An automatic detection device for charging and discharging function of lithium battery

Abstract

The present application relates to lithium battery detection technical field, disclose a kind of lithium battery charge-discharge function automation detection device, including detection table, the top of detection table is fixedly installed with inclined table, the surface of inclined table is provided with baffle, baffle and inclined table are perpendicular, the top of inclined table is fixedly connected with portal frame, the lower of portal frame is fixedly installed with infrared thermal imager, the surface both sides of inclined table are provided with detection head, by guiding component, when infrared thermal imager detects lithium battery temperature anomaly, by hooking component T type clamping plate is driven to slide, remove the restriction to convex slider, make guide plate under the action of lithium battery gravity to form slide way and incline downward, guide abnormal battery into emergency cooling bin alone, realize the physical isolation with normal battery, when temperature anomaly, automatically guide overheated battery into emergency cooling bin and carry out forced cooling, avoid heat runaway and cause safety accident.

Description

Technical Field

[0001] This invention belongs to the field of lithium battery testing technology, specifically relating to an automated testing device for the charging and discharging function of lithium batteries. Background Technology

[0002] The automated testing device for lithium battery charging and discharging functions is a core piece of equipment used in the production and testing of new energy batteries. Its basic function is to test the electrical performance parameters of finished lithium batteries during the charging and discharging process to verify whether key indicators such as battery capacity, internal resistance, and charging and discharging efficiency meet design requirements. This device replaces the traditional manual one-by-one testing method with automated feeding and testing processes, effectively improving testing efficiency and consistency. It is an important technical means to ensure the quality of lithium batteries leaving the factory and their safety in use, and is widely used in battery manufacturing and assembly lines in consumer electronics, power tools, and new energy vehicles.

[0003] Lithium-ion battery charge / discharge function testing typically employs semi-automatic or fully automatic testing lines. The basic process is as follows: Batteries to be tested are first placed in batches onto a conveyor track. After being sequentially transported to the testing station, they are fixed by a positioning mechanism. Then, two testing probes, driven by cylinders or lead screws, move laterally to contact the positive and negative terminals of the battery. The testing system applies a preset charge / discharge current to the battery through the probes and simultaneously collects electrical performance parameters such as voltage, current, and internal resistance. After testing, the probes retract, and the batteries continue to be transported to the next process along a preset path. A manual or automated sorting mechanism then collects qualified and unqualified products based on the test results.

[0004] In existing technologies, when testing the charging and discharging functions of lithium batteries, abnormal temperature rises may occur due to internal micro-defects, local short circuits, or overcharging and over-discharging. If these abnormal batteries are not detected and dealt with in time, they may eventually lead to serious fire accidents such as spontaneous combustion or even explosion. More importantly, after the abnormal batteries are tested, they are mixed with normal batteries along the same conveying path and cannot be effectively physically isolated. This not only increases the difficulty of subsequent sorting and inspection, but also makes it easy for the heat from a single overheated battery to transfer heat to the surrounding batteries, seriously threatening the operational safety of the entire production line and the protection of personnel and equipment.

[0005] Therefore, the present invention provides an automated detection device for the charging and discharging function of lithium batteries. Summary of the Invention

[0006] To overcome the shortcomings of the prior art: to solve at least one technical problem raised in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides an automated testing device for the charging and discharging function of lithium batteries, including a testing platform, an inclined platform fixedly installed above the testing platform, a baffle plate provided on the surface of the inclined platform, the baffle plate being perpendicular to the inclined platform, a gantry frame fixedly connected above the inclined platform, an infrared thermal imager fixedly installed below the gantry frame, protective plates symmetrically fixedly connected to the upper surface of the testing platform, a portion of the top of the protective plates being configured as a bending guide, testing heads provided on both sides of the surface of the inclined platform, a translation component that can drive the testing heads to move laterally provided below the testing heads, a feeding component provided below the baffle plate, the feeding component can remove the restriction on the lithium battery by driving the baffle plate to deflect downwards, allowing the lithium battery to continue rolling downwards along the surface of the inclined platform, a guide component provided on the surface of the inclined platform, the guide component including a feed plate embedded in the inner wall of the inclined platform, an emergency cooling chamber provided on one side above the testing platform, the guide component can guide the lithium battery to roll into the emergency cooling chamber by driving the feed plate to tilt downwards.

[0008] Preferably, the translation component includes two fixed seats, which are respectively fixedly connected to the inner walls of the two sides of the tilting stage. A motor is fixedly installed at one end of each fixed seat, and the output shaft of each motor is fixedly connected to a threaded rod. The threaded rod is rotatably connected to the inside of the fixed seat, and the outer wall of each threaded rod is threadedly connected to an internal threaded slider. The internal threaded slider is slidably connected to and adapted to the inner wall of the fixed seat. The detection head is fixedly connected above the internal threaded slider.

[0009] Preferably, a tester is installed on the top of the testing platform, and wires are fixedly connected to both sides of the tester. The ends of the wires away from the tester are fixedly connected to one side of the testing head. The infrared thermal imager is electrically connected to the tester, and the tester is electrically connected to the motor.

[0010] Preferably, a dual-axis bearing seat is fixedly connected to the top of the testing platform. The two shafts at the top of the dual-axis bearing seat are rotatably connected to the inner wall of the inclined platform. One end of the baffle plate is fixedly connected to the outer wall of one of the shafts of the dual-axis bearing seat, and one end of the feed plate is fixedly connected to the outer wall of the other shaft of the dual-axis bearing seat. An arc-shaped connecting rod is symmetrically fixedly connected to one side of the baffle plate. The arc-shaped connecting rod continuously penetrates the surface of the inclined platform and the inner wall of the dual-axis bearing seat. An arc-shaped block is fixedly connected to the end away from the baffle plate. A pressure spring is provided on the outside of the arc-shaped connecting rod. One end of the pressure spring is fixedly connected to the side of the baffle plate. The pressure spring penetrates the inner wall of the inclined platform and the other end is fixedly connected to the side of the dual-axis bearing seat. A limiting seat is fitted on the outside of the arc-shaped block. The limiting seat is slidably connected to the wall of the dual-axis bearing seat.

