Welding equipment

Abstract

The embodiment of the invention discloses welding equipment. The welding equipment comprises a welding nozzle, the welding nozzle comprises a welding channel and a dust collection connector, the dust collection connector is communicated with the welding channel through the side wall of the welding channel, and the welding channel corresponds to a welding area of a to-be-welded assembly so that the welding area can be welded in the welding channel; the dust collection pipeline is connected with the dust collection connector, the dust collection pipeline is used for collecting dust generated in the welding process through the dust collection connector, and the material of the dust collection pipeline comprises metal. According to the welding equipment, dust generated in the welding process can be collected in time, and the welding effect is improved.

Description

Technical Field

[0001] The present application relates to the field of battery production and manufacturing, and more specifically, to a welding device. Background Art

[0002] With the continuous advancement of battery technology, various new energy industries that use batteries as energy storage devices have developed rapidly. The development of battery technology must take into account multiple design factors at the same time, such as performance parameters such as energy density, cycle life, discharge capacity, charge and discharge rate, and battery processing efficiency. The battery includes multiple battery cells connected in series and / or in parallel, and each battery cell has an electrode terminal with different polarity. In order to achieve series and parallel connection between multiple battery cells, the electrode terminals need to be electrically connected to the busbar by welding.

[0003] A large amount of dust is generated during the welding process of the electrode terminal and the busbar component. The metal particles included in the dust are easily left on the welding area, affecting the welding effect. Therefore, how to effectively remove the dust generated during the welding process is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The embodiment of the present application provides a welding device that can collect dust generated during the welding process in a timely manner to improve the welding effect.

[0005] In a first aspect, a welding device is provided, which includes: a welding nozzle, which includes a welding channel and a dust suction interface, the dust suction interface is connected to the welding channel through a side wall of the welding channel, the welding channel corresponds to a welding area of ​​a component to be welded, so that the welding area is welded in the welding channel; a dust suction pipeline, the dust suction pipeline is connected to the dust suction interface, the dust suction pipeline is used to absorb dust generated during welding through the dust suction interface, and the material of the dust suction pipeline includes metal.

[0006] Therefore, the vacuum duct of the welding equipment of the embodiment of the present application can absorb the dust generated during the welding process, and the material of the vacuum duct includes metal, which can enhance the structural strength of the vacuum duct. For example, the dust can be absorbed by reducing the air pressure inside the vacuum duct. The vacuum duct made of metal is not easy to deform, for example, the vacuum duct is not easy to be damaged or bent, which can increase the service life of the vacuum duct; the interior of the vacuum duct is not easy to produce convex or step-shaped deformation, and the inner wall of the vacuum duct can be relatively smooth, which reduces wind resistance and improves the efficiency of dust absorption, thereby reducing the impact of dust on the welding process and welding effect.

[0007] In some embodiments, the welding device further includes: a pressing plate, the pressing plate is located on the side of the welding nozzle away from the welding area, the pressing plate is provided with a first through hole, the first through hole is connected to the welding channel, and the pressing plate is used to fix the welding nozzle. The welding nozzle is installed on the side of the pressing plate close to the welding area, and the pressing plate can drive the welding nozzle to move. After the pressing plate drives the welding nozzle close to the welding area, the pressing plate can also be used to press the welding nozzle against the assembly to be welded to reduce the relative movement between the welding nozzle and the assembly to be welded, thereby reducing the misalignment between the welding channel and the welding area, and improving the accuracy of the welding position. The pressing plate is provided with a first through hole, and the first through hole can be connected to the welding channel, so that the first through hole can expose the welding area, that is, the pressing plate will not block the welding area, so that the welding device can weld the welding area through the first through hole and the welding channel.

[0008] In some embodiments, the pressure plate is provided with a second through hole, and the dust suction pipeline passes through the second through hole to be connected to the dust suction interface, then at least part of the dust suction pipeline is located on the side of the pressure plate away from the welding area, thereby reducing the space occupied by the dust suction pipeline on the side of the pressure plate close to the welding area, reducing the influence of the dust suction pipeline on the position of the welding component and the welding nozzle, and helping to improve space utilization.

[0009] In some embodiments, the dust suction pipeline includes a connecting pipe and a collecting pipe, the first end of the connecting pipe is connected to the dust suction interface, the second end of the connecting pipe is connected to the second through hole, and the collecting pipe is in communication with the second through hole; the collecting pipe is used to collect the dust that passes through the dust suction interface, the connecting pipe and the second through hole in sequence. Considering that the dust suction pipeline passes through the second through hole of the pressing plate, at least part of the second through hole is used to transmit dust to the collecting pipe, which can save part of the dust suction pipeline structure and reduce the complexity of the structure of the welding equipment.

[0010] In some embodiments, the second end is located in the second through hole, and at least a portion of the connecting tube moves in the second through hole along the axial direction of the second through hole, so that the welding nozzle is close to and / or away from the welding area. When the pressing plate is in a preset position, if it is necessary to adjust the distance between the welding nozzle and the welding area so that the welding nozzle moves between the pressing plate and the welding area, at least a portion of the connecting tube is located in the second through hole, and the connecting tube can move along the axial direction Z of the second through hole, so that the connecting tube and the second through hole can be kept connected to each other, so that dust can enter the collection tube through the connecting tube and the second through hole, and the dust generated during the welding process can be collected in time.

[0011] In some embodiments, the welding equipment includes a plurality of welding nozzles arranged along a first direction, the dust suction pipeline includes a plurality of connecting pipes respectively connected to a plurality of dust suction interfaces of the plurality of welding nozzles, the collecting pipe corresponds to the plurality of connecting pipes, and the collecting pipe is used to collect dust passing through the plurality of connecting pipes. The plurality of welding nozzles corresponds to the plurality of connecting pipes, so that the dust generated in the welding channel of each welding nozzle can be absorbed in time, reducing the related influence between different welding nozzles; and the same collecting pipe is arranged to be connected with the plurality of connecting pipes, so that each collecting pipe can collect dust passing through the plurality of connecting pipes, improve the integration degree of the dust suction pipeline, reduce the pipeline of the dust suction pipeline, and then simplify the structure of the dust suction pipeline for easy processing and installation.

