Battery pack mounting structure, automobile body and automobile

Abstract

The utility model relates to a battery pack mounting structure, an automobile body and an automobile, the battery pack mounting structure comprises a battery connecting beam and an automobile body longitudinal beam, the battery connecting beam is used for being connected with a battery pack, and first connecting parts are arranged at the two ends of the battery connecting beam; the vehicle body longitudinal beams are arranged on the two sides of the lower vehicle body, a plurality of installation bosses are integrally arranged on the vehicle body longitudinal beams, the installation bosses are sequentially arranged in the length direction of the vehicle body longitudinal beams, and the installation bosses are used for being connected with the first connecting parts. A plurality of battery connecting beam mounting points can be formed in the length direction of the longitudinal beam of the vehicle body through the mounting bosses, so that when battery packs with different sizes are required to be mounted, only the mounting positions of the battery connecting beams on the vehicle body need to be changed, and the first connecting parts at the two ends of the battery connecting beams are connected with the mounting bosses at different positions; therefore, the battery packs with different sizes can be mounted, and serialized matching of the battery packs in the length direction can be realized, so that mounting of the battery packs with different sizes in one vehicle body state is ensured.

Description

Technical Field

[0001] This application relates to the field of electric vehicle technology, specifically to a battery pack mounting structure, a vehicle body, and an automobile. Background Technology

[0002] With the development of electric vehicle technology and the gradual popularization of new energy vehicles, more and more cars are equipped with EV (electric vehicle) battery packs. In order to meet the needs of different driving ranges, it is often necessary to configure multiple battery packs of different sizes on the same model, which brings challenges to the overall vehicle design, especially the body design, which requires different battery pack mounting structures in the same model.

[0003] During installation, the battery pack is usually installed in the lower body of the vehicle. If multiple states of the lower body are designed to accommodate batteries of different sizes, it will bring high costs to the manufacturing of the lower body and make the manufacturing process control more complicated. Utility Model Content

[0004] One objective of this application is to provide a battery pack mounting structure to solve the technical problem of high cost in the prior art for the same vehicle model to accommodate battery packs of different sizes; another objective is to provide a vehicle body; and a third objective is to provide an automobile.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] A battery pack mounting structure includes a battery connecting beam for connecting to a battery pack, wherein the battery connecting beam has first connecting portions at both ends;

[0007] The vehicle body longitudinal beam is disposed on both sides of the lower vehicle body. Multiple mounting bosses are integrally provided on the vehicle body longitudinal beam, and the multiple mounting bosses are arranged sequentially along the length direction of the vehicle body longitudinal beam. The mounting bosses are used to connect with the first connecting part.

[0008] Based on the aforementioned technical means, multiple battery connecting beam mounting points can be formed along the length of the vehicle body longitudinal beam using multiple mounting bosses. This allows for the installation of battery packs of different lengths. When faced with the installation requirements of battery packs of different sizes, it is only necessary to change the mounting position of the battery connecting beam on the vehicle body, so that the first connecting parts at both ends of the battery connecting beam connect with mounting bosses at different positions on the vehicle body longitudinal beam. This enables the installation of battery packs of different sizes, allowing for serialized matching of battery packs along the length direction. This ensures the installation of battery packs of different sizes under one vehicle body condition, improves the versatility of the vehicle body, and reduces the manufacturing cost of the same type of vehicle body.

[0009] Furthermore, the mounting boss has a positioning surface that protrudes from the longitudinal beam of the vehicle body on the side facing the battery pack mounting beam.

[0010] Based on the above technical means, the positioning surface can be used to achieve precise positioning and installation with the battery pack mounting beam. Only the machining accuracy of the positioning surface needs to be guaranteed to ensure the connection accuracy between the battery connecting beam and the mounting boss and the vehicle body longitudinal beam. There is no need to perform fine machining on the entire lower body. The overall connection accuracy of the battery pack mounting structure can be improved by improving the local accuracy (i.e., the accuracy of the positioning surface).

[0011] Furthermore, the mounting boss is provided with a first through hole, and a first nut is provided on the side of the first through hole facing away from the first connecting part.

