Guard Plates and Vehicles

Abstract

The protective plate comprises a metal plate; a glass fiber reinforced resin layer, the glass fiber reinforced resin layer including 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 the metal plate side and the second glass fiber reinforced resin layer being located on the side of the metal plate away from the first glass fiber reinforced resin layer; and a carbon fiber reinforced resin layer, the carbon fiber reinforced resin layer including 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 the 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 the side of the second glass fiber reinforced resin layer away from the metal plate. The metal plate is sealed by the glass fiber reinforced resin layer and / or the carbon fiber reinforced resin layer. The metal plate, the glass fiber reinforced resin layer, and the carbon fiber reinforced resin layer satisfy the following condition: Formula (1) Meet TIFF2026501580000016.tif13150.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure claims priority to and the benefit of Chinese Patent Application No. 202211729452.4, entitled "Guard Plate and Vehicle," filed on December 30, 2022. The entire contents of the above disclosure are incorporated herein by reference.

[0002] Technical Field The present disclosure relates to the field of vehicle technology, and more particularly to a protective plate and a vehicle. [Background technology]

[0003] Generally, the battery of a new energy vehicle is located at the bottom of the vehicle. This effectively maximizes the interior space of the vehicle and protects the power battery when the electric vehicle is hit by a frontal collision. However, when a new energy vehicle is actually traveling, the working conditions at the bottom of the vehicle are complex. For example, when passing over potholes, bumps, or stone roads, the bottom of the vehicle is highly susceptible to impacts and scratches, which poses a serious hidden risk to the safety of the new energy vehicle.

[0004] Currently, steel plates are commonly used as protective plates for new energy vehicles to ensure the plate's strength and impact resistance. Furthermore, an anti-corrosion layer is formed on the surface of the steel plate by electrophoresis and spraying to prevent corrosion of the steel plate. Existing protective plates have problems such as heavy weight and poor scratch resistance, which easily lead to poor corrosion protection of the protective plate. It is necessary to improve the overall protective effect of the protective plate. Summary of the Invention [Means for solving the problem]

[0005] The present disclosure aims to solve at least one of the above-mentioned technical problems existing in the related art. Therefore, an object of the present disclosure is to provide a protective plate. The protective plate has the advantages of light weight, high strength, strong scratch resistance, and good overall protective performance.

[0006] According to a first aspect of the present disclosure, there is provided a protective plate comprising: a metal plate; a glass fiber reinforced resin layer, the glass fiber reinforced resin layer including 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 the metal plate side and the second glass fiber reinforced resin layer being located on the metal plate side away from the first glass fiber reinforced resin layer; and a carbon fiber reinforced resin layer, the carbon fiber reinforced resin layer including 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 the first glass fiber reinforced resin layer side away from the metal plate and the second carbon fiber reinforced resin layer being located on the second glass fiber reinforced resin layer side away from the metal plate. The metal plate is sealed by the glass fiber reinforced resin layer and / or the carbon fiber reinforced resin layer. The metal plate, the glass fiber reinforced resin layer, and the carbon fiber reinforced resin layer are configured to satisfy the following conditions:

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[0007] 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, expressed in g / cm 3 ρ2 is the density of the metal plate, and its unit is 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 disclosure,

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[0009] In some embodiments of the present disclosure, the thickness d0 mm of the glass fiber reinforced resin layer is 1.0 mm to 2.0 mm. The density ρ0 g / cm of the glass fiber reinforced resin layer is 3 is 1.5g / cm 3 ~1.9g / cm 3 The tensile strength σ0 MPa of the glass fiber reinforced resin layer is 280 MPa to 380 MPa.

[0010] In some embodiments of the present disclosure, the thickness d1mm of the carbon fiber reinforced resin layer is 1.0mm to 2.0mm. The density ρ1g / cm 3 is 1.2g / cm 3 ~1.5g / cm 3 The tensile strength σ1MPa of the carbon fiber reinforced resin layer is 760MPa to 860MPa.