[0012] In some embodiments, a blocking structure is provided in the collection pipe, and the blocking structure is used to separate the collection pipe into two chambers, and the two chambers are used to collect dust passing through different connecting pipes. The blocking structure can refine the internal structure of the collection pipe, so that the two ends of the collection pipe are respectively used to collect dust from different connecting pipes, reduce the influence between different connecting pipes, and improve the dust collection efficiency.

[0013] In some embodiments, the material of the connecting pipe includes metal, and the material of the collecting pipe includes metal, so as to improve the structural strength of the connecting pipe and the collecting pipe, reduce deformation of the connecting pipe and the collecting pipe during use, and thus improve the efficiency of absorbing dust.

[0014] In some embodiments, the dust collection pipeline further includes a transmission pipe, which is connected to the collection pipe and is used to transmit the dust in the collection pipe to the outside of the dust collection pipeline. The dust collected by the collection pipe accumulates in the collection pipe, which may cause the collection pipe to be blocked, thereby affecting the efficiency of the dust collection pipeline. Therefore, the dust in the collection pipe can be further transmitted by setting a transmission pipe until the dust is discharged to the outside of the dust collection pipeline.

[0015] In some embodiments, the material of the transmission tube includes metal to improve the structural strength of the transmission tube, reduce deformation of the transmission tube during use, and thereby improve the efficiency of absorbing dust.

[0016] In some embodiments, the transmission pipe includes a plurality of branches, and the plurality of branches are respectively used to connect the plurality of collection pipes. Different collection pipes can be provided with different branches to transmit the dust in different collection pipes, thereby improving the efficiency of the dust collection pipeline in absorbing dust.

[0017] In some embodiments, the welding device further includes a switch assembly, which is used to control the opening and closing of at least part of the dust suction pipeline. By setting the switch assembly, different pipelines of the dust suction pipeline can be controlled to be in different states. For example, according to welding requirements, part of the dust suction pipeline can be controlled to be opened, while another part of the pipeline can be closed, so as to save power consumption and reduce costs.

[0018] In some embodiments, the assembly to be welded includes a busbar and a battery cell, the busbar is used to be electrically connected to the electrode terminal of the battery cell, and the welding area includes a welding area between the busbar and the electrode terminal. The busbar can be fixed to the electrode terminal of the battery cell by welding, and the busbar and the electrode terminal can be welded by welding equipment, thereby improving the welding efficiency between the busbar and the electrode terminal, thereby improving the processing efficiency of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a partial structure of a welding device according to an embodiment of the present application;

[0020] Figure 2 A partial cross-sectional schematic diagram of a welding device according to an embodiment of the present application;

[0021] Figure 3 Another partial cross-sectional schematic diagram of a welding device according to an embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of a welding nozzle according to an embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the partial structure of a dust collection pipeline and a pressure plate according to an embodiment of the present application;

[0024] Figure 6 A partial top view schematic diagram of a dust collection pipeline and a pressure plate according to an embodiment of the present application;

[0025] Figure 7 This is a schematic diagram of the partial structure of a dust collection pipeline according to an embodiment of the present application;

[0026] Figure 8 A top view of a battery according to an embodiment of the present application;

[0027] Fig. 9 A schematic diagram of a partial structure of a switch assembly according to an embodiment of the present application;

[0028] Fig.10 Another partial structural schematic diagram of a switch assembly according to an embodiment of the present application.

[0029] In the drawings, the drawings are not drawn to scale.

[0030] Marking instructions: 1-welding equipment; 11-welding nozzle; 111-welding channel; 112-dust suction interface; 113-mounting piece; 12-dust suction pipeline; 121-connecting pipe; 1211-first end of the connecting pipe; 1212--second end of the connecting pipe; 122-collecting pipe; 1221-blocking structure; 1222-cavity; 123-transmission pipe; 124-branch; 125-main interface; 126-first pipeline; 127-second pipeline; 13-pressing plate; 131-first through hole; 132-second through hole; 133-mounting structure; 134-fixing part; 14-switch assembly; 141-control part; 142-movable part; 1421-third through hole; 1422-blocking area; 20-assembly to be welded; 201-welding area; 21-battery cell; 211-electrode terminal; 22-collecting part. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0034] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0037] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0038] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0039] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0040] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0041] In some implementations, the battery cell in the embodiments of the present application may be a metal battery. Specifically, the metal battery may include a lithium metal secondary battery, a sodium metal battery, or a magnesium metal battery, etc., which is not limited in the embodiments of the present application.

[0042] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0043] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The present application has no specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0044] In some embodiments, the electrode assembly is provided with tabs, which can lead current out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0045] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film. The housing includes a shell and a cover plate.

[0046] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in this application.

[0047] The battery mentioned in the embodiments of the present application may include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in mixed connection through a busbar component.

[0048] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0049] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0050] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0051] The development of battery technology must consider many design factors at the same time, such as performance parameters such as energy density, cycle life, discharge capacity, charge and discharge rate, etc. In addition, the production and processing efficiency of the battery must also be considered. The battery includes multiple battery cells, and the multiple battery cells are electrically connected through a busbar. For example, the electrode terminals of the battery cells are welded to the busbar, and then the multiple battery cells are electrically connected through the busbar. In the process of welding the electrode terminals of the battery cells to the busbar, a large amount of dust is often generated, and a special dust removal device is required to remove the dust to reduce the impact on the welding process. One of the current treatment methods is to set up a dust suction pipeline near the welding area, suck the dust generated during the welding process into the dust suction pipeline and discharge it. Therefore, the design of the dust suction pipeline will affect the speed and effect of dust absorption, and then affect the efficiency of welding. How to timely absorb the dust generated during welding through the dust suction pipeline to improve the welding effect has become a problem that needs to be solved urgently.

[0052] Therefore, the embodiment of the present application provides a welding device that can solve the above problems. The welding device of the embodiment of the present application includes a welding nozzle and a dust suction pipeline. The welding nozzle includes a welding channel and a dust suction interface that are interconnected. The welding channel corresponds to the welding area of ​​the assembly to be welded, so that the welding area is welded in the welding channel; the dust suction pipeline is connected to the dust suction interface, and the dust generated during the welding process is transmitted to the dust suction pipeline through the dust suction interface so as to be discharged through the dust suction pipeline. The material of the dust suction pipeline of the embodiment of the present application includes metal, which can enhance the structural strength of the dust suction pipeline. For example, dust can be absorbed by reducing the air pressure inside the dust suction pipeline. The dust suction pipeline made of metal is not easy to deform, such as the dust suction pipeline is not easy to be damaged or bent, which can increase the service life of the dust suction pipeline; the dust suction pipeline is also not easy to produce convex or step-shaped deformation, and the inner wall of the dust suction pipeline can be relatively smooth, reducing wind resistance, improving the efficiency of dust absorption, and thus reducing the impact of dust on the welding process and welding effect.

