Nail pressing device, liquid injection equipment and battery production system

Abstract

The utility model provides a nail pressing device, liquid injection equipment and a battery production system. The nail pressing device comprises a mounting frame, a pressure applying part, a first driving part and an elastic part, and the pressure applying part is movably connected to the mounting frame in the first direction. The first driving part is connected to the mounting frame and comprises a driver and a cam, and the driver is connected to the cam and used for driving the cam to rotate. The elastic part is connected to the mounting frame and the pressure applying part, the elastic part is used for applying elastic force to the pressure applying part so that the pressure applying part can abut against the cam, and the pressure applying part is configured to move in the first direction when the cam rotates. According to the invention, the nail pressing yield of the nail pressing device can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a nail pressing device, a liquid injection device and a battery production system. Background Art

[0002] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] In the production process of batteries, after the electrolyte is injected into the battery cell through the injection hole, a sealing nail needs to be installed in the injection hole through a nail pressing device to prevent the electrolyte inside the battery cell from leaking. The nail pressing yield of the nail pressing device will directly affect the economic benefits of the battery. Therefore, how to effectively improve the nail pressing yield of the nail pressing device is an urgent problem to be solved in battery technology. Utility Model Content

[0004] In view of the above problems, the present application provides a nail pressing device, a liquid injection device and a battery production system, which can effectively improve the nail pressing yield of the nail pressing device.

[0005] In a first aspect, an embodiment of the present application provides a nail pressing device, which includes a mounting frame, a pressure component, a first driving component and an elastic component, wherein the pressure component is movably connected to the mounting frame along a first direction. The first driving component is connected to the mounting frame, and the first driving component includes a driver and a cam, and the driver is connected to the cam and is used to drive the cam to rotate. The elastic component is connected to the mounting frame and the pressure component, and the elastic component is used to apply elastic force to the pressure component so that the pressure component and the cam are against each other, and the pressure component is configured to move along the first direction when the cam rotates.

[0006] The above technical solution realizes rapid linear movement of the pressure component along the first direction through the coordinated work between the first driving component and the elastic component, so that the pressure component can quickly and continuously perform multiple-frequency nail pressing operations, the working cycle is significantly shortened, and the frequency of nail pressing per unit time is greatly improved, so that the success rate of qualified sealing nails pressed into the injection hole is improved. What is more noteworthy is that the efficient multiple-frequency nail pressing operation of the pressure component enables the device to accurately press the sealing nail into the injection hole even when dealing with a certain degree of skewness. Overall, the nail pressing device of the above technical solution can effectively improve the nail pressing yield of the nail pressing device.

[0007] In some embodiments of the first aspect, the nail pressing device further comprises a positioning component, the positioning component is connected to the mounting frame, and a side of the positioning component away from the mounting frame is used to abut against the battery cell. The positioning component is provided with an avoidance hole, the avoidance hole penetrates the positioning component along the first direction, and at least a portion of the pressure applying component is movably inserted into the avoidance hole.

[0008] The above technical solution can not only improve the positioning accuracy and positioning efficiency of the nail pressing device by providing a positioning component, but also improve the stability and reliability of the entire nail pressing operation process, thereby further improving the nail pressing yield of the nail pressing device.

[0009] In some embodiments of the first aspect, the positioning component includes a buffer portion of the main body, the buffer portion is connected to a side of the main body away from the mounting frame, and the stiffness of the buffer portion is smaller than the stiffness of the main body.

[0010] The above technical solution sets the positioning component to include a main body and a buffer part. The main body provides a solid support to ensure the stability and reliability of the positioning component during the entire nail pressing process. At the same time, the buffer part, with its low stiffness characteristics, effectively reduces the mechanical impact and potential damage to the battery cell. In addition, the flexible structure of the buffer part allows fine-tuning of the positioning, thereby greatly improving the positioning accuracy. In this way, the structural stability and operational reliability of the positioning component are cleverly balanced.

[0011] In some embodiments of the first aspect, the cam includes a wheel body and a plurality of protrusions, the protrusions protrude from a circumferential side wall of the wheel body, and the plurality of protrusions are spaced apart along the circumference of the wheel body.

[0012] The above technical solution can improve the nail pressing rhythm of the nail pressing device by arranging a plurality of convex parts on the cam, thereby facilitating improving the nail pressing efficiency of the nail pressing device.

[0013] In some embodiments of the first aspect, the cam further comprises a plurality of recessed portions, the recessed portions being recessed relative to a circumferential side wall of the wheel body, and the plurality of recessed portions and the plurality of convex portions being alternately distributed along the circumference of the wheel body.

[0014] The above technical solution can increase the difference between the high point and the low point of the cam by introducing the recess. In other words, it can increase the amplitude of the cam, which is beneficial to increase the pressure applied by the pressure component to the sealing nail, thereby improving the nail pressing effect of the nail pressing device.

[0015] In some embodiments of the first aspect, the pressure-applying component includes a body and a roller, the roller is connected to the body and abuts against the cam, the roller is configured to rotate when the cam rotates, and a rotation axis of the roller is parallel to a rotation axis of the cam.

[0016] The above technical solution can reduce the direct friction between the pressure component and the cam by introducing the roller, thereby reducing the wear of the contact part between the pressure component and the cam, which can not only extend the service life of the nail pressing device and reduce maintenance costs, but also improve the stability of the nail pressing operation of the nail pressing device.

[0017] In some embodiments of the first aspect, the mounting frame includes a first bracket, the first bracket includes a first part and a second part, the pressure component and the first driving component are connected to the first part, the second part is provided with a guide hole, the guide hole passes through the second part along a first direction, and at least a part of the pressure component can be movably inserted into the guide hole.

