Welding equipment

Abstract

The present invention provides a welding device, which relates to the technical field of photovoltaic cell manufacturing equipment. A welding device includes: a busbar transfer device, which is used to transfer a busbar of a set length to a welding station; a battery string transfer device, which is used to transfer multiple groups of battery strings after layout to an area close to the welding station; a battery string correction device, which is used to correct the battery string; and a welding device, which is used to weld a welding strip head to a busbar. The welding equipment provided by the present invention has the advantages of high welding efficiency and high welding machine precision.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic cell manufacturing equipment, and in particular to welding equipment. Background Art

[0002] One of the cell string arrangements of photovoltaic solar cells is as follows Figure 1 As shown, 1 is the busbar, 2 is the battery cell, 3 is the welding strip, and 4 is the support seat. The three arrow positions are upper, middle, and lower from left to right. The welding strip heads used to connect the battery cells in series are at these three positions. The battery cells are connected in series by welding strips into battery strings, placed on the support seat, and the battery strings are arranged to form the required layout for the process. In order to connect the welding strip heads of multiple groups of battery strings together to achieve drainage, the welding strip heads on the battery strings need to be welded to the busbar.

[0003] The existing welding equipment has a low degree of automation and low welding accuracy, which seriously affects the manufacturing efficiency and product quality of photovoltaic solar cells.

[0004] Based on the above problems, it is particularly important to propose a welding equipment with high welding efficiency and high precision.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide a welding machine device to solve at least one of the above problems.

[0007] In order to solve the above technical problems, the technical means adopted by the present invention are:

[0008] The present invention provides a welding device, comprising:

[0009] A busbar transfer device, used to transfer a busbar of a set length to a welding station;

[0010] A battery string transfer device is used to transfer multiple battery strings after layout to an area close to the welding station;

[0011] A battery string correction device, used for correcting the battery string; and

[0012] A welding device is used to weld the welding strip heads on the battery string to the busbar.

[0013] As a further technical solution, the busbar transfer device includes a busbar preparation mechanism and a busbar transfer mechanism;

[0014] The busbar preparation mechanism is used to prepare a busbar of a set length, and the busbar transfer mechanism is used to obtain the busbar prepared by the busbar preparation mechanism and transfer the busbar to a welding station.

[0015] As a further technical solution, the busbar transfer mechanism includes a first transfer assembly and a second transfer assembly;

[0016] The first transfer assembly is used to transfer the busbar prepared by the busbar preparation mechanism to the second transfer assembly;

[0017] The second transfer assembly is arranged corresponding to the welding device and is used to transfer the bus bar to the welding station.

[0018] As a further technical solution, the welding device includes a welding mechanism, which at least includes a blowing component capable of blowing out welding hot air, and a pressing needle;

[0019] The blowing component has a first cavity, the air outlet end of the first cavity is used to be opposite to the pressure needle and / or the weldment, and the air inlet end is used to be connected to the air supply device;

[0020] The working end of the pressing needle protrudes from the blowing component and is used for pressing the weldment.

[0021] As a further technical solution, the blowing component is provided with a hot air pipe connected to the air inlet end of the first cavity, and the hot air pipe is connected to a hot air supply device;

[0022] Alternatively, the blowing component is provided with a hot air pipe and an air pipe which are connected to the air inlet end of the first cavity, the hot air pipe is connected to the hot air supply device, and the air pipe is connected to the air supply device.

[0023] As a further technical solution, the welding device includes a welding translation mechanism, and the welding translation mechanism includes a first translation driving member and a first translation guiding member;

[0024] The welding mechanism is slidably connected to the first translation guide member, and the output end of the first translation drive member is connected to the welding mechanism;

[0025] The first translation driving member can drive the welding mechanism to move relative to the first translation guiding member to adjust the front and rear position of the welding mechanism.

[0026] As a further technical solution, the welding device includes a welding lifting mechanism, and the welding lifting mechanism includes a first lifting driving component, a first lifting guide component and a first lifting connecting component;

[0027] The first lifting connection member is slidably connected to the first lifting guide member, the output end of the first lifting drive member is connected to the first lifting connection member, and the welding mechanism is connected to the first lifting connection member;

[0028] The first lifting driving component can drive the first lifting connecting component and the welding mechanism to move relative to the first lifting guiding component to adjust the upper and lower positions of the welding mechanism so that the working end of the welding mechanism is close to or away from the weldment.

[0029] As a further technical solution, the battery string correction device includes a correction mechanism and an extraction mechanism for extracting the battery string;

[0030] The deflection correction mechanism comprises a mounting seat and at least one set of first deflection correction drive components and at least two sets of second deflection correction drive components arranged on the mounting seat;

[0031] The extraction mechanism is connected to the mounting seat;

[0032] At least one set of the first deviation-correcting driving components is in driving connection with the extracting mechanism and is capable of driving the extracting mechanism to move in the left-right direction relative to the mounting seat;

[0033] At least two groups of the second correcting drive components are transmission-connected to the extraction mechanism, and at least two groups of the second correcting drive components cooperate with each other to drive the extraction mechanism to move in the front-to-back direction relative to the mounting base and / or rotate in the horizontal plane relative to the mounting base.

[0034] As a further technical solution, the deviation-correcting mechanism includes a plurality of guide seats respectively used to cooperate with the first deviation-correcting drive assembly and the second deviation-correcting drive assembly, and the guide seats are fixedly connected to the extraction mechanism;

[0035] The guide seat is provided with a guide groove, and the output ends of the first deviation-correcting drive assembly and the second deviation-correcting drive assembly are provided with guide assemblies, and the guide assemblies match the guide groove;

[0036] The guide assembly includes an eccentric shaft and a follower, wherein the follower is connected to the output end of the eccentric shaft, and the input end of the eccentric shaft is used for transmission connection with the corresponding first deviation correcting drive assembly or the second deviation correcting drive assembly;

[0037] The first deviation-correcting driving assembly can squeeze the left and right side walls of the corresponding guide groove through the follower, and drive the extraction mechanism to move in the left and right directions through the guide seat used in conjunction with the first deviation-correcting driving assembly;

[0038] The second deviation-correcting drive assembly can squeeze the corresponding front and rear side walls of the guide groove through the follower, and drive the extraction mechanism to move in the front-to-rear direction or rotate in the horizontal plane through the guide seat used in conjunction with the second deviation-correcting drive assembly.

[0039] As a further technical solution, the deviation-correcting mechanism includes a linkage component, and the mounting seat and the extraction mechanism are connected through the linkage component;

[0040] The linkage assembly comprises a first guide member, a second guide member and a rotation connection member, wherein the first guide member is fixedly connected to the mounting seat, and the second guide member is slidably connected to the first guide member; the first guide member is arranged along the front-to-back direction, and the second guide member is arranged along the left-to-right direction, or the first guide member is arranged along the left-to-right direction, and the second guide member is arranged along the front-to-back direction;

[0041] A sliding seat is provided between the rotating connection member and the second guide member. The sliding seat is slidably connected to the second guide member. The first end of the rotating connection member is connected to the sliding seat, and the second end is connected to the extraction mechanism.

