Nail pressing mechanism and welding equipment

Abstract

The utility model discloses a nail pressing mechanism and welding equipment, and relates to the technical field of battery processing equipment, and the nail pressing mechanism comprises a fixing frame, a lifting mechanism, a telescopic mechanism and a nail pressing rod; the lifting mechanism is arranged on the fixing frame; the telescopic mechanism is in transmission connection with the lifting mechanism; the lifting mechanism drives the telescopic mechanism to lift in a first direction; the nail pressing rod is in transmission connection with the telescopic mechanism, the telescopic mechanism drives the nail pressing rod to stretch out and draw back in the second direction, and an included angle is formed between the second direction and the first direction; under the condition that the telescopic mechanism drives the nail pressing rod to extend out to the first position, the lifting mechanism drives the telescopic mechanism and the nail pressing rod to descend to the second position, and the nail pressing rod is configured to press the sealing nail; the telescopic mechanism is connected to the lifting mechanism through a connecting adjusting piece, and the connecting adjusting piece can adjust the position of the telescopic mechanism in the second direction. According to the technical scheme, the bad problems that in the welding process of the sealing nail, nail flying and nail warping are likely to happen can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of battery processing equipment, and in particular to a nail pressing mechanism and welding equipment. Background Art

[0002] The sealing pin welding process is a key step in the battery production process. During the welding process, the sealing pins are usually placed on the top cover first, and then the sealing pins are welded to the battery cell through the welding laser of the welding equipment. This process is prone to problems such as flying pins and lifted pins. Utility Model Content

[0003] In view of the above problems, the present application provides a nail pressing mechanism and a welding device, which aim to solve the problem that sealing nails are prone to flying nails and lifting nails during the welding process.

[0004] The present application provides a nail pressing mechanism including a fixed frame, a lifting mechanism, a telescopic mechanism and a nail pressing rod; the lifting mechanism is arranged on the fixed frame; the telescopic mechanism is connected to the lifting mechanism by transmission, and the lifting mechanism drives the telescopic mechanism to lift and lower in a first direction; the nail pressing rod is connected to the telescopic mechanism by transmission, and the telescopic mechanism drives the nail pressing rod to extend and retract in a second direction, and the second direction is arranged at an angle to the first direction; wherein, under the condition that the telescopic mechanism drives the nail pressing rod to extend to the first position, the lifting mechanism drives the telescopic mechanism and the nail pressing rod to descend to the second position, and the nail pressing rod is configured to press the sealing nail; the telescopic mechanism is connected to the lifting mechanism by a connecting adjustment member, and the connecting adjustment member can adjust the position of the telescopic mechanism in the second direction.

[0005] In the technical solution of the embodiment of the present application, the technical solution of the present application designs a nail pressing mechanism capable of pressing the sealing nail. Before welding, the nail pressing rod is driven to extend to the first position by the telescopic mechanism so that the nail pressing rod is located above the sealing nail, and then the telescopic mechanism and the nail pressing rod are driven to descend to the second position by the lifting mechanism so that the nail pressing rod presses the sealing nail on the top cover of the battery cell, thereby solving the problem that the sealing nail is prone to flying nails and warping nails during welding. In addition, the connecting adjustment member can be used to adjust the position of the telescopic mechanism relative to the lifting mechanism in the second direction, so that the nail pressing mechanism can further adapt to battery products of different sizes, so as to further improve the versatility of the nail pressing mechanism.

[0006] In some embodiments, the fixing frame is provided with an installation channel, and at least one of the lifting mechanism, the telescopic mechanism, and the nail pressing rod is inserted into the installation channel. With such a design, during the installation process, at least one of the lifting mechanism, the telescopic mechanism, and the nail pressing rod can be inserted into the installation channel of the fixing frame, which not only makes the lifting mechanism more reliable when installed on the fixing frame, but also improves the installation compactness of each structure, thereby achieving the purpose of small volume design.

[0007] In some embodiments, the fixing frame includes a bottom plate, two side plates, and a top plate; the lifting mechanism is connected to the bottom plate; the two side plates are connected to opposite sides of the bottom plate; the top plate is connected to one side of the two side plates away from the bottom plate, and the bottom plate, the two side plates, and the top plate are enclosed to form an installation channel. With such a design, a square installation channel can be formed by enclosing the bottom plate, the two side plates, and the top plate, so that there is enough space in the installation channel for installing the lifting mechanism, the telescopic mechanism, and the nail pressing rod.

