Vibration test system and process of battery pack for new energy automobile

Abstract

The invention provides a vibration test system of a battery pack for a new energy automobile, which comprises a bottom plate, two mounting plates are symmetrically arranged on the upper side of the bottom plate, and a vibration structure is arranged between the two mounting plates and the bottom plate; through the vibration structure, the test box, the box door and the bearing plate, the comparison vibration test of the two battery packs is realized, the vibration test of the same amplitude can be conveniently carried out on the two battery packs at the same time, and the vibration test of different amplitudes can be conveniently carried out on the two battery packs at the same time. The problems of inconvenience in comparison test and inconvenience in simulation of influence of different vibration amplitudes on the battery pack in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the field of new energy vehicle battery testing equipment, and in particular to a vibration testing process for a battery pack for a new energy vehicle. Background Art

[0002] New energy vehicles have entered thousands of households, and green life is slowly spreading. However, as a new product, electric vehicles have many problems for all of us. The battery pack of new energy vehicles is a very important link. The maximum shape of the battery pack should meet the requirements of the installation space of the whole vehicle, and the installation and maintenance of the battery pack should be considered in the design. The installation position of the battery should take into account impact, vibration, rollover, etc., and the box should be able to withstand a certain degree of impact (it can be designed according to the impact performance test requirements of the battery module). Different models have different spaces left for the battery pack, so the design of the battery pack must be combined with the design of the whole vehicle.

[0003] In recent years, the research and development of battery pack technology has made significant progress, the technology has gradually matured, and has achieved commercialization to a certain extent. During the production process of battery packs for new energy vehicles, a vibration test system needs to be used to test the battery packs for new energy vehicles to judge the reliability and durability of the battery packs.

[0004] At present, the vibration test system for battery packs for new energy vehicles in the existing technology has the following problems: (1) The prior art can only test one battery pack at a time, which is inconvenient for comparative testing. In addition, the vibration amplitudes of the vibration test systems in the prior art are the same, which makes it inconvenient to simulate the effects of different vibration amplitudes on the battery pack, and the test flexibility is low; (2) The vibration test system in the prior art exposes the battery pack to a room temperature environment for testing. However, different working environment temperatures of the battery pack will also lead to different working effects of the battery. There will be huge differences in the working effects of the battery under different temperature environments, which makes it inconvenient to perform vibration tests on the battery pack under different temperature conditions. (3) The vibration test system in the prior art is not convenient for fixing the battery pack. Some systems use straps to fix the battery pack. During the test, the battery pack is prone to loosening and slipping, which reduces the test effect.

[0005] Therefore, we made improvements and proposed a vibration testing process and testing system for battery packs for new energy vehicles. Summary of the invention

[0006] The purpose of the present invention is to address the problems that the existing vibration test system is inconvenient to perform comparative tests, inconvenient to simulate vibration environments with different vibration amplitudes, inconvenient to test battery packs under different temperature conditions, and inconvenient to effectively fix the battery packs.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: Vibration testing system for battery packs used in new energy vehicles to improve the above problems.

[0008] The specific application is as follows: The cam is connected with the bottom plate of the second frame by the support frame, and the support frame has the advantages of easy installation and good control function, and the support frame has the advantages of high reliability and good control performance ...

[0009] As a preferred technical solution of the present application, the vibration structure includes four brackets evenly fixed on the base plate, each of the brackets is rotatably connected to a rotating shaft, the top end of the rotating shaft is fixedly connected to a turntable, the turntable is fixedly connected to a first mounting seat, a connecting rod is movably connected in the first mounting seat, the top end of the connecting rod is movably connected to a second mounting seat, the top end of the second mounting seat is fixedly connected to a moving block, a reciprocating plate is slidably connected in the moving block, guide rods are slidably connected on both sides of the reciprocating plate, and the bottom end of the guide rod is fixedly connected to the bracket, and a vibration column is symmetrically and fixedly connected to the reciprocating plate.

[0010] As a preferred technical solution of the present application, two fixed blocks are symmetrically and fixedly connected on the reciprocating plate, a first screw is rotatably connected between the two fixed blocks, a handwheel is fixedly connected to the rear end of the first screw, a connecting block is threadedly connected to the first screw, and the bottom end of the connecting block is fixedly connected to the moving block.

