Welding apparatus and welding method

Abstract

A welding apparatus and a welding method. The welding apparatus comprises: a welding part, used for welding at a first welding position a first welding area of a component to be welded, said component comprising a plurality of welding areas; and a measurement part, used for measuring a second welding position corresponding to a second welding area of said component when the welding part welds the first welding area, the second welding area being adjacent to the first welding area. The welding part is further used for moving from the first welding position to the second welding position and welding at the second welding position the second welding area. The welding apparatus and the welding method can improve welding efficiency.

Description

Welding equipment and welding methods

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311196142.5, filed on September 15, 2023, entitled “Welding Equipment and Welding Method,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of battery production and manufacturing, and more specifically, to a welding device and a welding method. Background Art

[0004] 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, etc. In addition, the processing efficiency of the battery also needs to be considered. The battery includes a plurality of battery cells connected in series and / or parallel, and each battery cell has an electrode terminal with different polarity. In order to realize the series and parallel connection between multiple battery cells, it is necessary to electrically connect the electrode terminals to the busbar components by welding. How to improve welding efficiency to improve battery processing efficiency is a technical problem that needs to be solved urgently.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a welding device and a welding method, which can improve welding efficiency.

[0007] In a first aspect, a welding device is provided, comprising: a welding component for welding a first welding area of ​​a component to be welded at a first welding position, the component to be welded comprising a plurality of welding areas; a measuring component for measuring a second welding position corresponding to a second welding area of ​​the component to be welded, when the welding component welds the first welding area, the second welding area being adjacent to the first welding area; the welding component is further configured to move from the first welding position to the second welding position, and to weld the second welding area at the second welding position.

[0008] Therefore, in the welding equipment of the embodiment of the present application, when the welding component is located at the first welding position and welds the first welding area of ​​the assembly to be welded, the measuring component measures the second welding position corresponding to the second welding area, where the second welding area is a welding area adjacent to the first welding area among the multiple welding areas included in the assembly to be welded; the welding component moves from the first welding position to the second welding position and welds the second welding area at the second welding position; and so on, the welding equipment measures and welds the multiple welding areas in sequence. Because in this process, while the welding component is welding one of the welding areas, the measuring component will simultaneously measure the welding position of the adjacent welding area, compared to measuring and welding one welding area separately and then measuring and welding the next welding area, it can save time and shorten the duration of the entire welding process for multiple welding areas, thereby improving welding efficiency.

[0009] In some embodiments, the welding component and the measuring component move synchronously. Considering that the measuring component needs to measure welding positions corresponding to multiple welding areas at different positions, and the welding component needs to move to welding positions corresponding to multiple welding areas, if the welding component and the measuring component are configured to move synchronously, the measuring component can also move synchronously when the welding component moves from a first welding position to a second welding position, eliminating the need for separate control, simplifying the structure of the welding equipment and improving efficiency.

[0010] In some embodiments, the welding apparatus includes a motion assembly, wherein the welding component and the measuring component are integrated into the motion assembly, and the motion assembly is used to control the movement of the welding component and the measuring component. Integrating the welding component and the measuring component into the motion assembly facilitates controlling the movement of the welding component and the measuring component through the motion assembly. For example, the welding component and the measuring component can be controlled to move separately or synchronously through the motion assembly. Furthermore, integrating the welding component and the measuring component into the motion assembly can simplify the structure of the welding apparatus and reduce the time required for the welding component and the measuring component to avoid each other during movement, thereby facilitating control and reducing processing time.

[0011] In some embodiments, the component to be welded includes multiple welding areas arranged along a first direction, and the motion component is used to control the movement of the welding component and the measuring component along the first direction so as to weld each welding area in turn without excessive reciprocating motion or movement in other directions, so that the moving distance of the welding component and the moving distance of the measuring component are both shorter, thereby reducing the total welding time of the component to be welded and improving welding efficiency.

[0012] In some embodiments, the motion assembly is used to control the welding component and the measuring component to move closer to and / or further away from the component to be welded. The motion assembly can control the movement of the welding component and the measuring component in various directions, which is simple to operate and can improve welding efficiency.

[0013] In some embodiments, each of the multiple welding areas includes multiple sub-welding areas; the welding component is used to: at the first welding position, simultaneously weld the multiple sub-welding areas included in the first welding area, which can reduce the total welding time of the assembly to be welded, thereby improving the welding efficiency of the assembly to be welded.

[0014] In some embodiments, the welding equipment also includes: a pressure plate assembly, which is located on the side of the component to be welded facing the welding part and the measuring part. The pressure plate assembly is used to position the positions of multiple welding areas of the component to be welded, so that the multiple welding areas of the component to be welded are not easily moved or dislocated during the welding process, thereby improving the measurement accuracy of the measuring part and the welding accuracy of the welding part, thereby improving the welding efficiency.

[0015] In some embodiments, the welding component and the measuring component are located on a side of the platen assembly away from the assembly to be welded, so that the movement of the welding component, the measuring component and the platen assembly during welding is simple and easy to control.

[0016] In some embodiments, the pressure plate assembly includes: a pressure plate, which is provided with multiple through holes, and the pressure plate is used to position the multiple through holes and the multiple welding areas so that the welding component can weld the multiple welding areas through the multiple through holes; a control component, which is used to control the pressure plate to approach and / or move away from the component to be welded. The structure is simple and easy to implement.

[0017] In some embodiments, the pressure plate assembly further includes: a dust suction component, which is used to collect dust generated by welding the multiple welding areas to reduce the impact of dust and other impurities generated during the welding process on the welding process, thereby improving welding efficiency and welding strength.

