New energy automobile battery box compression resistance detection device

Abstract

The invention relates to the technical field of new energy automobile battery box detection, in particular to a new energy automobile battery box compression resistance detection device which comprises a battery box body, a shell bottom testing mechanism arranged outside the battery box body, a shell top pressurizing mechanism arranged over the shell bottom testing mechanism and a control mechanism installed on the shell bottom testing mechanism. And the resonance detection mechanism is arranged in the shell bottom testing mechanism. The shell bottom testing mechanism and the shell top pressurizing mechanism are arranged to serve as an automobile chassis to be simulated, the battery box main body is fixed in the port of the shell bottom testing mechanism, the battery box main body is closed with the shell top pressurizing mechanism and the shell bottom testing mechanism, and the battery box main body separates the inner cavity of the closed device; therefore, the resonance detection mechanism can detect the real compressive strength of the battery box main body in the simulated sealed environment, and meanwhile, the vibration frequency of the resonance detection mechanism is adjusted to simulate the bumpy state of the automobile, so that the real compressive strength of the battery box during the driving period of the automobile can be simulated for testing.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle battery box detection technology, and in particular to a new energy vehicle battery box compression detection device. Background Art

[0002] Compressive testing of new energy vehicle battery packs primarily involves pressure testing and ultimate compression testing. The material selection for a battery pack plays a crucial role in its resistance. Battery packs made from high-quality materials can effectively reduce battery pack weight, increase energy density, and extend driving range. They also offer excellent thermal insulation, higher strength, and stiffness, better protecting the battery and passengers in the event of a collision.

[0003] At present, the difficulty of compressive testing of new energy battery boxes is increased by the volume of the battery boxes, and the testing steps are relatively complicated. Conventional testing requires the battery box to be independently fixed on the test platform. This test can only test the compressive strength of the battery box material, but this test method cannot simulate the actual compressive performance of the battery box after it is fixed on the car chassis. Especially when the car is driving on bumpy roads, the vibration of the car body radiates to the battery box. Under the interference of multiple factors such as ambient temperature, car body temperature and air pressure, the compressive ability and air tightness of the battery box will also change accordingly.

[0004] In view of this, a new energy vehicle battery box compression detection device was designed to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] To this end, the technical solution adopted in the present invention is: A new energy vehicle battery box pressure resistance detection device includes a battery box body, a shell bottom testing mechanism arranged outside the battery box body, a shell top pressurizing mechanism arranged directly above the shell bottom testing mechanism, a control mechanism installed on the shell bottom testing mechanism, a resonance detection mechanism arranged in the shell bottom testing mechanism, and a hydraulic detector installed on the shell bottom testing mechanism, and the shell top pressurizing mechanism is installed on the control mechanism; the shell bottom testing mechanism includes a bottom cover, two anti-seepage plates installed at the bottom of the bottom cover, a sealing bottom plate fixedly installed at the bottom end of the bottom cover, two inner pads installed on the inner wall of the bottom cover, a load-bearing pad fixedly installed outside the two inner pads, and two main blocking pads and two auxiliary blocking pads arranged inside the load-bearing pads, and a first sealing strip is installed at the top of the bottom cover; the resonance detection mechanism includes a slide plate movably installed inside the two anti-seepage plates and extending to the outside of the bottom cover, a striker movably installed inside the slide plate, and a resonance plate fixedly installed at the top of the striker; the shell top pressurizing mechanism includes a top cover arranged at the top of the bottom cover, a top plate movably installed inside the top cover, and two second sealing strips installed outside the top plate, and the top plate is used to compress the air in the inner cavity of the top cover after sealing.

[0007] In a preferred embodiment, the present invention can be further configured as follows: the shell bottom testing mechanism further includes a bottom bracket fixedly mounted on the bottom of the sealing bottom plate, a liquid inlet pipe and a flow guide pipe fixedly mounted on the outer wall of the bottom cover, and a hydraulic pressure detector fixedly mounted on the flow guide pipe, and the hydraulic pressure detector is used to detect the hydraulic pressure in the inner cavity of the sealed bottom cover; A sliding groove is provided in the middle of the sealing bottom plate, and two telescopic rods are fixedly installed at the bottom of the sealing bottom plate. The telescopic rods are composed of a main tube and a sub-rod, and horizontal racks are fixedly installed at the bottom ends of the two sub-rods; The resonance detection mechanism also includes two second locking bolts mounted on the bottom of the slide, a support plate arranged outside the two second locking bolts and parallel to the slide, a chassis mounted on the bottom of the support plate, a motor fixedly mounted in the chassis, and a gear fixedly mounted on a transmission shaft in the motor; A first hydraulic component, an end head mounted on the first hydraulic component, and a traction frame movably mounted on the end head are installed in the bottom bracket, and the other end of the traction frame is movably mounted on the rack.

