Parallel side beam structure for electric vehicles

Abstract

The present invention relates to a parallel type side beam structure for an electric vehicle, including: a side beam inner portion located on a side surface of a center floor, wherein the center floor forms a vehicle body bottom; a side beam outer portion coupled to the side beam inner portion and configured to form a side beam inner space; and a plurality of parallel members disposed in the side beam inner space in a longitudinal direction of the vehicle.

Description

Technical Field

[0001] This invention relates to a side beam structure for electric vehicles, and more specifically, to a scrum-type side beam structure for electric vehicles. Background Technology

[0002] The statements in this section are provided only as background information in relation to the present invention and do not constitute prior art.

[0003] Typically, electric vehicles meet the requirement of extended driving range by increasing the size of the high-voltage battery in the battery.

[0004] The reason is that electric vehicles can place the high-voltage battery at the lower end of the central floor, rather than in the traditional method of placing it on the rear floor, which is typically used in internal combustion engine vehicles. Specifically, the lower end of the central floor has structural features that ensure a layout that facilitates an increase in the size of the high-voltage battery.

[0005] Furthermore, with the rapid growth of the electric vehicle market in recent years, the safety of electric vehicles in the event of a pole collision (e.g., a telegraph pole collision) has become increasingly important. This is because the high-voltage battery, which poses a fire risk due to damage, is located at the lower end of the central floor. The high-voltage battery is more susceptible to damage from pole collisions in electric vehicles, thus increasing the risk of damage to the larger battery and also increasing the risk of fire in a pole collision.

[0006] Therefore, as the size of high-voltage batteries increases, electric vehicles with side-bar impact-enhanced structures have the advantage of reducing the risk of damage to high-voltage batteries. For this reason, it is not necessary to change the central floor structure by changing the side beams to extruded material side beams or steel-pressed side beams.

[0007] For example, extruded material side beams utilize extruded aluminum material as a grid structure within the internal / external space of the side beam (i.e., the support plate), thereby enhancing the side beam's impact stiffness. Conversely, steel-pressed side beams utilize multiple bent steel components connected together by welding, applying them as a bent structure within the internal / external space of the side beam (i.e., the support plate), further enhancing the side beam's impact stiffness.

[0008] Therefore, by utilizing large high-voltage batteries in the central floor to extend driving range, electric vehicle applications can employ side-bar collision reinforcement structures that reduce deformation caused by collisions with extruded material side beams or steel-pressed side beams, thereby addressing the rapidly growing electric vehicle market by extending driving range and enhancing collision safety.

[0009] However, compared to protecting high-voltage batteries by reducing collision deformation, extruded material side beams and steel compression side beams used in side bar collision reinforcement structures for electric vehicles have the following disadvantages.

[0010] For example, due to the high cost of aluminum extrusion materials, extruded material side beams face significant challenges in ensuring the cost competitiveness of electric vehicle bodies. Specifically, the transverse sections are indeed connected between structures, thus the sections inevitably expand during the lateral impact of a side bar collision.

[0011] For example, while steel profiled side beams are price-competitive with aluminum extrusion materials, their weight is significantly increased due to the multiple steel components and their welded connections, thus increasing the vehicle's overall weight. Specifically, steel profiled side beams not only have a directional tendency that favors supporting longitudinal loads, making them susceptible to damage from lateral impacts during side-bar collisions, but also exhibit greater cross-sectional deformation compared to aluminum extrusion materials, inevitably resulting in a disadvantage in terms of impact energy support performance.

[0012] Most importantly, the extruded material side beams and steel-pressed side beams have an internal structure that is not connected to the seat transverse members, thereby cutting off the load transfer caused by side rod impact. Here, the seat transverse members are components that constitute the vehicle body, used as transverse members within the central floor to support the lateral deformation of the side beams.

