Tool clamp for aging test of sealing ring

Abstract

The utility model relates to a work fixture used for sealing ring aging test, the work fixture comprises a positioning structure and test connecting holes, a positioning chamber used for positioning a sealing ring in the horizontal direction and the vertical direction is formed in the positioning structure, the test connecting holes are arranged at two ends of the positioning chamber, and the test connecting holes are arranged in the positioning chamber. And a test channel is formed by surrounding the sealing ring. By connecting liquid and air pressure in actual working conditions into the test connecting hole, complex working conditions faced by the sealing ring in actual use can be more comprehensively simulated, so that the accuracy of aging test data of the sealing ring is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a tooling fixture for aging testing of sealing rings. Background Technology

[0002] With China's increased support for the new energy industry, the energy storage sector, especially lithium-ion battery technology, has developed rapidly. In lithium-ion battery design, the sealing ring, as a crucial component of the top cover structure, primarily functions to prevent the exchange of substances between the battery's internal structure and the external environment, ensuring the battery's safety and stability. However, as an elastic material, the sealing ring is susceptible to aging due to environmental factors, directly impacting the battery's sealing performance and lifespan.

[0003] In practical applications, the aging of sealing rings is not only affected by high temperatures, but also by factors such as oil, corrosive liquids, and pressure. Traditional sealing ring aging tests mainly assess the aging condition of the sealing rings through compression set, a method that requires specific fixtures to compress the sealing rings to a certain state and conduct aging tests at high temperatures. However, this method cannot fully simulate the complex working conditions faced by sealing rings in actual use, resulting in limited accuracy of the evaluation results. Utility Model Content

[0004] In view of this, in order to solve the problems mentioned in the background art, a tooling fixture for aging testing of sealing rings is proposed.

[0005] The objective of this utility model can be achieved through the following technical solution: This utility model provides a tooling fixture for aging testing of sealing rings. The tooling fixture includes a positioning structure and a test connection hole. The positioning structure has a positioning chamber inside for positioning the sealing ring in the horizontal and vertical directions. The test connection hole is located at both ends of the positioning chamber to form a test channel around the sealing ring.

[0006] Preferably, the positioning structure includes a vertical positioning component and a horizontal positioning component.

[0007] Preferably, the vertical positioning component includes two clamps and a connector, which move closer together in a mutually approaching direction and are kept fixed by the horizontal positioning component and the connector.

[0008] Preferably, the horizontal positioning component includes multiple positioning rings located between two clamping plates, and the multiple positioning rings surround to form a limiting chamber, which is used to accommodate a sealing ring so that the sealing ring can fit tightly against the outer wall of the positioning ring.

[0009] Preferably, the test connection hole is located on the two clamps and is in communication with the limiting chamber.

[0010] Preferably, the connector includes a positioning screw and a locking nut that match the number of positioning rings.

[0011] Preferably, one end of the positioning screw passes through the two clamping plates and the positioning ring, and the other end is threadedly connected to the locking nut, and the locking nut can be rotated to be in close contact with one of the clamping plates.

[0012] Preferably, the thickness of the positioning ring is less than or equal to the thickness of the sealing ring.

[0013] Preferably, the diameter of the test connection hole is smaller than the inner diameter of the sealing ring.

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

[0015] This invention provides a fixture for aging testing of sealing rings. The positioning structure has internal positioning chambers for horizontal and vertical positioning of the sealing ring. Test connection holes are located at both ends of the positioning chambers to form a test channel around the sealing ring. During aging testing, the user can connect liquid or gas pressure from actual operating conditions to the test connection holes, thereby simulating the aging process of the sealing ring under different actual operating conditions inside the sealing ring, thus improving the accuracy of the aging test data.

