Welding equipment and battery production system

Abstract

The utility model provides welding equipment and a battery production system.The welding equipment comprises a rack, an air suction device and a welding head, the rack comprises a pressing plate, the pressing plate is provided with a welding channel, the welding channel penetrates through the pressing plate in the thickness direction of the pressing plate, and the welding channel is arranged to extend in the arrangement direction of a plurality of confluence components in a battery device; the welding channel is used for being communicated with the welding positions of the multiple confluence components. The welding channel extends along the arrangement direction of the plurality of confluence components in the battery device, so that the plurality of confluence components are communicated by the same welding channel, and no blocking structure exists between two adjacent confluence components; according to the welding device, the welding head can move in the same welding channel to achieve continuous welding of the multiple confluence components when the multiple confluence components are welded, interruption of the welding process is reduced, the welding efficiency of the multiple confluence components is improved, and the production efficiency of the battery device can be improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a welding device and a battery manufacturing system. Background Technology

[0002] Battery devices have advantages such as high specific energy and high power density, and are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships and power tools.

[0003] Welding is a common connection method in battery manufacturing, enabling the secure connection of different components. It is frequently used in the production of battery devices, and improving welding efficiency is crucial for enhancing the overall production efficiency of battery devices. Therefore, how to improve the production efficiency of battery devices is increasingly attracting the attention of those skilled in the art. Utility Model Content

[0004] In view of the above problems, this application provides a welding equipment and a battery production system. The welding equipment can improve the welding efficiency of the busbar component, which is beneficial to improving the production efficiency of the battery device.

[0005] In a first aspect, some embodiments of this application provide a welding apparatus, which includes a frame, an air intake device, and a welding head. The frame includes a pressure plate, and the pressure plate is provided with a welding channel. The welding channel extends through the pressure plate along its thickness direction and is configured to extend along the arrangement direction of multiple busbar components in a battery device. The welding channel is used to communicate with the welding points of the multiple busbar components. The pressure plate is provided with a first air intake port, and the air intake device is connected to the first air intake port. The first air intake port is connected to the welding channel, and the air intake device is configured to draw air from the welding channel through the first air intake port. The welding head welds the busbar components through the welding channel.

[0006] In the above structure, the welding channel on the pressure plate extends through the pressure plate along its thickness direction and connects to the welding points of multiple busbar components. The welding head can weld the welding points of the busbar components through the welding channel. Because the welding channel extends along the arrangement direction of the multiple busbar components in the battery device, multiple busbar components are connected by the same welding channel, and there are no obstructions between adjacent busbar components. This allows the welding head to continuously weld multiple busbar components by moving within the same welding channel, reducing interruptions in the welding process, improving the welding efficiency of multiple busbar components, and ultimately increasing the production efficiency of the battery device.

[0007] According to some embodiments of the present application, the welding equipment also includes a support structure located on the side of the pressure plate facing the busbar component and connected to the pressure plate. The support structure is used to support the busbar component so that the busbar component can be pressed tightly against the electrode terminals of the battery cell.

[0008] According to some embodiments of the present application, the welding equipment provided has a support structure configured as an elastic insulating structure. When the support structure supports multiple current-carrying components arranged in a row, it can not only use its own elasticity to accommodate the height differences of different current-carrying components and firmly support multiple current-carrying components, but also insulate the current-carrying components from the welding equipment, thus isolating the welding equipment from the battery cell.

[0009] According to some embodiments of the present application, the softening temperature of the supporting structure is set to A, where A≥200℃, so that the high temperature generated during welding does not easily affect the structural performance of the supporting structure.

[0010] According to some embodiments of the welding equipment provided in this application, the frame further includes a baffle structure located on the side of the pressure plate facing the busbar component and connected to the pressure plate. A retaining structure is connected to the baffle structure, and at least part of the retaining structure is located on the side of the baffle structure away from the pressure plate, so that when the frame approaches the busbar component, the retaining structure can contact the busbar component before the baffle structure, reducing the possibility of contact between the baffle structure and the busbar component. The retaining structure isolates the baffle structure from the conduction between the battery cell.