[0013] The background description is provided to help understand the background of the invention and may include content previously unknown to those skilled in the art. Summary of the Invention

[0014] This invention provides a parallel side beam structure for electric vehicles, which is directional. This directionality facilitates the support of lateral loads by employing parallel members with transversely and continuously arranged rigid cross-section structures and transverse cross-section structures connected between welded joint component structures, thereby facilitating the support of impact energy exerted by lateral impacts from side rod collisions. Specifically, the parallel members are connected to the seat transverse members via side beams, thereby achieving continuous load transfer through a triple-connection support structure.

[0015] A parallel side beam structure includes: an inner side beam, an outer side beam, and a plurality of first, second, third, and fourth parallel members. The inner side beam is located on the side surface of the central floor forming the bottom of the vehicle body. The outer side beam is connected to the inner side beam to form an inner space of the side beam. The plurality of first, second, third, and fourth parallel members are arranged in the inner space of the side beam along the longitudinal direction of the vehicle.

[0016] In one configuration, the interior of the side beam, the exterior of the side beam, and the parallel members are fixed by welding; specifically, the parallel members are fixed to the interior of the side beam by welding.

[0017] In one configuration, the first, second, third, and fourth parallel components are arranged adjacent to each other and along the longitudinal direction of the vehicle. Each of the first, second, third, and fourth parallel components consists of an upper bracket and a lower bracket, forming parallel internal spaces in the upper and lower brackets.

[0018] In one form, the first parallel member, the second parallel member, the third parallel member, and the fourth parallel member divide adjacent parallel members into front parallel members and rear parallel members, forming an upper connecting portion and a lower connecting portion. The upper connecting portion forms a triple connection between the upper support of the front parallel member and the upper and lower supports of the rear parallel member, and the lower connecting portion forms a triple connection between the upper and lower supports of the front parallel member and the lower support of the rear parallel member.

[0019] In one configuration, the upper and lower connecting portions are formed on the side surface portions of the upper and lower supports that contact each other, and the triple connection is fixed by welding.

[0020] In one configuration, the upper and lower supports are fixed by pipe nuts that are vertically positioned along a linear length to form parallel internal spaces.

[0021] In one configuration, the upper support uses the upper part of the fixing tube nut as the middle part forming the left curved airfoil and the right curved airfoil; the lower support uses the lower part of the fixing tube nut as the middle part forming the left vertical airfoil and the right vertical airfoil; the left curved airfoil and the left vertical airfoil engage with the right curved airfoil and the right vertical airfoil.

[0022] In one configuration, the upper bracket is connected to the interior of the side beam by making the left and right curved airfoils protrude more than the nut fasteners, and the lower bracket is connected to the interior of the side beam via the nut fasteners.

[0023] In one configuration, flange portions are formed both inside and outside the side beam, and these flange portions are connected to each other to form the internal space of the side beam.

[0024] In one configuration, the seat transverse members form a seat transverse end that overlaps with the interior of the side beams and parallel members.

[0025] In one configuration, the central floor forms the side beam ends, with the high-voltage battery located inside the side beam ends.

[0026] The following operations and effects are achieved by applying the present invention to a parallel side beam structure configured as part of the body of an electric vehicle.

[0027] First, the side stiffness of the electric vehicle body is enhanced by using parallel side beams to withstand the lateral impact of sidebar collisions. Second, the parallel members applied to the parallel side beams can reinforce the interior of the side beams using a directionality that favors supporting lateral loads, thus overcoming all the disadvantages of aluminum extrusion materials being susceptible to damage from lateral impacts and steel press-fit components being susceptible to impact energy support performance under longitudinal loads. Third, by forming connections between the structures of welded connecting components, the parallel members can form a parallel reinforcement pattern of a laterally and continuously arranged rigid cross-section structure, suitable for the length and internal structure of the side beams. Fourth, compared with traditional extruded material side beams and steel press-fit side beams, parallel side beams can improve performance and reduce cost and weight while performing the inherent functions of side beams. Fifth, the parallel side beams form a triple-connected support structure of parallel members / side beam interior / seat lateral members, thereby enabling the support structure to resist the lateral impact of sidebar collisions and continuously transfer the load towards the central floor.