[0008] In a preferred example, the present invention can be further configured as follows: the shell bottom testing mechanism further includes two beams fixedly installed in the two inner pads and symmetrically distributed; The resonance detection mechanism also includes two pads mounted on the bottom of the support plate, a guide rod mounted inside the two pads, a cantilever movably mounted outside the guide rod, a pull rod movably mounted on the bottom end of the cantilever, and an eccentric wheel movably mounted on the other end of the pull rod, and the top end of the cantilever movably mounted on the striker; A circular gasket is provided at the bottom of the striker, and a first spring bearing pressure on the slide is fixedly mounted on the circular gasket; The eccentric wheel disc is fixedly mounted on the outer end of the transmission shaft in the motor.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the shell bottom testing mechanism further includes four first clamps and two second clamps, and the first clamps and the second clamps are fixedly mounted on the top of the load-bearing pad; The main blocking gasket and the auxiliary blocking gasket are respectively fixed to the first clamp and the second clamp by bolts; A plurality of first locking bolts are installed on the top of the load-bearing pad, and two first locking bolts form a group, and a gasket for pressing the battery box body is arranged on the outside of a group of first locking bolts.

[0010] In a preferred example, the present invention can be further configured as follows: the resonance detection mechanism also includes two legs movably mounted on the outside of the two beams, a stabilizing plate movably mounted on the outside of the striker, and the two legs are inserted into the two ends of the stabilizing plate and two third locking bolts are inserted into the inside of the stabilizing plate and fixed in the two legs.

[0011] In a preferred example, the present invention may be further configured as follows: two clamps are fixedly installed on the outer wall of the bottom cover; The control mechanism includes two fourth locking bolts and a second hydraulic component fixedly installed in the two clamps, a bottom clamping seat and a top clamping seat are provided on the hydraulic sub-rod in the second hydraulic component, and the bottom clamping seat is located directly below the top clamping seat, and the two fourth locking bolts are respectively installed in the bottom clamping seat and the top clamping seat; The control mechanism further comprises a fixing block fixedly mounted on the top cover and a second spring adapted to bear pressure between the top clamping seat and the fixing block.

[0012] In a preferred embodiment, the present invention can be further configured as follows: the shell top pressurizing mechanism further includes a load-bearing frame fixedly mounted on the top of the top plate, and the other end of the load-bearing frame is mounted on the top end of the hydraulic sub-rod in the second hydraulic component; A limiting groove is provided at the bottom end of the top cover, and two grooves are provided at the bottom of the top plate, and electric heating pipes are installed in the two grooves.

[0013] In a preferred example, the present invention can be further configured as follows: a ball valve is movably installed inside the liquid inlet pipe, and the liquid inlet pipe is used to provide a liquid injection channel for the inner cavity of the sealed rear bottom cover.

[0014] In a preferred example, the present invention can be further configured as follows: the slide plate is in a U-shaped structure as a whole, and rubber pads are fixedly installed on the side walls of the slide plate facing the inner ends of the two anti-seepage plates.

[0015] In a preferred example, the present invention can be further configured as follows: the cantilever is welded by two extended pads and two end columns, and a slideway is provided inside the extended pad, and the guide rod is adapted to pass through the slideway.

[0016] By adopting the above technical solution, the beneficial effects achieved by the present invention are as follows: 1. The present invention sets a shell bottom testing mechanism and a shell top pressurizing mechanism as the automobile chassis to be simulated, and fixes the battery box body in the port of the shell bottom testing mechanism. As the shell top pressurizing mechanism and the shell bottom testing mechanism are closed, and the battery box body separates the inner cavity of the closed device, the resonance detection mechanism can detect the actual compressive performance of the battery box body in a simulated sealed environment. At the same time, the vibration frequency of the resonance detection mechanism is adjusted to simulate the bumpy state of the automobile, thereby simulating the actual compressive strength of the battery box during driving for testing.