[0018] In some embodiments, the assembly to be welded includes a busbar component and multiple battery cells, the busbar component is used to electrically connect to the electrode terminals of the multiple battery cells, and the multiple welding areas include welding areas between the busbar component and the electrode terminals. The busbar component and the multiple electrode terminals can be welded by welding equipment to improve the welding efficiency between the busbar component and the electrode terminals, thereby improving the processing efficiency of the battery cells.

[0019] In some embodiments, the assembly to be welded includes a plurality of battery cells arranged along a first direction, the plurality of battery cells including two electrode terminals arranged along a second direction, the first direction being perpendicular to the second direction, and each of the plurality of welding regions including a welding region between an electrode terminal of at least one battery cell and the busbar component. Each welding region may include a welding region between an electrode terminal of one or more battery cells and the busbar component. That is, if the electrode terminal of the same battery cell corresponds to the same welding region, then the plurality of electrode terminals of the same battery cell and the corresponding busbar component may be welded simultaneously by the welding component, thereby improving welding efficiency and accelerating the welding efficiency between the plurality of battery cells and the busbar component.

[0020] In some embodiments, the welding component includes a galvanometer laser welding machine, which has a fast welding speed and high welding precision, and can greatly save time and cost.

[0021] In a second aspect, a welding method is provided, which includes: welding a first welding area of ​​a component to be welded by a welding component at a first welding position, wherein the component to be welded includes multiple welding areas; when the welding component welds the first welding area, measuring a second welding position corresponding to a second welding area of ​​the component to be welded by a measuring component, wherein the second welding area is adjacent to the first welding area; moving the welding component from the first welding position to the second welding position, and welding the second welding area at the second welding position.

[0022] Therefore, in the welding method of the embodiment of the present application, when the welding component is located at the first welding position to weld the first welding area of ​​the assembly to be welded, the measuring component measures the second welding position corresponding to the second welding area, where the second welding area is a welding area adjacent to the first welding area among the multiple welding areas included in the assembly to be welded; the welding component moves from the first welding position to the second welding position and welds the second welding area at the second welding position; and so on, the welding equipment measures and welds the multiple welding areas in sequence. Because in this process, while the welding component is welding one of the welding areas, the measuring component will simultaneously measure the welding position of the adjacent welding area. Compared with measuring and welding one welding area separately and then measuring and welding the next welding area, this can save time and shorten the duration of the entire welding process for multiple welding areas, thereby improving welding efficiency.

[0023] In some embodiments, the welding component moves synchronously with the measuring component.

[0024] In some embodiments, the method further includes: controlling the welding component and the measuring component to approach and / or move away from the component to be welded.

[0025] In some embodiments, each of the multiple welding areas includes multiple sub-welding areas; and the first welding area is welded by a welding component at the first welding position, including: at the first welding position, the multiple sub-welding areas included in the first welding area are welded simultaneously by a welding component.

[0026] In some embodiments, the method further comprises: positioning the positions of the plurality of welding regions of the component to be welded by using a pressing plate assembly, wherein the pressing plate assembly is located on a side of the component to be welded facing the welding component and the measuring component.

[0027] In some embodiments, the assembly to be welded includes a busbar and a plurality of battery cells, the busbar is configured to be electrically connected to electrode terminals of the plurality of battery cells, and the plurality of welding regions include welding regions between the busbar and the electrode terminals.

[0028] In some embodiments, the assembly to be welded includes a plurality of battery cells arranged along a first direction, the plurality of battery cells include two electrode terminals arranged along a second direction, the first direction is perpendicular to the second direction, and each of the plurality of welding areas includes a welding area between the electrode terminal of at least one battery cell and the busbar component. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic block diagram of a welding device according to an embodiment of the present application;

[0030] FIG2 is a schematic diagram of multiple welding areas according to an embodiment of the present application;

[0031] FIG3 is a schematic diagram of a partial structure of a welding device according to an embodiment of the present application;

[0032] FIG4 is a schematic structural diagram of a welding component and a measuring component according to an embodiment of the present application;

[0033] FIG5 is a schematic structural diagram of an end portion of a welding component according to an embodiment of the present application;

[0034] FIG6 is another partial structural diagram of a welding device according to an embodiment of the present application;

[0035] FIG7 is a schematic diagram of a partial structure of a pressure plate assembly according to an embodiment of the present application;

[0036] FIG8 is a schematic structural diagram of a pressing plate according to an embodiment of the present application;

[0037] FIG9 is a schematic structural diagram of multiple battery cells according to an embodiment of the present application;

[0038] FIG10 is a schematic flow chart of a welding method according to an embodiment of the present application.

[0039] In the drawings, the drawings are not drawn to scale.

[0040] Marking instructions: 1-welding equipment; 11-welding component; 111-air knife; 112-welding structure; 1121-welding position; 12-measuring component; 110-welding area; 120-sub-welding area; 13-laser connection component; 10-moving component; 30-pressing plate component; 31-pressing plate; 311-through hole; 312-mounting structure; 313-blocking structure; 32-control component; 33-dust suction component; 40-bracket; 2-component to be welded; 21-battery cell; 211-electrode terminal; 22-collection component. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0042] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" 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-secondary relationship.

[0044] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0046] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0047] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0048] The term "multiple" in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0049] 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.

[0050] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0051] In some implementations, the battery cell in the embodiment 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 embodiment of the present application.

[0052] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of a battery cell, active ions (such as lithium ions) are inserted and removed between the positive and negative electrodes. The separator, placed between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0053] In some embodiments, the battery cell also includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This application does not specifically limit the type of electrolyte, and the electrolyte can be selected based on needs. The electrolyte can be liquid, gel, or solid.

[0054] In some embodiments, the electrode assembly is provided with tabs that can conduct current from the electrode assembly. The tabs include a positive tab and a negative tab.

[0055] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., a copper-aluminum composite housing), or an aluminum-plastic film. The housing includes a shell and a cover.