[0028] Other applications will become apparent from the description provided herein. It should be understood that this specification and specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Attached Figure Description

[0029] To provide a good understanding of the invention, its various forms will now be described by way of example with reference to the accompanying drawings, in which:

[0030] Figure 1 This is a view showing the parallel side beam structure construction of the body frame of an electric vehicle according to the present invention;

[0031] Figure 2 This is a view illustrating the construction of parallel members according to the present invention applied to a parallel side beam structure;

[0032] Figure 3 This is a view illustrating an example of a lateral arrangement of parallel components according to the present invention;

[0033] Figure 4 This is a view showing an example of the cross-sectional construction of a parallel side beam structure for a vehicle body frame according to the present invention;

[0034] Figure 5 This is a view showing the lateral arrangement and connection state of the parallel members for constructing the cross-section of a parallel side beam structure according to the present invention;

[0035] Figure 6 This is a view illustrating the state of a lateral impact exerted on the side beam of the vehicle body frame by a side pole collision of an electric vehicle according to the present invention; and

[0036] Figure 7This is a view showing a simulated collision state, in which the lateral impact applied to the parallel side beam structure according to the invention ensures impact energy support performance through the lateral cross-section of the parallel members.

[0037] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Detailed Implementation

[0038] The following description is merely exemplary in nature and is not intended to limit the invention, application, or use. It should be understood that throughout the drawings, corresponding reference numerals denote the same or corresponding parts and features.

[0039] refer to Figure 1 The electric vehicle 1 includes side beams 7 attached to the lower part of the left and right side surfaces of the vehicle body frame 1-1.

[0040] Specifically, the vehicle frame 1-1 includes a central floor 3 that forms the main body of the vehicle body and its bottom surface, and seat transverse members 5 (see reference). Figure 4 For example, the main body shape of the vehicle body forms the body frame, the central floor 3 provides a place for the high-voltage battery 100 to be installed on its lower surface, and the seat transverse member 5 in the central floor 3 acts as a transverse member to support the transverse deformation of the side beam 7.

[0041] Specifically, the central floor 3 forms a stepped section (see...). Figures 4 to 6 Thus, the side beam 7 is located on its left and right side surfaces.

[0042] Specifically, the side beam 7 consists of an inner side beam 10, an outer side beam 20, and parallel members 30. The parallel members 30 are characterized by being parallel side beam structures that fill the inner space 7-1 of the side beam.

[0043] For example, the inner side beam 10 is welded to the stepped portion of the central floor 3 to become integral with the central floor 3, and the outer side beam 20 is welded to the inner side beam 10 to become integral with the inner side beam 10.

[0044] Therefore, the inner side beam 10 and the outer side beam 20 are formed as follows: The side beam interior space 7-1, which is filled with parallel members 30, is formed in a state where the flanges are welded to each other, and the flanges on the upper and lower parts of the side beam interior and exterior are in contact with each other.

[0045] Furthermore, both the inner side beam 10 and the outer side beam 20 have welded portions 10-1, which are configured as welded portions with perforations in the transverse direction (i.e., the longitudinal direction of the vehicle's front and rear). Specifically, the welded portions 10-1 of the inner side beam 10 are set at the welding positions of parallel reinforcing patterns (see reference). Figure 5 ).

[0046] For example, the parallel member 30 is composed of parallel members from the ath to the nth (a is 1, n is 2 or more integers), and the parallel members from the ath to the nth are continuously arranged in a manner formed by welding the inner side beam 10 and the outer side beam 20. In the transverse direction of the internal space 7-1 of the side beam.

[0047] Therefore, the side beam 7 is characterized by a parallel type side beam structure in which the internal space 7-1 of the side beam is filled with parallel reinforcing patterns through the transverse arrangement of the a to nth parallel members 30a, ..., 30n constituting the parallel members 30.