[0011] As a preferred technical solution of the present application, a driven bevel gear is fixedly connected to the bottom end of the rotating shaft, two support plates are symmetrically and fixedly connected to the bottom plate, a rotating rod is rotatably connected between the two support plates, a group of active bevel gears meshing with the driven bevel gear are fixedly connected to the rotating rod, a first motor is installed on the outer side of one of the support plates, and the driving end of the first motor is fixedly connected to the shaft end of the rotating rod.

[0012] As a preferred technical solution of the present application, the clamping structure includes a connecting shaft rotatably arranged at the center of the upper end surface of the test box, a driven gear is fixedly connected to the connecting shaft, a second motor is fixedly connected to the upper end surface of the test box, a driving end of the second motor passes through the top wall of the test box and is fixedly connected to a driving gear meshing with the driven gear, an assembly rod is fixedly connected to the bottom end of the connecting shaft, two groups of slide rails are symmetrically and fixedly connected to the inner top wall of the test box, a slide is slidably connected between each group of slide rails, a connecting rod is rotatably connected to the inner side wall of the slide, and the inner end of the connecting rod is rotatably connected to the assembly rod, and a splint is fixedly connected to the lower end surface of the slide.

[0013] As a preferred technical solution of the present application, the ejection linkage structure includes a fixed plate fixed on the inner bottom wall of the test box, a second screw rod is rotatably connected between the fixed plate and the test box, a third motor is fixedly connected to the rear side wall of the test box, and the driving end of the third motor passes through the rear side wall of the test box and is fixedly connected to the axial end of the second screw rod, an ejection block is threadedly connected to the second screw rod, and the top of the ejection block is fixedly connected to the supporting plate, both ends of the ejection block are slidably connected to sliding rods, and the two ends of the sliding rods are respectively fixedly connected to the fixed plate and the inner wall of the test box, the lower end surface of the supporting plate is fixedly connected to a matching column, the bottom end of the matching column is rotatably connected to a matching rod, the outer end of the matching rod is rotatably connected to a connecting plate, and the connecting plate is fixedly connected to the inner wall of the box door.

[0014] As a preferred technical solution of the present application, two eddy current fans are symmetrically and fixedly connected to the inner top wall of the test box, and a temperature sensor is installed on the inner top wall of the test box.

[0015] As a preferred technical solution of the present application, a control panel is installed on the outer side wall of the test box.

[0016] As a preferred technical solution of the present application, a rectangular opening is provided on the box door, and a transparent plate is sealed and fixedly connected in the rectangular opening.

[0017] The present invention also provides a vibration test process for a battery pack for a new energy vehicle, which is characterized by comprising the following steps: S1: First, the third motor is started to rotate the second screw, so that the ejection block moves outward, and then the carrying plate is driven to move outward. The outward movement of the carrying plate drives the matching rod to move, so that the carrying plate is moved out and the box door is opened at the same time, and then the battery pack to be tested is placed on the carrying plate, and then the third motor is driven to reset the carrying plate and close the box door in conjunction, and then the second motor is started to drive the driving gear to drive the driven gear to rotate, so that the connecting shaft and the assembly rod are rotated, and then the connecting rod is driven to rotate, and the rotation of the connecting rod drives the slide and the clamping plate to move inward synchronously, so as to clamp and fix the battery pack; S2: Start the heating wire to heat the two test boxes. The temperature in the two test boxes is monitored by the temperature sensor. The temperature coefficients in the two test boxes can be adjusted to be different to keep the vibration amplitude the same. If the temperature coefficients in the test boxes are different, the vibration amplitudes are adjusted to be different. When heating, start the eddy current fan to keep the temperature in the test box uniform. S3: In step 2, if the temperatures in the two test boxes are different, start the first motor to rotate the rotating rod, and the rotation of the rotating rod causes the active bevel gear to drive the driven bevel gear to rotate, thereby rotating the turntable, and the rotation of the turntable drives the connecting rod to rotate, so that the reciprocating plate and the vibration column maintain the same amplitude to perform vibration test on the battery pack in the test box; if the test temperature in the test box is the same, then the handwheel on the lower side of the left or right test box is rotated synchronously, and the handwheel drives the first screw to rotate, so that the connecting block moves, and then drives the moving block to move, so as to adjust the vibration amplitude of one of the test boxes, and then start the first motor to perform vibration test on the two battery packs with the same temperature and different vibration amplitudes, which is convenient for flexible adjustment and improves the flexibility of the test.

