Sealing nail pressing structure and battery production equipment

Abstract

The embodiment of the utility model provides a sealing nail pressing structure and battery production equipment, and relates to the technical field of battery production. The sealing nail pressing structure comprises a battery cell transferring device and a nail pressing mechanism device, the nail pressing mechanism device comprises a nail pressing mechanism and a driving mechanism, the driving mechanism and the nail pressing mechanism are mounted on the battery cell transferring device, and the driving mechanism is in transmission connection with the nail pressing mechanism; the battery cell transferring device is provided with a battery cell fixing mechanism, a to-be-welded battery cell is mounted on the battery cell fixing mechanism, the nail pressing mechanism is movably arranged in a liquid injection hole of the to-be-welded battery cell, and a sealing nail is fixed in the liquid injection hole of the to-be-welded battery cell through the nail pressing mechanism. The nail pressing structure of the sealing nail can achieve the technical effect of improving the production efficiency of the battery cell.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery production, in particular to a sealing nail pressing structure and a battery production device. BACKGROUND

[0002] At present, in order to adapt to the continuous improvement of the energy density of the battery cell, the thickness of the battery cell shell applied at present is becoming thinner and thinner, from the original 1.0 mm to 0.5 mm, and is developing in the direction of thinner (for example: 0.35 mm, 0.3 mm, etc.), collectively referred to as thin-walled battery cell. In addition to improving the energy density of the battery cell, the thin-walled battery cell can also bring a more concise arrangement scheme and a better thermal management effect, because the tab position of the thin-walled battery cell is on the side, which can be compatible with the upper and lower two-layer water cooling systems. Based on the above three factors, the thin-walled battery cell is the future industry development trend and is gradually selected by domestic and foreign mainstream new energy vehicles.

[0003] Generally, in order to ensure the laser welding quality of the sealing nail, the concentricity and height difference of the sealing aluminum nail and the liquid injection hole must be strictly controlled. At present, the following methods are mainly used: single sealing nail concentricity 2D visual detection, sealing nail concentricity 2D visual + step 2D detection, etc. However, although the visual detection scheme provided is helpful for detecting the problems such as nail deviation and nail warping in actual production, it cannot solve the problems of nail deviation and nail warping, and there is still a high defective rate and high cost, which further affects the battery production efficiency. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the application is to provide a sealing nail pressing structure and a battery production device, which can realize the technical effect of improving the battery cell production efficiency.

[0005] In a first aspect, the embodiment of the application provides a sealing nail pressing structure, which comprises a battery cell transfer device and a nail pressing mechanism device.

[0006] The nail pressing mechanism device comprises a nail pressing mechanism and a driving mechanism, the driving mechanism and the nail pressing mechanism are installed on the battery cell transfer device, and the driving mechanism is in transmission connection with the nail pressing mechanism.

[0007] The battery cell transfer device is provided with a battery cell fixing mechanism, a to-be-welded battery cell is installed on the battery cell fixing mechanism, the nail pressing mechanism is movably arranged at the liquid injection hole of the to-be-welded battery cell, and the sealing nail is fixed on the liquid injection hole of the to-be-welded battery cell through the nail pressing mechanism.

[0008] In the implementation process, the nail pressing mechanism device is installed on the battery cell transfer device, and can be moved on different battery cell production stations through the battery cell transfer device; the to-be-welded battery cell is fixedly installed on the battery cell transfer device through the battery cell fixing mechanism, and cooperates with the nail pressing mechanism to ensure the matching accuracy of the sealing nail and the liquid injection hole of the to-be-welded battery cell during the movement of the to-be-welded battery cell, avoid the occurrence of adverse conditions such as nail deviation and nail warping of the sealing nail, ensure the accuracy of subsequent sealing nail welding, improve the yield of the battery cell, and effectively improve the production efficiency of the battery cell; thus, the sealing nail pressing structure can realize the technical effect of improving the production efficiency of the battery cell.

