Welding device, battery production line and model changeover method

Abstract

A welding device (1000), comprising a base (100), a pressing assembly (200) and locking mechanisms (300), wherein the pressing assembly (200) comprises a mounting seat (210) and welding pressure heads (220), the welding pressure heads (220) being mounted on the mounting seat (210); and the locking mechanisms (300) are mounted on the base (100), and the locking mechanisms (300) are configured to lock or release the mounting seat (210). The welding device has a simple and convenient operation process, improves the replacement efficiency of the pressing assembly, and thus increases the production efficiency of batteries. The present application further relates to a battery production line and a model changeover method.

Description

Welding device, battery production line and conversion method

[0001] Cross-references

[0002] This application refers to Chinese patent application No. 202410010248.X filed on January 2, 2024, entitled “Welding device, battery production line and conversion method”, which is incorporated into this application in its entirety by reference. Technical Field

[0003] The present application relates to the field of battery manufacturing technology, and in particular to a welding device, a battery production line and a battery conversion method. Background Art

[0004] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important part of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0005] Batteries consist of single cells. During the battery manufacturing process, welding equipment is typically used to weld the electrode terminals of the single cells to the current busbar. This welding equipment typically includes a clamping assembly, which is used to clamp and secure the electrode terminals of multiple battery cells to the current busbar to improve the welding effect.

[0006] Because batteries of different capacities have different numbers of cells and different cell arrangements, the compression assembly needs to be replaced when manufacturing batteries of different capacities. However, traditional compression assembly replacement methods are very complicated and inefficient, hindering battery production efficiency.

[0007] Summary of the Invention

[0008] One of the purposes of the embodiments of the present application is to provide a welding device, a battery production line and a conversion method, aiming to solve the technical problem of low replacement efficiency of the clamping assembly of the welding device in the related art.

[0009] To solve the above technical problems, the technical solution adopted in the embodiment of the present application is: providing a welding device, comprising:

[0010] base;

[0011] The pressing assembly includes a mounting seat and a welding pressure head, wherein the welding pressure head is mounted on the mounting seat;

[0012] The locking mechanism is installed on the base, and is used to lock or release the mounting base.

[0013] The beneficial effect of the welding device provided by the embodiment of the present application is that the locking mechanism of the welding device provided by the embodiment of the present application is used to lock or release the mounting seat. When the clamping assembly needs to be replaced, the locking mechanism automatically releases the mounting seat. At this time, the clamping assembly can be removed from the locking mechanism. Subsequently, the locking mechanism and the other clamping assembly are moved toward each other to the docking position, and the locking mechanism automatically locks the clamping assembly, thereby completing the replacement operation of the clamping assembly. The operation process is simple and convenient, effectively improving the replacement efficiency of the clamping assembly, thereby effectively improving the production efficiency of the battery.

[0014] In some embodiments of the present application, the locking mechanism includes an inflatable shaft, which is connected to an external air source. When the inflatable shaft is in an expanded state, the inflatable shaft locks the mounting seat, and when the inflatable shaft is in a contracted state, the inflatable shaft releases the mounting seat.

[0015] By adopting the above technical solution, when the clamping assembly needs to be replaced, the inflatable shaft can be evacuated by an external air source to shrink the inflatable shaft. At this time, the clamping assembly can be removed from the locking mechanism. Subsequently, the locking mechanism and the other clamping assembly are moved toward each other to the docking position, and the external air source supplies air to the inflatable shaft to expand the inflatable shaft and lock the clamping assembly, thereby completing the replacement operation of the clamping assembly. The operation process is simple and convenient, effectively improving the replacement efficiency of the clamping assembly, thereby effectively improving the production efficiency of the battery.

[0016] In some embodiments of the present application, the locking mechanism further includes an air guide seat, which is mounted on the base, and the inflatable shaft is connected to an external air source through the air guide seat.

[0017] By adopting the above technical solution, it is convenient to connect the inflatable shaft with the external air source.

[0018] In some embodiments of the present application, the mounting seat includes a seat body and an axis joint installed on the seat body. When the inflatable shaft is in an expanded state, the inflatable shaft locks the axis joint. When the inflatable shaft is in a contracted state, the inflatable shaft releases the axis joint.

[0019] By adopting the above technical solution, it is convenient for the locking mechanism to lock or release the pressing assembly.

[0020] In some embodiments of the present application, the welding pressure head has a welding space and a first shielding gas channel connected to the welding space, the mounting base has a second shielding gas channel connected to the first shielding gas channel, and the base has a third shielding gas channel connected to an external shielding gas source. When the locking mechanism locks the mounting base, the third shielding gas channel is connected to the second shielding gas channel so that the third shielding gas channel is connected to the second shielding gas channel.

[0021] By adopting the above technical solution, the clamping assembly is integrated with the protective gas delivery structure. When the locking mechanism locks the mounting seat, the third protective gas channel can be connected to the second protective gas channel without the need for manual pipeline connection operations, thereby further improving the replacement efficiency of the clamping assembly and further improving the production efficiency of the battery.

[0022] In some embodiments of the present application, the welding device also includes a first joint, which is arranged in one of the second shielding gas channel and the third shielding gas channel. When the locking mechanism locks the mounting seat, the first joint is inserted into the other of the second shielding gas channel and the third shielding gas channel to make the second shielding gas channel and the third shielding gas channel relative to each other.

[0023] By adopting the above technical solution, when the locking mechanism locks the mounting seat, the first connector is plugged into the second protective gas channel or the third protective gas channel, which facilitates the docking of the third protective gas channel with the second protective gas channel, and effectively improves the stability of the connection between the third protective gas channel and the second protective gas channel.

[0024] In some embodiments of the present application, the welding device also includes a first seal; the first seal is arranged on the base and is arranged around the port of the third shielding gas channel close to the second shielding gas channel; or, the first seal is arranged on the mounting seat and is arranged around the port of the second shielding gas channel close to the third shielding gas channel; when the locking mechanism locks the mounting seat, the base and the mounting seat cooperate to clamp the first seal along the locking direction of the locking mechanism.

[0025] By adopting the above technical solution, since the first sealing ring is arranged on the port of the third protective gas channel close to the second protective gas channel or the port of the second protective gas channel close to the third protective gas channel, when the locking mechanism locks the mounting seat, the base and the mounting seat cooperate to clamp the first sealing member along the locking direction of the locking mechanism, which can effectively reduce the wear of the first sealing member during the process of locking or releasing the mounting seat by the locking mechanism, thereby effectively reducing the risk of sealing failure of the first sealing member.

[0026] In some embodiments of the present application, the clamping assembly also includes a shielding gas diverter seat installed on the mounting seat, the shielding gas diverter seat having a main air channel connected to the second shielding gas channel and multiple branch air channels connected to the main air channel. The number of welding pressure heads is multiple, and the multiple branch air channels are connected to the first shielding gas channels of the multiple welding pressure heads one by one.

[0027] By adopting the above technical solution, the shielding gas diverter seat can deliver shielding gas to multiple welding pressure heads, effectively reducing the number of second shielding gas channels, thereby effectively simplifying the structure of the clamping assembly.

[0028] In some embodiments of the present application, the compression assembly further includes a first pipe, which is connected between the branch air channel and the first shielding gas channel to connect the branch air channel and the first shielding gas channel.

[0029] By adopting the above technical solution, it is convenient to connect the branch airway with the first protective gas channel.

[0030] In some embodiments of the present application, the compression assembly also includes a second connector and a third connector, the second connector is connected to the branch air channel, the third connector is connected to the first protective gas channel, one end of the first pipe is connected to the second connector, and the other end of the first pipe is connected to the third connector.

[0031] By adopting the above technical solution, it is convenient to connect the branch airway with the first shielding gas channel, and the stability of the connection between the branch airway and the first shielding gas channel is effectively improved.

[0032] In some embodiments of the present application, the welding pressure head has a welding space and a first dust suction channel connected to the welding space, the mounting base has a second dust suction channel connected to the first dust suction channel, and the base has a third dust suction channel connected to the external vacuum device. When the locking mechanism locks the mounting base, the third dust suction channel is connected to the second dust suction channel to connect the third dust suction channel to the second dust suction channel.

[0033] By adopting the above technical solution, the clamping assembly is integrated with the dust suction structure. When the locking mechanism locks the mounting seat, the third dust suction channel can be connected to the second dust suction channel without the need for manual pipe connection operations, thereby further improving the replacement efficiency of the clamping assembly and further improving the production efficiency of the battery.

[0034] In some embodiments of the present application, the welding device also includes a second seal; the second seal is arranged on the base and is arranged around the port of the third dust suction channel close to the second dust suction channel; or, the second seal is arranged on the mounting seat and is arranged around the port of the second dust suction channel close to the third dust suction channel; when the locking mechanism locks the mounting seat, the base and the mounting seat cooperate to clamp the second seal along the locking direction of the locking mechanism.

[0035] By adopting the above technical solution, since the second sealing ring is arranged on the port of the third dust suction channel close to the second dust suction channel or the port of the second dust suction channel close to the third dust suction channel, when the locking mechanism locks the mounting seat, the base and the mounting seat cooperate to clamp the second sealing member along the locking direction of the locking mechanism, which can effectively reduce the wear of the second sealing member in the process of locking or releasing the mounting seat by the locking mechanism, thereby effectively reducing the risk of sealing failure of the second sealing member.