[0011] According to some embodiments of the present application, the welding equipment provided has a supporting structure located on the side of the baffle structure away from the welding point of the busbar component, so that the baffle structure can block spatter between the supporting structure and the welding point of the busbar component, thereby enabling the baffle structure to provide protection against welding spatter and heat insulation, which is beneficial to extending the service life of the supporting structure.

[0012] According to some embodiments of the welding equipment provided in this application, two baffle structures are provided, which are arranged opposite to each other in a first direction perpendicular to the extension direction of the welding channel. The frame also includes two enclosure structures arranged opposite to each other in the extension direction of the welding channel. The enclosure structures are connected to the baffle structures to form a welding cavity that connects the welding channel and the welding joint of the confluence component. The baffle structures and enclosure structures forming the welding cavity can effectively block the fumes and spatter generated during welding, allowing the fumes and spatter to be better sucked away by the suction device, which is beneficial to improving the welding quality.

[0013] According to some embodiments of the welding equipment provided in this application, the pressure plate is provided with a first channel, and a first air intake is connected to the air intake device through the first channel. The baffle structure forms a second channel with a second air intake, which is connected to the welding channel. The second air intake is connected to the first channel through the second channel. This not only allows the air intake device to also draw air from the welding chamber through the second air intake, which is beneficial to improving the discharge effect of fumes and spatter, but also allows the air intake of the first air intake and the second air intake to be controlled synchronously, which is beneficial to reducing the difficulty of control.

[0014] According to some embodiments of the present application, the welding equipment includes a suction device comprising a manifold connected to a pressure plate and a negative pressure device, wherein the inner cavity of the manifold connects a first channel to the negative pressure device.

[0015] According to some embodiments of the welding equipment provided in this application, a first suction port is provided on both sides of the welding channel in a first direction, and the first direction is perpendicular to the extension direction of the welding channel. By providing a first suction port on both sides of the welding channel in the first direction, the fumes and spatter generated during welding can be drawn in by the first suction ports on both sides of the first direction, which is beneficial to further improve the discharge effect of fumes and spatter.

[0016] According to some embodiments of the present application, the welding equipment provided has multiple first suction ports, which are spaced apart along the arrangement direction of multiple confluence components.

[0017] According to some embodiments of this application, the welding equipment includes a welding head comprising a wire feeding mechanism and a laser module. The wire feeding mechanism is used to feed brazing wire to the welding area, and the laser module is used to emit a laser to the welding area. The laser can melt and fill the brazing wire at the connection between the busbar and the electrode terminal. After the brazing wire solidifies, the connection between the busbar and the electrode terminal is achieved.

[0018] Secondly, some embodiments of this application provide a battery production system, which includes welding equipment provided by any of the above-described technical solutions. The welding equipment is used to weld the busbar component to the electrode terminals of the battery cell.

[0019] The technical solutions provided by the embodiments of this disclosure bring at least the following beneficial effects:

[0020] Some embodiments of this application provide a welding apparatus, which includes a frame, an air intake device, and a welding head. The frame includes a pressure plate with a welding channel extending through it along its thickness direction. The welding channel is configured to extend along the arrangement direction of multiple current-collecting components in a battery device and is used to communicate with the welding points of the multiple current-collecting components. The pressure plate has a first air intake port, which is connected to the air intake device and the welding channel. The air intake device is configured to draw air from the welding channel through the first air intake port. The welding head welds the current-collecting components through the welding channel.

[0021] In the above structure, the welding channel on the pressure plate extends through the pressure plate along its thickness direction and connects to the welding points of multiple busbar components. The welding head can weld the welding points of the busbar components through the welding channel. Because the welding channel extends along the arrangement direction of the multiple busbar components in the battery device, multiple busbar components are connected by the same welding channel, and there are no obstructions between adjacent busbar components. This allows the welding head to continuously weld multiple busbar components by moving within the same welding channel, reducing interruptions in the welding process, improving the welding efficiency of multiple busbar components, and ultimately increasing the production efficiency of the battery device. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 This is a schematic diagram of the welding equipment provided in some embodiments of this application from one perspective;

[0024] Figure 2 This is a schematic diagram of the welding equipment provided in some embodiments of this application from another perspective;

[0025] Figure 3 This is a partial cross-sectional view of a welding apparatus provided in some embodiments of this application.