[0053] It should be understood that the welding equipment of the embodiment of the present application can be used in the process of welding the welding area of ​​the assembly to be welded, wherein the assembly to be welded may include any device that needs to be welded. For example, the assembly to be welded may include a battery cell and a busbar component included in the battery, and the welding area of ​​the assembly to be welded may include the position where welding is required between the electrode terminal of the battery cell and the busbar component. For another example, the assembly to be welded may also include a battery cell and an insulating component, and the welding area of ​​the assembly to be welded may include the position where welding is required between the battery cell and the insulating component, but the embodiment of the present application is not limited to this.

[0054] Figure 1 A partial structural schematic diagram of a welding device 1 according to an embodiment of the present application is shown; Figure 2The schematic cross-sectional view shows a partial structure of a welding device 1 according to an embodiment of the present application. Figure 2 The welding device 1 shown can be Figure 1 The welding device 1 shown; Figure 3 A partial cross-sectional schematic diagram of a welding device 1 according to an embodiment of the present application is shown, for example, Figure 3 for Figure 2 An enlarged view of region A is shown, where Figure 3 Not shown Figure 2 The assembly 20 to be welded is shown; Figure 4 A schematic structural diagram of a welding nozzle 11 included in a welding device 1 according to an embodiment of the present application is shown.

[0055] like Figures 1 to 4 As shown, the welding device 1 of the embodiment of the present application includes a welding nozzle 11 and a dust suction pipeline 12. The welding nozzle 11 includes a welding channel 111 and a dust suction interface 112, the dust suction interface 112 is connected to the welding channel 111 through the side wall of the welding channel 111, the welding channel 111 corresponds to the welding area 201 of the assembly 20 to be welded, so as to weld the welding area 201 in the welding channel 111; the dust suction pipeline 12 is connected to the dust suction interface 112, and the dust suction pipeline 12 is used to absorb dust generated during welding through the dust suction interface 112, and the material of the dust suction pipeline 12 includes metal.

[0056] It should be understood that the welding channel 111 of the welding nozzle 11 of the embodiment of the present application can expose the welding area 201 of the component 20 to be welded, so as to facilitate welding of the welding area 201 in the welding channel 111. For example, the welding area 201 can be welded in the welding channel 111 using a welding device. The welding device can be selected according to the actual application. For example, the welding device can be a laser welding device, but the embodiment of the present application is not limited to this.

[0057] In the embodiment of the present application, welding the welding area 201 in the welding channel 111 may refer to that the welding device is at least partially located in the welding channel 111 to weld the welding area 201 in the welding channel 111; or it may refer to that the welding device is located outside the welding channel 111 to weld the welding area 201 through the welding channel 111. For example, if the welding device is a laser welding device, the welding device may emit laser outside the welding channel 111, and the laser passes through the welding channel 111 to weld the welding area 201.

[0058] In some embodiments, the welding channel 111 of the embodiment of the present application may be a tubular structure, and the shape and size of the cross section of the welding channel 111 may be set according to the actual application. Figure 4As shown, the cross-sectional shape of the welding channel 111 can be rectangular, or different from Figure 4 As shown, the cross-section of the welding channel 111 may also be circular, etc., for ease of processing. For another example, the size of the cross-section of the welding channel 111 in the embodiment of the present application is related to the area of ​​the welding area 201. Generally, the size of the cross-section of the welding channel 111 may be set to be greater than or equal to the area of ​​the welding area 201, so as to facilitate welding of the welding area 201.

[0059] In some embodiments, one end of the dust suction interface 112 of the welding nozzle 11 is connected to the welding channel 111. For example, one end of the dust suction interface 112 can be connected to the side wall of the welding channel 111; the other end of the dust suction interface 112 is connected to the dust suction pipeline 12 so that the dust generated during the welding process can be sucked out in time through the dust suction pipeline 12.

[0060] In some embodiments, the dust suction interface 112 may be a tubular structure, and the shape and size of the cross section of the dust suction interface 112 may be set according to actual applications. Figure 4 As shown, the cross-sectional shape of the welding channel 111 can be circular, or different from Figure 4 As shown, the cross-section of the welding channel 111 may also be in the shape of a rectangle, etc., to facilitate processing.

[0061] In some embodiments, the material of the welding nozzle 11 can be flexibly set according to the actual application. For example, the welding nozzle 11 can be a copper nozzle to improve the structural strength of the welding nozzle 11.

[0062] It should be understood that the dust in the embodiment of the present application may include any impurities generated during the welding process of the welding area 201. For example, the dust may include impurity particles of any size.

[0063] It should be understood that the material of the dust suction pipeline 12 of the embodiment of the present application includes metal, that is, at least a part of the dust suction pipeline 12 is made of metal. For example, the entire area of ​​the dust suction pipeline 12 can be made of metal. For another example, part of the dust suction pipeline 12 is made of metal, and another part of the dust suction pipeline 12 is made of other materials, such as a rubber hose.

[0064] The dust suction line 12 of the welding device 1 of the embodiment of the present application is connected to the dust suction interface 112 of the welding nozzle 11, so that the dust suction line 12 can timely absorb the dust generated when welding the welding area 201. In addition, the material of the dust suction line 12 includes metal, which can enhance the structural strength of the dust suction line 12. For example, if the dust is absorbed by reducing the air pressure inside the dust suction line 12, the metal dust suction line 12 is not easy to deform, such as the dust suction line 12 is not easy to be damaged or bent, which can increase the service life of the dust suction line 12; in addition, the dust suction line 12 is not easy to produce convex or step-shaped deformation inside. During use, the inner wall of the dust suction line 12 is relatively smooth, and the inner diameter changes little, which can reduce wind resistance, improve the efficiency of dust absorption, and thus reduce the impact of dust on the welding process and welding effect. For example, if the dust is not absorbed in time, the conductive particles in the dust will splash, which may cause a short circuit, thereby affecting the performance of the assembly 20 to be welded. For another example, if the dust is not absorbed in time, too much dust will remain in the welding area 201 , which will affect the performance of the welding area 201 .

