A mobile power supply cell rapid detection device

Abstract

This invention belongs to the field of power supply electrical performance testing technology, specifically a rapid testing device for mobile power supply cells, including a testing platform; a slide rail is installed on the testing platform, a slide seat is slidably connected to the slide rail, a hydraulic cylinder is fixed on the top of the testing platform, the top of the slide seat is connected to the telescopic end of the hydraulic cylinder, an upper seat is connected to the bottom of the slide seat, and a lower seat is arranged below the upper seat; in this invention, from automatic material picking, transfer, vacuum sealing, insertion to temperature control, vibration excitation, gas analysis and vacuum maintenance, a high degree of automation of mobile power supply cell testing is achieved, significantly reducing manual intervention, improving testing efficiency and consistency, integrating vacuum environment, five-sided temperature control, adjustable vibration, controllable impact, and gas release analysis into one device, which can simulate multiple stress conditions such as low pressure, extreme temperature, and mechanical disturbance in the same device, comprehensively exposing potential defects of the cell and its assembly.

Description

Technical Field

[0001] This invention belongs to the field of power supply electrical performance testing technology, specifically a mobile power supply cell rapid testing device. Background Technology

[0002] During the manufacturing process of portable power banks, it is usually necessary to test their electrical performance parameters such as voltage and current, as well as the working status of the light-emitting components on the circuit board.

[0003] Existing technologies disclose several invention patents in the field of power supply electrical performance testing. Among them, invention patent CN201820820795.4 discloses a mobile power supply testing device, including a mounting bracket, a power supply positioning and fixing device, and a testing device. The testing device includes a test mounting base, a plug, a power supply tester, and a photoelectric sensor. The plug is used to engage and disengage with the interface and is fixed on the test mounting base. The power supply tester is used to detect the electrical performance parameters of the mobile power supply's charging and discharging. The power supply tester is electrically connected to the plug. The photoelectric sensor is used to sense the light emitted by the light-emitting component. Compared with existing technologies, this device can simultaneously test the interface of the mobile power supply and the light-emitting component on the circuit board, reducing labor intensity, effectively improving testing efficiency, and achieving high production capacity and efficiency. Currently, when testing battery cells, it is necessary to evaluate their charging and discharging performance under various temperature conditions to ensure the accuracy of the test results. At the same time, their performance under vibration and shock environments should also be tested to ensure the safety of battery operation.

[0004] Based on this, the present invention designs a mobile power bank cell rapid detection device to solve the above problems. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a rapid testing device for mobile power bank cells. This invention primarily addresses the current need to evaluate the charge-discharge performance of battery cells under various temperature conditions to ensure the accuracy of test results, and also to test their performance under vibration and shock environments to ensure battery safety.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a mobile power cell rapid testing device, including a testing platform; a slide rail is installed on the testing platform, a slide block is slidably connected on the slide rail, a hydraulic cylinder is fixed on the top of the testing platform, the top of the slide block is connected to the telescopic end of the hydraulic cylinder, an upper seat is connected to the bottom of the slide block, a lower seat is provided below the upper seat, the lower seat and the upper seat are fixedly connected by multiple bridging rods, and an isolation cover is connected to the bottom of the lower seat;

[0007] The testing platform is equipped with a base, and a feeding plate is connected to the top of the base. A feeding groove is opened on the top of the feeding plate. A conveyor line is arranged on the side of the testing platform. A feeding port is opened on the side of the conveyor line corresponding to the position of the feeding groove. A U-shaped plate is connected between the conveyor line and the feeding plate corresponding to the positions of the feeding groove and the feeding port. A combination port is opened on the other side of the conveyor line.

[0008] Preferably, the feeding trough is used to place the power bank body, and a USB connector is provided on the inner wall of the feeding trough corresponding to the position of the power bank body. A tester is installed on one side of the top of the base, and the other end of the USB connector is connected to the tester by a plug-in method. A sliding interface is also provided on the inner wall of the feeding trough corresponding to the power bank body. A housing is slidably connected in the sliding interface. A corner bracket is connected to the top of the housing. A linkage rod is rotatably connected to the inner side of the other end of the corner bracket. An adapter is rotatably connected to the other end of the linkage rod. The top end of the adapter is fixedly connected to the bottom of the lower base.

[0009] Preferably, multiple piston cylinders are engaged on the base at positions corresponding to the upper seat. Each piston cylinder has a piston rod slidably connected to its top, and a piston head is connected to the end of the piston rod. The piston head is slidably connected inside the piston cylinder, and a first spring is connected to the bottom of the piston head. The piston head forms an elastic support with the inner bottom wall of the piston cylinder through the first spring. Multiple piston cylinders located on the same side are connected by a first diversion pipe, and the first diversion pipe is connected to the interior of the isolation cover. A first solenoid valve is installed on each first diversion pipe.

[0010] Preferably, the feeding plate has a first interlayer inside, and a first fluid pipe and a second fluid pipe connected to the first interlayer are respectively opened at both ends of the feeding plate.