[0009] Further, the nail pressing mechanism is provided with a welding avoidance groove, and when the nail pressing mechanism fixes the sealing nail to the liquid injection hole of the to-be-welded battery cell, the nail pressing mechanism is in contact with the outer surface of the to-be-welded battery cell and the outer surface of the sealing nail respectively, and the welding avoidance groove is located at the edge profile of the liquid injection hole.

[0010] In the implementation process, the nail pressing mechanism is designed to avoid contact with the welding area through the welding avoidance groove, so as to avoid the pollution of the nail pressing mechanism to the welding area when the nail pressing mechanism presses the sealing nail, and ensure the cleanliness during the welding of the sealing nail.

[0011] Further, the nail pressing mechanism is a Y-shaped nail pressing mechanism.

[0012] In the implementation process, the structure of the nail pressing mechanism is Y-shaped, so that enough space is reserved for laser pre-point welding, and the welding efficiency is ensured.

[0013] Further, the nail pressing mechanism device further comprises a nail pressing mounting plate, the nail pressing mounting plate is installed on the battery cell transfer device, and the nail pressing mechanism and the driving mechanism are installed on the nail pressing mounting plate.

[0014] Further, the battery cell transfer device further comprises a reference plate, the battery cell fixing mechanism is installed on the reference plate, and the reference plate is matched with the nail pressing mounting plate.

[0015] Further, the sealing nail pressing structure further comprises an embedding and clamping mechanism, and the reference plate is fixedly arranged with the nail pressing mounting plate through the embedding and clamping mechanism.

[0016] In the implementation process, the reference plate is fixedly arranged with the nail pressing mounting plate through the embedding and clamping mechanism, so as to ensure that the nail pressing mechanism and the to-be-welded battery cell are on the same reference, and do not affect the actual pressing and welding effect; thus, the embedding and clamping structure ensures that the nail pressing structure and the battery cell are on the same fixing plate, a unified reference is adopted, and the pressing accuracy and welding reliability are ensured.

[0017] Further, the sealing nail pressing structure further comprises a guide rail, and the electric core moving device is slidably installed on the guide rail.

[0018] In the implementation process, the electric core moving device can move conveniently between different stations through the guide rail. For example, the electric core moving device can move back and forth between the nail pressing station and the pre-welding station along the guide rail according to actual needs.

[0019] Further, the sealing nail pressing structure further comprises a driving module, and the driving module is arranged in matching with the guide rail and the electric core moving device.

[0020] In the implementation process, the electric core moving device is driven to move on the guide rail by the driving module.

[0021] Further, the sealing nail pressing structure further comprises a controller, and the controller is installed on the electric core moving device and electrically connected with the driving mechanism.

[0022] In the implementation process, the driving mechanism is controlled by the controller, so as to control the nail pressing mechanism to press the sealing nail.

[0023] In a second aspect, the application provides a battery production equipment comprising the sealing nail pressing structure according to any one of the first aspect.

[0024] Other features and advantages of the application will be described in the following description, or can be learned from the description, or can be determined without doubt, or can be known by implementing the above-mentioned technology.

[0025] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments of the application. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 The structure schematic diagram of the to-be-welded electric core and the injection hole and the sealing nail provided by the embodiments of the application is shown in the following figure;

[0028] Figure 2 The structure schematic diagram of the sealing nail pressing structure provided by the embodiments of the application is shown in the following figure;

[0029] Figure 3A structure schematic diagram of the nail pressing mechanism and the to-be-welded battery cell provided by the embodiment of the present application is shown in the figure.

[0030] Figure 4 A structure schematic diagram of the nail pressing mechanism provided by the embodiment of the present application is shown in the figure.

[0031] The figure shows: a to-be-welded battery cell 10; a liquid injection hole 11; a sealing nail 12; a nail pressing mechanism 100; a welding avoidance groove 110; a nail pressing installation plate 120; a driving mechanism 200; a battery cell transfer device 300; a battery cell fixing mechanism 310; a reference plate 320; a guide rail 330. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0033] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0034] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. Those skilled in the art can understand the specific meaning of these terms in the present application according to the specific situation.

