Quickly detachable lithium battery airtightness testing device

Abstract

The utility model discloses a kind of lithium battery airtightness testing device of quick disassembly, it includes L-shaped positioning plate, L-shaped fixed plate and compression piece;L-shaped positioning plate, L-shaped fixed plate are oppositely arranged and can be disassembled and spliced to form the rectangular frame surrounding lithium battery, L-shaped positioning plate, L-shaped fixed plate bottom are formed with the supporting plate one, supporting plate two for supporting lithium battery respectively, L-shaped positioning plate is provided with inflation pipe;Compression piece is disassembled and connected in L-shaped positioning plate, L-shaped fixed plate top and is used for compressing lithium battery.The utility model is through setting L-shaped positioning plate, L-shaped fixed plate can be disassembled and spliced to form the rectangular frame surrounding lithium battery, after testing, L-shaped positioning plate, L-shaped fixed plate are separated directly, lithium battery can be taken out, disassembly is convenient and fast;Lithium battery can be prevented from appearing shaking, displacement in inflation, testing process by compression piece compression.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a quick-disassembly lithium battery airtightness testing device. Background Technology

[0002] A battery's lifespan is related to its airtightness. Poor airtightness allows air to easily penetrate the battery, affecting its internal materials and reducing its capacity. In severe cases, it can even damage the battery. Therefore, during battery production, after sealing, it's common practice to sample and test the airtightness of the batteries to avoid potential safety hazards. Current battery airtightness testing typically involves drilling holes in the side wall of the sealed battery and securing it with a fixture. The holes in the battery's side wall are aligned with the air inlet on the fixture, which is connected to a gas tank. The battery and fixture are then submerged in water, and the air inlet valve is opened, allowing nitrogen, helium, or other inert gases to be injected into the battery through the inlet pipe. Once the specified pressure is reached, the pressure is maintained for a period, and the sealed area of ​​the battery in the water is observed for bubbles to determine if there is any leakage after sealing. If bubbles are found, it indicates a leak, and the leaking battery must be immediately removed, isolated, and repaired. However, most of the current lithium battery fixing fixtures used for airtightness testing are fully enclosed structures, which are difficult to disassemble and slow to disassemble, making it difficult to remove the battery easily after testing. Utility Model Content

[0003] Based on this, the purpose of this utility model is to provide a lithium battery airtightness testing device that can be quickly disassembled. After the test, the L-shaped positioning plate and L-shaped fixing plate can be directly separated to remove the lithium battery, making disassembly convenient and quick.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a quick-detachable lithium battery airtightness testing device, which includes an L-shaped positioning plate, an L-shaped fixing plate, and a clamping component. The L-shaped positioning plate and the L-shaped fixing plate are arranged opposite to each other and can be detachably spliced ​​to form a rectangular frame surrounding the lithium battery. The bottom of the L-shaped positioning plate and the L-shaped fixing plate are respectively formed with a support plate 1 and a support plate 2 for supporting the lithium battery. An air inlet tube is provided on the L-shaped positioning plate. The clamping component is detachably connected to the top of the L-shaped positioning plate and the L-shaped fixing plate and is used to clamp the lithium battery.

[0005] This utility model uses L-shaped positioning plates and L-shaped fixing plates that can be detachably spliced ​​to form a rectangular frame surrounding the lithium battery. After testing, the L-shaped positioning plates and L-shaped fixing plates can be directly separated to remove the lithium battery, making disassembly convenient and quick. The lithium battery is pressed tightly by clamping parts to prevent it from shaking or shifting during inflation and testing.

[0006] As a further improvement of the above-mentioned solution of this utility model, the L-shaped positioning plate includes a positioning end plate and a positioning side plate connected together, and a support plate is connected to the bottom of the positioning end plate and the positioning side plate; the side of the positioning end plate away from the positioning side plate facing the positioning side plate has a plurality of mortises in the vertical direction, and the side of the positioning side plate away from the positioning end plate has a plurality of tenons in the vertical direction. The L-shaped fixing plate includes a fixed end plate and a fixed side plate connected together. The fixed end plate and the fixed side plate are respectively positioned opposite to the positioning end plate and the positioning side plate. The support plate is connected to the bottom of the fixed end plate and the fixed side plate. The side of the fixed end plate facing the fixed side plate away from the fixed side plate has multiple mortises in the vertical direction. The side of the fixed side plate away from the fixed end plate has multiple tenons in the vertical direction. The multiple tenons can be tenoned to the multiple mortises, and the multiple tenons can be tenoned to the multiple mortises.

