Welding device and battery manufacturing apparatus

Abstract

This application provides a welding apparatus and battery manufacturing equipment. The welding apparatus includes a base, an adjustment mechanism, and multiple pressure-applying components. The multiple pressure-applying components are arranged and mounted on the base along a first direction, and are used to press against the parts to be welded. At least two pressure-applying components are movable relative to each other along the first direction. The adjustment mechanism is used to drive at least two pressure-applying components to move relative to each other along the first direction to adjust the distance between the at least two pressure-applying components along the first direction. The adjustment mechanism in the welding apparatus provided by this application can drive at least two pressure-applying components to move relative to each other along the first direction, thereby adjusting the distance between the at least two pressure-applying components along the first direction according to different distances between at least two parts to be welded along the first direction. This effectively improves the compatibility of the welding apparatus, thereby saving changeover time and improving the production efficiency of the battery assembly.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] In related technologies, welding equipment is typically used to weld multiple parts of a battery device. However, due to differences in size and the varying locations of the welding points for different battery models, welding equipment cannot be universally applied to all models. Therefore, improving the compatibility of welding equipment with different battery models during battery manufacturing is a pressing technical problem that needs to be solved. Utility Model Content

[0004] One of the objectives of this application is to provide a welding apparatus and battery manufacturing equipment, aiming to solve the technical problem of poor compatibility of welding apparatuses in related technologies.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application embodiment is as follows: a welding device is provided, including a base, an adjustment mechanism, and multiple pressure-applying components; the multiple pressure-applying components are arranged and installed on the base along a first direction, and each pressure-applying component has a welding channel that passes through the opposite ends of the pressure-applying components along the downward pressing direction. The pressure-applying components are used to press against the part to be welded, and at least two pressure-applying components can move relative to each other along the first direction; the welding mechanism is used to weld the part to be welded through the welding channel; and the adjustment mechanism is used to drive at least two pressure-applying components to move relative to each other along the first direction to adjust the distance between the at least two pressure-applying components along the first direction.

[0006] The beneficial effects of the welding apparatus provided in this application embodiment are as follows: The adjustment mechanism in the welding apparatus provided in this application embodiment can drive at least two pressure members to move relative to each other along a first direction, so that the spacing of at least two pressure members along the first direction can be adjusted according to the different spacing of at least two parts to be welded along the first direction. For example, the spacing of at least two pressure members along the first direction can be adjusted according to the actual spacing of at least two electrode terminals in different models of battery devices, so that the spacing of at least two pressure members along the first direction can adapt to the actual spacing of at least two electrode terminals in different models of battery devices, effectively improving the compatibility of the welding apparatus, thereby saving the changeover time of the welding apparatus and helping to improve the production efficiency of battery devices.

[0007] In some embodiments of this application, the adjustment mechanism includes a rotating shaft and a driver. The rotating shaft is rotatably mounted on a base, and the driver is used to drive the rotating shaft to rotate. A plurality of spiral grooves are provided on the outer circumferential surface of the rotating shaft. The spiral grooves extend spirally around the central axis of the rotating shaft, and the plurality of spiral grooves slide in one-to-one correspondence with at least a portion of a plurality of pressure-applying components.

[0008] By adopting the above technical solution, during the process of the drive shaft rotating, the sliding cooperation between the spiral groove and the pressure component can be used to drive multiple pressure components to move along the first direction, which effectively simplifies the overall structure of the welding device and makes the overall structure of the welding device more compact.

[0009] In some embodiments of this application, the rotating shaft includes a first shaft segment and a second shaft segment, and the plurality of spiral grooves include at least one first spiral groove formed on the outer peripheral surface of the first shaft segment and at least one second spiral groove formed on the outer peripheral surface of the second shaft segment, wherein the spiral direction of the first spiral groove is opposite to that of the second spiral groove.

[0010] By adopting the above technical solution, during the process of the drive shaft rotating, since the rotation direction of the first spiral groove is opposite to that of the second spiral groove, at least two pressure components can be driven to move relative to each other along the first direction, thereby realizing the adjustment of the distance between at least two pressure components along the first direction. This not only has high adjustment accuracy, but also makes the overall structure of the welding device more compact.

[0011] In some embodiments of this application, the plurality of spiral grooves include a plurality of first spiral grooves and a plurality of second spiral grooves. Along the axial direction of the rotating shaft and toward the direction away from the second shaft segment, the lead of the plurality of first spiral grooves gradually increases, and along the axial direction of the rotating shaft and toward the direction away from the first shaft segment, the lead of the plurality of second spiral grooves gradually increases.

[0012] By adopting the above technical solution, during the process of the drive shaft rotating, the sliding fit between the spiral groove and the pressure component can be used to drive the two adjacent pressure components to move relative to each other along the first direction, thereby realizing the adjustment of the distance between the two adjacent pressure components along the first direction. This not only has high adjustment accuracy, but also further improves the compatibility of the welding device.

[0013] In some embodiments of this application, the rotating shaft has a reference plane perpendicular to a first direction, the reference plane being located between a first shaft segment and a second shaft segment, and a plurality of first helical grooves and a plurality of second helical grooves being symmetrically arranged about the reference plane.

[0014] By adopting the above technical solution, since multiple first spiral grooves and multiple second spiral grooves are symmetrically arranged about the reference plane, that is, a pair of first spiral grooves and second spiral grooves symmetrically arranged about the reference plane have the same lead but opposite rotation direction, correspondingly, the two pressure members slidingly engaged by each pair of first spiral grooves and second spiral grooves have the same moving speed and moving distance. In this way, during the process of the driver driving the rotating shaft to rotate, multiple pressure members can be driven to symmetrically unfold or move closer along the first direction, thereby enabling more precise adjustment of the spacing between at least two pressure members along the first direction, effectively improving the adjustment accuracy of the welding device.

[0015] In some embodiments of this application, the leads of the plurality of first spiral grooves are a first arithmetic sequence, the leads of the plurality of second spiral grooves are a second arithmetic sequence, the common difference of the first arithmetic sequence is d1, the common difference of the second arithmetic sequence is d2, and the lead of the first spiral groove closest to the reference plane among the plurality of first spiral grooves is L, satisfying: d1=d2=2L.

[0016] By adopting the above technical solution, since the leads of the first spiral groove and the second spiral groove are respectively in an arithmetic sequence, the spacing between the multiple pressure-applying components that slide with the first spiral groove can remain equal during the rotation of the driven shaft by the driver. Similarly, the spacing between the multiple pressure-applying components that slide with the second spiral groove can also remain equal during the rotation of the driven shaft by the driver. At the same time, since the tolerance of the arithmetic sequence is equal to 2L, the spacing between the multiple pressure-applying components that slide with the first spiral groove is equal to the spacing between the multiple pressure-applying components that slide with the second spiral groove. This ensures that the spacing between the two adjacent pressure-applying components remains equal during the adjustment of the spacing of each pair of adjacent pressure-applying components along the first direction, effectively improving the adjustment accuracy of the welding device.

