A battery top cover sealing pin pressure resistance test device

Abstract

This utility model discloses a battery top cover sealing nail pressure resistance testing device, relating to the field of battery top cover pressure resistance testing technology. It includes a support base and a clamping mechanism. The support base includes a test substrate and a mounting substrate. The workpiece position on the test substrate supports the battery top cover. A clamping drive component on the mounting substrate is connected to a clamping action component. The clamping action component has a through-type pressurization channel, with the air inlet end of the pressurization channel connected to an air source and the air outlet end corresponding to the sealing nail. This device clamps the battery top cover through the clamping mechanism, and the air source can directly apply air pressure to the sealing nail, enabling individual pressure resistance testing of the sealing nail. This solves the problem of not being able to individually evaluate the welding effect of the sealing nail, avoids battery airtightness problems due to poor welding quality of the sealing nail, and improves battery safety.

Description

Technical Field

[0001] This utility model relates to the field of battery top cover pressure resistance testing technology, specifically, to a battery top cover sealing nail pressure resistance testing device. Background Technology

[0002] Against the backdrop of the rapid development of the battery industry, battery production is experiencing explosive growth. However, the battery manufacturing process faces numerous technical challenges, among which abnormal airtightness is a prominent and urgent problem to be solved. Poor airtightness can cause internal electrolyte leakage, which not only seriously affects the battery's safe performance but, in extreme cases, may also lead to catastrophic consequences such as explosions and fires, posing a significant threat to the lives and property of users.

[0003] For prismatic batteries, the welding quality of the sealing pins at the electrolyte filling hole on the battery top cover has a crucial impact on the battery's airtightness. For example... Figure 1 As shown, the sealing pin 020 is welded to the electrolyte injection hole 011 of the battery top cover 010, serving to seal the electrolyte injection hole 011. However, existing technology cannot conduct a pressure resistance test on the sealing pin alone to evaluate the welding effect. This makes it difficult for manufacturers to accurately control the welding quality of the sealing pin and to detect and deal with potential problems in a timely manner. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a battery top cover sealing nail pressure resistance testing device.

[0005] This utility model discloses a battery top cover sealing nail pressure resistance testing device, including a support base and a clamping mechanism. The support base includes a test base plate and a mounting base plate. The mounting base plate is disposed on the test base plate, and a workpiece position is provided on the top surface of the test base plate for supporting the battery top cover to be tested. The clamping mechanism includes a clamping drive and a clamping action. The clamping drive is mounted on the mounting plate. The output end of the clamping drive is connected to one end of the clamping action. The other end of the clamping action faces the workpiece position. The clamping drive is used to drive the clamping action to move toward the workpiece position so that the clamping action presses the battery top cover onto the workpiece position. The clamping component is provided with a pressurizing channel. The air inlet of the pressurizing channel is used to connect to an air source, and the air outlet of the pressurizing channel is arranged on the end of the clamping component facing the workpiece. The air outlet of the pressurizing channel is set opposite to the sealing nail of the battery top cover so as to perform a pressure resistance test on the sealing nail.

[0006] According to one embodiment of the present invention, the pressing mechanism further includes a pressing transmission assembly, which includes a transmission component and a transmission shaft. The transmission component is connected to the output end of the pressing drive component, one end of the transmission shaft is connected to the transmission component, and the other end of the transmission shaft is connected to the pressing action component.

[0007] According to one embodiment of the present invention, the pressing transmission assembly further includes an elastic element, one end of the transmission shaft is slidably connected to the transmission element, the other end of the transmission shaft is fixedly connected to the pressing element, the elastic element is sleeved on the transmission shaft, the first end of the elastic element abuts against the transmission element, and the second end of the elastic element abuts against the pressing element.

[0008] According to one embodiment of the present invention, a limiting part is provided at the end of the transmission shaft away from the pressing member. The limiting part is used to abut against the transmission member so that the pressing drive member drives the pressing member to move away from the workpiece position.

[0009] According to one embodiment of the present invention, the pressing transmission assembly further includes an adjusting member, which is screwed onto one end of the transmission shaft near the pressing member, and the second end of the elastic member abuts against the adjusting member.

[0010] According to one embodiment of the present invention, the transmission component is provided with a limiting groove, which is used to fix the air inlet end of the pressurization channel and the air pipe connected to the air source.

