Side beam, tray, battery pack, and vehicle

Abstract

A vehicle, wherein the vehicle comprises a battery pack, the battery pack comprises a tray, and the tray comprises a side beam. The side beam comprises a side beam body, a first reinforcing plate, a second reinforcing plate, and a third reinforcing plate. The side beam body defines a cavity; the cavity comprises a first side wall, a second side wall, and a third side wall; and the third side wall is disposed between the first side wall and the second side wall. Two ends of the first reinforcing plate are separately connected to the first side wall. Two ends of the second reinforcing plate are respectively connected to two ends of the second side wall. One end of the third reinforcing plate is connected to the first reinforcing plate, and the other end of the third reinforcing plate is connected to the second reinforcing plate.

Description

Side beams, pallets, battery packs, and vehicles

[0001] Cross-references to related applications

[0002] This disclosure claims priority to Chinese patent application filed on July 30, 2024, with application number 202421825080.X, entitled “Side beam, tray, battery pack and vehicle”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of battery pack technology, and in particular to a side beam, tray, battery pack, and vehicle. Background Technology

[0004] In the existing technology, the cavity of the battery pack side beam has only two support points, which is a small number and the overall rigidity of the side beam is insufficient. The number of sub-cavities inside the side beam is small and the side beam structure is simple, which cannot effectively resist impacts from all directions and has poor deformation resistance, resulting in poor protection of the battery pack by the side beam.

[0005] Public content

[0006] This disclosure aims to at least address one of the technical problems existing in the prior art. Therefore, the first objective of this disclosure is to provide a side beam that can enhance the overall structural strength and load-bearing capacity of the side beam.

[0007] A second objective of this disclosure is to provide a pallet including the side beams described in the above embodiments.

[0008] A third objective of this disclosure is to provide a battery pack comprising the tray and at least one cell assembly as described in the above embodiments.

[0009] A fourth object of this disclosure is to provide a vehicle that includes the battery pack described in the above embodiments.

[0010] A side beam according to a first aspect embodiment of the present disclosure includes: a side beam body defining a cavity, the cavity including a first side wall, a second side wall, and a third side wall, the first side wall and the second side wall being opposite to each other, and the third side wall being disposed between the first side wall and the second side wall; a first reinforcing plate, both ends of the first reinforcing plate being connected to the first side wall; a second reinforcing plate, both ends of the second reinforcing plate being connected to both ends of the second side wall; and a third reinforcing plate, one end of the third reinforcing plate being connected to the first reinforcing plate, and the other end of the third reinforcing plate being connected to the second reinforcing plate.

[0011] According to the embodiments of the present disclosure, the arrangement of the first sub-plate and the second sub-plate in the side beam enables the first reinforcing plate to effectively support the first side wall, thereby improving the structural strength of the first side wall of the side beam. The layout of the first sub-plate and the second sub-plate ensures the transmission of force, so that the external force on the side beam can be quickly and evenly distributed to the entire side beam structure, effectively improving the lateral load capacity of the side beam on the first side wall and improving the overall structural impact resistance of the first side wall.

[0012] In some embodiments, the first reinforcing plate includes: a first sub-plate, one end of which is connected to the first sidewall; and a second sub-plate, one end of which is connected to the first sidewall, and the other ends of the second sub-plate and the other ends of the first sub-plate are connected to the one end of the third reinforcing plate.

[0013] In some embodiments, the other end of the first sub-plate and the other end of the second sub-plate extend obliquely toward each other along the width direction of the side beam.

[0014] In some embodiments, the angle between the first sub-plate and the second sub-plate is θ1, wherein θ1 satisfies: 50°≤θ1≤60°.

[0015] In some embodiments, the first sub-plate and the second sub-plate are symmetrically arranged along the height direction of the side beam.

[0016] In some embodiments, the second reinforcing plate includes: a third sub-plate; and a fourth sub-plate, one end of the third sub-plate and one end of the fourth sub-plate being connected to both ends of the second sidewall, the other ends of the third sub-plate and the other ends of the fourth sub-plate being connected to the other end of the third reinforcing plate, and the other ends of the third sub-plate and the other ends of the fourth sub-plate extending obliquely toward each other along the width direction of the side beam.

[0017] In some embodiments, the included angle between the third sub-plate and the fourth sub-plate is θ2, wherein θ2 satisfies: 110°≤θ2≤120°.

[0018] In some embodiments, the third reinforcing plate is arranged parallel to the third sidewall.

[0019] In some embodiments, the system further includes: a fourth sidewall, which is connected to one end of the first sidewall and the second sidewall along the height direction of the edge beam, and a third sidewall is connected to the other end of the first sidewall and the second sidewall along the height direction of the edge beam, wherein the fourth sidewall is arranged parallel to the third sidewall; and a fourth reinforcing plate, which is perpendicularly connected to the third reinforcing plate, wherein both ends of the fourth reinforcing plate are respectively connected to the third sidewall and the fourth sidewall.

[0020] In some embodiments, the third reinforcing plate and the fourth reinforcing plate divide the cavity between the first reinforcing plate and the second reinforcing plate into a first chamber, a second chamber, a third chamber, and a fourth chamber. The first chamber and the second chamber are located on one side of the third reinforcing plate along the height direction of the side beam, and the third chamber and the fourth chamber are located on the other side of the third reinforcing plate along the height direction of the side beam.

