Aluminum-magnesium alloy new energy vehicle front cover and bending and stamping method thereof

Abstract

The present invention relates to the technical field of new energy vehicles, specifically to a front cover plate of an aluminum-magnesium alloy new energy vehicle, comprising a front cover plate body, the front cover plate body comprising a front cover plate and a rear cover plate, the front cover plate and the rear cover plate being hinged; both sides of the front end of the lower surface of the front cover plate are provided with electric telescopic rods, the bottom of the electric telescopic rod is fixedly connected to the car, the upper end of the electric telescopic rod is hinged to the lower surface of the front cover plate, one side of the rear cover plate is hinged to the car, and the other side of the rear cover plate is hinged to the front cover plate; the upper end surface of the rear cover plate is provided with a waterproof mechanism and an anti-collision mechanism, the waterproof mechanism is arranged at the connection between the front cover plate and the rear cover plate, and the anti-collision mechanism is arranged on the upper end surface of the rear cover plate. The present invention divides a traditional whole front cover plate into two, has a good anti-collision effect, when a collision occurs, the two cover plates have a very high protection effect, and can well protect the driver and passengers in the front row.

Description

Technical Field

[0001] The invention relates to an automobile front cover plate, in particular to an aluminum-magnesium alloy new energy automobile front cover plate and a bending and stamping method thereof, belonging to the technical field of new energy automobiles. Background Art

[0002] New energy vehicles refer to all other energy vehicles except gasoline and diesel engines, including fuel cell vehicles, hybrid vehicles, hydrogen energy vehicles and solar vehicles. The most popular new energy vehicles are fuel cell vehicles and hybrid vehicles. The main driving energy of these vehicles comes from the battery in the car, which is mostly nickel-metal hydride battery and lithium-ion battery.

[0003] Generally, the motor and battery of new energy vehicles are installed in the middle and rear section of the vehicle, and the luggage compartment is designed under the front cover of new energy vehicles;

[0004] Currently, the front covers of existing new energy vehicles are all designed in one piece, which only have the effect of closing the trunk and bringing aesthetic effects, but the protection effect is poor.

[0005] Therefore, it is urgent to improve the front cover of new energy vehicles to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide an aluminum-magnesium alloy new energy vehicle front cover plate and a bending and stamping method thereof, which divides a traditional whole front cover plate into two, has a good anti-collision effect, and when a collision occurs, the two covers have an extremely high protective effect, which can well protect the driver and passengers in the front row.

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] A front cover plate of an aluminum-magnesium alloy new energy vehicle, comprising a front cover plate body, wherein the front cover plate body comprises a front cover plate and a rear cover plate, wherein the front cover plate is connected to the rear cover plate;

[0009] Electric telescopic rods are arranged on both sides of the front end of the lower surface of the front cover plate, the electric telescopic rods are electrically connected to the internal vehicle system of the automobile, the bottom of the electric telescopic rods is fixedly connected to the automobile, the upper end of the electric telescopic rods is hinged to the lower surface of the front cover plate, one side of the rear cover plate is hinged to the automobile, and the other side of the rear cover plate is connected to the front cover plate;

[0010] The upper end surface of the rear section cover plate is provided with a waterproof mechanism and an anti-collision mechanism. The waterproof mechanism is provided at the connection between the front section cover plate and the rear section cover plate, and the anti-collision mechanism is provided on the upper end surface of the rear section cover plate.

[0011] Preferably, the thickness of the front cover plate is greater than that of the rear cover plate, the lower surface of the front cover plate and the lower surface of the rear cover plate are in the same horizontal plane, an extension plate is arranged above the connecting surface of the front cover plate and the rear cover plate, the extension plate wraps the connecting part of the front cover plate and the rear cover plate, and a downward slope is arranged at one end of the extension plate close to the rear cover plate, a connecting column is also transversely arranged on the connecting surface of the front cover plate and the rear cover plate, a connecting hole is penetrated through the connecting column, and the connecting part is located below the extension plate.

[0012] Preferably, square connecting plates are provided on both sides of the connecting surface between the rear section cover plate and the front section cover plate, a connecting rod is provided between the two square connecting plates, the connecting rod passes through the connecting hole, and the front section cover plate and the rear section cover plate are hinged through the connecting hole and the connecting rod.