[0008] In some embodiments, the top plate is configured to be connected to the welding body. The top plate is provided with an adjustment hole, and the adjustment hole extends along a third direction. The third direction is arranged at an angle with the first direction and at an angle with the second direction. With such a design, the top plate of the fixing frame can be connected to the welding body by using screws or other connecting pieces in cooperation with the adjustment hole. Since the adjustment hole extends along the third direction, the position of the top plate relative to the welding body can be adjusted along the third direction, and then the position of the entire nail pressing mechanism relative to the welding body in the third direction can be adjusted, so that the nail pressing mechanism can adapt to cell products of different sizes, thereby improving the versatility of the nail pressing mechanism.

[0009] In some embodiments, the nail pressing rod includes a connecting section and a nail pressing section; one end of the connecting section is connected to the telescopic mechanism; the nail pressing section is connected to the end of the connecting section away from the telescopic mechanism. The width of the nail pressing section is smaller than the width of the connecting section, and / or the height of the nail pressing section is smaller than the height of the connecting section. The nail pressing section is configured to press the sealing nail. With such a design, by using a nail pressing section with a smaller width and / or height to press the sealing nail, when the telescopic mechanism drives the nail pressing rod to extend above the sealing nail and the lifting mechanism drives the telescopic mechanism and the nail pressing rod to descend, the nail pressing section with a smaller width and / or height can be more easily inserted into the cell top cover, so that the nail pressing section can smoothly press on the sealing nail. At the same time, the nail pressing section with a smaller width and / or height covers a smaller area when pressing the sealing nail, so that the position where the sealing nail needs to be welded will not be blocked, and the welding laser can smoothly weld the sealing nail and the cell; and by using a connecting section with a larger width and / or height to be connected to the telescopic mechanism, the overall stiffness of the nail pressing rod can be improved, so as to improve the anti-deformation ability of the nail pressing rod. The nail pressing rod is not easily deformed when pressing the sealing nail, and the service life of the nail pressing rod can be improved.

[0010] In some embodiments, the nail pressing section has a pressing surface, and the pressing surface is provided with a profiling nail pressing piece, and the profiling nail pressing piece is configured to press the sealing nail. With such a design, when the profiling nail pressing piece presses the sealing nail, the bottom surface of the profiling nail pressing piece can be fully attached to the top surface of the sealing nail, so as to improve the pressing balance of the sealing nail and the pressing strength of the sealing nail, thereby further solving the problems of flying nails and warping nails that are likely to occur during the welding process of the sealing nail.

[0011] In some embodiments, a clearance groove is provided at the bottom of one end of the connecting section close to the nail pressing section, and the clearance groove is configured to avoid the battery cell. With such a design, the clearance groove can make the height of one end of the connecting section close to the nail pressing section the same as that of the nail pressing section. In this way, when the nail pressing section presses the sealing nail, the battery cell can be avoided through the position of the clearance groove, so as to prevent interference between the relatively high connecting section and the battery cell and affect the pressing effect of the nail pressing rod on the sealing nail.

[0012] In some embodiments, a positioning groove is provided at one end of the telescopic part of the telescopic mechanism, and the end of the connecting section far from the nail pressing section is inserted into the positioning groove. With such a design, during the installation process, the end of the connecting section far from the nail pressing section can be inserted into the positioning groove of the telescopic part to position the nail pressing rod, and then the connecting section can be further fixed to the telescopic part of the telescopic mechanism by using screws or other connecting parts, so as to achieve the precise installation of the nail pressing rod and the telescopic mechanism.

[0013] The present application also provides a welding device, including a battery cell clamping mechanism, a welding body and the above-mentioned nail pressing mechanism; the battery cell clamping mechanism is configured to fix the battery cell; the welding body includes a welding laser and a welding cover plate, the welding laser is configured to weld the sealing nail and the battery cell, and the welding cover plate is configured to cover the non-welding area of the battery cell; the nail pressing mechanism is arranged on the welding cover plate and above the battery cell clamping mechanism.

[0014] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the other purposes, features and advantages of the present application more obvious and understandable, the following specifically gives the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the structures shown in these drawings.

