Battery pack and vehicle

Abstract

The application provides a battery pack and a vehicle, the battery pack comprises a shell integrated with a vehicle body, the shell has a rocker beam arranged on two sides, a front frame, a rear frame, a front reinforcing cross beam and a rear reinforcing cross beam connected between the rocker beams on the two sides, a front cross beam, a seat mounting cross beam and a reinforcing beam are arranged on the top of the shell, a buffer space is formed between the front reinforcing cross beam and the front frame and / or between the rear reinforcing cross beam and the rear frame, the front cross beam is arranged at the front end of the shell, the seat mounting cross beam is arranged at the middle of the shell, and the reinforcing beam is arranged along the length direction of the vehicle body and connected between the front cross beam and the seat mounting cross beam. The battery pack can improve the structural strength of the shell, has good force transmission and dispersion effect, and can improve the collision safety of the battery pack.

Description

Technical Field

[0001] This invention relates to the field of vehicle body technology, and particularly to a battery pack integrated into the vehicle body. The invention also relates to a vehicle equipped with the aforementioned battery pack. Background Technology

[0002] With the continuous development of automotive technology, electric vehicles have gained increasing popularity among consumers due to their superior acceleration performance and rich electronic features. Besides acceleration and electronic features, range is another major concern for electric vehicles. To improve range, reducing overall vehicle weight has become a crucial option, leading to the integration of the battery pack with the vehicle body, a key focus for automakers' R&D personnel.

[0003] Integrating the battery pack into the vehicle body not only reduces the number of battery pack casing components, significantly lowering vehicle weight, but also improves overall vehicle rigidity by directly incorporating some components within the battery pack into the vehicle body structure. However, existing battery pack structures integrated into the vehicle body still suffer from insufficient impact force transmission and dispersion, failing to fully release impact forces and thus affecting the battery pack's collision safety.

[0004] Furthermore, existing integrated vehicle bodies with batteries suffer from insufficient structural strength and inadequate force transmission design. This results in the inability to effectively transmit and disperse collision forces during a frontal collision, leading to lower overall collision protection performance and inadequate protection for the battery pack, thus reducing its collision safety. Moreover, existing integrated vehicle bodies still present challenges in terms of seat assembly and disassembly, as well as insufficient structural strength, resulting in higher costs for seat assembly, replacement, and maintenance. Summary of the Invention

[0005] In view of this, the present invention aims to provide a battery pack that can improve the collision safety of the battery pack.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows: A battery pack includes a housing integrated with a vehicle body, the housing having sill beams on the left and right sides, and a front frame and a rear frame connecting the two sill beams. The housing is provided with a front reinforcing crossbeam arranged near the front frame and a rear reinforcing crossbeam arranged near the rear frame, and the top of the housing is provided with a front crossbeam, a reinforcing beam and a seat mounting crossbeam. The front reinforcing crossbeam and the rear reinforcing crossbeam define a battery module installation space, and a buffer space is formed between the front reinforcing crossbeam and the front frame, and / or between the rear reinforcing crossbeam and the rear frame. The front crossbeam is arranged at the front end of the housing, the seat mounting crossbeam is arranged in the middle of the housing, the reinforcing beam is arranged along the length of the vehicle body, and the front end of the reinforcing beam is connected to the front crossbeam, and the rear end of the reinforcing beam is connected to the seat mounting crossbeam.

[0007] Furthermore, the buffer space is filled with a flexible material.

[0008] Furthermore, the front frame and / or the rear frame have a middle frame and side frames connected to both ends of the middle frame. The side frames at both ends are connected to the sill beam, and the side frames at both ends are arranged at an angle, causing the middle frame to arch outward from the housing.

[0009] Furthermore, the housing also has a central channel located between the two sill beams, the front end of the central channel being connected to the front frame and the rear end of the central channel being connected to the rear frame.

[0010] Furthermore, a reinforcing longitudinal beam is connected to the bottom of the central channel, the front end of the reinforcing longitudinal beam is connected to the front reinforcing crossbeam, and the rear end of the reinforcing longitudinal beam is connected to the rear reinforcing crossbeam.