[0065] In some embodiments, the size of the dust suction pipeline 12 can be flexibly set according to actual applications. For example, the minimum flow requirement of the dust suction pipeline 12 can be determined according to the efficiency requirement of dust absorption, and the flow rate can be increased by about 10% on this basis to set the size of the dust suction pipeline 12. Since the dust suction pipeline 12 made of metal is not easy to deform, the size of the dust suction pipeline 12 can be reduced.

[0066] It should be understood that the material of the dust suction pipeline 12 of the embodiment of the present application includes metal, and the metal material can be flexibly selected according to the actual application. For example, the metal material may include steel, copper or a metal composite material. For another example, the metal material may be stainless steel, so that the dust suction pipeline 12 is corrosion-resistant and the service life of the dust suction pipeline 12 is improved. For another example, the stainless steel material can select at least one of the following models: SUS304, SUS316, SUS321 and 904L. For another example, the material of the dust suction pipeline 12 can select SUS304 to reduce the cost of the dust suction pipeline 12, and the embodiment of the present application is not limited to this.

[0067] In the embodiment of the present application, the welding device 1 further includes: a pressing plate 13, the pressing plate 13 is located on a side of the welding nozzle 11 away from the welding area 201, the pressing plate 13 is provided with a first through hole 131, the first through hole 131 is connected to the welding channel 111, and the pressing plate 13 is used to fix the welding nozzle 11. Specifically, as Figures 1 to 4As shown, the welding nozzle 11 is installed on one side of the pressing plate 13 close to the welding area 201, and the pressing plate 13 can drive the welding nozzle 11 to move. For example, the pressing plate 13 can be controlled to move close to or away from the component to be welded 20, so that the welding nozzle 11 can move close to or away from the welding area 201. For example, after the pressing plate 13 drives the welding nozzle 11 close to the welding area 201, the pressing plate 13 can also be used to press the welding nozzle 11 against the component to be welded 20 to reduce the relative movement between the welding nozzle 11 and the component to be welded 20, thereby reducing the misalignment between the welding channel 111 and the welding area 201, and improving the accuracy of the welding position.

[0068] Furthermore, the pressing plate 13 is provided with a first through hole 131, and the first through hole 131 can be connected to the welding channel 111, so that the first through hole 131 can expose the welding area 201, that is, the pressing plate 13 will not block the welding area 201, so that the welding device can weld the welding area 201 through the first through hole 131 and the welding channel 111.

[0069] It should be understood that the material of the pressing plate 13 in the embodiment of the present application can be set according to the actual application. For example, the pressing plate 13 can be a glass fiber board; for another example, the pressing plate 13 can also be a bakelite board, but the embodiment of the present application is not limited thereto.

[0070] Figure 5 The schematic diagram of the partial structure of the pressing plate 13 and the dust suction pipeline 12 of the embodiment of the present application is shown. Figure 5 The pressing plate 13 and the dust collecting pipeline 12 shown can be Figure 1 and Figure 2 The welding device 1 shown includes a partial structure of a pressing plate 13 and a dust suction pipeline 12; Figure 6 The schematic top view of the partial structure of the pressing plate 13 and the dust suction pipeline 12 of the embodiment of the present application is shown. Figure 6 Can be Figure 5 The schematic top view of the pressing plate 13 and the dust suction pipeline 12 is shown.

[0071] In the embodiment of the present application, the pressing plate 13 may also be provided with a mounting structure 133, and the mounting structure 133 is used to mount the welding nozzle 11. Specifically, Figures 1 to 6 As shown, the welding nozzle 11 may be provided with a mounting member 113, and the mounting member 113 is connected to the mounting structure 133 of the pressing plate 13, so that the welding nozzle 11 is installed on the pressing plate 13. For example, the welding nozzle 11 and the pressing plate 13 may be detachably connected to facilitate replacement and maintenance. For another example, the mounting member 113 may include a bolt or a rivet, and the mounting structure 133 may include a through hole penetrating the pressing plate 13, so that the mounting member 113 and the mounting structure 133 are detachably connected to each other.

[0072] In some embodiments, the pressing plate 13 and the welding nozzle 11 can move relative to each other to adjust the position of the welding nozzle 11 and the welding area 201. For example, the pressing plate 13 can be installed with multiple welding nozzles 11. When the pressing plate 13 is close to the assembly 20 to be welded, the multiple welding nozzles 11 can correspond to different welding areas 201 of the assembly 20 to be welded. Considering that the positions of different welding areas 201 may be different, it can be set that the pressing plate 13 and the welding nozzle 11 can move relative to each other, for example, the welding nozzle 11 can move between the pressing plate 13 and the welding area 201. In this way, when the pressing plate 13 moves to a preset position, the welding nozzle 11 can still move between the pressing plate 13 and the welding area 201 to further adjust the distance between the welding nozzle 11 and the welding area 201, for example, the welding nozzle 11 can be made closer to or farther away from the welding area 201 to meet the welding requirements.

[0073] In some embodiments, the pressing plate 13 is provided with a second through hole 132, and the dust suction pipeline 12 is connected to the dust suction interface 112 through the second through hole 132. The pressing plate 13 is located on the side of the welding nozzle 11 away from the welding area 201, and the dust suction pipeline 12 is connected to the dust suction interface 112 of the welding nozzle 11 through the second through hole 132 of the pressing plate 13, then at least part of the dust suction pipeline 12 is located on the side of the pressing plate 13 away from the welding area 201, so that the space occupied by the dust suction pipeline 12 on the side of the pressing plate 13 close to the welding area 201 can be reduced. For example, even if the structure of the dust suction pipeline 12 is relatively complex and occupies a large space, by setting most of the dust suction pipeline 12 on the side of the pressing plate 13 away from the welding area 201, the influence of the dust suction pipeline 12 on the position of the assembly 20 to be welded and the welding nozzle 11 can be reduced, which is conducive to improving space utilization.

