Battery pack mounting structure and new energy commercial vehicle

Abstract

The invention provides a battery pack mounting structure and a new energy commercial vehicle, the battery pack mounting structure comprises a first seat body, a second seat body and an elastic body arranged between the first seat body and the second seat body, the first seat body is provided with a first connecting part used for being connected with a to-be-mounted battery pack, and the second seat body is provided with a second connecting part used for being connected with a to-be-mounted battery pack; the second seat body is provided with a second connecting part used for being connected with a bottom support of the vehicle, and the elastic body is connected with the first seat body and the second seat body and can elastically deform so as to play a buffering role between the battery pack and the bottom support. When the elastic body is subjected to external force, the elastic body elastically deforms to absorb and release the external force, the impact on the first seat body and the second seat body is reduced, the elastic body quickly restores when the external force disappears, and the mechanical properties of the first connecting part and the second connecting part are improved by utilizing the deformation characteristic of the elastic body; the connection position of the battery pack and the bottom support is protected, stress concentration is avoided, connection reliability and stability are improved, and normal operation of the new energy commercial vehicle is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and particularly to a battery pack mounting structure and a new energy commercial vehicle. Background Art

[0002] A new energy commercial vehicle refers to a commercial vehicle that uses a new power system, such as a battery, to replace the traditional fuel power. It has advantages such as environmental protection, energy conservation, and low operating costs, and is widely used in fields such as logistics transportation, urban distribution, and public transportation. In the future, with the improvement of infrastructure and the decline of costs, the market penetration rate of new energy commercial vehicles will be further increased, becoming the core carrier of green logistics.

[0003] In related technologies, a new energy commercial vehicle includes a vehicle frame and a battery pack, and a base for mounting the battery pack is provided on the vehicle frame. During assembly, the battery pack is fixed to the base by a plurality of bolts arranged at intervals. However, when subjected to external forces, stress concentration is likely to occur at the bolts, resulting in fracture, causing the connection between the battery pack and the base to fail, and affecting the normal operation of the new energy commercial vehicle. Summary of the Invention

[0004] This application provides a battery pack mounting structure and a new energy commercial vehicle to solve the problem that the connection between the battery pack and the base is likely to fail when subjected to external forces, improve the reliability and stability of the connection between the battery pack and the base, and ensure the normal operation of the new energy commercial vehicle.

[0005] In a first aspect, this application provides a battery pack mounting structure, including:

[0006] A first seat body, on which a first connection portion is provided, and the first connection portion is used to connect with a battery pack to be installed.

[0007] A second seat body, on which a second connection portion is provided, and the second connection portion is used to connect with the base of the vehicle.

[0008] An elastic body, arranged between the first seat body and the second seat body, and connected to the first seat body and the second seat body respectively, and the elastic body can at least elastically deform in the direction opposite to the battery pack and the base, so as to play a buffering role between the battery pack and the base.

[0009] The battery pack mounting structure provided by this application, by setting a first seat body, a second seat body and an elastomer, sets a first connecting part for connecting with the battery pack to be mounted on the first seat body, and sets a second connecting part for connecting with the underframe of a new energy commercial vehicle on the second seat body; an elastomer is arranged between the first seat body and the second seat body, and the elastomer is connected to both the first seat body and the second seat body. The elastomer, the first seat body and the second seat body form an integral battery pack mounting structure for mounting the battery pack on the underframe, and the elastomer can elastically deform in the direction opposite to the battery pack and the underframe to play a buffering role between the battery pack and the underframe. During specific use, the battery pack is connected to the battery pack mounting structure of this application through the first connecting part, and the battery pack mounting structure connected with the battery pack is connected to the underframe through the second connecting part, and then the battery pack can be mounted on the underframe of the new energy commercial vehicle. Since there is an elastomer between the first seat body and the second seat body, and the elastomer can elastically deform in the direction opposite to the battery pack and the underframe, when an external force acts on the battery pack or the underframe, the elastomer will elastically deform. The elastic deformation of the elastomer can absorb and release the external force, play a buffering role between the battery pack and the underframe, reduce the impact on the first seat body and the second seat body, and when the external force disappears, the elastomer will quickly return to its original state. Thus, the mechanical properties of the first connecting part and the second connecting part are improved by using the elastic deformation characteristics of the elastomer, that is, the setting of the elastomer improves the mechanical properties of the connection position between the battery pack and the underframe, protects the connection position between the battery pack and the underframe, and thus to a certain extent avoids the phenomenon that the connection position between the battery pack and the underframe appears stress concentration and breaks, improves the connection reliability and stability between the battery pack and the underframe, and ensures the normal operation of the new energy commercial vehicle.

[0010] At the same time, the setting of the elastomer makes the battery pack mounting structure provided by this application have a certain shock absorption effect. In this way, when the new energy commercial vehicle encounters bumps, the elastic deformation characteristics of the elastomer are used to make the battery pack mounting structure play a shock absorption function between the battery pack and the underframe, thereby improving the running stability of the new energy commercial vehicle.

[0011] In a possible design, a first receiving groove is arranged on the side of the elastomer facing the first seat body, and at least part of the first seat body is arranged in the first receiving groove.

[0012] Through the above solution, a first receiving groove is provided on the elastomer, and at least part of the first seat body is arranged in the first receiving groove. On the one hand, the elastomer is wrapped around the circumferential outer side of the first seat body, and the elastomer has a better buffering and protecting effect on the first seat body and the first connecting portion thereon, further improving the mechanical properties of the first connecting portion, and further avoiding the phenomenon that the first connecting portion breaks due to stress concentration, thereby further enhancing the connection reliability and stability between the battery pack and the bottom bracket. On the other hand, the contact area between the elastomer and the first seat body is increased, the connection strength between the elastomer and the first seat body is enhanced, the structural stability of the battery pack mounting structure provided by the present application is relatively high, and the connection stability between the battery pack and the bottom bracket is improved.

[0013] In a possible design, at least part of the side wall of the first receiving groove is inclined in a direction approaching each other along the direction from the first seat body to the second seat body, and the outer contour of the first seat body matches the shape of the first receiving groove.

[0014] Through the above solution, at least part of the side wall of the first receiving groove is inclined in a direction approaching each other along the direction from the first seat body to the second seat body. In this way, one side of the opening of the first receiving groove is wider, and one side of the bottom of the first receiving groove is narrower. Along the direction from the opening to the bottom of the first receiving groove, at least part of the side wall of the first receiving groove forms an inclined wall that inclines inward, which has a guiding effect on the deformation of the elastomer, facilitates the deformation of the elastomer, and improves the buffering and shock absorption effects of the battery pack mounting structure.