[0018] The above technical solution divides the first bracket into structures according to different functions. The first part is used to carry the pressure component and the first driving component, and the second part is used to provide guidance for the pressure component. This can not only improve the overall structural stability of the nail pressing device, but also optimize the accuracy of the linear movement of the pressure component along the first direction.

[0019] In some embodiments of the first aspect, the nail pressing device further comprises a first slide rail assembly, the first slide rail assembly is extended along the first direction, and the pressure component is movably connected to the first part through the first slide rail assembly. The slide rail assembly has high sliding accuracy and smoothness, can improve the consistency and accuracy of each nail pressing operation of the pressure component, and can reduce vibration and deviation during the movement of the pressure component.

[0020] In some embodiments of the first aspect, the mounting bracket further includes a second bracket, and the first bracket is movably connected to the second bracket along the first direction.

[0021] The movable design of the first bracket in the above technical solution increases the operational flexibility of the nail pressing device, enabling it to easily adapt to work requirements at different heights or angles, thereby significantly improving the adaptability and flexibility of the nail pressing device.

[0022] In some embodiments of the first aspect, the nail pressing device further includes a second slide rail assembly, the second slide rail assembly is extended along the first direction, and the first bracket is movably connected to the second bracket through the second slide rail assembly. The slide rail assembly has high sliding accuracy and smoothness, can improve the consistency and accuracy of each movement of the first bracket, and can reduce vibration and deviation during the movement of the first bracket.

[0023] In some embodiments of the first aspect, the nail pressing device further includes a second driving component, which is connected to the first bracket and is used to drive the first bracket to move along the first direction.

[0024] By providing a second driving component to drive the first bracket to move, the position of the first bracket can be adjusted quickly and accurately, which reduces the work preparation time and improves the overall operating efficiency of the nail pressing device.

[0025] In some embodiments of the first aspect, the cam is provided with a plurality of openings, the openings extending along the axial direction of the cam, and the plurality of openings are arranged at intervals along the circumferential direction of the cam.

[0026] The above technical solution provides an opening on the cam. On the one hand, during the assembly process of the cam, the relevant assembly tools can clamp the cam through the opening, thereby improving the convenience and efficiency of the cam assembly; on the other hand, the opening can also release stress, thereby improving the structural strength and service life of the cam; on the other hand, the opening can also reduce the overall weight of the cam. The lightweight cam is conducive to reducing the energy required by the nail pressing device during operation, which helps to reduce energy consumption and operating costs in long-term use.

[0027] In some embodiments of the first aspect, the elastic component includes a spring and a guide post, and the guide post is inserted into the spring.

[0028] The above technical solution combines a spring and a guide column in the elastic component to improve the linear movement and stability of the spring, reduce the radial displacement and distortion of the spring during compression and release, and improve the stability and accuracy of the movement of the pressure component, thereby further improving the nail pressing yield of the nail pressing device.

[0029] In a second aspect, the present application provides a liquid injection device, which includes a liquid injection device and a nail pressing device. The liquid injection device is used to inject electrolyte into the interior of the battery cell through the liquid injection hole, and the nail pressing device is used to press the sealing nail into the liquid injection hole.

[0030] In a third aspect, the present application provides a battery production system, which includes the liquid injection equipment provided by any embodiment of the second aspect.

[0031] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0033] Figure 1A schematic diagram of the three-dimensional structure of a nail pressing device provided in some embodiments of the present application;

[0034] Figure 2 A schematic structural diagram of a nail pressing device provided in some embodiments of the present application from a first direction perspective;

[0035] Figure 3 A schematic diagram of the structure of a cam of a nail pressing device provided in some embodiments of the present application;

[0036] Figure 4 for Figure 1 Schematic diagram of the local enlarged structure at H.

[0037] The reference numerals in the specific implementation manner are as follows:

[0038] 10. Mounting frame; 11. First bracket; 111. First part; 112. Second part; 1121. Guide hole; 12. Second bracket; 20. Pressure component; 21. Main body; 22. Roller; 30. First driving component; 31. Driver; 32. Cam; 321. Wheel body; 322. Protrusion; 323. Recess; 324. Opening; 40. Elastic component; 41. Spring; 42. Guide column; 50. Positioning component; 51. Avoidance hole; 52. Main body; 53. Buffering part; 60. First slide rail assembly; 70. Second slide rail assembly; 80. Second driving component; X, first direction. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0041] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0044] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0045] The term "plurality" used in the present application refers to two or more (including two).

[0046] In the present application, the term "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; meanwhile, "vertical" includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0047] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0048] The battery mentioned in the embodiments of the present application may include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in mixed connection through a busbar component.

[0049] In some embodiments, the battery may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0050] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0051] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0052] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0053] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0054] During the battery production process, after the electrolyte is injected into the battery cell through the injection hole, a sealing nail needs to be assembled in the injection hole through a nail pressing device to prevent the electrolyte inside the battery cell from leaking easily. The nail pressing yield of the nail pressing device will directly affect the economic benefits of the battery.

[0055] At present, a sealing nail is usually pre-installed on the injection hole of the battery cell, and then the pressure component of the nail pressing device moves in a direction close to the sealing nail and applies pressure to the sealing nail to press the sealing nail into the injection hole. Then the pressure component moves in a direction away from the sealing nail to return to the initial position, thereby completing a work cycle.