[0048] at the same time, Figure 2 and Figure 3 The specific construction of the parallel member 30 is shown. In this case, the parallel member 30 will be described as an example of n parallel members including the first to fourth parallel members 30a, ..., 30d, which are composed of four parallel members. However, the number can be changed to an appropriate number depending on the transverse length of the side beam 7, the required stiffness of the side beam, etc.

[0049] Therefore, the parallel member 30 is composed of a first parallel member 30a, a second parallel member 30b, a third parallel member 30c and a fourth parallel member 30d. Each of the first to fourth parallel members 30a, 30b, 30c and 30d is composed of the same parallel member assembly and is welded together in an adjacent state to form a transverse parallel member connection structure.

[0050] refer to Figure 2 The parallel component assembly shown, each of the first to fourth parallel components 30a, 30b, 30c, and 30d, consists of an upper bracket 31, a lower bracket 34, and a pipe nut 37.

[0051] For example, the upper bracket 31 is formed of a plate with a predetermined thickness. The left side of the nut fastening part 32, which forms a flat middle section, is bent with a two-stage bending structure and forms a left-side bent wing 33-1. The right side of the nut fastening part 32 is also bent with a two-stage bending structure and forms a right-side bent wing 33-2. In this case, the nut fastening part 32 positions the upper part of the tube nut 37 in the through-hole welding hole to form a welded part.

[0052] Therefore, the upper support 31 has left and right curved wings 33-1 and 33-2. The left and right curved wings 33-1 and 33-2, together with the nut fastening portions 32 and 35 as the middle part, form an approximately “3” shaped curved structure to enhance the rigidity of the upper support 31. Furthermore, the upper support 31 connects the welded portion 10-1 of the side beam interior 10 and the seat transverse end 5-1 of the seat transverse member 5 (see reference). Figure 4 The welded portion is positioned on the flat upper surface of the two-stage curved structure of the left and right curved airfoils 33-1 and 33-2.

[0053] For example, the lower bracket 34 is formed of a plate with a predetermined thickness. The left side of the nut fastening part 35, which forms a flat middle section, is bent in a vertical bending structure and formed as a left vertical wing 36-1, and the right side of the nut fastening part is bent in a vertical bending structure and formed as a right vertical wing 36-2. In this case, the nut fastening part 35 positions the lower part of the tube nut 37 in the through weld hole to form a welded part.

[0054] Therefore, the lower support 34 forms an approximately “U”-shaped vertical linear structure with the nut fastening part 35 as the middle part and the left and right vertical wings 36-1, 36-2, to facilitate the connection of the left and right curved wings 33-1, 33-2 of the upper support 31.

[0055] For example, the upper part of the tube nut 37 is positioned in the through welded hole of the nut fastening part 32 of the upper bracket 31 and fixed to the nut fastening part 32 by welding, and the lower part of the tube nut 37 is positioned in the through welded hole of the nut fastening part 35 of the lower bracket 34 and fixed to the nut fastening part 35 by welding.

[0056] Therefore, the tube nut 37 is a regular tube nut, but the upper bracket 31 and the lower bracket 34 are spaced apart and formed to have a predetermined length, thereby forming a parallel internal space 39 therebetween, wherein the predetermined length is set according to the internal space 7-1 of the side beam.

[0057] As described above, the upper support 31 and lower support 34, composed of the first parallel member 30a, the second parallel member 30b, the third parallel member 30c and the fourth parallel member 30d, are connected to the pipe nut 37 by welding to form a parallel internal space 39. The first parallel member 30a, the second parallel member 30b, the third parallel member 30c and the fourth parallel member 30d, formed by the first to fourth parallel members 30a, 30b, 30c and 30d, are integrated into one unit by being arranged laterally adjacent to each other.

[0058] Reference Figure 3 The lateral parallel member connection structure shown is configured such that the left and right sides of the lower bracket 34 and the left and right sides of the upper bracket 31 form an interlocking engagement structure on the lower side of the upper bracket 31. In this case, the interlocking engagement structure means that the left side of the lower bracket 34 enters the left side of the upper bracket 31, while the right side of the upper bracket 31 enters the right side of the lower bracket 34.

