New energy vehicle-mounted battery pack box cover leak detection clamp

Abstract

The utility model relates to a new energy vehicle-mounted battery package box cover leak detection clamp, including frame, the platform on the frame upper end sets up the sealing station, the air inlet hole is set up in the middle part of sealing station, four groups of corner air cylinders, four groups of corner air cylinders distribute in sealing station four around and fix on the platform, the hole plugging subassembly, the hole plugging subassembly is suitable for inserting the air hole of box cover, a pair of guide rail beams, two guide rail beams are located sealing station both sides, the pressing plate subassembly, the pressing plate subassembly both sides are provided lifting subassembly respectively, the lifting subassembly lower extreme with guide rail beam passes through guide rail pair and forms the sliding fit, the lifting subassembly does the sliding on guide rail beam through guide rail pair, thereby drives the pressing plate subassembly and removes to sealing station top, the lifting subassembly drives the pressing plate subassembly and does the lifting movement on sealing station top. Through the pressing plate subassembly can to the box cover of quick stable removal to sealing station top and sealing station can carry out the pressure hold, make it can stably carry out leak detection detection.

Description

Technical Field

[0001] This utility model relates to the field of tooling fixtures, specifically to a leak detection fixture for the cover of a new energy vehicle battery pack. Background Technology

[0002] The battery box cover is used to seal the battery pack, preventing damage from external environments such as water, dust, and chemical corrosion, and ensuring the safe operation of the cells and circuits. The battery box cover is made of aluminum alloy. In order to ensure the safety, reliability and long life of the battery system, the manufactured battery pack needs to undergo airtightness testing.

[0003] Currently, the airtightness test of battery box covers mainly involves first sealing the cover, then inflating it to a predetermined pressure, and finally using a leak detector to check the airtightness. Since battery box covers are often quite large, measuring 1064mm*622mm*212mm with a wall thickness of 1mm, and the test pressure is 5.5Kpa, a sealing mechanism needs to be installed on the fixture to prevent the cover from being deformed by internal deformation during the test. The sealing mechanism is responsible for pressing the top plate of the cover to prevent deformation. Previous sealing mechanisms mainly consisted of several pressure plates or clamping columns (see prior patent: CN215414223U - an airtightness testing device for a new energy vehicle battery pack). The pressure plates or clamping columns are directly arranged above the fixture, which affects the installation and removal of the battery box cover on the fixture. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a leak detection fixture for the cover of a new energy vehicle battery pack, thereby solving the technical problem that the sealing mechanism on the previous leak detection fixture would affect the disassembly and assembly of the cover on the fixture.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A leak detection clamp for the battery pack cover of a new energy vehicle is provided, including:

[0007] A frame, with a sealing platform on the upper end of the frame, and the cover of the test chamber is adapted to be inverted on the sealing platform. An air inlet is opened in the middle of the sealing platform, and the air inlet is connected to an air inlet pipe.

[0008] Four sets of corner cylinders are distributed around the sealing platform and fixed on the platform. The corner cylinders are suitable for vertically pressing the flange plate of the box cover.

[0009] A plugging assembly adapted to be inserted into a vent hole in a box cover to seal the vent hole during testing;

[0010] A pair of guide rail beams are located on both sides of the sealing platform. One side of the guide rail beam is fixedly connected to the platform of the frame, and the other side extends out of the platform.

[0011] A pressure plate assembly, wherein lifting components are respectively provided on both sides of the pressure plate assembly, and the lower end of the lifting component is slidably engaged with the guide rail beam through a guide rail pair;

[0012] The lifting component slides on the guide beam via the guide rail pair, thereby moving the pressure plate assembly above the sealing platform. The lifting component then causes the pressure plate assembly to move up and down above the sealing platform.

[0013] Furthermore, the plugging assembly includes

[0014] A plugging plate, wherein the plugging plate has a conical cylindrical structure;

[0015] A sealing ring is disposed on the outer conical surface and is adapted to make a sealing fit with the vent hole.

[0016] Furthermore, the plugging plate includes

[0017] The left plate has a protruding ring on its inner side;

[0018] The right plate has a groove on its inner side.