[0012] The above-mentioned technical means enable the battery connecting beam to be fastened to the mounting boss by means of the first bolt and the first nut.

[0013] Furthermore, the battery connecting beam is a tubular beam, and the first connecting part includes a second through hole and a bushing. The bushing is disposed inside the tubular beam, and the second through hole is coaxially disposed with the bushing.

[0014] Based on the aforementioned technical methods, since the battery connecting beam is a tubular beam with a hollow structure for battery pack installation, weight is significantly reduced while ensuring strength, which is beneficial for ensuring the driving range of electric vehicles. Furthermore, the tubular structure possesses excellent bending and torsional resistance, effectively withstanding the dynamic loads of the battery pack under complex operating conditions. In the event of a collision, the tubular beam can absorb energy through axial crushing and localized plastic deformation, reducing the impact force on the battery pack. The bushing is located inside the tubular beam, and the second through hole is coaxially aligned with the bushing, ensuring that connecting components (such as the first bolt) can accurately pass through the tubular beam, avoiding assembly difficulties or stress concentration caused by eccentricity. The bushing can also strengthen the connection strength of the first connecting part.

[0015] Furthermore, the tubular beam includes a first sidewall and a second sidewall disposed opposite to each other, and the two ends of the bushing abut against the first sidewall and the second sidewall, respectively.

[0016] According to the above technical means, the two ends of the bushing abut against the first side wall and the second side wall respectively, which can realize the support function of the tubular beam. When the tubular beam is pressed and connected by the first bolt, it can prevent the tubular beam from deforming.

[0017] Furthermore, the battery connecting beam is also provided with a plurality of second connecting parts, which are used to connect with the battery pack; the plurality of second connecting parts are disposed between two first connecting parts, and the plurality of second connecting parts are arranged sequentially along the length direction of the battery connecting beam.

[0018] According to the above technical means, multiple second connecting parts are arranged between two first connecting parts, which can avoid interference between the connection between the battery connecting beam and the battery pack and between the battery pack mounting beam and the vehicle body longitudinal beam; and multiple second connecting parts are arranged sequentially along the length direction of the battery connecting beam for connecting with the battery pack, which can form multiple battery pack connection points, thereby realizing the tight connection between the battery pack and the battery connecting beam, and fixing the battery pack on the lower vehicle body through the battery connecting beam.

[0019] Furthermore, the second connecting portion includes a third through hole and a second nut, the second nut being disposed inside the tubular beam, and the third through hole being coaxially disposed with the second nut.

[0020] According to the above technical means, when the battery pack is connected to the second connecting part by the second bolt, the second nut inside the tubular beam can be used to achieve a threaded connection with the second bolt, thereby realizing a tight connection between the battery pack and the battery connecting beam.

[0021] Furthermore, the tubular beam has a reinforcing rib structure inside.

[0022] Based on the above technical means, the bending and torsional resistance of the battery connecting beam (i.e., tubular beam) can be significantly improved, thereby effectively resisting the deformation of the battery connecting beam caused by vehicle vibration or collision.

[0023] A vehicle body, including a lower body and the aforementioned battery pack mounting structure.

[0024] Based on the above technical means, the battery pack is installed on the lower body of the vehicle body through the battery pack mounting structure. The lower body frame (such as door sill beams and longitudinal beams) can provide physical protection for the battery pack, which can improve the stability and safety of the battery pack installation.

[0025] Furthermore, the front end of the lower body is provided with a battery pack connection part, and the rear end of the battery pack is detachably connected to the battery connecting beam; the battery connecting beam is detachably connected to the longitudinal beam of the vehicle body.

[0026] Based on the aforementioned technical means, the battery pack can be fixedly connected to the lower vehicle body at both ends via the battery pack connecting part and the battery connecting beam, respectively. Furthermore, the connections between the battery pack and the battery connecting beam, and between the battery connecting beam and the vehicle body longitudinal beams, are detachable, allowing for the individual replacement of faulty battery packs or battery connecting beams. This enables rapid maintenance and replacement of the battery pack or its mounting structure, reducing maintenance costs.

[0027] A type of automobile has the aforementioned body structure.

