New energy automobile battery pack collision test device

Abstract

The invention relates to the technical field of new energy automobile battery pack detection, in particular to a new energy automobile battery pack collision test device which comprises a transverse moving mechanism arranged on the upper side of a bottom plate, a lifting mechanism arranged on the outer side of the transverse moving mechanism, and a holding mechanism arranged on the lifting mechanism. According to the invention, targeted impact can be applied to a single area of the battery pack or composite impact can be synchronously applied to different areas of the battery pack, and extrusion acting force continuously applied to the battery pack by the pile body under the influence of self weight of a vehicle can be simulated in collision impact; according to the invention, the battery pack can be synchronously driven to transversely move in the process that the battery pack is vertically impacted, so that the composite stress state of the battery pack under the influence of vehicle inertia during actual collision can be simulated; the device can accurately simulate the vertical extrusion force applied to the battery pack by the pile body under the self-weight effect of a vehicle, and drives the battery pack to move transversely to test the influence of transverse extrusion friction on the overall structural stability of the battery pack in a non-impact or weak-impact state.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle battery pack detection, and specifically provides a new energy vehicle battery pack collision test device. Background Art

[0002] The battery pack of a new energy vehicle is the core energy storage unit of an electric vehicle, usually composed of multiple battery modules, a battery management system, a cooling system, and a housing. The safety of the battery pack is directly related to the vehicle's endurance, stability, and the safety of passengers. Therefore, it is necessary to verify its impact resistance and other performances through collision tests.

[0003] In the prior art, since the test method of directly driving the chassis battery pack of a running vehicle to collide with a pile body has high risks and cost pressures, pre-simulation tests need to be carried out before actual vehicle tests. Usually, the battery pack is first fixed on a test bench or a vehicle simulation rack, and then a special impact device is used to sequentially apply impacts to key areas such as the center, four corners, and edges of the bottom of the battery pack from bottom to top. Thus, through a multi-directional simulated collision design, the structural impact resistance and safety threshold of the battery pack can be comprehensively evaluated, providing a theoretical basis and risk prediction for subsequent actual vehicle tests.

[0004] However, the traditional method of pre-simulating collision tests on battery packs has the following problems: 1. In the existing simulated collision tests, although the structural impact resistance and other performances of the battery pack can be evaluated through directional impacts, its test logic mainly relies on the energy impact formed by instantaneous impacts and fails to truly reproduce the continuous extrusion state of the battery pack and the pile body under the action of the vehicle's own weight during the collision; 2. In the existing simulated collision tests, usually single-point instantaneous impacts are sequentially applied to the battery pack. During the actual vehicle collision process, the battery pack generally receives synchronous impacts at multiple discrete points at the same time, which causes the compound superposition of stresses in each area, thereby exacerbating the overall deformation degree of the battery pack; 3. During the actual vehicle collision process, the inertia of the vehicle itself will cause the battery pack and the pile body to form continuous extrusion and relative displacement, resulting in large-area friction damage and dynamic shear damage on the surface of the battery pack. In the existing simulated collision tests, the battery pack is usually fixed and cannot move, so it cannot fully reflect the comprehensive performance of the battery pack under the compound action state during actual collisions, resulting in the test data only being used as a theoretical reference, further covering up potential structural damage or functional abnormality risks of the battery pack during the production and detection process, and affecting the risk control during the actual vehicle test process. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: a new energy vehicle battery pack collision test device, including a bottom plate, a transverse movement mechanism is arranged on the upper side of the bottom plate, a lifting mechanism is arranged outside the transverse movement mechanism, and a clamping mechanism is arranged on the lifting mechanism.

[0006] The transverse movement mechanism includes a first guide rail symmetrically fixed on the upper side of the bottom plate before and after through a backing plate. A second guide rail is fixedly arranged on the upper side of the bottom plate and between the backing plates. An installation and positioning part for fixing the battery pack is arranged on the first guide rail. A transverse movement part slidably matched with the corresponding first guide rail is arranged on the lower side of the installation and positioning part. A traction docking part is arranged on the installation and positioning part. A transverse traction part for driving the installation and positioning part to move horizontally in cooperation with the traction docking part is arranged on the second guide rail.

