Protective plate and vehicle

Abstract

The present application discloses a protective plate, comprising: a metal plate; a glass fiber reinforced resin layer, the glass fiber reinforced resin layer comprising a first glass fiber reinforced resin layer and a second glass fiber reinforced resin layer, the first glass fiber reinforced resin layer being located on one side of the metal plate, and the second glass fiber reinforced resin layer being located on a side of the metal plate away from the first glass fiber reinforced resin layer; a carbon fiber reinforced resin layer, the carbon fiber reinforced resin layer comprising a first carbon fiber reinforced resin layer and a second carbon fiber reinforced resin layer, the first carbon fiber reinforced resin layer being located on a side of the first glass fiber reinforced resin layer away from the metal plate, and the second carbon fiber reinforced resin layer being located on a side of the second glass fiber reinforced resin layer away from the metal plate; the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer sealing the metal plate; the metal plate, the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer satisfying the following conditions:

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a protective plate and a vehicle. Background Art

[0002] The batteries of new energy vehicles are typically located under the vehicle, effectively saving interior space and protecting the battery in the event of a head-on collision. However, the underside of new energy vehicles is subject to complex driving conditions, such as when passing over potholes, bumps, or rocky surfaces. This poses a significant safety risk to new energy vehicles.

[0003] Currently, underbody guards for new energy vehicles are typically made of steel to ensure strength and impact resistance. At the same time, an anti-corrosion coating is applied to the steel surface through electrophoresis or spraying to prevent corrosion. However, existing underbody guards are heavy and lack scratch resistance, which can easily lead to corrosion failure. The overall protective effect of the guard needs to be improved. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the above-mentioned prior art. To this end, one purpose of the present application is to provide a protective plate that has the advantages of light weight, high strength, strong anti-scratch ability, and good overall protective performance.

[0005] A first aspect of the present application provides a protective plate, comprising: a metal plate; a glass fiber reinforced resin layer, the glass fiber reinforced resin layer comprising a first glass fiber reinforced resin layer and a second glass fiber reinforced resin layer, the first glass fiber reinforced resin layer being located on one side of the metal plate, and the second glass fiber reinforced resin layer being located on a side of the metal plate away from the first glass fiber reinforced resin layer; a carbon fiber reinforced resin layer, the carbon fiber reinforced resin layer comprising a first carbon fiber reinforced resin layer and a second carbon fiber reinforced resin layer, the first carbon fiber reinforced resin layer being located on a side of the first glass fiber reinforced resin layer away from the metal plate, and the second carbon fiber reinforced resin layer being located on a side of the second glass fiber reinforced resin layer away from the metal plate; the glass fiber reinforced resin layer and / or the carbon fiber reinforced resin layer sealing the metal plate; the metal plate, the glass fiber reinforced resin layer, and the carbon fiber reinforced resin layer satisfy the following conditions:

[0006]

[0007] Where d0 is the thickness of the glass fiber reinforced resin layer, in mm; d1 is the thickness of the carbon fiber reinforced resin layer, in mm; d2 is the thickness of the metal plate, in mm; ρ0 is the density of the glass fiber reinforced resin layer, in g / cm3 ; ρ1 is the density of the carbon fiber reinforced resin layer, in g / cm 3 ; ρ2 is the density of the metal plate, in g / cm 3 ; σ0 is the tensile strength of the glass fiber reinforced resin layer, in MPa; σ1 is the tensile strength of the carbon fiber reinforced resin layer, in MPa; σ2 is the tensile strength of the metal plate, in MPa.

[0008] In some embodiments of the present application,

[0009] In some embodiments of the present application, the thickness d0 mm of the glass fiber reinforced resin layer is 1.0 mm-2.0 mm, and the density of the glass fiber reinforced resin layer is p0 g / cm 3 -1.5g / cm 3 -1.9g / cm 3 The tensile strength σ0MPa of the glass fiber reinforced resin layer is 280MPa-380MPa.

[0010] In some embodiments of the present application, the thickness d1 mm of the carbon fiber reinforced resin layer is 1.0 mm-2.0 mm, and the density of the carbon fiber reinforced resin layer is p1 g / cm 3 1.2g / cm 3 -1.5g / cm 3 The tensile strength σ1MPa of the carbon fiber reinforced resin layer is 760MPa-860MPa.

[0011] In some embodiments of the present application, the thickness d2 mm of the metal plate is 0.5 mm-1.5 mm, and the density of the metal plate is ρ2 g / cm 3 -7.8g / cm 3 -8.7g / cm 3 , the tensile strength σ2MPa of the metal plate is 590MPa-1180MPa.