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the nail pressing mechanism of the present application;

[0017] Figure 2 is Figure 1 a partial enlarged view of part A in

[0018] Figure 3 It is a schematic structural diagram of the fixing frame in an embodiment of the nail pressing mechanism of the present application;

[0019] Figure 4Schematic diagram of the lifting mechanism in an embodiment of the nail pressing mechanism of the present application;

[0020] Figure 5 Schematic diagram of the telescopic mechanism in an embodiment of the nail pressing mechanism of the present application;

[0021] Figure 6 Schematic diagram of the nail pressing rod in an embodiment of the nail pressing mechanism of the present application;

[0022] Figure 7 Partial structural schematic diagram of an embodiment of the welding equipment of the present application;

[0023] Figure 8 Partial front view of the structure of an embodiment of the welding equipment of the present application;

[0024] Figure 9 Partial top view of the structure of an embodiment of the welding equipment of the present application;

[0025] Figure 10 Partial left view of the structure of an embodiment of the welding equipment of the present application.

[0026] Explanation of the reference numerals in the drawings:

[0027]

[0028] The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0029] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and thus are only examples and cannot be used to limit the protection scope of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion.

[0031] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0032] Reference to "embodiment" in this document means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of the present application, the term "a plurality" means two or more (including two). Similarly, "a plurality of groups" means two or more groups (including two groups), and "a plurality of sheets" means two or more sheets (including two sheets).

[0034] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width and / or height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] The sealing nail welding process is a key step in the battery production process. During the welding of the sealing nail, usually the sealing nail is first placed on the top cover, and then the sealing nail is welded to the battery cell by the welding laser of the welding equipment. This process is prone to adverse problems such as flying nails and warped nails.

[0037] Based on the above problems, the present application proposes a nail pressing mechanism 100, aiming to solve the adverse problems of flying nails and warped nails easily generated during the welding of the sealing nails. The following will be described in detail with specific drawings and embodiments.

[0038] Please refer to Figures 1 to 6, in an embodiment of the present application, the nail pressing mechanism 100 includes a fixed frame 10, a lifting mechanism 20, a telescopic mechanism 30, and a nail pressing rod 40; the lifting mechanism 20 is arranged on the fixed frame 10; the telescopic mechanism 30 is drivingly connected to the lifting mechanism 20, and the lifting mechanism 20 drives the telescopic mechanism 30 to lift in the first direction a; the nail pressing rod 40 is drivingly connected to the telescopic mechanism 30, and the telescopic mechanism 30 drives the nail pressing rod 40 to extend and retract in the second direction b, and the second direction b is arranged at an angle with the first direction a; wherein, under the condition that the telescopic mechanism 30 drives the nail pressing rod 40 to extend to the first position, the lifting mechanism 20 drives the telescopic mechanism 30 and the nail pressing rod 40 to descend to the second position, and the nail pressing rod 40 is configured to press the sealing nail. The telescopic mechanism 30 is connected to the lifting mechanism 20 through a connection adjusting member 30a, and the connection adjusting member 30a can adjust the position of the telescopic mechanism 30 in the second direction b.

[0039] The fixed frame 10 is used to install and fix the lifting mechanism 20, the telescopic mechanism 30, and the nail pressing rod 40. The fixed frame 10 is also used to integrally install the nail pressing mechanism 100 on the welding body of the welding device 1000, so that the nail pressing mechanism 100 cooperates with the welding body to realize the welding and fixing of the sealing nail and the battery cell. The fixed frame 10 can be in a frame structure, or can be a fixed structural member in the shape of a plate, a block, a strip, etc.

[0040] The lifting mechanism 20 is used to drive the telescopic mechanism 30 and the nail pressing rod 40 to lift together in the first direction a. The lifting mechanism 20 can include a first driving part 21 and a lifting part 22; the first driving part 21 can be a linear cylinder, or can be a structure of a rotary cylinder cooperating with a gear and a rack, or can be a structure of a rotary cylinder cooperating with a screw and a nut; the lifting part 22 can be a structural member in the shape of a plate, a block, a strip, etc., and the lifting part 22 is connected to the output shaft of the first driving part 21, so as to drive the lifting part 22 to lift in the first direction a through the output shaft under the action of the first driving part 21. The telescopic mechanism 30 is connected to the lifting part 22 to lift in the first direction a along with the lifting part 22, and further enables the nail pressing rod 40 connected to the telescopic mechanism 30 to also lift in the first direction a along with the lifting part 22. When the lifting mechanism 20 drives the telescopic mechanism 30 and the nail pressing rod 40 to descend to a specified position, the nail pressing rod 40 abuts against the sealing nail and presses the sealing nail on the battery cell cover; when the lifting mechanism 20 drives the telescopic mechanism 30 and the nail pressing rod 40 to rise to a specified position, the nail pressing rod 40 is located above the sealing nail and is spaced apart from the sealing nail.