[0018] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of this application: 1. Through the vibration structure, test box, box door and load-bearing plate, a comparative vibration test of two battery packs is realized, which is convenient for simultaneously performing vibration tests of the same amplitude on two battery packs, and also convenient for simultaneously performing vibration tests of two battery packs with different amplitudes, thus solving the problems in the prior art of being inconvenient for comparative testing and inconvenient for simulating the effects of different vibration amplitudes on battery packs; 2. Through the test box, box door, heating wire and temperature sensor, different temperature environments are simulated when the battery pack is subjected to vibration test, which is convenient for vibration testing of battery packs under different temperature environments, and solves the problem in the prior art that it is inconvenient to perform vibration testing of battery packs under different temperature conditions; 3. Through the setting of the clamping structure, the load-bearing plate and the ejection linkage structure, the battery pack is automatically clamped and limited, which ensures the stability of the battery pack during testing and solves the problem of the inconvenience of fast and stable fixation of the battery pack in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of a vibration test system for a battery pack for a new energy vehicle provided in this application; Figure 2 A schematic diagram of the rear structure of the vibration test system for the battery pack for new energy vehicles provided in this application; Figure 3 A partial structural schematic diagram of the vibration structure of the vibration test system for the battery pack for new energy vehicles provided in this application; Figure 4 Provided for this application Figure 3 Schematic diagram of the bottom structure; Figure 5 A schematic diagram of the front view of the vibration test system for the battery pack for new energy vehicles provided in this application; Figure 6 A schematic diagram of the internal structure of a side view box of a vibration test system for a battery pack for a new energy vehicle provided in this application; Figure 7 A schematic diagram of the clamping structure of the vibration test system for the battery pack for new energy vehicles provided in this application; Figure 8 Schematic diagram of the push-out linkage structure of the vibration test system for the battery pack for new energy vehicles provided in this application.

[0020] Indicated in the figure: 1. Bottom plate; 2. Mounting plate; 3. Vibration structure; 301. Bracket; 302. Rotating shaft; 303. Turntable; 304. First mounting seat; 305. Linking rod; 306. Second mounting seat; 307. Moving block; 308. Reciprocating plate; 309. Guide rod; 3010. Vibration column; 3011. Fixed block; 3012. First screw rod; 3013. Hand wheel; 3014. Connecting block; 3015. Driven bevel gear; 3016. Support plate; 3017. Rotating rod; 3018. Active bevel gear; 3019. First motor; 4. Connecting column; 5. Connecting cylinder; 6. Spring; 7. Test box; 8. Box door; 9. Heating wire ; 10. Clamping structure; 1001. Connecting shaft; 1002. Driven gear; 1003. Second motor; 1004. Driving gear; 1005. Assembly rod; 1006. Slide rail; 1007. Slide rack; 1008. Connecting rod; 1009. Clamp; 11. Slideway; 12. Load-bearing plate; 13. Push-out linkage structure; 1301. Fixed plate; 1302. Second screw rod; 1303. Third motor; 1304. Push-out block; 1305. Slide rod; 1306. Matching column; 1307. Matching rod; 1308. Connecting piece; 14. Eddy current fan; 15. Temperature sensor; 16. Control panel; 17. Transparent plate. DETAILED DESCRIPTION