[0011] According to one embodiment of the present invention, a vent hole is provided on the top surface of the test substrate at the workpiece position. The vent hole is arranged opposite to the sealing nail of the battery top cover and is used for pressure relief.

[0012] According to one embodiment of the present invention, a linear guide rail is provided on the mounting base plate, and a slider is slidably mounted on the linear guide rail, with a pressing member connected to the slider.

[0013] According to one embodiment of the present invention, a mounting substrate is disposed on one side of a test substrate. A step is provided on the side of the mounting substrate facing the test substrate, and a first pin hole is provided on the step. The test substrate is embedded in the step. A second pin hole is provided on the side of the test substrate facing the mounting substrate, and a positioning pin is provided in the first pin hole and the second pin hole.

[0014] According to one embodiment of the present invention, a sealing element is provided on the end of the pressing member facing the workpiece position, and the sealing element is arranged around the air outlet end of the pressurizing channel.

[0015] According to one embodiment of the present invention, a sealing groove is provided on one end of the pressing member facing the workpiece position. The sealing groove is arranged around the air outlet end of the pressurizing channel, and the sealing member is disposed in the sealing groove.

[0016] Compared with the prior art, the battery top cover sealing nail pressure resistance testing device of this utility model has the following advantages: Firstly, the battery top cover sealing nail pressure resistance testing device of this utility model uses a pressing drive on the mounting base to drive a pressing action to stably press the battery top cover onto the workpiece position. Simultaneously, the air outlet of the pressurization channel on the pressing action corresponds to the sealing nail, and the vent hole corresponds to the sealing nail. After the air inlet of the pressurization channel is connected to an air source, air pressure can be directly applied to the sealing nail, realizing independent pressure resistance testing of the sealing nail. This effectively solves the problems in the prior art where battery top cover sealing nails cannot be tested for pressure resistance independently and where it is difficult to evaluate the welding effect. It can accurately grasp the welding quality of the sealing nail, avoiding battery airtightness problems caused by poor sealing nail welding from the source, thereby improving battery safety performance.

[0017] Secondly, this utility model uses the structural cooperation of steps and positioning pins to accurately position and fix the test substrate and the mounting substrate, ensuring that the air outlet of the pressurization channel of the pressing component can correspond to the sealing nail of the battery top cover on the workpiece, thus ensuring the reliability of the pressure resistance test. At the same time, the linear guide rail on the mounting substrate restricts the movement direction of the pressing component, further ensuring the pressing stability and sealing, and improving the reliability of the test results.

[0018] Secondly, the sliding connection between the transmission shaft and the transmission component of this utility model, combined with the buffering effect of the elastic component, can avoid damage caused by the rigid contact between the pressing component and the battery top cover; the limiting part can drive the pressing component to reset synchronously when the pressing drive component resets, ensuring smooth operation; the adjusting component can change the pre-pressure by adjusting the compression amount of the elastic component, which can avoid damage to the battery top cover.

[0019] Furthermore, the vent holes on the test substrate of this invention precisely correspond to the sealing nails. During pressure testing, the welding quality of the sealing nails can be judged by the pressure change curve of the gas source, and the pressure can be released in time if the sealing nails leak gas due to poor welding quality. Moreover, since the vent holes are located below the pressurization channel, the sealing nails are prevented from being blown upwards by high-pressure gas, effectively ensuring the personal safety of the operators and improving the safety of the testing process. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the battery top cover in the background technology; Figure 2 This is a schematic diagram of the battery top cover sealing nail pressure resistance test device in the embodiment; Figure 3 for Figure 2Enlarged view of area A in the middle; Figure 4 This is a schematic diagram of the test substrate structure in the embodiment; Figure 5 This is a top view of the battery top cover sealing nail pressure resistance test device in the embodiment; Figure 6 for Figure 5 Structural sectional view of plane P1-P1; Figure 7 for Figure 6 Enlarged view of area B in the middle; Figure 8 for Figure 6 Enlarged view of area C; Figure 9 for Figure 5 Structural cross-sectional view of plane P2-P2; Figure 10 for Figure 9 Enlarged view of area D in the middle.