[0011] Preferably, the feeding assembly includes two transverse frames, which are located below the internal threaded slider. A wedge block 1 is slidably connected to the inner wall of one end of each transverse frame, and a wedge block 2 is fixedly connected to the top of each limiting seat. A spring 1 is fixedly connected between the top of the wedge block 1 and the bottom of the transverse frame, and the slots of the wedge block 1 and the wedge block 2 fit together.

[0012] Preferably, a metal gasket is fixedly connected to the top of each wedge block one, a magnet block is fixedly installed at the bottom of each fixing seat, and a spring two is fixedly connected between one side of the wedge block two and the wall of the double-axis bearing seat.

[0013] Preferably, the guide assembly includes two lifting columns, both of which are fixedly installed on the top of the testing table. The inner walls of the lifting columns are slidably connected to convex sliders, and the tops of the convex sliders are fixedly connected to support rods. The support rods are located directly below the feed plate. The sides of the lifting columns are fixedly connected to slide rod frames, and the slide rods of the slide rod frames are slidably connected to T-shaped locking plates. One end of the T-shaped locking plate is respectively attached to the bottom of the convex slider. A hook assembly is provided on one side of the transverse frame, which can drive the T-shaped locking plate to slide along the surface of the slide rod frame.

[0014] Preferably, the hook assembly includes two connecting seats, which are slidably connected to the side of the dual-axis bearing seat. Each connecting seat is fixedly connected to the bottom of the internal threaded slider. Each connecting seat has a telescopic rod fixedly connected inside. One end of each telescopic rod is fixedly connected to a transverse block. The transverse block is slidably connected to the inner wall of the connecting seat. One side of the transverse block is fixedly connected to one side of the transverse frame. Each transverse frame has a connecting arm fixedly connected to the outside. One end of each connecting arm is fixedly connected to a hook plate. One side of each T-shaped card plate is fixedly connected to a beveled plate.

[0015] Preferably, each of the convex sliders is fixedly connected to a second pressure spring, the bottom end of which is fixedly connected to the top of the testing table. Each of the T-shaped positioning plates is fixedly connected to a third spring, the end of which is away from the T-shaped positioning plate is fixedly connected to the side of the slide bar frame.

[0016] Preferably, smoke sensors are symmetrically fixedly connected to the sides of the gantry frame, a quick-cooling plate is fixedly installed at the bottom of the feed plate, the top of the support rod is attached to the bottom of the quick-cooling plate, and the smoke sensors are electrically connected to the quick-cooling plate.

[0017] The beneficial effects of this invention are as follows: 1. The automated testing device for lithium battery charging and discharging function described in this invention uses a translation component to drive the testing head to move laterally along both sides of the inclined platform, thereby achieving contact pressing and separation between the testing head and the electrodes at both ends of the lithium battery, thus ensuring the conduction and interruption of the charging and discharging function testing; at the same time, the translation component can drive the feeding component or the guiding component to move, realizing path switching under different working conditions; it simplifies the overall structure and reduces manufacturing costs and control complexity.

[0018] 2. The automated detection device for lithium battery charging and discharging function described in this invention, through the feeding assembly, when the lithium battery temperature is detected to be normal, drives the limiting seat to slide away from the arc block through the engaging connection of wedge block one and wedge block two, releasing the locking restriction on the baffle plate, so that the baffle plate deflects downward under the action of the lithium battery's gravity, thereby releasing the battery to complete the normal feeding. When the temperature is normal, the obstruction is automatically released, so that the normal batteries roll down and collect along the inclined table surface, without the need for an additional power source, relying on the reverse movement of the translation assembly as the power.

[0019] 3. The automated detection device for lithium battery charging and discharging function described in this invention, through a guiding component, when the infrared thermal imager detects an abnormal lithium battery temperature, drives the T-shaped locking plate to slide through the hook component, releasing the restriction on the convex slider, so that the feed plate tilts downward under the gravity of the lithium battery to form a slide, guiding the abnormal battery separately into the emergency cooling chamber, realizing physical isolation from normal batteries. When the temperature is abnormal, the overheated battery is automatically introduced into the emergency cooling chamber for forced cooling, avoiding thermal runaway and safety accidents.

[0020] 4. The automated detection device for lithium battery charging and discharging function described in this invention uses an infrared thermal imager to monitor the full surface temperature of the lithium battery in real time during the charging and discharging process. Once an abnormal temperature rise is detected, the detection can be immediately interrupted and the detection head can be separated, thus curbing the continued accumulation of heat from the source and effectively preventing serious accidents such as spontaneous combustion or explosion caused by overheating of the battery. This effectively ensures the safety of personnel and the integrity of equipment at the testing site.