[0041] The telescopic mechanism 30 is used to drive the nail pressing rod 40 to move in the second direction b to achieve telescoping. The telescopic mechanism 30 may include a second driving part 31 and a telescopic part 32; the second driving part 31 may also be a linear cylinder, or a structure of a rotary cylinder cooperating with a gear rack, or a structure of a rotary cylinder cooperating with a lead screw nut; the telescopic part 32 may also be a structural member in the shape of a plate, a block, a strip, etc. The telescopic part 32 is connected to the output shaft of the second driving part 31, so as to drive the telescopic part 32 to telescope in the second direction b under the action of the second driving part 31 through the output shaft. The nail pressing rod 40 is connected to the telescopic part 32 to telescope in the second direction b along with the telescopic part 32. When the telescopic mechanism 30 drives the nail pressing rod 40 to extend to a specified position, the nail pressing rod 40 is located above the sealing nail; when the telescopic mechanism 30 drives the nail pressing rod 40 to retract to the original position, the nail pressing rod 40 is arranged in a dislocation manner with the area above the sealing nail. In some embodiments, in order to improve the smoothness of the second driving part 31 driving the telescopic part 32 to telescope, a slider 322 may be provided on the telescopic part 32, and a slide rail 221 may be provided on the lifting part 22 of the lifting mechanism 20 to guide the telescopic part 32 during the telescoping process under the cooperation of the slide rail 221 and the slider 322.

[0042] The connecting and adjusting member 30a is used to connect the telescopic mechanism 30 to the lifting mechanism 20, and adjust the position of the telescopic mechanism 30 relative to the lifting mechanism 20 along the second direction b through the connecting and adjusting member 30a. In practical applications, the connecting and adjusting member 30a may be a structural member such as a bolt or a screw rod. In some embodiments, the connecting and adjusting member 30a is a screw rod. An adjusting connection hole is provided on the telescopic part 32 of the lifting mechanism 20, and a mounting hole is provided on the telescopic mechanism 30. The screw rod passes through the mounting hole and is inserted into the adjusting connection hole. The position of the telescopic mechanism 30 relative to the lifting mechanism 20 can be adjusted by adjusting the depth of the screw rod screwed into the adjusting connection hole.

[0043] The nail pressing rod 40 is used to press or release the sealing nail. When the nail pressing rod 40 presses the sealing nail, the sealing nail can be pressed on the top cover of the battery cell. At this time, the welding laser of the welding device 1000 can be used to weld the sealing nail and the battery cell, which can prevent the problems of flying nails and warped nails that are likely to occur during the welding process. The nail pressing rod 40 may be a rod-shaped structure with a consistent width and / or height, or may be a rod-shaped structure with at least two sections having inconsistent widths and / or heights. The nail pressing rod 40 can be connected to the telescopic part 32 of the telescopic mechanism 30 by means of screws, buckles, bonding, etc.

[0044] In some embodiments, the first direction a and the second direction b may be the Z-axis and X-axis directions respectively. The lifting mechanism 20 can drive the telescopic mechanism 30 and the nail pressing rod 40 to lift in the Z-axis direction; the telescopic mechanism 30 can drive the nail pressing rod 40 to telescope in the X-axis direction.

[0045] In summary, in the technical solution of the embodiment of the present application, the technical solution of the present application designs a nail pressing mechanism 100 capable of pressing a sealing nail. Before welding, the telescopic mechanism 30 drives the nail pressing rod 40 to extend to the first position so that the nail pressing rod 40 is located above the sealing nail, and then the lifting mechanism 20 drives the telescopic mechanism 30 and the nail pressing rod 40 to descend to the second position so that the nail pressing rod 40 presses the sealing nail against the battery cell top cover, thereby solving the problem of poor flying nails and warping nails that are likely to occur during the welding of the sealing nail.

