Lithium battery sealing performance detection device and production equipment thereof

Abstract

The utility model provides a lithium battery sealing performance detection device and production equipment thereof. The lithium battery sealing performance detection device comprises a container and a gas supply assembly, and further comprises a detection assembly, the detection assembly comprises a fixed seat, a cover plate and a sealing ring, a detection cavity and a sealing cavity which are communicated with each other are sequentially formed in the fixed seat, the sealing ring is clamped in the sealing cavity, the sealing ring is used for sleeving and sealing a lithium battery, the cover plate is arranged on the sealing ring and detachably connected with the fixed seat, and the cover plate is used for pressing and fixing the sealing ring on the sealing cavity; a detection through hole is formed in the cover plate, and the through hole is communicated with the sealing cavity; the gas inlet end of the gas supply assembly is communicated with the detection cavity, and the gas supply assembly is used for providing gas for the detection cavity. According to the device, the sealing detection of the lithium battery can be realized without additionally arranging a driving assembly and a fixed bracket, the structure is simple, the operation is simple, the equipment cost is low, an operator can independently replace the damaged fixed seat, the cover plate or the sealing ring, and the maintenance cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a lithium battery sealing detection device and production equipment thereof. Background Art

[0002] In the production process of lithium batteries, it is usually necessary to conduct sealing tests to avoid leakage in the produced lithium batteries.

[0003] For example, Chinese patent number CN 116164894 A discloses a lithium battery sealing detection device, and specifically discloses that the lithium battery sealing detection device includes a container, a clamp assembly and a high-pressure gas assembly, wherein the container is used to place a detection liquid; the clamp assembly is arranged above the container, the clamp assembly is used to fix the lithium battery, the top of the lithium battery has an opening, and the clamp assembly can move up and down along the height direction of the container so that the bottom of the lithium battery contacts the detection liquid in the container; the high-pressure gas assembly is sealed and connected to the opening, and the high-pressure gas assembly is used to input high-pressure gas into the lithium battery when the bottom of the lithium battery contacts the detection liquid in the container.

[0004] However, when the above-mentioned lithium battery sealing detection device is in use, it is necessary to control the clamp assembly to move up and down in the height direction of the container, which requires the additional installation of a driving assembly and a fixed bracket 12 to enable the installation bracket 4 to move along the height direction of the fixed bracket 12. Not only is the structure more complicated, but the operation is also more cumbersome and the cost is higher. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a lithium battery sealing detection device and production equipment that does not require the control of the movement of the clamp assembly, is simple to operate, has high detection efficiency, and has low equipment cost, and the operator can replace a damaged fixing seat, cover plate or sealing ring separately, thereby saving maintenance costs.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A lithium battery sealing detection device comprises a container and a gas supply component, and the lithium battery sealing detection device further comprises a detection component;

[0008] The detection assembly includes a fixing seat, a cover plate and a sealing ring. The fixing seat is formed with a connected detection cavity and a sealing cavity in sequence. The sealing ring is clamped in the sealing cavity. The sealing ring is used to sleeve a sealed lithium battery. The cover plate is arranged on the sealing ring and is detachably connected to the fixing seat. The cover plate is used to press and fix the sealing ring on the sealing cavity. The cover plate is formed with a detection through hole, and the detection through hole is connected to the sealing cavity.

[0009] The air inlet end of the air supply component is communicated with the detection cavity, and the air supply component is used to provide gas to the detection cavity.

[0010] In one embodiment, the sealing cavity is larger than the detection cavity, the sealing ring is adapted to the sealing cavity, and an installation cavity is formed in the sealing ring, and the installation cavity is used to mount a lithium battery.

[0011] In one embodiment, the cover plate is threadedly connected to the fixing seat.

[0012] In one embodiment, the detection component also includes a locking piece, the cover plate is also formed with a mounting hole, the locking piece passes through the mounting hole and the threaded hole in sequence, the fixing seat is formed with a threaded hole, the locking piece passes through the mounting hole and the threaded hole in sequence, and is screwed to the inner wall of the threaded hole.