[0013] Preferably, the waterproof mechanism includes a waterproof strip and a drainage groove formed on the waterproof strip, the waterproof strip is arranged on the upper end surface where the rear cover plate is adjacent to the front cover plate, the drainage groove is formed on a side of the waterproof strip away from the front cover plate, the side of the waterproof strip away from the front cover plate is a micro-arc surface structure expanding outward, and the drainage groove is also a corresponding micro-arc surface structure.

[0014] Preferably, the anti-collision mechanism includes an anti-collision plate, which is a titanium alloy steel plate. The anti-collision plate is arranged on the side of the rear cover plate close to the car windshield. The distance between the anti-collision plate and the waterproof mechanism is controlled to be 15 cm to 25 cm. The side of the anti-collision plate close to the waterproof mechanism is an outwardly expanding arc surface structure, and the side of the anti-collision plate close to the waterproof mechanism is provided with a downward slope.

[0015] Preferably, the square connecting plate includes an aluminum-magnesium alloy plate and a hard plastic plate, the side of the aluminum-magnesium alloy plate away from the rear section cover plate is an arc surface structure, the hard plastic plate is arranged on the front end surface of the arc surface structure of the aluminum-magnesium alloy plate, and the hard plastic plate and the aluminum-magnesium alloy plate are an integrally formed structure.

[0016] Preferably, the front end of the front section cover plate is provided with a downward slope, and the front section cover plate includes an aluminum-magnesium alloy layer and a carbon fiber layer.

[0017] Preferably, the rear section cover plate includes two layers of second aluminum-magnesium alloy plates and a titanium alloy reinforcement plate, and the titanium alloy reinforcement plate is arranged between the two layers of the second aluminum-magnesium alloy plates.

[0018] Preferably, the lower end surfaces of the front cover plate and the rear cover plate are both provided with ultra-thin storage compartments, a plurality of air-permeable strips are provided on the ultra-thin storage compartments, and the overall thickness of the ultra-thin storage compartments does not exceed 4 centimeters.

[0019] A bending and stamping method for an aluminum-magnesium alloy new energy vehicle front cover comprises the following steps:

[0020] S1: Manufacturing of the front cover plate: placing a composite plate made of an aluminum-magnesium alloy layer and a carbon fiber layer on a cutting machine for cutting and forming, placing the cut front cover plate on a punching machine for punching and forming to a desired curvature, punching out a downward slope at the front end of the front cover plate, welding an extension plate above the connecting surface of the front cover plate and the rear cover plate, punching out a downward slope on the side of the extension plate away from the front cover plate, welding a connecting column on the connecting surface of the front cover plate and the rear cover plate, and punching a connecting hole on the connecting column by a punching machine;

[0021] S2: Manufacturing of rear section cover plate: Place a composite plate made of two layers of the second aluminum-magnesium alloy plate and a titanium alloy reinforcement plate on a cutting machine for cutting and forming, place the cut rear section cover plate on a stamping machine for stamping and forming to the required curvature, weld square connecting plates on both sides of the connecting surface between the rear section cover plate and the front section cover plate, insert the connecting rod into the connecting hole, and then weld and fix the two ends of the connecting rod to the inner side surfaces of the two square connecting plates, select an alloy strip for outward expansion and bending, and then weld it to the upper end surface adjacent to the rear section cover plate and the front section cover plate to form a waterproof strip, open a drainage groove on the waterproof strip, select a titanium alloy plate for cutting to the required shape, and then weld the titanium alloy plate to the upper end surface of the rear section cover plate to form an anti-collision plate.

[0022] The present invention has at least the following beneficial effects:

[0023] 1. When a car rear-ends the car in front, the front cover plate is first squeezed and collided, and the pressure will be quickly transmitted to the connection between the front cover plate and the rear cover plate. The square connecting plate will be squeezed by the front cover plate, and the hard plastic plate will be broken, exposing the aluminum-magnesium alloy plate with a circular arc surface structure. At this time, the ordinary connection structure between the front cover plate and the rear cover plate becomes a hinged structure. The front cover plate will lift the rear cover plate to the car windshield through the hinged setting of the connecting rod connecting hole, and cover the car windshield to protect the front passengers of the car, prevent the parts of the front car from falling or flying out, causing secondary injuries to the people in the car, and improve the protection effect of the front cover plate of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 It is a front view of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the lower surface of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the rear cover plate of the present invention;