[0007] The lifting mechanism includes lifting driving parts symmetrically arranged on the upper side of the bottom plate before and after. Guide columns are symmetrically and fixedly arranged on the upper side of the bottom plate and between the lifting driving parts before and after. A driven lifting part that cooperates with the lifting driving parts to lift and lower is jointly arranged on the symmetrically arranged guide columns before and after. An impact adjustment part for performing impact tests on different areas of the battery pack is arranged on the driven lifting part.

[0008] The clamping mechanism includes a clamping driving part arranged on the driven lifting part and a driven clamping part that cooperates with the clamping driving part to lock and position the driven lifting part on the guide column.

[0009] Preferably, the installation and positioning part includes an installation table that moves left and right along the first guide rail. A first buffer pad is fixedly arranged on the lower surface inside the installation table. Cylinders one are symmetrically and fixedly arranged on the installation table before and after. A connecting plate one that moves back and forth is fixedly arranged at the telescopic end of the cylinder one. Slide rods slidably connected to the corresponding side walls of the installation table are symmetrically and fixedly arranged on the side of the connecting plate one close to the corresponding cylinder one left and right. Positioning clamping plates are symmetrically and fixedly arranged on the side of the connecting plate one far from the corresponding cylinder one up and down. A first damping pad is fixedly arranged on the side of the positioning clamping plate far from the corresponding connecting plate one.

[0010] Preferably, the transverse movement part includes fixing plates one fixedly arranged at the four corners of the lower surface of the installation table. The fixing plates one are located inside the corresponding first guide rails. Two groups of ball bearings are symmetrically and rotatably arranged on the fixing plates one before and after. Each group consists of a plurality of ball bearings evenly distributed left and right. A plurality of moving wheels are evenly and rotatably arranged left and right through a support one on the lower side of the fixing plate one.

[0011] Preferably, the traction docking part includes fixing plates two symmetrically and fixedly arranged on the installation table before and after. Docking seats are symmetrically and fixedly arranged on the side of the fixing plates two far from the installation table before and after. A docking groove extending up and down is opened on the side of the docking seat far from the corresponding fixing plate two.

[0012] Preferably, the transverse traction part includes electric sliders slidably arranged on the second guide rail symmetrically left and right. A U-shaped table that moves left and right along the second guide rail is fixedly arranged on the upper sides of the symmetrically arranged electric sliders left and right. Traction shafts slidably connected to the corresponding docking grooves are symmetrically and fixedly arranged on the opposite sides of the vertical sections of the U-shaped table left and right before and after. The middle section of the traction shaft is located inside the corresponding docking groove.

[0013] Preferably, the lifting drive part includes a second cylinder fixedly arranged on the upper side of the bottom plate. A connecting platform that moves up and down is fixedly arranged at the telescopic end of the second cylinder. Blocks are fixedly arranged at the lower sides of the opposite ends of the connecting platform symmetrically in the front and back through connecting rods.

[0014] Preferably, the driven lifting part includes an impact platform that moves up and down and is slidably arranged on the symmetrically arranged front and back guide columns. L-shaped driven plates are symmetrically and fixedly arranged on the front and back sides of the impact platform. Notches for the corresponding connecting rods to pass through up and down are formed on the sides of the horizontal sections of the L-shaped driven plates away from the corresponding vertical sections.

[0015] Preferably, the impact adjusting part includes multiple groups of receiving sleeves fixedly arranged evenly from left to right on the lower side of the impact platform. Each group consists of multiple receiving sleeves distributed evenly in the front and back. A receiving groove that penetrates up and down is formed on the impact platform and the receiving sleeves. Multiple rectangular grooves corresponding to the corresponding receiving grooves are evenly formed on the upper surface of the impact platform. Impact piles with their lower ends extending out are slidably arranged in the receiving sleeves. Return-shaped frames that are slidably inserted into the corresponding rectangular grooves are fixedly arranged on the upper sides of the impact piles. Slots that penetrate from left to right are formed on the return-shaped frames. Handles are symmetrically and fixedly arranged on the upper sides of the return-shaped frames in the front and back. An installation plate that is slidably inserted into the corresponding slot is arranged on the upper side of the return-shaped frame and between the corresponding handles. The installation plate is installed on the upper side of the impact platform through bolts. Buffer pads two are symmetrically and fixedly arranged on the upper and lower sides of the installation plate.

