Battery top cover sealing nail pressure resistance test platform and pressure resistance test device

Abstract

The utility model discloses a kind of battery top cover sealing nail pressure resistance test platform and pressure resistance testing device, and it is related to battery top cover pressure resistance test technical field.The test platform includes test substrate, and the top surface of test substrate is equipped with at least two workpiece positions of intersection arrangement, each workpiece position is respectively adapted to different model battery top cover, and the top surface of test substrate is equipped with air hole in the position of the intersection of each workpiece position.It solves the problem that existing test platform can only test single model battery top cover, without frequently changing test platform or being equipped with multiple test devices, meet the test demand of multiple model battery top cover, improve test efficiency, reduce test cost.

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 platform and 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 battery airtightness can lead to electrolyte leakage, which not only seriously affects the battery's safe performance but, in extreme cases, may also cause catastrophic consequences such as explosions and fires, posing a huge 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 directly determines the battery's airtightness. For example... Figure 1 As shown, the sealing nail 020 is welded to the liquid injection hole 011 of the battery top cover 010, and its sealing performance directly affects the overall sealing effect of the battery. However, the existing battery top cover sealing nail pressure resistance testing device has a significant drawback: its testing platform only has a single workpiece position, which means that the testing device can only be adapted to specific models of battery top covers and cannot meet the testing needs of multiple battery top cover models. If enterprises need to test different models of battery top covers, they either have to frequently change the testing platform, resulting in low testing efficiency, or they need to equip themselves with multiple battery top cover sealing nail pressure resistance testing devices, which significantly increases testing costs. Utility Model Content

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

[0005] This utility model discloses a battery top cover sealing nail pressure resistance test platform, including a test base plate. The top surface of the test base plate is provided with at least two workpiece positions, which are arranged intersectingly. The top surface of the test base plate is provided with vent holes at the intersection of the workpiece positions. Each workpiece position is adapted to a different model of battery top cover. The workpiece position is used to support the battery top cover to be tested. The vent holes are arranged opposite to the sealing nail of the battery top cover. The vent holes are used to connect to an air source or to release pressure, so as to perform pressure resistance testing on the sealing nail.

[0006] According to one embodiment of the present invention, the workpiece position adopts a groove provided on the top surface of the test substrate. The width of the groove is equal to the width of the top cover of the corresponding model of battery. The distance from one end of the groove along the length direction to the vent hole is equal to the distance from one end of the top cover of the corresponding model of battery along the length direction to the sealing nail.

[0007] According to one embodiment of the present invention, the other end of the groove extends along the length direction to the side of the test substrate to form an open structure.

[0008] According to one embodiment of the present invention, the distance from one end of the groove to the other end along the length direction is less than the distance from one end of the top cover of the corresponding model to the other end along the length direction.

[0009] According to one embodiment of the present invention, the bottom wall of the groove is provided with clearance grooves at both ends along the length direction of the groove, and the clearance grooves are used to avoid the terminal posts of the battery top cover.

[0010] According to one embodiment of the present invention, an air-avoiding groove provided at the other end along the length direction of the groove extends to the side of the test substrate.

[0011] According to one embodiment of the present invention, it further includes a carrier substrate, the test substrate is disposed on the top surface of the carrier substrate, and a venting groove is provided on the bottom surface of the test substrate. The venting groove communicates with the venting hole and extends to the side of the test substrate. The venting groove and the carrier substrate enclose a venting cavity, which is used to connect to an air source or to release pressure.

[0012] According to one embodiment of the present invention, the bottom wall of the workpiece position is a plane, the bottom wall of the workpiece position is used to support the top surface of the battery top cover to be tested, and the vent hole is used for pressure relief.

[0013] According to one embodiment of the present invention, two workpiece positions are provided on the top surface of the test substrate, and the two workpiece positions are arranged perpendicular to each other.

[0014] This utility model discloses a battery top cover sealing nail pressure resistance test device, which includes the above-mentioned battery top cover sealing nail pressure resistance test platform.

[0015] Compared with the prior art, the battery top cover sealing nail pressure resistance test platform and pressure resistance test device of this utility model have the following advantages: Firstly, the battery top cover sealing nail pressure resistance test platform of this utility model solves the problem that existing test platforms can only test a single type of battery top cover by setting at least two workpiece positions on the top surface of the test substrate, each adapted to different models of battery top covers. These workpiece positions are arranged intersectingly and share a vent at the intersection. This eliminates the need for frequent test platform changes or multiple test devices, thus meeting the testing requirements of various battery top cover models, significantly improving testing efficiency and reducing testing costs. Simultaneously, the design of the two workpiece positions being arranged perpendicularly to each other achieves a reasonable layout within the limited space of the test substrate, improving space utilization.

[0016] Secondly, the test platform ensures that the sealing nails are accurately aligned with the vent after the battery top cover is placed by precisely matching the dimensions such as the groove width and the distance between the groove and the vent hole with the battery top cover, as well as the load-bearing design of the bottom wall of the groove. This improves the accuracy of the test positioning and ensures the reliability of the withstand voltage test.