[0074] In some embodiments, the dust suction pipeline 12 of the embodiment of the present application may include a connecting pipe 121 and a collecting pipe 122. The first end 1211 of the connecting pipe 121 is connected to the dust suction interface 112, the second end 1212 of the connecting pipe 121 is connected to the second through hole 132, and the collecting pipe 122 is connected to the second through hole 132; the collecting pipe 122 is used to collect dust that passes through the dust suction interface 112, the connecting pipe 121, and the second through hole 132 in sequence. The dust generated during the welding process enters the connecting pipe 121 through the dust suction interface 112, and enters the collecting pipe 122 through the connecting pipe 121 and the second through hole 132. Considering that the dust suction pipeline 12 passes through the second through hole 132 of the pressing plate 13, at least part of the second through hole 132 is used to transmit dust to the collecting pipe 122, so that part of the structure of the dust suction pipeline 12 can be saved, and the complexity of the structure of the welding equipment 1 can be reduced.

[0075] Further, the second end 1212 is located in the second through hole 132, and at least a portion of the connecting tube 121 moves in the second through hole 132 along the axial direction Z of the second through hole 132, so that the welding nozzle 11 is close to and / or away from the welding area 201. Figures 1 to 6 As shown, when the pressing plate 13 is in a preset position, if it is necessary to adjust the distance between the welding nozzle 11 and the welding area 201 so that the welding nozzle 11 moves between the pressing plate 13 and the welding area 201, at least a part of the area of ​​the connecting pipe 121 is located in the second through hole 132, and the connecting pipe 121 can move along the axial direction Z of the second through hole 132, so that the connecting pipe 121 and the second through hole 132 can be kept connected to each other, so that dust can enter the collecting pipe 122 through the connecting pipe 121 and the second through hole 132, and the dust generated during the welding process can be collected in time. Moreover, even if the connecting pipe 121 is made of metal instead of a flexible hose that can be retracted and deformed, the connecting pipe 121 and the second through hole 132 can also be kept connected to each other when the distance between the welding nozzle 11 and the welding area 201 is adjusted.

[0076] It should be understood that the axial direction Z of the second through hole 132 of the embodiment of the present application is the thickness direction Z of the pressing plate 13; in other words, the axial direction Z of the second through hole 132 is the arrangement direction of the welding nozzle 11 and the corresponding welding area 201. Therefore, when the connecting tube 121 moves along the axial direction Z of the second through hole 132, the corresponding welding nozzle 11 can approach and / or move away from the welding area 201.

[0077] In some embodiments, the welding device 1 includes a plurality of welding nozzles 11 arranged along a first direction X, the dust collection pipeline 12 includes a plurality of connecting pipes 121 respectively connected to a plurality of dust collection interfaces 112 of the plurality of welding nozzles 11, and the collecting pipe 122 corresponds to the plurality of connecting pipes 121, and the collecting pipe 122 is used to collect dust passing through the plurality of connecting pipes 121. Figures 1 to 6 As shown, the welding device 1 includes a plurality of welding nozzles 11 arranged along a first direction X, and the plurality of welding nozzles 11 may correspond to a plurality of welding areas 201, so that it is convenient to weld the plurality of welding areas 201 included in the assembly to be welded 20. The plurality of welding nozzles 11 correspond to a plurality of connecting pipes 121, for example, the plurality of welding nozzles 11 correspond to the plurality of connecting pipes 121 one by one, so that the dust generated in the welding channel 111 of each welding nozzle 11 can be absorbed in time, and the related influence between different welding nozzles 11 is reduced; and the same collecting pipe 122 is arranged to be connected with the plurality of connecting pipes 121, so that each collecting pipe 122 can collect the dust passing through the plurality of connecting pipes 121, improve the integration degree of the dust collecting pipeline 12, reduce the pipeline of the dust collecting pipeline 12, and then simplify the structure of the dust collecting pipeline 12 for easy processing and installation.

[0078] The first direction X in the embodiment of the present application is any direction, for example, Figures 1 to 6 The first direction X is mainly taken as the length direction X of the pressing plate 13 as an example. Figures 1 to 6 As shown, the length direction X, width direction Y and thickness direction Z of the pressing plate 13 of the embodiment of the present application are perpendicular to each other, and the dimension of the length direction X of the pressing plate 13 is greater than the dimension of the width direction Y.

[0079] It should be understood that the pressure plate 13 of the embodiment of the present application may also include a fixing portion 134, which is used to fix at least part of the structure of the dust suction pipeline 12. For example, the fixing portion 134 can be used to fix the collecting pipe 122 to improve the structural stability of the dust suction pipeline 12, thereby improving the efficiency of the dust suction pipeline 12.

[0080] In some embodiments, a blocking structure 1221 is provided in the collection pipe 122, and the blocking structure 1221 is used to separate the collection pipe 122 into two chambers 1222, and the two chambers 1222 are used to collect dust passing through different connecting pipes 121. Specifically, the blocking structure 1221 in the collection pipe 122 separates the collection pipe 122 into two chambers 1222, and each chamber 1222 can correspond to a plurality of second through holes 132, so that each chamber 1222 can collect dust passing through the connecting pipe 121 corresponding to the plurality of second through holes 132, and the connecting pipes 121 corresponding to the two chambers 1222 are different. Figures 1 to 6 As shown, taking any one of the collecting tubes 122 as an example, the blocking structure 1221 in the middle of the collecting tube 122 can separate the collecting tube 122 into two left and right chambers 1222, and each chamber 1222 corresponds to a plurality of second through holes 132. The blocking structure 1221 can refine the internal structure of the collecting tube 122, so that the two ends of the collecting tube 122 are respectively used to collect dust from different connecting tubes 121, thereby reducing the influence between different connecting tubes 121 and improving the dust collection efficiency.

[0081] It should be understood that the material of the connecting pipe 121 of the embodiment of the present application can be the same as or different from the material of the collecting pipe 122. For example, a material box of the connecting pipe 121 and the collecting pipe 122 can be provided to facilitate processing.

[0082] In some embodiments, the material of the connecting pipe 121 includes metal, and the material of the collecting pipe 122 includes metal, so as to improve the structural strength of the connecting pipe 121 and the collecting pipe 122, reduce the deformation of the connecting pipe 121 and the collecting pipe 122 during use, and thereby improve the efficiency of absorbing dust.

[0083] In the embodiment of the present application, the dust collection pipeline 12 further includes a transmission pipe 123, which is connected to the collection pipe 122, and is used to transmit the dust in the collection pipe 122 to the outside of the dust collection pipeline 12. The dust collected by the collection pipe 122 accumulates in the collection pipe 122, which may cause the collection pipe 122 to be blocked, thereby affecting the efficiency of the dust collection pipeline 12. Therefore, the dust in the collection pipe 122 can be further transmitted by setting the transmission pipe 123 until the dust is discharged to the outside of the dust collection pipeline 12.