[0028] Based on the above-mentioned technical means, the installation requirements of battery packs of different sizes can be met by using the same vehicle model, thereby meeting different driving range requirements and reducing the production and manufacturing costs of automobiles.

[0029] The beneficial effects of this application are:

[0030] (1) This application forms multiple battery connecting beam mounting positions along the length of the vehicle body by using multiple mounting bosses on the longitudinal beams of the vehicle body. When the battery pack is short, it can be connected to the battery connecting beam through the mounting boss near the front of the vehicle, thereby enabling the installation of a short battery pack. When the battery pack is long, it can be connected to the battery connecting beam through the mounting boss near the rear of the vehicle, thereby enabling the installation of a long battery pack. The same vehicle model can meet the installation requirements of battery packs of different sizes.

[0031] (2) This application integrates the mounting boss onto the vehicle body longitudinal beam, leveraging the strength advantage of the longitudinal beam to improve the overall strength of the battery pack mounting structure and ensure the stability of the battery pack during vehicle operation. Simultaneously, the integrated design reduces the need for additional mounting brackets or structures, saving space and improving space utilization, allowing sufficient installation space for components such as the battery pack and motor. In the event of a vehicle collision, the vehicle body longitudinal beam absorbs and disperses the impact force; integrating the mounting boss onto the longitudinal beam allows the battery pack to better withstand collision impacts, reducing the risk of battery pack damage and thus improving vehicle safety. Attached Figure Description

[0032] Figure 1 This is a schematic diagram illustrating the arrangement of the battery connecting beam provided in an embodiment of this application.

[0033] Figure 2 Partial cross-sectional view of the longitudinal beam of the vehicle body provided in the embodiments of this application. Figure 1 ;

[0034] Figure 3 Partial cross-sectional view of the battery pack mounting structure provided in the embodiments of this application. Figure 1 ;

[0035] Figure 4 A cross-sectional view of the mounting boss and the first nut provided in an embodiment of this application;

[0036] Figure 5 Partial cross-sectional view of the longitudinal beam of the vehicle body provided in the embodiments of this application. Figure 2 ;

[0037] Figure 6 This is a schematic diagram of the structure of the battery connecting beam provided in an embodiment of this application;

[0038] Figure 7This is a cross-sectional view of the connection between the battery connecting beam and the battery pack provided in an embodiment of this application;

[0039] Figure 8 A schematic diagram of the vehicle body provided in the embodiments of this application. Figure 1 ;

[0040] Figure 9 A schematic diagram of the vehicle body provided in the embodiments of this application. Figure 2 .

[0041] Wherein, 1-battery connecting beam; 11-first connecting part; 111-second through hole; 112-bushing; 12-second connecting part; 121-third through hole; 122-second nut; 13-first bolt; 14-second bolt;

[0042] 2-Longitudinal beam of the vehicle body; 21-Mounting boss; 211-Positioning surface; 212-First through hole; 213-First curved surface; 214-Second curved surface; 22-First nut;

[0043] 3-Lower body;

[0044] 4-Battery pack. Detailed Implementation

[0045] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0046] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0047] This embodiment proposes a battery pack mounting structure, including a battery connecting beam 1 and a vehicle body longitudinal beam 2. The battery connecting beam 1 is used to connect to the battery pack 4, and also to connect the battery pack 4 to the vehicle body longitudinal beam 2 of the lower vehicle body 3, so as to fix the battery pack 4 to the lower vehicle body 3. The battery connecting beam 1 has first connecting portions 11 at both ends for connecting to the vehicle body longitudinal beam 2 on the lower vehicle body 3, such as... Figure 1 and Figure 6 As shown.

[0048] The longitudinal beams 2 are located on both sides of the lower body 3, extending along the longitudinal direction (i.e., the length direction of the vehicle body), and provide the main structural support for the vehicle. Multiple mounting bosses 21 are integrally provided on the longitudinal beams 2, and these mounting bosses 21 are arranged sequentially along the length direction of the longitudinal beams 2. The mounting bosses 21 are used to connect with the first connecting part 11, forming multiple battery connecting beam 1 mounting points along the length direction of the longitudinal beams 2, thereby accommodating the installation of battery packs 4 of different lengths and sizes, such as... Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown.