[0015] In a possible design, a second receiving groove is provided on the side of the second seat body facing the elastomer, and at least part of the elastomer is arranged in the second receiving groove.

[0016] Through the above solution, a second receiving groove is provided on the second seat body, and at least part of the elastomer is arranged in the second receiving groove. On the one hand, the second receiving groove is wrapped around the circumferential outer side of the elastomer, and the second receiving groove has a good protecting effect on the elastomer, which helps to extend the service life of the elastomer. On the other hand, the contact area between the elastomer and the second seat body is increased. Not only does the elastomer have a better buffering and protecting effect on the second seat body and the second connecting portion thereon, improving the mechanical properties of the second connecting portion and further avoiding the phenomenon that the second connecting portion breaks due to stress concentration, thereby further enhancing the connection reliability and stability between the battery pack and the bottom bracket; moreover, the connection strength between the elastomer and the second seat body is also enhanced, the structural stability of the battery pack mounting structure provided by the present application is higher, and the connection stability between the battery pack and the bottom bracket is further improved.

[0017] In a possible design, at least part of the side wall of the second receiving groove is inclined in a direction approaching each other along the direction from the first seat body to the second seat body, and the outer contour of the elastomer on the side facing the second seat body matches the shape of the second receiving groove.

[0018] Through the above solution, at least part of the side wall of the second receiving groove is inclined in a direction approaching each other along the direction from the first seat body to the second seat body. In this way, the side of the notch of the second receiving groove is wider, and the side of the bottom of the second receiving groove is narrower. Along the direction from the notch to the bottom of the second receiving groove, at least part of the side wall of the second receiving groove forms an inclined wall that inclines inward, which has a guiding effect on the deformation of the elastomer, facilitates the deformation of the elastomer, and improves the buffering and shock absorption effects of the battery pack installation structure.

[0019] In a possible design, the first seat body has a convex portion extending toward the second seat body. A first avoidance through hole for the convex portion to pass through is formed on the elastomer, and a second avoidance through hole for the convex portion to pass through is formed on the second seat body. The first avoidance through hole and the second avoidance through hole are coaxially arranged, and the convex portion is at least in clearance fit with the second avoidance through hole.

[0020] Through the above solution, a convex portion extending toward the second seat body is provided on the first seat body. The convex portion passes through the first avoidance through hole of the elastomer and the second avoidance through hole of the second seat body, and the convex portion is at least in clearance fit with the second avoidance through hole. In this way, when an external force is applied and the elastomer deforms, the convex portion has a guiding effect on the compensation displacement of the first seat body and the second seat body, that is, the convex portion has a guiding effect on the absorption and release of the external force, making the elastic deformation of the elastomer more flexible, reducing the time for the elastomer to absorb and release the external force, and improving its buffering performance.

[0021] At the same time, since the convex portion extends to the second avoidance through hole of the second seat body after passing through the first avoidance through hole of the elastomer, the convex portion connects the first seat body and the second seat body, so that the first seat body and the second seat body have an overlapping part, improving the structural strength and load-bearing performance of the battery pack installation structure.

[0022] In a possible design, an avoidance groove for the convex portion to extend into is formed on the side of the second seat body facing the bottom tray. At least part of the notch of the avoidance groove faces the bottom tray, and the depth of the avoidance groove is greater than the maximum deformation amount of the elastomer.

[0023] Through the above solution, a relief groove for the convex portion to extend into is provided on the second seat body, and the groove depth of the relief groove is greater than the maximum deformation amount of the elastic body. In this way, when an external force is applied and the elastic body undergoes elastic deformation with the maximum deformation amount, during the process in which the convex portion cooperates with the elastic body to generate a compensation displacement, the convex portion will never extend outside the relief groove. That is to say, the convex portion will never contact the bottom support, so that the convex portion will not interfere with the elastic deformation of the elastic body, ensuring that the elastic body can play a sufficient buffering and shock-absorbing role.

[0024] In a possible design, the battery pack mounting structure further includes a connecting member;

[0025] A connecting hole for the connecting member to extend into is provided on the side of the convex portion facing the bottom support. The connecting member is connected to the connecting hole, and the connecting member abuts against the bottom of the relief groove to connect the first seat body and the second seat body. A relief structure for avoiding the connecting member is provided between the second seat body and the bottom support.

[0026] Through the above solution, the convex portion and the second seat body can be connected together by the connecting member. In this way, on the basis of the connection of the elastic body, the first seat body and the second seat body are further assembled together by the connecting member, so that the two seat bodies form an integral structure, improving the load-bearing performance of the first seat body and the second seat body, and further improving the structural strength and load-bearing performance of the battery pack mounting structure.

[0027] In a possible design, the first connecting portion includes a first mounting hole and a first fastener;

[0028] The first mounting hole is at least provided on the first seat body. A first assembly hole matching the first mounting hole is provided on the battery pack. The first fastener is inserted through the first mounting hole and the first assembly hole to connect the battery pack mounting structure and the battery pack together.

[0029] Through the above solution, by providing the first mounting hole on the first seat body, and the first mounting hole matches the first assembly hole on the battery pack. In this way, by connecting the first fastener in the first mounting hole and the first assembly hole, the battery pack can be assembled on the battery pack mounting structure, with a simple structure, convenient assembly, and stable and reliable connection.

[0030] In a possible design, the second connecting portion includes a second mounting hole and a second fastener;

[0031] The second mounting hole is provided on the second seat body. A second assembly hole matching the second mounting hole is provided on the bottom support. The second fastener is inserted through the second mounting hole and the second assembly hole to connect the battery pack mounting structure and the bottom support together.

[0032] Through the above solution, by providing a second mounting hole on the second body, and the second mounting hole is matched with the second assembly hole on the bottom bracket, the second fastener is connected in the second mounting hole and the second assembly hole, and thus the battery pack mounting structure can be connected to the bottom bracket, which has a simple structure, convenient assembly, and stable and reliable connection.

[0033] In a possible design, there are at least two second connecting parts, and the at least two second connecting parts are arranged at intervals along the circumferential direction of the second body.