[0056] However, when the seal nail is pre-installed on the injection hole of the battery cell, it often has different degrees of skewness, and the seal nail has a certain elasticity, so the nail pressing device often cannot press the seal nail into the injection hole in a satisfactory manner in one working cycle. In addition, the pressing component in the current nail pressing device is usually driven by an electric cylinder for linear motion. The path of the pressing component in one working cycle is long and time-consuming. Therefore, if multiple working cycles are used to complete the nail pressing work of a seal nail, the efficiency of the entire nail pressing device will be low.

[0057] Based on the above considerations, the present application designs a nail pressing device, which includes a mounting frame, a pressure component, a first driving component and an elastic component. The pressure component is movably connected to the mounting frame along a first direction. The first driving component is connected to the mounting frame, and the first driving component includes a driver and a cam. The driver is connected to the cam and is used to drive the cam to rotate. The elastic component is connected to the mounting frame and the pressure component. The elastic component is used to apply elastic force to the pressure component so that the pressure component and the cam are against each other. The pressure component is configured to move along the first direction when the cam rotates.

[0058] The driver drives the cam to rotate rapidly. During the rotation of the cam, when the position where the cam abuts against the pressure component moves from a low point to a high point, the cam can push the pressure component to move in a direction close to the sealing nail; when the position where the cam abuts against the pressure component moves from a high point to a low point, the elastic force applied by the elastic component to the pressure component can drive the pressure component to move in a direction away from the sealing nail, so as to reset the pressure component.

[0059] In this way, through the coordinated work between the first driving component and the elastic component, the pressure component can achieve rapid linear movement along the first direction, so that the pressure component can quickly and continuously perform multiple-frequency nail pressing operations, the working cycle is significantly shortened, and the frequency of nail pressing per unit time is greatly improved, so that the success rate of qualified sealing nails pressed into the injection hole is improved. What is more noteworthy is that the efficient multiple-frequency nail pressing operation of the pressure component enables the device to accurately press the sealing nail into the injection hole even when dealing with a certain degree of skewness. Overall, the nail pressing device of the above technical solution can effectively improve the nail pressing yield of the nail pressing device.

[0060] The following first introduces the nail pressing device provided in the embodiment of the present application with reference to the drawings. Figure 1 This is a schematic diagram of the structure of a nail pressing device provided in some embodiments of the present application.

[0061] like Figure 1 As shown, the embodiment of the present application provides a nail pressing device, which includes a mounting frame 10, a pressure component 20, a first driving component 30 and an elastic component 40. The pressure component 20 is movably connected to the mounting frame 10 along a first direction X. The first driving component 30 is connected to the mounting frame 10, and the first driving component 30 includes a driver 31 and a cam 32. The driver 31 is connected to the cam 32 and is used to drive the cam 32 to rotate. The elastic component 40 is connected to the mounting frame 10 and the pressure component 20. The elastic component 40 is used to apply elastic force to the pressure component 20 so that the pressure component 20 and the cam 32 are against each other. The pressure component 20 is configured to move along the first direction X when the cam 32 rotates.

[0062] Exemplarily, the mounting frame 10 is used as the basic structure of the nail pressing device, and is mainly used to connect the pressure component 20, the first driving component 30 and the elastic component 40 in the nail pressing device to provide a stable working foundation for the components in the nail pressing device. The mounting frame 10 can be, but is not limited to, made of metal or non-metal materials. For example, the metal material can be copper, aluminum or stainless steel, etc.; the non-metal material can be polyethylene, polypropylene, polyvinyl chloride or wood, etc. As an example, the mounting frame 10 can be made of a high-strength alloy material to improve the structural strength and service life.

[0063] The function of the pressure component 20 is to apply pressure directly to the sealant nail. The pressure component 20 and the mounting frame 10 can also be movably connected by setting a guide rail system, or by a ball screw, or by a slider and a slide groove. As an example, in the case where the pressure component 20 and the mounting frame 10 are movably connected by a slider and a slide groove, the pressure component 20 can be provided with a slider, and the mounting frame 10 can be provided with a slide groove that matches the slider; or the pressure component 20 can be provided with a slide groove, and the mounting frame 10 can be provided with a slider that matches the slide groove.

[0064] Optionally, the pressure component 20 may be made of, but not limited to, metal or non-metal materials, for example, the metal material may be copper, aluminum or stainless steel, etc.; the non-metal material may be polyethylene, polypropylene, polyvinyl chloride or wood, etc. As an example, the pressure component 20 may be made of a high-strength alloy material to improve performance stability.

[0065] The function of the first driving component 30 is to drive the pressure component 20 to move along the first direction X so that the pressure component 20 can apply pressure to the sealant nail. The cam 32 can be detachably connected to the driver 31, or it can be integrally provided on the driver 31. The cam 32 can be directly connected to the driver 31, or it can be restricted to the driver 31 by other components. As an example, the connection method between the cam 32 and the driver 31 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0066] Optionally, the driver 31 may be, but is not limited to, a DC motor, an AC motor, a servo motor, or a stepper motor.

[0067] Optionally, the cam 32 may be made of, but not limited to, metal or non-metal materials, for example, the metal material may be copper, aluminum or stainless steel, etc.; the non-metal material may be polyethylene, polypropylene, polyvinyl chloride or wood, etc. As an example, the cam 32 may be made of a high-strength alloy material to improve structural strength and service life.

[0068] The elastic component 40 is used to provide the necessary restoring force for the pressure component 20, so that the pressure component 20 can quickly and accurately return to the original position after each nail pressing. The elastic component 40 can apply tensile stress to the pressure component 20 so that the pressure component 20 and the cam 32 are against each other, and the elastic component 40 can also apply compressive stress to the pressure component 20 so that the pressure component 20 and the cam 32 are against each other.