[0019] A connecting bolt passes through the left and right plates and is connected to a nut, thereby locking the left and right plates together. A convex ring is inserted into a groove and abuts against the right plate. There is a spacer groove between the left and right plates, and the sealing ring is installed in the spacer groove.

[0020] Furthermore, the lifting component includes

[0021] A fixed plate, the lower end of which is connected to a slider of a guide rail pair;

[0022] Multiple lifting cylinders are provided, each of which is fixed on a fixed plate, and the upper end of each lifting cylinder is connected to a pressure plate assembly.

[0023] Furthermore, the pressure plate assembly includes

[0024] A pressure plate, the bottom surface of which is adapted to press against the box cover;

[0025] Multiple reinforcing ribs are provided, with the middle of each rib connected to a pressure plate and both ends connected to a lifting assembly.

[0026] Furthermore, the pressure plate includes

[0027] The base plate, longitudinal plates, and four side plates are provided, with the longitudinal plates connected to various reinforcing ribs.

[0028] Furthermore, a support beam is provided between the guide rail beam and the frame.

[0029] The beneficial effects of this utility model are:

[0030] This utility model relates to a leak detection fixture for a new energy vehicle battery pack cover. The fixture uses a pressure plate assembly to press and hold the cover, which is quickly and stably moved to the top of the sealing platform, so that it can be stably tested for leaks.

[0031] The pressure plate assembly, through the lifting component and guide rail pair, allows it to move freely in translation and lifting motion, making it more flexible and convenient to operate.

[0032] The plugging assembly is easy and quick to assemble, and can stably seal the vent holes. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Figure 1 This is a schematic diagram of the box lid;

[0035] Figure 2 Schematic diagram of the leak detection fixture of this utility model;

[0036] Figure 3 Schematic diagram of the leak detection clamp of this utility model (during operation);

[0037] Figure 4 This is a schematic diagram of the pressure plate assembly, the lifting assembly, and a pair of guide rail beams;

[0038] Figure 5 This is a schematic diagram of the pressure plate assembly and the lifting assembly;

[0039] Figure 6 This is a schematic diagram of the plugging assembly;

[0040] Figure 7 This is a half-sectional view of the plugging assembly;

[0041] Among them, 1. Box cover, 11. Top plate, 12. Side plate, 13. Flange plate, 14. Reinforcing plate;

[0042] 2. Frame; 21. Sealing platform; 22. Air inlet; 23. Corner cylinder; 24. Guide rail beam; 25. Support beam.

[0043] 3. Hole plugging assembly; 31. Left plate; 32. Right plate; 33. Connecting bolts; 34. Sealing ring;

[0044] 4. Lifting assembly; 41. Fixing plate; 42. Lifting cylinder;

[0045] 5. Pressure plate assembly, 51. Pressure plate, 52. Reinforcing rib plate, 53. Longitudinal plate. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] This application provides a leak detection fixture for a battery pack cover of a new energy vehicle, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, in the following embodiments, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0048] To address the technical problem in existing technologies where the sealing mechanism on a leak detection fixture affects the installation and removal of the battery pack cover on the fixture, an embodiment of this application provides a leak detection fixture for a new energy vehicle battery pack cover. This is described in detail below.

[0049] like Figure 1 The new energy vehicle battery pack cover 1 shown includes a top plate 11, four side plates 12, and four flange plates 13. Each flange plate 13 is provided with a reinforcing plate 14. When the cover 1 is pressed and positioned, the corner cylinder 23 presses against the reinforcing plate 14.

[0050] like Figures 2 to 7 As shown, a leak detection fixture for a new energy vehicle battery pack cover includes...

[0051] The frame 2 has a sealing platform 21 on the upper end of the frame 2. The test box cover 1 is adapted to be upside down on the sealing platform 21. An air inlet 22 is opened in the middle of the sealing platform 21 and the air inlet 22 is connected to an air inlet pipe.

[0052] Four sets of corner cylinders 23 are distributed around the sealing platform 21 and fixed on the platform. The corner cylinders 23 are suitable for vertically pressing the flange plate of the box cover 1.

[0053] A plugging assembly 3 is adapted to be inserted into the vent hole of the box cover 1 to block the vent hole during testing;

[0054] A pair of guide rail beams 24 are located on both sides of the sealing platform 21. One side of the guide rail beam 24 is fixedly connected to the platform of the frame 2, and the other side extends out of the platform.