[0011] The casing has a second interlayer inside, and the two ends of the casing are respectively connected to a drainage pipe and a return pipe that communicate with the second interlayer. The other ends of the drainage pipe and the return pipe are both connected to the first interlayer.

[0012] Preferably, the inner bottom of the feeding trough is provided with a first groove, a sealing plate is engaged at the opening of the first groove, a plurality of anchor rods are slidably passed through the sealing plate, the bottom ends of the plurality of anchor rods are connected to the same linkage plate, and a transition shaft is rotatably connected to the side of the linkage plate.

[0013] The inner wall of the first groove is rotatably connected to a wheel axle, and a wheel disk is fixedly sleeved at the end of the wheel axle. An eccentric shaft is rotatably connected to the wheel disk at a position off-center from its center. A transmission sleeve is provided between the eccentric shaft and the wheel axle, and the transmission sleeve is used to transmit motion.

[0014] The other end of the axle extends to one side of the feed plate, and an impeller is fixedly sleeved at that end. A cover is connected around the impeller on the feed plate, and a first connector and a second connector are respectively connected in opposite directions along the tangential direction on the outer wall of the cover.

[0015] Preferably, one end of the transmission sleeve is rotatably connected to the eccentric shaft, the other end of the transmission sleeve is internally fitted with a transmission shaft, the end of the transmission shaft is rotatably connected to the adapter shaft, the other end of the transmission shaft is connected to a permanent magnet plate, a U-shaped plate located at the bottom of the permanent magnet plate is snapped onto the inner wall of the transmission sleeve, and an electromagnet is installed on the inner bottom of the transmission sleeve.

[0016] Preferably, the inner bottom of the feeding trough is provided with a second groove between the power supply body and the casing. A limiting plate is slidably connected in the second groove. A plurality of second springs are connected to the bottom of the limiting plate. The limiting plate forms an elastic support with the inner bottom of the second groove through the plurality of second springs. A slope is provided on the side of the limiting plate facing the casing.

[0017] Preferably, each of the sleeves is equipped with a sensing module, which is located above the piston head.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. In this invention, the automatic material handling, transfer, vacuum sealing, insertion into temperature control, vibration excitation, gas analysis and vacuum maintenance achieve a high degree of automation in the testing of mobile power cell, significantly reducing manual intervention and improving testing efficiency and consistency. It integrates vacuum environment, five-sided temperature control, adjustable vibration, controllable impact and gas release analysis, and can simulate multiple stress conditions such as low pressure, extreme temperature and mechanical disturbance in the same device to fully expose potential defects in the cell and its assembly.

[0020] 2. In this invention, the sealing, vacuum establishment, insertion and air compression energy storage are completed simultaneously by the downward drive of the same hydraulic cylinder, and the compressed air is used for vibration excitation. No additional air source or power unit is required, and the structure is simple and energy-efficient.

[0021] 3. In this invention, rapid and uniform temperature control on five sides is achieved through a split-flow double-layered flow channel, supporting switching between low temperature, high temperature, and thermal shock. The compressed air discharge speed is adjusted by the second solenoid valve, enabling adjustable vibration frequency and intensity. The anchor bolt impact force is steplessly adjusted by the repulsive force between the electromagnet and the permanent magnet plate to adapt to different testing requirements. Continuous evacuation maintains a vacuum, while real-time analysis of gas composition and release rate enables early anomaly identification. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a side view of the planar structure of the present invention;

[0025] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the invention after disassembly;

[0027] Figure 5 This is a structural schematic diagram of the invention from another perspective after it has been disassembled;

[0028] Figure 6 This is a schematic diagram of the structure of the second groove in this invention;

[0029] Figure 7 This is a schematic diagram of the impeller structure in this invention;

[0030] Figure 8 This is the present invention. Figure 3 A structural schematic diagram of the piston cylinder in cross-section;

[0031] Figure 9 This is the present invention. Figure 4 Schematic diagram of the middle sealing plate;

[0032] Figure 10 This is the present invention. Figure 7 Enlarged structural diagram at point A;

[0033] Figure 11 This is a schematic diagram of the transmission shaft in this invention.

