Vehicle body reinforcement structure and vehicle

Abstract

The application belongs to the technical field of vehicles and provides a vehicle body reinforcing structure and a vehicle. The vehicle body reinforcing structure comprises a first reinforcing member and a second reinforcing member. The first reinforcing member comprises at least one cross connecting part. The second reinforcing member comprises at least one reinforcing part extending along the length direction of one side surface of a battery pack. The first reinforcing member and the second reinforcing member both extend along the length direction of one side surface of the battery pack. The two ends of the first reinforcing member and the second reinforcing member are connected to the vehicle body. The vehicle body reinforcing structure is applied to the vehicle and is used for reinforcing the part structure of the vehicle body in which the battery pack is installed, so as to improve the rigidity of the vehicle body. The application can solve the problem that the vehicle is unbalanced due to insufficient rigidity in the prior art.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a vehicle body reinforcement structure and a vehicle. Background Technology

[0002] In recent years, with the rapid development of the vehicle industry, electric vehicles have gradually gained more consumer recognition due to their advantages such as fast response speed, energy saving, and emission reduction. Electric vehicles are powered by battery packs, which are typically located at the bottom of the vehicle. Because of the relatively large weight of the battery pack, the vehicle's responsiveness during cornering is relatively poor, easily leading to vehicle imbalance. Therefore, it is necessary to improve the vehicle's rigidity to ensure responsiveness during cornering.

[0003] Patent document CN103429487A discloses a front body structure comprising a pair of front longitudinal beams located inside the front compartment and extending in the longitudinal direction of the vehicle body; a pair of sliding pillars disposed on both sides of the front compartment in the width direction and housing the front wheel suspension; and a reinforcing member connected to the upper part of the sliding pillars and the front longitudinal beams opposite to the sliding pillars, extending between them. This front body structure improves the torsional rigidity and lateral bending rigidity of the vehicle body.

[0004] However, the problem of vehicle imbalance caused by insufficient body rigidity due to the installation of the battery pack remains unresolved. Summary of the Invention

[0005] The purpose of this application is to provide a vehicle body reinforcement structure, which aims to solve the technical problem of vehicle imbalance caused by insufficient vehicle body rigidity due to the installation of battery packs in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] In a first aspect, a vehicle body reinforcement structure is provided, installed inside a vehicle, the vehicle including a vehicle body and a battery pack disposed within the vehicle body, the vehicle body reinforcement structure including a first reinforcement member and a second reinforcement member, the first reinforcement member including at least one cross connection portion, the second reinforcement member including at least one reinforcement portion extending along the length direction of one side of the battery pack; both the first reinforcement member and the second reinforcement member extend along the length direction of one side of the battery pack, and both ends of the first reinforcement member and the second reinforcement member are respectively connected to the vehicle body.

[0008] The beneficial effects of the vehicle body reinforcement structure provided by this invention are as follows: Since the first reinforcing member includes at least one cross-connecting portion, and the second reinforcing member includes at least one reinforcing portion extending along the length direction of one side of the battery pack, and the first and second reinforcing members extend in the same direction (both extending along the length direction of one side of the battery pack), the combined effect of the cross-connecting portion and the reinforcing portion improves the structural strength of the vehicle body. By respectively setting the first and second reinforcing members on the side of the battery pack and connecting them to the vehicle body, the vehicle body near the battery pack is reinforced, improving the structural rigidity of the vehicle body near the battery pack and, to a certain extent, solving the problem of vehicle imbalance caused by insufficient rigidity.

[0009] In one possible design, the first reinforcing member includes a first reinforcing rod and a second reinforcing rod, which intersect to form the cross connection.

[0010] By adopting the above technical solution, a cross connection is formed by the intersection of the first reinforcing rod and the second reinforcing rod, resulting in a simple structure that is easy to assemble.

[0011] In one possible design, the central axis of the first reinforcing rod, the central axis of the second reinforcing rod, and the central axis of the reinforcing part are coplanar on the first reference plane.

[0012] By adopting the above technical solution, the first reinforcing rod, the second reinforcing rod, and the reinforcing part are arranged coplanarly, which makes the stress on the vehicle body reinforcement structure more balanced and improves the stability of the vehicle body reinforcement structure. In addition, the coplanar arrangement of the first reinforcing rod, the second reinforcing rod, and the reinforcing part can reduce the space occupied by the vehicle body reinforcement structure, which facilitates the layout of other structures in the vehicle body.

[0013] In one possible design, the vehicle body reinforcement structure further includes a connecting bracket that can be connected to the vehicle body, and at least one of the first reinforcement member and the second reinforcement member can be connected to the battery pack via the connecting bracket.

[0014] By adopting the above technical solution, at least one of the first reinforcing member and the second reinforcing member is connected to the battery pack through a connecting bracket, and the connecting bracket is also connected to the vehicle body. That is, the vehicle body reinforcing structure increases the connection points with the vehicle body through the connecting bracket, thereby improving the stability of the vehicle body reinforcing structure.

[0015] In one possible design, one end of the connecting bracket has a first connecting portion and the other end has a second connecting portion. The first connecting portion is connected to the battery pack, and the second connecting portion is connected to the vehicle body. The first connecting portion is located on one side of the first reference surface, and the second connecting portion is located on the other side of the first reference surface.

[0016] By adopting the above technical solution, the area of ​​the battery pack used to connect with the first connecting part is called the first connecting point, and the area of ​​the vehicle body used to connect with the second connecting part is called the second connecting point. The above technical solution is applicable when the lateral distance between the connecting point of the battery pack and the second connecting point of the vehicle body is relatively far. By setting the first connecting part and the second connecting part on both sides of the first reference surface, the vehicle body reinforcement structure can be connected to the second connecting point of the battery pack and the first connecting point of the vehicle body respectively, while reducing the tilt angle of the first reference surface relative to the horizontal plane, thereby improving the structural stability of the vehicle body reinforcement structure.

[0017] In one possible design, the connecting bracket includes a wrapping portion that wraps around the outer wall of the first reinforcing member or the second reinforcing member connected to the connecting bracket.

[0018] By adopting the above technical solution, the contact area with the corresponding first or second reinforcing member is increased by setting the wrapping part, thereby improving the connection stability between the connecting bracket and the corresponding first or second reinforcing member.

[0019] In one possible design, the first reinforcing rod includes a first bend, and the first reinforcing rod and the reinforcing portion form a triangular structure; and / or,

[0020] The second reinforcing rod includes a second bend, and the second reinforcing rod and the reinforcing part together form a triangular structure.

