A battery green plate bonding force detection device

Abstract

The utility model belongs to lead -acid battery technical field discloses a kind of storage battery green plate binding force detection equipment, including frame body;Lead paste and grid binding force detection mechanism, including cylinder, pressure shaft, press-down tool, detection support frame and detection mould;Lead paste cohesion detection mechanism, including vibration table, vibrator, electronic scale.The utility model can help to determine whether the lead paste and grid binding force of green plate and lead paste cohesion index are qualified, if not qualified, it can also help to further analyze that the main reason leading to green plate lead paste shedding is the lead paste and grid binding force of green plate or lead paste cohesion, then grid structure design, and paste and solidification drying process optimization and improvement can be carried out correspondingly, to further improve the quality of storage battery green plate.

Description

Technical Field

[0001] This utility model belongs to the field of lead-acid battery technology, and more specifically, relates to a battery green plate bonding force testing device. Background Technology

[0002] The bonding strength between the lead paste and the grid in the green electrode plate, as well as the cohesive strength of the lead paste (the bonding strength between lead pastes), are two key quality indicators for green electrode plates. Whether these indicators meet the standards directly affects the quality of the battery. Due to differences in grid structure, paste preparation, curing, and drying processes, there are certain differences in the bonding strength between the lead paste and the grid in the green electrode plate, as well as the cohesive strength of the lead paste. This directly affects the battery's performance indicators such as capacity, low temperature, and cycle life.

[0003] Currently, the methods used both domestically and internationally to test the bonding strength between the lead paste and the grid, as well as the cohesive strength of the lead paste, typically involve dropping the green electrode from a certain height and using the lead paste shedding rate (the ratio of the weight of the shed lead paste to the weight of the original electrode) to determine the comprehensive indicators of the bonding strength between the lead paste and the grid, as well as the cohesive strength of the lead paste.

[0004] Due to differences in various types of green electrode plates, grid structure designs, paste preparation, and curing and drying processes, the bonding strength between the green electrode plate lead paste and the grid, as well as the cohesive strength of the lead paste, vary. If the bonding strength between the green electrode plate lead paste and the grid is greater than the cohesive strength of the lead paste, then the cohesive strength is the primary cause of green electrode plate lead paste detachment. Conversely, if the bonding strength between the green electrode plate lead paste and the grid is less than the cohesive strength, then the bonding strength between the lead paste and the grid is the primary cause of green electrode plate lead paste detachment.

[0005] However, current methods for detecting lead paste shedding rate on raw electrode plates cannot accurately determine the main causes of lead paste shedding, thus hindering the optimization and improvement of processes such as grid structure design, paste preparation, and curing and drying. Utility Model Content

[0006] In view of this, the purpose of this utility model is to address the shortcomings of the existing technology by providing a battery green plate bonding force testing device. This device can test the green plate bonding force from two aspects: the bonding force between lead paste and grid and the cohesive force of lead paste. By obtaining the test values ​​of the bonding force between the green plate grid and lead paste and the cohesive force of lead paste, the quality of the green plate bonding force index can be accurately analyzed, and corresponding optimization and improvement can be made in grid structure design, paste preparation, curing and drying processes, etc., to further improve the quality of battery green plates.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A battery electrode bonding strength testing device, comprising:

[0009] Frame;

[0010] A lead paste bonding force testing mechanism includes a cylinder, a pressure shaft, a pressing fixture, a testing support frame, and a testing mold. The cylinder is mounted on the top of the frame. The pressure shaft is connected to a piston rod extending downward from the cylinder, and the lower end of the pressure shaft is connected to the pressing fixture. The testing support frame is mounted inside the frame and located below the pressing fixture. The testing mold is placed on the testing support frame, and the green electrode plate is placed on the testing mold, which is adapted to its shape. A pressure gauge for measuring the pressing pressure value is mounted on the cylinder.