[0021] 5. The automated testing device for lithium battery charging and discharging function described in this invention, when a lithium battery is determined to have an abnormal temperature, keeps the feeding component stationary and the baffle plate continues to maintain a vertical blocking state to ensure that the overheated battery does not continue to roll down the inclined table surface; at the same time, the guide component drives the feeding plate to tilt downwards, guiding the battery separately into the emergency cooling chamber for forced cooling, instead of mixing it with normally fed tested batteries in the same collection area; in this way, not only is the possibility of overheated batteries being mixed into the qualified product pile and causing subsequent sorting confusion or secondary hazards eliminated, but also the possibility of a single overheated battery inducing heat spread to surrounding batteries due to heat transfer in the normal battery pile is prevented, thus maximizing the operational safety of the entire testing line and the accuracy of product traceability. Attached Figure Description

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

[0023] Figure 1 This is a three-dimensional view of the entire invention; Figure 2 This is a schematic diagram of the structure at the tilting platform in this invention; Figure 3 This is a schematic diagram of the structure at the fixing seat in this invention; Figure 4 This is a schematic diagram of the structure at the arc-shaped connecting rod in this invention; Figure 5 This is a schematic diagram of the structure at the arc-shaped block in this invention; Figure 6 This is a schematic diagram of the structure at the limiting seat in this invention; Figure 7 This is a schematic diagram of the structure at the wedge-shaped block in this invention; Figure 8 This is a schematic diagram of the structure of the metal gasket in this invention; Figure 9 This is a schematic diagram of the structure of the lifting column in this invention; Figure 10 This is a schematic diagram of the hook plate structure in this invention; Figure 11 This is a schematic diagram of the structure of the T-shaped card slot plate in this invention.

[0024] In the diagram: 1. Testing table; 2. Inclined table; 3. Baffle plate; 4. Gantry frame; 5. Infrared thermal imager; 6. Protective plate; 7. Testing head; 8. Feeding plate; 9. Emergency cooling chamber; 10. Fixed seat; 11. Threaded rod; 12. Internal threaded slider; 13. Motor; 14. Tester; 15. Wire; 16. Arc-shaped connecting rod; 17. Pressure spring one; 18. Double-axis bearing seat; 19. Arc-shaped block; 20. Limiting seat; 21. Horizontal movement frame; 22. 23. Wedge block 1; 24. Spring 1; 25. Wedge block 2; 26. Metal gasket; 27. Magnet block; 28. Spring 2; 29. ​​Lifting column; 30. Convex slider; 31. Support rod; 32. T-shaped positioning plate; 33. Slide rod frame; 34. Connecting seat; 35. Horizontal moving block; 36. Telescopic rod; 37. Connecting arm; 38. Hook plate; 39. Angled plate; 40. Pressure spring 2; 41. Spring 3; 42. Smoke sensor; 43. Quick-cooling plate. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 11As shown, the present invention provides a technical solution: an automated testing device for the charging and discharging function of lithium batteries, comprising a testing platform 1, an inclined platform 2 fixedly installed above the testing platform 1, a baffle plate 3 provided on the surface of the inclined platform 2, the baffle plate 3 being perpendicular to the inclined platform 2, a gantry frame 4 fixedly connected above the inclined platform 2, an infrared thermal imager 5 fixedly installed below the gantry frame 4, protective plates 6 symmetrically fixedly connected to the upper surface of the testing platform 1, a portion of the top of the protective plates 6 being configured as a bent guide, and testing heads 7 provided on both sides of the surface of the inclined platform 2. Below the detection head 7 is a translation component that can move it laterally. Below the baffle plate 3 is a feeding component. The feeding component can remove the restriction on the lithium battery by driving the baffle plate 3 to deflect downward, so that the lithium battery can continue to roll downward along the surface of the tilting table 2. The surface of the tilting table 2 is provided with a guide component, which includes a feed plate 8. The feed plate 8 is embedded in the inner wall of the tilting table 2. An emergency cooling chamber 9 is provided on one side above the detection table 1. The guide component can guide the lithium battery to roll into the emergency cooling chamber 9 by driving the feed plate 8 to tilt downward.