[0042] As a further technical solution, the battery string deviation correction device includes a deviation correction translation mechanism, and the deviation correction translation mechanism includes a second translation driving member, a second translation guiding member and a translation connecting member;

[0043] The translation connection member is slidably connected to the second translation guide member, the translation connection member is connected to the output end of the second translation drive member, and the mounting seat in the deviation correction mechanism is connected to the translation connection member;

[0044] The second translation driving member can drive the translation connecting member and the deviation correcting mechanism to move in the front-rear direction relative to the second translation guiding member to adjust the front-rear position of the deviation correcting mechanism.

[0045] As a further technical solution, the battery string deviation correction device includes a deviation correction lifting mechanism, and the deviation correction lifting mechanism includes a second lifting driving component, a second lifting guide component and a second lifting connecting component;

[0046] The second lifting connection member is slidably connected to the second lifting guide member, the second lifting connection member is drivingly connected to the output end of the second lifting drive member, and the mounting seat is connected to the second lifting connection member;

[0047] The second lifting driving member can drive the second lifting connecting member and the correcting mechanism to move relative to the second lifting guiding member to adjust the upper and lower positions of the correcting mechanism so that the working end of the correcting mechanism is close to or away from the battery string.

[0048] Compared with the prior art, the welding equipment provided by the present invention has the following technical advantages:

[0049] A welding device provided by the present invention includes a busbar transferring device, a battery string transferring device, a battery string correcting device and a welding device, wherein the battery string transferring device is used to transfer the layout battery string to the bottom of the welding device, and adjust the front and rear position, left and right position and angle on the horizontal plane of the battery string through the battery string correcting device; the busbar transferring device transfers the busbar of a set length to the welding station, that is, the busbar corresponds to the welding strip head on the battery string, and finally the welding strip head and the busbar are welded together through the welding device to achieve welding.

[0050] The welding equipment provided by the present invention can automatically transfer battery strings, automatically adjust the positions of battery strings, and automatically transfer bus bars of set lengths, and can correspondingly transfer the bus bars to welding stations, and then automatically weld the bus bars to the welding strip heads on the battery strings, thereby realizing automated loading, deviation correction, and welding processes, greatly improving welding efficiency and welding accuracy, and further improving the manufacturing efficiency and product quality of photovoltaic solar cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 A schematic diagram of the battery string layout;

[0053] Figure 2 A schematic diagram of a welding device provided in an embodiment of the present invention;

[0054] Figure 3 A schematic diagram of a busbar transfer device is provided for an embodiment of the present invention;

[0055] Figure 4 A schematic diagram of a busbar preparation mechanism provided by an embodiment of the present invention;

[0056] Figure 5 A schematic diagram of a second transfer assembly provided in an embodiment of the present invention;

[0057] Figure 6 A schematic diagram of a welding device provided in an embodiment of the present invention;

[0058] Figure 7 A schematic diagram of a welding mechanism and a welding lifting mechanism provided in an embodiment of the present invention;

[0059] Figure 8 A schematic diagram of the internal structure of a welding mechanism provided by an embodiment of the present invention;

[0060] Fig. 9 A schematic diagram of a battery string deviation correction device provided by an embodiment of the present invention;

[0061] Fig.10 A schematic diagram of a deviation correction mechanism and a deviation correction lifting mechanism provided in an embodiment of the present invention;

[0062] Fig.11 A schematic diagram of a guide groove and a guide assembly provided in an embodiment of the present invention;

[0063] Fig.12 A schematic diagram of a detection mechanism provided in an embodiment of the present invention.

[0064] icon:

[0065] 100-busbar transfer device; 110-busbar preparation mechanism; 120-busbar transfer mechanism; 121-first transfer assembly; 122-second transfer assembly; 1221-welding platform; 200-cell string transfer device; 300-welding device; 310-welding mechanism; 311-blowing component; 3111-second cavity; 3112-first cavity; 312-pressing needle; 313-mounting bracket, 3131-air hole; 314-elastic element; 315-insulating block; 320-welding lifting mechanism; 321-first lifting drive component; 322-first lifting guide component; 323-first lifting connection component; 330-welding translation mechanism; 331-first translation drive component; 332-first translation guide component; 400-cell string deviation correction device; 41 0-correction mechanism; 411-mounting seat; 412-first correction drive assembly; 413-second correction drive assembly; 414-guide seat; 4141-guide groove; 415-guide assembly; 4151-eccentric shaft; 4152-follower; 416-linkage assembly; 4161-first guide member; 4162-second guide member; 4163-rotation connection member; 420-extraction mechanism; 421-fixed plate; 422-adsorption member (gripping member); 430-detection mechanism; 440-correction lifting mechanism; 441-second lifting drive member; 442-second lifting guide member; 443-second lifting connection member; 450-correction translation mechanism; 451-second translation drive member; 452-second translation guide member; 453-translation connection member. DETAILED DESCRIPTION

[0066] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] The present invention is further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0070] Specific structure such as Figure 1 - Fig.12 In this embodiment, Figure 2 In the text, up and down means up and down, left and right means left and right, the inside of the paper vertically is the front, and the outside of the paper vertically is the back.

[0071] The welding equipment provided in this embodiment includes a busbar transfer device 100, which is used to transfer a busbar of a set length to a welding station; a battery string transfer device 200, which is used to transfer multiple groups of battery strings after layout to an area close to the welding station; a battery string correction device 400, which is used to correct the battery string; and a welding device 300, which is used to weld the welding strip head on the battery string to the busbar.

[0072] It should be noted that the welding equipment provided in this embodiment can also be used for welding a battery string with a special layout, so as to facilitate welding the welding strip head on the battery string with the bus bar. Specifically, this embodiment provides a photovoltaic solar cell - half-cell assembly, the specific form of which can be referred to Figure 1 , the cells are connected in series by welding ribbons into a cell string, and the cell strings are arranged in two columns and six rows on the support base, thus forming a half-cell assembly. In order to connect the welding ribbons of each group of cell strings, the welding ribbon heads on the upper, middle and lower paths need to be welded to the busbar to achieve current drainage through the busbar.

[0073] In view of the layout of the above-mentioned half-cell components, the welding equipment in this embodiment is adjusted accordingly. Specifically, the welding equipment includes three groups of bus bar transfer devices 100, three groups of welding devices 300 and two groups of battery string correction devices 400. The three groups of bus bar transfer devices 100 can respectively transfer three bus bars of set lengths to the upper, middle and lower three-way areas, and the two groups of battery string correction devices 400 can correct the two columns of battery strings. Then, the welding device 300 is used to weld the welding strip heads and bus bars in the three-way areas together, so that the welding strip heads on each column of the battery strings are connected together through the bus bars, so as to facilitate drainage through the bus bars.

