Battery negative pole lead paste BET detection weighing device

Abstract

The present application relates to the technical fields of lead-acid battery production and detection, and particularly relates to a battery negative lead paste BET detection weighing device, which comprises a workbench and a weighing device, the weighing device is fixedly connected to the workbench, a lifting frame is fixedly connected to the workbench, an anti-oxidation component, a test tube and a rotating table, the anti-oxidation component is installed on the test tube, and the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is used for quickly sealing the test tube, the anti-oxidation component is

Description

Technical Field

[0001] This invention relates to the field of lead-acid battery production and testing technology, and in particular to a battery negative electrode lead paste BET testing and weighing device. Background Technology

[0002] In lead-acid battery production, the specific surface area of ​​the negative electrode lead paste is a key indicator affecting the battery's charge-discharge efficiency, cycle life, and other performance characteristics. The BET gas adsorption method is the main method for measuring this parameter, and the corresponding testing and weighing device can achieve standardized and high-precision weighing, which is of great significance for improving testing efficiency and reliability and ensuring product quality.

[0003] An existing battery negative electrode lead paste BET testing and weighing device easily causes the lead paste to oxidize when it comes into contact with the outside air during weighing, resulting in it sticking to the inner wall of the test tube. At the same time, the lead paste in the test tube has inconsistent loose density and separation of coarse and fine particles, which seriously affects the repeatability of BET specific surface area test. Summary of the Invention

[0004] The purpose of this invention is to address the following shortcomings in the prior art: Existing battery negative electrode lead paste BET testing and weighing devices easily cause oxidation of the lead paste upon contact with outside air during weighing, leading to adhesion to the inner wall of the test tube. Furthermore, during testing, the lead paste exhibits inconsistent loose density and separation of coarse and fine particles within the test tube, severely affecting the repeatability of the BET specific surface area test. Therefore, this invention proposes a battery negative electrode lead paste BET testing and weighing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A battery negative electrode lead paste BET testing and weighing device, comprising: A workbench and a weighing device, wherein the weighing device is fixedly connected to the workbench and a lifting frame is fixedly connected to the workbench; The system includes an anti-oxidation component, a test tube, and a rotating stage. The anti-oxidation component is installed on the test tube and is used to quickly seal the test tube. A shaking component is installed on the rotating stage and acts on the rotating stage to address the heterogeneity and compactness differences of the lead paste inside the test tube.

[0006] Preferably, a lead paste container is installed between the two lifting frames, the lead paste container is fixedly connected to a supply pipe, and a tray is fixedly connected to the weighing device.

[0007] Preferably, a transparent frame is fixedly connected inside the tray, and multiple stabilizing brackets are fixedly connected to the inner wall of the transparent frame, with the test tube slidably connected between the multiple stabilizing brackets.

[0008] Preferably, the anti-oxidation component includes a sealing ring, a fixed plate, a slide rod, a movable plate, a sealing plate, and a push rod. The sealing ring is fixedly connected to the test tube and communicates with the supply tube. The fixed plate is fixedly connected to the sealing ring. The slide rod is fixedly connected to the fixed plate. The push rod passes through the sealing ring and is slidably connected to the sealing ring. One end of the push rod is fixedly connected to the sealing plate. The movable plate is fixedly connected to the push rod. The slide rod passes through the movable plate and is slidably connected to the movable plate. A return spring is fixedly connected between the movable plate and the inner wall of the fixed plate.

[0009] Preferably, the sealing ring has a feed inlet, the sealing plate is slidably connected in the feed inlet, and the movable plate has a limit hole.

[0010] Preferably, a limiting rod is slidably connected to the fixing plate, one end of the limiting rod passing through the fixing plate is slidably connected in the limiting hole, and one end of the limiting rod is fixedly connected to the outer surface of the fixing plate with a limiting spring.

[0011] Preferably, a rotating shaft is rotatably connected to the worktable, one end of the rotating shaft is fixedly connected to the rotating table, the rotating table has multiple moving holes, and the rotating table has a circular groove.

[0012] Preferably, the shaking component includes a fixed base, a cylinder, a circular plate, an impact rod, and a turntable. Multiple fixed bases are fixedly connected to the worktable, multiple cylinders are fixedly connected to the fixed bases, the circular plate is slidably connected inside the cylinder, the impact rod is fixedly connected to the circular plate, a straight spring is fixedly connected between the circular plate and the inner wall of the cylinder, the turntable is fixedly connected to the rotating shaft, multiple arc-shaped blocks are fixedly connected to the turntable, the arc-shaped blocks act on the impact rod, and a limit block is fixedly connected to the circular plate, the limit block being slidably connected to the cylinder.