[0011] Furthermore, the cross-section of the front crossbeam is a right-angled triangle, and the rear side of the front crossbeam is an inclined plane with a gradually decreasing height from front to back. The end of the front end of the reinforcing beam is parallel to the inclined plane and is connected to the inclined plane.

[0012] Furthermore, the reinforcing beam is located in the middle of the width direction of the shell, the cross-section of the reinforcing beam is "n" shaped, and a reinforcing rib is provided at least at the top of the reinforcing beam.

[0013] Furthermore, the top of the housing is provided with an upwardly protruding central channel reinforcing rib, which extends from the front end of the housing to the rear end of the housing. The front end of the central channel reinforcing rib extends to the front crossbeam, and the reinforcing beam covers a portion of the central channel reinforcing rib.

[0014] Furthermore, the front end of the central channel reinforcing rib is provided with an upwardly protruding limiting rib, which extends along the width direction of the shell and abuts against the rear side of the front crossbeam.

[0015] Furthermore, the top of the housing is provided with a guide rail, which is arranged along the width direction of the housing; the seat mounting beam includes a middle beam and a seat mounting bracket, and the middle beam is slidably mounted to the guide rail from one end of the guide rail, the seat mounting bracket is connected to the middle beam, and a seat connecting part is provided on the seat mounting bracket.

[0016] Furthermore, at least one of the sill beam, the front frame, the rear frame, the front reinforcing beam, the rear reinforcing beam, the front beam, and the seat mounting beam is made of extruded aluminum profile; and / or, the reinforcing beam is made of thermoformed material.

[0017] Compared with the prior art, the present invention has the following advantages: The battery pack of the present invention, by setting a front reinforcing beam and a rear reinforcing beam, and forming a buffer space between the front reinforcing beam and the front frame, or between the rear reinforcing beam and the rear frame, allows the front or rear frame to deform sufficiently in the event of a frontal or rearal collision, thereby releasing the impact force transmitted to the front or rear frame and thus improving the collision safety of the battery pack.

[0018] Furthermore, the present invention improves the structural strength of the housing by coordinating the front crossbeam, seat mounting crossbeam, and reinforcing beam. In the event of a frontal collision, it forms a force transmission channel through which the collision force is transmitted sequentially along the front crossbeam, seat mounting crossbeam, and reinforcing beam, giving the housing a better force transmission and dispersion effect. This prevents deformation of the front crossbeam structure and provides better protection for the battery pack.

[0019] Meanwhile, the front crossbeam has a triangular cross-section, with the rear side of the front crossbeam and the front end of the reinforcing beam set as parallel inclined planes. This triangular characteristic enhances structural stability, resists deformation, and prevents the rear of the front nacelle from lifting up during a collision, effectively protecting the hull and crew compartment. Extending a portion of the front crossbeam beyond the hull also facilitates its full crumple deformation during a collision, absorbing impact energy.

[0020] Furthermore, the reinforcing beam has an "n"-shaped cross-section, which can form a box-like structure with the shell to enhance structural strength. The addition of reinforcing ribs can further enhance structural strength. The central channel reinforcing ribs can improve the structural strength of the shell and help transmit and disperse impact forces from the front crossbeam to the shell. The limiting ribs facilitate the installation of the front crossbeam and further facilitate the transmission and dispersion of impact forces from the front crossbeam to the shell, making the force transmission at the front of the shell smoother.

[0021] Furthermore, by setting guide rails and sliding the intermediate beam into them, this invention enables convenient assembly and disassembly of the seat mounting beam on the shell, facilitating easy disassembly and maintenance of the seat. Additionally, by adjusting the height of the seat mounting bracket and the position of the seat connection, it can meet the installation requirements of different seat models. The use of extruded aluminum profiles for the sill beam, front frame, rear frame, front reinforcing beam, rear reinforcing beam, front beam, and seat mounting beam allows for easier manufacturing of each beam structure and improves the overall structural strength of the shell and its crumple zone energy absorption performance during collisions.

[0022] Another object of the present invention is to provide a vehicle in which a battery pack as described above is provided in the vehicle body.

