Collision test system and vehicle development method

Abstract

The invention relates to the technical field of automobile research and development, and particularly provides a collision test system and a vehicle development method. The collision test system comprises a plurality of test assemblies respectively matched with each vehicle part, a trolley capable of moving on a set advancing path, and a rigid barrier arranged at the tail end of the advancing path, a mounting substrate is arranged at the front end of the trolley, the testing assembly comprises a fixed mounting part for fixedly mounting a vehicle part and an impact module for impacting the vehicle part, and the impact module and the fixed mounting part are respectively arranged on the mounting substrate and the rigid barrier in an exchangeable manner. According to the collision test system provided by the invention, the collision test task of each vehicle part can be completed by using one trolley by adapting to various test components, so that the problem that the simulation analysis verification precision of the vehicle parts is insufficient is solved, the number of times of the whole vehicle collision test is reduced, and the vehicle research and development cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile research and development, and in particular to a collision test system. In addition, the present invention also relates to a vehicle development method. Background Art

[0002] During the vehicle design and development process, the development of vehicle safety performance requires at least two rounds of vehicle collision tests, ET (Engineering Trial, referring to the engineering debugging-design verification stage) and PT (Production Trial, referring to the production debugging-production verification stage). Only one round of ET collision cannot achieve the goal, and the PT stage needs to be verified to finally ensure that safety performance is achieved. Multiple rounds of collision tests lead to high R&D costs. The main reason is that the detailed design stage before ET uses finite element simulation analysis models, and the simulation model is not accurate enough, which often leads to serious body failure problems when conducting ET collision tests.

[0003] If such serious body failure problems are not rectified and PT stage verification is not carried out, the problems will be exposed again after the model is launched on the market, which will bring irreparable serious consequences to customers. This in turn requires multiple rounds of collision test verification to ensure that the final design product meets various safety performance requirements, which will inevitably lead to high time and financial costs in the entire R&D process. Summary of the invention

[0004] In view of this, the present invention aims to propose a collision test system to provide a system solution that can perform collision tests on various vehicle components separately, thereby helping to reduce vehicle research and development costs.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A collision test system for collision testing of various vehicle components, the collision test system comprising various test components respectively adapted to the various vehicle components, a trolley capable of moving on a set travel path, and a rigid barrier arranged at the end of the travel path;

[0007] A mounting base is provided at the front end of the trolley. The test assembly includes a fixing part for fixing the vehicle component and an impact module for impacting the vehicle component. The impact module and the fixing part are interchangeably arranged on the mounting base and the rigid barrier, respectively.

[0008] Furthermore, the arrangement position of the impact module and / or the fixing component on the mounting substrate is adjustable.

[0009] Furthermore, it also includes a collision force detection device disposed on the mounting substrate; the collision force detection device includes a sensor, and a base and a mounting plate disposed at both ends of the sensor;

[0010] The base is fixedly mounted on the mounting base plate in an adjustable manner, and the mounting plate is used to connect the impact module or the fixing member.

[0011] Furthermore, it also includes a damping device arranged on the rigid barrier; the damping device is used to withstand the impact from the mounting substrate, and the damping device includes a fixing seat fixedly connected to the rigid barrier, and a damping tube extending from the fixing seat in a direction away from the rigid barrier.

[0012] Furthermore, the test assembly includes a B-pillar test assembly adapted to the B-pillar, the impact module of the B-pillar test assembly includes a first mounting seat arranged on the mounting substrate, and a first impact column arranged on the first mounting seat; the fixing part of the B-pillar test assembly includes a B-pillar fixing frame arranged on the rigid barrier.

[0013] Furthermore, the test assembly includes a battery pack test assembly adapted to the battery pack, the impact module of the battery pack test assembly includes a fixed bracket provided on the mounting substrate, and a second impact column provided on the fixed bracket; the fixing part of the battery pack test assembly includes a battery pack fixing frame provided on the rigid barrier, and the battery pack is fixed on the battery pack fixing frame.

[0014] Furthermore, the battery pack fixing frame includes a main frame, and a fixed table and a blocking plate arranged on the main frame; the battery pack is fixed on the fixed table, and the blocking plate is located on a side of the battery pack close to the rigid barrier and abuts against the battery pack.

[0015] Furthermore, the battery pack is fastened to the fixed table surface by a plurality of mounting blocks, and the fastening position of each mounting block on the fixed table surface is adjustable.

[0016] Furthermore, the test component includes a vehicle front end skeleton test component adapted to the vehicle front end skeleton, the impact module of the vehicle front end skeleton test component includes an anti-collision beam impact column fixedly mounted on the mounting substrate, and the fixing part of the vehicle front end skeleton test component includes a plurality of second mounting seats; the vehicle front end skeleton includes an anti-collision beam, and the anti-collision beam is fixed to the rigid barrier through the second mounting seat.