[0021] By adopting the above technical solution, the first reinforcing rod and the reinforcing part form a triangular structure, and / or the second reinforcing rod and the reinforcing part form a triangular structure. The stability of the vehicle body reinforcing structure is improved by leveraging the strong stability characteristic of triangles.

[0022] In one possible design, one end of the first reinforcing rod is connected to one end of the second reinforcing rod to form a first fixing part, and the first reinforcing rod and the second reinforcing rod form a triangular structure between the first fixing part and the cross connection part; and / or,

[0023] The other end of the first reinforcing rod is connected to the other end of the second reinforcing rod to form a second fixing part, and the first reinforcing rod and the second reinforcing rod form a triangular structure between the second fixing part and the cross connection part.

[0024] By adopting the above technical solution and utilizing the structural features of the first and second reinforcing rods, at least two triangular structures are formed after the first and second reinforcing rods are connected. The structural stability of the first reinforcing member is improved by utilizing the stronger stability of triangles.

[0025] In one possible design, there are two connecting brackets. One connecting bracket is connected to the first bent portion of the first reinforcing rod and is inclined towards the center of the reinforcing portion and connected to the reinforcing portion. The other connecting bracket is connected to the second bent portion of the second reinforcing rod and is inclined towards the center of the reinforcing portion and connected to the reinforcing portion. The first bent portion and the second bent portion are on opposite sides of the cross connection portion.

[0026] By adopting the above technical solution, on the one hand, the addition of two connecting brackets increases the number of connection points between the vehicle body reinforcement structure and the vehicle body; on the other hand, the two connecting brackets connect the first reinforcing rod and the reinforcing part, and also connect the second reinforcing rod and the reinforcing part, thereby improving the structural stability of the vehicle body reinforcement structure. Simultaneously, because the connecting bracket is connected to the first bend of the first reinforcing rod and tilts towards the center of the reinforcing part, the connecting bracket, a portion of the first reinforcing rod, and a portion of the reinforcing part form a triangular-like structure. Similarly, because the other connecting bracket is connected to the second bend of the second reinforcing rod and tilts towards the center of the reinforcing part, the connecting bracket, a portion of the second reinforcing rod, and a portion of the reinforcing part also form a triangular-like structure, further improving the stability of the vehicle body reinforcement structure. In the projection of the vehicle body reinforcement structure onto the first reference plane, the two connecting brackets divide the area enclosed by the outer edge of the projection of the vehicle body reinforcement structure onto the first reference plane into three parts of similar or equal area, resulting in a more balanced stress distribution and higher structural stability.

[0027] In one possible design, the second reinforcing rod includes a first support rod and a second support rod, which are respectively connected to both sides of the first reinforcing rod to form the cross connection portion with the first reinforcing rod.

[0028] By adopting the above technical solution, the first and second supports of the second reinforcing rod are respectively connected to both sides of the first reinforcing rod to form a cross connection with the first reinforcing rod. This avoids the problem of interference between the first and second reinforcing rods when they are cross-connected, which would result in a larger thickness of the first reinforcing member and make the first reinforcing member occupy less space.

[0029] In a second aspect, a vehicle is provided, including a vehicle body and a battery pack installed in the vehicle body, the vehicle further including the vehicle body reinforcement structure provided in the first aspect.

[0030] The beneficial effect of the vehicle provided in this application is that the rigidity of the vehicle body near the battery pack is enhanced due to the presence of a body reinforcement structure next to the battery pack. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of a vehicle body reinforcement structure installed on a vehicle body according to an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of a vehicle body reinforcement structure provided in one embodiment of this application;

[0034] Figure 3 This is a schematic diagram of another perspective of the vehicle body reinforcement structure provided in one embodiment of this application;

[0035] Figure 4 A schematic diagram showing the connection of the two ends of the connecting bracket in a vehicle body reinforcement structure provided in one embodiment of this application, with both ends located on the same side;

[0036] Figure 5 A schematic diagram showing the connection of a connecting bracket with its two ends located on different sides in a vehicle body reinforcement structure provided in one embodiment of this application;

[0037] Figure 6 A schematic diagram showing the connection of the two ends of the connecting bracket in a vehicle body reinforcement structure provided in another embodiment of this application, where both ends are located on the same side;

[0038] Figure 7 This is a schematic diagram showing the connection of the two ends of the connecting bracket located on different sides in a vehicle body reinforcement structure provided for another embodiment of this application.

[0039] The details of the reference numerals used in the above figures are as follows:

[0040] 100, Vehicle body; 110, First connection point; 200, Battery pack; 210, Second connection point; 300, First reinforcing member; 310, Cross connection part; 320, First reinforcing rod; 330, Second reinforcing rod; 331, First support rod; 332, Second support rod; 340, Second mounting base; 350, Third mounting base; 400, Second reinforcing member; 410, Reinforcing part; 420, First mounting base; 500, Connecting bracket; 510, First connecting part; 511, First mounting hole; 520, Second connecting part; 521, Second mounting hole; 530, Main bracket; 531, Groove part; 540, Auxiliary bracket; W1, First reference surface; W2, Horizontal plane. Detailed Implementation

[0041] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0043] It is important to understand that the terms "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the vehicle's orientation in a horizontal direction.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] To illustrate the technical solutions described in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0046] like Figures 1 to 3 As shown, one embodiment of this application provides a vehicle body reinforcement structure installed inside a vehicle, the vehicle including a vehicle body 100 and a battery pack 200 disposed within the vehicle body 100. The vehicle body reinforcement structure includes a first reinforcing member 300 and a second reinforcing member 400, both extending along the length direction of one side of the battery pack 200. The two ends of the first reinforcing member 300 are respectively connected to the vehicle body 100, and the first reinforcing member 300 includes at least one cross-connection portion 310; the second reinforcing member 400 includes at least one reinforcing portion 410 extending along the length direction of one side of the battery pack 200, and the two ends of the second reinforcing member 400 are respectively connected to the vehicle body 100.