[0028] Figure 4 This is a schematic diagram of the front cover body of the present invention in an extended state;

[0029] Figure 5 It is a schematic diagram of the stress state of the front cover plate main body of the present invention;

[0030] Figure 6 This is a schematic diagram of the front cover body of the present invention in a normal state;

[0031] Figure 7 It is a cross-sectional view of the front cover plate of the present invention;

[0032] Figure 8 It is a cross-sectional view of the rear cover plate of the present invention;

[0033] Fig. 9 For the present invention Figure 6 A magnified image;

[0034] Fig.10 For the present invention Figure 8 Enlarged view of point B;

[0035] Fig.11 For the present invention Figure 5 Enlarged view of point C.

[0036] In the figure, 1-front cover body, 101-front section cover, 102-rear section cover, 2-electric telescopic rod, 3-waterproof mechanism, 301-waterproof strip, 302-drainage groove, 4-anti-collision mechanism, 401-anti-collision plate, 5-extension plate, 6-connecting column, 7-connecting hole, 8-square connecting plate, 801-aluminum-magnesium alloy plate, 802-rigid plastic plate, 9-connecting rod, 10-aluminum-magnesium alloy layer, 11-carbon fiber layer, 12-second aluminum-magnesium alloy plate, 13-titanium alloy reinforcement plate, 14-ultra-thin storage grid, 15-breathable strip. DETAILED DESCRIPTION

[0037] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0038] like Figure 1-Figure 11 As shown, the aluminum-magnesium alloy new energy vehicle front cover provided in this embodiment includes a front cover body 1, the front cover body 1 includes a front cover 101 and a rear cover 102, the front cover 101 is connected to the rear cover 102; the thickness of the front cover 101 is greater than the thickness of the rear cover 102, the lower surface of the front cover 101 and the lower surface of the rear cover 102 are in the same horizontal plane, an extension plate 5 is arranged above the connection surface between the front cover 101 and the rear cover 102, the extension plate 5 wraps the connection between the front cover 101 and the rear cover 102, and the end of the extension plate 5 close to the rear cover 102 is arranged with a downward slope, the front cover 1 A connecting column 6 is also horizontally arranged on the connecting surface between the rear cover plate 101 and the rear cover plate 102, and a connecting hole 7 is penetrated on the connecting column 6. The connecting part 6 is located below the extension plate 5. Square connecting plates 8 are arranged on both sides of the connecting surface between the rear cover plate 102 and the front cover plate 101. A connecting rod 9 is arranged between the two square connecting plates 8. The connecting rod 9 penetrates the connecting hole 7. The front cover plate 101 and the rear cover plate 102 are hinged through the connecting hole 7 and the connecting rod 9. The setting of the square connecting plate 8 is just engaged with the connecting surface of the front cover plate 101, which can ensure that the front cover plate body 1 is lifted and lowered as a whole, and the front cover plate 101 and the rear cover plate 102 will not be separated and lifted;

[0039] Electric telescopic rods 2 are arranged on both sides of the front end of the lower surface of the front cover plate 101. The bottom of the electric telescopic rod 2 is fixedly connected to the car. The lifting and lowering of the electric telescopic rod 2 is controlled by the car computer system to complete the opening and closing of the front cover plate body 1. The upper end of the electric telescopic rod 2 is hinged to the lower surface of the front cover plate 101, one side of the rear cover plate 101 is hinged to the car, and the other side of the rear cover plate 101 is connected to the front cover plate 101.

[0040] The upper end surface of the rear cover plate 102 is provided with a waterproof mechanism 3 and an anti-collision mechanism 4. The waterproof mechanism 3 includes a waterproof strip 301 and a drainage groove 302 formed on the waterproof strip 301. The waterproof strip 301 is provided on the upper end surface of the rear cover plate 102 adjacent to the front cover plate 101. The drainage groove 302 is provided on a side of the waterproof strip 301 away from the front cover plate 101. The side of the waterproof strip 301 away from the front cover plate 101 is a micro-arc surface structure expanding outwards, and the drainage groove 302 is also a micro-arc surface structure correspondingly. On rainy days or when washing the car, water will flow to the waterproof strip 301 and the drainage groove 302 through the slope of the rear cover plate 102. The water is discharged by using the waterproof strip 301 and the drainage groove 302. The setting of the micro-arc surface structure expanding outwards can diffuse and drain the water to both sides, and will not enter the interior of the car, thereby further improving the waterproof effect of the waterproof mechanism 3.