[0084] In some embodiments, the dust collection pipeline 12 may include a main interface 125, for example, the main interface 125 may be connected to the transmission pipe 123, or the main interface 125 may be one end of the transmission pipe 123. The main interface 125 may be used to discharge the dust in the transmission pipe 123 out of the dust collection pipeline 12. For example, the main interface 125 may be connected to a processing device, and the processing device may be used to reduce the air pressure inside the dust collection pipeline 12, so that the dust collection pipeline 12 can absorb the dust in the welding process into the inside of the dust collection pipeline 12, and discharge it to the outside of the dust collection pipeline 12 through the main interface 125, and then the processing device receives and processes the dust.

[0085] In some embodiments, the material of the transmission pipe 123 includes metal to improve the structural strength of the transmission pipe 123, reduce the deformation of the transmission pipe 123 during use, and thus improve the efficiency of dust absorption. Further, all the pipes of the dust collection pipeline 12 can be set to be made of metal, or at least 80% of the pipes of the dust collection pipeline 12 can be set to be made of metal, so as to improve the structural strength of the dust collection pipeline 12 as much as possible.

[0086] Figure 7 The schematic diagram of the local structure of the transmission tube 123 of the embodiment of the present application is shown. Figure 7 The transmission tube 123 shown can be Figure 1 The transmission pipe 123 of the dust suction pipeline 12 of the welding device 1 shown, wherein Figure 1 The transmission tube 123 shown can be Figure 7 The partial structure of the transmission pipe 123 is shown.

[0087] In some embodiments, the transmission pipe 123 includes a plurality of branches 124, and the plurality of branches 124 are respectively used to connect a plurality of collection pipes 122. Considering that the welding device 1 is usually provided with a plurality of welding nozzles 11 for welding different welding areas 201; correspondingly, a plurality of collection pipes 122 can be provided to collect dust corresponding to different welding nozzles 11. Since each collection pipe 122 can be used to collect dust generated inside a plurality of welding nozzles 11, different collection pipes 122 can be provided with different branches 124 to respectively transmit dust in different collection pipes 122, thereby improving the efficiency of the dust suction pipeline 12 in absorbing dust.

[0088] Furthermore, if a blocking structure 1221 is provided inside the collecting tube 122, the two ends of the same collecting tube 122 correspond to different cavities 1222 respectively, and the two ends of the collecting tube 122 can be connected to different branches 124 respectively, so that each branch is used to transmit the dust generated in a cavity 1222 of the collecting tube 122, thereby improving the dust transmission efficiency.

[0089] In some embodiments, Figure 7 As shown, the transmission pipe 123 of the dust collection pipeline 12 may include a plurality of branches 124, for example, Figure 7 Take 8 branches as an example. Figure 1 As shown, each branch 124 corresponds to a cavity 1222 of a collection pipe 122, that is, each branch 124 is used to collect dust generated in a cavity 1222. Further, the multiple branches 124 can be connected to the same main interface 125 to facilitate unified collection and processing of the absorbed dust. For example, the four branches on the same side of the eight branches 124 can be integrated into the same pipeline, and the pipelines integrated on both sides are integrated and connected to the same main interface 125 to improve the structural integration of the dust collection pipeline 12 and facilitate control.

[0090] In the embodiment of the present application, the welding device 1 further includes a switch assembly 14, which is used to control the opening and closing of at least part of the dust suction pipeline 12. Considering that the welding device 1 can be provided with multiple welding nozzles 11 to correspond to multiple welding areas 201, but the multiple welding areas 201 may not be welded at the same time, the multiple welding nozzles 11 may not need dust suction at the same time. By setting the switch assembly 14, different pipelines of the dust suction pipeline 12 can be controlled to be in different states. For example, according to the welding requirements, part of the pipelines in the dust suction pipeline 12 can be controlled to be opened, while another part of the pipelines can be closed, so as to save power consumption and reduce costs.

[0091] It should be understood that the switch assembly 14 of the embodiment of the present application can be located at any position of the dust collection pipeline 12. Figure 8The schematic diagram of the structure of the switch assembly 14 of the embodiment of the present application is shown. Specifically, the welding device 1 may include one or more switch assemblies 14, each switch assembly 14 may be used to control the state of the dust collection pipeline 12 at any position, and different switch assemblies 14 may be located at different positions of the dust collection pipeline 12. For example, Figure 8 For example, the welding device 1 includes a plurality of switch components 14 , and the plurality of switch components 14 are arranged along the first direction X, but the embodiment of the present application is not limited thereto.

[0092] In some embodiments, the switch assembly 14 of the welding device 1 can be used to control the connecting pipe 121. For example, the connecting pipe 121 corresponds to the dust suction interface 112 of the welding nozzle 11 one by one, and each connecting pipe 121 can be provided with a switch assembly 14 to control the switch state of each connecting pipe 121. When the welding area 201 corresponding to the welding nozzle 11 is welded, the connecting pipe 121 connected to the dust suction interface 112 of the welding nozzle 11 is opened, and when the welding area 201 corresponding to the welding nozzle 11 is not welded, or when welding is completed, the connecting pipe 121 connected to the dust suction interface 112 of the welding nozzle 11 is closed.

[0093] In some embodiments, the switch assembly 14 can also be used to control the collecting pipe 122 and / or the transmission pipe 123. For example, the switch assembly 14 can be located at any position of the collecting pipe 122, or at any position of any branch 124 of the transmission pipe 123, so that the pipeline connected to the collecting pipe 122 and / or the transmission pipe 123 is opened or closed. The embodiments of the present application are not limited to this.

[0094] For example, the switch component 14 can be used to control any branch 124 of the transmission pipe 123. When the switch component 14 controls the branch 124 to be closed, the collecting pipe 122 and one or more connecting pipes 121 corresponding to the branch 124 may also be in a closed state, that is, they cannot absorb the dust in the corresponding one or more welding nozzles 11; on the contrary, when the switch component 14 controls the branch 124 to be opened, and the collecting pipe 122 and one or more connecting pipes 121 corresponding to the branch 124 are not provided with other switch components 14, or the set switch components 14 are also turned on, then the collecting pipe 122 and one or more connecting pipes 121 corresponding to the branch 124 may also be in an open state, that is, they can absorb the dust in the corresponding one or more welding nozzles 11.