[0069] The elastic component 40 can be detachably connected to the mounting frame 10 and the pressure component 20, or can be fixedly arranged on the mounting frame 10 and the pressure component 20. The elastic component 40 can be directly connected to the mounting frame 10 and the pressure component 20, or can be restricted to the mounting frame 10 and the pressure component 20 by other components. As an example, the connection between the elastic component 40 and the mounting frame 10 and the connection between the elastic component 40 and the pressure component 20 can be but not limited to bolt connection, welding, riveting, clamping or bonding, etc. Optionally, the elastic component 40 can be but not limited to a spring 41 or an elastic strip, etc.

[0070] The pressure component 20 is configured to move along the first direction X when the cam 32 rotates. The driver 31 drives the cam 32 to rotate rapidly. During the rotation of the cam 32, when the position where the cam 32 abuts against the pressure component 20 changes from a low point to a high point, the cam 32 can push the pressure component 20 to move in a direction close to the sealant nail; when the position where the cam 32 abuts against the pressure component 20 changes from a high point to a low point, the elastic force applied by the elastic component 40 to the pressure component 20 can drive the pressure component 20 to move in a direction away from the sealant nail, so as to reset the pressure component 20.

[0071] It should be noted that the high point and the low point of the cam 32 refer to the highest position and the lowest position on the profile of the cam 32. At the high point of the cam 32, the cam 32 pushes the pressure member 20 to its farthest position; at the low point of the cam 32, the pressure member 20 is at the position closest to the axis of the cam 32. The difference between the high point and the low point of the cam 32 is the amplitude of the cam 32, which determines the total stroke length of the pressure member 20 in the first direction X.

[0072] In this way, the above technical solution realizes rapid linear movement of the pressure component 20 along the first direction X through the coordinated work between the first driving component 30 and the elastic component 40, so that the pressure component 20 can quickly and continuously perform multiple-frequency nail pressing operations, the working cycle is significantly shortened, and the nail pressing frequency per unit time is greatly improved, so that the success rate of qualified sealing nails pressed into the injection hole is improved. More noteworthy is that the efficient multiple-frequency nail pressing operation of the pressure component 20 enables the device to accurately press the sealing nail into the injection hole even when dealing with a certain degree of skewness. In summary, the nail pressing device of the above technical solution can effectively improve the nail pressing yield of the nail pressing device.

[0073] Figure 2 This is a schematic structural diagram of a nail pressing device provided in some embodiments of the present application from a first direction perspective.

[0074] Continue to refer Figure 2 In some embodiments, the nail pressing device further includes a positioning component 50, the positioning component 50 is connected to the mounting frame 10, and the side of the positioning component 50 away from the mounting frame 10 is used to abut against the battery cell. The positioning component 50 is provided with an avoidance hole 51, and the avoidance hole 51 passes through the positioning component 50 along the first direction X, and at least a part of the pressure applying component 20 can be movably inserted into the avoidance hole 51.

[0075] Exemplarily, after the battery cell reaches the station where the nail pressing device is located, the positioning component 50 moves close to the battery cell and is close to the surface around the liquid injection port of the battery cell. The liquid injection port and the sealing nail pre-installed on the liquid injection port are located in the avoidance hole 51 of the positioning component 50, and the portion of the pressure component 20 that passes through the avoidance hole 51 can perform a nail pressing operation on the sealing nail. By aligning the avoidance hole 51 of the positioning component 50 with the liquid injection port on the battery cell and the sealing nail pre-installed on the liquid injection port, the positioning accuracy and efficiency of the nail pressing device for the battery cell can be improved. Moreover, the positioning component 50 can also abut against the battery cell to reduce the risk of the battery cell moving due to vibration during the nail pressing operation, which can improve the stability and reliability of the entire nail pressing operation.

[0076] The positioning component 50 can be detachably connected to the mounting frame 10, or can be fixedly arranged on the mounting frame 10. The elastic component 40 can be directly connected to the mounting frame 10, or can be restricted to the mounting frame 10 by other components. As an example, the connection between the elastic component 40 and the mounting frame 10 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0077] Optionally, the positioning member 50 may be made of, but not limited to, metal or non-metal material, for example, the metal material may be copper, aluminum or stainless steel, etc.; the non-metal material may be polyethylene, polypropylene, polyvinyl chloride or wood, etc. As an example, the positioning member 50 may be made of a wear-resistant, high-strength material, such as steel or hard alloy, to reduce the risk of damage or deformation due to repeated mechanical contact and to increase the service life.

[0078] The dimension of the avoidance hole 51 in the direction perpendicular to the first direction X is slightly larger than the dimension of the pressure component 20 in the direction perpendicular to the first direction X, so as to improve the smoothness of the movement of the pressure component 20 in the avoidance hole 51. The inner wall of the avoidance hole 51 can also be processed to be smooth and wear-resistant to reduce friction with the pressure component 20 and reduce the risk of generating debris during operation.

[0079] The above technical solution can not only improve the positioning accuracy and positioning efficiency of the nail pressing device by providing the positioning component 50, but also improve the stability and reliability of the entire nail pressing operation process, thereby further improving the nail pressing yield of the nail pressing device.

[0080] In some embodiments, the positioning component 50 includes a buffer portion 53 of the main body 52 , the buffer portion 53 is connected to a side of the main body 52 away from the mounting bracket 10 , and the rigidity of the buffer portion 53 is smaller than that of the main body 52 .