[0013] Preferably, a round rod is fixedly connected inside the movable hole, a movable block is slidably connected inside the movable hole, a clamping plate is fixedly connected to one end of the movable block, a hinge rod is hinged to the other end of the movable block, a lifting ring is hinged to the end of the hinge rod away from the movable block, a straight rod is fixedly connected to the lifting ring, and a slide rail is fixedly connected to the rotating platform.

[0014] Preferably, the straight rod is slidably connected inside the slide rail, the straight rod has a locking hole, a locking rod is slidably connected to the slide rail, one end of the locking rod passes through the slide rail and is slidably connected inside the locking hole, and a fastening spring is fixedly connected between one end of the locking rod and the outer surface of the slide rail.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up anti-oxidation components, the feed inlet of the test tube can be quickly sealed after the lead paste is added, preventing the lead paste from being exposed to air for a long time and oxidizing. This effectively prevents the oxidized lead paste from sticking to the inner wall of the test tube, ensuring the accuracy of weighing and subsequent test results. At the same time, the limit rod can automatically lock the position of the sealing plate. The sealing process is simple and reliable, and no additional fixing operation is required. 2. By setting up a shaking component, the combination of rotational centrifugation and high-frequency impact vibration allows the lead paste to adhere evenly to the tube wall through centrifugation, while vibration eliminates the problems of uneven packing compaction and particle segregation. This significantly reduces random errors caused by human filling, ensures the consistency of the loose packing density of the lead paste, and effectively improves the repeatability and comparability of BET test results. 3. By setting up a cooperative structure of multiple sets of arc blocks and impact rods, stable high-frequency vibration can be generated periodically without the need for additional complex vibration generating devices. The structural design is simple and reliable, and the cost is lower. At the same time, the clamping mechanism is easy to operate. Simply pull the locking rod and press the straight rod to complete the clamping and release of the test tube. It is convenient to operate and suitable for rapid turnover in the testing process. 4. With the cooperation of parts such as the lifting frame, transparent frame, and stabilizing corner bracket, the test tube can be weighed more stably, avoiding shaking and tipping. The transparent frame can protect against accidental spillage of lead paste and contamination of the weighing instrument, and facilitates cleaning and maintenance. The lifting frame can stably support the lead paste container, ensuring stable position during lead paste supply, uniform and controllable discharge speed, improving weighing accuracy, and ensuring reliable BET test results. Attached Figure Description

[0016] Figure 1 This is a front structural schematic diagram of a battery negative electrode lead paste BET testing and weighing device proposed in this invention. Figure 2 This is a schematic diagram of the lifting frame structure of a battery negative electrode lead paste BET testing and weighing device proposed in this invention; Figure 3 This is a schematic diagram of the test tube structure of a battery negative electrode lead paste BET testing and weighing device proposed in this invention. Figure 4 This is a schematic diagram of the internal structure of the sealing ring of a battery negative electrode lead paste BET testing and weighing device proposed in this invention. Figure 5 This is a schematic diagram of the rotating platform structure of a battery negative electrode lead paste BET testing and weighing device proposed in this invention. Figure 6 This is a schematic diagram of the slide rail structure of a battery negative electrode lead paste BET testing and weighing device proposed in this invention. Figure 7This is a schematic diagram of the lifting ring structure of a battery negative electrode lead paste BET testing and weighing device proposed in this invention; Figure 8 This is a schematic diagram of the internal structure of the cylindrical part of a battery negative electrode lead paste BET testing and weighing device proposed in this invention.