[0056] 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, and a polygonal battery. The polygonal battery is, for example, a hexagonal battery, etc. There is no special limitation in this application.

[0057] 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 hybrid through a busbar.

[0058] 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.

[0059] 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 housed in the case.

[0060] 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.

[0061] The development of battery technology requires simultaneous consideration of multiple design factors, including performance parameters such as energy density, cycle life, discharge capacity, and charge / discharge rate. Furthermore, battery production and processing efficiency must also be considered. A battery comprises multiple battery cells, which are electrically connected via a busbar. For example, the electrode terminals of a battery cell are welded to the busbar, thereby electrically connecting the multiple battery cells via the busbar. During the welding process, for example, a copper nozzle pressure plate is first moved to the welding area to position the busbar and electrode terminals in that area. The optimal welding position is then measured using a distance meter. After the distance meter is removed, the welding equipment is moved to the optimal position to weld the electrode terminals and busbar in that area. After welding any weld area, the above process is repeated to weld the next weld area. Batteries contain multiple battery cells, and the total welding process for all weld areas can be quite time-consuming. Increasing battery welding time often requires adding multiple pieces of equipment to simultaneously weld multiple weld areas, which in turn increases processing costs.

[0062] Therefore, an embodiment of the present application provides a welding device and a welding method that can solve the above problems. The welding device of the embodiment of the present application includes a welding component and a measuring component. When the welding component is located at a first welding position to weld the first welding area of ​​the assembly to be welded, the measuring component measures the second welding position corresponding to the second welding area, and the second welding area is a welding area adjacent to the first welding area among the multiple welding areas included in the assembly to be welded; the welding component moves from the first welding position to the second welding position, and welds the second welding area at the second welding position; and so on, the welding equipment measures and welds the multiple welding areas in sequence. Because in this process, while the welding component is welding one of the welding areas, the measuring component will simultaneously measure the welding position of the adjacent welding area, compared to measuring and welding one welding area separately and then measuring and welding the next welding area, it can save time and shorten the duration of the entire welding process of multiple welding areas, thereby improving welding efficiency.

[0063] It should be understood that the welding equipment of the embodiments of the present application can be used to weld 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 a battery, and the welding area of ​​the assembly to be welded may include the location 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 location where welding is required between the battery cell and the insulating component, but the embodiments of the present application are not limited to this.

[0064] FIG1 shows a schematic block diagram of a welding device 1 according to an embodiment of the present application; FIG2 shows a schematic diagram of a plurality of welding areas 110 included in a component to be welded 2 according to an embodiment of the present application. For example, the component to be welded 2 shown in FIG2 can be welded by the welding device 1 shown in FIG1 . Specifically, as shown in FIG1 and FIG2 , the welding device 1 according to the embodiment of the present application includes: a welding component 11 for welding a first welding area of ​​a component to be welded 2 at a first welding position, the component to be welded 2 including a plurality of welding areas 110; a measuring component 12 for measuring a second welding position corresponding to a second welding area of ​​the component to be welded 2 when the welding component 11 welds the first welding area, the second welding area being adjacent to the first welding area; the welding component 11 is further used to move from the first welding position to the second welding position and weld the second welding area at the second welding position.

[0065] It should be understood that each of the multiple welding regions 110 in the embodiment of the present application may include at least one sub-welding region 120, and the welding component 11 welding any one of the multiple welding regions 110 may include simultaneously welding one or more sub-welding regions 120 included in the welding region 110. For example, welding the first welding region at a first welding position by the welding component 11 may include welding the at least one sub-welding region 120 included in the first welding region by the welding component 11 at the first welding position. FIG. 2 takes an example in which each welding region 110 includes four sub-welding regions 120, but the embodiment of the present application is not limited thereto.

[0066] In an embodiment of the present application, the component 2 to be welded includes multiple welding areas 110, wherein the first welding area is any one of the multiple welding areas 110, and the second welding area 110 is a welding area adjacent to the first welding area among the multiple welding areas 110; and, in the embodiment of the present application, the first welding area and the second welding area are adjacent, including: the welding sequence is adjacent, that is, after the welding part 11 completes welding of the first welding area, it will weld the second welding area.

[0067] In some embodiments, Figure 2 takes any five welding areas 110 included in the component 2 to be welded as an example, wherein each welding area 110 is represented by a dotted box, and the first welding area can be any one of the five welding areas 110, that is, the first welding area can be any one of the first welding area 1101 to the fifth welding area 1105 in Figure 2; and the second welding area can be any one of the first welding area 1101 to the fifth welding area 1105 in Figure 2 except the first welding area.

[0068] For example, if the welding component 2 needs to be welded in the order from the first welding area 1101 to the fifth welding area 1105, then when the first welding area is the first welding area 1101, the second welding area is the second welding area 1102, when the first welding area is the second welding area 1102, the second welding area is the third welding area 1103, and so on.

[0069] For another example, if the welding component 2 needs to be welded in the order from the fifth welding area 1105 to the first welding area 1101, then when the first welding area is the fifth welding area 1104, the second welding area is the fourth welding area 1104; when the first welding area is the fourth welding area 1104, the second welding area is the third welding area 1103, and so on.

[0070] For another example, if it is necessary to weld the first welding area 1101, the third welding area 1103 and the fifth welding area 1105, then when the first welding area is the first welding area 1101, the second welding area is the third welding area 1103, and when the first welding area is the third welding area 1103, the second welding area is the fifth welding area 1105, but the embodiments of the present application are not limited to this.

[0071] The first welding position of the embodiment of the present application corresponds to the first welding area, that is, the welding component 11 needs to weld the first welding area at the first welding position; similarly, the second welding position corresponds to the second welding area, and the welding component 11 needs to weld the second welding area at the second welding position.