[0034] Through the above solution, a plurality of second connecting parts are arranged at intervals in the circumferential direction of the second body. In this way, the battery pack mounting structure connected with the battery pack can be mounted on the bottom bracket through the plurality of second connecting parts, which improves the connection strength between the battery pack mounting structure and the bottom bracket, and thus improves the connection strength and connection stability between the battery pack and the bottom bracket, further avoiding the occurrence of connection failure between the battery pack and the bottom bracket.

[0035] In a possible design, the elastomer is bonded to the first body;

[0036] and / or, the elastomer is bonded to the second body;

[0037] and / or, the elastomer includes rubber;

[0038] and / or, the first body includes a metal body;

[0039] and / or, the second body includes a metal body.

[0040] In a second aspect, the present application provides a new energy commercial vehicle, including a bottom bracket, a battery pack, and the battery pack mounting structure as described above;

[0041] The battery pack is mounted on the bottom bracket through the battery pack mounting structure.

[0042] In a possible design, there are at least two battery pack mounting structures, and the at least two battery pack mounting structures are arranged at intervals on opposite sides of the bottom bracket.

[0043] Through the above solution, a plurality of battery pack mounting structures are provided. In this way, the battery pack can be assembled on the bottom bracket through the plurality of battery pack mounting structures, further improving the connection strength and connection stability between the battery pack and the bottom bracket.

[0044] For the new energy commercial vehicle provided in the above second aspect and each possible design of the above second aspect, the beneficial effects can refer to the beneficial effects brought by the above first aspect and each possible implementation manner of the first aspect, which will not be elaborated here. Description of the Drawings

[0045] Figure 1An isometric view of the underframe and battery pack of a new energy commercial vehicle according to an embodiment of the present application, assembled together.

[0046] Figure 2 is Figure 1 A partially enlarged view of the cross-sectional view at location A in

[0047] Figure 3 A partial exploded view of a new energy commercial vehicle according to an embodiment of the present application.

[0048] Figure 4 An isometric view of the battery pack mounting structure according to an embodiment of the present application.

[0049] Figure 5 A cross-sectional view of the battery pack mounting structure according to an embodiment of the present application.

[0050] Explanation of reference numerals: 10, battery pack mounting structure; 1, first seat body; 11, first connecting portion; 111, first mounting hole; 112, first fastener; 12, convex portion; 2, second seat body; 21, second connecting portion; 211, second mounting hole; 212, second fastener; 22, second avoidance through hole; 3, elastic body; 31, first avoidance through hole; 4, first receiving groove; 5, second receiving groove; 6, avoidance groove; 7, connecting member; 8, stop member; 20, battery pack; 30, underframe; 301, avoidance hole. Detailed implementation manners

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the drawings are intended to cover non-exclusive inclusion.

[0053] References to "embodiments" in this specification mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase "embodiments" appearing in various places in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0054] As used herein, the term "and / or" is merely a description of the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can mean: the existence of A, the existence of both A and B, and the existence of B. Additionally, the character " / " herein generally indicates an "or" relationship between the associated objects before and after.

[0055] The directional terms used in the following description are the directions shown in the figures and do not limit the specific structures of the battery pack mounting structure and the new energy commercial vehicle of the present application. For example, in the description of the present application, terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0056] In addition, the terms "first", "second", etc. in the specification and claims of the present application or in the above-mentioned drawings are used to distinguish different objects and not to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0057] In the description of the present application, unless otherwise specified, "a plurality of" means two or more (including two). Similarly, "a plurality of groups" means two or more groups (including two groups).

[0058] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, the "connection" or "linkage" of a mechanical structure may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection by screws, bolts, or other spacers; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. The "connection" or "linkage" of a circuit structure may refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it may be a direct connection, that is, a physical connection, or it may be indirectly connected through at least one intermediate element, as long as the circuit is connected. It may also be the connection inside two components; in addition to the signal connection through the circuit, the signal connection may also refer to the signal connection through a media medium, such as radio waves. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0059] Referring to Figures 1 to 5 As shown, this embodiment provides a battery pack mounting structure 10. The battery pack mounting structure 10 includes a first seat body 1, a second seat body 2, and an elastic body 3. The first seat body 1, the second seat body 2, and the elastic body 3 are connected together to form an integral battery pack mounting structure 10.

[0060] A vehicle, such as a new energy commercial vehicle, generally includes a vehicle frame (not shown) and a battery pack 20. A bottom bracket 30 for mounting the battery pack 20 is provided on the vehicle frame. The battery pack mounting structure 10 provided in this embodiment is used to mount the battery pack 20 of the vehicle on the bottom bracket 30 and can play a buffering role between the battery pack 20 and the bottom bracket 30 to protect the connection position between the battery pack 20 and the bottom bracket 30 and improve the mechanical properties of the connection position between the battery pack 20 and the bottom bracket 30.

[0061] The following embodiments will be explained and described by taking the battery pack mounting structure 10 for mounting the battery pack 20 of a new energy commercial vehicle on the bottom bracket 30 of a new energy commercial vehicle as an example.

[0062] Specifically, referring to Figures 1 to 4 As shown, a first connection portion 11 is provided on the first seat body 1. The first connection portion 11 is used to connect with the battery pack 20 to be installed; a second connection portion 21 is provided on the second seat body 2. The second connection portion 21 is used to connect with the bottom bracket 30 of the new energy commercial vehicle; the elastic body 3 is disposed between the first seat body 1 and the second seat body 2 and is respectively connected to the first seat body 1 and the second seat body 2, and the elastic body 3 can at least be in the direction opposite to the battery pack 20 and the bottom bracket 30 (referring toFigure 2 and Figure 5 The X-direction in Figure 5 undergoes elastic deformation to play a buffering role between the battery pack 20 and the bottom bracket 30.

[0063] In specific implementation, the first seat body 1 and the battery pack 20 can be connected together through the first connecting portion 11 to realize the connection between the battery pack mounting structure 10 and the battery pack 20. The second seat body 2 and the bottom bracket 30 can be connected together through the second connecting portion 21 to realize the connection between the battery pack mounting structure 10 and the bottom bracket 30. Since the elastic body 3 is arranged between the first seat body 1 and the second seat body 2 and is connected to both the first seat body 1 and the second seat body 2, the elastic body 3, the first seat body 1, and the second seat body 2 are an integral structure. Therefore, the battery pack 20 can be mounted on the bottom bracket 30 through the first connecting portion 11 and the second connecting portion 21, realizing the assembly of the battery pack 20 on the bottom bracket 30, and the connection is convenient and stable.