[0017] 2. The present invention fixes the battery box body on the top of the shell bottom test mechanism and uses two main sealing pads and two auxiliary sealing pads to seal the gap of the battery box body. As the solution to be tested enters the inner cavity of the shell bottom test mechanism and submerges the bottom of the battery box body, the resonance plate that taps at high frequency in the solution to be tested will slide and tap the bottom of the battery box body. At this time, in the simulated automobile chassis environment, the battery box body can be subjected to pressure resistance testing in the selected interfering liquid medium.

[0018] 3. The present invention controls the free opening and closing of the top cover and the bottom cover through a control mechanism. When the top plate pushed by the load-bearing frame and the two heat-releasing electric heating tubes descend at a uniform speed, the heated and compressed air will directly radiate to the top of the battery box. At this time, the continuously pressurized and heat-releasing compressed air can perform a joint test on the airtightness of the battery box body that is struck. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the detection of the present invention; Figure 2 It is an explosion diagram of the present invention; Figure 3 Schematic diagram of the explosion of the shell top pressurizing mechanism of the present invention; Figure 4 It is an explosion diagram of the present invention; Figure 5 Schematic diagram of the explosion of the control mechanism of the present invention; Figure 6 It is a partial schematic diagram of the present invention; Figure 7 Schematic diagram of the explosion of the shell bottom testing mechanism of the present invention; Figure 8 For the present invention Figure 7 Explosion diagram of Figure 9 For the present invention Figure 8 A magnified schematic diagram of point A in the middle; Figure 10 Schematic diagram of the resonance detection mechanism of the present invention; Figure 11 For the present invention Figure 10 A magnified schematic diagram of point B in the middle; Figure 12 For the present invention Figure 10 Schematic diagram of a local explosion.

[0020] Reference numerals: 100, shell bottom test mechanism; 110, bottom cover; 1101, anti-seepage plate; 1102, sealing bottom plate; 1103, load-bearing pad; 1104, first clamp; 1105, second clamp; 1106, primary blocking pad; 1107, secondary blocking pad; 1108, first locking bolt; 1109, gasket; 120, telescopic rod; 130, rack; 140, liquid inlet pipe; 150, flow guide pipe; 160, inner pad; 170, beam; 180, first sealing strip; 200, resonance detection mechanism; 210, slide plate; 2101, second locking bolt; 2102, support plate; 2103, footrest; 2104, guide rod; 220, cantilever; 230, pull rod; 240, striker; 2401, first spring; 250, chassis; 2501, motor; 2502, gear; 2503, eccentric wheel; 260, bottom bracket; 2601, first hydraulic component; 2602, end; 2603, traction frame; 270, stabilizing plate; 2701, third locking bolt; 2702, support leg; 2703, resonance plate; 300, hydraulic detector; 400, battery box body; 500, control mechanism; 510, second hydraulic component; 520, fixing block; 530, bottom clamping seat; 540, top clamping seat; 550, fourth locking bolt; 560, second spring; 600, shell top pressurizing mechanism; 610, load-bearing frame; 620, top plate; 630, second sealing strip; 640, electric heating pipe; 650, top cover; 6501, limiting groove. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0022] It is to be understood that these descriptions are illustrative only and are not intended to limit the scope of the invention.

[0023] The following describes a new energy vehicle battery box compression detection device provided by some embodiments of the present invention in conjunction with the accompanying drawings.

[0024] Example 1: Combine Figures 1 to 12 As shown, the present invention provides a new energy vehicle battery box pressure resistance detection device, including a battery box body 400, a shell bottom testing mechanism 100 arranged outside the battery box body 400, a shell top pressurizing mechanism 600 arranged just above the shell bottom testing mechanism 100, a control mechanism 500 installed on the shell bottom testing mechanism 100, a resonance detection mechanism 200 arranged in the shell bottom testing mechanism 100, and a hydraulic detector 300 installed on the shell bottom testing mechanism 100, and the shell top pressurizing mechanism 600 is installed on the control mechanism 500. On the shell bottom testing mechanism 100, it is used to inject the solution medium to be tested, and perform corrosion test on the bottom of the battery box body 400. The resonance detection mechanism 200 is used to perform resonance knocking test on the battery box body 400 in the shell bottom testing mechanism 100. The hydraulic detector 300 is used to detect the air tightness of the battery box body 400 after knocking. The control mechanism 500 is used to provide kinetic energy for the opening and closing of the shell top pressurization mechanism 600. The shell top pressurization mechanism 600 is used to perform heat radiation and air pressurization tests on the top of the battery box body 400.

