Lead acid battery pole group assembly pressure testing machine

Abstract

This invention relates to the field of storage batteries, specifically to a pressure testing machine for lead-acid battery electrode assembly. The machine includes a cabinet, a pressure-bearing assembly, a material transfer assembly, electrode groups, a control box, and a display screen. The frame is equipped with a worktable, a baffle, and several buttons, which are electrically connected to the control box. The pressure-bearing assembly is fixedly located inside the upper part of the cabinet. The material transfer assembly includes a sliding mechanism, a clamping mechanism, and a sensing mechanism. The sliding mechanism is fixedly mounted on the worktable, the clamping mechanism is fixedly located above the sliding mechanism, and the sensing mechanism is fixedly located inside the lower part of the cabinet. The control box is fixedly mounted inside the lower part of the cabinet, located to one side of the sensing mechanism, and is electrically connected to both the pressure-bearing assembly and the material transfer assembly. The display screen is fixedly mounted on the cabinet and is electrically connected to the sensing mechanism. This invention avoids the errors caused by traditional experience-based electrode group pressure testing, improves the accuracy of pressure testing, increases testing efficiency, and improves battery capacity and lifespan.

Description

Technical Field

[0001] This invention relates to the field of storage batteries, specifically to a pressure testing machine for lead-acid battery electrode assembly. Background Technology

[0002] In lead-acid batteries, the battery electrode group, composed of stacked plates, compresses the thickness of the plates during assembly, thus affecting the pathway and resistance of oxygen recombination during charging, and consequently affecting the battery's capacity and lifespan. To ensure the quality of lead-acid batteries, the assembly pressure of the electrode group must be sampled and inspected during the production process. However, battery electrode groups have a certain degree of elasticity, making it extremely difficult to accurately measure their assembly pressure. This requires the measurer to have extensive experience, and the testing is inconvenient and prone to large deviations.

[0003] Chinese patent CN107515064A discloses a lead-acid battery electrode assembly pressure testing machine, including a frame, a positioning bracket, a lifting assembly, a clamping assembly, a testing assembly, and a testing fixture. The positioning bracket is located on one side of the top of the frame, and the lifting bracket passes through the other side of the top of the frame and is fixed to the side of the frame. The clamping assembly is located on the top of the lifting bracket. The lead-acid battery electrode assembly pressure testing machine provided by this invention solves the technical problems of existing technologies, such as the extreme difficulty in accurately measuring the assembly pressure of battery electrode groups, inconvenient testing, and large deviations.

[0004] However, in actual testing, manually rotating the device increases labor intensity and makes the placement and fixing of the pole group more cumbersome, thus reducing testing efficiency. Summary of the Invention

[0005] To address the aforementioned issues, a pressure testing machine for lead-acid battery electrode assembly is provided. This machine, consisting of a cabinet, a pressure-bearing component, a material transfer component, electrode groups, a control box, and a display screen, solves the problem of how to efficiently perform pressure testing on lead-acid battery electrode groups.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] A lead-acid battery electrode assembly pressure testing machine includes a cabinet, a pressure-reducing component, a material transfer component, electrode groups, a control box, and a display screen. The cabinet has an L-shaped hollow frame structure, with a horizontal worktable laid on the frame. A baffle is vertically installed above the worktable and fixed to the cabinet. Several buttons are also installed on the cabinet and electrically connected to the control box. The pressure-reducing component is fixed inside the cabinet at the top and its working direction is vertically downward. The material transfer component includes a sliding mechanism, a clamping mechanism, and a sensing mechanism. The sliding mechanism is fixed on the worktable, the clamping mechanism is fixed above the sliding mechanism, and the sensing mechanism is fixed inside the cabinet at the bottom and directly below the pressure-reducing component. The control box is fixed inside the cabinet at the bottom and located to one side of the sensing mechanism. The control box is electrically connected to both the pressure-reducing component and the material transfer component. The display screen is fixed on the cabinet and electrically connected to the sensing mechanism.

