Tab welding equipment and battery production line

Abstract

The utility model discloses a tab welding device and a battery production line, and relates to the technical field of battery processing, the tab welding device is provided with a plurality of stations, the plurality of stations comprise a recognition station and a welding station, the tab welding device comprises a conveying device, a recognition device and a welding device, the conveying device is movably arranged, the movement stroke of the conveying device passes through the plurality of stations, and the recognition device is connected with the welding device. The conveying device is provided with a welding area, and the welding area is configured to allow the tabs of the naked battery cells to be overlapped with the switching pieces; the identification device is used for identifying the position of the welding area and generating a corresponding identification signal; according to the technical scheme, the welding device can adjust the position of the welding device on the welding station according to the identification signal, so that after the conveying device reaches the welding station, the welding device can be accurately aligned to the welding area of the conveying device, and the welding efficiency is improved. And the problems of poor positioning precision and low welding efficiency of manual ultrasonic welding are solved.

Description

Technical Field

[0001] This application relates to the field of battery processing technology, and in particular to a tab welding device and a battery production line. Background Technology

[0002] In the field of new energy batteries, ultrasonic welding of the tabs and adapters of hard-shell bare cells is a key step in the lithium battery production process. To meet the diverse production needs of small and medium-scale or sample trial environments, manual ultrasonic welding is often used. However, manual ultrasonic welding is affected by manual operation and generally suffers from poor tab positioning accuracy and low welding efficiency. Utility Model Content

[0003] The main purpose of this application is to propose a tab welding equipment and a battery production line, which aims to improve the problems of poor tab positioning accuracy and low welding efficiency in manual ultrasonic welding process.

[0004] Firstly, the electrode welding equipment proposed in this application has multiple workstations, including an identification workstation and a welding workstation. The electrode welding equipment includes: a conveying device, which is movably arranged, and whose travel path passes through the multiple workstations. The conveying device has a welding area, which is configured to allow the electrode of the bare battery cell to overlap with the adapter piece; an identification device, the identification range of which covers the identification workstation, and the identification device is configured to identify the position of the welding area of ​​the conveying device at the identification workstation and generate a corresponding identification signal; and a welding device, which is movably arranged in a horizontal direction, and can reach the welding workstation within its travel path. The welding device is configured to adjust its position at the welding workstation according to the identification signal so as to align with the welding area of ​​the conveying device in a vertical direction corresponding to the horizontal direction.

[0005] The technical solution provided in this application uses a conveying device for positioning bare battery cells and adapter pieces. Its welding area allows the positioned adapter pieces and the tabs of the bare battery cells to overlap vertically. As the conveying device moves, it can successively move to the identification station and the welding station. At the identification station, the identification device can identify the position of the welding area of ​​the conveying device and send a corresponding identification signal. The welding device can then adjust its horizontal position according to the identification signal, so that when the conveying device arrives at the welding station, the welding device can align itself vertically with the welding area of ​​the conveying device. This achieves automatic determination of the welding area and automatic positioning of the welding device, improving the problems of poor tab positioning accuracy and low tab welding efficiency in current manual ultrasonic welding.

[0006] In some embodiments, the plurality of workstations further includes a loading workstation, and the identification workstation is arranged to overlap with the loading workstation.

[0007] In the above technical solution, the identification station and the loading station are set up to overlap. This means that while the bare battery cells and adapter pieces are being loaded onto the conveying device, the position of the welding area of ​​the conveying device can be automatically identified by the identification device. The welding device can pre-adjust its position, and after the conveying device arrives at the welding station, the welding device can directly weld the overlapping tabs and adapter pieces at the welding area. This improves welding efficiency and speeds up the production cycle. Moreover, the overlapping of the identification station and the loading station is also conducive to optimizing the spatial layout of the tab welding equipment and improving space utilization.

[0008] In some embodiments, the conveying device includes a conveying seat and a positioning clamp, wherein the conveying seat is movably disposed and the positioning clamp is detachably disposed on the conveying seat;

[0009] The positioning fixture is used to load and position the bare battery cell and the adapter plate, and the positioning fixture has the welding area.

[0010] In the above technical solution, the conveying device includes a conveying seat and a positioning fixture, and the positioning fixture is detachably mounted on the conveying seat. This means that the positioning fixture can pre-position the bare battery cell and the adapter piece, and then directly install them onto the conveying seat to complete the loading. On the one hand, this shortens the loading time, and on the other hand, it allows for the replacement of various types of positioning fixtures according to production needs, thereby meeting the electrode welding requirements of various types of bare battery cells.

[0011] In some embodiments, a foolproof positioning structure is provided between the positioning fixture and the conveyor seat, the foolproof positioning structure being used to limit the installation direction of the positioning fixture on the conveyor seat.

[0012] In the above technical solution, setting a foolproof positioning structure between the positioning fixture and the conveyor seat can significantly reduce the probability of the positioning fixture being installed backwards on the conveyor seat, which in turn reduces the probability of the electrode welding equipment failing and shutting down.

[0013] In some embodiments, the foolproof positioning structure includes two positioning components, each including a positioning pin and a positioning hole that cooperate with each other, the positioning pin and the positioning hole being respectively disposed on the conveyor seat and the positioning fixture;

[0014] The two positioning holes are configured with different shapes and / or sizes so that the positioning pin is inserted into the corresponding positioning hole.

[0015] In the above technical solution, the positioning holes and positioning pins of the positioning component are set to cooperate with each other. Since the shapes or sizes of the two positioning holes are different, there is a one-to-one correspondence between the positioning holes and the positioning pins. That is, the positioning pins can only be inserted into the corresponding positioning holes, thereby reducing the probability of the positioning fixture being installed backwards.

[0016] In some embodiments, the welding device is movably arranged along a first horizontal direction, and the conveying device is movably arranged along a second horizontal direction;

[0017] The welding area includes two partial welding areas, which are distributed along the first horizontal direction and are respectively used for the positive and negative tabs of the bare battery cell to overlap with the corresponding adapter pieces.

[0018] In the above technical solution, the two local welding areas of the welding area are distributed along the first horizontal direction, which is the same as the direction of movement of the welding device. The direction of movement of the conveying device is the second horizontal direction, which is set at an angle to the first horizontal direction. This design layout allows the welding device to actively detach from the movement stroke of the conveying device after welding the electrode tab and the adapter piece at the welding area, thereby reducing the probability of motion interference between the conveying device and the welding device.

[0019] In some embodiments, the welding station includes two partial welding stations, which are distributed along the second horizontal direction;

[0020] The welding device includes two welding structures, which are respectively set up for the two local welding stations and are located on both sides of the conveying device along the first horizontal direction.

