Battery welding equipment

Abstract

The invention provides battery welding equipment, and relates to the technical field of battery manufacturing. The battery welding equipment comprises a conveying device, a fixing device and a welding device. The conveying device is used for conveying the jig to the fixing device. The fixing device comprises a plurality of installation stations arranged at intervals and a plurality of press-fitting structures arranged at intervals, the number of the press-fitting structures is equal to that of the installation stations, the press-fitting structures and the installation stations are in one-to-one correspondence, the press-fitting structures are used for pressing the batteries to the jig, and the fixing device can drive the jig to move to the welding position. The welding device is fixedly mounted on the side, away from the mounting station, of the press-fitting structure. The fixing device further comprises a plurality of dust collecting structures arranged at intervals, the number of the dust collecting structures is equal to that of the mounting stations, the dust collecting structures and the mounting stations are in one-to-one correspondence, and the dust collecting structures are used for collecting welding smoke generated in the battery welding process. According to the battery welding equipment provided by the embodiment of the invention, the collection efficiency of welding smoke dust can be improved, the welding quality of the battery is improved, and the welding yield of the battery is ensured.

Description

Technical Field

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

[0002] Batteries are widely used in power applications such as automobiles, construction machinery, and ships, and also in areas such as home energy storage, industrial and commercial energy storage, and communication base stations. As the application areas of batteries become increasingly widespread, the quality requirements for batteries are also becoming more stringent. Key equipment in battery production is crucial for ensuring battery quality, and battery welding equipment plays a vital role in the battery production process.

[0003] Based on the structure of existing battery welding equipment, poor battery welding quality may occur during the battery welding process, affecting the quality of the battery. Summary of the Invention

[0004] This application provides a battery welding device to improve the dust collection efficiency of the battery welding device, thereby improving the welding quality of the battery and ensuring the quality of the battery.

[0005] In a first aspect, this application provides a battery welding apparatus, which includes a conveying device, a fixing device, and a welding device. The conveying device is used to convey a fixture to the fixing device. The fixing device includes a plurality of installation stations spaced apart and a plurality of pressing structures spaced apart, the number of pressing structures being equal to and corresponding one-to-one with the number of installation stations. The pressing structures are used to press the battery against the fixture. The fixing device can move the fixture to the welding position, which refers to the installation station corresponding to the welding device. The welding device is fixedly installed on the side of the pressing structure opposite to the installation station.

[0006] The fixing device also includes multiple dust collection structures spaced at intervals. The number of dust collection structures is equal to the number of installation stations and corresponds one-to-one. The dust collection structures are used to collect welding fumes generated during battery welding.

[0007] The conveying device can transport the fixture to the fixing device, the mounting station on the fixing device can fix the fixture to the fixing device, and the clamping device can apply force to the fixture, increasing the possibility that the battery in the fixture meets the welding standards.

[0008] The fixing device includes dust collection structures, and the number of dust collection structures is equal to and corresponds one-to-one with the installation stations. During the welding process of the battery in the fixture by the welding device, the dust collection structures can collect the welding fumes generated during the welding process. Compared with the prior art, where one dust collection structure corresponds to multiple installation stations, in this application example, the dust collection structures correspond one-to-one with the installation stations. The dust collection structures can collect the welding fumes generated by the battery at the installation station during the welding process in a timely manner, which can improve the dust collection efficiency of the battery welding equipment, reduce the possibility of welding fumes stagnating in the welding area, thereby reducing the possibility of welding fumes affecting the weld and improving the welding quality of the battery.

[0009] In some possible implementations, the dust collection structure and the press-fit structure are integrally formed.

[0010] In this example, by integrating the dust collection structure and the press-fitting structure, the assembly process of the battery welding equipment can be simplified and the assembly efficiency of the battery welding equipment can be improved.

[0011] Furthermore, since the dust collection structure and the press-fit structure are integrally formed, the distance that welding fumes travel to the dust collection structure can be reduced, further improving the dust collection efficiency of the dust collection structure for welding fumes.

[0012] In some possible implementations, the battery welding equipment also includes a detection device, wherein the dust collection structure has at least one dust collection port connected to the detection device, which is used to detect the air parameters flowing through the dust collection port.

