Corrosion resistance testing device for lead-acid storage battery grid

Abstract

The utility model relates to the technical field of lead-acid storage batteries, in particular to a corrosion resistance testing device for a lead-acid storage battery grid, which comprises a reaction tank and a grid, the grid is positioned in the reaction tank, a tab is fixedly mounted at the upper end of the grid, a sealing cover is fixedly mounted at the upper end of the reaction tank through a bolt, and the sealing cover is fixedly connected with the reaction tank through a bolt. A bottom plate is arranged in the reaction tank in an up-down sliding mode, a fixing rod is fixedly installed on the upper surface of the bottom plate, an adjusting mechanism is fixedly installed at the upper end of the fixing rod, a top plate is fixedly installed on the outer side of the adjusting mechanism, and sleeving blocks are fixedly installed on the two sides of the bottom plate and the two sides of the top plate; according to the corrosion resistance testing device for the lead-acid storage battery grid, the corrosion resistance and the pressure resistance of the grid can be detected, and the corrosion resistance testing device for the lead-acid storage battery grid is worthy of popularization.

Description

Technical Field

[0001] This utility model relates to the field of lead-acid battery technology, and in particular to a test device for the corrosion resistance of lead-acid battery grids. Background Technology

[0002] The grid is a major component of a lead-acid battery, serving as the current-collecting framework of the electrodes. It conducts and collects current, ensuring a uniform current distribution, and also supports the active material, acting as its carrier. Furthermore, during charging and discharging, the density of the active material changes, resulting in variations in its molar volume and causing the plates to expand, contract, or deform. Therefore, the performance of the grid directly affects the battery's lifespan. Testing the grid's corrosion resistance and pressure resistance is necessary; however, existing equipment can only test the grid's corrosion resistance and cannot simultaneously detect deformation before and after energization. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies that make it inconvenient to simultaneously test corrosion resistance and compressive strength, and to propose a test device for the corrosion resistance of lead-acid battery grids.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a corrosion resistance testing device for lead-acid battery grids, including a reaction tank and a grid. The grid is located inside the reaction tank and has an electrode tab fixedly installed at its upper end. A cover is fixedly installed at the upper end of the reaction tank by bolts. A bottom plate is slidably arranged inside the reaction tank. A fixing rod is fixedly installed on the upper surface of the bottom plate. An adjustment mechanism is fixedly installed at the upper end of the fixing rod. A top plate is fixedly installed on the outside of the adjustment mechanism. Sleeve blocks are fixedly installed on both sides of the bottom plate and the top plate. The sleeve blocks are snapped at the upper and lower ends of the grid. A pressing mechanism is fixedly installed between the bottom plate and the top plate, and one side of the pressing mechanism abuts against the grid.

[0006] Preferably, the adjusting mechanism includes a linkage block, the lower end of which is fixedly connected to the upper end of the fixing rod, a screw is rotatably provided on the upper end of the linkage block, a sleeve is fixedly installed in the middle of the top plate, the screw is threadedly connected to the top of the sleeve and extends through to the top of the sleeve, and support rods are fixedly installed on both sides of the linkage block, the upper ends of the support rods extend through to the top of the top plate and abut against the lower surface of the cover.

[0007] Preferably, the linkage block has a square cross-section and is slidably disposed inside the housing.

[0008] Preferably, the extrusion mechanism includes a limiting seat, which is fixedly installed on the surfaces of the bottom plate and the top plate that are close to each other. The limiting seat has a mating groove at its end, and an abutment frame is fitted inside the mating groove. An extrusion frame is fixedly installed on the surface of the abutment frame that is close to the grid.

[0009] Preferably, the upper and lower ends of the contact frame are chamfered on the side away from the extrusion frame, and the inner wall of the mating groove is in contact with the chamfer of the contact frame.

[0010] Preferably, the surface of the extrusion frame near the grid is uniformly provided with multiple anti-slip protrusions.

[0011] The present invention provides a lead-acid battery grid corrosion resistance testing device, which has the following advantages: During operation, the rotating screw drives the casing and top plate downwards. The movement of the top plate drives the upper sleeve block downwards, which clamps the grid. The downward movement of the top plate also drives the upper limiting seat downwards. The contact frame is squeezed by the mating groove, causing the compression frame to press against the grid. The grid remains in a fixed position under the compression of the compression frame. The compression of the sleeve block causes defective grids to deform, allowing the overall compressive strength of the grid to be tested. By comparing the changes in the overall size and weight of the grid before and after power-on, the corrosion resistance and compressive strength of the grid can be tested simultaneously. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the lead-acid battery grid corrosion resistance testing device proposed in this utility model.

