Welding head, welding equipment and battery production line

Abstract

The utility model relates to the technical field of welding, in particular to a welding head, welding equipment and a battery production line. The welding head comprises a focusing module, a first protection module and a second protection module which are sequentially arranged in the axial direction of the welding head, the first protection module comprises a first protection lens, and the first protection lens is arranged between the second protection module and the focusing module to protect the focusing module. The second protection module comprises a first assembly and a second assembly which are detachably connected, the first assembly comprises a second protection lens, and the second assembly is connected with the first protection module. According to the welding head, in the inspection process of the welding head, the focusing lens of the focusing module can be protected through at least one of the first protection lens and the second protection lens, and the probability that the focusing lens is dirty is reduced.

Description

Technical Field

[0001] This application relates to the field of welding technology, specifically to a welding head, welding equipment, and battery production line. Background Technology

[0002] The welding equipment includes a welding head, which includes a focusing module and a protection module. The protection module includes a protective lens for protecting the focusing lens of the focusing module. Since the protective lens needs to be removed frequently, the focusing lens is prone to getting dirty. Utility Model Content

[0003] In view of the above problems, embodiments of this application provide a welding head, welding equipment, and battery production line, which can solve the problem of dirt on the focusing lens of the welding head in the prior art.

[0004] According to a first aspect of the embodiments of this application, an embodiment of this application provides a welding head, which includes a focusing module, a first protection module and a second protection module arranged sequentially along the axial direction of the welding head. The first protection module includes a first protective lens, which is disposed between the second protection module and the focusing module to protect the focusing module. The second protection module includes a first component and a second component that are detachably connected. The first component includes the second protective lens and the second component is connected to the first protection module.

[0005] According to the welding head of this application, by setting a focusing module, a first protection module and a second protection module sequentially along the axial direction of the welding head, wherein the first protection module includes a first protective lens, and the second protection module includes a first component and a second component that are detachably connected, the first component includes a second protective lens, and the second component is connected to the first protection module, then during the inspection of the welding head, the focusing lens of the focusing module can be protected by at least one of the first protective lens and the second protective lens, thereby reducing the probability of the focusing lens becoming dirty.

[0006] The welding head according to the embodiments of this application also has the following additional technical features:

[0007] In some embodiments of this application, the second component has a slot, and the first component is pulled out and installed in the slot, with the first component and the slot being sealed together. This arrangement allows for a convenient detachable connection between the first and second components via the pull-out structure, facilitating the quick removal and repositioning of the first component from and from the slot.

[0008] In some embodiments of this application, the first component further includes a mounting base and a pressure plate connected to each other. The pressure plate cooperates with the mounting base, pressing against the second protective lens to fix the second protective lens on the mounting base. The mounting base has a mounting hole, and the second protective lens is sealed to the mounting hole. This arrangement allows the second protective lens to be installed via the pressure plate and mounting base, reducing the likelihood of contaminant gases from the welding process entering the focusing module through the gap between the mounting hole and the second protective lens, thus protecting the focusing module.

[0009] In some embodiments of this application, the mounting base is provided with a first anti-mistake structure, and the pressure plate is provided with a second anti-mistake structure that cooperates with the first anti-mistake structure. The second anti-mistake structure and the first anti-mistake structure are engaged and connected. This arrangement enables the anti-mistake design during the installation process of the pressure plate, ensuring the correct installation of the pressure plate on the mounting base and reducing the probability of the pressure plate being installed backwards.

[0010] In some embodiments of this application, the first component further includes a magnetic element disposed on the mounting base, and the pressure plate is magnetically connected to the magnetic element. This arrangement allows the pressure plate and the mounting base to be connected via magnetic attraction, facilitating the disassembly and installation of the pressure plate, and consequently, the rapid disassembly and installation of the second protective lens.

[0011] In some embodiments of this application, the second component includes a separate first part and a second part, which form a slot. The first part is sealed to the first protective module, and the second part is sealed to the first part. This configuration reduces the manufacturing cost of the second component, enables a detachable connection between the first and second parts, and reduces the likelihood of contaminant gases entering the second component during the welding process.

[0012] In some embodiments of this application, the second part includes a body portion and a protrusion portion connected to each other. The surface of the protrusion portion facing the first part has a raised structure relative to the body portion. The first part is provided with a clearance area that mates with the protrusion portion. The protrusion portion is connected to the first component. With this configuration, after the protrusion portion contacts the clearance area, it is convenient to process a connecting hole on the protrusion portion to connect the second part and the first component, thereby realizing a detachable connection between the first component and the second component.

[0013] In some embodiments of this application, the second component further includes a sealing cap, with at least one of the first and second portions connected to the sealing cap to seal the contact surface between the protrusion and the clearance area. This configuration achieves a seal between the contact surface between the protrusion and the clearance area, reducing the likelihood of contaminant gases from the welding process entering the second component.

[0014] In some embodiments of this application, the second component further includes a first sealing ring. The surface of the sealing cap facing the protrusion has an annular first sealing groove, and the first sealing ring is disposed within the first sealing groove, with the contact surface located within the space enclosed by the first sealing ring. This arrangement allows for sealing of the contact surface through the first sealing ring located within the first sealing groove, reducing the likelihood of contaminating gases from the welding process entering the second component from the contact surface.