[0012] In some embodiments of the present application, the protective plate also includes: a fiber-reinforced resin frame; the fiber-reinforced resin frame is located between the first glass fiber-reinforced resin layer and the second glass fiber-reinforced resin layer, the metal plate is located inside the fiber-reinforced resin frame, the top surface of the fiber-reinforced resin frame is integrally connected to the first glass fiber-reinforced resin layer, and the bottom surface of the fiber-reinforced resin frame is integrally connected to the second glass fiber-reinforced resin layer; or, the fiber-reinforced resin frame is located between the first carbon fiber-reinforced resin layer and the second carbon fiber-reinforced resin layer, the metal plate is located inside the fiber-reinforced resin frame, the top surface of the fiber-reinforced resin frame is integrally connected to the first carbon fiber-reinforced resin layer, and the bottom surface of the fiber-reinforced resin frame is integrally connected to the second carbon fiber-reinforced resin layer.

[0013] In some embodiments of the present application, the thickness of the glass fiber reinforced resin layer is the same as the thickness of the carbon fiber reinforced resin layer.

[0014] In some embodiments of the present application, the thickness of the first glass fiber reinforced resin layer is the same as the thickness of the second glass fiber reinforced resin layer; the thickness of the first carbon fiber reinforced resin layer is the same as the thickness of the second carbon fiber reinforced resin layer.

[0015] In some embodiments of the present application, the thickness of the first glass fiber reinforced resin layer, the thickness of the second glass fiber reinforced resin layer, the thickness of the first carbon fiber reinforced resin layer, and the thickness of the second carbon fiber reinforced resin layer are all the same.

[0016] A second aspect of the present application provides a vehicle comprising a battery pack and the aforementioned protective plate, wherein the protective plate is disposed below the battery pack.

[0017] In some embodiments of the present application, a buffer zone is provided between the battery pack and the protective plate.

[0018] In some embodiments of the present application, the buffer zone is filled with a buffer layer, and the buffer layer is selected from a honeycomb material or a hard foam material.

[0019] The protective base plate provided by the present application seals the metal plate by a glass fiber reinforced resin layer and / or a carbon fiber reinforced resin layer, which can effectively protect the metal plate and prevent the metal plate from being corroded by external factors such as water vapor, thereby avoiding the problem of corrosion failure of the protective plate. The glass fiber reinforced resin layer and the carbon fiber reinforced resin layer both have the characteristics of high hardness. Using them as the protective layer of the protective plate can significantly improve the anti-scratch ability of the protective plate. Moreover, by forming a composite structure with the glass fiber reinforced resin layer, the carbon fiber reinforced resin layer and the metal plate, not only the strength and impact resistance of the protective plate can be improved, but also the lightweight of the protective plate can be achieved. At the same time, the present solution arranges the glass fiber reinforced resin layer on the outside of the metal plate and the carbon fiber reinforced resin layer on the outside of the glass fiber reinforced resin layer, that is, the glass fiber reinforced resin layer with good toughness serves as the inner protective layer of the protective plate, and the carbon fiber reinforced resin layer with strong rigidity serves as the outer protective layer of the protective plate, which can further improve the overall strength of the protective plate, so that the protective plate has an excellent protective effect.

[0020] Furthermore, the thickness of the glass fiber reinforced resin layer is d0 mm, the thickness of the carbon fiber reinforced resin layer is d1 mm, the thickness of the metal plate is d2 mm, and the density of the glass fiber reinforced resin layer is ρ0 g / cm 3 , the density of the carbon fiber reinforced resin layer ρ1g / cm 3 、The density of the metal plate is ρ2g / cm 3 , the tensile strength of the glass fiber reinforced resin layer σ0MPa, the density of the carbon fiber reinforced resin layer σ1MPa and the density of the metal plate σ2MPa meet It can improve the bearing capacity of the protective plate, which is beneficial to ensure that the glass fiber reinforced resin layer and carbon fiber reinforced resin layer of the protective plate are not damaged when the protective plate is subjected to a certain energy impact, thereby ensuring the use effect of the protective plate in long-term impact conditions.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is an exploded view of a protective plate according to an embodiment of the present application;

[0024] Figure 2 It is a schematic diagram of a partial structure of a vehicle according to an embodiment of the present application.

[0025] Reference numerals:

[0026] Protective plate 1; metal plate 10; glass fiber reinforced resin layer 20, first glass fiber reinforced resin layer 201, second glass fiber reinforced resin layer 202; carbon fiber reinforced resin layer 30, first carbon fiber reinforced resin layer 301; second carbon fiber reinforced resin layer 302; fiber reinforced resin frame 40; battery pack 2. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary. In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present application.