[0021] In the above technical solution, the welding station is divided into two local welding stations, and each local welding station is equipped with a corresponding welding structure. The electrode lugs and adapter pieces in the two local welding areas can be welded sequentially by the two welding structures, which helps to improve the welding cycle of a single welding structure. Moreover, the two welding structures are located on both sides of the conveying device along the first horizontal direction, which also helps to rationalize the layout of the equipment space and shorten the travel of the welding structure along the first horizontal direction.

[0022] In some embodiments, the electrode welding equipment further includes a positioning detection component, which includes a marking part and a detection part. One of the marking part and the detection part is disposed on the conveying device corresponding to the local welding area, and the other part is disposed on the welding device.

[0023] In the above technical solution, after the welding device adjusts its position according to the identification signal and the conveying device arrives at the welding station, the detection unit can detect the marking unit, thereby determining that the conveying device has arrived at the welding station. Since the marking unit and the detection unit are set to correspond to the local welding area, it means that the position of the welding device in the vertical direction corresponds to the welding area, which improves the automatic positioning accuracy of the welding device relative to the welding area of ​​the conveying device.

[0024] In some embodiments, the detection unit is configured as a photoelectric sensor, and the marking unit is correspondingly configured as a reflective unit.

[0025] In the above technical solution, the detection principle of the photoelectric sensor and the reflector is as follows: the photoelectric sensor continuously emits laser light in one direction. When the reflector moves into the laser's output path, the laser light can be reflected back to the photoelectric sensor. The photoelectric sensor determines the position of the reflector by detecting the returned laser light, that is, the position of the welding device relative to the conveying device. This detection method of photoelectric sensor and reflector has high detection accuracy and can ensure the positioning accuracy of the welding device.

[0026] In some embodiments, the local welding area includes two same-pole welding areas distributed along the second horizontal direction, the two same-pole welding areas being respectively used for the same-pole tabs of two bare cells to overlap with one of the adapter pieces;

[0027] Two marking portions are provided, and the two marking portions are provided on the conveying device and respectively correspond to the two same-polarity welding areas;

[0028] The welding device is also movably arranged along the second horizontal direction.

[0029] In the above technical solution, the local welding area includes two same-pole welding areas distributed along the second horizontal direction, which means that the electrode welding equipment can meet the electrode welding requirements of dual bare cells. Based on this, the marking part is set on the conveying device corresponding to the two same-pole welding areas respectively, so that the positioning status of the two same-pole welding areas can be identified by a photoelectric sensor, reducing the setting cost of the positioning detection component.

[0030] In some embodiments, the welding apparatus includes an ultrasonic welding head and a welding seat, the ultrasonic welding head and the welding seat being respectively disposed on both sides of the welding area in the vertical direction, and configured to move closer to and further away from each other.

[0031] In the above technical solution, after the conveying device transfers to the welding station, the ultrasonic welding head and the welding seat can move close to each other and finally abut against the electrode tab and the adapter plate respectively. The welding seat can provide support for the adapter plate, ensuring that the ultrasonic welding head is firmly welded, while preventing the adapter plate from being deformed or displaced under pressure.

[0032] In some embodiments, the welding area of ​​the conveying device is provided with a clearance hole that extends through the vertical direction;

[0033] The welding seat is movably disposed along the vertical direction, and the welding seat is used to extend into the clearance hole and abut against the adapter piece.

[0034] In the above technical solution, by opening clearance holes in the welding area, the welding seat can directly contact the adapter piece through the clearance holes, reducing the transmission path of the supporting force and ensuring that the adapter piece is stably supported.

[0035] In some embodiments, the conveying device is provided with a positioning groove for positioning and placing the adapter piece.

[0036] The clearance hole extends through the bottom wall of the positioning groove.

[0037] In the above technical solution, during the process of feeding the transfer piece to the conveying device, the positioning groove can provide a stable and accurate positioning foundation for the transfer piece, which is conducive to improving the feeding efficiency of the transfer piece and reducing the probability of the transfer piece shifting during the flow of the conveying device.

[0038] In some embodiments, the identification device includes a barcode scanner for identifying the identification code of the bare battery cell.

[0039] In the above technical solution, barcode scanners have the advantage of low cost compared to identification devices such as vision cameras, and the cost of building the supporting control system is also significantly reduced.

[0040] Secondly, this application also proposes a battery production line, including tab welding equipment. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0042] Figure 1 A schematic diagram of a structure of an embodiment of the electrode welding equipment provided in this application;

[0043] Figure 2 for Figure 1 A schematic diagram showing the relative structures of the welding device and the conveying device.

[0044] Figure 3 for Figure 2 Exploded view of the conveyor system;

[0045] Figure 4 for Figure 3 A top view of the positioning fixture;

[0046] Figure 5 for Figure 4 Schematic diagram of the structure of section AA;

[0047] Figure 6 for Figure 5 A bottom view of the positioning fixture.

[0048] Explanation of icon numbers:

[0049] 100. Electrode welding equipment;

[0050] 1. Installation platform; 11. Drive guide rail; 1a. Loading station; 1b. Identification station; 1c. Welding station; 11c. Partial welding station; 1d. Unloading station; 2. Conveying device; 21. Conveying seat; 211. Mounting crossbar; 22. Positioning fixture; 22a. Bare cell positioning area; 22b. Adapter piece positioning area; 22c. Welding area; 221c. Partial welding area; 221c. Same pole welding area; 221. Clearance hole; 222 1. Positioning groove; 23; Foolproof positioning structure; 23a. Positioning component; 231. Positioning pin; 232. Positioning hole; 232a. First positioning hole; 232b. Second positioning hole; 3. Identification device; 3a. Barcode scanner; 4. Welding device; 41. Welding structure; 41a. Welding seat; 41b. Ultrasonic welding head; 5. Position detection component; 51. Detection section; 51a. Photoelectric sensor; 52. Marking section; 52a. Reflective section; 6. Welding cover plate;

[0051] 200. Bare battery cell; 210. Electrode tab; 300. Adapter plate;

[0052] X represents the vertical direction; Y represents the first horizontal direction; and Z represents the second horizontal direction.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

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

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

[0058] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0059] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0060] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0061] In the field of new energy batteries, ultrasonic welding of the tabs and adapter plates of hard-shell bare cells is a key step in the lithium battery production process. Current ultrasonic welding includes automatic ultrasonic welding and manual ultrasonic welding.

