Mounting structure of battery pack assembly and vehicle

Abstract

The utility model relates to the technical field of vehicles, and particularly discloses a mounting structure of a battery pack assembly and a vehicle, the battery pack assembly is connected with a threshold assembly of the vehicle, the battery pack assembly comprises a battery pack framework, the threshold assembly comprises a threshold beam, and the battery pack framework is connected with the threshold beam through a bolt assembly; the threshold beam comprises a first edge beam and a second edge beam which are arranged in the width direction of the vehicle. The battery pack framework comprises a first battery pack framework and a second battery pack framework, the first battery pack framework is arranged at the bottom of the first edge beam, the second battery pack framework is arranged at the bottom of the second edge beam, and the second battery pack framework is fixedly connected with the bottom of the first battery pack framework; the bolt assembly comprises a first bolt and a second bolt which are arranged in the height direction of the vehicle, the first battery pack framework is connected with the first edge beam through the first bolt, and the second battery pack framework is connected with the second edge beam through the second bolt. The space utilization rate of the vehicle in the width direction can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a battery pack assembly mounting structure and vehicle. Background Technology

[0002] New energy vehicles are constantly striving for lightweight body designs to improve overall vehicle and battery safety, while maintaining cost control. Based on these requirements, it is necessary to achieve these goals through high structural integration and optimized stress paths without adding additional components.

[0003] In existing models, the battery frame flange is installed in the Z-direction with the door sill. However, the flange installation structure occupies a large amount of space in the Y-direction, encroaching on the space for cell placement and affecting the battery energy density. Utility Model Content

[0004] This application provides a battery pack assembly mounting structure and vehicle that integrates the battery pack frame with the vehicle door sill, thereby increasing the internal space of the battery pack and improving the rigidity of the entire structure.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include:

[0006] In a first aspect, embodiments of this application provide an installation structure for a battery pack assembly, wherein the battery pack assembly is connected to a sill assembly of a vehicle, the battery pack assembly includes a battery pack frame, the sill assembly includes a sill beam, and the battery pack frame is connected to the sill beam via a bolt assembly;

[0007] The door sill beam includes a first side beam and a second side beam arranged along the width direction of the vehicle, and the distance from the first side beam to the door is greater than the distance from the second side beam to the door; the battery pack frame includes a first battery pack frame and a second battery pack frame, the first battery pack frame is disposed at the bottom of the first side beam, the second battery pack frame is disposed at the bottom of the second side beam, and the bottom of the second battery pack frame is fixedly connected to the bottom of the first battery pack frame.

[0008] The bolt assembly includes a first bolt and a second bolt arranged along the height direction of the vehicle. The first battery pack frame is connected to the first side beam via the first bolt, and the second battery pack frame is connected to the second side beam via the second bolt. The length of the first bolt is greater than the length of the second bolt.

[0009] Furthermore, the sill beam also includes a first side beam and a second side beam arranged along the height direction of the vehicle, the distance between the first side beam and the second side beam being the total width of the sill beam in the width direction of the vehicle; the second side beam is arranged on the side of the sill beam away from the first battery pack frame;

[0010] The distance from the first bolt to the first side beam is 37 mm ± 2 mm; the distance from the second bolt to the second side beam is 33 mm ± 2 mm.

[0011] Furthermore, the ratio between the distance from the first bolt to the first side beam and the distance from the first bolt to the second side beam is 0.1-1;

[0012] The ratio between the distance from the first side beam to the top of the threshold beam and the distance from the first side beam to the bottom of the second battery pack frame is 0.1-1.

[0013] Furthermore, the ratio between the distance from the second bolt to the second side beam and the distance from the second bolt to the first side beam is 0.1-1;

[0014] The ratio between the distance from the second side beam to the bottom of the second battery pack frame and the distance from the second side beam to the top of the sill beam is 0.1-1.

[0015] Furthermore, there is a gap between the sill beam and the side of the first battery pack frame near the second bolt.

[0016] Furthermore, the width of the first battery pack frame in the width direction of the vehicle is 59 mm ± 2 mm.

[0017] Furthermore, the battery pack assembly also includes a battery top cover plate, which is connected to the top of the first battery pack frame by rivet bolts, and the battery top cover plate is located on the side of the first battery pack frame away from the second bolts.

[0018] Furthermore, the distance from the rivet bolt to the first side beam is 10 mm-11 mm.