[0034] In the diagram: 1. Testing table; 2. Slide; 3. Hydraulic cylinder; 4. Feeding plate; 5. Feeding trough; 6. Conveyor line; 7. Feeding port; 8. U-shaped plate; 9. Assembly port; 10. Base; 11. USB connector; 12. Tester; 13. Sliding interface; 14. Housing; 15. Bend frame; 16. Linkage rod; 17. Lower seat; 18. Adapter; 19. Bridging rod; 20. Upper seat; 21. Isolation cover; 22. Power bank body; 23. Piston cylinder; 24. Piston head; 25. Piston rod; 26. First spring; 27. Sensing module; 28. First shunt. 29. First solenoid valve; 30. First fluid pipe; 31. Second fluid pipe; 32. Drain pipe; 33. Return pipe; 34. First groove; 35. Sealing plate; 36. Anchor bolt; 37. Linkage plate; 38. Adapter shaft; 39. Transmission sleeve; 40. Eccentric shaft; 41. Wheel disc; 42. Wheel axle; 43. Cover; 44. First connector; 45. Second groove; 46. Limiting plate; 47. Slope; 48. Second spring; 49. Second connector; 50. Impeller; 51. Transmission shaft; 52. Permanent magnet plate; 53. Reverse plate; 54. Electromagnet; 55. Slide rail. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] like Figures 1 to 11 As shown, a mobile power bank cell rapid testing device includes a testing platform 1; a slide rail 55 is installed on the testing platform 1, a slide seat 2 is slidably connected on the slide rail 55, a hydraulic cylinder 3 is fixed on the top of the testing platform 1, the top of the slide seat 2 is connected to the telescopic end of the hydraulic cylinder 3, an upper seat 20 is connected to the bottom of the slide seat 2, a lower seat 17 is provided below the upper seat 20, the lower seat 17 and the upper seat 20 are fixedly connected by multiple bridging rods 19, and an isolation cover 21 is connected to the bottom of the lower seat 17.

[0037] The testing table 1 is equipped with a base 10, and a feeding plate 4 is connected to the top of the base 10. A feeding groove 5 is opened on the top of the feeding plate 4. A conveyor line 6 is arranged on the side of the testing table 1. A feeding port 7 is opened on the side of the conveyor line 6 corresponding to the position of the feeding groove 5. A U-shaped plate 8 is connected between the conveyor line 6 and the feeding plate 4 corresponding to the positions of the feeding groove 5 and the feeding port 7. A combination port 9 is opened on the other side of the conveyor line 6.

[0038] The loading trough 5 is used to place the power bank body 22. A USB connector 11 is provided on the inner wall of the loading trough 5 corresponding to the position of the power bank body 22. A tester 12 is installed on one side of the top of the base 10. The other end of the USB connector 11 is connected to the tester 12 by plugging. A sliding interface 13 is also provided on the inner wall of the loading trough 5 corresponding to the power bank body 22. A housing 14 is slidably connected in the sliding interface 13. A curved bracket 15 is connected to the top of the housing 14. A linkage rod 16 is rotatably connected to the inner side of the other end of the curved bracket 15. An adapter 18 is rotatably connected to the other end of the linkage rod 16. The top end of the adapter 18 is fixedly connected to the bottom of the lower base 17.

[0039] Multiple piston cylinders 23 are snapped onto the base 10 at positions corresponding to the upper seat 20. A piston rod 25 is slidably connected to the top of each piston cylinder 23, and a piston head 24 is connected to the end of the piston rod 25. The piston head 24 is slidably connected inside the piston cylinder 23, and a first spring 26 is connected to the bottom of the piston head 24. The piston head 24 forms an elastic support with the inner bottom wall of the piston cylinder 23 through the first spring 26. Multiple piston cylinders 23 located on the same side are connected to each other through a first diversion pipe 28, and the first diversion pipe 28 is connected to the inside of the isolation cover 21. A first solenoid valve 29 is installed on each first diversion pipe 28.

[0040] Specifically, in this embodiment, a hydraulic telescopic vacuum suction cup picking mechanism is installed on the conveyor line 6 at the position corresponding to the assembly port 9. After the conveyor line 6 conveys a single mobile power bank body 22 to the corresponding position of the loading port 7, the vacuum suction cup in the picking mechanism is first controlled to adsorb the mobile power bank body 22. Then, the picking mechanism moves the mobile power bank body 22 on the conveyor line 6 to the position corresponding to the USB connector 11 in the loading trough 5. Next, the vacuum suction cup acting on the mobile power bank body 22 is removed, and then the hydraulic telescopic vacuum suction cup picking mechanism is controlled to perform a return motion. The hydraulic cylinder 3 is controlled to perform an extension motion, pushing the slide 2 to slide downward along the slide rail 55. The slide 2 drives the isolation cover through the upper seat 20, multiple bridging rods 19 and the lower seat 17. Simultaneously, the hydraulic cylinder 3 pushes the isolation cover 21 downwards through the upper seat 20, while the bottom of the upper seat 20 simultaneously presses down multiple piston rods 25. Under pressure, the piston rods 25 push the piston head 24 downwards within the piston cylinder 23, compressing the first spring 26 to cause elastic deformation. Once the power supply body 22 enters the test environment sealed by the isolation cover 21, the system controls multiple first solenoid valves 29 to open simultaneously. The vacuum environment above the piston head 24 within the multiple piston cylinders 23 is continuously drawn away from the power supply body 22 through the first diversion pipe 28. The air in the test environment is made to approach a vacuum. During the downward movement of the lower seat 17 and the isolation cover 21, the bottom of the lower seat 17 drives the top of the linkage rod 16 downward through the adapter 18. The top of the linkage rod 16 rotates inside the adapter 18, and its other end transmits the downward thrust to the housing 14 through the bent bracket 15. The housing 14 then pushes the power bank body 22 towards the USB connector 11 until the power bank body 22 and the USB connector 11 are connected. Through the hydraulic telescopic vacuum suction cup picking mechanism, the power bank body 22 is automatically adsorbed, transferred and released from the conveyor line 6 to the loading trough 5, reducing manual intervention and improving testing efficiency. The hydraulic cylinder 3 drives the slide 2 and the isolation cover 21 downward, making The isolation cover 21 and the base 10 form a closed space, ensuring that the power bank body 22 is tested in a controlled environment, avoiding interference from external airflow, dust and other factors on the test results. Utilizing the vacuum state pre-created above the piston cylinder 23 during the downward pressing of the piston rod 25, and in conjunction with the synchronous opening of the first solenoid valve 29 and the first diverter pipe 28, the air inside the isolation cover 21 can be quickly extracted, rapidly bringing the test environment close to a vacuum and shortening the vacuuming waiting time. During the downward movement of the lower seat 17, the downward power is converted into a horizontal thrust of the casing 14 on the power bank body 22 through the linkage transmission of the adapter 18, the linkage rod 16 and the bend bracket 15. The USB connector 11 can be automatically plugged in without additional drive components, resulting in a compact structure and reliable operation.Under low pressure, the internal pressure of a poorly sealed battery cell may be higher than the external pressure, leading to electrolyte leakage, casing bulging, or even explosion. This test can effectively expose sealing defects in the battery cell.