[0021] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0022] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the present embodiment proposes a vibration test system for a battery pack for a new energy vehicle, comprising a base plate 1, two mounting plates 2 are symmetrically arranged on the upper side of the base plate 1, a vibration structure 3 is arranged between the two mounting plates 2 and the base plate 1, the mounting plates 2 can be vibrated by the vibration structure 3, so that the test box 7 can be rotated, so as to facilitate the vibration test of the battery pack, the four corners of the lower end surfaces of the two mounting plates 2 are fixedly connected with connecting columns 4, the connecting columns 4 are slidably connected with connecting cylinders 5, and the bottom ends of the connecting cylinders 5 are respectively fixedly connected with the base plate 1, the inner bottom wall of the connecting cylinder 5 is fixedly connected with a spring 6, and the top end of the spring 6 is fixedly connected with the bottom end of the connecting column 4, the mounting plate 2 can be supported by the connecting column 4, the connecting cylinder 5 and the spring 6, and the test box 7 can also be vibrated well, so as to facilitate the vibration test of the battery pack, the upper end surfaces of the two mounting plates 2 are fixedly connected with the test box 7, the test box 7 is rotatably connected with a box door 8 through a hinge, and the left and right inner walls of the test box 7 are fixedly connected with heating wires 9, The temperature in the test box 7 can be adjusted by the heating wire 9, so that it is convenient to simulate different environments for the battery pack and to perform vibration tests on the battery pack under different temperature conditions. A clamping structure 10 is provided in the test box 7, and the clamping structure 10 is convenient for automatically clamping and fixing the battery pack to ensure the stability of the test. Two slides 11 are symmetrically and fixedly connected in the test box 7, and a carrying plate 12 is slidably connected between the two slides 11. The lower side of the carrying plate 12 is provided with a push-out linkage structure 13, which is convenient for pushing out the carrying plate 12, thereby facilitating the placement and pushing in of the battery pack, and the degree of automation is higher.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the vibration structure 3 includes four brackets 301 uniformly fixed on the bottom plate 1, each bracket 301 is rotatably connected to a rotating shaft 302, the top of the rotating shaft 302 is fixedly connected to a rotating disk 303, the rotating disk 303 is fixedly connected to a first mounting seat 304, the first mounting seat 304 is movably connected to a connecting rod 305, the top of the connecting rod 305 is movably connected to a second mounting seat 306, the top of the second mounting seat 306 is fixedly connected to a moving block 307, and the moving block 307 is slidably connected to a reciprocating plate 308, Guide rods 309 are slidably connected to both sides of the reciprocating plate 308, and the bottom ends of the guide rods 309 are fixedly connected to the bracket 301. Vibration columns 3010 are symmetrically and fixedly connected to the reciprocating plate 308. Two fixed blocks 3011 are symmetrically and fixedly connected to the reciprocating plate 308. A first screw rod 3012 is rotatably connected between the two fixed blocks 3011. A hand wheel 3013 is fixedly connected to the rear end of the first screw rod 3012. A connecting block 3014 is threadedly connected to the first screw rod 3012, and the bottom end of the connecting block 3014 is fixedly connected to the moving block 307. The bottom end of the rotating shaft 302 is fixedly connected to a driven cone. Gear 3015, two support plates 3016 are symmetrically and fixedly connected to the bottom plate 1, a rotating rod 3017 is rotatably connected between the two support plates 3016, and a group of active bevel gears 3018 meshing with the driven bevel gear 3015 are fixedly connected to the rotating rod 3017, a first motor 3019 is installed on the outer side of one of the support plates 3016, and the driving end of the first motor 3019 is fixedly connected to the shaft end of the rotating rod 3017; the rotating rod 3017 is rotated by the first motor 3019, and the rotation of the rotating rod 3017 causes the active bevel gear 3018 to drive the driven bevel gear 3015 to rotate The rotating disk 303 rotates, thereby rotating the connecting rod 305, and the reciprocating plate 308 and the vibration column 3010 vibrate the test box 7. It is worth noting that both ends of the connecting rod 305 are spheres, which can be universally rotated between the first mounting seat 304 and the second mounting seat 306. The first screw rod 3012 is rotated by rotating the hand wheel 3013, so that the connecting block 3014 is moved, and then the moving block 307 is driven to move, so that the amplitude of vibration can be adjusted, which is convenient for comparative testing of battery packs.