[0021] In some embodiments, the first chamber and the third chamber are symmetrically distributed along the height direction of the side beam; the second chamber and the fourth chamber are symmetrically distributed along the height direction of the side beam.

[0022] In some embodiments, the system further includes: a first anti-collision structure disposed on the side of the first sidewall away from the second sidewall, the first anti-collision structure being connected to one end of the first sidewall along the height direction of the side beam; and a second anti-collision structure disposed on the side of the first sidewall away from the second sidewall, the second anti-collision structure being connected to the other end of the first sidewall along the height direction of the side beam, the first anti-collision structure and the second anti-collision structure being spaced apart along the height direction of the side beam.

[0023] In some embodiments, the first and second anti-collision structures are provided with at least one chamber.

[0024] In some embodiments, the first anti-collision structure includes: a fifth sidewall, the fifth sidewall being disposed on one side of the first anti-collision structure adjacent to the first reinforcing plate along the height direction of the side beam, the connection point between the fifth sidewall and the first sidewall and the connection point between the first sub-plate and the first sidewall being located on both sides of the first sidewall along the width direction of the side beam, and being opposite to each other along the width direction of the side beam.

[0025] In some embodiments, the second anti-collision structure includes: a sixth sidewall, the sixth sidewall being disposed on one side of the second anti-collision structure adjacent to the first reinforcing plate along the height direction of the side beam, the connection point between the sixth sidewall and the first sidewall and the connection point between the second sub-plate and the first sidewall being located on both sides of the first sidewall along the width direction of the side beam, and being opposite to each other along the width direction of the side beam.

[0026] In some embodiments, the width of the side beam is L, where L satisfies: 240mm≤L≤260mm.

[0027] The pallet according to a second aspect of the present disclosure includes a side beam according to the first aspect of the present disclosure described above.

[0028] A battery pack according to a third aspect of the present disclosure includes: a tray, the tray being the tray according to the second aspect of the present disclosure described above; and at least one battery cell assembly disposed within the tray, the battery cell assembly being less than or equal to the height of the side beam along the height direction of the side beam of the tray.

[0029] In some embodiments, at least one positioning groove is formed on the side of the tray facing the battery pack, and a mica adhesive is provided in the positioning groove.

[0030] The vehicle according to a fourth aspect of the present disclosure includes a battery pack according to the third aspect of the present disclosure described above.

[0031] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 is a schematic diagram of a side beam according to an embodiment of the present disclosure.

[0034] Figure 2 is a schematic cross-sectional view of the side beam according to an embodiment of the present disclosure.

[0035] Figure 3 is a side view of the side beam according to an embodiment of the present disclosure.

[0036] Figure 4 is a schematic diagram of a battery pack according to an embodiment of the present disclosure.

[0037] Figure 5 is a schematic block diagram of a vehicle according to an embodiment of the present disclosure.

[0038] Reference numerals: 1000, Vehicle; 100, Side beam; 10, Side beam body; 11, Cavity; 12, First side wall; 13, Second side wall; 14, Third side wall; 15, Fourth side wall; 16, First chamber; 17, Second chamber; 18, Third chamber; 19, Fourth chamber; 20, First reinforcing plate; 21, First sub-plate; 22, Second sub-plate; 23, Second reinforcing plate; 24, Third sub-plate; 25, Fourth sub-plate; 26, Third reinforcing plate; 27, Fourth reinforcing plate; 30, First anti-collision structure; 31, Fifth side wall; 32, Second anti-collision structure; 33, Sixth side wall; 34, Positioning groove; 35, Chamber; 200, Battery pack; 40, Tray; 41, Cell assembly; A, Width direction; B, Height direction. Detailed Implementation

[0039] The embodiments of this disclosure are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The side beam 100 according to an embodiment of this disclosure is described below with reference to Figures 1-4, including a side beam body 10, a first reinforcing plate 20, a second reinforcing plate 23, and a third reinforcing plate 26.

[0040] Specifically, as shown in Figures 1-3, the side beam body 10 defines a cavity 11, which includes a first sidewall 12, a second sidewall 13, and a third sidewall 14. The first sidewall 12 and the second sidewall 13 are opposite to each other, and the third sidewall 14 is located between the first sidewall 12 and the second sidewall 13. Both ends of the first reinforcing plate 20 are connected to the first sidewall 12; both ends of the second reinforcing plate 23 are connected to both ends of the second sidewall 13. One end of the third reinforcing plate 26 is connected to the first reinforcing plate 20, and the other end of the third reinforcing plate 26 is connected to the second reinforcing plate 23.

[0041] Referring to Figures 1-3, the first sidewall 12 and the second sidewall 13 extend along the height direction B of the side beam 100, and are spaced apart along the width direction A of the side beam 100. The third sidewall 14 extends along the width direction A of the side beam 100, and its two ends along the width direction A are respectively connected to the ends of the first sidewall 12 and the second sidewall 13 located on the same side along the height direction B. The two ends of the first reinforcing plate 20 are respectively connected to the middle of the first sidewall 12. One end of the second reinforcing plate 23 along the height direction B of the side beam 100 is connected to the end of the second sidewall 13 along the height direction B away from the third sidewall 14, and the other end of the second reinforcing plate 23 along the height direction B is connected to the other end of the second sidewall 13 along the height direction B adjacent to the third sidewall 14. The first reinforcing plate 20 and the second reinforcing plate 23 are spaced apart along the width direction A of the side beam 100, and the third reinforcing plate 26 extends along the width direction A of the side beam 100. The two ends of the third reinforcing plate 26 are respectively connected to the first reinforcing plate 20 and the second reinforcing plate 23.

