Battery pack connection structure with vehicle body and vehicle

Abstract

This application provides a connection structure between a battery pack and a vehicle body, and a vehicle in general. The vehicle body includes a left longitudinal beam, a right longitudinal beam, and a crossbeam. The connection structure between the battery pack and the vehicle body includes at least one first connector. The first connector includes a first inclined plate and a second inclined plate. The extended surface of the first inclined plate closest to the right longitudinal beam intersects with the right longitudinal beam; the extended surface of the second inclined plate closest to the left longitudinal beam intersects with the left longitudinal beam. This structure can reduce the out-of-plane deformation of the first and second inclined plates, thereby ensuring good stability of the first and second inclined plates and thus ensuring the stability of the connection between the battery pack and the vehicle body.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, and more specifically, relates to a connection structure between a battery pack and a vehicle body, and a vehicle. Background Technology

[0002] A vehicle's body typically consists of two longitudinal beams (left and right) and a crossbeam connecting them. Currently, the rear end of the battery pack in a vehicle is generally connected to the body crossbeam using two rectangular connectors. The front side of the rectangular connector connects to the battery pack, and the top of the connector is typically bolted to the crossbeam. However, in this structure, the side plates of the rectangular connector are nearly perpendicular to the forces acting from the longitudinal beams, making the connection between the crossbeam and the rectangular connector prone to out-of-plane deformation. Summary of the Invention

[0003] The purpose of this application is to provide a connection structure between a battery pack and a vehicle body, and a vehicle in general, to solve the problem that out-of-plane deformation easily occurs at the connection point when the battery pack and the vehicle body beam are connected by rectangular connectors in related technologies.

[0004] To achieve the above objectives, the technical solution adopted in this application embodiment is: to provide a connection structure between a battery pack and a vehicle body, wherein the vehicle body includes a left longitudinal beam, a right longitudinal beam and a cross beam, the left longitudinal beam and the right longitudinal beam are respectively connected to both ends of the cross beam, and the connection structure between the battery pack and the vehicle body includes at least one first connector for connecting the battery pack and the cross beam;

[0005] The first connector includes a first inclined plate and a second inclined plate spaced apart in the left-right direction. The first inclined plate is located on the side of the second inclined plate closer to the right longitudinal beam. Both the first inclined plate and the second inclined plate are connected to the crossbeam at one end and to the battery pack at the other end.

[0006] The extended surface of the first inclined plate closest to the right longitudinal beam intersects the right longitudinal beam; the extended surface of the second inclined plate closest to the left longitudinal beam intersects the left longitudinal beam.

[0007] By adopting the above scheme, the extended surface of the rightmost first inclined plate intersects with the right longitudinal beam, which makes the force from the right longitudinal beam and the rightmost first inclined plate approximately on the same plane. This reduces the out-of-plane deformation of the first inclined plate and causes the force from the right longitudinal beam to produce a near-in-plane deformation on the rightmost first inclined plate, thus ensuring good stability of the first inclined plate. Similarly, the extended surface of the leftmost second inclined plate intersects with the left longitudinal beam, which makes the force from the left longitudinal beam and the leftmost second inclined plate approximately on the same plane. This reduces the out-of-plane deformation of the second inclined plate and causes the force from the left longitudinal beam to produce a near-in-plane deformation on the leftmost second inclined plate, thus ensuring good stability of the second inclined plate. This, in turn, ensures the stability of the connection between the battery pack and the vehicle body.

[0008] In one alternative embodiment, the longitudinal section of the first connector is approximately triangular;

[0009] From the crossbeam to the battery pack: the length of the first connector gradually decreases along the left-right direction.

[0010] By adopting the above scheme, the lateral length of the first connector is gradually reduced from the crossbeam to the battery pack, so that the first connector is triangular in shape when viewed longitudinally, making the first connector less prone to deformation and the structure more stable.

[0011] In one alternative embodiment, the number of the first connectors is at least two, and two adjacent first connectors are spaced apart at one end near the crossbeam.

[0012] By adopting the above solution, setting at least two first connectors can reduce the size and weight of each first connector, making it easier to process and manufacture, and reducing the weight of the vehicle body. Furthermore, the two adjacent first connectors are spaced apart at the ends near the crossbeam, which allows the two first connectors to be closer to the left and right ends of the crossbeam and the battery pack, so as to connect the left and right sides of the battery pack with the left and right ends of the crossbeam. This makes the force on the battery pack and the crossbeam more even, and thus connects the battery pack and the crossbeam more stably.

[0013] In one alternative embodiment, the number of the first connectors is at least two, and two adjacent first connectors are adjacent to one end of the crossbeam.

[0014] By adopting the above solution, setting at least two first connectors can reduce the size and weight of each first connector, making it easier to process and manufacture, and reducing the weight of the vehicle body; and the two adjacent first connectors are adjacent at the ends near the crossbeam, so that the gap between the two first connectors can form a triangular shape, which can not only provide a certain installation space, but also improve the stability of the structure.

[0015] In an alternative embodiment, the first connector is symmetrically distributed about the cross-section passing through the center of the beam along its length.

[0016] By adopting the above scheme, the first connecting component is symmetrically arranged on the bottom side of the crossbeam, resulting in a more balanced force distribution, which can improve the stability of the structure and ensure the structural strength and stability of the vehicle body.

[0017] In an alternative embodiment, the first connector includes a first bottom plate for fitting and fixing to the bottom surface of the crossbeam, the first bottom plate extending from one end of the first inclined plate near the crossbeam toward a direction away from the second inclined plate;

[0018] And / or, the first connector includes a second bottom plate for fitting and fixing to the bottom surface of the crossbeam, the second bottom plate extending from one end of the second inclined plate near the crossbeam toward a direction away from the first inclined plate.

[0019] By setting a first bottom plate, the contact area between the first connector and the crossbeam can be increased, thereby increasing the load-bearing area of ​​the crossbeam, distributing the stress points, reducing stress concentration, and improving the stability of the structure. Similarly, by setting a second bottom plate, the contact area between the first connector and the crossbeam can be increased, thereby increasing the load-bearing area of ​​the crossbeam, distributing the stress points, reducing stress concentration, and improving the stability of the structure.

[0020] In an optional embodiment, the first connector further includes a first vertical plate, the left and right sides of which are respectively connected to the front side of the second inclined plate and the front side of the first inclined plate.

[0021] And / or, the first connector further includes a second vertical plate, the left and right sides of which are respectively connected to the rear side of the second inclined plate and the rear side of the first inclined plate.

[0022] By setting a first vertical plate and connecting its left and right sides to the front sides of the second and first inclined plates respectively, the structural strength of the first connector can be increased, resulting in a more stable connection between the battery pack and the crossbeam, and thus increasing the structural strength of the vehicle body. Similarly, by setting a second vertical plate and connecting its left and right sides to the rear sides of the second and first inclined plates respectively, the structural strength of the first connector can be increased, resulting in a more stable connection between the battery pack and the crossbeam, and thus increasing the structural strength of the vehicle body.

[0023] In an optional embodiment, the first connector further includes a first bonding plate for attaching and fixing to the front side of the crossbeam, the lower side of the first bonding plate being adjacent to the first vertical plate, and the first vertical plate and the first bonding plate being on the same plane.