[0064] In specific use, there is no order requirement for the assembly of the first connecting portion 11 and the second connecting portion 21. That is to say, the battery pack mounting structure 10 and the battery pack 20 can be connected together through the first connecting portion 11 first, and then the battery pack mounting structure 10 connected with the battery pack 20 can be mounted on the bottom bracket 30 through the second connecting portion 21. Of course, the battery pack mounting structure 10 and the bottom bracket 30 can also be connected together through the second connecting portion 21 first, and then the battery pack mounting structure 10 and the battery pack 20 can be connected together through the first connecting portion 11.

[0065] By mounting the battery pack 20 on the bottom bracket 30 through the battery pack mounting structure 10 of this embodiment, compared with the related technology in which the battery pack is connected to the cluster frame through fasteners such as bolts, the cluster frame is wrapped around the circumferential outer side of the battery pack, and then the cluster frame connected with the battery pack is connected to the bottom bracket through a pressing structure, fasteners such as bolts, the cluster frame wrapped around the battery pack is cancelled, which reduces the overall weight of the new energy vehicle to a certain extent, meets the lightweight design requirements, and is beneficial to improving the cruising range of new energy commercial vehicles.

[0066] Since the elastic body 3 is connected between the first seat body 1 and the second seat body 2, and the elastic body 3 can at least undergo elastic deformation in the direction relative to the battery pack 20 and the base 30, when the battery pack 20 is subjected to an external force and the first seat body 1 is subjected to an external force, or when the base 30 is subjected to an external force and the second seat body 2 is subjected to an external force, the elastic body 3 will be stretched or compressed, and the external force will be converted into elastic potential energy, thereby absorbing and releasing the external force. That is to say, when the battery pack 20 or the base 30 is subjected to an external force, the elastic body 3 will undergo elastic deformation (reversible deformation), and the elastic deformation of the elastic body 3 can absorb and release the external force. The battery pack 20 and the base 30 act as a buffer to reduce the impact on the first seat body 1 and the second seat body 2, and the elastic deformation characteristics of the elastomer 3 are used to improve the mechanical properties of the first connecting part 11 and the second connecting part 21, that is, the setting of the elastomer 3 improves the mechanical properties of the connection position between the battery pack 20 and the base 30, and protects the connection position between the battery pack 20 and the base 30, thereby avoiding stress concentration and fracture at the connection position between the battery pack 20 and the base 30 to a certain extent, improving the connection reliability and stability between the battery pack 20 and the base 30, and ensuring the normal operation of the new energy commercial vehicle.

[0067] In addition, the elastomer 3 is soft and can evenly distribute stress when subjected to force, thereby avoiding local concentration of load and causing impact on the connection position between the battery pack 20 and the base 30, further improving the mechanical properties of the connection position between the battery pack 20 and the base 30, and providing better protection for the connection position between the battery pack 20 and the base 30.

[0068] The battery pack mounting structure 10 provided in this embodiment is configured by setting a first seat body 1, a second seat body 2, and an elastic body 3. A first connection portion 11 for connecting with a battery pack 20 to be installed is provided on the first seat body 1, and a second connection portion 21 for connecting with a chassis 30 of a new energy commercial vehicle is provided on the second seat body 2. An elastic body 3 is arranged between the first seat body 1 and the second seat body 2, such that the elastic body 3 is connected to both the first seat body 1 and the second seat body 2. The elastic body 3, the first seat body 1, and the second seat body 2 form an integral battery pack mounting structure 10 for mounting the battery pack 20 on the chassis 30, and the elastic body 3 can elastically deform in the direction opposite to that of the battery pack 20 and the chassis 30 to play a buffering role between the battery pack 20 and the chassis 30. During specific use, the battery pack 20 is connected to the battery pack mounting structure 10 of this embodiment through the first connection portion 11, and the battery pack mounting structure 10 connected to the battery pack 20 is connected to the chassis 30 through the second connection portion 21, thereby mounting the battery pack 20 on the chassis 30 of the new energy commercial vehicle. Since the elastic body 3 is arranged between the first seat body 1 and the second seat body 2, and the elastic body 3 can elastically deform in the direction opposite to that of the battery pack 20 and the chassis 30, when an external force acts on the battery pack 20 or the chassis 30, the elastic body 3 will elastically deform. The elastic deformation of the elastic body 3 can absorb and release the external force, playing a buffering role between the battery pack 20 and the chassis 30, reducing the impact on the first seat body 1 and the second seat body 2, and when the external force disappears, the elastic body 3 will quickly return to its original state. Thus, the mechanical properties of the first connection portion 11 and the second connection portion 21 are improved by using the elastic deformation characteristics of the elastic body 3, that is, the arrangement of the elastic body 3 improves the mechanical properties of the connection position between the battery pack 20 and the chassis 30, protecting the connection position between the battery pack 20 and the chassis 30, thereby to a certain extent avoiding the occurrence of stress concentration and fracture at the connection position between the battery pack 20 and the chassis 30, enhancing the connection reliability and stability between the battery pack 20 and the chassis 30, and ensuring the normal operation of the new energy commercial vehicle.

[0069] Meanwhile, the arrangement of the elastic body 3 enables the battery pack mounting structure 10 provided in this embodiment to have a certain shock absorption effect. In this way, when the new energy commercial vehicle encounters bumps, the elastic deformation characteristics of the elastic body 3 are utilized to enable the battery pack mounting structure 10 to play a shock absorption function between the battery pack 20 and the chassis 30, thereby enhancing the running stability of the new energy commercial vehicle.

[0070] Refer to Figure 1 and Figure 3 As shown, the battery pack 20 is usually assembled on the top of the chassis 30. In some implementation manners, refer to Figure 2 and Figure 5As shown, the first base body 1 connected to the battery pack 20 is located above, at least part of the second base body 2 is located below the first base body 1, and the elastic body 3 is connected between the first base body 1 and the second base body 2, playing a role of buffering and shock absorption.

[0071] In some embodiments, referring to Figure 2 and Figure 5 As shown, on the side of the elastic body 3 facing the first base body 1 (referring to Figure 2 as shown in, the top of the elastic body 3), a first receiving groove 4 is provided, and at least part of the first base body 1 is arranged in the first receiving groove 4.