[0027] During operation: This device is adapted for automated detection of the charging and discharging functions of cylindrical lithium batteries. At the start of operation, the cylindrical lithium battery to be tested is placed along the top inclined surface of the inclined platform 2. The lithium battery body will roll downwards along the inclined surface of the inclined platform 2 under the action of gravity. During this rolling process, the bent guide structure at the top of the two protective plates 6 effectively limits and guides the rolling cylindrical lithium battery, preventing it from shifting left or right and avoiding it from falling off the sides. This ensures that the battery always rolls stably downwards along the middle path of the inclined platform 2, facilitating subsequent precise positioning. Initially, the baffle plate 3 is perpendicular to the surface of the inclined platform 2. When the lithium battery rolls to one side of the baffle plate 3, it stops moving due to the obstruction of the baffle plate 3 and comes to a stable stop on one side of the baffle plate 3. At this time, the detection heads 7 set on both sides of the inclined platform 2 are precisely positioned... At both ends of the lithium battery, namely the positive and negative terminals, the two electrodes of the cylindrical battery can be precisely aligned. Then, driven by the translation component, the two detection heads 7 move laterally and contact and press against both ends of the lithium battery to ensure good electrode conductivity, thus performing the charge and discharge function test on the battery. While the lithium battery is stopped on one side of the baffle plate 3 for charge and discharge function test, the infrared thermal imager 5 located directly above the lithium battery is activated to perform non-contact real-time infrared thermal radiation scan on the entire surface of the lithium battery, accurately capturing the temperature distribution data of each area of ​​the battery casing, and converting this data into a clear thermal image, continuously monitoring the thermal state of the battery throughout the test process. At the same time, the lead plate 8 is flush with the surface of the tilting stage 2 in the initial state, without protruding or sinking, and the bottom of the lithium battery is supported by the lead plate 8 to ensure the battery is in a stable position. Based on the temperature changes monitored by the infrared thermal imager 5, the device will perform two different subsequent actions: First, if the temperature change of the lithium battery remains stable within the preset safety range during the charging and discharging test, and there are no abnormal overheating or excessive temperature rise, the battery test process is considered to be normal. When the preset test duration ends and the functional test is completed, the translation component first drives the two detection heads 7 to move in the opposite direction, so that they are no longer in contact with the two ends of the lithium battery. At the same time, during the reverse movement, the translation component will drive the feeding component to move through mechanical linkage. The feeding component will then drive the baffle plate 3 to deflect downward, so that it changes from a vertical state to a state that is parallel to the surface of the tilting table 2 and is completely embedded in the inner wall of the tilting table 2, thereby releasing the restriction on the lithium battery. The lithium battery, no longer blocked by the baffle plate 3, will continue to roll down the slope of the tilting table 2 until it rolls to the bottom of the tilting table 2 and gathers with the lithium batteries that have been tested before, completing the normal feeding process. Secondly, if, during the charging and discharging test, the infrared thermal imager 5 senses that the real-time temperature of the lithium battery far exceeds the system's preset safety threshold, and determines that there is a risk of thermal runaway, the test process is immediately interrupted. The translation component reacts quickly and drives the detection head 7 to rapidly separate from both ends of the lithium battery. During this lateral movement, the translation component will then move in conjunction with the guide component, while the feeding component remains unchanged. That is, the baffle plate 3 remains in a vertical blocking state, continuing to prevent the lithium battery from rolling down the surface of the inclined platform 2, thus preventing it from mixing with normal batteries. At the same time, the guide component drives the feed plate 8 embedded in the inner wall of the inclined platform 2 to tilt downward, forming a downward-sloping slide. The lithium battery, which was originally supported by the feed plate 8, will roll down the inclined surface of the feed plate 8 after losing horizontal support, and will eventually be guided into the emergency cooling chamber 9 located on one side above the test platform 1. The emergency cooling chamber 9 will then perform forced and rapid emergency cooling on the abnormal battery, thereby effectively avoiding thermal runaway and ensuring the safety and reliability of the entire test process. In the above embodiment, the infrared thermal imager 5 monitors the full surface temperature of the lithium battery in real time during the charging and discharging process. Once an abnormal temperature rise is detected, the detection can be immediately interrupted and the detection head 7 can be separated, thus curbing the continued accumulation of heat from the source and effectively preventing serious accidents such as spontaneous combustion or explosion caused by overheating of the battery. This effectively ensures the safety of personnel and the integrity of equipment at the testing site. On the other hand, when the lithium battery is determined to have an abnormal temperature, the feeding component remains stationary, and the baffle plate 3 continues to maintain a vertical blocking state to ensure that the overheated battery will not continue to roll down the surface of the inclined table 2. At the same time, the guide component drives the feed plate 8 to tilt downwards, guiding the battery separately into the emergency cooling chamber 9 for forced cooling, instead of mixing it with the normally fed tested batteries in the same collection area. In this way, not only is the possibility of overheated batteries being mixed into the qualified product pile and causing subsequent sorting confusion or secondary hazards eliminated, but also the possibility of a single overheated battery inducing heat spread to surrounding batteries due to heat transfer in the normal battery pile is prevented, thus maximizing the operational safety of the entire testing line and the accuracy of product traceability.

[0028] like Figures 2 to 3 As shown, the translation component includes two fixed seats 10, which are fixedly connected to the inner walls of the two sides of the tilting stage 2. A motor 13 is fixedly installed at one end of each fixed seat 10. The output shaft of each motor 13 is fixedly connected to a threaded rod 11. The threaded rod 11 is rotatably connected to the inside of the fixed seat 10. The outer wall of each threaded rod 11 is threadedly connected to an internal threaded slider 12. The internal threaded slider 12 is slidably connected to and adapted to the inner wall of the fixed seat 10. The detection head 7 is fixedly connected above the internal threaded slider 12.

[0029] During operation: When the detection head 7 needs to approach and contact the lithium battery, the motor 13 starts, and its output shaft drives the threaded rod 11 to rotate inside the fixed base 10. The rotation of the threaded rod 11 drives the internal threaded slider 12 that is threaded with it. Since the internal threaded slider 12 is slidably engaged with and adapted to the inner wall of the fixed base 10, the slider does not follow the rotation of the threaded rod 11, but slides laterally in a straight line along the length of the fixed base 10, thereby driving the detection head 7 fixed above the slider to move synchronously towards the lithium battery on the inside of the tilting stage 2 until the detection head 7 contacts and presses against the two electrodes of the lithium battery to achieve continuity detection. After the detection is completed, the motor 13 rotates in the opposite direction, and the threaded rod 11 drives the internal threaded slider 12 to slide laterally in the opposite direction along the fixed base 10. The detection head 7 then disengages from the lithium battery and returns to its initial position.

[0030] like Figures 2 to 3 As shown, a tester 14 is installed on the top of the test station 1. Wires 15 are fixedly connected to both sides of the tester 14. The end of the wires 15 away from the tester 14 is fixedly connected to one side of the test head 7. The infrared thermal imager 5 is electrically connected to the tester 14, and the tester 14 is electrically connected to the motor 13.

[0031] During operation: The detection head 7 moves under the drive of the translation component and contacts both ends of the lithium battery. The tester 14 applies charging and discharging current to the lithium battery through the detection head 7 via the wire 15 and collects electrical performance parameters. At the same time, the infrared thermal imager 5 monitors the temperature distribution on the surface of the lithium battery in real time and transmits the collected temperature signal to the processor inside the tester 14 through an electrical connection. The tester 14 compares the received temperature data with the internally preset safety threshold in real time and sends a control command to the motor 13 based on the judgment result: If the temperature is normal, the tester 14 sends a reverse rotation command to the motor 13 through the control cable after the test is completed. The motor 13 drives the detection head 7 to disengage and complete the normal unloading. If the temperature is abnormal and exceeds the threshold, the tester 14 immediately interrupts the charging and discharging output and urgently sends a separation command to the motor 13. The motor 13 quickly rotates in the reverse direction to make the detection head 7 disengage from the lithium battery. At the same time, the tester 14 triggers the guide component to move through the electrical connection and guides the overheated battery into the emergency cooling chamber 9.