[0007] As a further improvement of the above-mentioned solution of this utility model, a nut is installed through the positioning end plate; the outer surface of the inflation tube is provided with threads and the inflation tube is threadedly connected to the nut; one end of the inflation tube is located in the rectangular frame and an inflation head is formed, and an inflation port connected to the inflation tube is formed on the inflation head; a needle for puncturing the lithium battery is also connected to the inflation head; and a sealing ring is fitted on the inflation head.

[0008] As a further improvement to the above-mentioned solution of this utility model, the end of the inflation tube located outside the rectangular frame is connected to the air nozzle, and a rotating handle is provided on the inflation tube.

[0009] As a further improvement of the above-mentioned solution of this utility model, positioning grooves are formed on both the upper and lower sides of the positioning end plate near the fixed side plate; positioning blocks are formed on both the upper and lower sides of the fixed side plate near the positioning end plate, and the two positioning blocks are respectively engaged in the two positioning grooves. A connecting screw is screwed on the upper positioning block and the connecting screw is threadedly connected to the positioning end plate.

[0010] As a further improvement to the above-mentioned solution of this utility model, an auxiliary screw is screwed onto the positioning end plate, and the auxiliary screw is threadedly connected to the fixing side plate.

[0011] As a further improvement of the above-mentioned solution of this utility model, the clamping component includes a fixed plate, a pressure plate, and a clamping screw; the pressure plate is located below the fixed plate and its bottom is connected to an explosion-proof valve pressure adhesive, and two guide rods are connected to the pressure plate and the guide rods slide through the fixed plate; the clamping screw passes through the fixed plate and is threadedly connected to the fixed plate, and the bottom of the clamping screw is connected to the pressure plate.

[0012] As a further improvement of the above-mentioned solution of this utility model, the top of the positioning side plate and the fixed side plate are respectively formed with mounting plate one and mounting plate two. Mounting plate one and mounting plate two are arranged opposite to each other, and mounting plate one and mounting plate two are respectively formed on opposite sides with slot one and slot two through the two ends. The two ends of the fixed plate are respectively snapped and detached in slot one and slot two.

[0013] As a further improvement to the above-mentioned solution of this utility model, handle one and handle two are respectively provided on the L-shaped positioning plate and the L-shaped fixing plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This utility model uses L-shaped positioning plates and L-shaped fixing plates that can be detachably spliced ​​to form a rectangular frame surrounding the lithium battery. After testing, the L-shaped positioning plates and L-shaped fixing plates can be directly separated to remove the lithium battery, making disassembly convenient and quick. The lithium battery is pressed tightly by clamping parts to prevent it from shaking or shifting during inflation and testing.

[0015] The L-shaped positioning plate and L-shaped fixing plate of this utility model are joined by tenons, and then locked together by connecting screws. The assembly and disassembly are very convenient, saving time and effort, and are quick and easy.

[0016] This invention features a needle and a sealing ring on the inflation tube. During testing, the needle can be inserted into the lithium battery to create a hole by rotating the inflation tube. The sealing ring ensures a tight seal between the inflation head and the lithium battery, preventing air leakage during inflation. The rotating handle on the inflation tube facilitates the puncture of the lithium battery, saving time and effort and making subsequent disassembly easier. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a quick-disassembly lithium battery airtightness testing device proposed in this utility model. Figure 2 The working principle of the quick-disassembly lithium battery airtightness testing device proposed in this utility model Figure 1 ; Figure 3 The working principle of the quick-disassembly lithium battery airtightness testing device proposed in this utility model Figure 2 ; Figure 4 This is a schematic diagram of the L-shaped positioning plate in a quick-detachable lithium battery airtightness testing device proposed in this utility model. Figure 5 This is a schematic diagram of the L-shaped fixing plate in a quick-detachable lithium battery airtightness testing device proposed in this utility model. Figure 6This is a schematic diagram of the air filling tube in a quick-detachable lithium battery airtightness testing device proposed in this utility model. Figure 7 This is a schematic diagram of the clamping component in a quick-disassembly lithium battery airtightness testing device proposed in this utility model.