[0042] According to an embodiment of this disclosure, the side beam 100 is used in a battery pack 200. The side beam body 10 forms the basic frame of the side beam 100, and the cavity 11 can effectively disperse stress and prevent structural deformation. The side beam body 10 has internal structures such as a first reinforcing plate 20, a second reinforcing plate 23, and a third reinforcing plate 26, which help to disperse external forces. The first sidewall 12 and the second sidewall 13, through their connection with the first reinforcing plate 20 and the second reinforcing plate 23, enhance the bending and torsional resistance of the first sidewall 12 and the second sidewall 13 in the parallel direction. When the battery pack 200 is subjected to impact, the side beam 100 can improve the protection of the battery pack 200, enhance the torsional stiffness of the side beam 100 under stress, and improve the overall structural stability, thereby improving the overall safety and stability of the battery pack 200.

[0043] According to some embodiments of the present disclosure, as shown in FIG2, the first reinforcing plate 20 includes a first sub-plate 21 and a second sub-plate 22. One end of the first sub-plate 21 is connected to the first sidewall 12; one end of the second sub-plate 22 is connected to the first sidewall 12; and the other end of the second sub-plate 22 and the other end of the first sub-plate 21 are connected to one end of the third reinforcing plate 26.

[0044] One end of the first sub-plate 21 and one end of the second sub-plate 22 are spaced apart along the height direction B of the side beam 100. The other end of the first sub-plate 21 and the other end of the second sub-plate 22 are connected to each other, and the other end of the first sub-plate 21 and the other end of the second sub-plate 22 are both connected to the end of the third reinforcing plate 26 adjacent to the first side wall 12 along the width direction A of the side beam 100.

[0045] Thus, the first sub-plate 21 and the second sub-plate 22 form a support connection with the third reinforcing plate 26, and both the first sub-plate 21 and the second sub-plate 22 are connected to the first side wall 12, which can effectively enhance the local strength of the first side wall 12 of the side beam 100, optimize the stability of the overall structure of the side beam 100, and improve the torsional and bending resistance of the side beam 100.

[0046] According to some embodiments of this disclosure, as shown in FIG2, the other end of the first sub-plate 21 and the other end of the second sub-plate 22 extend obliquely toward each other along the width direction A of the side beam 100.

[0047] One end of the first sub-plate 21 is connected to the first sidewall 12. The other end of the first sub-plate 21 extends obliquely along the width direction A of the side beam 100 toward the side where the second sidewall 13 is located, and along the height direction B of the side beam 100 toward the side where the third sidewall 14 is located. One end of the second sub-plate 22 is connected to the first sidewall 12. The other end of the second sub-plate 22 extends obliquely along the width direction A of the side beam 100 toward the side where the second sidewall 13 is located, and along the height direction B of the side beam 100 toward a direction away from the third sidewall 14. The other end of the first sub-plate 21 is connected to the other end of the second sub-plate 22. The first sub-plate 21, the second sub-plate 22, and the first sidewall 12 form a stable triangular structure, which greatly improves the stability and reliability of the first sidewall 12.

[0048] Therefore, the arrangement of the first sub-plate 21 and the second sub-plate 22 enables the first reinforcing plate 20 to effectively support the first side wall 12, thereby improving the structural strength of the first side wall 12 of the side beam 100. The layout of the first sub-plate 21 and the second sub-plate 22 ensures the transmission of force, so that the external force on the side beam 100 can be quickly and evenly distributed to the entire structure of the side beam 100, effectively improving the lateral load capacity of the side beam 100 on the first side wall 12 and improving the overall structural impact resistance of the first side wall 12.

[0049] According to some embodiments of this disclosure, as shown in FIG2, the included angle between the first sub-plate 21 and the second sub-plate 22 is θ1, and θ1 satisfies: 50°≤θ1≤60°.

[0050] Stress concentration is prone to occur at the connection between the first sub-plate 21 and the second sub-plate 22. If the included angle between the first sub-plate 21 and the second sub-plate 22 is less than 50°, this small angle is likely to cause stress concentration, which may cause the local stress in the structure to exceed the material's bearing capacity, resulting in deformation or cracking. Therefore, limiting the range of the included angle between the first sub-plate 21 and the second sub-plate 22 can reduce stress concentration during the cyclic loading process when the battery pack 200 is subjected to cyclic loading, thereby reducing the risk of fatigue fracture of the side beam 100. The first sub-plate 21 and the second sub-plate 22 can absorb the impact force from the outside of the side beam 100 to the inside of the side beam 100, especially the lateral force of the first side wall 12, and evenly transmit the stress to the entire side beam 100, thereby enhancing the structural mechanical stability of the side beam 100.

[0051] According to some embodiments of this disclosure, as shown in FIG2, the first sub-plate 21 and the second sub-plate 22 are symmetrically arranged along the height direction B of the side beam 100.