[0017] In some embodiments of this application, the pressure-applying member is slidably mounted on the base, and the pressure-applying member has a protrusion, with the protrusions of multiple pressure-applying members being inserted into multiple spiral grooves in a one-to-one correspondence.

[0018] By adopting the above technical solution, not only is the installation stability of the pressure-applying component improved, but the fit stability between the pressure-applying component and the spiral groove is also improved, thereby enabling the pressure-applying component to move stably along the first direction and effectively improving the adjustment accuracy of the welding device.

[0019] In some embodiments of this application, the welding apparatus further includes a dustproof component disposed on the outer side of the port of the welding channel of the plurality of pressure components away from the part to be welded.

[0020] By adopting the above technical solution, on the one hand, the dustproof component can prevent foreign objects from entering the welding channel, thereby improving the welding environment and thus improving the welding effect of the welding device; on the other hand, the dustproof component can also prevent the dust generated during the welding process from spreading outward. For example, the dustproof component can prevent the dust generated during the welding process from spreading into the interior of the battery device, thereby improving the production environment and thus improving the production yield.

[0021] In some embodiments of this application, the dustproof component is a telescopic structural component, which has a first fixed end and a second fixed end. The first fixed end is connected to the first pressure-applying component along the first direction among a plurality of pressure-applying components, and the second fixed end is connected to the last pressure-applying component along the first direction among a plurality of pressure-applying components.

[0022] By adopting the above technical solution, the coverage area of ​​the dustproof component can automatically adapt to the changes in the spacing of multiple pressure-applying components, enabling the dustproof component to maintain coverage of multiple pressure-applying components, thereby maintaining the protective effectiveness of the dustproof component and effectively improving the reliability of the dustproof component.

[0023] In some embodiments of this application, the dustproof component includes a retractable body, a first support member, and a second support member. The first support member is connected to one end of the retractable body to form a first fixed end, and the second support member is connected to the other end of the retractable body to form a second fixed end.

[0024] By adopting the above technical solution, the structural stability and installation stability of the dustproof component are effectively improved while realizing its telescopic function, thereby effectively improving the reliability of the dustproof component.

[0025] In some embodiments of this application, the dustproof component further includes at least one third support member, which is disposed between the first support member and the second support member and connected to the retractable body. The first support member, the second support member, and the third support member are connected to a plurality of pressure-applying members in a one-to-one correspondence.

[0026] By adopting the above technical solutions, the structural stability and installation stability of the dustproof components are further improved, thereby further enhancing the reliability of the dustproof components.

[0027] In some embodiments of this application, the retractable body includes a plurality of folded segments connected in sequence, and a third support member is connected to the junction of two adjacent folded segments.

[0028] By adopting the above technical solution, the structure of the retractable body is simplified and the production cost of the dustproof parts is reduced.

[0029] In some embodiments of this application, the pressure-applying component is also provided with a dust suction port, which is connected to the welding channel and used to connect to an external negative pressure device.

[0030] By adopting the above technical solution, the external negative pressure device can remove dust from the welding channel through the dust suction port, improving the welding environment and thus effectively improving the welding effect of the welding device.

[0031] In some embodiments of this application, the base is provided with a dust suction channel for connecting to an external negative pressure device. The pressure-applying component also includes a dust suction pipe, one end of which is connected to a dust suction port. The ends of multiple dust suction pipes away from their respective dust suction ports are all connected to the dust suction channel.

[0032] By adopting the above technical solution, the external negative pressure device can suck away the dust in multiple welding channels through the dust suction channel, thereby effectively simplifying the dust removal pipeline structure of the welding device and facilitating daily maintenance.

[0033] In some embodiments of this application, the pressure-applying component includes a mounting base, a pressure head, and an elastic connector. The mounting base is slidably mounted on a base, the pressure head is used to press against the part to be welded, and the elastic connector is connected between the mounting base and the pressure head.

[0034] By adopting the above technical solution, the mounting base and the pressure head can be elastically connected, so that the pressure head has a certain buffering and self-adaptive ability when pressing against the part to be welded. For example, multiple pressure components can compensate for the height difference between multiple parts to be welded under elastic action, so that multiple pressure components can provide stable downward pressure to multiple parts to be welded, effectively reducing the risk of incomplete welding, thereby improving the welding effect of the welding device.

[0035] Secondly, embodiments of this application provide a battery manufacturing apparatus, including the welding apparatus described in any of the above embodiments.

[0036] The beneficial effects of the battery manufacturing equipment provided in this application are as follows: the battery manufacturing equipment provided in this application effectively saves the changeover time of the welding device by adopting the welding device described in any of the above embodiments, thereby effectively improving the production efficiency of the battery device. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is an exploded structural diagram of the battery device provided in the embodiments of this application;

[0039] Figure 2 This is a schematic diagram of the welding apparatus provided in the embodiments of this application;

[0040] Figure 3 for Figure 2 The diagram shows the exploded structure of the welding device.

[0041] Figure 4 for Figure 3 A schematic diagram of the structure of the rotating shaft in the welding device shown;

[0042] Figure 5 for Figure 3 A schematic diagram of the exploded structure of the pressure-applying component in the welding apparatus shown.

[0043] Figure 6 for Figure 3 A schematic diagram of the dustproof component in the welding apparatus shown.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100. Welding equipment;

[0046] 10. Base; 11. Dust extraction channel; 12. Sealing body; 13. Cover plate; 14. Sealing element;

[0047] 20. Pressure-applying component; 21. Welding channel; 22. Protrusion; 23. Mounting base; 231. First through hole; 24. Pressure head; 241. Second through hole; 25. Flexible connector; 26. Dust suction pipe;

[0048] 30. Adjustment mechanism; 31. Rotating shaft; 311. Spiral groove; 3111. First spiral groove; 3112. Second spiral groove; 312. First shaft section; 313. Second shaft section; 314. Reference surface; 32. Driver;

[0049] 40. Dustproof component; 41. First fixed end; 42. Second fixed end; 43. Telescopic main body; 431. Folding section; 44. First support component; 45. Second support component; 46. Third support component;

[0050] 200. Battery assembly; 201. Housing; 2011. First housing; 2012. Second housing; 202. Battery cell; 2021. Casing; 2022. Electrode terminal. Detailed Implementation

[0051] 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.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0053] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0054] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0055] Unless otherwise specified, all steps of this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order; for example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0056] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0057] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0058] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0059] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0060] 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.

[0061] 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.

[0062] A battery device includes multiple battery cells, which are the smallest units for storing electrical energy. Each battery cell includes electrode terminals, and the electrode terminals of each battery cell are connected to a busbar to connect multiple battery cells in series, parallel, or mixed. Mixed connection means that multiple battery cells are connected in both series and parallel.