[0041] Specifically, the feeding plate 4 has a first interlayer inside, and a first fluid pipe 30 and a second fluid pipe 31 connected to the first interlayer are respectively opened at both ends of the feeding plate 4.

[0042] The casing 14 has a second interlayer inside. Both ends of the casing 14 are connected to a drainage pipe 32 and a return pipe 33 that are connected to the second interlayer. The other ends of the drainage pipe 32 and the return pipe 33 are connected to the first interlayer.

[0043] Specifically, during the rapid testing of the power bank body 22 within the isolation cover 21, a low-temperature fluid or a high-temperature fluid is supplied to the first interlayer through the first fluid pipe 30. Part of the fluid entering the first interlayer flows directly to the second fluid pipe 31, while the other part flows into the second interlayer through the guide pipe 32, then along the second interlayer to the return pipe 33, and finally back to the position in the first interlayer near the second fluid pipe 31. The inner wall of the loading tank 5 and the casing 14 work together to control the temperature of all five sides of the power bank body 22. The entire temperature control process is conducted in a vacuum testing environment. Through the combined structure of the loading tank 5 and the casing 14, simultaneous temperature adjustment is achieved on all five sides of the power bank body 22 except the side connected to the USB connector 11, expanding the heat exchange contact area and making... Temperature control is more comprehensive and uniform. The fluid is split in the first interlayer, with one part flowing out directly and the other part circulating back through the second interlayer, forming a parallel flow path of main and branch paths. This avoids fluid stagnation or short circuits, improving temperature response speed and heat exchange efficiency. The temperature control process is combined with the vacuum testing environment, eliminating the interference of air convection on heat transfer, making temperature regulation more controllable and stable. This is beneficial for simulating cell performance testing under extreme temperature conditions. The temperature control channel is built into the loading plate 4 and the housing 14, eliminating the need for an external temperature control module that occupies extra space, maintaining the overall compactness of the testing device, and reducing the risk of leakage caused by exposed pipelines. By switching between low-temperature or high-temperature fluids, different testing conditions such as low temperature, high temperature, or thermal shock can be quickly switched to meet the rapid testing needs of mobile power cell cells in different temperature scenarios.

[0044] Specifically, the inner bottom of the feeding trough 5 is provided with a first groove 34, and a sealing plate 35 is engaged at the opening of the first groove 34. Multiple anchor rods 36 are slidably passed through the sealing plate 35, and the bottom ends of the multiple anchor rods 36 are connected to the same linkage plate 37. The side of the linkage plate 37 is rotatably connected to the adapter shaft 38.

[0045] The inner wall of the first groove 34 is rotatably connected to a wheel axle 42. A wheel disk 41 is fixedly sleeved at the end of the wheel axle 42. An eccentric shaft 40 is rotatably connected to the wheel disk 41 at a position off from its center. A transmission sleeve 39 is provided between the eccentric shaft 40 and the wheel axle 42. The transmission sleeve 39 is used to transmit motion.

[0046] The other end of the wheel shaft 42 extends to one side of the feed plate 4, and an impeller 50 is fixedly sleeved at this end. A cover 43 is connected around the periphery of the impeller 50 on the feed plate 4. The outer wall of the cover 43 is connected to the first connector 44 and the second connector 49 in opposite directions along the tangential direction.