[0024] And / or, the first connector further includes a second bonding plate for attaching and fixing to the rear side of the crossbeam, the lower side of the second bonding plate being adjacent to the second vertical plate, and the second vertical plate and the second bonding plate being on the same plane.

[0025] By placing the first vertical plate and the first bonding plate on the same plane, not only is manufacturing easier, but the force exerted by the front side of the crossbeam on the first connector is also transmitted through the first bonding plate to the first vertical plate. This force is approximately in the same plane as the first vertical plate, resulting in near-in-plane deformation of the first vertical plate. This ensures good stability of the first vertical plate, and consequently, the stability of the first connector. Similarly, by placing the second vertical plate and the second bonding plate on the same plane, manufacturing is easier. Furthermore, the force exerted by the rear side of the crossbeam on the first connector is transmitted through the second bonding plate to the second vertical plate. This force is approximately in the same plane as the second vertical plate, resulting in near-in-plane deformation of the second vertical plate. This ensures good stability of the second vertical plate, and consequently, the stability of the first connector.

[0026] In an optional embodiment, the first connector further includes a first bonding plate for fitting and fixing to the front side of the crossbeam. The lower side of the first bonding plate has a first bent portion that bends from the bottom of the crossbeam to the front side. The first bent portion is connected to the first vertical plate and is used to fit and fix to the bottom and front side of the crossbeam.

[0027] And / or, the first connector further includes a second bonding plate for fitting and fixing to the rear side of the crossbeam, the lower side of the second bonding plate having a second bend portion that bends from the bottom of the crossbeam to the rear side, the second bend portion being connected to the second vertical plate, the second bend portion being used for fitting and fixing to the bottom and rear side of the crossbeam.

[0028] By providing a first bend on the underside of the first bonding plate, the first bend can be fitted and fixed to the bottom to front side of the crossbeam, thereby increasing the contact area between the first connector and the crossbeam, increasing the load-bearing area of ​​the crossbeam, distributing the stress points, reducing stress concentration, and improving the stability of the structure. Similarly, by providing a second bend on the underside of the second bonding plate, the second bend can be fitted and fixed to the bottom to rear side of the crossbeam, thereby increasing the contact area between the first connector and the crossbeam, increasing the load-bearing area of ​​the crossbeam, distributing the stress points, reducing stress concentration, and improving the stability of the structure.

[0029] In an optional embodiment, when the first connector includes a first vertical plate and the distance between the first vertical plate and the rear side of the battery pack is ≤ a preset distance, the lower end of the first vertical plate is connected to the rear side of the battery pack.

[0030] Alternatively, when the first connector includes a first vertical plate and the distance between the first vertical plate and the rear side of the battery pack is greater than a preset distance, the connection structure between the battery pack and the vehicle body further includes a second connector, the lower end of the first vertical plate is connected to the second connector, and the second connector is connected to the rear side of the battery pack.

[0031] By adopting the above solution, when the distance between the first vertical plate and the rear side of the battery pack is less than or equal to a preset distance, the first connector can be directly fixed to the battery pack, which simplifies the structure, facilitates installation, reduces costs, and improves the structural strength of the vehicle body. When the distance between the first vertical plate and the rear side of the battery pack is greater than the preset distance, the first connector and the battery pack are connected by a second connector, improving the adaptability of the connection structure to battery packs of different sizes and vehicle bodies of different sizes.

[0032] In an alternative embodiment, the first connector includes a cavity structure that is open at one end near the crossbeam.

[0033] By adopting the above solution and setting a cavity structure, the weight of the first connecting part can be reduced, thereby reducing the weight of the vehicle body; and setting the end of the cavity structure near the crossbeam to be open makes it easier to process and manufacture.

[0034] Another objective of this application is to provide a vehicle, including a battery pack, a vehicle body, and a connection structure between the battery pack and the vehicle body as described in any of the above embodiments. The vehicle body includes a left longitudinal beam, a right longitudinal beam, and a cross beam. The left longitudinal beam and the right longitudinal beam are respectively connected to both ends of the cross beam. The battery pack is connected to the cross beam through a first connector.

[0035] The aforementioned vehicle uses the battery pack and vehicle body connection structure described in the above embodiment, which can reduce out-of-plane deformation of the connection structure, ensure good structural strength and stability of the connection structure, and thus ensure that the rear end of the battery pack is well fixed to the vehicle body crossbeam, thereby improving the structural strength and stability of the vehicle. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies 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.

[0037] Figure 1 This is a three-dimensional structural diagram of the connection structure between the battery pack and the vehicle body provided in Embodiment 1 of this application, showing the connection between the battery pack and the crossbeam in the rear view direction.

[0038] Figure 2 This is a three-dimensional structural diagram of the connection structure between the battery pack and the vehicle body provided in Embodiment 1 of this application, showing the connection between the battery pack and the crossbeam in the front view direction.

[0039] Figure 3 This is a front view diagram of the connection structure between the battery pack and the vehicle body provided in Embodiment 1 of this application, showing the connection between the battery pack and the crossbeam in the front view direction.

[0040] Figure 4 This is a front view diagram of the connection structure between the battery pack and the vehicle body provided in Embodiment 1 of this application, showing the connection between the battery pack and the crossbeam in the left-side view direction.

[0041] Figure 5 A three-dimensional structural diagram of the combination of the first connector and the second connector 102 provided in Embodiment 1 of this application;

[0042] Figure 6 This is a side view of the combination of the first connector and the second connector 102 provided in Embodiment 1 of this application;

[0043] Figure 7 A three-dimensional structural diagram of the first connector provided in Embodiment 1 of this application. Figure 1 ;

[0044] Figure 8 A three-dimensional structural diagram of the first connector provided in Embodiment 1 of this application. Figure 2 ;

[0045] Figure 9 A three-dimensional structural diagram of the first connector provided in Embodiment 1 of this application. Figure 3 ;

[0046] Figure 10 A bottom view of the first connector provided in Embodiment 1 of this application;

[0047] Figure 11 This is a front view diagram of the connection structure between the battery pack and the vehicle body provided in Embodiment 2 of this application, showing the connection between the battery pack and the crossbeam in the left-side view direction.

[0048] Figure 12 This is a front view diagram of the connection structure between the battery pack and the vehicle body provided in Embodiment 3 of this application, showing the connection between the battery pack and the crossbeam in the rear view direction.

[0049] Figure 13 This is a front view diagram of the connection structure between the battery pack and the vehicle body provided in Embodiment 4 of this application, showing the connection between the battery pack and the crossbeam in the rear view direction.

[0050] Figure 14 This is a front view diagram of the connection structure between the battery pack and the vehicle body provided in Embodiment 5 of this application, showing the connection between the battery pack and the crossbeam in the rear view direction.

[0051] The main markings in the attached figures are as follows:

[0052] 10- Connection structure between battery pack and vehicle body;

[0053] 101-First connector; 1010-Cavity structure; 11-Base plate; 121-First inclined plate; 122-Second inclined plate; 131-First vertical plate; 132-Second vertical plate; 141-First bonding plate; 142-Second bonding plate; 151-First bending part; 152-Second bending part; 161-First bottom bonding plate; 162-Second bottom bonding plate;

[0054] 102 - Second connector;

[0055] 21-Crossbeam; 211-Right support; 212-Left support; 22-Battery pack; 231-Right longitudinal beam; 232-Left longitudinal beam. Detailed Implementation

[0056] 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.

[0057] 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.