[0016] Preferably, the clamping drive part includes third cylinders symmetrically and fixedly arranged on the upper side of the impact platform through second supports. A connecting plate two that moves back and forth is fixedly arranged at the telescopic end of the third cylinder. U-shaped drive plates with their openings facing the corresponding guide columns are symmetrically and fixedly arranged on the left and right sides of the connecting plate two. Oblique linear grooves that penetrate up and down are formed on the symmetrically arranged upper and lower horizontal sections of the U-shaped drive plates.

[0017] Preferably, the driven clamping part includes two groups of guide rods symmetrically arranged on the front and back sides of the guide columns. Each group consists of guide rods symmetrically arranged up and down. The two groups of guide rods symmetrically arranged in the front and back are fixedly arranged on the upper side of the impact platform through supports three symmetrically arranged from left to right. U-shaped clamping blocks located inside the corresponding U-shaped drive plates are symmetrically and slidably arranged on the two groups of guide rods symmetrically arranged in the front and back. Damping pads two are fixedly arranged on the opposite sides of the U-shaped clamping blocks symmetrically arranged from left to right. Slide shafts that are slidably matched with the corresponding oblique linear grooves are symmetrically and fixedly arranged on the upper and lower sides of the U-shaped clamping blocks.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the lifting mechanism of the present invention, it is possible to apply targeted impacts to a single area of the battery pack or synchronous composite impacts to different areas, and it is possible to simulate the extrusion force continuously exerted by the pile body on the battery pack under the influence of the vehicle's own weight during a collision impact. Therefore, not only can the independent impact resistance performance of each area of the battery pack be tested targetedly, but also the actual comprehensive structural performance of the battery pack under the action of multi-point composite impacts can be tested, ensuring that the simulated test state of the battery pack is more in line with the actual collision situation, exposing structural defects that are difficult to capture under single-point impacts of the battery pack, and thus improving the accuracy and reliability of the simulated collision test results.

[0019] 2. Through the cooperation of the transverse movement mechanism and the lifting mechanism of the present invention, it is possible to synchronously drive the battery pack to move horizontally during the process of the battery pack being vertically impacted, so as to simulate the composite stress state of the battery pack under the influence of vehicle inertia during an actual collision, thereby reproducing the composite failure state of the battery pack caused by continuous extrusion, friction slip, and dynamic shear during an actual collision. Furthermore, the simulated test conditions of the battery pack are closer to the energy transfer and stress distribution characteristics of a real collision, which can not only expose structural defects that are difficult to find in static tests of the battery pack, but also evaluate the stability and reliability attenuation trend of the battery pack during dynamic deformation, providing more comprehensive data support for the overall safety performance optimization of the battery pack and the risk control of vehicle tests.

[0020] 3. Through the cooperation of the transverse movement mechanism, the lifting mechanism, and the clamping mechanism of the present invention, it is possible to accurately simulate the vertical extrusion force exerted by the pile body on the battery pack under the action of the vehicle's own weight, and by driving the battery pack to move horizontally, to test the influence of horizontal extrusion friction on the overall structural stability of the battery pack in a state of no impact or weak impact. Therefore, it is possible to further evaluate and test the potential structural defects of the battery pack based on the test data under the actual collision mode, and thus ensure the comprehensiveness and accuracy of the data obtained from the comprehensive structural performance test of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention.

[0022] Figure 2 is a partial cross-sectional schematic diagram of a part of the transverse movement mechanism.

[0023] Figure 3 is Figure 2 an enlarged schematic diagram at position A in

[0024] Figure 4 is a partial cross-sectional schematic diagram of a part of the transverse traction part.

[0025] Figure 5 is a partial cross-sectional schematic diagram of a part of the lifting mechanism.

[0026] Figure 6 It is a partial sectional view of the partial structure of the clamping mechanism.

[0027] Figure 7 It is a partial sectional view of the partial structure of the driven clamping part.