[0026] In the diagram;

[0027] 1. Frame; 11. Pressure plate; 111. Welding channel; 112. First suction port; 113. First channel; 12. Supporting structure; 13. Baffle structure; 131. Second suction port; 132. Second channel; 14. Enclosure structure; 15. Welding cavity; 2. Suction device; 21. Manifold; 10. Manifold component; 20. Electrode terminal; X, First direction. Detailed Implementation

[0028] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0029] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0030] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0032] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0033] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in individual battery cells such as energy storage containers or energy storage cabinets. As the application fields of battery devices continue to expand, the demand for battery devices is constantly increasing.

[0035] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0036] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0037] A battery cell can be a rechargeable battery cell, which refers to a battery cell that can be recharged after being discharged to activate the active materials and continue to be used.

[0038] Battery cells can be lithium-ion cells, sodium-ion cells, sodium-lithium-ion cells, lithium metal cells, sodium metal cells, lithium-sulfur cells, magnesium-ion cells, nickel-metal hydride cells, nickel-cadmium cells, lead-acid cells, etc.

[0039] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0040] In some embodiments, the battery device may include one or more battery packs, which may include one or more individual battery cells. As an example, a battery pack includes a housing and one or more individual battery cells, which are housed within the housing, for example, by a fixed arrangement. As yet another example, the battery device may include multiple battery packs, which may be connected in series, parallel, or in a mixed configuration.

[0041] In the production process of battery devices, welding is a crucial connection and sealing process. For example, when multiple battery cells are connected in series, parallel, or mixed configurations via a busbar assembly to form a battery cell module, the busbar assembly is welded to the electrode terminals of the battery cells. Laser brazing is commonly used to connect the busbar assembly and the electrode terminals of the battery cells due to its advantages such as strong penetration, low overall heat input, small heat-affected zone, minimal softening, and minimal deformation.

[0042] Because battery cells in a battery pack are typically stacked in multiple layers, welding the busbar and the electrode terminals of the cells requires welding at multiple points. In some cases, to ensure a tight fit between the busbar and the electrode terminals, a pressure plate is used to press the busbar and electrode terminals together. Currently, to provide a welding channel, a common approach is to create multiple spaced through holes in the pressure plate, each corresponding to a specific part of the busbar. The welding equipment then sequentially welds the connection between the busbar and the electrode terminals using these through holes. However, this approach suffers from reduced welding efficiency because the welding equipment needs to move sequentially between the through holes.

[0043] To improve the welding efficiency of busbar components and the production efficiency of battery devices, some embodiments of this application provide a welding device. This welding device includes a frame, a suction device, and a welding head. The frame includes a pressure plate with a welding channel extending through it along its thickness direction. The welding channel is configured to extend along the arrangement direction of multiple busbar components in the battery device and communicates with the welding points of the multiple busbar components. The pressure plate has a first suction port, which is connected to the suction device and also to the welding channel. The suction device is configured to draw air from the welding channel through the first suction port. The welding head welds the busbar components through the welding channel. In this structure, the welding channel on the pressure plate extends through it along its thickness direction and communicates with the welding points of the multiple busbar components, allowing the welding head to weld the welding points of the busbar components through the welding channel. Because the welding channel extends along the arrangement direction of multiple busbar components in the battery device, multiple busbar components are connected by the same welding channel, and there is no obstruction structure between two adjacent busbar components. This allows the welding head to move within the same welding channel to weld multiple busbar components, reducing interruptions in the welding process, improving welding continuity, and increasing the welding efficiency of multiple busbar components, which is beneficial to improving the production efficiency of the battery device.

[0044] The welding equipment described in this application can continuously weld multiple joints during the welding process, which helps to improve welding efficiency. This welding equipment can be used, but is not limited to, in the production of battery devices, and can also be used in the production of vehicles, aircraft, ships, electronic equipment, power tools, and other products, thereby improving welding efficiency.

