Packaging equipment for detecting sealing performance of lithium battery

Abstract

The invention discloses packaging equipment for lithium battery sealing performance detection, and belongs to the technical field of battery core packaging detection, an upper end cover is clamped on a storage box, peripheral air inlet pressure measuring boxes are fixedly connected to the periphery and the bottom of the inner wall face of the storage box, an upper air inlet pressure measuring box is fixedly connected to the side, close to the storage box, of the upper end cover, and a lower air inlet pressure measuring box is fixedly connected to the side, close to the storage box, of the upper end cover. One end, far away from the storage box, of the air inlet valve penetrates through the outer wall of the storage box and is communicated with a first air conveying pipe, and when air gradually enters the outer peripheral air inlet pressure measuring box and the upper air inlet pressure measuring box, if the sealing performance of the surfaces, abutting against the outer peripheral air inlet pressure measuring box and the upper air inlet pressure measuring box, of the lithium battery is insufficient, the air inlet valve is opened, and the air inlet valve is closed. When the lithium battery is in use, the gas leaks from the gaps, and the gas pressure alarm sensor continuously monitors the gas inlet amount of the gas inlet valve, detects which surface of the lithium battery has insufficient sealing performance at present, and further positions which surface of the lithium battery has the problem of insufficient sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell packaging detection, and in particular to a packaging device for lithium battery sealing detection. Background Art

[0002] In the production and manufacturing process of lithium batteries, sealing testing is an important link to ensure the quality and safety of batteries. After the lithium battery core is placed in the shell, the cover plates and shells at both ends of the shell need to be tightly pressed together by welding to achieve the internal sealing of the battery. However, during the welding process, due to the influence of various factors, such as improper setting of welding process parameters, quality problems of welding materials, stability of welding equipment, etc., defects such as welding penetration and welding leakage may occur. These welding defects will cause safety hazards to the subsequent charging and discharging performance of lithium batteries. Failure of battery sealing may cause leakage of electrolyte inside the battery, which may lead to serious consequences such as battery corrosion, short circuit, fire and even explosion. In addition, poor battery sealing may also cause moisture to enter the battery, accelerate the aging process of the battery, and shorten the battery life.

[0003] In the patent titled "A packaging device and method for lithium battery production based on sealing detection" and publication number: CN118050130B, it is proposed that after the existing multiple lithium batteries are connected to the outer shell and the sealing top cover by welding or the like, if complete sealing cannot be achieved, then the sealing performance of the batteries is difficult to be completely consistent. There will always be a situation where the sealing performance of one of the lithium batteries is greater than or lower than the sealing performance of other lithium batteries. The air pressure discharge mechanism works to gradually cause positive or negative pressure to appear on the inside of the two placement boxes. When there is a sealing problem with the lithium battery, the pressure in the placement box will act on the lithium battery. Because the sealing performance of the two lithium batteries is difficult to be consistent, the overall purpose is to judge whether the internal pressures of the two placement boxes are consistent, so as to judge the sealing performance of the lithium battery. However, the overall purpose is to judge whether there is a problem with the sealing, and it cannot judge which position of the lithium battery has insufficient sealing. For this reason, a packaging device for lithium battery sealing detection is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a packaging device for lithium battery sealing detection to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a packaging device for lithium battery sealing detection, comprising a storage box, an upper end cover is clamped on the storage box, peripheral air intake pressure measuring boxes are fixedly connected to the inner wall surface and the bottom of the storage box, an upper air intake pressure measuring box is fixedly connected to the side of the upper end cover close to the storage box, a plurality of peripheral air intake pressure measuring boxes and the outside of the upper air intake pressure measuring box are connected to an air intake valve, an air pressure alarm sensor is installed on the outside of the air intake valve, an end of the air intake valve away from the storage box passes through the outer wall of the storage box and is connected to a first gas delivery pipe, an end of the first gas delivery pipe away from the air intake valve is connected to a gas diversion box, and the outside of the gas diversion box is connected to a two-way air pump.

[0006] Preferably, the peripheral air intake pressure measuring box and the upper air intake pressure measuring box are integrally formed with wear-resistant expansion sealing rubber on the side away from the storage box, and the inner parts of the peripheral air intake pressure measuring box and the upper air intake pressure measuring box are provided with air intake grooves, and the air intake grooves are connected with the inner part of the air intake valve.

