Edge beam, tray, battery pack and vehicle

Abstract

The utility model discloses a boundary beam, tray, battery pack and vehicle, boundary beam includes: boundary beam body, first reinforcing plate, second reinforcing plate and third reinforcing plate, boundary beam body defines cavity, cavity includes first side wall, second side wall and third side wall, third side wall is provided between first side wall and second side wall; two ends of the first reinforcing plate are respectively connected with the first side wall; two ends of the second reinforcing plate are respectively connected with two ends of the second side wall; one end of the third reinforcing plate is connected with the first reinforcing plate, and the other end of the third reinforcing plate is connected with the second reinforcing plate. Therefore, due to the arrangement of the first sub-plate and the second sub-plate, the first reinforcing plate can effectively support the first side wall, the structural strength of the first side wall of the edge beam is improved, force transmission is ensured through the arrangement of the first sub-plate and the second sub-plate, and the external acting force borne by the edge beam can be rapidly and evenly dispersed into the whole edge beam structure; the lateral load capacity of the edge beam is effectively improved, and the overall structure crashworthiness of the first side wall is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and particularly relates to a side beam, a tray, a battery pack and a vehicle. Background Art

[0002] In the prior art, there are only two support points in the cavity of the side beam of the battery pack, and the number is small, so the overall rigidity of the side beam is insufficient; the number of internal sub-cavities of the side beam is small, and the structure of the side beam is simple, which cannot effectively resist impacts from all directions, and the anti-deformation ability is poor, resulting in a poor protection effect of the side beam on the battery pack. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first object of the utility model is to propose a side beam, which can enhance the overall structural strength and bearing capacity of the side beam.

[0004] The second object of the utility model is to propose a tray, including the side beam described in the above embodiment.

[0005] The third object of the utility model is to propose a battery pack, including the tray described in the above embodiment and at least one battery cell group.

[0006] The fourth object of the utility model is to propose a vehicle, including the battery pack described in the above embodiment.

[0007] The side beam according to the first aspect embodiment of the utility model includes: a side beam body, a first reinforcing plate, a second reinforcing plate and a third reinforcing plate. The side beam body defines a cavity, and the cavity includes a first side wall, a second side wall and a third side wall. The first side wall and the second side wall are opposite to each other, and the third side wall is arranged between the first side wall and the second side wall. The two ends of the first reinforcing plate are respectively connected to the first side wall. The two ends of the second reinforcing plate are respectively connected to the 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.

[0008] According to the side beam of the embodiment of the utility model, the arrangement of the first sub-plate and the second sub-plate enables the first reinforcing plate to effectively support the first side wall, 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, enabling the external force received by the side beam to be quickly and evenly dispersed to the entire side beam structure, effectively improving the lateral load capacity of the first side wall of the side beam and enhancing the overall structural crashworthiness of the first side wall.

[0009] In some embodiments, the first reinforcing plate includes: a first sub-plate and a second sub-plate. One end of the first sub-plate is connected to the first side wall; one end of the second sub-plate is connected to the first side wall, and the other end of the second sub-plate and the other end of the first sub-plate are connected to the one end of the third reinforcing plate.

[0010] In some embodiments, the other end of the first sub-plate and the other end of the second sub-plate extend obliquely towards each other along the width direction of the side beam.

[0011] In some embodiments, the included angle between the first sub-plate and the second sub-plate is θ 1 , the θ 1 satisfies: 50° ≤ θ 1 ≤ 60°.

[0012] In some embodiments, the first sub-plate and the second sub-plate are symmetrically arranged along the height direction of the side beam.

[0013] 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 are respectively connected to the two ends of the second side wall, and the other end of the third sub-plate and the other end of the fourth sub-plate are connected to the other end of the third reinforcing plate. The other end of the third sub-plate and the other end of the fourth sub-plate extend obliquely towards each other along the width direction of the side beam.

[0014] In some embodiments, the included angle between the third sub-plate and the fourth sub-plate is θ 2 , the θ 2 satisfies: 110° ≤ θ 2 ≤ 120°.

[0015] In some embodiments, the third reinforcing plate is arranged parallel to the third side wall.