[0046] In addition, the connecting and adjusting member 30a can be used to adjust the position of the telescopic mechanism 30 relative to the lifting mechanism 20 in the second direction b, so that the nail pressing mechanism 100 can further adapt to battery cell products of different sizes, thereby further improving the versatility of the nail pressing mechanism 100.

[0047] Please refer to Figure 1 、 Figure 3 In an embodiment of the present application, the fixing frame 10 is provided with an installation channel 10a, and at least one of the lifting mechanism 20, the telescopic mechanism 30, and the nail pressing rod 40 is disposed through the installation channel 10a.

[0048] The installation channel 10a is a through channel penetrating through opposite sides of the fixing frame 10, and at least one of the lifting mechanism 20, the telescopic mechanism 30, and the nail pressing rod 40 can be disposed in the installation channel 10a from one side of the fixing frame 10. The cross section of the installation channel 10a can be in the shape of a square, a circle, an ellipse, a triangle, etc.

[0049] With such a design, during the installation process, at least one of the lifting mechanism 20, the telescopic mechanism 30, and the nail pressing rod 40 can be disposed through the installation channel 10a of the fixing frame 10. This can not only make the installation of the lifting mechanism 20 on the fixing frame 10 more reliable, but also improve the installation compactness of each structure, achieving the purpose of a small volume design.

[0050] Please refer to Figure 3 In an embodiment of the present application, the fixing frame 10 includes a bottom plate 11, two side plates 12, and a top plate 13; the lifting mechanism 20 is connected to the bottom plate 11; the two side plates 12 are connected to opposite sides of the bottom plate 11; the top plate 13 is connected to one side of the two side plates 12 away from the bottom plate 11, and the bottom plate 11, the two side plates 12, and the top plate 13 are enclosed to form the installation channel 10a.

[0051] The bottom plate 11, the two side plates 12, and the top plate 13 are used to form a square fixing frame 10 and are enclosed to form a square installation channel 10a. The two plate bodies connected to each other among the bottom plate 11, the two side plates 12, and the top plate 13 can be connected by means such as screws, buckles, and adhesives.

[0052] With such a design, a square installation channel 10a can be formed by enclosing the bottom plate 11, two side plates 12, and the top plate 13, so that the installation channel 10a has enough space for installing the lifting mechanism 20, the telescopic mechanism 30, and the nail pressing rod 40.

[0053] In practical applications, the lifting mechanism 20 can be connected to at least one of the bottom plate 11, the side plates 12, and the top plate 13. Of course, in some embodiments, to facilitate the installation of the lifting mechanism 20, the lifting mechanism 20 can be connected to one side of the bottom plate 11. And, to improve the smoothness of the lifting mechanism 20 driving the telescopic mechanism 30 to lift in the first direction a, a guiding column can be provided on one side of the bottom plate 11 close to the top plate 13, and a guiding hole can be provided on the lifting part 22 of the lifting mechanism 20. The guiding column is inserted into the guiding hole. When the telescopic mechanism 30 works, the lifting of the telescopic part 32 can be guided under the cooperation of the guiding column and the guiding hole, and then the telescopic mechanism 30 can be guided during lifting.

[0054] Please refer to Figure 3 , in an embodiment of the present application, the top plate 13 is configured to be connected to the welding body. The top plate 13 is provided with an adjustment hole 131, and the adjustment hole 131 extends along the third direction c. The third direction c is arranged at an angle with the first direction a and is arranged at an angle with the second direction b.

[0055] In this embodiment, the adjustment hole 131 can be an elongated hole extending along the third direction c.

[0056] With such a design, the top plate 13 of the fixing frame 10 can be connected to the welding body by using a screw or other connecting piece in cooperation with the adjustment hole 131. Since the adjustment hole 131 extends along the third direction c, the position of the top plate 13 relative to the welding body can be adjusted along the third direction c, and then the position of the entire nail pressing mechanism 100 relative to the welding body in the third direction c can be adjusted, so that the nail pressing mechanism 100 can adapt to different sizes of battery cell products, thereby improving the versatility of the nail pressing mechanism 100.