[0059] For example, the transverse parallel component connection structure is configured such that the left curved wing 33-1 of the upper support 31 surrounds the left vertical wing 36-1 of the lower support 34, while the right vertical wing 36-2 of the lower support 34 surrounds the right curved wing 33-2 of the upper support 31, thereby forming a state in which the upper support 31 and the lower support 34 are intersected.

[0060] The first to fourth parallel frames 30a, 30b, 30c, and 30d are configured such that the left and right edges of the first parallel member 30a and the fourth parallel member 30d allow the left curved airfoil 33-1 of the upper support 31 to externally surround and weld the left vertical airfoil 36-1 of the lower support 34 to integrate the left edge for the parallel reinforcement pattern structure, and the right vertical airfoil 36-2 of the lower support 34 to externally surround and weld the right curved airfoil 33-2 of the upper support 31 to integrate the right edge for the parallel reinforcement pattern structure.

[0061] Furthermore, the first to fourth parallel members 30a, 30b, 30c, and 30d that are adjacent to each other form an upper connecting portion for the upper part and a lower connecting portion for the lower part of the side beam interior 10.

[0062] For example, the connection between the first parallel member 30a and the second parallel member 30b is configured such that the right-side connection of the first parallel member 30a and the left-side connection of the second parallel member 30b are attached and welded to each other. That is, the right-side connection of the first parallel member is formed by allowing the lower support 34 of the first parallel member 30a to externally surround and weld the right-side curved wing 33-2 of the upper support 31 via the right-side vertical wing 36-2. Further, the left-side connection of the second parallel member is formed by allowing the upper support 31 of the second parallel member 30b to externally surround and weld the left-side vertical wing 36-1 of the lower support 34 via the left-side curved wing 33-1.

[0063] For example, the connection between the second parallel member 30b and the third parallel member 30c is configured such that the right-side connection of the second parallel member 30b and the left-side connection of the third parallel member 30c are attached and welded to each other. That is, the right-side connection of the second parallel member is formed by allowing the lower support 34 of the second parallel member 30b to externally surround and weld the right-side curved airfoil 33-2 of the upper support 31 via the right-side vertical airfoil 36-2. Similarly, the left-side connection of the third parallel member is formed by allowing the upper support 31 of the third parallel member 30c to externally surround and weld the left-side vertical airfoil 36-1 of the lower support 34 via the left-side curved airfoil 33-1.

[0064] For example, the connection between the third parallel member 30c and the fourth parallel member 30d is configured such that the right-side connection of the third parallel member 30c and the left-side connection of the fourth parallel member 30d are attached and welded to each other. That is, the right-side connection of the third parallel member is formed by allowing the lower support 34 of the third parallel member 30c to externally surround and weld the right-side curved airfoil 33-2 of the upper support 31 via the right-side vertical airfoil 36-2. Similarly, the left-side connection of the fourth parallel member is formed by allowing the upper support 31 of the fourth parallel member 30d to externally surround and weld the left-side vertical airfoil 36-1 of the lower support 34 via the left-side curved airfoil 33-1.

[0065] Therefore, when adjacent parallel members are divided into front parallel members and rear parallel members by the lateral arrangement of the first to fourth parallel members 30a, 30b, 30c, and 30d, the upper connecting portion forms a triple connection between the upper support 31 of the front parallel member (i.e., the first parallel member 30a) and the upper support 31 and lower support 34 of the rear parallel member (i.e., the second parallel member 30b), and the lower connecting portion forms a triple connection between the upper support 31 and lower support 34 of the front parallel member (i.e., the first parallel member 30a) and the lower support 34 of the rear parallel member (i.e., the second parallel member 30b).