[0058] 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 expressly specified. "Several" means one or more, unless otherwise expressly specified.

[0059] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0060] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In this specification, references to "one embodiment," "some embodiments," or simply "embodiment" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. Furthermore, in one or more embodiments, specific features, structures, or characteristics may be combined in any suitable manner.

[0062] Glossary: ​​To facilitate understanding and description of this application, the terms used in this application are explained.

[0063] Out-of-plane deformation: Deformation that occurs when the direction of force is perpendicular to the surface to which the force is applied. The stability of the object subjected to this force is very low, close to zero. For sheet metal, when the direction of force is perpendicular to the plane in which the sheet metal is located, its stability is very low, close to zero, and it is prone to out-of-plane deformation.

[0064] In-plane deformation: Deformation that occurs when the direction of force is parallel to the surface of the object subjected to the force. The stability of the object subjected to the force is extremely high, approaching infinity. For sheet metal, when the direction of force is parallel to the plane on which the sheet metal lies, its stability is high, approaching infinity, and it is prone to in-plane deformation.

[0065] For ease of description, the following definitions apply: the front of the vehicle is considered "forward," the rear is considered "rear," and for a user inside the vehicle facing forward, the left hand is considered "left," and the right hand is considered "right." The top of the vehicle is considered "upward," and the bottom is considered "downward." Please refer to the following for further information. Figure 1 and Figure 2Based on this, the orientations of the vehicle body as a whole, including crossbeams, longitudinal beams, connecting parts, and battery pack, are defined as "up," "down," "front," "rear," "left," and "right." Furthermore, the following are defined: the front-to-back direction is longitudinal, the left-to-right direction is lateral, and the up-and-down direction is vertical; longitudinal, lateral, and vertical directions are mutually perpendicular. A section perpendicular to the vertical direction is a vertical section, and its projection onto a plane perpendicular to the vertical direction is a vertical projection. A section perpendicular to the front-to-back direction (longitudinal) is a longitudinal section, and its projection onto a plane perpendicular to the longitudinal direction is a longitudinal projection. A section perpendicular to the left-to-right direction (lateral) is a cross section, and its projection onto a plane perpendicular to the lateral direction is a lateral projection. Additionally, the following are defined: looking from front to back is the forward view direction, looking from back to front is the rear view direction, looking from left to right is the left view direction, looking from right to left is the right view direction, looking from top to bottom is the top view direction, and looking from bottom to top is the bottom view direction.

[0066] Please see Figure 1 , Figure 2 and Figure 10 The connection structure 10 between the battery pack and the vehicle body provided in this application will now be described. The connection structure 10 between the battery pack and the vehicle body is used to connect the battery pack 22 to the vehicle body so that the battery pack 22 can be installed in the vehicle body.

[0067] The vehicle body includes a left longitudinal beam 232, a right longitudinal beam 231, and a crossbeam 21. The left longitudinal beam 232 and the right longitudinal beam 231 are connected to both ends of the crossbeam 21, respectively. In use, the rear end of the battery pack 22 is connected to the crossbeam 21 to support the rear end of the battery pack 22. Specifically, the battery pack 22 is connected to the crossbeam 21 of the vehicle body through the battery pack-vehicle connection structure 10.

[0068] The battery pack and vehicle body connection structure 10 includes a first connector 101. The first connector 101 is used to connect the battery pack 22 and the crossbeam 21. That is, in use, the lower end of the first connector 101 is connected to the battery pack 22, and the upper end of the first connector 101 is connected to the crossbeam 21 to connect the battery pack 22 and the crossbeam 21. In other words, the battery pack 22 is connected to the crossbeam 21 through the first connector 101.

[0069] The first connector 101 includes a first inclined plate 121 and a second inclined plate 122. In use, the first inclined plate 121 and the second inclined plate 122 are spaced apart in the left-right direction (i.e., laterally), and the first inclined plate 121 is located on the side of the second inclined plate 122 closer to the right longitudinal beam 231. That is, the first inclined plate 121 is located to the right of the second inclined plate 122, and the second inclined plate 122 is located to the left of the first inclined plate 121. One end of the first inclined plate 121 is connected to the crossbeam 21, and the other end of the first inclined plate 121 is connected to the battery pack 22. Similarly, one end of the second inclined plate 122 is connected to the crossbeam 21, and the other end of the second inclined plate 122 is connected to the battery pack 22, so that the first connector 101 connects the crossbeam 21 and the battery pack 22, thereby connecting the battery pack 22 to the crossbeam 21 through the first connector 101.

[0070] Please refer to the following: Figure 1 and Figure 13 The extended surface of the first inclined plate 121 closest to the right longitudinal beam 231 intersects with the right longitudinal beam 231. In other words, the surface of the first inclined plate 121 closest to the right longitudinal beam 231 intersects with the right longitudinal beam 231. This makes the first inclined plate 121 closest to the right longitudinal beam 231 and the force F1 from the right longitudinal beam 231 approximately on the same plane. In other words, the first inclined plate 121 adjacent to the right longitudinal beam 231 and the force F1 from the right longitudinal beam 231 are approximately on the same plane. Thus, the deformation of the first inclined plate 121 caused by the force F1 from the right longitudinal beam 231 is in-plane deformation or nearly in-plane deformation, which can reduce the out-of-plane deformation of the first inclined plate 121, so as to ensure good stability of the first inclined plate 121, and thus more stably connect the battery pack 22 and the crossbeam 21, ensuring the structural strength of the vehicle body. Here, "approximately" means that a certain degree of error is allowed. The phrase "the first inclined plate 121 adjacent to the right longitudinal beam 231 and the force F1 from the right longitudinal beam 231 are approximately on the same plane" means that the force F1 from the right longitudinal beam 231 and the first inclined plate 121 are located on the same plane. However, certain errors in processing and installation are allowed. In other words, due to processing and installation errors, the force F1 from the right longitudinal beam 231 and the first inclined plate 121 may be on the same plane during the design phase, but after actual installation, they may not be perfectly aligned. There will often be some error. Of course, the closer the first inclined plate 121 adjacent to the right longitudinal beam 231 and the force F1 from the right longitudinal beam 231 are to being on the same plane, the more in-plane the deformation caused by the force F1 from the right longitudinal beam 231 on the first inclined plate 121 will be, and the better the stability of the first inclined plate 121 will be.

[0071] It is understandable that the intersection of the extended surface of the inclined plate with the longitudinal beam can mean either that the inclined plate itself is directly connected to the longitudinal beam, or that the plane on which the inclined plate is located intersects with the longitudinal beam, in which case the inclined plate itself is not directly connected to the longitudinal beam.