[0072] It should be understood that the welding position in the embodiment of the present application means that when the welding component 11 is located at the welding position, welding can be performed on the welding area 110 corresponding to the welding position, and a better welding effect can be obtained, that is, the welding position can represent the preferred welding position of the welding component 11 when welding. For example, when the welding component 11 is located at the first welding position, the welding effect on the first welding area is better; similarly, when the welding component 11 is located at the second welding position, the welding effect on the second welding area is better, and so on, to determine the welding position corresponding to each welding area 110. For example, taking laser welding as an example, the welding component 11 usually needs to be at a certain distance from the corresponding welding area 110 to obtain a better welding effect. That is, based on the welding area 110, the preferred position of the welding component 11 for welding can be determined as the welding position.

[0073] Furthermore, if the welding region 110 includes multiple sub-welding regions 120, the welding position indicates that the welding component 11 can be positioned at the welding position to weld the multiple sub-welding regions 120 included in the welding region 110, with better welding effects. That is, based on the multiple sub-welding regions 120 included in the welding region 110, the welding positions corresponding to the multiple sub-welding regions 120 can be determined.

[0074] When the welding component 11 is at the first welding position and welding the first welding area, the measuring component 12 measures and calculates the second welding position. In this way, after completing welding of the first welding area, the welding component 11 can move from the first welding position to the second welding position and continue welding the second welding area. Similarly, when the welding component 11 is at the second welding position and welding the second welding area, the measuring component 12 will continue to measure and calculate the next welding position, so that the welding component 11 can continue to move and weld until the welding device 1 completes the measurement and welding of multiple welding areas 110 in sequence. Because in this process, while the welding component 11 is welding one welding area 110, the measuring component 12 will simultaneously measure the welding position corresponding to another welding area 110. Compared with measuring and welding one welding area 110 separately and then measuring and welding the next welding area 110, time can be saved and the duration of the entire welding process of multiple welding areas 110 can be shortened, thereby improving welding efficiency.

[0075] In the embodiment of the present application, the measuring component 12 is further used to measure a first welding position corresponding to the first welding area, so that the welding component 11 can be moved to the first welding position to weld the first welding area.

[0076] It should be understood that the measuring component 12 of the embodiment of the present application can be used to measure the welding positions corresponding to different welding regions 110 at different locations. For example, the measuring component 12 can measure a first welding position corresponding to a first welding region at a first position; and the measuring component 12 can measure a second welding position corresponding to a second welding region at a second position, where the first position and the second position are different. Because the positions of different welding regions 110 are different, arranging the measuring component 12 at different positions to measure the welding positions corresponding to the welding regions 110 can improve measurement accuracy, making the welding positions measured by the measuring component 12 more accurate, thereby improving welding efficiency.

[0077] In the embodiment of the present application, the welding component 11 moves synchronously with the measuring component 12. Considering that the measuring component 12 needs to measure the welding positions corresponding to multiple welding areas 110 at different positions, and the welding component 11 needs to move to the welding positions corresponding to the multiple welding areas 110, when the welding component 11 and the measuring component 12 are set to move synchronously, when the welding component 11 moves from a first welding position to a second welding position, the measuring component 12 can also move synchronously, without the need for separate control, thereby simplifying the structure of the welding equipment 1 and improving efficiency.

[0078] Figure 3 shows a schematic diagram of the partial structure of the welding equipment 1 according to an embodiment of the present application. For example, the welding equipment 1 shown in Figure 3 can be a possible implementation of the welding equipment 1 according to an embodiment of the present application. Figure 4 shows a schematic diagram of the structure of the welding component 11 and the measuring component 12 according to an embodiment of the present application. For example, Figure 4 shows the welding component 11 and the measuring component 12 included in the welding equipment 1 shown in Figure 3.

[0079] In some embodiments, the welding device 1 includes: a motion assembly 10, the welding component 11 and the measuring component 12 are integrated into the motion assembly 10, and the motion assembly 10 is used to control the movement of the welding component 11 and the measuring component 12. Specifically, as shown in Figures 3 and 4, the welding component 11 and the measuring component 12 are integrated into the motion assembly 10, which facilitates the control of the movement of the welding component 11 and the measuring component 12 through the motion assembly 10. For example, the welding component 11 and the measuring component 12 can be controlled to move separately through the motion assembly 10, or the welding component 11 and the measuring component 12 can be controlled to move synchronously. In addition, the integration of the welding component 11 and the measuring component 12 into the motion assembly 10 can simplify the structure of the welding device 1 and reduce the time for the welding component 11 and the measuring component 12 to avoid each other during movement, which is both convenient for control and reduces processing time.

[0080] In some embodiments, the motion assembly 10 can be connected to a motion device such as a robotic arm to facilitate the robotic arm's control of the movement of the motion assembly 10. Since the motion assembly 10 includes a welding component 11 and a measuring component 12, when the robotic arm drives the motion assembly 10 to move, the welding component 11 and the measuring component 12 also move accordingly, and the robotic arm can then implement the measurement and welding process of multiple welding areas 110 by the welding component 11 and the measuring component 12.

[0081] It should be understood that the movement trajectory of the welding component 11 and the measuring component 12 in the embodiment of the present application is related to the positions of the multiple welding areas 110. For example, the component 2 to be welded includes the multiple welding areas 110 arranged along the first direction X, and the motion component 10 is used to control the movement of the welding component 11 and the measuring component 12 along the first direction X. As shown in Figures 2 to 4, during the welding process of the component 2 to be welded, if the component 2 to be welded includes the multiple welding areas 110 arranged along the first direction X, the welding component 11 and the measuring component 12 can be controlled by the motion component 10 to move along the first direction X according to the arrangement order, so as to weld each welding area 110 in turn without excessive reciprocating motion or movement in other directions. As a result, the movement distance of the welding component 11 and the movement distance of the measuring component 12 are both shorter, thereby reducing the total welding time of the component 2 to be welded and improving welding efficiency.