[0028] The protective plate 1 according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0029] like Figure 1-2 As shown, the protective plate 1 includes: a metal plate 10, a glass fiber reinforced resin layer 20, and a carbon fiber reinforced resin layer 30. The glass fiber reinforced resin layer 20 and / or the carbon fiber reinforced resin layer 30 seals the metal plate 10. The glass fiber reinforced resin layer 20 includes a first glass fiber reinforced resin layer 201 and a second glass fiber reinforced resin layer 202. The first glass fiber reinforced resin layer 201 is located on one side of the metal plate 10, and the second glass fiber reinforced resin layer 202 is located on the side of the metal plate 10 away from the first glass fiber reinforced resin layer 201. The carbon fiber reinforced resin layer 30 includes a first carbon fiber reinforced resin layer 301 and a second carbon fiber reinforced resin layer 302. The first carbon fiber reinforced resin layer 301 is located on the side of the first glass fiber reinforced resin layer 201 away from the metal plate 10, and the second carbon fiber reinforced resin layer 302 is located on the side of the second glass fiber reinforced resin layer 202 away from the metal plate 10. The metal plate 10, the glass fiber reinforced resin layer 20, and the carbon fiber reinforced resin layer 30 meet the following conditions:

[0030]

[0031] Where d0 is the thickness of the glass fiber reinforced resin layer, in mm; d1 is the thickness of the carbon fiber reinforced resin layer, in mm; d2 is the thickness of the metal plate, in mm; ρ0 is the density of the glass fiber reinforced resin layer, in g / cm 3 ; ρ1 is the density of the carbon fiber reinforced resin layer, in g / cm 3 ; ρ2 is the density of the metal plate, in g / cm3 ; σ0 is the tensile strength of the glass fiber reinforced resin layer, in MPa; σ1 is the tensile strength of the carbon fiber reinforced resin layer, in MPa; σ2 is the tensile strength of the metal plate, in MPa.

[0032] Sealing the metal plate 10 with the glass fiber reinforced resin layer 20 and the carbon fiber reinforced resin layer 30 effectively protects the metal plate 10 from corrosion caused by external factors such as moisture, thereby preventing the corrosion failure of the protective plate 1. Both the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer have high hardness. Using them as protective layers for the protective plate 1 significantly improves the anti-scratch capability of the protective plate 1. Furthermore, the composite structure formed by the glass fiber reinforced resin layer 20, the carbon fiber reinforced resin layer 30, and the metal plate 10 not only improves the strength and impact resistance of the protective plate 1, but also achieves lightweighting of the protective plate 1. Furthermore, this solution arranges the glass fiber reinforced resin layer 20 on the outside of the metal plate 10 and the carbon fiber reinforced resin layer 30 on the outside of the glass fiber reinforced resin layer 20. This means that the tough glass fiber reinforced resin layer 3 serves as the inner protective layer of the protective plate 1, while the rigid carbon fiber reinforced resin layer 30 serves as the outer protective layer of the protective plate 1. This further enhances the overall strength of the protective plate 1, providing the protective plate 1 with excellent protective effectiveness.

[0033] Furthermore, the thickness of the glass fiber reinforced resin layer 20 is d0 mm, the thickness of the carbon fiber reinforced resin layer 30 is d1 mm, the thickness of the metal plate 10 is d2 mm, and the density of the glass fiber reinforced resin layer 20 is p0 g / cm 3 , the density of the carbon fiber reinforced resin layer 30 is ρ1g / cm 3 , the density of the metal plate 10 is ρ2g / cm 3 , the tensile strength σ0MPa of the glass fiber reinforced resin layer 20, the density σ1MPa of the carbon fiber reinforced resin layer 30 and the density σ2MPa of the metal plate 10 satisfy When the protective plate 1 is subjected to a certain energy impact, the bearing capacity of the protective plate 1 can be improved, which is beneficial to ensure that the glass fiber reinforced resin layer 20 and the carbon fiber reinforced resin layer 30 are not damaged, thereby ensuring the use effect of the protective plate 1 in long-term impact conditions.

[0034] In some embodiments of the present application, the glass fiber reinforced resin layer 20 and the carbon fiber reinforced resin layer 30 seal the metal plate 10, and the sealing connection can be achieved by the first glass fiber reinforced resin layer 201 and the second glass fiber reinforced resin layer 202 in the glass fiber reinforced resin layer 20, or by the first carbon fiber reinforced resin layer 301 and the second carbon fiber reinforced resin layer 302 in the carbon fiber reinforced resin layer 30. Thus, the sealing connection of the first glass fiber reinforced resin layer 201 and the second glass fiber reinforced resin layer 202 using the same material, or the sealing connection of the first carbon fiber reinforced resin layer 301 and the second carbon fiber reinforced resin layer 302 using the same material, is conducive to improving the bonding force between the fiber reinforced resin layers of the protective plate 1, thereby improving the overall strength of the protective plate 1.