[0072] By providing the first receiving groove 4 on the elastic body 3 and arranging at least part of the first base body 1 in the first receiving groove 4, on the one hand, the elastic body 3 is wrapped around the circumferential outer side of the first base body 1, and the elastic body 3 has a better buffering and protecting effect on the first base body 1 and the first connecting portion 11 thereon, further improving the mechanical properties of the first connecting portion 11, further avoiding the phenomenon that the first connecting portion 11 breaks due to stress concentration, and thus further improving the connection reliability and stability between the battery pack 20 and the bottom bracket 30. On the other hand, the contact area between the elastic body 3 and the first base body 1 is increased, the connection strength between the elastic body 3 and the first base body 1 is improved, the structural stability of the battery pack mounting structure 10 provided in this embodiment is relatively high, and the connection stability between the battery pack 20 and the bottom bracket 30 is improved.

[0073] In some embodiments, referring to Figure 2 and Figure 5 As shown, in the direction from the first base body 1 to the second base body 2 (referring to Figure 2 the X direction in), at least part of the side wall of the first receiving groove 4 is inclined towards the direction of approaching each other, and the outer contour of the first base body 1 matches the shape of the first receiving groove 4.

[0074] By making at least part of the side wall of the first receiving groove 4 inclined towards the direction of approaching each other in the direction from the first base body 1 to the second base body 2, the opening side of the first receiving groove 4 is wider and the bottom side of the first receiving groove 4 is narrower. In the direction from the opening to the bottom of the first receiving groove 4, at least part of the side wall of the first receiving groove 4 forms an inclined wall inclined inwards, which has a guiding effect on the deformation of the elastic body 3, facilitates the deformation of the elastic body 3, and improves the buffering and shock absorption effect of the battery pack mounting structure 10.

[0075] Moreover, since the outer contour of the first body 1 matches the shape of the first receiving groove 4, the outer wall of the first body 1 fits well with the groove wall of the first receiving groove 4 (i.e., the elastomer 3), which facilitates the better transfer of external force to the elastomer 3. In particular, the external force on the first body 1 can be better transferred to the elastomer 3, enabling the elastomer 3 to fully absorb energy and thus play a better buffering role. At the same time, the elastomer 3 has a better bearing effect on the first body 1, enhancing the structural stability of the battery pack mounting structure 10 of this embodiment.

[0076] In some embodiments, referring to Figure 2 and Figure 5 as shown, on the side of the second body 2 facing the elastomer 3 (referring to Figure 2 as shown, the top of the second body 2), a second receiving groove 5 is provided, and at least part of the elastomer 3 is disposed in the second receiving groove 5.

[0077] By providing the second receiving groove 5 on the second body 2 and disposing at least part of the elastomer 3 in the second receiving groove 5, on the one hand, the second receiving groove 5 covers the circumferential outer side of the elastomer 3, and the second receiving groove 5 has a good protective effect on the elastomer 3, which helps to extend the service life of the elastomer 3. On the other hand, the contact area between the elastomer 3 and the second body 2 is increased, which not only enables the elastomer 3 to have a better buffering and protective effect on the second body 2 and the second connecting portion 21 thereon, improves the mechanical properties of the second connecting portion 21 better, and further avoids the occurrence of the phenomenon of stress concentration and fracture of the second connecting portion 21, thereby further enhancing the connection reliability and stability between the battery pack 20 and the base 30; moreover, the connection strength between the elastomer 3 and the second body 2 is also enhanced, making the structural stability of the battery pack mounting structure 10 provided in this embodiment higher, and further enhancing the connection stability between the battery pack 20 and the base 30.

[0078] In some embodiments, referring to Figure 2 and Figure 5 as shown, in the direction from the first body 1 to the second body 2, at least part of the side wall of the second receiving groove 5 is inclined towards the direction of approaching each other, and the outer contour of the side of the elastomer 3 facing the second body 2 matches the shape of the second receiving groove 5.

[0079] Through the above solution, at least part of the side wall of the second receiving groove 5 is inclined towards the direction of approaching each other in the direction from the first seat body 1 to the second seat body 2. In this way, one side of the notch of the second receiving groove 5 is wider, and one side of the bottom of the second receiving groove 5 is narrower. In the direction from the notch to the bottom of the second receiving groove 5, at least part of the side wall of the second receiving groove 5 is formed as an inclined wall that inclines inwards, which has a guiding effect on the deformation of the elastic body 3, facilitates the deformation of the elastic body 3, and improves the buffering and shock absorption effects of the battery pack mounting structure 10.

[0080] Moreover, since the outer contour of the elastic body 3 on the side facing the second seat body 2 matches the shape of the second receiving groove 5, the fitting between the elastic body 3 and the groove wall of the second receiving groove 5 (i.e., the second seat body 2) is relatively good. In this way, it is convenient for external forces to be better transmitted to the elastic body 3. In particular, the external forces on the second seat body 2 can be better transmitted to the elastic body 3, enabling the elastic body 3 to fully absorb energy, thereby playing a better buffering role. At the same time, the second seat body 2 has a better bearing effect on the elastic body 3, improving the structural stability of the battery pack mounting structure 10 of this embodiment.

[0081] In some embodiments, as shown in Figure 2 and Figure 5 the first seat body 1 has a convex portion 12 extending towards the second seat body 2, that is, the bottom of the first seat body 1 has a convex portion 12 extending downwards. The elastic body 3 is provided with a first avoidance through hole 31 for the convex portion 12 to pass through, and the second seat body 2 is provided with a second avoidance through hole 22 for the convex portion 12 to pass through. The first avoidance through hole 31 and the second avoidance through hole 22 are coaxially arranged, and the convex portion 12 is at least in clearance fit with the second avoidance through hole 22.

[0082] That is to say, the bottom of the first seat body 1 has a convex portion 12 extending downwards. The convex portion 12 passes through the first avoidance through hole 31 of the elastic body 3 and the second avoidance through hole 22 of the second seat body 2, and the convex portion 12 is at least in clearance fit with the second avoidance through hole 22. In this way, when an external force is applied and the elastic body 3 deforms, the convex portion 12 has a guiding effect on the compensation displacement of the first seat body 1 and the second seat body 2, that is, the convex portion 12 has a guiding effect on the absorption and release of external forces, making the elastic deformation of the elastic body 3 more flexible, reducing the time for the elastic body 3 to absorb and release external forces, and improving its buffering performance.