[0062] Automatic ultrasonic welding equipment, with its high-precision positioning system, can significantly improve the efficiency of electrode positioning and electrode welding. Based on this advantage, automatic ultrasonic welding equipment is usually designed for products of specific specifications, making it suitable for large-scale enterprise production environments. However, in environments that require frequent product changes or small-batch, multi-variety production, automatic ultrasonic welding equipment has the disadvantage of insufficient flexibility. Changing products or adjusting production requirements requires a long time to modify the automatic ultrasonic welding equipment.

[0063] Currently, in order to meet the diverse production needs of small and medium-sized scale or sample trial production environments, manual ultrasonic welding is often used instead of automatic ultrasonic welding. However, although manual ultrasonic welding has significant advantages in terms of flexibility and cost, it requires high skill and experience from operators, and the electrode positioning accuracy is greatly affected by manual operation. It usually requires repeated manual measurement and adjustment of the positioning of the bare cell electrode to ensure that the overlap position of the electrode and the adapter piece is accurately aligned with the ultrasonic welding head. This leads to the common problems of poor electrode positioning accuracy and low electrode welding efficiency in manual ultrasonic welding.

[0064] Analysis of the above reasons shows that when meeting the diverse production needs of small- to medium-scale or sample trial production environments, manual operation has a significant impact on the positioning accuracy and welding efficiency of the electrode tabs. Automatic ultrasonic welding equipment can be referenced, using a conveyor device to transport the bare battery cell and adapter plate. An identification device identifies the type of the bare battery cell, and then determines the position of the electrode tab and adapter plate on the conveyor device based on the identified type. Finally, the position of the welding device is adjusted according to the preset coordinate parameters of the welding device relative to the conveyor device, thereby achieving precise alignment of the welding device relative to the electrode tab and adapter plate, realizing semi-automatic welding positioning.

[0065] In view of this, this application provides a tab welding device, which can at least improve the problems of poor tab positioning accuracy and low tab welding efficiency in manual ultrasonic welding. To facilitate understanding of the tab welding device provided in this application, the following description is provided in conjunction with the accompanying drawings. Figure 1 A schematic diagram of a structure of an embodiment of the electrode welding equipment provided in this application; Figure 2 for Figure 1 A schematic diagram showing the relative structures of the welding device and the conveying device. Figure 3 for Figure 2 Exploded view of the conveyor system; Figure 4 for Figure 3A top view of the positioning fixture; Figure 5 for Figure 4 Schematic diagram of the structure of section AA; Figure 6 for Figure 5 A bottom view of the positioning fixture.

[0066] Please see Figure 1 and Figure 2 In some embodiments, the tab welding equipment 100 proposed in this application has multiple stations, including a loading station 1a, an identification station 1b, a welding station 1c, and a unloading station 1d. The tab welding equipment 100 includes a conveying device 2, an identification device 3, and a welding device 4. The conveying device 2 is movably arranged, and its travel path passes through multiple stations. The conveying device 2 has a welding area 22c, which is used for the tab 210 of the bare battery cell 200 and the adapter piece 300 to overlap. The identification range of the identification device 3 covers the identification station 1b. The identification device 3 is configured to identify the position of the welding area 22c of the conveying device 2 at the identification station and generate a corresponding identification signal. The welding device 4 is movably arranged in the horizontal direction. The welding device 4 can reach the welding station 1c within its travel path. The welding device 4 is configured to adjust its position at the welding station 1c according to the identification signal so that it can be aligned with the welding area 22c of the conveying device 2 in the vertical direction X corresponding to the horizontal direction.

[0067] It should be noted that the "conveying device 2" can be arranged in various ways, such as in a straight line, a curved line, or a circular rotation. The specific arrangement depends on the layout of the multiple workstations. For example, when the multiple workstations are arranged in a straight line, the conveying device 2 can be arranged in a straight line, as long as it can pass through multiple workstations within its travel range. The conveying device 2 has a welding area 22c, which is used for the overlap of the tab 210 of the bare battery cell 200 and the adapter plate 300. That is, the conveying device 2 has a bare battery cell positioning area 22a and an adapter plate positioning area 22b. The bare battery cell positioning area 22a is used for positioning the bare battery cell 200, and the adapter plate positioning area 22b is used for positioning the adapter plate 300. The bare battery cell positioning area 22a and the adapter plate positioning area 22b partially overlap, defining the welding area 22c. The specific location of the welding area 22c is at the end face of the conveying device 2 in the vertical X direction.

[0068] There are many types of structures for the “identification device 3”. For example, the identification device 3 can be a vision camera or a barcode scanner. It usually has a certain identification range. Since the identification range of the identification device 3 covers the identification station 1b, the identification device 3 can identify the welding area 22c of the conveying device 2 that flows through the identification station 1b. The identification device 3 can be directly set in the identification station 1b, or it can be set in other positions and aligned with the identification station 1b. This embodiment does not limit this.

[0069] After recognizing the welding area 22c of the conveyor 2, the recognition device 3 generates a recognition signal. This recognition signal controls the welding device 4 to adjust its position in the horizontal direction and position itself at the welding station 1c. Therefore, the recognition signal includes at least the coordinates of the welding area 22c. Specifically, the conveyor 2 has a fixed coordinate reference point, which can be the origin or an intermediate coordinate point determined from the origin. Regardless, the fixed coordinate reference point is determined after the conveyor 2 arrives at and positions itself at the welding station 1c. Based on this, the recognition device 3 can be a CCD camera. The camera directly identifies the position of the welding area 22c relative to the fixed coordinate reference point by taking pictures, so as to obtain the position coordinate point of the welding area 22c; the identification device 3 can also be a barcode scanning probe, which identifies the identification code set on the bare cell 200 by scanning the code. The identification code contains the type information of the bare cell 200, including the bare cell thickness information, the tab width information and the tab spacing information. By identifying and obtaining its type information, the position of its tab 210 can be determined, and the position coordinate point of the welding area 22c where the tab 210 and the adapter piece 300 overlap is calculated relative to the fixed coordinate reference point.

[0070] The welding device 4 automatically adjusts its horizontal position based on the position coordinates contained in the identification signal. This is so that when the conveyor 2 arrives at the welding station 1c, the welding device 4 can align itself with the welding area 22c of the conveyor 2 in the vertical direction X. For the scenario of welding the electrode tab 210 and the adapter piece 300, the specific type of "welding device 4" is usually an ultrasonic welding device, but the possibility of a laser welding device cannot be ruled out. Regardless of the type, the welding device 4 typically has a welding head oriented in the vertical direction X. The welding device 4 aligns itself with the welding area 22c of the conveyor 2 in the vertical direction X using its welding head, thereby achieving the welding of the electrode tab 210. 10 is welded to the adapter piece 300; the welding device 4 moves in a horizontal direction, specifically it can move in a single horizontal direction, such as in the first horizontal direction Y, or it can move in multiple horizontal directions, such as in both the first horizontal direction Y and the second horizontal direction Z. Regardless of the mode of movement, it is related to the layout position of the welding area 22c on the conveying device 2. For example, when the welding area 22c is laid out in the first horizontal direction Y, the welding device 4 needs to be movable in at least the first horizontal direction Y in order to cope with the change in position of the welding area 22c in the first direction when the product is changed. In this embodiment, the specific horizontal direction of the movement of the welding device 4 is not limited.