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

[0012] In some embodiments of the present disclosure, the protective plate further includes a fiber-reinforced resin frame. The fiber-reinforced resin frame is located between a first glass fiber-reinforced resin layer and a second glass fiber-reinforced resin layer, and a 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. Alternatively, the fiber-reinforced resin frame is located between the first carbon fiber-reinforced resin layer and the second carbon fiber-reinforced resin layer, and 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 disclosure, 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 disclosure, the thickness of the first glass fiber reinforced resin layer is the same as the thickness of the second glass fiber reinforced resin layer, and 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 disclosure, 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 the same.

[0016] According to a second aspect of the present disclosure, there is provided a vehicle including a battery pack and the above-described protective plate, wherein the protective plate is disposed below the battery pack.

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

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

[0019] According to the protective plate provided by the present disclosure, the metal plate is sealed with a glass fiber reinforced resin layer and / or a carbon fiber reinforced resin layer, thereby effectively protecting the metal plate and preventing corrosion of the metal plate due to external factors such as water vapor, thereby avoiding the problem of poor corrosion protection of the protective plate. Furthermore, since both the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer are characterized by high hardness, using the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer as the protective layer of the protective plate can significantly improve the scratch resistance of the protective plate. Furthermore, forming a composite structure with the glass fiber reinforced resin layer, the carbon fiber reinforced resin layer, and the metal plate can improve the strength and impact resistance of the protective plate and reduce its weight. Furthermore, in this solution, a glass fiber reinforced resin layer is disposed on the outer side of the metal plate, and a carbon fiber reinforced resin layer is disposed on the outer side of the glass fiber reinforced resin layer. That is, a glass fiber reinforced resin layer with good toughness is used as the inner protective layer of the protective plate, and a carbon fiber reinforced resin layer with good rigidity is used as the outer protective layer of the protective plate. This can further improve the strength of the entire protection plate, and the protection effect of the protection plate is excellent.

[0020] In addition, 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 and the density of the carbon fiber reinforced resin layer ρ1g / cm 3 and the density of the metal plate ρ2g / cm 3 The tensile strength of the glass fiber reinforced resin layer is σ0 MPa, the tensile strength of the carbon fiber reinforced resin layer is σ1 MPa, and the tensile strength of the metal plate is σ2 MPa.

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[0021] Additional aspects and advantages of the disclosure will be set forth in the description that follows, and in part will be apparent from the description, or may be learned by practice of the disclosure.

[0022] The above and / or additional aspects and advantages of the present disclosure will become apparent and can be easily understood from the following description of the embodiments with reference to the accompanying drawings. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 2 is an exploded view of an apron according to one embodiment of the present disclosure. [Figure 2] 1 is a schematic diagram of a partial structure of a vehicle according to one embodiment of the present disclosure. [Explanation of symbols]

[0024] 1 protective plate; 10 metal plate; 20 glass fiber reinforced resin layer; 201 first glass fiber reinforced resin layer; 202 second glass fiber reinforced resin layer; 30 carbon fiber reinforced resin layer; 301 first carbon fiber reinforced resin layer; 302 second carbon fiber reinforced resin layer; 40 fiber reinforced resin frame; 2 battery pack. DETAILED DESCRIPTION OF THE INVENTION

[0025] The following describes embodiments of the present disclosure in detail, and the embodiments described with reference to the accompanying drawings are exemplary. In describing the present disclosure, it should be understood that orientations or positional relationships indicated by "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "periphery," etc. are based on the orientations or positional relationships shown in the accompanying drawings, are merely intended to facilitate and simplify the description of the present disclosure, and do not indicate or imply that the depicted devices or elements must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limitations on the present disclosure.

[0026] A protection plate 1 according to an embodiment of the present disclosure will now be described with reference to the drawings.

[0027] As shown in FIGS. 1 and 2 , 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 metal plate 10 is sealed by the glass fiber reinforced resin layer 20 and / or the carbon fiber reinforced resin layer 30. 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 the metal plate 10 side, 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 that is farther 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 that is farther from the metal plate 10. The metal plate 10, the glass fiber reinforced resin layer 20, and the carbon fiber reinforced resin layer 30 are

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[0028] 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, expressed in g / cm 3 ρ2 is the density of the metal plate, and its unit is 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.

