Automatic detection device for sealing performance of battery shell

Abstract

The utility model relates to the technical field of battery shell detection, and discloses an automatic detection device for the sealing performance of a battery shell, which comprises a detection table, and a detection mechanism is arranged on the lower surface of the detection table; the detection mechanism comprises a helium storage box, one side of the helium storage box is fixedly connected with a conveying pipe, the middle part of the conveying pipe is fixedly provided with an air pump, the upper surface of the detection table is fixedly connected with a fixed frame, the inner wall of the fixed frame is provided with a first sealing strip, the upper surface of the detection table is fixedly provided with a cylinder, and the output end of the cylinder is fixedly connected with a housing; a second sealing strip is arranged on the lower surface of the housing, and an air tightness detector is fixedly installed on the upper surface of the housing. According to the utility model, the accuracy of detection data of the battery shell is enhanced, helium can be conveniently injected into the battery shell, the sealing performance is detected by using the housing, the phenomenon of inaccurate detection data caused by fluctuation of sealing performance data can be reduced, and the automatic detection of the whole device is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of battery case detection, in particular to an automatic inspection device for the sealing performance of a battery case. Background Art

[0002] As the name implies, a battery case is the external protective layer or container of a battery, which is used to accommodate and protect key components such as the electrochemical system, electrolyte, and electrodes inside the battery. It plays a crucial role in the performance, safety, and overall lifespan of the battery. The sealing performance of the battery case is directly related to the stability of the electrolyte inside the battery. If the seal is poor, the electrolyte may leak, which will not only result in energy loss of the battery but also may cause pollution to the surrounding environment and even corrosion to other components inside the battery pack, affecting the operation of the entire battery system.

[0003] After retrieval, a Chinese patent with the application number CN202022304448.6 discloses an airtightness inspection structure for a battery bottom case assembly. Currently, there is no effective sealing detection method and it is impossible to check for welding air leakage and other situations. Therefore, the principle of sucking vacuum by a suction cup is used for sealing detection. A sealed environment is formed between the suction cup and the sealing gasket. A vacuum pumping device is used to pump vacuum for this sealed environment, and a negative pressure gauge is used to detect the air pressure value inside this sealed environment. The value of the negative pressure gauge can be directly read to accurately judge whether there is an air leakage phenomenon, and it can effectively detect the sealing performance of the battery installation part.

[0004] When detecting the sealing performance of the battery case as described above, only vacuum is extracted by the suction cup for detection. If the connection of the suction cup is not adsorbed and fastened during the operation, it will relatively affect the data of the sealing detection, thereby reducing the accuracy of the detection data. Moreover, during the overall sealing detection, the degree of automation is relatively low, which is not convenient for quickly detecting the sealing performance of the battery case and easily reduces the detection efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose an automatic inspection device for the sealing performance of a battery case.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: an automatic inspection device for the sealing performance of a battery case, including a detection table, and a detection mechanism is arranged on the lower surface of the detection table;

[0007] The detection mechanism includes a helium gas storage tank. One side of the helium gas storage tank is fixedly connected with a delivery pipe. A gas pump is fixedly installed in the middle of the delivery pipe. The upper surface of the detection table is fixedly connected with a fixed frame. The inner wall of the fixed frame is provided with a first sealing strip. The upper surface of the detection table is fixedly installed with a cylinder. The output end of the cylinder is fixedly connected with a cover shell. The lower surface of the cover shell is provided with a second sealing strip. The upper surface of the cover shell is fixedly installed with an airtight detector. The upper surface of the cover shell is fixedly connected with a folding pipe. One end of the folding pipe is fixedly connected with a connecting pipe. A vacuum pump is fixedly installed in the middle of the connecting pipe. The cylinder is arranged on one side of the vacuum pump.

[0008] As a further description of the above technical solution:

[0009] The upper surface of the detection table is provided with a clamping assembly. The clamping assembly includes two mounting frames.

[0010] As a further description of the above technical solution:

[0011] One of the mounting frames is fixedly connected with a fixed rod inside. The other mounting frame is rotatably connected with a screw rod. The screw rod is fixedly connected with a gear through a shaft rod.

[0012] As a further description of the above technical solution:

[0013] The outside of the screw rod is threadedly connected with a pressure rod. One end of the pressure rod is slidably connected to the outside of the fixed rod.

[0014] As a further description of the above technical solution:

[0015] The lower surface of the pressure rod is provided with a silica gel pad. The lower surface of the detection table is fixedly installed with a hydraulic cylinder.

[0016] As a further description of the above technical solution:

[0017] The output end of the hydraulic cylinder is fixedly connected with a rack. The upper surface of the detection table is fixedly connected with a support frame.