[0013] In one embodiment, there are multiple locking members and multiple mounting holes.

[0014] In one embodiment, the mounting holes are evenly distributed on the fixing base; and / or,

[0015] The height of the sealing ring is equal to the height of the sealing cavity.

[0016] In one embodiment, the locking member is a bolt.

[0017] In one embodiment, the detection component also includes a connecting piece, which is arranged on one side of the detection cavity, and an air inlet is formed in the connecting piece, and the air inlet is connected to the detection cavity, and the air inlet end of the air inlet pipe of the air supply component is sealed in the air inlet.

[0018] In one embodiment, the connecting member and the fixing seat are an integrally formed structure; and / or,

[0019] The air inlet and the sealing cavity are respectively arranged on two opposite side walls of the fixing seat; and / or,

[0020] The air supply assembly includes the air intake pipe and a cylinder, and the cylinder is communicated with the air intake pipe.

[0021] A lithium battery production device comprises the lithium battery sealing detection device described in any one of the above embodiments.

[0022] Compared with the prior art, the utility model has at least the following advantages:

[0023] 1) Since a connected detection chamber and a sealing chamber are formed in sequence in the fixing seat, the lithium battery to be detected can be placed in the detection chamber and the sealing chamber. Since the sealing ring is clamped in the sealing chamber, the operator can disassemble and install the sealing ring. Since the sealing ring is used to sleeve the sealed lithium battery, the sealing ring can seal the outer wall of the lithium battery, so that the gas in the detection chamber can enter the interior of the lithium battery and then enter the sealing member of the lithium battery, effectively preventing the gas in the detection chamber from leaking from the sealing chamber and affecting the accuracy of the detection, that is, ensuring the normal progress of the sealing detection; and since the cover plate is arranged on the sealing ring and is detachably connected to the fixing seat, the cover plate can fix the sealing ring in the sealing chamber, which well ensures the sealing performance of the sealing ring and the lithium battery, and is convenient for the operator to disassemble and install the cover plate or the fixing seat. Since the cover plate A detection through hole is formed inside, and the detection through hole is connected with the sealing cavity, so that the operator can observe whether there is a leakage in the detection through hole; when in use, the operator first opens an opening in the lithium battery, then removes the cover plate and the sealing ring, then places the lithium battery into the detection cavity, so that the sealing part of the lithium battery is exposed in the sealing cavity, and then puts the sealing ring on the lithium battery, then installs the cover plate, and then immerses the fixed lithium battery and the detection component in the liquid of the container, then starts the air supply component, so that the gas of the air supply component can enter the detection cavity from the air inlet end, and then enter the interior of the lithium battery from the detection cavity, and finally judges its sealing performance according to whether bubbles are generated in the detection through hole. When there are bubbles in the detection through hole, the sealing performance is poor, and if there are no bubbles, the sealing performance is good, so as to complete the detection of the sealing of the lithium battery. Compared with the traditional sealing detection device, the present invention can realize the sealing detection of the lithium battery without the need to add a driving component and a fixed bracket. It is not only simple in structure and operation, but also has low equipment cost.

[0024] 2) In addition, since the fixing seat and the cover plate are detachably connected and the sealing ring is detachably arranged in the sealing chamber, it is convenient for the operator to replace the damaged fixing seat, cover plate or sealing ring separately, thereby saving maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of a lithium battery sealing detection device in one direction according to an embodiment of the utility model;

[0027] Figure 2 for Figure 1 A schematic structural diagram of the lithium battery sealing detection device in another direction shown;

[0028] Figure 3 A cross-sectional view of a lithium battery sealing detection device in one direction according to another embodiment of the utility model;

[0029] Figure 4 for Figure 3 A partial enlarged view shown in the middle.