[0007] Preferably, a pull plate is fixedly connected to the inside of the wear-resistant expansion sealing rubber, a side of the pull plate away from the wear-resistant expansion sealing rubber is fixedly connected to multiple pull ropes, and one end of the pull rope away from the wear-resistant expansion sealing rubber is fixedly connected to the inner wall surface of the air intake groove.

[0008] Preferably, a soft inclined expansion claw plate is integrally formed on the exterior of the upper air intake pressure measuring box, and an inclined snap-in groove is integrally formed on the inner wall surface of the storage box.

[0009] Preferably, an elastic film is integrally formed inside the soft inclined expansion claw plate, a storage chamber is formed between the elastic film and the soft inclined expansion claw plate, and the storage chamber is filled with magnetic powder.

[0010] Preferably, a bottom pushing sac is integrally formed inside the peripheral air intake pressure measuring box located at the bottom of the storage box, and the outside of the gas diversion box is connected to a second gas delivery pipe via an electric control valve, and one end of the second gas delivery pipe away from the gas diversion box respectively passes through the outer walls of the storage box and the peripheral air intake pressure measuring box and is connected to the bottom pushing sac.

[0011] Preferably, a plurality of positioning threaded holes are provided on the outside of the upper end cover and the upper surface of the storage box.

[0012] Preferably, the upper end cover is connected to a pressure relief valve.

[0013] Preferably, a bottom suction cup is installed at the bottom of the storage box.

[0014] Preferably, the air inlet of the bidirectional air pump is connected to an adsorption diversion box, the outside of the adsorption diversion box is connected to two suction hoses, the side of the suction hose away from the adsorption diversion box is connected to a suction valve, and the end of the suction valve away from the suction hose passes through the outer wall of the upper end cover and is connected to a negative pressure suction cup.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, the top, bottom, left, right, front and back sides of the lithium battery are abutted by multiple peripheral air intake pressure measuring boxes and upper air intake pressure measuring boxes, and a gas injection test is performed after the abutment. When the gas gradually enters the peripheral air intake pressure measuring box and the upper air intake pressure measuring box, if the surface where the lithium battery abuts against the peripheral air intake pressure measuring box and the upper air intake pressure measuring box is not sealed enough, the gas will leak out from these gaps, and the air pressure alarm sensor will continuously monitor the air intake volume of the intake valve. When the air intake volume is greater than the standard value, an alarm will be issued to detect which surface of the lithium battery currently has the problem of insufficient sealing, and further locate the problem of insufficient sealing on that surface of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of a lithium battery and a peripheral air intake pressure measuring box in an embodiment of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the negative pressure suction cup and the upper air intake pressure measuring box in an embodiment of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the suction hose and the suction valve in the embodiment of the present invention;

[0021] Figure 5 is a schematic cross-sectional structural diagram of an embodiment of the present invention;

[0022] Figure 6 It is a schematic structural diagram of a soft inclined expansion claw plate and an elastic membrane in an embodiment of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the air intake slot in an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of the bottom suction cup in an embodiment of the present invention;

[0025] Fig. 9 This is a schematic diagram of the structure of the bottom push capsule in an embodiment of the present invention;

[0026] Fig.10 For the embodiment of the present invention Figure 7 Schematic diagram of the enlarged structure of area A in .

[0027] In the figure: 100, storage box; 101, peripheral air intake pressure measuring box; 102, lithium battery; 103, gas delivery pipe; 104, air intake valve; 105, air pressure alarm sensor; 106, gas diversion box; 107, two-way air pump; 108, upper end cover; 109, upper air intake pressure measuring box; 200, air intake groove; 201, wear-resistant expansion sealing rubber; 300, pull rope; 301, pull plate; 400, inclined snap-in groove; 401, soft inclined expansion claw plate; 500, elastic membrane; 501, magnetic powder; 600, bottom push capsule; 601, gas delivery pipe; 700, adsorption diversion box; 701, suction hose; 702, suction valve; 703, negative pressure suction cup; 800, positioning threaded hole; 900, pressure relief valve; 901, bottom suction cup. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1: Figure 1 As shown, the present application provides a packaging device for detecting the sealing property of a lithium battery, comprising a storage box 100, an upper end cover 108 being clamped on the storage box 100, peripheral air intake pressure measuring boxes 101 being fixedly connected to the inner wall surfaces and the bottom of the storage box 100, an upper air intake pressure measuring box 109 being fixedly connected to the side of the upper end cover 108 close to the storage box 100, the exteriors of the plurality of peripheral air intake pressure measuring boxes 101 and the upper air intake pressure measuring box 109 are all connected to an air intake valve 104, an air pressure alarm sensor 105 is installed on the exterior of the air intake valve 104, an end of the air intake valve 104 away from the storage box 100 passes through the outer wall of the storage box 100 and is connected to a first gas delivery pipe 103, an end of the first gas delivery pipe 103 away from the air intake valve 104 is connected to a gas diversion box 106, and the exterior of the gas diversion box 106 is connected to a two-way air pump 107.