[0035] In addition, the terms "mount", "set", "provided with", "connect", "connect" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or point connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection between two devices, elements or components. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0036] In addition, the terms "first", "second", and the like are mainly used to distinguish different devices, elements or components (the specific types and configurations can be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "a plurality" is two or more.

[0037] Please refer to Figure 1 , Figure 1 The structure schematic diagram of the to-be-welded battery cell 10 and the liquid injection hole 11 and the sealing nail 12 provided by the embodiment of the present application; wherein the to-be-welded battery cell is taken as an example to be described by taking a thin-walled long aluminum shell battery cell, which is only taken as an example and is not limited, and the to-be-welded battery cell can also be other types of battery cells, which will not be described here.

[0038] Optionally, the sealing nail 12 includes a sealing aluminum nail and a glue nail, wherein the glue nail is sleeved on the liquid injection hole 11, and the sealing aluminum nail is arranged at the end of the liquid injection hole 11, and the welding sealing is realized through the sealing aluminum nail.

[0039] Generally, as Figure 1 indicated, in general, after the liquid injection and formation activation process, the to-be-welded battery cell 10 needs to be welded and sealed by using the sealing nail 12, and the laser annular butt welding method is used between the sealing nail 12 and the battery cell top cover where the liquid injection hole 11 is located; in order to ensure the laser welding quality of the sealing nail, the concentricity and height difference of the sealing aluminum nail and the liquid injection hole must be strictly controlled, and currently the following methods are mainly used:

[0040] The first is 2D visual detection of the concentricity of the sealing nail: the feature parameters of the feature patterns in the 2D image obtained by the 2D image acquisition device are used to control the assembly of the sealing nail by the assembly device, which can improve the assembly position accuracy, thereby improving the sealing performance of the battery and the quality of the battery, and specifically: sending a 2D image acquisition instruction to the image acquisition device, receiving the image returned by the image acquisition device, identifying the feature patterns in the image, obtaining the feature parameters corresponding to the assembly type according to the feature patterns, calculating the offset of the feature parameters and the reference parameters, and sending the assembly control instruction to the assembly device corresponding to the assembly type according to the offset, so as to calculate and determine the assembly position of the sealing nail; when detecting the assembly of the sealing nail, the 2D camera is mainly used to collect the image, and the concentricity of the sealing nail and the liquid injection hole is detected through the image information, and if the sealing nail and the liquid injection hole are not concentric, it is determined that the assembly is poor;

[0041] The second is the sealing nail concentricity 2D vision + step difference 2D detection: the battery sealing nail assembly detection device comprises a laser pen, a mechanical cantilever, a 2D image acquisition device, a camera fixing plate, a driving device and a base, the base has a base air slot, and the feature of the sealing nail is located below the base air slot. Specifically, at least one light source is added based on the original single information source received by the camera, the light source projects light on the sealing nail, so that the original single information source collected by the camera becomes multi-source information. According to the multi-source information (2D image), the relative position of the sealing nail and the battery end face and the height position information of the sealing nail can be judged. In this way, in the detection process, not only can the sealing nail concentricity meet the requirements, but also the horizontal plane of the sealing nail head can be kept consistent with the battery end face in height to some extent, so as to avoid the occurrence of nail buckling; in addition to the detection of the planar concentricity, the step difference 2D detection of the sealing nail is also added to detect the adverse nail and the buckling nail and other adverse conditions.

[0042] However, whether it is the first scheme or the second scheme, in the sealing nail welding process, there are four processes in turn: ① laser cleaning on the edge of the top cover liquid injection hole → ② sealing nail installation → ③ sealing nail pre-welding → ④ sealing nail full welding; among them, two important process links are involved: ② sealing nail installation, ③ sealing nail pre-welding; it is found in actual production that even if the sealing nail installation station assembly concentricity detection is qualified, but after moving to the pre-welding station, the concentricity and height difference cannot be guaranteed to be qualified; even if the sealing nail moves to the pre-welding station and the assembly detection is qualified, it cannot guarantee that the pre-welding effect is OK; thus, it is easy to cause the sealing nail to deviate and tilt, and in the extreme case, the sealing nail is easy to crack, which not only greatly increases the production cost, but also affects the production efficiency of the battery cell.

