Welding apparatus and welding method

Abstract

The embodiment of the invention discloses welding equipment and a welding method. The welding equipment comprises a welding part used for welding a first welding area of a to-be-welded assembly at a first welding position, and the to-be-welded assembly comprises a plurality of welding areas; the measuring component is used for measuring a second welding position corresponding to a second welding area of the to-be-welded assembly under the condition that the first welding area is welded by the welding component, and the second welding area is 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 the second welding area at the second welding position. According to the welding equipment and the welding method, the welding efficiency can be improved.

Description

Technical Field

[0001] 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

[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, etc. In addition, the processing efficiency of the battery must also be considered. The battery includes a plurality of battery cells connected in series and / or in parallel, each battery cell having 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 the welding efficiency to improve the processing efficiency of the battery is a technical problem that needs to be solved urgently. Summary of the invention

[0003] The embodiments of the present application provide a welding device and a welding method, which can improve welding efficiency.

[0004] In a first aspect, a welding device is provided, which includes: a welding component, used to weld 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 to measure 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, wherein the second welding area is adjacent to the first welding area; the welding component is also used to: move from the first welding position to the second welding position, and weld the second welding area at the second welding position.

[0005] Therefore, in the welding equipment 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. Since 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.

[0006] In some embodiments, the welding component moves synchronously with the measuring component. 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, when the welding component and the measuring component are set to move synchronously, when the welding component moves from a first welding position to a second welding position, the measuring component can also move synchronously without separate control, thereby simplifying the structure of the welding equipment and improving efficiency.

[0007] In some embodiments, the welding equipment includes: a motion component, the welding component and the measuring component are integrated into the motion component, and the motion component 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 component facilitates the control of the movement of the welding component and the measuring component through the motion component. For example, the welding component and the measuring component can be controlled to move separately through the motion component, or the welding component and the measuring component can be controlled to move synchronously. In addition, the integration of the welding component and the measuring component into the motion component can simplify the structure of the welding equipment and reduce the time for the welding component and the measuring component to avoid each other during movement, which is convenient for control and can reduce the processing time.

[0008] In some embodiments, the assembly to be welded includes multiple 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 so as to weld each welding area in turn without requiring 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 assembly to be welded and improving welding efficiency.

[0009] In some embodiments, the motion assembly is used to control the welding component and the measuring component to move closer to and / or farther from the component to be welded. The motion assembly can control the movement of the welding component and the measuring component in all directions, which is easy to operate and can improve welding efficiency.

[0010] 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.

[0011] 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 component and the measuring component, and the pressure plate assembly is used to locate 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 misplaced during the welding process, thereby improving the measurement accuracy of the measuring component and the welding accuracy of the welding component, thereby improving the welding efficiency.

[0012] 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.

[0013] 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.

[0014] In some embodiments, the pressure plate assembly also 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 and improve welding efficiency and welding strength.

[0015] In some embodiments, the assembly to be welded includes a busbar component and a plurality of battery cells, the busbar component is used to be electrically connected to the electrode terminals of the plurality of battery cells, the plurality of welding areas include welding areas between the busbar component and the electrode terminals, and the busbar component and the plurality of 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.

[0016] 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 regions includes 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 a busbar component, that is, the electrode terminal of the same battery cell corresponds to the same welding region, and the plurality of electrode terminals included in the same battery cell and the corresponding busbar component can be welded simultaneously by the welding component, which can improve the welding efficiency and speed up the welding efficiency between the plurality of battery cells and the busbar component.

[0017] 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 costs.

[0018] In a second aspect, a welding method is provided, which comprises: at a first welding position, welding a first welding area of ​​a component to be welded by a welding component, wherein the component to be welded comprises a plurality of 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.

[0019] 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, 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.

[0020] In some embodiments, the welding component moves synchronously with the measuring component.

[0021] 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.

[0022] In some embodiments, each of the multiple welding areas includes multiple sub-welding areas; and at the first welding position, the first welding area is welded by a welding component, including: at the first welding position, the multiple sub-welding areas included in the first welding area are welded simultaneously by a welding component.