[0052] The symmetrical arrangement of the first sub-plate 21 and the second sub-plate 22 ensures a more balanced force transmission and stress state in the height direction B of the edge beam 100 structure. Regardless of the direction of external force acting on the edge beam 100, the symmetrical first sub-plate 21 and the second sub-plate 22 can respond in a similar manner, helping to reduce offset or torsion and maintain the stability and straightness of the edge beam 100 structure. When the edge beam 100 is subjected to compressive, tensile, or bending loads, the symmetrical first sub-plate 21 and the second sub-plate 22 work together as a whole to resist deformation, which can improve the rigidity of the edge beam 100.

[0053] According to some embodiments of this disclosure, as shown in FIG2, the second reinforcing plate 23 includes a third sub-plate 24 and a fourth sub-plate 25. One end of the third sub-plate 24 and one end of the fourth sub-plate 25 are respectively connected to the two ends of the second sidewall 13. The other end of the third sub-plate 24 and the other end of the fourth sub-plate 25 are connected to the other end of the third reinforcing plate 26. The other ends of the third sub-plate 24 and the other ends of the fourth sub-plate 25 extend obliquely toward each other along the width direction A of the side beam 100.

[0054] One end of the third sub-plate 24 is connected to the end of the second sidewall 13 along the height direction B away from the third sidewall 14. The other end of the third sub-plate 24 extends obliquely along the width direction A of the side beam 100 toward the side where the first sidewall 12 is located, and also extends obliquely along the height direction B of the side beam 100 toward the side where the third sidewall 14 is located. One end of the fourth sub-plate 25 is connected to the other end of the second sidewall 13 along the height direction B of the third sidewall 14. The other end of the fourth sub-plate 25 extends obliquely along the width direction A of the side beam 100 toward the side where the first sidewall 12 is located, and also extends obliquely along the height direction B of the side beam 100 away from the third sidewall 14. The other end of the third sub-plate 24 is connected to the other end of the fourth sub-plate 25, that is, the third sub-plate 24 and the fourth sub-plate 25 form a V-shaped structure.

[0055] Therefore, the arrangement of the third sub-plate 24 and the fourth sub-plate 25 enables the second reinforcing plate 23 to effectively support the second side wall 13, thereby improving the structural strength of the second side wall 13 of the side beam 100. The layout of the third sub-plate 24 and the fourth sub-plate 25 ensures the symmetrical transmission of force, so that the external force on the side beam 100 can be quickly and evenly distributed throughout the entire side beam 100 structure, effectively improving the lateral load capacity of the side beam 100 on the second side wall 13 and enhancing the overall structural impact resistance of the second side wall 13.

[0056] According to some embodiments of this disclosure, as shown in FIG2, the included angle between the third sub-plate 24 and the fourth sub-plate 25 is θ2, and θ2 satisfies: 110°≤θ2≤120°.

[0057] Stress concentration is prone to occur at the connection between the third sub-plate 24 and the fourth sub-plate 25. If the included angle between the third sub-plate 24 and the fourth sub-plate 25 is less than 110°, this small angle is likely to cause stress concentration, which may cause the local stress in the structure to exceed the material's bearing capacity, leading to deformation or cracking. If the included angle between the third sub-plate 24 and the fourth sub-plate 25 satisfies 110°≤θ2≤120°, the angle design can reduce stress concentration and evenly distribute the stress to the second reinforcing plate 23, improving the strength and durability of the second reinforcing plate 23. Therefore, by limiting the range of the included angle between the third sub-plate 24 and the fourth sub-plate 25, when the battery pack 200 is subjected to cyclic loads, the obtuse angle design can reduce stress concentration during the cyclic load process, reduce the risk of fatigue fracture of the side beam 100, and also extend the service life of the side beam 100.

[0058] According to some embodiments of this disclosure, as shown in FIG2, the third reinforcing plate 26 is arranged parallel to the third sidewall 14.

[0059] The third reinforcing plate 26 is parallel to the third sidewall 14. The third reinforcing plate 26 can more effectively distribute the received force (whether it comes directly from the third sidewall 14 or is transmitted through other reinforcing plates) evenly throughout the structure, which helps to reduce local stress concentration and improve the durability and reliability of the structure.

[0060] Therefore, the parallel arrangement of the third reinforcing plate 26 and the third sidewall 14 helps to improve the space utilization of the cavity 11 inside the edge beam 100, simplifying the manufacturing and assembly process. The third reinforcing plate 26, parallel to the third sidewall 14, can form an integral reinforced frame with the first reinforcing plate 20, the second reinforcing plate 23, and each sub-plate, increasing the overall rigidity of the structure and effectively improving the stability and load-bearing capacity of the edge beam 100. The parallel arrangement of the third reinforcing plate 26 can also serve as part of the force transmission path, more efficiently transferring the force acting on the edge beam 100 from one end to the other, thus helping to improve the load-bearing capacity of the edge beam 100.

[0061] According to some embodiments of this disclosure, as shown in FIG2, the side beam 100 further includes a fourth side wall 15 and a fourth reinforcing plate 27. The fourth side wall 15 is connected to one end of the first side wall 12 and the second side wall 13 along the height direction B of the side beam 100, and the third side wall 14 is connected to the other end of the first side wall 12 and the second side wall 13 along the height direction B of the side beam 100. The fourth side wall 15 is arranged parallel to the third side wall 14. The fourth reinforcing plate 27 is perpendicularly connected to the third reinforcing plate 26, and both ends of the fourth reinforcing plate 27 are connected to the third side wall 14 and the fourth side wall 15, respectively.

