Buffer type sealing performance testing device for storage battery

Abstract

When the testing device is fixed on an equipment frame and equipment works, the testing device moves downwards according to the up-down stroke of the equipment frame, the lower part of the device is provided with a sealing element which is in contact with a valve port of the storage battery, and the sealing element is compressed and buffered by an elastic part; the sealing member is in close contact with the storage battery valve port to seal the storage battery shell and prevent gas leakage, the buffer part is used for buffering pressure and effectively preventing the test device from descending too fast and causing impact damage to the storage battery valve port, and synchronous gas is injected into the storage battery from top to bottom through the central shaft of the connecting part to achieve the pressure required by gas tightness test. And the sealing test is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy lead-acid battery manufacturing, in particular to a battery buffer-type sealing test device. Background Art

[0002] At present, lead-acid batteries have attracted much attention and are widely used due to their high safety and maintenance-free characteristics.

[0003] Sealing is a key component of battery safety testing. Domestic battery specifications vary widely, with numerous housing filling ports and valve port designs (including varying safety valve port sizes). Battery sealing testing is essential during production. Different specifications, heights, and valve port sizes require different airtightness tooling. Frequent replacement is time-consuming, labor-intensive, and inefficient. Furthermore, improperly positioned equipment heights can easily damage the housing due to impact forces.

[0004] In summary, how to efficiently implement sealing tests on batteries of different specifications and valve port sizes, and design spring buffering applications to avoid damage to the shell caused by impact forces at high efficiency, is an urgent problem that technicians in this field need to solve. Utility Model Content

[0005] The purpose of the utility model is to provide a battery buffer type sealing test device to efficiently realize the sealing test of batteries of different specifications and different valve port sizes, and to design a spring buffer application to avoid damage to the shell caused by the impact force under high efficiency.

[0006] To solve the above technical problems, the present invention provides a battery buffer seal test device, comprising:

[0007] The central axis of the connecting part is provided with a vent hole on the central axis for axial ventilation, and the lower part of the central axis of the connecting part is provided with a transverse extension portion extending away from the central axis as a fixing platform;

[0008] An equipment rack, wherein the equipment rack is provided with an equipment rack through-hole, and the equipment rack is sleeved with the central axis of the connecting portion through the equipment rack through-hole for mounting a main body of the air tightness detection device;

[0009] an elastic component, disposed between the fixed platform and the equipment rack, for controlling the up and down travel of the main body of the air tightness detection device and for buffering the downward movement of the main body of the air tightness detection device;

[0010] The sealing member is arranged on the bottom surface of the fixed platform, and the lower surface of the sealing member contacts the valve port of the shell of the battery to be tested, and is used for sealing the contact position to prevent leakage after being squeezed.

[0011] Among them, it also includes a T-shaped flange set on the upper surface of the equipment frame, the T-shaped flange is sleeved on the central axis of the connecting part through a central through hole, and the central axis of the connecting part is bolted to the equipment frame through an axially arranged screw hole.

[0012] Among them, it also includes an external threaded opening arranged on the upper side wall of the central axis of the connecting part and a nut member fixed on the external threaded opening. The nut member is provided with a middle hole and is connected to the external threaded opening of the central axis of the connecting part through the middle hole. The outside of the nut member is provided with a wrench socket for tightening.

[0013] Among them, it also includes a second elastic component arranged between the nut and the T-shaped flange, which is used to control the up and down stroke of the air tightness detection device body and to buffer the upward process of the air tightness detection device body. The second elastic component includes a second elastic through hole and is sleeved on the central axis of the connecting part through the second elastic through hole.

[0014] Among them, the elastic component and the second elastic component are springs or rubber blocks, the lateral dimension of the fixed platform is larger than the lateral dimension of the elastic component, the elastic component is provided with an elastic component through hole, and is sleeved on the central axis of the connecting part through the elastic component through the through hole, and the diameter of the elastic component through hole is larger than the diameter of the equipment rack through hole.

[0015] It also includes a protruding shaft arranged on the central axis of the connecting part below the fixed platform, the sealing member is provided with a central through hole, and is sleeved on the protruding shaft through the central through hole, the diameter of the central through hole is less than or equal to the outer diameter of the protruding shaft, and the cross section of the protruding shaft is the same shape and size as the cross section of the central axis of the connecting part.

[0016] Wherein, the sealing member is a rubber sealing member or a silicone sealing member.