[0021] Explanation of reference numerals in the attached figures 010. Battery top cover; 011. Fluid filling hole; 020. Sealing pin; 100, Support base; 110, Workpiece position; 111, Vent hole; 112, Clear groove; 120, Support base plate; 130, Test base plate; 131, Second pin hole; 140, Mounting base plate; 141, Step; 142, First pin hole; 143, Positioning pin; 150, Connecting rib; 160, Linear guide rail; 200. Clamping mechanism; 210. Clamping drive component; 211. Mounting component; 220. Clamping action component; 221. Pressurization channel; 2211. Connector; 2212. Sealing groove; 222. Sealing component; 223. Connecting component; 230. Clamping transmission assembly; 231. Transmission component; 2311. Bearing; 2312. Limiting groove; 232. Transmission shaft; 2321. Limiting part; 233. Elastic component; 234. Adjusting component. Detailed Implementation

[0022] The following illustrations disclose several embodiments of the present invention. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the illustrations in a simple schematic manner.

[0023] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] See Figure 2 This embodiment provides a battery top cover sealing pin pressure resistance testing device, including a support base 100 and a clamping mechanism 200. The support base 100 has a workpiece position 110, and the clamping mechanism 200 is disposed on the support base 100, with the clamping end of the clamping mechanism 200 facing the workpiece position 110. The workpiece position 110 is used to support the battery top cover to be tested, and the clamping mechanism 200 is used to clamp the battery top cover onto the workpiece position 110 to perform a pressure resistance test on the sealing pin on the battery top cover.

[0025] See Figure 2 , Figure 3 and Figure 8 The support base 100 includes a support substrate 120, a test substrate 130, and a mounting substrate 140. The test substrate 130 and the mounting substrate 140 are disposed on the support substrate 120. The test substrate 130 is horizontally arranged, and the mounting substrate 140 is vertically arranged on one side of the test substrate 130. The mounting substrate 140 has a step 141 on its side facing the test substrate 130. The end of the test substrate 130 is embedded in the step 141, and the step 141 has a first pin hole 142. The test substrate 130 has a second pin hole 131 on its side facing the mounting substrate 140. A positioning pin 143 passes through the first pin hole 142 and the second pin hole 131, achieving precise positioning of the two. The mounting substrate 140 is reinforced with the test substrate 130 by a connecting rib 150, ensuring the stability of their relative positions during testing, thereby achieving precise positioning of the clamping mechanism 200 and the workpiece position 110.

[0026] See Figure 4The workpiece position 110 is located on the top surface of the test substrate 130 and has a recessed structure. This workpiece position 110 is adapted to fit the battery top cover for easy positioning. For ease of operation, one end of the workpiece position 110 is connected to one side of the test substrate 130, forming an open structure. This allows operators to quickly load and unload the battery top cover, improving testing efficiency.

[0027] See Figure 2 , Figure 6 and Figure 7 The clamping mechanism 200 includes a clamping drive 210 and a clamping actuating member 220. The clamping drive 210 is mounted on the side of the mounting base 140 facing the test base 130 via a mounting member 211. The output end of the clamping drive 210 is connected to one end of the clamping actuating member 220, and the other end of the clamping actuating member 220 faces the workpiece position 110. In specific applications, the clamping drive 210 drives the clamping actuating member 220 to move in a predetermined direction, so that the clamping actuating member 220 moves closer to or further away from the workpiece position 110, thereby completing the clamping operation on the battery top cover.

[0028] On the one hand, the clamping drive component 210 is selected from quick clamps or power cylinders, whose main function is to provide constant pressure to the clamping actuating component 220, thereby ensuring that the clamping actuating component 220 can be clamped onto the battery top cover. Taking this embodiment as an example, the clamping drive component 210 adopts quick clamps, which have the advantages of low cost, simple operation, and high flexibility, and are especially suitable for test scenarios that require frequent start and stop.

[0029] On the other hand, the clamping member 220 is provided with a pressurizing channel 221. The air inlet end of the pressurizing channel 221 is arranged on the end of the clamping member 220 away from the workpiece position 110, and the air outlet end of the pressurizing channel 221 is arranged on the end of the clamping member 220 facing the workpiece position 110. The air outlet end of the pressurizing channel 221 is arranged opposite to the sealing pin of the battery top cover. A connector 2211 is provided on the air inlet end of the pressurizing channel 221 for connecting to a gas source. A sealing member 222 is provided on the end of the clamping member 220 near the workpiece position 110. The sealing member 222 is arranged around the air outlet end of the pressurizing channel 221. During the clamping process, the sealing member 222 forms a sealing area near the sealing pin of the battery top cover, effectively preventing gas leakage, thereby ensuring the accuracy and reliability of the withstand pressure test.