[0015] In some embodiments of this application, the second component further includes a second sealing ring. The first part has a first through hole and a second sealing groove. The first through hole is disposed opposite to the mounting hole, and the second sealing groove is disposed around the first through hole. The second sealing ring is disposed in the second sealing groove. With this arrangement, a seal can be formed between the first protection module and the first part by the second sealing ring disposed in the second sealing groove, reducing the probability that dirty gas during the welding process will pass through the first through hole and affect the focusing module.

[0016] In some embodiments of this application, the second component further includes a third sealing ring. The second part has a second through hole and a third sealing groove facing the first component. The second through hole is opposite to the first through hole, and the third sealing groove surrounds the second through hole. With this configuration, the second through hole can be sealed by the third sealing ring disposed in the third sealing groove, reducing the probability of dirty gas during the welding process entering the second component through the second through hole.

[0017] In some embodiments of this application, at least one of the second and third sealing grooves is a dovetail groove structure. This configuration allows for the installation of the second and / or third sealing rings using the dovetail groove structure, reducing the likelihood of the second and / or third sealing rings detaching during the welding joint assembly process, and improving the reliability and effectiveness of the seal.

[0018] In some embodiments of this application, a first error-proofing structure is provided on the surface of the first component facing away from the pressure plate, and a second error-proofing structure is provided on the second part to cooperate with the first error-proofing structure. The first and second error-proofing structures are engaged and connected, with the first error-proofing structure disposed in a slot. This arrangement, with the first error-proofing structure on the first component and the second error-proofing structure on the second part engaging, allows the first component to be accurately installed in the slot, reducing the probability of the first component being installed backwards.

[0019] In some embodiments of this application, the first protection module further includes an adapter, which is connected to the second component, and at least a portion of the first protective lens is disposed inside the adapter. This configuration allows for the installation of the first protective lens and enables connection with the second protection module via the adapter.

[0020] In some embodiments of this application, the dimension of the second protection module along the axial direction of the welding head is less than or equal to 10 mm, and / or the dimension of the first component along the axial direction of the welding head is less than or equal to 6 mm. This configuration reduces modifications to other components of the welding head, allowing protection of the focusing lens to be achieved directly by adding the second protection module, thus creating a double-layer protection effect with both the first and second protection modules.

[0021] According to a second aspect of the embodiments of this application, the embodiments of this application also provide a welding device, including a mounting frame and a welding head as described in the above embodiments, the welding head being disposed on the mounting frame.

[0022] Since the welding equipment includes all the technical features of the aforementioned welding head, and its effect is the same as described above, it will not be repeated here.

[0023] According to a third aspect of the embodiments of this application, embodiments of this application also provide a battery production line, which includes the welding equipment described in the above embodiments.

[0024] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0026] Figure 1 This is a partial structural schematic diagram of a welding device according to some embodiments of this application;

[0027] Figure 2 for Figure 1 A schematic diagram of a portion of the welding head structure of the welding equipment shown;

[0028] Figure 3 for Figure 2 An exploded view of the second protection module of the welded joint shown in the diagram;

[0029] Figure 4 for Figure 3 A schematic diagram of the structure of the first component of the second protection module of the welded head shown in the figure;

[0030] Figure 5 for Figure 4An exploded view of the first component of the second protection module of the welded joint shown in the diagram;

[0031] Figure 6 for Figure 4 A schematic diagram of the first component of the second protection module of the welded head shown in the second view;

[0032] Figure 7 for Figure 3 An exploded view of the second component of the second protection module of the welded joint shown in the diagram;

[0033] Figure 8 for Figure 7 The diagram shows a partially enlarged view of the second component of the second protection module of the welded joint at point A.

[0034] The reference numerals in the detailed embodiments are as follows:

[0035] 100. Welding equipment;

[0036] 10. Welding joint;

[0037] 1. Focus module;

[0038] 2. First protection module; 21. First protection lens; 22. Adapter;

[0039] 3. Second protection module;

[0040] 31. First component; 311. Second protective lens; 312. Mounting base; 3121. Mounting hole; 3122. First foolproof structure; 3123. Mounting position; 3124. First error-proof structure; 313. Pressure plate; 3131. Second foolproof structure; 314. Magnetic component; 315. First screw component; 316. First handle; 317. Sealing component;

[0041] 32. Second component; 321. Slot; 322. First part; 3221. Clearance area; 3222. First through hole; 3223. Second sealing groove; 323. Second part; 3231. Body part; 3232. Protrusion; 3233. Second through hole; 3234. Third sealing groove; 3235. Positioning element; 3236. Second anti-misalignment structure; 324. Sealing cover; 3241. First sealing groove; 325. First sealing ring; 326. Second sealing ring; 327. Third sealing ring; 328. Fourth sealing ring; 3281. Screw hole;

[0042] 4. Welding nozzle connection assembly;

[0043] 5. Welding nozzle;

[0044] 20. Mounting bracket;

[0045] XX, the axial direction of the welded joint. Detailed Implementation

[0046] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0048] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0049] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0051] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0052] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0053] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0054] In the production process of battery devices, welding equipment is required. The welding equipment includes a welding head, which includes a focusing module and a protection module. The protection module includes a protective lens to protect the focusing lens of the focusing module. Since the protective lens needs to be removed frequently, the focusing electrode is prone to getting dirty.