[0016] Furthermore, the thickness of the locating ring is less than or equal to the thickness of the sealing ring. By changing the thickness of the locating ring, the change in the sealing ring compression rate during the actual accelerated lifespan of the sealing ring can be simulated. Therefore, the sealing ring's lifespan can be more accurately predicted using the sealing ring's compression rate, thereby improving the accuracy of the sealing ring aging test data. Attached Figure Description

[0017] Figure 1 This is an exploded view of a tooling fixture used for aging testing of sealing rings in one embodiment of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the sealing ring and the lower clamping plate in one embodiment of the present invention;

[0019] Figure 3 This is a top view of the sealing ring and the lower clamping plate in one embodiment of the present invention;

[0020] Figure 4 This is a top view of the sealing ring in one embodiment of the present invention;

[0021] Figure 5 This is a side view of the sealing ring in one embodiment of the present invention;

[0022] Figure 6This is a top view of the upper or lower clamping plate in one embodiment of the present invention;

[0023] Figure 7 This is a side view of the upper or lower clamping plate in one embodiment of the present invention;

[0024] Figure 8 This is a top view of the positioning ring in one embodiment of the present invention;

[0025] Figure 9 This is a side view of the positioning ring in one embodiment of the present invention.

[0026] Among them, 1. Positioning structure; 111. Upper clamping plate; 112. Lower clamping plate; 1111. Screw through hole; 113. Connecting piece; 1131. Positioning screw; 1132. Locking nut; 121. Positioning ring; 2. Test connection hole; 3. Sealing ring. Detailed Implementation

[0027] The following is a more detailed description of a tooling fixture for aging testing of sealing rings according to the present invention, with reference to the schematic diagrams, which illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the present invention.

[0028] For clarity, not all features of the actual embodiments are described. In the following description, well-known functions and structures are not detailed in detail, as they would confuse the present invention with unnecessary detail. It should be understood that in the development of any actual embodiment, numerous implementation details must be made to achieve the developer's specific goals, such as changes from one embodiment to another according to limitations related to the system or business. Furthermore, it should be understood that such development work may be complex and time-consuming, but is merely routine work for those skilled in the art.

[0029] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0030] Please see Figure 1-3 This embodiment provides a tooling fixture for aging testing of sealing rings, the tooling fixture including a positioning structure and a test connection hole 2.

[0031] Specifically, the positioning structure has a positioning chamber inside for positioning the sealing ring 3 in the horizontal and vertical directions, and the test connection hole is located at both ends of the positioning chamber to form a test channel around the sealing ring 3.

[0032] Furthermore, the positioning structure includes a vertical positioning component and a horizontal positioning component. During the testing of the sealing ring, the vertical positioning component is used to fix the sealing ring 3 in the vertical direction, and the horizontal positioning component is used to fix the sealing ring 3 in the horizontal direction.

[0033] Furthermore, the vertical positioning component includes two clamping plates and a connector 113. The connector 113 connects the two clamping plates, and under the action of the connector 113, the two clamping plates can move in a direction that brings them closer to each other.

[0034] Specifically, the two clamping plates are an upper clamping plate 111 and a lower clamping plate 112. The upper clamping plate 111 and the lower clamping plate 112 are connected by a connector 113, and under the action of the connector 113, they can move in the direction of mutual approach, so that the sealing ring 3 is kept fixed in the vertical direction.

[0035] Furthermore, the horizontal positioning component includes multiple positioning rings 121, which are located between two clamping plates and form a limiting chamber around each other. The limiting chamber is used to accommodate the sealing ring 3, so that the sealing ring 3 can be tightly attached to the outer wall of the positioning ring 121.

[0036] Specifically, there are multiple positioning rings 121, and four positioning rings 121 are schematically shown in the figure. All four positioning rings 121 are located between the upper clamping plate 111 and the lower clamping plate 112, and the four positioning rings 121 surround to form a limiting chamber. The limiting chamber is used to limit the position of the sealing ring 3, so that the sealing ring 3 remains fixed in the horizontal direction.

[0037] In addition, the test connection hole 2 is located on the two clamping plates and communicates with the limiting chamber. The purpose of setting the test connection hole 2 is to allow liquid or gas pressure under actual working conditions to be introduced into the sealing ring 3 through the test connection hole 2, thereby simulating the aging condition of the sealing ring 3 under different actual working conditions.