[0016] In some embodiments, it further includes: a fourth side wall and a fourth reinforcing plate. The fourth side wall is connected to one end of the first side wall and the second side wall along the height direction of the side beam, and the third side wall is connected to the other end of the first side wall and the second side wall along the height direction of the side beam. The fourth side wall is arranged parallel to the third side wall; the fourth reinforcing plate is perpendicularly connected to the third reinforcing plate, and the two ends of the fourth reinforcing plate are respectively connected to the third side wall and the fourth side wall.

[0017] 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 disposed 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 disposed on the other side of the third reinforcing plate along the height direction of the side beam.

[0018] 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.

[0019] In some embodiments, it further includes: a first anti-collision structure and a second anti-collision structure. The first anti-collision structure is disposed on the side of the first side wall away from the second side wall, and the first anti-collision structure is connected to one end of the first side wall along the height direction of the side beam; the second anti-collision structure is disposed on the side of the first side wall away from the second side wall, and the second anti-collision structure is connected to the other end of the first side wall along the height direction of the side beam. The first anti-collision structure and the second anti-collision structure are spaced apart along the height direction of the side beam.

[0020] In some embodiments, at least one chamber is provided in the first anti-collision structure and the second anti-collision structure.

[0021] In some embodiments, the first anti-collision structure includes: a fifth side wall, which is disposed on the side of the first anti-collision structure adjacent to the first reinforcing plate along the height direction of the side beam. The connection point of the fifth side wall and the first side wall and the connection point of the first sub-plate and the first side wall are located on both sides of the first side wall along the width direction of the side beam and are opposite to each other along the width direction of the side beam.

[0022] In some embodiments, the second anti-collision structure includes: a sixth side wall, which is disposed on the side of the second anti-collision structure adjacent to the first reinforcing plate along the height direction of the side beam. The connection point of the sixth side wall and the first side wall and the connection point of the second sub-plate and the first side wall are located on both sides of the first side wall along the width direction of the side beam and are opposite to each other along the width direction of the side beam.

[0023] In some embodiments, the width of the side beam is L, and the L satisfies: 240 mm ≤ L ≤ 260 mm.

[0024] The tray according to the second aspect embodiment of the present invention includes the side beam according to the first aspect embodiment of the present invention above.

[0025] The battery pack according to the third aspect embodiment of the present utility model includes: a tray and at least one battery cell group. The tray is the tray according to the second aspect embodiment of the present utility model above; the battery cell group is disposed in the tray, and the height of the battery cell group along the height direction of the side beam of the tray is less than or equal to the height of the side beam.

[0026] In some embodiments, at least one positioning groove is formed on the side of the side beam of the tray facing the battery cell group, and a mica bonding member is disposed in the positioning groove.

[0027] The vehicle according to the fourth aspect embodiment of the present utility model includes the battery pack according to the third aspect embodiment of the present utility model above.

[0028] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0029] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0030] Figure 1 is a schematic diagram of a side beam according to an embodiment of the present utility model.

[0031] Figure 2 is a cross-sectional schematic diagram of a side beam according to an embodiment of the present utility model.

[0032] Figure 3 is a side view schematic diagram of a side beam according to an embodiment of the present utility model.

[0033] Figure 4 is a schematic diagram of a battery pack according to an embodiment of the present utility model.

[0034] Reference Signs:

[0035] 100, side beam;

[0036] 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;

[0037] 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;

[0038] 30, first anti-collision structure; 31, fifth side wall; 32, second anti-collision structure; 33, sixth side wall; 34, positioning groove;

[0039] 200, battery pack;

[0040] 40, tray; 41, battery cell group;

[0041] A, width direction; B, height direction. Specific embodiments

[0042] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Below, reference is made to Figures 1-4 Describe the side beam 100 according to an embodiment of the present utility model, including: a side beam body 10, a first reinforcing plate 20, a second reinforcing plate 23, and a third reinforcing plate 26.

[0043] Specifically, as Figures 1-3 shown, 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; both ends of the first reinforcing plate 20 are respectively connected to the first side wall 12; both ends of the second reinforcing plate 23 are respectively connected to both ends of the second side wall 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.