[0074] In the optional technical solution of this embodiment, the battery string transfer device 200 includes a reduction motor and a conveyor belt. The reduction motor is connected to one or more groups (preferably two groups) of conveyor belts through a transmission shaft. The conveyor belts are used to transport the layout of the battery strings to ensure the stability of the battery string group transmission.

[0075] The busbar preparation mechanism 110 provided in this embodiment is specifically referred to Figure 2 -4. The busbar preparation mechanism 110 includes an unwinding assembly, a busbar pressing assembly, a busbar cutting assembly and a busbar pulling assembly, wherein the unwinding assembly includes a driving member, a material roll and a gravity buffer member, the busbar is wound on the material roll, and the material roll is arranged at the output end of the driving member, the driving member can drive the material roll to rotate for unwinding, and the unwound busbar is cached by the gravity buffer member, the gravity buffer member can adopt a gravity roller, the busbar is wound around the gravity roller, under the action of gravity, the gravity roller moves downward to cache redundant busbars, when a longer busbar is needed in a short time, the gravity roller can be pulled upward by the busbar, so that the cached busbar can be released, so as to realize the caching and releasing process of the busbar. The released busbar passes through the busbar pressing assembly and the busbar cutting assembly in sequence, and the busbar of a set length is pulled out by the busbar pulling assembly, and then the busbar is pressed by the busbar pressing assembly, and the busbar is tensioned in cooperation with the busbar pulling assembly, and then the busbar is cut by the busbar cutting assembly to obtain a busbar of a set length. Preferably, the busbar pressing assembly includes a cylinder and a pressing block, and the cylinder drives the pressing block to press and release the busbar; the busbar cutting assembly includes a cylinder and a cutter, and the cylinder can drive the cutter to cut the busbar.

[0076] Main references Figure 4 ( Figure 4 The upper part is the front and the lower part is the rear), the busbar pulling assembly includes a driving member, a clamping jaw, a guide member and a busbar groove. The guide member is arranged along the front-to-back direction, and the busbar groove is also arranged along the front-to-back direction. The clamping jaw is slidably connected to the guide member, and the output end of the driving member is connected to the clamping jaw, so that the driving member can drive the clamping jaw to move along the guide member, so as to pull the busbar clamped by the clamping jaw out of the unwinding assembly. At the same time, the busbar groove is arranged below the clamping jaw, and the clamping jaw clamps the busbar and moves in the busbar groove to limit the moving range of the busbar. In order to prevent the busbar from detaching from the busbar groove, a vacuum suction hole can also be opened in the busbar groove, and the busbar is adsorbed through the vacuum suction hole to ensure that the busbar can move smoothly in the busbar groove.

[0077] In addition, when one bus bar is needed, one set of bus bar preparation mechanisms 110 can be set, and when multiple bus bars are needed, one set or multiple sets of bus bar preparation mechanisms 110 can be set. Of course, when multiple sets are set, the preparation efficiency can be accelerated, thereby improving the subsequent welding efficiency. For the above-mentioned half-piece assembly, in this embodiment, preferably, three sets of bus bar preparation mechanisms 110 are set to facilitate simultaneous preparation of three bus bars corresponding to the upper hand, the middle hand, and the lower hand, so as to accelerate the preparation efficiency.

[0078] By means of the busbar preparation mechanism 110 , a busbar of a required length can be prepared according to actual needs so as to be compatible with the battery string group.

[0079] The busbar transfer mechanism 120 provided in this embodiment is specifically mainly referred to Figure 2 , 3 5. The busbar transfer mechanism 120 includes a first transfer component 121 and a second transfer component 122.

[0080] The first transfer assembly 121 includes a vacuum suction cup (gripper, etc.), a transfer lifting member and a first transfer translation member, wherein the transfer lifting member is connected to and drives the vacuum suction cup to move up and down, so as to descend to extract the cut busbar of a set length from the busbar preparation mechanism 110, or to lift to avoid the position; and the first transfer translation member is connected to and drives the transfer lifting member, and the transfer lifting member synchronously drives the vacuum suction cup and the extracted busbar to be transferred to the second transfer assembly 122. Preferably, the transfer lifting member includes a driving member and a guiding member, and the driving member can be a combination of a motor, a screw and a slider, a cylinder, an electric cylinder, etc., and the guiding member can be a guide rail, etc. The first transfer translation member includes a driving member and a guiding member, and the manner of the driving member and the guiding member is basically similar to that of the above-mentioned transfer lifting member, and will not be repeated here.

[0081] Main references Figure 5The second transfer assembly 122 includes a welding platform 1221 and a second transfer translation member, and the second transfer translation member includes a driving member and a guide member, wherein the driving member can be a combination of a motor, a synchronous pulley and a synchronous belt, a motor and a screw rod combination, a cylinder, an electric cylinder, etc. Specifically, when the busbar is welded to the half-piece assembly, two groups of second transfer assemblies 122 are provided on one side of the welding station, and one group of second transfer assemblies 122 is provided on the other side to reduce the moving distance of the first transfer assembly 121 and the second transfer assembly 122, thereby reducing the transportation time of the busbar. The three groups of second transfer assemblies 122 are respectively used to transport a busbar, wherein one side of the two groups of second transfer assemblies 122 can share a set of guide rails, and of course, the three groups of second transfer assemblies 122 can also share a set of guide rails. Specifically, the guide is arranged toward the welding station, the welding platform 1221 is slidably connected to the guide, and the driving member is connected and can drive the welding platform 1221 to move along the guide toward the welding station, so as to facilitate the transfer of the busbar on the welding platform 1221 to the welding station. Specifically, when the busbar is welded on the half-cell assembly, considering that the welding position located in the middle is the farthest, or when the three sets of busbar preparation mechanisms 110 are on the same side, the welding position on the side away from the busbar preparation mechanism 110 is the farthest, preferably a conveyor belt is used to ensure the stability of transportation, and the other two paths can be a combination of a motor, a screw and a slider; the guide is preferably a guide rail.

[0082] Furthermore, a busbar groove is provided on the welding platform 1221 to limit the busbar; air holes 3131 are opened at the bottom of the busbar groove, and the air holes 3131 are interconnected and connected to an external vacuum device. The vacuum device can evacuate the inside of the welding platform 1221 and use the negative pressure to suck the busbar, thereby ensuring that the second transfer component 122 always keeps the busbar in a tensioned state in the busbar groove during the process of receiving and transmitting the busbar, thereby further ensuring the accuracy of the busbar position, ensuring the accuracy of welding, and ensuring the welding effect.