[0062] The fourth sidewall 15 extends along the width direction A of the side beam 100, and is spaced apart from the third sidewall 14 along the height direction B of the side beam 100. Both ends of the fourth sidewall 15 along the width direction A are connected to the ends of the first sidewall 12 and the second sidewall 13 along the height direction B, away from the third sidewall 14, respectively. The fourth reinforcing plate 27 extends along the height direction B of the side beam 100, and both ends of the fourth reinforcing plate 27 along the height direction B are connected to the middle portions of the third sidewall 14 and the fourth sidewall 15, respectively. The middle portion of the fourth reinforcing plate 27 is connected to the middle portion of the third reinforcing plate 26, forming a cross-shaped structure.

[0063] Thus, the fourth sidewall 15, together with the first sidewall 12, the second sidewall 13, and the third sidewall 14, forms a closed cavity 11 structure. The fourth reinforcing plate 27 is perpendicularly connected to the third reinforcing plate 26, and its two ends are fixed to the third sidewall 14 and the fourth sidewall 15, respectively. This configuration further consolidates the three-dimensional frame structure of the entire side beam 100. The fourth reinforcing plate 27 can significantly improve the compressive and bending resistance of the plane containing the third sidewall 14 and the fourth sidewall 15 in the side beam 100 structure. Especially when the side beam 100 needs to withstand gravity or impact forces from above or below, the side beam 100 forms a more complete force transmission system, and the loads in all directions can be more evenly distributed and transmitted, thereby greatly improving the overall rigidity and stability of the structure and reducing the risk of structural failure due to excessive local stress.

[0064] According to some embodiments of this disclosure, as shown in FIG2, the third reinforcing plate 26 and the fourth reinforcing plate 27 divide the cavity 11 between the first reinforcing plate 20 and the second reinforcing plate 23 into a first chamber 16, a second chamber 17, a third chamber 18 and a fourth chamber 19. The first chamber 16 and the second chamber 17 are disposed on one side of the third reinforcing plate 26 along the height direction B of the side beam 100, and the third chamber 18 and the fourth chamber 19 are disposed on the other side of the third reinforcing plate 26 along the height direction B of the side beam 100.

[0065] The first chamber 16 and the third chamber 18 are located on one side of the fourth reinforcing plate 27 along the width direction A of the side beam 100, while the second chamber 17 and the fourth chamber 19 are located on the other side of the fourth reinforcing plate 27 along the width direction A of the side beam 100. Thus, the third reinforcing plate 26 and the fourth reinforcing plate 27 divide the cavity 11 into multiple chambers, each chamber becoming an independent reinforcing unit. This allows for more effective stress distribution and transmission, reducing stress concentration in individual areas and thereby improving the overall strength and stiffness. The partitioned chambers can limit the propagation of local deformation. When the side beam 100 is under stress, the chambers can mutually restrain each other, preventing or mitigating the deformation of the overall structure and improving structural stability. Under torsional loads, the chambers effectively improve the torsional stiffness of the structure, preventing torsional failure of the side beam 100.

[0066] According to some embodiments of this disclosure, as shown in FIG2, the first chamber 16 and the third chamber 18 are symmetrically distributed along the height direction B of the side beam 100; the second chamber 17 and the fourth chamber 19 are symmetrically distributed along the height direction B of the side beam 100.

[0067] The first chamber 16, the third chamber 18, the second chamber 17, and the fourth chamber 19 are symmetrically distributed along the height direction B of the side beam 100, ensuring that the side beam 100 can transmit loads more evenly when under stress, reducing the possibility of eccentric loading and local overload due to asymmetrical design. The symmetrical layout helps maintain stability when the side beam 100 is subjected to bending. When the side beam 100 bends under lateral force, the symmetrical chambers can provide support forces in the opposite direction, offsetting part of the bending moment and improving the overall bending resistance. Therefore, the symmetrical distribution of the first chamber 16, the third chamber 18, the second chamber 17, and the fourth chamber 19 along the height direction B of the side beam 100 not only improves the overall performance and stability of the structure from a mechanical perspective, increasing the strength of the side beam 100 in all directions, effectively resisting and absorbing the impact of forces from all directions during a vehicle collision, but also simplifies the design process.

[0068] According to some embodiments of this disclosure, as shown in FIG2, the side beam 100 further includes a first anti-collision structure 30 and a second anti-collision structure 32. The first anti-collision structure 30 is disposed on the side of the first side wall 12 away from the second side wall 13, and is connected to one end of the first side wall 12 along the height direction B of the side beam 100. The second anti-collision structure 32 is disposed on the side of the first side wall 12 away from the second side wall 13, and is connected to the other end of the first side wall 12 along the height direction B of the side beam 100. The first anti-collision structure 30 and the second anti-collision structure 32 are spaced apart along the height direction B of the side beam 100.