[0030] Specifically, during use, the lithium battery 102 is placed inside the storage box 100, and the storage box 100 is placed in the middle position of multiple peripheral air intake pressure measuring boxes 101, so that multiple peripheral air intake pressure measuring boxes 101 are abutted against the surrounding surfaces and bottom surfaces of the lithium battery 102. After the abutment is completed, the staff snaps the upper end cover 108 into the interior of the storage box 100, so that the upper air intake pressure measuring box 109 is fully inserted into the interior of the storage box 100, and further makes the bottom of the upper air intake pressure measuring box 109 fit above the battery. After the upper air intake pressure measuring box 109 and the peripheral air intake pressure measuring box 101 are fully fitted with the lithium battery 102, the two-way air pump 107 is turned on. After the two-way air pump 107 is started, the two-way air pump 107 will concentrate the gas into the interior of the gas diversion box 106. After being concentrated in the interior of the gas diversion box 106, the gas inside the gas diversion box 106 will be transported to multiple In the first gas delivery pipes 103, when the gas is concentrated through the multiple first gas delivery pipes 103 and enters the interior of the air intake valve 104, the air intake valve 104 will transport the gas to the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 respectively. When the gas gradually enters the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109, because the opening surfaces of the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 are in contact with the lithium battery 102, when the air pressure inside the peripheral air intake pressure measuring box 101 and the air intake valve 104 gradually increases, once one of the side walls of the lithium battery 102 has insufficient sealing, the air pressure entering the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 through the first gas delivery pipes 103 and the air intake valve 104 will change, and the air pressure alarm sensor 105 can be used to timely know whether there is a problem with the air pressure and make a timely alarm.

[0031] like Figure 1 As shown, a plurality of positioning threaded holes 800 are provided on the exterior of the upper end cover 108 and the upper surface of the storage box 100 .

[0032] Specifically, after the upper end cover 108 is snapped onto the storage box 100, the staff can thread the bolts into the positioning threaded holes 800 on the upper surfaces of the storage box 100 and the upper end cover 108 respectively, and further ensure the connection stability between the storage box 100 and the upper end cover 108 through the connection between the positioning threaded holes 800 and the bolts.

[0033] like Figure 1 and Figure 4As shown, the upper end cover 108 is connected to a pressure relief valve 900. When the measurement is completed, the excess gas inside the storage box 100 is discharged in advance through the upper air intake pressure measuring box 109. After the pressure relief valve 900 is opened, the two-way air pump 107 is started in reverse, so that the gas inside the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 is extracted through multiple air intake valves 104.

[0034] like Figure 8 As shown, a bottom suction cup 901 is installed at the bottom of the storage box 100. Through the setting of the bottom suction cup 901, the bottom suction cup 901 can be used to absorb the placement table during the placement of the storage box 100, thereby ensuring the stability of the storage box 100 during the detection process.

[0035] like Figure 3 and Figure 4 As shown, the air inlet of the two-way air pump 107 is connected to the adsorption diversion box 700, and the outside of the adsorption diversion box 700 is connected to two suction hoses 701. The side of the suction hose 701 away from the adsorption diversion box 700 is connected to the suction valve 702, and the end of the suction valve 702 away from the suction hose 701 passes through the outer wall of the upper end cover 108 and is connected to the negative pressure suction cup 703.

