Novel testing device for power battery production

Abstract

The invention belongs to the technical field of battery detection machinery, and relates to a novel testing device for power battery production, which comprises a measuring table, a blanking hole formed in the middle of the measuring table, a collecting barrel arranged below the measuring table, an upper mounting plate arranged above the measuring table, a turntable rotationally mounted on the upper mounting plate, and three supporting rods mounted on the turntable, a top suction structure is slidably mounted on each supporting rod, a first clamping structure is mounted on each supporting rod, a second clamping structure matched with the first clamping structure is mounted on the turntable, an upper conducting strip is mounted on each top suction structure, and a lower conducting strip matched with the upper conducting strip is mounted on the measuring table; a driving structure is mounted between the top suction structure and the upper mounting plate; a measuring rod is slidably mounted on each supporting rod, and a positioning structure is mounted between each measuring rod and the top suction structure; a marking part is arranged on the second clamping structure, the bulging batteries can be detected and classified, meanwhile, the batteries are marked during measurement, and the bulging state is visually displayed according to the marking state.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery detection machinery and relates to a novel testing device for power battery production. Background Art

[0002] Voltage and current testing are performed throughout multiple stages of power battery production, primarily during the formation and capacity separation phases and final testing. These testing steps are designed to ensure battery performance, consistency, and safety.

[0003] Cylindrical power batteries are characterized by their cylindrical shape, typically enclosed in a cylindrical aluminum or steel casing with spirally wound electrode materials inside. This design allows for efficient use of the casing space while maintaining high energy density and excellent heat dissipation.

[0004] Patent publication number CN118321187A discloses online testing equipment for lithium battery production. The equipment includes a conveyor mechanism, an appearance inspection module, an electrical inspection module, and a networked control platform. The conveyor mechanism includes a main body, on which the appearance inspection module and the electrical inspection module are mounted. The networked control platform is mounted on one side of the main body.

[0005] The above-mentioned existing technologies have significant deficiencies in detecting bulging batteries. For one thing, existing technologies cannot effectively sort batteries with subtle bulges; for another, they cannot mark the location of bulges. However, marking the location of bulges is crucial for subsequent endpoint detection. By detecting the location of bulges at the endpoint, production process parameters can be accurately analyzed and adjusted, and the production process can be optimized, significantly improving the battery qualification rate.

[0006] In order to solve the above problems, the present invention proposes a new type of testing device for power battery production. Summary of the Invention

[0007] In order to solve the problems existing in the background technology, the present invention proposes a new type of testing device for power battery production.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a novel power battery production testing device, comprising a measuring table, a material discharge hole is opened in the middle of the measuring table, a collection bucket is installed below the measuring table, an upper mounting plate arranged parallel to the measuring table is installed above the measuring table, a turntable is rotatably mounted on the upper mounting plate, and three support rods are evenly distributed and fixedly mounted on the circumference of the turntable; A top suction structure is slidably mounted on each of the support rods, the sliding direction of the top suction structure is arranged along the radial direction of the turntable, a first clamping structure is mounted on each of the support rods, and a second clamping structure cooperating with the first clamping structure is mounted on the turntable, the first clamping mechanism and the second clamping structure are respectively located on the inner and outer sides of the top suction structure along the radial direction of the turntable; An upper conductive sheet is installed on the top suction structure, and a lower conductive sheet that cooperates with the upper conductive sheet is installed on the measuring platform; A driving structure for driving the top suction structure to rotate around its own axis is installed between the top suction structure and the upper mounting plate; a measuring rod is slidably installed on each of the support rods, the sliding direction of the measuring rod is perpendicular to the sliding direction of the corresponding top suction structure, and a positioning structure is installed between the measuring rod and the top suction structure; a marking component is provided on the second clamping structure; When the top suction structure rotates around its own axis, the measuring rod detects the bulge of the battery, and the marking component marks the battery at the same time.

[0009] Preferably, the vertical distance between the measuring platform and the upper mounting plate is adjustable; the measuring platform and the upper mounting plate are connected by a first electric telescopic rod, the first electric telescopic rod is fixed on the upper end surface of the measuring platform, and the telescopic end of the first electric telescopic rod is fixedly connected to the upper mounting plate.

[0010] Preferably, a first conveying platform and a second conveying platform are installed on the measuring platform, and the first conveying platform, the second conveying platform and the lower conductive plate are evenly distributed along the circumferential direction of the measuring platform at the position of the measuring platform, and the lower conductive plate is located between the first conveying platform and the second conveying platform, and the conveying directions of the first conveying platform and the second conveying platform are opposite.

[0011] Preferably, a rotating shaft is coaxially fixedly mounted on the turntable, a motor is mounted on the upper mounting plate, and an output shaft of the motor is fixedly connected to the rotating shaft.

[0012] Preferably, the top suction structure comprises: a circular plate, a guide groove arranged along the radial direction of the turntable is opened on the support rod, a guide block is slidably installed in the guide groove, a second spring located in the guide groove is installed between the guide block and the end of the guide groove, one end of the second spring is fixedly connected to the end of the guide groove, and the other end of the second spring is fixedly connected to the guide block; a rotating shaft is rotatably installed on the guide block, the axis of the rotating shaft is parallel to the axis of the turntable, the circular plate is fixedly connected to the rotating shaft, the upper conductive sheet is embedded in the circular plate, and the driving structure is installed between the rotating shaft and the upper mounting plate; Suction cups, wherein a plurality of suction cups are provided and the suction cups are evenly distributed around the circumference and fixedly connected to the circular plate.

[0013] Preferably, the first clamping structure comprises: a first connecting shaft, the first connecting shaft is fixedly connected to the support rod, and the axis of the first connecting shaft is parallel to the axis of the turntable; a first connecting rod, wherein two first connecting rods are provided, both of the first connecting rods are rotatably connected to the first connecting shaft, the two first connecting rods are staggered along the axis of the support rod, and the two first connecting rods are rotatably connected via a torsion spring; The first limiting rod is provided with two first limiting rods, and the two first limiting rods correspond one to one with the first connecting rod. The first limiting rod is rotatably mounted on the end of the corresponding first connecting rod away from the first connecting shaft, and the axis of the first limiting rod is parallel to the axis of the first connecting shaft.