[0017] In the diagram: 1. Workbench, 2. Lifting frame, 3. Weighing device, 4. Lead paste container, 5. Supply pipe, 6. Tray, 7. Transparent frame, 8. Test tube, 9. Sealing ring, 10. Stabilizing angle seat, 11. Fixed plate, 12. Slide rod, 13. Movable plate, 14. Return spring, 15. Sealing plate, 16. Push rod, 17. Limit rod, 18. Limit spring, 19. Rotating shaft, 20. Rotating table, 21. Moving block, 22. Clamping plate, 23. Round rod, 24. Lifting ring, 25. Hinge rod, 26. Straight rod, 27. Slide rail, 28. Locking rod, 29. Fastening spring, 30. Fixed seat, 31. Cylinder, 32. Round plate, 33. Impact rod, 34. Limit block, 35. Straight spring, 36. Turntable, 37. Arc block. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figure 1 A battery negative electrode lead paste BET testing and weighing device includes a workbench 1 and a weighing device 3. The weighing device 3 is existing technology and can accurately weigh items on a tray 6. It is a precision instrument and needs to be calibrated regularly. Before weighing the lead paste, the items on the tray need to be tare. Tare is a built-in function of the weighing device 3 and is a common weighing function in real life. The weighing device 3 is fixedly connected to the workbench 1. A lifting frame 2 is fixedly connected to the workbench 1. The lifting frame 2 is equipped with an electric push rod, an anti-oxidation component, a test tube 8, and a rotating stage 20. The anti-oxidation component is installed on the test tube 8 and is used to quickly seal the test tube 8. A shaking component is installed on the workbench 1 and acts on the rotating stage 20 to solve the heterogeneity and compactness difference of the lead paste in the test tube 8.

[0020] Reference Figures 2-3 A lead paste container 4 is installed between the two lifting frames 2. The lead paste container 4 contains a supply component that can squeeze out the lead paste inside. The lead paste container 4 is driven up and down by an electric push rod on the lifting frame 2, thereby connecting the supply pipe 5 to the sealing ring 9. The lead paste container 4 is fixedly connected to the supply pipe 5. A tray 6 is fixedly connected to the weighing device 3. A transparent frame 7 is fixedly connected inside the tray 6. The transparent frame 7 has transparent glass on the outside, with a glass cabinet window on one side. By pulling the glass cabinet window, the transparent frame 7 can be opened, allowing the test tube 8 to be removed. Figure 3As shown, multiple stabilizing brackets 10 are fixedly connected to the inner wall of the transparent frame 7. There are three stabilizing brackets 10. Under the action of the three stabilizing brackets 10, the test tube 8 will not tilt during weighing and feeding. The test tube 8 is slidably connected between the multiple stabilizing brackets 10.

[0021] Reference Figure 4 The anti-oxidation components include a sealing ring 9, a fixed plate 11, a slide rod 12, a movable plate 13, a sealing plate 15, and a push rod 16. The sealing ring 9 is fixedly connected to the test tube 8 and communicates with both the test tube 8 and the supply pipe 5. The fixed plate 11 is fixedly connected to the sealing ring 9. The slide rod 12 is fixedly connected to the fixed plate 11. The push rod 16 passes through the sealing ring 9 and is slidably connected to it. One end of the push rod 16 is fixedly connected to the sealing plate 15. The sealing plate 15 is circular and has a sealing ring whose shape corresponds to the size of the feed inlet. The movable plate 13 is fixedly connected to the push rod 16. The slide rod 12 passes through... A movable plate 13 is slidably connected to the movable plate 13. A return spring 14 is fixedly connected between the movable plate 13 and the inner wall of the fixed plate 11. A feed inlet is provided on the sealing ring 9. A sealing plate 15 is slidably connected in the feed inlet. A limit hole is provided on the movable plate 13. A limit rod 17 is slidably connected on the fixed plate 11. One end of the limit rod 17 passes through the fixed plate 11 and is slidably connected in the limit hole. When the limit rod 17 is in the limit hole, the limit spring 18 is in a stretched state. At this time, the sealing plate 15 is disengaged from the feed inlet, and the sealing ring 9 is in an open state. One end of the limit rod 17 is fixedly connected to the outer surface of the fixed plate 11 with the limit spring 18.

