Battery cover plate explosion-proof piece breathing test structure

Abstract

The utility model relates to the technical fields of battery detection equipment discloses battery cover plate explosion -proof piece breath test structure, is equipped with lower air cavity in the lower seat body, and lower air cavity penetrates the top of lower seat body, forms lower air inlet, the upper seat body that is equipped with relative to the longitudinal movement of lower seat body is established in the upper of lower seat body, and is equipped with upper air cavity in the upper seat body, and upper air cavity penetrates the bottom of upper seat body, forms upper air inlet, the bottom of upper seat body and the top of lower seat body form the test site of placing explosion -proof piece between, when battery cover plate is placed in the test site, the upper seat body and lower seat body are towards the battery cover plate and are held to make battery cover plate fixed arrangement, and upper air inlet is from top to bottom and is aligned explosion -proof piece, and lower air inlet is from bottom to top and is aligned explosion -proof piece, and upper air inlet and lower air inlet form the closed test cavity between, and explosion -proof piece is placed in the test cavity, the test cavity of high sealing property can reduce airflow leakage, and has improved test effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery detection equipment, specifically, relate to battery cover plate anti -explosion piece breath test structure. BACKGROUND

[0002] Battery cover plate breath test refers to: through simulating the cyclic variation of gas pressure of battery in the use process, assesses the fatigue resistance and the sealing property of battery cover plate such as anti -explosion piece, breath valve etc.

[0003] In prior art, anti -explosion piece is fixed by simple clamp, makes it easy to shift or deform in the test, directly damages the repeatability and accuracy of test data; In addition, the airflow path is insufficiently optimized, the upper and lower air inlets are misaligned, and the test cavity has poor sealing, causing the airflow to bypass the anti -explosion piece or generate turbulence, uneven effect, greatly reducing the accuracy of test results. UTILITY MODEL CONTENT

[0004] The utility model discloses battery cover plate anti -explosion piece breath test structure, aims at solving the problem of poor battery cover plate anti -explosion piece breath test effect in prior art.

[0005] The utility model discloses battery cover plate anti -explosion piece breath test structure, aims at solving the problem of poor battery cover plate anti -explosion piece breath test effect in prior art. The bottom of the upper seat and the top of the lower seat form a test site for placing the anti -explosion piece, when the battery cover plate is placed in the test site, the upper seat and the lower seat hold the battery cover plate towards each other, so that the battery cover plate is fixedly arranged, the upper air inlet is aligned with the anti -explosion piece from top to bottom, the lower air inlet is aligned with the anti -explosion piece from bottom to top, a closed test cavity is formed between the upper air inlet and the lower air inlet, and the anti -explosion piece is placed in the test cavity.

[0006] Further, a positioning guide structure is arranged between the upper seat and the lower seat, the positioning guide structure guides the longitudinal movement path of the upper seat relative to the lower seat, and limits the transverse movement of the upper seat relative to the lower seat.

[0007] Further, the positioning and guiding structure comprises guiding columns arranged longitudinally on the lower seat body, and the upper seat body is provided with guiding holes arranged longitudinally, and the guiding columns are arranged in alignment with the guiding holes.

[0008] Further, the lower seat body is provided with two guiding columns, and the two guiding holes are arranged on the two sides of the upper air port respectively; the upper seat body is provided with two guiding holes, and the two guiding columns are arranged on the two sides of the lower air port respectively.

[0009] Further, the upper seat body is provided with an upper air inlet connector connected with and communicating with the upper air cavity, and the upper air inlet connector is arranged on the side of the upper seat body, and the suction air equipment charges or exhausts the air cavity through the upper air inlet connector.

[0010] Further, the bottom of the upper seat body is convex downward to form an upper boss, the upper air cavity extends into the upper boss, and the upper air port is formed on the bottom of the upper boss.

[0011] Further, the bottom of the upper boss is concave upward to form an upper ring groove, the upper ring groove is arranged around the periphery of the upper air port, and the upper ring groove is provided with an upper sealing ring; The upper sealing ring extends out of the bottom of the upper ring groove, and when the upper seat body and the lower seat body clamp the battery cover plate, the upper sealing ring abuts against the battery cover plate and is in elastic compression deformation.