[0014] Preferably, the second clamping structure comprises: a second connecting shaft, the second connecting shaft is fixedly connected to the turntable, and the axis of the second connecting shaft is parallel to the axis of the turntable; A second connecting rod, wherein two second connecting rods are provided, each of the two second connecting rods is rotatably connected to the second connecting shaft, the two second connecting rods are staggered along the axis of the support rod, and the two second connecting rods are rotatably connected via a torsion spring; a second limiting rod, wherein two second limiting rods are provided, the two second limiting rods corresponding to the second connecting rod one-to-one, the second limiting rods being rotatably mounted on the corresponding second connecting rod at an end away from the second connecting shaft, and the axis of the second limiting rod is parallel to the axis of the second connecting shaft; The marking component is arranged on the second limiting rod, and the marking component is arranged as a sponge ring, and the sponge ring is wrapped around the outside of the second limiting rod.

[0015] Preferably, the driving structure includes: a cylindrical gear, the cylindrical gear is fixedly connected to the rotating shaft on the circular plate, the cylindrical gear and the circular plate are respectively arranged on both sides of the support rod, the circular plate is located on the side close to the measuring platform, and the cylindrical gear is located on the side away from the measuring platform; An incomplete internal gear ring is fixedly mounted on the upper mounting plate, and the cylindrical gear is meshed with the incomplete internal gear ring for transmission.

[0016] Preferably, a connecting rod is slidably mounted on the side of the support rod, the sliding direction of the connecting rod is perpendicular to the length direction of the guide groove, the connecting rod is configured to be L-shaped, and one end of the connecting rod away from the support rod is fixedly connected to the measuring rod; The positioning structure includes: a positioning block, the positioning block is fixedly mounted on the end of the connecting rod away from the measuring rod, and the positioning block is located in the guide groove; A positioning groove, the positioning groove being provided at an end portion of the guide block close to the positioning block, the positioning groove being matched with the positioning block; The first spring is sleeved on the connecting rod, one end of the first spring is fixedly connected to the connecting rod, and the other end of the first spring is fixedly connected to the supporting rod.

[0017] Preferably, a support plate is vertically slidably installed in the collection bucket, an elastic rod is installed between the support plate and the bottom of the collection bucket, the elastic rod is fixedly installed in the collection bucket, and the telescopic shaft end of the elastic rod is fixedly connected to the lower end surface of the support plate; An arc-shaped groove is opened on one side of the collecting barrel, and a third conveying platform corresponding to the arc-shaped groove is installed on the collecting barrel, and the third conveying platform conveys in a direction away from the collecting barrel; A mounting seat is fixedly mounted on the side wall of the collecting bucket on the opposite side to the arc-shaped groove, and a second electric telescopic rod is fixedly mounted on the mounting seat. The telescopic direction of the second electric telescopic rod is the same as the conveying direction of the third conveying platform, and the telescopic end of the second electric telescopic rod is fixedly mounted with an arc-shaped top block which is slidably connected to the collecting bucket.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The design of the first and second conveyor platforms enables automatic battery loading and sorting. The first conveyor platform transports batteries to the measurement position, and the second conveyor platform transports the tested batteries away from the measurement platform. The entire process requires no human intervention, improving production efficiency. Multiple support rods are installed on the turntable, each equipped with a suction mechanism, clamping structure, and measuring rods, enabling simultaneous testing of multiple batteries, improving inspection efficiency.

[0019] 2. By adjusting the telescopic length of the first electric telescopic rod, it can adapt to batteries of different heights.

[0020] 3. The measuring rod inspects the outer cylindrical surface of the battery, while the sponge ring on the second limiting rod marks the battery surface. The depth of the mark's color provides a visual indicator of the battery's bulging status and size, facilitating subsequent inspection and adjustment of production parameters. When a severely bulging battery is detected, the device automatically pushes it into a collection bin and transfers it to the third conveyor station for subsequent processing, eliminating the tedious and inaccurate manual separation. Batteries without bulging or with subtle bulging can pass smoothly from the second conveyor station to the measuring station and enter the normal subsequent process, ensuring the continuity of the production process.

[0021] 4. Through the cooperation of the upper conductive sheet and the lower conductive sheet, the battery parameters such as voltage, current and resistance can be accurately measured, providing comprehensive data support for battery quality assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic structural diagram of the connection between the cylindrical gear, the rotating shaft, the rotating disk and the supporting rod of the present invention; Figure 3 This is a structural schematic diagram of the first clamping structure and the second clamping structure of the present invention installed on the upper mounting plate; Figure 4 This is a structural schematic diagram of the top suction structure of the present invention being installed on an upper mounting plate; Figure 5 This is a schematic structural diagram of the first clamping structure and the second clamping structure of the present invention when clamping a battery; Figure 6 is a schematic cross-sectional view of the connection between the first connecting shaft and the first connecting rod of the present invention; Figure 7 This is a schematic diagram of the structure of the installation between the positioning structure and the connecting rod of the present invention; Figure 8 This invention Figure 7 A partial enlarged view of point A in the middle; Figure 9 This is a schematic structural diagram of the connection between the measuring platform and the collecting bucket of the present invention; Figure 10 It is a schematic structural diagram of the connection between the collecting bucket and the third conveying platform of the present invention; Figure 11 This is a structural schematic diagram of the battery clamping process of the present invention; Figure 12 This is a schematic diagram of the state of the bulged battery of the present invention moving toward the discharge hole Figure 13 It is a schematic diagram of the position of the marking bulge of the present invention.

[0023] In the figure: 1. Measuring platform; 2. Upper mounting plate; 3. First electric telescopic rod; 4. Collecting bucket; 5. Incomplete inner ring gear; 6. Cylindrical gear; 7. Rotating shaft; 8. Turntable; 9. Support rod; 10. Guide groove; 11. Guide block; 12. Circular plate; 13. Suction cup; 14. First connecting shaft; 15. First connecting rod; 16. First limiting rod; 17. Second connecting shaft; 18. Second connecting rod; 19. Second limiting rod; 20. Measuring rod; 21. Connecting rod; 22. Positioning groove; 23. Positioning block; 24. First spring; 25. Second spring; 26. First conveying platform; 27. Second conveying platform; 28. Upper conductive sheet; 29. Lower conductive sheet; 30. Connecting line; 31. Feeding hole; 32. Arc groove; 33. Third conveying platform; 34. Ball bearing; 35. Battery. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1-13 As shown, the present invention employs the following technical solution: a novel testing device for power battery production. The device comprises a measuring platform 1. A discharge hole 31 is defined in the center of the platform, and a collection bucket 4 is mounted below the platform. The collection bucket 4 is used to collect bulging batteries 35 that have been inspected.