[0045] Some embodiments of this application provide a welding apparatus, see reference Figure 1 and Figure 2 The welding equipment includes a frame 1, an air intake device 2, and a welding head (not shown in the figure). The frame 1 includes a pressure plate 11, which is provided with a welding channel 111. The welding channel 111 extends through the pressure plate 11 along its thickness direction and is configured to extend along the arrangement direction of multiple current-collecting components 10 in the battery device. The welding channel 111 is used to communicate with the welding points of the multiple current-collecting components 10. The pressure plate 11 is provided with a first air intake port 112, which is connected to the first air intake port 112. The first air intake port 112 is connected to the welding channel 111, and the air intake device 2 is configured to draw air from the welding channel 111 through the first air intake port 112. The welding head welds the current-collecting components 10 through the welding channel 111.

[0046] Since multiple battery cells in the battery device are stacked, the busbar 10 for connecting the multiple battery cells is arranged in a row along the arrangement direction of the multiple battery cells.

[0047] The frame 1 can be a frame structure in the welding equipment used to hold and press the busbar component 10 to be welded. Exemplarily, the welding equipment also includes a hydraulic cylinder (not shown in the figure), and the frame 1 is connected to the output end of the hydraulic cylinder. It can move towards or away from the busbar component 10 under the drive of the hydraulic cylinder, so that the frame 1 can press the busbar component 10 against the electrode terminals 20 of the battery cell. (Refer to...) Figure 2 .

[0048] The pressure plate 11 can be a plate-shaped component in the frame 1, which is used to hold and press the entire row of the manifold components 10 arranged in a row, so as to achieve the holding of multiple manifold components 10.

[0049] The welding channel 111 can be a channel provided on the pressure plate 11 for welding head to weld at the welding position. When the pressure plate 11 presses against the manifold 10, it can serve as a channel for the welding head to extend into. The welding channel 111 penetrates the pressure plate 11 along the thickness direction, which means that the welding channel 111 penetrates the pressure plate 11 and forms a through hole structure in the pressure plate 11 along the thickness direction, so that when the welding head extends into the welding channel 111, it can directly reach the manifold 10.

[0050] By configuring the welding channel 111 to extend along the arrangement direction of the multiple busbar components 10 in the battery device, the welding channel 111 can connect the multiple sequentially arranged busbar components 10, so that the welding points of the multiple sequentially arranged busbar components 10 are connected to the same welding channel 111. When the welding head is inserted into the welding channel 111, it can move in the welding channel 111 to achieve correspondence with the welding points of different busbar components 10, reducing the interruption of the welding process, which is beneficial to improving the continuity of welding multiple busbar components 10, thereby improving the welding efficiency of multiple busbar components 10.

[0051] The suction device 2 can be configured to be used for suction. The first suction port 112 can be an opening structure provided on the pressure plate 11, which communicates with the welding channel 111. By communicating the suction device 2 with the first suction port 112, the suction device 2 can draw air from the welding channel 111 through the first suction port 112, so that the suction device 2 can promptly remove the fumes and spatter generated during welding, which helps to improve the surface flatness of the weld, thereby improving the welding quality and reducing the contact resistance at the joint.

[0052] The welding head can be a device used to weld the busbar component 10 and the electrode terminals 20 of the battery cell. It melts the material, and after the material solidifies, it connects the busbar component 10 and the electrode terminals 20. In one example, the welding head can be a laser welding head, which emits a laser to melt the material at the connection point of the busbar component 10 and the electrode terminals 20 together, achieving the connection after the material solidifies. In another example, the welding head can be a laser brazing head, which not only emits a laser but also delivers brazing filler metal. The laser melts and fills the brazing filler metal at the connection point of the busbar component 10 and the electrode terminals 20, achieving the connection after the brazing filler metal solidifies.