[0049] It should be noted that in the above battery pack installation structure, when facing the installation requirements of battery packs 4 of different sizes, it is only necessary to change the installation position of the battery connecting beam 1 on the vehicle body, so that the first connecting part 11 at both ends of the battery connecting beam 1 is connected to the mounting boss 21 at different positions, thereby realizing the installation of battery packs 4 of different sizes. This can achieve serialized matching of battery packs 4 in the length direction, thereby ensuring the installation of battery packs 4 of different sizes in the same vehicle body 3 state (i.e., the same type of vehicle model), improving the universality of the vehicle body 3, and reducing the manufacturing cost of the vehicle body 3 of the same type of vehicle model.

[0050] As the main load-bearing component of the vehicle frame, the longitudinal beam 2 possesses sufficient strength and rigidity. This application integrates the mounting boss 21 onto the longitudinal beam 2, leveraging its inherent strength to enhance the overall strength of the battery pack mounting structure and ensure the stability of the battery pack 4 during vehicle operation. Simultaneously, the integrated design reduces the need for additional mounting brackets or structures, saving space and improving space utilization, allowing sufficient installation space for components such as the battery pack 4 and the motor. In the event of a collision, the longitudinal beam 2 absorbs and disperses impact forces; integrating the mounting boss 21 onto the longitudinal beam allows the battery pack 4 to better withstand collision impacts, reducing the risk of damage and thus improving vehicle safety.

[0051] In some embodiments of this application, multiple mounting bosses 21 are symmetrically arranged on the longitudinal beams 2 of the vehicle body 3 on the left and right sides. This ensures that the battery connecting beam 1 remains parallel to the width direction of the vehicle body when connected to the mounting bosses 21 on the left and right sides, thereby guaranteeing the installation state of the battery pack 4 in the lower vehicle body 3 and preventing the battery pack 4 from tilting relative to the lower vehicle body 3. Figure 1 , Figure 8 and Figure 9 As shown.

[0052] As a specific embodiment of this application, please refer to Figure 1 , Figure 2 , Figure 8 and Figure 9 Two mounting protrusions 21 are provided on the longitudinal beams 2 of the vehicle body on both the left and right sides (i.e., in the width direction of the vehicle body) of the lower body 3, which can be used to form the mounting positions of the front and rear battery packs 4; Figure 1 , Figure 8 and Figure 9 The left side is considered the front direction of the vehicle, and the right side is considered the rear direction. When the battery pack 4 is short, it can be connected to the battery connecting beam 1 through the mounting boss 21 near the front of the vehicle, thus enabling the installation of the short battery pack 4. Figure 8 As shown. When the battery pack 4 is long, it can be connected to the battery connecting beam 1 via the mounting boss 21 near the rear of the vehicle, thereby enabling the installation of the long battery pack 4, as shown. Figure 9 As shown.

[0053] It should be noted that the number and spacing of mounting bosses 21 on the same vehicle body longitudinal beam 2 can be set according to the number and size of the battery pack 4 corresponding to the same vehicle model, and are not limited here.

[0054] In some embodiments of this application, please refer to Figure 3 and Figure 4 The mounting boss 21 has a positioning surface 211 protruding from the vehicle body longitudinal beam 2 on the side facing the battery connecting beam 1, which can be used to achieve precise positioning and installation with the battery connecting beam 1. Only the machining accuracy of the positioning surface 211 needs to be guaranteed to ensure the connection accuracy between the battery connecting beam 1, the mounting boss 21, and the vehicle body longitudinal beam 2. There is no need to perform fine machining on the entire lower vehicle body 3. The overall connection accuracy of the battery pack mounting structure can be improved by improving the local accuracy (i.e., the accuracy of the positioning surface 211).

[0055] In some embodiments of this application, please refer to Figure 3 and Figure 4 The mounting boss 21 is provided with a first through hole 212, and a first nut 22 is provided on the side of the first through hole 212 facing away from the first connecting part 11, so that the battery connecting beam 1 can be fastened to the mounting boss 21 by the first bolt 13 and the first nut 22.