[0026] like Figure 1 As shown, an upper mounting plate 2 is mounted above the measuring platform 1, parallel to the measuring platform 1. The vertical distance between the upper mounting plate 2 and the measuring platform 1 is adjustable. The measuring platform 1 and the upper mounting plate 2 are connected by a first electric telescopic rod 3. The first electric telescopic rod 3 is fixed to the upper end surface of the measuring platform 1, and the telescopic end of the first electric telescopic rod 3 is fixedly connected to the upper mounting plate 2.

[0027] According to the height of different types of batteries 35, the telescopic length of the first electric telescopic rod 3 is adjusted so that the distance between the measuring platform 1 and the upper mounting plate 2 matches the type of battery 35 to be tested.

[0028] A turntable 8 is rotatably mounted on the upper mounting plate 2. Three support rods 9 are evenly distributed and fixedly mounted on the turntable 8.

[0029] Specifically, a rotating shaft 7 is coaxially fixedly mounted on the rotating disk 8. A motor is mounted on the upper mounting plate 2, and an output shaft of the motor is fixedly connected to the rotating shaft 7.

[0030] Start the motor, and the motor drives the turntable 8 to rotate together via the rotating shaft 7.

[0031] A top suction structure is slidably mounted on each of the support rods 9. The sliding direction of the top suction structure is arranged along the radial direction of the turntable 8. A first clamping structure is mounted on each of the support rods 9. A second clamping structure cooperating with the first clamping structure is mounted on the turntable 8. The first clamping mechanism and the second clamping structure are respectively located on the inner and outer sides of the top suction structure along the radial direction of the turntable 8. The top suction structure, the first clamping structure and the second clamping structure jointly clamp the battery 35. When the turntable 8 rotates, the clamped battery 35 is driven to rotate together by the support rods 9, and the battery 35 is transported to different workstations and inspected.

[0032] An upper conductive sheet 28 is installed on the top suction structure, and a lower conductive sheet 29 that cooperates with the upper conductive sheet 28 is installed on the measuring platform 1 .

[0033] When the battery 35 rotates with the turntable 8 to a position opposite to the lower conductive sheet 29 , the upper conductive sheet 28 and the lower conductive sheet 29 cooperate to measure the voltage, current, resistance and other values of the battery 35 .

[0034] A driving structure is installed between the top suction structure and the upper mounting plate 2, and the driving structure drives the top suction structure to rotate around the axis of the upper mounting plate 2. A marking component is provided on the second clamping structure.

[0035] A measuring rod 20 is slidably mounted on each support rod 9. The sliding direction of the measuring rod 20 is perpendicular to the sliding direction of the top suction structure. A positioning structure is installed between the measuring rod 20 and the top suction structure.

[0036] When the turntable 8 rotates, it drives the top suction structure to rotate together. At the same time, under the action of the driving structure, the top suction structure drives the battery 35 to rotate around its own axis. During this process, the measuring rod 20 detects the bulging condition of the battery 35, and the marking component marks the battery 35.

[0037] When the top suction structure rotates around its own axis and the measuring rod 20 detects the bulge in the circumferential direction of the battery 35: During the inspection of a bulging battery 35, the bulge pushes the measuring rod 20 away from the support rod 9. At this point, the positioning structure releases the top suction structure, and the top suction structure, the first clamping structure, and the second clamping structure cooperate to push the battery 35 toward the axis of the upper mounting plate 2, and ultimately push the battery 35 into the collection bucket 4.

[0038] For a battery 35 without bulge, after the battery 35 rotates with the turntable 8 and is tested, the battery 35 will move away from the position of the axis of the upper mounting plate 2 and out of the measuring platform 1.

[0039] By using the above method, it is possible to effectively separate the swollen batteries 35 from the non-swollen batteries 35 .

[0040] In order to continuously load the batteries 35 onto the measuring table 1 for testing and to transport the batteries 35 without bulges away from the measuring table 1, the following solutions can be used: A first conveyor platform 26 and a second conveyor platform 27 are mounted on the measuring platform 1. The first conveyor platform 26 and the second conveyor platform 27 have opposite conveying directions. The first conveyor platform 26 conveys batteries 35 toward the measuring platform 1, transporting them to the loading position. A pusher mechanism is provided on the first conveyor platform 26 near the measuring platform 1 to push the batteries 35 onto the measuring platform 1. This pusher mechanism is well known to those skilled in the art and will not be described in detail here.

[0041] The second conveyor 27 conveys in a direction away from the measuring table 1 and is used to convey the batteries 35 without bulging from the measuring table 1 to subsequent processes or a temporary storage area, thereby achieving the loading and testing of the batteries 35 and the conveying and separation of the batteries 35 without bulging.

[0042] Further, such as Figure 9 As shown: the first conveying platform 26, the second conveying platform 27 and the lower conductive sheet 29 are evenly distributed along the circumferential direction of the measuring platform 1 at the position of the measuring platform 1. Figure 9 In the figure, the arrow direction represents the rotation direction of the turntable 8 driving the battery 35. The battery 35 that meets the standard passes through the first conveying platform 26, the lower conductive sheet 29 and the second conveying platform 27 in sequence.

[0043] When one of the support rods 9 rotates to a position opposite to the first conveying platform 26, the pushing mechanism transfers the battery 35 on the first conveying platform 26 toward the direction close to the measuring platform 1, and transfers the battery 35 to between the corresponding top suction structure, the first clamping structure and the second clamping structure. Subsequently, the turntable 8 starts to rotate, driving the clamped battery 35 for inspection.

[0044] To reduce friction between the battery 35 and the measuring platform 1 when the top suction structure, first clamping structure, and second clamping structure drive the battery 35, balls 34 are evenly distributed on the upper surface of the measuring platform 1. The rolling connection between the balls 34 and the measuring platform 1 allows the battery 35 to slide smoothly on the measuring platform 1 during movement, thereby reducing frictional resistance. The balls 34 are made of an insulating, wear-resistant material.

[0045] The top suction structure includes a circular plate 12 and a suction cup 13 .

