Battery frame multi-field coupling performance test bench for multi-condition load

Abstract

The application relates to the technical field of battery frame testing, in particular to a battery frame multi-field coupling performance test bench for multiple working condition loads, which comprises a test bin, a vibrating plate, two side frames, a support, four clamping assemblies and two transmission assemblies. The transmission assembly comprises a fixing ring fixedly arranged on the upper side of the side frame, and a follower is arranged on the inner side of the fixing ring. In the application, the four clamping assemblies are diagonally arranged and alternately clamped by swinging, the stress points on both sides of the battery frame are in different motion phases during swinging, thereby naturally generating periodic torsional deformation, so that the additional load borne by the battery frame due to the body distortion in the actual vehicle driving is simulated, the test bench can synchronously test the corrosion resistance and structural durability of the battery frame under the torsional working condition in the salt spray environment, and the comprehensiveness of the device for testing the battery frame is improved.

Description

Technical Field

[0001] This invention relates to the field of battery frame testing technology, specifically a test bench for the multi-field coupling performance of battery frames under multiple operating conditions. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the power battery system, as the core energy component of a vehicle, directly affects the vehicle's lifespan and driving safety through its safety and reliability. The battery frame, as a key structural component that supports the battery modules and fixes the battery system to the vehicle body, endures complex multi-stress coupling during actual service. When vehicles travel in coastal or humid areas, the battery frame is continuously exposed to an atmospheric environment containing salt spray; simultaneously, road surface vibrations generated during vehicle operation are transmitted to the battery frame through the vehicle body, subjecting it to long-term, multi-axis, wide-frequency mechanical vibration loads. Therefore, weather resistance testing of the battery frame is one of the routine testing items. Existing testing methods often separate physical testing from salt spray corrosion testing. However, under real service conditions, salt spray corrosion and mechanical vibration do not act on the battery frame in isolation, but rather simultaneously and mutually reinforce each other. Under vibration, the corrosive medium is more likely to penetrate into structural gaps and microcracks, while vibration stress in the corrosive environment accelerates the initiation and propagation of cracks. This causes the existing isolated salt spray test results to be distorted in representing the battery frame under combined operating conditions. To address this, a multi-field coupling performance test bench for battery frames under multiple operating conditions is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a test bench for the multi-field coupling performance of a battery frame under multiple operating conditions, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A test bench for multi-field coupling performance of battery frames under multiple load conditions includes:

[0006] The test chamber has two internal layers.

[0007] A vibrating plate is slidably disposed in the upper layer inside the test chamber, and a vibrating motor for driving its vibration is fixedly disposed in the lower layer inside the test chamber. Side frames are fixedly installed at both ends of the vibrating plate, and a transmission assembly is fixedly installed at the top of the side frames. The transmission assembly includes a fixed ring fixedly disposed on the upper side of the side frame, and a follower is disposed on the inner side of the fixed ring.

[0008] The bracket is positioned between the two fixing rings;

[0009] There are four clamping components, which are respectively located on both sides of the bracket to clamp the battery frame and drive the battery frame to swing.

[0010] The spray assembly, located at the top of the test chamber, is used to continuously supply salt spray into the test chamber.

[0011] Furthermore, the follower includes a collar rotatably disposed inside the fixed ring, and a connecting frame is fixedly disposed inside the collar;

[0012] A connecting shaft is fixedly installed on the side of the connecting frame away from the support. One end of the connecting shaft is fixedly connected to the side wall of the support, and a ratchet is fixedly installed on the other end of the connecting shaft. When the ratchet rotates, it drives the support to rotate synchronously through the connecting shaft.

[0013] A fixing block is provided on one side of the ratchet, and the fixing block is fixedly installed inside the test chamber. A pawl is rotatably provided on one side of the fixing block, and a return spring is fixedly installed on the lower side of the pawl. The other end of the return spring is fixedly installed on the fixing block.

[0014] The pawl engages with the ratchet, and the pawl can only rotate downwards.

[0015] Furthermore, a first rack is fixedly installed on the connecting frame, and a second rack is fixedly installed on the inner side of the collar;

[0016] The bracket is symmetrically rotatably mounted on the side near the collar. The first rack and the second rack are both on the travel path of the two drive gears and are located on different sides of the two drive gears.

[0017] Furthermore, a limiting gear is coaxially fixedly provided on the drive gear, a locking block corresponding to the position of the limiting gear is slidably provided on one side of the bracket, and a compression spring for pushing the locking block is fixedly provided on the side of the bracket near the locking block.