[0044] Combined with Figures 1-3 , the first side wall 12 and the second side wall 13 extend along the height direction B of the side beam 100. The first side wall 12 and the second side wall 13 are spaced apart along the width direction A of the side beam 100. The third side wall 14 extends along the width direction A of the side beam 100. Both ends of the third side wall 14 along the width direction A are respectively connected to one end of the first side wall 12 and the second side wall 13 located on the same side along the height direction B. Both ends of the first reinforcing plate 20 are respectively connected to the middle of the first side wall 12. One end of the second reinforcing plate 23 along the height direction B of the side beam 100 is connected to one end of the second side wall 13 far from the third side wall 14 along the height direction B, and the other end of the second reinforcing plate 23 along the height direction B is connected to the other end of the second side wall 13 adjacent to the third side wall 14 along the height direction B. The first reinforcing plate 20 and the second reinforcing plate 23 are spaced apart along the width direction A of the side beam 100. The third reinforcing plate 26 extends along the width direction A of the side beam 100, and both ends of the third reinforcing plate 26 are respectively connected to the first reinforcing plate 20 and the second reinforcing plate 23.

[0045] According to the side beam 100 of the embodiment of the present utility model, the side beam 100 is applicable to the battery pack 200. The side beam body 10 forms the basic framework of the side beam 100, and the cavity 11 can effectively disperse stress and prevent structural deformation. Structures such as the first reinforcing plate 20, the second reinforcing plate 23, and the third reinforcing plate 26 are formed inside the side beam body 10, which helps to disperse external forces. The connection between the first side wall 12 and the second side wall 13 and the first reinforcing plate 20 and the second reinforcing plate 23 enhances the bending and torsional resistance of the first side wall 12 and the second side wall 13 in the parallel direction. When the battery pack 200 is impacted, the side beam 100 can improve the protection of the battery pack 200, enhance the torsional stiffness and overall structural stability of the side beam 100 when stressed, thereby improving the overall safety and stability of the battery pack 200.

[0046] According to some embodiments of the present utility model, as Figure 2 shown, 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 side wall 12; one end of the second sub-plate 22 is connected to the first side wall 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.

[0047] 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.

[0048] Thus, the first sub-plate 21 and the second sub-plate 22 form a bracket 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 anti-twisting and anti-bending capabilities of the side beam 100.

[0049] According to some embodiments of the present utility model, as Figure 2 shown, the other end of the first sub-plate 21 and the other end of the second sub-plate 22 extend obliquely towards each other along the width direction A of the side beam 100.

[0050] One end of the first sub - plate 21 is connected to the first side wall 12. The other end of the first sub - plate 21 extends obliquely towards the side where the second side wall 13 is located along the width direction A of the side beam 100 and extends obliquely towards the side where the third side wall 14 is located along the height direction B of the side beam 100. One end of the second sub - plate 22 is connected to the first side wall 12. The other end of the second sub - plate 22 extends obliquely towards the side where the second side wall 13 is located along the width direction A of the side beam 100 and extends obliquely towards the direction away from the third side wall 14 along the height direction B of the side beam 100. The other end of the first sub - plate 21 is connected to the other end of the second sub - plate 22. A triangular stable structure is formed among the first sub - plate 21, the second sub - plate 22 and the first side wall 12, greatly improving the stability and reliability of the first side wall 12.

[0051] Thus, 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, enhancing 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 force transmission, enabling the external forces received by the side beam 100 to be quickly and evenly distributed throughout the side beam 100 structure, effectively improving the lateral load - bearing capacity of the side beam 100 at the first side wall 12 and enhancing the overall structural crashworthiness of the first side wall 12.

[0052] According to some embodiments of the present utility model, as Figure 2 shown, the included angle between the first sub - plate 21 and the second sub - plate 22 is θ 1 , θ 1 satisfies: 50° ≤ θ 1 ≤ 60°.

[0053] There is prone to stress concentration at the connection between the first plate 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°, the small angle here is likely to cause stress concentration, easily resulting in the local stress of the structure exceeding the bearing capacity of the material, thus leading to deformation or cracking. Therefore, by limiting the range of the included angle between the first sub - plate 21 and the second sub - plate 22, when the battery pack 200 is subjected to cyclic loads, stress concentration during the cyclic load process can be reduced, and the risk of fatigue fracture of the side beam 100 can be lowered. 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 impact force on the first side wall 12, and conduct the stress evenly throughout the side beam 100, playing a role in enhancing the structural mechanical stability of the side beam 100.

