Battery composite protected electric vehicle

Abstract

The present application relates to electric vehicle technical field, especially battery composite material protection electric vehicle, overcome the existing electric vehicle to the battery protection unreliable defects, the battery of electric vehicle is arranged on the vehicle chassis, the electric vehicle has the battery protection plate below the battery, the battery protection plate is detachably fixed on the chassis, the battery protection plate has the protection part of flat plate, the protection part is formed by high polymer material wrapping the three-dimensional mesh fabric of the middle layer, the upper carbon fiber fabric of the upper layer and the lower carbon fiber fabric of the lower layer, and the three-dimensional mesh fabric has the upper fabric organization, the lower fabric organization and the support fabric organization for spacing and supporting the upper and lower fabric organizations, the battery protection plate has the fixed part for being fixed with the chassis at the outer circle of the protection part, the fixed part is formed by high polymer material wrapping the upper carbon fiber fabric and the lower carbon fiber fabric extending from the protection part after curing, and the high polymer material on the fixed part is integrated with the high polymer material on the protection part.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle technology, and in particular to an electric vehicle protected by a battery composite material. Background Technology

[0002] Batteries are the main power source of electric vehicles. Regardless of the type of battery used, electric vehicles fix numerous individual battery cells in a matrix arrangement on the vehicle chassis. In order to reduce weight and save energy, the structure on the chassis that supports the battery is a frame structure. The battery can be seen to have exposed parts from the bottom of the vehicle. Thus, stones or foreign objects flying up when the vehicle is driving can damage the battery, or road bumps can also damage the battery. Battery damage can lead to serious accidents such as fires.

[0003] Therefore, existing electric vehicle manufacturers or dealers will install battery protection plates under the vehicle or place the battery on a tray, which is then placed on the chassis. These trays or protection plates are formed from steel or alloy plates with a thickness of 1 to 3 millimeters. The forming process mainly involves forming reinforcing ribs on the load-bearing surface to increase rigidity and strength. These trays or protection plates can withstand the impact of some small objects, but when a large object impacts or collides, it will form an inward protrusion in the protection plate. This protrusion will come into contact with the battery and cause continuous impact and wear to the battery while the vehicle is in motion, which will cause another kind of damage to the battery. In addition, the insulation and corrosion resistance of this type of metal protection plate will also have an adverse effect on the vehicle's performance and its own lifespan. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an electric vehicle with battery composite material protection, overcoming the defect of unreliable battery protection in existing electric vehicles.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an electric vehicle with battery composite material protection, having a battery installed on the vehicle chassis, the battery being composed of a matrix of several battery cells, the electric vehicle having a battery protection plate located below the battery, the battery protection plate being detachably fixed to the chassis, the battery protection plate having a flat protective part, the protective part being formed by curing a three-dimensional mesh fabric in the middle layer, an upper carbon fiber fabric, and a lower carbon fiber fabric wrapped with a polymer material, the three-dimensional mesh fabric having an upper fabric structure, a lower fabric structure, and a supporting fabric structure that spaced and supported the upper and lower fabric structures.

[0006] Specifically, the battery protection plate has a fixing part located on the outer ring of the protection part for fixing to the chassis. The fixing part is formed by curing an upper carbon fiber fabric and a lower carbon fiber fabric extending from the protection part with a polymer material. The polymer material on the fixing part is integrated with the polymer material on the protection part.

[0007] Specifically, the protective part is recessed into the fixing part.

[0008] Specifically, the polymer material includes epoxy resin.

[0009] Specifically, an additional layer of carbon fiber fabric extending into the fixing part is provided at the edge of the protective part.

[0010] Specifically, the protective part is provided with water-permeable holes.

[0011] The beneficial effects of this invention are: the battery protection plate is composed of internal 3D fabric, surface reinforced carbon fiber fabric and polymer materials. The weight of the 5 mm thick composite material protection plate is only equivalent to that of a 1 mm thick steel plate, but the impact strength is increased by 3 to 5 times. Therefore, without increasing the weight, the protection plate has high rigidity and strength. The electric vehicle of this invention effectively protects the battery by using the composite material protection plate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention;

[0013] Figure 2 This is a perspective view of the battery protection plate in this invention;

[0014] Figure 3 This is a cross-sectional view of the battery protection plate in this invention;

[0015] Figure 4 yes Figure 3 Enlarged view of point A;

[0016] Figure 5 yes Figure 3 Enlarged view of point B;

[0017] Figure 6 This is a schematic diagram of the three-dimensional mesh fabric structure inside the battery protection plate in this invention.