[0011] A lead paste cohesion testing mechanism includes a vibrating table, a vibrator, and an electronic scale. The vibrating table includes a horizontally mounted frame and a feeding hopper connected below the frame. The frame is installed inside the frame and located below the testing support frame. A buffer structure connects the outer corner of the frame to the corresponding vertical rod in the frame. A mesh screen is installed in the middle of the frame. The vibrator is installed on the outer wall of the feeding hopper. A lead paste collection port is provided at the bottom of the feeding hopper. The electronic scale is installed inside the frame and located directly below the lead paste collection port.

[0012] Preferably, the pressing fixture includes a pressing fixture bracket and pressing probes. The pressing fixture bracket is connected to the lower end of the pressure shaft. Several pressing probes are vertically mounted on the bottom surface of the pressing fixture bracket and are respectively aligned with the grid on the lower electrode plate.

[0013] Preferably, the pressing probe is generally three-dimensionally prismatic, the lower end face of the pressing probe has the same shape as the green electrode plate grid, and there is a gap between the four sides of the lower end face of the pressing probe and the internal ribs forming the green electrode plate grid.

[0014] Preferably, the outer side of the testing support frame is fixedly connected to the corresponding vertical rod in the frame body, and the upper surface of the testing support frame is provided with a positioning groove that can be adapted to place the testing mold. The positioning groove has a central opening. The testing mold includes a green plate testing area located in the middle and a non-testing area located on the periphery. The shape of the green plate testing area corresponds to the shape of the central opening on the positioning groove. The inner area of ​​the green plate testing area is provided with a green plate testing area grid and green plate testing area ribs that correspond to the grid and internal ribs on the green plate.

[0015] Preferably, the positioning groove has two cross-shaped horizontal and vertical support bars in the middle opening to support the detection area of ​​the green electrode plate on the detection mold.

[0016] Preferably, the screen surface located in the middle is recessed below the upper plane of the frame, and three sides of the frame are provided with raised ribs. A limiting groove coaxial with or parallel to the central axis of the raised rib is opened on the side of the raised rib facing the screen surface. The lead paste cohesion detection mechanism also includes a sealing cover plate. The sealing cover plate includes a cover plate body and a cover plate handle connected to both sides of the cover plate body. The sealing cover plate extends horizontally into the frame from the side without the raised ribs, and the cover plate body and the cover plate handle can be adapted to fit into the limiting groove of the corresponding side of the raised rib, and the outer bottom surface of the cover plate body presses against the upper surface of the frame below.

[0017] Preferably, the bottom surface of the main body of the sealing cover plate must be ensured to not come into contact with the vibrating lead paste.

[0018] Preferably, the buffer structure is a spring with a circular cross-section, and a concave arc-shaped groove is provided at the outer corner of the frame. The spring is fitted into the arc-shaped groove, and the upper and lower ends of the spring are respectively fixed to the frame and the frame body.

[0019] Preferably, the vibrator is also equipped with an amplitude setter.

[0020] This utility model also discloses a testing method for a battery green plate bonding force testing device, including the following steps:

[0021] S1. Test of the bonding force between lead paste and grid: Place the test mold on the test support frame, and place the green electrode plate to be tested on the test mold; start the cylinder to push the pressure shaft, and at the same time drive the pressing fixture to press down the green electrode plate. After the pressure shaft completes its preset stroke, the lead paste detaches from the green electrode plate and the grid on the test mold, and falls onto the mesh screen of the vibrating table in the lead paste cohesion test mechanism, waiting to be tested for lead paste cohesion; the pressure gauge displays the highest pressure value that occurs during the pressing of the green electrode plate by the pressing fixture. This highest pressure value is defined as the test value of the bonding force between the green electrode plate lead paste and the grid.

[0022] S2. Before conducting the bonding force test between lead paste and grid, first measure the weight of the green electrode plate to be tested and set it as A1. After the bonding force test between lead paste and grid is completed, measure the weight of the green electrode plate again and set it as A2. The weight of the lead paste that fell on the electronic scale below is A3. Then the weight of the green electrode plate lead paste collected on the vibration table is A4 = A1 - A2 - A3.