[0013] In contrast to existing technologies where multiple batteries correspond to a single dust collection structure, the air parameters detected by the detection device are for multiple batteries, making it impossible to accurately determine the air parameters for each individual battery. In this application's example, each installation station is equipped with a corresponding dust collection structure, and each dust collection structure has a corresponding detection device, which can accurately detect the air parameters for each battery. Based on this, the air parameters corresponding to batteries with better welding quality can be determined. This facilitates adjustments to the air parameters during subsequent battery welding processes, further improving the welding quality of the battery welding equipment.

[0014] In some possible implementations, the press-fit structure has a connected protective gas passage and a welding cavity inside. The end of the protective gas passage away from the welding cavity is connected to a protective gas source, and the welding cavity is connected to a dust collection port.

[0015] Based on the above, the dust collection port can be connected to a detection device, which can be a vacuum generator. Through the airflow conversion between the press-fit structure and the dust collection structure, a negative pressure airflow can be generated at the dust collection port, which can discharge the protective gas and the dust generated during the welding process together from the dust collection port to the outside of the dust collection structure, thereby improving the dust collection efficiency of the battery welding equipment.

[0016] In some possible implementations, the fixing device includes a main turret, with the installation station fixedly installed on one side of the main turret, and the pressing structure installed on the other side of the main turret. The pressing structure is movable toward the installation station and corresponds to the installation station.

[0017] In this example, the installation station is fixedly installed on one side of the main turret, while the pressing structure is located on the other side. The main turret allows for coaxial rotation of the pressing structure and the installation station. During the operation of the battery welding equipment, the pressing structure is able to apply force to the fixture fixed at the installation station, increasing the likelihood that the core and current collector within the fixture can meet welding standards.

[0018] In some possible implementations, the battery welding apparatus also includes a clamping device located on the side of the installation station away from the pressing structure, and the clamping device is slidably connected to the installation station.

[0019] Based on the above, the clamping device can provide a force towards the current collector for the battery cells in the fixture, increasing the likelihood that the batteries in the fixture will meet the welding standards, thereby improving the working efficiency of the battery welding equipment.

[0020] In some possible implementations, the welding apparatus includes at least one laser welder.

[0021] In this application example, the manufacturing cost of the battery welding equipment can be reduced when only one laser welder is set.

[0022] When multiple laser welders are set up, they can weld batteries at multiple welding stations simultaneously, which can improve the welding efficiency of battery welding equipment.

[0023] In some possible implementations, the fixture includes a first clamping structure and a second clamping structure. The first clamping structure is connected to the conveying device and has a first receiving groove. The second clamping structure is fixedly connected to the first clamping structure and has a second receiving groove. The second receiving groove cooperates with the first receiving groove to form a receiving cavity for accommodating the winding core.

[0024] In this application example, by setting a first clamping structure and a second clamping structure to cooperate in limiting the battery, it is convenient to complete the assembly of the jig and the battery by mechanical equipment, realize the automation of the assembly of the jig and the battery, improve the assembly efficiency of the jig and the battery, and thus improve the welding efficiency of the battery welding equipment.

[0025] In some possible implementations, the fixture further includes a first magnetic element and a second magnetic element. The first clamping structure has at least two first mounting holes on the side facing the second clamping structure, with the at least two first mounting holes spaced apart, and the first magnetic element is mounted in one of the first mounting holes.

[0026] The second clamping structure has at least two second mounting holes on the side facing the first clamping structure. The at least two second mounting holes are spaced apart. The second magnetic component is mounted in the second mounting holes. The magnetic direction of the second magnetic component is opposite to that of the first magnetic component.

[0027] Based on the fixture provided in this application example, on the basis of the fixed connection between the first clamping structure and the second clamping structure, the first clamping structure and the second clamping structure are connected by the attraction of the first magnetic component and the second magnetic component, which can further ensure the connection reliability of the first clamping structure and the second clamping structure, and ensure the assembly reliability of the first clamping structure, the second clamping structure and the battery cell.