[0071] The conveying device 2, the identification device 3, and the welding device 4 can be installed on different mounting bases, or they can be installed on the same mounting base simultaneously, for example... Figure 1 In the embodiment shown, the conveying device 2, the identification device 3, and the welding device 4 are all installed on an installation platform 1.

[0072] The technical solution provided in this application uses a conveying device 2 for positioning bare battery cell 200 and adapter plate 300. Its welding area 22c allows the positioned adapter plate 300 and the tab 210 of bare battery cell 200 to overlap in the vertical direction X. As the conveying device 2 moves, it can successively move to the identification station 1b and the welding station 1c. At the identification station 1b, the identification device 3 can identify the position of the welding area 22c of the conveying device 2 and send a corresponding identification signal. The welding device 4 can adjust its horizontal position according to the identification signal, so that when the conveying device 2 arrives at the welding station 1c, the welding device 4 can be aligned with the welding area 22c of the conveying device 2 in the vertical direction X. This realizes the automatic determination of the welding area 22c and the automatic positioning of the welding device 4, which improves the problems of poor tab positioning accuracy and low tab welding efficiency in current manual ultrasonic welding. The tab welding equipment 100 can significantly reduce the scrap rate and improve the overall production efficiency through high-precision positioning and welding.

[0073] During product changeover, this operation method, which automatically identifies the cell type through the identification device 3 and automatically positions the welding area 22c through the welding device 4, can significantly shorten the changeover time and has high flexibility. It can meet the needs of frequent product changes or small-batch, multi-variety production. Moreover, it can reduce manual intervention. After the operator feeds the bare cell 200 and the adapter piece 300 to the conveying device 2, confirms the parameters and starts the equipment, the equipment automatically completes the positioning and welding, reducing the requirements for manual operation skills and reducing labor costs.

[0074] Please see Figure 1 In some embodiments, the multiple workstations also include a loading workstation 1a, and the identification workstation 1b is set to overlap with the loading workstation 1a.

[0075] Normally, identification station 1b is set after loading station 1a. However, considering that there is no mutually exclusive relationship between "identification station 1b" and "loading station 1a", they are set to overlap in this embodiment.

[0076] In the above technical solution, the identification station 1b and the loading station 1a are set to coincide, which means that while the bare battery cell 200 and the adapter piece 300 are being loaded onto the conveying device 2, the position of the welding area 22c of the conveying device 2 can be automatically identified by the identification device 3. The welding device 4 can pre-adjust its position, and after the conveying device 2 arrives at the welding station 1c, the welding device 4 can directly weld the overlapping tab 210 and the adapter piece 300 at the welding area 22c. This improves welding efficiency and accelerates the production cycle. Moreover, the coincidence of the identification station 1b and the loading station 1a is also conducive to optimizing the spatial layout of the tab welding equipment 100 and improving the utilization rate of space.

[0077] In other embodiments, the multiple workstations also include unloading workstation 1d, identification workstation 1b (which is also loading workstation 1a), welding workstation 1c, and unloading workstation 1d distributed sequentially along the travel path of conveying device 2.

[0078] Please see Figure 2 and Figure 3 In some embodiments, the conveying device 2 includes a conveying seat 21 and a positioning clamp 22. The conveying seat 21 is movably disposed, and the positioning clamp 22 is detachably disposed on the conveying seat 21. The positioning clamp 22 is used to load and position the bare battery cell 200 and the adapter piece 300. The positioning clamp 22 has a welding area 22c.

[0079] The movable arrangement of the conveyor seat 21 means that, in the conveying device 2, the conveyor seat 21 serves as the power source for the positioning fixture 22. The positioning fixture 22 is used to load and position the bare battery cell 200 and the adapter piece 300. The positioning fixture 22 has a welding area 22c, which means that the positioning fixture 22 is the main carrier of the bare battery cell 200 and the adapter piece 300. The positioning fixture 22 is detachably set on the conveyor seat 21 so that the bare battery cell 200 and the adapter piece 300 before welding, and the bare battery cell 200 and the adapter piece 300 after welding can be replaced together with the positioning fixture 22.

[0080] In the above technical solution, the conveying device 2 is provided with a conveying seat 21 and a positioning fixture 22. The positioning fixture 22 is detachably mounted on the conveying seat 21, which means that the positioning fixture 22 can pre-position the bare battery cell 200 and the adapter piece 300, and then directly install the positioning fixture 22 as a whole onto the conveying seat 21 to complete the loading. On the one hand, it can shorten the loading operation time and reduce the waiting time of the electrode welding equipment 100. On the other hand, it can also replace various types of positioning fixtures 22 according to production needs and share a set of conveying seat 21, thereby meeting the electrode 210 welding requirements of various types of bare battery cells 200.

[0081] Please see Figure 3 and Figure 6 In some embodiments, a foolproof positioning structure 23 is provided between the positioning fixture 22 and the conveyor seat 21. The foolproof positioning structure 23 is used to limit the installation direction of the positioning fixture 22 on the conveyor seat 21.

[0082] The concept of "mistake prevention" is of great significance in the production process, as it can effectively avoid problems such as misplacement or reverse installation of equipment. "Mistake prevention positioning structure 23" refers to a structure that can simultaneously prevent mistakes and provide positioning for both the positioning fixture 22 and the conveyor seat 21. For example, the mistake prevention positioning structure 23 may include a mistake prevention component and a positioning component 23a, which achieve the purpose of mistake prevention and positioning respectively. There are various specific structural types of the mistake prevention positioning structure 23, and this embodiment does not limit them.

[0083] In the above technical solution, the positioning fixture 22 is provided with a foolproof positioning structure 23 between the positioning fixture 22 and the conveyor seat 21, which can significantly reduce the probability of the positioning fixture 22 being installed backwards on the conveyor seat 21, that is, reduce the probability of the electrode welding equipment 100 failing and shutting down.

