Special heat-conductive insulating material for new energy automobile battery

Abstract

The invention discloses a special heat-conductive insulating material for a new energy automobile battery. The heat-conductive insulating material comprises the main raw materials in parts by weight:30-40 parts of POM plastics, 6-11 parts of hexagonal boron nitride micropowder, 5-10 parts of nanometer SiO2 powder, 3-4 parts of chopped carbon fiber particles, 1-2 parts of zinc oxide, 0.5-1 part ofpolyglycerol fatty acid ester, 0.5-1 part of cresyl diphenyl phosphate and 0.5-1 part of ethylene bisstearamide. The invention further discloses a preparation method of the special heat-conductive insulating material, and the preparation method comprises the continuous production processes: blending treatment, double-screw extrusion and injection molding by an injection molding machine. Due to the selection of a formula in which POM plastics, hexagonal boron nitride / calcium carbonate nanometer composite particles and modified silicon dioxide are adopted, the prepared composite has high heat conductivity, good insulativity, low density, low cost and good machinability and can be better adapted to the new energy automobile battery, the battery is uniform in heat radiation and capable of avoiding hot spots, local deformation caused by high temperature can be effectively reduced, and the service life can be prolonged.

Description

Technical field [0001] The invention belongs to the technical field of batteries for new energy vehicles, and specifically relates to a heat-conducting insulating material special for batteries for new energy vehicles and a preparation method thereof. Background technique [0002] The rapid development of electric vehicles will inevitably drive the rapid development of automotive power batteries. Regardless of whether it is a hybrid or pure electric vehicle, for many automobile manufacturers, driving power source technology is the key to the development of new energy vehicles, and the most fundamental thing is the breakthrough of battery technology. Therefore, the industrialization of automotive power batteries can greatly enhance the development of electric vehicles and contribute to the upgrading and upgrading of China's automotive industry. [0003] Current electric vehicle batteries often use lithium batteries or lead storage batteries, which have high capacity and energy dens...

AI Technical Summary

Problems solved by technology

[0003] At present, electric vehicle batteries often use lithium batteries or lead-acid batteries, which have high capacity density and energy density, but they have difficulty in heat dissipation and serious leakage, which reduces the efficacy of battery products and shortens their lifespan.