[0032] like Figures 4 to 6 As shown, a double-axis bearing seat 18 is fixedly connected to the top of the testing table 1. The two shafts at the top of the double-axis bearing seat 18 are rotatably connected to the inner wall of the inclined table 2. One end of the baffle plate 3 is fixedly connected to the outer wall of one of the shafts of the double-axis bearing seat 18. One end of the feed plate 8 is fixedly connected to the outer wall of the other shaft of the double-axis bearing seat 18. An arc-shaped connecting rod 16 is symmetrically fixedly connected to one side of the baffle plate 3. The arc-shaped connecting rod 16 continuously penetrates the surface of the inclined table 2 and the inner wall of the double-axis bearing seat 18. An arc-shaped block 19 is fixedly connected to the end away from the baffle plate 3. A pressure spring 17 is provided on the outside of the arc-shaped connecting rod 16. One end of the pressure spring 17 is fixedly connected to the side of the baffle plate 3. The pressure spring 17 penetrates the inner wall of the inclined table 2 and the other end is fixedly connected to the side of the double-axis bearing seat 18. A limiting seat 20 is sleeved on the outside of the arc-shaped block 19. The limiting seat 20 is slidably connected to the wall surface of the double-axis bearing seat 18.

[0033] During operation: When the lithium battery rolls along the inclined platform 2 to one side of the baffle plate 3 and stops, the lithium battery will exert a certain downward pressure on the baffle plate 3. At this time, since the limiting seat 20 is tightly fitted on the outside of the arc-shaped block 19, it forms a locking restriction on the arc-shaped block 19, preventing the arc-shaped block 19 from sliding along the arc trajectory. Therefore, the arc-shaped connecting rod 16 is locked, and the baffle plate 3 cannot hinge relative to the shaft of the dual-axis bearing seat 18, thereby ensuring that the baffle plate 3 stably maintains a blocking posture perpendicular to the inclined platform 2, so that the lithium battery can accurately stop on one side of the baffle plate 3 for subsequent testing. When the testing is completed and normal unloading is required, the unloading component drives the limiting seat 20 to slide along the wall of the dual-axis bearing seat 18, so that the limiting seat 20 is disengaged from the outside of the arc-shaped block 19, releasing the restriction on the arc-shaped block 19. At this time, under the continuous action of the downward pressure generated by the weight of the lithium battery itself, the baffle plate 3 rotates around The shaft of the dual-axis bearing seat 18 deflects downward until the baffle plate 3 is fully embedded in the inner wall of the tilting platform 2 and remains parallel to the tilting platform 2, thereby releasing the obstruction to the lithium battery. The lithium battery then continues to roll down the surface of the tilting platform 2 to the bottom to complete the normal feeding. When the baffle plate 3 is deflected downward, it will compress the elastic potential energy stored in the pressure spring 17. After the lithium battery rolls completely away from the baffle plate 3, the pressure spring 17 releases the stored elastic potential energy, pushing the baffle plate 3 to rotate in the opposite direction around the shaft of the dual-axis bearing seat 18 to reset to the initial state perpendicular to the tilting platform 2. At the same time, the feeding component drives the limiting seat 20 to slide in the opposite direction and re-fit onto the outside of the arc block 19, locking the arc block 19 again, so that the baffle plate 3 returns to a stable vertical blocking posture, waiting for the next lithium battery to roll into place, thereby realizing the automatic reset and cyclic blocking of the baffle plate 3.

[0034] like Figures 7 to 8 As shown, the feeding assembly includes two transverse frames 21, which are located below the internal threaded slider 12. A wedge block 22 is slidably connected to the inner wall of one end of each transverse frame 21. A wedge block 24 is fixedly connected to the top of each limiting seat 20. A spring 23 is fixedly connected between the top of the wedge block 22 and the bottom of the transverse frame 21. The slots of the wedge block 22 and the wedge block 24 fit together.

[0035] During operation: When the two internal thread sliders 12 move laterally along the inner wall of the fixed seat 10, causing the detection head 7 to gradually approach the two ends of the lithium battery, the transverse frame 21 moves synchronously with the internal thread sliders 12 and causes the wedge block 1 22 to move together towards the limit seat 20, so that the wedge block 1 22 gradually approaches the wedge block 24 at the top of the limit seat 20. When the inclined surface of wedge block 22 first contacts the inclined surface of wedge block 24, due to the perfect fit between the two inclined surfaces, wedge block 22 is forced to slide upward along the inner wall of the transverse frame 21 under the guidance of the inclined surface of wedge block 24, and compresses spring 23 to cause elastic deformation and store energy. When wedge block 22 completely passes the inclined surface, spring 23 releases elastic potential energy to push wedge block 22 downward to reset, so that wedge block 22 is just locked into the slot of wedge block 24. In this way, wedge block 22 and wedge block 24 form a locking and limiting relationship. When the lithium battery temperature detection is normal, after the detection is completed, the internal thread slider 12 moves in the opposite direction along the inner wall of the fixed seat 10, causing the detection head 7 to gradually detach from the lithium battery. At both ends of the pool, the transverse frame 21 moves in the opposite direction following the internal thread slider 12, and through the engaging connection between the wedge block 1 22 and the wedge block 24, it drives the limiting seat 20 to slide along the wall of the dual-axis bearing seat 18, so that the limiting seat 20 gradually disengages from the outside of the arc block 19, releasing the locking restriction on the arc block 19; in this way, the baffle plate 3 is released from the restriction of downward deflection, and under the continuous downward pressure generated by the gravity of the lithium battery itself, the baffle plate 3 can automatically deflect downward around the axis of the dual-axis bearing seat 18 until it is completely embedded in the inner wall of the tilting table 2 and remains parallel to the tilting table 2, thereby releasing the obstruction to the lithium battery, and the lithium battery then continues to roll down along the surface of the tilting table 2 to the bottom to complete the normal feeding.