[0017] The clearance grooves at both ends of the bottom wall of the groove can precisely avoid the terminals of the battery top cover, preventing damage to the terminals during testing and further ensuring the stability of the test and the integrity of the battery top cover.

[0018] Secondly, the open structure at the other end of the groove along its length, the design that the groove length is less than the length of the battery top cover, and the structure that the corresponding clearance groove extends to the side of the test substrate, together enable rapid loading and unloading of the battery top cover. Operators can easily pick up and put down the battery top cover, saving operation time and reducing the risk of damage to the battery top cover due to cumbersome operation.

[0019] In addition, the ventilation groove on the bottom surface of the test substrate and the supporting substrate form a ventilation cavity, which, together with the ventilation holes, enables a stable air source access or pressure relief function.

[0020] In addition, the connection method of the test substrate on the top surface of the support substrate and the design of the ventilation groove extending to the side of the test substrate enable the test platform to be flexibly adapted to different support scenarios such as production equipment workbench or support seat used independently as a test device, which improves the versatility and scalability of the test platform and can better meet diverse production testing needs. Attached Figure Description

[0021] 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 platform in Example 1; Figure 3 This is a bottom structural diagram of the test substrate in Example 1.

[0022] Explanation of reference numerals in the attached figures 010. Battery top cover; 011. Fluid filling hole; 020. Sealing pin; 100 Test substrate; 110 Workpiece position; 111 Groove; 112 Vent hole; 113 Clearance groove; 114 Vent groove; 200 Support substrate. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] Example 1 This embodiment provides a battery top cover sealing nail pressure resistance test platform, see [link / reference] Figure 2 and Figure 3 The battery top cover sealing nail pressure resistance test platform includes a test substrate 100, and a workpiece position 110 is provided on the top surface of the test substrate 100. The workpiece position 110 is used to support the battery top cover to be tested.

[0026] Specifically, the test substrate 100 is horizontally arranged. There are at least two workpiece positions 110, and these positions are arranged intersectingly. Each workpiece position 110 is adapted to a different type of battery top cover to facilitate the positioning of different battery top covers. Furthermore, a vent hole 112 is provided on the top surface of the test substrate 100 at the intersection of the workpiece positions 110. The vent hole 112 is positioned opposite to the sealing pin of the battery top cover.

[0027] The vent 112 is dual-purpose, serving as both an air inlet and a pressure relief port. When used as an air inlet, it connects to a gas source for pressure testing. The gas source introduces gas into the sealing pin of the battery top cover through the vent 112, maintaining a certain pressure. The working pressure curve is monitored using the gas source, and the welding quality of the sealing pin is judged by the trend of the pressure curve. If the pressure curve remains stable, it indicates good welding quality of the sealing pin; if the pressure curve is unstable, it indicates poor welding quality. When used as a pressure relief port, the vent 112 releases pressure during the pressure test. The gas source introduces gas into the end of the sealing pin away from the vent 112, maintaining a certain pressure. If the welding quality of the sealing pin is poor, gas leakage occurs and is discharged through the vent 112. In extreme cases, the sealing pin may burst out under instantaneous high pressure, accompanied by a large amount of gas being discharged through the vent 112. Furthermore, the bottom wall of the workpiece position 110 is flat. When the vent 112 is used as a pressure relief hole, the bottom wall of the workpiece position 110 supports the top surface of the battery cover to be tested. The flat structure ensures that the top surface of the battery cover is in close contact with the bottom wall of the workpiece position 110, guaranteeing that all gas is discharged through the vent 112.

[0028] The intersecting arrangement of the workpiece positions 110 enables testing and adaptation of multiple battery top cover models within a limited space. Furthermore, all workpiece positions 110 share the same vent 112, which not only meets the withstand voltage testing requirements of various battery top cover models and improves the versatility of the testing device, but also simplifies the overall structure and maximizes space utilization. Preferably, the workpiece position 110 is a groove 111 located on the top surface of the test substrate 100. The width of the groove 111 is equal to the width of the corresponding battery top cover model, and the distance from one end of the groove 111 along its length to the vent 112 is equal to the distance from one end of the corresponding battery top cover along its length to the sealing pin. This precise dimensional correspondence ensures stable positioning of the battery top cover.

[0029] To facilitate operation, the other end of the groove 111 extends along the length to the side of the test substrate 100 to form an open structure. This allows operators to easily load and unload the battery top cover, improving testing efficiency. Furthermore, the distance from one end of the groove 111 to the other along the length is less than the distance from one end to the other of the corresponding battery top cover. This design allows the battery top cover to extend beyond the groove 111, further enhancing ease of loading and unloading.

[0030] In addition, clearance grooves 113 are provided at both ends of the bottom wall of the groove 111 along the length of the groove 111. The clearance grooves 113 are used to avoid the terminal posts of the battery top cover. At the same time, the clearance groove 113 provided at the other end of the groove 111 extends to the side of the test substrate 100. This design can better fit the terminal posts of the battery top cover, avoid interference, and also make it easier for the battery top cover to extend further out of the groove 111, further improving the convenience of picking up and putting down.

