Device for detecting sealing performance of lead-acid storage battery

Abstract

The utility model relates to the technical field of lead-acid storage battery detection, and discloses a lead-acid storage battery sealing performance detection device which comprises a detection table and a storage battery body, a liquid injection pipe is arranged on the outer surface of the top of the storage battery body, and an electric push rod is fixedly installed on the downward outer surface of the top of a supporting frame. And the output end of the electric push rod is fixedly connected with a pressure applying box, a sealing sleeve is arranged in an air outlet pipe, the outer surface of the top of the pressure applying box fixedly communicates with an air inlet pipe, a micro air pump is fixedly installed on the outer surface of the top of the pressure applying box, and an air bag fixedly communicates with the outer surface of a connecting pipe. According to the lead-acid storage battery sealing performance detection device, the electric push rod drives the pressure applying box to be matched with the sealing sleeve, so that the gas outlet pipe and the liquid injection pipe are connected and sealed, the liquid injection pipe can be effectively protected, the liquid adding pipe can be prevented from being cracked after the gas outlet pipe and the liquid adding pipe are connected, and the liquid adding pipe of the lead-acid storage battery is prevented from being damaged during testing.

Description

Technical Field

[0001] The utility model relates to the technical field of lead-acid battery detection, in particular to a lead-acid battery sealing detection device. Background Art

[0002] Lead-acid batteries are mainly batteries that use acidic aqueous solutions as electrolytes. During the battery manufacturing process, testing is a very important link, and the test of battery air tightness is the top priority among many testing links. If the battery is not sealed well, it will cause leakage, rapid drop in open circuit voltage, decrease in battery charge performance and many other problems, and may even cause serious disasters such as fire.

[0003] The existing detection device generally uses an air pipe and a liquid filling pipe to seal and then introduces air pressure into the lead-acid battery. Then, if the air pressure drops within a specified time, the sealing performance of the lead-acid battery is defective. The sealing method of the air pipe and the liquid filling pipe in the existing detection device is generally pressurized sealing. A sealing ring is set at the lower end of the air pipe. Pressure is used to make the sealing ring tightly against the upper end of the liquid filling pipe to achieve sealing. However, the end cover of the lead-acid battery is easily damaged under a large pressure. Therefore, a lead-acid battery sealing detection device is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a lead-acid battery sealing detection device to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lead-acid battery sealing detection device, comprising a detection platform and a battery body, a liquid injection tube is provided on the top outer surface of the battery body, the top outer surface of the detection platform is fixedly connected to a support frame, an electric push rod is fixedly installed on the top outer surface of the support frame facing downward, the output end of the electric push rod is fixedly connected to a pressure box, the bottom outer surface of the pressure box is fixedly connected to an air outlet pipe, a sealing sleeve is provided inside the air outlet pipe, the top outer surface of the pressure box is fixedly connected to an air inlet pipe, a micro air pump is fixedly installed on the top outer surface of the pressure box, the output end of the micro air pump is fixedly connected to the air inlet pipe, the front outer surface of the pressure box is fixedly connected to a connecting pipe, and the outer surface of the connecting pipe is fixedly connected to an air bag.

[0006] Furthermore, the inner surface of the detection platform is rotatably connected to a first positive and negative screw rod, the outer surface of the first positive and negative screw rod is fixedly connected to a first crank, the outer surface of the first positive and negative screw rod is threadedly connected to two threaded plates, the top outer surfaces of the two threaded plates are fixedly connected to connecting blocks, and the top outer surface of the connecting block is fixedly connected to a fixing plate.

[0007] Furthermore, a rotating shaft is rotatably inserted on the top outer surface of the fixed plate, and a second crank is fixedly connected to the top outer surface of the rotating shaft, and an outer surface of the rotating shaft away from the second crank is fixedly connected to an active bevel gear, a second forward and reverse screw rod is rotatably penetrated through the outer surface of the fixed plate, and a driven bevel gear is fixedly sleeved on the outer surface of the second forward and reverse screw rod, and the active bevel gear is movably engaged with the outer surface of the driven bevel gear, and the outer surface of the second forward and reverse screw rod is threadedly connected to two L-shaped plates, and the outer surfaces of the fixed plate and the L-shaped plate are fixedly connected to silicone pads.

[0008] Furthermore, the inner diameter of the sealing sleeve is a cone that gradually expands from top to bottom.

[0009] Furthermore, a slide groove is provided on the top outer surface of the detection platform, and the connecting block is slidably connected to the inside of the slide groove.

[0010] Furthermore, the outer surface of the fixing plate is fixedly penetrated by a limiting rod, and the two L-shaped plates are movably sleeved on the outer surface of the limiting rod.