[0083] Preferably, air pipes are provided on both sides of the busbar groove, and air blowing holes are provided on the air pipes toward the busbar groove. After welding, air can be blown toward the busbar groove to accelerate cooling of the weldment and improve welding efficiency. Specifically, only air blowing holes toward the welding position can be provided to reduce the number of air blowing holes, thereby increasing the air blowing volume of each air blowing hole, mainly cooling the welding position and improving cooling efficiency.

[0084] Preferably, a heating rod is provided in the welding platform 1221 to preheat the welding platform 1221. When the bus bar is placed on the welding platform 1221 and transferred to the welding station, the heating rod heats the welding platform 1221, which can improve the welding efficiency.

[0085] The busbar transfer mechanism 120 can transfer a busbar of a set length to a welding station so as to facilitate welding of the busbar with the welding strip head on the battery string.

[0086] Main references Figure 6 -8. In the optional technical solution of this embodiment, the welding device 300 includes a welding mechanism 310, and the welding mechanism 310 at least includes a blowing component 311 capable of blowing out welding hot air, and a pressing pin 312; the blowing component 311 has a first cavity 3112, and the air outlet end of the first cavity 3112 is used to be opposite to the pressing pin 312 and / or the weldment, and the air inlet end is used to be connected to the air supply device; the working end of the pressing pin 312 protrudes from the blowing component 311, and is used to press the weldment.

[0087] Furthermore, considering factors such as the position and installation relationship between the pressing needle 312 and the blowing component 311, in this embodiment, preferably, a second cavity 3111 is also formed on the blowing component 311, and the pressing needle 312 is placed in the second cavity 3111, so that the blowing component 311 can surround the pressing needle 312, thereby realizing the position layout between the pressing needle 312 and the blowing component 311, so that the blowing component 311 can avoid the pressing needle 312 and can more efficiently heat and weld the welding position.

[0088] In the welding device 300 provided in this embodiment, during welding, the pressure needle 312 can press the welding strip head onto the bus bar, and the air supply device fills the first cavity 3112 with gas (hot air) for welding, and blows the gas toward the pressure needle 312, the weldment, or toward the pressure needle 312 and the weldment through the air outlet end of the first cavity 3112, so as to heat the pressure needle 312, the weldment, or the pressure needle 312 and the weldment, thereby achieving welding between the welding strip head and the bus bar.

[0089] Furthermore, the air outlet end of the first cavity 3112 is opposite to the pressing pin 312 and / or the weldment, so that the hot air used for welding is only blown toward the pressing pin 312, the weldment, or the pressing pin 312 and the weldment, thereby alleviating the problem of affecting welding efficiency due to the dissipation of welding air.

[0090] Furthermore, the welding strip and the bus bar can be pressed by the pressing needle 312. Since the contact area of ​​the pressing needle 312 is small, preferably, line contact or extremely small area contact is adopted, so that the pressing needle 312 will not stick to the welding strip and the bus bar, and it is easy to separate, and the weld mark at the welding position is small, which will not affect the appearance of the welding strip and the bus bar.

[0091] The welding device 300 provided in the present embodiment adopts a hot air welding method, which replaces the infrared light source welding method used in the prior art, thereby alleviating the problems that the infrared light source welding device occupies a large welding space, has a complex structure, and has many action processes; the welding device 300 provided in the present embodiment mainly includes a pressing needle 312 and a blowing component 311, and hot air for welding is introduced into the blowing component 311 from the outside, and then blows toward the pressing needle 312, the weldment, or the pressing needle 312 and the weldment through the blowing component 311, thereby realizing heating welding, and thus, the welding device 300 has the advantages of simple overall structure, concise welding process, high welding efficiency, and does not require a large welding space.

[0092] In the optional technical solution of this embodiment, hot air can be introduced into the first cavity 3112 to achieve welding, and hot air can be introduced for welding, and air or cold air can be introduced after welding is completed to achieve cooling of the welding machine position. When welding needs to be achieved, a hot air pipe connected to the first cavity 3112 is provided on the blowing component 311 in this embodiment, so that the air supply device can introduce hot air into the first cavity 3112 through the hot air pipe, and blow the hot air to the pressure needle 312, the weldment, or the pressure needle 312 and the weldment through the air outlet to achieve the welding process.

[0093] When both welding and cooling are required, a hot air duct and an air duct (or cold air duct) are provided on the blowing component 311, thereby, the hot air or air (or cold air) supply device can respectively introduce hot air or air (or cold air) into the first cavity 3112 through the hot air duct and the air duct (or cold air duct), so that when welding is required, hot air is introduced and blown toward the pressing needle 312, the weldment, or the pressing needle 312 and the weldment to realize the welding process; after the welding is completed, the hot air supply device stops supplying, at which time, the air (or cold air) supply device starts working and blows air (or cold air) toward the pressing needle 312, the welding strip, or the pressing needle 312 and the welding strip to cool the welding position, which is convenient for cooling the weldment. Compared with the natural cooling process, the cooling time is saved and the efficiency is improved. It should be noted here that when hot air is supplied, the air (or cold air) supply device is stopped and the hot air supply device is started to allow hot air to be introduced into the first cavity 3112 of the blowing component 311, thereby realizing hot air welding; correspondingly, when air (or cold air) is supplied, the hot air supply device is stopped and the air (or cold air) supply device is started to allow air (or cold air) to be introduced into the blowing component 311, thereby realizing cooling of the weldment; it can be seen that there will be no mutual interference between the above-mentioned welding process and the cooling process.

[0094] In this embodiment, in order to realize the installation of the blowing member 311 and the pressing needle 312, a mounting bracket 313 is additionally provided in this embodiment. Specifically, the mounting bracket 313 includes a first connecting member, a second connecting member and a third connecting member connected in sequence from top to bottom, and the three form a similar I-shaped structure, and the blowing member 311 is connected to the bottom of the third connecting member; since the pressing needle 312 is located in the second cavity 3111 on the blowing member 311, a fourth connecting member is provided at the bottom of the third connecting member in this embodiment, and the pressing needle 312 is provided on the fourth connecting member; thus, the installation of the blowing member 311 and the pressing needle 312 is realized by the mounting bracket 313. The welding mechanism 310 is connected to other mechanisms through the first connecting member.

[0095] Furthermore, considering that when the pressure needle 312 presses the welding strip and the bus bar, collision or overpressure may occur, which may easily damage the welding strip and the bus bar, an elastic element 314 is added in this embodiment. Specifically, a slide groove is provided at the bottom of the fourth connecting member, and the non-working end of the pressure needle 312 is slidably connected to the slide groove, and the elastic element 314 is connected between the pressure needle 312 and the fourth connecting member. Therefore, when the pressure needle 312 presses the welding strip and the bus bar, the pressure needle 312 will slide relative to the slide groove and compress the elastic element 314. Under the elastic force of the elastic element 314, the pressure needle 312 presses the welding strip and the bus bar, thereby avoiding the problem of collision or overpressure caused by direct rigid contact.