[0057] In some embodiments, the first direction a, the second direction b, and the third direction c can be the Z-axis, X-axis, and Y-axis directions respectively. The lifting mechanism 20 can drive the telescopic mechanism 30 and the nail pressing rod 40 to lift in the Z-axis direction; the telescopic mechanism 30 can drive the nail pressing rod 40 to extend and retract in the X-axis direction; and the position of the top plate 13 can be adjusted in the Y-axis direction, and then the position of the entire nail pressing mechanism 100 can be adjusted.

[0058] Please refer to Figure 1 , Figure 2 , Figure 6, in an embodiment of the present application, the nail pressing rod 40 includes a connecting section 41 and a nail pressing section 42; one end of the connecting section 41 is connected to the telescopic mechanism 30; the nail pressing section 42 is connected to the end of the connecting section 41 away from the telescopic mechanism 30, and the width of the nail pressing section 42 is smaller than the width of the connecting section 41, and / or the height of the nail pressing section 42 is smaller than the height of the connecting section 41, and the nail pressing section 42 is configured to press the sealing nail.

[0059] The connecting section 41 is used to connect the nail pressing rod 40 to the telescopic mechanism 30. The nail pressing section 42 is used to press or release the sealing nail to press the sealing nail on the top cover of the battery cell.

[0060] With such a design, by using the nail pressing section 42 with a smaller width and / or height to press the sealing nail, when the telescopic mechanism 30 drives the nail pressing rod 40 to extend above the sealing nail and the lifting mechanism 20 drives the telescopic mechanism 30 and the nail pressing rod 40 to descend, the nail pressing section 42 with a smaller width and / or height can be more easily inserted into the top cover of the battery cell, so that the nail pressing section 42 can be smoothly pressed on the sealing nail. At the same time, the nail pressing section 42 with a smaller width and / or height covers a smaller area when pressing the sealing nail, so that the position where the sealing nail needs to be welded will not be blocked, enabling the welding laser to smoothly weld the sealing nail and the battery cell; and by using the connecting section 41 with a larger width and / or height to connect to the telescopic mechanism 30, the overall stiffness of the nail pressing rod 40 can be improved to enhance the anti-deformation ability of the nail pressing rod 40, and it is not easy to deform when the nail pressing rod 40 presses the sealing nail, which can extend the service life of the nail pressing rod 40.

[0061] Please refer to Figure 2 、 Figure 6 , in an embodiment of the present application, the nail pressing section 42 has a pressing surface, and a profiling nail pressing member 421 is provided on the pressing surface, and the profiling nail pressing member 421 is configured to press the sealing nail.

[0062] The profiling nail pressing member 421 is used to press or release the sealing nail, and the bottom surface shape of the profiling nail pressing member 421 is adapted to the top surface shape of the sealing nail. For example, when the top surface shape of the sealing nail is circular, the profiling nail pressing member 421 can be a cylindrical structure.

[0063] With such a design, when the profiling nail pressing member 421 presses the sealing nail, the bottom surface of the profiling nail pressing member 421 can be fully attached to the top surface of the sealing nail, so as to improve the balance of pressing the sealing nail and enhance the pressing strength of the sealing nail, thereby further solving the problems of flying nails and warping nails that are likely to occur during the welding process of the sealing nail.

[0064] Please refer to Figure 1 、 Figure 6 , in an embodiment of the present application, a clearance groove 411 is provided at the bottom of the end of the connecting section 41 close to the nail pressing section 42, and the clearance groove 411 is configured to avoid the battery cell.

[0065] The clearance slot 411 is used to avoid the battery cell, and the shape of the clearance slot 411 is adapted to the shape of the position where the battery cell needs to be avoided.

[0066] With such a design, the height of one end of the connecting section 41 close to the pressing nail section 42 can be made the same as the height of the pressing nail section 42. In this way, when the pressing nail section 42 presses the sealing nail, the battery cell can be avoided through the position of the clearance slot 411, so as to prevent interference between the connecting section 41 with a higher height and the battery cell, and affect the pressing effect of the pressing nail rod 40 on the sealing nail.

[0067] Please refer to Figure 5 、 Figure 6 In an embodiment of the present application, a positioning groove 321 is provided at one end of the telescopic portion 32 of the telescopic mechanism 30, and the end of the connecting section 41 away from the pressing nail section 42 is inserted into the positioning groove 321.