[0025] The shell bottom testing mechanism 100 includes a bottom cover 110, four first chucks 1104 and two second chucks 1105, two anti-seepage plates 1101 installed at the bottom of the bottom cover 110, a sealing bottom plate 1102 fixedly installed at the bottom end of the bottom cover 110, two inner pads 160 installed on the inner wall of the bottom cover 110, a load-bearing pad 1103 fixedly installed on the outside of the two inner pads 160, two main blocking pads 1106 and two auxiliary blocking pads 1107 arranged on the inner side of the load-bearing pads 1103, and a first sealing strip 180 is installed at the top of the bottom cover 110, a bottom support 260 fixedly installed at the bottom of the sealing bottom plate 1102, a liquid inlet pipe 140 and a flow guide pipe 150 fixedly installed on the outer wall of the bottom cover 110, and a hydraulic pressure detector 300 fixedly installed on the flow guide pipe 150, and the hydraulic pressure detector 300 is used to detect the hydraulic pressure in the inner cavity of the bottom cover 110 after sealing; A ball valve is movably installed inside the liquid inlet pipe 140, and the liquid inlet pipe 140 is used to provide a liquid injection channel for the inner cavity of the sealed rear bottom cover 110; A sliding groove is provided in the middle of the sealing bottom plate 1102, and two telescopic rods 120 are fixedly installed at the bottom of the sealing bottom plate 1102. The telescopic rods 120 are composed of a main tube and a sub-rod, and the bottom ends of the two sub-rods are fixedly installed with horizontal racks 130; The first clamp 1104 and the second clamp 1105 are fixedly mounted on the top of the load-bearing pad 1103; The main blocking gasket 1106 and the auxiliary blocking gasket 1107 are fixed to the first clamp 1104 and the second clamp 1105 respectively by bolts; A plurality of first locking bolts 1108 are installed on the top of the load-bearing pad 1103 , and two first locking bolts 1108 form a group. A gasket 1109 is provided outside a group of first locking bolts 1108 to press the battery box body 400 ; Two second locking bolts 2101 mounted on the bottom of the slide 210, a support plate 2102 disposed outside the two second locking bolts 2101 and parallel to the slide 210, a chassis 250 mounted on the bottom of the support plate 2102, a motor 2501 fixedly mounted in the chassis 250, and a gear 2502 fixedly mounted on a transmission shaft in the motor 2501; The bottom bracket 260 is provided with a first hydraulic component 2601, an end head 2602 mounted on the first hydraulic component 2601, and a traction frame 2603 movably mounted on the end head 2602, and the other end of the traction frame 2603 is movably mounted on the rack 130; The resonance detection mechanism 200 includes a slide plate 210 movably mounted on the inner sides of the two anti-seepage plates 1101 and extending to the outside of the bottom cover 110 , a striker 240 movably mounted on the inner side of the slide plate 210 , and a resonance plate 2703 fixedly mounted on the top of the striker 240 ; The slide plate 210 is in a U-shaped structure as a whole, and a rubber pad is fixedly installed on the side wall of the slide plate 210 facing the inner end of the two anti-seepage plates 1101; The cantilever 220 is welded by two extended pads and two end columns, and a slideway is provided inside the extended pad, and the guide rod 2104 is adapted to pass through the slideway; The shell top pressurizing mechanism 600 includes a top cover 650 arranged at the top of the bottom cover 110, a top plate 620 movably installed in the top cover 650, and two second sealing strips 630 installed outside the top plate 620, and the top plate 620 is used to compress and seal the air in the inner cavity of the top cover 650.