[0012] Further, the top of the lower seat body is concave downward to form a lower ring groove, the lower ring groove is arranged around the periphery of the lower air port, and the lower ring groove is provided with a lower sealing ring; The lower sealing ring extends out of the top of the lower ring groove, and when the upper seat body and the lower seat body clamp the battery cover plate, the lower sealing ring abuts against the battery cover plate and is in elastic compression deformation.

[0013] Further, the upper seat body is connected with a moving plate moving longitudinally, and the upper seat body is connected to the bottom of the moving plate; the moving plate is connected with a driving structure, and the driving structure drives the moving plate to move longitudinally, so that the upper seat body moves longitudinally relative to the lower seat body.

[0014] Further, the upper air cavity penetrates the top of the upper seat body to form a top opening, and the moving plate has a cover plate covering the top opening, so that the top of the upper air cavity is arranged in a closed manner.

[0015] Compared with the prior art, the battery cover plate anti-explosion piece breath test structure provided by the utility model, through the upper and lower seat bodies clamping the battery cover plate towards each other, makes the anti-explosion piece stably fixed on the test position, avoids the anti-explosion piece from being displaced or deformed in the test process, thereby improving the repeatability and accuracy of the test data.

[0016] Moreover, the upper and lower air inlets are aligned to form a closed test cavity, the airflow path is optimized, the airflow can uniformly and stably act on the anti-explosion piece, the test result is not inaccurate due to the airflow bypassing the anti-explosion piece or generating turbulence, and the reliability of the test is improved.

[0017] In addition, the test cavity with high sealing performance can reduce airflow leakage, and further improves the test effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the three-dimensional schematic view of the battery cover plate anti-explosion piece breath test structure provided by the utility model; Figure 2 is the internal schematic view of the battery cover plate anti-explosion piece breath test structure provided by the utility model; Figure 3 is the exploded schematic view of the upper seat body provided by the utility model; Figure 4 is the exploded schematic view of the lower seat body provided by the utility model; In the drawing: lower seat body 100, lower air inlet 103, lower ring groove 104, lower sealing ring 105, test position 106, anti-explosion piece 107; Upper seat body 200, upper air inlet 201, upper air inlet connector 202, upper boss 203, upper ring groove 204, upper sealing ring 205, moving plate 206, top opening 207, cover plate 208; Guide column 300, guide hole 301; Air cylinder 400, driving bottom plate 401, driving shaft 402. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples.

[0020] The implementation of the utility model is described in detail below in combination with specific examples.

[0021] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0022] Reference Figures 1-4 The image shown is a preferred embodiment of the present invention.

[0023] The battery cover explosion-proof sheet breathing test structure includes a lower body 100, in which a lower air chamber is provided, the lower air chamber passing through the top of the lower body 100 to form a lower air port 103; an upper body 200 is provided above the lower body 100, which moves longitudinally relative to the lower body 100, and an upper air chamber is provided in the upper body 200, the upper air chamber passing through the bottom of the upper body 200 to form an upper air port 201; A test position 106 for placing the explosion-proof sheet 107 is formed between the bottom of the upper body 200 and the top of the lower body 100. After the battery cover is placed in the test position 106, the upper body 200 and the lower body 100 clamp the battery cover in opposite directions to fix the battery cover in place. The upper air port 201 is aligned with the explosion-proof sheet 107 from top to bottom, and the lower air port 103 is aligned with the explosion-proof sheet 107 from bottom to top. A closed test chamber is formed between the upper air port 201 and the lower air port 103, and the explosion-proof sheet 107 is placed in the test chamber.

[0024] The battery cover explosion-proof sheet breathing test structure provided above uses upper and lower seats to clamp the battery cover, so that the explosion-proof sheet 107 is stably fixed in the test position 106, avoiding displacement or deformation of the explosion-proof sheet 107 during the test, thereby improving the repeatability and accuracy of the test data.

[0025] Moreover, the alignment of the upper and lower air inlets forms a closed test chamber, which optimizes the airflow path and allows the airflow to act evenly and stably on the explosion-proof sheet 107. This avoids inaccurate test results caused by the airflow bypassing the explosion-proof sheet 107 or generating turbulence, thus improving the reliability of the test.

[0026] In addition, a highly sealed test chamber can reduce airflow leakage, further improving the test results.