[0019] Furthermore, the battery pack assembly also includes a lower battery guard plate, which is fixedly disposed at the bottom of the first battery pack frame, and the lower battery guard plate and the upper battery cover plate are disposed on the side of the first battery pack frame away from the second bolt;

[0020] The overlap width between the lower battery guard plate and the first battery pack frame is 15 mm ± 1 mm.

[0021] Secondly, embodiments of this application provide a vehicle including a mounting structure for the battery pack assembly described in any of the embodiments.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides an installation structure and vehicle for a battery pack assembly. The battery pack assembly is connected to the vehicle's door sill assembly. The battery pack assembly includes a battery pack frame, and the door sill assembly includes a door sill beam. The battery pack frame is connected to the door sill beam via a bolt assembly. The door sill beam includes a first side beam and a second side beam arranged along the width direction of the vehicle, and the distance from the first side beam to the door is greater than the distance from the second side beam to the door. The battery pack frame includes a first battery pack frame and a second battery pack frame. The first battery pack frame is located at the bottom of the first side beam, and the second battery pack frame is located at the bottom of the second side beam, and the bottom of the second battery pack frame is fixedly connected to the bottom of the first battery pack frame. The bolt assembly includes a first bolt and a second bolt arranged along the height direction of the vehicle. The first battery pack frame is connected to the first side beam via the first bolt, and the second battery pack frame is connected to the second side beam via the second bolt. The length of the first bolt is greater than the length of the second bolt. This invention integrates the battery pack frame with the vehicle sill, replacing part of the original sill structure with the battery pack frame. Double-row bolts connect the battery pack frame and the sill beam along the vehicle's height, achieving stable battery installation, improving structural rigidity, and effectively increasing Y-axis space utilization. Furthermore, the integration of the battery pack frame and the sill improves the sealing stability between the battery and the vehicle. By creating a material yield strength gradient between the sill and the battery pack frame, and aligning the force paths of the sill and the battery pack frame, a good energy absorption effect is achieved, enhancing safety performance. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the installation structure of a battery pack assembly provided by this utility model;

[0026] Figure 2 A schematic diagram of a battery mounting point provided by this utility model;

[0027] Figure 3 A schematic diagram of a door sill assembly and a battery pack assembly provided by this utility model;

[0028] Figure 4 A schematic diagram of a threshold and battery frame cross-section provided by this utility model;

[0029] Figure 5 An improved schematic diagram of the integration of a battery frame with a vehicle door sill provided by this utility model;

[0030] Figure 6 A schematic diagram of the material yield strength gradient of the threshold and battery frame provided by this utility model;

[0031] Figure 7 A schematic diagram of the collision transmission path between the threshold and the battery frame provided by this utility model;

[0032] Figure 8 A schematic diagram showing the location of the first installation point provided by this utility model;

[0033] Figure 9 A schematic diagram showing the location of a second mounting point provided by this utility model;

[0034] Figure 10 Another schematic diagram of the threshold and battery frame cross-section provided by this utility model;

[0035] Figure 11 A schematic diagram of another door sill assembly and battery pack assembly provided by this utility model;

[0036] Figure 12 This is a schematic diagram showing the distribution of battery mounting points provided by this utility model.

[0037] [Explanation of Labels in the Attached Image]

[0038] 1-Battery pack assembly, 11-First battery pack frame, 12-Second battery pack frame, 13-Battery top cover, 14-Battery bottom cover, 15-Battery crossbeam, 16-Weld.

[0039] 2-Sill assembly, 21-Sill beam, 211-First side beam, 212-Second side beam, 213-First side beam, 214-Second side beam, 22-First mounting point, 23-Second mounting point;

[0040] 3- Bolt assembly, 31- First bolt, 311- First nut, 312- First bolt sleeve, 313- First nut plate, 32- Second bolt, 321- Second nut, 322- Second bolt sleeve, 323- Second nut plate, 33- Rivet bolt. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0043] like Figures 1-12 As shown, this utility model provides an installation structure for a battery pack assembly. The battery pack assembly 1 is connected to the vehicle sill assembly 2. The battery pack assembly 1 includes a battery pack frame, and the sill assembly 2 includes a sill beam 21. The battery pack frame is connected to the sill beam 21 by a bolt assembly 3.