[0055] The pressure plate assembly 5 has lifting components 4 on both sides, and the lower end of the lifting component 4 is in sliding fit with the guide rail beam 24 through the guide rail pair;

[0056] The lifting component 4 slides on the guide beam 24 via the guide rail pair, thereby moving the pressure plate component 5 above the sealing platform 21. The lifting component 4 drives the pressure plate component 5 to move up and down above the sealing platform 21.

[0057] In this embodiment, the sealing platform 21 is made of silicone with adhesive on the back. It is then glued to the platform. The air inlet pipe passes through the platform and is inserted into the air inlet hole 22 and fixed with adhesive. The air inlet pipe is connected to the gas leak tester.

[0058] Specifically, as an optional implementation method in this embodiment, such as Figure 6 and Figure 7 As shown, the plugging assembly 3 includes

[0059] A plugging plate, wherein the plugging plate has a conical cylindrical structure;

[0060] A sealing ring 34 is disposed on the outer conical surface and is adapted to make a sealing fit with the vent hole.

[0061] Specifically, as a preferred embodiment of this example, such as Figure 6 and Figure 7 As shown, the plugging plate includes

[0062] Left plate 31, the inner side of which is provided with a protruding ring;

[0063] Right plate 32, the inner side of which is provided with a groove;

[0064] A connecting bolt 33 passes through the left plate 31 and the right plate 32 and is connected to a nut, thereby locking the left plate 31 and the right plate 32 together. The convex ring is inserted into the groove and abuts against the right plate 32. There is a gap between the left plate 31 and the right plate 32, and the sealing ring 34 is installed in the gap.

[0065] The gap between the left plate 31 and the right plate 32, i.e. the width of the groove, is controlled by the convex ring. After the connecting bolt 33 locks the left plate 31 and the right plate 32, the sealing ring 34 is clamped.

[0066] In this embodiment, the sealing ring 34 is made of rubber, and the outer wall surface of the sealing ring 34 is adapted to the outer wall surface of the plugging plate, which is also a conical surface.

[0067] Specifically, as an optional implementation method in this embodiment, such as Figure 4 and Figure 5 As shown, the lifting component 4 includes

[0068] Fixed plate 41, the lower end of which is connected to the slider of the guide rail pair;

[0069] Three lifting cylinders 42 are fixed on the fixing plate 41 respectively, and the upper end of the lifting cylinders 42 is connected to the pressure plate assembly 5.

[0070] The lifting components 4 on both sides work synchronously, driving the pressure plate component 5 to move up and down stably. When the pressure plate component 5 moves down, it presses the box cover 1 tightly.

[0071] The lifting component 4 slides on the guide beam 24 with the help of the guide rail pair, which drives the pressure plate component 5 to move freely above the sealing platform 21.

[0072] Specifically, as an optional implementation method in this embodiment, such as Figure 7 As shown, the pressure plate assembly 5 includes

[0073] Pressure plate 51, the bottom surface of which is adapted to press against box cover 1;

[0074] Three reinforcing ribs 52 are welded to the pressure plate 51 in the middle and connected to the lifting assembly 4 at both ends.

[0075] Specifically, as an optional implementation method in this embodiment, such as Figure 5 As shown, the pressure plate 51 includes a bottom plate, a longitudinal plate 53 and four side plates, and the longitudinal plate 53 is connected to each reinforcing rib plate 52.

[0076] Four side plates are set around the base plate, and the reinforcing ribs 52 are welded to the side plates.

[0077] Specifically, as an optional implementation method in this embodiment, such as Figure 3 and Figure 4 As shown, a support beam 25 is provided between the guide rail beam 24 and the frame 2. One end of the support beam 25 is connected to the frame 2, and the other end is connected to the guide rail beam 24 extending from the platform. The support beam 25 is inclined. The support beam 25 is used to improve the stability of the connection between the guide rail beam 24 and the frame 2, so that the pressure plate assembly 5 can move stably.