[0056] Specifically, the first bolt 13 passes through the first connecting part 11 and the first through hole 212 in sequence, and is threadedly connected to the first nut 22, thereby ensuring a tight fit between the top of the battery connecting beam 1 and the positioning surface 211 of the mounting boss 21. The first nut 22 can be fixed to the side of the mounting boss 21 facing away from the battery connecting beam 1 by welding or other methods, preventing the first nut 22 from moving during vehicle operation and thus affecting the installation stability of the battery pack 4.

[0057] In some embodiments of this application, please refer to Figure 4The mounting boss 21 and the vehicle body longitudinal beam 2 are connected by a curved surface, which can avoid stress concentration at the edge of the mounting boss 21 when the battery connecting beam 1 and the battery pack 4 are hoisted through the mounting boss 21. This can improve the stress distribution at the edge of the mounting boss 21 and enhance the structural reliability of the mounting boss 21.

[0058] Specifically, the upper surface of the mounting boss 21 is connected to the main body of the vehicle longitudinal beam 2 through the first curved surface 213, and the lower surface of the mounting boss 21 is connected to the main body of the vehicle longitudinal beam 2 through the second curved surface 214. This can prevent the edge of the mounting boss 21 from tearing due to stress concentration under the gravity of the battery connecting beam 1 and the battery pack 4.

[0059] In some embodiments of this application, please refer to Figure 3 and Figure 6 The battery connecting beam 1 is a tubular beam with a hollow structure for mounting the battery pack 4. This significantly reduces weight while maintaining strength, which is beneficial for ensuring the driving range of the electric vehicle. Furthermore, the tubular structure possesses excellent bending and torsional resistance, effectively withstanding the dynamic loads of the battery pack 4 under complex operating conditions. In the event of a collision, the tubular beam can absorb energy through axial crushing and localized plastic deformation, reducing the impact force on the battery pack 4.

[0060] In some embodiments of this application, please refer to Figure 3 and Figure 7 The tubular beam has a rectangular cross-section, which is simple in structure and easy to manufacture, and can significantly reduce the manufacturing cost of the battery pack mounting structure. Moreover, the rectangular cross-section of the tubular beam can form a plane that mates with the positioning surface 211 on the side facing the mounting boss 21, which helps to ensure the fit between the tubular beam and the positioning surface 211, thereby ensuring the positioning accuracy between the battery connecting beam 1 and the positioning surface 211 of the mounting boss 21.

[0061] The first connecting part 11 includes a second through hole 111 and a bushing 112. The bushing 112 is disposed inside the tubular beam, and the second through hole 111 and the bushing 112 are coaxially arranged to ensure that the connecting parts (such as the first bolt 13) can pass through the tubular beam accurately, avoiding assembly difficulties or stress concentration caused by eccentricity; the bushing 112 can also strengthen the connection strength of the first connecting part 11.

[0062] In some embodiments of this application, please refer to Figure 3 The tubular beam includes a first sidewall and a second sidewall arranged opposite to each other. The two ends of the bushing 112 abut against the first sidewall and the second sidewall respectively, which can provide support for the interior of the tubular beam. When the tubular beam is pressed and connected by the first bolt 13, it can prevent the tubular beam from deforming.

[0063] As a specific embodiment of this application, the bushing 112 can be fixed inside the tubular beam by means of carbon dioxide shielded welding or other methods to prevent the bushing 112 from shifting during use. When the battery connecting beam 1 is connected to the vehicle body longitudinal beam 2 by the first bolt 13, the first bolt 13 extends from the bottom of the battery connecting beam 1, passes through the second through hole 111 on the first side wall, the bushing 112, the second through hole 111 on the second side wall and the first through hole 212 on the mounting boss 21 in sequence, and then achieves a threaded connection with the first nut 22.

[0064] In some embodiments of this application, please refer to Figure 6 , Figure 7 , Figure 8 and Figure 9 The battery connecting beam 1 is also provided with a plurality of second connecting parts 12, which are disposed between two first connecting parts 11 and are arranged sequentially along the length direction of the battery connecting beam 1 for connecting with the battery pack 4, thereby realizing the tight connection between the battery pack 4 and the battery connecting beam 1, and fixing the battery pack 4 on the lower vehicle body 3 through the battery connecting beam 1.