[0084] Please see Figure 6In some embodiments, the foolproof positioning structure 23 includes two positioning components 23a; the positioning component 23a includes a positioning pin 231 and a positioning hole 232 that cooperate with each other, the positioning pin 231 and the positioning hole 232 are respectively disposed on the conveyor seat 21 and the positioning fixture 22; wherein, the two positioning holes 232 are configured with different shapes and / or sizes so that the positioning pin 231 is inserted into the corresponding positioning hole 232.

[0085] The "positioning component 23a" consists of a positioning pin 231 and a positioning hole 232. Two sets of positioning components 23a can achieve the positioning of the conveyor seat 21 and the positioning fixture 22. Based on this, "the two positioning holes 232 have different shapes" means that the cross-sectional shapes of the two positioning holes 232 should have a significant difference; for example, one positioning hole 232 is circular, and the other is square. "The two positioning holes 232 have different dimensions" means that the cross-sectional dimensions of the two positioning holes 232 should have a significant difference. The difference should be such that, when installing the positioning fixture 22, it is impossible to insert the positioning pin 231 into the misaligned positioning hole 232 manually without damaging the positioning component 23a. For example... Figure 6 In the embodiment shown, the two positioning holes 232 include a first positioning hole 232a and a second positioning hole 232b. The diameter of the first positioning hole 232a is significantly larger than the diameter of the second positioning hole 232b. This embodiment does not limit the specific range of the size difference between the two positioning holes 232. Of course, the two positioning holes 232 may also have differences in both shape and size.

[0086] In the above technical solution, the positioning hole 232 and the positioning pin 231 of the positioning component 23a are configured to cooperate with each other. Since the two positioning holes 232 are configured with different shapes or sizes, there is a one-to-one correspondence between the positioning hole 232 and the positioning pin 231. That is, the positioning pin 231 can only be inserted into the corresponding positioning hole 232, thereby reducing the probability of the positioning fixture 22 being installed backwards.

[0087] Please see Figure 1 In some embodiments, the welding device 4 is movably arranged along the first horizontal direction Y, and the conveying device 2 is movably arranged along the second horizontal direction Z; the welding area 22c includes two local welding areas 221c, which are distributed along the first horizontal direction Y and are respectively used for the positive electrode tab 210 and negative electrode tab 210 of the bare cell 200 to overlap with the corresponding adapter piece 300.

[0088] It should be noted that the first horizontal direction Y and the second horizontal direction Z are two intersecting directions in the horizontal direction, which can also be understood as the two directions being set at an angle. The angle can be any value between 0° and 180° (excluding the values ​​at 0° and 180°). The specific value of the angle is not limited in the embodiments of this application, but under normal circumstances, the first horizontal direction Y and the second horizontal direction Z are perpendicular to each other, that is, they are set at a 90° angle.

[0089] "The conveying device 2 is movably positioned along the second horizontal direction Z." The driving structure of the conveying device 2 can be varied, for example... Figure 1 In the embodiment shown, the conveying device 2 is driven by the drive rail 11, which has at least a rail section extending along the second horizontal direction Z. The rail section passes through multiple workstations. In some embodiments, the drive rail 11 is arranged in a ring. That is, after the conveying device 2 reaches the unloading workstation 1d and the bare battery cell 200 after welding is manually unloaded, the conveying device 2 can automatically return to the loading workstation 1a without affecting the operation of other workstations.

[0090] In the above technical solution, the two local welding areas 221c of the welding area 22c are distributed along the first horizontal direction Y, which is the same as the direction of movement of the welding device 4. The direction of movement of the conveying device 2 is the second horizontal direction Z, which is set at an angle to the first horizontal direction Y. This design layout allows the welding device 4 to actively disengage from the movement stroke of the conveying device 2 after the electrode 210 and the adapter piece 300 at the welding area 22c are welded, thereby reducing the probability of motion interference between the conveying device 2 and the welding device 4.

[0091] For different types of bare battery cells 200, after they are fed into the conveying device 2, the two local welding areas 221c corresponding to the two tabs 210 of the bare battery cell 200 are generally symmetrically distributed in the first horizontal direction Y with respect to the fixed coordinate reference point of the conveying device 2. The position of this fixed coordinate reference point may have a solid structure, for example... Figure 3 In the illustrated embodiment, the conveyor seat 21 has a mounting crossbar 211 extending along the second horizontal direction Z. The center point of the mounting crossbar 211 is a fixed coordinate reference point. Two local welding areas 221c are symmetrically arranged with respect to the center point of the mounting crossbar 211. Based on this embodiment, the logic of the identification device 3 in calculating the welding area 22c between the tab 210 and the adapter piece 300 according to the type of the bare cell 200 is as follows:

[0092] Taking the initial position of the welding device 4 away from the conveying device 2 as the origin of the coordinate system (0, 0, 0), this origin point and the center point of the mounting crossbar 211 are both on the first horizontal direction Y-axis, and there is a coordinate difference S between them. That is, the coordinates of the center point of the mounting crossbar 211 are (S, 0, 0). The identification device 3 can determine the local welding area 221c corresponding to the two tabs 210 of the bare cell 200 according to the type of the bare cell 200. There is a coordinate difference ΔX between the local welding area 221c and the center point of the mounting crossbar 211. Therefore, the coordinates of the two local welding areas 221c can be determined as (S-ΔX, 0, 0) and (S+ΔX, 0, 0). For the welding scenario of the double bare cell 200 with four tabs 210, the local welding area 221c includes two same-pole welding areas 2211c distributed along the second horizontal direction Z. The two same-pole welding areas 2211c are respectively used to supply the same poles of the two bare cells 200. Ear 210 overlaps with an adapter piece 300. The distance between the two identical ear 210 along the second horizontal direction Z is ΔY. Therefore, the coordinates of the same polarity welding area 2211c of the two identical ear 210 (negative ear 210) are (S-ΔX, ΔY, 0) and (S-ΔX, -ΔY, 0), respectively. The coordinates of the same polarity welding area 2211c of the other two identical ear 210 (positive ear 210) are (S+ΔX, ΔY, 0) and (S+ΔX, -ΔY, 0), respectively. Considering the difference in thickness of the ear 210 of different types of bare cells 200, the coordinate of the welding surface of the ear 210 of a conventional bare cell 200 along the vertical direction X is defined as 0. When the type of bare cell 200 changes, the change in the welding surface of the ear 210 of the bare cell 200 along the vertical direction X is ΔZ. Substituting ΔZ into the coordinates, the accurate coordinates of the welding area 22c can be obtained.

[0093] Please see Figure 1 In some embodiments, welding station 1c includes two local welding stations 11c, which are distributed along the second horizontal direction Z; welding device 4 includes two welding structures 41, which are respectively arranged corresponding to the two local welding stations 11c and are located on both sides of the conveying device 2 along the first horizontal direction Y.