[0055] To address this issue, this application provides a welding head comprising a focusing module, a first protection module, and a second protection module arranged sequentially along the axial direction of the welding head. The first protection module includes a first protective lens disposed between the second protection module and the focusing module to protect the focusing module. The second protection module includes a detachably connected first component and a second component. The first component includes the second protective lens, and the second component is connected to the first protection module. During inspection of the welding head, at least one of the first and second protective lenses can protect the focusing lens of the focusing module, reducing the likelihood of contamination of the focusing lens.

[0056] The welding head of this application can be used in welding scenarios that require welding wire and shielding gas, and can also be used in laser welding equipment, etc.

[0057] For ease of explanation, please refer to the following embodiments. Figures 1-8 , Figure 1 This is a partial structural schematic diagram of a welding device 100 according to some embodiments of this application. The welding device 100 includes a mounting frame 20 and a welding head 10, wherein the welding head 10 is fixed on the mounting frame 20.

[0058] The welding equipment 100 here can be a laser welding product or a welding equipment 100 using welding wire. The welding head 10 can be fixed on the mounting frame 20 or can move on the mounting frame 20. It is understood that the welding equipment 100 here also includes cooling components, control components, and a laser generator, etc., to realize the laser welding process. These components will not be described in detail here.

[0059] The following will combine Figures 2 to 8 The structure of the welding head 10 is described in detail below. The welding head 10 includes a focusing module 1, a first protection module 2, and a second protection module 3 arranged sequentially along the axial direction of the welding head 10. The first protection module 2 includes a first protective lens 21, which is disposed between the second protection module 3 and the focusing module 1 to protect the focusing module 1. The second protection module 3 includes a first component 31 and a second component 32 that are detachably connected. The first component 31 includes a second protective lens 311, and the second component 32 is connected to the first protection module 2.

[0060] like Figure 2 As shown, the axial direction of the welding head 10 is Figure 2 In the XX direction, the laser beam emitted from the welding head 10 is directed toward the workpiece to achieve laser welding. The focusing module 1 here includes a focusing lens (not shown), which is located inside the focusing module 1 and is used to compress and converge the diverging laser beam into a small spot with highly concentrated energy, thereby achieving high-precision laser processing.

[0061] Normally, the welding head 10 only has a first protection module 2, which protects the focusing lens through a first protective lens 21. However, since the first protective lens 21 needs to be frequently removed, the focusing module 1 is prone to becoming dirty. In this application, a second protection module 3 is added. The second protection module 3 includes a detachably connected first component 31 and a second component 32. The first component 31 includes a second protective lens 311, and the second component 32 is connected to the first protection module 2. Therefore, during the inspection of the lens, at least one of the first protective lens 21 and the second protective lens 311 can protect the focusing lens of the focusing module 1, reducing the probability of the focusing lens becoming dirty.

[0062] Specifically, during the inspection of the welding head 10, after the second protective lens 311 is pulled out for inspection, the focusing lens can be protected by the first protective lens 21. If the first protective lens 21 is pulled out for inspection, the focusing lens can be protected by the second protective lens 311. In other cases, the focusing lens can be protected by both the first protective lens 21 and the second protective lens 311, so that the focusing lens is always in a protected state.

[0063] In addition, the first component 31 and the second component 32 are detachably connected, which can be done by snap-fit ​​or screw connection. After separating the first component 31 and the second component 32, the second protective lens 311 of the first component 31 can be taken out, which is convenient for the second protective lens 311 to be inspected.

[0064] According to the welding head 10 of this application, a focusing module 1, a first protection module 2, and a second protection module 3 are sequentially arranged along the axial direction of the welding head 10. The first protection module 2 includes a first protective lens 21, and the second protection module 3 includes a first component 31 and a second component 32 that are detachably connected. The first component 31 includes a second protective lens 311, and the second component 32 is connected to the first protection module 2. During the inspection of the welding head 10, at least one of the first protective lens 21 and the second protective lens 311 can be used to protect the focusing lens of the focusing module 1, thereby reducing the probability of the focusing lens becoming dirty.

[0065] Optionally, such as Figure 2 and Figure 3 As shown, the second component 32 has a slot 321 inside, and the first component 31 is installed in the slot 321 by a pull-out method, and the first component 31 is sealed to the slot 321.

[0066] The second component 32 can be a one-piece structure, with a slot 321 inside. The first component 31 has a drawer-type structure, which can be placed in the slot 321 or pulled out from the slot 321 by sliding. To reduce the chance of dirty gas entering the slot 321 during welding, the first component 31 is sealed to the slot 321. The sealing connection can be achieved by using a sealing ring, a stepped sealing surface, or sealant.

[0067] The first component 31 and the second component 32 are connected by a pull-out structure, which facilitates the detachable connection between the first component 31 and the second component 32, and makes it easy to quickly pull the first component 31 out of the slot 321 and quickly reset the first component 31.