[0047] Specifically, in this embodiment, multiple piston cylinders 23 are interconnected by a second diversion pipe 28, which is also connected to a first connector 44. The opening of the second diversion pipe 28 is located below the piston disc. During the downward pressing of the piston rod 25, the air in the multiple piston cylinders 23 located below the piston disc is compressed. When the second solenoid valve installed on the second diversion pipe 28 is opened, the compressed air in the multiple piston cylinders 23 converges in the opposite direction to the first connector 44 through the same second diversion pipe 28. The compressed air entering the casing 43 acts directly on the impeller 50, thereby driving the impeller 50 to rotate rapidly within the first groove 34 via the wheel shaft 42. The other end of the wheel shaft 42 drives the wheel disc 41 to rotate within the first groove 34. The wheel disc 41 drives the eccentric shaft 40 at its eccentric position to perform circular motion, and pulls one end of the transmission sleeve 39 to move synchronously. The other end of the transmission sleeve 39 swings around the transition shaft 38, alternately applying downward pressure and upward thrust to the linkage plate 37, thereby driving multiple anchor rods 36 to continuously impact and move. At the bottom of the power supply body 22, vibration excitation is provided to the power supply body 22. The compressed bottom air in the piston cylinder 23 is used as the energy to drive the impeller 50. No additional air source or power device is required, realizing energy reuse and improving the overall energy efficiency of the system. The generation of vibration excitation shares the same piston pressing stroke with the aforementioned vacuum establishment process, making full use of the incidental compression effect of mechanical action. Through the eccentric linkage mechanism composed of the wheel 41, eccentric shaft 40 and transmission sleeve 39, the rotational motion of the impeller 50 is converted into the reciprocating linear motion of the anchor rod 36, realizing intermittent continuous impact on the bottom of the power supply body 22. The structure is simple and highly reliable. The additional vibration excitation in the vacuum and temperature control environment helps to expose potential defects such as poor soldering, poor contact, and internal loosening of the internal battery cells of the power supply, improving the accuracy of detection and the defect identification rate. By controlling the opening and closing time and frequency of the second solenoid valve, the discharge speed of compressed air can be adjusted, thereby changing the rotational speed and impact frequency of the impeller 50, realizing flexible adjustment of vibration intensity and mode.

[0048] Specifically, one end of the transmission sleeve 39 is rotatably connected to the eccentric shaft 40, and the other end of the transmission sleeve 39 is internally sleeved with a transmission shaft 51. The end of the transmission shaft 51 is rotatably connected to the adapter shaft 38. The other end of the transmission shaft 51 is connected to a permanent magnet plate 52. A U-shaped plate 53 located at the bottom of the permanent magnet plate 52 is snapped onto the inner wall of the transmission sleeve 39. An electromagnet 54 is installed on the inner bottom of the transmission sleeve 39.

[0049] The inner bottom of the feeding trough 5 is provided with a second groove 45 between the power bank body 22 and the housing 14. A limiting plate 46 is slidably connected in the second groove 45. Multiple second springs 48 are connected to the bottom of the limiting plate 46. The limiting plate 46 forms an elastic support with the inner bottom of the second groove 45 through the multiple second springs 48. A slope 47 is provided on the side of the limiting plate 46 facing the housing 14.

[0050] Specifically, this embodiment involves energizing the electromagnet 54. The energized electromagnet 54 and the permanent magnet plate 52 share the same magnetic poles on opposite sides, generating a magnetic repulsion force between them. This repulsion force drives the transmission shaft 51 to extend outward within the transmission sleeve 39, thereby increasing the distance between the eccentric shaft 40 and the adapter shaft 38. This enhances the impact strength of the anchor rod 36 on the bottom of the mobile power supply body 22. The impact strength is adjusted using the repulsion force between the like poles of the electromagnet 54 and the permanent magnet plate 52, requiring no mechanical contact or additional driving components, resulting in rapid response and control. With precise control, the electromagnet 54 and permanent magnet plate 52 are directly integrated into the transmission sleeve 39, realizing a variable impact function on the basis of the original transmission structure. Without adding an external actuator, the device remains compact. By adjusting the magnitude of the current or the on / off time of the electromagnet 54, the repulsive force can be infinitely adjusted, thereby flexibly changing the impact force of the anchor rod 36 to adapt to different detection requirements or different models of mobile power supplies. The enhancement and adjustment of the impact intensity are still based on the original transmission chain, without modifying the overall mechanical structure, which facilitates functional upgrades on existing equipment.

[0051] Specifically, each sleeve is equipped with a sensor module 27, which is located above the piston head 24.

[0052] Specifically, during the testing of the power bank body 22, gas may be released from within it. To maintain the vacuum level within the isolation cover 21, multiple first solenoid valves 29 are sequentially opened during the test to continuously extract the gas from the isolation cover 21. The extracted gas is analyzed by the sensing module 27 to determine its composition and the amount of gas released per unit time. By sequentially opening multiple first solenoid valves 29 to continuously extract gas from the isolation cover 21 during the test, the decrease in vacuum level caused by the gas release from the power bank body 22 is effectively compensated, ensuring the stability of the testing environment. The extracted gas is directly fed into the sensing module 27. Module 27 performs analysis and can identify gas types in real time, providing direct evidence for judging whether the battery cell is abnormal. By analyzing the amount of gas released per unit time, it can assess the airtightness, thermal stability, or intensity of internal chemical reactions of the power bank body 22, assisting in determining the health status of the battery cell. By combining vacuum changes and gas composition analysis, it can capture trace gas release characteristics before serious battery cell failures occur, achieving early warning and improving detection safety. It integrates vacuum maintenance, gas collection, composition analysis, and quantitative evaluation into the same testing process, enriching the dimensions of detection parameters and providing more comprehensive data support for subsequent quality judgment and fault tracing.