[0017] Wherein, the central axis of the connection part is the central axis of the polyvinyl chloride connection part or the central axis of the resin connection part.

[0018] Wherein, the fixed platform, the protruding shaft, and the central axis of the connecting part are an integrated structure.

[0019] Among them, it also includes scale lines arranged on the side wall of the central axis of the connecting part.

[0020] The battery buffer seal test device provided by the embodiment of the utility model has the following advantages compared with the prior art:

[0021] The battery buffer sealing test device provided by the embodiment of the present invention, when the test device is fixed to the equipment frame, the test device moves downward according to the up and down stroke of the equipment frame when the equipment is working, and the seal at the lower part of the device contacts the battery valve port, and is compressed and buffered by the elastic component, and the seal is in close contact with the battery valve port to achieve the sealing of the battery shell and prevent gas leakage. The buffer component is used to buffer the pressure and effectively prevent the test device from descending too quickly and causing impact damage to the battery valve port. The synchronous gas passes through the central axis of the connecting part and is injected into the battery from top to bottom to reach the required pressure for the airtightness test and realize the sealing test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic structural diagram of an embodiment of a battery buffer-type sealing test device provided by the present utility model;

[0024] Figure 2 This is a schematic cross-sectional view of another embodiment of the battery buffer-type sealing test device provided by the present utility model.

[0025] Among them, 1-T-type flange, 2-equipment frame, 3.-Nut, 4-connecting part center axis, 5-seal, 6-elastic component, 7. Bolt, 8-battery housing valve port, 21-positioning hole, 31-wrench bayonet, 41-vent, 42-external thread port, 43-internal thread port, 44-fixing platform, 45-protruding shaft, 51-center through hole. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Please refer to Figure 1-Figure 2 , Figure 1 A schematic structural diagram of an embodiment of a battery buffer-type sealing test device provided by the present utility model; Figure 2This is a schematic cross-sectional view of another embodiment of the battery buffer-type sealing test device provided by the present utility model.

[0028] In a specific embodiment, the battery buffered sealing test device includes:

[0029] The central axis of the connecting portion 4 is provided with a vent hole 41 on the central axis for axial ventilation, and a transverse extension portion 44 is provided at the lower portion of the central axis of the connecting portion 4 and extends away from the central axis as a fixing platform;

[0030] An equipment rack 2, wherein the equipment rack 2 is provided with an equipment rack 2 through-hole, and the equipment rack 2 is sleeved with the central axis 4 of the connecting portion through the equipment rack 2 through-hole for mounting the main body of the air tightness detection device;

[0031] The elastic component 6 is provided between the fixed platform 44 and the equipment rack 2, and is used to control the up and down travel of the main body of the air tightness detection device, and to cushion the downward movement of the main body of the air tightness detection device;

[0032] The sealing member 5 is arranged on the bottom surface of the fixing platform 44, and the lower surface of the sealing member 5 contacts the valve port 8 of the battery housing to be tested, and is used to seal the contact position after being squeezed to prevent leakage.

[0033] When the test device is fixed to the equipment frame 2, the test device moves downward according to the up and down stroke of the equipment frame 2 when the equipment is working. The seal 5 at the bottom of the device contacts the valve port 8 of the battery shell. Under the compression buffer force of the elastic component 6, the seal 5 is in close contact with the valve port 8 of the battery shell to achieve the sealing of the battery shell and prevent gas leakage. The buffer component is used to buffer the pressure and effectively prevent the test device from descending too fast and causing impact damage to the valve port 8 of the battery shell. The synchronous gas passes through the central axis 4 of the connecting part and is injected into the battery from top to bottom to reach the required pressure for the airtightness test and realize the sealing test.

[0034] Since the equipment rack 2 in the present application is used to install the test device, the thickness of the equipment rack 2 is relatively small, so that it is easy to shake during use, causing damage to the equipment.

[0035] In order to solve this technical problem, in one embodiment, the battery buffer sealing test device also includes a T-shaped flange 1 arranged on the upper surface of the equipment frame 2, and the T-shaped flange 1 is sleeved on the central axis 4 of the connecting part through a central through hole, and the central axis 4 of the connecting part is connected to the equipment frame 2 by bolts 7 through axially arranged screw holes.