[0023] S3. Lead paste cohesion test: Turn on the vibrator. Under the preset vibration frequency and vibration time, large pieces of lead paste gradually disperse to form small particles. The small particles pass through the mesh screen on the vibrating table and are collected by the lead paste collection port below the vibrating table. Finally, they fall into the electronic scale. The weight of the lead paste displayed on the battery scale at this time is A5. Then, the weight of the lead paste passing through the mesh screen under vibration is A6 = A5 - A3. The ratio of A6 to A4 is defined as the lead paste cohesion test value.

[0024] Compared to existing technologies, this utility model provides a battery green plate bonding force testing device. By obtaining the test values ​​of the bonding force between the green plate lead paste and the grid, as well as the cohesive force of the lead paste, and then comparing them with the corresponding process range requirements for the bonding force between the green plate lead paste and the grid and the cohesive force of the lead paste, it is possible to determine whether the test values ​​of the bonding force between the green plate lead paste and the grid and the cohesive force of the lead paste meet the green plate bonding force requirements. This utility model can also help to further analyze whether the main cause of the green plate lead paste detachment is the bonding force between the green plate lead paste and the grid or the cohesive force of the lead paste. Then, the grid structure design, paste preparation, curing and drying processes can be optimized and improved accordingly, further improving the quality of the battery green plate. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a front view of the overall structure of a battery electrode bonding force testing device according to the present invention.

[0027] Figure 2 This is a side view of the overall structure of a battery electrode bonding force testing device according to the present invention.

[0028] Figure 3 This is an isometric view of the overall structure of a battery electrode bonding force testing device (excluding the pressing tool) according to this utility model.

[0029] Figure 4 This is a schematic diagram of the pressing fixture in the lead paste and grid bonding force testing mechanism of this utility model.

[0030] Figure 5 This is a schematic diagram of the testing support frame in the lead paste and grid bonding force testing mechanism of this utility model.

[0031] Figure 6This is a schematic diagram of the testing mold in the lead paste and grid bonding force testing mechanism of this utility model.

[0032] Figure 7 This is a structural diagram of the bio-plate.

[0033] Figure 8 This is a schematic diagram of the vibration table in the lead paste cohesion testing mechanism of this utility model.

[0034] Figure 9 This is a schematic diagram of the structure of the frame in the vibration table of this utility model.

[0035] Figure 10 This is a schematic diagram of the sealing cover plate in the lead paste cohesion testing mechanism of this utility model.

[0036] In the diagram: 1-Green electrode plate, 2-Frame, 3-Cylinder, 4-Pressure shaft, 5-Pressing fixture, 6-Detection support frame, 7-Detection mold, 8-Pressure gauge, 9-Vibration table, 10-Vibrator, 11-Electronic scale, 12-Frame base, 13-Feeding bin, 14-Buffer structure, 15-Sieve surface, 16-Lead paste collection port, 17-Pressing fixture bracket, 18-Pressing probe, 19-Vertical rod, 20-Positioning groove, 21-Center opening, 22-Green electrode plate detection area, 23-Non-detection area, 24-Green electrode plate detection area grid, 25-Green electrode plate detection area rib, 26-Supporting strip, 27-Sealing cover plate, 28-Raised rib, 29-Limiting groove, 30-Cover plate body, 31-Cover plate handle, 32-Amplitude setter. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Example:

[0041] See Figures 1 to 10 This utility model provides a battery electrode plate bonding force testing device, including a lead paste and grid bonding force testing mechanism, a lead paste cohesive force testing mechanism, and a frame 2 for mounting and supporting the two mechanisms.

[0042] Specifically, frame 2 is the overall support structure for the equipment, such as... Figure 1-3 As shown, it includes a frame for testing the bonding force between lead paste and grid and a frame for testing the cohesive force of lead paste.

[0043] The lead paste-grid bonding force testing mechanism includes a cylinder 3, a pressure shaft 4, a pressing fixture 5, a testing support frame 6, and a testing mold 7. The cylinder 3 is mounted on the top of the frame 2. The pressure shaft 4 is connected to a piston rod extending downwards from the cylinder 3, and the lower end of the pressure shaft 4 is connected to the pressing fixture 5. The testing support frame 6 is installed inside the frame 2 and located below the pressing fixture 5. The testing mold 7 is placed on the testing support frame 6. Figure 7 The live plate 1 shown is placed on the test mold 7, which is adapted to its shape; a pressure gauge 8 is installed on the cylinder 3 to measure and display the downward pressure value.