[0030] A vent hole 111 is provided on the top surface of the test substrate 130 at the workpiece position 110. The vent hole 111 corresponds to the position of the sealing pin on the battery top cover and can play a pressure relief role during the withstand voltage test. Furthermore, since the vent hole 111 is located below the pressurization channel 221, it can prevent the sealing pin with poor welding quality from exploding upwards under instantaneous high pressure, thereby ensuring the personal safety of the operators. At the same time, the workpiece position 110 is also provided with several clearance grooves 112, which are used to avoid the terminals on the battery top cover, preventing damage to the terminals on the battery top cover during the withstand voltage test.

[0031] In this embodiment, the number of workpiece positions 110 is at least two. These workpiece positions 110 are adapted to different models of battery top covers, and the workpiece positions 110 are arranged intersectingly, with all workpiece positions 110 sharing the same vent 111. This not only meets the withstand voltage test requirements of various battery top cover models and improves the versatility of the testing device, but also simplifies the overall structure and achieves full utilization of space.

[0032] Taking this embodiment as an example, there are two workpiece positions 110. These two workpiece positions 110 are arranged perpendicular to each other, and the two workpiece positions 110 share the same vent 111.

[0033] In this embodiment, to ensure the movement accuracy of the clamping member 220, a linear guide rail 160 is provided on the side of the mounting base 140 facing the test base plate 130. A slider is slidably mounted on the linear guide rail 160. The clamping member 220 is connected to the slider of the linear guide rail 160 through a connector 223, so that the clamping member 220 moves stably in a predetermined movement direction. In addition, to facilitate the installation of the seal 222, a sealing groove 2212 is provided on the end of the clamping member 220 facing the workpiece position 110. The sealing groove 2212 is arranged around the air outlet end of the pressurization channel 221. The seal 222 is disposed in the sealing groove 2212, which can effectively prevent the seal 222 from shifting or falling off during pressurization. Furthermore, the seal 222 adopts an O-ring seal.

[0034] Furthermore, to improve the stability of the supply pressure of the clamping drive 210, the clamping mechanism 200 also includes a clamping transmission assembly 230. The input end of the clamping transmission assembly 230 is connected to the output end of the clamping drive 210, and the output end of the clamping transmission assembly 230 is connected to one end of the clamping actuating member 220. In practical applications, the clamping drive 210 drives the clamping transmission assembly 230 to move the clamping actuating member 220, thereby achieving stable pressure output through the clamping transmission assembly 230.

[0035] Review Figure 2 , Figure 6 , Figure 9 and Figure 10 The pressing transmission assembly 230 includes a transmission component 231 and a transmission shaft 232. The transmission component 231 is connected to the output end of the pressing drive component 210. One end of the transmission shaft 232 is connected to the transmission component 231, and the other end of the transmission shaft 232 is connected to the pressing actuating component 220. In specific applications, the pressing drive component 210 drives the pressing transmission assembly 230 to move the pressing actuating component 220, thereby achieving stable pressure output.

[0036] Furthermore, the pressing transmission assembly 230 also includes an elastic element 233. One end of the transmission shaft 232 is slidably connected to the transmission member 231, and the other end of the transmission shaft 232 is fixedly connected to the pressing actuating member 220. The elastic element 233 is sleeved on the transmission shaft 232, with its first end abutting against the transmission member 231 and its second end abutting against the pressing actuating member 220. The elastic deformation of the elastic element 233 helps to stabilize and buffer the pressure, preventing damage to the battery top cover due to rigid contact.

[0037] Furthermore, the transmission component 231 is provided with a bearing 2311, one end of the transmission shaft 232 is slidably connected to the bearing 2311, and the other end of the transmission shaft 232 is fixedly connected to the clamping actuating component 220. A limiting part 2321 is provided at the end of the transmission shaft 232 away from the clamping actuating component 220. The diameter of the limiting part 2321 is larger than the diameter of the bearing 2311 on the transmission component 231, so as to prevent the transmission shaft 232 from dislodging from the bearing 2311. At the same time, when the clamping driving component 210 drives the clamping actuating component 220 to move away from the workpiece position 110, the limiting part 2321 abuts against the transmission component 231, causing the transmission shaft 232 and the clamping actuating component 220 to reset synchronously.