[0054] According to some embodiments of the present utility model, as Figure 2 shown, the first sub - plate 21 and the second sub - plate 22 are symmetrically arranged along the height direction B of the side beam 100.

[0055] The symmetric arrangement of the first sub-plate 21 and the second sub-plate 22 can ensure that the force transmission and stress state of the side beam 100 structure in the height direction B are more balanced. Regardless of the direction of the external force acting on the side beam 100, the symmetric first sub-plate 21 and second sub-plate 22 can respond in a similar manner, helping to reduce offset or distortion and maintaining the stability and linearity of the side beam 100 structure. When the side beam 100 bears compressive, tensile or bending loads, the symmetric first sub-plate 21 and second sub-plate 22 work together as a whole to resist deformation jointly, which can improve the rigidity of the side beam 100.

[0056] According to some embodiments of the present invention, as Figure 2 shown, 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 both ends of the second side wall 13, and 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. Along the width direction A of the side beam 100, the other ends of the third sub-plate 24 and the fourth sub-plate 25 extend obliquely towards each other.

[0057] One end of the third sub-plate 24 is connected to the end of the second side wall 13 far from the third side wall 14 along the height direction B. The other end of the third sub-plate 24 extends obliquely towards the side where the first side wall 12 is located along the width direction A of the side beam 100 and extends obliquely towards the side where the third side wall 14 is located along the height direction B of the side beam 100. One end of the fourth sub-plate 25 is connected to the other end of the second side wall 13 connected to the third side wall 14 along the height direction B. The other end of the fourth sub-plate 25 extends obliquely towards the side where the first side wall 12 is located along the width direction A of the side beam 100 and extends obliquely towards the direction away from the third side wall 14 along the height direction B of the side beam 100. 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.

[0058] Thus, 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, enhancing 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 symmetric force transmission, enabling the external force received by the side beam 100 to be quickly and evenly dispersed throughout the side beam 100 structure, effectively enhancing the lateral load capacity of the side beam 100 at the second side wall 13 and improving the overall structural crashworthiness of the second side wall 13.

[0059] According to some embodiments of the present invention, as Figure 2 shown, the included angle between the third sub-plate 24 and the fourth sub-plate 25 is θ 2 , θ 2 satisfies: 110° ≤ θ 2 ≤ 120°.

[0060] At the connection between the third sub-board 24 and the fourth sub-board 25, stress concentration is likely to occur. If the angle between the fifth sub-board and the sixth sub-board is less than 110°, this is a small angle that easily causes stress concentration, and it is easy to cause the local stress of the structure to exceed the bearing capacity of the material, resulting in deformation or cracking. If the angle between the third sub-board 24 and the fourth sub-board 25 satisfies 110° ≤ θ 2 ≤ 120°1, the design of the angle can reduce stress concentration, evenly disperse the stress into the second reinforcing plate 23, and improve the strength and durability of the second reinforcing plate 23. Thus, by limiting the range of the angle between the third sub-board 24 and the fourth sub-board 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 moreover, the obtuse angle design can also extend the service life of the side beam 100.

[0061] According to some embodiments of the present invention, as Figure 2 shown, the third reinforcing plate 26 is arranged parallel to the third side wall 14.

[0062] The third reinforcing plate 26 is kept parallel to the third side wall 14. The third reinforcing plate 26 can more effectively distribute the received force (whether directly from the third side wall 14 or transmitted through other reinforcing plates) evenly throughout the structure, helping to reduce local stress concentration and improve the durability and reliability of the structure.

[0063] Thus, the parallel arrangement between the third reinforcing plate 26 and the third side wall 14 helps to improve the space utilization rate of the cavity 11 inside the side beam 100 and simplifies the manufacturing and assembly processes. The third reinforcing plate 26 parallel to the third side wall 14 can form an integral reinforcement framework with the first reinforcing plate 20, the second reinforcing plate 23, and each sub-board, increasing the overall rigidity of the structure and effectively improving the stability and bearing capacity of the side beam 100. The parallel third reinforcing plate 26 can be part of the force conduction path, more efficiently transmitting the force acting on the side beam 100 from one end to the other end, helping to improve the bearing capacity of the side beam 100.

[0064] According to some embodiments of the present invention, as Figure 2 shown, it 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 respectively connected to the third side wall 14 and the fourth side wall 15.