[0094] "The two welding structures 41 are respectively set up for two local welding stations 11c" means that each welding structure 41 can be adjusted in the horizontal direction at the corresponding local welding station 11c to reach above the local welding area 221c it is responsible for, and the side of the conveying device 2 where the welding structure 41 is located should be the side closer to the local welding area 221c it is responsible for.

[0095] In the above technical solution, the welding station 1c is divided into two local welding stations 11c. Each local welding station 11c is respectively provided with a welding structure 41. The electrode 210 and the adapter piece 300 at the two local welding areas 221c can be welded successively by the two welding structures 41, which is conducive to improving the welding cycle of a single welding structure 41. Moreover, the two welding structures 41 are located on both sides of the conveying device 2 along the first horizontal direction Y, which is also conducive to rationalizing the layout of equipment space and shortening the travel of the welding structure 41 along the first horizontal direction Y.

[0096] Please see Figure 2 and Figure 6 In some embodiments, the electrode welding equipment 100 further includes a positioning detection component 5, which includes a marking part 52 and a detection part 51. One of the marking part 52 and the detection part 51 is disposed on the conveying device 2 corresponding to the local welding area 221c, and the other is disposed on the welding device 4.

[0097] The "position detection component 5" includes a marker part 52 and a detection part 51. The detection part 51 determines the positioning of the welding device 4 relative to the conveying device 2 by detecting the position of the marker part 52. There are various detection methods; the detection part 51 triggers the position signal by directly contacting the marker part 52. For example, the detection part 51 can be a detection switch, but this embodiment does not limit this. The marker part 52 and the detection part 51 are respectively disposed on the conveying device 2 and the welding device 4, including either the marker part 52 being disposed on the conveying device 2 and the detection part 51 being disposed on the welding device 4, or the marker part 52 being disposed on the welding device 4 and the detection part 51 being disposed on the conveying device 2.

[0098] After the identification device 3 sends out the identification signal, the welding device 4 and the conveying device 2 can arrive at their respective positions in any order. That is, the conveying device 2 arrives at the welding station 1c, and the welding device 4 arrives at the position that corresponds to the welding area 22c of the conveying device 2. However, the final state is that the welding device 4 and the welding area 22c are aligned in the vertical direction X.

[0099] In the above technical solution, after the welding device 4 adjusts its own position according to the identification signal and the conveying device 2 arrives at the welding station 1c, the detection unit 51 can detect the marker 52, thereby determining that the conveying device 2 has arrived at the welding station 1c. Since the marker 52 and the detection unit 51 are set to correspond to the local welding area 221c, it means that the position of the welding device 4 in the vertical direction X corresponds to the welding area 22c, which improves the automatic positioning accuracy of the welding device 4 relative to the welding station 1c of the conveying device 2.

[0100] Specifically, each workstation is equipped with a limit stop structure. This limit stop structure extends toward the conveyor 2 after the conveyor reaches the corresponding workstation, so as to abut against the corresponding mating structure on the conveyor 2, thereby keeping the conveyor 2 stably at the corresponding workstation.

[0101] Please see Figure 2 and Figure 6 In some embodiments, the detection unit 51 is configured as a photoelectric sensor 51a, and the marking unit 52 is correspondingly configured as a reflective unit 52a.

[0102] The positioning detection principle of the photoelectric sensor 51a and the reflector 52a is as follows: the photoelectric sensor 51a includes a light emitter (infrared LED) and a light receiver (phototransistor). The surface of the reflector 52a is provided with a special mirror or microbead structure, which can efficiently and accurately reflect the light emitted by the light emitter back along the original path, so that it can be captured by the light receiver and then emit a positioning signal.

[0103] In the above technical solution, the detection principle of the photoelectric sensor 51a and the reflector 52a is as follows: the photoelectric sensor 51a continuously emits laser light in one direction. When the reflector 52a moves to the laser light emission path, the laser light can be reflected back to the photoelectric sensor 51a. The photoelectric sensor 51a determines the position of the reflector 52a by detecting the returned laser light, that is, the position of the welding device 4 relative to the conveying device 2. This detection method of photoelectric sensor 51a and reflector 52a has high detection accuracy and can ensure the positioning accuracy of the welding device 4.

[0104] Please see Figure 4 In some embodiments, the local welding area 221c includes two same-pole welding areas 2211c distributed along the second horizontal direction Z. The two same-pole welding areas 2211c are respectively used for the same-pole tabs 210 of two bare cells 200 to overlap with an adapter piece 300. Two marking parts 52 are provided, which are provided on the conveying device 2 and respectively correspond to the two same-pole welding areas 2211c.

[0105] The welding device 4 is also movable along the second horizontal direction Z.

[0106] It should be noted that the same-pole welding area 2211c refers to the welding area 22c corresponding to the same-pole tabs 210 (e.g., two positive tabs 210 or two negative tabs 210) of the two bare cells 200. Since the local welding area 221c includes two same-pole welding areas 2211c, the welding device 4 needs to have two position states at the welding station 1c. The two position states can be aligned with the two same-pole welding areas 2211c in the vertical direction X respectively. The switching between the two position states of the welding device 4 needs to be achieved by its own movement along the second horizontal direction Z. Therefore, two markers 52 are provided corresponding to the same-pole welding area 2211c, that is, the two markers 52 are also distributed along the second horizontal direction Z, and the distance between the two markers 52 is the same as the distance between the two local welding areas 221c.

[0107] In this embodiment, the welding device 4 can move not only along the first horizontal direction Y, but also along the second horizontal direction Z. Specifically, the movement can be achieved by providing a mounting base that moves along the second horizontal direction Z on the movable base that moves along the first horizontal direction Y, and the welding device 4 is mounted on the mounting base.

[0108] In the above technical solution, the local welding area 221c includes two same-pole welding areas 2211c distributed along the second horizontal direction Z, which means that the electrode welding equipment 100 can meet the electrode 210 welding requirements of the dual bare cells 200. Based on this, the marking part 52 is set on the conveying device 2 corresponding to the two same-pole welding areas 2211c respectively, so that the position of the two same-pole welding areas 2211c can be identified by a photoelectric sensor 51a, which reduces the setting cost of the position detection component 5.

[0109] Please see Figure 2 In some embodiments, the welding device 4 includes an ultrasonic welding head 41b and a welding seat 41a, which are respectively disposed on both sides of the welding area 22c in the vertical direction X, and are configured to move closer to and further away from each other.