[0027] like Figure 1 , Figure 6 and Figure 7As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the clamping structure 10 includes a connecting shaft 1001 rotatably arranged at the center of the upper end surface of the test box 7, a driven gear 1002 is fixedly connected to the connecting shaft 1001, a second motor 1003 is fixedly connected to the upper end surface of the test box 7, a driving end of the second motor 1003 passes through the top wall of the test box 7 and is fixedly connected to a driving gear 1004 meshingly connected to the driven gear 1002, an assembly rod 1005 is fixedly connected to the bottom end of the connecting shaft 1001, and two sets of slide rails 1006 are symmetrically and fixedly connected to the inner top wall of the test box 7, and each set of slide rails 1006 are slidably connected to each other. There is a slide 1007, on the inner wall of the slide 1007 is rotatably connected a connecting rod 1008, and the inner end of the connecting rod 1008 is rotatably connected to the assembly rod 1005, and the lower end surface of the slide 1007 is fixedly connected with a clamping plate 1009; the driving gear 1004 is driven by the second motor 1003 to drive the driven gear 1002 to rotate, and then the connecting shaft 1001 and the assembly rod 1005 are rotated, thereby driving the connecting rod 1008 to rotate, and the rotation of the connecting rod 1008 drives the slide 1007 and the clamping plate 1009 to move inward synchronously, so as to clamp and fix the battery pack, facilitate automated clamping and fixation, and ensure the stability of the test.

[0028] like Figure 6 and Figure 8 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the ejection linkage structure 13 includes a fixed plate 1301 fixed on the inner bottom wall of the test box 7, a second screw 1302 is rotatably connected between the fixed plate 1301 and the test box 7, a third motor 1303 is fixedly connected to the rear side wall of the test box 7, and the driving end of the third motor 1303 passes through the rear side wall of the test box 7 and is fixedly connected to the axial end of the second screw 1302, an ejection block 1304 is threadedly connected to the second screw 1302, and the top end of the ejection block 1304 is fixedly connected to the bearing plate 12, and both ends of the ejection block 1304 are slidably connected to slide rods 1305, and both ends of the slide rod 1305 They are respectively fixedly connected to the fixing plate 1301 and the inner wall of the test box 7, and the lower end face of the carrying plate 12 is fixedly connected with a matching column 1306, the bottom end of the matching column 1306 is rotatably connected with a matching rod 1307, the outer end of the matching rod 1307 is rotatably connected with a connecting piece 1308, and the connecting piece 1308 is fixedly connected to the inner wall of the box door 8; the second screw rod 1302 is rotated by the third motor 1303, so that the ejection block 1304 moves outward, thereby driving the carrying plate 12 to move outward, and the outward movement of the carrying plate 12 drives the matching rod 1307 to move, so that the carrying plate 12 is moved out and the box door 8 is opened at the same time, so that the battery pack can be placed and pushed in conveniently.

[0029] like Figure 7As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, two vortex fans 14 are symmetrically and fixedly connected to the inner top wall of the test box 7, and a temperature sensor 15 is installed on the inner top wall of the test box 7; the vortex fans 14 can make the temperature in the test box 7 more uniform, and the temperature sensor 15 can be used to conveniently monitor the temperature in the test box 7 and facilitate temperature control.

[0030] like Figure 1 and Figure 2 As shown, as a preferred embodiment, on the basis of the above method, a control panel 16 is further installed on the outer wall of the test box 7; the control panel 16 is convenient for the test personnel to use and also convenient for adjusting the temperature. The temperature adjustment by the control panel 16 is a prior art and will not be described in detail here.

[0031] like Figure 1 As shown, as a preferred embodiment, on the basis of the above method, further, a rectangular opening is provided on the box door 8, and a transparent plate 17 is sealed and fixedly connected in the rectangular opening; the transparent plate 17 is used to facilitate viewing the vibration of the battery pack in the test box 7.