[0063] In related technologies, welding equipment is typically used to weld electrode terminals and busbar components. During the welding process, in order to improve the welding effect and reduce the risk of incomplete welds, the welding equipment is usually equipped with multiple pressure-applying components. The positions of these pressure-applying components need to correspond one-to-one with the positions of the multiple electrode terminals to press the busbar component and the multiple electrode terminals into close contact. Subsequently, the welding mechanism in the welding equipment performs the welding operation on the electrode terminals and the busbar component.

[0064] Different battery models have different cell sizes and structures, resulting in varying electrode terminal positions and spacing between adjacent terminals. However, the placement of the pressure components in the welding apparatus is typically fixed, leading to poor compatibility and an inability to adapt to changes in electrode terminal positions across different battery models. Therefore, when switching from one battery model to another during production, additional time must be spent replacing the pressure components in the welding apparatus, hindering production efficiency.

[0065] To improve the compatibility of the welding device, the adjustment mechanism in the welding device provided in this application embodiment can drive at least two pressure members to move relative to each other along a first direction. This allows the spacing between the at least two pressure members along the first direction to be adjusted according to the different spacing between the at least two parts to be welded along the first direction. For example, the spacing between the at least two pressure members along the first direction can be adjusted according to the actual spacing between the at least two electrode terminals in different models of battery devices. This ensures that the spacing between the at least two pressure members along the first direction can adapt to the actual spacing between the at least two electrode terminals in different models of battery devices, effectively improving the compatibility of the welding device. This saves the changeover time of the welding device and helps to improve the production efficiency of the battery device.

[0066] The welding apparatus disclosed in this application can be applied to the welding process of battery devices. For example, the welding apparatus is used to weld the electrode terminals of individual battery cells to a busbar component in a battery device, or to weld the terminals of a battery module to a busbar component in a battery device. Of course, the welding apparatus disclosed in this application can also be applied to the welding process of other workpieces, such as the welding process of plates, the welding process of support beams, etc.

[0067] The battery device disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0068] Figure 1 This is an exploded structural diagram of the battery device 200 provided in an embodiment of this application. The battery device 200 mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells 202, which are connected in series, parallel, or mixed connection via a busbar.

[0069] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells 202.

[0070] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 202 together to form an independent module. As an example, the battery module can be formed by bundling multiple battery cells 202 together with cable ties.

[0071] In some embodiments, the battery device 200 may be a battery pack, which includes a housing 201 and one or more battery cell assemblies, the battery cell assemblies being housed in the housing 201.

[0072] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 201 by fixing the battery module in the housing 201.

[0073] As an example, the battery cell assembly can also be housed in the housing 201 by directly fixing multiple battery cells 202 to the housing 201.

[0074] As an example, the housing 201 may include a first housing 2011 and a second housing 2012. The first housing 2011 and the second housing 2012 are fastened together to form a closed space inside the housing 201 to house the battery cell assembly. Here, "closed" refers to covering or closing, which can be sealed or unsealed. The first housing 2011 may be a top cover or a bottom plate.

[0075] As an example, the housing 201 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 201 forms an enclosed space to accommodate the battery cell assembly.

[0076] In some embodiments, the housing 201 may be part of the vehicle's chassis structure. For example, a portion of the housing 201 may be at least a portion of the vehicle's floor, or a portion of the housing 201 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0077] In this embodiment of the application, the battery cell 202 can be a secondary battery. A secondary battery refers to a battery cell 202 that can be used again after being discharged by recharging to activate the active materials.

[0078] The battery cell 202 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0079] A battery cell 202 typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator, with the separator positioned between the negative and positive electrodes. During the charging and discharging process of the battery cell 202, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0080] The electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0081] In some implementations, the electrode assembly is a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0082] In some implementations, the electrode assembly is a stacked structure.

[0083] As an example, multiple positive and negative electrodes can be set, and multiple positive and multiple negative electrodes can be stacked alternately.

[0084] As an example, multiple positive electrode plates can be provided, and negative electrode plates can be folded to form multiple stacked folded sections, with a positive electrode plate sandwiched between adjacent folded sections.

[0085] As an example, both the positive and negative electrode sheets are folded to form multiple stacked folded sections.

[0086] As an example, multiple separators can be provided, each positioned between any adjacent positive or negative electrode plates.

[0087] As an example, the separators can be continuously arranged, either by folding or rolling between any adjacent positive or negative electrode plates.

[0088] In some embodiments, the electrode assembly can be cylindrical, flat, or polygonal, etc.

[0089] In some embodiments, the electrode assembly has tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0090] In some embodiments, the battery cell 202 may include a housing 2021. The housing 2021 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 2021), or an aluminum-plastic film, etc. In some embodiments, the housing 2021 may be a sealed structure or a non-sealed structure. As an example, when the housing 2021 is a non-sealed structure, the housing 2021 serves to protect the electrode assembly, and a sealing bag is also included between the housing 2021 and the electrode assembly. The sealing bag is used to encapsulate the electrode assembly and electrolyte. Specifically, the sealing bag may be a bag-shaped insulating component or an aluminum-plastic film. When the housing 2021 is a sealed structure, it is used to encapsulate components such as the electrode assembly and electrolyte.

[0091] As an example, the battery cell 202 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell 202 of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells. Multi-prismatic battery cells are, for example, hexagonal prismatic battery cells. This application does not have any particular limitations.

[0092] In some embodiments, the housing 2021 includes an end cap and a housing, the housing having an opening, and the end cap covering the opening. The housing may have one or more openings. The end cap may also be provided with one or more.

[0093] In some embodiments, at least one electrode terminal 2022 is provided on the housing 2021, and the electrode terminal 2022 is electrically connected to the tab. The electrode terminal 2022 can be directly connected to the tab, or it can be indirectly connected to the tab through a current collector. The electrode terminal 2022 can be provided on the end cap or on the housing.

[0094] In some embodiments, the electrode terminals 2022 of a plurality of battery cells 202 are welded to a busbar to achieve electrical connection between the plurality of battery cells 202.

[0095] To illustrate the technical solutions provided in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0096] Firstly, please refer to the following: Figure 2 and Figure 3This application provides a welding device 100, including a base 10, an adjustment mechanism 30, and a plurality of pressure-applying components 20. The plurality of pressure-applying components 20 are arranged and installed on the base 10 along a first direction. Each pressure-applying component 20 has a welding channel 21, which passes through the opposite ends of the pressure-applying component 20 along the downward pressing direction. The pressure-applying components 20 are used to press against the part to be welded. At least two pressure-applying components 20 can move relative to each other along the first direction. The welding mechanism is used to weld the part to be welded through the welding channel 21. The adjustment mechanism 30 is used to drive at least two pressure-applying components 20 to move relative to each other along the first direction to adjust the distance between the at least two pressure-applying components 20 along the first direction.

