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Super-hybrid composite material battery box and preparation method thereof

A composite material and battery box technology, used in the isolation of batteries from their environment, battery pack components, circuits, etc., can solve problems such as poor surface finish, long molding cycle, and inability to achieve high strength and stiffness Bond strength, easy forming effect

Pending Publication Date: 2022-05-17
义乌协同创新研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The battery box of continuous fiber reinforced resin matrix composite material has high cost and long molding cycle; SMC has the advantages of light weight, low cost, high production efficiency and short production cycle, but SMC uses chopped fibers and a large amount of fillers, and its products low mechanical properties
At the same time, due to the electrical insulation properties of SMC, when it is applied to auto parts, it cannot be directly painted through the swimming pool. It is necessary to add pigments to the SMC, spray paint after polishing the surface of the SMC, or coat a layer of metal powder on the surface before passing the swimming pool. For painting, the construction environment is poor and the production efficiency is low
Furthermore, after SMC products are painted, as the use time increases, the surface finish will deteriorate.
In addition, with the popularization of electric vehicles and the emergence of unmanned vehicles, anti-electromagnetic radiation and electromagnetic shielding will also become a new requirement for the functions of automotive parts, and SMC products are still unable to achieve the above functions

Method used

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  • Super-hybrid composite material battery box and preparation method thereof
  • Super-hybrid composite material battery box and preparation method thereof

Examples

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preparation example Construction

[0042] A method for preparing the battery box of the described hyper-hybrid composite material, comprising the following steps:

[0043] S1, respectively stamping two metal plates to form an inner metal shell 1 and an outer metal shell 3;

[0044] S2, put the inner metal shell 1 on the lower mold 4, then lay the sheet molding compound 2 on the inner metal shell 1, and then put the outer metal shell 3 on the top of the sheet molding compound 2, so that the outer metal The shells 3 are aligned with the centers of the upper molds 5, respectively.

[0045] S3, turn on the press, make the upper mold 5 close the lower mold 4 under the preset pressure, and then turn on the heating device to heat the upper mold 5 and the lower mold 6 at a preset temperature for a preset time;

[0046] S4, open the upper mold 5 and the lower mold 4, take out the formed battery box blank shell, and obtain a battery box made of a hyper-hybrid composite material after cleaning.

[0047] Wherein, in S2 ,...

Embodiment 1

[0052] Such as figure 1 As shown, a battery box made of ultra-hybrid composite materials includes an inner metal shell 1, an outer metal shell 3 and a sheet molding compound 2, the inner metal shell 1 is sleeved in the outer metal shell 3, The sheet molding compound 2 is connected between the inner metal shell 1 and the outer metal shell 3 .

[0053] The inner metal shell 1 and the outer metal shell 3 are made of 6061 aluminum alloy plates, and the outer surface of the inner metal shell 1 and the inner surface of the outer metal shell 3 are respectively sandblasted. The thicknesses of the inner metal shell 1 and the outer metal shell 3 are respectively 0.2 mm, and the thickness of the battery box made of super-hybrid composite material is 2 mm.

[0054] Wherein, the sheet molding compound 2 is an unsaturated polyester sheet molding compound available on the market, and the two sides of the sheet molding compound 2 are respectively impregnated with the inner metal shell 1 and ...

Embodiment 2

[0062] On the basis of Example 1, other conditions remain unchanged, and the inner metal shell 1 is replaced with 0.2mm thick B340LA cold-rolled steel plate, then the following effects can be achieved:

[0063] By measuring the thickness, the thickness of the formed battery box is 2mm, and the overall weight is 4.3kg. Compared with the aluminum alloy battery box of the same thickness, the weight is reduced by 12%; compared with the steel battery box of the same thickness, the weight is reduced by 69%. . At the same time, using the standard test of GB / T 2048-2008 "Determination of Plastic Combustion Performance by Horizontal and Vertical Methods", the vertical combustion level of this structure is V0 level, and the horizontal combustion level is HB level. Since the exterior is made of steel, it can be painted by electrophoresis and has the function of electromagnetic shielding.

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Abstract

The invention relates to a super-hybrid composite material battery box and a preparation method thereof, the super-hybrid composite material battery box comprises an inner-layer metal shell, an outer-layer metal shell and a sheet molding compound, the inner-layer metal shell is sleeved in the outer-layer metal shell, and the sheet molding compound is connected between the inner-layer metal shell and the outer-layer metal shell. According to the battery box disclosed by the invention, a metal-sheet molding compound (SMC)-metal laminated structure is adopted, and the metal shell with the two layers of outer surfaces has electromagnetic shielding and flame-retardant effects while providing certain strength, and can be directly subjected to electrophoretic coating at the same time. The sheet molding compound composite material in the middle reduces the weight of the battery box, provides higher strength and rigidity, is easy to form, and has higher bonding strength with metal.

Description

technical field [0001] The invention relates to the technical field of lightweight automobiles, in particular to a super-hybrid composite material battery box and a preparation method thereof. Background technique [0002] In recent years, due to the increasingly serious problems of energy and environmental protection, my country has vigorously promoted new energy vehicles, and the electric vehicle industry has developed rapidly. Lightweight materials are an important way to increase the mileage of electric vehicles. The battery box is used as a carrier for the battery. Under the premise of satisfying the performance, reducing its weight is of great significance to the lightweight of electric vehicles. At present, the materials used in the battery box of electric vehicles are mainly steel, aluminum alloy and composite materials. Among them, the battery box made of steel has a large weight and high energy consumption. Although the aluminum alloy battery box is easy to proc...

Claims

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Application Information

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IPC IPC(8): H01M50/231H01M50/224H01M50/227H01M50/24H01M50/244H01M50/249H05K9/00A62C3/16
CPCH01M50/231H01M50/227H01M50/224H01M50/244H01M50/249H01M50/24A62C3/16H05K9/0088
Inventor 贾晶晶杨文涛顾轶卓张佐光
Owner 义乌协同创新研究院
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