[0008] Preferably, the pressing component includes a fixed frame, a hydraulic cylinder, a first connecting block, and an abutment block; the fixed frame is vertically fixed inside the cabinet and its bottom is fixedly connected to the workbench; the hydraulic cylinder is fixedly mounted on the fixed frame and its working direction is vertically downward, and a fixing buckle is fixedly provided at the output end of the hydraulic cylinder; the first connecting block is snapped onto the output end of the hydraulic cylinder and its bottom abuts against the fixing buckle; the abutment block is fixedly mounted at the lower end of the first connecting block.

[0009] Preferably, the pressing component further includes a positioning mechanism; the positioning mechanism includes a partition, a guide rod, and a limiting post. The partition has a U-shaped structure and is fixedly installed inside the cabinet at the top. The U-shaped groove of the partition has first through holes on both sides near the hydraulic cylinder. The limiting post has a hollow annular structure and is inserted into the first through hole and fixedly connected to the partition. A second through hole corresponding to the first through hole is opened at the upper end of the first connecting block. The guide rod is coaxially arranged with the limiting post and slides in fit. The bottom of the guide rod is inserted into the second through hole and fixedly connected to the first connecting block.

[0010] Preferably, the sliding mechanism includes an electric telescopic rod, a second connecting block, a base plate, a slider, and a guide rail; a third through hole is provided in the middle of the lower end of the fixed frame, the electric telescopic rod is fixedly mounted on the workbench and located inside the cabinet, and the front end of the electric telescopic rod passes through the third through hole; the second connecting block is fixedly connected to the output end of the electric telescopic rod; two guide rails are symmetrically fixedly mounted on the workbench, one end of the guide rail is located inside the cabinet and directly below the abutment block; the slider is slidably mounted on the guide rail; the bottom of the base plate is fixedly connected to the upper end of the slider, and the inner sidewall of the base plate is fixedly connected to the second connecting block.

[0011] Preferably, the clamping mechanism includes a base, an electric push rod, a third connecting block, a sliding plate, a linkage mechanism, and a limiting seat; the base is fixedly mounted on the upper end of the base plate and located directly below the abutment block, with a groove formed by hollowing out the middle of the base, and a track symmetrically fixed at the upper end of the groove; there are two sliding plates, which are slidably mounted on the track and located at both ends of the base; the linkage mechanism is fixedly mounted on the base and located at the center of the groove; the electric push rod is fixedly mounted on one side of the base and its working direction is horizontal; the third connecting block is fixedly connected to the output end of the electric push rod, and the upper end of the third connecting block is fixedly connected to the adjacent sliding plate; there are several limiting seats and they are fixedly mounted on both ends of the sliding plate, and the limiting seats are provided with positioning plates and guide wheels.

[0012] Preferably, the linkage mechanism includes a bearing seat, a fixing block, a linkage plate, and a linkage rod; the bearing seat is fixedly installed at the center of the upper end of the groove of the base; the fixing block is fixedly installed at the lower end of the bearing seat; the linkage plate is rotatably mounted on the bearing seat; there are two linkage rods, one end of which is fixedly connected to one end of the linkage plate, and the other end of which is fixedly connected to the lower end of the slide plate.

[0013] Preferably, the sensing mechanism includes a mounting bracket, a pressure analyzer, a guide rod, and a contact block; a fourth through hole is provided on the worktable directly below the hydraulic cylinder; the mounting bracket is fixedly installed inside the cabinet at the lower end and below the fourth through hole; the pressure analyzer is fixedly installed on the mounting bracket and electrically connected to the display screen; the guide rod is vertically fixedly installed on the upper end of the pressure analyzer and passes through the fourth through hole; the contact block is fixedly installed on the upper end of the guide rod, and the upper end of the contact block abuts against the base plate.

[0014] The advantages of this invention compared to the prior art are:

[0015] 1. This invention achieves automated pressure testing by cooperating with the pressure-blocking component, sliding mechanism, clamping mechanism, and sensing mechanism. This avoids errors caused by relying on experience to test the pressure of the electrode group in the traditional way, improves the accuracy of pressure testing, saves operation time, increases testing efficiency, ensures the consistency of assembly pressure and design, reduces labor intensity and labor costs, and improves the battery capacity and service life of the final product.