[0065] It should be noted that the first connecting part 11 is disposed at both ends of the battery connecting beam 1, and a plurality of second connecting parts 12 are disposed between the two first connecting parts 11, which can prevent interference between the connection between the battery connecting beam 1 and the battery pack 4 and between the battery connecting beam 1 and the vehicle body longitudinal beam 2.

[0066] In some embodiments of this application, please refer to Figure 7 The second connecting part 12 includes a third through hole 121 and a second nut 122. The second nut 122 is disposed inside the tubular beam, and the third through hole 121 and the second nut 122 are coaxially disposed. When the battery pack 4 is connected to the second connecting part 12 by the second bolt 14, the second nut 122 inside the tubular beam can be threaded to the second bolt 14, thereby achieving a tight connection between the battery pack 4 and the battery connecting beam 1.

[0067] In some embodiments of this application, please refer to Figure 7 The battery pack 4 is provided with a through hole for the second bolt 14 to pass through. The second nut 122 can be fixed inside the tubular beam near the battery pack 4 by welding or other means, which can prevent the second nut 122 from moving inside the tubular beam and ensure the connection stability between the battery pack 4 and the battery connecting beam 1.

[0068] It should be noted that the length direction of the battery connecting beam 1 is parallel to the width direction of the lower body 3. The multiple second connecting parts 12 provided on the battery connecting beam 1 can provide multiple mounting points for the battery pack 4 in the width direction of the lower body 3. Only one battery connecting beam 1 is needed to realize the installation of one end of the battery pack 4, which can effectively reduce the number of parts in the battery pack mounting structure.

[0069] The two ends of the battery connecting beam 1 are connected to the longitudinal beams 2 on both sides of the lower body 3, which can improve the structural strength of the battery pack installation structure. The weight of the battery pack 4 can be evenly transferred to the longitudinal beams 2 through the battery connecting beam 1, avoiding local stress concentration while forming a stable and balanced force transmission path.

[0070] In some embodiments of this application, the tubular beam is provided with a reinforcing rib structure (not shown in the figure), which can significantly improve the bending and torsional resistance of the battery connecting beam 1 (i.e., the tubular beam), thereby effectively resisting the deformation of the battery connecting beam 1 caused by vehicle vibration or collision.

[0071] It should be noted that the reinforcing rib structure can be in the form of straight reinforcing ribs, corrugated reinforcing ribs, etc. As long as it can improve the bending and torsional resistance of the battery connecting beam 1, it can achieve the purpose of this application.

[0072] Please see Figures 1 to 9 The second aspect of this application provides a vehicle body, including a lower body 3 and the battery pack mounting structure described in the above embodiments. The battery pack 4 is mounted on the lower body 3 of the vehicle body through the battery pack mounting structure, as shown below. Figure 8 and Figure 9 As shown, the battery pack 4 can be physically protected by the lower body frame 3 (such as the sill beam and the longitudinal beam 2), which can improve the stability and safety of the battery pack 4 installation.

[0073] It should be noted that the battery pack 4 can be connected to the lower body 3 via two battery connecting beams 1 during installation. In this case, the two battery connecting beams 1 are respectively set at the front and rear ends of the battery pack 4. Alternatively, the battery connecting beam 1 can be set only at one end of the battery pack 4 (such as the rear end), while the front end of the battery pack 4 is installed using the existing battery pack installation structure of the lower body 3. Both methods can achieve the purpose of this application.

[0074] In some embodiments of this application, please refer to Figure 8 and Figure 9The lower body 3 of the vehicle body has a battery pack connection part (not shown in the figure) at its front end. The rear end of the battery pack 4 is detachably connected to the battery connecting beam 1, and the battery connecting beam 1 is detachably connected to the vehicle body longitudinal beam 2. The battery pack 4 can be fixedly connected to the lower body 3 at both ends through the battery pack connection part and the battery connecting beam 1, respectively. Moreover, the connections between the battery pack 4 and the battery connecting beam 1, and between the battery connecting beam 1 and the vehicle body longitudinal beam 2, are all detachable. This allows for the individual replacement of the faulty battery pack 4 or the battery connecting beam 1, enabling rapid maintenance and replacement of the battery pack 4 or the battery pack mounting structure, thus reducing maintenance costs.