[0028] In some possible implementations, the conveying device includes a conveyor belt and a conveyor wheel. The conveyor belt has a fixing block that is connected to a fixture. The outer circumference of the conveyor wheel has multiple locking slots for engaging the fixture conveyed by the conveyor belt to the conveyor wheel. The conveyor wheel then engages with a tray to transport the fixture located in the locking slots to the installation station. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a battery welding device provided as an example in this application.

[0030] Figure 2 This is a schematic diagram illustrating the combination of a fixing device, a jig, and a testing device, as provided in this application.

[0031] Figure 3 This is a schematic diagram illustrating the cooperation between a partial fixing device and a welding device, as provided in this application example.

[0032] Figure 4 This is a schematic diagram of a press-fit structure provided as an example of this application.

[0033] Figure 5 for Figure 4 Sectional view along the middle AA.

[0034] Figure 6 This is a schematic diagram of the structure of a fixture provided as an example of this application.

[0035] Figure 7 This is a schematic diagram of the exploded structure of a fixture provided as an example of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Conveying device; 110. Conveyor belt; 120. Conveyor wheel; 200. Fixing device; 210. Pressing structure; 211. Welding chamber; 212. Protective gas passage; 213. Dust collection passage; 2131. Dust collection port; 220. Pressing device; 230. Main turret; 300. Welding device; 310. Laser welder; 400. Discharge transmission mechanism; 500. Fixture; 510. First clamping structure; 511. First receiving groove; 520. Second clamping structure; 530. First magnetic component; 540. Second magnetic component; 550. First limiting block; 560. Second limiting block; 600. Detection device; 700. Battery; 710. First collector plate; 720. Second collector plate; 730. Core. Detailed Implementation

[0038] To make the purpose, technical solutions, and advantages of the examples in this application clearer, the technical solutions in the examples of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only a part of the examples in this application, not all of them. Based on the examples in this application, all other examples obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0039] 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 terms used herein in the description of the application are for the purpose of describing particular examples only and are not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the description, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0040] In this document, the term "example" means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one example of this application. The appearance of the phrase "example" in various places in the specification does not necessarily refer to the same example, nor is it a separate or alternative example mutually exclusive with other examples. It will be explicitly and implicitly understood by those skilled in the art that the examples described herein can be combined with other examples.

[0041] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0042] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the battery welding equipment of this application.

[0043] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0044] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0045] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] Batteries are widely used in power applications such as automobiles, construction machinery, and ships, as well as in home energy storage, commercial and industrial energy storage, and communication base stations. As the application areas of batteries become increasingly widespread, the quality requirements for batteries are also becoming more stringent. Key equipment in battery production is crucial for ensuring battery quality. Among these, battery welding equipment plays a vital role in the battery production process.

[0047] Based on the structure of existing battery welding equipment, pre-welding and post-welding inspections can be performed on batteries to ensure the factory pass rate of batteries.

[0048] However, in existing battery welding equipment, multiple batteries typically correspond to one dust collection structure, resulting in low dust collection efficiency during the welding process.

[0049] Welding fumes may contain harmful substances such as metal oxides, silicates, and nitrogen oxides. These substances may be released into the air with the fumes during high-temperature welding. If welding fumes are not cleaned up in a timely manner, they may stagnate in the welding area, causing particulate matter to easily adhere to the weld surface, affecting weld formation and potentially corroding the weld, thus impacting welding quality and consequently affecting the quality of the battery welding.

[0050] Based on the above, this application provides a battery welding device.

[0051] To enable those skilled in the art to better understand the present application, the battery welding equipment provided in this application example will be clearly and completely described below with reference to the accompanying drawings.

[0052] For example, this application provides a battery welding device.

[0053] This application provides a battery welding device. Figure 1 This application provides a schematic diagram of the structure of a battery welding device. Figure 2 This application provides a schematic diagram illustrating the combination of a fixing device, a jig, and a testing device. Figure 3 This is a schematic diagram illustrating the cooperation between a partial fixing device and a welding device, as provided in this application example.