[0029] The metal plate 10 is sealed with the glass fiber reinforced resin layer 20 and / or the carbon fiber reinforced resin layer 30. As a result, the metal plate 10 can be effectively protected and prevented from being corroded by external factors such as water vapor, thereby avoiding the problem of poor corrosion protection of the protective plate 1. Furthermore, since both the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer are characterized by high hardness, using a glass fiber reinforced resin layer and a carbon fiber reinforced resin layer as the protective layer of the protective plate 1 can significantly improve the scratch resistance of the protective plate 1. Furthermore, forming a composite structure with the glass fiber reinforced resin layer 20, the carbon fiber reinforced resin layer 30, and the metal plate 10 can improve the strength and impact resistance of the protective plate 1 and reduce its weight. Furthermore, in this solution, the glass fiber reinforced resin layer 20 is disposed on the outer side of the metal plate 10, and the carbon fiber reinforced resin layer 30 is disposed on the outer side of the glass fiber reinforced resin layer 20. That is, the glass fiber reinforced resin layer 20 having good toughness is used as the inner protective layer of the protective plate 1, and the carbon fiber reinforced resin layer 30 having good rigidity is used as the outer protective layer of the protective plate 1. This can further improve the strength of the entire protective plate 1, and the protective plate 1 has an excellent protective effect.

[0030] In addition, 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 ρ0 g / cm 3 and the density ρ of the carbon fiber reinforced resin layer 30 is ρ1g / cm 3 and the density ρ2g / cm of the metal plate 10 3 The tensile strength of the glass fiber reinforced resin layer 20 is σ0 MPa, the tensile strength of the carbon fiber reinforced resin layer 30 is σ1 MPa, and the tensile strength of the metal plate 10 is σ2 MPa.

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[0031] In some embodiments of the present disclosure, sealing of the metal plate 10 by the glass fiber reinforced resin layer 20 and / or the carbon fiber reinforced resin layer 30 may mean that the first glass fiber reinforced resin layer 201 is sealingly connected to the second glass fiber reinforced resin layer 202 within the glass fiber reinforced resin layer 20, or that the first carbon fiber reinforced resin layer 301 is sealingly connected to the second carbon fiber reinforced resin layer 302 within the carbon fiber reinforced resin layer 30. In this manner, the first glass fiber reinforced resin layer 201 is sealingly connected to the second glass fiber reinforced resin layer 202 made of the same material, or the first carbon fiber reinforced resin layer 301 is sealingly connected to the second carbon fiber reinforced resin layer 302 made of the same material. This improves the bonding strength between the fiber reinforced resin layers of the protective plate 1, thereby improving the overall strength of the protective plate 1.

[0032] In some embodiments of the present disclosure,

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[0033] In the present disclosure, 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 may 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 ρ0 g / cm of the glass fiber reinforced resin layer 3 is 1.5g / cm 3 ~1.9g / cm 3 For example, the density of the glass fiber reinforced resin layer 20 is 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 σ0 MPa of the glass fiber reinforced resin layer 20 may be 280 MPa to 380 MPa. For example, the tensile strength of the glass fiber reinforced resin layer 20 may be 280 MPa, 290 MPa, 300 MPa, 310 MPa, 320 MPa, 330 MPa, 340 MPa, 350 MPa, 360 MPa, 370 MPa, or 380 MPa. The glass fiber reinforced resin layer 20 has excellent properties such as high specific strength, high specific modulus of elasticity, and corrosion resistance, and can provide good protection for the metal plate 10. A glass fiber reinforced resin layer 20 within the above condition range is used to reduce weight, improve the protective effect for the metal plate 10, and improve the impact resistance of the protective plate 1, thereby ensuring the long-term use of the protective plate.