[0068] The following will combine Figures 4 to 6The specific structure of the first component 31 will be described in detail.

[0069] Optionally, such as Figure 4 and Figure 5 As shown, the first component 31 also includes a mounting base 312 and a pressure plate 313 connected to each other. The pressure plate 313 cooperates with the mounting base 312 and presses against the second protective lens 311 to fix the second protective lens 311 on the mounting base 312. The mounting base 312 is provided with a mounting hole 3121, and the second protective lens 311 is sealed to the mounting hole 3121.

[0070] The mounting hole 3121 on the mounting base 312 is a circular through hole, and an annular groove is formed around the mounting hole 3121 to facilitate the placement of the sealing structure. After the second protective lens 311 is sealed and connected to the mounting hole 3121, the laser passes through the second protective lens 311 and is then directed towards the workpiece. The sealing connection between the second protective lens 311 and the mounting hole 3121 can be achieved using a sealing ring structure. When the second protective lens 311 is installed on the mounting hole 3121, a seal is achieved through the sealing ring, thereby realizing the seal between the second protective lens 311 and the mounting hole 3121.

[0071] The first component 31 here can install the second protective lens 311 through the pressure plate 313 and the mounting base 312, reducing the probability of dirty gas during the welding process entering the focusing module 1 through the gap between the mounting hole 3121 and the second protective lens 311, thus forming protection for the focusing module 1.

[0072] Optionally, the mounting base 312 is provided with a first anti-foolproof structure 3122, and the pressure plate 313 is provided with a second anti-foolproof structure 3131 that cooperates with the first anti-foolproof structure 3122. The second anti-foolproof structure 3131 and the first anti-foolproof structure 3122 are engaged and connected.

[0073] The first foolproof structure 3122 can be a protruding structure, and correspondingly, the second foolproof structure 3131 is a notched structure. The first foolproof structure 3122 and the second foolproof structure 3131 can be inserted and engaged with each other. Optionally, the number of the first foolproof structure 3122 can be one, two or more, and the number of the second foolproof structure 3131 can be the same as the number of the first foolproof structure 3122.

[0074] exist Figure 4In this design, there are two first anti-mistake structures 3122, located on opposite sides of the mounting hole 3121. Correspondingly, there are also two second anti-mistake structures 3131. The pressure plate 313 is a rectangular plate, with the two second anti-mistake structures 3131 located at opposite ends of the rectangular plate. The two first anti-mistake structures 3122 can be of different sizes to better prevent mistakes, and similarly, the two second anti-mistake structures 3131 can also be of different sizes to facilitate their use in conjunction with the corresponding first anti-mistake structures 3122.

[0075] The embodiments of this application, by setting a first anti-mistake structure 3122 and a second anti-mistake structure 3131, can realize the anti-mistake design of the installation process of the pressure plate 313, realize the correct installation of the pressure plate 313 on the mounting base 312, and reduce the probability of the pressure plate 313 being installed backwards.

[0076] Understandably, the mounting base 312 can also be provided with a marking area, such as a "this side up" marking. Correspondingly, the pressure plate 313 can also be provided with a marking area, such as a "this side up" marking, to reduce the chance of the operator installing the pressure plate 313 and the mounting base 312 backwards during the assembly process.

[0077] Optionally, the first component 31 further includes a magnetic element 314, which is disposed on the mounting base 312, and the pressure plate 313 is magnetically connected to the magnetic element 314.

[0078] As mentioned earlier, the pressure plate 313 has a rectangular plate structure. Therefore, multiple magnetic components 314 can be used. The magnetic components 314 are detachably connected to the mounting base 312. Specifically, mounting positions 3123 can be provided on the mounting base 312, and one magnetic component 314 can be installed in each mounting position 3123. The magnetic components 314 can be fixed with screws. Figure 5 In the middle, there are four mounting positions 3123, therefore, there are also four magnetic components 314. The four magnetic components 314 form a rectangular structure, so that the four magnetic components 314 can form a magnetic attraction on the pressure plate 313 from different positions, so that the pressure plate 313 can press against the mounting base 312.

[0079] The pressure plate 313 here can adopt a magnetic attraction structure opposite to that of the magnetic component 314, or it can be made of a material that can be magnetized, such as steel products, such as carbon steel or stainless steel that can be magnetized.

[0080] In the embodiments of this application, by placing the magnetic component 314 on the mounting base 312 and magnetically connecting the pressure plate 313 to the magnetic component 314, the pressure plate 313 and the mounting base 312 can be connected by magnetic attraction, thereby facilitating the disassembly and installation of the pressure plate 313, and thus facilitating the quick disassembly and installation of the second protective lens 311.

[0081] In addition, the connection between the pressure plate 313 and the mounting base 312 via magnetic attraction can also make the thickness of the first component 31 thinner, thereby reducing the total thickness of the second protection module 3.

[0082] Optionally, such as Figure 5 As shown, the first component 31 also includes a seal 317, which is a circular ring structure that can achieve a seal between the second protective lens 311 and the mounting base 312, reducing the probability of dirty gas from the welding process contaminating the focusing lens through the gap between the second protective lens 311 and the mounting base 312.