[0036] In some embodiments of the present application, the number of welding pressure heads and the number of second dust suction channels are multiple, and the first dust suction channels of the multiple welding pressure heads are connected to the multiple second dust suction channels one by one. When the locking mechanism locks the mounting seat, the third dust suction channel is connected to the multiple second dust suction channels.

[0037] By adopting the above technical solution, when the locking mechanism locks the mounting seat, the third dust suction channel can be connected to multiple second dust suction channels, effectively reducing the number of third dust suction channels, thereby effectively simplifying the structure of the base.

[0038] In some embodiments of the present application, the pressing assembly further includes a second pipe, which is connected between the second dust suction channel and the first dust suction channel to connect the second dust suction channel with the first dust suction channel.

[0039] By adopting the above technical solution, it is convenient to connect the second dust suction channel with the first dust suction channel, and the stability of the connection between the second dust suction channel and the first dust suction channel is effectively improved.

[0040] In some embodiments of the present application, the welding device further includes a dust suction pipe, and the third dust suction channel is connected to an external exhaust device through the dust suction pipe.

[0041] By adopting the above technical solution, it is convenient to connect the third dust suction channel with the external air extraction device.

[0042] In some embodiments of the present application, the welding device further includes a transporting mechanism, which is used to transport the pressing assembly to the locking mechanism or to transport the pressing assembly away from the locking mechanism.

[0043] By adopting the above technical solution, the transportation of the compression assembly is facilitated, the replacement efficiency of the compression assembly is further improved, and thus the production efficiency of the battery is further improved.

[0044] In some embodiments of the present application, the welding device also includes a driving mechanism. When the locking mechanism and the clamping assembly are in a released state, the driving mechanism is used to drive the base to move along a first direction toward the clamping assembly to drive the locking mechanism to move to the clamping assembly and lock the clamping assembly. When the locking mechanism and the clamping assembly are in a locked state, the driving mechanism is used to drive the base to move back and forth along the first direction to drive the clamping assembly to move toward or away from the part to be welded.

[0045] By adopting the above technical solution, the driving mechanism can not only drive the base to move along the first direction toward the clamping assembly to drive the locking mechanism to move to the clamping assembly and lock the clamping assembly, but also drive the base to move back and forth along the first direction to enable the clamping assembly to clamp or release the component to be welded, effectively reducing the number of driving components set in the welding device, thereby effectively simplifying the structure of the welding device.

[0046] In some embodiments of the present application, a limiting structure is provided between the base and the mounting seat, the limiting structure including a limiting portion and a limiting opening, the limiting portion is provided in one of the base and the mounting seat, the limiting opening is provided in the other of the base and the mounting seat, and the limiting portion can be inserted into the limiting opening along a first direction.

[0047] By adopting the above technical solution, the risk of relative position deviation between the locking mechanism and the clamping assembly during the process of locking or releasing the clamping assembly by the locking mechanism is effectively reduced, so that the locking mechanism and the clamping assembly can be stably docked.

[0048] In some embodiments of the present application, the first direction is the gravity direction of the pressing assembly.

[0049] By adopting the above technical solution, the locking mechanism can automatically lock or release the pressing assembly during the process of the pressing assembly rising or falling, which makes it easier for the locking mechanism to lock or release the pressing assembly.

[0050] In some embodiments of the present application, the clamping assembly further includes an elastic member, which is elastically connected between the mounting seat and the welding pressure head.

[0051] By adopting the above technical solution, the pressure exerted by the welding pressure head on the parts to be welded is effectively buffered, thereby effectively reducing the risk of damage to the parts to be welded due to excessive pressure.

[0052] An embodiment of the present application also provides a battery production line, comprising a conveying device and a welding device as described in any of the above embodiments, wherein the conveying device is used to convey the battery parts to be welded to the welding device, and the welding device is used to weld the parts to be welded.

[0053] The beneficial effect of the battery production line provided by the embodiment of the present application is that the battery production line provided by the embodiment of the present application effectively improves the production efficiency of the battery due to the use of the welding device described in any of the above embodiments.

[0054] The present application also provides a replacement method for replacing the clamping assembly of the welding device described in any of the above embodiments. The replacement method includes the following steps:

[0055] Place the target model of the clamping assembly at the replacement station;

[0056] The locking mechanism and the clamping assembly of the original model are moved to the replacement station synchronously;

[0057] The locking mechanism releases the original model's clamping assembly so that the original model's clamping assembly is disengaged from the locking mechanism;

[0058] The locking mechanism locks the clamping assembly of the target model, and the locking mechanism and the clamping assembly of the target model move to an initial position synchronously.

[0059] The beneficial effect of the type-changing method provided in the embodiment of the present application is that the locking mechanism in the type-changing method provided in the embodiment of the present application can automatically release the clamping assembly of the original model, and the clamping assembly of the original model can be removed from the locking mechanism. Then, the locking mechanism can automatically lock the clamping assembly of the target model, thereby completing the replacement operation of the clamping assembly. The operation process is simple and convenient, effectively improving the replacement efficiency of the clamping assembly, thereby effectively improving the production efficiency of the battery.

[0060] The present application also provides a replacement method for replacing the clamping assembly of the welding device described in any of the above embodiments. The replacement method includes the following steps:

[0061] The target model of the pressing component is placed on the transport mechanism, and the transport mechanism transports the target model of the pressing component to the replacement station;

[0062] The locking mechanism and the clamping assembly of the original model are moved to the replacement station synchronously;

[0063] The locking mechanism releases the original model's clamping assembly so that the original model's clamping assembly is placed on the carrier mechanism;

[0064] The carrier mechanism moves so that the clamping assembly of the target model is aligned with the locking mechanism, the locking mechanism locks the clamping assembly of the target model, and the locking mechanism and the clamping assembly of the target model move synchronously to the initial position;

[0065] The carrier transports the old model's hold-down components to the storage area.

[0066] The beneficial effect of the type-changing method provided in the embodiment of the present application is that: in the type-changing method provided in the embodiment of the present application, the carrying mechanism can transport the clamping assembly of the target model to the replacement station, the locking mechanism can automatically release the clamping assembly of the original model so that the clamping assembly of the original model is placed on the carrying mechanism, and the carrying mechanism moves so that the clamping assembly of the target model is aligned with the locking mechanism, and the locking mechanism can automatically lock the clamping assembly of the target model, thereby completing the replacement operation of the clamping assembly. The operation process is simple and convenient, effectively improving the replacement efficiency of the clamping assembly, thereby effectively improving the production efficiency of the battery.

[0067] The present application also provides a replacement method for replacing the clamping assembly of the welding device described in any of the above embodiments. The replacement method includes the following steps:

[0068] Place the target model of the clamping assembly at the replacement station;

[0069] The driving mechanism drives the locking mechanism and the original model's clamping assembly to move synchronously to the replacement station;

[0070] The locking mechanism releases the original model's clamping assembly so that the original model's clamping assembly is disengaged from the locking mechanism;

[0071] The locking mechanism locks the clamping assembly of the target model, and the driving mechanism drives the locking mechanism and the clamping assembly of the target model to move synchronously to an initial position.

[0072] The beneficial effect of the type-changing method provided in the embodiment of the present application is that: in the type-changing method provided in the embodiment of the present application, the driving mechanism can drive the locking mechanism to move back and forth between the initial position and the replacement station. When the locking mechanism moves to the replacement station, the locking mechanism can automatically release the clamping assembly of the original model, and the clamping assembly of the original model can be removed from the locking mechanism. Subsequently, the locking mechanism can automatically lock the clamping assembly of the target model, thereby completing the replacement operation of the clamping assembly. The operation process is simple and convenient, effectively improving the replacement efficiency of the clamping assembly, thereby effectively improving the production efficiency of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0074] FIG1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

[0075] FIG2 is a schematic diagram of an exploded structure of a battery provided in an embodiment of the present application;

[0076] FIG3 is a schematic structural diagram of a welding device provided in an embodiment of the present application;

[0077] FIG4 is a schematic diagram of the exploded structure of the welding device shown in FIG3 ;

[0078] FIG5 is a side structural schematic diagram of the welding device shown in FIG3 ;

[0079] FIG6 is a schematic cross-sectional view of the welding device shown in FIG5 along line AA;

[0080] FIG7 is an enlarged structural diagram of position B of the welding device shown in FIG6;

[0081] FIG8 is a schematic diagram of the front structure of the welding device shown in FIG3;

[0082] FIG9 is a schematic cross-sectional view of the welding device shown in FIG8 along line CC;

[0083] FIG10 is an enlarged structural diagram of position E of the welding device shown in FIG9 ;

[0084] FIG11 is a schematic cross-sectional view of the welding device shown in FIG8 along line DD.

[0085] Description of reference numerals:

[0086] 1. Battery; 11. Box; 111. First part; 112. Second part; 12. Battery cell;

[0087] 2. Controller;

[0088] 3. Motor;

[0089] 1000. Welding equipment;

[0090] 100, base; 110, third protective gas channel; 120, third dust suction channel; 130, first plate; 140, second plate; 150, reinforcement;

[0091] 200, pressing assembly; 210, mounting seat; 211, seat body; 2111, second shielding gas channel; 2112, second dust suction channel; 2113, welding channel; 212, shaft joint; 213, connecting piece; 220, welding pressure head; 221, welding space; 222, first shielding gas channel; 223, first dust suction channel; 230, shielding gas diverter seat; 231, main gas channel; 232, branch gas channel; 240, second joint; 250, third joint; 260, second pipe fitting; 270, elastic member;

[0092] 300, locking mechanism; 310, air shaft; 320, air guide seat;

[0093] 400, first connector;

[0094] 500, first sealing member;

[0095] 600, second sealing member;

[0096] 700, vacuum hose;

[0097] 800, driving mechanism;

[0098] 900, rack; 910, frame; 920, slide rail; 930, slider. DETAILED DESCRIPTION

[0099] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0100] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0101] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of the present application shown in the drawings are for illustrative purposes only and should not constitute any limitation on the present application.