[0036] like Figures 7 to 8 As shown, metal gaskets 25 are fixedly connected to the top of each wedge block 22, magnet blocks 26 are fixedly installed at the bottom of each fixing seat 10, and spring 27 is fixedly connected between one side of the wedge block 24 and the wall of the double-axis bearing seat 18.

[0037] During operation: In the initial state, the metal pad 25 is located directly below the magnet block 26. When the internal thread slider 12 drives the transverse frame 21 to move closer to the limit seat 20, the metal pad 25 gradually moves away from the magnetic attraction range of the magnet block 26 along with the wedge block 22. The spring 23 returns to its free state, and the wedge block 22 is able to rise normally under the guidance of the inclined surface of the wedge block 24 and be inserted into its inner groove. When the wedge block 22 is inserted into the inner groove of the wedge block 24 and drives the limit seat 20 to slide along the wall of the double-axis bearing seat 18, the limit seat 20 is released from the outside of the arc block 19. After the locking restriction on the arc block 19 is released, the baffle plate... 3. Under the downward pressure generated by the weight of the lithium battery itself, it quickly deflects downward and opens. The lithium battery continues to roll down the surface of the inclined platform 2 to the bottom to complete the normal unloading. After the unloading operation is completed, the baffle plate 3 rotates in the opposite direction around the axis under the elastic restoring force of the pressure spring 17, returning to the initial blocking state perpendicular to the inclined platform 2. The arc block 19 then returns to its initial position. When the wedge block 22 moves back to its initial position, the magnet 26 generates a magnetic attraction force on the metal pad 25, causing the wedge block 22 to be attracted upward and move upward, thus completely disengaging from the slot of the wedge block 24 and releasing the locking relationship between the two. In this way, after losing the restriction of the wedge block 22, the wedge block 24 slides in the opposite direction along the wall of the double-axis bearing seat 18 under the elastic restoring force of the spring 27, returning to its initial position and driving the limiting seat 20 to be re-fitted onto the outside of the arc block 19, restoring the locking state of the arc block 19.

[0038] like Figures 9 to 11 As shown, the guide assembly includes two lifting columns 28, both of which are fixedly installed on the top of the detection table 1. The inner walls of the lifting columns 28 are slidably connected to convex sliders 29, and the tops of the convex sliders 29 are fixedly connected to support rods 30. The support rods 30 are located directly below the feed plate 8. The sides of the lifting columns 28 are fixedly connected to slide rod frames 32, and the slide rods of the slide rod frames 32 are slidably connected to T-shaped locking plates 31. One end of the T-shaped locking plates 31 is respectively attached to the bottom of the convex sliders 29. A hook assembly is provided on one side of the transverse frame 21, which can drive the T-shaped locking plates 31 to slide along the surface of the slide rod frame 32.

[0039] During operation: In the initial state, the support rod 30 is located directly below the feed plate 8, supporting and limiting its bottom, so that the feed plate 8 and the tilting table 2 maintain a mutually fitted and parallel relationship; at the same time, one end of the T-shaped locking plate 31 is attached to the bottom of the convex slider 29, forming a limiting block on the convex slider 29. Therefore, when the lithium battery stops on one side of the baffle plate 3 and applies downward pressure to the feed plate 8, the convex slider 29 will not slide down along the inner wall of the lifting column 28, so that the feed plate 8 can stably maintain its initial horizontal state, ensuring that the bottom of the lithium battery is stably supported. When the battery temperature monitoring is at a normal value, during the lateral movement of the transverse frame 21, the restriction on the baffle plate 3 is only released by the feeding component, allowing normal batteries to be fed normally. At this time, the hook component will not contact the T-shaped locking plate 31, the T-shaped locking plate 31 remains in place, the convex slider 29 is still limited, and the feed plate 8 maintains a horizontally fitted state. When the battery temperature monitoring is abnormal, the horizontal movement of the transverse frame 21 will not trigger the movement of the feeding component. Instead, the hook component will drive the T-shaped locking plate 31 to slide along the surface of the slide bar frame 32. After the T-shaped locking plate 31 slides, its end will disengage from the contact position with the bottom of the convex slider 29, releasing the restriction on the convex slider 29. At this time, under the downward pressure of the lithium battery, the feed plate 8 will push the support rod 30 and the convex slider 29 to slide down along the inner wall of the lifting column 28. The feed plate 8 will then tilt downward to form a slide. The lithium battery will roll along the inclined surface of the feed plate 8 and eventually enter the emergency cooling chamber 9 for forced cooling. In this way, the feed plate 8 only tilts downward to form a dedicated channel when the temperature is abnormal, while it always remains in a horizontally fitted state during normal testing. This ensures that normal batteries are smoothly fed along the surface of the inclined table 2, forming a clear physical separation from abnormal batteries, without interference between them.