[0018] As a further description of the above technical solution:

[0019] The middle of the connecting pipe is arranged at the top of the support frame. One side of the helium gas storage tank is threadedly connected with a threaded cap.

[0020] The utility model has the following beneficial effects:

[0021] 1. By setting up the detection mechanism, the present utility model enhances the accuracy of the detection data of the battery case, facilitating the injection of helium into the battery case, thereby detecting the sealing performance using the cover, reducing the phenomenon of inaccurate detection data caused by fluctuations in the sealing data, facilitating the automated detection of the overall device, reducing the phenomenon of errors in the manual operation of the detection personnel, and thus facilitating rapid detection and improving the efficiency of the sealing detection.

[0022] 2. By setting up the clamping assembly, the present utility model increases the function of facilitating clamping and fastening of the battery case, reducing the phenomenon of inaccurate detection data caused by the deviation of the battery case during the detection process when it is placed on the inspection device, facilitating the operation of the detection personnel, and reducing the interference of external factors on the testing process, thereby improving the stability of the testing environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure proposed by the present utility model;

[0024] Figure 2 It is a schematic diagram of the connecting pipe structure proposed by the present utility model;

[0025] Figure 3 It is a partial structural diagram of the connection of the rack proposed by the present utility model;

[0026] Figure 4 It is a schematic diagram of the first sealing strip structure proposed by the present utility model;

[0027] Figure 5 It is a schematic diagram of the second sealing strip structure proposed by the present utility model;

[0028] Figure 6 It is a schematic diagram of the pressing rod structure proposed by the present utility model.

[0029] LEGEND DESCRIPTION:

[0030] 1. Detection table; 2. Helium gas storage tank; 3. Delivery pipe; 4. Air pump; 5. Fixed frame; 6. First sealing strip; 7. Cylinder; 8. Cover; 9. Second sealing strip; 10. Airtight detector; 11. Vacuum pump; 12. Connecting pipe; 13. Folding pipe; 14. Installation frame; 15. Fixed rod; 16. Screw; 17. Pressing rod; 18. Silicone pad; 19. Hydraulic cylinder; 20. Rack; 21. Gear; 22. Support frame; 23. Threaded cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] As shown in the attached Figure 1-6 figure, an embodiment provided by the present utility model: an automatic inspection device for the sealing performance of a battery housing, which includes an inspection table 1, and an inspection mechanism is arranged on the lower surface of the inspection table 1;

[0033] The inspection mechanism includes a helium gas storage tank 2, a delivery pipe 3 is fixedly connected to one side of the helium gas storage tank 2, an air pump 4 is fixedly installed in the middle of the delivery pipe 3, a fixed frame 5 is fixedly connected to the upper surface of the inspection table 1, a first sealing strip 6 is arranged on the inner wall of the fixed frame 5, a cylinder 7 is fixedly installed on the upper surface of the inspection table 1, the output end of the cylinder 7 is fixedly connected to a cover shell 8, a second sealing strip 9 is arranged on the lower surface of the cover shell 8, an airtight detector 10 is fixedly installed on the upper surface of the cover shell 8, a folding pipe 13 is fixedly connected to the upper surface of the cover shell 8, one end of the folding pipe 13 is fixedly connected to a connecting pipe 12, and a vacuum pump 11 is fixedly installed in the middle of the connecting pipe 12. The cylinder 7 is arranged on one side of the vacuum pump 11. The fixed frame 5 facilitates the position limitation of the cover shell 8. The cooperation of the first sealing strip 6 and the second sealing strip 9 increases the sealing performance of the cover shell 8 covering the outside of the battery housing. The folding pipe 13 facilitates folding according to the movement of the cover shell 8.

[0034] As shown in the attached Figure 6 figure, a clamping assembly is arranged on the upper surface of the inspection table 1. The clamping assembly includes two mounting frames 14. A fixed rod 15 is fixedly connected inside one of the mounting frames 14. A screw rod 16 is rotatably connected inside the other mounting frame 14. A pressure rod 17 is threadedly connected to the outside of the screw rod 16. One end of the pressure rod 17 is slidably connected to the outside of the fixed rod 15. A silica gel pad 18 is arranged on the lower surface of the pressure rod 17. The fixed rod 15 facilitates the position limitation of the moving pressure rod 17 and improves the stability of the pressure rod 17 during movement. The silica gel pad 18 facilitates the protection when the pressure rod 17 contacts the upper surface of the battery housing.