[0034] In the present disclosure, the thickness d1mm of the carbon fiber reinforced resin layer 30 is 1.0mm to 2.0mm. For example, the thickness of the carbon fiber reinforced resin layer 30 may be 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.8mm, or 2.0mm. The density ρ1g / cm of the carbon fiber reinforced resin layer 30 3is 1.2g / cm 3 ~1.5g / cm 3 For example, the density of the carbon fiber reinforced resin layer 30 is 1.2 g / cm 3 , 1.3g / cm 3 , 1.4g / cm 3 , or 1.5 g / cm 3 The tensile strength σ1 MPa of the carbon fiber reinforced resin layer 30 may be 760 MPa to 860 MPa. For example, the tensile strength of the carbon fiber reinforced resin layer 30 may be 760 MPa, 770 MPa, 780 MPa, 790 MPa, 800 MPa, 810 MPa, 820 MPa, 830 MPa, 840 MPa, 850 MPa, or 860 MPa. Compared to a 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. A carbon fiber reinforced resin layer within the above condition range is used as an outer layer to adequately protect the metal plate 10 from damage, effectively improving the strength of the protective plate 1 and reducing the weight of the protective plate 1, thereby further improving the weight reduction effect of the protective plate 1.

[0035] In the present disclosure, 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 ρ2g / cm of the metal plate 10 3 is 7.8g / cm 3 ~8.7g / cm 3 For example, the density of the metal plate 10 is 7.8 g / cm 3 , 8.0g / cm 3 , 8.3g / cm 3 , 8.5g / cm 3 , or 8.7 g / cm 3The tensile strength σ2MPa of the metal plate 10 is 590 MPa to 1180 MPa. For example, the tensile strength of the metal plate 10 may be 590 MPa, 600 MPa, 650 MPa, 700 MPa, 750 MPa, 800 MPa, 850 MPa, 900 MPa, 950 MPa, 1000 MPa, or 1180 MPa. Using a metal plate 10 within the above range ensures the mechanical strength of the protection plate 1, improves impact resistance, effectively reduces costs, and is advantageous for reducing the weight of the vehicle.

[0036] In the present disclosure, the protective plate 1 may further include a fiber reinforced resin frame 40. In some embodiments of the present disclosure, the fiber reinforced resin frame 40 can be disposed between the first glass fiber reinforced resin layer 201 and the second glass fiber reinforced resin layer 202. The metal plate 10 is located inside 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 using the fiber reinforced resin frame 40 to form a closed space configured to accommodate 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.

[0037] It will be understood that the method for sealingly connecting the fiber reinforced resin frame 40, the first glass fiber reinforced resin layer 201, and the second glass fiber reinforced resin layer 202 to form a space configured to accommodate the metal plate 10 may include, but is not limited to, the following methods. For example, in a first method, 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 these three are sealingly connected by hot pressing. In a second method, 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 first glass fiber reinforced resin layer 201 are sealingly connected to the second glass fiber reinforced resin layer 202 by hot pressing. In a third method, 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 second glass fiber reinforced resin layer 202 are hermetically connected to the first glass fiber reinforced resin layer 201 by hot pressing. In a fourth method, a part of the fiber reinforced resin frame 40 and the first glass fiber reinforced resin layer 201 are integrally formed, and another part of the fiber reinforced resin frame 40 and the second glass fiber reinforced resin layer 202 are integrally formed, and the two integrally formed structures are sealed by hot pressing.

[0038] In some other embodiments of the present disclosure, 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. The first carbon fiber reinforced resin layer 301 and the second carbon fiber reinforced resin layer 302 are connected using the fiber reinforced resin frame 40 to form a closed space configured to accommodate 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.

[0039] It will be understood that the method for sealingly connecting the fiber reinforced resin frame 40, the first carbon fiber reinforced resin layer 301, and the second carbon fiber reinforced resin layer 302 to form a space configured to accommodate the metal plate 10 may include, but is not limited to, the following methods. For example, in a first method, 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 sealingly connected by hot pressing. In a second method, 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 first carbon fiber reinforced resin layer 301 are sealingly connected to the second carbon fiber reinforced resin layer 302 by hot pressing. In a third method, 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 second carbon fiber reinforced resin layer 302 are hermetically connected to the first carbon fiber reinforced resin layer 301 by hot pressing. In a fourth method, a part of the fiber reinforced resin frame 40 and the first carbon fiber reinforced resin layer 301 are integrally formed, and another part of the fiber reinforced resin frame 40 and the second carbon fiber reinforced resin layer 302 are integrally formed, and the two integrally formed structures are sealed by hot pressing.

[0040] In the present disclosure, 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. In this case, 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. This improves the overall strength of the protective plate.