[0023] In some embodiments, the method further comprises: positioning the positions of the plurality of welding regions of the component to be welded by means of 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.

[0024] In some embodiments, the assembly to be welded includes a busbar component and a plurality of battery cells, the busbar component 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 component and the electrode terminals.

[0025] 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 an electrode terminal of at least one battery cell and the busbar component. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic block diagram of a welding device according to an embodiment of the present application;

[0027] Figure 2 A schematic diagram of multiple welding areas according to an embodiment of the present application;

[0028] Figure 3 A schematic diagram of a partial structure of a welding device according to an embodiment of the present application;

[0029] Figure 4 This is a schematic structural diagram of a welding component and a measuring component according to an embodiment of the present application;

[0030] Figure 5 This is a schematic structural diagram of an end portion of a welding component according to an embodiment of the present application;

[0031] Figure 6 Another partial structural schematic diagram of a welding device according to an embodiment of the present application;

[0032] Figure 7 This is a partial structural schematic diagram of a pressure plate assembly according to an embodiment of the present application;

[0033] Figure 8 This is a schematic structural diagram of a pressing plate according to an embodiment of the present application;

[0034] Fig. 9 A schematic diagram of the structure of multiple battery cells according to an embodiment of the present application;

[0035] Fig.10 The figure is a schematic flow chart of a welding method according to an embodiment of the present application.

[0036] In the drawings, the drawings are not drawn to scale.

[0037] 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-installing 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-collecting component. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

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

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same 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.

[0041] 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.

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

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

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

[0045] The term "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).

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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, so as to realize the electrical connection between the multiple battery cells through the busbar. In the welding process, taking any welding area as an example, the copper nozzle pressure plate is first moved to the welding area to locate the busbar and electrode terminal of the welding area; then the best welding position is measured by the rangefinder, the rangefinder is moved away after measurement, and then the welding equipment is moved to the best welding position to weld the electrode terminal and busbar of the welding area. After welding any welding area, the above process is repeated, and then the next welding area is welded. The battery includes multiple battery cells, and the total process of completing the welding of all welding areas takes a long time. If the welding time of the battery is to be increased, it is often necessary to add multiple devices to weld multiple welding areas simultaneously, which will increase the processing cost.

[0059] Therefore, the embodiment of the present application provides a welding device and a welding method, which 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 in 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 multiple welding areas in turn. 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 reduce the duration of the whole process of welding multiple welding areas, thereby improving welding efficiency.

[0060] It should be understood that the welding equipment of the embodiment 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 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 thereto.

[0061] Figure 1 A schematic block diagram of a welding device 1 according to an embodiment of the present application is shown; Figure 2 A schematic diagram showing a plurality of welding regions 110 included in a component 2 to be welded according to an embodiment of the present application is shown, for example, Figure 2 The assembly 2 to be welded can be Figure 1 The welding device 1 shown in the figure is used for welding. Specifically, as Figure 1 and Figure 2 As shown, the welding equipment 1 of the embodiment of the present application includes: a welding component 11, which is used to weld a first welding area of ​​a component to be welded 2 at a first welding position, and the component to be welded 2 includes a plurality of welding areas 110; a measuring component 12, which is used to measure 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, and the second welding area is adjacent to the first welding area; the welding component 11 is also used to: move from the first welding position to the second welding position, and weld the second welding area at the second welding position.

[0062] 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 welding one or more sub-welding regions 120 included in the welding region 110 at the same time. For example, the welding component 11 welding the first welding region at the first welding position may include the welding component 11 welding at least one sub-welding region 120 included in the first welding region at the first welding position, wherein: Figure 2 It is taken as an example that each welding region 110 includes four sub-welding regions 120 , but the embodiments of the present application are not limited thereto.

[0063] 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 the welding of the first welding area, it will weld the second welding area.

