts. wt. foaming agent, 10-20 pts. wt. porcelain forming functional filler, 5-15 pts. wt. flame retardant and 1-5 pts. wt. auxiliary agents; (2) adding the raw materials into a kneading machine, uniformly kneading and defoaming in vacuum; (3) hot-pressing and vulcanizing the mixture by using a flat vulcanizing instrument to form fireproof silicone rubber composite material. 2. fireproof silicone rubber composite material. DESCRIPTION OF DRAWING(S) - The drawing shows microscopic image of fireproof silicon rubber composite material at normal temperature heat-conducting state and high temperature heat-insulating state.