[0047] The vehicle body reinforcement structure provided in this embodiment is disposed in a vehicle having a battery pack 200 and is located beside the battery pack 200. The vehicle body reinforcement structure can be installed on either side of the battery pack 200. The first reinforcing member 300 and the second reinforcing member 400 in the vehicle body reinforcement structure are located on the same side of the battery pack 200. Since the first reinforcing member 300 includes at least one cross-connection portion 310, and the second reinforcing member 400 includes at least one reinforcing portion 410 extending along the length direction of one side of the battery pack 200, the structural strength of the vehicle body reinforcement structure is greatly improved under the combined action of the cross-connection portion 310 and the reinforcing portion 410. Since the first reinforcing member 300 and the second reinforcing member 400 are respectively disposed on the side of the battery pack 200 and respectively connected to the vehicle body 100, the vehicle body reinforcement structure reinforces the vehicle body 100 near the battery pack 200, improves the structural rigidity of the vehicle body 100 near the battery pack 200, and to a certain extent solves the problem of vehicle imbalance caused by insufficient rigidity.

[0048] In one embodiment, the vehicle body reinforcement structure is installed on the front or rear side of the battery pack 200. The left and right ends of the first reinforcement member 300 are respectively fixed to the left and right sides of the vehicle body 100, and the left and right ends of the second reinforcement member 400 are also respectively fixed to the left and right sides of the vehicle body 100. Since the greatest shaking usually occurs during vehicle operation, particularly during starting and braking, and this shaking is mostly in the front-to-back direction, installing the vehicle body reinforcement structure on the front or rear side of the battery pack 200, through the first reinforcement member 300 and the second reinforcement member 400 facing the sides of the battery pack 200, provides a certain degree of restraint on the battery pack 200. This improves the fixation effect of the battery pack 200 during vehicle starting and braking, thus enhancing the stability of the battery pack 200.

[0049] In one specific embodiment, the second reinforcing member 400 includes a reinforcing portion 410 extending in the left-right direction. When the left and right ends of the second reinforcing member 400 are respectively connected to the left and right sides of the vehicle body 100, the central axis of the reinforcing portion 410 is parallel to the horizontal plane and extends in the left-right direction. When there are multiple reinforcing portions 410, the central axes of each reinforcing portion 410 are parallel to each other and spaced apart.

[0050] In another specific embodiment, the central axis of the reinforcing part 410 intersects the horizontal plane and extends in the left-right direction.

[0051] In one feasible embodiment, the left end of the reinforcing part 410 can be connected to the left end of the first reinforcing member 300 and then connected together to the left side of the vehicle body 100, and the right end of the reinforcing part 410 can be connected to the right end of the first reinforcing member 300 and then connected together to the right side of the vehicle body 100.

[0052] In another feasible embodiment, the end of the reinforcing part 410 is not connected to the end of the first reinforcing member 300, but is connected to both sides of the vehicle body 100 respectively.

[0053] When there are multiple reinforcing parts 410, the left ends of the multiple reinforcing parts 410 can be connected together to the left side of the vehicle body 100 through an auxiliary connecting structure, and the right ends of the multiple reinforcing parts 410 can be connected together to the right side of the vehicle body 100 through an auxiliary connecting structure. Alternatively, the left and right ends of each reinforcing part 410 can be independently connected to the left and right sides of the vehicle body 100.

[0054] The reinforcing part 410 can be a plate structure, a rod structure, an I-beam structure, or other structural forms. For example, in... Figure 3 In the middle, the reinforcing part 410 is a crossbar, and its left and right ends are respectively connected to the left and right sides of the vehicle body 100.

[0055] When the reinforcing part 410 is a crossbar, to facilitate the connection between the end of the reinforcing part 410 and the vehicle body 100, optionally, first mounting seats 420 are provided at both ends of the reinforcing part 410. One end of the first mounting seat 420 is sleeved and fixed to the end of the reinforcing part 410. The first mounting seat 420 has a mounting platform, which can be a flat structure to facilitate contact with the planar part of the vehicle body 100, thereby increasing the contact area between the first mounting seat 420 and the vehicle body 100 and facilitating the fixed connection between the first mounting seat 420 and the vehicle body 100. The surface shape of the mounting platform can match the shape of the surface area on the vehicle body 100 used to connect the reinforcing part 410. For example, if the structural surface on the vehicle body 100 used to connect the reinforcing part 410 is an arc surface, then the surface of the mounting platform has an arc surface that matches the arc curvature of the vehicle body 100, so as to have a larger contact area with the vehicle body 100 and stronger connection stability. Through holes can be provided on the first mounting seat 420 to facilitate the connection of the first mounting seat 420 and the vehicle body 100 by bolts.

[0056] Optionally, the first mounting base 420 and the reinforcing part 410 are an integrated structure.

[0057] In one specific embodiment, the second reinforcing member 400 includes a reinforcing portion 410, which is a crossbar, and the crossbar is a hollow bar. The hollow bar configuration can reduce the weight of the crossbar and lower costs.

[0058] In one embodiment, the first reinforcing member 300 is a single-piece structure having at least one cross-connection 310. Alternatively, as... Figures 1 to 3As shown, in another embodiment, the first reinforcing member 300 includes a plurality of rod-shaped structures, which are intersected to form an intersecting connection portion 310. For example, the first reinforcing member 300 includes a first reinforcing rod 320 and a second reinforcing rod 330, which intersect to form the intersecting connection portion 310. The intersection of the first reinforcing rod 320 and the second reinforcing rod 330 means that the axis of the first reinforcing rod 320 intersects the axis of the second reinforcing rod 330, but the axes of the first reinforcing rod 320 and the second reinforcing rod 330 are not parallel and do not coincide. Compared to a first reinforcing member 300 manufactured in one piece, the first reinforcing member 300 including the first reinforcing rod 320 and the second reinforcing rod 330 is easier to manufacture and reduces production costs during the production process because the shape of the individual rod-shaped structures is relatively simple.

[0059] The number of first reinforcing rods 320 can be one or more, and the number of second reinforcing rods 330 can also be one or more. For example, in one configuration, there is one first reinforcing rod 320 and multiple second reinforcing rods 330, which are spaced apart and intersect and connect with each first reinforcing rod 320, forming a cross connection portion 310 at the intersection of the first reinforcing rod 320 and each second reinforcing rod 330. In another configuration, there are multiple first reinforcing rods 320 and one second reinforcing rod 330, which are spaced apart and intersect and connect with each second reinforcing rod 330, forming a cross connection portion 310 at the intersection of the first reinforcing rod 320 and each second reinforcing rod 330. In another configuration, there are multiple first reinforcing rods 320 and multiple second reinforcing rods 330. The multiple first reinforcing rods 320 and multiple second reinforcing rods 330 are cross-connected to form a mesh structure, and each intersection forms a cross connection part 310.