[0035] In some embodiments of the present application, By defining the above relationship, the influence of the material selection of the metal plate 10, the glass fiber reinforced resin layer 20 and the carbon fiber reinforced resin layer 30 on the impact resistance of the protective plate 1 can be comprehensively considered, thereby improving the strength, impact resistance and long-term service life of the protective plate 1.

[0036] In the present application, the thickness d0 mm of the glass fiber reinforced resin layer 20 is 1.0 mm to 2.0 mm. For example, the thickness of the glass fiber reinforced resin layer 20 can be 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.8 mm or 2.0 mm. The density of the glass fiber reinforced resin layer is p0 g / cm 3 1.5g / cm 3 -1.9g / cm 3 For example, the density of the glass fiber reinforced resin layer 20 can be 1.5 g / cm 3 , 1.6g / cm 3 , 1.7g / cm 3 , 1.8g / cm 3 or 1.9 g / cm 3 . The tensile strength σ0MPa of the glass fiber reinforced resin layer 20 is 280MPa-380MPa. For example, the tensile strength of the glass fiber reinforced resin layer 20 can be 280MPa, 290MPa, 300MPa, 310MPa, 320MPa, 330MPa, 340MPa, 350MPa, 360MPa, 370MPa or 380MPa. The glass fiber reinforced resin layer 20 has excellent properties such as high specific strength, high specific modulus, and corrosion resistance, and can provide good protection for the metal plate 10. The use of the glass fiber reinforced resin layer 20 within the above conditions can reduce weight while improving the protection effect on the metal plate 10, improving the impact resistance of the protective plate 1, and ensuring the long-term use effect of the protective plate.

[0037] In the present application, the thickness d1 mm of the carbon fiber reinforced resin layer 30 is 1.0 mm to 2.0 mm. For example, the thickness of the carbon fiber reinforced resin layer 30 can be 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.8 mm, or 2.0 mm. The density of the carbon fiber reinforced resin layer 30 is ρ1 g / cm 3 1.2g / cm 3 -1.5g / cm 3 For example, the density of the carbon fiber reinforced resin layer 30 can be 1.2 g / cm 3 , 1.3g / cm 3 , 1.4g / cm 3 or 1.5g / cm 3 . The tensile strength σ1MPa of the carbon fiber reinforced resin layer 30 is 760MPa-860MPa. For example, the tensile strength of the carbon fiber reinforced resin layer 30 may be 760MPa, 770MPa, 780MPa, 790MPa, 800MPa, 810MPa, 820MPa, 830MPa, 840MPa, 850MPa or 860MPa. Compared with the glass fiber reinforced resin layer, the carbon fiber reinforced resin layer 30 has a higher specific strength, a higher specific modulus, a lower density, a lighter weight, and excellent impact resistance, fatigue resistance and high temperature resistance. Using a carbon fiber reinforced resin layer within the above-mentioned conditions as the outer layer can not only fully protect the metal plate 10 from damage, effectively improve the strength of the protective plate 1, but also further reduce the weight of the protective plate 1, thereby achieving the purpose of further improving the lightweight effect of the protective plate 1.

[0038] In the present application, the thickness of the metal plate 10 may be 0.5 mm to 1.5 mm. For example, the thickness of the metal plate 10 may be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm. The density of the metal plate 10 is ρ2 g / cm 3 7.8g / cm 3 -8.7g / cm 3 For example, the density of the metal plate 10 may be 7.8 g / cm 3 , 8.0g / cm 3 、8.3g / cm 3 , 8.5g / cm 3 or 8.7g / cm 3The tensile strength σ1MPa of the metal plate 10 is 590MPa-1180MPa. For example, the tensile strength of the carbon fiber reinforced resin layer 30 can be 590MPa, 600MPa, 650MPa, 700MPa, 750MPa, 800MPa, 850MPa, 900MPa, 950MPa, 1000MPa, or 1180MPa. Using the metal plate 10 within the above conditions can not only ensure the mechanical strength of the protective plate 1 and improve the impact resistance, but also effectively control costs and contribute to the lightweighting of the vehicle.

[0039] In the present application, the protective plate 1 may further include a fiber-reinforced resin frame 40. In some embodiments of the present application, the fiber-reinforced resin frame 40 may be located between the first glass fiber-reinforced resin layer 201 and the second glass fiber-reinforced resin layer 202, with the metal plate 10 located within the fiber-reinforced resin frame 40. The first glass fiber-reinforced resin layer 201 and the second glass fiber-reinforced resin layer 202 are connected by the fiber-reinforced resin frame 40 to form a sealed space for accommodating the metal plate 10. The top surface of the fiber-reinforced resin frame 40 is integrally connected to the first glass fiber-reinforced resin layer 201, and the bottom surface of the fiber-reinforced resin frame 40 is integrally connected to the second glass fiber-reinforced resin layer 202.