[0018] The inner side of the collar is fixedly provided with a protrusion corresponding to the position of the locking block, and the protrusion has a corresponding slot at the position corresponding to the first rack and the second rack.

[0019] Furthermore, the fixing ring and the collar are fixed together by detachable screws;

[0020] The bracket is fixedly connected to the outside of the fixing ring by detachable screws;

[0021] The connecting shaft is divided into two sections, and the two sections are fixedly connected by detachable screws.

[0022] A detachable connecting rod is provided between the connecting shaft and the collar.

[0023] Furthermore, the clamping assembly includes a support plate slidably disposed inside the bracket, and a transmission component for driving the support plate to slide is provided between the support plate and the side wall of the bracket.

[0024] Furthermore, the transmission component includes a first bevel gear fixedly connected to the drive gear on the same axis, and a second bevel gear meshing with the first bevel gear. Both the first bevel gear and the second bevel gear are rotatably mounted on the side of the bracket close to the support plate.

[0025] A screw is fixedly installed on the second bevel gear, and a slider is threadedly connected to the outer side of the screw.

[0026] A connecting block is fixedly installed on the side of the support plate near the slider. One end of the connecting block is slidably installed inside the slider, and a support spring is symmetrically fixedly installed on the lower side of the connecting block. The bottom end of the support spring is fixedly connected to the slider.

[0027] Furthermore, the top of the screw extends beyond the top of the slider, and a vertical rod is slidably inserted into the upper side of the screw, the vertical rod being rotatably mounted on one side of the support plate;

[0028] A No. 3 bevel gear is fixedly installed on the upper side of the vertical rod, and a No. 4 bevel gear is meshed on the No. 3 bevel gear. The No. 4 bevel gear is rotatably mounted on one side of the support plate.

[0029] The support plate has clamping blocks symmetrically arranged on the side away from the transmission component, and a connecting component for driving the clamping blocks to slide is provided between the clamping block on the upper side and the No. 4 bevel gear.

[0030] Furthermore, the connecting component includes a turntable rotatably mounted on one side of the support plate, and the turntable is coaxially and fixedly connected to the fourth bevel gear;

[0031] A protruding rod is fixedly provided on the side of the turntable near the clamping block, and a sliding rod is sleeved on the protruding rod;

[0032] The other end of the slide rod is fixedly provided with a limiting block, and one side of the support plate is fixedly provided with a slide groove for limiting the limiting block. One end of the limiting block is slidably disposed in the slide groove, and the other end of the limiting block is fixedly connected to the clamping block located on the upper side.

[0033] The support plate is symmetrically fixed with fixing grooves on one side near the clamping block, and the two fixing grooves are respectively located on both sides of the clamping block.

[0034] The fixed groove has two toothed blocks symmetrically slidingly arranged inside, and one end of each toothed block is fixedly connected to the ends of two clamping blocks located on the upper and lower sides respectively.

[0035] A transmission gear is provided between the two tooth blocks and meshes with the two tooth blocks, and the transmission gear is rotatably disposed in a fixed groove.

[0036] Furthermore, the spray assembly includes a saline tank fixedly installed on the upper side of the test chamber, and a spray head fixedly installed on the top of the inner side of the test chamber;

[0037] A brine pump is fixedly installed between the brine tank and the spray head, and the outlet and inlet of the brine pump are respectively fixedly connected to the spray head and the brine tank by pipes.

[0038] A return pipe connected to the inside of the test chamber is fixedly installed on one side of the saline tank, and the inlet of the return pipe is located at the lowest point of the upper layer inside the test chamber.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. By setting up a bracket, follower and four clamping components, the follower drives the bracket to rotate under the vibration drive of the vibrating plate, and the bracket drives the clamping components holding the battery frame to rotate, thereby realizing the flipping and vibration of the battery frame. The follower synchronously drives the four clamping components to alternately clamp the battery frame. Combined with the flipping, the battery frame is more fully exposed to salt spray. The vibration simulates the vibration generated by the battery frame during driving.

[0041] Furthermore, the four clamping components are arranged diagonally and swing with the battery frame to apply a torsional tendency. The four clamping components apply force to the four corners of the battery frame, and the two clamping components on the diagonal are synchronous and apply the same load. Between the two diagonals, opposite torques are applied alternately, thus forming a periodically changing torque load on the battery frame, which induces cyclic torsional deformation of the battery frame. This simulates the usage scenario of the battery frame under torsional conditions and high salt spray environment. The torsional simulation is the situation when the battery frame is subjected to uneven external load during actual vehicle driving. This allows the test bench to test the weather resistance of the battery frame in a salt spray environment under dynamic conditions, improving the comprehensiveness of the device for testing the battery frame.