[0044] The aforementioned door sill beam 21 includes a first side beam 211 and a second side beam 212 arranged along the width direction of the vehicle, and the distance from the first side beam 211 to the door is greater than the distance from the second side beam 212 to the door; the aforementioned battery pack frame includes a first battery pack frame 11 and a second battery pack frame 12, the first battery pack frame 11 is disposed at the bottom of the first side beam 211, the second battery pack frame 12 is disposed at the bottom of the second side beam 212, and the second battery pack frame 12 is fixedly connected to the bottom of the first battery pack frame 11;

[0045] The bolt assembly 3 includes a first bolt 31 and a second bolt 32 arranged along the height direction of the vehicle. The first battery pack frame 11 is connected to the first side beam 211 by the first bolt 31, and the second battery pack frame 12 is connected to the second side beam 212 by the second bolt 32. The length of the first bolt 31 is greater than the length of the second bolt 32.

[0046] For example, in this application, the battery pack frame is integrated with the vehicle sill. To further improve the utilization of the vehicle's Y-axis space and ensure the overall structural rigidity, two battery pack mounting points are provided on the sill beam 21, such as... Figure 2 As shown, the two installation points are arranged diagonally, namely the first installation point 22 and the second installation point 23. Bolts are used to connect these two installation points, that is, double-row bolts in the Z direction are used to fix the battery pack frame to the sill beam 21, forming a stable connection structure, realizing the installation of the battery pack assembly 1, and improving the space utilization in the Y direction at the same time.

[0047] For example, the vehicle's door sill assembly 2 includes a door sill beam 21. The door sill beam 21 includes a first side beam 211 and a second side beam 212 arranged along the width direction of the vehicle. The first side beam 211 is closer to the interior of the vehicle body, and the second side beam 212 is closer to the door. The first side beam 211 is located diagonally above the second side beam 212. Figure 1 As shown, the battery pack mounting frame can include a first battery pack frame 11 and a second battery pack frame 12. The first battery pack mounting frame is located below the first side beam 211, and the second battery pack mounting frame is located below the second side beam 212. The bottom side of the first battery pack frame 11 is fixedly connected to the second battery pack frame 12. The first mounting point 22 is located on the first side beam 211, meaning the first bolt 31 can be set at the first mounting point 22 along the height direction of the vehicle. Thus, the first battery pack frame 11 is fixed to the sill beam 21 by the first bolt 31 set in the Z direction. The second mounting point 23 is located on the second side beam 212, meaning the second bolt 32 can be set at the second mounting point 23 along the height direction of the vehicle. The second battery pack frame 12 is fixed to the sill beam 21 by the second bolt 32. Thus, the battery pack assembly 1 is stably installed by two mounting points, one above the other and diagonally positioned, improving the structural rigidity and ensuring the sealing stability of the battery pack. The length of the first bolt 31 is greater than the length of the second bolt 32. In this invention, the Y direction is the width direction of the vehicle, and the Z direction is the height direction of the vehicle.

[0048] For example, in this application, the battery pack frame is integrated with the vehicle sill, and the battery pack frame replaces part of the original vehicle sill structure, such as... Figure 5As shown in the black dashed box, the internal space of the battery pack is maximized. The battery pack frame and the sill structure each maintain a specific distance ratio in both the height and width directions of the vehicle. Figure 5 As shown, in the width direction of the vehicle, the ratio between distance a and distance b is between 0.2 and 5, and in the height direction of the vehicle, the ratio between distance c and distance d is between 0.2 and 5. Furthermore, by selecting materials with different properties, a certain material strength gradient is formed in the Y-direction of the collision, such as... Figure 6 As shown, the vehicle body can be divided into three parts with different yield strengths from the door to the body: aluminum alloy yield strength (200 MPa-300 MPa), sheet metal yield strength (420 MPa-980 MPa), and hot-formed yield strength (980 MPa-1800 MPa), which improves energy absorption and effectively enhances safety performance.

[0049] In the embodiments of this application, Figure 7 This diagram illustrates the collision transmission path between the door sill and the battery pack frame during a collision. By integrating the battery pack frame with the door sill and replacing part of the original door sill structure with the battery pack frame, the force paths of the door sill and the battery pack frame are aligned. During a lateral collision, the force can be transmitted through three transmission paths. Furthermore, due to the certain material yield strength gradient between the door sill and the battery pack frame in the lateral direction, a good energy absorption effect can be achieved, improving safety performance.