[0011] Furthermore, a one-way valve is installed inside the connecting pipe, and the flow direction of the one-way valve is from top to bottom.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The lead-acid battery sealing detection device drives the pressure box to move downward through the electric push rod, so that the air outlet pipe is sleeved on the outer surface of the injection pipe, and the sealing between the air outlet pipe and the injection pipe is increased under the action of the sealing sleeve, and then the micro air pump is turned on, and the micro air pump applies pressure to the air inlet pipe, so that the internal pressure of the pressure box increases, and the air pressure passes through the air outlet pipe and the injection pipe into the interior of the battery body. After a period of time, the air pump stops working and stops applying pressure to the pressure box. During this process, if the sealing is good, the airbag will expand. After a period of time, the changes of the airbag are observed. If the airbag becomes smaller or does not expand when pressure is started, it means that the sealing of a certain position of the battery body is not good. During this process, the pressure box is driven by the electric push rod to cooperate with the sealing sleeve, so that the air outlet pipe and the injection pipe are connected and sealed, and the injection pipe can be effectively protected, and the filling pipe can be prevented from being cracked after the air outlet pipe is connected to the filling pipe, so as to prevent the filling pipe of the lead-acid battery from being damaged during testing.

[0014] 2. The lead-acid battery sealing detection device, when fixing the battery body, places the battery body on the detection table, and according to the size of the battery body, rotates the first crank, the first crank drives the first positive and negative screws to rotate, so that the two threaded plates move, the two threaded plates respectively drive the two connecting blocks to move the fixed plates, so that the two fixed plates clamp the left and right sides of the battery body, and then by rotating the second crank, the second crank drives the rotating shaft to rotate so that the active bevel gear rotates, the active bevel gear drives the driven bevel gear to rotate, so that the second positive and negative screws rotate, so as to adjust the distance between the two L-shaped plates, and the front and rear outer surfaces of the battery body are clamped by the two L-shaped plates, so that batteries of different sizes can be fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the front view structure of the utility model when placing the battery body;

[0017] Figure 3 This is a schematic diagram of the interior of the pressure box and its related structures of the utility model;

[0018] Figure 4 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the interior of the fixed plate and its related structures of the utility model.

[0020] In the figure: 1. test bench; 2. battery body; 3. injection pipe; 4. electric push rod; 5. pressure box; 6. air outlet pipe; 7. sealing sleeve; 8. air inlet pipe; 9. micro air pump; 10. first positive and negative screw rod; 11. first crank; 12. threaded plate; 13. connecting block; 14. fixing plate; 15. rotating shaft; 16. second crank; 17. driving bevel gear; 18. second positive and negative screw rod; 19. driven bevel gear; 20. L-shaped plate; 21. connecting pipe; 22. air bag. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention.

[0022] Please refer to Figure 1-Figure 5The utility model provides a technical solution: a lead-acid battery sealing detection device, comprising a detection platform 1 and a battery body 2, a liquid injection pipe 3 is arranged on the top outer surface of the battery body 2, a support frame is fixedly connected to the top outer surface of the detection platform 1, an electric push rod 4 is fixedly installed on the top outer surface of the support frame facing downward, a pressure box 5 is fixedly connected to the output end of the electric push rod 4, an air outlet pipe 6 is fixedly connected to the bottom outer surface of the pressure box 5, a sealing sleeve 7 is arranged inside the air outlet pipe 6, an air inlet pipe 8 is fixedly connected to the top outer surface of the pressure box 5, a micro air pump 9 is fixedly installed on the top outer surface of the pressure box 5, the output end of the micro air pump 9 is fixedly connected to the air inlet pipe 8, a connecting pipe 21 is fixedly connected to the front outer surface of the pressure box 5, and an air bag 22 is fixedly connected to the outer surface of the connecting pipe 21. In this embodiment, the electric push rod 4 is opened, and the electric push rod 4 is opened. The rod 4 drives the pressure box 5 to move downward, so that the air outlet pipe 6 is sleeved on the outer surface of the injection pipe 3, and the sealing sleeve 7 increases the sealing between the air outlet pipe 6 and the injection pipe 3, which can effectively protect the injection pipe 3 and prevent the injection pipe from being broken after the air outlet pipe 6 is connected to the injection pipe, so as to prevent the injection pipe of the lead-acid battery from being damaged during testing. Then, the micro air pump 9 is turned on, and the micro air pump 9 applies pressure to the air inlet pipe 8, so that the internal pressure of the pressure box 5 increases, and the air pressure passes through the air outlet pipe 6 and the injection pipe 3 into the interior of the battery body 2. After a period of time, the air pump stops working and stops applying pressure to the pressure box 5. During this process, if the sealing is good, the airbag 22 will expand. After a period of time, observe the changes in the airbag 22. If the airbag 22 becomes smaller or does not expand when pressure is started, it means that the sealing of a certain position of the battery body 2 is not good.