[0032] The present invention also includes a vibration testing process for a battery pack for a new energy vehicle, comprising the following steps: S1: First, start the third motor 1303 to rotate the second screw 1302, so that the ejection block 1304 moves outward, and then drives the carrier plate 12 to move outward. The carrier plate 12 moves outward and drives the matching rod 1307 to move, so that the carrier plate 12 moves out and the box door 8 opens at the same time, and then the battery pack to be tested is placed on the carrier plate 12, and then the third motor 1303 is driven to reset the carrier plate 12, and the box door 8 is closed in conjunction, and then the second motor 1003 is started to drive the driving gear 1004 to drive the driven gear 1002 to rotate, so that the connecting shaft 1001 and the assembly rod 1005 are rotated, and then the connecting rod 1008 is driven to rotate, and the rotation of the connecting rod 1008 drives the slide 1007 and the clamping plate 1009 to move inward synchronously, so as to clamp and fix the battery pack; S2: Start the heating wire 9 to heat the two test boxes 7, monitor the temperature in the two test boxes 7 through the temperature sensor 15, and adjust the temperature coefficients in the two test boxes 7 to be different, keep the vibration amplitude the same, if the temperature coefficients in the test boxes 7 are different, adjust the vibration amplitude to be different, and start the eddy current fan 14 during heating to keep the temperature in the test boxes 7 uniform; S3: In step 2, if the temperatures in the two test boxes 7 are different, the first motor 3019 is started to rotate the rotating rod 3017. The rotation of the rotating rod 3017 causes the active bevel gear 3018 to drive the driven bevel gear 3015 to rotate, thereby rotating the turntable 303. The rotation of the turntable 303 drives the connecting rod 305 to rotate, so that the reciprocating plate 308 and the vibration column 3010 maintain the same amplitude to perform vibration test on the battery pack in the test box 7; if the test temperature in the test box 7 is the same, the handwheel 3013 on the lower side of the left or right test box 7 is rotated synchronously, and the handwheel 3013 drives the first screw 3012 to rotate, so that the connecting block 3014 moves, and then the moving block 307 can be driven to move, so as to adjust the vibration amplitude of one of the test boxes 7, and then the first motor 3019 is started to perform vibration test on the two battery packs with the same temperature and different vibration amplitudes, which is convenient for flexible adjustment and improves the flexibility of testing.

[0033] Specifically, when the vibration test system for the battery pack of the new energy vehicle is working / in use: first, the third motor 1303 is started to rotate the second screw 1302, so that the ejection block 1304 moves outward, and then drives the carrier plate 12 to move outward, and the outward movement of the carrier plate 12 drives the matching rod 1307 to move, so that the carrier plate 12 moves outward and the box door 8 opens, and then the battery pack to be tested is placed on the carrier plate 12, and then the third motor 1303 is driven to reset the carrier plate 12 , and the box door 8 is closed in conjunction, and then the second motor 1003 is started to drive the driving gear 1004 to drive the driven gear 1002 to rotate, so that the connecting shaft 1001 and the assembly rod 1005 are rotated, and then the connecting rod 1008 is driven to rotate. The rotation of the connecting rod 1008 drives the slide 1007 and the clamping plate 1009 to move inward synchronously, so as to clamp and fix the battery pack; then the heating wire 9 is started to heat the two test boxes 7, and the temperature in the two test boxes 7 is monitored by the temperature sensor 15. degree, when heating, the eddy current fan 14 is started to keep the temperature in the test box 7 uniform; if the temperatures in the two test boxes 7 are different, the first motor 3019 is started to rotate the rotating rod 3017, and the rotation of the rotating rod 3017 causes the active bevel gear 3018 to drive the driven bevel gear 3015 to rotate, so that the turntable 303 is rotated, and the rotation of the turntable 303 drives the connecting rod 305 to rotate, so that the reciprocating plate 308 and the vibration column 3010 maintain the same amplitude to perform vibration test on the battery pack in the test box 7; if the test temperature in the test box 7 is the same, the hand wheel 3013 on the lower side of the left or right test box 7 is synchronously rotated, and the hand wheel 3013 drives the first screw 3012 to rotate, so that the connecting block 3014 is moved, and then the moving block 307 can be driven to move, so as to adjust the vibration amplitude of one of the test boxes 7, and then the first motor 3019 is started to perform vibration test on the two battery packs with the same temperature and different vibration amplitudes, which is convenient for flexible adjustment and improves the flexibility of testing.