[0040] like Figures 9 to 10 As shown, the hook assembly includes two connecting seats 33. The connecting seats 33 are slidably connected to the side of the dual-axis bearing seat 18. The connecting seats 33 are fixedly connected to the bottom of the internal thread slider 12. The inside of the connecting seats 33 is fixedly connected to a telescopic rod 35. One end of the telescopic rod 35 is fixedly connected to a transverse block 34. The transverse block 34 is slidably connected to the inner wall of the connecting seat 33. One side of the transverse block 34 is fixedly connected to one side of the transverse frame 21. The outside of the transverse frame 21 is fixedly connected to a connecting arm 36. One end of the connecting arm 36 is fixedly connected to a hook plate 37. One side of the T-shaped card plate 31 is fixedly connected to a beveled plate 38.

[0041] During operation: In the initial state, the transverse block 34 is located at the end of the connecting seat 33. At this time, wedge block 1 22 and wedge block 24 are in corresponding parallel positions. When the battery temperature is normal, the telescopic rod 35 does not react. The internal thread slider 12 can drive the connecting seat 33 and the transverse frame 21 to move laterally, so that wedge block 1 22 and wedge block 24 are engaged, releasing the restriction on the baffle plate 3, allowing normal batteries to continue rolling and feeding along the inclined surface of the inclined table 2. When the infrared thermal imager 5 detects an abnormal battery temperature, the tester 14 will stop powering on to perform the test. At the same time, the telescopic rod 35 will drive the transverse block 34 to slide along the inner wall of the connecting seat 33. The transverse block 34 drives the transverse frame 21 to move. The movement of the transverse frame 21 will cause wedge block 1 22 and wedge block 24 to form a misalignment relationship, no longer engaged together, and cause the connecting arm 36 and the hook plate 37 to approach the inclined plate 38 to form a contact relationship. The hook plate 37 will move laterally. The hook plate 37 hooks onto the inclined surface of the inclined plate 38. When the internal thread slider 12 moves in the opposite direction to reset, the hook plate 37 drives the T-shaped locking plate 31 to slide along the surface of the slide bar frame 32 through the inclined plate 38. This causes the end of the T-shaped locking plate 31 to disengage from the contact position with the bottom of the convex slider 29, releasing the restriction on the convex slider 29. The feed plate 8 then tilts downward under the gravity of the lithium battery, guiding the overheated battery into the emergency cooling chamber 9. During this process, because the transverse frame 21 moves in a misaligned manner relative to the internal thread slider 12, a misaligned relationship is formed between the first wedge block 22 and the second wedge block 24. The first wedge block 22 cannot be locked into the slot of the second wedge block 24, so the feeding component will not be triggered. The baffle plate 3 maintains a vertical blocking state, ensuring that the abnormal battery will not roll down the inclined table 2 and can only enter the emergency cooling channel through the feed plate 8. In this way, the extension and retraction of the telescopic rod 35 can achieve seamless switching between normal feeding and abnormal flow guidance modes. The structure is compact and the response is rapid.

[0042] like Figures 10 to 11 As shown, each of the convex sliders 29 is fixedly connected to a pressure spring 39 at its bottom. The bottom end of the pressure spring 39 is fixedly connected to the top of the detection table 1. Each of the T-shaped positioning plates 31 is fixedly connected to a spring 40 on one side. The end of the spring 40 away from the T-shaped positioning plate 31 is fixedly connected to the side of the slide bar frame 32.

[0043] During operation: When the convex slider 29 is released from its restraint, the lithium battery applies downward pressure to the surface of the feed plate 8. The feed plate 8 tilts downward around the axis of the double-axis bearing seat 18, pressing down on the support rod 30 and the convex slider 29. The convex slider 29 slides downward along the inner wall of the lifting column 28 and compresses the second pressure spring 39, causing it to elastically deform and store energy. When the lithium battery rolls along the inclined surface of the feed plate 8 into the emergency cooling chamber 9, the pressure of the lithium battery on the feed plate 8 is released. The second pressure spring 39 releases its elastic potential energy, pushing the convex slider 29 and the support rod 30 to slide upward along the inner wall of the lifting column 28 to reset. The support rod 30 pushes the feed plate 8 upward, causing it to rotate in the opposite direction around the axis of the double-axis bearing seat 18, returning to its tilted position. The inclined platform 2 is initially in a horizontal state with parallel engagement; then the telescopic rod 35 drives the transverse block 34 to move in the opposite direction along the inner wall of the connecting seat 33. The transverse block 34 drives the transverse frame 21 and the connecting arm 36 to return to their original positions. The hook plate 37 then disengages from the inclined plate 38. Under the elastic restoring force of the spring 30, the T-shaped locking plate 31 slides in the opposite direction along the surface of the slide bar frame 32, so that the end of the T-shaped locking plate 31 is once again attached to the bottom of the convex slider 29, restoring the limiting lock on the convex slider 29, ensuring that the feed plate 8 remains stably horizontally supported before the next round of testing. At this point, the entire device automatically resets after completing the emergency cooling treatment of the abnormal battery, waiting for the next lithium battery to roll into place and enter a new round of testing cycle.

[0044] like Figure 2 and Figure 4 As shown, smoke sensors 41 are symmetrically fixedly connected to the side of the gantry frame 4, and a quick-cooling plate 42 is fixedly installed at the bottom of the feed plate 8. The top of the support rod 30 is attached to the bottom of the quick-cooling plate 42, and the smoke sensor 41 is electrically connected to the quick-cooling plate 42.