[0096] Preferably, a cover body is provided on the outer side of the welding mechanism 310 , and heat dissipation holes are opened on the cover body to facilitate heat dissipation and improve the aesthetics of the welding mechanism 310 .

[0097] Preferably, the blowing member 311 is connected to the third connecting member via a heat insulating block 315. The heat insulating block 315 blocks the heat transfer on the blowing member 311, further improving the service life of the structure connected to the blowing member 311.

[0098] In this embodiment, the welding device 300 further includes a welding translation mechanism 330, wherein the welding translation mechanism 330 includes a first translation driving member 331 and a first translation guiding member 332. Specifically, the first translation driving member 331 is preferably a cylinder, and the first translation guiding member 332 is preferably a guide rail, which is arranged on a frame or other structures, and the top end (first connecting member) of the mounting bracket 313 of the welding mechanism 310 is slidably connected to the guide rail, and the output end of the first translation driving member 331 is connected to the mounting bracket 313, thereby, under the driving action of the first translation driving member 331, the welding mechanism 310 can move along the extension direction of the guide rail to adjust the front and rear position of the welding mechanism 310. When the welding device 300 is provided with only one set of welding mechanisms 310, the welding translation mechanism 330 is used to adjust the front and rear positions of the welding mechanisms 310 so that the welding mechanisms 310 correspond to the positions to be welded; when the welding device 300 includes multiple sets of welding mechanisms 310 spaced apart in the front and rear directions, multiple sets of first translation driving members 331 correspond one to one with the multiple sets of welding mechanisms 310, whereby, under the driving action of multiple sets of first translation driving members 331, the multiple sets of welding mechanisms 310 can move in the front and rear directions respectively to adjust the spacing between two adjacent sets of welding mechanisms 310, so that when the battery string group is changed, the spacing between adjacent welding mechanisms 310 in the front and rear directions can be adapted to the spacing between the battery strings. By setting the welding translation mechanism 330, the problem of the difficulty of changing the battery string group due to manual adjustment of the spacing between adjacent welding mechanisms 310 in the prior art is alleviated.

[0099] In this embodiment, the welding device 300 further includes a welding lifting mechanism 320, which includes a first lifting drive member 321, a first lifting guide member 322 and a first lifting connection member 323. Specifically, the first lifting drive member 321 can be a combination of a motor and a screw rod, or a cylinder, an electric cylinder, etc., the first lifting guide member 322 can be a guide rail or a guide rod, the first lifting connection member 323 is a plate-like structure, and the welding mechanism 310 is connected to the first lifting connection member 323, thereby, under the driving action of the first lifting drive member 321, the first lifting connection member 323 can move in the up and down direction, and the first lifting connection member 323 synchronously drives the welding mechanism 310 to move up and down, so that the working end of the welding mechanism 310 can be close to or away from the weldment.

[0100] refer to Fig. 9-12. In the optional technical solution of this embodiment, the battery string correction device 400 includes a correction mechanism 410 and an extraction mechanism 420, wherein the correction mechanism 410 includes a mounting seat 411, at least one group of first correction drive components 412 and at least two groups of second correction drive components 413, and the output ends of the first correction drive components 412 and the second correction drive components 413 are transmission-connected to the extraction mechanism 420. As a result, under the driving action of the first correction drive component 412, the extraction mechanism 420 can move in the left and right directions to adjust the position of the battery string thereon in the left and right directions; under the cooperative driving action of the second correction drive component 413, the extraction mechanism 420 can move in the front and back directions to adjust the position of the battery string thereon in the front and back directions. At the same time, at least two groups of second correction drive components 413 work together to drive the extraction mechanism 420 to rotate a certain angle to adjust the angle of the battery string thereon. It should be noted that, in this embodiment, the left and right direction of the battery string correction device 400 corresponds to the length direction of the product to be corrected (battery string), and the front and back direction of the battery string correction device 400 corresponds to the width direction of the product to be corrected (battery string).

[0101] The correction device 400 provided in this embodiment can adjust the left and right position, front and back position, and horizontal angle of the extraction mechanism 420, and the extraction mechanism 420 can synchronously drive the battery string to adjust the left and right position, front and back position, and horizontal angle, so that the position to be welded of the battery string is aligned with the final welding station, thereby ensuring the position accuracy of the battery string, and when the bus bar is in place, the battery string and the bus bar can be quickly welded, thereby improving the welding efficiency.

[0102] In this embodiment, the extraction mechanism 420 can adopt a mechanical clamping method or a vacuum adsorption method, both of which can meet the requirements of extracting the battery string. Considering that mechanical clamping may cause certain damage to the battery string, the vacuum adsorption method is preferred in this embodiment. Specifically, the extraction mechanism 420 includes a long strip fixed plate 421 to correspond to the shape of the battery string for easy extraction. A plurality of adsorption members 422, such as suction heads or suction cups, are arranged at intervals on the fixed plate 421. The adsorption member 422 is connected to the external vacuum device through a pipeline, thereby achieving adsorption of the battery string, so that the extraction mechanism 420 can be driven to move through the correction mechanism 410 to adjust the position of the extraction mechanism 420 and the battery string adsorbed by it.

[0103] It should be noted that the deflection correction mechanism 410 in this embodiment includes at least one group of first deflection correction drive components 412 and at least two groups of second deflection correction drive components 413 arranged at intervals; when one group of first deflection correction drive components 412 is set, the group of first deflection correction drive components 412 can drive the extraction mechanism 420 to move in the left and right direction; when multiple groups of first deflection correction drive components 412 are set, the output ends of the multiple groups of first deflection correction drive components 412 are consistent with the cooperation mode of the extraction mechanism 420 (the magnitude and direction of the force provided to the extraction mechanism 420 are the same, such as being arranged in a row, etc.), and the multiple groups move synchronously, thereby, the requirement of driving the extraction mechanism 420 to move in the left and right direction can also be met. Similarly, when two groups of second deflection correction drive components 413 are set, when the two groups of second deflection correction drive components 413 drive the extraction mechanism 420 in the same direction, the extraction mechanism 420 can be moved in the front-back direction, and when the two groups of second deflection correction drive components 413 drive the extraction mechanism 420 in the opposite direction, due to the torque generated, the extraction mechanism 420 can be rotated by a certain angle. Preferably, a group of first deflection-correcting drive components 412 is arranged near the middle of the extraction mechanism 420, and two groups of second deflection-correcting drive components 413 are arranged near the left and right ends of the extraction mechanism 420, respectively. At this time, since the left and right directions correspond to the length direction of the product to be deflected (battery string), the second deflection-correcting drive components 413 located at the left and right ends can synchronously drive the left and right ends of the extraction mechanism 420 when cooperating with the driving action, thereby improving the synchronization accuracy of the left and right deflection correction; and when the second deflection-correcting drive components 413 located at the left and right ends work together, the rotational torque can be increased to facilitate the adjustment of the angle in the horizontal plane. When multiple groups of second deflection-correcting drive components 413 are arranged, the principle is similar to that of the multiple groups of first deflection-correcting drive components 412 mentioned above. In addition, when multiple groups of second deflection-correcting drive components 413 are provided, the multiple groups of second deflection-correcting drive components 413 are divided into two parts (for example, two rows, wherein each row may include multiple groups), and the two parts of the second deflection-correcting drive components 413 move synchronously, when the two parts of the second deflection-correcting drive components 413 drive the extraction mechanism 420 in the same direction, the extraction mechanism 420 moves in the front-to-back direction, and when the two parts of the second deflection-correcting drive components 413 drive the extraction mechanism 420 in opposite directions, the extraction mechanism 420 rotates. Preferably, the two parts of the second deflection-correcting drive components 413 are respectively provided at positions close to the left and right ends of the extraction mechanism 420, and the details may refer to the above-mentioned scheme of providing two groups, which will not be repeated here.