[0054] Please refer to Figures 1-3 The battery welding equipment may include a conveying device 100, a fixing device 200, and a welding device 300. The conveying device 100 is used to convey the fixture 500 to the fixing device 200. The fixing device 200 may include a plurality of installation stations spaced apart and a plurality of pressing structures 210 spaced apart. The number of pressing structures 210 is equal to the number of installation stations and corresponds one-to-one. The pressing structures 210 are used to press the battery onto the fixture 500. The fixing device 200 can move the fixture 500 to the welding position, which refers to the installation station corresponding to the welding device 300. The welding device 300 is fixedly installed on the side of the pressing structure 210 away from the installation station.

[0055] The fixing device 200 may also include multiple dust collection structures arranged at intervals. The number of dust collection structures is equal to and corresponds one-to-one with the number of pressing structures 210. The dust collection structures are used to collect welding fumes generated during battery welding.

[0056] The jig 500 refers to an auxiliary tool used to position the core and current collector, facilitating the welding of the core and current collector by battery welding equipment. The core and current collector work together to form a battery.

[0057] Batteries can be cylindrical, cubic, or other shapes; this application does not limit the specific shape of the battery. The following description uses a cylindrical battery as an example only.

[0058] The conveying device 100 may include at least one of a conveyor belt 110 and a conveyor gear.

[0059] The fixture 500 can be fixedly mounted on the conveyor 100 and transported to the fixed device 200 via the drive of the conveyor belt 110 and / or the drive of the conveyor gears. For details regarding the specific structure of the conveyor 100, please refer to the relevant description below.

[0060] The fixing device 200 may include multiple installation stations, which can fix the fixture 500, which is conveyed to the fixing device 200, onto the fixing device 200. The installation station may refer to a position on the fixing device 200 that is provided with an installation groove or other installation structure. The fixing device 200 can convey the fixture 500 installed at the installation station to the welding position by linear drive, rotation, or other conveying methods.

[0061] The fixing device 200 may also include multiple pressing structures 210, which can press the battery tightly within the fixture 500 to ensure that the distance between the current collector and the winding core 730 meets the welding standards, thereby improving the welding yield of the current collector and the winding core 730. The pressing structure 210 may be the same as the pressing structure 210 in the prior art. The pressing structure 210 may also be different from the pressing structure 210 in the prior art. For example, the pressing structure 210 and the dust collection structure may be integrally formed. The specific implementation of the pressing structure 210 in this application is not limited.

[0062] The fixing device 200 may also include multiple dust collection structures spaced apart, the number of which is equal to the number of pressing structures 210, and each dust collection structure corresponds to an installation station. During the welding process of the welding device 300 welding the collecting plate and the core 730 in the fixture 500, the dust collection structures can collect the welding fumes generated during the welding process.

[0063] When the fixture 500 installed at the installation station reaches the welding position, the welding device 300 can weld the core 730 inside the fixture 500 to the collecting plate. The dust collection structure can collect the welding fumes generated during the welding process.

[0064] The welding device 300 can be a laser welder 310, or it can be a conventional welder or other welders.

[0065] One or more welding devices 300 may be provided. Correspondingly, one or more welding positions may also be provided.

[0066] When multiple welding devices 300 are provided, the welding efficiency of the battery welding device 300 can be improved.

[0067] Based on the above, the conveying device 100 can convey the fixture 500 to the fixing device 200, the mounting station on the fixing device 200 can fix the fixture 500 to the fixing device 200, and the pressing structure 210 can apply force to the fixture 500, increasing the possibility that the battery in the fixture 500 meets the welding standards.

[0068] The fixing device 200 includes dust collection structures, and the number of dust collection structures is equal to and corresponds one-to-one with the installation stations. During the welding process of the welding device 300 welding the battery in the fixture 500, the dust collection structures can collect the welding fumes generated during the welding process. Compared with the prior art, where one dust collection structure corresponds to multiple installation stations, in this application example, the dust collection structures correspond one-to-one with the installation stations. The dust collection structures can collect the welding fumes generated by the battery at the installation station during the welding process in a timely manner, which can improve the dust collection efficiency of the battery welding equipment, reduce the possibility of welding fumes stagnating in the welding area, thereby reducing the possibility of welding fumes affecting the weld and improving the welding quality of the battery.

