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Preparation method of heat-conductive and flame-retardant material for lithium batteries

A technology of flame-retardant materials and lithium batteries, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve problems such as dust explosion, unsatisfactory effect of heat-conducting materials, hidden safety hazards, etc., achieve low raw material cost, fast preparation method, Proportion and compatibility scientific and reasonable effect

Inactive Publication Date: 2016-11-23
NINGBO VEKEN BATTERY
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The method for preparing a heat-conducting flame-retardant material for a lithium battery in this embodiment includes the following steps:

[0014] (1) In terms of parts by mass, 30 parts of granite, 10 parts of magnetite, 3 parts of barium sulfate, 2 parts of coke, 5 parts of chalcocite powder, 3 parts of aluminum hydroxide, and 8 parts of Montmori pumice , 15 parts of titanium oxide, 5 parts of gypsum, 8 parts of potassium titanate, and 10 parts of silver are ground into powder to form a mixture filler, heated at a constant speed to 880°C at room temperature and sintered at a constant temperature for 4 hours, then cooled down to room temperature and then further crushed. use;

[0015] (2) In terms of parts by mass, 20 parts of aluminum oxide, 10 parts of zircon sand and 10 parts of eucryptite were heated at a constant rate to 820 ° C and sintered at a constant temperature for 4 hours as ceramic fillers, and then further ground after cooling down to room temperature s...

Embodiment 2

[0019] The method for preparing a heat-conducting flame-retardant material for a lithium battery in this embodiment includes the following steps:

[0020] (1) In terms of parts by mass, 35 parts of granite, 12 parts of magnetite, 4 parts of barium sulfate, 4 parts of coke, 7 parts of chalcocite powder, 5 parts of aluminum hydroxide, and 9 parts of Montmori pumice , 18 parts of titanium oxide, 8 parts of gypsum, 9 parts of potassium titanate, and 11 parts of silver are ground into powder to form a mixture filler, heated at a constant speed to 880°C at room temperature and sintered at a constant temperature for 6 hours, then cooled down to room temperature and then further crushed. use;

[0021] (2) In terms of parts by mass, 30 parts of aluminum oxide, 15 parts of zircon sand and 12 parts of eucryptite were heated at a constant rate to 820 ° C and sintered at a constant temperature for 5 hours as ceramic fillers, and then further ground after cooling down to room temperature s...

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PUM

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Abstract

The invention relates to a preparation method of a heat-conductive and flame-retardant material for lithium batteries. The method includes the following steps that 1, granite, magnetite, barium sulfate, coke, chalcocite powder, aluminum hydroxide, montmorillonite, titanium oxide, gypsum, potassium titanate and silver are ground into powder to form mixture filler, the mixture filler is hated to 880 DEG C at a uniform speed at the normal temperature and sintered for 4-8 h at the constant temperature, and the temperature is lowered to the normal temperature for cooling; 2, aluminum oxide, zircon sand and eucryptite are heated to 820 DEG C at a uniform speed and sintered for 4-6 h at the constant temperature to serve as ceramic filler; 3, the ground mixture filler and the ground ceramic filler are mixed evenly, the temperature is raised to 1160 DEG C for sintering, filler is obtained, and then the filler is ground to be 100-400 micrometers; 4, the filler is cooled, epoxy resin is added, and after even mixing, the heat-conductive and flame-retardant material for lithium batteries is obtained. The raw material cost is low, the proportion and compatibility are scientific and reasonable, the preparation method is fast to implement, and the working temperature of battery packs can be lowered by 10-20 DEG C with the obtained flame-retardant material.

Description

technical field [0001] The invention relates to a method for preparing a heat-conducting and flame-retardant material for a lithium battery, belonging to the technical field of lithium batteries. Background technique [0002] At present, lithium-ion batteries have many advantages such as high energy density, high output power, long charge and discharge life, no pollution, wide operating temperature range and small self-discharge. As a new type of high-energy chemical power source, it has encountered the greatest challenge in the process of solving human environmental pollution and energy crisis, that is, safety issues. The heat dissipation of the battery pack is not only related to the life of the battery pack itself, but also closely related to 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...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K13/06C08K9/00C08K3/30C08K3/04C08K3/22C08K3/08C08K3/34C09K5/14
Inventor 潘美姿刘旭曲鹏利赵亚
Owner NINGBO VEKEN BATTERY
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