[0040] It can be understood that the manner in which the fiber reinforced resin frame 40, the first glass fiber reinforced resin layer 201 and the second glass fiber reinforced resin layer 202 are sealed and connected to form a space for accommodating the metal plate 10 may include but is not limited to the following manners, such as: first, the fiber reinforced resin frame 40, the first glass fiber reinforced resin layer 201 and the second glass fiber reinforced resin layer 202 are independent of each other, and the three are sealed and connected by hot pressing; second, the fiber reinforced resin frame 40 and the first glass fiber reinforced resin layer 201 are integrally formed, and the integrally formed fiber reinforced resin frame 40 and the first glass fiber reinforced resin layer 202 are sealed and connected by hot pressing; The fiber-reinforced resin layer 201 is sealed and connected to the second glass-fiber-reinforced resin layer 202. In the third type, the fiber-reinforced resin frame 40 and the second glass-fiber-reinforced resin layer 202 are integrally formed, and the integrally formed fiber-reinforced resin frame 40 and the second glass-fiber-reinforced resin layer 202 are sealed and connected to the first glass-fiber-reinforced resin layer 201 by hot pressing. In the fourth type, a part of the fiber-reinforced resin frame 40 is integrally formed with the first glass-fiber-reinforced resin layer 201, and another part of the fiber-reinforced resin frame 40 is integrally formed with the second glass-fiber-reinforced resin layer 202, and the two are sealed by hot pressing.

[0041] In other embodiments of the present application, the fiber-reinforced resin frame 40 may be located between the first carbon fiber-reinforced resin layer 301 and the second carbon fiber-reinforced resin layer 302, the metal plate 10 is located inside the fiber-reinforced resin frame 40, and the first carbon fiber-reinforced resin layer 301 and the second carbon fiber-reinforced resin layer 302 are connected by the fiber-reinforced resin frame 40 to form a closed space for accommodating the metal plate 10. The top surface of the fiber-reinforced resin frame 40 is integrally connected to the first carbon fiber-reinforced resin layer 301, and the bottom surface of the fiber-reinforced resin frame 40 is integrally connected to the second carbon fiber-reinforced resin layer 302.

[0042] It can be understood that the manner in which the fiber reinforced resin frame 40, the first carbon fiber reinforced resin layer 301 and the second carbon fiber reinforced resin layer 302 are sealed and connected to form a space for accommodating the metal plate 10 may include but is not limited to the following manners, such as: first, the fiber reinforced resin frame 40, the first carbon fiber reinforced resin layer 301 and the second carbon fiber reinforced resin layer 302 are independent of each other, and the three are sealed and connected by hot pressing; second, the fiber reinforced resin frame 40 and the first carbon fiber reinforced resin layer 301 are integrally formed, and the integrally formed fiber reinforced resin frame 40 and the first carbon fiber reinforced resin layer 301 are sealed and connected to the second carbon fiber reinforced resin layer 302 by hot pressing; third, the fiber reinforced resin frame 40 and the second carbon fiber reinforced resin layer 302 are integrally formed, and the integrally formed fiber reinforced resin frame 40 and the second carbon fiber reinforced resin layer 302 are sealed and connected to the first carbon fiber reinforced resin layer 301 by hot pressing; fourth, a part of the fiber reinforced resin frame 40 is integrally formed with the first carbon fiber reinforced resin layer 301, and another part of the fiber reinforced resin frame 40 is integrally formed with the second carbon fiber reinforced resin layer 302, and the two are sealed by hot pressing.

[0043] In the present application, the fiber-reinforced resin frame 40 may be a glass fiber-reinforced resin frame or a carbon fiber-reinforced resin frame. When the fiber-reinforced resin frame 40 is a glass fiber-reinforced resin frame, at least one of the first glass fiber-reinforced resin layer 201 and the second glass fiber-reinforced resin layer 202 may be integrally formed with the glass fiber-reinforced resin frame. For example, the first glass fiber-reinforced resin layer 201 and the glass fiber-reinforced resin frame may be integrally formed, or the second glass fiber-reinforced resin layer 202 and the glass fiber-reinforced resin frame may be integrally formed, or the first glass fiber-reinforced resin layer 201 and a portion of the glass fiber-reinforced resin frame may be integrally formed, and the second glass fiber-reinforced resin layer 202 and another portion of the glass fiber-reinforced resin frame may be integrally formed. At this point, the fiber-reinforced resin frame 40, the first glass fiber-reinforced resin layer 201, and the second glass fiber-reinforced resin layer 202 are made of the same material, which is beneficial to improving the overall strength of the protective plate.