[0030] Figure numerals: 10, lithium battery sealing detection device; 100, air supply assembly; 110, air inlet pipe; 111, air inlet end; 120, cylinder; 200, detection assembly; 210, fixing seat; 211, detection cavity; 212, sealing cavity; 213, threaded hole; 220, cover plate; 221, detection through hole; 222, mounting hole; 230, sealing ring; 240, locking piece; 250, connecting piece; 251, air inlet; 300, lithium battery. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0035] like Figures 1 to 3 As shown, a lithium battery sealing detection device 10 of an embodiment includes a container (not shown) and an air supply assembly 100, and the lithium battery sealing detection device 10 also includes a detection assembly 200; the detection assembly 200 includes a fixing seat 210, a cover plate 220 and a sealing ring 230, and the fixing seat 210 is sequentially formed with a connected detection cavity 211 and a sealing cavity 212, and the sealing ring 230 is clamped in the sealing cavity 212, and the sealing ring 230 is used to sleeve the sealed lithium battery 300, the cover plate 220 is arranged on the sealing ring 230 and is detachably connected to the fixing seat 210, the cover plate 220 is used to press and fix the sealing ring 230 on the sealing cavity 212, the cover plate 220 is formed with a detection through hole 221, and the detection through hole 221 is connected to the sealing cavity 212; the air inlet end 111 of the air supply component 100 is connected to the detection cavity 211, and the air supply component 100 is used to provide gas to the detection cavity 211.

[0036] It can be understood that the container is used to hold liquid so that the liquid can immerse the detection component 200 and the lithium battery 300 to be detected; since the fixed seat 210 is sequentially formed with a connected detection cavity 211 and a sealing cavity 212, the lithium battery 300 to be detected can be placed in the detection cavity 211 and the sealing cavity 212, and since the sealing ring 230 is detachably arranged in the sealing cavity 212, the operator can disassemble and assemble the sealing ring 230, and since the sealing ring 230 is used to sleeve the sealed lithium battery 300, the sealing ring 230 can seal the outer peripheral wall of the lithium battery 300, so that the gas in the detection cavity 211 can enter the interior of the lithium battery 300, and then enter the sealing component of the lithium battery 300, effectively blocking the gas in the detection cavity 211 from leaking from the sealing cavity 212 and affecting the accuracy of the detection, thereby ensuring the normal progress of the sealing detection.

[0037] It can also be understood that, since the cover plate 220 is arranged on the sealing ring 230 and is detachably connected to the fixing seat 210, the cover plate 220 can fix the sealing ring 230 in the sealing cavity 212, thereby ensuring the sealing performance of the sealing ring 230 and the lithium battery 300, and facilitating the operator to disassemble and assemble the cover plate 220 or the fixing seat 210. Furthermore, since a detection through hole 221 is formed in the cover plate 220, and the detection through hole 221 is connected to the sealing cavity 212, the operator can observe whether there is any leakage in the detection through hole 221.

[0038] During use, the operator first opens an opening in the lithium battery 300, then removes the cover plate 220 and the sealing ring 230, and then places the lithium battery 300 into the detection cavity 211, so that the sealing component of the lithium battery 300 is exposed in the sealing cavity 212, and then puts the sealing ring 230 on the lithium battery 300, and then installs the cover plate 220, and then immerses the fixed lithium battery 300 and the detection component 200 in the liquid of the container, and then starts the gas supply component 100, so that the gas of the gas supply component 100 can enter the detection cavity 211 from the air inlet end 111, and then enter the interior of the lithium battery 300 from the detection cavity 211, and finally judge its sealing performance based on whether bubbles are generated in the detection through hole 221. When there are bubbles in the detection through hole 221, the sealing performance is poor, and if there are no bubbles, the sealing performance is good, so as to complete the detection of the sealing performance of the lithium battery 300. Compared with the traditional sealing detection device, the present disclosure can realize the sealing detection of the lithium battery 300 without adding additional driving components and fixing brackets. It is not only simple in structure and operation, but also low in equipment cost.