[0046] Specifically, a guide block 11 is slidably mounted on the support rod 9, and a rotating shaft is rotatably mounted on the guide block 11, wherein the axis of the rotating shaft is parallel to the axis of the turntable 8. The circular plate 12 is fixedly connected to the rotating shaft.

[0047] A plurality of suction cups 13 are provided, and the suction cups 13 are evenly distributed along the circumference of the circular plate 12. The suction cups 13 are fixedly connected to the circular plate 12.

[0048] The suction cup 13 is made of rubber, which has good flexibility and a moderate friction coefficient, and can effectively absorb the battery 35 while avoiding damage to its surface.

[0049] In addition, the suction force of the suction cup 13 on the battery 35 is designed to be smaller than the weight of the battery 35 .

[0050] When the battery 35 is positioned on the measuring platform 1 and supported by the ball bearings 34 on the measuring platform 1, the suction force of the suction cup 13 is sufficient to keep the battery 35 relatively fixed to the suction cup 13. At this point, when the suction cup 13 rotates along with the circular plate 12 about its axis, it can drive the battery 35 to rotate together, ensuring a smooth test process.

[0051] When the battery 35 is not supported by the measuring platform 1, for example, when the battery 35 needs to be released after the measurement is completed, the battery 35 will naturally separate from the suction cup 13 under the action of its own gravity. At this time, the ceiling structure releases the battery 35, and the battery 35 can be smoothly taken away by the subsequent conveying device.

[0052] Furthermore, the height of the second conveyor platform 27 is lower than the height of the upper end surface of the ball bearing 34, and the end of the second conveyor platform 27 near the axis of the turntable 8 extends toward the measuring platform 1. When the battery 35 rotates above the second conveyor platform 27 with the top suction structure, the weight of the battery 35 causes the battery 35 to move downward, allowing the battery 35 to fall into the second conveyor platform 27. The second conveyor platform 27 then transports the tested battery 35 away from the measuring platform 1.

[0053] The first clamping structure includes a first connecting shaft 14 , a first connecting rod 15 and a first limiting rod 16 .

[0054] The first connecting shaft 14 is fixedly connected to the support rod 9. The first connecting shaft 14 is arranged at the end of the support rod 9 away from the turntable 8. The axis of the first connecting shaft 14 is parallel to the axis of the turntable 8.

[0055] The number of the first connecting rods 15 is two. Both of the first connecting rods 15 are rotationally connected to the first connecting shaft 14. The two first connecting rods 15 are staggered along the axis of the support rod 9 and are rotationally connected via a torsion spring.

[0056] like Figure 6As shown, the ends of the first connecting rod 15 close to the first connecting shaft 14 are fixedly installed with rings, and the rings are rotatably connected to the first connecting shaft 14. The rings of the two first connecting rods 15 are staggered along the axial direction of the first connecting shaft 14, and the end faces of the two rings close to each other are provided with mounting grooves. The torsion spring is mounted on the first connecting shaft 14 and the torsion spring is located in the mounting groove. One end of the torsion spring is fixedly connected to the ring of one of the first connecting rods 15, and the other end of the torsion spring is fixedly connected to the ring of the other first connecting rod 15.

[0057] Two first limiting rods 16 are provided. The two first limiting rods 16 correspond one to one with the first connecting rod 15. Each first limiting rod 16 is rotatably mounted on the corresponding first connecting rod 15 at an end away from the first connecting shaft 14. The axis of the first limiting rod 16 is parallel to the axis of the first connecting shaft 14.

[0058] The second clamping structure includes a second connecting shaft 17 , a second connecting rod 18 and a second limiting rod 19 .

[0059] The second connecting shaft 17 is fixedly connected to the turntable 8 , and the axis of the second connecting shaft 17 is parallel to the axis of the turntable 8 .

[0060] The second connecting rods 18 are provided in pairs. Both second connecting rods 18 are rotatably connected to the second connecting shaft 17. The two second connecting rods 18 are staggered along the axis of the support rod 9. The two second connecting rods 18 are connected by a torsion spring. The connection structure between the two second connecting rods 18 is the same as the connection structure between the two first connecting rods 15. Figure 6 The connection between the two first connecting rods 15 and the first connecting shaft 14 is given in FIG. In this embodiment, the connection structure between the two second connecting rods 18 and the second connecting shaft 17 is not repeated.

[0061] Two second limiting rods 19 are provided, one corresponding to each second connecting rod 18. Each second limiting rod 19 is rotatably mounted on the corresponding second connecting rod 18 at an end thereof away from the second connecting shaft 17. The axis of each second limiting rod 19 is parallel to the axis of the second connecting shaft 17.

[0062] like Figure 11 As shown, Figure 11 A schematic diagram of the states of the first limiting rod 16 and the second limiting rod 19 during the process of clamping the battery 35 is provided. Figure 11 .a is a schematic diagram of a state in which the two first limiting rods 16 and the two second limiting rods 19 are located close to each other. Figure 11 .b is a schematic diagram of a state in which the distance between the two first limiting rods 16 is equal to the diameter of the battery 35. Figure 11.c is a schematic diagram of the state when the two first limiting rods 16 and the two second limiting rods 19 jointly clamp the battery 35.

[0063] The two first limiting rods 16 and the two second limiting rods 19 are both located close to each other, and at this time the two torsion springs are in an undeformed state.

[0064] When one of the support rods 9 is opposite to the first conveying platform 26, the pushing mechanism conveys the battery 35 on the first conveying platform 26 toward the measuring platform 1 so as to clamp the battery 35. The specific installation process is as follows: The pushing mechanism pushes the battery 35 from the end closest to the first connecting shaft 14 toward the end closest to the axis of the turntable 8. During this process, the arcuate surface of the battery 35 contacts the outer circular surfaces of the two first limiting rods 16, gradually pushing the two first limiting rods 16 to rotate about the first connecting shaft 14 and away from each other. As the first limiting rods 16 rotate, the torsion springs mounted on the first connecting shaft 14 are subjected to torsion and deform. Simultaneously, the two first limiting rods 16 exert resistance on the battery 35 away from the turntable 8. When the battery 35 moves to a position where the distance between the two first limiting rods 16 is maximized, that is, the distance between the two first limiting rods 16 is equal to the diameter of the battery 35, the battery 35 continues to move toward the axis of the turntable 8. At this point, under the torsion force of the torsion springs mounted on the first connecting shaft 14, the two first limiting rods 16 rotate toward each other, exerting a compressive force on the battery 35 toward the axis of the turntable 8.