[0072] Similarly, please refer to the following: Figure 1 and Figure 13 The extended surface of the second inclined plate 122 closest to the left longitudinal beam 232 intersects with the left longitudinal beam 232. In other words, the surface of the second inclined plate 122 closest to the left longitudinal beam 232 intersects with the left longitudinal beam 232. This makes the second inclined plate 122 closest to the left longitudinal beam 232 and the force F2 from the left longitudinal beam 232 approximately on the same plane. In other words, the second inclined plate 122 adjacent to the left longitudinal beam 232 and the force F2 from the left longitudinal beam 232 are approximately on the same plane. Thus, the deformation of the second inclined plate 122 caused by the force F2 from the left longitudinal beam 232 is in-plane deformation or nearly in-plane deformation, which can reduce the out-of-plane deformation of the second inclined plate 122, so as to ensure the good stability of the second inclined plate 122, and thus more stably connect the battery pack 22 and the crossbeam 21, ensuring the structural strength of the vehicle body. Here, "approximately" means that a certain degree of error is allowed. The phrase "the second inclined plate 122 adjacent to the left longitudinal beam 232 and the force F2 from the left longitudinal beam 232 are approximately on the same plane" means that the force F2 from the left longitudinal beam 232 and the second inclined plate 122 are located on the same plane. However, certain errors in processing and installation are allowed. In other words, due to processing and installation errors, the force F2 from the left longitudinal beam 232 and the second inclined plate 122 may be on the same plane during the design phase, but after actual installation, they may not be perfectly aligned. There will often be some error. Of course, the closer the second inclined plate 122 adjacent to the left longitudinal beam 232 and the force F2 from the left longitudinal beam 232 are to being on the same plane, the more likely the deformation of the second inclined plate 122 caused by the force F2 from the left longitudinal beam 232 is in-plane deformation, and the better the stability of the second inclined plate 122.

[0073] Compared with the prior art, the battery pack and vehicle body connection structure 10 provided in this application embodiment connects the rear end of the battery pack 22 and the crossbeam 21 by setting a first connector 101. The force F1 from the right longitudinal beam 231 is approximately on the same plane as the rightmost first inclined plate 121, which reduces the out-of-plane deformation of the first inclined plate 121 and causes the force F1 from the right longitudinal beam 231 to produce a near-in-plane deformation of the rightmost first inclined plate 121, thus ensuring good stability of the first inclined plate 121. Similarly, the force F2 from the left longitudinal beam 232 is approximately on the same plane as the leftmost second inclined plate 122, which reduces the out-of-plane deformation of the second inclined plate 122 and causes the force F2 from the left longitudinal beam 232 to produce a near-in-plane deformation of the leftmost second inclined plate 122, thus ensuring good stability of the second inclined plate 122; thereby ensuring the stability of the connection between the battery pack 22 and the vehicle body.

[0074] In one embodiment, see Figures 1 to 3 The right longitudinal beam 231 is connected to the right end of the cross beam 21 via the right support member 211. In other words, the right end of the cross beam 21 is equipped with the right support member 211, which is connected to the right longitudinal beam 231, thus connecting the right longitudinal beam 231 to the right end of the cross beam 21. The first inclined plate 121 closest to the right longitudinal beam 231 is connected to the right support member 211, and the surface of the first inclined plate 121 closest to the right longitudinal beam 231 intersects with the right longitudinal beam 231.

[0075] Understandably, please refer to Figure 12 Alternatively, the first inclined plate 121 closest to the right longitudinal beam 231 can be directly connected to the right longitudinal beam 231.

[0076] Of course, the first inclined plate 121 closest to the right longitudinal beam 231 can be spaced apart from the right longitudinal beam 231, and only the extended surface of the first inclined plate 121 closest to the right longitudinal beam 231 intersects with the right longitudinal beam 231. That is to say, when the connection position of the first inclined plate 121 closest to the right longitudinal beam 231 and the battery pack 22 is determined, the first inclined plate 121 closest to the right longitudinal beam 231 is located at... Figure 12 Between the dashed lines A1 and A2, the extended surfaces of the first inclined plate 121 closest to the right longitudinal beam 231 all intersect with the right longitudinal beam 231.

[0077] In one embodiment, see Figures 1 to 3The left longitudinal beam 232 is connected to the left end of the cross beam 21 via the left support member 212. In other words, the left end of the cross beam 21 is equipped with the left support member 212, which is connected to the left longitudinal beam 232, thus connecting the left longitudinal beam 232 to the left end of the cross beam 21. The second inclined plate 122, closest to the left longitudinal beam 232, is connected to the left support member 212, and the surface of the second inclined plate 122 closest to the left longitudinal beam 232 intersects with the left longitudinal beam 232.

[0078] Understandably, please refer to Figure 12 Alternatively, the second inclined plate 122, which is closest to the left longitudinal beam 232, can be directly connected to the left longitudinal beam 232.

[0079] Of course, the second inclined plate 122 closest to the left longitudinal beam 232 can be spaced apart from the left longitudinal beam 232, and only the extended surface of the second inclined plate 122 closest to the left longitudinal beam 232 intersects with the left longitudinal beam 232. That is to say, when the connection position of the second inclined plate 122 closest to the left longitudinal beam 232 and the battery pack 22 is determined, the second inclined plate 122 closest to the left longitudinal beam 232 is located at... Figure 12 Between the dashed line B1 and the dashed line B2, the extended surface of the second inclined plate 122, which is closest to the left longitudinal beam 232, intersects with the left longitudinal beam 232.

[0080] In one embodiment, see Figures 1 to 3The longitudinal section of the first connector 101 is roughly triangular, meaning it appears triangular from a longitudinal perspective. From the crossbeam 21 to the battery pack 22, the length of the first connector 101 gradually decreases in the left-right direction. Specifically, the end of the first connector 101 closest to the crossbeam 21 is longer, making it the wide end; while the end closest to the battery pack 22 is shorter, making it the narrow end. The narrow end of the first connector 101 connects to the battery pack 22, and the wide end connects to the crossbeam 21, increasing the contact area with the crossbeam 21, thus increasing the load-bearing area of ​​the crossbeam 21 and improving structural strength. Furthermore, the roughly triangular shape of the first connector 101 makes it less prone to deformation and more stable, enhancing its structural stability and strength, thereby stably supporting the battery pack 22 on the crossbeam 21. Here, "triangular-like" refers to a shape that is not a standard triangle, but roughly triangular, allowing the apex (equivalent to the vertex of a standard triangle) to have a certain width. Setting the first connector 101 in a triangular-like shape also facilitates the connection of its narrow end to the battery pack 22. It is understandable that the reason for providing a certain width at the apex of this triangular-like shape is to reserve a connection point with the battery pack. To make the structure of the first connector 101 more closely resemble a standard triangle, the ratio of the vertical cross-section of the apex (narrow end) to the vertical cross-section of the bottom (wide end) of the first connector 101 can be minimized.

[0081] In one embodiment, see Figures 1 to 3 There are two first connectors 101, and the two first connectors 101 are spaced apart at one end near the crossbeam 21. Having at least two first connectors 101 reduces the size and weight of each first connector 101, facilitating manufacturing and reducing vehicle weight. The spaced-apart arrangement of the two adjacent first connectors 101 near the crossbeam 21 allows them to be closer to the left and right ends of the crossbeam 21 and the battery pack 22, connecting the left and right sides of the battery pack 22 to the left and right ends of the crossbeam 21. This results in a more even distribution of force on the battery pack 22 and the crossbeam 21, providing more stable support for the battery pack 22 on the crossbeam 21.

[0082] In one embodiment, see Figure 1 , Figure 7 and Figure 9The first connecting member 101 includes a first bottom plate 161, which extends from the end of the first inclined plate 121 near the crossbeam 21 away from the second inclined plate 122. In other words, the first bottom plate 161 extends from the upper end of the first inclined plate 121 away from the second inclined plate 122. In use, the first bottom plate 161 is fitted and fixed to the bottom surface of the crossbeam 21. This increases the contact area between the first connecting member 101 and the crossbeam 21, thereby increasing the load-bearing area of ​​the crossbeam 21, dispersing the stress points, reducing stress concentration, and improving the stability of the structure.