[0044] The lead paste cohesion testing mechanism includes a vibrating table 9, a vibrator 10, and an electronic scale 11. The vibrating table 9 includes a horizontally mounted frame 12 and a funnel-shaped feeding hopper 13 connected below the frame 12. The frame 12 is installed inside the frame 2 and located below the testing support frame 6. A buffer structure 14 is connected between the outer corner of the frame 12 and the corresponding vertical rod 19 in the frame 2. A mesh screen 15 is installed in the middle of the frame 12. The vibrator 10 is installed on the outer wall of the feeding hopper 13. A lead paste collection port 16 is provided at the bottom of the feeding hopper 13. The electronic scale 11 is installed inside the frame 2 and located directly below the lead paste collection port 16.

[0045] The pressing fixture 5, driven by the pressure shaft 4, presses down the live electrode plate 1 to detect the bonding force between the grid and the lead paste. In a further specific embodiment, such as... Figure 4 As shown, the pressing fixture 5 specifically includes a pressing fixture bracket 17 and pressing probes 18. The pressing fixture bracket 17 is connected to the lower end of the pressure shaft 4. Several pressing probes 18 are vertically installed on the bottom surface of the pressing fixture bracket 17 and are respectively aligned with the grid on the lower electrode plate 1.

[0046] Furthermore, the pressing probe 18 is generally three-dimensionally prismatic. The lower end face of the pressing probe 18 (the surface that contacts the green electrode plate) has the same shape as the green electrode plate grid. There is a gap (typically 0.02mm) between the four sides of the lower end face of the pressing probe and the internal ribs forming the green electrode plate grid. This ensures that when testing the bonding force between the green electrode plate lead paste and the grid, the pressing probe 18 will not press down on the grid ribs of the green electrode plate 1, affecting the testing accuracy. Simultaneously, it also ensures that the lead paste falling off the green electrode plate 1 is due to the lead paste detaching from the grid, rather than the lead paste falling off due to breakage inside the green electrode plate grid.

[0047] In a further specific embodiment, such as Figure 2 , 5 As shown in Figure 6, the outer side of the testing support frame 6 is fixedly connected to the corresponding vertical rod 19 in the frame body 2. The upper surface of the testing support frame 6 is provided with a positioning groove 20 that can accommodate the placement of the testing mold 7. The positioning groove 20 has a central opening 21. The positioning groove 20 is used to position the testing mold 7 and the green electrode plate 1, so that the two are aligned. The testing mold 7 includes a green electrode plate testing area 22 located in the middle and a non-testing area 23 located on the periphery. The shape of the green electrode plate testing area 22 corresponds to the shape of the central opening 21 on the positioning groove 20. The green electrode plate testing area 22 is provided with a green electrode plate testing area grid 24 and a green electrode plate testing area rib 25 that correspond to the grid and internal ribs on the green electrode plate 1.

[0048] Furthermore, the central opening 21 of the positioning groove 20 is provided with two horizontal and vertical support bars 26 arranged in a cross shape to support the green electrode plate detection area 22 on the detection mold 7, so as to prevent the detection mold 7 from deforming in this area when the bonding force between the green electrode plate lead paste and the grid is tested, thus affecting the detection accuracy.

[0049] When testing the bonding force between lead paste and grid, cylinder 3 in the lead paste and grid bonding force testing mechanism is activated. Cylinder 3 pushes pressure shaft 4, which in turn drives pressing fixture 5. Pressing probe 18 presses down on green electrode plate 1 to test the bonding force between green electrode plate lead paste and grid. Pressure gauge 8 is used to display the test value of the bonding force between green electrode plate lead paste and grid.