[0083] Optionally, such as Figure 5 As shown, the mounting base 312 is provided with a first handle 316, which can be a door handle structure, so that the user can pull the first component 31 out of the slot 321 through the first handle 316.

[0084] The following will combine Figure 7 and Figure 8 The structure of the second component 32 will be described in detail.

[0085] Optionally, such as Figure 7 As shown, the second component 32 includes a first part 322 and a second part 323 that are separately arranged. The first part 322 and the second part 323 form a slot 321. The first part 322 is sealed to the first protection module 2, and the second part 323 is sealed to the first part 322.

[0086] The first part 322 and the second part 323 here adopt a separate structure. After being made separately, they are assembled together to form the second component 32. The first part 322 and the second part 323 form a slot 321. The slot 321 can be formed by machining a groove on the second part 323, or by machining a groove on the first part 322, or by machining grooves on both the first part 322 and the second part 323 at the same time to form the structure of the slot 321.

[0087] The sealing connection between the second part 323 and the first part 322 can be achieved using various sealing methods, such as using a sealing ring or a stepped sealing structure. Adopting a separate structure for the first part 322 and the second part 323 reduces the manufacturing cost of the second component 32, allows for a detachable connection between the first part 322 and the second part 323, and reduces the likelihood of contaminated gases entering the second component 32 during the welding process.

[0088] Optionally, such as Figure 7 and Figure 8 As shown, the second part 323 includes a body part 3231 and a protrusion 3232 that are connected to each other. The surface of the protrusion 3232 facing the first part 322 has a protruding structure relative to the body part 3231. The first part 322 is provided with a clearance area 3221 that cooperates with the protrusion 3232. The protrusion 3232 is connected to the first component 31.

[0089] Specifically, the peripheral edge of the second part 323 is in contact with the circumferential edge of the first part 322. Therefore, in order to accommodate the protrusion 3232, the first part 322 is provided with a clearance area 3221 that cooperates with the protrusion 3232. The clearance area 3221 is in the shape of a notch. The height of the protrusion 3232 is greater than the height of the body part 3231. Compared with the structure without the protrusion 3232, this structure can increase the area of ​​the protrusion 3232, making it easier to process connecting holes on the protrusion 3232, thereby realizing a detachable connection between the second part 323 and the first component 31.

[0090] The embodiments of this application enable the protrusion 3232 to contact the avoidance area 3221, and then a connection hole can be easily machined on the protrusion 3232 to connect the second part 323 and the first component 31, thereby realizing a detachable connection between the first component 31 and the second component 32.

[0091] It is important to note that since the protrusion 3232 is a protruding structure relative to the body 3231, in order to achieve better sealing, the second component 32 also includes a sealing cap 324. At least one of the first part 322 and the second part 323 is connected to the sealing cap 324 to seal the contact surface between the protrusion 3232 and the clearance area 3221.

[0092] It is understandable that the contact surface between the protrusion 3232 and the clearance area 3221 can be achieved by a sealing ring. However, since the protrusion 3232 has a stepped structure, the sealing ring is not easy to install. Therefore, a sealing cover 324 is added here. The sealing cover 324 can be sealed to at least one of the first part 322 and the second part 323 to achieve the sealing of the contact surface between the protrusion 3232 and the clearance area 3221.

[0093] The embodiments of this application, by providing a sealing cover 324, can conveniently seal the contact surface between the protrusion 3232 and the clearance area 3221 through the structure of the sealing cover 324, thereby reducing the probability of dirty gas entering the second component 32 during the welding process.

[0094] Considering that the protrusions 3232 are formed on both sides of the second part 323 in the width direction, there are two sealing caps 324, and the two sealing caps 324 seal the two protrusions 3232 respectively.

[0095] Optionally, such as Figure 7 and Figure 8 As shown, the second component 32 also includes a first sealing ring 325. The surface of the sealing cover 324 facing the protrusion 3232 is provided with an annular first sealing groove 3241. The first sealing ring 325 is disposed in the first sealing groove 3241, and the contact surface is located in the space enclosed by the first sealing ring 325.

[0096] The first sealing groove 3241 here can be a rectangular ring or a circular ring, as long as it matches the shape and size of the first sealing ring 325. Figure 7 In the first sealing groove 3241, the first sealing ring 325 is a rectangular ring structure. When the first sealing ring 325 is in a sealed state, the contact surface is entirely located within the area enclosed by the first sealing ring 325, thus the first sealing ring 325 can seal all the contact surfaces.

[0097] The embodiments of this application can achieve sealing of the contact surface by using a first sealing ring 325 provided in the first sealing groove 3241, thereby reducing the probability of dirty gas from the welding process entering the second component 32 from the contact surface.

[0098] It is understandable that there are two first sealing rings 325 here. The two first sealing rings 325 are used by the two sealing caps 324 to seal the contact surface between the protrusion 3232 and the clearance area 3221.

[0099] Optionally, such as Figure 7 As shown, the second component 32 also includes a second sealing ring 326. The first part 322 is provided with a first through hole 3222 and a second sealing groove 3223. The first through hole 3222 is disposed opposite to the mounting hole 3121. The second sealing groove 3223 is disposed around the first through hole 3222. The second sealing ring 326 is disposed in the second sealing groove 3223.