[0095] In some embodiments, different switch assemblies 14 may be located at different positions of the dust collection pipeline 12. For example, different switch assemblies 14 may be used to control the connecting pipe 121, the collecting pipe 122, and the transmission pipe 123 in the dust collection pipeline 12. Specifically, some switch assemblies 14 may be set to control the connecting pipe 121, and another part of the switch assemblies 14 may be set to control the collecting pipe 122; or, some switch assemblies 14 may be set to control the connecting pipe 121, and another part of the switch assemblies 14 may be set to control the transmission pipe 123. The embodiments of the present application are not limited thereto.

[0096] It should be understood that the switch assembly 14 of the embodiment of the present application can be implemented in a variety of ways. Figure 8 As shown, the welding device 1 may include one or more switch components 14, and the implementation methods of different switch components 14 may be the same or different. For example, Figure 8 For example, the multiple switch components 14 included in the welding device 1 are implemented in the same manner to facilitate control and processing.

[0097] Fig. 9 Another schematic diagram of the structure of the switch assembly 14 according to an embodiment of the present application is shown, for example, Fig. 9 The switch components 14 shown can be any two switch components 14 included in the welding device 1. Fig. 9 As shown, here, two switch components 14 are used to respectively control the first pipeline 126 and the second pipeline 127 in the dust collection pipeline 12 as an example, wherein the first pipeline 126 and the second pipeline 127 are any two pipelines in the dust collection pipeline 12, and the two switch components 14 respectively control the first pipeline 126 to be in a closed state and control the second pipeline 127 to be in an open state. For example, the first pipeline 126 and the second pipeline 127 can be different connecting pipes 121; or, the first pipeline 126 and the second pipeline 127 can also be connecting pipe 121 and collecting pipe 122; or, the first pipeline 126 and the second pipeline 127 can also be other pipelines.

[0098] like Fig. 9 As shown, the switch assembly 14 may include a control portion 141 and a movable portion 142, and the control portion 141 may be used to control the movement of the movable portion 142 so that the movable portion 142 can open and close the corresponding dust suction pipeline 12. Specifically, the movable portion 142 may be provided with a third through hole 1421 and a blocking area 1422, and the blocking area 1422 is the area of ​​the movable portion 142 other than the third through hole 1421. In some embodiments, the control portion 141 may be implemented in a variety of ways. For example, the control portion 141 may include a cylinder structure, and the movement of the movable portion 142 is controlled by the cylinder structure.

[0099] like Fig. 9As shown, taking the first pipeline 126 as an example, when the control unit 141 controls the blocking area 1422 of the movable part 142 to correspond to the first pipeline 126 of the dust suction pipeline 12, the blocking area 1422 will block the first pipeline 126 to close the first pipeline 126, that is, the first pipeline 126 cannot absorb dust. Taking the second pipeline 127 as an example, when the control unit 141 controls the third through hole 1421 of the movable part 142 to correspond to the second pipeline 127 of the dust suction pipeline 12, the third through hole 1421 can keep the second pipeline 127 internally connected to open the second pipeline 127, that is, the second pipeline 127 can absorb dust.

[0100] Therefore, the opening and closing of the corresponding pipeline can be controlled by the switch assembly 14, so that the opened part of the dust suction pipeline 12 can absorb dust, while the closed part cannot absorb dust, thereby saving power consumption.

[0101] It should be understood that the welding device 1 of the embodiment of the present application can be used to weld the welding area 201 of the assembly to be welded 20, wherein the assembly to be welded 20 may include any component that needs to be welded. Fig.10 A schematic structural diagram of multiple battery cells 21 according to an embodiment of the present application is shown.

[0102] In some embodiments, the assembly 20 to be welded includes a busbar 22 and a battery cell 21, the busbar 22 is used to be electrically connected to the electrode terminal 211 of the battery cell 21, and the welding area 201 includes a welding area between the busbar 22 and the electrode terminal 211. Specifically, the busbar 22 can realize electrical connection between multiple battery cells 21 by connecting the electrode terminal 211 of the battery cell 21. Further, the busbar 22 can be fixed to the electrode terminal 211 of the battery cell 21 by welding, and the busbar 22 and the electrode terminal 211 can be welded by the welding device 1, thereby improving the welding efficiency between the busbar 22 and the electrode terminal 211, and thus improving the processing efficiency of the battery cell 21.

[0103] The electrode terminal 211 of the embodiment of the present application is used to electrically connect to the electrode assembly inside the battery cell 21 to output the electrical energy of the battery cell 21. The battery cell 21 may include at least two electrode terminals 211, and the at least two electrode terminals 211 may include at least one positive electrode terminal and at least one negative electrode terminal, the positive electrode terminal is used to electrically connect to the positive electrode tab of the electrode assembly, and the negative electrode terminal is used to electrically connect to the negative electrode tab of the electrode assembly. The positive electrode terminal may be directly connected to the positive electrode tab or indirectly connected, and the negative electrode terminal may be directly connected to the negative electrode tab or indirectly connected. Exemplarily, the positive electrode terminal may be electrically connected to the positive electrode tab through a connecting member, and the negative electrode terminal may be electrically connected to the negative electrode tab through a connecting member.

[0104] It should be understood that the multiple electrode terminals 211 included in the battery cell 21 of the embodiment of the present application can be located on the same wall, or can also be located on different walls. Fig.10 It is mainly taken as an example that the battery cell 21 includes two electrode terminals 211 , and the two electrode terminals 211 are located on the same wall, but the embodiment of the present application is not limited thereto.

[0105] The battery cell 21 of the embodiment of the present application can be used for processing and assembly into a battery. Specifically, in order to meet different power usage requirements, the battery may include a plurality of battery cells 21, wherein the plurality of battery cells 21 can be connected in series, in parallel, or in mixed connection, and mixed connection refers to a mixture of series and parallel connection. The battery may also be referred to as a battery pack. Optionally, a plurality of battery cells 21 may first be connected in series, in parallel, or in mixed connection to form a battery module, and a plurality of battery modules may then be connected in series, in parallel, or in mixed connection to form a battery. In other words, a plurality of battery cells 21 may directly form a battery, or they may first form a battery module, and the battery module may then form a battery.

[0106] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using batteries.