[0041] 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 may 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 may be integrally formed, or the second carbon fiber-reinforced resin layer 302 and the carbon fiber-reinforced resin frame may be integrally formed, or the first carbon fiber-reinforced resin layer 301 and a portion of the carbon fiber-reinforced resin frame may be integrally formed, or the second carbon fiber-reinforced resin layer 302 and another portion of the carbon fiber-reinforced resin frame may 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. This improves the strength of the entire protective plate.

[0042] In the present disclosure, the thickness of the glass fiber reinforced resin layer 20 is the same as the thickness of the carbon fiber reinforced resin layer 30. Therefore, the strength of the entire protective plate 1 can be improved integrally, and the protective plate 1 has excellent impact resistance.

[0043] In the present disclosure, the thickness of the first glass fiber reinforced resin layer 201 is the same as the thickness of the second glass fiber reinforced resin layer 202. The thickness of the first carbon fiber reinforced resin layer 301 is the same as the thickness of the second carbon fiber reinforced resin layer 302. That is, the first glass fiber reinforced resin layer 201 and the second glass fiber reinforced resin layer 202 used as inner protective layers are arranged symmetrically with respect to the metal plate 10, and the first carbon fiber reinforced resin layer 301 and the second carbon fiber reinforced resin layer 302 used as outer protective layers are arranged symmetrically with respect to the metal plate 10. In this case, the advantages of the toughness of the glass fiber reinforced resin layer 20 and the high elastic modulus of the carbon fiber reinforced resin layer 30 can be utilized, thereby improving the protective effect of the protective plate 1.

[0044] In the present disclosure, 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. In this way, the composite structure formed by the glass fiber reinforced resin layer, the carbon fiber reinforced resin layer, and the metal plate has high strength and can provide good buffering function when the protective plate 1 is subjected to an energy impact, improving the energy absorption ability of the protective plate 1. As a result, the protective plate 1 has an excellent protective effect.

[0045] According to a second aspect of the present disclosure, there is provided a vehicle including a battery pack 2 and the above-described protective plate 1. The protective plate 1 is disposed below the battery pack 2. This vehicle has the features and advantages of the above-described protective plate 1. Details will not be described again in this specification.

[0046] In the present disclosure, a buffer zone may be provided between the battery pack 2 and the protective plate 1. By providing the buffer zone, when the protective plate 1 is subjected to an energy impact, the force buffering and protective function of the battery pack 2 can be effectively implemented, which helps to improve the protective effect of the protective plate 1.

[0047] In the present disclosure, the buffer zone can be filled with a buffer layer, which can be selected from a honeycomb material or a hard foam material, which can buffer and absorb part of the energy of an external impact and improve the compressive deformation resistance of the protective plate 1, thereby further protecting the battery pack 2.

[0048] In some embodiments of the present disclosure, the honeycomb material may be selected from PP honeycomb material or aluminum honeycomb material, and the rigid foam material may 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.

[0049] In the present disclosure, the second glass fiber reinforced resin layer 202 may be located on a side of the metal plate 10 that is remote from the battery pack 2. 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 a side of the metal plate 10 that is remote from the battery pack 2, the second glass fiber reinforced resin layer 202 is closer to the ground than the first glass fiber reinforced resin layer 201. In this case, by making the thickness of the second glass fiber reinforced resin layer 202 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 scratch resistance of the protective plate 1 can also be further increased.

[0050] In the present disclosure, a second carbon fiber reinforced resin layer 302 is provided on the side of the metal plate 10 away from the battery pack 2. 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 away from the battery pack 2, the second carbon fiber reinforced resin layer 302 is closer to the ground than the first carbon fiber reinforced resin layer 301. In this case, by making the thickness of the second carbon fiber reinforced resin layer 302 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 scratch resistance of the protective plate 1 can also be further increased.

[0051] In the following, the present disclosure is further explained by using examples.

[0052] Example 1 In this embodiment, the protective plate disclosed in the present disclosure 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 housed in a closed space formed by connecting the glass fiber reinforced resin layer and the carbon fiber reinforced resin layer. 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. The density of the glass fiber reinforced resin layer is ρ0g / 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 tensile strength of the carbon fiber reinforced resin layer is σ1 MPa. The tensile strength of the metal plate is σ2 MPa.