[0083] In one embodiment, see Figure 1 , Figure 7 and Figure 9 The first connector 101 includes a second bottom plate 162, which extends from the end of the second inclined plate 122 near the crossbeam 21 away from the first inclined plate 121. In other words, the second bottom plate 162 extends from the upper end of the second inclined plate 122 away from the first inclined plate 121. In use, the second bottom plate 162 is fitted and fixed to the bottom surface of the crossbeam 21. This increases the contact area between the first connector 101 and the crossbeam 21, thereby increasing the load-bearing area of ​​the crossbeam 21, dispersing the stress points, reducing stress concentration, and improving the stability of the structure.

[0084] In one embodiment, the first base plate 161 is formed by extending from the corresponding first inclined plate 121, that is, the first base plate 161 and the corresponding first inclined plate 121 are integrally formed. Optionally, the first base plate 161 may also be formed independently from the corresponding first inclined plate 121 and then welded together.

[0085] In one embodiment, the second bottom plate 162 is formed by extending from the corresponding second inclined plate 122, that is, the second bottom plate 162 and the corresponding second inclined plate 122 are integrally formed. Optionally, the second bottom plate 162 may also be formed independently of the corresponding second inclined plate 122 and then welded together.

[0086] In one embodiment, see Figures 7 to 9 The first connector 101 includes both a first bottom plate 161 and a second bottom plate 162 to increase the contact area between the first connector 101 and the crossbeam 21, thereby increasing the load-bearing area of ​​the crossbeam 21, dispersing the stress points, reducing stress concentration, and improving the stability of the structure. Understandably, the first connector 101 may also include only the first bottom plate 161 to simplify the structure. Of course, the first connector 101 may also include only the second bottom plate 162 to simplify the structure.

[0087] In one embodiment, see Figure 3 , Figure 6 and Figure 10 The first connector 101 also includes a first vertical plate 131. The right side of the first vertical plate 131 is connected to the front side of the first inclined plate 121, and the left side of the first vertical plate 131 is connected to the front side of the second inclined plate 122, so that the first vertical plate 131 is located on the front side of the first connector 101. Setting the first vertical plate 131 and connecting the left and right sides of the first vertical plate 131 to the front side of the second inclined plate 122 and the front side of the first inclined plate 121 respectively can increase the structural strength of the first connector 101 and improve the stability of the first connector 101, so as to more stably connect the battery pack 22 and the crossbeam 21 and increase the structural strength of the vehicle body.

[0088] In one embodiment, see Figure 2 , Figure 7 and Figure 10 The first connecting member 101 includes a first bonding plate 141. In use, the first bonding plate 141 is used to bond and fix with the front side of the crossbeam 21. This not only facilitates the connection and fixation of the first connecting member 101 and the crossbeam 21, but also allows the force exerted by the front side of the crossbeam 21 on the first connecting member 101 to be mainly applied to the first bonding plate 141, causing near-in-plane deformation of the first bonding plate 141. This ensures good stability of the first bonding plate 141, thereby ensuring the stability of the first connecting member 101.

[0089] In one embodiment, the first vertical plate 131 is disposed adjacent to the first bonding plate 141 to increase the structural strength of the first connector 101 and improve the stability of the first connector 101.

[0090] In one embodiment, see Figure 1 , Figure 2 and Figure 6 The lower side of the first bonding plate 141 has a first bent portion 151, which is used to be bonded and fixed to the crossbeam 21. When the first connecting member 101 is connected to the crossbeam 21, the first bent portion 151 bends from the bottom surface of the crossbeam 21 toward the front surface of the crossbeam 21, so that the first bent portion 151 is bonded and fixed to the corresponding areas on the bottom surface and the front surface of the crossbeam 21, thereby increasing the contact area between the first connecting member 101 and the crossbeam 21, thereby increasing the stress-bearing area of ​​the crossbeam 21, dispersing the stress points, reducing stress concentration, and improving the stability of the structure.

[0091] In one embodiment, the first vertical plate 131 is connected to the first bending portion 151, that is, the first vertical plate 131 transitions to the first bonding plate 141 via the first bending portion 151 to ensure good structural strength on the front side of the first connector 101.

[0092] In one embodiment, see Figure 3 , Figure 6 and Figure 10 The first connector 101 also includes a second vertical plate 132. The right side of the second vertical plate 132 is connected to the rear side of the first inclined plate 121, and the left side of the second vertical plate 132 is connected to the rear side of the second inclined plate 122, so that the second vertical plate 132 is located on the rear side of the first connector 101. By setting the second vertical plate 132 and connecting the left and right sides of the second vertical plate 132 to the rear side of the second inclined plate 122 and the rear side of the first inclined plate 121 respectively, the structural strength of the first connector 101 can be increased and the stability of the first connector 101 can be improved, so as to more stably connect the battery pack 22 and the crossbeam 21 and increase the structural strength of the vehicle body.

[0093] In one embodiment, see Figure 1 , Figure 7 and Figure 8 The first connector 101 includes a second bonding plate 142. In use, the second bonding plate 142 is used to bond and fix with the rear side of the crossbeam 21. This not only facilitates the connection and fixation between the first connector 101 and the crossbeam 21, but also allows the force exerted by the rear side of the crossbeam 21 on the first connector 101 to be mainly applied to the second bonding plate 142, causing near-in-plane deformation of the second bonding plate 142. This ensures good stability of the second bonding plate 142, thereby ensuring the stability of the first connector 101.

[0094] In one embodiment, the second vertical plate 132 is disposed adjacent to the second bonding plate 142 to increase the structural strength of the first connector 101 and improve the stability of the first connector 101.

[0095] In one embodiment, see Figure 1 , Figure 2 and Figure 6 The lower side of the second bonding plate 142 has a second bent portion 152, which is used to be bonded and fixed to the crossbeam 21. When the first connecting member 101 is connected to the crossbeam 21, the second bent portion 152 bends from the bottom surface of the crossbeam 21 toward the rear surface of the crossbeam 21, so that the second bent portion 152 is bonded and fixed to the corresponding areas on the bottom surface and the rear surface of the crossbeam 21, thereby increasing the contact area between the first connecting member 101 and the crossbeam 21, thereby increasing the stress-bearing area of ​​the crossbeam 21, dispersing the stress points, reducing stress concentration, and improving the stability of the structure.

[0096] In one embodiment, the second vertical plate 132 is connected to the second bend 152, that is, the second vertical plate 132 transitions to the second bonding plate 142 via the second bend 152 to ensure good structural strength on the rear side of the first connector 101.

[0097] In one embodiment, the first bonding plate 141 is formed by extending from the corresponding first vertical plate 131, that is, the first bonding plate 141 and the corresponding first vertical plate 131 are integrally formed. Optionally, the first bonding plate 141 may also be formed independently from the corresponding first vertical plate 131, and the two are welded together. In one embodiment, the second bonding plate 142 is formed by extending from the corresponding second vertical plate 132, that is, the second bonding plate 142 and the corresponding second vertical plate 132 are integrally formed. Optionally, the second bonding plate 142 may also be formed independently from the corresponding second vertical plate 132, and the two are welded together.

[0098] In one embodiment, the first connector 101 includes a first bonding plate 141 and a second bonding plate 142 to better ensure the stability of the first connector 101 during use. It is understood that the first connector 101 may also include only the first bonding plate 141. Of course, the first connector 101 may also include only the second bonding plate 142.