[0060] In all three configurations described above, multiple cross-connecting portions 310 are formed in the first reinforcing member 300. In the following configurations, the number of cross-connecting portions 310 is one. For example... Figure 2 As shown, the first reinforcing member 300 includes a first reinforcing rod 320 and a second reinforcing rod 330. The first reinforcing rod 320 and the second reinforcing rod 330 intersect to form a cross connection 310. This type of first reinforcing member 300 has a simple structure and is easy to assemble.

[0061] In one embodiment, such as Figure 4As shown, the central axes of the first reinforcing rod 320, the second reinforcing rod 330, and the reinforcing part 410 are coplanar on the first reference plane W1. Alternatively, the central axes of the first reinforcing rod 320, the second reinforcing rod 330, and the reinforcing part 410 are located in the same plane, which is the first reference plane W1. By arranging the first reinforcing rod 320, the second reinforcing rod 330, and the reinforcing part 410 coplanarly, the stress on the vehicle body reinforcement structure is more balanced, improving the stability of the vehicle body reinforcement structure. Furthermore, the coplanar arrangement of the first reinforcing rod 320, the second reinforcing rod 330, and the reinforcing part 410 reduces the space occupied by the vehicle body reinforcement structure, facilitating the layout of other structures within the vehicle body 100.

[0062] In one feasible implementation, the first reinforcing bar 320 and / or the second reinforcing bar 330 may be straight bars.

[0063] Or, such as Figures 1 to 3 As shown, in another feasible embodiment, both the first reinforcing rod 320 and the second reinforcing rod 330 include a bent portion. The first reinforcing rod 320 and the reinforcing portion 410 form a triangle, and the second reinforcing rod 330 and the reinforcing portion 410 also form a triangle. For ease of distinction, the bent portion of the first reinforcing rod 320 is referred to as the first bent portion, and the bent portion of the second reinforcing portion 410 is referred to as the second bent portion. Specifically, in the first reinforcing rod 320, the two ends of the first bent portion are respectively inclined relative to each other. When the first bent portion is a right angle, the first reinforcing rod 320 has an L-shaped structure. Similarly, in the second reinforcing rod 330, the two ends of the second bent portion are respectively inclined relative to each other. When the second bent portion is a right angle, the second reinforcing rod 330 has an L-shaped structure. Of course, the angles of the first bent portion and the second bent portion are both between 0° and 180°, and are not limited to 90°. Since the reinforcing part 410 has a laterally extending structure, it, together with the first reinforcing rod 320 having a first bend and the second reinforcing rod 330 having a second bend, respectively form a triangular structure. Because triangles have strong stability, the vehicle body reinforcing structure, which consists of at least two triangular structures, has even greater stability.

[0064] It is worth noting that when the first reinforcing rod 320 is a single integral rod-shaped structure, the area where it bends is called the first bend. For example, if the first reinforcing rod 320 is manufactured by bending a straight rod, the bent area is the first bend. When the first reinforcing rod 320 is an assembly of multiple rod-shaped structures, one of the rod-shaped structures is bent to form the first bend. The first bend has two ends, and the central axes of the two ends intersect. The other rod-shaped structures in the first reinforcing rod 320 are all straight rods, and each straight rod is coaxial with either end of the first bend. Similarly, when the second reinforcing rod 330 is a single integral rod-shaped structure, the area where it bends is called the second bend. For example, if the second reinforcing rod 330 is manufactured by bending a straight rod, the bent area is the second bend. When the second reinforcing rod 330 is a combination of multiple rod-shaped structures, one of the rod-shaped structures is bent to form a second bent portion. The second bent portion has two ends, and the central axes of the two ends intersect. The other rod-shaped structures in the second reinforcing rod 330 are all straight rods, and each straight rod is coaxial with any end of the second bent portion.

[0065] In one possible design, the first reinforcing rod 320 and the second reinforcing rod 330 intersect to form a cross connection 310. One end of the first reinforcing rod 320 is connected to one end of the second reinforcing rod 330 to form a first fixing part. The first reinforcing rod 320 and the second reinforcing rod 330 form a triangular structure between the first fixing part and the cross connection 310. Due to the strong stability of triangles, the structural stability of the first reinforcing rod 320 and the second reinforcing rod 330 connected to form a triangular structure is even stronger.

[0066] In one possible design, the other end of the first reinforcing rod 320 is connected to the other end of the second reinforcing rod 330 to form a second fixing part, and the first reinforcing rod 320 and the second reinforcing rod 330 form a triangular structure between the second fixing part and the cross connection part 310. Because triangles are highly stable, the structure of the first reinforcing rod 320 and the second reinforcing rod 330 connected to form the triangular structure has even greater structural stability.

[0067] In one possible design, the first reinforcing rod 320 and the second reinforcing rod 330 intersect to form a cross connection 310. One end of the first reinforcing rod 320 is connected to one end of the second reinforcing rod 330 to form a first fixing part, and the other end of the first reinforcing rod 320 is connected to the other end of the second reinforcing rod 330 to form a second fixing part. This creates a triangular structure between the first fixing part and the cross connection 310, and also between the second fixing part and the cross connection 310. In this arrangement, at least two triangular structures are formed after the first reinforcing rod 320 and the second reinforcing rod 330 are connected, utilizing the stronger stability of triangles to improve the structural stability of the first reinforcing member 300.

[0068] For example, the left end of the first reinforcing rod 320 is connected to the left end of the second reinforcing rod 330 to form a first fixing part, and the right end of the first reinforcing rod 320 is connected to the right end of the second reinforcing rod 330 to form a second fixing part. In the left-right direction, the cross-connecting part 310 is located between the first fixing part and the cross-connecting part 310. The first bending part is located between the first fixing part and the cross-connecting part 310, and the second bending part is located between the second fixing part and the cross-connecting part 310. That is to say, the structure of the first reinforcing rod 320 located on the left side of the cross-connecting part 310 and the structure of the second reinforcing rod 330 located on the left side of the cross-connecting part 310 are connected to form a triangular structure, and the structure of the first reinforcing rod 320 located on the right side of the cross-connecting part 310 and the structure of the second reinforcing rod 330 located on the right side of the cross-connecting part 310 are connected to form a triangular structure.

[0069] To facilitate the connection of the first reinforcing rod 320 and the second reinforcing rod 330, the vehicle body reinforcing structure also includes a second mounting base 340 and a third mounting base 350. The second mounting base 340 is used to connect the ends of the first reinforcing rod 320 and the second reinforcing rod 330 to form a first fixing part and a second fixing part. The third mounting base 350 is used to connect the intersection of the first reinforcing rod 320 and the second reinforcing rod 330 to form a cross connection part 310.