[0100] The first part 322 is located above the second part 323. The second sealing groove 3223 is set facing the first protection module 2. The second sealing ring 326 is set in the second sealing groove 3223 to achieve the sealing effect.

[0101] The second sealing ring 326 here has a rectangular ring structure, and the first through hole 3222 is located in the area enclosed by the second sealing groove 3223.

[0102] In the embodiments of this application, by placing the second sealing ring 326 in the second sealing groove 3223, wherein the second sealing groove 3223 surrounds the first through hole 3222 and the first through hole 3222 is opposite to the mounting hole 3121, the second sealing ring 326 disposed in the second sealing groove 3223 can form a seal between the first protection module 2 and the first part 322, thereby reducing the probability that dirty gas during the welding process will pass through the first through hole 3222 and affect the focusing module 1.

[0103] Optionally, such as Figure 7 As shown, the second component 32 also includes a third sealing ring 327. The second part 323 is provided with a second through hole 3233 and a third sealing groove 3234 facing the first component 31. The second through hole 3233 is disposed opposite to the first through hole 3222, and the third sealing groove 3234 is disposed around the second through hole 3233.

[0104] The shape of the third sealing ring 327 is consistent with the structure of the third sealing groove 3234. Since the third sealing groove 3234 needs to avoid the opening of the slot 321, the third sealing ring 327 here is a non-closed structure.

[0105] The embodiments of this application provide a third sealing ring 327 and a third sealing groove 3234. The second through hole 3233 is positioned opposite to the first through hole 3222, and the third sealing groove 3234 surrounds the second through hole 3233. The third sealing ring 327 positioned within the third sealing groove 3234 can seal the second through hole 3233, reducing the probability of dirty gas from the welding process entering the second component 32 through the second through hole 3233.

[0106] It is important to emphasize that the axes of the mounting hole 3121, the first through hole 3222, and the second through hole 3233 are coaxial to reduce the chance of the laser being blocked during propagation.

[0107] Optionally, at least one of the second sealing groove 3223 and the third sealing groove 3234 is a dovetail-shaped structure. That is, the second sealing groove 3223 can adopt a dovetail-shaped sealing method with the second sealing ring 326, or the third sealing groove 3234 can adopt a dovetail-shaped sealing method with the third sealing ring 327, or the second sealing groove 3223 can adopt a dovetail-shaped sealing method with the second sealing ring 326, and the third sealing groove 3234 can adopt a dovetail-shaped sealing method with the third sealing ring 327.

[0108] This application, by setting at least one of the second sealing groove 3223 and the third sealing groove 3234 as a dovetail groove structure, can utilize the dovetail groove structure to achieve the installation of the second sealing ring 326 and / or the third sealing ring 327, reducing the probability of the second sealing ring 326 and / or the third sealing ring 327 falling off during the assembly of the welding head 10, and making the seal more reliable and improving the sealing effect. Optionally, as Figure 6 As shown, the surface of the first component 31 facing away from the pressure plate 313 is provided with a first error-proof structure 3124, such as... Figure 7 As shown, the second part 323 is provided with a second error-proofing structure 3236 that cooperates with the first error-proofing structure 3124. The first error-proofing structure 3124 and the second error-proofing structure 3236 are engaged and connected. The first error-proofing structure 3124 is located in the slot 321.

[0109] The embodiments of this application provide a first error-proofing structure 3124 on the surface of the first component 31 facing away from the pressure plate 313, and a second error-proofing structure 3236 that cooperates with the first error-proofing structure 3124 on the second part 323. The first error-proofing structure 3124 on the first component 31 and the second error-proofing structure 3236 on the second part 323 engage with each other, which allows the first component 31 to be accurately installed in the slot 321, reducing the probability of the first component 31 being installed backwards.

[0110] Optionally, such as Figure 3 and Figure 7 As shown, the second component 32 also includes a fourth sealing ring 328, which seals the opening of the slot 321. That is, the fourth sealing ring 328 is located in the area between the mounting base 312 and the protrusion 3232 of the second part, reducing the probability of contaminating gases from the welding process entering the second component 32 through the opening of the slot 321. The fourth sealing ring 328 has two screw holes 3281, facilitating a detachable connection between the first component 31 and the second component 32 using two first screws 315.

[0111] Specifically, such as Figure 5 and Figure 7 As shown, after the first component 31 is inserted into the slot 321, the first screw 315 passes through the screw holes 3281 of the mounting base 312 and the fourth sealing ring 328 in sequence and is inserted into the connection hole of the protrusion 3232 to realize the connection between the first component 31 and the second component 32, thereby reducing the probability of the first component 31 falling out of the slot 321 of the second component 32.

[0112] Optionally, such as Figure 2As shown, the welding head 10 also includes a welding nozzle connecting assembly 4 and a welding nozzle 5. The welding nozzle connecting assembly 4 is connected to the second protection module 3, and the welding nozzle is connected to the welding nozzle connecting assembly 4. The welding nozzle 5 is located at the end of the welding head 10, and the laser is emitted from the internal channel of the welding nozzle 5 to the workpiece.