[0053] In the above structure, the welding channel 111 on the pressure plate 11 extends through the pressure plate 11 along its thickness direction and connects with the welding points of multiple busbar components 10. The welding head can weld the welding points of the busbar components 10 through the welding channel 111. Since the welding channel 111 extends along the arrangement direction of the multiple busbar components 10 in the battery device, the multiple busbar components 10 are connected by the same welding channel 111, and there is no obstruction structure between adjacent busbar components 10. This allows the welding head to move within the same welding channel 111 to weld the multiple busbar components 10, reducing interruptions in the welding process, improving welding continuity, and increasing the welding efficiency of the multiple busbar components 10, which is beneficial to improving the production efficiency of the battery device.

[0054] In some embodiments, reference Figure 3 The frame 1 also includes a support structure 12, which is located on the side of the pressure plate 11 facing the busbar component 10 and connected to the pressure plate 11. The support structure 12 is used to support the busbar component 10.

[0055] The supporting structure 12 can be a structure provided on the frame 1 for direct contact with the current collector 10. It supports the current collector 10 by directly contacting it, so that the current collector 10 can be pressed tightly against the electrode terminal 20 of the battery cell. The supporting structure 12 supports all the current collectors 10 arranged in a row.

[0056] The abutment structure 12 is located on the side of the pressure plate 11 facing the manifold 10 and is connected to the pressure plate 11. This means that the abutment structure 12 is disposed on the side of the pressure plate 11 near the manifold 10 and is connected to the surface of the pressure plate 11 facing the manifold 10, so that the abutment structure 12 protrudes from the surface of the pressure plate 11 facing the manifold 10 toward the manifold 10, so that when the pressure plate 11 is close to the manifold 10, the abutment structure 12 can abut against the manifold 10 and press against the manifold 10.

[0057] In some embodiments, the supporting structure 12 is configured as a resilient insulating structure.

[0058] The supporting structure 12 is configured as an elastic insulating structure, which means that the supporting structure 12 is made of elastic insulating material. When the supporting structure 12 supports multiple current collectors 10 arranged in a row, it can not only use its own elasticity to accommodate the height differences of different current collectors 10 and firmly support multiple current collectors 10, but also insulate the current collectors 10 from the welding equipment and isolate the welding equipment from the battery cell.

[0059] In some embodiments, the rebound recovery speed of the supporting structure 12 is less than or equal to 5s, thereby giving the supporting structure 12 good elasticity. Exemplarily, the rebound recovery speed of the supporting structure 12 can be obtained by measurement according to the national standard GB / T 7759-2015. The specific measurement method can be referred to the national standard GB / T 7759-2015, and will not be elaborated here.

[0060] For example, the supporting structure 12 can be configured as a silicone structure.

[0061] In some embodiments, the softening temperature of the supporting structure 12 is set to A, where A ≥ 200°C.

[0062] The softening temperature can be referred to as the critical temperature at which the supporting structure 12 begins to undergo significant plastic softening and lose rigidity during the heating process. By setting the range of the softening temperature A of the supporting structure 12 to A≥200℃, the supporting structure 12 has good high-temperature resistance, making it less likely that the high temperature generated during welding will affect the structural performance of the supporting structure 12.

[0063] For example, the softening temperature A of the supporting structure 12 can be set to 200°C, 220°C or 250°C.

[0064] In some embodiments, the frame 1 further includes a baffle structure 13, which is located on the side of the pressure plate 11 facing the junction member 10 and connected to the pressure plate 11. A retaining structure 12 is connected to the baffle structure 13, and at least part of the retaining structure 12 is located on the side of the baffle structure 13 away from the pressure plate 11.

[0065] The baffle structure 13 can be a structure used to block welding spatter. The baffle structure 13 is located on the side of the pressure plate 11 facing the manifold 10 and is connected to the pressure plate 11. Specifically, the baffle structure 13 is disposed on the side of the pressure plate 11 facing the manifold 10, and the baffle structure 13 is connected to the surface of the pressure plate 11 facing the manifold 10. By positioning the baffle structure 13 on the side of the pressure plate 11 facing the manifold 10 and connecting it to the pressure plate 11, the baffle structure 13 can prevent welding spatter from spreading outwards, thus reducing the impact of welding on the surrounding environment.