[0070] In one embodiment, such as Figures 1 to 3As shown, in the vehicle body reinforcement structure, there are two second mounting seats 340, located at both ends of the first reinforcing rod 320. One second mounting seat 340 is fitted and fixed to the left end of both the first reinforcing rod 320 and the left end of the second reinforcing rod 330, connecting the left ends of the first reinforcing rod 320 and the second reinforcing rod 330. The other second mounting seat 340 is fitted and fixed to the right end of both the first reinforcing rod 320 and the right end of the second reinforcing rod 330, connecting the right ends of the first reinforcing rod 320 and the right end of the second reinforcing rod 330. The second mounting base 340 may include a first fixing member and a second fixing member. Each of the first and second fixing members has two recesses. During assembly, the end of the first reinforcing rod 320 is placed in one recess of the first fixing member, and the end of the second reinforcing rod 330 is placed in the other recess of the first fixing member. The second fixing member is then fastened onto the first fixing member, so that the two recesses of the second fixing member are respectively fastened onto the first reinforcing rod 320 and the second reinforcing rod 330. The first fixing member and the second fixing member are then fixedly connected, thus completing the assembly that fixes the ends of the first reinforcing rod 320 and the second reinforcing rod 330 through the second mounting base 340. The first reinforcing member 300 can be connected to the vehicle body 100 through the two second mounting bases 340.

[0071] In one embodiment, the third mounting base 350 includes a third fixing member and a fourth fixing member, each having a recess. The intersection of the first reinforcing rod 320 and the second reinforcing rod 330 is placed in the recess of the third fixing member, and the fourth fixing member is fastened to the third fixing member, such that the recess of the fourth fixing member is fastened to the intersection of the first reinforcing rod 320 and the second reinforcing rod 330. Then, the third fixing member and the fourth fixing member are connected to complete the assembly of the first reinforcing rod 320 and the second reinforcing rod 330 to form a cross connection portion 310.

[0072] In one embodiment, the vehicle body reinforcement structure further includes a connecting bracket 500 that can be connected to the vehicle body 100. At least one of the first reinforcing member 300 and the second reinforcing member 400 is connected to the vehicle body 100 via the connecting bracket 500. That is, only the first reinforcing member 300 may be connected to the connecting bracket 500, or only the second reinforcing member 400 may be connected to the connecting bracket 500, or both the first reinforcing member 300 and the second reinforcing member 400 may be connected to the connecting bracket 500. Since the first reinforcing member 300 and the second reinforcing member 400 are respectively connected to the vehicle body 100, and the connecting bracket 500 is also connected to the vehicle body 100, the connection points between the vehicle body reinforcement structure and the vehicle body 100 are increased by the provision of the connecting bracket 500, thereby improving the connection stability between the vehicle body reinforcement structure and the vehicle body 100.

[0073] In one embodiment, the vehicle body reinforcement structure is connected to the battery pack 200. Specifically, at least one of the first reinforcing member 300 and the second reinforcing member 400 may be connected to the battery pack 200, or the connecting bracket 500 may be connected to the battery pack 200. By connecting the vehicle body reinforcement structure to the battery pack 200, the battery pack 200 is connected to the vehicle body 100 through the vehicle body reinforcement structure, thereby preventing the battery pack 200 from shaking during vehicle operation and improving the stability of the battery pack 200.

[0074] In one possible design, the connecting bracket 500 in the vehicle body reinforcement structure is connected to the battery pack 200. For example... Figures 1 to 3 As shown, the connecting bracket 500 has a first connecting portion 510 at one end and a second connecting portion 520 at the other end. The first connecting portion 510 is connected to the battery pack 200, and the second connecting portion 520 is connected to the vehicle body 100. Specifically, the first connecting portion 510 is connected to the side of the battery pack 200, and the second connecting portion 520 is connected to the bottom of the crossbeam of the vehicle body 100.

[0075] like Figure 1 and Figure 4 As shown, the area of ​​the battery pack 200 used to connect with the first connection part 510 is called the second connection point 210, and the area of ​​the vehicle body 100 used to connect with the second connection part 520 is called the first connection point 110.

[0076] like Figure 2 As shown, the first connecting part 510 and the second connecting point 210 of the battery pack 200 can be connected by bolts. The first connecting part 510 is provided with a first mounting hole 511 for the bolt to pass through, so as to connect the first connecting part 510 and the second connecting point 210 of the battery pack 200 by bolts. Figure 3 As shown, the second connecting part 520 can also be connected to the first connecting point 110 of the vehicle body 100 by bolts. The second connecting part 520 is provided with a second mounting hole 521 for bolts to pass through, so as to connect the second connecting part 520 to the first connecting point 110 of the vehicle body 100.

[0077] In one embodiment, the first connecting portion 510 and the second connecting portion 520 may both be disposed on the same side or opposite side of the vehicle body reinforcement structure. For example, when the vehicle body reinforcement structure is disposed on the front or rear side of the battery pack 200, and the first reinforcing member 300 and the second reinforcing member 400 both extend in the left-right direction, the first connecting portion 510 and the second connecting portion 520 may both be disposed in the front or rear region of the vehicle body reinforcement structure, or one of the first connecting portion 510 and the second connecting portion 520 may be disposed in the front region of the vehicle body reinforcement structure, and the other may be disposed in the rear region of the vehicle body reinforcement structure.

[0078] When the central axis of the first reinforcing rod 320 in the first reinforcing member 300, the central axis of the second reinforcing rod 330, and the central axis of the reinforcing part 410 in the second reinforcing member 400 are coplanar with the first reference plane W1, as follows: Figure 5 and Figure 7 As shown, in one feasible embodiment, the first connecting portion 510 and the second connecting portion 520 are both located on the same side of the first reference surface W1. Alternatively, as... Figure 4 and Figure 6 As shown, in another feasible embodiment, the first connecting portion 510 is located on one side of the first reference surface W1, and the second connecting portion 520 is located on the other side of the first reference surface W1.