[0039] In addition, since the fixing seat 210 and the cover plate 220 are detachably connected and the sealing ring 230 is detachably arranged in the sealing cavity 212, it is convenient for the operator to replace the individually damaged fixing seat 210, cover plate 220 or sealing ring 230, thereby saving maintenance costs.

[0040] like Figure 3 and Figure 4 As shown, in one embodiment, the sealing cavity 212 is larger than the detection cavity 211, the sealing ring 230 is adapted to the sealing cavity 212, and a mounting cavity is formed in the sealing ring 230, and the mounting cavity is used to sleeve the lithium battery 300. It can be understood that since the sealing cavity 212 is larger than the detection cavity 211, it is convenient for the operator to place the lithium battery 300 in the detection cavity 211, so that the sealing member of the lithium battery 300 can be well exposed in the sealing cavity 212, so that the operator can seal the lithium battery 300, and since the sealing ring 230 is formed with a mounting cavity, the mounting cavity is used to sleeve the lithium battery 300, so that the operator can sleeve the sealing ring 230 on the outer peripheral wall of the lithium battery 300 through the mounting cavity, thereby achieving the sealing of the lithium battery 300, effectively preventing the gas in the detection cavity 211 from leaking from the sealing cavity 212 and affecting the accuracy of the detection, thereby ensuring the normal progress of the sealing detection.

[0041] In order to realize the detachable connection between the cover plate 220 and the fixing seat 210, the cover plate 220 can be connected by snapping, plugging and threading. In one embodiment, the cover plate 220 and the fixing seat 210 are threadedly connected to realize the detachable connection between the cover plate 220 and the fixing seat 210.

[0042] like Figure 3 and Figure 4As shown, in one embodiment, the detection component 200 also includes a locking piece 240, the cover plate 220 is also formed with a mounting hole 222, the locking piece 240 passes through the mounting hole 222, the fixing seat 210 is formed with a threaded hole 213, the locking piece 240 passes through the mounting hole 222 and the threaded hole 213 in sequence, and is screwed to the inner wall of the threaded hole 213, so that the locking piece 240 can pass through the mounting hole 222 and the threaded hole 213 in sequence, and can be screwed to the inner wall of the threaded hole 213, thereby realizing the threaded connection between the cover plate 220 and the fixing seat 210.

[0043] In one embodiment, there are multiple locking members 240 and multiple mounting holes 222. It can be understood that by increasing the number of locking members 240 and mounting holes 222, the connection strength between the cover plate 220 and the fixing seat 210 is improved, and the detection component 200 is effectively prevented from falling off when immersed in the container.

[0044] In one of the embodiments, the mounting holes 222 are evenly distributed on the fixing base 210, so that the plurality of locking members 240 can be evenly distributed on the cover plate 220 and the fixing base 210, thereby ensuring the uniformity of each connection between the cover plate 220 and the fixing base 210, and effectively avoiding the phenomenon that the cover plate 220 and the fixing base 210 are easily detached due to local uneven connection when the detection component 200 is immersed in the container.

[0045] In one embodiment, the height of the sealing ring 230 is equal to the height of the sealing cavity 212, so that the sealing ring 230 does not protrude from the sealing cavity 212, thereby ensuring that the cover plate 220 can be evenly covered on the fixing seat 210. Not only is the structure compact, but it also well ensures the connection strength of the cover plate 220, the fixing seat 210 and the sealing ring 230, and better ensures the sealing effect of the sealing ring 230 on the outer peripheral wall of the lithium battery 300; it effectively avoids the sealing ring 230 protruding from the sealing cavity 212 to cause a gap between the cover plate 220 and the fixing seat 210, thereby affecting the connection strength and sealing of the cover plate 220, the fixing seat 210 and the sealing ring 230.

[0046] In one embodiment, the locking member 240 is a bolt to achieve a threaded connection between the locking member 240 and the threaded hole 213 .

[0047] In one embodiment, the detection component 200 also includes a connecting member 250, which is arranged on one side of the detection cavity 211, and an air inlet 251 is formed in the connecting member 250. The air inlet 251 is connected to the detection cavity 211, and the air inlet end 111 of the air inlet pipe 110 of the air supply component 100 is sealed in the air inlet 251.