[0042] 2. By using a detachable connecting shaft, connecting rod, and lockable bracket, and by rotating the collar via the connecting rod, the clamping assembly causes the battery frame to swing during the test and alternately clamps the battery frame. This enables the testing of the battery frame's salt spray corrosion resistance without flipping it over. The components can be switched as needed, improving the versatility of the test. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 This is a cross-sectional view of the test chamber structure in this invention;

[0045] Figure 3 This is a schematic diagram of the spray assembly structure in this invention;

[0046] Figure 4 This is a schematic diagram of the transmission component and clamping component in this invention;

[0047] Figure 5 This is an exploded view of the transmission component structure in this invention;

[0048] Figure 6 This is the present invention. Figure 5 Enlarged view of the structure at point A in the middle;

[0049] Figure 7 This is a side view of the transmission structure in this invention;

[0050] Figure 8 This is the present invention. Figure 7 Enlarged view of the structure at point B in the middle;

[0051] Figure 9 This is a schematic diagram of the clamping component structure in this invention;

[0052] Figure 10 This is a schematic diagram of the transmission component structure in this invention;

[0053] Figure 11 This is a side view of the clamping component structure in this invention;

[0054] Figure 12 This is a cross-sectional view of the support plate structure in this invention.

[0055] In the diagram: 1. Test chamber; 2. Vibration plate; 3. Side frame; 4. Support; 5. Transmission assembly; 51. Fixed ring; 52. Follower; 521. Collar; 522. Connecting frame; 523. Rack No. 1; 524. Rack No. 2; 525. Drive gear; 526. Limit gear; 527. Clamping block; 528. Compression spring; 529. Protrusion; 53. Connecting shaft; 54. Ratchet; 55. Fixed block; 56. Pawl; 57. Return spring; 58. Connecting rod; 6. Clamping assembly; 61. Support plate; 62. Transmission component; 621. 622. Bevel gear #2; 623. Screw; 624. Slider; 625. Connecting block; 626. Support spring; 627. Vertical rod; 628. Bevel gear #3; 629. Bevel gear #4; 63. Connector; 631. Turntable; 632. Protruding rod; 633. Sliding rod; 634. Limiting block; 635. Slide groove; 64. Clamping block; 65. Fixing groove; 66. Tooth block; 67. Transmission gear; 7. Spray assembly; 71. Salt water tank; 72. Spray head; 73. Salt water pump; 74. Return pipe; 8. Vibration motor. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Please see Figures 1 to 4 In this embodiment of the invention, a multi-field coupling performance test bench for battery frames under multiple operating conditions includes a test chamber 1, a vibration plate 2, a support 4, a clamping assembly 6, and a spraying assembly 7. The test chamber 1 is divided into upper and lower layers. The vibration plate 2 is slidably disposed in the upper layer of the test chamber 1, and a vibration motor 8 for driving its vibration is fixedly disposed in the lower layer of the test chamber 1. Side frames 3 are fixedly installed at both ends of the vibration plate 2, and a transmission assembly 5 is fixedly installed at the top of the side frames 3. The transmission assembly 5 includes a fixing ring 51 fixedly disposed on the upper side of the side frame 3, and a follower 52 is disposed on the inner side of the fixing ring 51. The support 4 is disposed between the two fixing rings 51. There are four clamping assemblies 6, which are respectively disposed on both sides of the support 4 to clamp the battery frame and drive the battery frame to swing. The spraying assembly 7 is disposed on the top of the test chamber 1 to continuously provide salt spray into the test chamber 1.

[0058] Specifically, such as Figures 1 to 4 As shown, a control cabinet is installed on one side of the test chamber 1. The operation of the internal mechanism of the test chamber 1 is controlled by operating the control cabinet, and the test data is observed and analyzed. When conducting the corrosion resistance test of the battery frame, the two sides of the battery frame are first clamped by four clamping components 6. Then, the vibration motor 8 is started to drive the vibration plate 2 to vibrate up and down, and drive the battery frame to vibrate synchronously. At the same time, the spray component 7 is started to continuously input salt spray into the test chamber 1 to simulate the external corrosive environment and conduct corrosion resistance test on the battery frame. During this process, the vibration plate 2 is transmitted through the follower 52 when vibrating. While driving the bracket 4 to rotate, it drives multiple clamping components 6 to alternately clamp various parts of the battery frame and perform reciprocating motion to simulate the state of the battery frame being bumped by the vehicle body under actual conditions. The alternating clamping of the battery frame ensures that the salt spray can completely cover all parts of the battery frame, thereby improving the accuracy of the test. Secondly, in order to avoid the internal components of the test chamber 1 being corroded by the salt spray, the vibration plate 2, side frame 3, bracket 4, transmission component 5 and clamping component 6 inside the test chamber 1 are all made of corrosion-resistant titanium alloy.