[0017] Furthermore, the test component includes a front-end vehicle frame test component adapted to the front-end vehicle frame, the impact module of the front-end vehicle frame test component includes a longitudinal beam impact block fixed on the rigid barrier, and the fixing part of the front-end vehicle frame test component includes a plurality of second mounting seats; the front-end vehicle frame includes a longitudinal beam, and an anti-collision beam arranged at the front end of the longitudinal beam, and the rear end of the longitudinal beam is fixed to the mounting base through the second mounting seat.

[0018] Furthermore, the test assembly includes a surface impact test assembly adapted to the A-pillar, the door sill beam, and the front panel, the impact module of the surface impact test assembly includes an impact panel disposed on the mounting substrate, and the fixing part of the surface impact test assembly includes a fixing frame disposed on the rigid barrier; the A-pillar, the door sill beam, and the front panel can be respectively fixed on the fixing frame to withstand the impact of the impact panel.

[0019] Furthermore, the impact panel includes a sill beam impact panel adapted to the sill beam, and a front panel impact panel adapted to the front panel; the top of the sill beam impact panel is formed with a first flange bent toward the side of the mounting substrate, and / or the side of the front panel impact panel is formed with a second flange bent toward the side of the mounting substrate.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] The collision test system of the present invention, by respectively adapting a variety of test components to a plurality of vehicle components related to vehicle safety, can complete the collision test tasks of various vehicle components using a single trolley, thereby compensating for the problem of insufficient accuracy of simulation analysis and verification of vehicle components, thereby reducing the number of vehicle collision tests during the development of vehicle safety performance, and helping to reduce vehicle R&D costs.

[0022] In addition, a large number of mounting holes are provided on the mounting substrate. When the impact module or the fixing part is installed on the mounting substrate, the impact module or the fixing part can be fixed to the most suitable position by selecting the mounting holes at suitable positions, so that the impact module collides with the correct position on the vehicle component, thereby meeting the requirements of the collision test.

[0023] In addition, by installing a collision force detection device on the mounting substrate and installing the impact module or fixed parts on the mounting plate of the collision force detection device, the sensor can accurately detect the impact force and its changes during the entire collision process, thereby providing accurate data for the collision test. When the safety performance of the vehicle component being tested fails, the trolley will continue to impact the rigid barrier. A damping device is set on the rigid barrier. The damping device can buffer and intercept the trolley to prevent the trolley from directly hitting the rigid barrier, thereby preventing the trolley and the test components from being damaged.

[0024] A vehicle development method, the method comprising:

[0025] During the design verification phase of the vehicle, the collision test system of the present invention is used to perform collision tests on vehicle components;

[0026] The safety design content of the vehicle component is modified according to the test results of the collision test.

[0027] The vehicle development method of the present invention has the technical advantages possessed by the above-mentioned collision test system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which constitute part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention. The directional terms such as front and back, up and down, etc. involved therein are only used to indicate relative positional relationships and do not constitute improper limitations on the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the overall structure of the trolley according to an embodiment of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the damping device according to an embodiment of the present invention;

[0031] Figure 3 It is a structural schematic diagram of a collision force detection device according to an embodiment of the present invention;

[0032] Figure 4 This is a structural schematic diagram of a B-pillar impact module fixedly mounted on a trolley according to an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of a collision test scenario of a B-pillar according to an embodiment of the present invention;

[0034] Figure 6 It is a structural schematic diagram of a battery pack impact module fixedly mounted on a trolley according to an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of a structure in which a battery pack according to an embodiment of the present invention is fixed on a battery pack fixing frame;

[0036] Figure 8 It is a structural schematic diagram of the second mounting seat and the collision force detection device according to an embodiment of the present invention being fixedly mounted on a trolley;

[0037] Fig. 9 A schematic diagram of a collision test scenario of a longitudinal beam according to an embodiment of the present invention;

[0038] Fig.10A schematic diagram of a collision test scenario of an anti-collision beam according to an embodiment of the present invention;

[0039] Fig.11 This is a structural schematic diagram of an A-pillar impact panel fixedly mounted on a trolley according to an embodiment of the present invention;

[0040] Fig.12 A schematic diagram of a collision test scenario of an A-pillar according to an embodiment of the present invention;

[0041] Fig.13 This is a schematic structural diagram of a threshold beam impact module according to an embodiment of the present invention being fixedly mounted on a trolley;

[0042] Fig.14 A schematic diagram of a collision test scenario of a door sill beam according to an embodiment of the present invention;

[0043] Fig.15 This is a schematic structural diagram of a front impact module fixedly mounted on a trolley according to an embodiment of the present invention;

[0044] Fig.16 A schematic diagram of a collision test scenario of a front wall according to an embodiment of the present invention;