[0023] By incorporating the aforementioned battery pack, the vehicle of the present invention can fully release the impact force during a vehicle collision, thereby improving the collision safety of the battery pack and demonstrating excellent practicality. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the battery pack structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the shell according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the buffer space described in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the central channel reinforcing rib and limiting rib described in an embodiment of the present invention; Figure 5 This is a schematic diagram of the front crossbeam structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the front crossbeam from another perspective according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the reinforcing beam described in an embodiment of the present invention; Figure 8 This is a schematic diagram of the reinforcing beam from another perspective according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the guide rail and intermediate beam according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the seat mounting bracket according to an embodiment of the present invention; Figure 11 This is a structural schematic diagram of the seat mounting bracket described in an embodiment of the present invention from another perspective; Explanation of reference numerals in the attached figures: 1. Shell; 101. Sill beam; 102. Front frame; 103. Center channel; 104. Rear frame; 105. Front reinforcing crossbeam; 106. Rear reinforcing crossbeam; 107. Reinforcing longitudinal beam; 108. Front buffer space; 109. Rear buffer space; 1010. Vehicle floor; 1011. Center channel reinforcing rib; 1012. Limiting rib; 1013. Guide rail; 1013a. Guide rail groove; 2. Front crossbeam; 201. Sloping surface; 202. Mounting part; 203. Mounting hole; 204. Through hole; 3. Reinforcing beam; 301. First connection; 302. Second connection; 303. Reinforcing rib; 4. Seat mounting crossbeam; 401. Intermediate beam; 401a. Sliding part; 402. Seat mounting bracket; 4021. Side frame; 4022. Connecting frame; 4023. End frame; 5. Rear crossbeam; a. Middle frame; b. Side frame. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0026] In the description of this invention, it should be noted that the use of terms such as "upper," "lower," "inner," and "outer," indicating orientation or positional relationship, is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the use of terms such as "first" and "second" is also for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] This embodiment relates to a battery pack that can improve the structural strength of the battery pack housing 1 and give the battery pack better force transmission and dispersion effects, thereby improving the collision safety of the battery pack.

[0030] In terms of overall structure, combined Figures 1 to 3 As shown, the battery pack of this embodiment includes a housing 1 integrated with the vehicle body. The housing 1 has sill beams 101 on the left and right sides respectively, and a front frame 102 and a rear frame 104 connected between the two sill beams 101. The housing also has a front reinforcing beam 105 arranged near the front frame 102 and a rear reinforcing beam 106 arranged near the rear frame 104. A front beam 2, a reinforcing beam 3 and a seat mounting beam 4 are provided on the top of the housing 1.

[0031] The front reinforcing crossbeam 105 and the rear reinforcing crossbeam 106 define the battery module installation space, and buffer spaces are formed between the front reinforcing crossbeam 105 and the front frame 102, and between the rear reinforcing crossbeam 106 and the rear frame 104. The front crossbeam 2 is located at the front end of the housing 1, and the seat mounting crossbeam 4 is located in the middle of the housing 1. Meanwhile, the reinforcing beam 3 is arranged along the length of the vehicle body, and the front end of the reinforcing beam 3 is connected to the front crossbeam 2, and the rear end of the reinforcing beam 3 is connected to the seat mounting crossbeam 4.

[0032] Specifically, it is still by Figure 2 and Figure 3 As shown, the front reinforcing beam 105 and the rear reinforcing beam 106 are also connected between the two side door sill beams 101. The battery module mounting space defined between the front reinforcing beam 105 and the rear reinforcing beam 106 is used to install the battery module. Furthermore, in a preferred embodiment, buffer spaces are formed between the front reinforcing beam 105 and the front frame 102, and between the rear reinforcing beam 106 and the rear frame 104, namely the front buffer space 108 and the rear buffer space 109. In practice, no battery module is placed in either of these buffer spaces, thereby forming a buffer area at the end of the housing 1. Thus, in the event of a collision, the buffer spaces can effectively release the impact force received by the front and rear frames, thereby improving collision safety.

[0033] Of course, depending on the specific design requirements of the shell, it is also possible to form a front buffer space 108 only between the front reinforcing crossbeam 105 and the front frame 102, or a rear buffer space 109 only between the rear reinforcing crossbeam 106 and the rear frame 104. Furthermore, preferably, this embodiment may also fill the aforementioned buffer space with a flexible material, such as sponge, foam, or other suitable materials. By filling with a flexible material, it can both absorb energy and protect the module during a collision, preventing the shell structure from breaking and puncturing the module, thus avoiding a fire.