[0050] In a further specific embodiment, such as Figure 8 , 9As shown in Figure 10, the sieve surface 15 located in the middle is recessed into the upper plane of the frame 12 (generally, the sieve surface is recessed into the frame plane by a distance of 4-5 cm). Three sides of the frame 12 are provided with protruding ribs 28. On the side of the protruding ribs 28 facing the sieve surface 15, there is a limiting groove 29 that is coaxial or parallel to the central axis of the protruding rib. The lead paste cohesion testing mechanism also includes a sealing cover plate 27. The sealing cover plate 27 includes a cover plate body 30 and a cover plate handle 31 connected to both sides of the cover plate body 30. The sealing cover plate 27 extends horizontally into the frame 12 from the side without protruding ribs 28. The cover plate body 30 and the cover plate handle 31 can be adapted to fit into the limiting groove 29 of the corresponding side protruding rib 28 to restrict the cover plate body 30 to be firmly stuck on the frame 12 and to press the outer bottom surface of the cover plate body 30 against the upper surface of the frame 12 below.

[0051] After the bonding force test between the lead paste and the grid is completed, the detached lead paste is collected on the recessed mesh screen 15 in the middle of the frame 12. Then, the sealing cover 27 is inserted and pushed in from the side of the frame 12 without the protruding ridge 28. The outer bottom surface of the cover plate body 30 of the sealing cover 27 presses against the upper surface of the frame 12 below, thus sealing the detached lead paste in the space formed by the cover plate body 30 and the mesh screen 15 below, waiting for the cohesion test of the lead paste.

[0052] The bottom surface of the main body 30 of the sealing cover plate 27 must be kept away from the vibrating lead paste to prevent the lead paste from adhering to the main body 30 of the cover plate and affecting the final test results.

[0053] The buffer structure 14 is preferably a spring with a circular cross-section. A concave arc-shaped groove is provided at the outer corner of the frame 12, and the spring is fitted into the arc-shaped groove. The upper and lower ends of the spring are respectively fixed to the frame 12 and the frame 2 to buffer vibration. At the same time, an amplitude setter 32 is also installed on the vibrator 10.

[0054] Turn on the vibrator 10, adjust the vibration frequency and vibration time process parameters on the amplitude setter 32, and start the vibrating table 9 to test the cohesive force of the lead paste. Under certain vibration frequency and vibration time conditions, large pieces of lead paste gradually disperse to form small particles. The small particles of lead paste pass through the mesh sieve 15 on the vibrating table 9 and are collected by the lead paste collection port 16 below the vibrating table 9. Finally, they fall into the electronic scale 11, and the weight of the lead paste that passed through the mesh sieve is obtained by the battery scale.

[0055] The above-mentioned testing method for the battery green plate bonding force testing equipment includes the following steps:

[0056] S1. Test of the bonding force between lead paste and grid: Place the test mold on the test support frame, and place the green electrode plate to be tested on the test mold; start the cylinder to push the pressure shaft, and at the same time drive the pressing fixture to press down the green electrode plate. After the pressure shaft completes its preset stroke, the lead paste detaches from the green electrode plate and the grid on the test mold, and falls onto the mesh screen of the vibrating table in the lead paste cohesion test mechanism, waiting to be tested for lead paste cohesion; the pressure gauge displays the highest pressure value that occurs during the pressing of the green electrode plate by the pressing fixture. This highest pressure value is defined as the test value of the bonding force between the green electrode plate lead paste and the grid.

[0057] S2. Before conducting the bonding force test between lead paste and grid, first measure the weight of the green electrode plate to be tested and set it as A1. After the bonding force test between lead paste and grid is completed, measure the weight of the green electrode plate again and set it as A2. The weight of the lead paste that fell on the electronic scale below is A3. Then the weight of the green electrode plate lead paste collected on the vibration table is A4 = A1 - A2 - A3.