[0038] Preferably, the transmission component 231 is provided with a limiting groove 2312, which is used to fix the air pipe connecting the connector 2211 to the air source. In addition, there are at least two transmission shafts 232, and the transmission shafts 232 are symmetrically arranged to ensure that the pressure transmission assembly 230 transmits pressure evenly to the pressure action member 220. Taking this embodiment as an example, there are two transmission shafts 232; correspondingly, the transmission component 231 is provided with two symmetrical bearings 2311, and each transmission shaft 232 is slidably connected to one bearing 2311, and each transmission shaft 232 is fitted with an elastic element 233. In this embodiment, the bearings 2311 are oil-free bushings, and the elastic element 233 is a spring.

[0039] To adjust the preload, the clamping transmission assembly 230 also includes an adjusting member 234. This adjusting member 234 is used to adjust the compression of the elastic member 233, thereby adjusting the preload of the clamping transmission assembly 230. Specifically, each transmission shaft 232 is equipped with an adjusting member 234, which is screwed onto one end of the transmission shaft 232 near the clamping member 220, causing the second end of the elastic member 233 to abut against the adjusting member 234. When the preload needs adjustment, the axial position of the adjusting member 234 is changed by rotating it, thus changing the compression of the elastic member 233 and consequently the preload of the clamping transmission assembly 230. In this embodiment, the adjusting member 234 is a nut.

[0040] The operation process of this battery top cover sealing nail pressure resistance test device mainly includes four stages: material loading and positioning, pressing and sealing, pressure resistance test, and pressure release and unloading. The specific operation steps are as follows: First, the operator places the top cover of the battery to be tested in the appropriate workpiece position 110, at which point the sealing pin is opposite to the vent hole 111.

[0041] Next, the operator operates the clamping drive 210 to drive the transmission 231 to move towards the workpiece position 110. At this time, the transmission 231 begins to compress the elastic element 233. When the elastic element 233 is compressed to a certain extent, the clamping action 220 is driven to move towards the workpiece position 110. The clamping action 220 begins to contact the battery top cover until the action of the clamping drive 210 is completed. At this time, the transmission 231 and the clamping action 220 also stop moving. The clamping action 220 remains pressed tightly on the battery top cover, so that the sealing element 222 is in sealed contact with the battery top cover, preparing for the subsequent pressure resistance test.

[0042] Next, connector 2211 is connected to a gas source. The gas source supplies gas to the sealing pin of the battery top cover through pressurization channel 221 and maintains a certain pressure. At this time, the working pressure curve is monitored by the gas source. The welding quality of the sealing pin is judged by the trend of the pressure curve. If the pressure curve remains stable, it indicates that the welding quality of the sealing pin of the battery top cover is good. If the pressure curve is unstable, it indicates that the welding quality of the sealing pin of the battery top cover is poor, and there is gas leakage, which is discharged through vent hole 111. In extreme cases, the sealing pin may burst out under instantaneous high pressure, accompanied by a large amount of gas being discharged through vent hole 111. And because vent hole 111 is located below pressurization channel 221, it can prevent the sealing pin from bursting upwards under instantaneous high pressure.

[0043] Finally, the air source stops maintaining pressure and releases pressure. The operator operates the clamping drive 210 to reset the clamping drive 210, which in turn drives the transmission shaft 232 and the clamping action 220 to reset. The operator then removes the battery top cover from the workpiece position 110 to prepare for the pressure resistance test of the sealing nail of the next battery top cover.

[0044] In summary, this utility model's battery top cover sealing nail pressure resistance testing device, through the precise matching of the mounting base and the testing base, combined with the stable clamping mechanism, directly applies air pressure to the sealing nail using an air source, accurately judging its welding quality and reducing potential battery airtightness hazards caused by sealing nail quality issues from the source. The positioning structure of the step and positioning pin, as well as the guiding function of the linear guide rail, ensure the stability of the testing process and the reliability of the test results. The buffering of the elastic element in the clamping transmission assembly, the reset of the limiting part, and the pressure adjustment function of the adjusting element protect the battery top cover from damage. The pressure relief design of the vent hole provides strong protection for testing safety. At the same time, the design of multiple workpiece positions sharing a vent hole improves testing efficiency and reduces the cost of testing equipment. The overall structure takes into account testing accuracy, operational safety, and usage flexibility, providing an efficient and reliable solution for the quality inspection of battery top cover sealing nails.