[0041] The anti-collision mechanism 4 includes an anti-collision plate 401, which is a titanium alloy steel plate. The anti-collision plate 401 is arranged on the side of the rear cover plate 102 close to the windshield of the car. The distance between the anti-collision plate 401 and the waterproof mechanism 3 is controlled to be 15 cm to 25 cm. The side of the anti-collision plate 401 close to the waterproof mechanism 3 is an outwardly expanding arc surface structure, and the side of the anti-collision plate 401 close to the waterproof mechanism 3 is provided with a downward slope. The anti-collision plate 401 made of titanium alloy steel plate has the advantages of light weight and high strength. The distance between the anti-collision plate 401 and the waterproof mechanism 3 is controlled to be 15 cm to 25 cm. The setting has both a protective effect and will not make the manufacturing cost too high. The side of the anti-collision plate 401 close to the waterproof mechanism 3 is an outwardly expanding arc surface structure and is provided with a downward slope, which can greatly reduce the resistance of the car when driving;

[0042] The waterproof mechanism 3 is arranged at the connection between the front cover plate 101 and the rear cover plate 102 , and the anti-collision mechanism 4 is arranged on the upper end surface of the rear cover plate 102 .

[0043] In this embodiment, if Fig.10 As shown, the square connecting plate 8 includes an aluminum-magnesium alloy plate 801 and a hard plastic plate 802. The side of the aluminum-magnesium alloy plate 801 away from the rear cover plate 102 is an arc surface structure. The hard plastic plate 802 is arranged on the front end surface of the aluminum-magnesium alloy plate 801 at the arc surface structure. The hard plastic plate 802 and the aluminum-magnesium alloy plate 801 are an integrally formed structure. When the hard plastic plate 802 is arranged on the front cover plate 101 of the automobile and is squeezed and collided, it will be broken, so that the aluminum-magnesium alloy plate 801 with the arc surface structure is exposed. The setting of the arc surface structure will not affect the hinge effect of the front cover plate 101 and the rear cover plate 102 after the hard plastic plate 802 is broken.

[0044] In this embodiment, if Figure 7As shown, the front end of the front cover plate 101 is provided with a downward slope, and the front cover plate 101 includes an aluminum-magnesium alloy layer 10 and a carbon fiber layer 11. The front end of the front cover plate 101 has a downward slope that conforms to aerodynamics and reduces the resistance of the car when driving. The front cover plate 101 composed of the aluminum-magnesium alloy layer 10 and the carbon fiber layer 11 has good strength and can also greatly reduce the overall weight of the front cover plate 101.

[0045] In this embodiment, if Figure 8 As shown, the rear section cover plate 102 includes two layers of second aluminum-magnesium alloy plates 12 and a titanium alloy reinforcement plate 13. The titanium alloy reinforcement plate 13 is arranged between the two layers of second aluminum-magnesium alloy plates 12. The arrangement of the two layers of aluminum-magnesium alloy plates 12 wrapping the titanium alloy reinforcement plate 13 makes the rear section cover plate 102 have higher strength and rigidity, and can better protect the front row in the vehicle.

[0046] In this embodiment, if Figure 2 As shown, the lower end surfaces of the front cover plate 101 and the rear cover plate 102 are both provided with ultra-thin storage compartments 14, and a plurality of air-permeable strips 15 are provided on the ultra-thin storage compartments 14. The overall thickness of the ultra-thin storage compartments 14 does not exceed 4 centimeters. The ultra-thin storage compartments 14 can hold important documents. The air-permeable strips 15 are provided to make the ultra-thin storage compartments 14 breathable, and the documents in the ultra-thin storage compartments 14 will not become moldy or damp. The overall thickness of the ultra-thin storage compartments 14 does not exceed 4 centimeters, which will not affect the closing effect of the front cover plate body 1.