[0034] As a preferred implementation, such as Figure 3 As illustrated, in this embodiment, both the front frame 102 and the rear frame 104 structurally have a middle frame a and side frames b connected to both ends of the middle frame a. The side frames b at both ends are connected to the sill beams 101, and the side frames b at both ends are also arranged at an angle relative to the middle frame a, causing the middle frame a to arch outwards from the housing 1. With this design, this embodiment also makes the buffer space formed at the end of the housing 1 approximately trapezoidal in shape, which can facilitate the deflection of the impact force of a frontal or rear collision to the sill beams 101 on both sides, thereby reducing the impact on the modules inside the battery pack. Of course, it is also possible for only one of the front frame 102 and the rear frame 104 to adopt the above structure, in addition to both the front frame 102 and the rear frame 104 adopting the above structure.

[0035] Furthermore, the housing 1 of this embodiment also has a central channel 103 located between the two side door sill beams 101. The front end of the central channel 103 is connected to the front frame 102, and its rear end is connected to the rear frame 104. Moreover, as a preferred embodiment, in addition to the aforementioned front reinforcing beam 105 and rear reinforcing beam 106, a reinforcing longitudinal beam 107 is also connected to the bottom of the central channel 103.

[0036] The front end of the reinforcing longitudinal beam 107 is connected to the front reinforcing crossbeam 105, and the rear end of the reinforcing longitudinal beam 107 is connected to the rear reinforcing crossbeam 106. The top of the reinforcing longitudinal beam 107 can be welded to the central channel 103; however, in practice, the central channel 103 and the reinforcing longitudinal beam 107 can also be integrally formed to improve manufacturing efficiency. Furthermore, the aforementioned reinforcing longitudinal beam 107, in conjunction with the front reinforcing crossbeam 105 and the rear reinforcing crossbeam 106, further increases the structural strength of the shell 1.

[0037] In this embodiment, the front crossbeam 2, the reinforcing beam 3, and the seat mounting crossbeam 4 are specifically installed on the vehicle floor 1010 on the top of the housing 1. The vehicle floor 1010 not only serves as the floor structure of the passenger compartment, but also as the upper cover of the battery pack to enclose and protect the battery module.

[0038] In addition, such as Figure 5 and Figure 6 As shown, the cross-section of the front crossbeam 2 is triangular, which utilizes the properties of a triangle to improve structural stability. It is worth noting that the shape of the cross-section of the front crossbeam 2 here includes, but is not limited to, a triangle in the strict sense. That is, in addition to being set as straight line segments, the three sides of the cross-section of the front crossbeam 2 can also have a certain shape trend, so that the cross-section of the front crossbeam 2 is similar to a triangle as a whole, and achieves a better configuration and connection with the shell 1, the reinforcing beam 3 and other parts of the vehicle body.

[0039] In specific implementation, the cross-section of the aforementioned front crossbeam 2 is a right-angled triangle, and the rear side of the front crossbeam 2 is an inclined plane 201 with a gradually decreasing height from front to rear. The end of the front end of the reinforcing beam 3 is parallel to the inclined plane 201 and connected to the inclined plane 201. Thus, the triangular characteristics can be used to improve structural stability, resist deformation, and prevent the rear of the front cabin from lifting up during a collision, thereby effectively protecting the shell 1 and the crew compartment.

[0040] To enable the front crossbeam 2 to be installed on the housing 1, the bottom of the front crossbeam 2 has a mounting part 202 that abuts against the housing 1, a plurality of mounting holes 203 for screwing into the housing 1 are provided on the connecting part, and through holes 204 corresponding to each mounting hole 203 are provided on the inclined surface 201.

[0041] In this embodiment, see still Figure 1As shown, a portion of the front crossbeam 2 extends forward from the housing 1 and is located outside the housing 1, facilitating full crumpling deformation of the front crossbeam 2 during a collision to absorb impact energy. Simultaneously, as a preferred embodiment, the reinforcing beam 3 is located in the middle of the width direction of the housing 1, enabling better transmission and dispersal of the impact force during a frontal collision. Furthermore, in terms of specific structure, combined with... Figure 7 and Figure 8 As shown, the cross-section of the reinforcing beam 3 is "n" shaped, which can form a box-shaped structure with the shell 1 to improve the structural strength. Reinforcing ribs 303 are also provided on it to further improve the structural strength. In specific implementation, reinforcing ribs 303 can be provided at least at the top of the reinforcing beam 3, so that the reinforcing beam 3 has good structural strength.