[0065] As the battery 35 continues to move toward the axis of the turntable 8, the arcuate surface of the battery 35 contacts the outer surfaces of the two second limiting rods 19, gradually pushing the two second limiting rods 19 to rotate about the second connecting shaft 17 and move away from each other. The torsion springs on the second connecting shaft 17 are then subjected to torsion and deform. At this point, the elastic force of the torsion springs exerts a compressive force on the battery 35, pushing it away from the axis of the turntable 8.

[0066] Finally, the two first limiting rods 16 and the two second limiting rods 19 squeeze and limit the battery 35 at the same time, thereby achieving clamping and positioning of the battery 35 .

[0067] The upper conductive sheet 28 is embedded in the circular plate 12. When the top suction structure, the first clamping structure, and the second clamping structure cooperate to clamp the battery 35, the electrode of the battery 35 on the side closest to the upper mounting plate 2 tightly fits against the upper conductive sheet 28. As a preferred design, both the upper conductive sheet 28 and the lower conductive sheet 29 are made of elastic conductive material. This elastic design ensures good contact between the conductive sheet and the battery 35 electrodes, while accommodating battery 35 electrodes of varying sizes and shapes, improving the stability and reliability of the conductive performance.

[0068] In addition, a conductive rod can be extended upward from the upper conductive sheet 28, and a conductive ring can be provided on the upper mounting plate 2. During the rotation of the conductive rod with the circular plate 12, the conductive rod always contacts the conductive ring, thereby enabling detection of the battery 35. The structure of the conductive rod and the conductive ring is related to the prior art and is not shown in the drawings of the present specification.

[0069] The sliding direction of the guide block 11 is arranged along the radial direction of the turntable 8 .

[0070] Specifically, the support rod 9 defines a guide groove 10 extending radially along the turntable 8. The guide block 11 is slidably mounted within the guide groove 10. A second spring 25 is mounted between the guide block 11 and the end of the guide groove 10 and positioned within the guide groove 10. One end of the second spring 25 is fixedly connected to the end of the guide groove 10, and the other end of the second spring 25 is fixedly connected to the guide block 11.

[0071] A connecting rod 21 is slidably mounted on the side of the support rod 9. The connecting rod 21 includes a horizontal rod and a vertical rod, the ends of which are fixedly connected. The horizontal rod and the vertical rod give the connecting rod 21 an L-shape. The horizontal rod of the connecting rod 21 is slidably connected to the support rod 9, and the horizontal rod of the connecting rod 21 is slidably connected to the support rod 9. The vertical rod coincides with the axis of the measuring rod 20, and the end of the vertical rod away from the horizontal rod is fixedly connected or rotationally connected to the measuring rod 20.

[0072] The positioning structure is installed between the cross bar of the connecting rod 21 and the top suction structure.

[0073] like Figure 7 and Figure 8 As shown, the positioning structure includes: a positioning block 23 and a first spring 24 .

[0074] The sliding direction of the connecting rod 21 is perpendicular to the length direction of the guide groove 10. The positioning block 23 is located in the guide groove 10 and is fixedly connected to the end of the cross bar away from the vertical bar. The positioning block 23 is slidably connected to the side wall of the support rod 9.

[0075] The first spring 24 is sleeved on the cross bar of the connecting rod 21 , one end of the first spring 24 is fixedly connected to the cross bar, and the other end of the first spring 24 is fixedly connected to the support rod 9 .

[0076] The end of the guide block 11 close to the positioning block 23 is provided with a positioning groove 22. The positioning groove 22 is engaged with the positioning block 23. The end of the positioning block 23 away from the first spring 24 is configured as an arc surface.

[0077] When the positioning block 23 is located in the positioning groove 22 , the second spring 25 is in a stretched state, and the first spring 24 is in a natural state.

[0078] Before measurement, the crossbar length of connecting rod 21 is designed based on the dimensions of the battery 35 being measured, ensuring that the measuring rod 20 closely abuts the outer circumference of the battery 35. During measurement, if a bulge develops on the battery 35, the bulge pushes the measuring rod 20 away from the axis of the circular plate 12. At this point, the measuring rod 20, via the connecting rod 21, drives the positioning block 23 away from the positioning slot 22 until the positioning block 23 is completely free of the positioning slot 22. During this process, the first spring 24 is subjected to tension and deforms.

[0079] When the positioning block 23 moves out of the positioning slot 22, the guide block 11, under the pulling force of the second spring 25, moves toward the axis of the turntable 8, thereby moving the battery 35 as a whole toward the discharge hole 31. When the positioning block 23 and the guide block 11 are offset, the elastic force of the first spring 24 forces the positioning block 23 to move toward the guide slot 10, completing the reset action.

[0080] The driving structure is installed between the rotating shaft and the upper mounting plate 2. When the turntable 8 drives the support rod 9 and the battery 35 to rotate around the axis of the turntable 8, the driving structure drives the top suction structure to rotate around its own axis.

[0081] The driving structure includes: a cylindrical gear 6 and an incomplete internal gear ring 5.

[0082] The cylindrical gear 6 is fixedly connected to the rotating shaft on the circular plate 12. The cylindrical gear 6 and the circular plate 12 are respectively arranged on both sides of the support rod 9. The circular plate 12 is located on the side close to the measuring platform 1, and the cylindrical gear 6 is located on the side away from the measuring platform 1.

[0083] The incomplete inner gear ring 5 is fixedly mounted on the upper mounting plate 2. The cylindrical gear 6 is meshed with the incomplete inner gear ring 5 for transmission. The projection of the toothed portion of the incomplete inner gear ring 5 on the measuring platform 1 is located between the lower conductive sheet 29 and the second conveying platform 27.

[0084] After measuring parameters such as voltage and current, the turntable 8 continues to rotate the battery 35 around its axis. During this process, the cylindrical gear 6 meshes with the teeth of the incomplete internal gear ring 5, causing the cylindrical gear 6 to rotate around its own axis. The cylindrical gear 6, via its rotating shaft, drives the circular plate 12 in conjunction with the rotation, which in turn drives the battery 35 around its axis. The rotation of the battery 35 around the axis of the circular plate 12 allows the measuring rod 20 to contact different locations on the outer circumference of the battery 35, thereby enabling testing at different locations on the outer circumference of the battery 35.