[0038] In this embodiment, the diameter of the test connection hole 2 is smaller than the inner diameter of the sealing ring 3. For example... Figure 4-6As shown, the inner diameter of the sealing ring 3 is D1, and the outer diameter is D2. The diameter of the test connection hole 2 is D3. The dimensional relationship between the sealing ring 3 and the test connection hole 2 needs to satisfy D3 < D1. This dimensional relationship is set to ensure that when the sealing ring 3 undergoes an aging test, substances simulating the actual working conditions can be added from the test connection hole 2 into the interior of the sealing ring 3, thereby achieving the purpose of simulating the actual working conditions inside the sealing ring 3.

[0039] Furthermore, the connecting member 113 includes positioning screws 1131 that match the number of the positioning rings 121 and locking nuts 1132. One end of the positioning screw 1131 passes through the two clamping plates and the positioning ring 121, and the other end is threadedly connected to the locking nut 1132, and the locking nut 1132 can be rotated to be in close contact with one of the clamping plates.

[0040] Specifically, before the test starts, the sealing ring 3 is placed in the limiting chamber formed by surrounding multiple positioning rings 121. One end of the positioning screw 1131 sequentially passes through the upper clamping plate 111, the positioning ring 121, and the lower clamping plate 112, and then the locking nut 1132 at the other end is rotated until the locking nut 1132 is in close contact with one of the clamping plates, further fixing the sealing ring 3 in the vertical and horizontal directions to prevent the sealing ring 3 from moving during the test.

[0041] It should be noted that as Figure 1 and Figure 6 shown, since the general sealing ring 3 has a regular polygon or circular structure, the shapes of the two clamping plates can be set as regular polygons or circles or rectangles. In this embodiment, the two clamping plates are of equal size and are both squares. Denote the length and width of the two clamping plates as W2, then W1 = W2. Screw holes 1111 for the positioning screws to pass through are provided on both the upper clamping plate 201 and the lower clamping plate 202. Denote the diameter of the screw holes 1111 as D4. During the test, in order to prevent interference between the sealing ring 3 and the positioning screw 1131, the dimensional relationship between the two clamping plates, the sealing ring 3, and the screw holes 1111 is: W1 = W2 ≥ (D2 + 4×D)4.

[0042] In addition, as Figure 6 ​​​It should be noted that the positioning ring 121 is made of metal. Because the metal positioning ring 121 has good hardness and wear resistance, it can effectively ensure the compressibility of the sealing ring 3.

[0044] In this embodiment, as Figure 1 and Figure 8 As shown, the positioning ring 121 has an inner diameter and an outer diameter. The inner diameter of the positioning ring 121 is D5, and the outer diameter is D6. Since the positioning ring 121 also controls the compression of the sealing ring 35, it should not be designed to be too wide. Therefore, the difference between D6 and D5 should be between 1cm and 2cm. Furthermore, to allow the positioning screw 1131 to pass through the positioning ring 121, the relationship between the inner diameter D5 of the positioning ring 121 and the diameter D4 of the screw through hole 1111 is: D5 = D4.

[0045] Furthermore, the thickness of the positioning ring 121 is less than or equal to the thickness of the sealing ring 3. For example... Figure 1 , Figure 5 and Figure 9 As shown, the thickness of the sealing ring 3 is denoted as H1, and the thickness of the positioning ring 121 is denoted as H3. The thickness H3 of the positioning ring 121 must be less than or equal to the thickness H1 of the sealing ring 3. During the test, by changing the thickness of the positioning ring 121, the accelerated lifespan of the sealing ring 3 under actual conditions can be simulated, especially the aging of the sealing ring 3 under different compression levels. Furthermore, the compression ratio of the sealing ring 3 can be calculated based on the thickness of the positioning ring 121. Based on the compression ratio of the sealing ring 3, the aging condition of the sealing ring 3 can be calculated, thereby more accurately predicting the service life of the sealing ring 3 and improving the accuracy of the aging test data.

