Tool for detecting air tightness of AGM start-stop lead storage battery safety valve

Abstract

The utility model provides an AGM start-stop lead storage battery safety valve air tightness detection tool comprising a pedestal provided with an inner cavity, the pedestal is also provided with an air inlet pipe communicated with the inner cavity, and the top surface of the pedestal is provided with a detection hole communicated with the inner cavity; the clamping unit comprises two clamping plates arranged above the base, at least one of the two clamping plates is a movable clamping plate, clamping surfaces of the two clamping plates are provided with clamping cavities for cooperatively clamping the AGM start-stop lead storage battery safety valve to be detected, one of the clamping plates is also provided with a detection channel, and the detection channel is communicated with the clamping cavity. One end of the detection channel is opened on the top surface of the clamping plate, and the other end of the detection channel is opened on the side wall of the clamping cavity. The tool is simple in structure, easy to manufacture, easy to operate and capable of improving the detection efficiency of the air tightness of the safety valve.

Description

A tooling for testing the airtightness of the safety valve in an AGM start-stop lead-acid battery. Technical Field

[0001] This utility model belongs to the field of safety valve testing technology, specifically relating to a tooling for testing the airtightness of the safety valve of an AGM start-stop lead-acid battery. Background Technology

[0002] Valve-regulated lead-acid batteries (VRABs) are named for their safety valves, which ensure airtightness and regulate internal pressure. The safety valve is a crucial component of VRABs; its switching characteristics and sealing performance significantly impact the safety and reliability of the battery's operation. Therefore, airtightness testing of the safety valve is an essential step.

[0003] Existing airtightness testing tools are complex in structure, and the testing process is complicated and inefficient. For example, patent application CN119984690A discloses a safety valve airtightness testing device, including a workbench, a drive box, and two sets of limiting bases. The testing device is fixedly installed on the top outer wall of the workbench, and the testing device includes a base plate and a mounting base. By rotating the first control block, the adjusting screw rotates within the limiting hole, causing the clamping block to slide within the sliding groove, thereby clamping the safety valve. The inflator installed on the outer wall of the limiting base is then activated to inflate the airbag. The inflator starts working, introducing external air through the inflation pipe and inflation interface into the airbag. As gas continuously enters, the airbag gradually expands, and during its expansion, it tightly adheres to the area of ​​the safety valve to be tested, effectively sealing the testing area of ​​the safety valve. Summary of the Invention

[0004] To address the aforementioned technical problems in the existing technology, this utility model provides a tooling for testing the airtightness of the safety valve of an AGM start-stop lead-acid battery.

[0005] This utility model provides a tooling for testing the airtightness of the safety valve of an AGM start-stop lead-acid battery, comprising:

[0006] The base has an inner cavity, and the base is also provided with an air inlet pipe communicating with the inner cavity. The top surface of the base is provided with a detection hole communicating with the inner cavity.

[0007] The clamping unit includes two clamping plates disposed above the base. At least one of the two clamping plates is a movable clamping plate. The clamping surfaces of the two clamping plates have clamping cavities that cooperate to clamp the safety valve of the AGM start-stop lead-acid battery to be tested. One of the clamping plates is also provided with a detection channel. One end of the detection channel is open on the top surface of the clamping plate, and the other end is open on the side wall of the clamping cavity.

[0008] Furthermore, a pressure gauge is provided on the air inlet pipe of the base to monitor the internal pressure of the base; an air inlet valve is also provided on the outside of the pressure gauge to control the flow of compressed air.

[0009] Furthermore, the same end of the two clamping plates is connected to one end of the top surface of the base, and the other end of the two clamping plates is provided with a locking mechanism for fixing the two clamping plates relative to each other.

[0010] Furthermore, one end of one of the clamping plates is rotatably connected to the top surface of the base via a vertical pivot; the same end of the other clamping plate is fixed to the top surface of the base or rotatably connected to the top surface of the base via another vertical pivot.

[0011] Furthermore, the locking mechanism consists of bolts passing through the ends of the two clamping plates and nuts that engage with the bolts.

[0012] Furthermore, the top surface of the clamping plate with the detection channel is provided with a groove, and one end of the detection channel is located in the groove.

[0013] Furthermore, the top surface of the base is provided with a plurality of detection holes at intervals, and correspondingly, the clamping surfaces of the two clamping plates of the clamping unit are provided with a plurality of clamping cavities.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention provides a tooling for testing the airtightness of the safety valve of an AGM start-stop lead-acid battery. The tooling is simple in structure, easy to manufacture and operate, and can improve the testing efficiency of the safety valve's airtightness. Attached Figure Description

[0016] Figure 1 is a front view schematic diagram of the tooling used for airtightness testing of the safety valve of AGM start-stop lead-acid battery;

[0017] Figure 2 is a top view of the tooling used for airtightness testing of the safety valve of AGM start-stop lead-acid battery.

[0018] Figure 3 is a cross-sectional view of one of the clamping chambers when the clamping unit clamps the safety valve;

[0019] Figure 4 is a cross-sectional view of one of the clamping chambers when the clamping unit is not clamping the safety valve.