[0047] A bending and stamping method for an aluminum-magnesium alloy new energy vehicle front cover comprises the following steps:

[0048] S1: Manufacturing of the front cover plate: placing a composite plate made of an aluminum-magnesium alloy layer 10 and a carbon fiber layer 11 on a cutting machine for cutting and forming, placing the cut front cover plate 101 on a punching machine for punching and forming to a desired curvature, then punching out a downward slope at the front end of the front cover plate 101, welding an extension plate 5 above the connecting surface between the front cover plate 101 and the rear cover plate 102, punching out a downward slope on the side of the extension plate 5 away from the front cover plate 101, welding a connecting column 6 on the connecting surface between the front cover plate 101 and the rear cover plate 102, and punching a connecting hole 7 on the connecting column 6 by a punching machine;

[0049] S2: Manufacturing of the rear section cover plate: a composite plate made of two layers of the second aluminum-magnesium alloy plate 12 and the titanium alloy reinforcement plate 13 is placed on a cutting machine for cutting and forming, the cut rear section cover plate 102 is placed on a punching machine for punching and forming to the required curvature, square connecting plates 8 are welded on both sides of the connecting surface between the rear section cover plate 102 and the front section cover plate 101, the connecting rod 9 is inserted into the connecting hole 7, and then the two ends of the connecting rod 9 are welded and fixed to the inner side surfaces of the two square connecting plates 8, an alloy strip is selected for outward expansion and bending, and then welded to the upper end surface of the rear section cover plate 102 adjacent to the front section cover plate 101 to form a waterproof strip 301, a drainage groove 302 is opened on the waterproof strip 301, a titanium alloy plate is selected for cutting to the required shape, and then the titanium alloy plate is welded to the upper end surface of the rear section cover plate 102 to form an anti-collision plate 401.

[0050] like Figure 1-Figure 11 As shown, the principle of the front cover plate of an aluminum-magnesium alloy new energy vehicle provided in this embodiment is as follows: when a car rear-ends the front car, the front cover plate 101 will first be squeezed and collided. When the front end cover plate 101 of the car is squeezed and collided, the pressure will be quickly transmitted to the connection between the front cover plate 101 and the rear cover plate 102, and the square connecting plate 8 will be squeezed by the front cover plate 101. The hard plastic plate 802 will be broken, exposing the aluminum-magnesium alloy plate 801 with a circular arc surface structure. At this time, the ordinary connection structure between the front cover plate 101 and the rear cover plate 102 becomes a hinged structure. The front cover plate 101 will lift the rear cover plate 102 to the car windshield by using the hinged setting of the connecting rod 9 and the connecting hole 7, and cover the car windshield to protect the front passengers of the car, prevent the parts of the front car from falling off, or parts from flying out, causing secondary injuries to the people in the car.