[0068] With such a design, during the installation process, the end of the connecting section 41 away from the pressing nail section 42 can be inserted into the positioning groove 321 of the telescopic portion 32 to position the pressing nail rod 40, and then the connecting section 41 is further fixed to the telescopic portion 32 of the telescopic mechanism 30 by using screws or other connecting pieces, so as to realize the precise installation of the pressing nail rod 40 and the telescopic mechanism 30.

[0069] Please refer to Figures 7 to 10 The present application also provides a welding device 1000, which includes a battery cell clamping mechanism 200, a welding body, and a pressing nail mechanism 100. The specific structure of the pressing nail mechanism 100 refers to the above embodiment. Since the welding device 1000 of the present application adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. Among them, the battery cell clamping mechanism 200 is configured to fix the battery cell; the welding body includes a welding laser and a welding cover plate 310. The welding laser is configured to weld the sealing nail to the battery cell, and the welding cover plate 310 is configured to cover the non-welding area of the battery cell; the pressing nail mechanism 100 is disposed on the welding cover plate 310 and is located above the battery cell clamping mechanism 200.

[0070] In this embodiment, first, the battery cell is fixed on the battery cell clamping mechanism 200; the non-welding area of the battery cell is covered by using the welding cover plate 310; the telescopic mechanism 30 of the pressing nail mechanism 100 is used to drive the pressing nail rod 40 to extend to the first position so that the pressing nail rod 40 is located above the sealing nail, and then the lifting mechanism 20 of the pressing nail mechanism 100 is used to drive the telescopic mechanism 30 and the pressing nail rod 40 to descend to the second position so that the pressing nail rod 40 presses the sealing nail against the battery cell top cover; then the welding laser is used to weld the sealing nail to the battery cell.

[0071] In some embodiments, the welding cover plate 310 is supported and fixed by the base 320 so that the welding cover plate 310 covers the non-welding area of ​​the battery cell.

[0072] According to some embodiments of the present application, the present application provides a nail pressing mechanism 100, see Figures 1 to 6 The nail pressing mechanism 100 includes a fixed frame 10, a lifting mechanism 20, a telescopic mechanism 30 and a nail pressing rod 40; the lifting mechanism 20 is arranged on the fixed frame 10; the telescopic mechanism 30 is connected to the lifting mechanism 20 by transmission, and the lifting mechanism 20 drives the telescopic mechanism 30 to lift and lower in the first direction a; the nail pressing rod 40 is connected to the telescopic mechanism 30 by transmission, and the telescopic mechanism 30 drives the nail pressing rod 40 to extend and retract in the second direction b, and the second direction b is set at an angle to the first direction a; wherein, under the condition that the telescopic mechanism 30 drives the nail pressing rod 40 to extend to the first position, the lifting mechanism 20 drives the telescopic mechanism 30 and the nail pressing rod 40 to descend to the second position, and the nail pressing rod 40 is configured to compress the sealing nail. The fixing frame 10 is provided with an installation channel 10a, and at least one of the lifting mechanism 20, the telescopic mechanism 30 and the nail rod 40 is inserted into the installation channel 10a; the fixing frame 10 includes a bottom plate 11, two side plates 12 and a top plate 13, and the bottom plate 11, the two side plates 12 and the top plate 13 are enclosed to form the installation channel 10a; the top plate 13 is provided with an adjustment hole 131 extending along the third direction c; the telescopic mechanism 30 is connected to the lifting mechanism 20 through a connecting adjustment member 30a, and the connecting adjustment member 30a can adjust the position of the telescopic mechanism 30 in the second direction b.