[0059] Example 1

[0060] like Figures 2 to 3As shown, in this embodiment, the spray assembly 7 includes a saline tank 71 fixedly mounted on the upper side of the test chamber 1. A spray head 72 is fixedly mounted on the top of the inner side of the test chamber 1. A saline pump 73 is fixedly mounted between the saline tank 71 and the spray head 72. The outlet and inlet of the saline pump 73 are respectively connected to pipes between the spray head 72 and the saline tank 71. After the battery frame is clamped by the clamping assemblies 6, the saline pump 73 is activated to pump saline into the spray head 72, and the saline mist is sprayed through the spray head 72. The salt spray is sprayed onto the upper layer inside the test chamber 1, covering the surface of the battery frame for corrosion resistance testing. A return pipe 74 connected to the inside of the test chamber 1 is fixedly installed on one side of the salt water tank 71. The inlet of the return pipe 74 is located at the lowest point of the upper layer inside the test chamber 1. As the salt water pump 73 draws out the salt water from the inside of the salt water tank 71, a negative pressure is generated inside the salt water pump 73, and the salt spray that gathers at the lowest point of the upper layer inside the test chamber 1 is recycled back into the salt water tank 71 through the return pipe 74 for reuse.

[0061] like Figures 2 to 6 As shown, in this embodiment, the follower 52 includes a collar 521 rotatably disposed inside the fixed ring 51. A connecting frame 522 is fixedly disposed inside the collar 521. A connecting shaft 53 is fixedly disposed on the side of the connecting frame 522 away from the bracket 4. A ratchet 54 is fixedly disposed on the other end of the connecting shaft 53. When the vibration motor 8 starts and drives the vibration plate 2 to vibrate up and down, the vibration plate 2 drives the connecting shaft 53 and the ratchet 54 to vibrate synchronously. A fixing block 55 is disposed on one side of the ratchet 54. The fixing block 55 is fixedly disposed inside the test chamber 1. A pawl 56 is rotatably disposed on one side of the fixing block 55. A return spring 57 is fixedly installed on the lower side of 56, and the other end of the return spring 57 is fixedly installed on the fixed block 55. When the ratchet 54 vibrates up and down, it continuously collides with the pawl 56. The pawl 56 engages with the ratchet 54, and the pawl 56 can only rotate downward. Since the pawl 56 cannot rotate upward, when the ratchet 54 moves upward and contacts the pawl 56, the pawl 56 pushes the ratchet 54, causing the ratchet 54 to rotate. When the ratchet 54 moves downward, the pawl 56 is squeezed and deflected downward, so that when the ratchet 54 moves up and down, the ratchet 54 always rotates in the same direction.

[0062] like Figures 4 to 7 As shown, in this embodiment, the fixing ring 51 and the collar 521 are fixed together by detachable screws. When the battery frame needs to rotate during the test, the collar 521 is locked by tightening the screws on the fixing ring 51. The other end of the connecting shaft 53 is inserted into the rotating shaft of the connecting bracket 522. Therefore, locking the collar 521 and the connecting bracket 522 does not affect the rotation of the connecting shaft 53. One end of the connecting shaft 53 is fixedly connected to the side wall of the bracket 4. When the ratchet 54 rotates, it drives the bracket 4 to rotate synchronously through the connecting shaft 53, thereby driving the battery frame to rotate.

[0063] like Figures 4 to 7 As shown, in this embodiment, a drive gear 525 is symmetrically rotatably arranged on the side of the bracket 4 near the collar 521. The drive gear 525 rotates with the bracket 4. A first rack 523 is fixedly arranged on the connecting frame 522, and a second rack 524 is fixedly arranged on the inner side of the collar 521. Both the first rack 523 and the second rack 524 are on the travel path of the two drive gears 525. When the bracket 4 rotates, the drive gear 525 is driven to rotate one revolution when passing the first rack 523, and rotates one revolution in the opposite direction when passing the second rack 524.