[0016] 2. The present invention achieves accurate pressure testing through a positioning mechanism, avoiding the displacement of the pressure block during the pressing process, which could lead to uneven force on the electrode group and affect the pressure test values. This ensures the accurate pressure test and improves the accuracy of the data.

[0017] 3. The present invention achieves the effect of sliding the skateboard in conjunction with the linkage mechanism, which is simple in structure, reduces cost, and is easy to maintain. Attached Figure Description

[0018] Figure 1This is a three-dimensional schematic diagram of a lead-acid battery electrode assembly pressure testing machine;

[0019] Figure 2 This is an internal side view of a lead-acid battery electrode assembly pressure testing machine;

[0020] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 4 This is a three-dimensional schematic diagram of the pressure-resistant component of a lead-acid battery electrode assembly pressure testing machine;

[0022] Figure 5 This is a three-dimensional side view of the pressure-resistant component of a lead-acid battery electrode assembly pressure testing machine.

[0023] Figure 6 This is a three-dimensional schematic diagram of the sliding mechanism of a lead-acid battery electrode assembly pressure testing machine;

[0024] Figure 7 This is a top view of the bottom of the clamping mechanism of a lead-acid battery electrode assembly pressure testing machine;

[0025] Figure 8 This is a bottom view of the clamping mechanism of a lead-acid battery electrode assembly pressure testing machine.

[0026] Figure 9 This is a three-dimensional schematic diagram of the sensing mechanism of a pressure testing machine for lead-acid battery electrode assembly.

[0027] The diagram is labeled as follows: 1. Cabinet; 11. Workbench; 12. Baffle; 13. Button; 2. Pressing assembly; 21. Fixing frame; 22. Hydraulic cylinder; 23. Fixing buckle; 24. First connecting block; 25. Abutting block; 25. Positioning mechanism; 251. Partition; 252. Guide rod; 253. Limiting post; 3. Material transfer assembly; 31. Sliding mechanism; 311. Electric telescopic rod; 312. Second connecting block; 313. Base plate; 314. Slider; 315. Guide rail; 32. Clamp 321. Tightening mechanism; 322. Base; 323. Electric push rod; 324. Third connecting block; 325. Slide plate; 326. Linkage mechanism; 3251. Shaft seat; 3252. Fixing block; 3253. Linkage plate; 3254. Linkage rod; 326. Limiting seat; 3261. Positioning plate; 3262. Guide wheel; 33. Sensing mechanism; 331. Mounting bracket; 332. Pressure analyzer; 333. Guide rod; 334. Contact block; 4. Electrode group; 5. Control box; 6. Display screen. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] See Figures 1-9 As shown: A lead-acid battery electrode assembly pressure testing machine includes a cabinet 1, a pressure-reducing component 2, a material transfer component 3, electrode groups 4, a control box 5, and a display screen 6. The cabinet 1 has an L-shaped hollow frame structure, with a horizontal workbench 11 laid on the frame. A baffle 12 is vertically installed above the workbench 11 and is fixedly connected to the cabinet 1. Several buttons 13 are also installed on the cabinet 1, and the buttons 13 are electrically connected to the control box 5. The pressure-reducing component 2 is fixedly installed inside the cabinet 1 at the top, and its working direction is vertically downward. The material transfer assembly 3 includes a sliding mechanism 31, a clamping mechanism 32, and a sensing mechanism 32. The sliding mechanism 31 is fixedly mounted on the worktable 11, the clamping mechanism 32 is fixedly mounted on the upper end of the sliding mechanism 31, and the sensing mechanism 32 is fixedly mounted inside the cabinet 1 at the lower part and directly below the pressing assembly 2. The control box 5 is fixedly mounted inside the cabinet 1 at the lower part and located on one side of the sensing mechanism 32. The control box 5 is electrically connected to both the pressing assembly 2 and the material transfer assembly 3. The display screen 6 is fixedly mounted on the cabinet 1 and is electrically connected to the sensing mechanism 32.