[0031] In this embodiment, the testing platform further includes a support substrate 200. A test substrate 100 is disposed on the top surface of the support substrate 200. A ventilation groove 114 is provided on the bottom surface of the test substrate 100, communicating with a ventilation hole 112. The ventilation groove 114 extends to the side of the test substrate 100, and the ventilation groove 114 and the support substrate 200 together form a ventilation cavity, which is used for connecting to a gas source or for depressurization. Through the cooperation of the ventilation hole 112 and the ventilation cavity, gas source connection or depressurization operations can be achieved more stably. The support substrate 200 can be a workbench of production equipment or a base plate of an independent testing device, allowing for flexible arrangement according to the usage scenario.

[0032] In this embodiment, two workpiece positions 110 are provided on the top surface of the test substrate 100, and the two workpiece positions 110 are arranged perpendicular to each other.

[0033] Example 2 This embodiment provides a battery top cover sealing nail pressure resistance test device, including the battery top cover sealing nail pressure resistance test platform described in Embodiment 1.

[0034] In summary, this battery top cover sealing pin withstand pressure testing platform features multiple workpiece positions on the test substrate to accommodate different battery top covers. This overcomes the limitation of existing single-station testing platforms that can only accommodate specific battery top cover models. It eliminates the need for frequent platform changes or multiple testing devices, thus meeting the testing requirements of various battery top cover models, significantly improving testing efficiency and reducing costs. The precise alignment of the vent holes with the sealing pins, combined with the venting grooves and the venting cavity formed by the support substrate, serves both as an air inlet for gas introduction during testing and as a pressure relief hole for safety. Simultaneously, the open groove structure, groove length design, and through-hole structure of the clearance groove enable rapid loading and unloading of battery top covers while preventing damage to the terminals. The intersecting and vertical arrangement of the workpiece positions optimizes space utilization, making the overall structure more compact. Furthermore, the flexible connection between the test substrate and the support substrate enhances the platform's adaptability to different production scenarios, further strengthening its practicality.

[0035] 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 nail pressure resistance test platform, characterized in that, The test substrate (100) includes at least two workpiece positions (110) on its top surface. The workpiece positions (110) are arranged in an intersecting manner. Vent holes (112) are provided on the top surface of the test substrate (100) at the intersection of the workpiece positions (110). Each workpiece position (110) is adapted to a different type of battery top cover. The workpiece position (110) is used to support the battery top cover to be tested. The vent hole (112) is used to be positioned opposite to the sealing nail of the battery top cover. The vent hole (112) is used to connect to an air source or depressurize so as to perform a pressure resistance test on the sealing nail.

2. The battery top cover sealing nail pressure resistance test platform according to claim 1, characterized in that, The workpiece position (110) adopts a groove (111) on the top surface of the test substrate (100). The width of the groove (111) is equal to the width of the top cover of the corresponding model of battery. The distance from one end of the groove (111) along the length direction to the vent (112) is equal to the distance from one end of the top cover of the corresponding model of battery along the length direction to the sealing nail.

3. The battery top cover sealing nail pressure resistance test platform according to claim 2, characterized in that, The other end of the groove (111) extends along the length direction to the side of the test substrate (100) to form an open structure.

4. The battery top cover sealing nail pressure resistance test platform according to claim 3, characterized in that, The distance from one end of the groove (111) along the length direction to the other end is less than the distance from one end of the top cover of the corresponding model along the length direction to the other end.

5. The battery top cover sealing nail pressure resistance test platform according to claim 2, characterized in that, On the bottom wall of the groove (111), there are clearance grooves (113) at both ends along the length direction of the groove (111), and the clearance grooves (113) are used to avoid the terminal posts of the battery top cover.

6. The battery top cover sealing nail pressure resistance test platform according to claim 5, characterized in that, An air-proof groove (113) provided at the other end along the length direction of the groove (111) extends to the side of the test substrate (100).

7. The battery top cover sealing nail pressure resistance test platform according to any one of claims 1 to 6, characterized in that, It also includes a carrier substrate (200), the test substrate (100) is disposed on the top surface of the carrier substrate (200), and a ventilation groove (114) is provided on the bottom surface of the test substrate (100). The ventilation groove (114) is connected to the ventilation hole (112). The ventilation groove (114) extends to the side of the test substrate (100). The ventilation groove (114) and the carrier substrate (200) enclose a ventilation cavity, which is used to connect to an air source or to release pressure.

8. The battery top cover sealing nail pressure resistance test platform according to any one of claims 1 to 6, characterized in that, The bottom wall of the workpiece position (110) is a plane, and the bottom wall of the workpiece position (110) is used to support the top surface of the battery top cover to be tested. The vent hole (112) is used for pressure relief.

9. The battery top cover sealing nail pressure resistance test platform according to any one of claims 1 to 6, characterized in that, The test substrate (100) has two workpiece positions (110) on its top surface, and the two workpiece positions (110) are arranged perpendicular to each other.

10. A battery top cover sealing pin pressure resistance testing device, characterized in that, The battery top cover sealing nail pressure resistance test platform includes any one of claims 1 to 9.

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