[0079] like Figure 4 and Figure 5 As shown, when the lateral distance between the projections of the first connection point 110 of the battery pack 200 and the second connection point 210 of the vehicle body 100 on the horizontal plane is greater than or equal to a preset distance, if the first connection part 510 and the second connection part 520 are set on different sides of the first reference plane, the angle between the first reference plane W1 and the horizontal plane W2 is α (e.g., Figure 4 (As shown). If the first connecting part 510 and the second connecting part 520 are disposed on the same side of the first reference surface, the angle between the first reference surface W1 and the horizontal plane W2 is β (as shown). Figure 5 As shown in the figure, 90° < α < β. Since the closer the angle between the first reference plane W1 and the horizontal plane W2 is to 90°, the higher its stability, in this case, the first connecting part 510 and the second connecting part 520 are set on different sides of the first reference plane W1. The preset distance can be set according to actual needs, and this embodiment does not specifically limit it.

[0080] In other words, the above-mentioned technical solution of setting the first connecting part 510 and the second connecting part 520 on different sides of the first reference surface W1 is applicable to situations where the lateral distance between the first connecting point 110 and the second connecting point 210 is relatively far. By setting the first connecting part 510 and the second connecting part 520 on both sides of the first reference surface, the vehicle body reinforcement structure can be connected to the first connecting point 110 and the second connecting point 210 respectively, while reducing the tilt angle of the first reference surface relative to the horizontal plane, making the tilt angle closer to 90°, thereby improving the structural stability of the vehicle body reinforcement structure.

[0081] like Figure 6 and Figure 7 As shown, based on a similar principle, when the lateral distance between the projections of the first connecting portion 510 and the second connecting portion 520 on the horizontal plane is less than a preset distance (e.g., having a partially overlapping area or completely overlapping), compared to Figure 6The first connecting part 510 and the second connecting part 520 are arranged on both sides of the first reference surface W1. Figure 7 The arrangement of the first connecting part 510 and the second connecting part 520 on the same side of the first reference surface W1 is more conducive to improving the structural stability of the vehicle body reinforcement structure and also makes the structure setup and installation easier.

[0082] In one embodiment, such as Figure 3 As shown, the connecting bracket 500 has a groove portion 531. The groove portion 531 is formed where the connecting bracket 500 has a groove. When the connecting bracket 500 is connected to the first reinforcing member 300 or the second reinforcing member 400, the connected first reinforcing member 300 or the connected second reinforcing member 400 extends into the groove to increase the contact area between the connecting bracket 500 and the connected first reinforcing member 300 or the connected second reinforcing member 400, thereby improving the connection stability between the connecting bracket 500 and the corresponding first reinforcing member 300 or second reinforcing member 400.

[0083] In another embodiment, the connecting bracket 500 includes a wrapping portion that wraps around the outer wall of the first reinforcing member 300 or the second reinforcing member 400 connected to the connecting bracket 500. In one possible case, the wrapping portion includes an arcuate extension that forms a wrapping cavity on the connecting bracket 500 for wrapping the first reinforcing member 300 or the second reinforcing member 400 connected to the connecting bracket 500. Figure 3 As shown, in another possible scenario, the connecting bracket 500 includes a main bracket 530 and an auxiliary bracket 540. The main bracket 530 is provided with a groove 531, and the auxiliary bracket 540 is provided with a groove. After the main bracket 530 and the auxiliary bracket 540 are connected, the groove on the auxiliary bracket 540 communicates with the groove of one of the grooves 531 on the main bracket 530 to form a wrapping cavity, which is used to wrap the outer wall of the first reinforcing member 300 or the second reinforcing member 400 connected to the connecting bracket 500, so as to further increase the contact area of ​​the first reinforcing member 300 or the second reinforcing member 400 connected thereto.

[0084] exist Figures 1 to 3 In this structure, a connecting bracket 500 is connected to the first reinforcing member 300 and the second reinforcing member 400 respectively, with three connection points. The main bracket 530 is provided with a groove 531 corresponding to each of the three connection points, and an auxiliary bracket 540 is connected at one of the grooves 531 to form a wrapping part. Of course, the number of auxiliary brackets 540 can also be two or three, so as to form two or three wrapping parts in the connecting bracket 500.

[0085] Specifically, the main support 530 and the auxiliary support 540 are located on both sides of the first reference plane.

[0086] In one possible design, there are two connecting brackets 500. When the first reinforcing member 300 includes a first reinforcing rod 320 and a second reinforcing rod 330, one connecting bracket 500 connects the first reinforcing rod 320 and the reinforcing part 410 respectively; the other connecting bracket 500 connects the second reinforcing rod 330 and the reinforcing part 410 respectively. By adopting the above technical solution, on the one hand, by setting two connecting brackets 500, the vehicle body reinforcing structure increases the number of connection points with the vehicle body 100. On the other hand, by using two connecting brackets 500, the first reinforcing rod 320 and the reinforcing part 410 can be connected, and the second reinforcing rod 330 and the reinforcing part 410 can also be connected, thereby improving the structural stability of the vehicle body reinforcing structure.

[0087] In one possible design, one connecting bracket 500 is connected to the bent portion (first bent portion) of the first reinforcing rod 320, and is inclined towards the center of the reinforcing portion 410 and connected to the reinforcing portion 410; another connecting bracket 500 is connected to the bent portion (second bent portion) of the second reinforcing rod 330, and is inclined towards the center of the reinforcing portion 410 and connected to the reinforcing portion 410. The first bent portion and the second bent portion are on opposite sides of the cross-connection portion 310. For example, when both the first reinforcing member 300 and the second reinforcing member 400 extend in the left-right direction, the cross-connection portion 310 is located in the central region of the first reinforcing member 300, with one of the first bent portion and the second bent portion located in the left-side region of the cross-connection portion 310, and the other in the right-side region. If the first bent portion is located on the left and the second bent portion is located on the right, then the top end of the left-side connecting bracket 500 is connected to the first bent portion, and the bottom end slopes from left to right and extends downwards to connect to the reinforcing portion 410. The top of the connecting bracket 500 on the right side is connected to the second bend, and the bottom end slopes from right to left and extends downward to connect with the reinforcing part 410.

[0088] For example, such as Figure 2 As shown, the cross connection portion 310 formed by the intersection of the first reinforcing rod 320 and the second reinforcing rod 330 is located between the first bending portion and the second bending portion, and the distance between the projection of the cross connection portion 310 and the first bending portion on the horizontal plane is similar to or equal to the distance between the projection of the cross connection portion 310 and the second bending portion on the horizontal plane, that is, the middle part of the first reinforcing rod 320 and the middle part of the second reinforcing rod 330 intersect to form the cross connection portion 310.