[0082] In some embodiments, the distance between the welding component 11 and the measuring component 12 is related to the spacing between the plurality of welding regions 110. For example, if the plurality of welding regions 110 arranged along the first direction X are evenly distributed, that is, the spacing between the plurality of welding regions 110 is substantially equal, then the distance between the welding component 11 and the measuring component 12 can be adjusted based on the spacing between two adjacent welding regions 110 in the plurality of welding regions 110, so that when the welding component 11 is located at a first welding position to weld the first welding region, the measuring component 12 can be located at a second position to thereby measure a second welding position corresponding to the second welding region at the second position.

[0083] In the embodiment of the present application, the motion assembly 10 is used to control the welding component 11 and the measuring component 12 to move closer to and / or further away from the component to be welded 2. For example, when welding the component to be welded 2, the motion assembly 10 can control the welding component 11 and the measuring component 12 to move closer to the component to be welded 2; during the welding process of the component to be welded 2, the motion assembly 10 can control the welding component 11 and the measuring component 12 to move according to the welding sequence; after the welding of the component to be welded 2 is completed, the motion assembly 10 can control the welding component 11 and the measuring component 12 to move away from the component to be welded 2. The motion assembly 10 can control the movement of the welding component 11 and the measuring component 12 in all directions, which is simple to operate and can thereby improve welding efficiency.

[0084] It should be understood that the welding component 11 and the measuring component 12 of the embodiment of the present application can be implemented in various ways.

[0085] In some embodiments, to further improve welding efficiency, each welding region 110 may include multiple sub-welding regions 120, thereby enabling simultaneous welding of multiple sub-welding regions 120. FIG. 5 illustrates a schematic diagram of an end portion of a welding component 11 according to an embodiment of the present application. As shown in FIG. 4 and FIG. 5 , the embodiment of the present application uses an elliptical end portion of the welding component 11 as an example. This elliptical end portion can simultaneously perform welding at multiple positions. For example, FIG. 5 illustrates an example of an end portion capable of simultaneously performing welding at four positions.

[0086] In some embodiments, each of the multiple welding regions 110 includes multiple sub-welding regions 120; the welding component 11 is used to simultaneously weld the multiple sub-welding regions 120 included in the first welding region at the first welding position. Specifically, as shown in conjunction with Figures 2 and 5, the welding region 110 of the embodiment of the present application may include multiple sub-welding regions 120. Correspondingly, multiple welding positions 1121 corresponding to the multiple sub-welding regions 120 are provided at one end of the welding component 11. In this way, the welding process of multiple sub-welding regions 120 can be simultaneously achieved through the welding component 11, which can reduce the total welding time of the component 2 to be welded, thereby improving the welding efficiency of the component 2 to be welded.

[0087] It should be understood that the welding component 11 of the present embodiment can be implemented using a variety of welding mechanisms. For example, the welding component 11 includes a galvanometer laser welding machine, which can control the direction of the laser through the galvanometer to weld the sub-welding area 120 of the welding area 110, thereby achieving high welding speed and high welding precision, thereby saving time and cost.

[0088] In some embodiments, the welding component 11 may include an air knife 111 and a welding structure 112, wherein the welding structure 112 is used to perform a welding operation. For example, the welding structure 112 may include multiple welding positions 1121 for welding the sub-welding areas 120 of each welding area 110. Taking FIG5 as an example, the welding structure 112 may include four welding positions 1121, which can be used to weld the four sub-welding areas 120 included in each welding area 110. The air knife 111 can be used to handle impurities such as dust generated by the welding structure 112 during the welding operation. In some embodiments, the welding component 11 may include a laser connection component 13, which can be used to connect a laser to perform laser welding.

[0089] It should be understood that the measuring component 12 of the embodiment of the present application can be implemented in various ways. For example, the measuring component 12 can include a laser rangefinder that transmits a laser signal and measures the return laser signal to measure the distance. For another example, the measuring component 12 can include an ultrasonic rangefinder, but the embodiment of the present application is not limited thereto.

[0090] In an embodiment of the present application, the welding equipment 1 also includes: a pressure plate assembly 30, which is located on the side of the component to be welded 2 facing the welding part 11 and the measuring part 12, and the pressure plate assembly 30 is used to locate the positions of multiple welding areas 110 of the component to be welded 2, so as to determine the positions of multiple welding areas 110; and the pressure plate assembly 30 can also be used to fix the component to be welded 2, so that the multiple welding areas 110 of the component to be welded 2 are not easily moved and dislocated during the welding process, thereby improving the measurement accuracy of the measuring part 12 and the welding accuracy of the welding part 11, and thus improving the welding efficiency.

[0091] The pressure plate assembly 30 of the embodiment of the present application is located on the side of the component 2 to be welded facing the welding component 11 and the measuring component 12, so as to facilitate the pressure plate assembly 30 to position and fix the multiple welding areas 110.

[0092] In addition, the welding component 11 and the measuring component 12 are located on the side of the platen assembly 30 away from the component to be welded 2, that is, the platen assembly 30 is located between the component to be welded 2 and the welding component 11, or in other words, between the component to be welded 2 and the measuring component 12. In this way, before welding, the platen assembly 30 can be moved to the positions of the multiple welding areas 110 of the component to be welded 2 to fix and position the multiple welding areas 110; then, the measuring component 12 and the welding component 11 are moved to the side of the platen assembly 30 away from the component to be welded 2 to perform measurement and welding operations; and after welding is completed, the measuring component 12 and the welding component 11 are moved away, and the platen assembly 30 is then moved, which is simple to operate and easy to control.