[0026] The battery box body 400 placed on the load-bearing pad 1103 is fixed using multiple first locking bolts 1108 and multiple washers 1109. Then, two main blocking pads 1106 and two auxiliary blocking pads 1107 are fixed to the first clamp 1104 and the second clamp 1105 respectively using bolts until the two main blocking pads 1106 and the two auxiliary blocking pads 1107 seal the gap between the load-bearing pad 1103 and the battery box body 400. At this point, the bottom of the battery box body 400 extending into the inner cavity of the bottom cover 110 is in a sealed environment. After the top plate 620 and the top cover 650 are closed on the top of the bottom cover 110, the top of the battery box body 400 will be in another sealed cavity; An external hose is connected to the liquid inlet pipe 140, and the selected test solution is transferred from the liquid inlet pipe 140 to the inner cavity of the bottom cover 110 until the test solution completely submerges the bottom of the battery box body 400. Then, the motor 2501 is started, and the drive shaft in the motor 2501 cooperates with the eccentric wheel 2503 to drive the pull rod 230 to perform eccentric motion, and the pull rod 230 drives the cantilever 220 and the striker 240 to reciprocate. Finally, the resonance plate 2703 fixed on the top of the striker 240 will reciprocate along the inside of the slide plate 210. Finally, the resonance plate 2703 will perform high-frequency impact on the bottom of the battery box body 400 in the solution medium. At this time, the battery box body 400 can undergo a compression test in a simulated automotive environment and under the erosion of the solution medium; When it is necessary to simulate a car driving on an inclined road, the first hydraulic component 2601 is operated. At this time, the hydraulic sub-rod in the first hydraulic component 2601 cooperates with the end 2602 to pull the traction frame 2603, and finally the rack 130 is adapted to engage with the gear 2502, and finally the skateboard 210 as a whole moves laterally along the bottom of the rack 130. At this time, the resonance plate 2703 can slide and knock on the bottom of the battery box body 400 to simulate the compressive performance of the battery box body 400 after deviating from the center.

[0027] Example 2: Combine Figures 6 to 12 As shown, based on Example 1, the shell bottom testing mechanism 100 further includes two beams 170 fixedly installed in the two inner pads 160 and symmetrically distributed; The resonance detection mechanism 200 also includes two pads 2103 installed at the bottom of the support plate 2102, a guide rod 2104 installed in the two pads 2103, a cantilever 220 movably installed on the outside of the guide rod 2104, a pull rod 230 movably installed at the bottom end of the cantilever 220, an eccentric wheel 2503 movably installed at the other end of the pull rod 230, two legs 2702 movably installed on the outside of the two beams 170, a stabilizing plate 270 movably installed on the outside of the striker 240, and the two legs 2702 are inserted into the two ends of the stabilizing plate 270 and two third locking bolts 2701 are inserted into the inside of the stabilizing plate 270 and fixed in the two legs 2702, and the top end of the cantilever 220 is movably mounted on the striker 240; A circular gasket is provided at the bottom of the striker 240, and a first spring 2401 is fixedly mounted on the circular gasket to bear pressure on the slide plate 210; The eccentric wheel 2503 is fixedly mounted on the outer end of the transmission shaft in the motor 2501; Preferably, the outer walls of the two beams 170 are provided with a ceramic glaze layer, and the hole wall at the top of the leg 2702 is a smooth coating, and an anti-seepage rubber ring is fixedly installed in the vertical hole in the middle of the slide plate 210; The resonance plate 2703 is provided with evenly distributed hydrophobic grooves for reducing the resistance of the resonance plate 2703 when it rises and falls in the solution.

[0028] In addition, two symmetrically distributed rectangular slots are opened at the bottom of the sealing bottom plate 1102, and the slide plate 210 is movably installed in the two rectangular slots.