[0053] During operation, a hydraulic telescopic vacuum suction cup picking mechanism is installed on the conveyor line 6 at the position corresponding to the combination port 9. After the conveyor line 6 transports a single mobile power supply body 22 to the corresponding position of the loading port 7, the vacuum suction cup in the picking mechanism is first controlled to adsorb the mobile power supply body 22. Then, the picking mechanism moves the mobile power supply body 22 to the position corresponding to the USB connector 11 in the loading trough 5. Next, the vacuum suction cup acting on the mobile power supply body 22 is removed, and then the picking mechanism is controlled to perform the return motion.

[0054] The hydraulic cylinder 3 is controlled to extend, pushing the slide 2 to slide down along the slide rail 55. The slide 2 drives the isolation cover 21 to move down synchronously through the upper seat 20, multiple bridging rods 19 and the lower seat 17 until the bottom of the isolation cover 21 reaches the top of the base 10. At this time, the mobile power supply body 22 to be tested is in a test environment sealed and isolated by the isolation cover 21.

[0055] As the hydraulic cylinder 3 pushes the isolation cover 21 downward through the upper seat 20, the bottom of the upper seat 20 simultaneously presses down multiple piston rods 25. Under the pressure, the piston rods 25 push the piston head 24 to slide downward in the piston cylinder 23 and compress the first spring 26 to cause elastic deformation. When the mobile power supply body 22 to be tested enters the test environment sealed and isolated by the isolation cover 21, the system controls multiple first solenoid valves 29 to open simultaneously. The vacuum environment above the piston head 24 in the multiple piston cylinders 23 is continuously evacuated from the test environment where the mobile power supply body 22 is located through the first diversion pipe 28, so that the test environment tends to be a vacuum.

[0056] As the lower base 17 moves downward in conjunction with the isolation cover 21, the bottom of the lower base 17 drives the top of the linkage rod 16 downward via the adapter 18. The top of the linkage rod 16 rotates inside the adapter 18, and its other end transmits the downward thrust in the opposite direction to the housing 14 via the bend bracket 15. The housing 14 then pushes the power bank body 22 toward the USB connector 11 until the power bank body 22 and the USB connector 11 are successfully connected.

[0057] The hydraulic telescopic vacuum suction cup material handling mechanism enables the automatic adsorption, transfer, and release of the mobile power supply body 22 from the conveyor line 6 to the loading trough 5, reducing manual intervention and improving testing efficiency. The hydraulic cylinder 3 drives the slide 2 and the isolation cover 21 to descend, forming a closed space between the isolation cover 21 and the base 10, ensuring that the mobile power supply body 22 is tested in a controlled environment, avoiding interference from external airflow, dust, and other factors on the test results. The vacuum state pre-formed above the piston cylinder 23 during the downward pressing of the piston rod 25, combined with the synchronous opening of the first solenoid valve 29 and the first diverter pipe 28, is utilized. It can quickly remove the air from the isolation cover 21, making the test environment quickly approach a vacuum, shortening the vacuuming waiting time. During the downward movement of the lower seat 17, the downward power is converted into the horizontal thrust of the casing 14 on the mobile power body 22 through the linkage transmission of the adapter 18, linkage rod 16 and bending frame 15. The USB connector 11 can be automatically plugged in without additional drive components. It has a compact structure and reliable operation. Under low air pressure, the internal pressure of a poorly sealed battery cell may be greater than that of the outside, causing electrolyte leakage, casing bulging or even explosion. This test can effectively expose the sealing defects of the battery cell.

[0058] During the rapid testing of the power bank body 22 inside the isolation cover 21, low-temperature fluid or high-temperature fluid is delivered to the first interlayer through the first fluid pipe 30. Part of the fluid entering the first interlayer flows directly to the second fluid pipe 31, while the other part flows into the second interlayer through the drainage pipe 32. Then, it flows along the second interlayer to the return pipe 33 and returns to the position in the first interlayer near the second fluid pipe 31 through the return pipe 33. The inner wall of the feeding tank 5 and the shell 14 work together to control the temperature of the five sides of the power bank body 22, and the entire temperature control process is carried out in a vacuum test environment.