[0097] It should be noted that the welding device 100 has a first direction, a second direction, and a third direction. The third direction can be the downward pressing direction of the pressure member 20, meaning the pressure member 20 can move along the third direction towards the part to be welded to press against it. Figure 1 and Figure 2 The Z direction is shown. Both the first and second directions are perpendicular to the third direction. The first direction can be... Figure 1 and Figure 2 The X direction shown can be the second direction. Figure 1 and Figure 2 Y direction shown.

[0098] The base 10 can be used to provide an installation environment for the pressure application component 20 and the adjustment mechanism 30. The base 10 can be made of materials such as, but are not limited to, aluminum, aluminum alloy, copper, iron, steel, and plastic. The base 10 can be a one-piece molded component or a separate component.

[0099] In some embodiments, the base 10 includes a seat 12, an adjustment mechanism 30 and a plurality of pressure-applying elements 20, all mounted on the seat 12.

[0100] As an example, the base 10 also includes a cover plate 13, which covers the seat 12 in a third direction to cooperate with the seat 12 to limit the position of the plurality of pressure members 20 in a third direction.

[0101] The pressure-applying component 20 is a component that directly contacts the part to be welded and applies pressure to the part to be welded. Multiple pressure-applying components 20 can be positioned one-to-one with the positions of multiple parts to be welded, or one pressure-applying component 20 can be positioned corresponding to the positions of at least two parts to be welded.

[0102] A welding mechanism is a component used to perform welding operations on the parts to be welded. Understandably, with the pressure member 20 pressed against the parts to be welded, the welding mechanism passes through the welding channel 21 to perform the welding operation. The welding mechanism can be, but is not limited to, a laser welding mechanism, an arc welding mechanism, an ultrasonic welding mechanism, etc.

[0103] In some embodiments, please refer to Figure 5 The pressure-applying component 20 includes a mounting base 23 and a pressure head 24. The mounting base 23 is mounted on the base 10, and the pressure head 24 is connected to the mounting base 23 and used to press against the part to be welded. The mounting base 23 has a first through hole 231 that penetrates the mounting base 23 along the downward pressing direction of the pressure-applying component 20. The pressure head 24 has a second through hole 241 that penetrates the pressure head 24 along the downward pressing direction of the pressure-applying component 20. The first through hole 231 and the second through hole 241 are positioned opposite each other and connected to form a welding channel 21.

[0104] As an example, the pressure member 20 is used to press against the busbar component in the battery device 200 so that the busbar component and the plurality of electrode terminals 2022 are in contact with each other. When the busbar component and the plurality of electrode terminals 2022 are in contact with each other, the welding mechanism performs a welding operation on the busbar component and the plurality of electrode terminals 2022. The positions of the plurality of pressure members 20 may correspond one-to-one with the positions of the plurality of electrode terminals 2022, or one pressure member 20 may correspond to the position of at least two electrode terminals 2022.

[0105] At least two of the plurality of pressure-applying elements 20 may move relative to each other in a first direction.

[0106] In some embodiments, a plurality of pressure-applying members 20 may be slidably mounted on the base 10 and may move on the base 10 in a first direction.

[0107] As an example, a slide rail is provided on the base 10, which extends along a first direction, and a slider is provided on each of the multiple pressure-applying components 20, with the sliders on the multiple pressure-applying components 20 slidingly engaging with the slide rail.

[0108] In some embodiments, the number of pressure-applying elements 20 is an even number, and all pressure-applying elements 20 can move along a first direction on the base 10.

[0109] In some other embodiments, the number of pressure-applying members 20 is odd. Along the first direction, the middle pressure-applying member 20 is fixed on the base 10, and the remaining pressure-applying members 20 can move on the base 10 along the first direction.

[0110] The adjusting mechanism 30 is a mechanism for providing power to move at least two pressure members 20 relative to each other in a first direction. The adjusting mechanism 30 can be an electric mechanism or a manual mechanism. The adjusting mechanism 30 can be, but is not limited to, a rotary drive mechanism, a linear drive mechanism, a linkage drive mechanism, etc.

[0111] Understandably, the adjustment mechanism 30 can be operated according to the actual distance between at least two parts to be welded along the first direction to drive the corresponding at least two pressure members 20 to move relative to each other along the first direction, thereby adjusting the distance between the at least two pressure members 20 along the first direction.

[0112] In some embodiments, the adjusting mechanism 30 can be used to drive two adjacent pressure-applying members 20 to move relative to each other along a first direction, so as to adjust the distance between two adjacent pressure-applying members 20 along the first direction. That is, in this embodiment, the distance between two adjacent pressure-applying members 20 along the first direction can be adjusted according to the actual distance between two adjacent welding parts along the first direction.

[0113] The adjustment mechanism 30 in the welding apparatus 100 provided in this application embodiment can drive at least two pressure members 20 to move relative to each other along a first direction. This allows the spacing between the at least two pressure members 20 along the first direction to be adjusted according to the different spacing between the at least two parts to be welded along the first direction. For example, the spacing between the at least two pressure members 20 along the first direction can be adjusted according to the actual spacing between the at least two electrode terminals 2022 in different models of battery devices 200. This allows the spacing between the at least two pressure members 20 along the first direction to adapt to the actual spacing between the at least two electrode terminals 2022 in different models of battery devices 200, effectively improving the compatibility of the welding apparatus 100. This saves the changeover time of the welding apparatus 100 and helps to improve the production efficiency of the battery device 200.

[0114] Please refer to some embodiments of this application as well. Figures 2 to 4 The adjustment mechanism 30 includes a rotating shaft 31 and a driver 32. The rotating shaft 31 is rotatably mounted on the base 10. The driver 32 is used to drive the rotating shaft 31 to rotate. A plurality of spiral grooves 311 are provided on the outer peripheral surface of the rotating shaft 31. The spiral grooves 311 extend spirally around the central axis of the rotating shaft 31. The plurality of spiral grooves 311 are in sliding fit with at least a portion of the plurality of pressure members 20 in a one-to-one correspondence.

[0115] The driver 32 is used to drive the rotating shaft 31 to rotate. The driver 32 can be, but is not limited to, an electric motor, a pneumatic motor, a hydraulic motor, etc.

[0116] In some embodiments, the driver 32 is a motor, which can be, but is not limited to, a servo motor, a stepper motor, a speed-regulating motor, etc.

[0117] In some embodiments, the rotating shaft 31 is rotatably mounted on the base 10, and one end of the rotating shaft 31 is connected to the power output end of the driver 32.

[0118] As an example, the base 10 may include a base 12 and two bearings (not shown in the figure). The two bearings are mounted on the base 12 and are coaxial and separated along a first direction. One end of the rotating shaft 31 is mounted on one bearing and connected to the power output end of the driver 32, and the other end of the rotating shaft 31 is mounted on the other bearing.

[0119] The spiral groove 311 is a groove formed on the outer peripheral surface of the rotating shaft 31. Multiple spiral grooves 311 are arranged along a first direction, and each spiral groove 311 extends spirally around the central axis of the rotating shaft 31. The one-to-one sliding engagement of the multiple spiral grooves 311 with at least a portion of the multiple pressure-applying members 20 means that each spiral groove 311 slides into one pressure-applying member 20, so that the pressure-applying member 20 can move along the first direction under the guidance of the spiral grooves 311.