[0083] Specifically, when an external force is applied, since the convex portion 12 is in clearance fit with the second avoidance through hole 22 on the second seat body 2, during the elastic deformation process of the elastic body 3, the first seat body 1 and the second seat body 2 can generate a compensation displacement matching the elastic deformation amount of the elastic body 3 in the direction of approaching or moving away from each other under the action of the elastic force of the elastic body 3, improving the buffering performance of the elastic body 3.

[0084] In addition, since the protrusion 12 passes through the first avoidance hole 31 of the elastomer 3 and extends to the second avoidance hole 22 of the second seat body 2, the protrusion 12 connects the first seat body 1 and the second seat body 2, so that the first seat body 1 and the second seat body 2 have overlapping parts, thereby improving the structural strength and load-bearing performance of the battery pack mounting structure 10.

[0085] In some implementations, the aperture of the first avoidance hole 31 can be smaller than the aperture of the second avoidance hole 22, for example. The outer wall of the protrusion 12 is bonded to the hole wall of the first avoidance hole 31 of the elastomer 3, thereby increasing the contact area between the elastomer 3 and the first seat body 1, facilitating force transmission, and improving the shock-absorbing and buffering effect of the elastomer 3.

[0086] Of course, in other implementations, the aperture of the first avoidance hole 31 can be consistent with the aperture of the second avoidance hole 22, and the protrusion 12 can be loosely matched with the first avoidance hole 31 of the elastomer 3. When the structure of the elastomer 3 is the same, the elastic deformation of the elastomer 3 is more flexible and the elastic deformation is larger, thereby improving the shock absorbing and buffering performance of the elastomer 3.

[0087] In some embodiments, reference Figure 2 , Figure 4 and Figure 5 As shown, the side of the second seat body 2 facing the bottom bracket 30 is provided with an escape groove 6 for the convex portion 12 to extend into. It can be understood that the escape groove 6 is connected to the second escape through hole 22 of the second seat body 2. Specifically, the opening of the second escape through hole 22 facing away from the elastic body 3 is provided on the bottom of the escape groove 6. At least part of the notch of the escape groove 6 faces the bottom bracket 30, and the groove depth of the escape groove 6 is greater than the maximum deformation of the elastic body 3.

[0088] By providing an avoidance groove 6 on the second seat body 2 for the protrusion 12 to extend into, and making the groove depth of the avoidance groove 6 greater than the maximum deformation of the elastomer 3, when the elastomer 3 undergoes elastic deformation with the maximum deformation amount under external force, the protrusion 12 will never extend to the outside of the avoidance groove 6 during the process of compensating displacement of the elastomer 3. In other words, the protrusion 12 will never contact the base 30, so that the protrusion 12 will not interfere with the elastic deformation of the elastomer 3, thereby ensuring that the elastomer 3 can have sufficient buffering and shock absorbing effects.

[0089] In some implementations, reference Figure 2 As shown, the notch of the avoidance groove 6 faces the base 30 , and the avoidance groove 6 can be formed as a mouth-shaped groove, for example.

[0090] In some other implementations, reference Figure 4 As shown, one side wall of the avoidance groove 6 or a group of opposite walls is open, and the opening is connected to the groove opening of the avoidance groove 6, and the avoidance groove 6 is formed into a C-shaped groove or a U-shaped groove.

[0091] In some embodiments, reference Figure 2 , Figure 4 and Figure 5 As shown, the battery pack mounting structure 10 also includes a connecting member 7. A connecting hole for the connecting member 7 to extend into is provided on the side of the protrusion 12 facing the base 30. The connecting member 7 is connected to the connecting hole, and the connecting member 7 is stopped at the bottom of the avoidance groove 6, that is, the connecting member 7 is stopped at the side of the second avoidance through hole 22 away from the elastomer 3 to connect the first seat body 1 and the second seat body 2. An avoidance structure for avoiding the connecting member 7 is provided between the second seat body 2 and the base 30.

[0092] That is to say, the protrusion 12 and the second seat body 2 can be connected together through the connecting piece 7, that is, the first seat body 1 and the second seat body 2 are connected together. In this way, on the basis of the connection of the elastomer 3, the first seat body 1 and the second seat body 2 are also assembled together through the connecting piece 7, so that the two seats form an integral structure, which improves the load-bearing performance of the first seat body 1 and the second seat body 2, and further improves the structural strength and load-bearing performance of the battery pack mounting structure 10.

[0093] An avoidance structure for avoiding the connecting member 7 is provided between the second seat body 2 and the base 30. The connecting member 7 is located in the avoidance structure at least when the elastomer 3 undergoes elastic deformation. The avoidance structure provides an avoidance space for the connecting member 7. Therefore, the connecting member 7 will not interfere with the elastic deformation of the elastomer 3, thereby ensuring the buffering and shock absorbing performance of the elastomer 3.

[0094] In some implementations, reference Figure 2 As shown, the avoidance structure is an avoidance hole 301 opened at the position of the base 30 corresponding to the connecting member 7, and the aperture of the avoidance hole 301 is larger than the maximum dimension of the connecting member 7 in the direction parallel to the radial direction of the avoidance hole 301, so that the connecting member 7 can be inserted into the avoidance hole 301 and maintain a safe gap with the hole wall of the avoidance hole 301, so that when the elastomer 3 is elastically deformed by external force, the avoidance hole 301 provides an avoidance space for the connecting member 7, and the connecting member 7 will not contact the base 30, so that the connecting member 7 will not interfere with the elastic deformation of the elastomer 3, thereby ensuring the buffering and shock absorbing effect of the elastomer 3.

[0095] In some other implementations, the avoidance structure may also be an avoidance groove 6 provided on the side of the second seat body 2 facing the base support 30 for the protrusion 12 to extend into, and the avoidance groove 6 has a greater groove depth, and the connecting member 7 is always located in the avoidance groove 6. Specifically, when the elastomer 3 undergoes the maximum deformation, the side of the connecting member 7 facing the base support 30 is located in the avoidance groove. In this way, when the elastomer 3 undergoes the maximum deformation, the connecting member 7 will not interfere with the elastomer 3.

[0096] In some implementations, referenceFigure 2 and Figure 5 As shown in Figure 5 , a stopper, such as a gasket, is also clamped between the connecting member 7 and the bottom of the avoidance groove 6, which improves the connection stability between the connecting member 7 and the second seat body 2, thereby improving the connection stability and structural strength between the first seat body 1 and the second seat body 2.