[0045] Fig.17 A top view of a front impact module according to an embodiment of the present invention;

[0046] Fig.18 The figure is a schematic diagram of the overall process of the vehicle development method according to an embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 1. Trolley; 10. Frame; 11. Wheel; 12. Mounting base plate; 120. Mounting hole;

[0049] 20. collision force detection device; 200. base; 201. sensor; 202. mounting plate; 21. damping device; 210. fixing seat; 211. damping tube;

[0050] 3. A-pillar test assembly; 30. A-pillar impact panel; 31. A-pillar fixing bracket; 310. upper fixing seat; 311. lower fixing seat; 312. lower support frame;

[0051] 4. B-pillar test assembly; 40. B-pillar impact module; 400. first mounting seat; 401. first impact column; 41. B-pillar fixing bracket;

[0052] 50, battery pack impact module; 500, second impact column; 501, fixing bracket; 51, battery pack fixing frame; 510, main frame; 511, fixing table; 512, blocking plate; 513, mounting block; 514, fixing hole; 515, avoidance gap;

[0053] 6. Vehicle front end frame test assembly; 60. Longitudinal beam impact block; 61. Second mounting seat; 62. Anti-collision beam impact column;

[0054] 7. Threshold beam test assembly; 70. Threshold beam impact module; 700. Third mounting seat; 701. Threshold beam impact panel; 7010. First flange; 71. Threshold beam fixing frame; 710. Base; 711. Fixing groove; 712. Support beam;

[0055] 8. Front wall test assembly; 80. Front wall impact module; 800. Fixed frame; 8001. Connecting bottom plate; 8002. Supporting longitudinal beam; 8003. Supporting diagonal beam; 801. Front wall impact panel; 8010. Second flange; 81. Front wall fixing frame;

[0056] 9. Rigid barrier; 901. A-pillar; 902. B-pillar; 903. Battery pack; 904. Anti-collision beam; 905. Door sill beam; 906. Front surround; 907. Longitudinal beam; 908. Longitudinal beam support frame. DETAILED DESCRIPTION

[0057] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0058] In the description of the present invention, it should be stated that if terms indicating directions or positional relationships such as "up, down, left, right, front, back, inside, outside" appear, they are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operate in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0059] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection", and "connector" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances. The limiting terms such as "first, second, A, B, C, D" that appear in the description of the present invention are only for distinguishing similar features of different positions, affiliations or uses, so as to achieve the purpose of avoiding ambiguity and confusion in the description, and cannot be understood as indicating or implying relative importance.

[0060] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0061] Embodiment 1

[0062] This embodiment relates to a collision test system, which is used for collision tests of various vehicle components, and provides a system solution that can perform collision tests on various vehicle components separately, which helps to reduce vehicle R&D costs; an exemplary structure thereof is as follows Figure 1 , Figure 2 and Figure 3 shown.

[0063] In general, the collision test system includes a plurality of test components respectively adapted to each vehicle component, a trolley 1 capable of moving on a set travel path, and a rigid barrier 9 arranged at the end of the travel path. Among them, a mounting base 12 is arranged at the front end of the trolley 1, and the test components include a fixing part for fixing the vehicle component and an impact module for impacting the vehicle component. The impact module and the fixing part are interchangeably arranged on the mounting base 12 and the rigid barrier 9, respectively.

[0064] It should be pointed out that based on the above-mentioned overall design concept, the technical solution of the present invention can adopt a variety of different specific implementation structures, forms or configuration sequences. For example, the above-mentioned vehicle components may include A-pillar 901, B-pillar 902, battery pack 903, etc., and various vehicle components related to vehicle collision safety and vehicle subsystems can be selected according to the vehicle body safety performance requirements; the rigid barrier 9 can be a steel plate fixed on the ground, or a barrier such as a wall. The specific setting sequence and assembly method of the impact module, fixed parts, etc. on the trolley 1 or the rigid barrier 9 can also be flexibly adjusted. For the parts required for the implementation of the overall solution but not involved in the above-mentioned overall setting, reasonable and flexible design can be made with reference to the mature setting means in the field, the actual situation during implementation, etc. The specific implementation scheme described below in this embodiment is only one of the better solutions that can be formed by the above-mentioned various combinations and their changes. In actual implementation, those skilled in the art can make flexible adjustments and improvements based on the actual situation. Obviously, the many solutions that can be formed by the above-mentioned various specific forms of combination and its changes, as well as the specific implementation scheme of this embodiment, are all within the scope of protection of the present invention.

[0065] Specifically, the trolley 1 of this embodiment includes a frame 10 and wheels 11, and the above-mentioned mounting base 12 is fixedly mounted on the front end of the frame 10. Of course, for the key parameters of the trolley 1 such as the center of mass, weight, speed, brake, guide, ground clearance, etc., a reasonable design can be made based on the test needs, and a multifunctional setting can be made according to the corresponding needs; however, it should be ensured that the stress on the trolley 1 meets the maximum load-bearing requirements to ensure the overall strength of the trolley 1.