[0053] The thickness test method is as follows:

[0054] Five test points were arbitrarily selected using a caliper or micrometer, and the average of the measured values ​​was taken as the thickness of the product.

[0055] The density mentioned above is a bulk density, and the test method therefor is as follows.

[0056] The measurement methods for ρ0 and ρ1 are the same and are based on the Chinese national standard "GB / T 1033.1-2008 Density Measurement of Non-Foam Plastics, Part 1," where density = weight / volume. ρ2 is the density of the metal plate and is based on the Chinese national standard "GB / T 700-2018 Measurement, Part 1," where density = weight / volume.

[0057] The tensile strength test method is as follows.

[0058] The test method for σ0 and σ1 is the same. The tensile strength of the specimen is the maximum tensile force divided by the cross-sectional area. See GB / T 1040-2006, "Testing the Tensile Performance of Plastics." Using a 1A dumbbell specimen, the maximum tensile stress the specimen can withstand during the tensile test can be determined based on the instrument's force value. A tensile stress-strain curve can be plotted, and the maximum tensile strength can be read from the curve. σ2 is the tensile strength of the metal plate; that is, the specimen's tensile strength = maximum tensile force divided by the cross-sectional area. See GB / T 228-87, "Metallic Materials: Tensile Test Methods." Using a uniaxial tensile specimen, the maximum tensile stress the specimen can withstand during the tensile test can be determined based on the instrument's force value. A tensile stress-strain curve can be plotted, and the maximum tensile strength can be read from the curve.

[0059] Examples 2 to 48 The protective plates disclosed in the present disclosure are described in Examples 2 to 48 and include most of the structure of Example 1, but differ in that they use the metal plate, glass fiber reinforced resin layer, and carbon fiber reinforced resin layer described in Examples 2 to 48 in Table 1.

[0060] Comparison 1~4 The protective plates disclosed in the present disclosure are described in Comparative Examples 1 to 4 and include most of the structure of Example 1, but differ in that they use a metal plate, a glass fiber reinforced resin layer, and a carbon fiber reinforced resin layer as shown in Comparative Examples 1 to 4 in Table 1. [Table 1-1] [Table 1-2]

[0061] Note:

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[0062] Performance Test The protective plates provided in the above examples and comparative examples were subjected to the following performance tests, and the test results are recorded in Table 2.

[0063] A 25mm diameter, 10kg ball was used as the impact head to impact the protection plate, simulating the working conditions of a foreign object colliding with the protection plate. The center point of the battery protection plate and four points around it were selected as impact points, and five impacts were performed (the height of the ball can be adjusted to give the ball different impact energies). The amount of dent deformation of the protection plate at each impact point was measured, and the impact point with the largest amount of dent deformation was selected and recorded as the amount of dent deformation of the protection plate. [Table 2-1] [Table 2-2]

[0064] From the test results in Table 2, the protective plate of the present disclosure has a thickness of d0 mm of the glass fiber reinforced resin layer, a thickness of d1 mm of the carbon fiber reinforced resin layer, a thickness of d2 mm of the metal plate, and a density ρ of 0 g / cm 3 and the density of the carbon fiber reinforced resin layer ρ1g / cm 3 and the density of the metal plate ρ2g / cm3 The tensile strength of the glass fiber reinforced resin layer is σ0 MPa, the tensile strength of the carbon fiber reinforced resin layer is σ1 MPa, and the tensile strength of the metal plate is σ2 MPa.

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[0065] In the description herein, references to terms such as "one example," "some examples," "exemplary examples," "examples," "specific examples," or "some embodiments" mean that the particular feature, structure, material, or characteristic described with reference to an example or example is included in at least one example or example of the present disclosure. As used herein, general references to the above terms do not necessarily refer to the same example or example.