[0066] Therefore, the parallel members 30 are configured as a plurality of parallel members, which include first to fourth parallel members 30a, 30b, 30c, and 30d that fill the interior space 7-1 of the side beam in the transverse direction. The first to fourth parallel members are integrated and fixed by upper connecting portions at the upper part and lower connecting portions at the lower part relative to their transverse cross sections, thereby forming a parallel reinforcement pattern with interconnected structures among the parallel members in an adjacent state. Specifically, the parallel reinforcement pattern helps to form a strong transverse cross-sectional force (f) in the longitudinal direction of the vehicle (see...). Figure 7 ).

[0067] at the same time, Figure 4 and Figure 5 Specifically, the features of the parallel side beam structure applied to side beam 7 are shown.

[0068] See Figure 4 The side beam 7 is located on the stepped portion of the central floor 3 to use the seat transverse end 5-1 as a welded connection portion and to connect at least one seat transverse member 5.

[0069] Specifically, in Figure 4In the section AA shown, the side beam 7 forms the side beam interior space 7-1 by welding the flange portions of the side beam interior 10 and the side beam exterior 20. The parallel member 30 is welded to the step portion through the welded portion 10-1 of the side beam interior 10 in the side beam interior space 7-1 to connect to the central floor 3, and is welded to the seat transverse end 5-1 to connect to the seat transverse member 5.

[0070] See Figure 5 With the first to fourth parallel members 30a, 30b, 30c, and 30d arranged in the transverse direction with the same width and height as the internal space 7-1 of the side beam, the parallel internal space 39 forms a continuous transverse rigid section.

[0071] Specifically, through the continuous connection between the structures of the first to fourth parallel members 30a, 30b, 30c, and 30d, a lateral rigid section is formed by a parallel reinforcement pattern similar to a scrum pattern in rugby. The performance of the parallel reinforcement pattern is better than that of the internal / external structure of the side beam (i.e., parallel member 30 and seat lateral member 5), thus forming a lateral rigid section with stronger resistance to lateral impact F (see...). Figure 7 ).

[0072] Furthermore, each of the first to fourth parallel components 30a, 30b, 30c, and 30d allows the upper support 31 to form two welded portions using the flat upper surface portions of the left and right curved wings 33-1 and 33-2, and allows the lower support 34 to form two welded portions using the nut fastener 35.

[0073] Specifically, the welded portion of the upper support 31 forms a parallel reinforcing pattern, forming a parallel reinforcing pattern in the welded structure, wherein the welded portion 10-1 of the side beam interior 10, the left and right curved wings 33-1, 33-2 of the upper support 31, and the seat transverse end 5-1 of the seat transverse member 5 overlap each other to form a direct welded connection structure between the internal / external structures of the side beam (i.e., the parallel member 30 and the seat transverse member 5) relative to the side beam 7.

[0074] As described above, the parallel reinforcement pattern allows the parallel members 30 of the seat transverse member 5 / side beam interior 10 / side beam interior structure to achieve continuous load transfer and structural support with triple connection, thereby eliminating the disadvantages of the conventional structure, in which load transfer is interrupted because the seat transverse member 5 and the side beam interior structure (i.e., aluminum extrusion material or steel press component) are not connected.

[0075] at the same time, Figure 6 and Figure 7The simulated performance results are shown in a side bar collision test in which the first to fourth parallel members 30a, 30b, 30c, and 30d are applied as parallel members 30 to the side beam 7 in a side bar collision test of an electric vehicle 1 colliding with a collision body 200.

[0076] in this case, Figure 6 and Figure 7 The simulated performance results shown are obtained under the following conditions.

[0077] For example, in a parallel side beam structure applied to an electric vehicle 1, the inner side beam 10 is located on the side surface of the central floor 3 forming the bottom of the vehicle body, the outer side beam 20 is connected to the inner side beam 10 to form the inner side beam space 7-1, and the parallel members 30 are arranged in the inner side beam space 7-1 in the transverse direction and form a transverse section of the inner side beam space 7-1 with a parallel reinforcing pattern.