[0059] Through the combined structure of the feeding trough 5 and the housing 14, the temperature of the five sides of the power bank body 22, excluding the side connected to the USB connector 11, can be adjusted simultaneously. This expands the heat exchange contact area, making the temperature control more comprehensive and uniform. The fluid is split in the first interlayer, with one part flowing out directly and the other part circulating back through the second interlayer, forming a parallel flow path of main and branch paths. This avoids fluid stagnation or short circuits, improving the temperature response speed and heat exchange efficiency. The temperature control process is combined with the vacuum test environment, eliminating the interference of air convection on heat transfer, making the temperature adjustment more controllable and stable. This is beneficial for simulating the performance testing of the battery cell under extreme temperature conditions. The temperature control channel is built into the feeding plate 4 and the housing 14, eliminating the need for an external temperature control module that occupies extra space. This maintains the overall compactness of the testing device and reduces the risk of leakage caused by exposed pipes. By switching between low-temperature or high-temperature fluids, different test conditions such as low temperature, high temperature, or thermal shock can be quickly switched to meet the rapid testing needs of the power bank battery cell in different temperature scenarios.

[0060] Multiple piston cylinders 23 are interconnected by a second diversion pipe 28, which is also connected to the first connector 44. The opening of the second diversion pipe 28 is located below the piston disc. During the downward pressing of the piston rod 25, the air in the multiple piston cylinders 23 located below the piston disc is compressed. When the second solenoid valve installed on the second diversion pipe 28 is opened, the compressed air in the multiple piston cylinders 23 converges in the opposite direction to the first connector 44 through the same second diversion pipe 28. The compressed air entering the housing 43 directly acts on... On the impeller 50, the impeller 50 is driven to rotate rapidly in the first groove 34 via the wheel shaft 42. The other end of the wheel shaft 42 drives the wheel disk 41 to rotate in the first groove 34. The wheel disk 41 drives the eccentric shaft 40 at its eccentric position to make a circular motion and pulls one end of the transmission sleeve 39 to move synchronously. The other end of the transmission sleeve 39 swings around the adapter shaft 38, alternately applying downward pressure and upward thrust to the linkage plate 37, thereby driving multiple anchor rods 36 to continuously hit the bottom of the mobile power supply body 22 and provide vibration excitation to the mobile power supply body 22.

[0061] The compressed air at the bottom of the piston cylinder 23 is used as the energy source to drive the impeller 50. No additional air source or power device is required, realizing energy reuse and improving the overall energy efficiency of the system. The generation of vibration excitation shares the same piston pressing stroke as the aforementioned vacuum establishment process, making full use of the incidental compression effect of mechanical action. Through the eccentric linkage mechanism composed of the wheel 41, eccentric shaft 40 and transmission sleeve 39, the rotational motion of the impeller 50 is converted into the reciprocating linear motion of the anchor rod 36, realizing intermittent continuous impact on the bottom of the power supply body 22. The structure is simple and highly reliable. The additional vibration excitation in the vacuum and temperature control environment helps to expose potential defects such as poor soldering, poor contact and internal loosening of the internal battery cells of the power supply, improving the accuracy of detection and defect identification rate. By controlling the opening and closing time and frequency of the second solenoid valve, the discharge speed of compressed air can be adjusted, thereby changing the rotational speed and impact frequency of the impeller 50, realizing flexible adjustment of vibration intensity and mode.

[0062] When the electromagnet 54 is energized, the electromagnet 54 and the permanent magnet plate 52 have the same magnetic poles on the opposite side, and a magnetic repulsion force is generated between them. This repulsion force pushes the transmission shaft 51 to extend outward in the transmission sleeve 39, thereby increasing the distance between the eccentric shaft 40 and the adapter shaft 38, and thus enhancing the impact strength of the anchor rod 36 on the bottom of the mobile power supply body 22.

[0063] The impact intensity is adjusted by utilizing the repulsive force between the like poles of electromagnet 54 and permanent magnet plate 52. No mechanical contact or additional driving components are required. The response is rapid and the control is precise. Electromagnet 54 and permanent magnet plate 52 are directly built into the transmission sleeve 39. The variable impact function is realized on the basis of the original transmission structure without adding external actuators, thus maintaining the compactness of the device. By adjusting the magnitude of the current or the on / off time of electromagnet 54, the repulsive force can be infinitely adjusted, thereby flexibly changing the impact force of anchor rod 36 to adapt to different detection requirements or different models of mobile power supply. The enhancement and adjustment of impact intensity are still based on the original transmission chain, without modifying the overall mechanical structure, which facilitates functional upgrades on existing equipment.

[0064] During the testing of the power bank body 22, gas may be released inside. At the same time, in order to maintain the vacuum inside the isolation cover 21, multiple first solenoid valves 29 need to be opened sequentially during the test to continuously extract the gas inside the isolation cover 21. The extracted gas is analyzed by the sensing module 27 to determine the composition of the gas and the amount of gas released per unit time.

[0065] By sequentially opening multiple first solenoid valves 29, gas is continuously extracted from the isolation cover 21 during the test, effectively compensating for the decrease in vacuum caused by gas release from the power bank body 22, ensuring the stability of the test environment. The extracted gas is directly sent to the sensing module 27 for analysis, which can identify the gas type in real time, providing direct evidence for judging whether the battery cell is abnormal. By using the gas release data per unit time, the airtightness, thermal stability, or intensity of internal chemical reactions of the power bank body 22 can be evaluated, assisting in judging the health status of the battery cell. Combining vacuum changes and gas composition analysis, trace gas release characteristics can be captured before serious battery cell failure, achieving early warning and improving detection safety. Integrating vacuum maintenance, gas collection, composition analysis, and quantitative evaluation into the same test process enriches the dimensions of detection parameters and provides more comprehensive data support for subsequent quality judgment and fault tracing.