[0018] Attached reference numerals: 1. L-shaped positioning plate; 11. Support plate one; 12. Positioning end plate; 121. Tenon one; 122. Nut; 123. Positioning groove; 124. Auxiliary screw; 13. Positioning side plate; 131. Tenon one; 132. Mounting plate one; 1321. Slot one; 133. Handle one; 2. L-shaped fixing plate; 21. Support plate two; 22. Fixing end plate; 221. Tenon two; 23. Fixing side plate; 231 1. Tenon 2; 2. Positioning block; 2. Connecting screw; 2. Mounting plate 2; 2. Slot 2; 2. Handle 2; 3. Clamping component; 3. Fixing plate; 3. Pressure plate; 3. Clamping screw; 3. Explosion-proof valve pressure sealant; 3. Guide rod; 4. Inflation tube; 4. Inflation head; 4. Inflation port; 4. Needle; 4. Sealing ring; 4. Air nozzle; 46. Rotating handle; 5. Lithium battery. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] Reference Figures 1-3 This embodiment proposes a quick-disassembly lithium battery airtightness testing device, which includes an L-shaped positioning plate 1, an L-shaped fixing plate 2, and a clamping component 3. The L-shaped positioning plate 1 and the L-shaped fixing plate 2 are arranged opposite to each other and can be detachably spliced ​​to form a rectangular frame surrounding the lithium battery 5. The bottom of the L-shaped positioning plate 1 and the L-shaped fixing plate 2 are respectively formed with a support plate 11 and a support plate 21 for supporting the lithium battery 5. An air inlet tube 4 is provided on the L-shaped positioning plate 1. The clamping component 3 is detachably connected to the top of the L-shaped positioning plate 1 and the L-shaped fixing plate 2 and is used to clamp the lithium battery 5.

[0022] Combination Figure 4Specifically, in this embodiment, the L-shaped positioning plate 1 includes a positioning end plate 12 and a positioning side plate 13 connected together by three hexagon socket head cap screws. A support plate 11 is horizontally arranged and connected to the bottom of the positioning end plate 12 and the positioning side plate 13 by screws. The side of the positioning end plate 12 facing the positioning side plate 13 has multiple mortises 121 formed vertically, and the side of the positioning side plate 13 facing the positioning end plate 12 has multiple tenons 131 formed vertically. A nut 122 is installed through the positioning end plate 12. Positioning grooves 123 are formed on both the upper and lower sides of the side of the positioning end plate 12 facing the positioning side plate 13, and screw holes are opened at the bottom of both positioning grooves 123. An auxiliary screw 124 is threadedly connected to the side of the positioning end plate 12 facing the positioning side plate 11. For ease of operation, a handle 133 is also installed on the outside of the positioning side plate 13. In this embodiment, the handle 133 is made of stainless steel. To facilitate the installation of other components, an installation plate 132 is integrally formed on the top of the positioning side plate 13. The installation plate 132 has a through slot 1321 on the side facing the positioning end plate 12.

[0023] Combination Figure 5 Corresponding to the L-shaped positioning plate 1, the L-shaped fixing plate 2 in this embodiment includes a fixing end plate 22 and a fixing side plate 23 connected together by three hexagon socket head cap screws. The fixing end plate 22 and the fixing side plate 23 are respectively positioned opposite to the positioning end plate 12 and the positioning side plate 13. The support plate 21 is horizontally arranged and connected to the bottom of the fixing end plate 22 and the fixing side plate 23 by screws. Multiple mortises 221 are formed vertically on the side of the fixing end plate 22 facing the fixing side plate 23, and multiple tenons 231 are formed vertically on the side of the fixing side plate 23 facing the fixing end plate 22. Positioning blocks 232 are formed at both the top and bottom ends of the side of the fixing side plate 23 facing the fixing end plate 22, and connecting screws 233 are threaded onto the two positioning blocks 232. For ease of operation, a handle 235 is also installed on the outside of the fixing side plate 23. In this embodiment, the handle 235 is made of stainless steel. To facilitate the installation of other components, a mounting plate 234 is integrally formed on the top of the fixed side plate 23. The mounting plate 234 has a slot 2341 with both ends through it on the side facing the fixed end plate 22.

[0024] When assembling the L-shaped positioning plate 1 and the L-shaped fixing plate 2, first, align the multiple tenons 131 with the multiple mortises 221 and the multiple tenons 231 with the multiple mortises 121. Then, push the L-shaped fixing plate 2 closer to the L-shaped positioning plate 1, so that the multiple tenons 131 are inserted into the multiple mortises 221 and the multiple tenons 231 are inserted into the multiple mortises 121. At this time, the two positioning blocks are respectively inserted into the two positioning slots 123. Then, the connecting screws 233 can be rotated to connect with the positioning end plate 12, thereby forming a rectangular frame. When separating the L-shaped positioning plate 1 and the L-shaped fixing plate 2, first separate the connecting screws 233 from the positioning end plate 12, pull the L-shaped fixing plate 2 to separate it from the L-shaped positioning plate 1. The auxiliary screws 124 can push the L-shaped fixing plate 2 out from the side to assist in removing the L-shaped fixing plate 2.