[0066] In the present embodiment, the frame 10 of the trolley 1 adopts a box-type frame design as a whole, and the main body of the frame is welded with 80*80*4mm square steel. The frame of the mounting substrate 12 is welded on the front face, and the inclined support and reinforcing rib design are adopted to ensure that the impact force is completely and evenly borne by the body of the trolley 1. The mounting substrate 12 can be made of aluminum material to make the trolley 1 more lightweight. In addition, in order to meet the needs of different fixed positions, preferably, the impact module or the fixed part should be fixed to the mounting substrate 12 in an adjustable position; of course, it is best that both the impact module and the fixed part can adjust the fixed position. Therefore, a plurality of mounting holes 120 are arranged at intervals on the mounting substrate 12 of the present embodiment, and the impact module or the fixed part is fixed to the mounting substrate 12 through a plurality of mounting holes 120; by changing different mounting holes 120, the fixed position of the impact module or the fixed part on the mounting substrate 12 can be adjusted. The arrangement size of the mounting holes 120 can be reasonably set, for example, a matrix arrangement of 100*100mm is adopted; a steel bushing can be embedded in the mounting base plate 12 to ensure a good bolt tightening effect. The following collision force detection device 20 can be installed on the mounting base plate 12 to collect the impact crushing force of the vehicle components. The split bridge is bolted on both sides of the box-shaped frame of the frame 10, and the split bridge is installed with wheels 11 to ensure the driving performance of the trolley 1.

[0067] A large number of mounting holes 120 are provided on the mounting substrate 12. When the impact module or the fixing part is installed on the mounting substrate 12, the fixing position of the impact module or the fixing part on the mounting substrate 12 can be flexibly adjusted; by selecting the mounting holes 120 at suitable positions, the impact module or the fixing part can be fixed to the most suitable position, so that the impact module collides with the correct position on the vehicle component, thereby meeting the requirements of the collision test.

[0068] In addition, the collision test system of this embodiment also includes a collision force detection device 20 disposed on the mounting substrate 12; the collision force detection device 20 includes a sensor 201, and a base 200 and a mounting plate 202 disposed at both ends of the sensor 201; wherein the base 200 is fixedly connected to the mounting substrate 12 through a plurality of mounting holes 120, and the mounting plate 202 is used to fix the impact module or the fixing part. The collision force detection device 20 is installed on the mounting substrate 12, and the impact module or the fixing part is installed on the mounting plate 202 of the collision force detection device 20, and the sensor 201 can accurately detect the impact force and its changes during the entire collision process, thereby providing accurate data for the collision test.

[0069] Meanwhile, the collision test system of this embodiment further includes a damping device 21 disposed on the rigid barrier 9. The damping device 21 includes a fixing seat 210 fixedly connected to the rigid barrier 9, and a damping tube 211 extending from the fixing seat 210 in a direction away from the rigid barrier 9. The damping tube 211 here can be a threading tube with a diameter of 50 mm, an elastic telescopic tube, etc.

[0070] When arranging the damping device 21, Figure 5 , Fig. 9 As shown in , the damping device 21 can be arranged at a position where the test component can be avoided from impact, so as to be able to bear the impact from the mounting substrate 12. When the safety performance of the vehicle component under test fails, the trolley 1 will continue to impact the rigid barrier 9. The damping device 21 is arranged on the rigid barrier 9. The damping device 21 can buffer and intercept the trolley 1, preventing the trolley 1 from directly impacting the rigid barrier 9, thereby preventing the trolley 1 and the test component from being damaged.

[0071] As mentioned above, the types of vehicle components can be reasonably determined according to the needs of vehicle development and safety verification. In this embodiment, the A-pillar 901, the B-pillar 902, the battery pack 903, the anti-collision beam 904, the threshold beam 905, the front wall 906, the longitudinal beam 907 and the like are taken as examples, and are described as follows:

[0072] like Figure 3 , Figure 4 and Figure 5 As shown, the above-mentioned test assembly includes a B-pillar test assembly 4 adapted to the B-pillar 902. The impact module of the B-pillar test assembly 4 is a B-pillar impact module 40, and the B-pillar impact module 40 includes a first mounting seat 400 disposed on the mounting substrate 12, and a first impact column 401 disposed on the first mounting seat 400. The fixed part of the B-pillar test assembly 4 includes a B-pillar fixing frame 41 disposed on the rigid barrier 9.