[0102] A battery consists of cells, the smallest unit for storing electrical energy. Multiple cells can be arranged in an array within the battery. The electrode terminals and busbars of the cells are welded together using a welding device to achieve electrical connection between the cells.

[0103] In the related art, in order to improve the welding effect between the electrode terminals of the battery cells and the busbar, it is usually necessary to use a clamping assembly in the welding device to clamp and fix the electrode terminals of the battery cells to the busbar. Since the number of battery cells in batteries of different capacities is different, the arrangement of the battery cells is also different. Therefore, when manufacturing batteries of different capacities, the clamping assembly needs to be replaced. At present, the clamping assembly is installed on the base of the welding device by fasteners such as bolts, screws, and pins. When the clamping assembly needs to be replaced, it is necessary to manually remove multiple fasteners one by one to remove the clamping assembly from the base. It is also necessary to dock another clamping assembly with the base, and then connect multiple fasteners one by one between the clamping assembly and the base to complete the replacement operation of the clamping assembly. The entire replacement operation process is very cumbersome, time-consuming and labor-intensive, and the replacement efficiency is low, resulting in a significant decrease in battery production efficiency.

[0104] In order to improve the replacement efficiency of the clamping assembly, the locking mechanism of the welding device provided in the embodiment of the present application is used to lock or release the mounting seat. When the clamping assembly needs to be replaced, the locking mechanism automatically releases the mounting seat. At this time, the clamping assembly can be removed from the locking mechanism. Subsequently, the locking mechanism and the other clamping assembly are moved toward each other to the docking position, and the locking mechanism automatically locks the clamping assembly, thereby completing the replacement operation of the clamping assembly. The operation process is simple and convenient, which effectively improves the replacement efficiency of the clamping assembly, thereby effectively improving the production efficiency of the battery.

[0105] The welding device disclosed in the embodiments of the present application can be applied to the welding process of batteries. For example, the welding device is used to weld the electrode terminals of battery cells to the busbars in the battery. Another example is the welding device is used to weld the poles of battery modules to the busbars in the battery. Of course, the welding device disclosed in the embodiments of the present application can also be applied to the welding processes of other workpieces, such as the welding process of plates and support beams.

[0106] The battery disclosed in the embodiments of the present application can be applied to electrical equipment that uses the battery as a power source, wherein the electrical equipment may be, but is not limited to, vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0107] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0108] Please refer to Figure 1, which is a schematic diagram of the structure of the vehicle provided in an embodiment of the present application. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1 is provided inside the vehicle, and the battery 1 can be provided at the bottom, head or tail of the vehicle. The battery 1 can be used to power the vehicle, for example, the battery 1 can be used as an operating power source for the vehicle. The vehicle can also include a controller 2 and a motor 3, and the controller 2 is used to control the battery 1 to power the motor 3, for example, for starting, navigating and operating power requirements during driving of the vehicle.

[0109] In some embodiments of the present application, the battery 1 can serve not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0110] Please refer to Figure 2, which is an exploded schematic diagram of the battery 1 provided in an embodiment of the present application. The battery 1 includes a housing 11 and a battery cell 12, and the battery cell 12 is accommodated in the housing 11. The housing 11 is used to provide a storage space for the battery cell 12, and the housing 11 can adopt a variety of structures. In some embodiments, the housing 11 may include a first part 111 and a second part 112, and the first part 111 and the second part 112 cover each other, and the first part 111 and the second part 112 jointly define a storage space for accommodating the battery cell 12. The second part 112 can be a hollow structure with one end open, and the first part 111 can be a plate-shaped structure, and the first part 111 covers the open side of the second part 112, so that the first part 111 and the second part 112 jointly define a storage space; the first part 111 and the second part 112 can also be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the box body 11 formed by the first part 111 and the second part 112 can be in various shapes, such as a cylinder, a cuboid, etc.

[0111] In some embodiments, the box 11 can be used as a part of the chassis structure of the vehicle. For example, part of the box 11 can become at least a part of the floor of the vehicle, or part of the box 11 can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0112] In the battery 1, there can be multiple battery cells 12, and the multiple battery cells 12 can be connected in series, in parallel, or in a mixed connection. Mixed connection means that the multiple battery cells 12 are connected in series and in parallel. The multiple battery cells 12 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 12 is accommodated in the case 11. Of course, the battery 1 can also be a battery module composed of multiple battery cells 12 connected in series, in parallel, or in a mixed connection, and the multiple battery modules are then connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the case 11. The battery 1 can also include other functional components. For example, the battery 1 can also include a busbar, which is welded to the electrode terminals of the multiple battery cells 12 to achieve electrical connection between the multiple battery cells 12.

[0113] Each battery cell 12 may be a secondary battery or a primary battery. A secondary battery refers to a battery cell 12 that can be recharged to activate the active material after discharge and continue to be used. A primary battery refers to a battery cell 12 that cannot be recharged to activate the active material after the battery cell 12's power is exhausted and continues to be used. The battery cell 12 may also be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., but is not limited thereto. The battery cell 12 may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell, or a battery cell 12 of another shape. Prismatic battery cells include square-shell battery cells, blade-shaped battery cells, and polygonal prismatic batteries. Polygonal prismatic batteries, for example, hexagonal prismatic batteries, are not particularly limited in this application.

[0114] Of course, in some embodiments, the battery 1 may not include the box body 11 , but instead a plurality of battery cells 12 are electrically connected and formed into a whole through necessary fixing structures and then assembled into an electrical device.

[0115] In order to illustrate the technical solution provided by this application, a detailed description is given below with reference to specific drawings and embodiments.

[0116] First, referring to Figures 3 and 4 , an embodiment of the present application provides a welding device 1000 comprising a base 100, a clamping assembly 200, and a locking mechanism 300. The clamping assembly 200 comprises a mounting base 210 and a welding ram 220, which is mounted on the mounting base 210. The locking mechanism 300 is mounted on the base 100 and is used to lock or release the mounting base 210.

[0117] The base 100 is a component for providing an installation environment for the various functional components in the welding device 1000. The material of the base 100 can be, but is not limited to, aluminum, aluminum alloy, copper, iron, steel, plastic, etc. The base 100 can be an integrally formed component or a split component. In some embodiments, the base 100 includes a first plate 130, a second plate 140, and a reinforcement 150. The first plate 130 and the second plate 140 are arranged at an angle to each other. For example, the first plate 130 and the second plate 140 are perpendicular to each other. The reinforcement 150 has a first connecting surface and a second connecting surface arranged at an angle to each other. The first connecting surface is connected to the first plate 130, and the second connecting surface is connected to the second plate 140. The locking mechanism 300 can be installed on the first plate 130.

[0118] The clamping assembly 200 is a mechanism that directly contacts the parts to be welded (such as the busbar or the electrode terminals of the battery cell 12) and applies pressure to the parts to be welded. Among them, the mounting seat 210 is a component for providing an installation environment for the various functional components in the clamping assembly 200. The mounting seat 210 can be an integrally formed component or a split component. The welding pressure head 220 is a component for pressing against the parts to be welded. The number of welding pressure heads 220 can be multiple, and multiple welding pressure heads 220 are installed on the mounting seat 210. When the welding device 1000 welds the electrode terminals and busbars of the battery cell 12, the multiple welding pressure heads 220 are arranged in a one-to-one correspondence with the electrode terminals of the multiple battery cells 12. In other words, the arrangement structure of the multiple welding pressure heads 220 can be determined according to the arrangement structure of the multiple battery cells 12 in the battery 1. The connection method between the welding pressure head 220 and the mounting seat 210 can be, but is not limited to, fastening connection, welding, bonding, etc. The welding pressure head 220 can be made of high-temperature resistant materials, and the high-temperature resistant materials can be but are not limited to copper, aluminum, aluminum alloy, iron, steel, etc.

[0119] In some embodiments, a welding space 221 is formed inside the welding ram 220, and a welding channel 2113 is defined on the mounting base 210. The welding space 221 extends from the welding channel 2113 to the component to be welded. The welding device 1000 further includes a welding head (not shown). When the welding ram 220 is pressed against the component to be welded, the welding head passes through the welding channel 2113 and the welding space 221 to weld the component to be welded. The welding head may be, but is not limited to, a laser welding head, a brazing welding head, an arc welding head, or the like.

[0120] The locking mechanism 300 is used to lock or release the compression assembly 200. It is understood that the locking and releasing actions of the locking mechanism 300 are powered by a power source, without requiring human intervention. The power source may include, but is not limited to, pneumatic power, hydraulic power, or electrical power. The locking mechanism 300 is mounted on the base 100, and the connection between the locking mechanism 300 and the base 100 may be, but is not limited to, fastening, welding, or bonding.