[0081] Exemplarily, the main body 52 is a supporting structure and a connecting structure of the positioning component 50, and the main body 52 is connected to the mounting frame 10. The main body 52 may be made of a high-strength material, such as hard steel or a high-performance alloy, to enhance rigidity and durability, to resist various forces that may occur during the nailing process, and to improve the connection strength between the positioning component 50 and the mounting frame 10.

[0082] The buffer portion 53 is the part of the positioning component 50 that is used to abut against the battery cell. The rigidity of the buffer portion 53 is less than that of the main body 52. ​​It can provide a certain degree of flexibility and buffering capacity when the positioning component 50 contacts the battery cell. During the nail pressing process, the damage of the positioning component 50 to the battery cell can be reduced.

[0083] The buffer portion 53 can be made of rubber, silicone or other highly elastic materials, which can effectively absorb impact and reduce potential damage to the work object caused by hard contact. In addition, the elastic properties of the buffer portion 53 can also make the structural form of the buffer portion 53 slightly adjusted when contacting the battery cell to better fit the actual structure and shape around the injection port of the battery cell, thereby further improving the accuracy of positioning.

[0084] The buffer portion 53 may be detachably connected to the main body 52, or may be fixedly arranged on the main body 52. ​​The buffer portion 53 may be directly connected to the main body 52, or may be restricted to the main body 52 by other components. As an example, the connection between the buffer portion 53 and the main body 52 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0085] The above technical solution sets the positioning component 50 to include a main body 52 and a buffering part 53. The main body 52 provides a solid support to ensure the stability and reliability of the positioning component 50 during the entire nail pressing process. At the same time, the buffering part 53, with its low stiffness characteristics, effectively reduces the mechanical impact and potential damage to the battery cell. In addition, the flexible structure of the buffering part 53 allows fine-tuning of the positioning, thereby greatly improving the positioning accuracy. In this way, the structural stability and operational reliability of the positioning component 50 are cleverly balanced.

[0086] Figure 3 This is a schematic structural diagram of the cam of the nail pressing device provided in some embodiments of the present application.

[0087] Continue to refer Figure 3 In some embodiments, the cam 32 includes a wheel body 321 and a plurality of protrusions 322 , the protrusions 322 protrude from the circumferential side wall of the wheel body 321 , and the plurality of protrusions 322 are arranged at intervals along the circumference of the wheel body 321 .

[0088] Exemplarily, the wheel body 321 is connected to the driver 31, the convex portion 322 refers to a portion protruding from the circumferential side wall of the wheel body 321, and the high point of the cam 32 is the highest position of the convex portion 322. The cam 32 contacts the pressure member 20 through its convex portion 322, converting the rotational motion from the driver 31 into the linear motion of the pressure member 20.

[0089] The number of the protrusions 322 may be two, three, four or more. When each protrusion 322 passes through the pressure component 20, it can push the pressure component 20 to move along the first direction X to achieve one nail pressing operation. In this way, the number of times the cam 32 can push the pressure component 20 to achieve a nail pressing operation after one rotation is positively correlated with the number of the protrusions 322. As an example, when the number of the protrusions 322 is four, the cam 32 can push the pressure component 20 to achieve four nail pressing operations after one rotation.

[0090] Optionally, the wheel body 321 and the convex portion 322 are integrally formed. On the one hand, there is no need to connect the wheel body 321 and the convex portion 322 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the wheel body 321 and the convex portion 322 through an additional connection process, the integrally formed wheel body 321 and the convex portion 322 have a higher connection firmness.

[0091] Optionally, the profile of the protrusion 322 may be an arc shape, so that the amplitude of the cam 32 can change smoothly, thereby improving the stability of the linear movement of the pressure member 20 .

[0092] The above technical solution can improve the nail pressing rhythm of the nail pressing device by arranging a plurality of protrusions 322 on the cam 32, thereby facilitating improving the nail pressing efficiency of the nail pressing device.

[0093] In some embodiments, the cam 32 further includes a plurality of recesses 323 , which are recessed relative to the circumferential sidewall of the wheel body 321 , and the plurality of recesses 323 and the plurality of protrusions 322 are alternately distributed along the circumference of the wheel body 321 .

[0094] For example, the concave portion 323 refers to a portion sunken from the circumferential side wall of the wheel body 321, and the lowest point of the cam 32 is the lowest position of the concave portion 323. During the rotation of the cam 32, the pressure component 20 passes through the convex portion 322 and gradually enters the concave portion 323. The elastic force applied by the elastic component 40 to the pressure component 20 can drive the pressure component 20 to move in a direction away from the sealing nail, so that the pressure component 20 returns to the original position.

[0095] The number of the concave portions 323 may be two, three, four or more. As an example, the number of the concave portions 323 matches the number of the convex portions 322 .

[0096] Optionally, the profile of the recess 323 may be in an arc shape, so that the amplitude of the cam 32 can change smoothly, thereby improving the stability of the linear movement of the pressure member 20 .

[0097] The above technical solution can increase the difference between the high point and the low point of the cam 32 by introducing the recess 323. In other words, it can increase the amplitude of the cam 32, which is beneficial to increase the pressure applied by the pressure component 20 on the sealing nail, thereby improving the nail pressing effect of the nail pressing device.

[0098] In some embodiments, the pressure component 20 includes a body 21 and a roller 22 , the roller 22 is connected to the body 21 and abuts against the cam 32 , the roller 22 is configured to rotate when the cam 32 rotates, and the rotation axis of the roller 22 is parallel to the rotation axis of the cam 32 .