[0075] It should be noted that this application achieves the connection between the rear end of the battery pack 4 and the lower vehicle body 3 through the battery connecting beam 1, eliminating the need to manufacture additional body beams or mounting brackets on the lower vehicle body 3, thus simplifying the installation structure of the rear end of the battery pack 4.

[0076] Please see Figures 1 to 9 The third aspect of this application provides an automobile with a body as described in the above embodiments. It can meet the installation requirements of different sized battery packs 4 through the same vehicle model, thereby meeting different driving range requirements and reducing the production and manufacturing costs of the automobile.

[0077] The battery pack mounting structure of this application provides mounting points for the battery pack 4 at the rear of the vehicle via the battery connecting beam 1. When facing mounting requirements for battery packs 4 of different lengths, it can ensure that the lower body 3 and the battery connecting beam 1 can adapt to the mounting functions of various battery packs 4 in one state. At the same time, a series of adaptive matching of the battery pack 4 in the length and width directions is achieved through multiple mounting bosses 21 and multiple second connecting parts 12.

[0078] The above embodiments are merely preferred embodiments provided to fully illustrate this application, and the scope of protection of this application is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on this application are all within the scope of protection of this application.

Claims

1. A battery pack mounting structure, characterized in that, include: A battery connecting beam (1) is used to connect to a battery pack (4), and the two ends of the battery connecting beam (1) are provided with first connecting parts (11); The vehicle body longitudinal beam (2) is provided on both sides of the lower vehicle body (3). Multiple mounting bosses (21) are integrally provided on the vehicle body longitudinal beam (2), and the multiple mounting bosses (21) are arranged sequentially along the length direction of the vehicle body longitudinal beam (2). The mounting bosses (21) are used to connect with the first connecting part (11).

2. The battery pack mounting structure according to claim 1, characterized in that, The mounting boss (21) has a positioning surface (211) protruding from the longitudinal beam (2) of the vehicle body on the side facing the battery connecting beam (1).

3. The battery pack mounting structure according to claim 1, characterized in that, The mounting boss (21) is provided with a first through hole (212), and a first nut (22) is provided on the side of the first through hole (212) facing away from the first connecting part (11).

4. The battery pack mounting structure according to any one of claims 1 to 3, characterized in that, The battery connecting beam (1) is a tubular beam. The first connecting part (11) includes a second through hole (111) and a bushing (112). The bushing (112) is disposed inside the tubular beam, and the second through hole (111) and the bushing (112) are coaxially disposed.

5. The battery pack mounting structure according to claim 4, characterized in that, The tubular beam includes a first sidewall and a second sidewall disposed opposite to each other, and the two ends of the bushing (112) abut against the first sidewall and the second sidewall respectively.

6. The battery pack mounting structure according to claim 4, characterized in that, The battery connecting beam (1) is also provided with a plurality of second connecting parts (12), which are used to connect with the battery pack (4); the plurality of second connecting parts (12) are disposed between two first connecting parts (11), and the plurality of second connecting parts (12) are arranged sequentially along the length direction of the battery connecting beam (1).

7. The battery pack mounting structure according to claim 6, characterized in that, The second connecting part (12) includes a third through hole (121) and a second nut (122). The second nut (122) is disposed inside the tubular beam, and the third through hole (121) and the second nut (122) are coaxially disposed.

8. The battery pack mounting structure according to claim 4, characterized in that, The tubular beam has a reinforcing rib structure inside.

9. A vehicle body, characterized in that, It includes the lower body (3) and the battery pack mounting structure as described in any one of claims 1-8.

10. The vehicle body according to claim 9, characterized in that, The front end of the lower body (3) is provided with a battery pack connection part, and the rear end of the battery pack (4) is detachably connected to the battery connecting beam (1); the battery connecting beam (1) is detachably connected to the vehicle body longitudinal beam (2).

11. A car, characterized in that, It has a body as described in claim 9 or 10.

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