[0073] In the technical solution of the embodiment of the present application, the technical solution of the present application designs a nail pressing mechanism 100 capable of pressing a sealing nail. Before welding, the nail pressing rod 40 is driven to extend to the first position through the telescopic mechanism 30, so that the nail pressing rod 40 is located above the sealing nail. Then, the telescopic mechanism 30 and the nail pressing rod 40 are driven to descend to the second position through the lifting mechanism 20, so that the nail pressing rod 40 presses the sealing nail against the top cover of the battery cell, thereby solving the problem of poor flying nails and warping nails easily generated during the welding of the sealing nail. In addition, at least one of the lifting mechanism 20, the telescopic mechanism 30 and the nail pressing rod 40 can be arranged in the profiling installation channel 10a of the fixing frame 10. This can not only make the installation of the lifting mechanism 20 on the fixing frame 10 more reliable, but also improve the installation compactness of each structure, achieve the purpose of small volume design, and enable the installation channel 10a to have enough space for installing the lifting mechanism 20, the telescopic mechanism 30 and the nail pressing rod 40. In addition, the top plate 13 of the fixing frame 10 can be connected to the welding body by using a screw or other connecting parts in cooperation with the adjustment hole 131. The position of the top plate 13 relative to the welding body can be adjusted along the third direction c, and then the position of the entire nail pressing mechanism 100 relative to the welding body in the third direction c can be adjusted. And the position of the telescopic mechanism 30 relative to the lifting mechanism 20 can be adjusted in the second direction b by using the connection adjustment part 30a, so that the nail pressing mechanism 100 can be adapted to battery cell products of different sizes, thereby improving the versatility of the nail pressing mechanism 100.

[0074] The above is only the exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the description and drawings of the present application under the technical concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A nail pressing mechanism, characterized in that: include: Fixed frame; A lifting mechanism, arranged on the fixed frame; A telescopic mechanism, which is transmission-connected to the lifting mechanism, and the lifting mechanism drives the telescopic mechanism to rise and fall in a first direction; A nail pressing rod, which is transmission-connected to the telescopic mechanism, and the telescopic mechanism drives the nail pressing rod to extend and retract in a second direction, and the second direction is arranged at an angle to the first direction; Wherein, under the condition that the telescopic mechanism drives the pressing nail rod to extend to the first position, the lifting mechanism drives the telescopic mechanism and the pressing nail rod to descend to the second position, and the pressing nail rod is configured to press the sealing nail; The telescopic mechanism is connected to the lifting mechanism via a connecting and adjusting member, and the connecting and adjusting member can adjust the position of the telescopic mechanism in the second direction.

2. The nail pressing mechanism according to claim 1, characterized in that: The fixing frame is provided with an installation channel, and at least one of the lifting mechanism, the telescopic mechanism and the nail pressing rod is passed through the installation channel.

3. The nail pressing mechanism according to claim 2, characterized in that: The fixing frame comprises: a bottom plate, the lifting mechanism being connected to the bottom plate; Two side panels, the two side panels are connected to two opposite sides of the bottom panel; A top plate is connected to a side of the two side plates away from the bottom plate, and the bottom plate, the two side plates and the top plate are arranged together to form the installation channel.

4. The nail pressing mechanism according to claim 3, characterized in that: The top plate is configured to be connected to the welding body. The top plate is provided with an adjustment hole. The adjustment hole is extended along a third direction. The third direction is set at an angle with the first direction and is set at an angle with the second direction.

5. The nail pressing mechanism according to any one of claims 1 to 4, characterized in that: The nail pressing rod comprises: A connecting section, one end of which is connected to the telescopic mechanism; A nail pressing section, the nail pressing section is connected to one end of the connecting section away from the telescopic mechanism, the width of the nail pressing section is smaller than the width of the connecting section, and / or the height of the nail pressing section is smaller than the height of the connecting section, and the nail pressing section is configured to compress the sealing nail.

6. The nail pressing mechanism according to claim 5, characterized in that: The nail pressing section has a pressing surface, and the pressing surface is provided with a contoured nail pressing piece, and the contoured nail pressing piece is configured to press the sealing nail.

7. The nail pressing mechanism according to claim 5, characterized in that: A clearance groove is provided at the bottom of one end of the connecting section close to the pressing nail section, and the clearance groove is configured to avoid the battery cell.

8. The nail pressing mechanism according to claim 5, characterized in that: A positioning groove is provided at one end of the telescopic portion of the telescopic mechanism, and an end of the connecting section away from the pressing nail section is inserted into the positioning groove.

9. A welding device, characterized in that: include: A battery cell clamping mechanism, configured to fix the battery cell; A welding body, comprising a welding laser and a welding cover plate, wherein the welding laser is configured to weld the sealing nail to the battery cell, and the welding cover plate is configured to cover a non-welding area of ​​the battery cell; The nail pressing mechanism according to any one of claims 1 to 8, wherein the nail pressing mechanism is arranged on the welding cover plate and is located above the battery cell clamping mechanism.

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