[0018] In the picture: 1. Battery;

[0019] 2. Battery protection plate, 2-1. Fixing part, 2-2. Protection part, 2-3. Three-dimensional mesh fabric, 2-3-1. Upper fabric structure, 2-3-2. Lower fabric structure, 2-3-3. Supporting fabric structure, 2-4. Upper carbon fiber fabric, 2-5. Lower carbon fiber fabric, 2-6. Addition layer carbon fiber fabric, 2-7. Water permeable hole. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] like Figure 1 An electric vehicle with battery composite material protection includes a battery 1 mounted on the vehicle chassis. The battery 1 is composed of a matrix of several battery cells. The electric vehicle has a battery protection plate 2 located below the battery 1. The battery protection plate 2 is detachably fixed to the chassis, as shown in the attached diagram. Figure 2 The battery protection plate 2 has an outer ring with a fixing part 2-1 for fixing to the chassis and a protective part 2-2 inside the outer ring; as shown in the attached... Figures 3 to 5 As shown, the protective part 2-2 is formed by curing a polymer material wrapped around a three-dimensional mesh fabric 2-3 in the middle layer, an upper carbon fiber fabric 2-4 in the upper layer, and a lower carbon fiber fabric 2-5 in the lower layer. The fixing part 2-1 is formed by curing a polymer material wrapped around an upper carbon fiber fabric 2-4 and a lower carbon fiber fabric 2-5 extending from the protective part 2-2. The polymer material on the fixing part 2-1 is integrated with the polymer material on the protective part 2-2.

[0022] As attached Figure 6 As shown, the three-dimensional mesh fabric 2-3 has an upper fabric structure 2-3-1, a lower fabric structure 2-3-2, and a support fabric structure 2-3-3 that spaced out and supported the upper and lower fabric structures.

[0023] In addition, the protective part 2-2 is flat and recessed into the fixing part 2-1; the polymer material includes epoxy resin; a layered carbon fiber fabric 2-6 extending into the fixing part 2-1 is also provided at the edge of the protective part 2-2; and water-permeable holes 2-7 are provided on the protective part 2-2.

[0024] In this invention, the upper carbon fiber fabric 2-4 and the lower carbon fiber fabric 2-5 inside the protective plate can each be used as one layer or multiple layers;

[0025] In this invention, the protective plate is formed by applying the constituent substances and various constituent structures into a mold and then curing it.

[0026] In this invention, the protective plate can also be used as a battery tray.

[0027] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An electric vehicle with battery composite material protection, comprising a battery mounted on a vehicle chassis, the battery being composed of a matrix of several battery cells, the electric vehicle having a battery protection plate located below the battery, the battery protection plate being detachably fixed to the chassis, characterized in that: The battery protective plate has a flat protective part, which is formed by curing a three-dimensional mesh fabric in the middle layer, an upper carbon fiber fabric in the upper layer, and a lower carbon fiber fabric in the lower layer wrapped with a polymer material. The three-dimensional mesh fabric has an upper fabric structure, a lower fabric structure, and a supporting fabric structure that spacers and supports the upper and lower fabric structures. The battery protective plate has a fixing part located on the outer ring of the protective part for fixing to the chassis. The fixing part is formed by curing an upper carbon fiber fabric and a lower carbon fiber fabric extending from the protective part wrapped with a polymer material. The polymer material on the fixing part is integrated with the polymer material on the protective part. An additional layer of carbon fiber fabric extending into the fixing part is also provided at the edge of the protective part. The protective part is recessed into the fixing part.

2. The electric vehicle protected by the battery composite material according to claim 1, characterized in that: The polymer material includes epoxy resin.

3. The electric vehicle protected by the battery composite material according to claim 1, characterized in that: The protective part is provided with water-permeable holes.

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