[0121] The locking mechanism 300 of the welding device 1000 provided in the embodiment of the present application is used to lock or release the mounting seat 210. When the clamping assembly 200 needs to be replaced, the locking mechanism 300 automatically releases the mounting seat 210. At this time, the clamping assembly 200 can be removed from the locking mechanism 300. Subsequently, the locking mechanism 300 and the other clamping assembly 200 are moved toward each other to the docking position, and the locking mechanism 300 automatically locks the clamping assembly 200, thereby completing the replacement operation of the clamping assembly 200. The operation process is simple and convenient, which effectively improves the replacement efficiency of the clamping assembly 200, thereby effectively improving the production efficiency of the battery 1.

[0122] In some embodiments of the present application, please refer to Figures 5 to 7. The locking mechanism 300 includes an inflatable shaft 310, which is connected to an external air source. When the inflatable shaft 310 is in an expanded state, the inflatable shaft 310 locks the mounting seat 210. When the inflatable shaft 310 is in a contracted state, the inflatable shaft 310 releases the mounting seat 210.

[0123] The pneumatic shaft 310 is a component used to lock or release the compression assembly 200. It can be understood that the pneumatic shaft 310 is driven by an external air source to switch between an expanded state and a contracted state. In other words, in this embodiment, the locking mechanism 300 is a pneumatic shaft locking mechanism.

[0124] In some embodiments, the inflatable shaft 310 includes a shaft body and a telescopic part. An air delivery channel is formed inside the shaft body. A telescopic hole is opened on the wall of the shaft body. The telescopic hole is connected to the air delivery channel. The telescopic part is arranged in the telescopic hole. When an external air source evacuates the air delivery channel, the telescopic part retracts into the telescopic hole. At this time, the telescopic part is separated from the clamping assembly 200, and the locking mechanism 300 and the clamping assembly 200 are in a released state. When an external air source supplies air to the air delivery channel, the telescopic part extends out of the telescopic hole. At this time, the telescopic part is engaged with the clamping assembly 200, and the locking mechanism 300 and the clamping assembly 200 are in a locked state.

[0125] By adopting the above technical solution, when the clamping assembly 200 needs to be replaced, the inflatable shaft 310 can be evacuated by an external air source to shrink the inflatable shaft 310. At this time, the clamping assembly 200 can be removed from the locking mechanism 300. Subsequently, the locking mechanism 300 and the other clamping assembly 200 are moved toward each other to the docking position, and the external air source supplies air to the inflatable shaft 310 to expand the inflatable shaft 310 and lock the clamping assembly 200, thereby completing the replacement operation of the clamping assembly 200. The operation process is simple and convenient, which effectively improves the replacement efficiency of the clamping assembly 200, thereby effectively improving the production efficiency of the battery 1.

[0126] In some embodiments of the present application, please refer to Figures 5 to 7 , the locking mechanism 300 further includes an air guide seat 320 , which is mounted on the base 100 , and the inflatable shaft 310 is connected to an external air source through the air guide seat 320 .

[0127] The air guide seat 320 is a component used to connect the inflatable shaft 310 and the external air source. The air guide seat 320 is installed on the base 100, and the inflatable shaft 310 is connected to the air guide seat 320. The connection method between the air guide seat 320 and the base 100 can be, but is not limited to, fastening connection, welding, bonding, etc. In some embodiments, an air guide channel is formed inside the air guide seat 320, and the locking mechanism 300 also includes a fourth joint. The inflatable shaft 310 is sealed to one end of the air guide channel of the air guide seat 320 so that the above-mentioned air transmission channel is connected to the air guide channel of the air guide seat 320. The fourth joint is sealed to the end of the air guide channel away from the inflatable shaft 310, and the air guide seat 320 is connected to the external air source through the fourth joint pipeline. It can be understood that a fourth connecting channel is formed inside the fourth joint. When the air guide seat 320 is connected to the external air source through the fourth joint pipeline, the air guide channel of the air guide seat 320 is connected to the external air source through the fourth connecting channel of the fourth joint.

[0128] By adopting the above technical solution, it is convenient to connect the inflatable shaft 310 to an external air source.

[0129] Of course, in other embodiments, the locking mechanism 300 may also be other locking mechanisms that can realize automatic locking and automatic releasing functions, such as a worm gear locking mechanism, a rotary buckle locking mechanism, etc.

[0130] In some embodiments of the present application, please refer to Figures 4 to 7. The mounting seat 210 includes a seat body 211 and an axial joint 212 installed on the seat body 211. When the inflatable shaft 310 is in an expanded state, the inflatable shaft 310 locks the axial joint 212. When the inflatable shaft 310 is in a contracted state, the inflatable shaft 310 releases the axial joint 212.

[0131] The base 211 is the main component of the mounting base 210 and is used to provide a mounting environment for the various functional components of the compression assembly 200. The material of the base 211 can be, but is not limited to, aluminum, aluminum alloy, copper, iron, steel, plastic, etc. In some embodiments, the base 211 is made of fiberglass.

[0132] The shaft joint 212 is a component used to connect the pneumatic shaft 310 to the locking mechanism 300. In some embodiments, the base 211 is a plate-shaped structure, and the shaft joint 212 is installed on the plate surface of the base 211 facing the locking mechanism 300, and the welding pressure head 220 is installed on the plate surface of the base 211 facing away from the locking mechanism 300. The connection method between the shaft joint 212 and the base 211 can be, but is not limited to, fastening connection, welding, bonding, etc. In some embodiments, the shaft joint 212 is provided with a plug-in hole, and the hole wall of the plug-in hole is provided with a card slot. When the locking mechanism 300 and the clamping assembly 200 are in a locked state, the shaft body of the pneumatic shaft 310 is inserted into the plug-in hole, and the telescopic part of the pneumatic shaft 310 is clamped in the card slot.

[0133] By adopting the above technical solution, it is convenient for the locking mechanism 300 to lock or release the pressing assembly 200.

[0134] In some embodiments of the present application, please refer to Figures 8 to 10 together. The welding pressure head 220 has a first protective gas channel 222 connected to the above-mentioned welding space 221, the mounting base 210 has a second protective gas channel 2111 connected to the first protective gas channel 222, and the base 100 has a third protective gas channel 110 connected to an external protective gas source. When the locking mechanism 300 locks the mounting base 210, the third protective gas channel 110 is connected to the second protective gas channel 2111 to connect the third protective gas channel 110 to the second protective gas channel 2111.

[0135] In the related art, during the welding process of the components to be welded, it is generally necessary to introduce a shielding gas into the welding area of ​​the components to be welded. The shielding gas is used to protect the molten metal droplets. For example, the shielding gas is used to prevent oxidation of the solidifying molten weld. It also serves to block impurities and moisture in the air, thereby improving the corrosion resistance and durability of the weld of the components to be welded. The shielding gas can be an inert gas, such as helium and argon, or a reactive gas, such as carbon dioxide, oxygen, nitrogen, and hydrogen.

[0136] When the locking mechanism 300 locks the mounting base 210, the outlet port of the third protective gas channel 110 is arranged relative to the inlet port of the second protective gas channel 2111, so that the third protective gas channel 110 is connected to the second protective gas channel 2111. At this time, the protective gas can enter the welding space 221 of the welding pressure head 220 from the external protective gas source through the third protective gas channel 110, the second protective gas channel 2111 and the first protective gas channel 222 in sequence.

[0137] In some embodiments, the welding device 1000 further includes a fifth joint, which is sealedly connected to an end of the third shielding gas channel 110 away from the second shielding gas channel 2111. The third shielding gas channel 110 is connected to an external shielding gas source via the fifth joint pipeline. It is understood that a fifth connecting channel is formed within the fifth joint. When the third shielding gas channel 110 is connected to the external shielding gas source via the fifth joint pipeline, the third shielding gas channel 110 communicates with the external shielding gas source via the fifth connecting channel of the fifth joint.

[0138] By adopting the above-mentioned technical solution, the clamping assembly 200 is integrated with the protective gas delivery structure. When the locking mechanism 300 locks the mounting seat 210, the third protective gas channel 110 can be connected to the second protective gas channel 2111 without the need for manual pipeline connection operations, thereby further improving the replacement efficiency of the clamping assembly 200 and further improving the production efficiency of the battery 1.

[0139] In some embodiments of the present application, please refer to Figures 8 to 10 together. The welding device 1000 also includes a first connector 400, which is arranged in one of the second shielding gas channel 2111 and the third shielding gas channel 110. When the locking mechanism 300 locks the mounting base 210, the first connector 400 is inserted into the other of the second shielding gas channel 2111 and the third shielding gas channel 110 to make the second shielding gas channel 2111 and the third shielding gas channel 110 connected to each other.

[0140] The first connector 400 is a component used to connect the second shielding gas channel 2111 and the third shielding gas channel 110. As can be understood, a first connecting channel is formed inside the first connector 400. When the locking mechanism 300 locks the mounting base 210, the second shielding gas channel 2111 and the third shielding gas channel 110 are connected through the first connecting channel.

[0141] In some embodiments, the first connector 400 is arranged at the gas outlet port of the third protective gas channel 110. When the locking mechanism 300 locks the mounting base 210, the first connector 400 is inserted into the second protective gas channel 2111 so that the second protective gas channel 2111 is connected to the third protective gas channel 110.

[0142] In other embodiments, the first connector 400 is arranged at the air inlet port of the second protective gas channel 2111. When the locking mechanism 300 locks the mounting base 210, the first connector 400 is inserted into the third protective gas channel 110 to connect the second protective gas channel 2111 with the third protective gas channel 110.