[0042] In this embodiment, a protruding central channel reinforcing rib 1011 is also provided on the top of the housing 1, i.e., on the vehicle floor 1010. The central channel reinforcing rib 1011 is straight and extends from the front end of the housing 1 to the rear end of the housing 1. At the same time, the front end of the central channel reinforcing rib 1011 extends to the front crossbeam 2, and the reinforcing beam 3 covers a portion of the central channel reinforcing rib 1011. By providing the central channel reinforcing rib 1011 here, the structural strength of the housing 1 can be improved, which helps to transmit and disperse the collision force from the front crossbeam 2 to the housing 1.

[0043] It is worth mentioning that, in order to facilitate the installation of the reinforcing beam 3, the position where the reinforcing beam 3 is connected to the inclined surface 201 and the shell 1 is folded to form a first connecting part 301, and a second connecting part 302 is formed at the position where it is connected to the seat mounting beam 4. The second connecting part 302 includes a connecting flange formed by folding outward along the width direction of the shell 1, and an overlapping edge formed by extending along the length direction of the shell 1.

[0044] Furthermore, the central channel reinforcing ribs 1011 are also multiple ribs arranged side by side along the width direction of the shell 1. Each central channel reinforcing rib 1011 is straight. In specific implementation, the central channel reinforcing ribs 1011 in this embodiment can be set to four ribs arranged at intervals. In addition to four ribs, they can also be set and adjusted according to the actual structural reinforcement requirements of the shell 1, such as three or five ribs arranged at intervals along the width direction of the shell 1.

[0045] To facilitate the installation of the front crossbeam 2, in this embodiment, an upwardly protruding limiting rib 102 is provided at the front end of the central channel reinforcing rib 1011. At the same time, the limiting rib 102 also extends along the width direction of the housing 1 and abuts against the rear side of the front crossbeam 2, so as to facilitate the transmission and dispersion of the impact force from the front crossbeam 2 to the housing 1, thereby making the force transmission of the housing 1 smoother.

[0046] It should be noted that the seat mounting beam 4 is used for the installation of the front seats, and it can adopt an existing conventional structure and can be fixed to the top of the housing 1 by screwing or other conventional installation methods. However, as a preferred embodiment, a guide rail 1013 is provided on the top of the housing 1, that is, on the vehicle floor 1010, and the seat mounting beam 4 in this embodiment is installed on the guide rail 1013.

[0047] Among them, see Figures 9 to 11 As shown, the guide rail 1013 is arranged along the width direction of the housing 1. The seat mounting beam 4 specifically includes a middle beam 401 and a seat mounting bracket 402. The middle beam 401 is slidably installed in the guide rail 1013 from one end of the guide rail 1013. The seat mounting bracket 402 is connected to the middle beam 401 and has a seat connecting part on the seat mounting bracket 402.

[0048] Specifically, in a preferred embodiment, the guide rail 1013 of this embodiment is provided with a guide rail groove 1013a, and the intermediate beam 401 is provided with a sliding part 401a that matches the cross-section of the guide rail groove 1013a. The sliding part 401a is installed into the guide rail groove 1013a from one end. Also in a preferred embodiment, the cross-section of the guide rail groove 1013a is dovetail-shaped, and the groove opening of the guide rail groove 1013a is located at the top of the guide rail 1013, while the sliding part 401a is located at the bottom of the intermediate beam 401. This provides better guidance and support between the guide rail groove 1013a and the sliding part 401a, which helps to improve the installation accuracy between the intermediate beam 401 and the guide rail 1013.

[0049] As a preferred implementation, it remains as Figure 9 As shown, the length of the sliding part 401a is the same as the length of the intermediate beam 401, which makes the sliding part 401a longer. After being installed in the guide rail groove 1013a, the sliding part 401a can be locked in the guide rail groove 1013a by controlling the tolerance between the sliding part 401a and the guide rail groove 1013a. Thus, the seat mounting beam 4 is fixed in the width direction of the housing 1.