[0064] In some embodiments, Figure 2 Taking any five welding regions 110 included in the assembly 2 to be welded as an example, wherein each welding region 110 is represented by a dotted frame, the first welding region can be any one of the five welding regions 110, that is, the first welding region can be Figure 2 The first welding area 1101 to the fifth welding area 1105 are any welding areas; and the second welding area can be Figure 2 Any welding area from the first welding area 1101 to the fifth welding area 1105 except the first welding area.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] It should be understood that the welding position of the embodiment of the present application indicates that when the welding component 11 is located at the welding position, the welding area 110 corresponding to the welding position can be welded, and a better welding effect can be obtained, that is, the welding position can indicate 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 of the first welding area is better; similarly, when the welding component 11 is located at the second welding position, the welding effect of the second welding area is better, and so on, to determine the welding position corresponding to each welding area 110. For example, taking the laser welding method 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, according to the welding area 110, the preferred position of the welding component 11 for welding can be determined as the welding position.

[0070] In addition, if the welding area 110 includes a plurality of sub-welding areas 120, the welding position indicates that the welding component 11 can be located at the welding position to weld the plurality of sub-welding areas 120 included in the welding area 110, and the welding effect is better. That is, according to the plurality of sub-welding areas 120 included in the welding area 110, the welding positions corresponding to the plurality of sub-welding areas 120 can be determined.

[0071] When the welding component 11 is located at the first welding position and welds the first welding area, the measuring component 12 measures and calculates the second welding position, so that 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; by analogy, when the welding component 11 is located at the second welding position and welds the second welding area, the measuring component 12 will continue to measure and calculate the next welding position, so that the welding component 11 continues to move and weld until the welding device 1 sequentially completes the measurement and welding of multiple welding areas 110. In 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, it can save time and shorten the duration of the entire welding process of multiple welding areas 110, thereby improving welding efficiency.

[0072] 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.

[0073] 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 areas 110 at different positions. For example, the measuring component 12 can measure the first welding position corresponding to the first welding area at the first position; and the measuring component 12 can measure the second welding position corresponding to the second welding area at the second position, wherein the first position is different from the second position. Since the positions of different welding areas 110 are different, setting the measuring component 12 at different positions to measure the welding positions corresponding to the welding areas 110 can improve the measurement accuracy, so that the welding positions measured by the measuring component 12 are more accurate, thereby improving the welding efficiency.

[0074] 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 the 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 the first welding position to the second welding position, the measuring component 12 can also move synchronously without separate control, thereby simplifying the structure of the welding device 1 and improving efficiency.

[0075] Figure 3 A partial structural schematic diagram of a welding device 1 according to an embodiment of the present application is shown, for example, Figure 3The welding device 1 shown may be a possible implementation of the welding device 1 of the embodiment of the present application; Figure 4 The schematic diagram of the structure of the welding component 11 and the measuring component 12 of the embodiment of the present application is shown, for example, Figure 4 Shows Figure 3 The welding device 1 shown includes a welding component 11 and a measuring component 12 .

[0076] In some embodiments, the welding device 1 includes: a motion component 10, the welding component 11 and the measuring component 12 are integrated in the motion component 10, and the motion component 10 is used to control the movement of the welding component 11 and the measuring component 12. Specifically, Figure 3 and Figure 4 As shown, the welding component 11 and the measuring component 12 are integrated into the motion component 10, so that the movement of the welding component 11 and the measuring component 12 can be controlled by the motion component 10. For example, the welding component 11 and the measuring component 12 can be controlled to move separately by the motion component 10, or the welding component 11 and the measuring component 12 can be controlled to move synchronously. In addition, the welding component 11 and the measuring component 12 are integrated into the motion component 10, which 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 convenient for control and can reduce the processing time.

[0077] In some embodiments, the motion assembly 10 can be used to connect to a motion device such as a robot arm, so as to control the movement of the motion assembly 10 through the robot arm. Since the motion assembly 10 includes a welding component 11 and a measuring component 12, when the robot arm drives the motion assembly 10 to move, the welding component 11 and the measuring component 12 also move accordingly, and then the robot arm can realize the measurement and welding process of the welding component 11 and the measuring component 12 on multiple welding areas 110.