[0064] like Figures 7 to 8 As shown, in this embodiment, a limiting gear 526 is coaxially fixedly mounted on the drive gear 525. A locking block 527 corresponding to the position of the limiting gear 526 is slidably mounted on one side of the bracket 4. A compression spring 528 for pushing the locking block 527 is fixedly mounted on the side of the bracket 4 near the locking block 527. A protrusion 529 corresponding to the position of the locking block 527 is fixedly mounted on the inner side of the collar 521. The protrusion 529 has slots at positions corresponding to the first rack 523 and the second rack 524. When the drive gear 525 is not meshed with the first rack 523 or the second rack 524, the locking block 527 is pushed by the protrusion 529. The compression on one side of the limiting gear 526 keeps the locking block 527 engaged with the limiting gear 526, so that the drive gear 525 does not rotate when it is not engaged with the first rack 523 or the second rack 524. When the drive gear 525 passes the first rack 523 or the second rack 524, the compression spring 528 pushes one end of the locking block 527 into the corresponding slot on the protrusion 529. At this time, the locking block 527 is disconnected from the limiting gear 526. That is, when the drive gear 525 rotates on the first rack 523 or the second rack 524, the first rack 523 or the second rack 524 drives the drive gear 525 to rotate.

[0065] like Figures 7 to 9 As shown, in this embodiment, the clamping assembly 6 includes a support plate 61 slidably disposed inside the bracket 4. A transmission component 62 for driving the support plate 61 to slide is disposed between the support plate 61 and the side wall of the bracket 4. The transmission component 62 includes a first bevel gear 621 coaxially and fixedly connected to the drive gear 525. When the drive gear 525 rotates, it synchronously drives the first bevel gear 621 to rotate. A second bevel gear 622 is meshed on the first bevel gear 621. The first bevel gear 621 and the second bevel gear 622 are both rotatably disposed on the side of the bracket 4 near the support plate 61. A screw 623 is fixedly disposed on the second bevel gear 622. When the first bevel gear 621 rotates, it synchronously drives the second bevel gear 622 and the screw 623 to rotate.

[0066] like Figures 7 to 9As shown, in this embodiment, a slider 624 is threadedly connected to the outer side of the screw 623. A connecting block 625 is fixedly provided on the side of the support plate 61 near the slider 624. One end of the connecting block 625 is slidably disposed inside the slider 624, and a support spring 626 is symmetrically fixedly provided on the lower side of the connecting block 625. The bottom end of the support spring 626 is fixedly connected to the slider 624.

[0067] Specifically, when the screw 623 rotates, it drives the slider 624 to move up and down. When the slider 624 moves upward, it drives the bottom end of the support spring 626 to move upward, increasing the upward thrust of the support spring 626 on the support plate 61. Conversely, when the slider 624 moves downward, the support spring 626 decreases the upward thrust on the support plate 61, thus changing the load force on the battery frame. This is achieved by the first bevel gear 621 driving the second bevel gear 622 to rotate, causing the screw 623 to rotate one revolution synchronously. The slider 624 rises or falls by one pitch, thereby driving the support plate 61 to rise or fall by one pitch. This is achieved through the drive gears. The reciprocating rotation of 525 drives the reciprocating lifting and lowering of slider 624. The initial angles of the two screws 623 located at the same end of the bracket 4 are different, so that when the two clamping components 6 at the same end are simultaneously clamping the battery frame, the applied loads are different. The fan-shaped areas corresponding to rack 523 and rack 524 on the fixing ring 51 are less than 180 degrees, so that the four clamping components 6 can simultaneously clamp the battery frame. The collars 521 on the two fixing rings 51 are 180 degrees apart, so that the two clamping components 6 on the diagonal are synchronized with each other.

[0068] Four clamping components 6, arranged diagonally in a synchronized manner, apply a torsional tendency to the battery frame. Each of the four clamping components 6 applies force to one of the four corners of the battery frame, with the two diagonal clamping components 6 operating synchronously and applying the same load. Between the two diagonals, opposing torques are applied alternately, thus creating a periodically changing torque load on the battery frame. This induces cyclic torsional deformation of the battery frame, simulating the battery frame's usage scenario under torsional conditions combined with a high salt spray environment. The torsional simulation reflects the uneven external load on the battery frame during actual vehicle operation, enabling this test bench to test the weather resistance of the battery frame under dynamic operating conditions in a salt spray environment, thus improving the comprehensiveness of the device's battery frame testing.

