Aerogel heat insulation sleeve for battery and preparation method of aerogel heat insulation sleeve

A technology of heat insulation sleeve and airgel, which is applied in the direction of electrical components, battery pack parts, applications, etc., can solve the damage of microfiber sleeve, affect the performance of heat insulation sleeve, and the poor flame retardancy of heat insulation cotton, etc. problem, to achieve the effect of solving the cumbersome winding process, accelerating the growth rate of rubber particles, and uniform molding

Pending Publication Date: 2021-09-28
GUIZHOU AEROSPACE WUJIANG MACHINERY & ELECTRICITYEQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame retardancy of heat insulation cotton is poor, so it is not suitable for new energy vehicle batteries and military equipment thermal batteries
The canister battery usually adopts traditional airgel heat insulation sheets and mica sheets, which are covered layer by layer for heat insulation, and the process is cumbersome.
In addition, conventional stirring methods such as magnetic stirring method and mechanical stirring method are often used in the methods of preparing heat insulation jackets from airgel at present, but these methods will damage the microfiber sleeve during the stirring process. Affects the performance of the insulation sleeve

Method used

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  • Aerogel heat insulation sleeve for battery and preparation method of aerogel heat insulation sleeve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown, an airgel heat insulation sleeve for batteries includes a cylindrical sleeve 1 with one end closed, and grooves 2 are opened in the sleeve 1 along the axial direction, and the number of the grooves 2 is 2 , and evenly distributed in the circumferential direction, for placing battery lines.

[0021] In order to ensure the heat insulation performance of the heat insulation sleeve, the wall thickness of the sleeve 1 is 3 mm, the bottom thickness is 8 mm, and the width of the groove 2 is 1.5 mm.

[0022] The preparation method of the airgel heat insulation sleeve for the battery described above comprises the following steps:

[0023] (1) Continuously pump the uniform ultrafine fiber slurry into the hollow special-shaped mold at a rate of 30ml / min, so that the ultrafine fiber slurry flows evenly to all corners of the mold, and at the same time use a vacuum pump for continuous suction. The rate of the aqueous solution is 15ml / min, the solution in ...

Embodiment 2

[0029] Such as figure 1 As shown, an airgel heat insulation sleeve for batteries includes a cylindrical sleeve 1 with one end closed, and a groove 2 is opened in the sleeve 1 along the axial direction, and the number of the groove 2 is 1 , for placement of battery lines.

[0030] In order to ensure the heat insulation performance of the heat insulation sleeve, the wall thickness of the sleeve 1 is 1.5mm, the bottom thickness is 8mm, and the width of the groove 2 is 3mm, which is used to place the battery circuit.

[0031] The preparation method of the airgel heat insulation sleeve for the battery described above comprises the following steps:

[0032] (1) Continuously pump the uniform ultrafine fiber slurry into the hollow special-shaped mold at a rate of 20ml / min, so that the ultrafine fiber slurry flows evenly to all corners of the mold. The rate of the aqueous solution is 10ml / min, the solution in the slurry is extracted, and the fiber is used to build and shape independe...

Embodiment 3

[0038] Such as figure 1 As shown, an airgel heat insulation sleeve for batteries includes a cylindrical sleeve 1 with one end closed, and grooves are opened in the sleeve 1 along the axial direction, and the number of the grooves is 3, and Evenly distributed in the circumferential direction, used to place battery lines.

[0039] In order to ensure the heat insulation performance of the heat insulation sleeve, the wall thickness of the sleeve 1 is 1.5mm, the bottom thickness is 8mm, and the width of the groove 2 is 1mm, which is used to place the battery circuit.

[0040] The preparation method of the airgel heat insulation sleeve for the battery described above comprises the following steps:

[0041] (1) Continuously pump the uniform ultrafine fiber slurry into the hollow special-shaped mold at a rate of 35ml / min, so that the ultrafine fiber slurry flows evenly to all corners of the mold, and at the same time use a vacuum pump for continuous suction. The rate of the aqueous ...

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Abstract

The invention discloses an aerogel heat insulation sleeve for a battery. The aerogel heat insulation sleeve for the battery comprises a cylindrical sleeve body with one end sealed, wherein grooves are formed in the sleeve body in an axis direction, and the number of the grooves is 1-4, and the grooves are evenly distributed in the circumferential direction. The preparation method comprises the following steps: (1) continuously pumping uniform superfine fiber slurry into a hollow special-shaped mold, allowing fibers to be stacked in the mold and to be automatically woven and formed, and then carrying out drying and demolding to obtain a superfine fiber sleeve; (2) preparing a silicon dioxide micelle particle solution; (3) adding the silicon dioxide micellar particle solution into the superfine fiber sleeve, and then conducting treatment by using a mechanical wave dispersion method to obtain a heat insulation sleeve gel preform; (4) putting the heat insulation sleeve gel preform into an alcoholic solution of a water repellent for modification; and (5) prefabricating the modified heat insulation sleeve gel, and conducting drying and demolding to obtain the aerogel heat insulation sleeve for the battery. The sleeve is uniformly formed, and the defects of non-uniform gum dipping, bending, cavities and the like are effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of battery protection, and in particular relates to an airgel heat-insulating sleeve for batteries and a preparation method thereof. Background technique [0002] Heat insulation materials are divided into two categories: porous materials and heat reflective materials. The former uses the pores contained in the material itself to insulate heat, because the thermal conductivity of the air or inert gas in the pores is very low, such as foam materials, fiber materials, etc.; the latter material has a high reflection coefficient and can reflect heat. Such as gold, silver, nickel, aluminum foil or metal-plated polyester, polyimide film, etc. The aerospace industry has strict requirements on the weight and volume of the insulation materials used, and often requires them to have sound insulation, vibration reduction, and corrosion resistance. Due to the excellent characteristics of light weight, softness, impact ...

Claims

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Application Information

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IPC IPC(8): C04B30/02C04B38/00H01M50/102H01M50/117H01M50/131
CPCC04B38/0045C04B30/02H01M50/102H01M50/117H01M50/131C04B2201/32C04B2201/20C04B2111/00844C04B14/064C04B14/38Y02E60/10
Inventor 陈维维丁维华张陆军夏佰慧郭慧玲何雍
Owner GUIZHOU AEROSPACE WUJIANG MACHINERY & ELECTRICITYEQUIP
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