[0036] By arranging a T-shaped flange 1 on the upper surface of the equipment rack 2, even if the test device shakes laterally during use, it will be limited and eliminated by the T-shaped flange 1, thereby improving test efficiency and reducing damage to the test device.

[0037] In this application, there is no limitation on the height of the vertical portion of the T-shaped flange 1. In addition to the external T-shaped flange 1, other types of limiting components can also be used in this application.

[0038] In order to further improve the limiting function of the T-shaped flange 1 and avoid damage due to excessive upward movement energy, in one embodiment, the battery buffer sealing test device also includes an external threaded opening 42 arranged on the upper side wall of the central axis 4 of the connecting part and a nut member 3 fixed on the external threaded opening 42. The nut member 3 is provided with a middle hole and is connected to the external threaded opening 42 of the central axis 4 of the connecting part through the middle hole. The outside of the nut member 3 is provided with a wrench bayonet 31 for tightening.

[0039] The nut member 3 is installed on the upper part of the central axis 4 of the connecting portion to limit the T-shaped flange 1, thereby ensuring the limitation of the upward stroke of the elastic member 6.

[0040] In order to further reduce damage to the equipment, in one embodiment, the battery buffered sealing test device also includes a second elastic component 6 arranged between the nut member 3 and the T-shaped flange 1, which is used to control the up and down stroke of the air tightness detection device body and to buffer the upward process of the air tightness detection device body. The second elastic component 6 includes a second elastic through hole and is sleeved on the central axis 4 of the connecting part through the second elastic through hole.

[0041] By placing the second elastic component 6 between the nut 3 and the T-shaped flange 1, direct collision between the T-shaped flange 1 and the nut 3 can be reduced or avoided during the upward movement of the main body of the airtightness detection device, thereby improving its reliability in use.

[0042] The present application does not limit the shape, structure and size of the elastic component 6 and the second elastic component 6. In one embodiment, the elastic component 6 and the second elastic component 6 are springs or rubber blocks, the lateral dimension of the fixed platform 44 is larger than the lateral dimension of the elastic component 6, the elastic component 6 is provided with an elastic component 6 through hole, and is sleeved on the central axis 4 of the connecting part through the elastic component 6 through the through hole, and the diameter of the elastic component 6 through hole is larger than the diameter of the through hole of the equipment rack 2.

[0043] By providing a through hole of the elastic component 6 and sleeved on the central axis 4 of the connecting portion through the through hole of the elastic component 6, and the diameter of the through hole of the elastic component 6 is larger than the diameter of the through hole of the equipment rack 2, it is possible to ensure that the through hole of the equipment rack 2 will not be entered during the up and down movement, thereby improving the reliability of use.

[0044] In addition to the above structure, in the present application, limit blocks can be set at both ends of the elastic component 6, and the size of the limit blocks is larger than the diameter of the through hole of the equipment rack 2, which can also achieve the above-mentioned limiting effect.

[0045] In order to further improve the installation efficiency of the seal 5 in the present application, in one embodiment, the battery buffer type sealing test device also includes a protruding shaft 45 arranged on the central axis 4 of the connecting part and located below the fixed platform 44. The seal 5 is provided with a central through hole 51 and is sleeved on the protruding shaft 45 through the central through hole 51. The diameter of the central through hole 51 is less than or equal to the outer diameter of the protruding shaft 45. The cross section of the protruding shaft 45 is the same shape and size as the cross section of the central axis 4 of the connecting part.

[0046] In this application, a protruding shaft 45 is provided and the sealing member 5 is sleeved on the protruding shaft 45. At the same time, the diameter of the central through hole 51 is less than or equal to the outer diameter of the protruding shaft 45. The gas input from the central shaft 4 of the connecting part to the protruding shaft 45 can be completely sealed by the sealing member 5, thereby improving the sealing efficiency.

[0047] In the present application, there is no limitation on the cross-sectional shape and size of the protruding shaft 45 . By making the cross-sectional shape and size thereof the same as those of the central axis 4 of the connecting portion, the process difficulty can be reduced.

[0048] The material of the sealing member 5 is not limited in the present application. The sealing member 5 is a rubber sealing member 5 or a silicone sealing member 5 or other types of sealing members 5 .

[0049] In the present application, gas is introduced through the central through hole of the connecting part central axis 4 as long as the structural strength is ensured. The connecting part central axis 4 is a polyvinyl chloride connecting part central axis or a resin connecting part central axis, or other types of connecting part central axes.