[0113] Optionally, the first protection module 2 further includes an adapter 22, which is connected to the second component 32, and at least part of the first protective lens 21 is disposed inside the adapter 22.

[0114] Understandably, the adapter 22 is also provided with a channel through which the laser can pass, so that the laser generated by the laser generator can pass through the first protective lens 21 on the adapter 22 and the second protective lens 311 of the first component 31 and then pass through the welding nozzle of the welding head 10.

[0115] In the embodiments of this application, by setting up an adapter 22 and connecting the adapter 22 to the second component 32, wherein at least a portion of the first protective lens 21 is disposed inside the adapter 22, the installation of the first protective lens 21 can be realized, and the connection between the adapter 22 and the second protection module 3 can be realized.

[0116] Optionally, the surface of the second part 323 facing the first part 322, that is, the upper surface of the second part 323, is provided with a positioning element 3235. The positioning element 3235 enables the second part 323 to be positioned and installed with the first part 322, thereby improving the assembly efficiency of the second part 323 and the first part 322. The number of positioning elements 3235 can be one or more. Correspondingly, the first part 322 is provided with positioning holes, and the positioning function is achieved by the insertion of the positioning element 3235 into the positioning holes.

[0117] It is important to note that the focusing lens of the focusing module 1 of the welding head 10 is always protected and not exposed to air, thus reducing the likelihood of the focusing lens becoming contaminated. Since the second protective lens 311 is closer to the welding nozzle, it requires relatively more frequent maintenance. When maintaining the second protective lens 311, the first protective lens 21 can provide additional protection for the focusing lens. Considering that the first protective lens 21 may also require maintenance after prolonged use of the welding head 10, it can be sealed with masking tape after removal. In this case, the focusing lens will be protected by the masking tape and the second protective lens 311, preventing it from being exposed to air.

[0118] Optionally, the second protection module 3 has a dimension of less than or equal to 10 mm along the axial direction of the welding head 10, such as 8 mm or 9 mm, and the first component 31 has a dimension of less than or equal to 6 mm along the axial direction of the welding head 10, such as 6 mm, 5 mm or 4 mm.

[0119] This configuration reduces the need for modifications to other components of the welding head 10, such as the focusing module 1, the first protection module 2, and the welding nozzle connection assembly 4. The focusing lens can be protected directly by adding the second protection module 3, thus achieving a double-layer protection effect of the first protection module 2 and the second protection module 3.

[0120] An embodiment of this application also provides a battery production line, which includes welding equipment 100, wherein the welding equipment 100 can perform laser welding of electrode sheets.

[0121] Optionally, the battery production line is also equipped with winding equipment and film-applying equipment to perform winding and film-applying processes, which will not be described in detail here.

[0122] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0123] A first aspect of this application provides a welding head 10, which includes a focusing module 1, a first protection module 2, and a second protection module 3 arranged sequentially along the axial direction of the welding head 10. The first protection module 2 includes a first protective lens 21 disposed between the second protection module 3 and the focusing module 1 to protect the focusing module 1. The second protection module 3 includes a detachably connected first component 31 and a second component 32. The first component 31 includes a second protective lens 311, and the second component 32 is connected to the first protection module 2. Further, the second component 32 has a slot 321, in which the first component 31 is pulled out and installed in a slot 321, and the first component 31 is sealed to the slot 321. Furthermore, the first component 31 also includes a mounting base 312 and a pressure plate 313 connected to each other. The pressure plate 313 cooperates with the mounting base 312 and presses against the second protective lens 311 to fix the second protective lens 311 on the mounting base 312. The mounting base 312 is provided with a mounting hole 3121, and the second protective lens 311 is sealed to the mounting hole 3121. Furthermore, the mounting base 312 is provided with a first anti-foolproof structure 3122, and the pressure plate 313 is provided with a second anti-foolproof structure 3131 that cooperates with the first anti-foolproof structure 3122. The second anti-foolproof structure 3131 and the first anti-foolproof structure 3122 are engaged. Furthermore, the first component 31 also includes a magnetic element 314, which is disposed on the mounting base 312, and the pressure plate 313 is magnetically connected to the magnetic element 314. Further, the second component 32 includes a first part 322 and a second part 323 that are separately configured. The first part 322 and the second part 323 form a slot 321. The first part 322 is sealed to the first protection module 2, and the second part 323 is sealed to the first part 322. Further, the second part 323 includes a body part 3231 and a protrusion 3232 that are connected to each other. The surface of the protrusion 3232 facing the first part 322 has a protruding structure relative to the body part 3231. The first part 322 is provided with a clearance area 3221 that mates with the protrusion 3232. The protrusion 3232 is connected to the first component 31. Further, the second component 32 also includes a sealing cover 324. At least one of the first part 322 and the second part 323 is connected to the sealing cover 324 to seal the contact surface between the protrusion 3232 and the clearance area 3221. Furthermore, the second component 32 also includes a first sealing ring 325. The surface of the sealing cover 324 facing the protrusion 3232 is provided with an annular first sealing groove 3241. The first sealing ring 325 is disposed in the first sealing groove 3241, and the contact surface is located in the space enclosed by the first sealing ring 325.Furthermore, the second component 32 also includes a second sealing ring 326. The first portion 322 has a first through hole 3222 and a second sealing groove 3223. The first through hole 3222 is opposite to the mounting hole 3121, and the second sealing groove 3223 surrounds the first through hole 3222. The second sealing ring 326 is disposed in the second sealing groove 3223. Furthermore, the second component 32 also includes a third sealing ring 327. The second portion 323 has a second through hole 3233 and a third sealing groove 3234 facing the first component 31. The second through hole 3233 is opposite to the first through hole 3222, and the third sealing groove 3234 surrounds the second through hole 3233. Furthermore, at least one of the second sealing groove 3223 and the third sealing groove 3234 has a dovetail groove structure. Furthermore, the first component 31 has a first error-proof structure 3124 on its surface opposite to the pressure plate 313, and the second part 323 has a second error-proof structure 3236 that cooperates with the first error-proof structure 3124. The first error-proof structure 3124 and the second error-proof structure 3236 are engaged and connected, and the first error-proof structure 3124 is disposed in the slot 321. Furthermore, the first protection module 2 also includes an adapter 22, which is connected to the second component 32, and at least a portion of the first protective lens 21 is disposed inside the adapter 22. Furthermore, the dimension of the second protection module 3 along the axial direction of the welding head 10 is less than or equal to 10 mm, and the dimension of the first component 31 along the axial direction of the welding head 10 is less than or equal to 6 mm.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this 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. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A welding head, characterized in that, The welding head includes a focusing module, a first protection module, and a second protection module arranged sequentially along the axial direction of the welding head. The first protection module includes a first protective lens, which is disposed between the second protection module and the focusing module to protect the focusing module. The second protection module includes a first component and a second component that are detachably connected. The first component includes a second protective lens, and the second component is connected to the first protection module.