[0025] Combination Figure 6 In this embodiment, the outer surface of the inflation tube 4 is threaded. The inflation tube 4 passes through the nut 122 and is threadedly connected to the nut 122. One end of the inflation tube 4, located within the rectangular frame, forms an inflation head 41 with an inflation port 42 communicating with the inflation tube 4. The inflation head 41 is also connected to a piercing needle 43 coaxial with the inflation port 42 for piercing the lithium battery 5. The inflation port 42 has a rectangular cross-section, and the piercing needle 43 has a conical structure. A sealing ring 44, made of silicone, is fitted onto the inflation head 41. The other end of the inflation tube 4, located outside the rectangular frame, is connected to an air nozzle 45 via an elbow, and a rotating handle 46 is provided on the inflation tube 4.

[0026] Combination Figure 7 In this embodiment, the clamping component 3 includes a fixing plate 31, a pressure plate 32, and a clamping screw 33. The two ends of the fixing plate 31 are respectively snapped into slot 1321 and slot 2341. The pressure plate 32 is located below the fixing plate 31, and its bottom is connected to an explosion-proof valve pressure pad 34. Two guide rods 35 are connected to the pressure plate 32, and the guide rods 35 slide through the fixing plate 31. The clamping screw 33 passes through the fixing plate 31 and is threadedly connected to the fixing plate 31, with the bottom of the clamping screw 33 connected to the pressure plate 32.

[0027] The above-described structure of the quick-detachable lithium battery airtightness testing device in this embodiment allows for the application of sealant to the explosion-proof valve of the lithium battery 5 during airtightness testing to prevent damage during inflation. Figure 2 , Figure 3First, separate the L-shaped positioning plate 1 and the L-shaped fixing plate 2. Place the lithium battery 5 to be tested inside the L-shaped fixing plate 2. At this time, the lithium battery 5 is mainly supported by the second support plate 21. Then, push the L-shaped fixing plate 2 to move and splice it with the L-shaped positioning plate 1. The resulting rectangular frame just surrounds the lithium battery 5. Fix the lithium battery 5 by tightening the connecting screw 233 and the auxiliary screw 124. Then, connect the fixing plate 31 with the mounting plate 132 and the mounting plate 234. At this time, the explosion-proof valve pressure 34 is exactly opposite to the explosion-proof valve of the lithium battery 5. Rotate the tightening screw 33 to make the pressure plate 32 drop, so that the explosion-proof valve pressure 34 is pressed against the explosion-proof valve, preventing the lithium battery 5 from shaking or shifting during inflation and testing. Then, hold the rotating handle 4. 6. Rotate the inflation tube 4 clockwise to allow the needle 43 to penetrate the lithium battery 5 to a certain depth. The sealing ring 44 will press against the lithium battery 5 to prevent gas leakage. Then, connect the air source through the air nozzle 45 to inflate the battery. Submerge the entire device in water and observe for air bubbles. If air bubbles are found, it indicates that the lithium battery 5 has a leakage problem and needs to be isolated for repair. At this time, remove the device, rotate the clamping screw 33 to disengage the explosion-proof valve pressure 34 from the explosion-proof valve of the lithium battery 5, remove the clamping part 3, rotate the rotating handle 46 to separate the inflation head 41 from the lithium battery 5, loosen the connecting screw 233 and the auxiliary screw 124, and then pull the L-shaped fixing plate 2 to separate the L-shaped positioning plate 1 from the L-shaped fixing plate 2. The lithium battery 5 can then be removed quickly and easily.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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 quick-detachable lithium battery airtightness testing device, characterized in that, It includes an L-shaped positioning plate (1), an L-shaped fixing plate (2), and a clamping component (3); the L-shaped positioning plate (1) and the L-shaped fixing plate (2) are arranged opposite to each other and can be detachably spliced ​​to form a rectangular frame surrounding the lithium battery (5). The bottom of the L-shaped positioning plate (1) and the L-shaped fixing plate (2) are respectively formed with a support plate 1 (11) and a support plate 2 (21) for supporting the lithium battery (5). An air inlet tube (4) is provided on the L-shaped positioning plate (1); the clamping component (3) is detachably connected to the top of the L-shaped positioning plate (1) and the L-shaped fixing plate (2) and is used to clamp the lithium battery (5).