[0099] Exemplarily, the body 21 of the pressure component 20 is a main structure for applying pressure to the sealant nail. The roller 22 is connected to the body 21 and directly abuts against the cam 32. When the cam 32 rotates, the roller 22 itself can also rotate under the action of the rotation of the cam 32. The rotation of the roller 22 can reduce the direct friction between the pressure component 20 and the cam 32, thereby reducing the wear of the contact part between the pressure component 20 and the cam 32, which can not only extend the service life of the nail pressing device, but also improve the stability of the nail pressing operation of the nail pressing device.

[0100] The rotation axis of the roller 22 is parallel to the rotation axis of the cam 32. This design improves the smoothness of the interaction between the roller 22 and the cam 32, so that the roller 22 can rotate accordingly according to the rotation of the cam 32, thereby effectively transmitting pressure to the body 21.

[0101] The roller 22 can be detachably connected to the body 21, or can be fixedly arranged on the body 21. The roller 22 can be directly connected to the body 21, or can be restricted to the body 21 by other components. As an example, the connection between the roller 22 and the body 21 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0102] Optionally, the roller 22 may be made of, but not limited to, metal or non-metal materials, for example, the metal material may be copper, aluminum or stainless steel, etc.; the non-metal material may be polyethylene, polypropylene, polyvinyl chloride or wood, etc. As an example, the roller 22 may be made of a material with high wear resistance and load-bearing capacity, such as hardened steel or an alloy with a wear-resistant coating, to reduce the risk of damage or deformation due to repeated mechanical contact and to increase the service life.

[0103] The above technical solution can reduce the direct friction between the pressure component 20 and the cam 32 by introducing the roller 22, thereby reducing the wear of the contact part between the pressure component 20 and the cam 32, which can not only extend the service life of the nail pressing device and reduce the maintenance cost, but also improve the stability of the nail pressing operation of the nail pressing device.

[0104] In some embodiments, the mounting frame 10 includes a first bracket 11, the first bracket 11 includes a first part 111 and a second part 112, the pressure component 20 and the first driving component 30 are connected to the first part 111, the second part 112 is provided with a guide hole 1121, the guide hole 1121 passes through the second part 112 along the first direction X, and at least part of the pressure component 20 can be movably inserted into the guide hole 1121.

[0105] Exemplarily, the first part 111 is a basic structure connecting the pressure component 20 and the first driving component 30, and provides a stable working foundation for the pressure component 20 and the first driving component 30. The second part 112 is provided with a guide hole 1121, so that the main function of the second part 112 is to provide guidance for the pressure component 20. When the pressure component 20 moves linearly along the first direction X, the guide hole 1121 can limit the part of the pressure component 20 located in the guide hole 1121 in a direction perpendicular to the first direction X, thereby reducing the deflection of the pressure component 20 in the direction perpendicular to the first direction X during the movement.

[0106] The second part 112 may be detachably connected to the first part 111, or may be integrally provided on the first part 111. The second part 112 may be directly connected to the first part 111, or may be restricted to the first part 111 by other components. As an example, the connection between the second part 112 and the first part 111 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0107] Optionally, the first part 111 and the second part 112 are integrally formed. On the one hand, there is no need to connect the first part 111 and the second part 112 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the first part 111 and the second part 112 through an additional connection process, the first part 111 and the second part 112 in an integral structure have a higher connection firmness.

[0108] The dimension of the guide hole 1121 in the direction perpendicular to the first direction X is slightly larger than the dimension of the pressure member 20 in the direction perpendicular to the first direction X, so as to improve the smoothness of the movement of the pressure member 20 in the guide hole 1121. The inner wall of the guide hole 1121 can also be processed to be smooth and wear-resistant to reduce friction with the pressure member 20 and reduce the risk of generating debris during operation.

[0109] The above technical solution divides the first bracket 11 into structures according to different functions. The first part 111 is used to carry the pressure component 20 and the first driving component 30, and the second part 112 is used to provide guidance for the pressure component 20. This can not only improve the overall structural stability of the nail pressing device, but also optimize the accuracy of the linear motion of the pressure component 20 along the first direction X.

[0110] In some embodiments, the nail pressing device further includes a first slide rail assembly 60, which is extended along the first direction X, and the pressure component 20 is movably connected to the first portion 111 through the first slide rail assembly 60. The slide rail assembly has high sliding accuracy and smoothness, which can improve the consistency and accuracy of each nail pressing operation of the pressure component 20, and can reduce vibration and deviation during the movement of the pressure component 20.

[0111] In some embodiments, the mounting bracket 10 further includes a second bracket 12 , and the first bracket 11 is movably connected to the second bracket 12 along the first direction X.

[0112] For example, after the battery cell reaches the station where the nail pressing device is located, the first bracket 11 moves by itself and drives the pressure component 20 and the first driving component 30 to move in the direction close to the battery cell, so that the relative position and distance between the pressure component 20 and the sealing nail meet the requirements. The movable connection between the first bracket 11 and the second bracket 12 can be achieved by, but is not limited to, a mechanical structure such as a guide rail system, a slider or a ball screw.

[0113] Optionally, the second bracket 12 may be made of, but is not limited to, metal or non-metal material, for example, the metal material may be copper, aluminum or stainless steel, etc.; the non-metal material may be polyethylene, polypropylene, polyvinyl chloride or wood, etc. As an example, the first bracket 11 and the second bracket 12 may be made of the same material to simplify the manufacturing process and help reduce costs.

[0114] The movable design of the first bracket 11 in the above technical solution increases the operational flexibility of the nail pressing device, allowing it to easily adapt to work requirements at different heights or angles, thereby significantly improving the adaptability and flexibility of the nail pressing device.