[0073] Among them, the first mounting seat 400 can be prepared by cutting a section of channel steel, and the first mounting seat 400 is fixed to the receiving plate 202 of the collision force detection device 20. The base 200 of the collision force detection device 20 can be provided with a long hole, and the base 200 is fastened to the mounting hole 120 by bolts passing through the long hole. The long hole on the base 200 can better adjust the fixed position of the collision force detection device 20 on the mounting substrate 12. The first impact column 401 preferably adopts a rigid column with an outer diameter of 120mm and an inner diameter of 90mm, which can be welded to the first mounting seat 400. When installing the B-pillar impact module 40, the first impact column 401 should be vertically distributed with the B-pillar 902 located on the B-pillar fixing frame 41, and the middle position of the first impact column 401 hits the middle position of the B-pillar 902. The B-pillar test assembly 4 can be used to carry out impact tests on the B-pillar 902 and its subsystems, thereby improving the simulation model accuracy of the B-pillar 902 in the research and development design stage.

[0074] like Figure 6 , Figure 7As shown, the above-mentioned test assembly also includes a battery pack test assembly adapted to the battery pack 903, and the impact module of the battery pack test assembly is the battery pack impact module 50; the battery pack impact module 50 includes a fixing bracket 501 disposed on the mounting substrate 12, and a second impact column 500 disposed on the fixing bracket 501. The fixed parts of the battery pack test assembly include a battery pack fixing frame 51 disposed on the rigid barrier 9.

[0075] Specifically, the fixed bracket 501 of this embodiment can be set with reference to the above-mentioned first impact column 401. It is preferred to use a rigid column with an outer diameter of 254 mm and an inner diameter of 214 mm. The first impact column 401 is welded to the second impact column 500. The second impact column 500 can be welded with channel steel to form a triangular support structure and be equipped with a base, which is used to connect to the mounting base plate 12.

[0076] The battery pack fixing frame 51 of this embodiment includes a main frame 510, a fixing table 511 and a blocking plate 512 provided on the main frame 510, and a plurality of mounting blocks 513 provided on the fixing table 511. A plurality of fixing holes 514 are arranged at intervals on the fixing table 511, and each fixing hole 514 can be arranged in a matrix of 50*50 mm, and the mounting blocks 513 are fixed to the required positions by bolts. Each mounting block 513 is fixed to the fixing table 511 in an adjustable position through the fixing hole 514 to form a fastening of the battery pack 903; the blocking plate 512 is located on the side of the battery pack 903 close to the rigid barrier 9, and abuts against the battery pack 903, which can form a barrier to the battery pack 903. At the same time, a back plate is also provided on the side of the main frame 510 close to the rigid barrier 9 for fixing the rigid barrier 9. In order to make the fixing bracket 501 collide smoothly with the shell of the battery pack 903, the fixing table 511 has an avoidance notch 515, and the fixing bracket 501 can smoothly collide with the shell of the battery pack 903 through the avoidance notch 515 to verify the safety of the battery pack 903. The battery pack test assembly can be used to perform an impact test on the battery pack 903.

[0077] like Figure 8 , Fig. 9 and Fig.10As shown, the test assembly of this embodiment also includes a front-end frame test assembly 6 adapted to the front-end frame of the vehicle body. The impact module of the front-end frame test assembly 6 includes two types, namely, a longitudinal beam impact block 60 and an anti-collision beam impact column 62, which are respectively used for collision tests of the anti-collision beam 904 and the longitudinal beam 907. The fixed parts of the front-end frame test assembly 6 include a plurality of second mounting seats 61, which are used to fix the anti-collision beam 904 or the entire front-end frame of the vehicle body. It should be pointed out that the second mounting seat 61 can be designed separately, or replaced by the collision force detection device 20; when there are two longitudinal beams 907 in the front-end frame of the vehicle body, or two energy absorption boxes are arranged on the rear side of the anti-collision beam 904, two second mounting seats 61 can be provided, which are respectively used to connect the rear ends of the two longitudinal beams 907, or the two energy absorption boxes on the rear side of the anti-collision beam 904.

[0078] When the front frame of the vehicle body only includes the anti-collision beam 904, the anti-collision beam 904 is fixed to the rigid barrier 9 through two second mounting seats 61, and the anti-collision beam impact column 62 is fixedly installed on the mounting substrate 12 so that the anti-collision beam impact column 62 can form an impact on the middle position of the anti-collision beam 904; it should be pointed out that the anti-collision beam impact column 62 here can adopt the same structure as the above-mentioned battery pack impact module 50.

