A pressing device for airtight detection of a battery pack

Abstract

The utility model relates to battery manufacturing technical field, specifically disclose a kind of battery package air-tight detection is used to compact device. The battery package air-tight detection is used to compact device includes several presser plates and compact crossbeam. Several presser plates are arranged in parallel and are spaced apart and several presser plates completely cover the upper cover plate of the battery package. Compact crossbeam is arranged above several presser plates and is connected with each presser plate, and the both ends of compact crossbeam are slidably connected with the hook piece for hooking the lifting lug of the battery package. The compact device of the utility model, by setting several presser plates to ensure that the upper cover plate of battery package can be completely covered, by hooking the lifting lug of battery package and fixing, the problem of upper cover plate bulging deformation can be minimized.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a clamping device for testing the airtightness of a battery pack. Background Technology

[0002] The airtightness of new energy batteries directly affects their safety and lifespan. If gas leaks inside the battery or is corroded by dust, rain, or road water in the external environment, it can lead to dangerous situations such as decreased battery performance, overheating, short circuits, or even explosions.

[0003] The top cover of a battery pack is typically a thin sheet metal part, and it is relatively large. Since the top cover is not bolted to the outer casing, it deforms under pressure during airtightness testing when the battery pack is inflated. After the test, some of this deformation cannot be reversed after the pressure is released, causing the top cover to bulge, which affects the product's appearance and reduces the defect rate. Some existing testing methods involve placing a counterweight on top of the cover to prevent deformation. However, due to the uncertainty of the deformation location, this method is not very effective in preventing deformation. Furthermore, the counterweight itself has weight, which may cause downward deformation of the top cover in the early stages of testing. In addition, there is a risk that the counterweight may roll off during testing, posing a safety hazard to production personnel. Utility Model Content

[0004] Based on this, in order to address the technical problem that the upper cover plate deforms under stress during the current battery pack airtightness test, this utility model provides a clamping device for battery pack airtightness testing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a clamping device for testing the airtightness of a battery pack, which includes several pressure plates and a clamping beam; the several pressure plates are arranged side by side at intervals and the several pressure plates completely cover the upper cover of the battery pack; the clamping beam is arranged above the several pressure plates and connected to each pressure plate, and hooks for hooking the lifting lugs of the battery pack are slidably connected to both ends of the clamping beam.

[0006] The clamping device of this utility model uses several pressure plates to ensure complete coverage of the top cover of the battery pack, and uses hooks to hook the battery pack lifting lugs for fixation, which can minimize the problem of the top cover bulging and deforming.

[0007] As a further improvement of the above-mentioned solution of this utility model, several connecting plates are provided on the top of the pressure plate at both sides of the pressing beam, and the connecting plates are detachably connected to the pressing beam.

[0008] As a further improvement to the above-mentioned solution of this utility model, the pressure plate has a square structure.

[0009] As a further improvement to the above-described solution of this utility model, the number of pressure plates is two, and the pressure plates are made of insulating material. Since the pressure plates are in direct contact with the battery pack, the insulating material of the pressure plates can prevent the generation of static electricity.

[0010] As a further improvement to the above-mentioned solution of this utility model, the material of the pressure plate is polyoxymethylene.

[0011] As a further improvement to the above-mentioned solution of this utility model, the hook includes a sleeve and a hook, the sleeve is slidably fitted on the clamping crossbeam, and the hook is connected to the bottom of the sleeve.

[0012] As a further improvement of the above-mentioned solution of this utility model, the top of the sleeve is movably connected with a knob that can abut against the pressing beam and an indexing pin. The end of the pressing beam is provided with several parallel insertion holes, and the indexing pin can be inserted into the insertion holes.

[0013] As a further improvement to the above-mentioned solution of this utility model, a protective layer is provided on the surface of the hook to avoid damage to the battery pack.

[0014] As a further improvement of the above-mentioned solution of this utility model, a mounting plate is connected to the bottom of the sleeve, and guide rails are provided on both sides of the mounting plate. The hook is connected to the slider on the two guide rails. The slider is provided with a second indexing pin. Several second insertion holes are arranged side by side on the mounting plate. The second indexing pin is inserted into one of the second insertion holes.

[0015] As a further improvement to the above-mentioned solution of this utility model, the clamping beam is made of aluminum profile and has several handles spaced apart on its top. This lightweight design reduces the workload of operators, and the handles facilitate easy access, enabling quick testing.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The clamping device of this utility model selects appropriate pressure plates according to the size of the top cover of the battery pack, so that several pressure plates can completely cover the top cover of the battery pack. The device is fixed by hooking the battery pack lifting lugs with hooks, which can minimize the problem of the top cover bulging and deforming.

[0017] The clamping beam is made of aluminum profile and features a lightweight design, which can reduce the workload of operators. It is easy to pick up with a handle, enabling quick testing. Attached Figure Description

[0018] Figure 1 A schematic diagram of a clamping device for testing the airtightness of a battery pack provided in an embodiment of this utility model; Figure 2 for Figure 1 Exploded view; Figure 3 This is a schematic diagram of the hook component in a clamping device for testing the airtightness of a battery pack, provided as an embodiment of the present invention.

[0019] Reference numerals in the attached diagram: 1. Pressure plate; 2. Pressure beam; 3. Connecting plate; 4. Sleeve; 5. Hook; 6. Knob; 7. Indexing pin one; 8. Mounting plate; 9. Guide rail; 10. Slider; 11. Indexing pin two; 12. Handle; 13. Insertion hole two; 14. Protective layer. Detailed Implementation

[0020] To facilitate understanding of this invention, a more comprehensive description of the invention will be provided below with reference to specific embodiments. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of this invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Reference Figure 1 , Figure 2 This embodiment proposes a clamping device for testing the airtightness of a battery pack, which includes two pressure plates 1 and a clamping crossbeam 2.