[0115] In some embodiments, the nail pressing device further includes a second slide rail assembly 70, which is extended along the first direction X, and the first bracket 11 is movably connected to the second bracket 12 through the second slide rail assembly 70. The slide rail assembly has high sliding accuracy and smoothness, can improve the consistency and accuracy of each movement of the first bracket 11, and can reduce vibration and deviation of the first bracket 11 during movement.

[0116] In some embodiments, the nail pressing device further includes a second driving component 80 , which is connected to the first bracket 11 and is used to drive the first bracket 11 to move along the first direction X.

[0117] Exemplarily, the second driving component 80 may be, but is not limited to, an electric cylinder, a DC motor, an AC motor, a stepper motor, or a servo motor.

[0118] By providing the second driving component 80 to drive the first bracket 11 to move, the position of the first bracket 11 can be adjusted quickly and accurately, which reduces the work preparation time and improves the overall operating efficiency of the nail pressing device.

[0119] In some embodiments, the cam 32 is provided with a plurality of openings 324 . The openings 324 extend along the axial direction of the cam 32 . The plurality of openings 324 are arranged at intervals along the circumference of the cam 32 .

[0120] For example, the opening 324 may penetrate the cam 32 along the axial direction of the cam 32, or may be recessed relative to at least one of the two side surfaces of the cam 32 that are opposite to each other along its own axis. The number of the openings 324 may be, but is not limited to, two, three, four or more, and may be selected according to the actual application environment.

[0121] Optionally, the projection of the opening 324 along the axial direction of the cam 32 may be, but is not limited to, a circle, a triangle, a rectangle, a trapezoid, an ellipse, or the like.

[0122] The above technical solution provides an opening 324 on the cam 32. On the one hand, during the assembly process of the cam 32, relevant assembly tools can clamp the cam 32 through the opening 324, thereby improving the convenience and efficiency of assembling the cam 32; on the other hand, the opening 324 can also release stress, thereby improving the structural strength and service life of the cam 32; on the other hand, the opening 324 can also reduce the overall weight of the cam 32. The lightweight cam 32 is conducive to reducing the energy required by the nail pressing device during operation, which helps to reduce energy consumption and operating costs in long-term use.

[0123] Figure 4 for Figure 1 Schematic diagram of the local enlarged structure at H.

[0124] Continue to refer Figure 4 In some embodiments, the elastic component 40 includes a spring 41 and a guide column 42 , and the guide column 42 is inserted into the spring 41 .

[0125] For example, the spring 41 is the main elastic element in the elastic component 40, responsible for providing the necessary restoring elastic force for the pressure component 20. The guide column 42 is inserted into the spring 41, and its main function is to improve the linear movement and stability of the spring 41, so as to reduce the radial displacement and distortion of the spring 41 during the compression and release process, and improve the stability and accuracy of the movement of the pressure component 20.

[0126] The guide post 42 is connected to the mounting frame 10. The guide post 42 may be detachably connected to the mounting frame 10, or may be integrally provided on the mounting frame 10. The guide post 42 may be directly connected to the mounting frame 10, or may be restricted to the mounting frame 10 by other components. As an example, the connection between the guide post 42 and the mounting frame 10 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0127] Optionally, the guide post 42 may be made of, but not limited to, metal or non-metal material, for example, the metal material may be copper, aluminum or stainless steel, etc.; the non-metal material may be polyethylene, polypropylene, polyvinyl chloride or wood, etc. As an example, the guide post 42 may be made of a high-strength alloy material to improve the structural strength and service life.

[0128] The above technical solution combines a spring 41 and a guide column 42 in the elastic component 40 to improve the linear movement and stability of the spring 41, reduce the radial displacement and distortion of the spring 41 during compression and release, and improve the stability and accuracy of the movement of the pressure component 20, thereby further improving the nail pressing yield of the nail pressing device.

[0129] According to some embodiments of the present application, the present application also provides a liquid injection device, which includes a liquid injection device and a nail pressing device of any of the above schemes, the liquid injection device is used to inject electrolyte into the interior of the battery cell through the liquid injection hole, and the nail pressing device is used to press the sealing nail into the liquid injection hole.

[0130] According to some embodiments of the present application, the present application also provides a battery production system, including the liquid injection equipment of any of the above schemes.

[0131] In order to better understand the nail pressing device provided in the embodiment of the present application, based on the same inventive concept, an embodiment of the above-mentioned nail pressing device in actual application is provided here for illustration.

[0132] The embodiment of the present application provides a nail pressing device, which includes a mounting frame 10, a pressure component 20, a first driving component 30, an elastic component 40, a positioning component 50 and a second driving component 80. The mounting frame 10 includes a first bracket 11 and a second bracket 12. The first bracket 11 is movably connected to the second bracket 12 through a second slide rail assembly 70. The first bracket 11 includes a first portion 111 and a second portion 112. The pressure component 20 is movably connected to the first portion 111 through a first slide rail assembly 60. The first driving component 30 is fixedly connected to the first portion 111. The second portion 112 is provided with a guide hole 1121. The guide hole 1121 passes through the second portion 112 along a first direction X. At least part of the pressure component 20 is movably arranged in the guide hole 1121. The first slide rail assembly 60 and the second slide rail assembly 70 are both extended along the first direction X. The second driving component 80 is connected to the first bracket 11 and is used to drive the first bracket 11 to move along the first direction X.

[0133] The pressure member 20 includes a body 21 and a roller 22 . The roller 22 is connected to the body 21 and abuts against the cam 32 . The roller 22 is configured to rotate when the cam 32 rotates, and the rotation axis of the roller 22 is parallel to the rotation axis of the cam 32 .