[0048] It can be understood that since the air inlet 251 is connected to the detection chamber 211, the air inlet end 111 of the air inlet pipe 110 of the air supply component 100 is sealed in the air inlet 251, so that the gas of the air supply component 100 can enter the detection chamber 211 from the air inlet pipe 110, and enter the opening of the lithium battery 300 from the detection chamber 211, and then enter the interior of the lithium battery 300 from the opening of the lithium battery 300, and finally reach the sealing part of the lithium battery 300, ensuring the normal progress of the sealing detection.

[0049] In one embodiment, the connecting member 250 and the fixing base 210 are an integrally formed structure, which improves the connection strength between the connecting member 250 and the fixing base 210 and effectively prevents the cover plate 220 and the fixing base 210 from falling off during use, thereby increasing the service life of the detection component 200.

[0050] In one embodiment, the air inlet 251 and the sealed cavity 212 are respectively arranged on opposite side walls of the fixing seat 210. It can be understood that since the shape of the lithium battery 300 is usually square or cylindrical, in order to ensure that the gas can flow fully in the lithium battery 300, therefore, in the present disclosure, by arranging the air inlet 251 and the sealed cavity 212 on opposite sides of the fixing seat 210, and correspondingly opening an opening at the bottom of the lithium battery 300, the opening and the seal of the lithium battery 300 can be respectively located on both sides of the lithium battery 300 body, so that the bottom opening of the lithium battery 300 can correspond to the air inlet 251, and the seal of the lithium battery 300 can correspond to the sealed cavity 212, so as to ensure that the gas can flow fully in the lithium battery 300, thereby well ensuring the accuracy of the sealing detection.

[0051] like Figures 2 to 4 As shown, in one embodiment, the gas supply assembly 100 includes the gas inlet pipe 110 and the cylinder 120 , and the cylinder 120 is connected to the gas inlet pipe 110 to ensure that the gas supply assembly 100 can provide gas to the detection chamber 211 .

[0052] The present disclosure also provides a lithium battery 300 production device, including the lithium battery sealing detection device 10 described in any of the above embodiments. It can be understood that the lithium battery 300 production device also includes a packaging device, which is used to seal the lithium battery 300, and then the lithium battery sealing detection device 10 of the present disclosure is used to perform sealing detection on the lithium battery 300, which is not only simple in structure, but also has good detection accuracy.

[0053] Compared with the prior art, the utility model has at least the following advantages:

[0054] 1) Since the fixed seat 210 is sequentially formed with a connected detection chamber 211 and a sealing chamber 212, the lithium battery 300 to be detected can be placed in the detection chamber 211 and the sealing chamber 212. Since the sealing ring 230 is detachably arranged in the sealing chamber 212, the operator can disassemble and install the sealing ring 230. Since the sealing ring 230 is used to cover the sealed lithium battery 300, the sealing ring 230 can seal the outer peripheral wall of the lithium battery 300, so that the gas in the detection chamber 211 can enter the interior of the lithium battery 300. After entering the sealing member of the lithium battery 300, the gas in the ground detection chamber 211 is effectively blocked from leaking from the sealing chamber 212 to affect the accuracy of the detection, that is, to ensure the normal progress of the sealing detection; and because the cover plate 220 is arranged on the sealing ring 230 and is detachably connected to the fixing seat 210, the cover plate 220 can fix the sealing ring 230 in the sealing chamber 212, which well ensures the sealing performance of the sealing ring 230 and the lithium battery 300, and it is convenient for the operator to disassemble and install the cover plate 220 or the fixing seat 210, and Since the cover plate 220 is formed with a detection through hole 221, and the detection through hole 221 is connected to the sealing cavity 212, the operator can observe whether there is leakage in the detection through hole 221. When in use, the operator first opens an opening in the lithium battery 300, then removes the cover plate 220 and the sealing ring 230, and then places the lithium battery 300 into the detection cavity 211, so that the sealing part of the lithium battery 300 is exposed in the sealing cavity 212, and then puts the sealing ring 230 on the lithium battery 300, and then installs it. The cover plate 220 is then used to immerse the fixed lithium battery 300 and the detection component 200 in the liquid of the container. At this time, the gas supply component 100 is started so that the gas of the gas supply component 100 can enter the detection cavity 211 from the air inlet end 111, and then enter the interior of the lithium battery 300 from the detection cavity 211. Finally, the sealing performance is determined based on whether bubbles are generated in the detection through hole 221. When there are bubbles in the detection through hole 221, the sealing performance is poor, and if there are no bubbles, the sealing performance is good, so as to complete the sealing test of the lithium battery 300. Compared with the traditional sealing test device, the present invention can realize the sealing test of the lithium battery 300 without the need for additional drive components and fixed brackets. It is not only simple in structure and operation, but also has low equipment cost.