[0066] The abutment structure 12 is connected to the baffle structure 13. At least a portion of the abutment structure 12 is located on the side of the baffle structure 13 away from the pressure plate 11. This means that the abutment structure 12 is connected to the baffle structure 13, and at least a portion of the abutment structure 12 extends out of the baffle structure 13 on the side away from the pressure plate 11. At least a portion of the abutment structure 12 is closer to the busbar component 10 than the baffle structure 13, so that when the frame 1 approaches the busbar component 10, the abutment structure 12 can contact the busbar component 10 before the baffle structure 13, reducing the possibility of the baffle structure 13 contacting the busbar component 10. The abutment structure 12 isolates the baffle structure 13 from the battery cell.

[0067] For example, a portion of the supporting structure 12 may extend from the side of the baffle structure 13 away from the pressure plate 11, while another portion of the supporting structure 12 may not extend from the side of the baffle structure 13 away from the pressure plate 11; alternatively, the supporting structure 12 may be connected to the end face of the baffle structure 13 away from the pressure plate 11, with the entire supporting structure 12 located on the side of the baffle structure 13 away from the pressure plate 11.

[0068] In some embodiments, the abutment structure 12 is located on the side of the baffle structure 13 away from the weld of the busbar component 10.

[0069] The supporting structure 12 is located on the side of the baffle structure 13 away from the weld of the busbar component 10. This means that the supporting structure 12 is further away from the weld of the busbar component 10 than the baffle structure 13, so that the baffle structure 13 can block the spatter between the supporting structure 12 and the weld of the busbar component 10. This allows the baffle structure 13 to provide protection against welding spatter and heat insulation, which helps to extend the service life of the supporting structure 12.

[0070] In some embodiments, continue to refer to Figure 3Two baffle structures 13 are provided, and the two baffle structures 13 are arranged opposite each other in the first direction X, which is perpendicular to the extension direction of the welding channel 111. The frame 1 also includes two enclosure structures 14 arranged opposite each other in the extension direction of the welding channel 111. The enclosure structures 14 are connected to the baffle structures 13 to form a welding cavity 15 that connects the welding channel 111 and the welding joint of the confluence component 10.

[0071] The first direction X is perpendicular to the extension direction of the welding channel 111. Two baffle structures 13 are spaced apart in the first direction X, and two surrounding plate structures 14 are spaced apart in the extension direction of the welding channel 111, forming a welding cavity 15. The welding cavity 15 connects the welding channel 111 and the welding joint of the confluence component 10, allowing the welding head extending from the welding channel 111 to pass through the welding cavity 15 for welding. The baffle structures 13 and surrounding plate structures 14 forming the welding cavity 15 effectively block welding fumes and spatter, allowing them to be better sucked away by the suction device 2, thus improving welding quality.

[0072] In some embodiments, the pressure plate 11 is provided with a first channel 113, and the first air intake 112 is connected to the air intake device 2 through the first channel 113. The baffle structure 13 forms a second channel 132 with a second air intake 131. The second air intake 131 is connected to the welding channel 111, and the second air intake 131 is connected to the first channel 113 through the second channel 132.

[0073] The first channel 113 can be a channel structure provided in the pressure plate 11. The first channel 113 connects the first air intake 112 and the air intake device 2, so that the air intake device 2 can smoothly discharge smoke and dust and splashes through the first air intake 112 and the first channel 113 in sequence.

[0074] The baffle structure 13 forms a second channel 132 with a second air intake 131. This means that the baffle structure 13 has a second channel 132, and the second channel 132 is connected to the welding channel 111 through the second air intake 131. The second air intake 131 is connected to the first channel 113 through the second channel 132. This means that the second channel 132 connects the second air intake 131 to the first channel 113, allowing the suction device 2 to also draw air from the welding chamber 15 through the second air intake 131, which improves the removal of fumes and spatter. It also allows the suction of the first air intake 112 and the second air intake 131 to be controlled synchronously, reducing control difficulty.