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A vibration test system for a battery pack for a new energy vehicle, comprising a base plate (1), characterized in that: Two mounting plates (2) are symmetrically arranged on the upper side of the base plate (1), a vibration structure (3) is arranged between the two mounting plates (2) and the base plate (1), four corners of the lower end surfaces of the two mounting plates (2) are fixedly connected to connecting columns (4), the connecting columns (4) are slidably connected to connecting cylinders (5), and the bottom ends of the connecting cylinders (5) are respectively fixedly connected to the base plate (1), a spring (6) is fixedly connected to the inner bottom wall of the connecting cylinder (5), and the top end of the spring (6) is fixedly connected to the bottom end of the connecting column (4), the upper end surfaces of the two mounting plates (2) are fixedly connected to a test box (7), the test box (7) is rotatably connected to a box door (8) through a hinge, and the left and right inner walls of the test box (7) are fixedly connected to heating wires (9), A clamping structure (10) is provided in the test box (7), two slideways (11) are symmetrically and fixedly connected in the test box (7), a bearing plate (12) is slidably connected between the two slideways (11), and a push-out linkage structure (13) is provided on the lower side of the bearing plate (12).

2. A vibration test system for a battery pack for a new energy vehicle according to claim 1, characterized in that: The vibration structure (3) comprises four brackets (301) uniformly fixed on the bottom plate (1), each of the brackets (301) being rotatably connected to a rotating shaft (302), a rotating disk (303) being fixedly connected to the top of the rotating shaft (302), a first mounting seat (304) being fixedly connected to the rotating disk (303), a connecting rod (305) being movably connected inside the first mounting seat (304), a second mounting seat (306) being movably connected to the top of the connecting rod (305), a moving block (307) being fixedly connected to the top of the second mounting seat (306), a reciprocating plate (308) being slidably connected inside the moving block (307), guide rods (309) being slidably connected to both sides of the reciprocating plate (308), and the bottom ends of the guide rods (309) being fixedly connected to the bracket (301), and a vibration column (3010) being symmetrically and fixedly connected to the reciprocating plate (308).

3. A vibration test system for a battery pack for a new energy vehicle according to claim 2, characterized in that: Two fixed blocks (3011) are symmetrically and fixedly connected to the reciprocating plate (308); a first screw rod (3012) is rotatably connected between the two fixed blocks (3011); a hand wheel (3013) is fixedly connected to the rear end of the first screw rod (3012); a connecting block (3014) is threadedly connected to the first screw rod (3012); and the bottom end of the connecting block (3014) is fixedly connected to the moving block (307).

4. A vibration test system for a battery pack for a new energy vehicle according to claim 2, characterized in that: A driven bevel gear (3015) is fixedly connected to the bottom end of the rotating shaft (302); two support plates (3016) are symmetrically and fixedly connected to the bottom plate (1); a rotating rod (3017) is rotatably connected between the two support plates (3016); a group of driving bevel gears (3018) meshingly connected to the driven bevel gear (3015) are fixedly connected to the rotating rod (3017); a first motor (3019) is installed on the outer side of one of the support plates (3016); and a driving end of the first motor (3019) is fixedly connected to the shaft end of the rotating rod (3017).

5. A vibration test system for a battery pack for a new energy vehicle according to claim 1, characterized in that: The clamping structure (10) comprises a connecting shaft (1001) rotatably arranged at the center of the upper end surface of the test box (7), a driven gear (1002) being fixedly connected to the connecting shaft (1001), a second motor (1003) being fixedly connected to the upper end surface of the test box (7), a driving end of the second motor (1003) penetrating the top wall of the test box (7) and being fixedly connected to a driving gear (1004) meshing with the driven gear (1002), and the connecting shaft (1001 ) is fixedly connected to the bottom end of the assembly rod (1005), two groups of slide rails (1006) are symmetrically and fixedly connected on the inner top wall of the test box (7), a slide frame (1007) is slidably connected between each group of the slide rails (1006), a connecting rod (1008) is rotatably connected to the inner side wall of the slide frame (1007), and the inner end of the connecting rod (1008) is rotatably connected to the assembly rod (1005), and a clamping plate (1009) is fixedly connected to the lower end surface of the slide frame (1007).