[0036] Specifically, during use, after the test of the lithium battery 102 is completed, the staff can start the two-way air pump 107. After starting the two-way air pump 107, the two-way air pump 107 will evacuate air through the adsorption diversion box 700. During the air extraction process, the gas in the storage box 100 and the negative pressure suction cup 703 will be sucked into the hose 701 and gradually sucked out. When the negative pressure suction cup 703 continues to adsorb, a negative pressure effect will be formed. After the negative pressure effect is formed, the lithium battery 102 can be adsorbed by the negative pressure suction cup 703. The lithium battery 102 is firmly adsorbed by the negative pressure suction cup 703. After the adsorption is completed, the upper end cover 108 is pulled upward to pull the lithium battery 102 out of the storage box 100.

[0037] like Figure 1-Figure 9 As shown, a bottom pushing sac 600 is integrally formed inside the peripheral air intake pressure measuring box 101 located at the bottom of the storage box 100, and a second gas delivery pipe 601 is connected to the outside of the gas diversion box 106 through an electric control valve. One end of the second gas delivery pipe 601 away from the gas diversion box 106 passes through the outer walls of the storage box 100 and the peripheral air intake pressure measuring box 101 respectively and is connected to the bottom pushing sac 600.

[0038] Specifically, in the process of using the negative pressure suction cup 703 to absorb and drag the lithium battery 102, the electric control valve connected to the second gas delivery pipe 601 can be opened so that the gas sucked in by the two-way air pump 107 is reversely injected into the bottom pushing sac 600 through the second gas delivery pipe 601, causing the bottom pushing sac 600 to expand. When the bottom pushing sac 600 expands, the lithium battery 102 can be lifted upward, thereby accelerating the separation speed between the lithium battery 102 and the storage box 100, and assisting the staff to take the lithium battery 102 out of the storage box 100.

[0039] like Figure 4 As shown, the outside of the upper air intake pressure measuring box 109 is integrally formed with a soft inclined expansion claw plate 401, and the inner wall surface of the storage box 100 is integrally formed with an inclined snap-in groove 400. In the process of continuously conveying gas to the interior of the upper air intake pressure measuring box 109, the gas continuously enters the interior of the upper air intake pressure measuring box 109, and the gas is also continuously conveyed to the interior of the soft inclined expansion claw plate 401. When the gas continuously enters the interior of the soft inclined expansion claw plate 401, the soft inclined expansion claw plate 401 will expand. At the same time, the soft inclined expansion claw plate 401 will be snapped into the interior of the inclined snap-in groove 400 when the upper air intake pressure measuring box 109 is inserted into the interior of the storage box 100. When the soft inclined expansion claw plate 401 is snapped into the interior of the inclined snap-in groove 400, gas leakage can be reduced.

[0040] like Figure 6 As shown, an elastic film 500 is integrally formed inside the soft inclined expansion claw plate 401, a storage chamber is formed between the elastic film 500 and the soft inclined expansion claw plate 401, and the storage chamber is filled with magnetic powder 501. By filling the storage chamber with magnetic powder 501, when gas enters the soft inclined expansion claw plate 401, the gas can concentrate and push the magnetic powder 501 to move upward, so that the elastic film 500 in a scattered state is concentrated and pushed to the top position of the storage cavity, so that the magnetic powder 501 in a scattered state forms a whole. When forming a whole, the buckling stability between the upper air intake pressure measuring box 109, the upper end cover 108 and the storage box 100 can be further enhanced.

[0041] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to the prior art, in the present embodiment, the upper and lower, left and right, front and back sides of the lithium battery 102 are abutted by multiple peripheral air intake pressure measuring boxes 101 and upper air intake pressure measuring boxes 109, and a gas injection test is performed after the abutment. When the gas gradually enters the interior of the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109, if the surface where the lithium battery 102 abuts against the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 is not sealed enough, then the gas will leak out from these gaps, and the air pressure alarm sensor 105 will continuously monitor the air intake volume of the air intake valve 104, and alarm when the air intake volume is greater than the standard value, thereby detecting which surface of the lithium battery 102 currently has the phenomenon of insufficient sealing, and further locating the problem of insufficient sealing on that surface of the lithium battery 102.

[0042] Embodiment 2: Considering that during the air intake process, the contact between the lithium battery 102 and the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 is not so tight, once the gas leaks, it is easy to cause detection errors. In view of the above technical problems, the present application proposes the following technical solutions to solve the above technical problems, specifically:

[0043] like Figure 7-Figure 10 As shown, the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 are integrally formed with a wear-resistant expansion sealing rubber 201 on the side away from the storage box 100, and the interior of the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 are both provided with an air intake groove 200, and the air intake groove 200 is connected to the interior of the air intake valve 104.