[0099] Understandably, the first connector 101 includes a connecting structure, with the first inclined plate 121 and the second inclined plate 122 connected to the lateral ends of the connecting structure, while the first bonding plate 141 and the second bonding plate 142 are connected to the connecting structure. This eliminates the need for the first vertical plate 131 and the second vertical plate 132. The connecting structure can be a profile, a grille, or a plate, etc.

[0100] In one embodiment, the two ends of the first bonding plate 141 are connected to the first bottom bonding plate 161 and the second bottom bonding plate 162, respectively, to increase the structural strength of the first connector 101. Similarly, the two ends of the second bonding plate 142 are connected to the first bottom bonding plate 161 and the second bottom bonding plate 162, respectively, to increase the structural strength of the first connector 101.

[0101] In one embodiment, see Figure 1 , Figure 2 and Figure 10 The lower side of the first bonding plate 141 has a first bend 151, and the lower side of the second bonding plate 142 has a second bend 152. This further increases the contact area between the first connector 101 and the crossbeam 21, thereby increasing the load-bearing area of ​​the crossbeam 21, dispersing the load points, reducing stress concentration, and improving the stability of the structure. It is understandable that only the lower side of the first bonding plate 141 may have the first bend 151. Similarly, only the lower side of the second bonding plate 142 may have the second bend 152.

[0102] In one embodiment, the first vertical plate 131 is adjacent to the lower side of the first bonding plate 141, and the first vertical plate 131 and the first bonding plate 141 are on the same plane, that is, the first vertical plate 131 and the first bonding plate 141 are a single flat plate. By placing the first vertical plate 131 and the first bonding plate 141 on the same plane, it is not only convenient to process and manufacture, but also ensures that when the force exerted by the beam 21 on the first connecting member 101 is transmitted through the first bonding plate 141 to the first vertical plate 131 (i.e., the force exerted by the beam 21 on the first vertical plate 131), this force is approximately on the same plane as the first vertical plate 131, thereby causing near-in-plane deformation of the first vertical plate 131, which can ensure good stability of the first vertical plate 131, and thus ensure the stability of the first connecting member 101. Here, "approximately" means that a certain degree of error is allowed. That is to say, due to the existence of errors such as processing errors and installation errors, the force exerted by the crossbeam 21 on the first vertical plate 131 and the first vertical plate 131 are located in the same plane during the design. However, after actual installation, the force exerted by the crossbeam 21 on the first vertical plate 131 and the first vertical plate 131 may not be completely in the same plane, and there will often be a certain degree of error. Of course, the closer the force exerted by the crossbeam 21 on the first vertical plate 131 and the first vertical plate 131 is to being in the same plane, the more the deformation of the first vertical plate 131 caused by the force exerted by the crossbeam 21 on the first vertical plate 131 will be in-plane deformation, the better the stability of the first vertical plate 131, and correspondingly, the better the stability of the first connecting member 101.

[0103] In one embodiment, the second vertical plate 132 is adjacent to the lower side of the second bonding plate 142, and the second vertical plate 132 and the second bonding plate 142 are on the same plane, that is, the second vertical plate 132 and the second bonding plate 142 are a single flat plate. By placing the second vertical plate 132 and the second bonding plate 142 on the same plane, it is not only convenient to process and manufacture, but also ensures that when the force exerted by the beam 21 on the first connecting member 101 is transmitted through the second bonding plate 142 to the second vertical plate 132 (i.e., the force exerted by the beam 21 on the second vertical plate 132), this force is approximately on the same plane as the second vertical plate 132, thereby causing near-in-plane deformation of the second vertical plate 132, which can ensure the good stability of the second vertical plate 132, and thus ensure the stability of the first connecting member 101. Here, "approximately" means that a certain degree of error is allowed. That is to say, due to errors such as processing errors and installation errors, the force exerted by the crossbeam 21 on the second vertical plate 132 and the second vertical plate 132 are located in the same plane during the design. However, after actual installation, the force exerted by the crossbeam 21 on the second vertical plate 132 may not be completely in the same plane, and there will often be a certain degree of error. Of course, the closer the force exerted by the crossbeam 21 on the second vertical plate 132 is to being in the same plane, the more the deformation of the second vertical plate 132 caused by the force exerted by the crossbeam 21 on the second vertical plate 132 will be in-plane deformation, and the better the stability of the second vertical plate 132 will be. Correspondingly, the stability of the first connecting member 101 will be better.

[0104] Understandably, the above-mentioned schemes where the vertical plate and the corresponding bonding plate are on the same plane, and schemes where the bonding plate has a bent portion, can be implemented individually or in combination. To aid understanding, one combination scheme is given below: the first vertical plate 131 is adjacent to the lower side of the first bonding plate 141, and the first vertical plate 131 and the first bonding plate 141 are on the same plane; while the second vertical plate 132 transitions to the second bonding plate 142 via the second bent portion 152. Alternatively, the second vertical plate 132 is adjacent to the lower side of the second bonding plate 142, and the second vertical plate 132 and the second bonding plate 142 are on the same plane; while the first vertical plate 131 transitions to the first bonding plate 141 via the first bent portion 151.

[0105] In one embodiment, see Figure 2 , Figure 6 and Figure 7 The first connector 101 also includes a cavity structure 1010. The end of the cavity structure 1010 near the crossbeam 21 is open. By setting the cavity structure 1010, the weight of the first connector 101 can be reduced, thereby reducing the weight of the vehicle body. Setting the end of the cavity structure 1010 near the crossbeam to be open makes it easier to process and manufacture.

[0106] In one embodiment, see Figure 8 , Figure 9 and Figure 10 The first connector 101 also includes a base plate 11. A first inclined plate 121 and a second inclined plate 122 are respectively connected to the two transverse ends of the base plate 11. That is, the first inclined plate 121 is connected to the right end of the base plate 11, and the second inclined plate 122 is connected to the left end of the base plate 11. The base plate 11 is used to connect the first inclined plate 121 and the second inclined plate 122, thereby improving the structural strength of the first connector 101.

[0107] In one embodiment, when the first connector 101 includes a first vertical plate 131 and a second vertical plate 132, the first vertical plate 131 is connected to the front side of the base plate 11, and the second vertical plate 132 is connected to the rear side of the base plate 11, so as to improve the structural strength of the first connector 101.

[0108] In one embodiment, the first connector 101 can be formed by stamping sheet metal to facilitate processing and ensure the structural strength of the first connector 101. Of course, the first connector 101 can also be made by forging or casting to facilitate processing.

[0109] In one embodiment, the base plate 11, the first inclined plate 121, the second inclined plate 122, the first vertical plate 131, and the second vertical plate 132 together form a cavity structure 1010.

[0110] In one embodiment, see Figure 1 , Figure 4 and Figure 5 When the distance D between the first vertical plate 131 of the first connector 101 and the rear side of the battery pack 22 is greater than a preset distance, the connection structure 10 between the battery pack and the vehicle body also includes a second connector 102. The lower end of the first vertical plate 131 is connected to the second connector 102, and the second connector 102 is connected to the rear side of the battery pack 22.