[0143] By adopting the above technical solution, when the locking mechanism 300 locks the mounting seat 210, the first connector 400 is plugged into the second protective gas channel 2111 or the third protective gas channel 110, which facilitates the docking of the third protective gas channel 110 with the second protective gas channel 2111, thereby effectively improving the stability of the connection between the third protective gas channel 110 and the second protective gas channel 2111.

[0144] In some embodiments of the present application, please refer to Figures 8 to 10 together. The welding device 1000 also includes a first seal 500. The first seal 500 is arranged on the base 100 and is arranged around the port of the third protective gas channel 110 close to the second protective gas channel 2111, or the first seal 500 is arranged on the mounting seat 210 and is arranged around the port of the second protective gas channel 2111 close to the third protective gas channel 110. When the locking mechanism 300 locks the mounting seat 210, the base 100 and the mounting seat 210 cooperate to clamp the first seal 500 along the locking direction of the locking mechanism 300.

[0145] The first seal 500 is a component used to seal the junction between the second shielding gas channel 2111 and the third shielding gas channel 110. The first seal 500 can have an annular structure. When the locking mechanism 300 locks the mounting seat 210, the base 100 and the mounting seat 210 cooperate to clamp the first seal 500 along the locking direction of the locking mechanism 300. That is, along the locking direction of the locking mechanism 300, the base 100 presses against one end of the first seal 500, and the mounting seat 210 presses against the other end of the first seal 500, so that the inner annular space of the first seal 500 constitutes a sealed space. The junction between the second shielding gas channel 2111 and the third shielding gas channel 110 is located within the inner annular space of the first seal 500. The first seal 500 is made of a flexible material, which may be, but is not limited to, rubber, silicone, or the like.

[0146] In some embodiments, the first seal 500 is disposed on the base 100 and is arranged around the port of the third protective gas channel 110 close to the second protective gas channel 2111 , that is, the first seal 500 is arranged around the gas outlet port of the third protective gas channel 110 .

[0147] In other embodiments, the first seal 500 is disposed on the mounting seat 210 and is arranged around the port of the second protective gas channel 2111 close to the third protective gas channel 110 , that is, the first seal 500 is arranged around the air inlet port of the second protective gas channel 2111 .

[0148] By adopting the above technical solution, since the first seal 500 is arranged around the port of the third protective gas channel 110 close to the second protective gas channel 2111 or the port of the second protective gas channel 2111 close to the third protective gas channel 110, when the locking mechanism 300 locks the mounting seat 210, the base 100 and the mounting seat 210 cooperate to clamp the first seal 500 along the locking direction of the locking mechanism 300. This can effectively reduce the wear of the first seal 500 in the process of locking or releasing the mounting seat 210 by the locking mechanism 300, thereby effectively reducing the risk of sealing failure of the first seal 500.

[0149] In some embodiments of the present application, please refer to Figures 8 to 10 together. The clamping assembly 200 also includes a shielding gas diverter seat 230 installed on the mounting seat 210. The shielding gas diverter seat 230 has a main gas channel 231 connected to the second shielding gas channel 2111 and multiple branch gas channels 232 connected to the main gas channel 231. The number of welding pressure heads 220 is multiple, and the multiple branch gas channels 232 are connected to the first shielding gas channels 222 of the multiple welding pressure heads 220 in a one-to-one correspondence.

[0150] The shielding gas diverter 230 is a component used to divert the shielding gas in the second shielding gas channel 2111 and deliver it to the first shielding gas channel 222 of the corresponding welding head 220. Specifically, the shielding gas enters the main gas channel 231 from the second shielding gas channel 2111. The shielding gas is then divided into multiple parts through multiple branch gas channels 232 and delivered to the first shielding gas channels 222 of the corresponding welding head 220. In some embodiments, the shielding gas diverter 230 is sealingly connected to the outlet port of the second shielding gas channel 2111, so that the second shielding gas channel 2111 is connected to the main gas channel 231 of the shielding gas diverter 230.

[0151] In some embodiments, the number of the shielding gas diverter seats 230 and the number of the second shielding gas channels 2111 are multiple, and the multiple shielding gas diverter seats 230 and the multiple second shielding gas channels 2111 are arranged in a one-to-one correspondence.

[0152] In other embodiments, there are multiple shielding gas diverter seats 230 , the second shielding gas channel 2111 has multiple gas outlet ports, and the multiple shielding gas diverter seats 230 are arranged in a one-to-one correspondence with the multiple gas outlet ports of the second shielding gas channel 2111 .

[0153] By adopting the above technical solution, the shielding gas diverter seat 230 can deliver shielding gas to multiple welding pressure heads 220, effectively reducing the number of second shielding gas channels 2111, thereby effectively simplifying the structure of the clamping assembly 200.

[0154] In some embodiments of the present application, the clamping assembly 200 further includes a first pipe (not shown), which is connected between the branch air channel 232 and the first shielding gas channel 222 to connect the branch air channel 232 with the first shielding gas channel 222 .

[0155] The first pipe is used to connect the branch airway 232 with the first shielding gas channel 222. Specifically, one end of the first pipe is connected to the outlet port of the branch airway 232, and the other end is connected to the inlet port of the first shielding gas channel 222. It is understood that there may be multiple first pipes, each corresponding to each of the branch airways 232. The first pipe can be a flexible pipe, such as a silicone tube, or a rigid pipe, such as an aluminum tube.

[0156] By adopting the above technical solution, it is convenient to connect the branch air channel 232 with the first protective gas channel 222.

[0157] In some embodiments of the present application, please refer to Figures 8 to 10 together. The clamping assembly 200 also includes a second connector 240 and a third connector 250. The second connector 240 is connected to the branch air duct 232, and the third connector 250 is connected to the first protective gas channel 222. One end of the first pipe is connected to the second connector 240, and the other end of the first pipe is connected to the third connector 250.

[0158] The second connector 240 is used to connect the branch gas channel 232 and the first pipe fitting, and the third connector 250 is used to connect the first shielding gas channel 222 and the first pipe fitting. As can be understood, the second connector 240 has a second connecting channel formed therein, and the third connector 250 has a third connecting channel formed therein. The shielding gas in the branch gas channel 232 can flow into the first shielding gas channel 222 sequentially through the second connecting channel, the first pipe fitting, and the third connecting channel.

[0159] By adopting the above technical solution, it is convenient to connect the branch air channel 232 with the first shielding gas channel 222 , and the stability of the connection between the branch air channel 232 and the first shielding gas channel 222 is effectively improved.

[0160] In some embodiments of the present application, please refer to Figures 8 and 11 together. The welding pressure head 220 has a first dust suction channel 223 connected to the welding space 221, the mounting base 210 has a second dust suction channel 2112 connected to the first dust suction channel 223, and the base 100 has a third dust suction channel 120 connected to the external exhaust device. When the locking mechanism 300 locks the mounting base 210, the third dust suction channel 120 is connected to the second dust suction channel 2112 to connect the third dust suction channel 120 to the second dust suction channel 2112.

[0161] In the related art, during the welding process of the parts to be welded, dust is easily generated in the welding space 221 of the welding head 220, and the dust will have an adverse effect on the welding part of the parts to be welded. Therefore, it is necessary to remove the dust from the welding space 221 of the welding head 220 during the welding process of the parts to be welded.

[0162] When the locking mechanism 300 locks the mounting base 210, the air inlet port of the third dust suction channel 120 and the air outlet port of the second dust suction channel 2112 are arranged opposite to each other, so that the third dust suction channel 120 is connected to the second dust suction channel 2112. At this time, under the action of the external exhaust device, dust can be discharged outward from the welding space 221 through the first dust suction channel 223, the second dust suction channel 2112 and the third dust suction channel 120 in sequence.

[0163] By adopting the above technical solution, the clamping assembly 200 is integrated with the dust suction structure. When the locking mechanism 300 locks the mounting seat 210, the third dust suction channel 120 can be connected to the second dust suction channel 2112 without the need for manual pipe connection operations, thereby further improving the replacement efficiency of the clamping assembly 200 and further improving the production efficiency of the battery 1.

[0164] In some embodiments of the present application, please refer to Figures 8 and 11 together. The welding device 1000 also includes a second seal 600; the second seal 600 is arranged on the base 100 and is arranged around the port of the third dust suction channel 120 close to the second dust suction channel 2112; or, the second seal 600 is arranged on the mounting seat 210 and is arranged around the port of the second dust suction channel 2112 close to the third dust suction channel 120; when the locking mechanism 300 locks the mounting seat 210, the base 100 and the mounting seat 210 cooperate to clamp the second seal 600 along the locking direction of the locking mechanism 300.

[0165] The second seal 600 is a component used to seal the junction between the second dust suction passage 2112 and the third dust suction passage 120. The second seal 600 can have an annular structure. When the locking mechanism 300 locks the mounting seat 210, the base 100 and the mounting seat 210 cooperate to clamp the second seal 600 along the locking direction of the locking mechanism 300. That is, along the locking direction of the locking mechanism 300, the base 100 presses against one end of the second seal 600, and the mounting seat 210 presses against the other end of the second seal 600, so that the inner annular space of the second seal 600 forms a closed space. The junction between the second dust suction passage 2112 and the third dust suction passage 120 is located within the inner annular space of the second seal 600. The second seal 600 is made of a flexible material, which may be, but is not limited to, rubber, silicone, etc.

[0166] In some embodiments, the second sealing member 600 is disposed on the base 100 and is arranged around the port of the third dust suction channel 120 close to the second dust suction channel 2112 , that is, the second sealing member 600 is arranged around the air inlet port of the third dust suction channel 120 .