[0078] Therefore, the electric vehicle 1 includes: a side beam 7, a central floor 3, a seat transverse member 5, and a high-voltage battery 100. The side beam 7 uses multiple first, second, third, and fourth parallel members 30a, 30b, 30c, and 30d to form a transverse section of the side beam interior space 7-1 with a parallel reinforcement pattern. The central floor 3 forms the bottom of the vehicle body, and the longitudinal beam 7 is connected to its left and right sides. The seat transverse member 5 supports the transverse deformation of the central floor 3 and is connected to multiple first, second, third, and fourth parallel members 30a, 30b, 30c, and 30d. The high-voltage battery 100 is installed in the lower part of the central floor 3 and is inside (on the side) of the side beam interior space 7-1. The side beam interior space 7-1 is connected to the side beam interior 10 located on the side surface of the central floor 3 that forms the bottom of the vehicle body via the side beam exterior 20.

[0079] Specifically, the central floor 3, the seat transverse member 5, the inner side beam 10, the outer side beam 20, and multiple first, second, third, and fourth parallel members 30a, 30b, 30c, and 30d are connected by welding. With the multiple first, second, third, and fourth parallel members 30a, 30b, 30c, and 30d adjacent to each other and arranged in the transverse direction in the longitudinal direction of the vehicle, the parallel reinforcing patterns form a triple connection structure relative to each other.

[0080] Furthermore, the central floor 3 forms a side beam end, the side beam 7 is connected to its left and right sides, and a plurality of seat transverse members 5 formed at intervals form seat transverse ends 5-1. The seat transverse ends 5-1 are connected to a plurality of first, second, third and fourth parallel members 30a, 30b, 30c and 30d respectively in a state of overlapping with the interior of the side beam 10.

[0081] refer to Figure 6In the side impact test, the impactor 200 collides with the side beam 7, thereby distributing the lateral impact (F) exerted by the impactor 200 through the parallel members 30 of the side beam 7 to the central floor 3 and the seat lateral members 5, and transmitting it to the high-voltage battery 100 installed under the central floor 3.

[0082] refer to Figure 7 The side beam 7 forms a transverse section in which the first to fourth parallel members 30a, 30b, 30c, and 30d are continuous in the transverse direction within the interior space 7-1 of the side beam, and the transverse section forms a pattern for parallel reinforcement (see...). Figure 3 The supporting force (f) of the transverse section of the continuous parallel reinforcing pattern of the structure.

[0083] Therefore, the support force (f) of the transverse section achieves the main energy absorption performance of the transverse impact (F) applied to the collider 200, thereby suppressing the side beam 7 from being pushed towards the high-voltage battery 100.

[0084] Furthermore, the side beam 7 forms a parallel reinforcement pattern of a triple connection structure having the seat transverse member 5 / side beam interior 10 / side beam interior structure and parallel member 30 (see...). Figure 5 The parallel reinforcing patterns support the transverse sections of the first to fourth parallel members 30a, 30b, 30c, and 30d within the central floor 3.

[0085] Therefore, the parallel reinforcing pattern, as a transverse section support structure, achieves secondary energy absorption performance of the transverse impact (F) applied to the collider 200, thereby further enhancing the energy distribution and support performance of the transverse section support force (f).

[0086] As described above, the parallel side beam 7 can have a structure with a continuous parallel reinforcement pattern for the first to fourth parallel members 30a, 30b, 30c, 30d, and the parallel reinforcement pattern provides two energy absorption / distribution and support performance, thereby eliminating structural disadvantages. This is because when using conventional aluminum extrusion materials or steel press components, the seat transverse member 5 and the internal structure of the side beam are not connected, thus cutting off load transmission.

[0087] Therefore, the simulation results of the side bar impact test demonstrate that, compared with the application of traditional aluminum extrusion materials or steel press components, the parallel side bar 7 reduces the side bar intrusion (L) caused by the lateral impact (F) applied by the impactor 200 by about 15% to 25%, thereby ensuring the safety of the high voltage battery 100 by reducing the degree of damage risk.