[0050] Furthermore, the sill beam 21 also includes a first side beam 213 and a second side beam 214 arranged along the height direction of the vehicle. The distance between the first side beam 213 and the second side beam 214 is the total width of the sill beam 21 in the width direction of the vehicle. The second side beam 214 is arranged on the side of the sill beam 21 away from the first battery pack frame 11.

[0051] The distance from the first bolt 31 to the first side beam 213 is 37 mm ± 2 mm; the distance from the second bolt 32 to the second side beam 214 is 33 mm ± 2 mm.

[0052] For example, the aforementioned sill beam 21 may further include a first side beam 213 and a second side beam 214 disposed along the height direction of the vehicle, such as... Figure 4As shown, the first side beam 213 is the sill beam away from the door, and the second side beam 214 is the sill beam closer to the door. The distance between the first side beam 213 and the second side beam 214 is the total width of the sill beam 21 in the width direction of the vehicle. To ensure the installation stability of the battery pack and improve the rigidity of the entire structure, the position of the battery pack mounting points on the sill beam 21 is particularly important. Specifically, the distance from the first mounting point 22 to the first side beam 213 can be 37 mm ± 2 mm, and the distance from the second mounting point 23 to the second side beam 214 can be 33 mm ± 2 mm. In an exemplary embodiment, the distance from the first mounting point 22 to the first side beam 213 is 37 mm, and the distance from the second mounting point 23 to the second side beam 214 is 33 mm.

[0053] For example, since the battery pack frame and the sill beam 21 are connected by bolt assembly 3, the location of the aforementioned mounting point can be understood as follows: the distance from the first bolt 31 to the first side beam 213 can be 37 mm ± 2 mm, and the distance from the second bolt 32 to the second side beam 214 can be 33 mm ± 2 mm. In an exemplary embodiment, the distance from the first bolt 31 to the first side beam 213 is 37 mm, and the distance from the second bolt 32 to the second side beam 214 is 33 mm.

[0054] This invention achieves a stable connection between the battery pack frame and the sill beam 21 by setting two mounting points on the sill beam 21 and using double-row bolts arranged along the height direction of the vehicle at the corresponding mounting points, thereby improving the utilization rate of space in the Y direction.

[0055] Furthermore, the ratio between the distance from the first bolt 31 to the first side beam 213 and the distance from the first bolt 31 to the second side beam 214 is 0.1-1;

[0056] The ratio between the distance from the first side beam 211 to the top of the threshold beam 21 and the distance from the first side beam 211 to the bottom of the second battery pack frame 12 is 0.1-1.

[0057] For example, in order to more accurately determine the location of the battery pack mounting point, such as Figure 8As shown, the first mounting point 22 can satisfy the following conditions: in the width direction of the vehicle, the distance from the first mounting point 22 to the first side beam 213 is e, and the distance from the first mounting point 22 to the second side beam 214 is f, with the ratio between e and f being between 0.1 and 1; in the height direction of the vehicle, the distance from the first mounting point 22 to the top of the sill beam 21 is g, and the distance from the first mounting point 22 to the bottom of the battery pack frame is h, with the ratio between g and h being between 0.1 and 1. The widest point of the first side beam 213 of the sill beam 21 is aligned with the side of the first battery pack frame 11 furthest from the door.

[0058] In this utility model, the first bolt 31 is set at the first mounting point 22, and the first bolt 31 is set along the height direction of the vehicle. Therefore, the position of the first mounting point 22 can be understood as the ratio between the distance from the first bolt 31 to the first side beam 213 and the distance from the first bolt 31 to the second side beam 214 being between 0.1 and 1.

[0059] This utility model clarifies the position of the first mounting point 22, ensuring that the battery pack can be accurately and stably connected to the sill beam 21.

[0060] Furthermore, the ratio between the distance from the second bolt 32 to the second side beam 214 and the distance from the second bolt 32 to the first side beam 213 is 0.1-1;

[0061] The ratio between the distance from the second side beam 212 to the bottom of the second battery pack frame 12 and the distance from the second side beam 212 to the top of the threshold beam 21 is 0.1-1.

[0062] For example, similar to the first mounting point 22 described above, such as Figure 9 As shown, the second mounting point 23 can satisfy the following conditions: in the width direction of the vehicle, the distance from the second mounting point 23 to the second side beam 214 is i, and the distance from the second mounting point 23 to the first side beam 213 is j, with the ratio between i and j being between 0.1 and 1; in the height direction of the vehicle, the distance from the second mounting point 23 to the bottom of the battery pack frame is k, and the distance from the second mounting point 23 to the top of the sill beam 21 is l, with the ratio between k and l being between 0.1 and 1.