[0167] In other embodiments, the second sealing member 600 is disposed on the mounting base 210 and is arranged around the port of the second dust suction channel 2112 close to the third dust suction channel 120 , that is, the second sealing member 600 is arranged around the air outlet port of the second dust suction channel 2112 .

[0168] By adopting the above technical solution, since the second seal 600 is arranged around the port of the third dust suction channel 120 close to the second dust suction channel 2112 or the port of the second dust suction channel 2112 close to the third dust suction channel 120, when the locking mechanism 300 locks the mounting seat 210, the base 100 and the mounting seat 210 cooperate to clamp the second seal 600 along the locking direction of the locking mechanism 300, which can effectively reduce the wear of the second seal 600 in the process of locking or releasing the mounting seat 210 by the locking mechanism 300, thereby effectively reducing the risk of sealing failure of the second seal 600.

[0169] In some embodiments of the present application, please refer to Figures 4, 8 and 11 together. The number of welding pressure heads 220 and the number of second dust suction channels 2112 are multiple, and the first dust suction channels 223 of the multiple welding pressure heads 220 are connected to the multiple second dust suction channels 2112 one by one. When the locking mechanism 300 locks the mounting base 210, the third dust suction channel 120 is connected to the multiple second dust suction channels 2112.

[0170] In some embodiments, multiple welding pressure heads 220 and multiple second dust suction channels 2112 are arranged in the same direction. For example, multiple welding pressure heads 220 are arranged in sequence along the X direction shown in Figures 3 and 4. Correspondingly, multiple second dust suction channels 2112 are arranged in sequence along the X direction shown in Figures 3 and 4. The third dust suction channel 120 extends along the arrangement direction of the second dust suction channels 2112. When the locking mechanism 300 locks the mounting base 210, the third dust suction channel 120 is connected to the multiple second dust suction channels 2112.

[0171] In some embodiments, the number of the third dust suction channel 120 is one, and the third dust suction channel 120 is connected to all the second dust suction channels 2112 .

[0172] In other embodiments, there are multiple third dust suction channels 120 , and each third dust suction channel 120 is connected to at least two second dust suction channels 2112 .

[0173] By adopting the above technical solution, when the locking mechanism 300 locks the mounting base 210, the third dust suction channel 120 can be connected to multiple second dust suction channels 2112, effectively reducing the number of third dust suction channels 120, thereby effectively simplifying the structure of the base 100.

[0174] In some embodiments of the present application, referring to FIG. 11 , the pressing assembly 200 further includes a second pipe 260 , which is connected between the second dust suction channel 2112 and the first dust suction channel 223 to connect the second dust suction channel 2112 with the first dust suction channel 223 .

[0175] The second pipe 260 is a component used to connect the second dust suction channel 2112 with the first dust suction channel 223. Specifically, one end of the second pipe 260 is connected to the second dust suction channel 2112, for example, the second pipe 260 is sealed and plugged into the air inlet of the second dust suction channel 2112, and the other end of the second pipe 260 is connected to the first dust suction channel 223, for example, the second pipe 260 is sealed and plugged into the air outlet of the first dust suction channel 223. If there are multiple welding rams 220 and multiple second dust suction channels 2112, there are multiple second pipes 260, and one end of each of the multiple second pipes 260 is connected to the first dust suction channels 223 of each welding ram 220 in a one-to-one correspondence, and the other end of each of the multiple second pipes 260 is connected to the multiple second dust suction channels 2112 in a one-to-one correspondence. The second tube 260 may be a flexible tube, for example, a silicone tube. The second tube 260 may also be a rigid tube, for example, an aluminum tube.

[0176] In some embodiments, in order to facilitate the connection between the first dust suction channel 223 and the second dust suction channel 2112, the second pipe fitting 260 is a bent pipe. For example, the second pipe fitting 260 includes a first pipe section and a second pipe section connected to each other, the first pipe section and the second pipe section are perpendicular to each other, and the end of the first pipe section away from the second pipe section is connected to the second dust suction channel 2112, and the end of the second pipe section away from the first pipe section is connected to the first dust suction channel 223.

[0177] By adopting the above technical solution, it is convenient to connect the second dust suction channel 2112 with the first dust suction channel 223 , and the stability of the connection between the second dust suction channel 2112 and the first dust suction channel 223 is effectively improved.

[0178] In some embodiments of the present application, please refer to FIG. 4 , FIG. 8 and FIG. 11 , the welding device 1000 further includes a dust suction pipe 700 , and the third dust suction channel 120 is connected to an external exhaust device through the dust suction pipe 700 .

[0179] The dust collection tube 700 is a component used to connect the third dust collection channel 120 and the external exhaust device. The dust collection tube 700 is mounted on the base 100 and is located at the end of the third dust collection channel 120 away from the second dust collection channel 2112. The connection between the dust collection tube 700 and the base 100 can be, but is not limited to, fastening, welding, or bonding.

[0180] In some embodiments, in order to seal the gap between the dust suction tube 700 and the base 100, the welding device 1000 also includes a third seal, which is arranged between the dust suction tube 700 and the base 100 and is arranged around the end of the third dust suction channel 120 away from the second dust suction channel 2112.

[0181] By adopting the above technical solution, it is convenient to connect the third dust suction channel 120 with the external air extraction device.

[0182] In some embodiments of the present application, the welding device 1000 further includes a transport mechanism (not shown), which is used to transport the pressing assembly 200 to the locking mechanism 300 or to transport the pressing assembly 200 away from the locking mechanism 300 .

[0183] The carrier mechanism is a mechanism for transporting the pressing assembly 200. The carrier mechanism is configured to move between a replacement station of the welding apparatus 1000 and a storage area for storing the pressing assembly 200.

[0184] In some embodiments, the number of the carrying mechanism can be one, and the carrying mechanism has a first placement station and a second placement station. The first placement station is used to place the original model of the clamping assembly 200, and the second placement station is used to place the target model of the clamping assembly 200. The carrying mechanism transports the target model of the clamping assembly 200 to the replacement station, and the locking mechanism 300 releases the original model of the clamping assembly 200 so that the original model of the clamping assembly 200 is placed on the first placement station. The carrying mechanism continues to move so that the target model of the clamping assembly 200 is aligned with the locking mechanism 300, and the locking mechanism 300 locks the target model of the clamping assembly 200.

[0185] Of course, in other embodiments, there may be multiple transport mechanisms. For example, there may be two transport mechanisms, one for transporting the original model of the clamping assembly 200 from the replacement station to the storage area, and the other for transporting the target model of the clamping assembly 200 from the storage area to the replacement station. The locking mechanism 300 then locks the target model of the clamping assembly 200, completing the replacement operation of the clamping assembly 200. The transport mechanism may be, but is not limited to, an automated guided vehicle (AGV), a forklift, etc.

[0186] By adopting the above technical solution, the transportation of the pressing assembly 200 is facilitated, and the replacement efficiency of the pressing assembly 200 is further improved, thereby further improving the production efficiency of the battery 1.

[0187] In some embodiments of the present application, please refer to Figures 3 and 4 together. The welding device 1000 also includes a driving mechanism 800. When the locking mechanism 300 and the clamping assembly 200 are in a released state, the driving mechanism 800 is used to drive the base 100 to move along the first direction toward the clamping assembly 200, so as to drive the locking mechanism 300 to move to the clamping assembly 200 and lock the clamping assembly 200. When the locking mechanism 300 and the clamping assembly 200 are in a locked state, the driving mechanism 800 is used to drive the base 100 to move back and forth along the first direction, so as to drive the clamping assembly 200 to move toward or away from the part to be welded.

[0188] The drive mechanism 800 is used to drive the base 100 to move along a first direction. In some embodiments, the first direction is a linear direction, and the drive mechanism 800 is a linear drive mechanism 800. The linear drive mechanism 800 may be, but is not limited to, an electric cylinder, an electric hydraulic cylinder, a rack and pinion drive mechanism 800, a ball screw drive mechanism 800, or the like. The number of drive mechanisms 800 may be one or more.

[0189] In some embodiments, the first direction refers to the positive and negative directions of the Z direction shown in Figures 3 and 4. When the clamping assembly 200 needs to be replaced, the driving mechanism 800 drives the base 100 to move from the initial position in the negative direction of the Z direction to the release position. At this time, the locking mechanism 300 automatically releases the original model of the clamping assembly 200. After the original model of the clamping assembly 200 is removed from the locking mechanism 300, the target model of the clamping assembly 200 is docked with the locking mechanism 300. The locking mechanism 300 automatically locks the target model of the clamping assembly 200, and the driving mechanism 800 drives the base 100 to move along the positive direction of the Z direction to the initial position. When the locking mechanism 300 and the clamping assembly 200 are in a locked state, during the process of the welding device 1000 welding the part to be welded, the driving mechanism 800 drives the base 100 to move in the opposite direction of the Z direction so that the welding pressure head 220 of the clamping assembly 200 is pressed against the part to be welded. After the welding device 1000 completes the welding operation on the part to be welded, the driving mechanism 800 drives the base 100 to move in the positive direction of the Z direction so that the welding pressure head 220 of the clamping assembly 200 is separated from the part to be welded.

[0190] In some embodiments, in order to improve the movement stability of the base 100, please refer to Figure 5, the welding device 1000 also includes a frame 900, the frame 900 includes a frame body 910, a slide rail 920 and a slider 930, the slide rail 920 is connected to the frame body 910 and extends along the above-mentioned first direction, the slider 930 is slidably installed on the slide rail 920 and connected to the base 100, so that the base 100 can slide back and forth on the slide rail 920.