[0104] Further, the first deviation-correcting drive assembly 412 and the second deviation-correcting drive assembly 413 each include a driving motor and a guide assembly 415, wherein the guide assembly 415 includes an eccentric shaft 4151 and a follower 4152. The output shaft of the driving motor is transmission-connected to the eccentric shaft 4151, and the follower 4152 is transmission-connected to the eccentric shaft 4151, whereby the driving motor can drive the eccentric shaft 4151 to rotate, and the follower 4152 is driven by the eccentric shaft 4151 to shake. Further, the deviation-correcting mechanism 410 also includes a guide seat 414, which is fixedly mounted on the extraction mechanism 420 (the guide seat 414 is fixedly connected to the fixed plate 421), and a guide groove 4141 is provided on the guide seat 414, and the follower 4152 is clamped in the corresponding guide groove 4141.

[0105] Furthermore, the guide groove 4141 is in the shape of a long hole (or a rounded rectangle), and the length of the guide groove 4141 is greater than the outer diameter of the follower 4152. In order to improve the accuracy and reduce the impact, the width of the guide groove 4141 and the outer diameter of the follower 4152 need to be designed to be equal in size and meet certain tolerance requirements. In this way, when the driving motor drives the eccentric shaft 4151 to rotate, the eccentric shaft 4151 drives the follower 4152 to shake, and the follower 4152 can squeeze the guide groove. The guide seat 414 transmits power to the extraction mechanism 420 and drives the extraction mechanism 420 to move. In addition, since the length of the guide groove 4141 is larger than the outer diameter of the follower 4152, the follower 4152 has a certain floating amount in the length direction of the guide groove 4141, and when the driving motor drives the eccentric shaft 4151 and the follower 4152 to rotate, it can ensure that the length direction of the guide groove 4141 will not limit the movement of the follower 4152.

[0106] It should be noted that the first deviation-correcting driving assembly 412 can drive the extraction mechanism 420 to move in the left-right direction, and thus, the guide slot 4141 used in conjunction with the first deviation-correcting driving assembly 412 has a width direction along the left-right direction and a length direction along the front-back direction, so that the first deviation-correcting driving assembly 412 can drive the guide seat 414 to move in the left-right direction through the eccentric shaft 4151 and the follower 4152, so as to adjust the left-right position of the extraction mechanism 420. Similarly, the second deviation-correcting driving assembly 413 can drive the extraction mechanism 420 to move in the front-back direction, and thus, the guide slot 4141 used in conjunction with the second deviation-correcting driving assembly 413 has a width direction along the front-back direction and a length direction along the left-right direction, so that the second deviation-correcting driving assembly 413 can drive the guide seat 414 to move in the front-back direction or rotate in the horizontal plane through the eccentric shaft 4151 and the follower 4152.

[0107] Furthermore, considering that the extraction mechanism 420 needs to move in the left-right direction, the front-back direction, and the angle on the horizontal plane after being subjected to the force, the correction mechanism 410 in this embodiment also includes a linkage assembly 416, which is connected between the extraction mechanism 420 and the mounting seat 411 to provide connection and guidance for the position adjustment of the extraction mechanism 420.

[0108] Specifically, the linkage assembly 416 includes a first guide member 4161 (preferably a guide rail), a second guide member 4162 (preferably a guide rail) and a rotation connection member 4163, wherein the first guide member 4161 is arranged at the bottom of the mounting seat 411, the second guide member 4162 is slidably connected to the first guide member 4161 through a slider, and the rotation connection member 4163 is slidably connected to the second guide member 4162 through a sliding seat, and specifically, the rotation connection member 4163 includes a rotating shaft and a bearing seat, the bearing seat is fixedly connected to the fixed plate 421 of the extraction mechanism 420, one end of the rotating shaft is rotatably connected to the bearing seat, and the other end is rotatably connected to the sliding seat, and the sliding seat is slidably connected to the second guide member 4162. The first guide member 4161 is arranged along the left-right direction or the front-back direction, the second guide member 4162 is arranged along the front-back direction or the left-right direction, and the first guide member 4161 and the second guide member 4162 are arranged perpendicular to each other. Based on this, when the extraction mechanism 420 is subjected to the force in the left and right directions, it can move along the guide member set in the left and right directions. When the extraction mechanism 420 is subjected to the force in the front and rear directions, it can move along the guide member set in the front and rear directions. When subjected to the action of torque, it can rotate a certain angle on the horizontal plane by rotating the connecting member 4163. Thus, through the mutual cooperation of the first guide member 4161, the second guide member 4162 and the rotating connecting member 4163, guidance can be provided for the extraction mechanism 420 in the left and right directions, the front and rear directions and the switching angles, so as to ensure that the movement of the extraction mechanism 420 is more stable and precise.

[0109] In this embodiment, considering the forward and backward movement of the battery string or the need to change the type of the battery string group, a deviation correction translation mechanism 450 is additionally provided.

[0110] Specifically, the deviation correcting translation mechanism 450 includes a second translation driving member 451, a second translation guiding member 452 and a translation connecting member 453, wherein the second translation driving member 451 adopts a combination of a motor and a screw, and can also adopt a cylinder (preferred), and the second translation guiding member 452 is preferably a guide rail, which is arranged along the front and rear direction, and the mounting seat 411 in the deviation correcting mechanism 410 is connected to the translation connecting member 453, thereby, the second translation driving member 451 can drive the translation connecting member 453 together with the deviation correcting mechanism 410 and the extraction mechanism 420 to move along the second translation guiding member 452.