[0063] In this utility model, the second bolt 32 is set at the second mounting point 23, and the second bolt 32 is set along the height direction of the vehicle. Therefore, the position of the second mounting point 23 can be understood as the ratio between the distance of the second bolt 32 to the second side beam 214 and the distance of the second bolt 32 to the first side beam 213 being between 0.1 and 1.

[0064] This utility model clarifies the position of the second mounting point 23, ensuring that the battery pack can be accurately and stably connected to the sill beam 21.

[0065] This utility model sets two mounting points on the sill beam 21, one at the top and one at the bottom, and uses double rows of bolts arranged in the Z direction to cooperate with each other to form a stable connection structure between the battery pack frame and the sill beam 21, thereby improving the rigidity of the sill assembly 2 and ensuring the sealing stability of the battery pack.

[0066] For example, such as Figure 10 As shown, the bolt assembly 3 may also include a first nut 311, a first bolt sleeve 312 and a first nut plate 313 adapted to the first bolt 31, and a second nut 321, a second bolt sleeve 322 and a second nut plate 323 adapted to the second bolt 32, to ensure the installation stability of the first bolt 31 and the second bolt 32, which is beneficial to the sealing stability of the battery and the whole vehicle.

[0067] Furthermore, there is a gap between the aforementioned threshold beam 21 and the side of the aforementioned first battery pack frame 11 near the aforementioned second bolt 32.

[0068] For example, a safety gap exists between the sill beam 21 and the first battery pack frame 11 in the vehicle's height direction. Specifically, the safety gap can be 5 mm to 6 mm. Setting a safety gap provides space for deformation and energy absorption during a collision, ensuring the battery pack's integrity and preventing damage. Simultaneously, the safety gap also provides the necessary assembly tolerance for battery pack installation, ensuring smooth and accurate installation onto the vehicle body and preventing installation failure or excessive installation stress due to tolerance accumulation.

[0069] This invention, by leaving a safe gap between the door sill and the battery pack, can ensure the safety of the battery pack during use and prevent collision damage while integrating the battery pack with the door sill.

[0070] Furthermore, the width of the first battery pack frame 11 in the width direction of the vehicle is 59 mm ± 2 mm.

[0071] For example, the cavity width of the first battery pack frame 11 can be 59 mm ± 2 mm. In an exemplary embodiment, the cavity width of the first battery pack frame 11 is 59 mm to ensure the rationality of the battery pack structure and to adapt to the sill beam 21, so that the force can be distributed according to the lateral impact force. Figure 7 The force path shown is used to transfer energy, improving the energy absorption effect and enhancing safety performance while ensuring structural rigidity and strength.

[0072] Furthermore, the battery pack assembly 1 also includes a battery top cover 13, which is connected to the top of the first battery pack frame 11 by a rivet bolt 33, and the battery top cover 13 is disposed on the side of the first battery pack frame 11 away from the second bolt 32.

[0073] Furthermore, the distance between the aforementioned rivet bolt 33 and the aforementioned first side beam 213 is 10 mm-11 mm.

[0074] For example, such as Figure 10 As shown, the battery pack assembly 1 may further include a battery top cover 13, which is connected to the top of the first battery pack frame 11 via rivet bolts 33, and is located on the side away from the door. The distance from the rivet bolts 33 to the first side beam 213 of the door sill beam 21 can be 10 mm-11 mm. In an exemplary embodiment, the distance from the rivet bolts 33 to the first side beam 213 of the door sill beam 21 is 10 mm, meaning the width of the battery pack sealing surface is 10 mm. The battery top cover 13 provides a certain degree of upper rigidity and compressive strength, resisting slight pressure from above and protecting the battery. Furthermore, the battery top cover 13 is sealed with sealant or a sealing ring, providing dust and water protection and preventing moisture and dust from entering and causing short circuits.

[0075] Furthermore, the battery pack assembly 1 also includes a lower battery guard plate 14, which is fixedly disposed at the bottom of the first battery pack frame 11, and the lower battery guard plate 14 and the upper battery cover plate 13 are disposed on the side of the first battery pack frame 11 away from the second bolt 32.

[0076] The overlap width between the battery lower guard plate 14 and the first battery pack frame 11 is 15 mm ± 1 mm.