[0028] In the figure: 1. Base plate; 2. Transverse movement mechanism; 21. Guide rail 1; 22. Guide rail 2; 23. Installation and positioning part; 231. Installation table; 232. Cylinder 1; 233. Positioning clamping plate; 24. Transverse movement part; 241. Fixed plate 1; 242. Moving wheel; 25. Traction docking part; 251. Fixed plate 2; 252. Docking seat; 253. Docking groove; 26. Transverse traction part; 261. Electric slider; 262. U-shaped table; 263. Traction shaft; 3. Lifting mechanism; 31. Lifting drive part; 311. Cylinder 2; 312. Connection table; 313. Support block; 32. Guide post; 33. Driven lifting part; 331. Impact table; 332. L-shaped driven plate; 34. Impact adjustment part; 341. Receiving sleeve; 342. Impact pile; 343. Return-shaped frame; 344. Installation plate; 4. Clamping mechanism; 41. Clamping drive part; 411. Cylinder 3; 412. U-shaped drive plate; 413. Oblique linear groove; 42. Driven clamping part; 421. Guide rod; 422. U-shaped clamping block; 423. Sliding shaft. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1 , a collision test device for a new energy vehicle battery pack, including a base plate 1, a transverse movement mechanism 2 is arranged on the upper side of the base plate 1, a lifting mechanism 3 is arranged outside the transverse movement mechanism 2, and a clamping mechanism 4 is arranged on the lifting mechanism 3.

[0031] Please refer to Figure 1 and Figure 2 , the transverse movement mechanism 2 includes guide rail 1 21 symmetrically fixed on the upper side of the base plate 1 before and after through a cushion plate, guide rail 2 22 is fixedly arranged on the upper side of the base plate 1 and between the cushion plates, an installation and positioning part 23 for fixedly installing the battery pack is arranged on the guide rail 1 21, a transverse movement part 24 slidingly and guidingly matched with the corresponding guide rail 1 21 is arranged on the lower side of the installation and positioning part 23, a traction docking part 25 is arranged on the installation and positioning part 23, and a transverse traction part 26 for driving the installation and positioning part 23 to move horizontally in cooperation with the traction docking part 25 is arranged on the guide rail 2 22.

[0032] Please refer to Figure 1 and Figure 2 As shown in Figure 1 and Figure 2 , the installation and positioning part 23 includes an installation table 231 that moves left and right along the first guide rail 21. A first buffer pad is fixedly arranged on the lower surface inside the installation table 231, and the first buffer pad is used to buffer the impact force between the battery pack and the installation table 231. First cylinders 232 are fixedly arranged symmetrically in the front and back on the installation table 231. A connecting plate one that moves back and forth is fixedly arranged at the telescopic end of the first cylinder 232. Slide rods that are slidably connected to the corresponding side walls of the installation table 231 are fixedly arranged symmetrically on the left and right on the side of the connecting plate one close to the corresponding first cylinder 232. Positioning clamping plates 233 are fixedly arranged symmetrically in the up and down on the side of the connecting plate one far from the corresponding first cylinder 232. A first damping pad is fixedly arranged on the side of the positioning clamping plate 233 far from the corresponding connecting plate one.

[0033] Place the bottom of the battery pack facing up and align it into the installation table 231. Then, drive the corresponding connecting plate one and positioning clamping plate 233 to move towards the battery pack through the first cylinder 232 until the symmetrically arranged positioning clamping plates 233 on the left and right firmly clamp and fix the battery pack. The first damping pad can not only ensure the stability of the clamping and positioning of the battery pack, but also prevent the positioning clamping plate 233 from wearing the side wall of its outer shell when the battery pack is impacted.

[0034] Please refer to Figure 2 and Figure 4 As shown in Figure 2 and Figure 4 , the lateral movement part 24 includes first fixing plates 241 fixedly arranged at the four corners of the lower surface of the installation table 231. The first fixing plates 241 are located inside the corresponding first guide rails 21. Two groups of ball bearings are symmetrically arranged in the front and back on the first fixing plates 241, and each group consists of a plurality of ball bearings evenly distributed on the left and right. A plurality of moving wheels 242 are evenly rotatably arranged on the lower side of the first fixing plates 241 through first supports.

[0035] When the installation table 231 and the first fixing plates 241 move left and right along the first guide rail 21, the ball bearings on the first fixing plates 241 can greatly reduce the frictional resistance with the inner side wall of the corresponding first guide rail 21, and the moving wheels 242 on the lower side of the first fixing plates 241 can greatly reduce the frictional resistance with the inner lower surface of the corresponding first guide rail 21, so as to ensure that the first guide rail 21 can stably guide the installation table 231 and the first fixing plates 241.

[0036] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown in Figure 1 , Figure 2 and Figure 3 , the traction and docking part 25 includes second fixing plates 251 fixedly arranged symmetrically in the front and back on the installation table 231. Docking seats 252 are fixedly arranged symmetrically on the side of the second fixing plates 251 far from the installation table 231. Docking grooves 253 extending up and down are opened on the side of the docking seats 252 far from the corresponding second fixing plates 251.