[0030] The operation of the corresponding component is controlled by the control box 5 via button 13. The sliding mechanism 31 slides out onto the workbench 11, placing the sampled lead-acid battery electrode group 4 onto the clamping mechanism 32. At this time, the clamping mechanism 32 clamps and fixes the electrode group 4 in the middle. As the sliding mechanism 31 moves the electrode group 4 directly under the pressing component 2, it stops moving. At this time, the pressing component 2 presses down on the electrode group 4 below. During the pressing process, the sensing mechanism 32 below the clamping mechanism 32 comes into contact with it, analyzes and processes the pressure value generated during the pressing, and uploads it. Finally, it is displayed on the display screen 6. The pressure value can also be preset to test the electrode group 4. The pressure test is conducted using a transparent baffle 12, which allows for easy observation of the test process while protecting the safety of the personnel. After the test, the sliding mechanism 31 pushes out the electrode group 4, and the clamping assembly no longer clamps and fixes the electrode group 4, making it easy to remove the lead-acid battery electrode group 4. This solves the problem of how to efficiently test the pressure of the lead-acid battery electrode group 4, avoids the errors caused by traditional experience-based electrode pressure testing, improves the accuracy of pressure testing, saves operation time, improves testing efficiency, ensures the consistency of assembly pressure and design, reduces labor intensity and labor costs, and improves the battery capacity and service life of the final product.

[0031] See Figures 4-5As shown: The pressing component 2 includes a fixed frame 21, a hydraulic cylinder 22, a first connecting block 23, and an abutment block 24; the fixed frame 21 is vertically fixed inside the cabinet 1 and its bottom is fixedly connected to the workbench 11; the hydraulic cylinder 22 is fixedly mounted on the fixed frame 21 and its working direction is vertically downward, and a fixing buckle 221 is fixedly provided at the output end of the hydraulic cylinder 22; the first connecting block 23 is snapped onto the output end of the hydraulic cylinder 22 and its bottom abuts against the fixing buckle 221; the abutment block 24 is fixedly mounted at the lower end of the first connecting block 23.

[0032] When the electrode group 4 is delivered directly below the pressure-retaining component 2, the output end of the hydraulic cylinder 22 moves slowly downward. The hydraulic cylinder 22 drives the first connecting block 23 downward, which in turn drives the abutment block 24 downward to press against the electrode group 4 below. At this time, the sensing component below can detect the pressure value of the electrode group 4 in real time and display it on the display screen 6. It can also realize that by setting the pressure value of the electrode group 4, the hydraulic cylinder 22 can perform pressure testing on the electrode group 4 with the set pressure value. This solves the problem of how to perform pressure testing on the electrode group 4, reduces labor intensity, reduces labor costs, saves operation time, and improves the pressure testing rate.

[0033] See Figure 5 As shown: The pressing component 2 also includes a positioning mechanism 25; the positioning mechanism 25 includes a partition 251, a guide rod 252 and a limiting post 253. The partition 251 has a U-shaped structure and is fixedly installed inside the cabinet 1 at the top. The U-shaped groove of the partition 251 has a first through hole on both sides near the hydraulic cylinder 22. The limiting post 253 has a hollow annular structure and is inserted into the first through hole and fixedly connected to the partition 251. A second through hole corresponding to the first through hole is opened at the upper end of the first connecting block 23. The guide rod 252 is coaxially arranged with the limiting post 253 and is slidably engaged. The bottom of the guide rod 252 is inserted into the second through hole and fixedly connected to the first connecting block 23.

