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A molding process method and product for the upper cover of a composite material battery box for preventing thermal runaway

A technology of composite materials and molding process, which is applied in the direction of battery pack components, circuits, electrical components, etc., can solve the problems of lack of shape maintenance ability, and achieve the effect of improving thermal runaway ability, low cost, and improving safety

Active Publication Date: 2020-07-28
溧阳康本复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mainstream weight reduction solution in the market is the upper cover with SMC technology, but the SMC upper cover is made of chopped fibers, which does not have the ability to maintain shape after high-temperature resin ablation

Method used

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  • A molding process method and product for the upper cover of a composite material battery box for preventing thermal runaway
  • A molding process method and product for the upper cover of a composite material battery box for preventing thermal runaway
  • A molding process method and product for the upper cover of a composite material battery box for preventing thermal runaway

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Experimental program
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Embodiment 1

[0061] Such as Figure 1-4 As shown, a thermal runaway prevention composite material battery box cover, including mica paper layer 1, first composite material layer 2, second composite material layer 3, third composite material layer 4, fourth composite material layer laid in sequence from bottom to top Composite material layer 5, fifth composite material layer 6, sixth composite material layer 7, seventh composite material layer 8 and eighth composite material layer 9, the thickness of each layer after molding is 0.3mm, and the thickness of each layer before molding is 0.4mm, the total product thickness is 2.4±0.2mm, the local thickness of the top surface is 2.7±0.2mm, the first composite material layer 2 is a composite material layer with a mica mass fraction of 10%, and the second composite material layer 3 is a mica mass fraction 80% composite material layer, the third composite material layer 4 is a composite material layer with a mica mass fraction of 80%, the fourth com...

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Abstract

The invention discloses a forming process method of a thermal runaway prevention composite material battery box upper cover and a product. The composite material comprises a mica paper layer, a firstcomposite material layer, a second composite material layer, a third composite material layer, a fourth composite material layer, a fifth composite material layer, a sixth composite material layer, aseventh composite material layer and an eighth composite material layer which are sequentially laid from bottom to top. According to the molding process method of the thermal runaway prevention composite material battery box upper cover and the product provided by the invention, different thermal runaway requirements can be met, flexible design, different thermal runaway temperatures, corresponding changes of the mica powder content and layer number of the layers and the layer sequence are realized, the preparation procedures of parts can be reduced, the assembly number of the parts is reduced, the production cost is reduced, by combining the high-strength advantage of the continuous fibers and the heat resistance of the mica material, the thermal runaway prevention capacity of the composite material battery box upper cover is improved, the manufacturing cost is reduced, the space of the battery pack is not occupied, open fire is prevented from overflowing, and the safety of the electric automobile is improved.

Description

technical field [0001] The invention belongs to the technical field of battery box top cover preparation, and in particular relates to a forming process and product of a thermal runaway prevention composite material battery box top cover. Background technique [0002] Composite materials have high specific modulus and specific strength, and at the same time, the design and manufacture of composite material structures can be integrated. Recently, composite materials have become the first choice for lightweight new energy electric vehicles. As the core technology of new energy electric vehicles, new energy battery packs are the key to restricting the development and promotion of new energy electric vehicles, and the safety of electric vehicles is also a key indicator for the full introduction of electric vehicles to the market. [0003] The use of continuous fiber-reinforced resin-based composites to manufacture the upper cover of electric vehicles is one of the most potential...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/30B29C70/54H01M2/10
CPCB29C70/30B29C70/54B29L2031/7146H01M50/20Y02E60/10
Inventor 董晓阳唐昌伟龚建峰吴国庆曹正宁
Owner 溧阳康本复合材料有限公司
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