2. The quick-detachable lithium battery airtightness testing device according to claim 1, characterized in that, The L-shaped positioning plate (1) includes a positioning end plate (12) and a positioning side plate (13) connected together. The support plate (11) is connected to the bottom of the positioning end plate (12) and the positioning side plate (13). The side of the positioning end plate (12) facing the positioning side plate (13) away from the positioning side plate (13) has a plurality of mortises (121) in the vertical direction. The side of the positioning side plate (13) away from the positioning end plate (12) has a plurality of tenons (131) in the vertical direction. The L-shaped fixing plate (2) includes a fixed end plate (22) and a fixed side plate (23) connected together. The fixed end plate (22) and the fixed side plate (23) are respectively positioned opposite to the positioning end plate (12) and the positioning side plate (13). The support plate (21) is connected to the bottom of the fixed end plate (22) and the fixed side plate (23). The side of the fixed end plate (22) facing the fixed side plate (23) away from the fixed side plate (23) has a plurality of mortises (221) in the vertical direction. The side of the fixed side plate (23) away from the fixed end plate (22) has a plurality of tenons (231) in the vertical direction. The plurality of tenons (131) can be tenoned with the plurality of mortises (121) respectively. The plurality of tenons (231) can be tenoned with the plurality of mortises (221) respectively.

3. The quick-detachable lithium battery airtightness testing device according to claim 2, characterized in that, A nut (122) is installed through the positioning end plate (12); the outer surface of the inflation tube (4) is threaded and the inflation tube (4) is threadedly connected to the nut (122). An inflation head (41) is formed at one end of the inflation tube (4) within the rectangular frame, and an inflation port (42) communicating with the inflation tube (4) is formed on the inflation head (41). A needle (43) for puncturing the lithium battery (5) is also connected to the inflation head (41), and a sealing ring (44) is fitted on the inflation head (41).

4. The quick-detachable lithium battery airtightness testing device according to claim 3, characterized in that, The inflation tube (4) is connected to the air nozzle (45) at one end outside the rectangular frame, and a rotating handle (46) is provided on the inflation tube (4).

5. The quick-detachable lithium battery airtightness testing device according to claim 2, characterized in that, The positioning end plate (12) has positioning grooves (123) on both the upper and lower sides of the end near the fixed side plate (23); the fixed side plate (23) has positioning blocks (232) on both the upper and lower sides of the side near the positioning end plate (12). The two positioning blocks (232) are respectively engaged in the two positioning grooves (123), and the two positioning blocks (232) are screwed with connecting screws (233) and the connecting screws (233) are threaded to the positioning end plate (12).

6. The quick-detachable lithium battery airtightness testing device according to claim 2, characterized in that, An auxiliary screw (124) is screwed onto the positioning end plate (12), and the auxiliary screw (124) is threaded to the fixing side plate (23).

7. The quick-detachable lithium battery airtightness testing device according to claim 2, characterized in that, The clamping component (3) includes a fixing plate (31), a pressure plate (32), and a clamping screw (33); the pressure plate (32) is located below the fixing plate (31) and its bottom is connected to an explosion-proof valve pressure plate (34); two guide rods (35) are connected to the pressure plate (32) and the guide rods (35) slide through the fixing plate (31); the clamping screw (33) passes through the fixing plate (31) and is threadedly connected to the fixing plate (31); the bottom of the clamping screw (33) is connected to the pressure plate (32).

8. The quick-detachable lithium battery airtightness testing device according to claim 7, characterized in that, The top of the positioning side plate (13) and the fixing side plate (23) are respectively formed with mounting plate one (132) and mounting plate two (234). Mounting plate one (132) and mounting plate two (234) are arranged opposite to each other and mounting plate one (132) and mounting plate two (2341) with through slots at both ends are formed on opposite sides of mounting plate one (1321) and mounting plate two (2341). The two ends of the fixing plate (31) are respectively snapped into and detached in the mounting plate one (1321) and mounting plate two (2341).

9. The quick-detachable lithium battery airtightness testing device according to claim 1, characterized in that, The L-shaped positioning plate (1) and the L-shaped fixing plate (2) are respectively equipped with handle one (133) and handle two (235).

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