[0034] When the output end of the hydraulic cylinder 22 moves slowly downward, the hydraulic cylinder 22 drives the first connecting block 23 downward. At this time, the guide rod 252 moves downward within the limiting post 253, causing the abutment block 24 fixed to the lower end of the first connecting block 23 to move vertically downward, accurately pressing down on the lead-acid battery electrode group 4 below. When the test is completed, the output end of the hydraulic cylinder 22 moves slowly upward. At this time, the guide rod 252 slides upward within the limiting post 253, causing the abutment block 24 to move vertically upward and return to its initial position. This solves the problem of how to accurately perform pressure testing, avoids the situation where the position of the abutment block shifts during the pressing process, and thus avoids uneven force on the electrode group 4, affecting the pressure test value. This ensures the accurate performance of the pressure test and improves the accuracy of the data.

[0035] See Figure 6As shown: The sliding mechanism 31 includes an electric telescopic rod 311, a second connecting block 312, a base plate 313, a slider 314, and a guide rail 315; a third through hole is provided in the middle of the lower end of the fixed frame 21; the electric telescopic rod 311 is fixedly mounted on the workbench 11 and located inside the cabinet 1, and the front end of the electric telescopic rod 311 passes through the third through hole; the second connecting block 312 is fixedly connected to the output end of the electric telescopic rod 311; two guide rails 315 are symmetrically fixed on the workbench 11, and one end of the guide rail 315 is located inside the cabinet 1 and directly below the abutment block 24; the slider 314 is slidably mounted on the guide rail 315; the bottom of the base plate 313 is fixedly connected to the upper end of the slider 314, and the inner sidewall of the base plate 313 is fixedly connected to the second connecting block 312.

[0036] The electric telescopic rod 311 drives the second connecting block 312, which is fixed to its output end, to move forward. The second connecting block 312 pushes the base plate 313 forward. Under the guidance of the slider 314, the base plate 313 slides along the guide rail 315 towards the outer end of the worktable 11. After the sampled lead-acid battery electrode group 4 is placed, the electric telescopic rod 311 drives the second connecting block 312, which is fixed to its output end, to move backward. The second connecting block 312 pulls the base plate 313 backward. Under the guidance of the slider 314, the base plate 313 slides along the guide rail 315 towards the inner end of the worktable 11 until the electrode group 4 is moved directly under the abutment block 24. This solves the problem of how to move the electrode group 4, realizes the automation of pressure testing, improves the pressure testing rate, and ensures the safety of the electrode group 4 during pressure testing.

[0037] See Figures 6-8 As shown: The clamping mechanism 32 includes a base 321, an electric push rod 322, a third connecting block 323, a sliding plate 324, a linkage mechanism 325, and a limiting seat 326; the base 321 is fixedly mounted on the upper end of the base plate 313 and located directly below the abutment block 24. The center of the base 321 is hollowed out to form a groove, and the upper end of the groove is symmetrically fixed with a track; there are two sliding plates 324, which are slidably mounted on the track and located at both ends of the base 321; the linkage mechanism 325 is fixedly mounted on the base 321 and located at the center of the groove; the electric push rod 322 is fixedly mounted on one side of the base 321 and its working direction is horizontal; the third connecting block 323 is fixedly connected to the output end of the electric push rod 322, and the upper end of the third connecting block 323 is fixedly connected to the adjacent sliding plate 324; there are several limiting seats 326 and they are fixedly mounted on both ends of the sliding plate 324. The limiting seat 326 is provided with a positioning plate 3261 and a guide wheel 3262.

[0038] When the sampled lead-acid battery terminal group 4 is placed on the clamping mechanism 32, the drive electric push rod 322 drives the slide plate 324 to slide along the groove track through the third connecting block 323. Under the action of the linkage mechanism 325, the slide plates 324 at both ends of the base 321 slide relative to each other. The limiting bracket 326 slides along with the slide plate 324 and clamps and positions the terminal group 4 on the base 321 through the positioning plate 3261. The guide wheel 3262 reduces the friction between the limiting bracket 326 and the terminal group 4. When the pressure test ends, as the base plate 313 is pushed to the outer end of the worktable 11, the electric push rod 322 pushes the slide plate 324 to move. Under the action of the linkage mechanism 325, the slide plates 324 at both ends of the base 321 slide towards each other. At this time, the limiting bracket 326 clamps and fixes the terminal group 4 again, solving the problem of how to fix the terminal group 4 and avoiding the situation where the position of the lead-acid battery terminal group 4 deviates during the movement, thus affecting the pressure test, ensuring the stability of the movement and the accuracy of the test.