[0191] By adopting the above-mentioned technical solution, the driving mechanism 800 can not only drive the base 100 to move along the first direction toward the clamping assembly 200 to drive the locking mechanism 300 to move to the clamping assembly 200 and lock the clamping assembly 200, but can also drive the base 100 to move back and forth along the first direction to enable the clamping assembly 200 to clamp or release the component to be welded, effectively reducing the number of driving components set in the welding device 1000, thereby effectively simplifying the structure of the welding device 1000.

[0192] In some embodiments of the present application, a limiting structure (not shown in the figures) is provided between the base 100 and the mounting base 210, and the limiting structure includes a limiting portion and a limiting opening. The limiting portion is provided in one of the base 100 and the mounting base 210, and the limiting opening is provided in the other of the base 100 and the mounting base 210. The limiting portion can be inserted into the limiting opening along the first direction.

[0193] The limiting structure is a structure used to limit the relative position of the base 100 and the mounting base 210. In some embodiments, the limiting portion can be a limiting column. When the locking mechanism 300 locks the pressing assembly 200, the limiting column is inserted into the limiting opening. There can be multiple limiting portions, and accordingly, there can also be multiple limiting openings. The multiple limiting portions are arranged in a one-to-one correspondence with the multiple limiting openings. In some embodiments, the multiple limiting portions are arranged at intervals along the periphery of the mounting base 210. In other embodiments, the multiple limiting portions are arranged on opposite sides of the mounting base 210.

[0194] In some embodiments, the limiting portion is disposed on a side of the base 100 facing the mounting seat 210 , and the limiting opening is opened on a side of the mounting seat 210 facing the base 100 .

[0195] In other embodiments, the limiting portion is disposed on a side of the mounting seat 210 facing the base 100 , and the limiting opening is opened on a side of the base 100 facing the mounting seat 210 .

[0196] By adopting the above technical solution, the risk of relative position deviation between the locking mechanism 300 and the clamping assembly 200 during the process of the locking mechanism 300 locking or releasing the clamping assembly 200 is effectively reduced, so that the locking mechanism 300 and the clamping assembly 200 can be stably docked.

[0197] In some embodiments of the present application, the first direction is the gravity direction of the pressing assembly 200 .

[0198] By adopting the above technical solution, the locking mechanism 300 can automatically lock or release the pressing assembly 200 during the process of the pressing assembly 200 rising or falling, which makes it easier for the locking mechanism 300 to lock or release the pressing assembly 200.

[0199] In some embodiments of the present application, please refer to FIG. 9 and FIG. 11 . The pressing assembly 200 further includes an elastic member 270 . The elastic member 270 is elastically connected between the mounting seat 210 and the welding pressure head 220 .

[0200] The elastic member 270 is used to buffer the pressure exerted by the welding head 220 on the component to be welded. The elastic member 270 may be, but is not limited to, a spring, a spring, an elastic pressure block, etc. The number of elastic members 270 may be one or more. In some embodiments, there are multiple elastic members 270, and the multiple elastic members 270 are evenly arranged along the circumference of the welding head 220.

[0201] In some embodiments, the mounting base 210 includes a base 211 and a connector 213. The connector 213 may be, but is not limited to, a bolt, a screw, a latch, etc. The connector 213 is connected to the base 211. The welding pressure head 220 is connected to the connector 213 and can slide back and forth along the pressure direction of the welding pressure head 220 (such as the first direction described above). The elastic member 270 is a spring. The elastic member 270 is sleeved on the connector 213. One end of the elastic member 270 presses against the welding pressure head 220, and the other end of the elastic member 270 presses against the base 211 or the connector 213. When the welding pressure head 220 presses against the component to be welded, the elastic member 270 is in a compressed state. When the welding pressure head 220 is separated from the component to be welded, the elastic member 270 returns to its original state.

[0202] By adopting the above technical solution, the pressure exerted by the welding pressure head 220 on the parts to be welded is effectively buffered, thereby effectively reducing the risk of damage to the parts to be welded due to excessive pressure.

[0203] The replacement process of the pressing assembly 200 in the welding device 1000 is as follows:

[0204] The carrying mechanism transports the target model's clamping assembly 200 to the replacement station, and the driving mechanism 800 drives the base 100 to move from the initial position in the opposite direction of the Z direction to the replacement station. At this time, the locking mechanism 300 automatically releases the original model's clamping assembly 200 so that the original model's clamping assembly 200 is placed on the carrying mechanism. Then the carrying mechanism moves so that the target model's clamping assembly 200 is aligned with the locking mechanism 300. The locking mechanism 300 automatically locks the clamping assembly 200. The driving mechanism 800 drives the base 100 to move in the positive direction of the Z direction to the initial position. The carrying mechanism transports the original model's clamping assembly 200 from the replacement station to the storage area for storing the clamping assembly 200, thereby completing the replacement operation of the clamping assembly 200.

[0205] The welding process of the welding device 1000 is as follows:

[0206] When the locking mechanism 300 and the pressing assembly 200 are locked, while the welding device 1000 is welding the component to be welded, the driving mechanism 800 drives the base 100 to move in the reverse direction of the Z direction, so that the welding head 220 of the pressing assembly 200 presses against the component to be welded. At this time, the welding head of the welding device 1000 welds the component to be welded. After the welding device 1000 completes the welding operation on the component to be welded, the driving mechanism 800 drives the base 100 to move in the positive direction of the Z direction, so that the welding head 220 of the pressing assembly 200 is separated from the component to be welded, waiting for the next welding operation.

[0207] In a second aspect, an embodiment of the present application provides a battery production line, comprising a conveying device and a welding device 1000 as described in any one of the above embodiments, wherein the conveying device is used to convey the parts to be welded of the battery 1 to the welding device 1000, and the welding device 1000 is used to weld the parts to be welded.

[0208] The parts to be welded may include any two parts in the battery 1 that need to be welded to each other. For example, the parts to be welded include a battery cell 12 and a busbar component. The welding device 1000 presses the busbar component against the electrode terminal of the battery cell 12 through the welding pressure head 220 of the clamping assembly 200, and the welding head welds the battery cell 12 and the busbar component.

[0209] The battery production line provided in the embodiment of the present application effectively improves the production efficiency of the battery 1 by adopting the welding device 1000 described in any of the above embodiments.

[0210] In a third aspect, an embodiment of the present application provides a replacement method for replacing the pressing assembly 200 of the welding device 1000 described in any of the above embodiments. The replacement method includes the following steps:

[0211] Place the target model of the pressing assembly 200 at the replacement station;

[0212] The locking mechanism 300 and the original model of the clamping assembly 200 are moved synchronously to the replacement station;

[0213] The locking mechanism 300 releases the original model of the pressing assembly 200 so that the original model of the pressing assembly 200 is separated from the locking mechanism 300;

[0214] The locking mechanism 300 locks the pressing assembly 200 of the target model, and the locking mechanism 300 and the pressing assembly 200 of the target model move to the initial position synchronously.

[0215] When the locking mechanism 300 is an inflatable shaft mechanism, the inflatable shaft 310 can be evacuated by an external air source to shrink the inflatable shaft 310. At this time, the locking mechanism 300 releases the clamping assembly 200, and the clamping assembly 200 can be removed from the locking mechanism 300. The external air source supplies air to the inflatable shaft 310 to expand the inflatable shaft 310. At this time, the locking mechanism 300 locks the clamping assembly 200.

[0216] The locking mechanism 300 in the model change method provided in the embodiment of the present application can automatically release the original model of the clamping assembly 200, and the original model of the clamping assembly 200 can be removed from the locking mechanism 300. Then, the locking mechanism 300 can automatically lock the target model of the clamping assembly 200, thereby completing the replacement operation of the clamping assembly 200. The operation process is simple and convenient, effectively improving the replacement efficiency of the clamping assembly 200, thereby effectively improving the production efficiency of the battery 1.

[0217] In a fourth aspect, an embodiment of the present application provides a replacement method for replacing the pressing assembly 200 of the welding device 1000 described in any of the above embodiments. The replacement method includes the following steps:

[0218] The target model of the pressing assembly 200 is placed on the transport mechanism, and the transport mechanism transports the target model of the pressing assembly 200 to the replacement station;

[0219] The locking mechanism 300 and the original model of the clamping assembly 200 are moved synchronously to the replacement station;

[0220] The locking mechanism 300 releases the original model of the pressing assembly 200 so that the original model of the pressing assembly 200 is placed on the carrying mechanism;

[0221] The carrier mechanism moves so that the clamping assembly 200 of the target model is aligned with the locking mechanism 300, the locking mechanism 300 locks the clamping assembly 200 of the target model, and the locking mechanism 300 and the clamping assembly 200 of the target model move synchronously to the initial position;

[0222] The transport mechanism transports the original model of the compaction assembly 200 to a storage area.

[0223] In the model change method provided in the embodiment of the present application, the transport mechanism can transport the target model of the clamping assembly 200 to the replacement station, and the locking mechanism 300 can automatically release the original model of the clamping assembly 200 so that the original model of the clamping assembly 200 is placed on the transport mechanism. The transport mechanism moves so that the target model of the clamping assembly 200 is aligned with the locking mechanism 300. The locking mechanism 300 can automatically lock the target model of the clamping assembly 200, thereby completing the replacement operation of the clamping assembly 200. The operation process is simple and convenient, which effectively improves the replacement efficiency of the clamping assembly 200, thereby effectively improving the production efficiency of the battery 1.