[0045] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A battery top cover sealing pin pressure resistance testing device, characterized in that, The device includes a support base (100) and a clamping mechanism (200). The support base (100) includes a test substrate (130) and a mounting substrate (140). The mounting substrate (140) is disposed on the test substrate (130). The top surface of the test substrate (130) is provided with a workpiece position (110), which is used to support the top cover of the battery to be tested. The clamping mechanism (200) includes a clamping drive (210) and a clamping action (220). The clamping drive (210) is disposed on the mounting base plate (140). The output end of the clamping drive (210) is connected to one end of the clamping action (220). The other end of the clamping action (220) faces the workpiece position (110). The clamping drive (210) is used to drive the clamping action (220) to move toward the workpiece position (110) so that the clamping action (220) presses the battery top cover onto the workpiece position (110). The pressing member (220) is provided with a pressurizing channel (221). The air inlet of the pressurizing channel (221) is used to connect to an air source. The air outlet of the pressurizing channel (221) is arranged on one end of the pressing member (220) facing the workpiece position (110). The air outlet of the pressurizing channel (221) is set opposite to the sealing nail of the battery top cover so as to perform a pressure resistance test on the sealing nail.

2. The battery top cover sealing nail pressure resistance testing device according to claim 1, characterized in that, The clamping mechanism (200) further includes a clamping transmission assembly (230), which includes a transmission component (231) and a transmission shaft (232). The transmission component (231) is connected to the output end of the clamping drive component (210), one end of the transmission shaft (232) is connected to the transmission component (231), and the other end of the transmission shaft (232) is connected to the clamping action component (220).

3. The battery top cover sealing nail pressure resistance testing device according to claim 2, characterized in that, The pressing transmission assembly (230) further includes an elastic element (233). One end of the transmission shaft (232) is slidably connected to the transmission element (231), and the other end of the transmission shaft (232) is fixedly connected to the pressing actuating element (220). The elastic element (233) is sleeved on the transmission shaft (232). The first end of the elastic element (233) abuts against the transmission element (231), and the second end of the elastic element (233) abuts against the pressing actuating element (220).

4. The battery top cover sealing nail pressure resistance testing device according to claim 3, characterized in that, The drive shaft (232) has a limiting part (2321) at one end away from the clamping member (220). The limiting part (2321) is used to abut against the drive member (231) so that the clamping drive member (210) drives the clamping member (220) to move away from the workpiece position (110).

5. The battery top cover sealing nail pressure resistance testing device according to claim 3, characterized in that, The pressing transmission assembly (230) further includes an adjusting member (234), which is screwed to one end of the transmission shaft (232) near the pressing member (220), and the second end of the elastic member (233) abuts against the adjusting member (234).

6. The battery top cover sealing nail pressure resistance testing device according to claim 2, characterized in that, The transmission component (231) is provided with a limiting groove (2312), which is used to fix the air inlet end of the pressurization channel (221) to the air pipe connected to the air source.

7. The battery top cover sealing pin pressure resistance testing device according to any one of claims 1-6, characterized in that, The test substrate (130) has a vent hole (111) on its top surface at the workpiece position (110). The vent hole (111) is arranged opposite to the sealing nail of the battery top cover and is used for pressure relief.

8. The battery top cover sealing pin pressure resistance testing device according to any one of claims 1-6, characterized in that, The mounting base plate (140) is provided with a linear guide rail (160), and a slider is slidably mounted on the linear guide rail (160). The clamping member (220) is connected to the slider.

9. The battery top cover sealing pin pressure resistance testing device according to any one of claims 1-6, characterized in that, The mounting substrate (140) is disposed on one side of the test substrate (130). The mounting substrate (140) has a step (141) on the side facing the test substrate (130). The step (141) has a first pin hole (142). The test substrate (130) is embedded in the step (141). The test substrate (130) has a second pin hole (131) on the side facing the mounting substrate (140). The first pin hole (142) and the second pin hole (131) have positioning pins (143).

10. The battery top cover sealing pin pressure resistance testing device according to any one of claims 1-6, characterized in that, The pressing member (220) has a sealing member (222) on one end facing the workpiece position (110), and the sealing member (222) is arranged around the air outlet end of the pressurizing channel (221).

11. The battery top cover sealing pin pressure resistance testing device according to claim 10, characterized in that, The pressing member (220) has a sealing groove (2212) on one end facing the workpiece position (110). The sealing groove (2212) is arranged around the air outlet end of the pressurization channel (221), and the sealing member (222) is located in the sealing groove (2212).

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