[0039] See Figure 8 As shown: The linkage mechanism 325 includes a bearing seat 3251, a fixing block 3252, a linkage plate 3253, and a linkage rod 3254; the bearing seat 3251 is fixedly installed at the center of the upper end of the groove of the base 321; the fixing block 3252 is fixedly installed at the lower end of the bearing seat 3251; the linkage plate 3253 is rotatably mounted on the bearing seat 3251; there are two linkage rods 3254, one end of the linkage rod 3254 is fixedly connected to one end of the linkage plate 3253, and the other end of the linkage rod 3254 is fixedly connected to the lower end of the slide plate 324.

[0040] When the drive electric push rod 322 drives the slide plate 324 at one end of the base 321 to slide along the groove track via the third connecting block 323, the slide plate 324 pulls the linkage rod 3254 inward. The linkage rod 3254 pushes one end of the linkage plate 3253, causing the linkage plate 3253 to rotate around the shaft seat 3251. At this time, the other end of the linkage plate 3253 moves in the opposite direction and drives the linkage rod 3254 fixed at this end. The linkage rod 3254 at this end further drives the slide plate 324 at the other end of the base 321 to slide along the groove track. The track of the groove slides to achieve the effect of relative movement of the slide plates 324 at both ends of the base 321. The slide plates 324 drive the limit brackets 326 fixed on them to clamp and fix the pole group 4. When it is necessary to loosen the clamping of the pole group 4, the electric push rod 322 drives the slide plate 324 at one end of the base 321 to move outward. Similarly, the slide plates 324 at both ends of the base 321 move towards each other to release the clamping effect of the pole group 4. This solves the problem of how to achieve the linkage effect. The structure is simple, the cost is reduced, and it is easy to maintain.

[0041] See Figure 9As shown: The sensing mechanism 32 includes a mounting bracket 321, a pressure analyzer 322, a guide rod 323, and a contact block 324; a fourth through hole is provided on the worktable 11 directly below the hydraulic cylinder 22; the mounting bracket 321 is fixedly mounted inside the cabinet 1 at the lower end and located below the fourth through hole; the pressure analyzer 322 is fixedly mounted on the mounting bracket 321 and electrically connected to the display screen 6; the guide rod 323 is vertically fixedly mounted on the upper end of the pressure analyzer 322 and passes through the fourth through hole; the contact block 324 is fixedly mounted on the upper end of the guide rod 323, and the upper end of the contact block 324 abuts against the base plate 313.

[0042] When the hydraulic cylinder 22 drives the contact block 24 downward to press against the electrode group 4, the contact block 324 below abuts against the base plate 313 above it and senses the change in pressure value. It then uploads the data to the pressure analyzer 322 in real time. The pressure analyzer 322 analyzes and processes the pressure value of the electrode group 4 in real time and transmits the data to the display screen 6 for specific presentation. This solves the problem of how to present the data in detail, provides convenience for the pressure testing process, realizes the automation of pressure testing, reduces labor intensity, improves personnel utilization, and improves testing efficiency.