[0029] Example 3: Combine Figures 1 to 5 As shown, in the above embodiment, two clamps are fixedly mounted on the outer wall of the bottom cover 110; The control mechanism 500 includes two fourth locking bolts 550 and a second hydraulic component 510 fixedly installed in the two clamps. A bottom clamping seat 530 and a top clamping seat 540 are provided on the hydraulic sub-rod in the second hydraulic component 510, with the bottom clamping seat 530 located directly below the top clamping seat 540. The two fourth locking bolts 550 are respectively installed in the bottom clamping seat 530 and the top clamping seat 540. The control mechanism 500 further includes a fixing block 520 fixedly mounted on the top cover 650 and a second spring 560 adapted to bear pressure between the top clamping seat 540 and the fixing block 520; The shell top pressurizing mechanism 600 further includes a load-bearing frame 610 fixedly mounted on the top of the top plate 620 , and the other end of the load-bearing frame 610 is mounted on the top end of the hydraulic sub-rod in the second hydraulic component 510 ; A limiting groove 6501 is provided at the bottom of the top cover 650 , and two grooves are provided at the bottom of the top plate 620 , in which electric heating pipes 640 are installed.

[0030] Preferably, the second hydraulic component 510 is fixed in the two clamps by welding, and the two fourth locking bolts 550 installed in the bottom clamping seat 530 and the top clamping seat 540 are used to press on the hydraulic sub-rod in the second hydraulic component 510, and the inner walls of the bottom clamping seat 530 and the top clamping seat 540 are fixedly installed with silicone pads, and the fixing block 520 is welded to the outer wall of the top cover 650; The top of the electric heating tube 640 is equipped with two poles, which are adapted to penetrate the outside of the top plate 620. When the poles are connected to the external wires, the two electric heating tubes 640 will be energized and heat the air in the inner cavity of the top cover 650. Specifically, as the hydraulic sub-rod in the second hydraulic component 510 continues to descend, the load-bearing frame 610 fixed at the top of the hydraulic sub-rod will push the top plate 620 to continue to descend along the inner cavity of the top cover 650. Finally, the compressed air in the inner cavity of the top cover 650 will perform a pressurization test on the top of the battery box body 400. Once the battery box body 400 is hit and has an airtightness problem, the solution inside the bottom cover 110 will be affected by the air pressure and flow into the guide tube 150. Finally, the hydraulic detector 300 can detect the pressurized solution.