[0022] Reference Figures 5-7 A rotating shaft 19 is rotatably connected to the worktable 1. One end of the rotating shaft 19 is fixedly connected to the rotating table 20, and the other end of the rotating shaft 19 is equipped with a servo motor, which is fixed to the bottom wall of the worktable 1. The rotating table 20 has multiple moving holes, arranged in three rows. A round rod 23 is fixedly connected to each moving hole, and a moving block 21 is slidably connected to each moving hole. A turntable 36 is fixedly connected to the rotating shaft 19, and multiple arc-shaped blocks 37 are fixedly connected to the turntable 36, totaling three. The arc-shaped blocks 37 act on the impact rod 33. Figure 6As shown, a clamping plate 22 is fixedly connected to one end of the moving block 21. The clamping plate 22 can act on the outer wall of the test tube 8. A straight rod 26 is fixedly connected to the lifting ring 24. A slide rail 27 is fixedly connected to the rotating table 20. A circular groove is opened on the rotating table 20. The shape of the circular groove is consistent with the shape of the test tube 8, so that the weighed test tube 8 can be placed in the circular groove. The straight rod 26 is slidably connected in the slide rail 27. There are two locking holes on the straight rod 26. When the locking rod 28 is in the locking hole below the straight rod 26, the clamping plates 22 clamp the test tube 8. When the locking rod 28 is in the locking hole above the straight rod 26, the clamping of the test tube 8 is released. A locking rod 28 is slidably connected to the slide rail 27. One end of the locking rod 28 passes through the slide rail 27 and is slidably connected in the locking hole. A fastening spring 29 is fixedly connected between one end of the locking rod 28 and the outer surface of the slide rail 27. Figure 7 As shown, the other end of the movable block 21 is hinged with a hinge rod 25, and there are a total of three hinge rods 25. The end of the hinge rod 25 away from the movable block 21 is hinged with a lifting ring 24. The movement of the lifting ring 24 can drive the multiple hinge rods 25 to rotate synchronously.

[0023] Reference Figure 8 The shaking component includes a fixed base 30, a cylinder 31, a circular plate 32, an impact rod 33, and a turntable 36. Multiple fixed bases 30 are fixedly connected to the worktable 1, totaling three. Multiple cylinders 31 are fixedly connected to the fixed bases 30, with three cylinders 31 on each fixed base 30. The circular plate 32 is slidably connected inside the cylinder 31. The impact rod 33 is fixedly connected to the circular plate 32. The front end of the impact rod 33 is spherical. When the arc block 37 rotates to a certain angle with the turntable 36, the arc block 37 will push the impact rod 33 to move into the cylinder 31. At this time, the circular plate 32 compresses the straight spring 35. The straight spring 35 is fixedly connected between the circular plate 32 and the inner wall of the cylinder 31. A limit block 34 is fixedly connected to the circular plate 32, and the limit block 34 is slidably connected to the cylinder 31.

[0024] When weighing lead paste is required, first, place the test tube 8 stably inside the transparent frame 7, positioning it between the triangular support areas formed by the three stable corner brackets 10. At this time, the inlet of the sealing ring 9 is open for subsequent connection. Then, the lead paste container 4 is moved by the lifting frame 2, so that the supply pipe 5 connected to the lead paste container 4 is accurately aligned and passes through the sealing ring 9, connecting with the inlet of the test tube 8. After the connection is completed, the supply component installed inside the lead paste container 4 is activated, and the lead paste stored in the container is uniformly and stably transported into the test tube 8 through the supply pipe 5. When the amount of lead paste added reaches the preset weighing requirement, immediately push the movable plate 13 so that it slides smoothly along the slide rod 12 towards the sealing ring 9. The movement of the movable plate 13 will simultaneously drive the push rod 16 connected to it forward, and the push rod 16 will then push the sealing plate 15 to move precisely until it is fully inserted and... By sealing the feed inlet, a reliable seal is achieved. Simultaneously, under the elastic force of the limit spring 18, the limit rod 17 automatically engages with the corresponding limit hole on the movable plate 13, thus firmly locking the position of the sealing plate 15 and ensuring that it will not accidentally shift. At this time, the test tube 8 is in a completely sealed state, effectively isolating the internal lead paste from prolonged contact with the outside air, preventing the lead paste from adhering to the inner wall of the test tube 8 due to oxidation, and ensuring the accuracy of subsequent testing. Subsequently, the weighing device 3 can directly display the total weight of the test tube 8 and the internal lead paste. By subtracting the self-weight of the test tube 8 recorded after tare, the net weight of the lead paste can be quickly and accurately calculated. After completing the weighing work, the operator can pull the glass cabinet window to open the transparent frame 7, carefully remove the test tube 8, and transfer it to the preset circular slot on the rotating table 20 to prepare for subsequent shaking or testing steps.

[0025] The tester manually pulls the locking rod 28, causing it to disengage from the locking hole of the straight rod 26. Pulling the straight rod 26 upward causes it to slide upward, moving the lifting ring 24 upward. The movement of the lifting ring 24 causes the three hinge rods 25 to rotate synchronously. The rotation of the hinge rods 25 pushes the three moving blocks 21 to move along their respective circular rods 23 towards the center of the circular groove. The simultaneous movement of the three moving blocks 21 causes the three clamping plates 22 to move synchronously. The three clamping plates 22 together clamp the outer wall of the test tube 8. At this point, the locking rod 28 is released, and under the elastic force of the fastening spring 29, it engages in the locking hole below the straight rod 26, completing the clamping and fixing of the test tube 8. This ensures that the test tube 8 remains stable during shaking and will not shake or tip over due to impact, thus improving the stability of the shaking process.