[0085] The marking component is provided on the second limiting rod 19, specifically a sponge ring, which is wrapped around the outside of the second limiting rod 19. This design utilizes the softness and adsorption properties of the sponge ring to mark the surface of the battery 35 without damaging the surface of the battery 35.

[0086] The measuring rod 20 is located close to one of the second limiting rods 19 , which ensures that the measuring rod 20 can contact the outer circumferential surface of the battery 35 during the measurement process, and the marking component can also mark the battery 35 .

[0087] During the test, paint is first sprayed onto the sponge ring. When the battery 35 rotates, the sponge ring on the second limit rod 19 will contact the surface of the battery 35 and mark its surface. At the same time, the measuring rod 20 will detect the marked position.

[0088] Figure 13 The diagram shows a sponge ring marking the position of the bulge of the battery 35. The arrow in the figure indicates the rotation direction of the battery 35, and the dotted line in the figure represents the unmarked area near the bulge. Figure 13 .a and 13.b are schematic diagrams showing the marking status of the battery 35 near the circumferential direction of the bulge position. Figure 13 .c shows a schematic diagram of the marking status of the bulge position of the battery 35 along the axis direction of the battery 35.

[0089] During marking, if there is a bulge on the surface of the battery 35, the bulge will cause the second limiting rod 19 to rotate away from the battery 35. Due to this rotation, the area near the bulge along the axis of the battery 35 may not be marked, or the marking color may be relatively light. This phenomenon can intuitively demonstrate the bulge status of the battery 35 and the approximate size of the bulge.

[0090] At the same time, due to the presence of the bulge, when the sponge ring contacts the bulge position of the battery 35, the sponge ring cannot contact the battery surface in the area near the circumference of the bulge of the battery 35, which will also make the mark color of the area near the circumference of the bulge of the battery 35 lighter or cannot be marked.

[0091] By observing the depth of the marking color, the marked area surrounded by lighter or unmarked areas indicates the location of the bulge in the battery 35. This allows a clear determination of whether the battery 35 has bulges, as well as the specific location and severity of the bulge. Subsequently, the battery can be inspected based on the marking status and, based on the bulge status indicated by the marking, process parameters can be adjusted in a timely manner, effectively preventing bulges and improving product quality and production efficiency.

[0092] When the battery 35 is severely bulging, causing the measuring rod 20 to move a large distance, the measuring rod 20 will drive the positioning block 23 to move away from the positioning slot 22. At this time, the positioning block 23 will release the constraint on the guide block 11. Under the elastic force of the second spring 25, the top suction structure will drive the battery 35 to move toward the discharge hole 31, thereby guiding the severely bulging battery 35 to the discharge hole 31 for subsequent processing or classification. This mechanism can effectively identify and separate batteries 35 with severe bulging conditions, ensuring quality control of subsequent production processes.

[0093] like Figure 12 As shown, Figure 12 .a is a schematic diagram of the state when the battery 35 is separated from the first limiting rod 16. Figure 12 .b is a schematic diagram of the state in which the battery 35 is separated from the first limiting rod 16 and the second limiting rod 19 pushes the battery 35 toward the discharge hole 31. Figure 12 .c is a schematic diagram of the state when the battery 35 is separated from the second limiting rod 19.

[0094] When the battery 35 moves toward the discharge hole 31, the first clamping structure and the second clamping structure work as follows: Initially, the first limiting rods 16 function as follows: Due to the torsion force of the torsion spring mounted on the first connecting shaft 14, the two first limiting rods 16 tend to rotate toward each other. When the battery 35 initially begins to move, the first limiting rods 16 contact the battery 35, exerting a force on the battery 35 toward the discharge hole 31.

[0095] As the battery 35 continues to move, it overcomes the force of the torsion spring mounted on the second connecting shaft 17, increasing the distance between the two second limiting rods 19. When the diameter of the battery 35 matches the distance between the two second limiting rods 19, the second limiting rods 19 begin to assist in pushing the battery 35 toward the discharge hole 31. At this point, the two second limiting rods 19, under the action of the torsion spring mounted on the second connecting shaft 17, exert a force on the battery 35 toward the discharge hole 31. This force acts in the same direction as the first limiting rod 16, further assisting in pushing the battery 35 toward the discharge hole 31.

[0096] Throughout the entire movement process, the two first limiting rods 16 and the two second limiting rods 19 work together. The first limiting rods 16 initially provide thrust, overcoming the resistance created by the second limiting rods 19. The second limiting rods 19 then redirect their force on the battery 35, ensuring smooth and efficient movement of the battery 35 toward the feed hole 31. This design fully utilizes the elastic force of the torsion spring, enabling the first and second limiting rods 16, 19 to not only position and clamp the battery 35 but also provide auxiliary thrust during its movement, ensuring smooth and reliable operation.

[0097] An arcuate groove 32 is formed on one side of the collecting barrel 4. A third conveying platform 35 corresponding to the arcuate groove 32 is mounted on the collecting barrel 4. The third conveying platform 35 conveys in a direction away from the collecting barrel 4.

[0098] Furthermore, the end surface of the measuring platform 1 near the discharge hole 31 is designed as a tapered slope, wherein the outer side of the tapered slope is higher than the inner side. When the battery 35 is pushed toward the discharge hole 31 by the top suction structure, the guiding effect of the tapered slope allows the battery 35 to slide smoothly along the slope and eventually slide into the discharge hole 31.

[0099] After the battery 35 slides into the discharge hole 31 , it falls onto the third conveying platform 35 , and the third conveying platform 35 conveys the battery 35 to a subsequent process or a designated location.

[0100] The process of using this application is as follows: First, device initialization Before use, the connecting rod 21 is installed on the supporting rod 9 according to the model of the battery 35 , and the length of the cross bar of the connecting rod 21 is selected appropriately so that the measuring rod 20 can be in close contact with the outer circumference of the battery 35 .

[0101] Second, battery 35 loading and initial positioning The battery 35 to be tested is placed on the first conveying platform 26 . The first conveying platform 26 conveys the battery 35 toward the measuring platform 1 .