[0051] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0052] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0053] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. An aluminum-magnesium alloy new energy vehicle front cover, comprising a front cover body (1), characterized in that: The front cover plate body (1) comprises a front cover plate (101) and a rear cover plate (102), wherein the front cover plate (101) is connected to the rear cover plate (102); Electric telescopic rods (2) are arranged on both sides of the front end of the lower surface of the front cover plate (101); the electric telescopic rods (2) are electrically connected to the internal vehicle system of the automobile; the bottom of the electric telescopic rod (2) is fixedly connected to the automobile; the upper end of the electric telescopic rod (2) is hinged to the lower surface of the front cover plate (101); one side of the rear cover plate (102) is hinged to the automobile; and the other side of the rear cover plate (102) is connected to the front cover plate (101); The upper end surface of the rear section cover plate (102) is provided with a waterproof mechanism (3) and an anti-collision mechanism (4); the waterproof mechanism (3) is provided at the connection between the front section cover plate (101) and the rear section cover plate (102); the anti-collision mechanism (4) is provided at the upper end surface of the rear section cover plate (102); the thickness of the front section cover plate (101) is greater than the thickness of the rear section cover plate (102); the lower surface of the front section cover plate (101) and the lower surface of the rear section cover plate (102) are in the same horizontal plane; an extension plate (5) is provided above the connection surface between the front section cover plate (101) and the rear section cover plate (102); the extension plate (5) connects the connection between the front section cover plate (101) and the rear section cover plate (102) Wrapped, one end of the extension plate (5) close to the rear section cover plate (102) is provided with a downward slope, a connecting column (6) is also transversely arranged on the connecting surface of the front section cover plate (101) and the rear section cover plate (102), a connecting hole (7) is penetrated through the connecting column (6), the connecting column (6) is located below the extension plate (5), square connecting plates (8) are arranged on both sides of the connecting surface of the rear section cover plate (102) and the front section cover plate (101), a connecting rod (9) is arranged between the two square connecting plates (8), the connecting rod (9) penetrates the connecting hole (7), the front section cover plate (101) and the rear section cover plate (102) are connected through the connecting hole (7) and the connecting rod (9) The waterproof mechanism (3) comprises a waterproof strip (301) and a drainage groove (302) provided on the waterproof strip (301); the waterproof strip (301) is arranged on the upper end surface of the rear cover plate (102) adjacent to the front cover plate (101); the drainage groove (302) is provided on a side of the waterproof strip (301) away from the front cover plate (101); the side of the waterproof strip (301) away from the front cover plate (101) is a micro-arc surface structure expanding outwards; the drainage groove (302) is also a micro-arc surface structure correspondingly; the anti-collision mechanism (4) comprises an anti-collision plate (401); the anti-collision plate (401) is a titanium alloy steel plate; the anti-collision plate (401) ) is arranged on a side of the rear section cover plate (102) close to the automobile windshield, the distance between the anti-collision plate (401) and the waterproof mechanism (3) is controlled to be 15 cm to 25 cm, the side of the anti-collision plate (401) close to the waterproof mechanism (3) is an outwardly expanding arc surface structure, and the side of the anti-collision plate (401) close to the waterproof mechanism (3) is provided with a downwardly inclined slope, the square connecting plate (8) includes an aluminum-magnesium alloy plate (801) and a hard plastic plate (802), the side of the aluminum-magnesium alloy plate (801) away from the rear section cover plate (102) is a arc surface structure, and the hard plastic plate (802) is arranged on the front end surface of the aluminum-magnesium alloy plate (801) at the arc surface structure,The rigid plastic plate (802) and the aluminum-magnesium alloy plate (801) are integrally formed structures, the front end of the front section cover plate (101) is provided with a downwardly inclined slope, the front section cover plate (101) comprises an aluminum-magnesium alloy layer (10) and a carbon fiber layer (11), the rear section cover plate (102) comprises two layers of second aluminum-magnesium alloy plates (12) and a titanium alloy reinforcement plate (13), and the titanium alloy reinforcement plate (13) is provided between the two layers of the second aluminum-magnesium alloy plates (12).

2. The aluminum-magnesium alloy new energy vehicle front cover according to claim 1, characterized in that: The lower end surfaces of the front cover plate (101) and the rear cover plate (102) are both provided with an ultra-thin storage grid (14), and a plurality of air-permeable strips (15) are provided on the ultra-thin storage grid (14). The overall thickness of the ultra-thin storage grid (14) does not exceed 4 centimeters.

3. A bending and stamping method for the aluminum-magnesium alloy new energy vehicle front cover as claimed in claim 2, characterized in that: The steps include: S1: Manufacturing of the front section cover plate: placing a composite plate made of the aluminum-magnesium alloy layer (10) and the carbon fiber layer (11) on a cutting machine for cutting and forming, placing the cut front section cover plate (101) on a punching machine for punching and forming to a desired curvature, punching out a downward slope at the front end of the front section cover plate (101), welding the extension plate (5) above the connection surface between the front section cover plate (101) and the rear section cover plate (102), punching out a downward slope on the side of the extension plate (5) away from the front section cover plate (101), welding the connection column (6) on the connection surface between the front section cover plate (101) and the rear section cover plate (102), and punching out the connection hole (7) on the connection column (6) using a punching machine; S2: Manufacturing of the rear cover plate: a composite plate made of two layers of the second aluminum-magnesium alloy plate (12) and the titanium alloy reinforcement plate (13) is placed on a cutting machine for cutting and forming, the cut rear cover plate (102) is placed on a punching machine for punching and forming to a desired curvature, the square connecting plates (8) are welded to both sides of the connecting surface between the rear cover plate (102) and the front cover plate (101), the connecting rod (9) is inserted into the connecting hole (7), and then the connecting rod (9) is welded to the front cover plate (101). ) are welded and fixed to the inner side surfaces of the two square connecting plates (8), an alloy strip is selected to be expanded and bent outwardly, and then welded to the upper end surface of the rear section cover plate (102) adjacent to the front section cover plate (101) to form the waterproof strip (301), the drainage groove (302) is opened on the waterproof strip (301), a titanium alloy plate is selected to be cut into a desired shape, and then the titanium alloy plate is welded to the upper end surface of the rear section cover plate (102) to form the anti-collision plate (401).

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