[0013] Figure 2 This is a longitudinal cross-sectional view of a lead-acid battery grid corrosion resistance testing device proposed in this utility model.

[0014] Figure 3 This is a side view of the internal components of a lead-acid battery grid corrosion resistance testing device proposed in this utility model.

[0015] In the diagram: 1. Reaction tank; 2. Base plate; 3. Fixing rod; 4. Linkage block; 5. Top plate; 6. Housing; 7. Screw; 8. Support rod; 9. Connecting block; 10. Cover; 11. Grid; 12. Electrode; 13. Limiting seat; 14. Mating groove; 15. Contact frame; 16. Extrusion frame. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Example 1: Refer to Figure 1-3 A corrosion resistance testing device for lead-acid battery grids includes a reaction tank 1 and a grid 11. The grid 11 is located inside the reaction tank 1, and tabs 12 are fixedly installed on its upper end. The tabs 12 can be connected to an external charge / discharge machine via leads. The external charge / discharge machine clamps two tabs 12 of the grid 11 respectively, allowing for constant current charging, thus enabling corrosion resistance testing of the grid 11 during operation. A cover 10 is bolted to the upper end of the reaction tank 1, and the cover 10 is easily detachable from the reaction tank 1.

[0018] A bottom plate 2 is slidably mounted inside the reaction tank 1. A fixing rod 2 is fixedly installed on the upper surface of the bottom plate 2. An adjustment mechanism is fixedly installed at the upper end of the fixing rod 3. A top plate 5 is fixedly installed on the outside of the adjustment mechanism. The height of the top plate 5 can be adjusted by the adjustment mechanism. Sleeve blocks 9 are fixedly installed on both sides of the bottom plate 2 and the top plate 5. The sleeve blocks 9 are snapped at the upper and lower ends of the grid 11. The upper and lower ends of the grid 11 are squeezed by the sleeve blocks 9, which can restrict the grid 11 between the sleeve blocks 9. A pressing mechanism is fixedly installed between the bottom plate 2 and the top plate 5. One side of the pressing mechanism abuts against the grid 11. The pressing mechanism abuts against the grid 11, which can make the grid 11 fit against the side wall surface of the reaction tank 1 and can position the grid 11.

[0019] The adjustment mechanism includes a linkage block 4, the lower end of which is fixedly connected to the upper end of the fixing rod 3. A screw 7 is rotatably mounted on the upper end of the linkage block 4. A sleeve 6 is fixedly installed in the middle of the top plate 5. The linkage block 4 has a square cross-section and is slidably mounted inside the sleeve 6. The linkage block 4 and the sleeve 6 slide together to prevent the top plate 5 from tilting during the up-and-down movement. The screw 7 is threadedly connected to the top of the sleeve 6 and extends through to the top of the sleeve 6. Rotating the screw 7 can drive the sleeve 6 and the top plate 5 to move up and down. Support rods 8 are fixedly mounted on both sides of the linkage block 4. The upper end of the support rod 8 extends through to the top of the top plate 5 and abuts against the lower surface of the cover 10. After the upper end of the support rod 8 abuts against the cover 10, the positions of the linkage block 4 and the fixing rod 3 are fixed. Rotating the screw 7 can drive the top plate 5 to move up and down. The downward movement of the top plate 5 can drive the upper sleeve block 9 to move down. The sleeve block 9 can squeeze the grid 11.

[0020] The extrusion mechanism includes a limiting seat 13, which is fixedly installed on the surfaces of the base plate 2 and the top plate 5 that are close to each other. A mating groove 14 is provided at the end of the limiting seat 13, and a contact frame 15 is fitted inside the mating groove 14. An extrusion frame 16 is fixedly installed on the surface of the contact frame 15 near the grid 11. Chamfers are provided on the sides of the contact frame 15 away from the extrusion frame 16 at both ends. The inner wall of one side of the mating groove 14 fits against the chamfer of the contact frame 15. The shapes of the mating groove 14 and the contact frame 15 are as shown in the attached figure. Figure 1 As shown. When the rotating screw 7 drives the top plate 5 to move downward, the downward movement of the top plate 5 drives the upper limiting seat 13 to move downward. The distance between the upper and lower limiting seats 13 becomes smaller, and the contact frame 15 is squeezed and will penetrate deeper into the mating groove 14. The contact frame 15 will move closer to the grid 11 along the mating groove 14. The movement of the contact frame 15 can drive the extrusion frame 16 to move. The movement of the extrusion frame 16 can extrude pressure on the grid 11. The surface of the extrusion frame 16 near the grid 11 is uniformly provided with multiple anti-slip ridges. The anti-slip ridges can increase the friction between the grid 11 and the extrusion frame 16, and enhance the extrusion effect of the extrusion frame 16 on the grid 11.