[0066] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A rapid testing device for mobile power bank cells, comprising a testing platform; characterized in that: The testing platform is equipped with a slide rail, and a slide block is slidably connected on the slide rail. A hydraulic cylinder is fixed on the top of the testing platform. The top of the slide block is connected to the telescopic end of the hydraulic cylinder. An upper seat is connected to the bottom of the slide block. A lower seat is provided below the upper seat. The lower seat and the upper seat are fixedly connected by multiple bridging rods. An isolation cover is connected to the bottom of the lower seat. The testing platform is equipped with a base, and a feeding plate is connected to the top of the base. A feeding groove is opened on the top of the feeding plate. A conveyor line is arranged on the side of the testing platform. A feeding port is opened on the side of the conveyor line corresponding to the position of the feeding groove. A U-shaped plate is connected between the conveyor line and the feeding plate corresponding to the positions of the feeding groove and the feeding port. A combination port is opened on the other side of the conveyor line.

2. The mobile power bank cell rapid testing device according to claim 1, characterized in that: The loading trough is used to place the power bank body. A USB connector is provided on the inner wall of the loading trough corresponding to the position of the power bank body. A tester is installed on one side of the top of the base. The other end of the USB connector is connected to the tester by a plug-in method. A sliding interface is also provided on the inner wall of the loading trough corresponding to the power bank body. A housing is slidably connected in the sliding interface. A curved bracket is connected to the top of the housing. A linkage rod is rotatably connected to the inner side of the other end of the curved bracket. An adapter is rotatably connected to the other end of the linkage rod. The top end of the adapter is fixedly connected to the bottom of the lower base.

3. The mobile power bank cell rapid testing device according to claim 2, characterized in that: Multiple piston cylinders are snapped onto the base at positions corresponding to the upper seat. A piston rod is slidably connected to the top of each piston cylinder, and a piston head is connected to the end of the piston rod. The piston head is slidably connected inside the piston cylinder, and a first spring is connected to the bottom of the piston head. The piston head forms an elastic support with the inner bottom wall of the piston cylinder through the first spring. Multiple piston cylinders located on the same side are connected to each other through a first diversion pipe, and the first diversion pipe is connected to the inside of the isolation cover. A first solenoid valve is installed on each first diversion pipe.

4. The mobile power bank cell rapid testing device according to claim 3, characterized in that: The feeding plate has a first interlayer inside, and a first fluid pipe and a second fluid pipe connected to the first interlayer are respectively opened at both ends of the feeding plate. The casing has a second interlayer inside, and the two ends of the casing are respectively connected to a drainage pipe and a return pipe that communicate with the second interlayer. The other ends of the drainage pipe and the return pipe are both connected to the first interlayer.

5. The mobile power bank cell rapid testing device according to claim 4, characterized in that: The inner bottom of the feeding trough is provided with a first groove, and a sealing plate is snapped into the opening of the first groove. Multiple anchor rods are slidably passed through the sealing plate, and the bottom ends of the multiple anchor rods are connected to the same linkage plate. The side of the linkage plate is rotatably connected to a transition shaft. The inner wall of the first groove is rotatably connected to a wheel axle, and a wheel disk is fixedly sleeved at the end of the wheel axle. An eccentric shaft is rotatably connected to the wheel disk at a position off-center from its center. A transmission sleeve is provided between the eccentric shaft and the wheel axle, and the transmission sleeve is used to transmit motion. The other end of the axle extends to one side of the feed plate, and an impeller is fixedly sleeved at that end. A cover is connected around the impeller on the feed plate, and a first connector and a second connector are respectively connected in opposite directions along the tangential direction on the outer wall of the cover.

6. The mobile power bank cell rapid testing device according to claim 5, characterized in that: One end of the transmission sleeve is rotatably connected to the eccentric shaft, and the other end of the transmission sleeve is internally fitted with a transmission shaft. The end of the transmission shaft is rotatably connected to the adapter shaft. The other end of the transmission shaft is connected to a permanent magnet plate. A U-shaped plate located at the bottom of the permanent magnet plate is snapped onto the inner wall of the transmission sleeve. An electromagnet is installed on the inner bottom of the transmission sleeve.

7. A mobile power bank cell rapid testing device according to claim 6, characterized in that: The inner bottom of the feeding trough has a second groove between the power supply body and the casing. A limiting plate is slidably connected in the second groove. Multiple second springs are connected to the bottom of the limiting plate. The limiting plate forms an elastic support with the inner bottom of the second groove through the multiple second springs. A slope is provided on the side of the limiting plate facing the casing.

8. The mobile power bank cell rapid testing device according to claim 7, characterized in that: Each of the sleeves is equipped with a sensing module, which is located above the piston head.

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