[0065] The fourth side wall 15 extends along the width direction A of the side beam 100. The fourth side wall 15 is spaced apart from the third side wall 14 along the height direction B of the side beam 100. The two ends of the fourth side wall 15 along the width direction A are respectively connected to the ends of the first side wall 12 and the second side wall 13 that are away from the third side wall 14 along the height direction B. The fourth reinforcing plate 27 extends along the height direction B of the side beam 100. The two ends of the fourth reinforcing plate 27 along the height direction B are respectively connected to the middle parts of the third side wall 14 and the fourth side wall 15. The middle part of the fourth reinforcing plate 27 is connected to the middle part of the third reinforcing plate 26. The fourth reinforcing plate 27 and the third reinforcing plate 26 form a "cross" structure.

[0066] Thus, the fourth side wall 15, the first side wall 12, the second side wall 13 and the third side wall 14 form a closed cavity 11 structure. The fourth reinforcing plate 27 is perpendicularly connected to the third reinforcing plate 26, and the two ends are respectively fixed on the third side wall 14 and the fourth side wall 15. Such a 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 where the third side wall 14 and the fourth side wall 15 of the side beam 100 structure are located. Especially when the side beam 100 needs to bear the gravity or impact force 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 dispersed and conducted, thereby greatly improving the overall rigidity and stability of the structure and reducing the risk of structural failure caused by excessive local stress.

[0067] According to some embodiments of the present invention, as Figure 2 shown, 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 arranged on one side of the third reinforcing plate 26 along the height direction B of the side beam 100. The third chamber 18 and the fourth chamber 19 are arranged on the other side of the third reinforcing plate 26 along the height direction B of the side beam 100.

[0068] The first chamber 16 and the third chamber 18 are arranged on one side of the fourth reinforcing plate 27 along the width direction A of the side beam 100. The second chamber 17 and the fourth chamber 19 are arranged 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 becomes an independent strengthening unit, which can more effectively distribute and transmit stress, reduce stress concentration in a single area, and thus improve the overall strength and stiffness. Dividing the chambers can limit the propagation of local deformation. When the side beam 100 is stressed, each chamber can restrict each other, prevent or slow down the deformation of the overall structure, and improve the stability of the structure. When subjected to torsional loads, the chambers can effectively improve the torsional stiffness of the structure and prevent the side beam 100 from undergoing torsional failure.

[0069] According to some embodiments of the present utility model, as Figure 2 shown, 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.

[0070] The symmetrical distribution of the first chamber 16 and the third chamber 18, as well as the second chamber 17 and the fourth chamber 19, along the height direction B of the side beam 100 ensures that the side beam 100 can transfer loads more evenly when stressed, reducing the phenomena of eccentric load and local overload that may be caused by asymmetric design. The symmetrical layout helps to maintain stability when the side beam 100 is bent. When the side beam 100 is bent under the action of a lateral force, the symmetrical chambers can provide supporting forces in opposite directions, offsetting part of the bending moment and improving the overall bending resistance performance. Thus, the symmetrical distribution of the first chamber 16 and the third chamber 18, as well as 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, enhances the strength of the side beam 100 in all directions, and effectively resists and absorbs the impact of forces from all directions during a vehicle collision, but also simplifies the design process.

[0071] According to some embodiments of the present utility model, as Figure 2 shown, it 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 the first anti-collision structure 30 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 the second anti-collision structure 32 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.

[0072] The first anti-collision structure 30 and the second anti-collision structure 32 are connected to the outer sidewall of the main body of the side beam 100. The functions of the first anti-collision structure 30 and the second anti-collision structure 32 are to first contact the impact force during a collision, absorb energy through their own deformation, and reduce the direct impact on the main structure of the battery pack 200. The first anti-collision structure 30 and the second anti-collision structure 32 are arranged at intervals along the height direction B. To ensure that in the case where the collision force is not completely frontal, through the combined action of the first anti-collision structure 30 and the second anti-collision structure 32, the impact force can be more widely dispersed, improving the protection effect. The first anti-collision structure 30 and the second anti-collision structure 32 are arranged at intervals along the height direction B of the side beam 100, which can also increase the levels of impact energy absorption, avoid a single anti-collision point from bearing all the impact force, thus more evenly dispersing the action of the force and reducing the risk of local damage. The interval setting can also adapt to different types of collisions. Whether it is an impact at the top, middle or bottom, the nearest support point can be found for energy absorption.