[0027] The airflow mentioned in this embodiment plays a crucial role in the breathing test structure of the battery cover explosion-proof plate 107. Specifically, the airflow acts on the breathing test structure, and then simulates the breathing effect of the battery through bidirectional air pressure. Therefore, the airflow inside the breathing test structure must be strictly stable. If the airflow regulation is abnormal, such as valve jamming or hose blockage, it will lead to irregular pressure changes, affecting the reliability of the fatigue test of the explosion-proof plate 107, thus resulting in poor breathing test results.

[0028] In this embodiment, a positioning guide structure is provided between the upper seat 200 and the lower seat 100. The positioning guide structure guides the longitudinal movement of the upper seat 200 relative to the lower seat 100 and restricts the lateral movement of the upper seat 200 relative to the lower seat 100.

[0029] By guiding the upper body 200 to move longitudinally, it is prevented from shifting laterally, thereby ensuring that the explosion-proof sheet 107 is subjected to concentrated and uniform force. For example, when conducting a breathing test on the battery cover explosion-proof sheet 107, under the constraint of the positioning guide structure, the deformation of the explosion-proof sheet 107 caused by the tilting clamping of the upper body 200 can be avoided, making the test data more reliable and improving repeatability.

[0030] In this embodiment, the positioning guide structure includes a guide post 300 disposed in the lower seat 100 and arranged longitudinally, and a guide hole 301 arranged longitudinally in the upper seat 200. The guide post 300 and the guide hole 301 are arranged vertically aligned. When the upper seat 200 and the lower seat 100 clamp the battery cover in opposite directions, the guide post 300 is movably inserted into the guide hole 301.

[0031] During the testing of the explosion-proof disc 107, the cooperation between the guide post 300 and the guide hole 301 ensures that the upper body 200 and the lower body 100 are precisely aligned during each clamping action. The vertical alignment arrangement ensures the coaxiality of the upper air port 201 and the lower air port 103, optimizes the airflow path, and ensures that the airflow is evenly applied to the explosion-proof disc 107, avoiding testing errors. This has improved the stability and consistency of test results in multiple batches of explosion-proof discs 107 with different thicknesses.

[0032] In this embodiment, the lower seat 100 is provided with two guide posts 300 and two guide holes 301 are respectively arranged on both sides of the upper air port 201; the upper seat 200 is provided with two guide holes 301 and two guide posts 300 are respectively arranged on both sides of the lower air port 103.

[0033] This symmetrical layout makes the upper body 200 more evenly and stably stressed when moving longitudinally. The guide posts 300 and guide holes 301 on both sides jointly bear the weight and clamping force of the upper body 200, improving the stability of movement, ensuring that the explosion-proof plate 107 is centered, and improving the reliability and accuracy of testing. In the actual testing of the battery cover explosion-proof sheet 107, whether the explosion-proof sheet 107 is thick or thin, the upper body 200 and the lower body 100 can be tightly fitted to ensure the stability of airflow and prevent additional stress interference to the explosion-proof sheet 107 caused by the instability of the upper body 200, so that the test results are better.

[0034] In this embodiment, the upper seat 200 is provided with an upper air inlet connector 202 that is connected to the suction device and communicates with the upper air chamber. The upper air inlet connector 202 is arranged on the side of the upper seat 200. The suction device inflates or deflates the air chamber through the upper air inlet connector 202.

[0035] The upper air inlet connector 202 arranged on the side provides a convenient and efficient connection method for the suction and extraction equipment, enabling the upper air chamber to be quickly filled and discharged, and the airflow to be switched quickly and accurately. Furthermore, by rapidly inflating and deflating the upper air inlet connector 202 and controlling the flow rate and pressure of the airflow, dynamic evaluation of the breathing performance of the explosion-proof disc 107 can be achieved. For example, when conducting a rapid pressurization test on the explosion-proof disc 107, the upper air inlet connector 202 can work closely with the suction and desiccation equipment to allow the airflow to reach the set pressure in a short time, ensuring that the breathing action of the explosion-proof disc 107 can be accurately captured, thereby improving the test results.

[0036] In this embodiment, the bottom of the upper body 200 protrudes downward to form an upper boss 203, the upper air chamber extends into the upper boss 203, and the upper air port 201 is formed at the bottom of the upper boss 203; the upper boss 203 can reduce the airflow area, so that the airflow is concentrated on the explosion-proof sheet 107, optimize the airflow distribution, and improve the test sensitivity and accuracy.