[0046] Specifically, the method of using the tooling fixture is as follows:

[0047] Before testing, the sealing ring 3 is placed between the upper clamping plate 111 and the lower clamping plate 112, and is located in the limiting cavity formed by multiple positioning rings 121. The positioning screw 1131 passes through the upper clamping plate 111, the positioning ring 121 and the lower clamping plate 112 in sequence, and then is threadedly connected to the locking nut 1132. The distance between the upper clamping plate 111 and the lower clamping plate 112 is adjusted by rotating the locking nut 1132, so that the locking nut 1132 is close to one of the clamping plates.

[0048] During testing, liquids and air pressures from actual operating conditions are introduced into the sealing ring 3 through the test connection hole 2 to simulate the actual working conditions inside the sealing ring 3, and the sealing ring 3 is subjected to high-temperature aging to accelerate its lifespan. Then, by replacing the positioning ring 121 with one of different thicknesses, the compression rate change of the actual sealing ring 3 during the lifespan acceleration process is simulated. Afterwards, an airtightness detection device is connected into the sealed ring 3 after the aforementioned lifespan acceleration through the test connection hole 2 to check and determine the leakage status of the sealing ring 3.

[0049] In summary, this utility model provides a fixture for aging testing of sealing rings. The positioning structure has internal positioning chambers for positioning the sealing ring horizontally and vertically. The test connection holes are located at both ends of the positioning chambers to form a test channel around the sealing ring. During the aging test of the sealing ring, the user can connect liquid or gas pressure from actual working conditions to the test connection holes, thereby simulating the aging process of the sealing ring under different actual working conditions inside the sealing ring, thus improving the accuracy of the sealing ring aging test data.

[0050] Furthermore, the thickness of the locating ring is less than or equal to the thickness of the sealing ring. By changing the thickness of the locating ring, the change in the sealing ring compression rate during the actual accelerated lifespan of the sealing ring can be simulated. Therefore, the sealing ring's lifespan can be more accurately predicted using the sealing ring's compression rate, thereby improving the accuracy of the sealing ring aging test data.

[0051] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A tooling fixture for aging testing of sealing rings, characterized in that, The tooling fixture includes a positioning structure and test connection holes. The positioning structure has a positioning chamber inside for positioning the sealing ring in the horizontal and vertical directions. The test connection holes are located at both ends of the positioning chamber to form a test channel around the sealing ring.

2. The tooling fixture for aging testing of sealing rings according to claim 1, characterized in that, The positioning structure includes a vertical positioning component and a horizontal positioning component.

3. The tooling fixture for sealing ring aging test according to claim 2, characterized in that, The vertical positioning component includes two clamping plates and a connector; the connector connects the two clamping plates and allows the two clamping plates to move in a direction that brings them closer to each other.

4. The tooling fixture for sealing ring aging test according to claim 3, characterized in that, The horizontal positioning component includes multiple positioning rings located between two clamping plates, and the multiple positioning rings surround to form a limiting chamber. The limiting chamber is used to accommodate a sealing ring, so that the sealing ring can fit tightly against the outer wall of the positioning ring.

5. The tooling fixture for aging testing of sealing rings according to claim 4, characterized in that, The test connection hole is located on the two clamps and is connected to the limiting chamber.

6. The tooling fixture for sealing ring aging test according to claim 4, characterized in that, The connector includes a positioning screw that matches the number of positioning rings and a locking nut.

7. The tooling fixture for sealing ring aging test according to claim 6, characterized in that, One end of the positioning screw passes through the two clamping plates and the positioning ring, and the other end is threadedly connected to the locking nut, which can be rotated to fit tightly against one of the clamping plates.

8. The tooling fixture for aging testing of sealing rings according to claim 7, characterized in that, The thickness of the positioning ring is less than or equal to the thickness of the sealing ring.

9. The tooling fixture for aging testing of sealing rings as described in claim 1, characterized in that, The diameter of the test connection hole is smaller than the inner diameter of the sealing ring.

Images