[0077] For example, such as Figure 10As shown, the battery pack assembly 1 may further include a lower battery guard plate 14. The lower battery guard plate 14 is disposed at the bottom of the first battery pack frame 11 and on the side away from the vehicle door, that is, the lower battery guard plate 14 corresponds to the upper battery cover plate 13, with one above the other in a one-to-one positional relationship. The overlap width between the lower battery guard plate 14 and the first battery pack frame 11 is 15 mm ± 1 mm. In an exemplary embodiment, the overlap width between the lower battery guard plate 14 and the first battery pack frame 11 is 15 mm. The lower battery guard plate 14 and the upper battery cover plate 13 together form a sealed space for accommodating the battery. The lower battery guard plate 14 provides bottom protection for the battery pack, resisting the impact of stones and road debris kicked up during driving, preventing the chassis from being scratched by protrusions when driving on rough roads or over bumps, resisting the impact of sharp foreign objects on the road (such as broken steel bars or stones), playing a role in preventing puncture, and avoiding damage to the battery cells that could lead to short circuits and fires.

[0078] In this invention, the battery pack assembly 1 also includes a weld 16. Through the weld 16, the various components in the battery pack assembly 1 can be connected to form a robust three-dimensional frame, ensuring the battery pack is sealed while providing high strength and high reliability, effectively protecting the safety of the battery in the vehicle. The battery crossbeam 15 is disposed between the battery upper cover plate 13 and the battery lower guard plate 14, which can improve the bending and torsional stiffness of the entire battery pack, not only protecting the battery but also improving the overall vehicle rigidity.

[0079] In this utility model, Figure 3 and Figure 11 This is a schematic diagram of the sill assembly 2 and the battery pack assembly 1. For the battery pack mounting points, there can be four sets simultaneously to ensure stable and reliable installation of the battery pack. Each set corresponds to a first mounting point 22 and a second mounting point 23, and each set is fixedly connected using two bolts, one long and one short. For example, as shown... Figure 12 As shown, the straight lines represent the positions corresponding to each set of mounting points. The first set of mounting points can be aligned with the first battery crossbeam, the second set of mounting points can be aligned with the first seat crossbeam, the third set of mounting points can be aligned with the second battery crossbeam, and the fourth set of mounting points can be aligned with the second seat crossbeam. The first mounting point 22 and the second mounting point 23 corresponding to each set of mounting points are coplanar.

[0080] This invention integrates the battery pack frame with the vehicle sill, replacing part of the original sill structure with the battery pack frame. Double-row bolts are used to connect the battery pack frame and the sill beam 21 along the vehicle's height, achieving stable battery installation, improving structural rigidity, and effectively increasing Y-axis space utilization. Furthermore, the integration of the battery pack frame and the vehicle sill enhances the sealing stability between the battery and the vehicle. By creating a material yield strength gradient between the sill and the battery pack frame, and aligning the force paths of the sill and the battery pack frame, a good energy absorption effect is achieved, improving safety performance.

[0081] In one exemplary embodiment, the present invention also provides a vehicle including the mounting structure of the battery pack assembly 1 as described above. The sill assembly 2 is connected to the battery pack assembly 1 via Z-direction double-row bolts, which improves the utilization rate of Y-direction space while ensuring structural rigidity and sealing stability. This effectively solves the problem of large Y-direction space occupation in traditional battery pack mounting schemes, reducing the space by about 1 / 3, and also solves the problem of insufficient material utilization in traditional schemes, thus reducing manufacturing costs.

[0082] The beneficial effects of this utility model are:

[0083] This utility model provides an installation structure and vehicle for a battery pack assembly. The battery pack assembly is connected to the vehicle's door sill assembly. The battery pack assembly includes a battery pack frame, and the door sill assembly includes a door sill beam. The battery pack frame is connected to the door sill beam via a bolt assembly. The door sill beam includes a first side beam and a second side beam arranged along the width direction of the vehicle, and the distance from the first side beam to the door is greater than the distance from the second side beam to the door. The battery pack frame includes a first battery pack frame and a second battery pack frame. The first battery pack frame is located at the bottom of the first side beam, and the second battery pack frame is located at the bottom of the second side beam, and the bottom of the second battery pack frame is fixedly connected to the bottom of the first battery pack frame. The bolt assembly includes a first bolt and a second bolt arranged along the height direction of the vehicle. The first battery pack frame is connected to the first side beam via the first bolt, and the second battery pack frame is connected to the second side beam via the second bolt. The length of the first bolt is greater than the length of the second bolt. This invention integrates the battery pack frame with the vehicle sill, replacing part of the original sill structure with the battery pack frame. Double-row bolts connect the battery pack frame and the sill beam along the vehicle's height, achieving stable battery installation, improving structural rigidity, and effectively increasing Y-axis space utilization. Furthermore, the integration of the battery pack frame and the sill improves the sealing stability between the battery and the vehicle. By creating a material yield strength gradient between the sill and the battery pack frame, and aligning the force paths of the sill and the battery pack frame, a good energy absorption effect is achieved, enhancing safety performance.