[0093] In some embodiments, the pressing plate assembly 30 includes: a pressing plate 31, the pressing plate 31 being provided with a plurality of through holes 311, the pressing plate 31 being used to position the plurality of through holes 311 with the plurality of welding areas 110, so that the welding component 11 can weld the plurality of welding areas 110 through the plurality of through holes 311; and a control component 32, being used to control the pressing plate 31 to approach and / or move away from the component to be welded 2. Specifically, the plurality of through holes 311 provided on the pressing plate 31 can be used to expose the plurality of welding areas 110. For example, each through hole 311 can correspond to one or more welding areas 110, or can also correspond to one or more sub-welding areas 120 included in one welding area 110. For example, in the embodiment of the present application, each through hole 311 is taken as an example to correspond to one sub-welding area 120, so that each sub-welding area 120 can be exposed through the through hole 311. In this way, the control component 32 can control the pressure plate 31 to be close to the component to be welded 2, and control the pressure plate 31 to position multiple welding areas 110, so that the welding component 11 can weld multiple welding areas 110; after welding is completed, the control component 32 can also control the pressure plate 31 to be away from the component to be welded 2, so as to facilitate welding of other components 2 to be welded.

[0094] FIG6 shows another partial structural schematic diagram of the welding device 1 according to an embodiment of the present application. For example, FIG6 may be another partial structural schematic diagram of the welding device 1 shown in FIG3 , wherein FIG6 does not show the welding component 11 and the measuring component 12 included in the welding device 1 shown in FIG3 . FIG7 shows a partial structural schematic diagram of the pressure plate assembly 30 according to an embodiment of the present application. For example, FIG7 is a partial structural schematic diagram of the pressure plate assembly 2 shown in FIG6 from a top view. FIG8 shows a structural schematic diagram of the pressure plate 31 according to an embodiment of the present application. For example, FIG8 may be a structural schematic diagram of the pressure plate 31 included in the pressure plate assembly 2 shown in FIG6 and FIG7 .

[0095] As shown in Figures 6 to 8, the embodiment of the present application takes the example of each through hole 311 corresponding to a sub-welding area 120, so that each sub-welding area 120 can be exposed through the through hole 311, and the welding component 11 welds each sub-welding area 120 through the through hole 311. The control component 32 of the embodiment of the present application can be used to control the movement of the pressure plate 31. For example, the control component 32 can control the pressure plate 31 to move along the second direction Y and / or along the third direction Z. The second direction Y, the third direction X, and the first direction X are perpendicular to each other, and the first direction X is the arrangement direction of the multiple welding areas 110, but the embodiment of the present application is not limited to this.

[0096] It should be understood that the shape and size of the through hole 311 in the embodiment of the present application can be set according to the actual application. For example, the cross-section of the through hole 311 can be circular or rectangular to facilitate processing. For another example, the shape of the through hole 311 can correspond to the welding nozzle located between the pressure plate 31 and the component 2 to be welded. For example, it can be consistent with the shape of the welding nozzle so that the welding component 11 can pass through the through hole 311 and the welding nozzle to weld the component 2 to be welded.

[0097] In some embodiments, the pressure plate assembly 30 further includes a dust collection component 33 for collecting dust generated during welding of the plurality of welding areas 110, thereby reducing the impact of dust and other impurities generated during welding on the welding process and improving welding efficiency and weld strength. As shown in Figures 6 to 8, the dust collection component 33 may include a dust collection pipeline, which may be connected to a welding nozzle. The welding nozzle may be located between the through hole 311 of the pressure plate 31 and the welding area 110 of the component 2 to be welded. In this way, during the welding process, dust generated at the welding nozzle can be quickly absorbed and uniformly collected by the dust collection pipeline, reducing the impact of dust on the welding process.

[0098] In some embodiments, as shown in Figures 6 to 8, the pressure plate 31 may also include a mounting structure 312, which can be used to install and fix the dust suction component 33. For example, the mounting structure 312 may include a mounting hole, which can be used to install and fix part of the structure of the dust suction pipeline of the dust suction component 33.

[0099] In some embodiments, when the welding component 11 welds any one of the multiple welding areas 110, all the dust suction pipes included in the dust suction component 33 can be in an open state to simplify the structure of the dust suction component 33 and facilitate control; alternatively, the dust suction pipe corresponding to the welding area 110 included in the dust suction component 33 can be opened, while other dust suction pipes can be in a closed state to save power consumption. The embodiments of the present application are not limited to this.

[0100] In some embodiments, as shown in Figures 6 to 8, the pressure plate 31 may further include a blocking structure 313. The blocking structure 313 may be located between the plurality of through-holes 311 to reduce the impact between the plurality of sub-welding areas 120 and the impact between the plurality of welding areas 110. For example, the blocking structure 313 may be a protruding structure of the pressure plate 31; for another example, when the measuring component 12 uses a laser signal for distance measurement, the blocking structure 313 may be used to block interference from the laser signal; for another example, when the welding component 11 uses laser welding technology for welding, the blocking structure 313 may also be used to block interference from the laser signal, but the embodiments of the present application are not limited to this.

[0101] In the embodiment of the present application, the welding apparatus 1 further includes a bracket 40 for securing the component to be welded 2. As shown in Figures 6 to 8, the bracket 40 can be used to secure the component to be welded 2 to reduce misalignment of the component to be welded 2 during the welding process. After welding of the component to be welded 2 is completed, the component to be welded 2 is separated from the bracket 40. In addition, the bracket 40 can also be used to mount a pressure plate assembly 30, which can be moved relative to the bracket 40 to position multiple welding areas 110 of the component to be welded 2.