[0069] The first anti-collision structure 30 and the second anti-collision structure 32 are connected to the outer wall of the main body of the side beam 100. Their function is to be the first to contact the impact force during a collision, absorbing energy through deformation and reducing the direct impact on the main structure of the battery pack 200. The first and second anti-collision structures 30 and 32 are spaced apart along the height direction B to ensure that even if the impact force is not completely head-on, the combined action of the first and second anti-collision structures 30 and 32 can more widely disperse the impact force, improving the protective effect. The spaced arrangement of the first and second anti-collision structures 30 and 32 along the height direction B of the side beam 100 also increases the layers of impact energy absorption, preventing a single anti-collision point from bearing the entire impact force, thus dispersing the force more evenly and reducing the risk of localized damage. The spaced arrangement can also adapt to different types of collisions; whether the impact is from the top, middle, or bottom, the nearest support point can be found for energy absorption.

[0070] Therefore, the spacing between the first anti-collision structure 30 and the second anti-collision structure 32, through reasonable layout and design, significantly enhances the protective capability of the side beam 100 in the face of various collision situations, providing a more reliable protective effect for the battery pack 200.

[0071] According to some embodiments of the present disclosure, as shown in FIG2, the first anti-collision structure 30 and the second anti-collision structure 32 are provided with at least one chamber 35.

[0072] The chamber 35 structure allows the first and second anti-collision structures 30 and 32 to deform and absorb energy when subjected to impact, thereby reducing the force transmitted to the battery pack 200 and providing cushioning protection. Compared to a solid structure, the design containing chambers 35 can reduce the total mass of the side beam 100 while maintaining the same energy absorption performance. The second anti-collision structure 32 can contain multiple chambers 35, which are arranged at intervals along the width direction A of the side beam 100.

[0073] Therefore, by providing at least one chamber 35 inside the first anti-collision structure 30 and the second anti-collision structure 32, not only can the safety of the side beam 100 be enhanced in a collision event, but a lightweight design of the side beam 100 can also be achieved. The connection between the first anti-collision structure 30, the second anti-collision structure 32 and the first sidewall 12 is the location of maximum stress on the side beam 100. The provision of the first anti-collision structure 30 and the second anti-collision structure 32 is used to enhance the structural strength of the side beam 100, thereby improving the impact resistance and reliability of the side beam 100 and enhancing the protective effect of the side beam 100 on the battery pack 200.

[0074] According to some embodiments of this disclosure, as shown in FIG2, the first anti-collision structure 30 includes a fifth sidewall 31. The fifth sidewall 31 is disposed on the side of the first anti-collision structure 30 adjacent to the first reinforcing plate 20 along the height direction B of the side beam 100. The connection point between the fifth sidewall 31 and the first sidewall 12 and the connection point between the first sub-plate 21 and the first sidewall 12 are located on both sides of the first sidewall 12 along the width direction A of the side beam 100, and are opposite to each other along the width direction A of the side beam 100.

[0075] The fifth sidewall 31 extends along the width direction A of the side beam 100. One end of the fifth sidewall 31 along the width direction A of the side beam 100 is connected to the first sidewall 12, and the other end of the fifth sidewall 31 extends along the width direction A of the side beam 100 in a direction away from the first sidewall 12.

[0076] Therefore, through its direct connection with the first sidewall 12, the fifth sidewall 31 of the first anti-collision structure 30 can effectively transfer external impact forces to the main structure of the side beam 100, utilizing the entire side beam 100 to disperse and absorb these forces, thus reducing the direct impact on the battery pack 200. The fifth sidewall 31 and the first sub-plate 21 are opposite each other in the width direction A of the side beam 100, forming a stable support frame, which helps improve the anti-collision effect of the side beam 100 and prevents local stress concentration.

[0077] According to some embodiments of this disclosure, as shown in FIG2, the second anti-collision structure 32 includes a sixth sidewall 33. The sixth sidewall 33 is disposed on the side of the second anti-collision structure 32 adjacent to the first reinforcing plate 20 along the height direction B of the side beam 100. The connection point between the sixth sidewall 33 and the first sidewall 12 and the connection point between the second sub-plate 22 and the first sidewall 12 are located on both sides of the first sidewall 12 along the width direction A of the side beam 100, and are opposite to each other along the width direction A of the side beam 100.

[0078] The sixth sidewall 33 extends along the width direction A of the side beam 100. One end of the sixth sidewall 33 along the width direction A of the side beam 100 is connected to the first sidewall 12, and the other end of the sixth sidewall 33 extends along the width direction A of the side beam 100 in a direction away from the first sidewall 12.

[0079] Therefore, the sixth sidewall 33 of the second anti-collision structure 32, through direct connection with the first sidewall 12, can effectively transfer external impact forces to the main structure of the side beam 100, utilizing the entire side beam 100 to disperse and absorb these forces, reducing the direct impact on the battery pack 200. The sixth sidewall 33 and the second sub-plate 22 are opposite each other in the width direction A of the side beam 100, forming a stable support frame, which helps improve the anti-collision effect of the side beam 100 and prevents local stress concentration.

[0080] According to some embodiments of this disclosure, as shown in FIG2, the width of the side beam 100 is L, and L satisfies: 240mm≤L≤260mm.

[0081] Limiting the width range of the edge beam 100 allows the edge beam 100 to meet specific requirements in various scenarios, ensuring the structural strength and functional needs of the edge beam 100 while maintaining the flexibility of the edge beam 100 design.