[0023] The inner surface of the testing platform 1 is rotatably connected to the first forward and reverse screw rod 10, the outer surface of the first forward and reverse screw rod 10 is fixedly connected to the first crank 11, the outer surface of the first forward and reverse screw rod 10 is threadedly connected to two threaded plates 12, the top outer surfaces of the two threaded plates 12 are fixedly connected to connecting blocks 13, and the top outer surface of the connecting block 13 is fixedly connected to a fixed plate 14. In this embodiment, the first crank 11 is rotated, and the first crank 11 drives the first forward and reverse screw rod 10 to rotate, so that the two threaded plates 12 move, and the two threaded plates 12 respectively drive the two connecting blocks 13 to move the fixed plate 14, so that the two fixed plates 14 clamp the left and right sides of the battery body 2.

[0024] A rotating shaft 15 is rotatably inserted into the top outer surface of the fixed plate 14, and a second crank handle 16 is fixedly connected to the top outer surface of the rotating shaft 15. The outer surface of the rotating shaft 15 away from the second crank handle 16 is fixedly connected to a driving bevel gear 17. A second forward and reverse screw rod 18 is rotatably penetrated through the outer surface of the fixed plate 14, and a driven bevel gear 19 is fixedly sleeved on the outer surface of the second forward and reverse screw rod 18. The driving bevel gear 17 is movably meshed with the outer surface of the driven bevel gear 19. The outer surface of the second forward and reverse screw rod 18 is threadedly connected to two L-shaped plates 20. The fixed plate 14 and the L-shaped The outer surfaces of the plates 20 are fixedly connected with silicone pads. In the present embodiment, the second crank 16 is rotated, and the second crank 16 drives the rotating shaft 15 to rotate, so that the active bevel gear 17 is rotated, and the active bevel gear 17 drives the driven bevel gear 19 to rotate, so that the second forward and reverse screw rod 18 is rotated, thereby adjusting the distance between the two L-shaped plates 20, and the front and rear outer surfaces of the battery body 2 are clamped by the two L-shaped plates 20, and the friction between the L-shaped plate 20 and the fixed plate 14 and the battery body 2 is increased by the silicone pad, and the battery is protected.

[0025] The inner diameter of the sealing sleeve 7 is a cone that gradually expands from top to bottom. In this embodiment, the inner diameter of the sealing sleeve 7 is a cone, so that after the air outlet pipe 6 contacts the injection pipe 3, as the electric push rod 4 moves downward, the inner diameter of the sealing sleeve 7 becomes smaller, thereby increasing the sealing between the sealing sleeve 7 and the injection pipe 3.

[0026] A slide groove is provided on the top outer surface of the detection platform 1, and the connecting block 13 is slidably connected to the inside of the slide groove. In this embodiment, the slide groove provides a channel for the movement of the connecting block 13. When the first forward and reverse screw rod 10 rotates, the connecting block 13 slides inside the slide groove to prevent the threaded plate 12 from rotating with the rotation of the first forward and reverse screw rod 10.

[0027] The outer surface of the fixed plate 14 is fixedly penetrated by the limiting rod, and the two L-shaped plates 20 are movably sleeved on the outer surface of the limiting rod. In this embodiment, when the second forward and reverse screw rod 18 rotates, the L-shaped plate 20 slides on the outer surface of the limiting rod to prevent the L-shaped plate 20 from rotating with the rotation of the second forward and reverse screw rod 18.

[0028] A one-way valve is installed inside the connecting pipe 21, and the flow direction of the one-way valve is from top to bottom. In this embodiment, by setting the one-way valve, it is prevented that the air pressure leaks from the inside of the pressure box 5 through the connecting pipe 21 after the air pump stops working, thereby affecting the detection effect.

[0029] Working principle: When the utility model is in use, the battery body 2 is fixed on the test bench 1, and the electric push rod 4 is turned on. The electric push rod 4 drives the pressure box 5 to move downward, so that the air outlet pipe 6 is sleeved on the outer surface of the injection pipe 3, and the sealing between the air outlet pipe 6 and the injection pipe 3 is increased under the action of the sealing sleeve 7, which can effectively protect the injection pipe 3 and prevent the injection pipe from being broken after the air outlet pipe 6 is connected to the injection pipe, so as to prevent the injection pipe of the lead-acid battery from being damaged during the test. Then, the micro air pump 9 is turned on, and the micro air pump 9 applies pressure to the air inlet pipe 8, so that the internal pressure of the pressure box 5 increases, and the air pressure passes through the air outlet pipe 6 and the injection pipe 3 into the interior of the battery body 2. After a period of time, the air pump stops working and stops applying pressure to the pressure box 5. During this process, if the sealing is good, the airbag 22 will expand. After a period of time, the changes in the airbag 22 are observed. If the airbag 22 becomes smaller or does not expand when pressure is started, it means that the sealing of a certain position of the battery body 2 is not good.