[0102] It should be understood that the assembly 2 to be welded in the embodiment of the present application may include any component that needs to be welded. For example, FIG9 shows a schematic structural diagram of a plurality of battery cells 21 in the embodiment of the present application.

[0103] In some embodiments, the assembly 2 to be welded includes a busbar 22 and a plurality of battery cells 21. The busbar 22 is used to electrically connect to the electrode terminals 211 of the plurality of battery cells 21. The plurality of welding regions 110 include welding regions between the busbar 22 and the electrode terminals 211. Specifically, the busbar 22 can achieve electrical connection between the plurality of battery cells 21 by connecting to the electrode terminals 211 of the battery cells 21. Furthermore, the busbar 22 can be fixed to the electrode terminals 211 of the battery cells 21 by welding. The busbar 22 can then be welded to the plurality of electrode terminals 211 using the welding device 1, thereby improving the welding efficiency between the busbar 22 and the electrode terminals 211 and thereby improving the processing efficiency of the battery cells 21.

[0104] 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 and the positive electrode tab may be directly or indirectly connected, and the negative electrode terminal and the negative electrode tab may be directly 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.

[0105] 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 on different walls. For example, FIG9 mainly uses the example of a battery cell 21 including 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 to this.

[0106] The battery cells 21 of the embodiments of the present application can be used for processing and assembly into batteries. 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 hybrid connection, and hybrid 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 can first be connected in series, in parallel, or in hybrid connection to form a battery module, and a plurality of battery modules can then be connected in series, in parallel, or in hybrid connection to form a battery. In other words, a plurality of battery cells 21 can directly form a battery, or they can first form a battery module, and the battery module can then form a battery.

[0107] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use batteries.

[0108] Electrical equipment can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. Vehicles can be fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. 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, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0109] In some embodiments, the assembly 2 to be welded includes a plurality of battery cells 21 arranged along a first direction X. The plurality of battery cells 21 include two electrode terminals 211 arranged along a second direction Y, wherein the first direction X is perpendicular to the second direction Y. Each of the plurality of welding regions 110 includes a welding region between at least one electrode terminal 211 of the battery cell 21 and the busbar 22. As shown in FIG9 , for the plurality of battery cells 21 arranged along the first direction X, each battery cell 21 may include multiple electrode terminals 211. For example, in this example, each battery cell 21 includes two electrode terminals 211 located on the same wall. Each welding region 110 may include a welding region between one or more electrode terminals 211 of the battery cells 21 and the busbar 22. That is, the electrode terminals 211 of the same battery cell 21 correspond to the same welding region 110. Therefore, the multiple electrode terminals 211 of the same battery cell 21 and the corresponding busbar 22 can be welded simultaneously by the welding component 11, thereby improving welding efficiency and accelerating the welding between the plurality of battery cells 21 and the busbar 22.

[0110] For example, as shown in Figure 9, the welding area between each electrode terminal 211 and the corresponding busbar component 22 can correspond to a sub-welding area 120; taking the example that each welding area 110 includes four sub-welding areas 120, each welding area 110 corresponds to the electrode terminals 211 included in two battery cells 21, that is, the welding component 11 can weld the electrode terminals 211 included in two battery cells 21 at one welding position, which can increase the welding speed and thereby improve the processing efficiency of the battery cells 21.

[0111] The welding device 1 according to the embodiment of the present application is described in detail above in conjunction with the accompanying drawings. The welding method according to the embodiment of the present application will be described below. For parts not described in detail, please refer to the aforementioned embodiments.

[0112] FIG10 shows a schematic flow chart of a welding method 500 according to an embodiment of the present application. The method 500 can be implemented by a welding device 1. As shown in FIG10 , the method 500 may include: S510, welding a first welding region of a component 2 to be welded using a welding component 11 at a first welding position, where the component 2 to be welded includes a plurality of welding regions 110; S520, while the welding component 11 is welding the first welding region, measuring a second welding position corresponding to a second welding region of the component 2 to be welded using a measuring component 12, where the second welding region is adjacent to the first welding region; S530, moving the welding component 11 from the first welding position to the second welding position, and welding the second welding region at the second welding position.

[0113] In some embodiments, the welding component 11 and the measuring component 12 move synchronously.

[0114] In some embodiments, the method 500 further includes: controlling the welding component 11 and the measuring component 12 to approach and / or move away from the component to be welded 2 .

[0115] In some embodiments, each welding area 110 in the multiple welding areas 110 includes multiple sub-welding areas 120; and the first welding area is welded by the welding component 11 at the first welding position, including: at the first welding position, the multiple sub-welding areas 120 included in the first welding area are welded simultaneously by the welding component 11.

[0116] In some embodiments, the method 500 further includes: positioning the positions of the multiple welding areas 110 of the component to be welded 2 by using a pressure plate assembly 30, and the pressure plate assembly 30 is located on the side of the component to be welded 2 facing the welding component 11 and the measuring component 12.

[0117] In some embodiments, the assembly 2 to be welded includes a busbar 22 and multiple battery cells 21 , the busbar 22 is used to electrically connect to the electrode terminals 211 of the multiple battery cells 21 , and the multiple welding areas 110 include welding areas between the busbar 22 and the electrode terminals 211 .

[0118] In some embodiments, the assembly 2 to be welded includes a plurality of battery cells 21 arranged along a first direction X, the plurality of battery cells 21 include two electrode terminals 211 arranged along a second direction Y, the first direction X is perpendicular to the second direction Y, and each welding area 110 in the plurality of welding areas 110 includes a welding area between the electrode terminal 211 of at least one battery cell 21 and the busbar component 22.

[0119] It should be understood that the welding method 500 of the embodiment of the present application can be implemented by the welding device 1 described above, and for the sake of brevity, it will not be described here one by one.