[0097] In specific implementation, for example, internal threads can be provided on the inner wall of the connection hole, external threads are provided on the outer wall of the connecting member 7, and the first seat body 1 and the second seat body 2 are screwed together through the threaded fit between the connecting member 7 and the connection hole. The connection is convenient and firm, and it is easy to replace.

[0098] Of course, in some other implementation manners, the connecting member 7 and the connection hole can be riveted together, for example.

[0099] In some embodiments, as shown in Figure 4 and Figure 4 As shown, the first connection portion 11 includes a first mounting hole 111 and a first fastener 112. The first mounting hole 111 is at least provided on the first seat body 1, a first assembly hole matching the first mounting hole 111 is provided on the battery pack 20, and the first fastener 112 is passed through the first mounting hole 111 and the first assembly hole to connect the battery pack mounting structure 10 and the battery pack 20 together.

[0100] By providing the first mounting hole 111 on the first seat body 1, and the first mounting hole 111 matching the first assembly hole on the battery pack 20, when the first fastener 112 is connected in the first mounting hole 111 and the first assembly hole, the battery pack 20 can be assembled on the battery pack mounting structure 10. The structure is simple, the assembly is convenient, and the connection is stable and reliable.

[0101] In specific implementation, for example, internal threads can be provided on the inner wall of the first mounting hole 111, the first fastener 112 can be a bolt with external threads, and the battery pack 20 and the battery pack mounting structure 10 are connected together through the threaded fit between the bolt and the first mounting hole 111. The connection is convenient and firm. At the same time, if one of the battery pack 20 and the battery pack mounting structure 10 is damaged and needs to be replaced, only the bolt needs to be disassembled and separated from the first mounting hole 111, and the damaged one can be replaced. The replacement is convenient and the replacement cost is saved.

[0102] In some implementation manners, as shown in Figure 2 As shown, the connection hole on the convex portion 12 can be coaxially arranged and communicated with the first mounting hole 111, which is convenient to use.

[0103] In some embodiments, as shown in Figure 4 and Figure 4As shown, the second connecting portion 21 includes a second mounting hole 211 and a second fastener 212. The second mounting hole 211 is formed in the second seat body 2, and a second assembly hole matching the second mounting hole 211 is provided on the bottom bracket 30. The second fastener 212 is inserted through the second mounting hole 211 and the second assembly hole to connect the battery pack mounting structure 10 and the bottom bracket 30 together.

[0104] By forming the second mounting hole 211 in the second seat body 2 and matching the second mounting hole 211 with the second assembly hole on the bottom bracket 30, when the second fastener 212 is connected in the second mounting hole 211 and the second assembly hole, the battery pack mounting structure 10 and the bottom bracket 30 can be connected together. The structure is simple, the assembly is convenient, and the connection is stable and reliable.

[0105] In some implementation manners, the second fastener 212 can be, for example, a bolt. The battery pack mounting structure 10 and the bottom bracket 30 are connected together by the bolt. The connection is convenient and firm. At the same time, if one of the battery pack mounting structure 10 and the bottom bracket 30 is damaged and needs to be replaced, only by disassembling and separating the bolt from the second mounting hole 211 and the second assembly hole, the damaged one can be replaced. The replacement is convenient and the replacement cost is also saved.

[0106] In other implementation manners, the second fastener 212 can be, for example, a rivet. The battery pack mounting structure 10 and the bottom bracket 30 are connected together by the rivet.

[0107] In some embodiments, there are at least two second connecting portions 21, and the at least two second connecting portions 21 are arranged at intervals along the circumferential direction of the second seat body 2.

[0108] That is to say, a plurality of second connecting portions 21 are arranged at intervals in the circumferential direction of the second seat body 2. Correspondingly, a plurality of second assembly holes are provided on the bottom bracket 30, and one second connecting portion 21 corresponds to one second assembly hole. In this way, the battery pack mounting structure 10 connected with the battery pack 20 can be mounted on the bottom bracket 30 through multiple sets of matching second connecting portions 21 and second assembly holes, which improves the connection strength between the battery pack mounting structure 10 and the bottom bracket 30, thereby improving the connection strength and connection stability between the battery pack 20 and the bottom bracket 30, and further avoiding the occurrence of the connection failure phenomenon between the battery pack 20 and the bottom bracket 30.

[0109] In some embodiments, the elastomer 3 includes rubber, and the structure is simple and easy to implement. In other embodiments, the elastomer 3 can also be an elastomer made of a composite material, for example.

[0110] In some embodiments, the first seat body 1 includes a metal seat body. The first seat body 1 can be, for example, a steel seat body, an aluminum seat body, etc., which has high load-bearing performance and good weather resistance. Of course, in other embodiments, the first seat body 1 can also be an engineering plastic, for example.

[0111] In some embodiments, the second seat body 2 includes a metal seat body. The second seat body 2 can be, for example, a steel seat body, an aluminum seat body, etc., which has high load-bearing performance and good weather resistance. Of course, in other embodiments, the second seat body 2 can also be, for example, an engineering plastic.

[0112] In some embodiments, the elastomer 3 is bonded to the first seat body 1, which is convenient for connection and assembly.

[0113] Specifically, the elastomer 3 and the first seat body 1 can be connected together by vulcanization bonding, for example. Vulcanization bonding makes the elastomer 3 and the first seat body 1 form an integral structure with relatively high structural strength.

[0114] Of course, in other implementation manners, the elastomer 3 and the first seat body 1 can also be bonded together by structural adhesive, for example.

[0115] Vulcanization bonding is based on the dual effects of chemistry and physics to tightly bond elastomers such as rubber with metals or other materials. Vulcanization is a key step in rubber processing. By adding sulfur or other vulcanizing agents and heating, the rubber forms a cross-linked network structure, thereby improving its physical and chemical properties. When the rubber contacts the surface of the metal or other materials during vulcanization, the two can achieve effective and stable bonding.

[0116] In some embodiments, the elastomer 3 is bonded to the second seat body 2, which is convenient for connection and assembly.

[0117] Specifically, the elastomer 3 and the second seat body 2 can be connected together by vulcanization bonding, for example. Vulcanization bonding makes the elastomer 3 and the second seat body 2 form an integral structure with relatively high structural strength.

[0118] Of course, in other implementation manners, the elastomer 3 and the second seat body 2 can also be bonded together by structural adhesive, for example.