[0044] Specifically, during use, when the air intake valve 104 transports gas to the interior of the peripheral air intake pressure gauge box 101 and the upper air intake pressure gauge box 109, the gas will enter the interior of the peripheral air intake pressure gauge box 101 and the interior of the air intake groove 200 at the same time. When the gas enters the interior of the air intake groove 200, it will be directly transported to the interior of the wear-resistant expansion sealing rubber 201. The wear-resistant expansion sealing rubber 201 is a high-toughness sealing rubber. When a large amount of gas continues to enter the interior of the wear-resistant expansion sealing rubber 201, the wear-resistant expansion sealing rubber 201 will expand. When the wear-resistant expansion sealing rubber 201 expands, it will further abut against the lithium battery 102. By strengthening the abutment with the lithium battery 102, the stability between the lithium battery 102 and the peripheral air intake pressure gauge box 101 is enhanced.

[0045] The technical scheme in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to embodiment one, in the present embodiment, in the process of continuously injecting gas into the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109, the gas entering the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 will be diverted to the interior of the wear-resistant expansion sealing rubber 201 through the air intake groove 200. When the gas continues to enter the wear-resistant expansion sealing rubber 201, the wear-resistant expansion sealing rubber 201 will expand. When the expansion occurs, the wear-resistant expansion sealing rubber 201 will further abut the lithium battery 102. When further abutting with the lithium battery 102, it can avoid the gas from leaking through the gap between the peripheral air intake pressure measuring box 101, the upper air intake pressure measuring box 109 and the lithium battery 102, thereby further ensuring the accuracy of the detection.

[0046] Embodiment 3: Considering that it is necessary to continuously inject gas into the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109 during use, during the continuous gas injection process, the gas will also be continuously diverted to the inside of the wear-resistant expansion sealing rubber 201. When the gas is continuously diverted to the inside of the wear-resistant expansion sealing rubber 201, it will cause the air pressure inside the wear-resistant expansion sealing rubber 201 to accumulate, thereby further causing the wear-resistant expansion sealing rubber 201 to over-expand. When the wear-resistant expansion sealing rubber 201 over-expands, it will not only squeeze the lithium battery 102, causing the lithium battery 102 to be damaged, but also may cause deformation of other shapes due to excessive expansion. Once the abnormal deformation occurs, secondary air leakage may occur. In view of the above technical problems, the present application proposes the following technical solutions to solve the above technical problems, specifically:

[0047] like Fig.10 As shown, a pull plate 301 is fixedly connected inside the wear-resistant expansion sealing rubber 201, and a plurality of pull ropes 300 are fixedly connected to the side of the pull plate 301 away from the wear-resistant expansion sealing rubber 201. The end of the pull rope 300 away from the wear-resistant expansion sealing rubber 201 is fixedly connected to the inner wall surface of the air intake groove 200.

[0048] Specifically, during use, when gas gradually enters the wear-resistant expansion sealing rubber 201 and the amount of gas gradually increases, the wear-resistant expansion sealing rubber 201 will be over-expanded. By setting the pull plate 301 and the pull rope 300, the pull plate 301 can always be pulled by the pull rope 300 when gas enters the wear-resistant expansion sealing rubber 201, and the pull plate 301 will pull the wear-resistant expansion sealing rubber 201 in, so that the surface of the wear-resistant expansion sealing rubber 201 close to the lithium battery 102 will not extend and expand excessively, so that more gas can always enter the interior of the peripheral air intake pressure measuring box 101 and the upper air intake pressure measuring box 109, so that when more gas enters the wear-resistant expansion sealing rubber 201, there will be no excessive anisotropic expansion, and the wear-resistant expansion sealing rubber 201 can be prevented from over-expanding and squeezing the lithium battery 102.