[0082] As shown in FIG4, the tray 40 according to a second aspect embodiment of the present disclosure includes the side beam 100 according to the first aspect embodiment of the present disclosure described above.

[0083] According to the embodiments of the present disclosure, the pallet 40, by applying the side beam 100 in the above embodiments, and the side beam 100 having a first reinforcing plate 20, a second reinforcing plate 23, a third reinforcing plate 26, and a fourth reinforcing plate 27 inside, greatly enhances the rigidity and stability of the pallet 40, effectively resisting external impacts from all directions. The provision of the first anti-collision structure 30 and the second anti-collision structure 32, and the design of the chamber 35 inside them, provides additional collision protection for the pallet 40, especially in the event of frontal or side impacts, absorbing and dispersing a large amount of impact force, effectively improving the reliability and stability of the pallet 40.

[0084] As shown in FIG4, the battery pack 200 according to the third aspect embodiment of the present disclosure includes a tray 40 and at least one battery cell assembly 41. The tray 40 is the tray 40 according to the second aspect embodiment of the present disclosure described above. The battery cell assembly 41 is disposed in the tray 40, and the height B of the battery cell assembly 41 along the side beam 100 of the tray 40 is less than or equal to the height of the side beam 100.

[0085] The height of the cell assembly 41 within the tray 40 is less than or equal to the height of the side beam 100 of the tray 40. This makes the tray 40 and the cell assembly 41 together form a load-bearing structure, effectively improving the overall strength and rigidity of the battery pack 200. When the battery pack 200 is subjected to a collision, because the height of the side beam 100 of the tray 40 is greater than the height of the cell assembly 41, most of the impact force can be resisted by the side beam 100 of the tray 40, thereby improving the safety and stability of the cell assembly 41, and simultaneously improving the safety and stability of the battery pack 200. In some embodiments, the corners of the side beam 100 of the tray 40 are designed as right angles instead of obtuse angles, which can increase the space utilization within the tray 40, thereby increasing the energy density of the battery pack 200.

[0086] According to the embodiments of the present disclosure, the battery pack 200, by applying the tray 40 in the above embodiments, can effectively improve the overall structural strength, collision safety and thermal management efficiency of the battery pack 200. The cell assembly 41 does not exceed the height of the side beam 100, so that when the battery pack 200 suffers an external impact, the side beam 100 can provide a complete protective barrier, preventing the cell assembly 41 from directly bearing the impact force, reducing the risk of damage to the battery pack 200 in an accident, and extending the service life and performance of the battery pack 200.

[0087] According to some embodiments of this disclosure, as shown in FIG3, at least one positioning groove 34 is formed on the side of the side beam 100 of the tray 40 facing the battery cell assembly 41, and a mica adhesive is provided in the positioning groove 34.

[0088] A mica adhesive is embedded in the positioning groove 34. Mica, as a high-performance insulating material, has excellent high-temperature resistance, chemical corrosion resistance, and low dielectric loss. Using the mica adhesive, electrical isolation can be achieved between the cell assembly 41 and the tray 40, avoiding the risk of short circuits. It also provides a certain degree of thermal stability, helping to distribute heat evenly and preventing localized overheating, significantly improving the safety and reliability of the battery pack 200. The mica adhesive may also absorb mechanical vibration to some extent, protecting the cell assembly 41 from vibration damage and extending the service life of the battery pack 200.

[0089] The vehicle 1000 according to the fourth aspect of the present disclosure includes the battery pack 200 according to the third aspect of the present disclosure described above, as shown in FIG5.

[0090] According to the embodiments of the present disclosure, by applying the battery pack 200 in the above embodiments, when the vehicle 1000 encounters a collision, the design of the inner side beam 100 of the battery pack 200 can effectively absorb and disperse the impact force, protect the battery from damage, reduce the risk of fire or explosion, ensure the safety of occupants, and improve the safety of the vehicle 1000.

[0091] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0092] In the description of this disclosure, "first feature" and "second feature" may include one or more of the features. In the description of this disclosure, "a plurality of" means two or more. In the description of this disclosure, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. In the description of this disclosure, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0094] Although embodiments of this disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A side beam (100), wherein, include: Side beam body (10), the side beam body (10) defines a cavity (11), the cavity (11) includes a first side wall (12), a second side wall (13) and a third side wall (14), the first side wall (12) and the second side wall (13) are opposite to each other, and the third side wall (14) is disposed between the first side wall (12) and the second side wall (13); The first reinforcing plate (20) has two ends connected to the first sidewall (12); The second reinforcing plate (23) has two ends connected to the two ends of the second sidewall (13); as well as The third reinforcing plate (26) has one end connected to the first reinforcing plate (20) and the other end connected to the second reinforcing plate (23).

2. The edge beam (100) according to claim 1, wherein, The first reinforcing plate (20) includes: The first sub-plate (21), one end of which is connected to the first sidewall (12); and The second sub-plate (22) has one end connected to the first sidewall (12), and the other end of the second sub-plate (22) and the other end of the first sub-plate (21) are connected to one end of the third reinforcing plate (26).

3. The edge beam (100) according to claim 2, wherein, The other end of the first sub-plate (21) and the other end of the second sub-plate (22) extend obliquely toward each other along the width direction of the side beam (100).