[0023] Two pressure plates 1 are arranged side by side. During the battery pack airtightness test, the two pressure plates 1 cover the upper cover of the battery pack. The size of the two pressure plates 1 must be sufficient to completely cover the entire upper cover. The appropriate size of the pressure plates 1 can be selected according to the size of the battery pack. In this embodiment, the pressure plates 1 are square or rectangular structures. The pressure plates 1 are in direct contact with the battery pack, therefore, it is required that static electricity be prevented when the pressure plates 1 are in contact with the battery pack. The material of the pressure plates 1 can be polyoxymethylene (POM).

[0024] The clamping beam 2 is positioned above the two pressure plates 1. Several connecting plates 3 are screwed to the top of the pressure plates 1 on both sides of the clamping beam 2, and these connecting plates 3 are bolted to the clamping beam 2. Hooks for hooking onto the lifting lugs on the sides of the battery pack are slidably connected to both ends of the clamping beam 2; the two hooks are arranged opposite each other. Figure 3The hook assembly includes a sleeve 4 and a hook 5. The sleeve 4 is slidably fitted onto the clamping beam 2. A knob 6 and an indexing pin 7 are movably connected to the top of the sleeve 4 to abut against the clamping beam 2. Several parallel insertion holes 1 are provided at the end of the clamping beam 2, and the indexing pin 7 can be inserted into these holes. A mounting plate 8 is connected to the bottom of the sleeve 4. Guide rails 9 are provided on both sides of the mounting plate 8. The hook 5 is connected to sliders 10 on the two guide rails 9. An indexing pin 2 11 is provided on the slider 10. Several parallel insertion holes 2 13 are provided on the mounting plate 8. After adjusting the position of the sleeve 4, the indexing pin 2 11 engages with one of the insertion holes 2 13. A polyurethane protective layer 14 is provided on the surface of the hook 5 to prevent damage to the battery pack. For easy handling, four handles 12 are also provided on the top of the clamping beam 2 for quick testing.

[0025] In this embodiment, when using the clamping device, first select a suitable size of pressure plate 1 according to the size of the battery pack to be tested. After adjusting the distance between the two pressure plates 1, use screws to connect the connecting plate to the clamping beam 2. The operator takes the handle 12 and places the entire clamping device on the top cover of the battery pack to be tested. Adjust the position of the two pressure plates 1 so that the two pressure plates 1 can completely cover the entire top cover. Then move the two sleeves 4 to adjust the position of the two hooks 5 so that the two hooks 5 can hook onto the lifting lugs on the two sides of the battery pack respectively. After the initial position is adjusted, tighten the knob 6 and the indexing pin 1 7. Then continue to move the slider 10 to fine-tune the position of the hooks 5 to ensure that the hooks 5 are hooked onto the lifting lugs. After adjustment, lock the indexing pin 2 11, and the airtightness test of the battery pack can be carried out.

[0026] It should be noted that when a component is said to be "installed on" another component, it can be directly on the other component or it may be in a component that is centered on it. When a component is said to be "set on" another component, it can be directly set on the other component or it may also be in a component that is centered on it. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be in a component that is centered on it.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A clamping device for testing the airtightness of a battery pack, characterized in that, It includes several pressure plates (1) and a pressing beam (2); the several pressure plates (1) are arranged side by side at intervals and the several pressure plates (1) completely cover the upper cover of the battery pack; the pressing beam (2) is set above the several pressure plates (1) and connected to each pressure plate (1), and both ends of the pressing beam (2) are slidably connected with hooks for hooking the lifting lugs of the battery pack.

2. The clamping device for battery pack airtightness testing according to claim 1, characterized in that, Several connecting plates (3) are provided on the top of the pressure plate (1) on both sides of the pressure beam (2), and the connecting plates (3) are detachably connected to the pressure beam (2).

3. The clamping device for battery pack airtightness testing according to claim 1, characterized in that, The pressure plate (1) has a square structure.

4. The clamping device for battery pack airtightness testing according to claim 1, characterized in that, There are two pressure plates (1), and the pressure plates (1) are made of insulating material.

5. The clamping device for battery pack airtightness testing according to claim 4, characterized in that, The material of the pressure plate (1) is polyoxymethylene.

6. The clamping device for battery pack airtightness testing according to claim 1, characterized in that, The hook includes a sleeve (4) and a hook (5). The sleeve (4) is slidably fitted on the clamping beam (2), and the hook (5) is connected to the bottom of the sleeve (4).

7. The clamping device for battery pack airtightness testing according to claim 6, characterized in that, The top of the sleeve (4) is movably connected to a knob (6) that can abut against the pressing beam (2) and an indexing pin (7). The end of the pressing beam (2) is provided with several parallel insertion holes, and the indexing pin (7) can be inserted into the insertion holes.

8. The clamping device for battery pack airtightness testing according to claim 6, characterized in that, The hook (5) has a protective layer (14) on its surface.

9. The clamping device for battery pack airtightness testing according to claim 6, characterized in that, The bottom of the sleeve (4) is connected to the mounting plate (8). The mounting plate (8) is provided with guide rails (9) on both sides. The hook (5) is connected to the slider (10) on the two guide rails (9). The slider (10) is provided with indexing pin two (11). The mounting plate (8) is provided with several parallel insertion holes two (13). The indexing pin two (11) is inserted into one of the insertion holes two (13).

10. The clamping device for battery pack airtightness testing according to claim 1, characterized in that, The clamping beam (2) is made of aluminum profile and has several handles (12) spaced apart on the top.

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