[0044] When the fiber-reinforced resin frame 40 is a carbon fiber-reinforced resin frame, at least one of the first carbon fiber-reinforced resin layer 301 and the second carbon fiber-reinforced resin layer 302 can be integrally formed with the carbon fiber-reinforced resin frame. For example, the first carbon fiber-reinforced resin layer 301 and the carbon fiber-reinforced resin frame can be integrally formed, the second carbon fiber-reinforced resin layer 302 and the carbon fiber-reinforced resin frame can be integrally formed, or the first carbon fiber-reinforced resin layer 301 and a portion of the carbon fiber-reinforced resin frame can be integrally formed, and the second carbon fiber-reinforced resin layer 302 and another portion of the carbon fiber-reinforced resin frame can be integrally formed. In this case, the fiber-reinforced resin frame 40, the first carbon fiber-reinforced resin layer 301, and the second carbon fiber-reinforced resin layer 302 are made of the same material, which helps to improve the overall strength of the protective plate.

[0045] In the present application, the thickness of the glass fiber reinforced resin layer 20 is the same as the thickness of the carbon fiber reinforced resin layer 30. Thus, the overall strength of the protective plate 1 can be further improved, so that it has excellent impact resistance.

[0046] In this application, the thickness of the first glass fiber reinforced resin layer 201 is the same as that of the second glass fiber reinforced resin layer 202; and the thickness of the first carbon fiber reinforced resin layer 301 is the same as that of the second carbon fiber reinforced resin layer 301. In other words, the first glass fiber reinforced resin layer 201 and the second glass fiber reinforced resin layer 202, serving as the inner protective layer, are symmetrically arranged relative to the metal plate 10, while the first carbon fiber reinforced resin layer 301 and the second carbon fiber reinforced resin layer 302, serving as the outer protective layer, are symmetrically arranged relative to the metal plate 10. This arrangement further enhances the toughness of the glass fiber reinforced resin layer 20 and the high modulus of the carbon fiber reinforced resin layer 30, thereby improving the protective effect of the protective plate 1.

[0047] In the present application, the thickness of the first glass fiber reinforced resin layer 201, the thickness of the second glass fiber reinforced resin layer 202, the thickness of the first carbon fiber reinforced resin layer 301, and the thickness of the second carbon fiber reinforced resin layer 302 are all the same. As a result, the composite structure formed by the glass fiber reinforced resin layer, the carbon fiber reinforced resin layer, and the metal plate is stronger, and can effectively cushion the protective plate 1 when it is subjected to energy impact, thereby improving the energy absorption capacity of the protective plate 1 and providing excellent protective effect.

[0048] The second aspect of the present application provides a vehicle, comprising a battery pack 2 and the aforementioned protective plate 1, wherein the protective plate 1 is disposed below the battery pack 2. The vehicle has all the features and advantages of the aforementioned protective plate 1, which will not be described in detail here.

[0049] In this application, a buffer zone can be provided between the battery pack 2 and the protective plate 1. By providing a buffer zone, when the protective plate 1 is subjected to energy impact, the force of the battery pack 2 can be effectively buffered and protected, which is beneficial to improving the protective effect of the protective plate 1.

[0050] In this application, the buffer zone may be filled with a buffer layer, which may be made of a honeycomb material or a rigid foam material. The honeycomb material or the rigid foam material can absorb some of the energy of the external impact, thereby improving the compressive deformation resistance of the protective plate 1 and further protecting the battery pack 2.

[0051] In some embodiments of the present application, the honeycomb material can be selected from PP honeycomb material or aluminum honeycomb material; the rigid foam material can be selected from PU rigid foam material, PET rigid foam material, PMI rigid foam material, PVC rigid foam material, PET rigid foam material, MPP rigid foam material, PLA rigid foam material, PI rigid foam material or EPTU foam material.

[0052] In the present application, the second glass fiber reinforced resin layer 202 can be located on the side of the metal plate 10 facing away from the battery pack 2, and the thickness of the second glass fiber reinforced resin layer 202 is greater than the thickness of the first glass fiber reinforced resin layer 201. When the second glass fiber reinforced resin layer 202 is located on the side of the metal plate 10 facing away from the battery pack 2, the second glass fiber reinforced resin layer 202 is closer to the ground relative to the first glass fiber reinforced resin layer 201. In this case, by controlling the thickness of the second glass fiber reinforced resin layer 202 to be greater than the thickness of the first glass fiber reinforced resin layer 201, the impact resistance of the bottom of the protective plate 1 can be further improved, and the protective plate 1 can also be more resistant to scratches.