4. The edge beam (100) according to claim 2 or 3, wherein, The angle between the first sub-plate (21) and the second sub-plate (22) is θ1, and θ1 satisfies: 50°≤θ1≤60°.

5. The edge beam (100) according to any one of claims 2-4, wherein, The first sub-plate (21) and the second sub-plate (22) are symmetrically arranged along the height direction of the side beam (100).

6. The edge beam (100) according to any one of claims 1-5, wherein, The second reinforcing plate (23) includes: Third sub-board (24); and The fourth sub-plate (25) is connected to the two ends of the second sidewall (13) at one end of the third sub-plate (24) and the fourth sub-plate (25), respectively. The other ends of the third sub-plate (24) and the fourth sub-plate (25) are connected to the other end of the third reinforcing plate (26). The other ends of the third sub-plate (24) and the fourth sub-plate (25) extend obliquely toward each other along the width direction of the side beam (100).

7. The edge beam (100) according to claim 6, wherein, The included angle between the third sub-plate (24) and the fourth sub-plate (25) is θ2, and θ2 satisfies: 110°≤θ2≤120°.

8. The edge beam (100) according to any one of claims 1-7, wherein, The third reinforcing plate (26) is arranged parallel to the third sidewall (14).

9. The edge beam (100) according to any one of claims 1-8, wherein, Also includes: A fourth sidewall (15) is connected to one end of the first sidewall (12) and the second sidewall (13) along the height direction of the side beam (100), and a third sidewall (14) is connected to the other end of the first sidewall (12) and the second sidewall (13) along the height direction of the side beam (100). The fourth sidewall (15) is arranged parallel to the third sidewall (14). The fourth reinforcing plate (27) is perpendicularly connected to the third reinforcing plate (26), and the two ends of the fourth reinforcing plate (27) are respectively connected to the third sidewall (14) and the fourth sidewall (15).

10. The edge beam (100) according to claim 9, wherein, The third reinforcing plate (26) and the fourth reinforcing plate (27) divide the cavity (11) between the first reinforcing plate (20) and the second reinforcing plate (23) into a first chamber (16), a second chamber (17), a third chamber (18), and a fourth chamber (19). The first chamber (16) and the second chamber (17) are located on one side of the third reinforcing plate (26) along the height direction of the side beam (100), and the third chamber (18) and the fourth chamber (19) are located on the other side of the third reinforcing plate (26) along the height direction of the side beam (100).

11. The edge beam (100) according to claim 10, wherein, The first chamber (16) and the third chamber (18) are symmetrically distributed along the height direction of the side beam (100); The second chamber (17) and the fourth chamber (19) are symmetrically distributed along the height direction of the side beam (100).

12. The edge beam (100) according to any one of claims 2-5, wherein, Also includes: A first anti-collision structure (30) is provided on the side of the first sidewall (12) away from the second sidewall (13), and the first anti-collision structure (30) is connected to one end of the first sidewall (12) along the height direction of the side beam (100); and The second anti-collision structure (32) is located on the side of the first sidewall (12) away from the second sidewall (13). The second anti-collision structure (32) is connected to the other end of the first sidewall (12) along the height direction of the side beam (100). The first anti-collision structure (30) and the second anti-collision structure (32) are spaced apart along the height direction of the side beam (100).

13. The edge beam (100) according to claim 12, wherein, The first anti-collision structure (30) and the second anti-collision structure (32) are provided with at least one chamber (35).

14. The edge beam (100) according to claim 12 or 13, wherein, The first anti-collision structure (30) includes a fifth sidewall (31), which is located on the side of the first anti-collision structure (30) adjacent to the first reinforcing plate (20) along the height direction of the side beam (100). The connection point between the fifth sidewall (31) and the first sidewall (12) and the connection point between the first sub-plate (21) and the first sidewall (12) are located on both sides of the first sidewall (12) along the width direction of the side beam (100) and are opposite to each other along the width direction of the side beam (100).

15. The edge beam (100) according to any one of claims 12-14, wherein, The second anti-collision structure (32) includes a sixth sidewall (33), which is located on one side of the second anti-collision structure (32) adjacent to the first reinforcing plate (20) along the height direction of the side beam (100). The connection point between the sixth sidewall (33) and the first sidewall (12) and the connection point between the second sub-plate (22) and the first sidewall (12) are located on both sides of the first sidewall (12) along the width direction of the side beam (100) and are opposite to each other along the width direction of the side beam (100).

16. The edge beam (100) according to any one of claims 1-15, wherein, The width of the side beam (100) is L, and L satisfies: 240mm≤L≤260mm.

17. A tray (40), wherein, Includes the edge beam (100) according to any one of claims 1-16.

18. A battery pack (200), wherein, include: The tray (40) is the tray (40) as described in claim 17; and At least one battery cell assembly (41) is disposed within the tray (40), wherein the battery cell assembly (41) is less than or equal to the height of the side beam (100) of the tray (40) along the height direction of the side beam (100).

19. The battery pack (200) according to claim 18, wherein, The side beam (100) of the tray (40) facing the battery cell assembly (41) has at least one positioning groove (34), and the positioning groove (34) is provided with a mica adhesive.

20. A vehicle (1000), wherein, Includes the battery pack (200) according to claim 18 or 19.

Images