[0069] like Figures 7 to 10As shown, in this embodiment, the top of the screw 623 extends beyond the top of the slider 624, and a vertical rod 627 is slidably inserted into the upper side of the screw 623. The vertical rod 627 is rotatably disposed on one side of the support plate 61. A third bevel gear 628 is fixedly disposed on the upper side of the vertical rod 627. A fourth bevel gear 629 is meshed on the third bevel gear 628. The fourth bevel gear 629 is rotatably disposed on one side of the support plate 61. When the screw 623 rotates, it drives the vertical rod 627 and the third bevel gear 628 to rotate synchronously, and drives the fourth bevel gear 629 to rotate through the third bevel gear 628.

[0070] like Figures 7 to 12 As shown, in this embodiment, clamping blocks 64 are symmetrically arranged on the side of the support plate 61 away from the transmission member 62. A connecting member 63 for sliding the clamping block 64 is provided between the upper clamping block 64 and the fourth bevel gear 629. The connecting member 63 includes a turntable 631 rotatably mounted on one side of the support plate 61, and the turntable 631 is coaxially and fixedly connected to the fourth bevel gear 629. When the fourth bevel gear 629 rotates, it drives the turntable 631 to rotate synchronously. A protruding rod 632 is fixedly provided on the side of the turntable 631 near the clamping block 64. A sliding rod 633 is sleeved on the protruding rod 632. A limit block 634 is fixedly provided at the other end of the sliding rod 633. A limit block 634 is fixedly provided on one side of the support plate 61 for limiting the limit block 634. The sliding groove 635 has a limiting block 634 slidably disposed in it. When the turntable 631 rotates, it moves the sliding rod 633 through the protruding rod 632, causing the sliding rod 633 to slide. The size of the fourth bevel gear 629 is twice that of the third bevel gear 628. That is, when the third bevel gear 628 rotates one revolution, it drives the fourth bevel gear 629 to rotate half a revolution, and simultaneously drives the turntable 631 to rotate half a revolution. The turntable 631 drives the protruding rod 632 to rotate from the highest point to the lowest point, thereby driving the sliding rod 633 to slide from the highest point to the lowest point, so that the two clamping blocks 64 complete the clamping. Alternatively, the protruding rod 632 rotates from the lowest point to the highest point, causing the sliding rod 633 to slide from the lowest point to the highest point, so that the two clamping blocks 64 complete the clamping.

[0071] like Figures 7 to 12As shown, in this embodiment, the other end of the limiting block 634 is fixedly connected to the clamping block 64 located on the upper side. When the sliding rod 633 rotates from the highest point to the lowest point, it drives the clamping block 64 to slide from the highest point to the lowest point, or from the lowest point to the highest point. The support plate 61 is symmetrically fixedly provided with fixing grooves 65 on the side near the clamping block 64. The two fixing grooves 65 are respectively provided on both sides of the clamping block 64. Two toothed blocks 66 are symmetrically slidably arranged inside the fixing grooves 65. One end of the two toothed blocks 66 is fixedly connected to the ends of the two clamping blocks 64 located on the upper and lower sides, respectively. When the clamping block 64 located on the upper side slides... The transmission gear 67 is provided between the two tooth blocks 66 and meshes with them. The transmission gear 67 is rotatably mounted in the fixed groove 65. When one tooth block 66 slides, it drives the transmission gear 67 to rotate and simultaneously drives the other tooth block 66 to slide in the opposite direction. At the same time, it drives the other clamping block 64 to slide in the opposite direction, so that the two clamping blocks 64 move towards each other. A rubber pad is provided on the clamping surface of the clamping block 64. The pad has a certain deformation margin to ensure that when the two clamping blocks 64 move to the closest point, the battery frame can be firmly clamped.

[0072] In the initial state, all four sets of clamping blocks 64 are clamping the battery frame. When a drive gear 525 passes through rack 523 and rack 524 in sequence, it drives the corresponding set of clamping blocks 64 to change from clamping to releasing and then from releasing to clamping. The other drive gear 525 is in an idle state. That is, the other set of clamping blocks 64 on the same side always remains in a clamping state. This process is repeated. In addition, among the four sets of clamping blocks 64 on both sides of the bracket 4, the two sets of clamping blocks 64 at opposite corners are simultaneously in a releasing or clamping state to improve the clamping stability of the battery frame and prevent the battery frame from shifting to one side. This allows the salt spray to cover all parts of the battery frame, improving the accuracy of the test and simulating the actual situation where the force on the battery frame mounting point changes with the posture of a real vehicle.

[0073] When the clamping assembly 6 drives the battery frame to swing and alternately clamp, the battery frame undergoes a slight twist during the swing. During this twisting process, the battery frame compresses against the clamping block 64 that is holding it and applies pressure to it.