[0058] S3. Lead paste cohesion test: Turn on the vibrator and, under the preset vibration frequency and vibration time (usually 5 minutes), large pieces of lead paste gradually disperse to form small particles. The small particles pass through the mesh screen on the vibrating table and are collected by the lead paste collection port below the vibrating table, finally falling into the electronic scale. The weight of the lead paste displayed on the battery scale at this time is A5. Then, the weight of the lead paste passing through the mesh screen under vibration is A6 = A5 - A3. The ratio of A6 to A4 is defined as the lead paste cohesion test value.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0060] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery electrode plate bonding force testing device, characterized in that, include: Frame; A lead paste bonding force testing mechanism includes a cylinder, a pressure shaft, a pressing fixture, a testing support frame, and a testing mold. The cylinder is mounted on the top of the frame. The pressure shaft is connected to a piston rod extending downward from the cylinder, and the lower end of the pressure shaft is connected to the pressing fixture. The testing support frame is mounted inside the frame and located below the pressing fixture. The testing mold is placed on the testing support frame, and the green electrode plate is placed on the testing mold, which is adapted to its shape. A pressure gauge for measuring the pressing pressure value is mounted on the cylinder. A lead paste cohesion testing mechanism includes a vibrating table, a vibrator, and an electronic scale. The vibrating table includes a horizontally mounted frame and a feeding hopper connected below the frame. The frame is installed inside the frame and located below the testing support frame. A buffer structure connects the outer corner of the frame to the corresponding vertical rod in the frame. A mesh screen is installed in the middle of the frame. The vibrator is installed on the outer wall of the feeding hopper. A lead paste collection port is provided at the bottom of the feeding hopper. The electronic scale is installed inside the frame and located directly below the lead paste collection port.

2. The battery electrode plate bonding force testing device according to claim 1, characterized in that, The pressing fixture includes a pressing fixture bracket and pressing probes. The pressing fixture bracket is connected to the lower end of the pressure shaft. Several pressing probes are vertically installed on the bottom surface of the pressing fixture bracket and are respectively aligned with the grid on the lower electrode plate.

3. The battery electrode plate bonding force testing device according to claim 2, characterized in that, The pressing probe is generally three-dimensional prismatic in shape. The lower end face of the pressing probe has the same shape as the green electrode plate grid, and there are gaps between the four sides of the lower end face of the pressing probe and the internal ribs forming the green electrode plate grid.

4. The battery electrode plate bonding force testing device according to claim 1, characterized in that, The outer side of the testing support frame is fixedly connected to the corresponding vertical rod in the frame body. The upper surface of the testing support frame is provided with a positioning groove that can be adapted to place the testing mold. The positioning groove has a central opening. The testing mold includes a green plate testing area in the middle and a non-testing area on the periphery. The shape of the green plate testing area corresponds to the shape of the central opening on the positioning groove. The inner area of ​​the green plate testing area is provided with a green plate testing area grid and green plate testing area ribs that correspond to the grid and internal ribs on the green plate.

5. The battery electrode plate bonding force testing device according to claim 4, characterized in that, The positioning groove has two cross-shaped horizontal and vertical support bars in the middle opening to support the detection area of ​​the live plate on the detection mold.

6. The battery electrode plate bonding force testing device according to claim 1, characterized in that, The screen surface located in the middle is recessed into the upper plane of the frame. The frame has raised ribs on three sides. A limiting groove coaxial with or parallel to the central axis of the raised rib is opened on the side of the raised rib facing the screen surface. The lead paste cohesion detection mechanism also includes a sealing cover plate. The sealing cover plate includes a cover plate body and a cover plate handle connected to both sides of the cover plate body. The sealing cover plate extends horizontally into the frame from the side without the raised ribs. The cover plate body and the cover plate handle can be fitted into the limiting grooves of the corresponding raised ribs, and the outer bottom surface of the cover plate body presses against the upper surface of the frame below.

7. The battery electrode plate bonding force testing device according to claim 6, characterized in that, The bottom surface of the main body of the sealing cover plate must be ensured to not come into contact with the vibrating lead paste.

8. The battery electrode plate bonding force testing device according to claim 1, characterized in that, The buffer structure is a spring with a circular cross-section. A concave arc-shaped groove is provided at the outer corner of the frame. The spring is fitted into the arc-shaped groove, and the upper and lower ends of the spring are respectively fixed to the frame and the frame body.

9. The battery electrode plate bonding force testing device according to claim 1, characterized in that, The vibrator is also equipped with an amplitude setter.

Images