Lithium battery heat-conducting flame-retardant material and preparation method thereof

A technology for flame retardant materials and lithium batteries, applied in the field of thermal conductive materials, can solve the problems of dust explosion, unsatisfactory thermal conductive materials, hidden safety hazards, etc., and achieve the effects of low raw material cost, fast preparation method, scientific and reasonable proportioning and compatibility

Inactive Publication Date: 2015-01-14
JIANGSU JIUXING NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main heat source of the working battery pack comes from the parts on the substrate. Generally, the temperature of a single part may reach 70-80°C during operation, which is likely to cause dust explosion and pose a great safety hazard. Unsatisfactory results

Method used

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  • Lithium battery heat-conducting flame-retardant material and preparation method thereof
  • Lithium battery heat-conducting flame-retardant material and preparation method thereof
  • Lithium battery heat-conducting flame-retardant material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Get the following raw materials by weight: 35 parts of granite, 12 parts of magnetite, 4 parts of coal, 2.5 parts of carbon (diamond powder), 4 parts of malachite, 4 parts of zeolite, 9 parts of Montmory pumice, 17 parts of carboniferous stone , 8 parts of gypsum, 9 parts of talcum powder, and 11 parts of silver. Grind the above components into powder and mix them uniformly to obtain a mixture filler. Heat it at a constant speed to 780°C at room temperature and sinter at a constant temperature for 6 hours. After cooling down to room temperature, further grinding shredded for use;

[0024] Take 29 parts of alumina ceramics and grind them as ceramic fillers, heat them up to 780°C at a constant speed and sinter at a constant temperature for 6 hours, then cool down to room temperature and then grind them further for use;

[0025] Then the crushed ceramic filler and the mixture filler are fully mixed and evenly heated to 1180°C for sintering to obtain the filler, which is cr...

Embodiment 2

[0028] Get 30 parts of following raw materials granite by weight, 15 parts of magnetite, 3 parts of coal, 3 parts of carbon (diamond micropowder), 3 parts of malachite, 5 parts of zeolite, 8 parts of Montmory pumice, 20 parts of carbonite, 5 parts of gypsum, 10 parts of talc powder, and 10 parts of silver. Grind the above components into powder and mix them evenly to obtain a mixture filler. Heat up to 780°C at a constant rate at room temperature and sinter at a constant temperature for 6 hours. After cooling down to room temperature, further crush stand-by;

[0029] Take 28 parts of alumina ceramics and grind them as ceramic fillers, heat them up to 780°C at a constant speed and sinter at a constant temperature for 6 hours, then cool down to room temperature and then grind them further for use;

[0030] Then the crushed ceramic filler and the mixture filler are fully mixed and evenly heated to 1180°C for sintering to obtain the filler, which is crushed to 200-300 microns,

...

Embodiment 3

[0033] Get the following raw materials by weight: 40 parts of granite, 10 parts of magnetite, 5 parts of coal, 2 parts of carbon (diamond powder), 5 parts of malachite, 3 parts of zeolite, 10 parts of Montmori pumice, 15 parts of carbonite , 10 parts of gypsum, 8 parts of talcum powder, and 12 parts of silver. Grind the above components into powder and mix them evenly to obtain a mixture filler. Heating at a constant rate at room temperature to 780°C and sintering at a constant temperature for 6 hours, then cooling down to room temperature and then further grinding shredded for use;

[0034] Take 30 parts of alumina ceramics and grind them as ceramic fillers, heat them up to 780°C at a constant speed and sinter at a constant temperature for 6 hours, then cool down to room temperature and then grind them further for use;

[0035] Then the crushed ceramic filler and the mixture filler are fully mixed and evenly heated to 1180°C for sintering to obtain the filler, which is crushe...

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Abstract

The invention discloses a lithium battery heat-conducting flame-retardant material. The invention is characterized in that the material is composed of the following components in percentage by weight: 10-50% of epoxy resin and 50-90% of filler. The filler is composed of a ceramic filler and a mixture filler. The mixture filler comprises the following components in parts by weight: 30-40 parts of granite, 10-15 parts of magnetite, 3-5 parts of coal, 2-3 parts of carbon, 3-5 parts of malachite, 3-5 parts of zeolite, 8-10 parts of Mengmoli pumice, 15-20 parts of coal stone, 5-10 parts of gypsum, 8-10 parts of talcum powder and 10-12 parts of silver. The ceramic filler is aluminum oxide ceramic. The weight ratio of the ceramic filler to the mixture filler is 4:1. The material can effectively lower the working temperature of the lithium battery pack, and prevent potential safety hazards caused by overhigh temperature. The material can avoid the problems of internal ignition and the like in the battery, thereby greatly enhancing the safety performance of the battery.

Description

technical field [0001] The invention relates to the field of heat-conducting materials, in particular to a heat-conducting and flame-retardant material for a lithium battery and a preparation method thereof. Background technique [0002] At present, lithium-ion battery is the most ideal and highest-tech rechargeable chemical battery in the world, and lithium battery pack technology is increasingly favored by various manufacturers. Among them, the heat dissipation of the battery pack is particularly concerned. The heat dissipation of the battery pack is not only related to the life and use of the battery pack itself, but also inseparable from the safe use of consumers. The main heat source of a working battery pack comes from the parts on the substrate. Generally, the temperature of a single part may reach 70-80°C during operation, which is likely to cause dust explosion and pose a great safety hazard. The effects are not ideal. Therefore, it is necessary to provide a new h...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K13/06C08K3/34C08K3/08C08K3/22C09K5/14
Inventor 萧睿昶
Owner JIANGSU JIUXING NEW ENERGY TECH
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