[0120] As an example, the number of pressure-applying components 20 is even, and all pressure-applying components 20 can move on the base 10 along the first direction and slide in a one-to-one correspondence with the plurality of spiral grooves 311.

[0121] As an example, the number of pressure-applying components 20 is odd. Along the first direction, the middle pressure-applying component 20 is fixed on the base 10, and the remaining pressure-applying components 20 can move on the base 10 along the first direction and slide in a one-to-one correspondence with the plurality of spiral grooves 311.

[0122] In this embodiment, during the process of the driver 32 driving the rotating shaft 31 to rotate, the spiral groove 311 rotates with the rotating shaft 31, and the pressure member 20 moves along the first direction under the guidance of the spiral groove 311, so as to convert the rotational motion of the rotating shaft 31 into the linear motion of the pressure member 20 along the first direction.

[0123] By adopting the above technical solution, during the process of the drive 32 driving the rotating shaft 31 to rotate, the sliding cooperation between the spiral groove 311 and the pressure member 20 can be used to drive multiple pressure members 20 to move along the first direction, which effectively simplifies the overall structure of the welding device 100, thereby making the overall structure of the welding device 100 more compact.

[0124] In some embodiments of this application, please refer to Figure 4 The rotating shaft 31 includes a first shaft segment 312 and a second shaft segment 313. The plurality of spiral grooves 311 include at least one first spiral groove 3111 opened on the outer peripheral surface of the first shaft segment 312 and at least one second spiral groove 3112 opened on the outer peripheral surface of the second shaft segment 313. The spiral direction of the first spiral groove 3111 is opposite to that of the second spiral groove 3112.

[0125] Understandably, the first shaft segment 312 and the second shaft segment 313 are two parallel and coaxial parts of the rotating shaft 31. At least one first spiral groove 3111 is formed on the outer peripheral surface of the first shaft segment 312, and at least one second spiral groove 3112 is formed on the outer peripheral surface of the second shaft segment 313.

[0126] The rotation direction of the first helical groove 3111 is opposite to that of the second helical groove 3112; that is, one of the first helical groove 3111 and the second helical groove 3112 rotates clockwise, and the other rotates counterclockwise. Thus, during the rotation of the shaft 31 driven by the driver 32, the pressure-applying member 20 slidingly engaged with the first helical groove 3111 and the pressure-applying member 20 slidingly engaged with the second helical groove 3112 can move closer to or further away from each other in a first direction, thereby adjusting the distance between at least two pressure-applying members 20 along the first direction.

[0127] By adopting the above technical solution, during the process of the driver 32 driving the rotating shaft 31 to rotate, since the rotation direction of the first spiral groove 3111 is opposite to that of the second spiral groove 3112, at least two pressure members 20 can be driven to move relative to each other along the first direction, thereby realizing the adjustment of the distance between at least two pressure members 20 along the first direction. This not only has high adjustment accuracy, but also makes the overall structure of the welding device 100 more compact.

[0128] In some embodiments of this application, please refer to Figure 4 The plurality of spiral grooves 311 include a plurality of first spiral grooves 3111 and a plurality of second spiral grooves 3112. Along the axial direction of the rotating shaft 31 and toward the direction away from the second shaft segment 313, the lead of the plurality of first spiral grooves 3111 gradually increases, and along the axial direction of the rotating shaft 31 and toward the direction away from the first shaft segment 312, the lead of the plurality of second spiral grooves 3112 gradually increases.

[0129] The lead of the first helical groove 3111 refers to the linear distance that any reference point in the first helical groove 3111 moves along the first direction after the rotating shaft 31 rotates by a unit angle. The lead of the second helical groove 3112 refers to the linear distance that any reference point in the second helical groove 3112 moves along the first direction after the rotating shaft 31 rotates by a unit angle.

[0130] For the plurality of pressure-applying components 20 that slide in conjunction with the first spiral groove 3111, the movement direction of each pressure-applying component 20 is the same. Therefore, in order to adjust the distance between each pair of adjacent pressure-applying components 20, the movement speed of each pair of adjacent pressure-applying components 20 should be different. Similarly, for the plurality of pressure-applying components 20 that slide in conjunction with the second spiral groove 3112, the movement direction of each pressure-applying component 20 is the same. Therefore, in order to adjust the distance between each pair of adjacent pressure-applying components 20, the movement speed of each pair of adjacent pressure-applying components 20 should be different.

[0131] In this embodiment, along the axial direction of the rotating shaft 31 and in a direction away from the second shaft segment 313, the lead of the plurality of first spiral grooves 3111 gradually increases. For the plurality of pressure-applying members 20 that slide with the first spiral grooves 3111, during the process of the driver 32 driving the rotating shaft 31 to rotate, the moving speed of each pressure-applying member 20 also gradually increases, thereby achieving adjustment of the spacing between the plurality of pressure-applying members 20. Similarly, along the axial direction of the rotating shaft 31 and in a direction away from the first shaft segment 312, the lead of the plurality of second spiral grooves 3112 gradually increases. For the plurality of pressure-applying members 20 that slide with the second spiral grooves 3112, during the process of the driver 32 driving the rotating shaft 31 to rotate, the moving speed of each pressure-applying member 20 also gradually increases, thereby achieving adjustment of the spacing between the plurality of pressure-applying members 20. Meanwhile, since the rotation direction of the first spiral groove 3111 is opposite to that of the second spiral groove 3112, during the process of the driver 32 driving the rotating shaft 31 to rotate, the pressure member 20 that slides with the first spiral groove 3111 and the pressure member 20 that slides with the second spiral groove 3112 can move closer to each other or further away from each other in the first direction, thereby realizing the adjustment of the distance between each pair of adjacent pressure members 20 along the first direction.

[0132] By adopting the above technical solution, during the process of the drive 32 driving the rotating shaft 31 to rotate, the sliding cooperation between the spiral groove 311 and the pressure member 20 can be used to drive the two adjacent pressure members 20 to move relative to each other along the first direction, thereby realizing the adjustment of the distance between the two adjacent pressure members 20 along the first direction. This not only has high adjustment accuracy, but also further improves the compatibility of the welding device 100.

[0133] In some embodiments of this application, please refer to Figure 4 The rotating shaft 31 has a reference surface 314 perpendicular to the first direction. The reference surface 314 is located between the first shaft segment 312 and the second shaft segment 313. A plurality of first spiral grooves 3111 and a plurality of second spiral grooves 3112 are symmetrically arranged about the reference surface 314.

[0134] Understandably, the reference plane 314 refers to a plane perpendicular to the first direction, that is, a plane perpendicular to the central axis of the rotating shaft 31. The first shaft segment 312 is disposed on one side of the reference plane 314 along the first direction, and the second shaft segment 313 is disposed on the other side of the reference plane 314 along the first direction.