[0031] The working principle and usage process of the present invention are as follows: the second hydraulic component 510 is preliminarily operated until the hydraulic sub-rod in the second hydraulic component 510 extends outward, and then the bottom clamping seat 530 installed on the hydraulic sub-rod in the second hydraulic component 510 pushes the fixing block 520 and the top cover 650 upward. At this time, the top cover 650 and the bottom cover 110 expand to the maximum expansion state; Then, the battery box body 400 is movably installed on the top of the load-bearing pad 1103, and the battery box body 400 is fixed on the load-bearing pad 1103 by using multiple first locking bolts 1108 and multiple gaskets 1109. Then, the two main blocking pads 1106 and the two auxiliary blocking pads 1107 are fixed in the gap inside the load-bearing pad 1103 by using multiple first clamps 1104 and two second clamps 1105, until the two fixed main blocking pads 1106 and the two auxiliary blocking pads 1107 cooperate with the battery box body 400 to seal the gap inside the load-bearing pad 1103. After being blocked by the two main blocking pads 1106 and the two auxiliary blocking pads 1107, the battery box body 400 and the load-bearing pad 1103 will separate the two cavities of the top cover 650 and the bottom cover 110. Then, the external hose is fixed to the liquid inlet pipe 140, and the valve inside the liquid inlet pipe 140 is opened. As the testing solution continues to flow through the liquid inlet pipe 140 into the inner cavity formed by the bottom cover 110, the two anti-seepage plates 1101, and the slide plate 210, until the solution is level with the bottom of the battery box body 400. Then, the valve is closed, and the hydraulic pressure detected by the hydraulic pressure detector 300 installed on the flow guide pipe 150 is the initial pressure of the constant solution. Then, the second hydraulic component 510 is operated until the hydraulic sub-rod in the second hydraulic component 510 contracts, and the top cover 650 is quickly closed on the top of the bottom cover 110 due to the thrust. As the hydraulic sub-rod in the second hydraulic component 510 continues to contract, the load-bearing frame 610 and the top plate 620 fixed at the top of the hydraulic sub-rod at this location will continue to descend along the inner cavity of the top cover 650. Finally, the top plate 620 cooperates with the two second sealing strips 630 to compress the air in the inner cavity of the top cover 650. After the two electric heating tubes 640 are energized and release heat, the heated air is compressed and directly acts on the top of the battery box body 400. Once there is an airtightness problem on the surface of the battery box body 400, the solution at the bottom of the battery box body 400 will be visually detected through the hydraulic detector 300 after being pressurized. When the heated and compressed air does not pass through the battery box body 400 and affect the solution, the motor 2501 is then started. As the shaft inside the motor 2501 cooperates with the eccentric wheel 2503 to drive the pull rod 230 and the cantilever 220 to reciprocate and extend, the striker 240, with the auxiliary support of the first spring 2401, drives the resonant plate 2703 to perform a high-frequency impact test on the bottom of the battery box body 400. At this time, the battery box body 400 can simulate the vibration resistance performance of being fixed to the chassis of an automobile and in actual operating conditions. As the first hydraulic component 2601 operates, the hydraulic sub-rod in the first hydraulic component 2601 cooperates with the end 2602 to drive the traction frame 2603 to extend, and finally the other end of the traction frame 2603 will pull the rack 130 down toward the gear 2502 until the teeth of the gear 2502 are matched with the teeth at the bottom of the rack 130, and finally the resonance plate 2703 will slide and knock along the bottom of the battery box body 400. This process can simulate the resistance of the battery box body 400 to resonant knocking due to the change of center of gravity when a car is driving on an inclined road.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A new energy vehicle battery box compression testing device, comprising a battery box body (400), characterized in that: The battery box further comprises a shell bottom testing mechanism (100) arranged outside the battery box body (400), a shell top pressurizing mechanism (600) arranged directly above the shell bottom testing mechanism (100), a control mechanism (500) mounted on the shell bottom testing mechanism (100), a resonance detection mechanism (200) arranged inside the shell bottom testing mechanism (100), and a hydraulic pressure detector (300) mounted on the shell bottom testing mechanism (100), wherein the shell top pressurizing mechanism (600) is mounted on the control mechanism (500); The shell bottom testing mechanism (100) comprises a bottom cover (110), two anti-seepage plates (1101) installed at the bottom of the bottom cover (110), a sealing bottom plate (1102) fixedly installed at the bottom end of the bottom cover (110), two inner pads (160) installed on the inner wall of the bottom cover (110), a load-bearing pad (1103) fixedly installed outside the two inner pads (160), and two main blocking pads (1106) and two auxiliary blocking pads (1107) arranged inside the load-bearing pads (1103), and a first sealing strip (180) is installed at the top end of the bottom cover (110); The resonance detection mechanism (200) comprises a slide plate (210) movably mounted on the inner sides of the two anti-seepage plates (1101) and extending to the outside of the bottom cover (110), a striker (240) movably mounted inside the slide plate (210), and a resonance plate (2703) fixedly mounted on the top of the striker (240); The shell top pressurizing mechanism (600) comprises a top cover (650) arranged at the top end of the bottom cover (110), a top plate (620) movably mounted inside the top cover (650), and two second sealing strips (630) mounted outside the top plate (620), wherein the top plate (620) is used to compress and seal the air in the inner cavity of the top cover (650).

2. A new energy vehicle battery box compression testing device according to claim 1, characterized in that: The shell bottom testing mechanism (100) further comprises a bottom support (260) fixedly mounted on the bottom of the sealing bottom plate (1102), a liquid inlet pipe (140) and a flow guide pipe (150) fixedly mounted on the outer wall of the bottom cover (110), and a hydraulic pressure detector (300) fixedly mounted on the flow guide pipe (150), and the hydraulic pressure detector (300) is used to detect the hydraulic pressure in the inner cavity of the sealed bottom cover (110); A sliding groove is provided in the middle of the sealing bottom plate (1102), and two telescopic rods (120) are fixedly mounted on the bottom of the sealing bottom plate (1102). The telescopic rods (120) are composed of a main tube and a sub-rod, and horizontal racks (130) are fixedly mounted on the bottom ends of the two sub-rods. The resonance detection mechanism (200) further comprises two second locking bolts (2101) mounted on the bottom of the slide (210), a support plate (2102) arranged outside the two second locking bolts (2101) and parallel to the slide (210), a chassis (250) mounted on the bottom of the support plate (2102), a motor (2501) fixedly mounted in the chassis (250), and a gear (2502) fixedly mounted on a transmission shaft in the motor (2501); The base (260) is provided with a first hydraulic component (2601), an end head (2602) mounted on the first hydraulic component (2601), and a traction frame (2603) movably mounted on the end head (2602), and the other end of the traction frame (2603) is movably mounted on the rack (130).