[0053] In this application, the second carbon fiber reinforced resin layer 302 is located on the side of the metal plate 10 facing away from the battery pack 2, and the thickness of the second carbon fiber reinforced resin layer 302 is greater than the thickness of the first carbon fiber reinforced resin layer 301. When the second carbon fiber reinforced resin layer 302 is located on the side of the metal plate 10 facing away from the battery pack 2, the second carbon fiber reinforced resin layer 302 is closer to the ground relative to the first carbon fiber reinforced resin layer 301. In this case, by controlling the thickness of the second carbon fiber reinforced resin layer 302 to be greater than the thickness of the first carbon fiber reinforced resin layer 301, the impact resistance of the bottom of the protective plate 1 can be further improved, and the protective plate 1 can also be more resistant to scratches.

[0054] The present application is further described below through examples.

[0055] Example 1

[0056] This embodiment is used to illustrate the protective plate disclosed in the present application, which includes a metal plate, a glass fiber reinforced resin layer and a carbon fiber reinforced resin layer. The glass fiber reinforced resin layer includes a first glass fiber reinforced resin layer and a second glass fiber reinforced resin layer. The first glass fiber reinforced resin layer is located on one side of the metal plate, and the second glass fiber reinforced resin layer is located on the side of the metal plate away from the first glass fiber reinforced resin layer. The carbon fiber reinforced resin layer includes a first carbon fiber reinforced resin layer and a second carbon fiber reinforced resin layer. The first carbon fiber reinforced resin layer is located on the side of the first glass fiber reinforced resin layer away from the metal plate, and the second carbon fiber reinforced resin layer is located on the side of the second glass fiber reinforced resin layer away from the metal plate. The metal plate is accommodated in a closed space formed by the connection of the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer. Among them, the thickness of the glass fiber reinforced resin layer is d0 mm, the thickness of the carbon fiber reinforced resin layer is d1 mm, the thickness of the metal plate is d2 mm, and the density of the glass fiber reinforced resin layer is ρ0 g / cm 3 , the density of the carbon fiber reinforced resin layer is ρ1g / cm 3 、The density of the metal plate is ρ2g / cm 3 , the tensile strength of the glass fiber reinforced resin layer is σ0 MPa, the density of the carbon fiber reinforced resin layer is σ1 MPa, and the density of the metal plate is σ2 MPa.

[0057] Example 2-48

[0058] Examples 2-48 are used to illustrate the protective plate disclosed in this application, including most of the structures in Example 1, with the difference being that the metal plate, glass fiber reinforced resin layer and carbon fiber reinforced resin layer provided in Examples 2 to 48 in Table 1 are used.

[0059] Comparative Examples 1-4

[0060] Examples 1-4 are used to illustrate the protective plate disclosed in this application, including most of the structures in Example 1, with the difference being that the metal plate, glass fiber reinforced resin layer and carbon fiber reinforced resin layer provided in Examples 1-4 in Table 1 are used.

[0061] Table 1

[0062]

[0063]

[0064]

[0065] Remark:

[0066] Performance Testing

[0067] The protective plates provided in the above embodiments and comparative examples were subjected to the following performance tests, and the test results are recorded in Table 2.

[0068] A 25mm diameter, 10kg sphere was used as an impact point to impact the protective plate, simulating the condition of a foreign object impacting the plate. Five impact points were selected, including the center point of the battery protective base plate and four points around the center point. (The height of the sphere can be adjusted to provide different impact energies.) The amount of concave deformation of the protective plate at each impact point was measured, and the point with the greatest concave deformation was selected and recorded as the protective plate's concave deformation.

[0069] Table 2

[0070]

[0071]

[0072] From the test results in Table 2, it can be seen that the protective plate of the present application meets the requirements of the thickness of the glass fiber reinforced resin layer d0 mm, the thickness of the carbon fiber reinforced resin layer d1 mm, the thickness of the metal plate d2 mm, the density of the glass fiber reinforced resin layer ρ0 g / cm 3 , the density of the carbon fiber reinforced resin layer ρ1g / cm 3 、The density of the metal plate is ρ2g / cm 3 , the tensile strength of the glass fiber reinforced resin layer σ0MPa, the density of the carbon fiber reinforced resin layer σ1MPa and the density of the metal plate σ2MPa meet When the material is light, it is beneficial to obtain a protective plate with high strength, strong anti-scratch ability and excellent impact resistance.