[0084] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

[0085] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A mounting structure of a battery pack assembly, characterized by, The battery pack assembly (1) is connected with a rocker assembly (2) of a vehicle, the battery pack assembly (1) comprises a battery pack framework, and the rocker assembly (2) comprises a rocker beam (21), the battery pack framework is connected with the rocker beam (21) through a bolt assembly (3); The rocker beam (21) comprises a first side beam (211) and a second side beam (212) arranged along the width direction of the vehicle, and the distance from the first side beam (211) to a door is greater than the distance from the second side beam (212) to the door; the battery pack framework comprises a first battery pack framework (11) and a second battery pack framework (12), the first battery pack framework (11) is arranged at the bottom of the first side beam (211), the second battery pack framework (12) is arranged at the bottom of the second side beam (212), and the second battery pack framework (12) is fixedly connected with the bottom of the first battery pack framework (11); The bolt assembly (3) comprises a first bolt (31) and a second bolt (32) arranged along the height direction of the vehicle, the first battery pack framework (11) is connected with the first side beam (211) through the first bolt (31), and the second battery pack framework (12) is connected with the second side beam (212) through the second bolt (32); the length of the first bolt (31) is greater than the length of the second bolt (32).

2. The mounting structure according to claim 1, characterized by The rocker beam (21) further comprises a first side beam (213) and a second side beam (214) arranged along the height direction of the vehicle, the distance between the first side beam (213) and the second side beam (214) is the total width of the rocker beam (21) in the width direction of the vehicle; the second side beam (214) is arranged on the side of the rocker beam (21) away from the first battery pack framework (11); The distance between the first bolt (31) and the first side beam (213) is 37 mm±2 mm; the distance between the second bolt (32) and the second side beam (214) is 33 mm±2 mm.

3. The mounting structure according to claim 2, characterized by The ratio between the distance between the first bolt (31) and the first side beam (213) and the distance between the first bolt (31) and the second side beam (214) is 0.1-1; The ratio between the distance between the first side beam (211) and the top of the rocker beam (21) and the distance between the first side beam (211) and the bottom of the second battery pack framework (12) is 0.1-1.

4. The mounting structure according to claim 2, wherein The ratio between the distance between the second bolt (32) and the second side beam (214) and the distance between the second bolt (32) and the first side beam (213) is 0.1-1; The ratio between the distance between the second side beam (212) and the bottom of the second battery pack framework (12) and the distance between the second side beam (212) and the top of the rocker beam (21) is 0.1-1.

5. The mounting structure according to claim 1, wherein There is a gap between the rocker beam (21) and the side of the first battery pack framework (11) close to the second bolt (32).

6. The mounting structure according to claim 1, characterized by The first battery pack frame (11) has a width of 59 mm ± 2 mm in the width direction of the vehicle.

7. The mounting structure according to claim 2, wherein The battery pack assembly (1) further comprises a battery upper cover plate (13) connected to the top of the first battery pack frame (11) by a pull-rivet bolt (33), and the battery upper cover plate (13) is arranged on the side of the first battery pack frame (11) away from the second bolt (32).

8. The mounting structure according to claim 7, characterized by The distance from the pull-rivet bolt (33) to the first side beam (213) is 10 mm-11 mm.

9. The mounting structure according to claim 7, wherein The battery pack assembly (1) further comprises a battery lower guard plate (14) fixedly arranged on the bottom of the first battery pack frame (11), and the battery lower guard plate (14) is arranged on the side of the first battery pack frame (11) away from the second bolt (32) together with the battery upper cover plate (13). The overlapping width between the battery lower guard plate (14) and the first battery pack frame (11) is 15 mm ± 1 mm.

10. A vehicle characterized by comprising: The vehicle comprises the mounting structure of the battery pack assembly according to any one of claims 1-9.

Images