[0073] Therefore, the interval setting of the first anti-collision structure 30 and the second anti-collision structure 32, through reasonable layout and design, significantly enhances the protection ability of the side beam 100 in the face of various collision situations, providing a more reliable protection function for the battery pack 200.

[0074] According to some embodiments of the present utility model, as Figure 2 shown, at least one chamber is provided in the first anti-collision structure 30 and the second anti-collision structure 32.

[0075] The setting of the chamber structure enables the first anti-collision structure 30 and the second anti-collision structure 32 to deform to absorb energy when subjected to an impact force, thereby reducing the force transmitted to the battery pack 200 itself and playing a buffering and protecting role. Compared with a solid structure, the design with chambers can reduce the total mass of the side beam 100 on the premise of ensuring the same energy absorption performance. Multiple chambers can be provided in the second anti-collision structure 32, and the multiple chambers are arranged at intervals along the width direction A of the side beam 100.

[0076] Therefore, by providing at least one chamber inside the first and second anti-collision structures 32, not only can the safety of the side beam 100 in a collision event be enhanced, but also the lightweight design of the side beam 100 can be realized. The connection between the first anti-collision structure 30, the second anti-collision structure 32 and the first sidewall 12 is the maximum stress position of the side beam 100. The settings of the first anti-collision structure 30 and the second anti-collision structure 32 are used to enhance the structural strength of the side beam 100, so as to improve the impact resistance and reliability of the side beam 100 and enhance the protection effect of the side beam 100 on the battery pack 200.

[0077] According to some embodiments of the present utility model, as Figure 2As shown, the first anti-collision structure 30 includes: a fifth side wall 31, which is disposed on one 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 of the fifth side wall 31 and the first side wall 12 and the connection point of the first sub-plate 21 and the first side wall 12 are located on both sides of the first side wall 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 fifth side wall 31 extends along the width direction A of the side beam 100. One end of the fifth side wall 31 along the width direction A of the side beam 100 is connected to the first side wall 12, and the other end of the fifth side wall 31 extends along the width direction A of the side beam 100 in a direction away from the first side wall 12.

[0079] Thus, through the direct connection of the fifth side wall 31 of the first anti-collision structure 30 with the first side wall 12, the fifth side wall 31 can effectively transfer the external impact force into the main structure of the side beam 100, and use the entire side beam 100 to disperse and absorb these forces, reducing the direct impact on the battery pack 200. The fifth side wall 31 and the first sub-plate 21 are opposite to each other in the width direction A of the side beam 100, forming a stable support frame, which is beneficial to improving the anti-collision effect of the side beam 100 and preventing local stress concentration.

[0080] According to some embodiments of the present invention, as Figure 2 shown, the second anti-collision structure 32 includes: a sixth side wall 33, which is disposed on one 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 of the sixth side wall 33 and the first side wall 12 and the connection point of the second sub-plate 22 and the first side wall 12 are located on both sides of the first side wall 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.

[0081] The sixth side wall 33 extends along the width direction A of the side beam 100. One end of the sixth side wall 33 along the width direction A of the side beam 100 is connected to the first side wall 12, and the other end of the sixth side wall 33 extends along the width direction A of the side beam 100 in a direction away from the first side wall 12.

[0082] Thus, through the direct connection of the sixth side wall 33 of the second anti-collision structure 32 with the first side wall 12, the sixth side wall 33 can effectively transfer the external impact force into the main structure of the side beam 100, and use the entire side beam 100 to disperse and absorb these forces, reducing the direct impact on the battery pack 200. The sixth side wall 33 and the fourth sub-plate 25 are opposite to each other in the width direction A of the side beam 100, forming a stable support frame, which is beneficial to improving the anti-collision effect of the side beam 100 and preventing local stress concentration.

[0083] According to some embodiments of the present invention, as Figure 2As shown, the width of the side beam 100 is L, and L satisfies: 240mm ≤ L ≤ 260mm.

[0084] Defining the width range of the side beam 100 facilitates the scenario where the side beam 100 meets specific requirements, ensures the structural strength and functional requirements of the side beam 100, and maintains the flexibility of the design of the side beam 100.