[0030] When fixing the battery body 2, the battery body 2 is placed on the testing platform 1, and the first crank 11 is rotated according to the size of the battery body 2. The first crank 11 drives the first forward and reverse screw rods 10 to rotate, so that the two threaded plates 12 move, and the two threaded plates 12 respectively drive the two connecting blocks 13 to move the fixed plate 14, so that the two fixed plates 14 clamp the left and right sides of the battery body 2, and then by rotating the second crank 16, the second crank 16 drives the rotating shaft 15 to rotate so that the active bevel gear 17 rotates, and the active bevel gear 17 drives the driven bevel gear 19 to rotate, so that the second forward and reverse screw rods 18 rotate, thereby adjusting the distance between the two L-shaped plates 20, and the front and rear outer surfaces of the battery body 2 are clamped by the two L-shaped plates 20, so that batteries of different sizes can be fixed.

[0031] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A lead-acid battery sealing detection device, comprising a detection platform (1) and a battery body (2), characterized in that: The top outer surface of the battery body (2) is provided with a liquid injection pipe (3), the top outer surface of the test bench (1) is fixedly connected to a support frame, the top outer surface of the support frame is fixedly installed with an electric push rod (4), the output end of the electric push rod (4) is fixedly connected to a pressure box (5), the bottom outer surface of the pressure box (5) is fixedly connected to an air outlet pipe (6), the air outlet pipe (6) is provided with a sealing sleeve (7) inside, the top outer surface of the pressure box (5) is fixedly connected to an air inlet pipe (8), the top outer surface of the pressure box (5) is fixedly installed with a micro air pump (9), the output end of the micro air pump (9) is fixedly connected to the air inlet pipe (8), the front outer surface of the pressure box (5) is fixedly connected to a connecting pipe (21), and the outer surface of the connecting pipe (21) is fixedly connected to an air bag (22).

2. A lead-acid battery sealing detection device according to claim 1, characterized in that: The inner surface of the detection platform (1) is rotatably connected to a first forward and reverse screw rod (10), the outer surface of the first forward and reverse screw rod (10) is fixedly connected to a first crank (11), the outer surface of the first forward and reverse screw rod (10) is threadedly connected to two threaded plates (12), the top outer surfaces of the two threaded plates (12) are fixedly connected to a connecting block (13), and the top outer surface of the connecting block (13) is fixedly connected to a fixing plate (14).

3. A lead-acid battery sealing detection device according to claim 2, characterized in that: A rotating shaft (15) is rotatably inserted into the top outer surface of the fixed plate (14), and a second crank handle (16) is fixedly connected to the top outer surface of the rotating shaft (15). An outer surface of the rotating shaft (15) away from the second crank handle (16) is fixedly connected to an active bevel gear (17). A second forward and reverse screw rod (18) is rotatably penetrated through the outer surface of the fixed plate (14), and a driven bevel gear (19) is fixedly sleeved on the outer surface of the second forward and reverse screw rod (18). The active bevel gear (17) is movably meshed with the outer surface of the driven bevel gear (19). Two L-shaped plates (20) are threadedly connected to the outer surface of the second forward and reverse screw rod (18), and silicone pads are fixedly connected to the outer surfaces of the fixed plate (14) and the L-shaped plate (20).

4. A lead-acid battery sealing detection device according to claim 1, characterized in that: The inner diameter of the sealing sleeve (7) is in the shape of a cone that gradually expands from top to bottom.

5. A lead-acid battery sealing detection device according to claim 2, characterized in that: A sliding groove is provided on the top outer surface of the detection platform (1), and the connecting block (13) is slidably connected to the inside of the sliding groove.

6. A lead-acid battery sealing detection device according to claim 3, characterized in that: The outer surface of the fixing plate (14) is fixedly penetrated by a limiting rod, and the two L-shaped plates (20) are movably sleeved on the outer surface of the limiting rod.

7. A lead-acid battery sealing detection device according to claim 1, characterized in that: A one-way valve is installed inside the connecting pipe (21), and the flow direction of the one-way valve is from top to bottom.

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