Power battery sealing test explosion-proof plug

Abstract

The utility model discloses a power battery sealing test explosion -proof plug, including explosion -proof plug main part, the inside of explosion -proof plug main part is provided with the conveying pipe, the top right side of conveying pipe is installed with the switch valve, the top of switch valve is provided with the air inlet, and the top middle of conveying pipe is installed with the exhaust pipe, the outside top of air inlet is installed with the sealing assembly, the top of exhaust pipe is installed with the pressure -relief assembly, and the pressure -relief assembly includes the pressure -relief pipe, and the bottom of the four -around pressure -relief pipe is provided with the exhaust hole, and the top of pressure -relief pipe is installed with the support ring, the inside screw thread connection of support ring has the adjusting assembly, one side of explosion -proof plug main part is inlayed and is connected with the explosion -proof assembly, the utility model discloses the cooperation of sealing assembly and switch valve uses to facilitate the sealing when the explosion -proof plug is used alone, and the effect of dustproof is played to the air inlet through the sealing cover, improves the explosion -proof plug's anti -blocking effect and practicality, avoids the problem that dust enters the air inlet and leads to the blockage.

Description

Technical Field

[0001] This utility model relates to the field of power battery sealing test technology, specifically to a power battery sealing test explosion-proof plug. Background Technology

[0002] A power battery is a rechargeable battery primarily used to power electric vehicles, electric bicycles, and energy storage devices. It features high energy density, high power output, and long cycle life, making it a core component in the new energy field. Common types of power batteries include lithium-ion batteries, currently the most widely used, such as ternary lithium batteries (high energy density) and lithium iron phosphate batteries (better safety and cycle life). Their core function is to store electrical energy and release power to drive equipment. Performance directly affects the equipment's range, power output, and lifespan. During the production process of power batteries, a sealing test is required. This involves connecting an explosion-proof plug to an explosion-proof valve to seal the valve. The plug is then connected to a tester to apply pressure to the inside of the power battery for testing.

[0003] The existing plugs for power battery sealing tests still have certain defects. During use, it is not convenient to seal the air inlet, so the device cannot achieve a sealing effect on its own. In addition, the device does not have an explosion-proof structure, so it is easy to damage the equipment when the inflation pressure is too high. Utility Model Content

[0004] The purpose of this invention is to provide an explosion-proof plug for sealing tests of power batteries, so as to solve the problem of poor sealing and explosion-proof effects in existing products.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] An explosion-proof plug for sealing tests of power batteries includes an explosion-proof plug body, an internal delivery pipe, a switch valve mounted on the top right side of the delivery pipe with an air inlet at the top of the switch valve, and an exhaust pipe mounted in the middle of the top of the delivery pipe. A pressure relief assembly is mounted on the top of the exhaust pipe, including a pressure relief pipe with exhaust holes around its bottom perimeter and a support ring mounted on its top. A sealing assembly is mounted on the top outer side of the air inlet. An adjustment assembly is threadedly connected to the support ring. An explosion-proof assembly is fitted onto one side of the explosion-proof plug body.

[0007] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0008] In one alternative: a sealing ring is installed on the left side of the delivery pipe, and the sealing ring is annular.

[0009] In one alternative: an air vent is provided on the left side of the inside of the conveying pipe, and a strong magnetic block is installed in the middle of the left side of the conveying pipe.

[0010] In one alternative: the sealing assembly includes a connecting ring mounted on the top outer side of the air inlet, a rubber rod mounted on one side of the connecting ring, and a sealing cap mounted on one side of the rubber rod.

[0011] In one alternative: the adjusting assembly includes a screw rotatably connected inside a support ring, a throttle handle mounted on the top of the screw, a support plate mounted on the bottom of the screw, a support spring mounted on the bottom of the support plate, and a sealing block mounted on the bottom of the support spring, the sealing block being slidably connected inside a pressure relief pipe and an exhaust pipe.

[0012] In one alternative: the explosion-proof component includes an explosion-proof valve, the right side of which is fitted inside the explosion-proof plug body, the explosion-proof valve is threaded inside one side of the battery pack, a retaining ring is installed inside the explosion-proof valve, and a limit ring is installed on one side of the inside of the retaining ring.

[0013] In one alternative: a connecting component is installed on one side of the limiting ring.

[0014] In one alternative: the connecting assembly includes a connecting spring mounted on one side of the limiting ring, a support block mounted on one side of the connecting spring, a connecting rod mounted in the middle of one side of the support block, and a sealing plate mounted on one side of the connecting rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model uses a combination of sealing components and a switching valve to facilitate sealing when the explosion-proof plug is used alone. The sealing cover prevents dust from entering the air inlet, improving the anti-clogging effect and practicality of the explosion-proof plug and avoiding the problem of dust entering the air inlet and causing blockage.