[0085] The tray 40 according to the second aspect embodiment of the present utility model, as Figure 4 shown, includes the side beam 100 according to the above first aspect embodiment of the present utility model.

[0086] For the tray 40 according to the embodiment of the present utility model, by applying the side beam 100 in the above embodiment, the first reinforcing plate 20, the second reinforcing plate 23, the third reinforcing plate 26, and the fourth reinforcing plate 27 are arranged inside the side beam 100, greatly enhancing the rigidity and stability of the tray 40, and being able to effectively resist external force impacts from all directions. The setting of the first anti-collision structure 30 and the second anti-collision structure 32, and the chamber design inside them, provide additional collision protection for the tray 40. Especially when impacted from the front or side, they can absorb and disperse a large amount of impact force, effectively improving the reliability and stability of the tray 40.

[0087] The battery pack 200 according to the third aspect embodiment of the present utility model, as Figure 4 shown, includes: a tray 40 and at least one battery cell group 41. The tray 40 is the tray 40 according to the above second aspect embodiment of the present utility model; the battery cell group 41 is arranged inside the tray 40, and the height direction B of the battery cell group 41 along the side beam 100 of the tray 40 is less than or equal to the height of the side beam 100.

[0088] The height of the battery cell group 41 inside the tray 40 is less than or equal to the height of the side beam 100 of the tray 40, which enables the tray 40 and the battery cells as a whole to form a stress structure, effectively improving the overall strength and stiffness of the battery pack 200. When the battery pack 200 is collided, since the height of the side beam 100 of the tray 40 is greater than the height of the battery cells, 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 battery cell group 41 and at the same time 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-angle structures instead of obtuse-angle structures, which can increase the space utilization rate inside the tray 40, and thus can increase the energy density of the battery pack 200.

[0089] According to the battery pack 200 of the embodiments of the present utility model, by applying the tray 40 in the above embodiments, the overall structural strength, collision safety and thermal management efficiency of the battery pack 200 can be effectively improved. The battery cell group 41 does not exceed the height of the side beam 100, so that when the battery pack 200 is subjected to an external impact, the side beam 100 can provide a complete protection barrier, preventing the battery cells 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.

[0090] According to some embodiments of the present utility model, as Figure 1 and Figure 2 shown, at least one positioning groove 34 is formed on the side of the side beam 100 of the tray 40 facing the battery cell group 41, and a mica bonding member is provided in the positioning groove 34.

[0091] The mica bonding member is embedded in the positioning groove 34. Mica, as a high-performance insulating material, has good characteristics of high temperature resistance, chemical corrosion resistance and low dielectric loss. By using the mica bonding member, electrical isolation between the battery cells and the tray 40 can be achieved, avoiding the risk of short circuit. At the same time, it can also provide a certain degree of thermal stability, help the uniform distribution of heat, prevent local overheating, and significantly improve the safety and reliability of the battery pack 200. The mica bonding member may also absorb mechanical vibration to a certain extent, protect the battery cells from vibration damage, and extend the service life of the battery pack 200.

[0092] A vehicle according to the embodiments of the fourth aspect of the present utility model includes the battery pack 200 according to the embodiments of the third aspect of the present utility model as described above.

[0093] According to the vehicle of the embodiments of the present utility model, by applying the battery pack 200 in the above embodiments, when the vehicle encounters a collision, the design of the side beam 100 in 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 the occupants, and improve the safety of the vehicle.

[0094] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0095] In the description of the present utility model, the "first feature" and the "second feature" may include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more. In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0096] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0097] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A side beam (100), characterized in that: include: A side beam body (10), the side beam body (10) defining a cavity (11), the cavity (11) comprising 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) being opposite to each other, and the third side wall (14) being arranged between the first side wall (12) and the second side wall (13); A first reinforcing plate (20), wherein two ends of the first reinforcing plate (20) are respectively connected to the first side wall (12); a second reinforcing plate (23), two ends of the second reinforcing plate (23) being respectively connected to two ends of the second side wall (13); A third reinforcing plate (26), 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).

2. The side beam (100) according to claim 1, characterized in that: The first reinforcing plate (20) comprises: A first sub-plate (21), one end of the first sub-plate (21) being connected to the first side wall (12); A second sub-plate (22), one end of the second sub-plate (22) being connected to the first side wall (12), and the other end of the second sub-plate (22) and the other end of the first sub-plate (21) being connected to the one end of the third reinforcing plate (26).