6. A vibration test system for a battery pack for a new energy vehicle according to claim 1, characterized in that: The ejection linkage structure (13) comprises a fixing plate (1301) fixed on the inner bottom wall of the test box (7); a second screw rod (1302) is rotatably connected between the fixing plate (1301) and the test box (7); a third motor (1303) is fixedly connected to the rear side wall of the test box (7); a driving end of the third motor (1303) passes through the rear side wall of the test box (7) and is fixedly connected to the axial end of the second screw rod (1302); an ejection block (1304) is threadedly connected to the second screw rod (1302); and a top end of the ejection block (1304) is connected to the rear side wall of the test box (7). The supporting plate (12) is fixedly connected, and both ends of the ejection block (1304) are slidably connected to a sliding rod (1305), and the two ends of the sliding rod (1305) are respectively fixedly connected to the fixed plate (1301) and the inner wall of the test box (7), and the lower end surface of the supporting plate (12) is fixedly connected to a matching column (1306), and the bottom end of the matching column (1306) is rotatably connected to a matching rod (1307), and the outer end of the matching rod (1307) is rotatably connected to a connecting piece (1308), and the connecting piece (1308) is fixedly connected to the inner wall of the box door (8).

7. A vibration test system for a battery pack for a new energy vehicle according to claim 1, characterized in that: Two eddy current fans (14) are symmetrically and fixedly connected to the inner top wall of the test box (7), and a temperature sensor (15) is installed on the inner top wall of the test box (7).

8. A vibration test system for a battery pack for a new energy vehicle according to claim 1, characterized in that: A control panel (16) is installed on the outer side wall of the test box (7).

9. A vibration test system for a battery pack for a new energy vehicle according to claim 1, characterized in that: The box door (8) is provided with a rectangular opening, and a transparent plate (17) is sealed and fixedly connected inside the rectangular opening.

10. A testing process of a vibration testing system for a battery pack for a new energy vehicle according to any one of claims 1 to 9, characterized in that: The steps include: S1: First, the third motor (1303) is started to rotate the second screw rod (1302), thereby causing the ejection block (1304) to move outward, thereby driving the carrying plate (12) to move outward, and the outward movement of the carrying plate (12) drives the matching rod (1307) to move, thereby causing the carrying plate (12) to move outward and the box door (8) to open, and then the battery pack to be tested is placed on the carrying plate (12), and then the third motor (1303) is driven to reset the carrying plate (12) and to close the box door (8), and then the second motor (1003) is started to drive the driving gear (1004) to drive the driven gear (1002) to rotate, thereby causing the connecting shaft (1001) and the assembly rod (1005) to rotate, thereby driving the connecting rod (1008) to rotate, and the rotation of the connecting rod (1008) drives the slide (1007) and the clamping plate (1009) to move inward synchronously, thereby clamping and fixing the battery pack; S2: starting the heating wire (9) to heat the two test boxes (7), monitoring the temperature inside the two test boxes (7) through the temperature sensor (15), adjusting the temperature coefficients inside the two test boxes (7) to be different, and maintaining the same vibration amplitude; if the temperature coefficients inside the test boxes (7) are different, adjusting the vibration amplitude to be different, and starting the eddy current fan (14) during heating to keep the temperature inside the test boxes (7) uniform; S3: In step 2, if the temperatures in the two test boxes (7) are different, the first motor (3019) is started to rotate the rotating rod (3017). The rotation of the rotating rod (3017) causes the driving bevel gear (3018) to drive the driven bevel gear (3015) to rotate, thereby causing the rotating disk (303) to rotate. The rotation of the rotating disk (303) drives the connecting rod (305) to rotate, thereby causing the reciprocating plate (308) and the vibration column (3010) to maintain the same amplitude to perform a vibration test on the battery pack in the test box (7); if the test When the test temperatures in the boxes (7) are the same, the handwheel (3013) on the lower side of the left or right test box (7) is synchronously rotated, and the handwheel (3013) drives the first screw (3012) to rotate, thereby moving the connecting block (3014), and then driving the moving block (307) to move, so as to adjust the vibration amplitude of one of the test boxes (7), and then start the first motor (3019) to perform vibration tests on the two battery packs with the same temperature and different vibration amplitudes, so as to facilitate flexible adjustment and improve the flexibility of the test.

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