[0017] 2. This utility model, through the combined use of the pressure relief component and the adjustment component, facilitates the pressure relief and explosion prevention effect when the battery pack pressure is too high, avoiding the problem of explosion damage caused by excessive inflation, and improving the explosion prevention effect of the explosion-proof plug. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the explosion-proof plug body and sealing assembly of this utility model.

[0020] Figure 3 This is a schematic diagram of the pressure relief component and the adjustment component of this utility model.

[0021] Figure 4 This is a schematic diagram of the explosion-proof component and the connecting component of this utility model.

[0022] In the diagram: 1. Explosion-proof plug body; 11. Delivery pipe; 12. Switch valve; 13. Air inlet; 14. Connecting ring; 15. Rubber rod; 16. Sealing cap; 17. Exhaust pipe; 18. Sealing ring; 19. Air outlet; 110. Strong magnetic block; 2. Pressure relief pipe; 21. Exhaust port; 22. Support ring; 23. Screw; 24. Throttle; 25. Support plate; 26. Support spring; 27. Sealing block; 3. Explosion-proof valve; 31. Fixing ring; 32. Limiting ring; 33. Connecting spring; 34. Support block; 35. Connecting rod; 36. Sealing plate; 37. Battery pack. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 4 As shown, this embodiment provides an explosion-proof plug for sealing tests of power batteries, including an explosion-proof plug body 1. The explosion-proof plug body 1 has a delivery pipe 11 inside. A switch valve 12 is installed on the top right side of the delivery pipe 11. An air inlet 13 is provided on the top of the switch valve 12. An exhaust pipe 17 is installed in the middle of the top of the delivery pipe 11. A sealing ring 18 is installed on the left side of the delivery pipe 11. The sealing ring 18 is annular. An air outlet 19 is opened on the left side inside the delivery pipe 11. A strong magnetic block 110 is installed in the middle of the left side of the delivery pipe 11.

[0026] A sealing assembly is installed on the top outer side of the air inlet 13; the sealing assembly includes a connecting ring 14, which is installed on the top outer side of the air inlet 13, a rubber rod 15 is installed on one side of the connecting ring 14, and a sealing cover 16 is installed on one side of the rubber rod 15.

[0027] The switching valve 12 facilitates the opening or closing of the delivery pipe 11. The rubber rod 15 on one side of the connecting ring 14 is connected to the sealing cover 16, which facilitates the sealing of the air inlet 13, preventing dust from entering the interior of the air inlet 13 and causing blockage. The strong magnetic block 110 is attracted to the sealing plate 36, thereby driving the sealing plate 36 to open. The sealing ring 18 is then used to seal the explosion-proof valve 3, improving the practicality of the device.

[0028] like Figures 1 to 4As shown, a pressure relief assembly is installed on the top of the exhaust pipe 17. The pressure relief assembly includes a pressure relief pipe 2. Exhaust holes 21 are opened around the bottom of the pressure relief pipe 2. A support ring 22 is installed on the top of the pressure relief pipe 2.

[0029] An adjusting assembly is internally threaded onto the support ring 22. The adjusting assembly includes a screw 23, which is rotatably connected inside the support ring 22. A handle 24 is mounted on the top of the screw 23, and a support plate 25 is mounted on the bottom of the screw 23. A support spring 26 is mounted on the bottom of the support plate 25, and a sealing block 27 is mounted on the bottom of the support spring 26. The sealing block 27 is slidably connected inside the pressure relief pipe 2 and the exhaust pipe 17.

[0030] By rotating the handle 24, the screw 23 is driven to rotate inside the support ring 22, thereby driving the support plate 25 to move up and down inside the pressure relief pipe 2, thus adjusting the position of the sealing block 27 and the support spring 26, so as to adjust the pressure required for the sealing block 27 to move above the exhaust port 21, thereby improving the practicality and explosion-proof effect of the device.

[0031] like Figure 1 and Figure 4 As shown, an explosion-proof component is fitted and connected to one side of the explosion-proof plug body 1. The explosion-proof component includes an explosion-proof valve 3, the right side of which is fitted and connected inside the explosion-proof plug body 1. The explosion-proof valve 3 is threadedly connected to the inside of one side of the battery pack 37. A retaining ring 31 is installed inside the explosion-proof valve 3, and a limit ring 32 is installed on one side of the inside of the retaining ring 31.

[0032] A connecting assembly is installed on one side of the limiting ring 32. The connecting assembly includes a connecting spring 33, which is installed on one side of the limiting ring 32. A support block 34 is installed on one side of the connecting spring 33. A connecting rod 35 is installed in the middle of one side of the support block 34. A sealing plate 36 is installed on one side of the connecting rod 35.

[0033] In this embodiment, the explosion-proof valve 3 is connected to the battery pack 37 via a threaded connection. The connecting spring 33 is supported by the limiting ring 32 inside the fixing ring 31. The contraction of the connecting spring 33 causes the connecting rod 35 to slide inside the limiting ring 32, thereby opening the sealing plate 36.