[0037] Please refer to Figure 2 、Figure 3 and Figure 4 The lateral traction part 26 includes electric sliders 261 symmetrically arranged left and right and sliding on the second guide rail 22. A U-shaped table 262 moving left and right along the second guide rail 22 is fixedly arranged on the upper sides of the symmetrically arranged electric sliders 261 left and right. Traction shafts 263 slidably connected to the corresponding docking grooves 253 are fixedly arranged symmetrically before and after on the opposite sides of the symmetrically arranged vertical sections of the U-shaped table 262 left and right. The middle sections of the traction shafts 263 are located inside the corresponding docking grooves 253.

[0038] The electric slider 261 drives the U-shaped table 262 and the traction shaft 263 to move left and right along the second guide rail 22. The traction shaft 263 then drives the corresponding fixing plate two 251 and the mounting table 231 to move left and right synchronously through the corresponding docking seat 252. When the battery pack fixed inside the mounting table 231 is vertically impacted, the traction shaft 263 relatively moves slightly up and down along the corresponding docking groove 253, so as to avoid the vertical impact force of the impact directly contacting the traction shaft 263, so that the traction shaft 263 can always stably drive the mounting table 231 to move left and right.

[0039] Please refer to Figure 1 , the lifting mechanism 3 includes a lifting driving part 31 symmetrically arranged before and after on the upper side of the bottom plate 1. Guide columns 32 are symmetrically fixedly arranged before and after on the upper side of the bottom plate 1 and between the lifting driving parts 31. A driven lifting part 33 that cooperates with the lifting driving part 31 to lift is arranged on the symmetrically arranged guide columns 32 before and after. An impact adjusting part 34 for performing impact tests on different areas of the battery pack is arranged on the driven lifting part 33.

[0040] Please refer to Figure 1 and Figure 5 , the lifting driving part 31 includes a second cylinder 311 fixedly arranged on the upper side of the bottom plate 1. A connecting table 312 that moves up and down is fixedly arranged at the telescopic end of the second cylinder 311. Supporting blocks 313 are fixedly arranged at the lower sides of the opposite ends of the symmetrically arranged connecting tables 312 before and after through connecting rods.

[0041] Please refer to Figure 1 and Figure 5 , the driven lifting part 33 includes an impact table 331 that moves up and down and is slidably arranged on the symmetrically arranged guide columns 32 before and after. L-shaped driven plates 332 are symmetrically fixedly arranged on the front and rear sides of the impact table 331. Notches for the corresponding connecting rods to move up and down through are formed on the sides of the horizontal sections of the L-shaped driven plates 332 far from the corresponding vertical sections.

[0042] The cylinder two 311 drives the connecting platform 312 to move upward. The connecting platform 312 then drives the corresponding supporting block 313 to move upward synchronously through the corresponding connecting rod. The supporting block 313 then fits against the lower surface of the horizontal section of the corresponding L-shaped driven plate 332, and drives the impact platform 331 to move upward along the guide post 32 to the required height through the L-shaped driven plate 332. Then, the impact platform 331 is locked and positioned at the current height by the clamping mechanism 4, and the corresponding supporting block 313 is driven by the cylinder two 311 to move downward until it is below the mounting table 231. At this time, the locking of the impact platform 331 by the clamping mechanism 4 can be released, so that the impact platform 331 freely falls along the guide post 32 from the required height.

[0043] Please refer to Figure 1 、 Figure 5 and Figure 6 As shown in, the impact adjustment part 34 includes multiple sets of receiving sleeves 341 evenly and fixedly arranged on the lower side of the impact platform 331 from left to right. Each set consists of multiple receiving sleeves 341 evenly distributed from front to back. The impact platform 331 and the receiving sleeves 341 are jointly provided with receiving grooves penetrating up and down. The upper surface of the impact platform 331 is evenly provided with multiple rectangular grooves corresponding to and communicating with the corresponding receiving grooves. A striking pile 342 with its lower end protruding is slidably arranged in the receiving sleeve 341. A return frame 343 slidably inserted into the corresponding rectangular groove is fixedly arranged on the upper side of the striking pile 342. A slot penetrating left and right is provided on the return frame 343. Lifting handles are symmetrically and fixedly arranged on the upper side of the return frame 343 from front to back. An installation plate 344 slidably inserted into the corresponding slot is arranged on the upper side of the return frame 343 and between the corresponding lifting handles. The installation plate 344 is installed on the upper side of the impact platform 331 by bolts. Buffer pads two are symmetrically and fixedly arranged on the upper and lower sides of the installation plate 344, and the buffer pads two are used to buffer the impact force between the installation plate 344 and the corresponding return frame 343.