[0119] It can be understood that the elastomer 3 can be vulcanization-bonded only to the first seat body 1, or only to the second seat body 2, or vulcanization-bonded to both the first seat body 1 and the second seat body 2 at the same time.

[0120] This embodiment also provides a new energy commercial vehicle, which includes a chassis 30, a battery pack 20, and a battery pack mounting structure 10. The battery pack 20 is mounted on the chassis 30 through the battery pack mounting structure 10.

[0121] Specifically, the new energy commercial vehicle further includes a vehicle frame, and the chassis 30 is disposed on the vehicle frame. The battery pack 20 is mounted on the chassis 30 through the battery pack mounting structure 10 to realize the assembly of the battery pack 20 on the vehicle frame.

[0122] In some embodiments, referring to Figure 1 and Figure 3 as shown, there are at least two battery pack mounting structures 10, and the at least two battery pack mounting structures 10 are arranged at intervals along the circumference of the bottom tray 30.

[0123] By providing a plurality of battery pack mounting structures 10, the battery packs 20 can be assembled on the bottom tray 30 through the plurality of battery pack mounting structures 10, further enhancing the connection strength and connection stability between the battery packs 20 and the bottom tray 30.

[0124] The specific structure and implementation principle of the battery pack mounting structure in this embodiment are the same as those of the battery pack mounting structure provided in the above embodiment, and can bring the same or similar technical effects, which will not be elaborated one by one here. For details, reference can be made to the description of the above embodiment.

Claims

1. A battery pack mounting structure, characterized in that, Comprising: A first base body (1), on which a first connecting portion (11) is provided, and the first connecting portion (11) is used for connecting with a battery pack (20) to be installed; A second base body (2), on which a second connecting portion (21) is provided, and the second connecting portion (21) is used for connecting with a vehicle underframe (30); An elastic body (3), arranged between the first base body (1) and the second base body (2), and respectively connected with the first base body (1) and the second base body (2), and the elastic body (3) can at least elastically deform in the direction opposite to the battery pack (20) and the underframe (30) to play a buffering role between the battery pack (20) and the underframe (30).

2. The battery pack mounting structure according to claim 1, wherein, On one side of the elastic body (3) facing the first base body (1), a first accommodating groove (4) is provided, and at least part of the first base body (1) is arranged in the first accommodating groove (4).

3. The battery pack mounting structure according to claim 2, wherein, In the direction from the first base body (1) to the second base body (2), at least part of the side wall of the first accommodating groove (4) is inclined towards the direction of mutual approach, and the outer contour of the first base body (1) matches the shape of the first accommodating groove (4).

4. The battery pack mounting structure according to claim 1, wherein, On one side of the second base body (2) facing the elastic body (3), a second accommodating groove (5) is provided, and at least part of the elastic body (3) is arranged in the second accommodating groove (5).

5. The battery pack mounting structure according to claim 4, characterized in that, In the direction from the first base body (1) to the second base body (2), at least part of the side wall of the second accommodating groove (5) is inclined towards the direction of mutual approach, and the outer contour of the side of the elastic body (3) facing the second base body (2) matches the shape of the second accommodating groove (5).

6. The battery pack mounting structure according to claim 1, characterized in that The first base body (1) has a convex portion (12) extending towards the second base body (2), a first avoiding through hole (31) for the convex portion (12) to pass through is formed on the elastic body (3), a second avoiding through hole (22) for the convex portion (12) to pass through is formed on the second base body (2), the first avoiding through hole (31) and the second avoiding through hole (22) are coaxially arranged, and the convex portion (12) is at least in clearance fit with the second avoiding through hole (22).

7. The battery pack mounting structure according to claim 6, wherein, On one side of the second base body (2) for facing the underframe (30), an avoiding groove (6) for the convex portion (12) to extend into is formed, at least part of the notch of the avoiding groove (6) is for facing the underframe (30), and the depth of the avoiding groove (6) is greater than the maximum deformation amount of the elastic body (3).

8. The battery pack mounting structure according to claim 7, wherein, The battery pack mounting structure further includes a connecting member (7); On the side of the convex portion (12) facing the underframe (30), a connecting hole for the connecting member (7) to extend into is formed, the connecting member (7) is connected with the connecting hole, and the connecting member (7) is stopped at the bottom of the avoiding groove (6) to connect the first base body (1) and the second base body (2), and an avoiding structure for avoiding the connecting member (7) is provided between the second base body (2) and the underframe (30).

9. The battery pack mounting structure according to any one of claims 1 to 8, characterized in that The first connecting portion (11) includes a first mounting hole (111) and a first fastener (112); The first mounting hole (111) is at least formed on the first seat body (1), and a first assembly hole matching the first mounting hole (111) is provided on the battery pack (20). The first fastener (112) is inserted through the first mounting hole (111) and the first assembly hole to connect the battery pack mounting structure to the battery pack (20).

10. The battery pack mounting structure according to any one of claims 1 to 8, characterized in that The second connecting portion (21) includes a second mounting hole (211) and a second fastener (212); The second mounting hole (211) is formed on the second seat body (2), and a second assembly hole matching the second mounting hole (211) is provided on the bottom bracket (30). The second fastener (212) is inserted through the second mounting hole (211) and the second assembly hole to connect the battery pack mounting structure to the bottom bracket (30).

11. The battery pack mounting structure according to any one of claims 1 to 8, characterized in that, There are at least two second connecting portions (21), and at least two second connecting portions (21) are arranged at intervals along the circumferential direction of the second seat body (2).

12. The battery pack mounting structure according to any one of claims 1 to 8, characterized in that, The elastic body (3) is bonded to the first seat body (1); and / or, the elastic body (3) is bonded to the second seat body (2); and / or, the elastic body (3) includes rubber; and / or, the first seat body (1) includes a metal seat body; and / or, the second seat body (2) includes a metal seat body.

13. A new energy commercial vehicle, characterized in that, It includes a bottom bracket (30), a battery pack (20), and a battery pack mounting structure (10) according to any one of claims 1 to 12; The battery pack (20) is mounted on the bottom bracket (30) through the battery pack mounting structure (10).

14. The new energy commercial vehicle according to claim 13, wherein, There are at least two battery pack mounting structures (10), and at least two battery pack mounting structures (10) are arranged at intervals on opposite sides of the bottom bracket (30).

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