[0066] Although embodiments of the present disclosure have been shown and described, those skilled in the art will recognize that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present disclosure. The scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. A protective plate, A metal plate (10), a glass fiber reinforced resin layer (20), the glass fiber reinforced resin layer (20) including 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) being located on the metal plate (10) side, and the second glass fiber reinforced resin layer (202) being located on the side of the metal plate (10) away from the first glass fiber reinforced resin layer (201); a carbon fiber reinforced resin layer (30), the carbon fiber reinforced resin layer (30) including 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) being located on a 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) being located on a side of the second glass fiber reinforced resin layer (202) away from the metal plate (10); The metal plate (10) is sealed by the glass fiber reinforced resin layer (20) and / or the carbon fiber reinforced resin layer (30), The metal plate (10), the glass fiber reinforced resin layer (20), and the carbon fiber reinforced resin layer (30) are formed under the following conditions: [Equation 1] wherein d ０ is the thickness of the glass fiber reinforced resin layer (20), in mm; d １ is the thickness of the carbon fiber reinforced resin layer (30), in mm, d ２ is the thickness of the metal plate (10), in mm; ρ ０ is the density of the glass fiber reinforced resin layer (20), and its unit is g / cm ３ and ρ １ is the density of the carbon fiber reinforced resin layer (30), and its unit is g / cm ３ and ρ ２ is the density of the metal plate (10), and its unit is g / cm ３ and σ ０ is the tensile strength of the glass fiber reinforced resin layer (20), and its unit is MPa, σ １ is the tensile strength of the carbon fiber reinforced resin layer (30), and its unit is MPa, σ ２ is the tensile strength of the metal plate (10), in units of MPa; protection plate. 【Request Item 2】 【Number 2】 The protection plate according to claim 1 ,

3. The thickness d of the glass fiber reinforced resin layer (20) ０ mm is 1.0 mm to 2.0 mm, and the density ρ of the glass fiber reinforced resin layer (20) ０ g / cm ３ is 1.5 g / cm ３ ~1.9 g / cm ３ and the tensile strength σ of the glass fiber reinforced resin layer (20) ０ The protection plate according to claim 1 or 2, wherein the tensile strength is 280 MPa to 380 MPa.

4. The thickness d of the carbon fiber reinforced resin layer (30) １ mm is 1.0 mm to 2.0 mm, and the density ρ of the carbon fiber reinforced resin layer (30) １ g / cm ３ is 1.2 g / cm ３ ~1.5g / cm ３ and the tensile strength σ of the carbon fiber reinforced resin layer (30) １ The protective plate according to any one of claims 1 to 3, wherein the tensile strength is 760 MPa to 860 MPa.

5. The thickness d of the metal plate (10) ２ mm is 0.5 mm to 1.5 mm, and the density ρ of the metal plate (10) ２ g / cm ３ is 7.8 g / cm ３ ~8.7g / cm ３ and the tensile strength σ of the metal plate (10) ２ The protective plate according to any one of claims 1 to 4, wherein the tensile strength is 590 MPa to 1180 MPa.

6. Further provided with a fiber reinforced resin frame (40), the fiber-reinforced resin frame (40) is located between the first glass fiber-reinforced resin layer (201) and the second glass fiber-reinforced resin layer (202), the metal plate (10) is located inside the fiber-reinforced resin frame (40), 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), or The protective plate according to any one of claims 1 to 5, wherein the fiber-reinforced resin frame (40) is 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), an upper surface of the fiber-reinforced resin frame (40) is integrally connected to the first carbon fiber-reinforced resin layer (301), and a bottom surface of the fiber-reinforced resin frame (40) is integrally connected to the second carbon fiber-reinforced resin layer (302).

7. The protection plate according to any one of claims 1 to 6, wherein the thickness of the glass fiber reinforced resin layer (20) is the same as the thickness of the carbon fiber reinforced resin layer (30).

8. The thickness of the first glass fiber reinforced resin layer (201) is the same as the thickness 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 the thickness of the second carbon fiber reinforced resin layer (302). A protective plate according to any one of claims 1 to 7.

9. 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 the same. A protective plate according to any one of claims 1 to 8.

10. A vehicle comprising: a battery pack (2); and a protective plate (1) according to any one of claims 1 to 9, wherein the protective plate (1) is disposed below the battery pack (2).

11. 11. The vehicle according to claim 10, wherein a buffer zone is provided between the battery pack (2) and the protective plate (1).

12. 12. The vehicle of claim 11, wherein the buffer zone is filled with a buffer layer, the buffer layer being selected from a honeycomb material or a rigid foam material.

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