[0074] At this time, under the compression of the battery frame, the support spring 626 deforms to absorb some of the compression energy and prevent damage to the device. At the same time, the deformation of the battery frame is used to test its corrosion resistance under torsion, which further improves the diversity of battery frame testing.

[0075] Example 2

[0076] like Figures 6 to 11As shown in Embodiment 1, to facilitate testing the corrosion resistance of the battery frame under non-rotational conditions, in this embodiment, the bracket 4 is fixedly connected to the outer side of the fixing ring 51 by a detachable screw. During the test of the battery frame under rotational conditions, this screw is in a detached state. At this time, the screw connecting the bracket 4 and the fixing ring 51 is tightened, fixing the bracket 4 to the fixing ring 51. The connecting shaft 53 is divided into two sections, and the two sections are fixedly connected by a detachable screw. The sections of the connecting shaft 53 are then separated, disconnecting it from the bracket 4. The connecting shaft 53 and the sleeve... A detachable connecting rod 58 is provided between the rings 521. Then, the connecting rod 58 is installed, and the screws locking the fixing ring 51 and the collar 521 are removed. At this time, when the connecting shaft 53 vibrates, it drives the collar 521 to rotate through the connecting rod 58, and drives the first rack 523 and the second rack 524 to contact the two drive gears 525 in turn, and drive them to rotate. At this time, the bracket 4 only vibrates with the fixing ring 51 without rotating, thereby realizing the corrosion resistance test of the battery frame under the condition of no rotation, and further improving the diversity of battery frame testing of the device.

[0077] In this invention, the vibration motor 8 drives the vibration plate 2 to vibrate, the brine pump 73 pumps brine from the brine tank 71, and the control cabinet on one side of the test chamber 1 controls the operation of the internal mechanism of the test chamber 1. The vibration motor 8, the brine pump 73 and the control cabinet are all existing technologies and will not be described in detail.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0079] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A test bench for multi-field coupling performance of a battery frame under multiple load conditions, characterized in that, include: The test chamber (1) is divided into two layers. A vibrating plate (2) is slidably disposed in the upper layer inside the test chamber (1), and a vibrating motor (8) for driving its vibration is fixedly disposed in the lower layer inside the test chamber (1). Side frames (3) are fixedly installed at both ends of the vibrating plate (2), and a transmission assembly (5) is fixedly installed at the top of the side frame (3). The transmission assembly (5) includes a fixing ring (51) fixedly disposed on the upper side of the side frame (3), and a follower (52) is disposed on the inner side of the fixing ring (51). The bracket (4) is positioned between two fixing rings (51); The clamping components (6) are four in number. The four clamping components (6) are respectively set on both sides of the bracket (4) to clamp the battery frame and drive the battery frame to swing. A spray assembly (7) is installed on top of the test chamber (1) to continuously supply salt spray into the test chamber (1).

2. The battery frame multi-field coupling performance test bench for multi-condition loads as described in claim 1, characterized in that, The follower (52) includes a collar (521) rotatably disposed inside the fixed ring (51), and a connecting frame (522) is fixedly disposed inside the collar (521). A connecting shaft (53) is fixedly installed on the side of the connecting frame (522) away from the support (4). One end of the connecting shaft (53) is fixedly connected to the side wall of the support (4), and a ratchet (54) is fixedly installed on the other end of the connecting shaft (53). When the ratchet (54) rotates, it drives the support (4) to rotate synchronously through the connecting shaft (53). A fixing block (55) is provided on one side of the ratchet (54). The fixing block (55) is fixedly installed inside the test chamber (1). A pawl (56) is rotatably provided on one side of the fixing block (55). A return spring (57) is fixedly installed on the lower side of the pawl (56). The other end of the return spring (57) is fixedly installed on the fixing block (55). The pawl (56) engages with the ratchet (54), and the pawl (56) can only rotate downwards.

3. The battery frame multi-field coupling performance test bench for multi-condition loads as described in claim 2, characterized in that, A first rack (523) is fixedly installed on the connecting frame (522), and a second rack (524) is fixedly installed on the inner side of the collar (521). The bracket (4) is symmetrically equipped with a drive gear (525) on the side near the collar (521).

4. The battery frame multi-field coupling performance test bench for multi-condition loads as described in claim 3, characterized in that, A limiting gear (526) is coaxially fixed on the drive gear (525), and a locking block (527) corresponding to the position of the limiting gear (526) is slidably provided on one side of the bracket (4), and a compression spring (528) for pushing the locking block (527) is fixedly provided on the side of the bracket (4) near the locking block (527). The inner side of the collar (521) is fixedly provided with a protrusion (529) corresponding to the position of the locking block (527). The protrusion (529) has a corresponding slot at the position corresponding to the first rack (523) and the second rack (524).