[0037] When the airflow enters the upper air chamber through the upper air inlet connector 202, it is guided by the upper boss 203 and accurately acts on the breathing part of the explosion-proof plate 107, which enhances the sensitivity and accuracy of the test, not only improving the test response capability, but also ensuring the reliability of the results.

[0038] In this embodiment, the bottom of the upper boss 203 is recessed upward to form an upper annular groove 204. The upper annular groove 204 is arranged around the upper air port 201 in a circumferential manner, and an upper sealing ring 205 is provided in the upper annular groove 204. The upper sealing ring 205 extends out of the bottom of the upper annular groove 204. When the upper seat 200 and the lower seat 100 clamp the battery cover, the upper sealing ring 205 abuts against the battery cover and is in elastic compression deformation.

[0039] In this way, the upper ring groove 204 and the upper sealing ring 205 cooperate to provide a stable sealing force through elastic deformation, preventing air leakage. When facing battery covers of various specifications, the sealing effect of the upper sealing ring 205 prevents air leakage from the gap between the upper seat 200 and the battery cover, ensuring the stability of the air pressure in the test chamber, enhancing adaptability and improving the effect.

[0040] In this embodiment, the top of the lower seat 100 is recessed downward to form a lower annular groove 104. The lower annular groove 104 is arranged around the lower air port 103 in a circumferential manner, and a lower sealing ring 105 is provided in the lower annular groove 104. The lower sealing ring 105 extends out of the top of the lower annular groove 104. When the upper seat 200 and the lower seat 100 clamp the battery cover, the lower sealing ring 105 abuts against the battery cover and is in elastic compression deformation.

[0041] In this way, the lower annular groove 104 and the lower sealing ring 105 work together with the upper annular groove 204 and the upper sealing ring 205 to form a stable sealing interface, completely blocking the airflow leakage path and ensuring stable air pressure in the test chamber. In the breathing performance tests of the explosion-proof disc 107 under different pressure conditions, airflow cannot escape from the gap between the lower seat 100 and the battery cover, thereby improving the accuracy and repeatability of the results.

[0042] In this embodiment, the upper seat 200 is connected to a longitudinally movable plate 206, and the upper seat 200 is connected to the bottom of the movable plate 206; the movable plate 206 is connected to a driving structure, and the driving structure drives the movable plate 206 to move longitudinally, so that the upper seat 200 moves longitudinally relative to the lower seat 100.

[0043] The drive structure mentioned in this embodiment includes a cylinder 400, a drive base plate 401 connected to the bottom of the cylinder, and drive shafts 402 on both sides of the drive base plate 401. One end of the drive shaft 402 is connected to the drive base plate 401, and the other end extends axially upward and is connected to the moving plate 206. The upper seat 200, the lower seat 100 and the cylinder 400 are respectively located in the middle of the two drive shafts 402.

[0044] The drive structure drives the longitudinal movement of the upper body 200, improving the efficiency and stability of clamping and releasing the battery cover. For example, in the automated testing production line of the battery cover explosion-proof sheet 107, the drive structure can quickly respond to testing requirements. Through the stable driving force of the cylinder 400, it drives the moving plate 206 and the upper body 200 to make longitudinal displacement, which not only ensures the alignment accuracy between the upper body 200 and the lower body 100, but also adapts to battery covers of different thicknesses, ensuring that each clamping is tight and close, thereby effectively preventing air leakage and ensuring the stability of the air pressure in the test chamber.

[0045] In addition, the drive shafts 402 on both sides of the drive base plate 401 are connected to the moving plate 206, forming a stable symmetrical structure, which can effectively reduce the shaking and displacement of the upper body 200 during movement, and further improve the accuracy and repeatability of the test.

[0046] The upper seat 200, lower seat 100 and cylinder 400 are located in the middle of the two drive shafts 402, which makes the center of gravity of the whole device more concentrated, enhances the overall stability, and thus improves the effect of the battery cover explosion-proof sheet 107 breathing test.

[0047] In this embodiment, the upper air chamber penetrates the top of the upper seat 200 to form a top opening 207. The movable plate 206 has a cover plate 208, which covers the top opening 207 so that the top of the upper air chamber is closed.