[0050] Of course, in this embodiment, in addition to setting the sliding part 401a and the intermediate beam 401 to be of the same length to achieve the snap-fit ​​fixation between the sliding part 401a and the guide rail groove 1013a, limiting structures, such as bolts, can also be set at both ends of the guide rail 1013 to limit and fix the seat mounting beam 4 in the width direction of the housing 1 after it enters the guide rail 1013.

[0051] To achieve a better sliding effect for the sliding part 401a, in this embodiment, the guide rail 1013 and the intermediate beam 401 are arranged in two sets. Meanwhile, the seat mounting frame 402 includes a side frame 4021 connected to each intermediate beam 401, and a connecting frame 4022 connected between the two side frames 4021, and each side frame 4021 is provided with a seat connecting part.

[0052] The side frame 4021 and the intermediate beam 401 are generally connected by bolts to facilitate the easy disassembly and maintenance of the seat mounting bracket 402. Furthermore, the seat connection portion generally consists of multiple connection holes on the side frame 4021 for connecting to the seat. The number and arrangement of these connection holes can be set and adjusted according to the actual installation requirements of the seat; for example, four or six holes can be spaced apart along the width of the housing 1.

[0053] In specific implementation, combined with Figure 10 and Figure 11 As shown, the seat mounting bracket 402 has end brackets 4023 at both ends. The end brackets 4023 are connected to the side brackets 4021 and the connecting brackets 4022. The end brackets 4023 have upward-protruding flanges, which can limit the installed seat in the width direction of the housing 1, realize the positioning and installation of the seat, and help improve the installation stability of the seat.

[0054] In this embodiment, as a preferred implementation, the guide rail 1013 is integrally formed on the top of the housing 1, that is, integrally formed on the vehicle floor 1010. This facilitates control over the positional accuracy of the guide rail 1013 and avoids installation errors. The intermediate beam 401 and the seat mounting bracket 402 can be made of extruded aluminum profiles, which helps reduce mold development costs and weight, achieving a lightweight design. In addition, a rear crossbeam 5 can also be provided near the rear end on the top of the housing 1. This rear crossbeam 5 is generally used for the installation of rear seats, and it can also adopt a similar arrangement as the seat mounting crossbeam 4.

[0055] In this specific implementation, preferably, the sill beam 101, front frame 102, rear frame 104, front reinforcing beam 105, and rear reinforcing beam 106 of this embodiment can also be made of extruded aluminum profiles. Using extruded aluminum profiles allows for easier manufacturing of each beam structure by leveraging their characteristics, while also improving the overall structural strength of the shell and its crumple zone energy absorption performance during collisions. Furthermore, the reinforcing beam 3 of this embodiment can be made of thermoformed material to achieve better structural strength.

[0056] The battery pack in this embodiment has a front reinforcing beam 105 and a rear reinforcing beam 106, and a buffer space is formed between the front reinforcing beam 105 and the front frame 102, and between the rear reinforcing beam 106 and the rear frame 104. In the event of a frontal or rear collision, the buffer space allows the front frame 102 or the rear frame 104 to deform sufficiently to release the impact force transmitted to the front frame 102 or the rear frame 104, thereby improving the collision safety of the battery pack.

[0057] Furthermore, this embodiment improves the structural strength of the housing 1 by coordinating the front crossbeam 2, the seat mounting crossbeam 4, and the reinforcing beam 3. In the event of a frontal collision, it forms a force transmission channel through which the collision force is transmitted sequentially along the front crossbeam 2, the seat mounting crossbeam 4, and the reinforcing beam 3. This results in the housing 1 having a better force transmission and dispersion effect, which can prevent deformation of the front crossbeam structure and provide better protection for the battery pack, thus demonstrating excellent practicality.