[0043] In order to solve the above technical problems, the sealing nail pressing structure and the battery production equipment provided by the embodiments of the present application can be applied to the sealing nail welding process in the battery cell production; please see Figures 2 to 4 , Figure 2 The structural schematic diagram of the sealing nail pressing structure provided by the embodiments of the present application is provided, Figure 3 The structural schematic diagram of the pressing nail mechanism and the to-be-welded battery cell provided by the embodiments of the present application is provided, Figure 4 The structural schematic diagram of the pressing nail mechanism provided by the embodiments of the present application is provided; the sealing nail pressing structure comprises a battery cell moving device and a pressing nail mechanism device;

[0044] Exemplarily, the pressing nail mechanism device comprises a pressing nail mechanism 100 and a driving mechanism 200, the driving mechanism 200 and the pressing nail mechanism 100 are installed on the battery cell moving device 300, and the driving mechanism 200 is in transmission connection with the pressing nail mechanism 100;

[0045] Exemplarily, the driving mechanism 200 can drive the pressing nail mechanism 100, so that the pressing nail mechanism 100 can press the sealing nail or release the sealing nail.

[0046] Exemplarily, the electric core transfer device 300 is provided with an electric core fixing mechanism 310, the electric core to be welded 10 is installed on the electric core fixing mechanism 310, and the pressing nail mechanism 100 is movably arranged on the liquid injection hole of the electric core to be welded 10, and the sealing nail is fixed on the liquid injection hole of the electric core to be welded 10 through the pressing nail mechanism 100.

[0047] Exemplarily, the pressing nail mechanism 100 device is installed on the electric core transfer device 300, and the electric core transfer device 300 can move on different electric core production stations; the electric core to be welded 10 is fixedly installed on the electric core transfer device 300 through the electric core fixing mechanism 310, and cooperates with the pressing nail mechanism 100 to ensure the matching accuracy of the sealing nail and the liquid injection hole of the electric core to be welded 10 in the moving process of the electric core to be welded 10, so as to avoid the bad conditions such as nail deviation and nail warping of the sealing nail, thereby ensuring the accuracy of subsequent sealing nail welding, improving the electric core yield, and effectively improving the electric core production efficiency.

[0048] Exemplarily, the pressing nail mechanism 100 is provided with a welding avoidance groove 110, when the pressing nail mechanism 100 fixes the sealing nail on the liquid injection hole 11 of the electric core to be welded 10, the pressing nail mechanism 100 respectively contacts the outer surface of the electric core to be welded 10 and the outer surface of the sealing nail, and the welding avoidance groove 110 is located at the edge profile of the liquid injection hole 11.

[0049] Exemplarily, the pressing nail mechanism 100 is designed to avoid the contact between the pressing nail mechanism 100 and the welding area when the pressing nail mechanism 100 presses the sealing nail, thereby avoiding the pollution of the welding area by the pressing nail mechanism 100, and ensuring the cleanliness during the welding of the sealing nail.

[0050] In some embodiments, the material of the pressing nail mechanism 100 can be purple copper, so as to avoid the abrasion of the sealing nail by the pressing nail mechanism.

[0051] Exemplarily, the pressing nail mechanism 100 is a Y-shaped pressing nail mechanism.

[0052] Exemplarily, the structure of the pressing nail mechanism 100 is Y-shaped, so that enough space can be reserved for laser pre-point welding, and the welding efficiency is ensured.

[0053] Optionally, the Y-shaped pressing nail mechanism can adopt 3-point or 4-point pre-welding.