[0135] As an example, the first shaft segment 312 and the second shaft segment 313 are symmetrically arranged about the reference plane 314.

[0136] By adopting the above technical solution, since the multiple first spiral grooves 3111 and multiple second spiral grooves 3112 are symmetrically arranged about the reference plane 314, that is, a pair of first spiral grooves 3111 and second spiral grooves 3112 symmetrically arranged about the reference plane 314 have the same lead but opposite spiral directions. Accordingly, the two pressure members 20 that slide and cooperate with each pair of first spiral grooves 3111 and second spiral grooves 3112 have the same moving speed and moving distance. In this way, during the process of the driver 32 driving the rotating shaft 31 to rotate, multiple pressure members 20 can be driven to symmetrically unfold or move closer along the first direction, so that the spacing between at least two pressure members 20 along the first direction can be adjusted more accurately, effectively improving the adjustment accuracy of the welding device 100.

[0137] In some embodiments of this application, the leads of a plurality of first spiral grooves 3111 are a first arithmetic sequence, the leads of a plurality of second spiral grooves 3112 are a second arithmetic sequence, the common difference of the first arithmetic sequence is d1, the common difference of the second arithmetic sequence is d2, and the lead of the first spiral groove 3111 closest to the reference surface 314 among the plurality of first spiral grooves 3111 is L, satisfying: d1=d2=2L.

[0138] In some embodiments, a plurality of first spiral grooves 3111 and a plurality of second spiral grooves 3112 are symmetrically arranged about a reference plane 314; along the axial direction of the rotating shaft 31 and in a direction away from the second shaft segment 313, the lead of the plurality of first spiral grooves 3111 gradually increases, and along the axial direction of the rotating shaft 31 and in a direction away from the second shaft segment, the lead of the plurality of second spiral grooves 3112 gradually increases; the lead of the plurality of first spiral grooves 3111 is a first arithmetic sequence, the lead of the plurality of second spiral grooves 3112 is a second arithmetic sequence, the common difference of the first arithmetic sequence is d1, the common difference of the second arithmetic sequence is d2, and the lead of the first spiral groove 3111 closest to the reference plane 314 among the plurality of first spiral grooves 3111 is L, satisfying: d1=d2=2L.

[0139] By adopting the above technical solution, since the lead of the first spiral groove 3111 and the lead of the second spiral groove 3112 are respectively in an arithmetic sequence, the spacing of the multiple pressure-applying components 20 that slide with the first spiral groove 3111 can remain equal during the rotation of the rotating shaft 31 driven by the driver 32. Similarly, the spacing of the multiple pressure-applying components 20 that slide with the second spiral groove 3112 can also remain equal during the rotation of the rotating shaft 31 driven by the driver 32. Furthermore, since the tolerance of the arithmetic sequence is equal to 2L, the spacing of the multiple pressure-applying components 20 that slide with the first spiral groove 3111 is equal to the spacing of the multiple pressure-applying components 20 that slide with the second spiral groove 3112. This ensures that the spacing of each pair of adjacent pressure-applying components 20 remains equal during the adjustment of the spacing along the first direction, effectively improving the adjustment accuracy of the welding device 100.

[0140] In some embodiments of this application, please refer to Figure 5 The pressure-applying member 20 is slidably mounted on the base 10. The pressure-applying member 20 has a protrusion 22, and the protrusions 22 of the multiple pressure-applying members 20 are inserted into the multiple spiral grooves 311 in a one-to-one correspondence.

[0141] In some embodiments, the shape of the protrusion 22 may be adapted to the cross-sectional shape of the spiral groove 311.

[0142] As an example, the protrusion 22 has a spherical or hemispherical structure, and the cross-sectional shape of the spiral groove 311 is an arc.

[0143] In some embodiments, please refer to Figure 5 The pressure-applying component 20 includes a mounting base 23 and a pressure head 24. The mounting base 23 is mounted on the base 10, and the pressure head 24 is connected to the mounting base 23 and used to press against the part to be welded. The protrusion 22 is provided on the side of the mounting base 23 facing the rotating shaft 31.

[0144] By adopting the above technical solution, not only is the installation stability of the pressure-applying component 20 improved, but the fit stability between the pressure-applying component 20 and the spiral groove 311 is also improved, thereby enabling the pressure-applying component 20 to move stably along the first direction and effectively improving the adjustment accuracy of the welding device 100.

[0145] Please refer to some embodiments of this application as well. Figure 2 and Figure 3 The welding apparatus 100 also includes a dustproof component 40, which is disposed on the outer side of the port of the welding channel 21 of the plurality of pressure components 20 away from the part to be welded.

[0146] The dustproof component 40 is a component used to prevent dust generated during the welding process from spreading outward and to prevent foreign objects from entering the welding channel 21. The dustproof component 40 is disposed on the outer side of the port of the welding channel 21 of the multiple pressure components 20 away from the part to be welded. Understandably, the dustproof component 40 is disposed on the same side of the port of the welding channel 21 of the multiple pressure components 20 away from the part to be welded.

[0147] In some embodiments, the welding apparatus 100 may include at least two dustproof components 40, at least one dustproof component 40 being disposed on one side of the welding channel 21 of the plurality of pressure components 20 away from the port to be welded along the second direction, and at least another dustproof component 40 being disposed on the other side of the welding channel 21 of the plurality of pressure components 20 away from the port to be welded along the second direction.

[0148] By adopting the above technical solution, on the one hand, the dustproof component 40 can prevent foreign objects from entering the welding channel 21, thereby improving the welding environment and thus improving the welding effect of the welding device 100; on the other hand, the dustproof component 40 can also prevent the dust generated during the welding process from spreading outward. For example, the dustproof component 40 can prevent the dust generated during the welding process from spreading into the interior of the battery device 200, thereby improving the production environment and thus improving the production yield.

[0149] Please refer to some embodiments of this application as well. Figure 2 and Figure 6 The dustproof component 40 is a telescopic structural component. The dustproof component 40 has a first fixed end 41 and a second fixed end 42. The first fixed end 41 is connected to the first pressure-applying component 20 along the first direction among the plurality of pressure-applying components 20, and the second fixed end 42 is connected to the last pressure-applying component 20 along the first direction among the plurality of pressure-applying components 20.

[0150] Understandably, the first fixed end 41 and the second fixed end 42 of the dustproof component 40 are the two ends of the dustproof component 40 along the first direction. The first fixed end 41 and the second fixed end 42 are respectively connected to the first pressure member 20 and the last pressure member 20 along the first direction among the plurality of pressure members 20, so that the dustproof component 40 can move in a telescoping motion along the first direction as the spacing of the plurality of pressure members 20 changes, thereby enabling the dustproof component 40 to keep covering the plurality of pressure members 20.

[0151] In some embodiments, the dustproof component 40 can be an elastic component, that is, the dustproof component 40 can undergo elastic deformation along the first direction.