[0078] 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 plurality of welding areas 110. For example, the assembly 2 to be welded includes the plurality of 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. Figures 2 to 4 As shown, during the welding process of the component to be welded 2, if the component to be welded 2 includes a plurality of welding areas 110 arranged along a first direction X, the welding component 11 and the measuring component 12 can be controlled to move along the first direction X by the motion component 10 according to the arrangement order, so as to weld each welding area 110 in turn without excessive reciprocating motion or movement in other directions, so that the moving distance of the welding component 11 and the moving distance of the measuring component 12 are both shorter, thereby reducing the total welding time of the component to be welded 2 and improving the welding efficiency.

[0079] In some embodiments, the distance between the welding component 11 and the measuring component 12 is related to the spacing between the multiple welding areas 110. For example, if the multiple welding areas 110 arranged along the first direction X are evenly distributed, that is, the spacing between the multiple welding areas 110 is substantially equal, then the distance between the welding component 11 and the measuring component 12 can be adjusted according to the spacing between two adjacent welding areas 110 in the multiple welding areas 110, so that when the welding component 11 is located at the first welding position to weld the first welding area, the measuring component 12 can be located at the second position, and then the second welding position corresponding to the second welding area is measured at the second position.

[0080] In the embodiment of the present application, the motion component 10 is used to control the welding component 11 and the measuring component 12 to approach and / or move away from the component to be welded 2. For example, when the component to be welded 2 needs to be welded, the motion component 10 can control the welding component 11 and the measuring component 12 to approach the component to be welded 2; during the welding process of the component to be welded 2, the motion component 10 can control the welding component 11 and the measuring component 12 to move in a welding sequence; after the welding work of the component to be welded 2 is completed, the motion component 10 can control the welding component 11 and the measuring component 12 to move away from the component to be welded 2. The motion component 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 improve the welding efficiency.

[0081] 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.

[0082] In some embodiments, in order to further improve the welding efficiency, each welding area 110 may be configured to include a plurality of sub-welding areas 120 , thereby achieving synchronous welding of the plurality of sub-welding areas 120 . Figure 5 FIG. 1 shows a schematic diagram of the end of the welding component 11 of the embodiment of the present application. Figure 4 and Figure 5 As shown, in the embodiment of the present application, one end of the welding component 11 is an ellipse as an example, and the end of the ellipse can be welded at multiple positions at the same time, for example, Figure 5 Take the example that this end can perform welding in 4 positions simultaneously.

[0083] In some embodiments, each of the plurality of welding regions 110 includes a plurality of sub-welding regions 120; the welding component 11 is used to simultaneously weld the plurality of sub-welding regions 120 included in the first welding region at the first welding position. Figure 2 and Figure 5As shown, the welding area 110 of the embodiment of the present application may include a plurality of sub-welding areas 120, and correspondingly, a plurality of welding positions 1121 corresponding to the plurality of sub-welding areas 120 are provided at one end of the welding component 11. In this way, the welding process of the plurality of sub-welding areas 120 can be simultaneously realized by the welding component 11, and the total welding time of the assembly 2 to be welded can be reduced, thereby improving the welding efficiency of the assembly 2 to be welded.

[0084] It should be understood that the welding component 11 of the embodiment of the present application can be realized by 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, with a fast welding speed and high welding accuracy, which can save time and cost.

[0085] 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 a plurality of welding positions 1121 for welding the sub-welding areas 120 of each welding area 110. Figure 5 For 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 process impurities such as dust generated during the welding operation of the welding structure 112. In some embodiments, the welding component 11 may include a laser connecting component 13, which can be used to connect a laser to perform laser welding through the laser.

[0086] It should be understood that the measuring component 12 of the embodiment of the present application can be implemented in a variety of ways. For example, the measuring component 12 may include a laser rangefinder, which measures the distance by emitting a laser signal and measuring the returned laser signal. For another example, the measuring component 12 may include an ultrasonic rangefinder, but the embodiment of the present application is not limited thereto.

[0087] 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 the 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 or misplaced during the welding process, thereby improving the measurement accuracy of the measuring part 12 and the welding accuracy of the welding part 11, thereby improving the welding efficiency.

[0088] 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.