[0111] When the first vertical plate 131 is welded to the rear side of the battery pack 22, the preset distance is the maximum distance that can be set between the first vertical plate 131 and the rear side of the battery pack 22 while ensuring the connection strength between the first vertical plate 131 and the battery pack 22. The preset distance is not entirely the same for different models of vehicle bodies and battery packs 22, and can be set according to the welding strength requirements, the structure and installation requirements of the crossbeam 21, battery pack 22, and first connecting member 101. When the distance D between the first vertical plate 131 and the rear side of the battery pack 22 is greater than the preset distance, it indicates that the distance D between the first vertical plate 131 and the rear side of the battery pack 22 is too large, and the welding strength between the first vertical plate 131 and the rear side of the battery pack 22 cannot be achieved. In this case, a second connecting member 102 is set to connect the first connecting member 101 and the battery pack 22, ensuring the structural strength of the connection and improving the adaptability of the connection structure 10 to battery packs 22 of different sizes and vehicle bodies of different sizes.

[0112] When the first vertical plate 131 is bolted to the rear side of the battery pack 22, the preset distance is the maximum distance that can be set between the first vertical plate 131 and the rear side of the battery pack 22, while ensuring the connection strength between the first vertical plate 131 and the battery pack 22. The preset distance is not entirely the same for different vehicle body models and battery packs 22; it can be set according to the bolt connection strength requirements, and the structural and installation requirements of the crossbeam 21, battery pack 22, and first connecting member 101. When the distance D between the first vertical plate 131 and the rear side of the battery pack 22 is greater than the preset distance, it indicates that the distance D between the first vertical plate 131 and the rear side of the battery pack 22 is too large, and the strength cannot be achieved when the first vertical plate 131 and the rear side of the battery pack 22 are bolted together. In this case, a second connecting member 102 is set to connect the first connecting member 101 and the battery pack 22, ensuring the structural strength of the connection and improving the adaptability of the connection structure 10 to battery packs 22 of different sizes and vehicle bodies of different sizes.

[0113] In one embodiment, see Figure 11When the distance D between the first vertical plate 131 of the first connecting member 101 and the rear side of the battery pack 22 is less than or equal to a preset distance, the lower end of the first vertical plate 131 is connected to the rear side of the battery pack 22. This simplifies the structure, facilitates installation, reduces costs, and improves the structural strength of the vehicle body. When the first vertical plate 131 is welded to the rear side of the battery pack 22, the preset distance is the maximum distance that can be set between the first vertical plate 131 and the rear side of the battery pack 22, while ensuring the connection strength between the first vertical plate 131 and the battery pack 22. The preset distance is not exactly the same for different models of vehicle bodies and battery packs 22. It can be set according to the welding strength requirements, the structure and installation requirements of the crossbeam 21, the battery pack 22, and the first connecting member 101. When the first vertical plate 131 is bolted to the rear side of the battery pack 22, the preset distance is the maximum distance that can be set between the first vertical plate 131 and the rear side of the battery pack 22, while ensuring the connection strength between the first vertical plate 131 and the battery pack 22. The preset distances are not exactly the same for different models of vehicle bodies and battery packs 22. They can be set according to the bolt connection strength requirements, the structure and installation requirements of the crossbeam 21, battery pack 22, and first connector 101.

[0114] In one embodiment, see Figure 5 , Figure 6 and Figure 8 When the battery pack connection structure 10 to the vehicle body also includes a second connector 102, and the first connector 101 includes a base plate 11, the base plate 11 is connected to the second connector 102 to facilitate connection and ensure the connection is secure.

[0115] In one embodiment, see Figure 3 The number of first connectors 101 is two, and the two first connectors 101 are spaced apart. This allows for the smaller size of each first connector 101, reducing its volume and weight. Furthermore, the spaced-apart arrangement of the two first connectors 101 creates an installation space between them; and the gap between the two first connectors 101 forms a near-triangular shape to enhance structural strength and ensure stability. Here, "near-triangular" means that the shape is not a standard triangle, but roughly triangular, and allows the top of the triangle to have a certain width.

[0116] In one embodiment, see Figure 12 The number of first connectors 101 can also be set to one, so that the crossbeam 21 and the first connector 101 have a larger contact area, thereby improving the structural strength.

[0117] In this embodiment, the battery pack connection structure 10 to the vehicle body includes a first connector 101a and a first connector 101b. The first connectors 101a and 101b are spaced apart, allowing for smaller dimensions and reducing their volume and weight. Furthermore, the spaced-apart arrangement of the first connectors 101a and 101b creates an installation space; and the gap between them forms a triangular-like shape, enhancing structural strength and stability. Here, "triangular-like" means the shape is not a standard triangle, but roughly triangular, allowing the top of the triangle to have a certain width.

[0118] In one embodiment, see Figure 13 The number of first connectors 101 can also be set to two, with the ends of the two first connectors 101 adjacent to each other near the crossbeam 21. The connection structure 10 between the battery pack and the vehicle body includes a first connector 101a and a first connector 101b, with the ends of the first connector 101a and the first connector 101b adjacent to each other near the crossbeam 21. This makes the gap between the first connectors 101a and 101b approximately triangular. Here, "approximately triangular" means that during actual installation, in order to ensure the connection between each first connector 101 and the crossbeam 21, there will be a certain gap between the two first connectors 101. Therefore, the shape formed by the gap between the first connectors 101a and 101b is not a standard triangle, but a near-triangular shape, allowing the top of the triangle to have a certain width.

[0119] In one embodiment, see Figure 14The number of first connectors 101 can also be set to four, with two adjacent first connectors 101 being adjacent to one end of the crossbeam 21. The battery pack connection structure 10 to the vehicle body includes first connectors 101a, 101b, 101c, and 101d. These connectors are arranged longitudinally. The end of first connector 101a near the crossbeam 21 is adjacent to the end of first connector 101c near the crossbeam 21. The end of first connector 101c near the crossbeam 21 is adjacent to the end of first connector 101d near the crossbeam 21. The end of first connector 101d near the crossbeam 21 is adjacent to the end of first connector 101b near the crossbeam 21. In other words, the adjacent ends of two first connectors 101 near the crossbeam 21 are adjacent, which allows the gap between the two first connectors 101 to form a triangular shape. This not only provides installation space but also improves structural stability. Understandably, the number of first connectors 101 can also be three, five, or other numbers. When the number of first connectors 101 is greater than or equal to two, the ends of two adjacent first connectors 101 that are close to the crossbeam 21 are adjacent to each other, so that the gap between the two first connectors 101 can form a triangle-like shape.

[0120] In one embodiment, when there are multiple first connectors 101, the structural shape of each first connector 101 can be set to be the same to facilitate processing and reduce costs.

[0121] In one embodiment, see Figure 1 When there are multiple first connectors 101, the structural shape of each first connector 101 can be set differently to adapt to different installation positions and improve the stability of the connection between the battery pack 22 and the crossbeam 21. The specific shape of each first connector 101 can be set according to the actual installation position and needs, and is not limited to one.

[0122] In one embodiment, see Figure 12 The first connecting member 101 is symmetrically distributed about the cross-section 210 passing through the center of the crossbeam 21 along its length. By adopting the above scheme, the first connecting member 101 is symmetrically arranged on the bottom side of the crossbeam 21, resulting in more balanced force distribution, thereby improving the stability of the structure and ensuring the structural strength and stability of the vehicle body. In this embodiment, there is only one first connecting member 101, and the first connecting member 101 is symmetrically arranged on the left and right sides, thus making the first connecting member 101 symmetrically distributed about the cross-section 210 passing through the center of the crossbeam 21 along its length.