3. The side beam (100) according to claim 2, characterized in that: 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 side beam (100) according to claim 3, characterized in that: The included angle between the first sub-plate (21) and the second sub-plate (22) is θ1, and θ1 satisfies: 50°≤θ1≤60°.

5. The side beam (100) according to claim 2, characterized in that: 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 side beam (100) according to claim 1, characterized in that: The second reinforcing plate (23) comprises: 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 two ends of the second side wall (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), and the other end of the third sub-plate (24) and the other end of the fourth sub-plate (25) extend obliquely toward each other along the width direction of the side beam (100).

7. The side beam (100) according to claim 6, characterized in that: 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 side beam (100) according to claim 1, characterized in that: The third reinforcing plate (26) is arranged parallel to the third side wall (14).

9. The side beam (100) according to claim 1, characterized in that: Also includes: a fourth side wall (15), the fourth side wall (15) being connected to one end of the first side wall (12) and the second side wall (13) along the height direction of the side beam (100), the third side wall (14) being connected to the other end of the first side wall (12) and the second side wall (13) along the height direction of the side beam (100), and the fourth side wall (15) being arranged in parallel with the third side wall (14); A fourth reinforcing plate (27), the fourth reinforcing plate (27) being vertically connected to the third reinforcing plate (26), and two ends of the fourth reinforcing plate (27) being respectively connected to the third side wall (14) and the fourth side wall (15).

10. The side beam (100) according to claim 9, characterized in that: 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 arranged 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 arranged on the other side of the third reinforcing plate (26) along the height direction of the side beam (100).

11. The side beam (100) according to claim 10, characterized in that: 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 side beam (100) according to claim 2, characterized in that: Also includes: a first anti-collision structure (30), the first anti-collision structure (30) being arranged on a side of the first side wall (12) away from the second side wall (13), the first anti-collision structure (30) being connected to one end of the first side wall (12) in a height direction of the side beam (100); A second anti-collision structure (32), wherein the second anti-collision structure (32) is arranged on a side of the first side wall (12) away from the second side wall (13), the second anti-collision structure (32) is connected to the other end of the first side wall (12) along the height direction of the side beam (100), and the first anti-collision structure (30) and the second anti-collision structure (32) are arranged at intervals along the height direction of the side beam (100).

13. The side beam (100) according to claim 12, characterized in that: At least one chamber is provided in the first anti-collision structure (30) and the second anti-collision structure (32).

14. The side beam (100) according to claim 12, characterized in that: The first anti-collision structure (30) comprises: a fifth side wall (31), the fifth side wall (31) being arranged on a side of the first anti-collision structure (30) adjacent to the first reinforcing plate (20) along the height direction of the side beam (100), and a connection point between the fifth side wall (31) and the first side wall (12) and a connection point between the first sub-plate (21) and the first side wall (12) being located on both sides of the first side wall (12) along the width direction of the side beam (100), and being opposite to each other along the width direction of the side beam (100).

15. The side beam (100) according to claim 12, characterized in that: The second anti-collision structure (32) comprises: a sixth side wall (33), the sixth side wall (33) being arranged on a 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 side wall (33) and the first side wall (12) and the connection point between the second sub-plate (22) and the first side wall (12) being located on both sides of the first side wall (12) along the width direction of the side beam (100), and being opposite to each other along the width direction of the side beam (100).

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

17. A tray (40), characterized in that: It comprises the edge beam (100) according to any one of claims 1-16.

18. A battery pack (200), characterized in that: include: A tray (40), wherein the tray (40) is the tray (40) as claimed in claim 17; At least one battery cell group (41), the battery cell group (41) being arranged in the tray (40), and the height of the battery cell group (41) along the side beam (100) of the tray (40) being less than or equal to the height of the side beam (100).

19. The battery pack (200) according to claim 18, characterized in that: At least one positioning groove (34) is formed on a side of the side beam (100) of the tray (40) facing the battery cell group (41), and a mica adhesive is provided in the positioning groove (34).

20. A vehicle, characterized in that: Comprising a battery pack (200) according to any one of claims 18-19.

Images