[0102] When one of the support rods 9 is opposite to the first conveying platform 26, the pushing mechanism conveys the battery 35 toward the measuring platform 1 for installation. The specific installation process is as follows: The pushing mechanism pushes the battery 35 from the end close to the first connecting shaft 14 to the end close to the axis of the turntable 8. During this process, the arc surface of the battery 35 contacts the outer circular surfaces of the two first limiting rods 16, and gradually pushes the two first limiting rods 16 to rotate around the first connecting shaft 14 and move away from each other. As the first limiting rods 16 rotate, the torsion spring mounted on the first connecting shaft 14 is deformed by the torsion force. At the same time, the two first limiting rods 16 apply resistance to the battery 35 in the direction away from the turntable 8. When the battery 35 moves to a position where the distance between the two first limiting rods 16 is maximized, that is, the distance between the two first limiting rods 16 is equal to the diameter of the battery 35, the battery 35 continues to move toward the axis of the turntable 8. At this time, under the torsion force of the torsion spring, the two first limiting rods 16 rotate toward each other and apply a squeezing force to the battery 35 in the direction close to the axis of the turntable 8.

[0103] As the battery 35 continues to move toward the axis of the turntable 8, the arcuate surface of the battery 35 contacts the outer surface of the second limiting rods 19, gradually pushing the two second limiting rods 19 away from each other. The torsion springs are then subjected to torsion and deform. At this point, the two second limiting rods 19, under the elastic force of the torsion springs, exert a compressive force on the battery 35 away from the axis of the turntable 8.

[0104] Finally, the two first limiting rods 16 and the two second limiting rods 19 squeeze and limit the battery 35 at the same time, thereby achieving clamping and positioning of the battery 35 .

[0105] During this process, the top of the battery 35 presses against the suction cup 13 and is sucked by the suction cup 13. At the same time, the electrodes of the battery 35 are attached to the upper conductive sheet 28.

[0106] Third, electrical parameter detection The motor connected to turntable 8 is activated, causing it to rotate intermittently. When upper conductive sheet 28 rotates with turntable 8 to lie above lower conductive sheet 29, the electrode of battery 35, located away from upper conductive sheet 28, comes into contact with lower conductive sheet 29. The measuring instrument then measures the electrical parameters of battery 35.

[0107] Fourth, bulge detection After the electrical parameter measurement is complete, battery 35 continues to rotate with turntable 8. During this rotation, cylindrical gear 6 contacts the teeth of the incomplete internal gear ring 5, causing cylindrical gear 6 to rotate about its own axis. Cylindrical gear 6, via its rotating shaft, drives circular plate 12 in conjunction with the rotation, which in turn drives battery 35 around its axis. As battery 35 rotates around circular plate 12, measuring rod 20 contacts different locations on the outer surface of battery 35, performing a visual inspection.

[0108] At the same time, the sponge ring on the second limiting rod 19 marks the surface of the battery 35. When the sponge ring contacts the raised portion of the battery 35, the raised portion of the battery 35 causes the second limiting rod 19 to rotate away from the battery 35, resulting in the position near the raised portion along the axis being unmarked or having a lighter mark color.

[0109] At the same time, due to the presence of the bulge, when the sponge ring contacts the bulge position of the battery 35, the sponge ring cannot contact the surface of the battery 35 near the circumferential direction of the bulge, which will also make the mark color of the area near the circumferential direction of the battery 35 lighter or cannot be marked.

[0110] By observing the depth of the marking color, the marked area surrounded by lighter or unmarked areas is the area where the bulge of the battery 35 is located. This can intuitively display the bulge status and size of the battery 35, facilitating subsequent inspection and adjustment of processing parameters to prevent bulges in subsequent batches of batteries 35.

[0111] Fifth, battery 35 sorting and unloading Treatment of severely swollen battery 35: When the bulge is severe, causing the measuring rod 20 to move a significant distance, it drives the positioning block 23 away from the positioning slot 22, releasing the guide block 11. Under the force of the second spring 25, the top suction mechanism drives the battery 35 toward the discharge hole 31. During this movement, the first and second limiting rods 16 and 19, each driven by a torsion spring, push the battery 35 toward the discharge hole 31, assisting its movement.

[0112] When the battery 35 is pushed by the top suction structure to the vicinity of the discharge hole 31, under the action of the conical inclined surface, the battery 35 slides along the inclined surface into the discharge hole 31. After the battery 35 slides into the discharge hole 31, the battery 35 falls into the third conveying platform 35 and is conveyed to the subsequent processing step.

[0113] Normal battery 35 processing: For batteries 35 that have no bulging or have inconspicuous bulging, they rotate with the top suction structure to the top of the second conveyor 27. Under the action of their own gravity, the batteries 35 move downward and fall into the second conveyor 27. They are then transported away from the measuring table 1 by the second conveyor 27 and enter the subsequent normal process.

[0114] Similarly, when the battery 35 moves away from the measuring platform 1 , the second limiting rod 19 and the first limiting rod 16 , under the action of the torsion spring, respectively apply a thrust to the battery 35 away from the measuring platform 1 , thereby assisting the battery 35 in moving.

[0115] Through the above principles, the present application can realize automatic loading, positioning, detection, marking, sorting and unloading of batteries 35, improve detection efficiency and accuracy, and at the same time provide data support for subsequent production and optimize the production process.

[0116] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of testing device for power battery production, comprising a measuring table (1), characterized in that: A discharge hole (31) is provided in the middle of the measuring platform (1), a collecting bucket (4) is installed below the measuring platform (1), an upper mounting plate (2) arranged parallel to the measuring platform (1) is installed above the measuring platform (1), a turntable (8) is rotatably mounted on the upper mounting plate (2), and three support rods (9) are evenly distributed and fixedly mounted on the circumference of the turntable (8); A top suction structure is slidably mounted on each of the support rods (9), and the sliding direction of the top suction structure is arranged along the radial direction of the turntable (8). A first clamping structure is mounted on each of the support rods (9), and a second clamping structure cooperating with the first clamping structure is mounted on the turntable (8). The first clamping structure and the second clamping structure are respectively located on the inner and outer sides of the top suction structure along the radial direction of the turntable (8); An upper conductive sheet (28) is installed on the top suction structure, and a lower conductive sheet (29) that cooperates with the upper conductive sheet (28) is installed on the measuring platform (1); A driving structure for driving the top suction structure to rotate around its own axis is installed between the top suction structure and the upper mounting plate (2); a measuring rod (20) is slidably installed on each of the support rods (9), the sliding direction of the measuring rod (20) is perpendicular to the sliding direction of the corresponding top suction structure, and a positioning structure is installed between the measuring rod (20) and the top suction structure; a marking component is provided on the second clamping structure; When the top suction structure rotates around its own axis, the measuring rod (20) detects the bulge of the battery (35), and the marking component marks the battery (35) at the same time.