[0026] Then, the servo motor is started. The output shaft of the servo motor rotates, driving the rotating shaft 19 to rotate, thus causing the test tube 8 to rotate slowly. The rotation of the rotating shaft 19 simultaneously drives the rotating table 20 and the turntable 36 fixed on it to rotate synchronously. The rotation of the turntable 36 causes multiple arc-shaped blocks 37 evenly distributed around its circumference to perform circular motion. When a certain arc-shaped block 37 moves to contact the end of the impact rod 33 during rotation, the convex curved surface of the arc-shaped block 37 will squeeze the impact rod 33, forcing the impact rod 33 to move axially into the cylinder 31. The movement of the impact rod 33 causes the circular plate 32 fixed to it to move together. The circular plate 32 then compresses the pre-tightened straight spring 35 behind it, causing the straight spring 35 to store elastic potential energy. When the arc-shaped block 37... As the turntable 36 continues to rotate, its contour gradually disengages from the impact rod 33, and the compressive force acting on the impact rod 33 disappears instantly. At this moment, the compressed straight spring 35 immediately elastically resets, releasing its stored potential energy, driving the circular plate 32 and causing the impact rod 33 to move rapidly in the opposite direction along the axial direction of the cylinder 31 to reset. When the impact rod 33 resets, its end impacts the side or bottom surface of the adjacent rotating platform 20 with high speed and kinetic energy, thereby causing the entire rotating platform 20 to generate a high-frequency, transient mechanical vibration. As the turntable 36 continues to rotate at a constant speed, multiple arc-shaped blocks 37 on it will periodically and sequentially contact and disengage from the corresponding impact rod 33, thereby causing the impact rod 33 to repeatedly impact the rotating platform 20. The rhythmic impacts, a series of high-frequency impacts, generate vibrations that are transmitted to the test tube 8, which is fixed to the rotating platform 20. The combined effect is that, firstly, the centrifugal force generated by the slow rotation of the test tube 8 can evenly throw the lead paste inside the tube towards and adhere it to the inner circumference of the test tube 8, forming an initial ring-shaped distribution. Then, the high-frequency flutter (vibration) transmitted axially acts on the test tube 8, causing the lead paste material adhering to the tube wall to slowly fall in a spiral pattern under the action of vibration. This motion mode, combining rotational centrifugal force and axial flutter, ensures that the final loose density of the lead paste in the test tube 8 is mainly determined by the centrifugal acceleration generated by rotation, greatly reducing manual operation and filling time. The random errors caused by inconsistent filling methods fundamentally and significantly improve the repeatability and comparability of BET surface area tests between different samples or multiple tests of the same sample. At the same time, under the dual action of continuous rotation and vibration, the lead paste in the test tube 8 is constantly turned over and mixed with particles of different sizes, thus achieving a highly uniform state. This process effectively eliminates the segregation of coarse and fine particles that may be caused by differences in particle settling velocity, as well as the problem of local inconsistencies in loose density caused by uneven filling. This makes the lead paste uniformly distributed throughout the entire effective volume of the test tube 8. This uniform distribution is a key prerequisite for obtaining accurate and repeatable BET surface area test results.

[0027] After the test is completed, the operator can manually pull the locking rod 28 again to disengage its front end from the locking hole on the straight rod 26, and then press the straight rod 26. The straight rod 26 moves down, causing the lifting ring 24 and the linkage mechanism hinged to it to move, which in turn drives the three clamping plates 22 to move synchronously away from the center of the test tube 8, thereby releasing the clamping constraint on the outer wall of the test tube 8. At this time, the test tube 8 can be safely and easily removed from the device and handed over to the subsequent stage for formal BET specific surface area testing or other related analysis.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A battery negative electrode lead paste BET testing and weighing device, characterized in that, include: A workbench (1) and a weighing device (3), wherein the weighing device (3) is fixedly connected to the workbench (1), and a lifting frame (2) is fixedly connected to the workbench (1). Anti-oxidation component, test tube (8) and rotating table (20), the anti-oxidation component is installed on the test tube (8) and the anti-oxidation component is used to quickly seal the test tube (8). A shaking component is installed on the worktable (1) and the shaking component acts on the rotating table (20) to solve the heterogeneity and compactness difference of lead paste in the test tube (8).