[0050] Preferably, the fixing platform 44, the protruding shaft 45, and the central axis 4 of the connecting portion are an integrated structure.

[0051] In order to further improve the accuracy of stroke control of the sealing test, in one embodiment, the battery buffer sealing test device further includes scale lines arranged on the side wall of the central axis 4 of the connecting portion.

[0052] By the setting of the scale lines, the up and down stroke of the accurate control test device can be adjusted preliminarily, thereby improving the accuracy of the test. In addition, it is also possible to judge whether the elastic component 6 currently installed meets the requirements.

[0053] In one embodiment, the battery buffer-type sealing test device has one end connected to an external gas input pipe and the other end connected to the exhaust portion of the battery valve port. It can be used for sealing tests such as injecting air or other required gases into the battery. By optimizing its own structure, the battery sealing test can be carried out quickly, more stably and more efficiently.

[0054] The device consists of two parts, the upper and lower parts of which penetrate all other structures through the connecting part central axis component 4. The upper part includes a T-shaped flange 1, a device frame 2, a nut 3, a connecting part central axis 4, and bolts 7; the lower part includes the device frame 2, the connecting part central axis 4, a rubber seal 5, a spring 6, and a battery case valve port 8.

[0055] The upper portion of the connecting portion, through the central axis 4, passes through the center hole of the equipment frame 2, the T-shaped flange 1, and the nut 3. The length of the center hole of the T-shaped flange 1 is adjusted to determine the exposed length of the central axis 4. The outer threaded opening 42 at the upper end of the connecting portion is connected and tightened to the inner threaded opening of the nut 3. The base of the T-shaped flange 1 has a positioning hole 21, through which the bolt 7 is inserted to securely connect to the equipment frame 2.

[0056] The center of the connecting shaft 4 is hollow, with a convenient internal threaded port 43 at the top for attaching a gas inlet fixture or hose. Gas enters through the internal threaded port 43 and exits through the protruding shaft 45, passing through the rubber seal 5 and into the battery housing valve port 8.

[0057] The lower connecting portion's central axis 4 passes through the equipment frame 2, spring 6, and rubber seal 5. The lower connecting portion's central axis 4 features a fixed platform 44, which is an integrated fixed platform. A spring 6 is located between the upper surface of the fixed platform and the equipment frame 2. The inner diameter of spring 6 is larger than the diameter of the center hole of the equipment frame 2. The rubber seal 5 is connected to the protruding shaft 45 of the connecting portion's central axis 4. The downward movement of the equipment frame 2 compresses the spring 6, which squeezes the rubber seal 5 and the battery case valve port 8. The reverse thrust of the spring 6 creates a tight connection and seal between the rubber seal 5 and the battery case valve port. The length of the spring 6 matches the vertical travel of the equipment frame 2. The spring's cushioning allows the rubber seal 5 and the connecting portion's central axis 4 to move rapidly and repeatedly up and down without causing the rubber seal 5 to descend too quickly or travel too far, thereby excessively squeezing the valve port and damaging the battery case valve port.

[0058] The connecting portion's central shaft 4 can be made of materials such as PVC (polyvinyl chloride) or resin. The lower portion of the central shaft is connected to the inner diameter of a rubber seal 51 via a protruding shaft 45. The rubber seal 5 is made of elastic rubber. The inner diameter of the rubber seal 5, i.e., the inner diameter of the central through hole 51, is smaller than the outer diameter of the protruding shaft 45, resulting in a tight, squeezed connection. The rubber seal 5 is removable, allowing for quick replacement depending on the size of the battery case valve port 8. It can also be used as a universal component. The rubber seal is soft and can be quickly pressed into contact with the battery case valve port 8 without damaging the valve port.

[0059] The central shaft 4, the equipment frame 2 and the T-shaped flange 1 of the joint are connected by a bearing-type lasso. The joint moves up and down, and it is necessary to add lubricating oil substances to increase the lubricity.