[0079] When the front frame of the vehicle body includes a longitudinal beam 907 and an anti-collision beam 904 arranged at the front end of the longitudinal beam 907, the rear end of the longitudinal beam 907 is fixed to the mounting base 12 through the second mounting seat 61 or the collision force detection device 20. When there are two parallel longitudinal beams 907 in the front frame of the vehicle body, a longitudinal beam support frame 908 can be arranged between the two longitudinal beams 907 to replace the support component between the vehicle support and the two longitudinal beams 907. The longitudinal beam impact block 60 is fixed on the rigid barrier 9. The size of the longitudinal beam impact block 60 can be set to be consistent with the spacing between the two longitudinal beams 907, and can form a complete impact on the portion of the anti-collision beam 904 located between the two longitudinal beams 907, that is, the longitudinal beam impact block 60 can form an impact on the entire anti-collision beam 904, so as to transfer the impact force to the longitudinal beam 907. Through the above-mentioned front frame test assembly 6 of the vehicle body, the impact test of the anti-collision beam 904 and the longitudinal beam 907 can be completed.

[0080] like Figures 11 to 17 As shown, the test component of this embodiment also includes a surface impact test component adapted to the A-pillar 901, the door sill beam 905, and the front enclosure 906. The impact module of the surface impact test component includes an impact panel disposed on the mounting substrate 12. The fixing parts of the surface impact test component include a fixing frame disposed on the rigid barrier 9. The A-pillar 901, the door sill beam 905, and the front enclosure 906 can be respectively fixed on the fixing frames to withstand the impact of the impact panel.

[0081] Specifically, if Fig.11 and Fig.12As shown, the surface impact test assembly for testing the A-pillar 901 is the A-pillar test assembly 3. The impact panel of the A-pillar test assembly 3 is a rectangular A-pillar impact panel 30 with a width of 1000 mm and a height of 700 mm. The A-pillar impact panel 30 can be installed on the mounting base plate 12 through two collision force detection devices 20. The fixed part of the A-pillar test assembly 3 is an A-pillar fixing frame 31 arranged on the rigid barrier 9. The A-pillar fixing frame 31 specifically includes an upper fixing seat 310 and a lower fixing seat 311 spaced apart from each other, and a lower support frame 312 extending in a direction away from the rigid barrier 9 is provided on the lower fixing seat 311; the top end of the A-pillar 901 is fixed on the upper fixing seat 310, and the bottom end of the A-pillar 901 is fixed on the lower support frame 312. During a collision, the A-pillar impact panel 30 hits the front end of the A-pillar 901.

[0082] like Fig.13 and Fig.14 As shown, the surface impact test assembly for testing the threshold beam 905 is a threshold beam test assembly 7, and the impact panel of the threshold beam test assembly 7 is a threshold beam impact panel 701 adapted to the threshold beam 905. The threshold beam impact panel 701 is mounted on the mounting base plate 12 through a third mounting seat 700. The third mounting seat 700 and the threshold beam impact panel 701 together constitute a threshold beam impact module 70. The threshold beam 905 is fixed to the rigid barrier 9 through a threshold beam fixing frame 71; the threshold beam fixing frame 71 includes a base 710 for fixing the rigid barrier 9, and a fixing groove 711 for connecting the rear end of the threshold beam 905. At the same time, a support beam 712 is provided above the fixing groove 711 to form a support for the frame above the front end of the threshold beam 905. A first flange 7010 is formed on the top of the threshold beam impact panel 701 and is bent toward the side of the mounting substrate 12; viewed from the side of the threshold beam impact panel 701 that bears the impact, the flange is like an arc-shaped chamfered structure, which can appropriately avoid the frame above the front end of the threshold beam 905, thereby helping to better apply the impact force to the threshold beam 905.

[0083] like Fig.15 , Fig.16 and Fig.17As shown, the surface impact test assembly for the test of the front wall 906 is the front wall test assembly 8. The front wall impact module 80 of the front wall test assembly 8 includes a fixed frame 800 and a front wall impact panel 801 arranged on the fixed frame 800. The fixed frame 800 and the front wall impact panel 801 together constitute the front wall impact module 80; the front wall impact panel 801 is adapted to the front wall 906. The fixed part of the front wall test assembly 8 is a front wall fixing frame 81 arranged on the rigid barrier 9. In this embodiment, the fixed frame 800 includes a connecting base plate 8001 for connecting the mounting base plate 12, a plurality of supporting longitudinal beams 8002 supporting the front wall impact panel 801 and the connecting base plate 8001, and a supporting inclined beam 8003 inclined upward from the top of the connecting base plate 8001. Since the height dimension of the front wall impact panel 801 is relatively large, in order to realize the full collision of the front wall 906, the supporting inclined beam 8003 can form a good support for the top of the front wall impact panel 801.