[0044] The corresponding installation plate 344 is removed from the upper side of the impact platform 331 by removing the bolts. Then, the corresponding return frame 343 and the striking pile 342 are lifted upward through the lifting handle until the striking pile 342 is completely received into the receiving sleeve 341. At this time, the installation plate 344 can be just inserted into the slot inside the corresponding return frame 343, and the installation plate 344 is installed on the impact platform 331 by bolts again, so as to stably position the striking pile 342 in the corresponding receiving sleeve 341.

[0045] When adjusting the impact area of the battery pack in the installation platform 231, the impact pile 342 above the area where the battery pack does not need to be impacted is stably retracted into the corresponding storage sleeve 341 through the mounting plate 344, and the impact pile 342 above the area where the battery pack needs to be impacted stably extends downward out of the corresponding storage sleeve 341. Then, the support block 313 drives the impact platform 331 and the extended impact pile 342 to move upward along the guide column 32 to the required height, and the impact platform 331 and the impact pile 342 are freely dropped along the guide column 32 from the required height through the cooperation of the clamping mechanism 4, so that the remaining impact piles 342 stably impact the area where the battery pack needs to be impacted, and at the same time, a squeezing force can be continuously applied to the bottom of the battery pack under the action of the overall self-weight of the impact pile 342 and the impact platform 331.

[0046] The above operation method can achieve targeted impact on a single area of the battery pack or synchronous compound impact on different areas by flexibly adjusting the impact pile 342, and can simulate the squeezing force continuously applied by the impact pile 342 to the battery pack under the influence of the vehicle's self-weight during the collision impact, so as to ensure that the simulated test state of the battery pack is more in line with the actual collision situation and improve the accuracy and reliability of the simulated collision test results.

[0047] When simulating the complex stress state of the battery pack under the influence of vehicle inertia during the actual collision process, if the battery pack moves to the right under the drive of the traction shaft 263, the lower end of the impact pile 342 at a specific position in the right-edge area of the impact platform 331 is positioned under the corresponding storage sleeve 341 through the mounting plate 344, and the impact piles 342 at other positions are stably retracted into the corresponding storage sleeves 341 to simulate the situation of the vehicle colliding with an obstacle during the actual directional driving process. Then, the impact platform 331 drives the extended impact pile 342 to freely drop downward from the required height, and at the same time, the traction shaft 263 drives the battery pack to move to the right synchronously. The extended impact pile 342 impacts the bottom of the battery pack and at the same time moves relative to the battery pack until the moving battery pack is completely separated from the impact pile 342.

[0048] The above operation method can reproduce the complex damage state of the battery pack caused by continuous extrusion, frictional slip and dynamic shear during the actual collision, so that the simulated test conditions of the battery pack are closer to the energy transfer and stress distribution characteristics of the real collision, and provide more comprehensive data support for the overall safety performance optimization of the battery pack and the risk control of the actual vehicle test.

[0049] Please refer to Figure 1 and Figure 5 The clamping mechanism 4 includes a clamping drive part 41 arranged on the driven lifting part 33 and a driven clamping part 42 that cooperates with the clamping drive part 41 to lock and position the driven lifting part 33 at any position on the guide column 32.

[0050] Please refer to Figure 5 、 Figure 6 and Figure 7 , the clamping driving part 41 includes a cylinder three 411 symmetrically and fixedly arranged on the upper side of the impact table 331 before and after through a second support. A connecting plate two moving back and forth is fixedly arranged at the telescopic end of the cylinder three 411. U-shaped driving plates 412 with openings facing the corresponding guide posts 32 are symmetrically and fixedly arranged on the left and right sides of the connecting plate two. Oblique linear slots 413 penetrating up and down are formed on the upper and lower symmetric horizontal sections of the U-shaped driving plate 412.