[0045] During operation: When the smoke sensor 41 detects smoke from the lithium battery during the detection process, it indicates that the battery temperature has risen sharply and is prone to spontaneous combustion. At this time, the smoke sensor 41 immediately transmits the smoke signal electrically to the rapid cooling plate 42. The rapid cooling plate 42 then activates the cooling function to directly cool the lithium battery rolling on the surface of the feed plate 8, suppressing the continuous rise in battery surface temperature. When the lithium battery with abnormal temperature rolls down the surface of the feed plate 8, the battery casing maintains continuous contact with the low-temperature surface of the feed plate 8, continuously absorbing heat from the battery surface through heat conduction, effectively suppressing further rise in battery temperature, thereby preventing the battery from reaching the ignition point during the rolling process.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated testing device for the charging and discharging function of a lithium battery, comprising a testing platform, characterized in that: An inclined platform is fixedly installed above the testing table. A baffle plate is provided on the surface of the inclined platform, and the baffle plate is perpendicular to the inclined platform. A gantry frame is fixedly connected above the inclined platform, and an infrared thermal imager is fixedly installed below the gantry frame. Protective plates are symmetrically fixedly connected to the upper surface of the testing table. A portion of the top of the protective plate is designed as a bending guide. Detection heads are provided on both sides of the surface of the inclined platform. A translation component that can drive the detection heads to move laterally is provided below the detection heads. A feeding component is provided below the baffle plate. The feeding component can remove the restriction on the lithium battery by driving the baffle plate to deflect downward, allowing the lithium battery to continue rolling down the surface of the inclined platform. A guide component is provided on the surface of the inclined platform. The guide component includes a feed plate, which is embedded in the inner wall of the inclined platform. An emergency cooling chamber is provided on one side above the testing table. The guide component can guide the lithium battery to roll into the emergency cooling chamber by driving the feed plate to tilt downward. The translation component includes two fixed seats, which are fixedly connected to the inner walls of the two sides of the tilting table. A motor is fixedly installed at one end of each fixed seat, and the output shaft of each motor is fixedly connected to a threaded rod. The threaded rod is rotatably connected to the inside of the fixed seat. The outer wall of each threaded rod is threaded with an internal threaded slider. The internal threaded slider is slidably connected to and adapted to the inner wall of the fixed seat. The detection head is fixedly connected above the internal threaded slider. A double-axis bearing seat is fixedly connected to the top of the testing table. The two shafts at the top of the double-axis bearing seat are rotatably connected to the inner wall of the inclined table. One end of the baffle plate is fixedly connected to the outer wall of one of the shafts of the double-axis bearing seat. One end of the feed plate is fixedly connected to the outer wall of the other shaft of the double-axis bearing seat. An arc-shaped connecting rod is symmetrically fixedly connected to one side of the baffle plate. The arc-shaped connecting rod continuously penetrates the surface of the inclined table and the inner wall of the double-axis bearing seat. An arc-shaped block is fixedly connected to the end away from the baffle plate. A pressure spring is provided on the outside of the arc-shaped connecting rod. One end of the pressure spring is fixedly connected to the side of the baffle plate. The pressure spring penetrates the inner wall of the inclined table and the other end is fixedly connected to the side of the double-axis bearing seat. A limiting seat is fitted on the outside of the arc-shaped block. The limiting seat is slidably connected to the wall of the double-axis bearing seat. The feeding assembly includes two transverse frames, which are located below the internal threaded slider. A wedge block 1 is slidably connected to the inner wall of one end of each transverse frame, and a wedge block 2 is fixedly connected to the top of each limiting seat. A spring 1 is fixedly connected between the top of the wedge block 1 and the bottom of the transverse frame. The slots of the wedge block 1 and the wedge block 2 fit together. Metal washers are fixedly connected to the top of each wedge block one, and magnet blocks are fixedly installed at the bottom of each fixing base. A spring two is fixedly connected between one side of the wedge block two and the wall of the double-axis bearing seat. The guide assembly includes two lifting columns, both of which are fixedly installed on the top of the testing table. The inner walls of the lifting columns are slidably connected to convex sliders, and the tops of the convex sliders are fixedly connected to support rods. The support rods are located directly below the feed plate. The sides of the lifting columns are fixedly connected to slide rod frames, and the slide rods of the slide rod frames are slidably connected to T-shaped locking plates. One end of the T-shaped locking plates is respectively attached to the bottom of the convex sliders. A hook assembly is provided on one side of the transverse frame, which can drive the T-shaped locking plates to slide along the surface of the slide rod frame. The hook assembly includes two connecting seats, which are slidably connected to the side of the dual-axis bearing seat. The connecting seats are fixedly connected to the bottom of the internal threaded slider. A telescopic rod is fixedly connected inside the connecting seat. A transverse block is fixedly connected to one end of the telescopic rod. The transverse block is slidably connected to the inner wall of the connecting seat. One side of the transverse block is fixedly connected to one side of the transverse frame. A connecting arm is fixedly connected to the outer side of the transverse frame. A hook plate is fixedly connected to one end of the connecting arm. A beveled plate is fixedly connected to one side of the T-shaped locking plate.

2. The automated detection device for lithium battery charging and discharging function according to claim 1, characterized in that: A testing instrument is installed on the top of the testing platform. Wires are fixedly connected to both sides of the testing instrument. The end of the wire away from the testing instrument is fixedly connected to one side of the testing head. The infrared thermal imager is electrically connected to the testing instrument, and the testing instrument is electrically connected to the motor.

3. The automated detection device for lithium battery charging and discharging function according to claim 2, characterized in that: Each of the convex sliders is fixedly connected to a pressure spring two, the bottom end of which is fixedly connected to the top of the testing table. Each of the T-shaped positioning plates is fixedly connected to a spring three, the end of which is away from the T-shaped positioning plate is fixedly connected to the side of the slide bar frame.

4. The automated detection device for lithium battery charging and discharging function according to claim 3, characterized in that: Smoke sensors are symmetrically fixed to the sides of the gantry frame, a quick-cooling plate is fixedly installed at the bottom of the feed plate, the top of the support rod is attached to the bottom of the quick-cooling plate, and the smoke sensor is electrically connected to the quick-cooling plate.

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