[0089] Because the connecting bracket 500 is connected to the bent portion of the first reinforcing rod 320 and tilts towards the center of the reinforcing portion 410, the connecting bracket 500, a portion of the structure of the first reinforcing rod 320, and a portion of the structure of the reinforcing portion 410 form a triangular-like structure. Similarly, because another connecting bracket 500 is connected to the bent portion of the second reinforcing rod 330 and tilts towards the center of the reinforcing portion 410, the connecting bracket 500, a portion of the structure of the second reinforcing rod 330, and a portion of the structure of the reinforcing portion 410 also form a triangular-like structure, thereby improving the stability of the vehicle body reinforcement structure. Furthermore, in the projection of the vehicle body reinforcement structure onto the first reference plane, the two connecting brackets 500 divide the area enclosed by the outer edges of the projection of the vehicle body reinforcement structure onto the first reference plane into three parts of similar or equal area, resulting in a more balanced stress distribution and higher structural stability.

[0090] In one specific embodiment, the bent portion includes two bends, with a platform area formed between the two bends. The platform area facilitates the installation of the fixed connecting bracket 500. For example, if the bent portion is manufactured using a straight rod, the two ends of the straight rod are referred to as the first end and the second end, respectively. A bend is made between the first end and the second end to form the first bend, and a second bend is made between the first bend and the second end to form the second bend. The segment of the rod between the first bend and the second bend forms the platform area.

[0091] The first bend of the first reinforcing rod 320 includes the aforementioned platform area, and / or, the second bend of the second reinforcing rod 330 includes the aforementioned platform area. For example, the vehicle body reinforcement structure includes two connecting brackets 500, where the first bend of the first reinforcing rod 320 and the second bend of the second reinforcing rod 330 both include a platform area. The second connecting portion 520 of one connecting bracket 500 is connected to the platform area of ​​the first bend, and the second connecting portion 520 of the other connecting bracket 500 is connected to the platform area of ​​the second bend.

[0092] In one possible design, the second reinforcing rod 330 includes a first support rod 331 and a second support rod 332. The second support rod 332 includes a bent portion. The first support rod 331 and the second support rod 332 are respectively connected to both sides of the first reinforcing rod 320 to form a cross connection portion 310 with the first reinforcing rod 320. That is, the second reinforcing rod 330 includes a combined rod formed by the first support rod 331 and the second support rod 332. The combined rod is connected to the first reinforcing rod 320 to form a cross connection portion 310. The second reinforcing rod 330 may include one or more combined rods to connect with the first reinforcing rod 320 to form one or more cross connection portions 310. Specifically, the central axis of the first support rod 331 coincides with the extension line of the central axis of the second support rod 332, and the central axes of the first support rod 331, the second support rod 332, and the first reinforcing rod 320 are coplanar on the first reference plane W1. By connecting the independently set first support rod 331 and second support rod 332 of the second reinforcing rod 330 to both sides of the first reinforcing rod 320 respectively, while ensuring that they form a cross connection part 310 with the first reinforcing rod 320, the problem of interference between the first reinforcing rod 320 and the second reinforcing rod 330 when they cross connection can be avoided, which would result in a large thickness of the first reinforcing member 300, thus making the overall space occupied by the first reinforcing member 300 smaller.

[0093] In one embodiment, both the first reinforcing rod 320 and the second reinforcing rod 330 are hollow rods, thereby reducing the total weight of the first reinforcing member 300.

[0094] In one embodiment, a body reinforcement structure is installed on the underside of the vehicle body 100 and adjacent to the rear of the battery pack 200, so that the body reinforcement structure connects to the battery pack 200 from the rear, reinforcing the rear of the vehicle body 100 and improving the stability of the battery pack 200. Figures 1 to 4As shown, the vehicle body reinforcement structure includes a first reinforcing member 300, a second reinforcing member 400, and a connecting bracket 500. The second reinforcing member 400 includes a reinforcing portion 410, which is a crossbar. The left and right ends of the crossbar are connected to the left and right sides of the vehicle body 100 via first mounting seats 420, respectively. The first reinforcing member 300 includes a first reinforcing rod 320 and a second reinforcing rod 330. The second reinforcing rod 330 includes a first support rod 331 and a second support rod 332. The first support rod 331 and the second support rod 332 are connected to the two sides of the middle portion of the first reinforcing rod 320 via a third mounting seat 350 to form a cross connection portion 310. The left end of the first support rod 331 is connected to the left end of the first reinforcing rod 320 via a second mounting seat 340, and the right end of the second support rod 332 is connected to the right end of the first reinforcing rod 320 via another second mounting seat 340. The two second mounting seats 340 are respectively connected to the left and right sides of the vehicle body 100. The first support rod 331, the second support rod 332, the first reinforcing rod 320, and the crossbar are all hollow rods. The central axes of the first support rod 331, the second support rod 332, the first reinforcing rod 320, and the crossbar are all located on the same plane, i.e., the first reference plane. In the projection of the vehicle body reinforcing structure onto the first reference plane, the crossbar is located below the first support rod 331, the second support rod 332, and the first reinforcing rod 320. In the right region of the cross connection 310, the second support rod 332 has a second bend, and in the left region of the cross connection 310, the first reinforcing rod 320 has a first bend. This arrangement ensures that the projections of the first reinforcing rod 320 and the reinforcing part 410 onto the first reference plane are triangular, and the projections of the second reinforcing rod 330 and the reinforcing part 410 onto the first reference plane are also triangular. Furthermore, the structure of the first support rod 331 and the first reinforcing rod 320 located on the left side of the cross connection 310 forms a triangular structure, and the structure of the second support rod 332 and the first reinforcing rod 320 located on the right side of the cross connection 310 forms a triangular structure. There are two connecting brackets 500. One of the two connecting brackets 500 is connected to the first bend, the first support rod 331 and the crossbar, and the other is connected to the second bend, the structure of the first reinforcing rod 320 located on the right side of the cross connection 310 and the crossbar. Both connecting brackets 500 are inclined towards the middle of the crossbar from top to bottom. That is, the connecting bracket 500 on the left side is inclined to the lower right, while the connecting bracket 500 on the right side is inclined to the lower left. Both connecting brackets 500 include a main bracket 530 and an auxiliary bracket 540. The main bracket 530 on the left side has a groove 531 at each of the three connection points. The auxiliary bracket 540 is connected to the top of the main bracket 530 and mates with the uppermost groove 531 of the main bracket 530 to form a wrapping part. The wrapping part wraps around the outside of the first bend and covers at least about 3 / 4 of the circumferential outer area of ​​the first bend.The main bracket 530 on the right side has three corresponding grooves 531 at its connection points. The auxiliary bracket 540 is connected to the top of the main bracket 530, and mates with the uppermost groove 531 of the main bracket 530 to form a wrapping portion. This wrapping portion wraps around the outside of the second bend, covering at least about 3 / 4 of the circumferential outer area of ​​the second bend. The top of the connecting bracket 500 has a first connecting portion 510 for connecting to the battery pack 200, and the bottom of the connecting bracket 500 has a second connecting portion 520 for connecting to the bottom side of the vehicle body 100. The first connecting portion 510 is located on the side of the top of the first reinforcing member 300 facing the battery pack 200, and the second connecting portion 520 is located on the side of the bottom of the second reinforcing member 400 away from the battery pack 200. That is, the first connecting portion 510 and the second connecting portion 520 are located on opposite sides of the first reference surface W1.