[0058] Finally, this embodiment also relates to a vehicle in which a battery pack as described above is installed in the vehicle body. By incorporating the aforementioned battery pack, the vehicle of this embodiment can fully release the impact force during a vehicle collision, thereby improving the collision safety of the battery pack and demonstrating excellent practicality.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery pack, comprising a housing (1) integrated with a vehicle body, characterized in that: The housing (1) has sill beams (101) on the left and right sides respectively, and a front frame (102) and a rear frame (104) connecting the sill beams (101) on both sides. The housing is provided with a front reinforcing beam (105) arranged near the front frame (102) and a rear reinforcing beam (106) arranged near the rear frame (104). A front beam (2), a reinforcing beam (3) and a seat mounting beam (4) are provided on the top of the housing (1). The front reinforcing crossbeam (105) and the rear reinforcing crossbeam (106) define a battery module installation space, and a buffer space is formed between the front reinforcing crossbeam (105) and the front frame (102), and / or between the rear reinforcing crossbeam (106) and the rear frame (104). The front crossbeam (2) is arranged at the front end of the housing (1), the seat mounting crossbeam (4) is arranged in the middle of the housing (1), the reinforcing beam (3) is arranged along the length of the vehicle body, and the front end of the reinforcing beam (3) is connected to the front crossbeam (2), and the rear end of the reinforcing beam (3) is connected to the seat mounting crossbeam (4).

2. The battery pack according to claim 1, characterized in that: The buffer space is filled with flexible material.

3. The battery pack according to claim 1, characterized in that: The front frame (102) and / or the rear frame (104) have a middle frame (a) and side frames (b) connected to both ends of the middle frame (a), the side frames (b) at both ends being connected to the sill beam (101), and the side frames (b) at both ends being arranged at an angle, such that the middle frame (a) arches outward toward the housing (1).

4. The battery pack according to claim 1, characterized in that: The housing (1) also has a central channel (103) located between the two side threshold beams (101), the front end of the central channel (103) being connected to the front frame (102), and the rear end of the central channel (103) being connected to the rear frame (104).

5. The battery pack according to claim 4, characterized in that: The bottom of the central channel (103) is connected to a reinforcing longitudinal beam (107), the front end of the reinforcing longitudinal beam (107) is connected to the front reinforcing crossbeam (105), and the rear end of the reinforcing longitudinal beam (107) is connected to the rear reinforcing crossbeam (106).

6. The battery pack according to claim 1, characterized in that: The front crossbeam (2) has a right-angled triangle cross section, and the rear side of the front crossbeam (2) is an inclined plane (201) with a gradually decreasing height from front to back. The end of the front end of the reinforcing beam (3) is parallel to the inclined plane (201) and is connected to the inclined plane (201).

7. The battery pack according to claim 1, characterized in that: The reinforcing beam (3) is located in the middle of the width direction of the shell (1). The cross-section of the reinforcing beam (3) is "n" shaped, and a reinforcing rib (303) is provided at least at the top of the reinforcing beam (3).

8. The battery pack according to claim 1, characterized in that: The top of the housing (1) is provided with an upwardly protruding central channel reinforcing rib (1011). The central channel reinforcing rib (1011) extends from the front end of the housing (1) to the rear end of the housing (1). The front end of the central channel reinforcing rib (1011) extends to the front crossbeam (2), and the reinforcing beam (3) covers a portion of the central channel reinforcing rib (1011).

9. The battery pack according to claim 8, characterized in that: The front end of the central channel reinforcing rib (1011) is provided with an upwardly protruding limiting rib (1012), which extends along the width direction of the shell (1) and abuts against the rear side of the front crossbeam (2).

10. The battery pack according to claim 1, characterized in that: The top of the housing (1) is provided with a guide rail (1013), which is arranged along the width direction of the housing (1); The seat mounting beam (4) includes a middle beam (401) and a seat mounting bracket (402). The middle beam (401) is slidably mounted to the guide rail (1013) from one end. The seat mounting bracket (402) is connected to the middle beam (401) and has a seat connecting part on the seat mounting bracket (402).

11. The battery pack according to any one of claims 1 to 10, characterized in that: At least one of the sill beam (101), the front frame (102), the rear frame (104), the front reinforcing beam (105), the rear reinforcing beam (106), the front beam (2), and the seat mounting beam (4) is made of extruded aluminum profile; and / or, the reinforcing beam (3) is made of thermoformed material.

12. A vehicle, characterized in that... The vehicle body is provided with a battery pack as described in any one of claims 1 to 11.

Images