[0078] The working process of this leak detection fixture is as follows:

[0079] Place the box cover 1 on the sealing platform 21, then move the pressure plate 51 above the sealing platform 21. The lifting assembly 4 drives the pressure plate 51 to press down the box cover 1, so that the box cover 1 and the sealing platform 21 form a sealing fit. Then, air is introduced into the box cover 1 through the gas leak tester to pressurize the box cover 1. The gas leak tester is used to observe the change in gas pressure inside the box cover 1. If a leak is found, soapy water is sprayed on the box cover 1 manually to find the leak point. After finding the leak point, it is marked. After the gas pressure inside the box cover 1 is released, the pressure plate 51 is lifted and then moved horizontally to the outside of the frame 2.

[0080] In this embodiment, the pressure plate 51 is a flat plate structure, which allows it to fit the top plate of the box cover 1 as a whole, and the pressure plate 51 can move without interfering with the box cover 1 being disassembled and assembled on the sealing platform 21.

[0081] All the devices (parts whose specific structures are not specified) selected in this application are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0082] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0083] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0084] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0085] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0086] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0087] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A leak detection clamp for a battery pack cover of a new energy vehicle, characterized in that, include A frame (2) is provided with a sealing platform (21) on the upper end of the frame (2). The test box cover (1) is adapted to be upside down on the sealing platform (21). An air inlet (22) is opened in the middle of the sealing platform (21). The air inlet (22) is connected to the air inlet pipe. Four sets of corner cylinders (23) are distributed around the sealing platform (21) and fixed on the platform. The corner cylinders (23) are suitable for vertically pressing the flange plate of the box cover (1). A plugging assembly (3) is adapted to be inserted into the vent hole of the box cover (1) to block the vent hole during testing; A pair of guide beams (24) are located on both sides of the sealing platform (21). One side of the guide beam (24) is fixedly connected to the platform of the frame (2), and the other side extends out of the platform. The pressure plate assembly (5) is provided with lifting components (4) on both sides of the pressure plate assembly (5). The lower end of the lifting component (4) is slidably connected to the guide rail beam (24) through the guide rail pair. The lifting component (4) slides on the guide beam (24) via the guide rail pair, thereby driving the pressure plate component (5) to move above the sealing platform (21). The lifting component (4) drives the pressure plate component (5) to move up and down above the sealing platform (21).

2. The leak detection fixture for the battery pack cover of a new energy vehicle according to claim 1, characterized in that, The plugging assembly (3) includes A plugging plate, wherein the plugging plate has a conical cylindrical structure; A sealing ring (34) is disposed on the outer conical surface and is adapted to make a sealing fit with the vent hole.

3. The leak detection fixture for the battery pack cover of a new energy vehicle according to claim 2, characterized in that, The plugging plate includes Left plate (31), the inner side of which is provided with a protruding ring; Right plate (32), the inner side of which is provided with a groove; A connecting bolt (33) passes through the left plate (31) and the right plate (32) and is connected to a nut, thereby locking the left plate (31) and the right plate (32) together. The convex ring is inserted into the groove and abuts against the right plate (32). There is a spacer groove between the left plate (31) and the right plate (32). The sealing ring (34) is installed in the spacer groove.

4. The leak detection fixture for the battery pack cover of a new energy vehicle according to claim 1, characterized in that, The lifting component (4) includes A fixed plate (41) is provided, the lower end of which is connected to the slider of the guide rail pair; Multiple lifting cylinders (42) are fixed on a fixed plate (41), and the upper end of the lifting cylinder (42) is connected to a pressure plate assembly (5).

5. The leak detection fixture for the battery pack cover of a new energy vehicle according to claim 1, characterized in that, The pressure plate assembly (5) includes Pressure plate (51), the bottom surface of which is adapted to press against the box cover (1); Multiple reinforcing ribs (52) are provided, with the middle part of the reinforcing ribs (52) connected to the pressure plate (51) and the two ends of the ribs connected to the lifting assembly (4).

6. The leak detection fixture for the battery pack cover of a new energy vehicle according to claim 5, characterized in that, The pressure plate (51) includes The base plate, the longitudinal plate (53), and the four side plates are connected to each of the reinforcing ribs (52).

7. The leak detection fixture for the battery pack cover of a new energy vehicle according to claim 1, characterized in that, A support beam (25) is provided between the guide rail beam (24) and the frame (2).

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