[0084] In addition, the side of the front impact panel 801 of this embodiment is formed with a second flange 8010 that is bent toward the side of the mounting substrate 12; from the side of the front impact panel 801 that bears the impact, the flange is like a chamfered structure in the shape of an arc. This design can reduce the area that cannot be hit by the impact by reducing the collision width of the front impact panel 801, so as to better impact the key safety parts of the front 906. For the specific setting dimensions of the front impact panel 801 and the location of the second flange 8010, refer to Fig.17 As shown, it mainly includes the thickness T of the front impact panel 801, the arc radius R of the second flange 8010, the distance D between the edge of the second flange 8010 and the supporting beam body, and the arc angle α of the second flange 8010; these structural dimensions can be flexibly set within a reasonable range. Among them, the thickness T can be set between 30mm and 50mm, for example, it can be set to 38mm; the arc radius R can be set between 120mm and 180mm, for example, it can be set to 150mm; the distance D can be set between 350mm and 500mm, for example, it can be set to 430mm; the arc angle α can be set between 80° and 120°, for example, it can be set to 115°.

[0085] By means of the above-mentioned A-pillar test assembly 3 , the door sill beam test assembly 7 and the front panel test assembly 8 , impact tests on the A-pillar 901 , the door sill beam 905 and the front panel 906 can be carried out respectively.

[0086] To sum up, the collision test system of this embodiment, by adapting multiple test components to multiple vehicle components related to vehicle safety, can complete the collision test tasks of various vehicle components using a trolley 1, thereby compensating for the problem of insufficient accuracy of simulation analysis and verification of vehicle components, and further reducing the number of vehicle collision tests during the development of vehicle safety performance, which helps to reduce vehicle R&D costs.

[0087] Embodiment 2

[0088] This embodiment relates to a vehicle development method, the method comprising:

[0089] During the design verification phase of the vehicle, a collision test is performed on vehicle components using the collision test system provided in the first embodiment;

[0090] The safety design content of the vehicle component is modified according to the test results of the collision test.

[0091] In the prior art, due to the lack of simulation accuracy, the overall development of vehicle safety performance has to adopt more than two rounds of collision tests, and each collision requires a prototype vehicle, resulting in high R&D costs. The vehicle development method of the present invention, by adopting the collision test system of the present invention, tests the components and subsystems mainly involved in vehicle safety separately, and can cancel the collision test vehicle in the ET stage. By pre-establishing material card development and identifying the impact test conditions of key components, a series of tests are carried out in the ET stage, including vehicle components and subsystems involved in safety, and then the secondary vehicle collision, so as to be equivalent to the vehicle collision test conditions in the ET stage; finally, only one round of collision is carried out in the PT stage for verification, and the goal of vehicle safety performance development can be achieved.

[0092] During the development process, by identifying the core components and subsystems of the vehicle model, creating test equipment for components and subsystems, breaking the whole vehicle collision into parts, using a trolley 1 in the collision test system as a carrier, designing a variety of test components for the collision of each vehicle component, and using a trolley 1 to complete a variety of tests, and retaining the ability to expand other tests later. Trolley 1 is combined with different test components to carry out component testing before the design digital model is frozen, which can identify the failure risk of components in advance and improve the simulation accuracy of the component level; promote the improvement of the accuracy of the subsystem simulation analysis model, carry out component and subsystem tests, and sub-vehicle tests in the ET stage, identify the failure risk of subsystems, improve the simulation accuracy of the subsystem level, and finally feed back to the improvement of the accuracy of the whole vehicle simulation model. The problems exposed in the ET stage can be finally verified in the PT stage to ensure the safety of the designed vehicle.

[0093] refer to Fig.18 As shown, the vehicle development method of the present invention replaces the vehicle-level test with component-level, subsystem-level and sub-vehicle-level tests, wherein the component-level test is carried out before the counting model is frozen, which can expose risks in advance, pre-risk and improve the model simulation accuracy. System and sub-vehicle tests are carried out during ET to further improve the accuracy of the vehicle model, and ultimately ensure that the vehicle simulation is verified to meet the standards in one go.

[0094] On the whole, the vehicle development method of the present invention applies a new safety performance development method based on components and their subsystems to replace the traditional multi-round vehicle collision test, which reduces the number of test vehicles, reduces R&D costs, and improves the quality of vehicle safety R&D.

[0095] The above description is only a preferred embodiment of the present invention. The detailed explanation of the configuration, the examples of the specific structural setting forms, or the description of the assembly connection mode, etc., are all for the purpose of sufficient disclosure so that those skilled in the art can better implement the present invention, but are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A collision test system for collision testing of various vehicle components, characterized in that: The collision test system comprises a plurality of test components respectively adapted to the vehicle components, a trolley (1) capable of moving on a set travel path, and a rigid barrier (9) arranged at the end of the travel path; The front end of the trolley (1) is provided with a mounting base (12), and the test assembly comprises a fixing part for fixing the vehicle component and an impact module for impacting the vehicle component, and the impact module and the fixing part are interchangeably arranged on the mounting base (12) and the rigid barrier (9), respectively.