[0110] It should be noted that during the welding process of the ultrasonic welding head 41b, a certain abutting force is usually applied to the overlapping part of the adapter plate 300 and the electrode 210. Therefore, the welding seat 41a is needed to counteract this abutting force. The ultrasonic welding head 41b and the welding seat 41a are configured to move closer and further away from each other. The purpose is that when the welding device 4 moves to be aligned with the welding area 22c in the vertical X direction (the ultrasonic welding head 41b and the welding seat 41a are respectively located on the upper and lower sides of the welding area 22c and their projections overlap), the ultrasonic welding head 41b and the welding seat 41a can move closer to each other to abut against the electrode 210 and the adapter plate 300 on the upper and lower sides respectively. After the welding is completed, the ultrasonic welding head 41b and the welding seat 41a can move further away from each other, thereby creating a sufficient gap so that the welding device 4 can detach from the conveying device 2 in the horizontal direction and avoid the surrounding structure of the welding area 22c.

[0111] In the above technical solution, after the conveying device 2 is transferred to the welding station 1c, the ultrasonic welding head 41b and the welding seat 41a can move close to each other and finally abut against the electrode tab 210 and the adapter plate 300 respectively. The welding seat 41a can provide support for the adapter plate 300, ensuring that the ultrasonic welding head 41b is firmly welded, while preventing the adapter plate 300 from being deformed or displaced under pressure.

[0112] To ensure welding accuracy, please refer to [link / reference]. Figure 2 In some embodiments, the electrode welding device 100 further includes a welding cover plate 6, which has a clearance hole corresponding to the welding area 22c. The welding cover plate 6 corresponds to the position of the welding device 4. Before the ultrasonic welding head 41b abuts against the electrode 210, the welding cover plate 6 can move in the vertical direction X and abut against the electrode 210 of the bare cell 200 to maintain the shape of the electrode 210. Only part of the electrode 210 is exposed through its clearance hole. This part of the electrode 210 is the electrode 210 that is in the welding area 22c and overlaps with the adapter piece 300. After the ultrasonic welding head 41b is completed, the welding cover plate 6 can leave the conveying device 2 with the ultrasonic welding head 41b.

[0113] Please see Figure 5 In some embodiments, the welding area 22c of the conveying device 2 is provided with a clearance hole 221 that extends through in the vertical direction X; the welding seat 41a is movably arranged in the vertical direction X, and the welding seat 41a is used to extend into the clearance hole 221 and abut against the adapter piece 300.

[0114] The function of the "yield hole 221" is to expose part of the structure of the adapter piece 300 downwards. The adapter piece 300 and other parts of the tab 210 can be fully supported and positioned by the conveying device 2. The cross-sectional area of ​​the yield hole 221 is usually larger than the cross-sectional area of ​​the welding seat 41a (the cross-sectional area of ​​the welding seat 41a is usually the same as the area of ​​the welding area 22c).

[0115] In the above technical solution, by opening a clearance hole 221 in the welding area 22c, the welding seat 41a can directly contact the adapter piece 300 through the clearance hole 221, which reduces the transmission path of the supporting force and ensures that the adapter piece 300 is stably supported.

[0116] Please see Figure 5 In some embodiments, the conveying device 2 is provided with a positioning groove 222, which is used for positioning the adapter piece 300; wherein, the clearance hole 221 passes through the bottom wall of the positioning groove 222.

[0117] There are two ways to form the "positioning groove 222". For example, it can be formed by directly machining the groove inward on the plane, or by machining the protruding structure around the groove on the plane. The shape of the positioning groove 222 is adapted to the shape of the adapter piece 300.

[0118] In the above technical solution, during the process of feeding the adapter piece 300 to the conveying device 2, the positioning groove 222 can provide a stable and accurate positioning foundation for the adapter piece 300, which is conducive to improving the feeding efficiency of the adapter piece 300 and reducing the probability of the adapter piece 300 shifting during the flow of the conveying device 2.

[0119] Please see Figure 1 In some embodiments, the identification device 3 includes a barcode scanner 3a, which is used to identify the identification code of the bare battery cell 200.

[0120] In this embodiment, a label is provided on the bare cell 200. The label can be set on the blue film covering the bare cell 200 or printed on the tab 210 of the bare cell 200. This embodiment does not limit this. The label can at least reflect the type of the bare cell 200, including the size information of the tab 210, the thickness information of the tab 210, the spacing information between the two tabs 210, and the power information required to weld the tab 210, etc. The label can be a barcode or a QR code.

[0121] In the above technical solution, the barcode scanner 3a has the advantage of low cost compared to identification devices such as vision cameras 3, and the construction cost of its supporting control system is also significantly reduced.

[0122] Specifically, the conveying device 2 has two bare cell positioning areas 22a. Correspondingly, two barcode scanners 3a are set for the two bare cell positioning areas 22a. The two barcode scanners 3a scan the two bare cells 200 at the same time, which can ensure that the two bare cells 200 fed are of the same type and prevent manual mis-installation.

[0123] This application also proposes a battery production line, which includes a tab welding device 100. The specific structure of the tab welding device 100 is as described in the above embodiments. Since this battery production line adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. In addition to the tab welding device 100, in the production process of battery cells, the battery production line usually also includes welding equipment for adapter 300 and end cap, bare cell 200 flipping equipment, bare cell 200 casing equipment, etc.