[0054] Exemplarily, the pressing nail mechanism 100 device further includes a pressing nail mounting plate 120, the pressing nail mounting plate 120 is installed on the electric core transfer device 300, and the pressing nail mechanism 100 and the driving mechanism 200 are installed on the pressing nail mounting plate 120.

[0055] Exemplarily, the electric core transfer device arrangement further comprises a reference plate 320, the electric core fixing mechanism 310 is installed on the reference plate 320, and the reference plate 320 is arranged in matching with the nail mounting plate 120.

[0056] Exemplarily, the sealing nail pressing structure further comprises an embedding and clamping mechanism, and the reference plate 320 is fixedly arranged with the nail mounting plate 120 through the embedding and clamping mechanism.

[0057] Exemplarily, the reference plate is fixedly arranged with the nail mounting plate through the embedding and clamping mechanism, so as to ensure that the nail mechanism 100 and the electric core to be welded are on the same reference, and do not affect the actual pressing and welding effect; thus, through the embedding and clamping mechanism, the nail mechanism 100 and the electric core are ensured to be on the same fixing plate, a unified reference is adopted, and the pressing precision and welding reliability are ensured.

[0058] Exemplarily, the sealing nail pressing structure further comprises a guide rail 330, and the electric core transfer device 300 is slidably installed on the guide rail 330.

[0059] Exemplarily, through the arrangement of the guide rail 330, the electric core transfer device 300 can be conveniently moved between different stations; for example, the electric core transfer device 300 can be moved back and forth between the nail mounting station and the pre-welding station along the guide rail according to actual needs.

[0060] Exemplarily, the sealing nail pressing structure further comprises a driving module, and the driving module is arranged in matching with the guide rail 330 and the electric core transfer device 300 respectively.

[0061] Exemplarily, the electric core transfer device is driven to move on the guide rail through the driving module.

[0062] Exemplarily, the sealing nail pressing structure further comprises a controller, the controller is installed on the electric core transfer device 300, and the controller is electrically connected with the driving mechanism 200.

[0063] Exemplarily, the application provides a battery production equipment, which comprises Figures 2 to 4 The sealing nail pressing structure of any one.

[0064] In some implementation scenarios, the sealing nail pressing structure provided by the application embodiment can solve the problems that the sealing nail is affected by movement and shaking when being placed in the liquid injection hole of the electric core to be welded, and the risk of nail buckling caused by the local force of the sealing nail during laser welding, avoid the problems of pinhole and crack of the electric core after the sealing nail welding is completed, and effectively improve the yield rate and production efficiency of the electric core.

[0065] Exemplarily, the sealing nail welding process of the electric core to be welded is as follows:

[0066] ① Laser cleaning → ② Sealing nail mounting → ③ Sealing nail pre-welding → ④ Sealing nail full welding;

[0067] In a general production scheme, during the whole process from nailing the sealing nail to pre-welding the sealing nail, the nail mechanism presses the sealing nail, which cannot solve the problems of nail deviation and nail warping caused by factors such as cell movement, local force of laser spot welding, and the effect of protective gas blowing to the laser.

[0068] The sealing nail pressing structure provided by the embodiments of the present application increases the nail pressing mechanism. After the sealing nail is nailed, the nail pressing mechanism performs pressure bonding on the sealing nail according to action instructions, position compensation and other information, and follows the movement until the pre-welding of the sealing nail is completed. The nail pressing mechanism can adjust the position and the pressure according to the actual situation; the action flow of the nail pressing mechanism is as follows:

[0069] Nail pressing flow: safe original position → mechanism rising → approaching the sealing nail of the cell (X direction) → mechanism descending → pressing the sealing nail;

[0070] Backflow process: mechanism rising → moving away from the sealing nail of the cell (X direction) → mechanism descending → safe original position;

[0071] The whole nail pressing mechanism adopts a following strategy and is integrated with the cell moving device as a whole, which can move back and forth along the guide rail between the nailing station and the pre-welding station according to the actual needs.