5. The battery frame multi-field coupling performance test bench for multi-condition loads as described in claim 2, characterized in that, The fixing ring (51) and the collar (521) are fixed together by detachable screws; The bracket (4) is fixedly connected to the outer side of the fixing ring (51) by a detachable screw; The connecting shaft (53) is divided into two sections, and the two sections are fixedly connected by detachable screws; A detachable connecting rod (58) is provided between the connecting shaft (53) and the collar (521).

6. The battery frame multi-field coupling performance test bench for multi-condition loads as described in claim 3, characterized in that, The clamping assembly (6) includes a support plate (61) slidably disposed inside the bracket (4), and a transmission component (62) for driving the support plate (61) to slide is provided between the support plate (61) and the side wall of the bracket (4).

7. The battery frame multi-field coupling performance test bench for multi-condition loads as described in claim 6, characterized in that, The transmission component (62) includes a first bevel gear (621) that is coaxially fixedly connected to the drive gear (525). A second bevel gear (622) is meshed on the first bevel gear (621). Both the first bevel gear (621) and the second bevel gear (622) are rotatably mounted on the side of the bracket (4) near the support plate (61). A screw (623) is fixedly installed on the second bevel gear (622), and a slider (624) is threadedly connected to the outer side of the screw (623). A connecting block (625) is fixedly provided on the side of the support plate (61) near the slider (624). One end of the connecting block (625) is slidably disposed inside the slider (624), and a support spring (626) is symmetrically fixedly provided on the lower side of the connecting block (625). The bottom end of the support spring (626) is fixedly connected to the slider (624).

8. The battery frame multi-field coupling performance test bench for multi-condition loads as described in claim 7, characterized in that, The top of the screw (623) extends out of the top of the slider (624), and a vertical rod (627) is slidably inserted into the upper side of the screw (623). The vertical rod (627) is rotatably disposed on one side of the support plate (61). A third bevel gear (628) is fixedly installed on the upper side of the vertical rod (627), and a fourth bevel gear (629) is meshed on the third bevel gear (628). The fourth bevel gear (629) is rotatably installed on one side of the support plate (61). The support plate (61) is symmetrically provided with clamping blocks (64) on the side away from the transmission member (62), wherein a connecting member (63) for driving the clamping block (64) to slide is provided between the clamping block (64) located on the upper side and the fourth bevel gear (629).

9. The battery frame multi-field coupling performance test bench for multi-condition loads as described in claim 8, characterized in that, The connector (63) includes a turntable (631) rotatably disposed on one side of the support plate (61), and the turntable (631) is coaxially and fixedly connected to the fourth bevel gear (629); A protruding rod (632) is fixedly provided on the side of the turntable (631) near the clamping block (64), and a sliding rod (633) is sleeved on the protruding rod (632). The other end of the slide rod (633) is fixedly provided with a limiting block (634), and one side of the support plate (61) is fixedly provided with a slide groove (635) for limiting the limiting block (634). One end of the limiting block (634) is slidably provided in the slide groove (635), and the other end of the limiting block (634) is fixedly connected to the clamping block (64) located on the upper side. The support plate (61) is symmetrically fixed with fixing grooves (65) on one side near the clamping block (64), and the two fixing grooves (65) are respectively located on both sides of the clamping block (64). The fixing groove (65) has two toothed blocks (66) symmetrically slidingly arranged inside, and one end of the two toothed blocks (66) is fixedly connected to the ends of the two clamping blocks (64) located on the upper and lower sides respectively; A transmission gear (67) is provided between the two tooth blocks (66) and meshes with the two tooth blocks (66), and the transmission gear (67) is rotatably disposed in the fixed groove (65).

10. The battery frame multi-field coupling performance test bench for multi-condition loads as described in claim 6, characterized in that, The spray assembly (7) includes a saline tank (71) fixedly installed on the upper side of the test chamber (1), and a spray head (72) fixedly installed on the top of the inner side of the test chamber (1). A brine pump (73) is fixedly installed between the brine tank (71) and the spray head (72), and the outlet and inlet of the brine pump (73) are respectively fixedly connected to the spray head (72) and the brine tank (71) by pipes; A return pipe (74) communicating with the inside of the test chamber (1) is fixedly installed on one side of the salt water tank (71). The inlet of the return pipe (74) is located at the lowest point of the upper layer inside the test chamber (1).

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