[0152] In other embodiments, the dustproof component 40 can be a folding component, that is, the dustproof component 40 can be unfolded or folded along the first direction.

[0153] By adopting the above technical solution, the coverage of the dustproof component 40 can automatically adapt to the change in the spacing of the multiple pressure-applying components 20, so that the dustproof component 40 can maintain coverage of the multiple pressure-applying components 20, thereby maintaining the protective effectiveness of the dustproof component 40 and effectively improving the reliability of the dustproof component 40.

[0154] In some embodiments of this application, please refer to Figure 6 The dustproof component 40 includes a retractable body 43, a first support 44, and a second support 45. The first support 44 is connected to one end of the retractable body 43 to form a first fixed end 41, and the second support 45 is connected to the other end of the retractable body 43 to form a second fixed end 42.

[0155] The retractable body 43 is the main component of the dustproof part 40. The retractable body 43 is used to prevent dust generated during the welding process from spreading outward and to prevent foreign objects from entering the welding channel 21.

[0156] In some embodiments, the retractable body 43 can be an elastic element, that is, the dustproof element 40 can undergo elastic deformation along the first direction.

[0157] In other embodiments, the retractable body 43 can be a folding component, i.e., the dustproof component 40 can be unfolded or folded along the first direction.

[0158] The first support member 44 and the second support member 45 are components used to support the retractable main body 43. Understandably, both the first support member 44 and the second support member 45 are made of rigid materials, which can be, but are not limited to, aluminum alloy, stainless steel, copper, iron, hard plastic, etc.

[0159] By adopting the above technical solution, the structural stability and installation stability of the dustproof component 40 are effectively improved while realizing the telescopic function of the dustproof component 40, thereby effectively improving the reliability of the dustproof component 40.

[0160] In some embodiments of this application, please refer to Figure 6 The dustproof component 40 also includes at least one third support component 46, which is disposed between the first support component 44 and the second support component 45 and connected to the telescopic body 43. The first support component 44, the second support component 45 and the third support component 46 are connected to the plurality of pressure components 20 in a one-to-one correspondence.

[0161] The third support member 46 is a component used to support the retractable body 43. The first support member 44, the second support member 45, and the third support member 46 are arranged separately along the first direction and are all connected to the retractable body 43 to jointly support the retractable body 43. Understandably, the third support member 46 is made of rigid material, which can be, but is not limited to, aluminum alloy, stainless steel, copper, iron, hard plastic, etc.

[0162] The first support member 44, the second support member 45, and the third support member 46 are connected to the multiple pressure members 20 in a one-to-one correspondence, so that the first support member 44, the second support member 45, and the third support member 46 can move synchronously with the corresponding pressure members 20, thereby driving the retractable body 43 to retract along the first direction as the spacing of the multiple pressure members 20 changes, so that the dustproof member 40 can keep covering the multiple pressure members 20.

[0163] By adopting the above technical solution, the structural stability and installation stability of the dustproof component 40 are further improved, thereby further improving the reliability of the dustproof component 40.

[0164] In some embodiments of this application, please refer to Figure 6 The retractable body 43 includes a plurality of folding segments 431 connected in sequence, and a third support member 46 is connected to the connection point of two adjacent folding segments 431.

[0165] In this embodiment, the retractable body 43 is a folding component, meaning that the multiple folding segments 431 of the retractable body 43 can be unfolded or folded along the first direction.

[0166] In some embodiments, please refer to Figure 6 The dustproof component 40 includes a plurality of third support components 46, which are connected one-to-one to the connection of each of two adjacent folding sections 431. The first support component 44, the second support component 45 and the plurality of third support components 46 are connected one-to-one to the plurality of pressure components 20.

[0167] By adopting the above technical solution, the structure of the retractable main body 43 is simplified and the production cost of the dustproof component 40 is reduced.

[0168] In some embodiments of this application, the pressure-applying member 20 is also provided with a dust suction port (not shown in the figure), which is connected to the welding channel 21 and used to connect to an external negative pressure device.

[0169] Understandably, dust will be generated during the welding process of the welding mechanism. The external negative pressure device can suck away the dust in the welding channel 21 through the dust suction port to reduce the adverse effects of dust on the welding operation.

[0170] By adopting the above technical solution, the external negative pressure device can suck away the dust in the welding channel 21 through the dust suction port, thereby improving the welding environment and effectively improving the welding effect of the welding device 100.

[0171] Please refer to some embodiments of this application as well. Figure 2 and Figure 3The base 10 has a dust suction channel 11, which is used to connect to an external negative pressure device. The pressure application component 20 also includes a dust suction pipe 26, one end of which is connected to a dust suction port. The ends of multiple dust suction pipes 26 away from their respective dust suction ports are all connected to the dust suction channel 11.

[0172] The suction pipe 26 is a component used to connect the suction channel 11 and the suction port.

[0173] In some embodiments, the suction pipe 26 is a bent pipe to facilitate the connection between the suction channel 11 and the suction port. For example, the suction pipe 26 includes a first pipe segment and a second pipe segment connected to each other. The first pipe segment and the second pipe segment are perpendicular to each other. The end of the first pipe segment away from the second pipe segment is connected to the suction channel 11, and the end of the second pipe segment away from the first pipe segment is connected to the suction port.

[0174] Understandably, during the operation of the external negative pressure device, a negative pressure will be generated in the dust suction channel 11, and the welding channels 21 of each pressure-applying component 20 will also generate a negative pressure, so that the dust in each welding channel 21 can be collected in the dust suction channel 11 through the corresponding dust suction port and the corresponding dust suction pipe 26 in sequence, and finally sucked away by the external negative pressure device.

[0175] In some embodiments, please refer to Figure 2 The base 10 includes a seat body 12 and a cover plate 13. The adjustment mechanism 30 and multiple pressure-applying components 20 are all installed on the seat body 12. The cover plate 13 is placed on the seat body 12 along the third direction to cooperate with the seat body 12 to restrict the position of the multiple pressure-applying components 20 along the third direction. The cover plate 13 is provided with the aforementioned dust suction channel 11.

[0176] As an example, in order to reduce the risk of dust leakage to the outside of the base 10, the base 10 also includes a seal 14, which is pressed between the base 12 and the cover plate 13, and the seal 14 is arranged around the dust suction channel 11.

[0177] By adopting the above technical solution, the external negative pressure device can suck away the dust in multiple welding channels 21 through the dust suction channel 11, thereby effectively simplifying the dust removal pipeline structure of the welding device 100 and facilitating daily maintenance.

[0178] In some embodiments of this application, please refer to Figure 5 The pressure-applying component 20 includes a mounting base 23, a pressure head 24, and an elastic connector 25. The mounting base 23 is slidably mounted on the base 10, the pressure head 24 is used to press against the part to be welded, and the elastic connector 25 connects the mounting base 23 and the pressure head 24.

[0179] Mounting base 23 is a component used to provide an installation environment for pressure head 24. Mounting base 23 can be a one-piece molded component or a separate component.