[0088] As described above, the side beam 7 of the electric vehicle 1 according to the present invention may include a parallel side beam structure forming a transverse cross-section of a side beam interior space 7-1 with a parallel reinforcement pattern. Multiple first, second, third, and fourth parallel members 30a, 30b, 30c, and 30d are connected to each other within the side beam interior space 7-1 to form a structure for the parallel reinforcement pattern. The side beam interior space 7-1 is formed by connecting the side beam exterior 20 to the side beam interior 10 located on the side surface of the central floor 3 forming the bottom of the vehicle body. The present invention provides directionality that facilitates the use of a transverse cross-section structure and a transversely and continuously arranged rigid cross-section structure to support lateral loads, thus facilitating the support of impact energy exerted by lateral impacts from side-bar collisions. Specifically, the multiple first, second, third, and fourth parallel members 30a, 30b, 30c, and 30d can be connected to the seat transverse member 5 via the side beam 7, thereby continuously transmitting loads using a triple-link support structure.

Claims

1. A side beam structure for an electric vehicle, comprising: Inside the side beam, it is located on the side surface of the central floor, wherein the central floor forms the bottom of the vehicle body; The exterior of the side beam connects to the interior of the side beam and is configured to form an interior space of the side beam. Multiple parallel components are arranged in the interior space of the side beam along the longitudinal direction of the electric vehicle; Each of the multiple parallel components includes an upper support and a lower support, and parallel internal spaces are formed in the upper support and the lower support; Among a plurality of parallel components, the parallel components are arranged adjacent to each other, and the parallel components are divided into front parallel components and rear parallel components. At least one of the parallel components forms an upper connecting part and a lower connecting part. The upper connecting portion connects the upper support of the front parallel component, the upper support of the rear parallel component, and the lower support of the rear parallel component, and The lower connecting portion connects the upper support of the front parallel component, the lower support of the front parallel component, and the lower support of the rear parallel component.

2. The side beam structure of the electric vehicle according to claim 1, wherein, The plurality of parallel components are fixed to the interior of the side beam by welding.

3. The side beam structure of the electric vehicle according to claim 1, wherein, The upper connecting portion and the lower connecting portion are formed on the side surface portions of the upper bracket and the lower bracket that are in contact with each other.

4. The side beam structure of the electric vehicle according to claim 1, wherein, The upper support of the front parallel component, the upper support of the rear parallel component, and the lower support of the rear parallel component are connected by welding. The upper support of the front parallel component, the lower support of the front parallel component, and the lower support of the rear parallel component are connected by welding.

5. The side beam structure of the electric vehicle according to claim 1, wherein, The upper support and the lower support are fixed together by tube nuts to form the parallel internal space.

6. The side beam structure of the electric vehicle according to claim 5, wherein... The nut fastening part of the upper bracket that fixes the upper part of the tube nut is configured to form the middle part of the left curved wing and the right curved wing. The nut fastening part of the lower bracket that fixes the lower portion of the tube nut is configured to form the middle part of the left vertical wing and the right vertical wing, and The left curved wing and the left vertical wing engage with the right curved wing and the right vertical wing.

7. The side beam structure of the electric vehicle according to claim 6, wherein, The upper bracket is connected to the interior of the side beam by making the left and right curved wings protrude more than the nut fastener.

8. The side beam structure of the electric vehicle according to claim 6, wherein, The lower bracket is connected to the inside of the side beam via the nut fastening part.

9. The side beam structure of the electric vehicle according to claim 5, wherein, The tube nuts are vertically arranged in parallel internal spaces with linear length.

10. The side beam structure of the electric vehicle according to claim 1, wherein, Multiple parallel components are connected to the seat transverse components located on the upper part of the central floor.

11. The side beam structure of the electric vehicle according to claim 1, wherein, It also includes a high-voltage battery installed on the central floor.

Images