[0111] When the deflection correction mechanism 410 and the extraction mechanism 420 are both provided in one group, the deflection correction translation mechanism 450 is also provided in one group, that is, it includes one group of translation connection members 453, one group of second translation drive members 451 and one group of second translation guide members 452, whereby the second translation drive member 451 can drive the translation connection member 453, the deflection correction mechanism 410 and the extraction mechanism 420 to move in the front-to-back direction to adjust the front-to-back position of the extraction mechanism 420 and the battery string thereon. When the deflection correction mechanism 410 and the extraction mechanism 420 are provided in multiple groups in the front-to-back direction (one group of deflection correction devices 400 corresponds to correcting a column of battery strings, and a column of battery strings is provided in multiple rows in the front-to-back direction. When the battery string is changed and the center distance between adjacent battery strings changes, it is necessary to adjust the front-to-back spacing between two adjacent groups of extraction mechanisms 420), multiple groups of translation connection members 453 and multiple groups of second translation drive members 451 are required, and the second translation guide member 452 can be provided in one group or multiple groups. Specifically, when a group of second translation guide members 452 is provided, multiple groups of translation connecting members 453 are all slidably connected to the group of second translation guide members 452. Under the driving action of multiple groups of second translation driving members 451, multiple groups of correction mechanisms 410 and multiple groups of extraction mechanisms 420 can move along the front-to-back direction with the corresponding translation connecting members 453, so as to adjust the spacing between two adjacent groups of extraction mechanisms 420 to adapt to the battery string group change; when multiple groups of second translation guide members 452 are provided, they correspond one by one to the multiple groups of translation connecting members 453. Under the driving action of multiple groups of second translation driving members 451, multiple groups of correction mechanisms 410 and multiple groups of extraction mechanisms 420 can move along the front-to-back direction with the corresponding translation connecting members 453 to adjust the front-to-back position between two adjacent groups of extraction mechanisms 420.

[0112] In this embodiment, the battery string correction device 400 also includes a correction lifting mechanism 440, which includes a second lifting drive member 441, a second lifting guide member 442 and a second lifting connection member 443. Specifically, the second lifting drive member 441 can be a combination of a motor and a screw rod, or a cylinder, etc. The second lifting guide member 442 adopts a guide rail, and the second lifting connection member 443 can adopt a plate-like structure, and the mounting seat 411 in the correction mechanism 410 is fixedly connected to the second lifting connection member 443, thereby, the second lifting drive member 441 can drive the second lifting connection member 443, the correction mechanism 410 and the extraction mechanism 420 to move up and down, so as to realize the extraction process of the battery string. It should be noted here that a group of correction mechanisms 410 and extraction mechanisms 420 can be set at the bottom of the second lifting connection member 443, and of course, multiple groups of correction mechanisms 410 and extraction mechanisms 420 arranged at intervals can also be set, so as to correct the deviation of multiple groups of battery strings at one time.

[0113] In this embodiment, the battery string correction device 400 also includes a detection mechanism 430, which can detect whether the battery string welding head has reached the welding station, so as to correct the battery string. Specifically, the detection mechanism 430 includes a detection component, which uses a CCD camera or a position sensor, preferably a CCD camera, which is connected to the control device of the device, and other actuators are also connected to the control device. Therefore, when the CCD camera detects that the welding head has not reached the welding station, the situation is transmitted to the control device in the form of a signal, and the control device analyzes and judges and issues instructions to the actuator to control the correction mechanism 410 to adjust the position of the extraction mechanism 420 and the battery string thereon, so as to improve the position accuracy of the battery string, thereby improving the welding accuracy between the battery string and the bus bar.

[0114] Furthermore, the detection mechanism 430 also includes a detection drive component and a detection guide component, wherein the detection drive component can be a combination of a motor and a screw rod, or a cylinder, etc. The detection guide component is arranged along the left and right directions, preferably a guide rail, whereby the detection component moves along the detection guide component under the driving action of the detection drive component to adjust the left and right position of the detection component, so as to facilitate the position detection of the battery string welding head.

[0115] The specific working process of the welding equipment provided in this embodiment is as follows:

[0116] The battery string arranged on the support is placed on the conveyor belt in the battery string transfer device 200, and is driven by a reduction motor to be sent to the first station; at this time, the first station is located below the battery string correction device 400 and the welding device 300 (also below the welding station), and the busbar preparation mechanism 110 is located on both sides of the welding station.

[0117] After the support seat and the battery string are in place, they are calibrated by the calibrating mechanism on the battery string transfer device 200, so as to calibrate and position the four positions of the support seat, front, back, left, and right. It should be noted here that the calibrating mechanism can be a cylinder carrying a roller, and of course, it can also refer to the existing technology, as long as the calibrating function can be achieved, which will not be elaborated here.

[0118] After the support seat is positioned, the CCD camera of the detection mechanism 430 is turned on to take a picture of the position of the welding head on the battery string and transmit it to the control device, which calculates the correction amount and feeds it back to the correction mechanism 410 for correction. It should be noted here that the control principle of the control device can adopt the existing technology and will not be elaborated here.

[0119] After the battery string correction device 400 is started, the correction lifting mechanism 440 drives the correction mechanism 410 and the extraction mechanism 420 to descend, and extract each row of battery strings respectively. Then the correction lifting mechanism 440 drives the correction mechanism 410 and the extraction mechanism 420 to rise to reach a first height, and the correction mechanism 410 drives the extraction mechanism 420 and the battery strings thereon to correct the left and right directions, front and back directions, and horizontal angles in the air, so that the welding strip heads of the battery string group at the upper, middle and lower positions are aligned with the welding position.

[0120] At the same time, the busbar preparation mechanism 110 cuts out a busbar of a set length; the first transfer component 121 is started, and the transfer and lifting component drives the vacuum suction cup to descend, suck the busbar, and rise to avoid the position; then the first transfer translation component drives the vacuum suction cup with the busbar to move toward the second transfer component 122; after it is in place, the transfer and lifting component drives the vacuum suction cup to descend, places the busbar on the welding platform 1221, and the busbar groove sucks the busbar; then, the second transfer translation component drives the welding platform 1221 to move toward the welding station, and at the same time, the heating rod preheats the welding platform 1221; the welding station is the area where the battery string welding strip head is facing, and is located above the support seat and below the first height, so that the welding strip heads at the upper, middle and lower positions are facing the corresponding three busbars, and at the same time, the working end of the welding device 300 is facing the welding strip head.

[0121] The deviation correcting lifting mechanism 440 drives the extracting mechanism 420 to descend to the second height (that is, the welding station), so that the welding strip head contacts the bus bar.

[0122] The welding device 300 is started, and the welding lifting mechanism 320 drives the welding mechanism 310 to descend, so that the pressing needle 312 presses the welding strip head and the bus bar it contacts, and the hot air enters the first cavity 3112 of the blowing component 311 through the hot air pipe, and then blows toward the pressing needle 312 and / or the welding position to heat the welding position to achieve welding.