[0020] Figure label:

[0021] Base 1, air inlet pipe 11, detection hole 12, pressure gauge 13, air inlet valve 14, clamping unit 2, clamping plate 21, clamping cavity 22, detection channel 23, groove 24, locking mechanism 25, rotating shaft 26, exhaust hole 27, top opening S, side wall opening W. Detailed Implementation

[0022] As shown in Figures 1-4, this embodiment provides a tooling for testing the airtightness of the safety valve of an AGM start-stop lead-acid battery. The tooling includes a base 1 and a clamping unit 2.

[0023] The base 1 has an inner cavity, and the base 1 is also provided with an air inlet pipe 11 that communicates with the inner cavity. The top surface of the base 1 is provided with a detection hole 12 that communicates with the inner cavity.

[0024] A pressure gauge 13 is provided on the air inlet pipe 11 of the base 1 to monitor the internal pressure of the base 1; an air inlet valve 14 is also provided on the outside of the pressure gauge 13 to control the on / off of compressed air.

[0025] The clamping unit 2 includes two clamping plates 21 located above the base 1. At least one of the two clamping plates 21 is a movable clamping plate 21. The clamping surfaces of the two clamping plates 21 have clamping cavities 22 that cooperate to clamp the safety valve of the AGM start-stop lead-acid battery to be tested.

[0026] One of the clamping plates 21 is also provided with a detection channel 23. One end of the detection channel 23 is open on the top surface of the clamping plate 21, and the opening on the top surface is denoted as S. The other end is open on the side wall of the clamping cavity 22, and the opening on the side wall is denoted as W. The top surface of the clamping plate 21 with the detection channel 23 is provided with a groove 24, and the opening S on the top surface of the detection channel 23 is located in the groove 24.

[0027] The same end of the two clamping plates 21 is connected to one end of the top surface of the base 1, and the other end of the two clamping plates 21 is provided with a locking mechanism 25 for fixing the two clamping plates 21 relative to each other. The locking mechanism 25 consists of bolts passing through the ends of the two clamping plates 21 and nuts that cooperate with the bolts.

[0028] One end of one of the clamping plates 21 is rotatably connected to the top surface of the base 1 via a vertical pivot 26; the other end of the clamping plate 21 is fixed to the top surface of the base 1 or rotatably connected to the top surface of the base 1 via another vertical pivot 26.

[0029] The top surface of the base 1 is provided with multiple detection holes 12 at intervals, and correspondingly, the clamping surfaces of the two clamping plates 21 of the clamping unit 2 are provided with multiple clamping cavities 22.

[0030] The bottom surface of the AGM start-stop lead-acid battery safety valve has an air inlet, and the bottom of the outer periphery has an external thread that mates with the threaded installation of the lead-acid battery. Above the area where the external thread is located, there are two sealing rings on the outer periphery. The area between the two sealing rings on the outer periphery of the safety valve has an exhaust hole 27.

[0031] Working process: Apply soapy water to the opening on the top surface of the groove, and introduce compressed air from the bottom of the AGM start-stop lead-acid battery safety valve. When the pressure is >10~15Kpa, open the sealing rubber cover, release the pressure, and the gas will be discharged from the exhaust port of the safety valve and flow into the groove through the detection channel. The opening and closing valve pressure is determined by observing the bubble situation at the opening on the top surface.

Claims

1. A tooling for testing the airtightness of the safety valve in an AGM start-stop lead-acid battery, characterized in that, include: The base has an inner cavity, and the base is also provided with an air inlet pipe communicating with the inner cavity. The top surface of the base is provided with a detection hole communicating with the inner cavity. The clamping unit includes two clamping plates disposed above the base. At least one of the two clamping plates is a movable clamping plate. The clamping surfaces of the two clamping plates have clamping cavities that cooperate to clamp the safety valve of the AGM start-stop lead-acid battery to be tested. One of the clamping plates is also provided with a detection channel. One end of the detection channel is open on the top surface of the clamping plate, and the other end is open on the side wall of the clamping cavity.

2. The tooling for airtightness testing of the safety valve of an AGM start-stop lead-acid battery according to claim 1, characterized in that, The base has a pressure gauge on its air inlet pipe, and an air inlet valve is located on the outside of the pressure gauge.

3. The tooling for airtightness testing of the safety valve of an AGM start-stop lead-acid battery according to claim 1, characterized in that, The same end of the two clamping plates is connected to one end of the top surface of the base, and the other end of the two clamping plates is provided with a locking mechanism for fixing the two clamping plates relative to each other.

4. The tooling for airtightness testing of the safety valve of an AGM start-stop lead-acid battery according to claim 3, characterized in that, One end of one of the clamping plates is rotatably connected to the top surface of the base via a vertical pivot; the other clamping plate is fixed to the top surface of the base at the same end or rotatably connected to the top surface of the base via another vertical pivot.

5. The tooling for airtightness testing of the safety valve of an AGM start-stop lead-acid battery according to claim 3, characterized in that, The locking mechanism consists of bolts passing through the ends of the two clamping plates and nuts that engage with the bolts.

6. The tooling for airtightness testing of the safety valve of an AGM start-stop lead-acid battery according to claim 1, characterized in that, The top surface of the clamping plate with the detection channel is provided with a groove, and one end of the detection channel is located in the groove.

7. The tooling for airtightness testing of the safety valve of an AGM start-stop lead-acid battery according to claim 1, characterized in that, The top surface of the base is provided with multiple detection holes at intervals, and correspondingly, the clamping surfaces of the two clamping plates of the clamping unit are provided with multiple clamping cavities.

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