[0224] In a fifth aspect, an embodiment of the present application provides a replacement method for replacing the pressing assembly 200 of the welding device 1000 described in any of the above embodiments. The replacement method includes the following steps:

[0225] Place the target model of the pressing assembly 200 at the replacement station;

[0226] The driving mechanism 800 drives the locking mechanism 300 and the original model of the pressing assembly 200 to move synchronously to the replacement station;

[0227] The locking mechanism 300 releases the original model of the pressing assembly 200 so that the original model of the pressing assembly 200 is separated from the locking mechanism 300;

[0228] The locking mechanism 300 locks the pressing assembly 200 of the target model, and the driving mechanism 800 drives the locking mechanism 300 and the pressing assembly 200 of the target model to move synchronously to the initial position.

[0229] In the replacement method provided in the embodiment of the present application, the driving mechanism 800 can drive the locking mechanism 300 to move back and forth between the initial position and the replacement station. When the locking mechanism 300 moves to the replacement station, the locking mechanism 300 can automatically release the original model of the clamping assembly 200, and the original model of the clamping assembly 200 can be removed from the locking mechanism 300. Then, the locking mechanism 300 can automatically lock the target model of the clamping assembly 200, thereby completing the replacement operation of the clamping assembly 200. The operation process is simple and convenient, which effectively improves the replacement efficiency of the clamping assembly 200, thereby effectively improving the production efficiency of the battery 1.

[0230] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A welding device, characterized in that, The welding device includes: a base; a pressing component including a mounting seat and a welding head, and the welding head is mounted on the mounting seat; a locking mechanism mounted on the base, and the locking mechanism is used to lock or release the mounting seat.

2. The welding device according to claim 1, characterized in that, The locking mechanism includes an air shaft, and the air shaft is connected to an external air source. When the air shaft is in an expanded state, the air shaft locks the mounting seat. When the air shaft is in a contracted state, the air shaft releases the mounting seat.

3. The welding device according to claim 2, characterized in that, The locking mechanism further includes a gas guiding seat, the gas guiding seat is mounted on the base, and the air shaft is connected to the external air source through the gas guiding seat.

4. The welding device according to claim 2 or 3, characterized in that, The mounting seat includes a seat body and a shaft joint mounted on the seat body. When the air shaft is in an expanded state, the air shaft locks the shaft joint. When the air shaft is in a contracted state, the air shaft releases the shaft joint.

5. The welding device according to any one of claims 1-4, characterized in that, The welding head has a welding space and a first protective gas channel communicating with the welding space. The mounting seat has a second protective gas channel communicating with the first protective gas channel. The base has a third protective gas channel communicating with an external protective gas source. When the locking mechanism locks the mounting seat, the third protective gas channel is docked with the second protective gas channel so that the third protective gas channel communicates with the second protective gas channel.

6. The welding device according to claim 5, wherein, The welding device further includes a first joint, and the first joint is arranged in one of the second protective gas channel and the third protective gas channel. When the locking mechanism locks the mounting seat, the first joint is inserted into the other of the second protective gas channel and the third protective gas channel so that the second protective gas channel is docked with the third protective gas channel.

7. The welding device according to claim 5 or 6, wherein the welding device further includes a first seal; the first seal is arranged on the base and annularly arranged at the port of the third protective gas channel close to the second protective gas channel; or the first seal is arranged on the mounting seat and annularly arranged at the port of the second protective gas channel close to the third protective gas channel; When the locking mechanism locks the mounting seat, the base and the mounting seat cooperate to clamp the first seal along the locking direction of the locking mechanism.

8. The welding device according to any one of claims 5-7, characterized in that, The pressing component further includes a protective gas shunt seat mounted on the mounting seat. The protective gas shunt seat has a main air channel communicating with the second protective gas channel and a plurality of branch air channels communicating with the main air channel. The number of the welding heads is multiple, and the plurality of branch air channels are correspondingly communicated with the first protective gas channels of the plurality of welding heads one by one.

9. The welding device according to claim 8, wherein, The pressing component further includes a first pipe fitting, and the first pipe fitting is connected between the branch air channel and the first protective gas channel so that the branch air channel communicates with the first protective gas channel.

10. The welding device according to claim 9, characterized in that The pressing assembly further includes a second joint and a third joint. The second joint is connected to the branch air duct, and the third joint is connected to the first protective gas channel. One end of the first pipe fitting is connected to the second joint, and the other end of the first pipe fitting is connected to the third joint.

11. The welding device according to any one of claims 1-4, characterized in that, The welding head has a welding space and a first dust suction channel communicating with the welding space. The mounting base has a second dust suction channel communicating with the first dust suction channel. The base has a third dust suction channel communicating with an external air extraction device. When the locking mechanism locks the mounting base, the third dust suction channel is docked with the second dust suction channel so that the third dust suction channel communicates with the second dust suction channel.

12. The welding device according to claim 11, wherein the welding device further includes a second seal; the second seal is disposed on the base and annularly arranged at the port of the third dust suction channel close to the second dust suction channel; or the second seal is disposed on the mounting base and annularly arranged at the port of the second dust suction channel close to the third dust suction channel; When the locking mechanism locks the mounting base, the base and the mounting base cooperate to clamp the second seal along the locking direction of the locking mechanism.

13. The welding device according to claim 11 or 12, characterized in that, The number of the welding heads and the number of the second dust suction channels are multiple. The first dust suction channels of the multiple welding heads communicate with the multiple second dust suction channels in one-to-one correspondence. When the locking mechanism locks the mounting base, the third dust suction channel is docked with the multiple second dust suction channels.

14. The welding device according to any one of claims 11-13, characterized in that, The pressing assembly further includes a second pipe fitting, and the second pipe fitting is connected between the second dust suction channel and the first dust suction channel so that the second dust suction channel communicates with the first dust suction channel.

15. The welding device according to any one of claims 11-14, characterized in that, The welding device further includes a dust suction pipe, and the third dust suction channel communicates with the external air extraction device through the dust suction pipe.

16. The welding device according to any one of claims 1-15, characterized in that, The welding device further includes a conveying mechanism, and the conveying mechanism is used to convey the pressing assembly to the locking mechanism or to convey the pressing assembly away from the locking mechanism.

17. The welding device according to any one of claims 1-16, characterized in that, The welding device further includes a driving mechanism. When the locking mechanism and the pressing assembly are in a released state, the driving mechanism is used to drive the base to move in a first direction toward the pressing assembly to drive the locking mechanism to move to the pressing assembly and lock the pressing assembly. When the locking mechanism and the pressing assembly are in a locked state, the driving mechanism is used to drive the base to reciprocate in the first direction to drive the pressing assembly to move in a direction close to or away from the component to be welded.

18. The welding device according to claim 17, wherein A limiting structure is provided between the base and the mounting base. The limiting structure includes a limiting portion and a limiting opening. The limiting portion is disposed on one of the base and the mounting base, and the limiting opening is disposed on the other of the base and the mounting base. The limiting portion can be inserted into the limiting opening along the first direction.

19. The welding device according to claim 17 or 18, characterized in that, The first direction is the gravity direction of the pressing assembly.

20. The welding device according to any one of claims 1-19, characterized in that, The pressing assembly further includes an elastic member, and the elastic member is elastically connected between the mounting base and the welding head.

21. A battery production line, characterized in that, The battery production line includes a conveying device and the welding device according to any one of claims 1-20. The conveying device is configured to convey the components to be welded of the battery to the welding device, and the welding device is configured to weld the components to be welded.

22. A changeover method, characterized in that, The changeover method is used to replace the pressing assembly of the welding device according to any one of claims 1-20, and the changeover method includes the following steps: Place the pressing assembly of the target model at the replacement station; The locking mechanism moves synchronously with the pressing assembly of the original model to the replacement station; The locking mechanism releases the pressing assembly of the original model so that the pressing assembly of the original model disengages from the locking mechanism; The locking mechanism locks the pressing assembly of the target model, and the locking mechanism moves synchronously with the pressing assembly of the target model to the initial position.

23. A changeover method, characterized in that The changeover method is used to replace the pressing assembly of the welding device according to claim 16, and the changeover method includes the following steps: Place the pressing assembly of the target model on the conveying mechanism, and the conveying mechanism transports the pressing assembly of the target model to the replacement station; The locking mechanism moves synchronously with the pressing assembly of the original model to the replacement station; The locking mechanism releases the pressing assembly of the original model so that the pressing assembly of the original model is placed on the conveying mechanism; The conveying mechanism moves so that the pressing assembly of the target model is aligned with the locking mechanism. The locking mechanism locks the pressing assembly of the target model, and the locking mechanism moves synchronously with the pressing assembly of the target model to the initial position; The conveying mechanism transports the pressing assembly of the original model to the storage area.

24. A changeover method, characterized in that The changeover method is used to replace the pressing assembly of the welding device according to any one of claims 17-19, and the changeover method includes the following steps: Place the pressing assembly of the target model at the replacement station; The driving mechanism drives the locking mechanism and the pressing assembly of the original model to move synchronously to the replacement station; The locking mechanism releases the pressing assembly of the original model so that the pressing assembly of the original model disengages from the locking mechanism; The locking mechanism locks the pressing assembly of the target model, and the driving mechanism drives the locking mechanism and the pressing assembly of the target model to move synchronously to the initial position.

Images