[0043] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A pressure testing machine for lead-acid battery electrode assembly, characterized in that, Includes cabinets, pressure components, material transfer components, electrode groups, control boxes, and displays; The cabinet has an L-shaped hollow frame structure. A horizontal workbench is laid on the rack, and a baffle is vertically installed above the workbench. The baffle is fixed to the cabinet. Several buttons are also installed on the cabinet, and the buttons are electrically connected to the control box. The pressure-retaining component is fixed inside the cabinet at the top and its working direction is vertically downward; The material transfer assembly includes a sliding mechanism, a clamping mechanism, and a sensing mechanism. The sliding mechanism is fixedly mounted on the worktable, the clamping mechanism is fixedly located at the upper end of the sliding mechanism, and the sensing mechanism is fixedly located inside the cabinet at the lower part and directly below the pressing assembly. The pole group is placed on the clamping mechanism; The control box is fixedly installed inside the cabinet at the bottom, on one side of the sensing mechanism. The control box is electrically connected to both the pressing component and the material transfer component. The display screen is fixed to the cabinet and is electrically connected to the sensing mechanism; The pressure-absorbing components also include a positioning mechanism; The positioning mechanism includes a partition, a guide rod, and a limiting post. The partition has a U-shaped structure and is fixedly installed inside the cabinet at the top. The U-shaped groove of the partition has first through holes on both sides near the hydraulic cylinder. The limiting post has a hollow annular structure and is inserted into the first through hole and fixedly connected to the partition. The upper end of the first connecting block has a second through hole corresponding to the first through hole. The guide rod is coaxial with the limiting post and slides in fit. The bottom of the guide rod is inserted into the second through hole and fixedly connected to the first connecting block. The clamping mechanism includes a base, an electric push rod, a third connecting block, a sliding plate, a linkage mechanism, and a limit seat; The base is fixed to the upper end of the base plate and located directly below the abutment block. The middle of the base is hollowed out to form a groove, and the upper end of the groove is symmetrically fixed with a track. The skateboard has two parts, which slide on a track and are located at both ends of the base; The linkage mechanism is fixed on the base and located in the center of the groove; The electric actuator is fixed to one side of the base and its working direction is set horizontally; The third connecting block is fixedly connected to the output end of the electric push rod, and the upper end of the third connecting block is fixedly connected to the adjacent sliding plate. The limiting brackets are several and fixed to both ends of the skateboard, and the limiting brackets are equipped with positioning plates and guide wheels; The linkage mechanism includes a bearing seat, a fixed block, a linkage plate, and a linkage rod; The bearing seat is fixedly installed at the center of the upper end of the groove in the base; The fixing block is fixed to the lower end of the bearing seat; The linkage plate is rotatably mounted on the shaft seat; There are two linkage rods. One end of the linkage rod is fixedly connected to one end of the linkage plate, and the other end of the linkage rod is fixedly connected to the lower end of the slide plate. The sliding mechanism includes an electric telescopic rod, a second connecting block, a base plate, a slider, and a guide rail; A third through hole is provided at the lower middle of the fixed frame. The electric telescopic rod is fixed on the workbench and located inside the cabinet. The front end of the electric telescopic rod passes through the third through hole. The second connecting block is fixedly connected to the output end of the electric telescopic rod; Two guide rails are symmetrically fixed on the worktable, with one end of the guide rail located inside the cabinet and directly below the abutment block. The slider is mounted on the guide rail. The bottom of the base plate is fixedly connected to the upper end of the slider, and the inner side wall of the base plate is fixedly connected to the second connecting block. The sensing mechanism includes a mounting bracket, a pressure analyzer, a guide rod, and a contact block; A fourth through hole is provided on the worktable directly below the hydraulic cylinder, and the mounting bracket is fixed inside the cabinet at the lower end and below the fourth through hole. The pressure analyzer is fixed on the mounting bracket and electrically connected to the display screen; The guide rod is vertically fixed to the upper end of the pressure analyzer and passes through the fourth through hole; The contact block is fixed to the upper end of the guide rod, and the upper end of the contact block abuts against the base plate.

2. The lead-acid battery electrode assembly pressure testing machine according to claim 1, characterized in that, The pressing assembly includes a fixing frame, a hydraulic cylinder, a first connecting block, and a pressing block; The mounting bracket is vertically fixed inside the cabinet and its bottom is fixedly connected to the workbench; The hydraulic cylinder is fixedly mounted on a fixed frame and its working direction is vertically downward. The output end of the hydraulic cylinder is fixedly provided with a fixing buckle. The first connecting block is snapped onto the output end of the hydraulic cylinder and its bottom abuts against the fixing buckle; The abutment block is fixed at the lower end of the first connecting block.

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