[0123] After welding is completed, compressed air is blown into the first cavity 3112 through the air pipe and blown toward the pressure needle 312 and / or the welding machine position to cool down the welding position; at the same time, the air pipes on both sides of the busbar slot blow air toward the busbar slot through the blowing holes to accelerate cooling and complete a welding process.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding device, characterized in that: include: A busbar transfer device, used to transfer a busbar of a set length to a welding station; A battery string transfer device is used to transfer multiple battery strings after layout to an area close to the welding station; A battery string correction device, used for correcting the battery string; and A welding device for welding the welding strip heads on the battery string to the busbar; The welding device comprises a welding mechanism, which at least comprises a blowing member capable of blowing out welding hot air, and a pressing needle; The blowing component has a first cavity, the air outlet end of the first cavity is used to be opposite to the pressure needle and / or the weldment, and the air inlet end is used to be connected to the air supply device; The working end of the pressing needle protrudes from the blowing component and is used to press the weldment; A second cavity is also formed on the blowing component, and the pressure needle is arranged in the second cavity; The blowing component is provided with a hot air pipe and an air pipe which are connected to the air inlet end of the first cavity, the hot air pipe is connected to the hot air supply device, and the air pipe is connected to the air supply device; The busbar transfer device comprises a busbar preparation mechanism and a busbar transfer mechanism; The busbar preparation mechanism is used to prepare a busbar of a set length, and the busbar transfer mechanism is used to obtain the busbar prepared by the busbar preparation mechanism and transfer the busbar to a welding station; The busbar transfer mechanism includes a first transfer assembly and a second transfer assembly; The first transfer assembly is used to transfer the busbar prepared by the busbar preparation mechanism to the second transfer assembly; The second transfer assembly is used to transfer the busbar to the welding station; The second transfer assembly includes a welding platform and a second transfer translation member, the second transfer translation member includes a driving member and a guide member, the guide member is arranged toward the welding station, the welding platform is slidably connected to the guide member, and the driving member is connected to and can drive the welding platform to move along the guide member toward the welding station; The welding platform is provided with a busbar groove, the bottom of the busbar groove is provided with an air hole, and the air hole is connected to an external air extraction device.

2. The welding device according to claim 1, characterized in that The welding device comprises a welding translation mechanism, and the welding translation mechanism comprises a first translation driving member and a first translation guiding member; The welding mechanism is slidably connected to the first translation guide member, and the output end of the first translation drive member is connected to the welding mechanism; The first translation driving member can drive the welding mechanism to move relative to the first translation guiding member to adjust the front and rear position of the welding mechanism.

3. The welding equipment according to any one of claims 1 to 2, characterized in that: The welding device comprises a welding lifting mechanism, wherein the welding lifting mechanism comprises a first lifting driving member, a first lifting guiding member and a first lifting connecting member; The first lifting connection member is slidably connected to the first lifting guide member, the output end of the first lifting drive member is connected to the first lifting connection member, and the welding mechanism is connected to the first lifting connection member; The first lifting driving component can drive the first lifting connecting component and the welding mechanism to move relative to the first lifting guiding component to adjust the upper and lower positions of the welding mechanism so that the working end of the welding mechanism is close to or away from the weldment.

4. The welding device according to claim 1, characterized in that: The battery string deviation correction device comprises a deviation correction mechanism and an extraction mechanism for extracting the battery string; The deflection correction mechanism comprises a mounting seat and at least one set of first deflection correction drive components and at least two sets of second deflection correction drive components arranged on the mounting seat; The extraction mechanism is connected to the mounting seat; At least one set of the first deviation-correcting driving components is in driving connection with the extracting mechanism and is capable of driving the extracting mechanism to move in the left-right direction relative to the mounting seat; At least two groups of the second correcting drive components are transmission-connected to the extraction mechanism, and at least two groups of the second correcting drive components cooperate with each other to drive the extraction mechanism to move in the front-to-back direction relative to the mounting base and / or rotate in the horizontal plane relative to the mounting base.

5. The welding device according to claim 4, characterized in that The deflection correction mechanism comprises a plurality of guide seats respectively used to cooperate with the first deflection correction drive assembly and the second deflection correction drive assembly, and the guide seats are fixedly connected to the extraction mechanism; A guide groove is provided on the guide seat, and guide components are provided at the output ends of the first deviation-correcting drive component and the second deviation-correcting drive component, and the guide components match the guide groove; The guide assembly includes an eccentric shaft and a follower, wherein the follower is connected to the output end of the eccentric shaft, and the input end of the eccentric shaft is used for transmission connection with the corresponding first deviation correcting drive assembly or the second deviation correcting drive assembly; The first deviation-correcting driving assembly can drive the follower to squeeze the left and right side walls of the corresponding guide groove through the eccentric shaft, and drive the extraction mechanism to move in the left and right directions through the guide seat used in conjunction with the first deviation-correcting driving assembly; The second deviation-correcting drive assembly can drive the follower to extrude the corresponding front and rear side walls of the guide groove through the eccentric shaft, and drive the extraction mechanism to move in the front and rear directions or rotate in the horizontal plane through the guide seat used in conjunction with the second deviation-correcting drive assembly.

6. The welding device according to claim 4 or 5, characterized in that: The deviation-correcting mechanism comprises a linkage component, and the mounting seat and the extraction mechanism are connected via the linkage component; The linkage assembly comprises a first guide member, a second guide member and a rotation connection member, wherein the first guide member is fixedly connected to the mounting seat, and the second guide member is slidably connected to the first guide member; the first guide member is arranged along the front-to-back direction, and the second guide member is arranged along the left-to-right direction, or the first guide member is arranged along the left-to-right direction, and the second guide member is arranged along the front-to-back direction; A sliding seat is provided between the rotating connection member and the second guide member. The sliding seat is slidably connected to the second guide member. The first end of the rotating connection member is connected to the sliding seat, and the second end is connected to the extraction mechanism.

7. The welding device according to claim 4, characterized in that The battery string deviation correction device comprises a deviation correction translation mechanism, and the deviation correction translation mechanism comprises a second translation driving member, a second translation guiding member, and a translation connecting member; The translation connection member is slidably connected to the second translation guide member, the translation connection member is connected to the output end of the second translation drive member, and the mounting seat in the deviation correction mechanism is connected to the translation connection member; The second translation driving member can drive the translation connecting member and the deviation correcting mechanism to move in the front-rear direction relative to the second translation guiding member to adjust the front-rear position of the deviation correcting mechanism.

8. The welding device according to claim 4 or 7, characterized in that: The battery string deviation correction device comprises a deviation correction lifting mechanism, and the deviation correction lifting mechanism comprises a second lifting driving component, a second lifting guide component and a second lifting connecting component; The second lifting connection member is slidably connected to the second lifting guide member, the second lifting connection member is drivingly connected to the output end of the second lifting drive member, and the mounting seat is connected to the second lifting connection member; The second lifting driving member can drive the second lifting connecting member and the correcting mechanism to move relative to the second lifting guiding member to adjust the upper and lower positions of the correcting mechanism so that the working end of the correcting mechanism is close to or away from the battery string.

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