[0120] Therefore, for the welding equipment 1 and welding method 500 of the embodiment of the present application, when the welding component 11 is located at the first welding position to weld the first welding area, the measuring component 12 can measure and calculate the second welding position. In this way, the welding component 11 can move from the first welding position to the second welding position after completing the welding of the first welding area, and continue to weld the second welding area; and so on, the measuring component 12 will continue to measure and calculate the next welding position when the welding component 11 is located at the second welding position to weld the second welding area, so that the welding component 11 continues to move and weld until the welding equipment 1 completes the measurement and welding of multiple welding areas 110 in sequence.

[0121] During this process, while the welding component 11 is welding one of the welding areas 110, the measuring component 12 will simultaneously measure the welding position corresponding to another welding area 110. Compared with measuring and welding one welding area 110 separately and then measuring and welding the next welding area 110, this can save time and shorten the duration of the entire welding process of multiple welding areas 110, thereby improving welding efficiency.

[0122] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described 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 encompasses all technical solutions within the scope of the claims.

Claims

1. A welding device, characterized in that: include: A welding component, used for welding a first welding area of ​​a component to be welded at a first welding position, wherein the component to be welded includes a plurality of welding areas; a measuring component, used for measuring a second welding position corresponding to a second welding area of ​​the assembly to be welded, when the welding component welds the first welding area, the second welding area being adjacent to the first welding area; The welding component is further used to move from the first welding position to the second welding position, and to weld the second welding area at the second welding position.

2. The welding device according to claim 1, characterized in that The welding component moves synchronously with the measuring component.

3. The welding device according to claim 1 or 2, characterized in that: The welding equipment comprises: A motion component, wherein the welding component and the measuring component are integrated in the motion component, and the motion component is used to control the movement of the welding component and the measuring component.

4. The welding device according to claim 3, characterized in that: The assembly to be welded includes the plurality of welding areas arranged along a first direction, and the motion assembly is used to control the welding component and the measuring component to move along the first direction.

5. The welding device according to claim 3 or 4, characterized in that: The motion component is used to control the welding component and the measuring component to approach and / or move away from the component to be welded.

6. The welding device according to any one of claims 1 to 5, characterized in that Each of the plurality of welding regions comprises a plurality of sub-welding regions; The welding parts are used for: At the first welding position, a plurality of sub-welding areas included in the first welding region are welded simultaneously.

7. The welding device according to any one of claims 1 to 6, characterized in that The welding equipment also includes: A pressing plate assembly is located on a side of the assembly to be welded that faces the welding component and the measuring component, and is used to locate the positions of multiple welding areas of the assembly to be welded.

8. The welding device according to claim 7, characterized in that The welding component and the measuring component are located on a side of the pressing plate assembly away from the assembly to be welded.

9. The welding device according to claim 7 or 8, characterized in that: The pressure plate assembly comprises: A pressing plate, the pressing plate being provided with a plurality of through holes, the pressing plate being used to position the plurality of through holes and the plurality of welding areas so that the welding component can weld the plurality of welding areas through the plurality of through holes; The control component is used to control the pressing plate to approach and / or move away from the component to be welded.

10. The welding device according to any one of claims 7 to 9, characterized in that The pressure plate assembly also includes: A dust collecting component is used to collect dust generated by welding the multiple welding areas.

11. The welding device according to any one of claims 1 to 10, characterized in that The assembly to be welded includes a busbar and a plurality of battery cells, the busbar is used to be electrically connected to electrode terminals of the plurality of battery cells, and the plurality of welding regions include welding regions between the busbar and the electrode terminals.

12. The welding device according to claim 11, characterized in that The assembly to be welded includes a plurality of battery cells arranged along a first direction, the plurality of battery cells include two electrode terminals arranged along a second direction, the first direction is perpendicular to the second direction, and each of the plurality of welding regions includes a welding region between an electrode terminal of at least one battery cell and the busbar component.

13. The welding device according to any one of claims 1 to 12, characterized in that The welding component includes a galvanometer laser welding machine.

14. A welding method, characterized in that: include: At a first welding position, welding is performed on a first welding region of a component to be welded by a welding component, wherein the component to be welded includes a plurality of welding regions; When the welding component welds the first welding area, a second welding position corresponding to a second welding area of ​​the assembly to be welded is measured by a measuring component, wherein the second welding area is adjacent to the first welding area; The welding component is moved from the first welding position to the second welding position, and the second welding area is welded at the second welding position.

15. The welding method according to claim 14, characterized in that: The welding component moves synchronously with the measuring component.

16. The welding method according to claim 14 or 15, characterized in that: The method further comprises: The welding component and the measuring component are controlled to be close to and / or away from the component to be welded.

17. The welding method according to any one of claims 14 to 16, characterized in that: Each of the plurality of welding regions comprises a plurality of sub-welding regions; The step of welding the first welding area at the first welding position by means of a welding component comprises: At the first welding position, a plurality of sub-welding areas included in the first welding region are welded simultaneously by a welding component.

18. The welding method according to any one of claims 14 to 17, characterized in that: The method further comprises: The positions of the multiple welding areas of the component to be welded are positioned by a pressing plate assembly, and the pressing plate assembly is located on a side of the component to be welded facing the welding component and the measuring component.

19. The welding method according to any one of claims 14 to 18, characterized in that: The assembly to be welded includes a busbar and a plurality of battery cells, the busbar is used to be electrically connected to electrode terminals of the plurality of battery cells, and the plurality of welding regions include welding regions between the busbar and the electrode terminals.

20. The welding method according to claim 19, characterized in that The assembly to be welded includes a plurality of battery cells arranged along a first direction, the plurality of battery cells include two electrode terminals arranged along a second direction, the first direction is perpendicular to the second direction, and each of the plurality of welding regions includes a welding region between an electrode terminal of at least one battery cell and the busbar component.

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