[0075] For example, the second air intake 131 is further away from the pressure plate 11 than the first air intake 112, so that the second air intake 131 is closer to the welding point of the manifold 10 than the first air intake 112, so that the second air intake 131 can better discharge smoke and spatter from the welding chamber 15.

[0076] In some embodiments, the suction device 2 includes a manifold 21 connected to the pressure plate 11 and a negative pressure device (not shown in the figure), the inner cavity of the manifold 21 communicating the first channel 113 with the negative pressure device.

[0077] The negative pressure device can be a device in the suction device 2 used to create negative pressure. The manifold 21 can be a pipe in the suction device 2, which is used to connect the negative pressure device and the first channel 113. The suction device 2 connects the first channel 113 and the negative pressure device through the inner cavity of the manifold 21, so that the suction device 2 can suck up the fumes and spatter generated during welding.

[0078] For example, the negative pressure device can be an exhaust fan, which allows smoke and splashes to be smoothly discharged under the action of the negative pressure device.

[0079] In some embodiments, the welding channel 111 is provided with a first air intake 112 on both sides of the first direction X, and the first direction X is perpendicular to the extension direction of the welding channel 111.

[0080] As described in the aforementioned technical solution, the first direction X is perpendicular to the extension direction of the welding channel 111. By providing first air intakes 112 on both sides of the welding channel 111 in the first direction X, the fumes and spatter generated during welding can be drawn in by the first air intakes 112 on both sides of the first direction X, which helps to further improve the discharge effect of fumes and spatter.

[0081] In some embodiments, a plurality of first air intake ports 112 are provided, and the plurality of first air intake ports 112 are spaced apart along the arrangement direction of the plurality of confluence components 10.

[0082] By arranging multiple first air intakes 112 at intervals along the arrangement direction of multiple manifold components 10, the multiple first air intakes 112 can effectively remove fumes and spatter from the welding chamber 15. For example, the multiple first air intakes 112 can be arranged one-to-one with the multiple manifold components 10, so that the fumes and spatter generated when each manifold component 10 is welded can be quickly removed.

[0083] For example, there are multiple second air inlets 131, and the number of second air inlets 131 is equal to the number of first air inlets 112. The second air inlets 131 and the first air inlets 112 are configured in a one-to-one correspondence.

[0084] In some embodiments, the welding head includes a wire feeding mechanism and a laser module. The wire feeding mechanism is used to feed brazing wire to the welding area, and the laser module is used to emit a laser to the welding area.

[0085] The wire feeding mechanism can be a mechanism in the welding head used to feed the brazing wire to the welding point of the busbar 10. The laser module can be a module in the welding head used to emit a laser to melt the brazing wire at the welding point of the busbar 10.

[0086] The welding head includes a wire feeding mechanism and a laser module. It can be a laser brazing head, which can not only emit laser light but also deliver brazing filler metal. The laser can melt and fill the brazing filler metal at the connection between the busbar component 10 and the electrode terminal 20. After the brazing filler metal solidifies, the connection between the busbar component 10 and the electrode terminal 20 is achieved.

[0087] Some embodiments of this application also provide a battery production system, which includes the welding equipment provided by any of the above technical solutions. The welding equipment is used to weld the busbar 10 to the electrode terminals 20 of the battery cell.

[0088] The welding equipment in this battery production system welds the busbar 10 to the electrode terminals 20 of the battery cell, which not only firmly connects the busbar 10 to the electrode terminals 20 of the battery cell, but also reduces the resistance at the connection point between the busbar 10 and the electrode terminals 20 of the battery cell.