2. A new type of power battery production testing device according to claim 1, characterized in that: The vertical distance between the measuring platform (1) and the upper mounting plate (2) is adjustable; the measuring platform (1) and the upper mounting plate (2) are connected via a first electric telescopic rod (3); the first electric telescopic rod (3) is fixed to the upper end surface of the measuring platform (1); and the telescopic end of the first electric telescopic rod (3) is fixedly connected to the upper mounting plate (2).

3. The novel power battery production testing device according to claim 1, characterized in that: A first conveying platform (26) and a second conveying platform (27) are installed on the measuring platform (1). The first conveying platform (26), the second conveying platform (27) and the lower conductive sheet (29) are evenly distributed along the circumferential direction of the measuring platform (1) at the positions of the measuring platform (1). The lower conductive sheet (29) is located between the first conveying platform (26) and the second conveying platform (27). The conveying directions of the first conveying platform (26) and the second conveying platform (27) are opposite.

4. The novel power battery production testing device according to claim 1, characterized in that: A rotating shaft (7) is coaxially fixedly mounted on the rotating disk (8), a motor is mounted on the upper mounting plate (2), and an output shaft of the motor is fixedly connected to the rotating shaft (7).

5. A new type of power battery production testing device according to claim 4, characterized in that: The top suction structure comprises: a circular plate (12), a guide groove (10) arranged along the radial direction of the turntable (8) is opened on the support rod (9), a guide block (11) is slidably installed in the guide groove (10), a second spring (25) located in the guide groove (10) is installed between the guide block (11) and the end of the guide groove (10), one end of the second spring (25) is fixedly connected to the end of the guide groove (10), and the other end of the second spring (25) is fixedly connected to the guide block (11); a rotating shaft is rotatably installed on the guide block (11), the axis of the rotating shaft is parallel to the axis of the turntable (8), the circular plate (12) is fixedly connected to the rotating shaft, the upper conductive sheet (28) is embedded in the circular plate (12), and the driving structure is installed between the rotating shaft and the upper mounting plate (2); Suction cups (13), wherein a plurality of suction cups (13) are provided, and the suction cups (13) are evenly distributed around the circumference and fixedly connected to the circular plate (12).

6. The novel power battery production testing device according to claim 4, characterized in that: The first clamping structure comprises: a first connecting shaft (14), the first connecting shaft (14) being fixedly connected to the support rod (9), and the axis of the first connecting shaft (14) being parallel to the axis of the turntable (8); a first connecting rod (15), wherein the first connecting rod (15) is provided in two pieces, the two first connecting rods (15) are both rotatably connected to the first connecting shaft (14), the two first connecting rods (15) are staggered along the axis direction of the support rod (9), and the two first connecting rods (15) are rotatably connected via a torsion spring; A first limiting rod (16), wherein two first limiting rods (16) are provided, and the two first limiting rods (16) correspond one to one with the first connecting rod (15). The first limiting rod (16) is rotatably mounted on the end of the corresponding first connecting rod (15) away from the first connecting shaft (14). The axis of the first limiting rod (16) is parallel to the axis of the first connecting shaft (14).

7. The novel power battery production testing device according to claim 4, characterized in that: The second clamping structure comprises: a second connecting shaft (17), the second connecting shaft (17) is fixedly connected to the turntable (8), and the axis of the second connecting shaft (17) and the axis of the turntable (8) are parallel to each other; a second connecting rod (18), wherein the second connecting rod (18) is provided in two pieces, the two second connecting rods (18) are both rotatably connected to the second connecting shaft (17), the two second connecting rods (18) are staggered along the axis direction of the support rod (9), and the two second connecting rods (18) are rotatably connected via a torsion spring; a second limiting rod (19), wherein two second limiting rods (19) are provided, and the two second limiting rods (19) correspond one to one with the second connecting rod (18); the second limiting rod (19) is rotatably mounted on the end of the corresponding second connecting rod (18) away from the second connecting shaft (17); and the axis of the second limiting rod (19) is parallel to the axis of the second connecting shaft (17); The marking component is arranged on the second limiting rod (19), and the marking component is arranged as a sponge ring, and the sponge ring is wrapped around the outside of the second limiting rod (19).

8. The novel power battery production testing device according to claim 5, characterized in that: The driving structure comprises: a cylindrical gear (6), the cylindrical gear (6) being fixedly connected to a rotating shaft on the circular plate (12), the cylindrical gear (6) and the circular plate (12) being arranged on both sides of the support rod (9), the circular plate (12) being located on a side close to the measuring platform (1), and the cylindrical gear (6) being located on a side away from the measuring platform (1); An incomplete inner gear ring (5), wherein the incomplete inner gear ring (5) is fixedly mounted on the upper mounting plate (2), and the cylindrical gear (6) is meshed with the incomplete inner gear ring (5) for transmission.

9. The novel power battery production testing device according to claim 5, characterized in that: A connecting rod (21) is slidably mounted on the side of the support rod (9), wherein the sliding direction of the connecting rod (21) is perpendicular to the length direction of the guide groove (10), and the connecting rod (21) is configured to be L-shaped, and one end of the connecting rod (21) away from the support rod (9) is fixedly connected to the measuring rod (20); The positioning structure comprises: a positioning block (23), the positioning block (23) being fixedly mounted on an end portion of the connecting rod (21) away from the measuring rod (20), the positioning block (23) being located in the guide groove (10); A positioning groove (22), the positioning groove (22) is provided at an end portion of the guide block (11) close to the positioning block (23), and the positioning groove (22) cooperates with the positioning block (23); A first spring (24), wherein the first spring (24) is sleeved on the connecting rod (21), one end of the first spring (24) is fixedly connected to the connecting rod (21), and the other end of the first spring (24) is fixedly connected to the support rod (9).

10. The novel power battery production testing device according to claim 1, characterized in that: An arc-shaped groove (32) is provided on one side of the collecting barrel (4), and a third conveying platform (33) corresponding to the arc-shaped groove (32) is installed on the collecting barrel (4), and the third conveying platform (33) conveys in a direction away from the collecting barrel (4).

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