Special heat-conductive insulating material for new energy automobile battery
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A heat-conducting insulating material and new energy vehicle technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve problems such as heat dissipation difficulties, leakage, shortened life, and reduced efficacy of battery products, so as to avoid burning spots and improve service life , good insulation effect
Inactive Publication Date: 2018-10-16
湖北娅安科技开发有限公司
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[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.
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preparation example Construction
[0037] A preparation method of a heat-conducting insulating material special for a new energy vehicle battery includes the following steps:
[0038] Step 1. Preparation of hexagonal boron nitride nanopowder:
[0039] S1. Add the hexagonal boron nitride powder to ethanol, and ultrasonically disperse it for 10-15 minutes to obtain a milky white liquid, add it to a three-necked flask, then add KOH solution, magnetically stir and reflux in a silicon oil bath at 95-105°C for 15- 18h, distill out ethanol, and filter the resulting solution to obtain a hydroxylated hexagonal boron nitride filter cake;
[0040] The concentration of the substance in the KOH solution is 5mol / L;
[0041] The mass ratio of the hexagonal boron nitride powder, ethanol, and KOH solution is 1:8-11:50-60;
[0042] The moisture content of the hexagonal boron nitride filter cake obtained in this step is about 55-65%;
[0043] S2. Add the above-mentioned hydroxylated hydroxylated hexagonal boron nitride to benzyl benzoate, ...
Embodiment 1
[0065] A heat-conducting insulating material special for new energy vehicle batteries. The main raw materials of the heat-conducting insulating material in parts by weight include: 30 parts of POM plastic, 6 parts of hexagonal boron nitride powder, and nano-SiO 2 5 parts of powder, 3 parts of chopped carbon fiber particles, 1 part of zinc oxide, 0.5 part of polyglycerin fatty acid ester, 0.5 part of tolyl diphenyl phosphate, 0.5 part of ethylene bisstearamide.
Embodiment 2
[0067] A heat-conducting insulating material special for new energy vehicle batteries. The main raw materials of the heat-conducting insulating material include: 35 parts of POM plastic, 8 parts of hexagonal boron nitride powder, and nano-SiO 2 8 parts of powder, 3.5 parts of chopped carbon fiber particles, 1.5 parts of zinc oxide, 0.8 parts of polyglycerin fatty acid ester, 0.8 parts of tolyl diphenyl phosphate, 0.7 parts of ethylene bisstearamide.
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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...
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Application Information
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