[0134] The first driving component 30 is connected to the mounting frame 10, and includes a driver 31 and a cam 32. The driver 31 is connected to the cam 32 and is used to drive the cam 32 to rotate. The cam 32 includes a wheel body 321, a plurality of convex portions 322 and a plurality of concave portions 323. The convex portions 322 protrude from the circumferential side wall of the wheel body 321, and the concave portions 323 are recessed relative to the circumferential side wall of the wheel body 321. The plurality of concave portions 323 and the plurality of convex portions 322 are alternately distributed along the circumference of the wheel body 321.

[0135] The elastic component 40 is connected to the mounting frame 10 and the pressure component 20. The elastic component 40 is used to apply elastic force to the pressure component 20 so that the pressure component 20 is against the cam 32. The elastic component 40 includes a spring 41 and a guide column 42. The guide column 42 is inserted into the spring 41. The pressure component 20 is configured to move along the first direction X when the cam 32 rotates.

[0136] The positioning member 50 is connected to the mounting frame 10, and the side of the positioning member 50 away from the mounting frame 10 is used to abut against the battery cell. The positioning member 50 is provided with an escape hole 51, which passes through the positioning member 50 along the first direction X, and at least part of the pressure member 20 is movably disposed in the escape hole 51.

[0137] In this way, through the coordinated work between the first driving component 30 and the elastic component 40, the pressure component 20 can achieve rapid linear movement along the first direction X, so that the pressure component 20 can quickly and continuously perform multiple-frequency nail pressing operations, the working cycle is significantly shortened, and the frequency of nail pressing per unit time is greatly improved, so that the success rate of qualified sealing nails pressed into the injection hole is improved. It is more noteworthy that the efficient multiple-frequency nail pressing operation of the pressure component 20 enables the device to accurately press the sealing nail into the injection hole even when dealing with a certain degree of skewness. In summary, the nail pressing device of the above technical solution can effectively improve the nail pressing yield of the nail pressing device.

[0138] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A nail pressing device, characterized in that: include: Mounting frame; A pressure member movably connected to the mounting frame along a first direction; A first driving component connected to the mounting frame, the first driving component comprising a driver and a cam, the driver being connected to the cam and used to drive the cam to rotate; An elastic component is connected to the mounting bracket and the pressure component, and is used to apply elastic force to the pressure component so that the pressure component and the cam are pressed against each other. The pressure component is configured to move along the first direction when the cam rotates.

2. The nail pressing device according to claim 1, characterized in that: The nail pressing device further includes a positioning component, the positioning component is connected to the mounting frame, and a side of the positioning component away from the mounting frame is used to abut against the battery cell; The positioning component is provided with an avoidance hole, the avoidance hole penetrates the positioning component along the first direction, and at least a portion of the pressure-applying component is movably disposed in the avoidance hole.

3. The nail pressing device according to claim 2, characterized in that: The positioning component comprises a buffer portion of a main body, the buffer portion is connected to a side of the main body away from the mounting bracket, and the rigidity of the buffer portion is smaller than the rigidity of the main body.

4. The nail pressing device according to claim 1, characterized in that: The cam includes a wheel body and a plurality of protrusions, wherein the protrusions protrude from a circumferential side wall of the wheel body, and the plurality of protrusions are arranged at intervals along the circumference of the wheel body.

5. The nail pressing device according to claim 4, characterized in that: The cam further includes a plurality of recessed portions, the recessed portions being recessed relative to a circumferential side wall of the wheel body, and the plurality of recessed portions and the plurality of convex portions being alternately distributed along the circumference of the wheel body.

6. The nail pressing device according to claim 1, characterized in that: The pressure member includes a body and a roller, wherein the roller is connected to the body and abuts against the cam, and the roller is configured to rotate when the cam rotates, and a rotation axis of the roller is parallel to a rotation axis of the cam.

7. The nail pressing device according to claim 1, characterized in that: The mounting frame includes a first bracket, the first bracket includes a first part and a second part, the pressure component and the first driving component are connected to the first part, the second part is provided with a guide hole, the guide hole passes through the second part along the first direction, and at least part of the pressure component can be movably inserted into the guide hole.

8. The nail pressing device according to claim 7, characterized in that: The nail pressing device further includes a first slide rail assembly, which is extended along the first direction, and the pressure applying component is movably connected to the first part through the first slide rail assembly.

9. The nail pressing device according to claim 7, characterized in that: The mounting bracket further includes a second bracket, and the first bracket is movably connected to the second bracket along a first direction.

10. The nail pressing device according to claim 9, characterized in that: The nail pressing device further includes a second slide rail assembly, which is extended along the first direction, and the first bracket is movably connected to the second bracket through the second slide rail assembly.

11. The nail pressing device according to claim 9, characterized in that: The nail pressing device further includes a second driving component, which is connected to the first bracket and is used to drive the first bracket to move along the first direction.

12. The nail pressing device according to claim 1, characterized in that: The cam is provided with a plurality of openings, the openings extending along the axial direction of the cam, and the plurality of openings are arranged at intervals along the circumferential direction of the cam.

13. The nail pressing device according to claim 1, characterized in that: The elastic component includes a spring and a guide column, and the guide column is inserted into the spring.

14. A liquid injection device, characterized in that: include: A liquid injection device, used to inject electrolyte into the interior of the battery cell through the liquid injection hole; The nail pressing device according to any one of claims 1 to 13 is used to press the sealing nail into the injection hole.

15. A battery production system, characterized in that: Comprising the liquid injection device as described in claim 14.

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