[0180] The pressure head 24 is a component used to press against the part to be welded. The pressure head 24 can be made of high-temperature resistant materials, which can be, but are not limited to, copper, aluminum, aluminum alloys, iron, steel, etc.

[0181] The flexible connector 25 is a component used to connect the mounting base 23 and the pressure head 24. There can be one or more flexible connectors 25.

[0182] In some embodiments, there are multiple elastic connectors 25, which are evenly arranged along the circumference of the pressure head 24.

[0183] In some embodiments, the elastic connector 25 includes an elastic element and a connector. The connector is connected to the mounting base 23. The pressure head 24 is slidably mounted on the connector and can reciprocate along the downward pressing direction of the pressure head 24. One end of the elastic element presses against the pressure head 24, and the other end of the elastic element presses against the mounting base 23 or the connector. When the pressure head 24 presses against the part to be welded, the elastic element is in a compressed state. When the pressure head 24 separates from the part to be welded, the elastic element returns to its original state. The elastic element can be, but is not limited to, a spring, a sheet, or an elastic block.

[0184] As an example, the elastic element is a spring, which is sleeved on the connector. One end of the elastic element presses against the pressure head 24, and the other end of the elastic element presses against the mounting base 23 or the connector.

[0185] By adopting the above technical solution, the mounting base 23 and the pressure head 24 can be elastically connected, so that the pressure head 24 has a certain buffering and self-adaptive ability when pressing against the part to be welded. For example, multiple pressure components 20 can compensate for the height difference between multiple parts to be welded under elastic action, so that multiple pressure components 20 can provide stable downward pressure to multiple parts to be welded, effectively reducing the risk of false welding, thereby improving the welding effect of the welding device 100.

[0186] Secondly, embodiments of this application provide a battery manufacturing apparatus, including the welding apparatus 100 described in any of the above embodiments.

[0187] The beneficial effects of the battery manufacturing equipment provided in this application embodiment are as follows: the battery manufacturing equipment provided in this application embodiment effectively saves the changeover time of the welding device 100 by adopting the welding device 100 described in any of the above embodiments, thereby effectively improving the production efficiency of the battery device 200.

[0188] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A welding device, characterized in that, The welding apparatus includes: Base; Multiple pressure-applying components are arranged and installed on the base along a first direction. Each pressure-applying component has a welding channel that passes through the opposite ends of the pressure-applying component along the downward pressing direction. The pressure-applying component is used to press against the part to be welded. At least two of the pressure-applying components can move relative to each other along the first direction. A welding mechanism for welding the part to be welded through the welding channel; An adjustment mechanism is provided for driving at least two of the pressure-applying members to move relative to each other along the first direction, so as to adjust the spacing between the at least two pressure-applying members along the first direction.

2. The welding device of claim 1, wherein, The adjusting mechanism includes a rotating shaft and a driver. The rotating shaft is rotatably mounted on the base. The driver is used to drive the rotating shaft to rotate. A plurality of spiral grooves are formed on the outer circumferential surface of the rotating shaft. The spiral grooves extend spirally around the central axis of the rotating shaft. The plurality of spiral grooves are slidably engaged with at least a portion of the plurality of pressure-applying components.

3. The welding device of claim 2, wherein, The rotating shaft includes a first shaft segment and a second shaft segment. The plurality of spiral grooves include at least one first spiral groove formed on the outer peripheral surface of the first shaft segment and at least one second spiral groove formed on the outer peripheral surface of the second shaft segment. The spiral direction of the first spiral groove is opposite to that of the second spiral groove.

4. The welding device of claim 3, wherein, The plurality of spiral grooves include a plurality of first spiral grooves and a plurality of second spiral grooves. Along the axial direction of the rotating shaft and toward the direction away from the second shaft segment, the lead of the plurality of first spiral grooves gradually increases, and along the axial direction of the rotating shaft and toward the direction away from the first shaft segment, the lead of the plurality of second spiral grooves gradually increases.

5. The welding device of claim 4, wherein, The rotating shaft has a reference plane perpendicular to the first direction, the reference plane being located between the first shaft segment and the second shaft segment, and a plurality of first spiral grooves and a plurality of second spiral grooves being symmetrically arranged about the reference plane.

6. The welding device of claim 5, wherein The leads of the plurality of first spiral grooves are a first arithmetic sequence, the leads of the plurality of second spiral grooves are a second arithmetic sequence, the common difference of the first arithmetic sequence is d1, the common difference of the second arithmetic sequence is d2, and the lead of the first spiral groove closest to the reference surface among the plurality of first spiral grooves is L, satisfying: d1=d2=2L.

7. The welding device of claim 2, wherein, The pressure-applying component is slidably mounted on the base, and the pressure-applying component has a protrusion, with the protrusions of the plurality of pressure-applying components being inserted one-to-one into the plurality of spiral grooves.

8. The welding apparatus according to any one of claims 1-7, characterized in that, The welding apparatus further includes a dustproof component, which is disposed on the outer side of the port of the welding channel of the plurality of pressure-applying components away from the part to be welded.

9. The welding device of claim 8, wherein, The dustproof component is a telescopic structural component, and the dustproof component has a first fixed end and a second fixed end. The first fixed end is connected to the first pressure-applying component along the first direction among the plurality of pressure-applying components, and the second fixed end is connected to the last pressure-applying component along the first direction among the plurality of pressure-applying components.

10. The welding device of claim 9, wherein, The dustproof component includes a retractable body, a first support member, and a second support member. The first support member is connected to one end of the retractable body to form the first fixed end, and the second support member is connected to the other end of the retractable body to form the second fixed end.

11. The welding device of claim 10, wherein, The dustproof component also includes at least one third support component, which is disposed between the first support component and the second support component and connected to the retractable body. The first support component, the second support component, and the third support component are connected to the plurality of pressure-applying components in a one-to-one correspondence.

12. The welding device of claim 11, wherein, The retractable body includes multiple folded segments connected in sequence, and the third support is connected at the junction of two adjacent folded segments.

13. The welding device of any one of claims 1-7, wherein, The pressure-applying component is also provided with a dust suction port, which is connected to the welding channel and used to connect to an external negative pressure device.

14. The welding device of claim 13, wherein, The base is provided with a dust suction channel for connecting to the external negative pressure device. The pressure-applying component also includes a dust suction pipe, one end of which is connected to the dust suction port. The ends of the multiple dust suction pipes away from the corresponding dust suction ports are all connected to the dust suction channel.

15. The welding device of any one of claims 1-7, wherein, The pressure-applying component includes a mounting base, a pressure head, and an elastic connector. The mounting base is slidably mounted on the base, the pressure head is used to press against the part to be welded, and the elastic connector is connected between the mounting base and the pressure head.

16. A battery manufacturing apparatus, characterized by comprising: The battery manufacturing equipment includes the welding apparatus as described in any one of claims 1-15.

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