2. The battery negative electrode lead paste BET testing and weighing device according to claim 1, characterized in that, A lead paste container (4) is installed between the two lifting frames (2), and the lead paste container (4) is fixedly connected to a supply pipe (5). A tray (6) is fixedly connected to the weighing device (3).

3. The battery negative electrode lead paste BET detection and weighing device according to claim 2, characterized in that, A transparent frame (7) is fixedly connected inside the tray (6), and multiple stabilizing brackets (10) are fixedly connected to the inner wall of the transparent frame (7). The test tube (8) is slidably connected between the multiple stabilizing brackets (10).

4. The battery negative electrode lead paste BET testing and weighing device according to claim 2, characterized in that, The anti-oxidation component includes a sealing ring (9), a fixing plate (11), a sliding rod (12), a movable plate (13), a sealing plate (15), and a push rod (16). The sealing ring (9) is fixedly connected to the test tube (8) and is connected to the supply tube (5). The fixing plate (11) is fixedly connected to the sealing ring (9). The sliding rod (12) is fixedly connected to the fixing plate (11). The push rod (16) passes through the sealing ring (9) and is slidably connected to the sealing ring (9). One end of the push rod (16) is fixedly connected to the sealing plate (15). The movable plate (13) is fixedly connected to the push rod (16). The sliding rod (12) passes through the movable plate (13) and is slidably connected to the movable plate (13). A return spring (14) is fixedly connected between the movable plate (13) and the inner wall of the fixing plate (11).

5. The battery negative electrode lead paste BET testing and weighing device according to claim 4, characterized in that, The sealing ring (9) has a feed inlet, the sealing plate (15) is slidably connected in the feed inlet, and the movable plate (13) has a limit hole.

6. The battery negative electrode lead paste BET testing and weighing device according to claim 5, characterized in that, A limiting rod (17) is slidably connected on the fixed plate (11). One end of the limiting rod (17) passes through the fixed plate (11) and is slidably connected in the limiting hole. A limiting spring (18) is fixedly connected between one end of the limiting rod (17) and the outer surface of the fixed plate (11).

7. The battery negative electrode lead paste BET testing and weighing device according to claim 1, characterized in that, A rotating shaft (19) is rotatably connected to the workbench (1). One end of the rotating shaft (19) is fixedly connected to the rotating table (20). The rotating table (20) has multiple moving holes and a circular groove.

8. The battery negative electrode lead paste BET testing and weighing device according to claim 1, characterized in that, The shaking component includes a fixed seat (30), a cylinder (31), a circular plate (32), an impact rod (33), and a turntable (36). Multiple fixed seats (30) are fixedly connected to the workbench (1), multiple cylinders (31) are fixedly connected to the fixed seat (30), the circular plate (32) is slidably connected inside the cylinder (31), the impact rod (33) is fixedly connected to the circular plate (32), a straight spring (35) is fixedly connected between the circular plate (32) and the inner wall of the cylinder (31), the turntable (36) is fixedly connected to the rotating shaft (19), multiple arc blocks (37) are fixedly connected to the turntable (36), the arc blocks (37) act on the impact rod (33), a limit block (34) is fixedly connected to the circular plate (32), and the limit block (34) is slidably connected to the cylinder (31).

9. A battery negative electrode lead paste BET testing and weighing device according to claim 7, characterized in that, A round rod (23) is fixedly connected inside the moving hole, and a moving block (21) is slidably connected inside the moving hole. A clamping plate (22) is fixedly connected to one end of the moving block (21), and a hinge rod (25) is hinged to the other end of the moving block (21). A lifting ring (24) is hinged to the end of the hinge rod (25) away from the moving block (21). A straight rod (26) is fixedly connected to the lifting ring (24), and a slide rail (27) is fixedly connected to the rotating table (20).

10. A battery negative electrode lead paste BET detection and weighing device according to claim 9, characterized in that, The straight rod (26) is slidably connected inside the slide rail (27). A locking hole is provided on the straight rod (26). A locking rod (28) is slidably connected on the slide rail (27). One end of the locking rod (28) passes through the slide rail (27) and is slidably connected inside the locking hole. A fastening spring (29) is fixedly connected between one end of the locking rod (28) and the outer surface of the slide rail (27).

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