[0089] 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 2 to be welded, that is, the platen assembly 30 is located between the component 2 to be welded and the welding component 11, or in other words, between the component 2 to be welded 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 2 to be welded to fix and position the multiple welding areas 110; then, the measuring component 12 and the welding component 11 are moved on the side of the platen assembly 30 away from the component 2 to be welded to perform measurement and welding operations; and after welding is completed, the measuring component 12 and the welding component 11 are moved away, and then the platen assembly 30 is moved, which is simple to operate and easy to control.

[0090] In some embodiments, the pressing plate assembly 30 includes: a pressing plate 31, the pressing plate 31 is provided with a plurality of through holes 311, the pressing plate 31 is used to position the plurality of through holes 311 with the plurality of welding areas 110, so that the welding component 11 is welded to the plurality of welding areas 110 through the plurality of through holes 311; a control component 32, 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 corresponds to one sub-welding area 120 as an example, 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 pressing plate 31 to be close to the component 2 to be welded, and control the pressing plate 31 to position multiple welding areas 110, so as to facilitate the welding component 11 to weld multiple welding areas 110; after welding is completed, the control component 32 can also control the pressing plate 31 to be away from the component 2 to be welded, so as to facilitate the welding of other components 2 to be welded.

[0091] Figure 6 Another partial structural schematic diagram of the welding device 1 according to the embodiment of the present application is shown. Figure 6 Can be Figure 3 Another partial structural schematic diagram of the welding device 1 is shown, wherein: Figure 6 Not shown Figure 3 The welding device 1 shown includes a welding component 11 and a measuring component 12 . Figure 7 A partial structural schematic diagram of the pressure plate assembly 30 of an embodiment of the present application is shown, for example, Figure 7 for Figure 6 A schematic top view of a local structure of the pressing plate assembly 2 is shown; Figure 8 The schematic diagram of the structure of the pressing plate 31 in the embodiment of the present application is shown, for example, Figure 8 Can be Figure 6 and Figure 7 The shown pressing plate assembly 2 includes a pressing plate 31 which is a schematic structural diagram.

[0092] like Figures 6 to 8 As shown, the embodiment of the present application takes each through hole 311 corresponding to a sub-welding area 120 as an example, 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 pressing plate 31. For example, the control component 32 can control the pressing 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 thereto.

[0093] It should be understood that the shape and size of the through hole 311 of the embodiment of the present application can be set according to the actual application. For example, the cross-sectional shape of the through hole 311 can be circular or rectangular for easy processing. For another example, the shape of the through hole 311 can correspond to the welding nozzle located between the pressing 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 weld the component 2 to be welded through the through hole 311 and the welding nozzle.

[0094] In some embodiments, the pressure plate assembly 30 further includes: a dust collecting component 33, which is used to collect dust generated by welding the plurality of welding areas 110, so as to reduce the influence of dust and other impurities generated during welding on the welding process, thereby improving welding efficiency and welding strength. Figures 6 to 8 As shown, the dust suction component 33 may include a dust suction pipeline, which can be connected to a welding nozzle. The welding nozzle can 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, the dust generated at the welding nozzle can be quickly absorbed and uniformly collected through the dust suction pipeline, thereby reducing the impact of dust on the welding process.

[0095] In some embodiments, Figures 6 to 8 As shown, the pressure plate 31 may further include a mounting structure 312 , which may be used to mount and fix the dust suction component 33 . For example, the mounting structure 312 may include a mounting hole, which may be used to mount and fix a partial structure of the dust suction pipeline of the dust suction component 33 .

[0096] 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.

[0097] In some embodiments, Figures 6 to 8 As shown, the pressure plate 31 may also include a blocking structure 313, which may be located between the plurality of through holes 311 to reduce the influence between the plurality of sub-welding areas 120, and may also reduce the influence 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 the interference of the laser signal; for another example, when the welding component 11 uses a laser welding technology for welding, the blocking structure 313 may also be used to block the interference of the laser signal, but the embodiments of the present application are not limited thereto.