[0073] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some implementations" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0074] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A protective plate, characterized in that: include: Metal sheets; a glass fiber reinforced resin layer, the glass fiber reinforced resin layer comprising a first glass fiber reinforced resin layer and a second glass fiber reinforced resin layer, the first glass fiber reinforced resin layer being located on one side of the metal plate, and the second glass fiber reinforced resin layer being located on a side of the metal plate facing away from the first glass fiber reinforced resin layer; a carbon fiber reinforced resin layer, the carbon fiber reinforced resin layer comprising a first carbon fiber reinforced resin layer and a second carbon fiber reinforced resin layer, the first carbon fiber reinforced resin layer being located on a side of the first glass fiber reinforced resin layer away from the metal plate, and the second carbon fiber reinforced resin layer being located on a side of the second glass fiber reinforced resin layer away from the metal plate; The glass fiber reinforced resin layer and / or the carbon fiber reinforced resin layer seals the metal plate; The metal plate, the glass fiber reinforced resin layer, and the carbon fiber reinforced resin layer meet the following conditions: Wherein, d0 is the thickness of the glass fiber reinforced resin layer, in mm; d1 is the thickness of the carbon fiber reinforced resin layer, in mm; d2 is the thickness of the metal plate, in mm; ρ0 is the density of the glass fiber reinforced resin layer, in g / cm 3 ; ρ1 is the density of the carbon fiber reinforced resin layer, in g / cm 3 ; ρ2 is the density of the metal plate, in g / cm 3 ; σ0 is the tensile strength of the glass fiber reinforced resin layer, in MPa; σ1 is the tensile strength of the carbon fiber reinforced resin layer, in MPa; σ2 is the tensile strength of the metal plate, in MPa.

2. The protective plate according to claim 1, characterized in that 3. The protective plate according to claim 1, characterized in that The thickness d0 mm of the glass fiber reinforced resin layer is 1.0-2.0 mm, and the density of the glass fiber reinforced resin layer is p0 g / cm 3 1.5g / cm 3 -1.9g / cm 3 The tensile strength σ0MPa of the glass fiber reinforced resin layer is 280MPa-380MPa.

4. The protective plate according to claim 1, wherein: The thickness d1 mm of the carbon fiber reinforced resin layer is 1.0 mm to 2.0 mm, and the density of the carbon fiber reinforced resin layer is ρ1 g / cm 3 1.2g / cm 3 -1.5g / cm 3 The tensile strength σ1MPa of the carbon fiber reinforced resin layer is 760MPa-860MPa.

5. The protective plate according to claim 1, characterized in that The thickness d2 mm of the metal plate is 0.5 mm-1.5 mm, and the density of the metal plate is ρ2 g / cm 3 7.8g / cm 3 -8.7g / cm 3 , the tensile strength σ2MPa of the metal plate is 590MPa-1180MPa.

6. The protective plate according to claim 1, characterized in that The protective plate further comprises: a fiber reinforced resin frame; The fiber-reinforced resin frame is located between the first glass-fiber-reinforced resin layer and the second glass-fiber-reinforced resin layer, the metal plate is located inside the fiber-reinforced resin frame, the top surface of the fiber-reinforced resin frame is integrally connected to the first glass-fiber-reinforced resin layer, and the bottom surface of the fiber-reinforced resin frame is integrally connected to the second glass-fiber-reinforced resin layer; or, The fiber-reinforced resin frame is located between the first carbon fiber-reinforced resin layer and the second carbon fiber-reinforced resin layer, the metal plate is located inside the fiber-reinforced resin frame, the top surface of the fiber-reinforced resin frame is integrally connected to the first carbon fiber-reinforced resin layer, and the bottom surface of the fiber-reinforced resin frame is integrally connected to the second carbon fiber-reinforced resin layer.

7. The protective plate according to claim 1, characterized in that The thickness of the glass fiber reinforced resin layer is the same as the thickness of the carbon fiber reinforced resin layer.

8. The protective plate according to claim 1, wherein: The thickness of the first glass fiber reinforced resin layer is the same as that of the second glass fiber reinforced resin layer; the thickness of the first carbon fiber reinforced resin layer is the same as that of the second carbon fiber reinforced resin layer.

9. The protective plate according to claim 7 or 8, characterized in that: The thickness of the first glass fiber reinforced resin layer, the thickness of the second glass fiber reinforced resin layer, the thickness of the first carbon fiber reinforced resin layer, and the thickness of the second carbon fiber reinforced resin layer are all the same.

10. A vehicle, characterized in that: The invention comprises a battery pack and a protective plate according to any one of claims 1 to 9, wherein the protective plate is arranged below the battery pack.

11. The vehicle according to claim 10, characterized in that A buffer zone is provided between the battery pack and the protective plate.

12. The vehicle according to claim 11, characterized in that The buffer zone is filled with a buffer layer, and the buffer layer is selected from honeycomb material or hard foam material.

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