[0021] Working Principle: During operation, this lead-acid battery grid corrosion resistance testing device first weighs the grid 11, tabs 12, and leads, and measures the overall dimensions of the grid 11. By rotating the screw 7, the base plate 2 and top plate 5 are brought closer together, and the grid 11 is slightly clamped and fixed by the sleeve block 9. Next, the grid 11, base plate 2, and top plate 5 are placed into the reaction tank 1, and the cover 10 is fixed to the upper end of the reaction tank 1 with bolts. The support rod 8 is compressed by the cover 10, and the positions of the base plate 2, fixing rod 3, and linkage block 4 are fixed. Then, rotating the screw 7 moves the housing 6 downwards, which in turn moves the top plate 5 downwards. The top plate 5 then moves the upper sleeve block 9 downwards. The upper and lower sleeve blocks 9 further clamp the grid 11. Simultaneously, the downward movement of the top plate 5 moves the upper limit... The seat 13 moves downward, and the upper and lower limit seats 13 move closer to each other. The contact frame 15 is squeezed by the mating groove 14, which drives the extrusion frame 16 to press against the grid 11. The grid 11 can maintain its position under the extrusion frame 16. The extrusion of the sleeve block 9 can deform the unqualified grid 11, and the overall compressive strength of the grid 11 can be tested. After the grid 11 is fixed, the electrolyte is poured into the reaction tank 1, and the electrolyte covers the grid 11. The charge and discharge machine is started to allow the grid 11 to discharge continuously. After the discharge is completed, the corrosion products on the grid 11 are cleaned with a special solution. Then the weight of the grid 11, the tab 12 and the lead wire are weighed again to calculate the corrosion weight loss of the grid 11. The overall size of the grid 11 is measured and the deformation of the grid 2 under test is calculated, so as to detect the corrosion resistance and compressive strength of the grid.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A test device for corrosion resistance of lead-acid battery grids, comprising a reaction tank (1) and a grid (11), wherein the grid (11) is located within the reaction tank (1) and a tab (12) is fixedly mounted on its upper end, characterized in that, The upper end of the reaction tank (1) is fixedly installed with a cover (10) by bolts. The reaction tank (1) is provided with a bottom plate (2) that slides up and down inside. A fixing rod (3) is fixedly installed on the upper surface of the bottom plate (2). An adjustment mechanism is fixedly installed on the upper end of the fixing rod (3). A top plate (5) is fixedly installed on the outside of the adjustment mechanism. A sleeve block (9) is fixedly installed on both sides of the bottom plate (2) and the top plate (5). The sleeve block (9) is snapped at the upper and lower ends of the grid (11). A pressing mechanism is fixedly installed between the bottom plate (2) and the top plate (5). One side of the pressing mechanism abuts against the grid (11).

2. The lead-acid battery grid corrosion resistance testing device according to claim 1, characterized in that, The adjustment mechanism includes a linkage block (4), the lower end of which is fixedly connected to the upper end of the fixing rod (3), and a screw (7) is rotatably provided on the upper end of the linkage block (4). A housing (6) is fixedly installed in the middle of the top plate (5). The screw (7) is threadedly connected to the top of the housing (6) and extends through to the top of the housing (6). Support rods (8) are fixedly installed on both sides of the linkage block (4). The upper end of the support rod (8) extends through to the top of the top plate (5) and abuts against the lower surface of the cover (10).

3. The lead-acid battery grid corrosion resistance testing device according to claim 2, characterized in that, The linkage block (4) has a square cross-section and is slidably disposed inside the housing (6).

4. The lead-acid battery grid corrosion resistance testing device according to claim 1, characterized in that, The extrusion mechanism includes a limiting seat (13), which is fixedly installed on the surfaces of the bottom plate (2) and the top plate (5) that are close to each other. A mating groove (14) is provided at the end of the limiting seat (13), and an abutment frame (15) is provided inside the mating groove (14). An extrusion frame (16) is fixedly installed on the surface of the abutment frame (15) near the grid (11).

5. The lead-acid battery grid corrosion resistance testing device according to claim 4, characterized in that, The upper and lower ends of the contact frame (15) are chamfered on the side away from the extrusion frame (16), and the inner wall of the mating groove (14) is in contact with the chamfer of the contact frame (15).

6. The lead-acid battery grid corrosion resistance testing device according to claim 5, characterized in that, The surface of the extrusion frame (16) near the grid (11) is uniformly provided with multiple anti-slip protrusions.

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