[0048] This prevents airflow from leaking from the top, ensuring that the airflow acts entirely on the explosion-proof plate 107. The optimized closed air path enhances the stability and controllability of the airflow and reduces test errors caused by airflow leakage.

[0049] 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 and improvements 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 battery cover explosion-proof sheet breathing test structure, characterized in that, The device includes a lower seat body, which has a lower air chamber that extends through the top of the lower seat body to form a lower air outlet; an upper seat body that moves longitudinally relative to the lower seat body is located above the lower seat body, which has an upper air chamber that extends through the bottom of the upper seat body to form an upper air outlet. A test position for placing an explosion-proof sheet is formed between the bottom of the upper body and the top of the lower body. When the battery cover is placed in the test position, the upper body and the lower body clamp the battery cover in opposite directions to fix the battery cover in place. The upper air port is aligned with the explosion-proof sheet from top to bottom, and the lower air port is aligned with the explosion-proof sheet from bottom to top. A closed test cavity is formed between the upper air port and the lower air port, and the explosion-proof sheet is placed in the test cavity.

2. The battery cover explosion-proof sheet breathing test structure as described in claim 1, characterized in that, A positioning guide structure is provided between the upper seat and the lower seat. The positioning guide structure guides the longitudinal movement of the upper seat relative to the lower seat and restricts the lateral movement of the upper seat relative to the lower seat.

3. The battery cover explosion-proof sheet breathing test structure as described in claim 2, characterized in that, The positioning and guiding structure includes a guide post disposed in the lower seat and arranged longitudinally, and a guide hole arranged longitudinally in the upper seat. The guide post and the guide hole are arranged vertically aligned. When the upper seat and the lower seat clamp the battery cover in opposite directions, the guide post is movably inserted into the guide hole.

4. The battery cover explosion-proof sheet breathing test structure as described in claim 3, characterized in that, The lower body is provided with two guide posts, and the two guide holes are respectively arranged on both sides of the upper air port; the upper body is provided with two guide holes, and the two guide posts are respectively arranged on both sides of the lower air port.

5. The battery cover explosion-proof sheet breathing test structure as described in claim 4, characterized in that, The upper body is provided with an upper air inlet connector that is connected to the suction and extraction device and communicates with the upper air chamber. The upper air inlet connector is arranged on the side of the upper body, and the suction and extraction device inflates or deflates the air inlet chamber through the upper air inlet connector.

6. The battery cover explosion-proof sheet breathing test structure as described in any one of claims 1-5, characterized in that, The bottom of the upper body protrudes downward to form an upper boss, the upper air chamber extends into the upper boss, and the upper air port is formed at the bottom of the upper boss.

7. The battery cover explosion-proof sheet breathing test structure as described in claim 6, characterized in that, The bottom of the upper boss is recessed upward to form an upper annular groove, which is arranged around the circumference of the upper air port, and an upper sealing ring is provided in the upper annular groove. The upper sealing ring extends out of the bottom of the upper annular groove. When the upper seat and the lower seat clamp the battery cover, the upper sealing ring abuts against the battery cover and is in elastic compression deformation.

8. The battery cover explosion-proof sheet breathing test structure as described in any one of claims 1-5, characterized in that, The top of the lower seat is recessed downward to form a lower annular groove, which is arranged around the lower air port in a circumferential direction, and a lower sealing ring is provided in the lower annular groove; The lower sealing ring extends out of the top of the lower annular groove. When the upper seat and the lower seat clamp the battery cover, the lower sealing ring abuts against the battery cover and is in elastic compression deformation.

9. The battery cover explosion-proof sheet breathing test structure as described in any one of claims 1-5, characterized in that, The upper seat is connected to a longitudinally movable plate, and the upper seat is connected to the bottom of the movable plate; the movable plate is connected to a drive structure, and the drive structure drives the movable plate to move longitudinally, so that the upper seat moves longitudinally relative to the lower seat.

10. The battery cover explosion-proof sheet breathing test structure as described in claim 9, characterized in that, The upper air chamber extends through the top of the upper seat body, forming a top opening. The movable plate has a cover plate that covers the top opening, so that the top of the upper air chamber is closed.

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