[0089] Some embodiments of this application provide a welding apparatus for welding a busbar component 10 to the electrode terminals 20 of a battery cell. The welding apparatus includes a frame 1, a suction device 2, and a welding head. The frame 1 includes a pressure plate 11, baffle structures 13, surrounding plate structures 14, and a supporting structure 12. The pressure plate 11 is provided with a welding channel 111 that extends through the pressure plate 11 along its thickness direction. The welding channel 111 is configured to extend along the arrangement direction of multiple busbar components 10 in the battery device and communicates with the welding points of the multiple busbar components 10. Two baffle structures 13 and two surrounding plate structures 14 are connected to the side of the pressure plate 11 facing the busbar component 10 to form a welding cavity 15 that communicates the welding channel 111 and the welding points of the busbar component 10. The supporting structure 12 is connected to the side of the pressure plate 11 facing the busbar component 10 to support the busbar component 10. The pressure plate 11 is provided with a first air intake 112. The negative pressure device of the air intake device 2 is connected to the first air intake 112 through the manifold 21. The first air intake 112 is connected to the welding channel 111, so that the fumes and spatter generated during welding can be sucked away.

[0090] In the above structure, the welding channel 111 on the pressure plate 11 extends through the pressure plate 11 along its thickness direction and connects with the welding joints of multiple busbar components 10. The welding head can weld the welding joints of the busbar components 10 through the welding channel 111. Since the welding channel 111 extends along the arrangement direction of the multiple busbar components 10 in the battery device, the multiple busbar components 10 are connected by the same welding channel 111, and there is no obstruction structure between adjacent busbar components 10. This allows the welding head to continuously weld the multiple busbar components 10 by moving within the same welding channel 111, reducing interruptions in the welding process, improving the welding efficiency of the multiple busbar components 10, and thus improving the production efficiency of the battery device.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A welding apparatus characterized by comprising: The rack comprises a pressing plate provided with a welding channel penetrating through the pressing plate along the thickness direction of the pressing plate, the welding channel being configured to extend along the arrangement direction of a plurality of busbar components in a battery device and communicate with the welding positions of the plurality of busbar components; The pressing plate is provided with a first suction port, and a suction device communicates with the first suction port, the first suction port communicating with the welding channel, and the suction device being configured to suck air from the welding channel through the first suction port; The rack further comprises an abutting structure located on the side of the pressing plate facing the busbar components and connected with the pressing plate, the abutting structure being used to abut the busbar components. The abutting structure is configured as an elastic insulation structure.

2. The welding apparatus of claim 1, wherein, The softening temperature of the abutting structure is set to A, A≥200℃.

3. The welding apparatus of claim 2, wherein, The rack further comprises a baffle structure located on the side of the pressing plate facing the busbar components and connected with the pressing plate, the abutting structure being connected with the baffle structure, and at least part of the abutting structure being located on the side of the baffle structure away from the pressing plate.

4. The welding apparatus of claim 2, wherein, The abutting structure is located on the side of the baffle structure away from the welding positions of the busbar components.

5. The welding apparatus of claim 2, wherein, The baffle structure is provided with two baffle structures oppositely arranged in a first direction, the first direction being perpendicular to the extension direction of the welding channel, and the rack further comprises two surrounding plate structures oppositely arranged in the extension direction of the welding channel, the surrounding plate structures being connected with the baffle structures to form a welding cavity communicating the welding channel and the welding positions of the busbar components.

6. The welding apparatus of claim 5, wherein, The pressing plate is provided with a first channel, the first suction port communicating with the suction device through the first channel, and the baffle structure forming a second channel with a second suction port, the second suction port communicating with the welding channel, and the second suction port communicating with the first channel through the second channel.

7. The welding apparatus of claim 5, wherein, The suction device comprises a busbar pipeline connected with the pressing plate and a negative pressure device, the inner cavity of the busbar pipeline communicating the first channel with the negative pressure device.

8. The welding apparatus of claim 5, wherein, The welding channel is provided with the first suction port on both sides in a first direction, the first direction being perpendicular to the extension direction of the welding channel.

9. The welding apparatus of claim 8, wherein, The first suction port is provided with a plurality of first suction ports arranged at intervals along the arrangement direction of the plurality of busbar components.

10. The welding apparatus of claim 1, wherein, The welding head comprises a wire feeding mechanism for feeding solder wire to the welding position and a laser module for emitting laser to the welding position.

11. The welding apparatus of claim 1, wherein, The welding device is used to weld the busbar components with the electrode terminals of battery cells.

12. The welding apparatus of claim 1, wherein, ​ 13. A battery production system characterized by comprising: ​

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