[0098] In the embodiment of the present application, the welding device 1 further includes: a bracket 40, and the bracket 40 is used to fix the assembly to be welded 2. Figures 6 to 8 As shown, the bracket 40 can be used to fix the component to be welded 2 to reduce the misalignment of the component to be welded 2 during the welding process; after the 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 install the pressure plate assembly 30, and the pressure plate assembly 30 can be moved relative to the bracket 40 to position multiple welding areas 110 of the component to be welded 2.

[0099] It should be understood that the assembly 2 to be welded in the embodiment of the present application may include any component to be welded. For example, Fig. 9 A schematic structural diagram of multiple battery cells 21 according to an embodiment of the present application is shown.

[0100] 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 be electrically connected to the electrode terminals 211 of the plurality of battery cells 21, and the plurality of welding regions 110 include welding regions between the busbar 22 and the electrode terminals 211. Specifically, the busbar 22 can realize electrical connection between the plurality of battery cells 21 by connecting the electrode terminals 211 of the battery cells 21. Further, the busbar 22 can be fixed to the electrode terminals 211 of the battery cells 21 by welding, and the busbar 22 can be welded to the plurality of electrode terminals 211 by 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.

[0101] 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.

[0102] 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. 9 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.

[0103] 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.

[0104] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using batteries.

[0105] 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.

[0106] 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 of the plurality of welding regions 110 includes a welding region between the electrode terminal 211 of at least one battery cell 21 and the current collecting component 22. Fig. 9 As shown, for multiple battery cells 21 arranged along the first direction X, each battery cell 21 may include multiple electrode terminals 211. For example, here, it is taken as an example that each battery cell 21 includes two electrode terminals 211 located on the same wall; each welding area 110 may include a welding area between one or more electrode terminals 211 of the battery cells 21 and the busbar component 22, that is, the electrode terminal 211 of the same battery cell 21 corresponds to the same welding area 110, then the multiple electrode terminals 211 included in the same battery cell 21 and the corresponding busbar component 22 can be welded simultaneously by the welding component 11, which can improve the welding efficiency and speed up the welding efficiency between the multiple battery cells 21 and the busbar component 22.

[0107] For example, Fig. 9 As shown, 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.

[0108] The welding device 1 of the embodiment of the present application is described in detail above in conjunction with the accompanying drawings. The welding method of the embodiment of the present application will be described below. For the parts not described in detail, reference can be made to the aforementioned embodiments.

[0109] Fig.10 FIG. 5 is a schematic flow chart of a welding method 500 according to an embodiment of the present application, and the method 500 can be implemented by a welding device 1. Fig.10 As shown, the method 500 may include: S510, welding a first welding area of ​​a component 2 to be welded by a welding component 11 at a first welding position, wherein the component 2 to be welded includes a plurality of welding areas 110; S520, measuring a second welding position corresponding to a second welding area of ​​the component 2 to be welded by a measuring component 12 when the welding component 11 welds the first welding area, wherein the second welding area is adjacent to the first welding area; S530, moving the welding component 11 from the first welding position to the second welding position, and welding the second welding area at the second welding position.

[0110] In some embodiments, the welding component 11 and the measuring component 12 move synchronously.

[0111] 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 2 to be welded.

[0112] In some embodiments, each welding area 110 of the multiple welding areas 110 includes multiple sub-welding areas 120; at the first welding position, the first welding area is welded by the welding component 11, 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.

[0113] 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 means of a pressure plate assembly 30 , wherein the pressure plate assembly 30 is located on a side of the component to be welded 2 facing the welding component 11 and the measuring component 12 .

[0114] 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 , and the plurality of welding regions 110 include welding regions between the busbar 22 and the electrode terminals 211 .

[0115] 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 of the plurality of welding regions 110 includes a welding region between an electrode terminal 211 of at least one battery cell 21 and the busbar component 22.

[0116] 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 one by one here.

[0117] Therefore, for the welding equipment 1 and the 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, so that 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; by analogy, 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 as to facilitate the welding component 11 to continue to move and weld, until the welding equipment 1 completes the measurement and welding of multiple welding areas 110 in sequence.

[0118] 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.

[0119] 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 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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