[0034] The above embodiment discloses an explosion-proof plug for power battery sealing test. The explosion-proof valve 3 is installed via a threaded connection between the explosion-proof valve 3 and the battery pack 37. The explosion-proof plug body 1 and the explosion-proof valve 3 are then fitted together. Opening the explosion-proof plug body 1 seals the connection with the explosion-proof valve 3. A strong magnetic block 110 attracts the sealing plate 36, causing the connecting spring 33 to contract and the connecting rod 35 to slide inside the limiting ring 32, facilitating the opening of the sealing plate 36. Gas is connected to an air inlet 13 and an air pipe, through which gas is fed into the delivery pipe 11 via a switch valve 12. Gas is then fed from the explosion-proof valve 3 into the battery pack 37 via an outlet 19 for sealing testing. This improves the convenience of the device. Furthermore, the device can be used independently; closing the switch valve 12 seals the explosion-proof valve 3. The sealing cover 16 is connected to the rubber rod 15, and the rotating sealing cover 16 seals the air inlet 13, preventing dust from entering the air inlet 13 and causing blockage. This improves the practicality and convenience of the device. When the internal pressure of the battery pack 37 is too high, the air pressure pushes the sealing block 27 upward, causing the support spring 26 to contract. When the sealing block 27 moves above the exhaust port 21, the exhaust port 21 is vented, preventing the problem of explosion damage caused by excessive air pressure during the inspection of the battery pack 37. This improves the explosion-proof effect of the device. By rotating the handle 24, the screw 23 is driven to rotate inside the support ring 22, thereby driving the support plate 25 to move up and down inside the pressure relief pipe 2. This allows for adjustment of the position of the sealing block 27, thereby increasing the pressure required for the pressure relief pipe 2 to relieve pressure and improving the convenience of the device.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power battery sealing test explosion-proof plug, comprising an explosion-proof plug body (1), characterized in that, The explosion-proof plug body (1) is provided with a delivery pipe (11) inside. A switch valve (12) is installed on the top right side of the delivery pipe (11). An air inlet (13) is provided on the top of the switch valve (12). An exhaust pipe (17) is installed in the middle of the top of the delivery pipe (11). A pressure relief assembly is installed on the top of the exhaust pipe (17). The pressure relief assembly includes a pressure relief pipe (2). An exhaust hole (21) is opened at the bottom of the pressure relief pipe (2). A support ring (22) is installed on the top of the pressure relief pipe (2). A sealing assembly is installed on the top of the outer side of the air inlet (13). An adjustment assembly is threaded inside the support ring (22). An explosion-proof assembly is fitted and connected to one side of the explosion-proof plug body (1).

2. The explosion-proof plug for sealing tests of power batteries according to claim 1, characterized in that, A sealing ring (18) is installed on the left side of the delivery pipe (11), and the sealing ring (18) is annular.

3. The explosion-proof plug for sealing tests of power batteries according to claim 1, characterized in that, An air outlet (19) is provided on the left side of the inside of the conveying pipe (11), and a strong magnetic block (110) is installed in the middle of the left side of the conveying pipe (11).

4. The explosion-proof plug for sealing tests of power batteries according to claim 1, characterized in that, The sealing assembly includes a connecting ring (14) mounted on the top outer side of the air inlet (13), a rubber rod (15) mounted on one side of the connecting ring (14), and a sealing cap (16) mounted on one side of the rubber rod (15).

5. The explosion-proof plug for sealing tests of power batteries according to claim 1, characterized in that, The adjusting assembly includes a screw (23) which is rotatably connected inside a support ring (22). A throttle (24) is mounted on the top of the screw (23), and a support plate (25) is mounted on the bottom of the screw (23). A support spring (26) is mounted on the bottom of the support plate (25), and a sealing block (27) is mounted on the bottom of the support spring (26). The sealing block (27) is slidably connected inside the pressure relief pipe (2) and the exhaust pipe (17).

6. The explosion-proof plug for sealing tests of power batteries according to claim 1, characterized in that, The explosion-proof assembly includes an explosion-proof valve (3), the right side of which is fitted into the interior of the explosion-proof plug body (1), the explosion-proof valve (3) is threaded into the interior of one side of the battery pack (37), a fixing ring (31) is installed inside the explosion-proof valve (3), and a limit ring (32) is installed on one side of the interior of the fixing ring (31).

7. The explosion-proof plug for sealing tests of power batteries according to claim 6, characterized in that, A connecting component is installed on one side of the limiting ring (32).

8. The explosion-proof plug for sealing test of a power battery according to claim 7, characterized in that, The connecting assembly includes a connecting spring (33), which is installed on one side of a limiting ring (32). A support block (34) is installed on one side of the connecting spring (33). A connecting rod (35) is installed in the middle of one side of the support block (34). A sealing plate (36) is installed on one side of the connecting rod (35).

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