2. The welding head according to claim 1, characterized in that, The second component has a slot, and the first component is installed in the slot by a pull-out method, and the first component is sealed to the slot.

3. The welding joint according to claim 2, characterized in that, The first component also includes a mounting base and a pressure plate connected to each other. The pressure plate cooperates with the mounting base and presses against the second protective lens to fix the second protective lens on the mounting base. The mounting base is provided with a mounting hole, and the second protective lens is sealed to the mounting hole.

4. The welding joint according to claim 3, characterized in that, The mounting base is provided with a first anti-mistake structure, and the pressure plate is provided with a second anti-mistake structure that cooperates with the first anti-mistake structure. The second anti-mistake structure and the first anti-mistake structure are engaged and connected.

5. The welding joint according to claim 3, characterized in that, The first component also includes a magnetic element, which is disposed on the mounting base, and the pressure plate is magnetically connected to the magnetic element.

6. The welding joint according to claim 3, characterized in that, The second component includes a first part and a second part that are separately configured, the first part and the second part forming the slot, the first part being sealed to the first protection module, and the second part being sealed to the first part.

7. The welding joint according to claim 6, characterized in that, The second part includes a body part and a protrusion part that are connected to each other. The surface of the protrusion part facing the first part is raised relative to the body part. The first part is provided with a clearance area that cooperates with the protrusion part. The protrusion part is connected to the first component.

8. The welding joint according to claim 7, characterized in that, The second component also includes a sealing cap, at least one of the first portion and the second portion being connected to the sealing cap to seal the contact surface between the protrusion and the clearance area.

9. The welding joint according to claim 8, characterized in that, The second component also includes a first sealing ring. The surface of the sealing cover facing the protrusion has an annular first sealing groove. The first sealing ring is disposed in the first sealing groove, and the contact surface is located within the space enclosed by the first sealing ring.

10. The welding joint according to claim 6, characterized in that, The second component also includes a second sealing ring. The first part is provided with a first through hole and a second sealing groove. The first through hole is disposed opposite to the mounting hole. The second sealing groove is disposed around the first through hole. The second sealing ring is disposed in the second sealing groove.

11. The welding head according to claim 10, characterized in that, The second component also includes a third sealing ring. The second part is provided with a second through hole and a third sealing groove facing the first component. The second through hole is disposed opposite to the first through hole, and the third sealing groove is disposed around the second through hole.

12. The welding joint according to claim 11, characterized in that, At least one of the second sealing groove and the third sealing groove is a dovetail groove structure.

13. The welded joint according to any one of claims 6 to 12, characterized in that, The first component has a first error-proof structure on its surface away from the pressure plate, and the second part has a second error-proof structure that cooperates with the first error-proof structure. The first error-proof structure and the second error-proof structure are engaged and connected, and the first error-proof structure is located in the slot.

14. The welded joint according to any one of claims 1 to 12, characterized in that, The first protection module further includes an adapter, which is connected to the second component, and at least a portion of the first protective lens is disposed inside the adapter.

15. The welded joint according to any one of claims 1 to 12, characterized in that, The second protection module has a dimension of less than or equal to 10 mm along the axial direction of the weld head, and / or the first component has a dimension of less than or equal to 6 mm along the axial direction of the weld head.

16. A welding device, characterized in that, include: Mounting rack; as well as The welding head as described in any one of claims 1 to 15, wherein the welding head is disposed on the mounting bracket.

17. A battery production line, characterized in that, Including the welding equipment as described in claim 16.

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