[0124] In one specific embodiment of this application, the electrode welding equipment 100 has multiple stations, including a loading station 1a, an identification station 1b, a welding station 1c, and a unloading station 1d. The loading station 1a and the identification station 1b are overlapped. The welding station 1c includes two partial welding stations 11c distributed along the second horizontal direction Z. The electrode welding equipment 100 includes a conveying device 2, an identification device 3, a welding device 4, and two positioning detection components 5. The conveying device 2 includes a conveyor seat 21 and a positioning clamp 22. The conveyor seat 21 is movably arranged along the second horizontal direction Z so that it can pass through multiple stations within its travel range. The positioning clamp 22 is detachably mounted on the conveyor seat 21 via a foolproof positioning structure 23. This foolproof positioning structure 23 includes... The device includes two positioning components 23a, each comprising a cooperating positioning pin 231 and a positioning hole 232. The two positioning pins 231 are respectively disposed on the conveyor seat 21, and the two positioning holes 232 are respectively disposed on the positioning fixture 22. The two positioning holes 232 and the two positioning pins 231 are respectively positioned correspondingly in the vertical direction X. The two positioning holes 232 are different in shape and / or size, ensuring that the positioning pins 231 can only be inserted into their corresponding positioning holes 232, thus limiting the installation direction of the positioning fixture 22 on the conveyor seat 21. The positioning fixture 22 has a bare cell positioning area 22a and an adapter piece positioning area 22b on the upper side. The bare cell positioning area 22a and the adapter piece positioning area 22b are respectively used for positioning the bare cell 200 and the adapter piece 30. In the positioning setting, the bare cell positioning area 22a and the adapter plate positioning area 22b partially overlap, defining a welding area 22c. The welding area 22c is used for the overlap of the adapter plate 300 and the tab 210 of the bare cell 200. The welding area 22c includes two partial welding areas 221c distributed along the first horizontal direction Y. The two partial welding areas 221c are respectively used for the overlap of the positive tab 210 and negative tab 210 of the bare cell 200 with the corresponding adapter plate 300. The partial welding area 221c also includes two same-pole welding areas 2211c distributed along the second horizontal direction Z. The two same-pole welding areas 2211c are respectively used for the overlap of the same-pole tab 210 of the two bare cells 200 with one adapter plate 300. The stacking setup; the identification device 3 is set as a barcode scanner 3a, which is set to the identification station 1b. The barcode scanner 3a is used to identify the identification code of the bare battery cell 200 to determine the type of the bare battery cell 200 and generate the corresponding identification signal; the welding device 4 includes two welding structures 41, which are respectively set to two local welding stations 11c and are located on both sides of the conveying device 2 along the first horizontal direction Y. The welding structure 41 is configured to move along the first horizontal direction Y and along the second horizontal direction Z, and can adjust its position in the first horizontal direction Y and the second horizontal direction Z according to the identification signal generated by the barcode scanner 3a, so that it can be aligned with the corresponding local welding area 221c of the conveying device 2 in the vertical direction X;Two positioning detection components 5 are respectively set for two local welding areas 221c. Each positioning detection component 5 includes a photoelectric sensor 51a and two reflectors 52a. The photoelectric sensor 51a is set on the welding device 4, and the two reflectors 52a are respectively set on the positioning fixture 22 for two same-polarity welding areas 221c. The adapter piece positioning area 22b of the conveying device 2 is provided with a positioning groove 222 for positioning the adapter piece 300. The same-polarity welding area 221c... 1c is provided with a clearance hole 221 extending along the vertical direction X, the clearance hole 221 penetrating the bottom wall of the positioning groove 222; the welding device 4 includes an ultrasonic welding head 41b and a welding seat 41a, the ultrasonic welding head 41b and the welding seat 41a are respectively disposed on both sides of the positioning fixture 22 in the vertical direction X, and are configured to move closer to and further away from each other, the welding seat 41a is used to extend into the clearance hole 221 and abut against the adapter piece 300, and the ultrasonic welding head 41b is used to abut against the electrode tab 210.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tab welding apparatus characterized by comprising: The electrode welding equipment has multiple workstations, including an identification workstation and a welding workstation, and includes: The conveying device is movable, and its travel path passes through the multiple workstations. The conveying device has a welding area, which is configured to allow the tabs of the bare battery cells to overlap with the adapter pieces. An identification device, the identification range of which covers the identification station setting, the identification device being configured to identify the position of the welding area of ​​the conveying device at the identification station and generate a corresponding identification signal; and, A welding device is arranged to move horizontally, and the welding device can reach the welding station within its moving stroke. The welding device is configured to adjust its position at the welding station according to the identification signal so as to be aligned with the welding area of ​​the conveying device in the vertical direction corresponding to the horizontal direction.

2. The tab welding apparatus of claim 1, wherein The plurality of workstations also includes a material loading workstation, and the identification workstation is set to overlap with the material loading workstation.

3. The tab welding apparatus of claim 1, wherein The conveying device includes a conveying base and a positioning clamp, wherein the conveying base is movably disposed and the positioning clamp is detachably disposed on the conveying base; The positioning fixture is used to load and position the bare battery cell and the adapter plate, and the positioning fixture has the welding area.

4. The tab welding apparatus of claim 3, wherein A foolproof positioning structure is provided between the positioning fixture and the conveyor seat, and the foolproof positioning structure is used to limit the installation direction of the positioning fixture on the conveyor seat.

5. The electrode welding equipment as described in claim 4, characterized in that, The foolproof positioning structure includes two positioning components. Each positioning component includes a positioning pin and a positioning hole that cooperate with each other. The positioning pin and the positioning hole are respectively disposed on the conveyor seat and the positioning fixture. The two positioning holes are configured with different shapes and / or sizes so that the positioning pin is inserted into the corresponding positioning hole.

6. The tab welding apparatus of claim 1, wherein The welding device is movably arranged along a first horizontal direction, and the conveying device is movably arranged along a second horizontal direction; The welding area includes two partial welding areas, which are distributed along the first horizontal direction and are respectively used for the positive and negative tabs of the bare battery cell to overlap with the corresponding adapter pieces.

7. The tab welding apparatus of claim 6, wherein The welding station includes two partial welding stations, which are distributed along the second horizontal direction. The welding device includes two welding structures, which are respectively set up for the two local welding stations and are located on both sides of the conveying device along the first horizontal direction.

8. The tab welding apparatus of claim 6, wherein The electrode welding equipment also includes a positioning detection component, which includes a marking part and a detection part. One of the marking part and the detection part is disposed on the conveying device corresponding to the local welding area, and the other part is disposed on the welding device.

9. The tab welding apparatus of claim 8, wherein The detection unit is configured as a photoelectric sensor, and the marking unit is correspondingly configured as a reflective unit.

10. The tab welding apparatus of claim 8, wherein The local welding area includes two same-pole welding areas distributed along the second horizontal direction. The two same-pole welding areas are respectively used for the same-pole tabs of two bare cells to overlap with one of the adapter pieces. Two marking portions are provided, and the two marking portions are provided on the conveying device and respectively correspond to the two same-polarity welding areas; The welding device is also movably arranged along the second horizontal direction.

11. The tab welding apparatus according to any one of claims 1 to 10, wherein The welding device includes an ultrasonic welding head and a welding seat, which are respectively disposed on both sides of the welding area in the vertical direction and are configured to move closer to and further away from each other.

12. The tab welding apparatus of claim 11, wherein The welding area of ​​the conveying device is provided with a clearance hole that runs through the vertical direction. The welding seat is movably disposed along the vertical direction, and the welding seat is used to extend into the clearance hole and abut against the adapter piece.

13. The tab welding apparatus of claim 12, wherein The conveying device is provided with a positioning groove, which is used for positioning and placing the adapter piece. The clearance hole extends through the bottom wall of the positioning groove.

14. The tab welding apparatus of any one of claims 1 to 10, wherein The identification device includes a barcode scanner, which is used to identify the identification code of the bare battery cell.

15. A battery production line, characterized by Includes the electrode welding equipment as described in any one of claims 1 to 14.

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