[0107] Electrical equipment may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, and the like. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, and the like; spacecraft include airplanes, rockets, space shuttles, and spacecraft, and the like; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0108] In some embodiments, the assembly 20 to be welded includes a plurality of battery cells 21 arranged along a first direction X, and the plurality of battery cells 21 include two electrode terminals 211 arranged along a second direction Y, and the first direction X is perpendicular to the second direction Y. The welding area 201 of the embodiment of the present application may include a welding area between an electrode terminal 211 of a battery cell 21 and a corresponding current collecting component 22. Fig.10As shown, for a plurality of battery cells 21 arranged along the first direction X, each battery cell 21 may include a plurality of electrode terminals 211. For example, here, each battery cell 21 includes two electrode terminals 211 located on the same wall as an example; each welding area 201 may include a welding area between an electrode terminal 211 and a busbar 22. During welding, a plurality of electrode terminals 211 included in the same battery cell 21 may be welded to the corresponding busbar 22 at the same time, so as to improve the welding efficiency and speed up the welding efficiency between the plurality of battery cells 21 and the busbar 22.

[0109] For example, Fig.10 As shown, there is a welding area 201 between each electrode terminal 211 and the corresponding busbar component 22 , and the electrode terminals 211 included in every two battery cells 21 can be welded simultaneously to increase the welding speed, thereby improving the processing efficiency of the battery cells 21 .

[0110] Therefore, the dust suction pipeline 12 of the welding device 1 of the embodiment of the present application is connected to the dust suction interface 112 of the welding nozzle 11, so that the dust suction pipeline 12 can absorb the dust generated when welding the welding area 201 in time. In addition, the material of the dust suction pipeline 12 includes metal, which can enhance the structural strength of the dust suction pipeline 12. For example, if the dust is absorbed by reducing the air pressure inside the dust suction pipeline 12, the metal dust suction pipeline 12 is not easy to deform, such as the dust suction pipeline 12 is not easy to be damaged or bent, which can increase the service life of the dust suction pipeline 12; in addition, the dust suction pipeline 12 is not easy to produce convex or step-shaped deformation inside. During use, the inner wall of the dust suction pipeline 12 is relatively smooth, and the inner diameter changes little, which can reduce wind resistance, improve the efficiency of dust absorption, and thus reduce the impact of dust on the welding process and welding effect. For example, if the dust is not absorbed in time, the conductive particles in the dust will splash, which may cause a short circuit, thereby affecting the performance of the assembly 20 to be welded. For another example, if the dust is not absorbed in time, too much dust will remain in the welding area 201 , which will affect the performance of the welding area 201 .

[0111] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present 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 device, characterized in that: include: A welding nozzle (11), the welding nozzle (11) comprising a welding channel (111) and a dust suction interface (112), the dust suction interface (112) being in communication with the welding channel (111) through a side wall of the welding channel (111), the welding channel (111) corresponding to a welding area (201) of a component (20) to be welded, so as to weld the welding area (201) in the welding channel (111); A dust suction pipeline (12), the dust suction pipeline (12) is connected to the dust suction interface (112), the dust suction pipeline (12) is used to absorb dust generated during the welding process through the dust suction interface (112), and the material of the dust suction pipeline (12) includes metal.

2. The welding device according to claim 1, characterized in that The welding equipment also includes: A pressing plate (13), the pressing plate (13) being located on a side of the welding nozzle (11) away from the welding area (201), the pressing plate (13) being provided with a first through hole (131), the first through hole (131) being connected to the welding channel (111), and the pressing plate (13) being used for fixing the welding nozzle (11).

3. The welding device according to claim 2, characterized in that: The pressing plate (13) is provided with a second through hole (132), and the dust suction pipeline (12) passes through the second through hole (132) and is connected to the dust suction interface (112).

4. The welding device according to claim 3, characterized in that: The dust collection pipeline (12) comprises a connecting pipe (121) and a collecting pipe (122). The first end (1211) of the connecting pipe (121) is connected to the dust suction interface (112), the second end (1212) of the connecting pipe (121) is connected to the second through hole (132), and the collecting pipe (122) is in communication with the second through hole (132); The collecting pipe (122) is used to collect the dust that passes through the dust suction interface (112), the connecting pipe (121) and the second through hole (132) in sequence.

5. The welding device according to claim 4, characterized in that The second end (1212) is located in the second through hole (132), and at least a portion of the connecting tube (121) moves in the second through hole (132) along the axial direction of the second through hole (132) so that the welding nozzle (11) approaches and / or moves away from the welding area (201).

6. The welding device according to claim 4 or 5, characterized in that: The welding equipment comprises a plurality of welding nozzles (11) arranged along a first direction, the dust suction pipeline (12) comprises a plurality of connecting pipes (121) respectively connected to a plurality of dust suction interfaces (112) of the plurality of welding nozzles (11), the collecting pipe (122) corresponds to the plurality of connecting pipes (121), and the collecting pipe (122) is used to collect dust passing through the plurality of connecting pipes (121).

7. The welding device according to claim 6, characterized in that A blocking structure (1221) is provided in the collection pipe (122), and the blocking structure (1221) is used to separate the collection pipe (122) into two chambers (1222), and the two chambers (1222) are used to collect dust passing through different connecting pipes (121).

8. The welding device according to any one of claims 4 to 7, characterized in that The material of the connecting pipe (121) includes metal, and the material of the collecting pipe (122) includes metal.

9. The welding device according to any one of claims 4 to 8, characterized in that The dust collection pipeline (12) further comprises a transmission pipe (123), wherein the transmission pipe (123) is connected to the collection pipe (122), and the transmission pipe (123) is used to transmit the dust in the collection pipe (122) to the outside of the dust collection pipeline (12).

10. The welding device according to claim 9, characterized in that The material of the transmission tube (123) includes metal.

11. The welding device according to claim 9 or 10, characterized in that: The transmission pipe (123) includes a plurality of branches (124), and the plurality of branches (124) are respectively used to connect to the plurality of collection pipes (122).

12. The welding device according to any one of claims 1 to 11, characterized in that The welding equipment further comprises a switch assembly (14), wherein the switch assembly (14) is used to control the opening and closing of at least a portion of the dust suction pipeline (12).

13. The welding device according to any one of claims 1 to 12, characterized in that The assembly (20) to be welded comprises a busbar component (22) and a battery cell (21), the busbar component (22) being used to be electrically connected to an electrode terminal (211) of the battery cell (21), and the welding area (201) comprising a welding area between the busbar component (22) and the electrode terminal (211).

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