[0051] Please refer to Figure 5 、 Figure 6 and Figure 7 , the driven clamping part 42 includes two groups of guide rods 421 symmetrically arranged on the front and rear sides of the guide post 32. Each group consists of upper and lower symmetric guide rods 421. The two groups of front and rear symmetric guide rods 421 are fixedly arranged on the upper side of the impact table 331 through left and right symmetric third supports. U-shaped clamping blocks 422 located inside the corresponding U-shaped driving plates 412 are symmetrically and slidably arranged on the two groups of front and rear symmetric guide rods 421. Damping pads two are fixedly arranged on the opposite sides of the left and right symmetric U-shaped clamping blocks 422. Sliding shafts 423 slidably matched with the corresponding oblique linear slots 413 are symmetrically and fixedly arranged on the upper and lower sides of the U-shaped clamping blocks 422.

[0052] The cylinder three 411 drives the connecting plate two to move a specific distance in the direction of the corresponding guide post 32. The connecting plate two drives the corresponding U-shaped driving plate 412 to move synchronously. The U-shaped driving plate 412 drives the oblique linear slot 413 to slidably cooperate with the corresponding sliding shaft 423. The sliding shaft 423 drives the U-shaped clamping block 422 to slide along the guide rod 421 towards the corresponding guide post 32 until the left and right symmetric U-shaped clamping blocks 422 stably clamp and lock the guide post 32, so as to realize stably locking and positioning the impact table 331 at any position on the guide post 32. The damping pad two can improve the clamping stability of the U-shaped clamping block 422.

[0053] The supporting block 313 drives the impact pile 342 protruding at the required position to be stably pressed against the bottom of the battery pack, and the U-shaped clamping block 422 stably locks the impact table 331 at the current position. Then, the traction shaft 263 drives the mounting table 231 and the battery pack to move directionally, so that the battery pack and the impact pile 342 stably move relative to each other in a non-impact state, so as to test the influence of lateral extrusion friction on the overall structural stability of the battery pack in a non-impact or weak-impact state. Thus, the potential structural defects of the battery pack can be further evaluated and inspected based on the test data in the actual collision mode, and further ensure the comprehensiveness and accuracy of the data obtained from the comprehensive structural performance test of the battery pack.

[0054] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle battery pack collision test device, comprising a bottom plate, characterized in that: The upper side of the bottom plate is provided with a transverse movement mechanism, the outer side of the transverse movement mechanism is provided with a lifting mechanism, and the lifting mechanism is provided with a clamping mechanism; The transverse movement mechanism includes a guide rail 1 fixedly arranged on the upper side of the bottom plate through a backing plate, a guide rail 2 fixedly arranged on the upper side of the bottom plate and located between the backing plates, a mounting and positioning portion for fixing the battery pack is arranged on the guide rail 1, a transverse moving portion slidingly matched with the corresponding guide rail 1 is arranged on the lower side of the mounting and positioning portion, a traction docking portion is arranged on the mounting and positioning portion, and a transverse traction portion cooperating with the traction docking portion to drive the mounting and positioning portion to move transversely is arranged on the guide rail 2; The lifting mechanism includes a lifting driving part symmetrically arranged on the upper side of the bottom plate, guide columns symmetrically arranged on the upper side of the bottom plate and between the lifting driving parts, a driven lifting part coordinated with the lifting driving part for lifting and lowering is arranged on the front and back symmetrical guide columns, and an impact adjustment part for performing impact tests on different areas of the battery pack is arranged on the driven lifting part; The clamping mechanism comprises a clamping driving part arranged on the driven lifting part and a driven clamping part cooperating with the clamping driving part to lock and position the driven lifting part on the guide column.

2. A new energy vehicle battery pack collision test device according to claim 1, characterized in that: The installation and positioning part includes a mounting platform which moves left and right along a guide rail, a buffer pad is fixedly arranged on the lower surface of the interior of the mounting platform, a cylinder is fixedly arranged front and back symmetrically on the mounting platform, a connecting plate which moves front and back is fixedly arranged at the telescopic end of the cylinder, a sliding rod which is slidably connected to the corresponding side wall of the mounting platform is fixedly arranged left and right symmetrically on the side of the connecting plate close to the corresponding cylinder, a positioning clamp is fixedly arranged up and down symmetrically on the side of the connecting plate away from the corresponding cylinder, and a damping pad is fixedly arranged on the side of the positioning clamp away from the corresponding connecting plate.