[0049] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to the second embodiment, in the present embodiment, the pull plate 301 and the wear-resistant expansion sealing rubber 201 are pulled by the pull rope 300, so that even when a large amount of gas enters the wear-resistant expansion sealing rubber 201, the side of the wear-resistant expansion sealing rubber 201 close to the lithium battery 102 will not undergo excessive abnormal expansion, thereby avoiding the abnormal expansion and causing air leakage. At the same time, the pull plate 301 is pulled by the pull rope 300 and will only expand and extend to the specified position, without causing excessive squeezing of the lithium battery 102.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A packaging device for testing the sealing performance of a lithium battery, comprising a storage box (100), characterized in that: The storage box (100) is clamped with an upper end cover (108), the inner wall surfaces and the bottom of the storage box (100) are fixedly connected with an outer peripheral air intake pressure measuring box (101), the upper end cover (108) is fixedly connected with an upper air intake pressure measuring box (109) on one side close to the storage box (100), and the outsides of the plurality of outer peripheral air intake pressure measuring boxes (101) and the upper air intake pressure measuring box (109) are all connected with an air intake valve (104), and the air intake valve (104) is connected to the outer peripheral air intake pressure measuring boxes (101) and the upper air intake pressure measuring boxes (109). An air pressure alarm sensor (105) is installed on the outside of the valve (104); one end of the air intake valve (104) away from the storage box (100) passes through the outer wall of the storage box (100) and is connected to a first gas delivery pipe (103); one end of the first gas delivery pipe (103) away from the air intake valve (104) is connected to a gas diversion box (106); and the outside of the gas diversion box (106) is connected to a two-way air pump (107).

2. The packaging device for lithium battery sealing detection according to claim 1, characterized in that: A wear-resistant expansion sealing rubber (201) is integrally formed on the side of the peripheral air intake pressure measuring box (101) and the upper air intake pressure measuring box (109) away from the storage box (100), and an air intake groove (200) is provided inside the peripheral air intake pressure measuring box (101) and the upper air intake pressure measuring box (109), and the air intake groove (200) is connected to the inside of the air intake valve (104).

3. A packaging device for lithium battery sealing detection according to claim 2, characterized in that: A pull plate (301) is fixedly connected to the inside of the wear-resistant expansion sealing rubber (201), and a plurality of pull ropes (300) are fixedly connected to the side of the pull plate (301) away from the wear-resistant expansion sealing rubber (201), and one end of the pull rope (300) away from the wear-resistant expansion sealing rubber (201) is fixedly connected to the inner wall surface of the air intake groove (200).

4. The packaging device for lithium battery sealing detection according to claim 3 is characterized in that: The outer portion of the upper air intake pressure measuring box (109) is integrally formed with a soft inclined expansion claw plate (401), and the inner wall surface of the storage box (100) is integrally formed with an inclined snap-fit ​​groove (400).

5. The packaging device for lithium battery sealing detection according to claim 4, characterized in that: An elastic film (500) is integrally formed inside the soft inclined expansion claw plate (401), a storage chamber is formed between the elastic film (500) and the soft inclined expansion claw plate (401), and the storage chamber is filled with magnetic powder (501).

6. The packaging device for lithium battery sealing detection according to claim 1, characterized in that: A bottom pushing sac (600) is integrally formed inside the peripheral air intake pressure measuring box (101) located at the bottom of the storage box (100), and the outside of the gas diversion box (106) is connected to a second gas delivery pipe (601) through an electric control valve, and one end of the second gas delivery pipe (601) away from the gas diversion box (106) passes through the outer walls of the storage box (100) and the peripheral air intake pressure measuring box (101) respectively and is connected to the bottom pushing sac (600).

7. The packaging device for lithium battery sealing detection according to claim 1, characterized in that: A plurality of positioning threaded holes (800) are provided on the outside of the upper end cover (108) and the upper surface of the storage box (100).

8. The packaging device for lithium battery sealing detection according to claim 1, characterized in that: The upper end cover (108) is connected to a pressure relief valve (900).

9. The packaging device for lithium battery sealing detection according to claim 1, characterized in that: A bottom suction cup (901) is installed at the bottom of the storage box (100).

10. The packaging device for lithium battery sealing detection according to claim 1, characterized in that: The air inlet of the bidirectional air pump (107) is connected to an adsorption diversion box (700), and the outside of the adsorption diversion box (700) is connected to two suction hoses (701). The side of the suction hose (701) away from the adsorption diversion box (700) is connected to a suction valve (702), and the end of the suction valve (702) away from the suction hose (701) passes through the outer wall of the upper end cover (108) and is connected to a negative pressure suction cup (703).

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