2. The collision test system according to claim 1, characterized in that: The setting position of the impact module and / or the fixing part on the mounting substrate (12) is adjustable.

3. The collision test system according to claim 2, characterized in that: It also includes a collision force detection device (20) arranged on the mounting substrate (12); The collision force detection device (20) comprises a sensor (201), and a base (200) and a mounting plate (202) respectively arranged at two ends of the sensor (201); The base (200) is fixedly mounted on the mounting substrate (12) in an adjustable manner, and the mounting plate (202) is used to connect the impact module or the fixing part.

4. The collision test system according to claim 1, characterized in that: It also includes a damping device (21) arranged on the rigid barrier (9); The damping device (21) is used to receive impact from the mounting substrate (12), and the damping device (21) comprises a fixing seat (210) fixedly connected to the rigid barrier (9), and a damping tube (211) extending from the fixing seat (210) in a direction away from the rigid barrier (9).

5. The collision test system according to any one of claims 1 to 4, characterized in that: The test assembly comprises a B-pillar test assembly (4) adapted to the B-pillar (902), the impact module of the B-pillar test assembly (4) comprising a first mounting seat (400) arranged on the mounting substrate (12), and a first impact column (401) arranged on the first mounting seat (400); The fixing part of the B-pillar test assembly (4) comprises a B-pillar fixing frame (41) arranged on the rigid barrier (9).

6. The collision test system according to any one of claims 1 to 4, characterized in that: The test assembly comprises a battery pack test assembly adapted to the battery pack (903), the impact module of the battery pack test assembly comprising a fixing bracket (501) arranged on the mounting substrate (12), and a second impact column (500) arranged on the fixing bracket (501); The fixing part of the battery pack test assembly comprises a battery pack fixing frame (51) arranged on the rigid barrier (9), and the battery pack (903) is fixed on the battery pack fixing frame (51).

7. The collision test system according to claim 6, characterized in that: The battery pack fixing frame (51) comprises a main frame (510), and a fixing table (511) and a blocking plate (512) arranged on the main frame (510); the battery pack (903) is fixed on the fixing table (511), and the blocking plate (512) is located on a side of the battery pack (903) close to the rigid barrier (9) and abuts against the battery pack (903).

8. The collision test system according to claim 7, characterized in that: The battery pack (903) is fastened to the fixed table top (511) via a plurality of mounting blocks (513), and the fastening position of each mounting block (513) on the fixed table top (511) is adjustable.

9. The collision test system according to any one of claims 1 to 4, characterized in that: The test assembly comprises a vehicle front end frame test assembly (6) adapted to the vehicle front end frame, the impact module of the vehicle front end frame test assembly (6) comprises an anti-collision beam impact column (62) fixedly mounted on the mounting base plate (12), and the fixing part of the vehicle front end frame test assembly (6) comprises a second mounting seat (61); The front end frame of the vehicle body comprises an anti-collision beam (904), and the anti-collision beam (904) is fixed to the rigid barrier (9) via the second mounting seat (61).

10. The collision test system according to any one of claims 1 to 4, characterized in that: The test assembly comprises a vehicle front frame test assembly (6) adapted to the vehicle front frame, the impact module of the vehicle front frame test assembly (6) comprises a longitudinal beam impact block (60) fixedly mounted on the rigid barrier (9), and the fixing part of the vehicle front frame test assembly (6) comprises a plurality of second mounting seats (61); The front end frame of the vehicle body comprises a longitudinal beam (907) and an anti-collision beam (904) arranged at the front end of the longitudinal beam (907); the rear end of the longitudinal beam (907) is fixed to the mounting base (12) via the second mounting seat (61).

11. The collision test system according to any one of claims 1 to 4, characterized in that: The test assembly comprises a surface impact test assembly adapted to the A-pillar (901), the door sill beam (905), and the front enclosure (906); the impact module of the surface impact test assembly comprises an impact panel arranged on the mounting substrate (12); and the fixing part of the surface impact test assembly comprises a fixing frame arranged on the rigid barrier (9); The A-pillar (901), the door sill beam (905) and the front enclosure (906) can be respectively fixed on the fixing frame to bear the impact of the impact panel.

12. The collision test system according to claim 11, characterized in that: The impact panel comprises a sill beam impact panel (701) adapted to the sill beam (905), and a front wall impact panel (801) adapted to the front wall (906); The top of the sill beam impact panel (701) is formed with a first flange (7010) bent toward the side of the mounting substrate (12), and / or the side of the front impact panel (801) is formed with a second flange (8010) bent toward the side of the mounting substrate (12).

13. A vehicle development method, characterized in that: The method includes: During the design verification stage of the vehicle, a collision test is performed on the vehicle components by using the collision test system described in any one of claims 1 to 12; The safety design content of the vehicle component is modified according to the test results of the collision test.

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