[0055] 2) In addition, since the fixing seat 210 and the cover plate 220 are detachably connected and the sealing ring 230 is detachably arranged in the sealing cavity 212, it is convenient for the operator to replace the individually damaged fixing seat 210, cover plate 220 or sealing ring 230, thereby saving maintenance costs.

[0056] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A lithium battery sealing detection device, comprising a container and a gas supply assembly, characterized in that: The lithium battery sealing detection device also includes a detection component; The detection assembly includes a fixing seat, a cover plate and a sealing ring. The fixing seat is formed with a connected detection cavity and a sealing cavity in sequence. The sealing ring is clamped in the sealing cavity. The sealing ring is used to sleeve a sealed lithium battery. The cover plate is arranged on the sealing ring and is detachably connected to the fixing seat. The cover plate is used to press and fix the sealing ring on the sealing cavity. The cover plate is formed with a detection through hole, and the detection through hole is connected to the sealing cavity. The air inlet end of the air supply component is communicated with the detection cavity, and the air supply component is used to provide gas to the detection cavity.

2. The lithium battery sealing detection device according to claim 1, characterized in that: The sealing cavity is larger than the detection cavity, the sealing ring is matched with the sealing cavity, and an installation cavity is formed in the sealing ring, and the installation cavity is used for sleeve-mounting a lithium battery.

3. The lithium battery sealing detection device according to claim 1, characterized in that: The cover plate is threadedly connected to the fixing seat.

4. The lithium battery sealing detection device according to claim 3, characterized in that: The detection component also includes a locking piece, the cover plate is further formed with a mounting hole, the fixing seat is formed with a threaded hole, the locking piece passes through the mounting hole and the threaded hole in sequence, and is screwed to the inner wall of the threaded hole.

5. The lithium battery sealing detection device according to claim 4, characterized in that: The number of the locking members is multiple, and the number of the mounting holes is multiple.

6. The lithium battery sealing detection device according to claim 5, characterized in that: The mounting holes are evenly distributed on the fixing base; and / or, The height of the sealing ring is equal to the height of the sealing cavity.

7. The lithium battery sealing detection device according to any one of claims 4 to 6, characterized in that: The locking member is a bolt.

8. The lithium battery sealing detection device according to claim 1, characterized in that: The detection component also includes a connecting piece, which is arranged on one side of the detection cavity. An air inlet is formed in the connecting piece and is connected to the detection cavity. The air inlet end of the air inlet pipe of the air supply component is sealed in the air inlet.

9. The lithium battery sealing detection device according to claim 8, characterized in that: The connecting member and the fixing seat are an integrally formed structure; and / or, The air inlet and the sealing cavity are respectively arranged on two opposite side walls of the fixing seat; and / or, The air supply assembly includes the air intake pipe and a cylinder, and the cylinder is communicated with the air intake pipe.

10. A lithium battery production equipment, characterized in that: A lithium battery sealing detection device comprising any one of claims 1 to 9.

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