[0035] As shown in the attached Figure 3As shown in the figure, the screw rod 16 is fixedly connected with a gear 21 through a shaft rod. A hydraulic cylinder 19 is fixedly installed on the lower surface of the detection table 1. The output end of the hydraulic cylinder 19 is fixedly connected with a rack 20. A support frame 22 is fixedly connected to the upper surface of the detection table 1. The middle part of the connecting pipe 12 is arranged at the top end of the support frame 22. One side of the helium gas storage tank 2 is threadedly connected with a threaded cover 23. The gear 21 is convenient to mesh with the rack 20, so that the movement of the rack 20 drives the gear 21 to rotate. The support frame 22 is used to support the connecting pipe 12.

[0036] Working principle: When in use, first place the battery case to be detected upside down inside the fixed frame 5 on the detection table 1, and then turn on the hydraulic cylinder 19, so that the output end of the hydraulic cylinder 19 drives the rack 20 to extend. Through the meshing between the rack 20 and the gear 21, it is convenient to drive the gear 21 to rotate, so that the gear 21 drives the screw rod 16 to rotate through the shaft rod. When the screw rod 16 rotates, under the action of the thread, it is convenient to drive the pressure rod 17 to press down under the action of sliding on the outside of the fixed rod 15, so that the pressure rod 17 drives the silica gel pad 18 to descend, thereby squeezing and limiting the upside-down battery case, improving the fastening property when the battery case is placed.

[0037] Then turn on the air cylinder 7, which is convenient for the output end of the air cylinder 7 to contract. When the output end of the air cylinder 7 contracts, it drives the cover 8 to move downward. When the cover 8 drives the second sealing strip 9 to move downward, it drives the folding pipe 13 to stretch, so as to cover the battery case, and makes the second sealing strip 9 move into the first sealing strip 6. Then turn on the vacuum pump 11, and use the vacuum pump 11 and the connecting pipe 12 to suck out the air inside the cover 8 to form a vacuum state. Then turn on the air pump 4, so that the air pump 4 transports the helium gas inside the helium gas storage tank 2 to the inside of the upside-down battery case through the delivery pipe 3. Then, according to the airtight detector 10, it detects whether there is helium gas inside the vacuum chamber, which is beneficial to improving the accuracy of the airtightness detection.

[0038] Among them, in the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments of the present disclosure are involved. Other structures can refer to the usual designs. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic inspection device for the sealing performance of a battery housing, comprising an inspection table (1), characterized in that: The lower surface of the detection table (1) is provided with a detection mechanism; The detection mechanism includes a helium gas storage tank (2). One side of the helium gas storage tank (2) is fixedly connected to a delivery pipe (3). A gas pump (4) is fixedly installed in the middle of the delivery pipe (3). The upper surface of the detection table (1) is fixedly connected to a fixed frame (5). The inner wall of the fixed frame (5) is provided with a first sealing strip (6). A cylinder (7) is fixedly installed on the upper surface of the detection table (1). The output end of the cylinder (7) is fixedly connected to a cover shell (8). The lower surface of the cover shell (8) is provided with a second sealing strip (9). An airtight detector (10) is fixedly installed on the upper surface of the cover shell (8). A folding pipe (13) is fixedly connected to the upper surface of the cover shell (8). One end of the folding pipe (13) is fixedly connected to a connecting pipe (12). A vacuum pump (11) is fixedly installed in the middle of the connecting pipe (12). The cylinder (7) is arranged on one side of the vacuum pump (11).

2. The automatic inspection device for the battery case sealing performance according to claim 1, wherein: The upper surface of the detection table (1) is provided with a clamping assembly, and the clamping assembly includes two mounting frames (14).

3. The automatic inspection device for the battery case sealing performance according to claim 2, wherein: One of the mounting frames (14) has a fixed rod (15) fixedly connected to its interior, and the other mounting frame (14) has a screw rod (16) rotatably connected to its interior. The screw rod (16) is fixedly connected to a gear (21) through a shaft rod.

4. The automatic inspection device for the battery case airtightness according to claim 3, characterized in that: The outer part of the screw rod (16) is threadedly connected to a pressure rod (17), and one end of the pressure rod (17) is slidably connected to the outside of the fixed rod (15).

5. The automatic inspection device for the battery housing sealing performance according to claim 4, characterized in that: The lower surface of the pressure rod (17) is provided with a silica gel pad (18), and a hydraulic cylinder (19) is fixedly installed on the lower surface of the detection table (1).

6. The automatic inspection device for the battery case sealing performance according to claim 5, wherein: The output end of the hydraulic cylinder (19) is fixedly connected to a rack (20), and a support frame (22) is fixedly connected to the upper surface of the detection table (1).

7. The automatic inspection device for the battery housing sealing performance according to claim 1, characterized in that: The middle part of the connecting pipe (12) is arranged at the top of the support frame (22), and a threaded cover (23) is threadedly connected to one side of the helium gas storage tank (2).

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