3. A new energy vehicle battery pack collision test device according to claim 2, characterized in that: The lateral moving part includes a fixed plate 1 fixedly arranged at the four corners of the lower surface of the mounting platform, the fixed plate 1 is located in the corresponding guide rail 1, two groups of balls are symmetrically rolled on the fixed plate 1, each group is composed of a plurality of balls evenly distributed left and right, and a plurality of moving wheels are arranged on the lower side of the fixed plate 1 for evenly rotating left and right through a support 1.

4. A new energy vehicle battery pack collision test device according to claim 2, characterized in that: The traction docking part includes a second fixing plate symmetrically fixed on the mounting platform, a docking seat is symmetrically fixed on the side of the second fixing plate away from the mounting platform, and a docking groove extending up and down is opened on the side of the docking seat away from the corresponding second fixing plate.

5. A new energy vehicle battery pack collision test device according to claim 4, characterized in that: The lateral traction part includes an electric slider symmetrically slidably arranged on the guide rail 2, and a U-shaped platform that moves left and right along the guide rail 2 is fixedly arranged on the upper side of the left and right symmetrical electric sliders. Traction shafts that are slidably connected to the corresponding docking grooves are fixedly arranged front and back symmetrically on opposite sides of the left and right symmetrical vertical sections of the U-shaped platform, and the traction shafts are located in the middle section inside the corresponding docking groove.

6. A new energy vehicle battery pack collision test device according to claim 1, characterized in that: The lifting drive unit includes a second cylinder fixedly arranged on the upper side of the bottom plate, a connecting platform that moves up and down is fixedly arranged on the telescopic end of the second cylinder, and a supporting block is fixedly arranged on the lower side of the opposite end of the front and rear symmetrical connecting platforms through a connecting rod.

7. A new energy vehicle battery pack collision test device according to claim 1, characterized in that: The driven lifting part includes an impact platform that is slidably arranged on front and rear symmetrical guide columns and moves up and down. L-shaped driven plates are symmetrically fixed on the front and rear sides of the impact platform. A notch is opened on the side of the horizontal section of the L-shaped driven plate away from the corresponding vertical section for the corresponding connecting rod to move up and down.

8. A new energy vehicle battery pack collision test device according to claim 7, characterized in that: The impact adjustment part includes a plurality of groups of storage sleeves evenly fixed on the left and right sides of the lower side of the impact platform, each group is composed of a plurality of storage sleeves evenly distributed front and back, the impact platform and the storage sleeve are jointly provided with storage grooves that pass through from top to bottom, the upper surface of the impact platform is evenly provided with a plurality of rectangular grooves that are connected one by one with the corresponding storage grooves, an impact pile extending from the lower end is slidably arranged in the storage sleeve, a return frame slidably plugged into the corresponding rectangular groove is fixedly arranged on the upper side of the impact pile, a slot that passes through the left and right is arranged on the return frame, handles are symmetrically fixedly arranged on the upper side of the return frame, a mounting plate slidably plugged into the corresponding slot is arranged on the upper side of the return frame and between the corresponding handles, the mounting plate is mounted on the upper side of the impact platform by bolts, and a second buffer pad is symmetrically fixedly arranged on the upper and lower sides of the mounting plate.

9. A new energy vehicle battery pack collision test device according to claim 7, characterized in that: The clamping drive part includes a cylinder three which is symmetrically fixed to the upper side of the impact platform through a support two, a connecting plate two which moves forward and backward is fixedly provided at the telescopic end of the cylinder three, and a U-shaped driving plate with an opening facing the corresponding guide column is symmetrically fixedly provided on the left and right sides of the connecting plate two, and oblique straight line grooves which pass through from top to bottom are provided on the horizontal sections which are symmetrical from top to bottom of the U-shaped driving plate.

10. A new energy vehicle battery pack collision test device according to claim 9, characterized in that: The driven clamping part includes two groups of guide rods symmetrically arranged on the front and rear sides of the guide column, each group is composed of guide rods symmetrical in top and bottom, the two groups of guide rods symmetrically arranged on the front and rear sides are fixed on the upper side of the impact platform through three left-right symmetrical supports, and the two groups of guide rods symmetrically arranged on the front and rear sides are symmetrically slidably arranged with U-shaped clamping blocks located on the inner side of the corresponding U-shaped driving plate, and damping pads are fixedly arranged on the opposite sides of the left-right symmetrical U-shaped clamping blocks, and sliding shafts slidably matched with the corresponding oblique linear grooves are symmetrically fixed on the upper and lower sides of the U-shaped clamping blocks.

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