[0095] This embodiment also provides a vehicle, including a vehicle body 100, a battery pack 200, and a vehicle body reinforcement structure as described in any of the preceding embodiments. Since the vehicle body reinforcement structure is provided next to the battery pack 200 of the vehicle body 100, and both the first and second reinforcement structures in the vehicle body reinforcement structure are connected to the vehicle body 100, the rigidity of the vehicle body 100 near the battery pack 200 is enhanced.

[0096] In one embodiment, at least one part of the vehicle body reinforcement structure is connected to the battery pack 200, so that the battery pack 200 is connected to the vehicle body 100 through the vehicle body reinforcement structure, thereby improving the stability of the battery pack 200.

[0097] In one embodiment, the battery pack 200 is mounted at the rear of the vehicle body 100 and located in the bottom region of the vehicle body 100. A vehicle body reinforcement structure is located behind the battery pack 200. The left and right ends of a first reinforcement member 300 are connected to the left and right sides of the vehicle body 100, respectively, and the left and right ends of a second reinforcement member 400 are also connected to the left and right sides of the vehicle body 100, respectively. The first and second reinforcement members 300 are connected to a connecting bracket 500, and both ends of the connecting bracket 500 are connected to the battery pack 200 and the vehicle body 100, respectively. Because the vehicle body reinforcement structure is connected to the battery pack 200 at the rear and to the vehicle body 100, it strengthens the structural strength of the area at the rear of the vehicle body 100 where the battery pack 200 is mounted, enhances the rigidity of the rear of the vehicle body 100, and also improves the stability of the battery pack 200.

[0098] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle body reinforcement structure, installed inside a vehicle, the vehicle comprising a vehicle body (100) and a battery pack (200), wherein both the battery pack (200) and the vehicle body reinforcement structure are located on the underside of the crossbeams of the vehicle body (100), characterized in that, The vehicle body reinforcement structure includes: A first reinforcing member (300) includes at least one cross-connection (310); the first reinforcing member (300) includes a first reinforcing rod (320) and a second reinforcing rod (330), the first reinforcing rod (320) and the second reinforcing rod (330) crossing to form the cross-connection (310); and, The second reinforcing member (400) includes at least one reinforcing portion (410) extending along the length direction of one side of the battery pack (200). The first reinforcing member (300) and the second reinforcing member (400) both extend along the length direction of the same side of the battery pack (200), and the two ends of the first reinforcing member (300) and the second reinforcing member (400) are respectively connected to the vehicle body (100). Furthermore, the vehicle body reinforcement structure is installed on the front or rear side of the battery pack (200); The vehicle body reinforcement structure is connected to the battery pack (200); The vehicle body reinforcement structure also includes a connecting bracket (500), at least one of the first reinforcing member (300) and the second reinforcing member (400) is connected to the battery pack (200) and the vehicle body (100) through the connecting bracket (500); One end of the connecting bracket (500) has a first connecting part (510) and the other end has a second connecting part (520). The first connecting part (510) is connected to the battery pack (200), and the second connecting part (520) is connected to the vehicle body (100). The first connecting part (510) is located on one side of the first reference surface, and the second connecting part (520) is located on the other side of the first reference surface. The first reference surface is a plane formed by the central axis of the multiple rod-shaped structures of the cross connecting part (310).

2. The vehicle body reinforcement structure as described in claim 1, characterized in that, The central axis of the first reinforcing rod (320), the central axis of the second reinforcing rod (330), and the central axis of the reinforcing part (410) are coplanar on the first reference plane.

3. The vehicle body reinforcement structure as described in claim 1, characterized in that, The connecting bracket (500) includes a wrapping portion that wraps around the outer wall of the first reinforcing member (300) or the second reinforcing member (400) connected to the connecting bracket (500).

4. The vehicle body reinforcement structure as described in claim 1, characterized in that, The first reinforcing rod (320) includes a first bend, and the first reinforcing rod (320) and the reinforcing portion (410) together form a triangular structure; and / or, The second reinforcing rod (330) includes a second bend, and the second reinforcing rod (330) and the reinforcing part (410) together form a triangular structure.

5. The vehicle body reinforcement structure as described in claim 1, characterized in that, One end of the first reinforcing rod (320) is connected to one end of the second reinforcing rod (330) to form a first fixing part. The first reinforcing rod (320) and the second reinforcing rod (330) form a triangular structure between the first fixing part and the cross connection part (310); and / or, The other end of the first reinforcing rod (320) is connected to the other end of the second reinforcing rod (330) to form a second fixing part. The first reinforcing rod (320) and the second reinforcing rod (330) form a triangular structure between the second fixing part and the cross connection part (310).

6. The vehicle body reinforcement structure as described in claim 1, characterized in that, There are two connecting brackets (500). One connecting bracket (500) is connected to the first bent portion of the first reinforcing rod (320) and is inclined towards the middle of the reinforcing portion (410) and connected to the reinforcing portion (410). The other connecting bracket (500) is connected to the second bent portion of the second reinforcing rod (330) and is inclined towards the middle of the reinforcing portion (410) and connected to the reinforcing portion (410). The first bent portion and the second bent portion are on opposite sides of the cross connection portion (310).

7. The vehicle body reinforcement structure as described in claim 1, characterized in that, The second reinforcing rod (330) includes a first support rod (331) and a second support rod (332), the first support rod (331) and the second support rod (332) being connected to both sides of the first reinforcing rod (320) to form the cross connection part (310) with the first reinforcing rod (320).

8. A vehicle comprising a vehicle body (100) and a battery pack (200) installed within the vehicle body (100), characterized in that, The vehicle also includes a body reinforcement structure as described in any one of claims 1-7.

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