[0060] The usage process is as follows:

[0061] When the test device is fixed to the equipment rack and the equipment is in operation, the test device moves downward according to the up and down travel of the equipment rack. The center-hole rubber seal at the bottom of the device contacts the battery's injection hole (or valve port). Under the spring's compression buffer force, the center-hole rubber seal tightly contacts the battery shell injection hole (or valve port), sealing the battery shell and preventing gas leakage. The center-hole rubber seal can be designed and sized to match the shell injection hole (or valve port), providing high versatility and eliminating the need for frequent switching. At the same time, the spring is designed to buffer pressure to effectively prevent the test device from descending too quickly and causing impact damage to the battery shell injection hole (or valve port). Synchronous gas is injected into the battery from top to bottom through the center connection, reaching the required pressure for airtightness testing and completing the airtightness test.

[0062] To sum up, the battery buffer type sealing test device provided by the embodiment of the present invention, when the test device is fixed to the equipment frame, the test device moves downward according to the up and down stroke of the equipment frame when the equipment is working, and the seal at the bottom of the device contacts the battery valve port, and is compressed and buffered by the elastic component. The seal is in close contact with the battery valve port to achieve sealing of the battery shell and prevent gas leakage. The buffer component is used to buffer the pressure and effectively prevent the test device from descending too fast and causing impact damage to the battery valve port. The synchronous gas passes through the central axis of the connecting part and is injected into the battery from top to bottom to reach the required pressure for airtightness test and realize the sealing test.

[0063] The above describes in detail the battery buffer seal test device provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A battery buffer sealing test device, characterized in that: include: The central axis of the connecting part is provided with a vent hole on the central axis for axial ventilation, and the lower part of the central axis of the connecting part is provided with a transverse extension portion extending away from the central axis as a fixing platform; An equipment rack, wherein the equipment rack is provided with an equipment rack through-hole, and the equipment rack is sleeved with the central axis of the connecting portion through the equipment rack through-hole for mounting a main body of the air tightness detection device; an elastic component, disposed between the fixed platform and the equipment rack, for controlling the up and down travel of the main body of the air tightness detection device and for buffering the downward movement of the main body of the air tightness detection device; A sealing member is arranged on the bottom surface of the fixed platform, and the lower surface of the sealing member contacts the valve port of the housing of the battery to be tested, and is used for sealing the contact position after being squeezed.

2. The battery buffer sealing test device according to claim 1, characterized in that: It also includes a T-shaped flange set on the upper surface of the equipment frame, the T-shaped flange is sleeved on the central axis of the connecting part through a central through hole, and the central axis of the connecting part is bolted to the equipment frame through an axially arranged screw hole.

3. The battery buffer sealing test device according to claim 1, characterized in that: It also includes an external threaded opening arranged on the upper side wall of the central axis of the connecting part and a nut member fixed on the external threaded opening. The nut member is provided with a center hole and is connected to the external threaded opening of the central axis of the connecting part through the center hole. The outside of the nut member is provided with a wrench socket for tightening.

4. The battery buffer sealing test device according to claim 3, characterized in that: It also includes a second elastic component arranged between the nut and the T-shaped flange, which is used to control the up and down stroke of the air tightness detection device body and to buffer the upward process of the air tightness detection device body. The second elastic component includes a second elastic through hole and is sleeved on the central axis of the connecting part through the second elastic through hole.

5. The battery buffer sealing test device according to claim 4, characterized in that: The elastic component and the second elastic component are springs or rubber blocks. The lateral dimension of the fixed platform is larger than the lateral dimension of the elastic component. The elastic component is provided with an elastic component through hole and is sleeved on the central axis of the connecting part through the elastic component through hole. The diameter of the elastic component through hole is larger than the diameter of the equipment rack through hole.

6. The battery buffer sealing test device according to claim 1, characterized in that: It also includes a protruding shaft arranged on the central axis of the connecting part below the fixed platform. The sealing member is provided with a central through hole and is sleeved on the protruding shaft through the central through hole. The diameter of the central through hole is less than or equal to the outer diameter of the protruding shaft. The cross section of the protruding shaft has the same shape and size as the cross section of the central axis of the connecting part.

7. The battery buffer sealing test device according to claim 6, characterized in that: The sealing member is a rubber sealing member or a silicone sealing member.

8. The battery buffer sealing test device according to claim 7, characterized in that: The central axis of the connection part is a central axis of a polyvinyl chloride connection part or a central axis of a resin connection part.

9. The battery buffer sealing test device according to claim 8, characterized in that: The fixed platform, the protruding shaft, and the central axis of the connecting portion are an integrated structure.

10. The battery buffer sealing test device according to claim 1, characterized in that: It also includes scale lines arranged on the side wall of the central axis of the connecting part.

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