[0072] Exemplarily, the sealing nail pressing structure provided by the embodiments of the present application can be modularized, universal and flexible, and is suitable for different specifications of cells. Moreover, the sealing nail pressing structure is convenient for welding process DOE verification, ensures the welding quality, and makes the cells successfully pass through the cell vibration test, the whole package vibration test and the whole vehicle driving endurance test, so as to truly improve the reliability of the product;

[0073] By applying the sealing nail pressing structure, during the welding process of the sealing nail, the nail is directly pressed after being nailed, and followed until the pre-spot welding is completed, so that the problems of nail deviation and nail warping caused by factors such as cell movement, local force of laser spot welding, and the effect of protective gas blowing to the laser can be completely eliminated, and the sealing nail welding zero defect is truly achieved. The welding process DOE verification can be conveniently and quickly carried out, the product development verification period is shortened, and the cells can successfully pass through the cell vibration test, the whole package vibration test and the whole vehicle driving endurance test. The risk of leakage of the cell after driving vibration is reduced to 0, the safety hidden danger caused by the shell leakage of the cell after dynamic vibration after being packaged is completely avoided, and the application safety of the cell is greatly improved.

[0074] In all embodiments of the present application, "big", "small" are relative, "more", "less" are relative, "up", "down" are relative, and the description of such relative terms will not be described again in the embodiments of the present application.

[0075] It should be understood that, throughout the specification, "in an embodiment", "in the embodiment" or "as an optional implementation" mentioned in the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in an embodiment", "in the embodiment" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0076] In various embodiments of the present application, it should be understood that the size of the sequence number of each process described above does not mean the inevitable sequence of execution order, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0077] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A staple sealing and crimping structure, comprising: The device comprises a cell transfer device and a nail pressing mechanism device; The nail pressing mechanism device comprises a nail pressing mechanism and a driving mechanism, the driving mechanism and the nail pressing mechanism are installed on the cell transfer device, and the driving mechanism is in transmission connection with the nail pressing mechanism. The cell transfer device is provided with a cell fixing mechanism, the cell to be welded is installed on the cell fixing mechanism, the nail pressing mechanism is movably arranged on the liquid injection hole of the cell to be welded, and the sealing nail is fixed on the liquid injection hole of the cell to be welded through the nail pressing mechanism.

2. The seal-staking structure of claim 1, wherein The nail pressing mechanism is provided with a welding avoidance groove, when the nail pressing mechanism fixes the sealing nail on the liquid injection hole of the cell to be welded, the nail pressing mechanism is in contact with the outer surface of the cell to be welded and the outer surface of the sealing nail respectively, and the welding avoidance groove is located at the edge contour of the liquid injection hole.

3. The seal spike press spike structure of claim 1 or 2, wherein, The nail pressing mechanism is a Y-shaped nail pressing mechanism.

4. The seal-staking structure of claim 1, wherein The nail pressing mechanism device further comprises a nail pressing installation plate, the nail pressing installation plate is installed on the cell transfer device, and the nail pressing mechanism and the driving mechanism are installed on the nail pressing installation plate.

5. The seal-staking structure of claim 4, wherein The cell transfer device further comprises a reference plate, the cell fixing mechanism is installed on the reference plate, and the reference plate is matched with the nail pressing installation plate.

6. The seal-staking structure of claim 5, wherein The sealing nail pressing structure further comprises an embedding and clamping mechanism, the reference plate is fixedly arranged with the nail pressing installation plate through the embedding and clamping mechanism.

7. The seal-staking structure of claim 1, wherein The sealing nail pressing structure further comprises a guide rail, and the cell transfer device is slidably installed on the guide rail.

8. The seal-staking structure of claim 7, wherein The sealing nail pressing structure further comprises a driving module, and the driving module is matched with the guide rail and the cell transfer device respectively.

9. The seal-staking structure of claim 1, wherein The sealing nail pressing structure further comprises a controller, the controller is installed on the cell transfer device, and the controller is electrically connected with the driving mechanism.

10. A battery production apparatus characterized by comprising: The device comprises a sealing nail pressing structure as claimed in any one of claims 1 to 9.

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