3. A new energy vehicle battery box compression testing device according to claim 1, characterized in that: The shell bottom testing mechanism (100) further comprises two beams (170) fixedly mounted in the two inner pads (160) and symmetrically distributed; The resonance detection mechanism (200) further includes two pads (2103) mounted on the bottom of the support plate (2102), a guide rod (2104) mounted inside the two pads (2103), a cantilever (220) movably mounted outside the guide rod (2104), a pull rod (230) movably mounted at the bottom end of the cantilever (220), and an eccentric wheel (2503) movably mounted at the other end of the pull rod (230), and the top end of the cantilever (220) is movably mounted on the striker (240); A circular gasket is provided at the bottom of the striker (240), and a first spring (2401) bearing pressure on the slide plate (210) is fixedly mounted on the circular gasket; The eccentric wheel disc (2503) is fixedly mounted on the outer end of the transmission shaft in the motor (2501).

4. A new energy vehicle battery box compression testing device according to claim 1, characterized in that: The shell bottom testing mechanism (100) further comprises four first clamps (1104) and two second clamps (1105), and the first clamps (1104) and the second clamps (1105) are fixedly mounted on the top of the load-bearing pad (1103); The main blocking gasket (1106) and the auxiliary blocking gasket (1107) are respectively fixed to the first clamp (1104) and the second clamp (1105) by bolts; A plurality of first locking bolts (1108) are installed on the top of the load-bearing pad (1103), and two first locking bolts (1108) form a group, and a gasket (1109) for pressing the battery box body (400) is provided on the outside of a group of first locking bolts (1108).

5. The new energy vehicle battery box compression testing device according to claim 1, characterized in that: The resonance detection mechanism (200) further comprises two legs (2702) movably mounted on the outside of the two beams (170), a stabilizing plate (270) movably mounted on the outside of the striker (240), the two legs (2702) being plugged into the two ends of the stabilizing plate (270), and two third locking bolts (2701) being plugged into the inside of the stabilizing plate (270) and fixed in the two legs (2702).

6. A new energy vehicle battery box compression testing device according to claim 1, characterized in that: Two clamps are fixedly mounted on the outer wall of the bottom cover (110); The control mechanism (500) includes two fourth locking bolts (550) and a second hydraulic component (510) fixedly installed in two clamps, a bottom clamping seat (530) and a top clamping seat (540) are provided on the hydraulic sub-rod in the second hydraulic component (510), and the bottom clamping seat (530) is located directly below the top clamping seat (540), and the two fourth locking bolts (550) are respectively installed in the bottom clamping seat (530) and the top clamping seat (540); The control mechanism (500) further comprises a fixed block (520) fixedly mounted on the top cover (650) and a second spring (560) adapted to bear pressure between the top clamping seat (540) and the fixed block (520).

7. The new energy vehicle battery box compression testing device according to claim 1, characterized in that: The shell top pressurizing mechanism (600) further comprises a load-bearing frame (610) fixedly mounted on the top of the top plate (620), and the other end of the load-bearing frame (610) is mounted on the top end of the hydraulic sub-rod in the second hydraulic component (510); A limiting groove (6501) is provided at the bottom end of the top cover (650), and two grooves are provided at the bottom of the top plate (620), and electric heating pipes (640) are installed in the two grooves.

8. The new energy vehicle battery box compression testing device according to claim 2, characterized in that: A ball valve is movably installed inside the liquid inlet pipe (140), and the liquid inlet pipe (140) is used to provide a liquid injection channel for the inner cavity of the sealed rear bottom cover (110).

9. The new energy vehicle battery box compression testing device according to claim 1, characterized in that: The slide plate (210) is of a U-shaped structure as a whole, and a rubber pad is fixedly mounted on the side wall of the slide plate (210) facing the inner ends of the two anti-seepage plates (1101).

10. A new energy vehicle battery box compression testing device according to claim 3, characterized in that: The cantilever (220) is formed by welding two extended pads and two end columns, and a slideway is provided inside the extended pad, and the guide rod (2104) is adapted to pass through the slideway.

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