[0123] In one embodiment, please refer to [the relevant documentation / reference]. Figure 3 and Figure 13When there are two first connectors 101, the two first connectors 101 are symmetrically distributed about the cross section 210 passing through the center of the crossbeam 21 in the length direction. Please refer to [link / reference]. Figure 14 When there are four first connectors 101, the four first connectors 101 are symmetrically distributed about the cross section 210 passing through the center of the cross beam 21 in the length direction. Understandably, when there are other numbers of first connectors 101, such as three, five, six, etc., these first connectors 101 are symmetrically distributed about the cross section 210 passing through the center of the cross beam 21 in the length direction, so that the cross beam 21 is subjected to more balanced forces, thereby improving the structural strength and stability of the vehicle body.

[0124] This application also provides a vehicle. Please refer to the embodiments therein. Figure 1 The vehicle includes a battery pack 22, a vehicle body, and a battery pack-vehicle connection structure 10 as described in any of the above embodiments. The vehicle body includes a left longitudinal beam 232, a right longitudinal beam 231, and a crossbeam 21. The left longitudinal beam 232 and the right longitudinal beam 231 are respectively connected to both ends of the crossbeam 21. The battery pack 22 is connected to the crossbeam 21 via a first connector 101. This vehicle uses the battery pack-vehicle connection structure 10 of the above embodiments, which allows for out-of-plane deformation of the first connector 101, ensuring good structural strength and stability of the first connector 101. This, in turn, ensures that the rear end of the battery pack 22 is securely fixed to the vehicle body crossbeam 21, thereby improving the structural strength and stability of the vehicle.

[0125] 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 connection structure between a battery pack and a vehicle body, the vehicle body comprising a left longitudinal beam (232), a right longitudinal beam (231), and a cross beam (21), wherein the left longitudinal beam (232) and the right longitudinal beam (231) are respectively connected to both ends of the cross beam (21), characterized in that: The connection structure between the battery pack and the vehicle body includes at least one first connector (101) for connecting the battery pack (22) and the crossbeam (21); The first connector (101) includes a first inclined plate (121) and a second inclined plate (122) spaced apart in the left-right direction. The first inclined plate (121) is located on the side of the second inclined plate (122) close to the right longitudinal beam (231). Both the first inclined plate (121) and the second inclined plate (122) are connected at one end to the crossbeam (21) and at the other end to the battery pack (22). The extended surface of the first inclined plate (121) closest to the right longitudinal beam (231) intersects with the right longitudinal beam (231); the extended surface of the second inclined plate (122) closest to the left longitudinal beam (232) intersects with the left longitudinal beam (232).

2. The connection structure between the battery pack and the vehicle body as described in claim 1, characterized in that: The longitudinal section of the first connector (101) is triangular in shape; From the crossbeam (21) to the battery pack (22): the length of the first connector (101) gradually decreases along the left-right direction.

3. The connection structure between the battery pack and the vehicle body as described in claim 2, characterized in that: The number of the first connectors (101) is at least two, and two adjacent first connectors (101) are spaced apart at one end near the crossbeam (21).

4. The connection structure between the battery pack and the vehicle body as described in claim 2, characterized in that: The number of the first connectors (101) is at least two, and two adjacent first connectors (101) are adjacent to one end of the crossbeam (21).

5. The connection structure between the battery pack and the vehicle body as described in any one of claims 1-4, characterized in that: The first connector (101) is symmetrically distributed about the cross section passing through the center of the crossbeam (21) in the length direction.

6. The connection structure between the battery pack and the vehicle body as described in any one of claims 1-4, characterized in that: The first connector (101) includes a first bottom plate (161) for fitting and fixing to the bottom surface of the crossbeam (21), the first bottom plate (161) being extended from one end of the first inclined plate (121) near the crossbeam (21) in a direction away from the second inclined plate (122); And / or, the first connector (101) includes a second bottom plate (162) for fitting and fixing to the bottom surface of the crossbeam (21), the second bottom plate (162) being provided to extend from one end of the second inclined plate (122) near the crossbeam (21) in a direction away from the first inclined plate (121).

7. The connection structure between the battery pack and the vehicle body as described in any one of claims 1-4, characterized in that: The first connector (101) further includes a first vertical plate (131), the left and right sides of which are respectively connected to the front side of the second inclined plate (122) and the front side of the first inclined plate (121); And / or, the first connector (101) further includes a second vertical plate (132), the left and right sides of which are connected to the rear side of the second inclined plate (122) and the rear side of the first inclined plate (121), respectively.

8. The connection structure between the battery pack and the vehicle body as described in claim 7, characterized in that: The first connector (101) further includes a first bonding plate (141) for bonding and fixing to the front side of the crossbeam (21), the lower side of the first bonding plate (141) is adjacent to the first vertical plate (131), and the first vertical plate (131) and the first bonding plate (141) are on the same plane. And / or, the first connector (101) further includes a second bonding plate (142) for bonding and fixing to the rear side of the crossbeam (21), the lower side of the second bonding plate (142) being adjacent to the second vertical plate (132), and the second vertical plate (132) and the second bonding plate (142) being on the same plane.

9. The connection structure between the battery pack and the vehicle body as described in claim 7, characterized in that: The first connector (101) further includes a first bonding plate (141) for fitting and fixing to the front side of the crossbeam (21). The lower side of the first bonding plate (141) has a first bending portion (151) that is bent from the bottom of the crossbeam (21) to the front side. The first bending portion (151) is connected to the first vertical plate (131). The first bending portion (151) is used to fit and fix to the bottom and front side of the crossbeam (21). And / or, the first connector (101) further includes a second bonding plate (142) for fitting and fixing to the rear side of the crossbeam (21), the lower side of the second bonding plate (142) having a second bend (152) formed by bending the bottom of the crossbeam (21) to the rear side, the second bend (152) being connected to the second vertical plate (132), and the second bend (152) being used for fitting and fixing to the bottom and rear side of the crossbeam (21).

10. The connection structure between the battery pack and the vehicle body as described in claim 7, characterized in that: When the first connector (101) includes the first vertical plate (131), and the distance between the first vertical plate (131) and the rear side of the battery pack (22) is less than or equal to a preset distance, the lower end of the first vertical plate (131) is connected to the rear side of the battery pack (22). Alternatively, when the first connector (101) includes the first vertical plate (131) and the distance between the first vertical plate (131) and the rear side of the battery pack (22) is greater than a preset distance, the connection structure (10) between the battery pack and the vehicle body further includes a second connector (102), the lower end of the first vertical plate (131) is connected to the second connector (102), and the second connector (102) is connected to the rear side of the battery pack (22).

11. The connection structure between the battery pack and the vehicle body as described in any one of claims 1-4, characterized in that: The first connector includes a cavity structure (1010), which is open at one end near the crossbeam.

12. A vehicle comprising a battery pack (22) and a body, the body comprising a left longitudinal beam (232), a right longitudinal beam (231), and a crossbeam (21), the left longitudinal beam (232) and the right longitudinal beam (231) being respectively connected to both ends of the crossbeam (21), characterized in that: It also includes a battery pack and vehicle body connection structure (10) as described in any one of claims 1-11, wherein the battery pack (22) is connected to the crossbeam (21) via the first connector (101).

Images