[0069] Based on the battery welding equipment provided in the above example, please refer to... Figure 1 The conveying device 100 may include a conveyor belt 110 and a conveyor wheel 120. The conveyor belt 110 may be provided with a fixing block, which is connected to the fixture 500. The outer periphery of the conveyor wheel 120 is provided with multiple locking grooves, which are used to lock the fixture 500 conveyed by the conveyor belt 110 to the conveyor wheel 120. The conveyor wheel 120 conveys the fixture 500 located in the locking groove to the installation position by engaging with the main turret 230.

[0070] The fixed block may have a connecting groove on the side opposite to the conveyor belt 110. The fixture 500 can be snapped into the connecting groove, and the fixture 500 and the connecting groove can be fixedly connected through the cooperation of the fixture 500 and the conveyor belt 110. The fixture 500 fixed to the conveyor belt 110 can be conveyed to the snapping groove on the conveyor wheel 120 by the conveying of the conveyor belt 110.

[0071] The conveyor wheel 120 can be connected to the main turret 230 by gear meshing, conveying the jig 500 in the snap-fit ​​groove to the installation station on the main turret 230. Then, the rotation of the main turret 230 conveys the jig 500 on the installation station to the welding station, so that the welding device 300 can complete the welding of the battery in the jig 500.

[0072] Based on the battery welding equipment provided in the above example, the conveying device 100 may be equipped with an identification device, and the battery has an identification structure. The identification device can scan the identification structure to facilitate the recording of the battery's state parameters.

[0073] The battery's state parameters may include at least one of the following: the pre-welding distance between the current collector and the core, the air parameters during the welding process, and the post-welding quality parameters.

[0074] The identification structure can be at least one of numbers, letters, patterns, and colors. The identification structure can also be an identification code, specifically at least one of QR codes and barcodes. The identification structure can also be other structures that can mark the battery. This application does not limit the specific implementation of the identification structure.

[0075] Based on the battery welding equipment provided in the above example, the battery welding equipment may further include a detection device 600. The dust collection structure may be provided with at least one dust collection port 2131, which is connected to the detection device 600. The detection device 600 is used to detect the air parameters flowing through the dust collection port 2131.

[0076] The detection device 600 can be a vacuum generator, a wind speed sensor, etc. This application example only describes the detection device 600 as a vacuum generator.

[0077] Air parameters can refer to parameters such as air velocity and air composition.

[0078] A dust collection structure may have one dust collection port 2131, or a dust collection structure may have two, three or four dust collection ports 2131. The example in this application does not limit the specific configuration of the dust collection ports 2131.

[0079] Each dust collection port 2131 can be connected to at least one detection device 600. By setting the detection device 600, the air parameters flowing through the dust collection port 2131 during the welding process can be detected.

[0080] The side of the detection device 600 furthest from the dust collection port 2131 can be connected to a dust collection bag, dust collection box, or other structure capable of collecting welding fumes. The dust collection bag can concentrate the welding fumes collected by the dust collection structure, making it convenient for operators to centrally process the collected welding fumes. Operators can replace the dust collection bag periodically to ensure the reliability of the dust collection structure.

[0081] By combining the detection results of the detection device 600 with the welding quality parameters of the battery, the air parameters corresponding to batteries with better welding quality can be determined. This allows for adjustments to the air parameters during subsequent battery welding processes, thereby improving the welding quality of the battery.

[0082] In contrast to existing technologies where multiple batteries correspond to a single dust collection structure, the air parameters detected by the detection device 600 are for multiple batteries, making it impossible to accurately determine the air parameters for each individual battery. In this example, each installation station has a corresponding dust collection structure, and each dust collection structure has a corresponding detection device 600, which can accurately detect the air parameters for each battery at each installation station. This allows for the determination of the air parameters for batteries with better welding quality. This facilitates adjustments to the air parameters during subsequent battery welding processes, further improving the welding quality of the battery welding equipment.

[0083] Based on the battery welding equipment provided in the above example. Figure 4 This application provides a schematic diagram of a press-fit structure as an example. Figure 5 for Figure 4 Please refer to the sectional view along the middle AA. Figure 4 and Figure 5 The press-fit structure 210 may have a protective gas passage 212 and a welding cavity 211 connected inside. The end of the protective gas passage 212 away from the welding cavity 211 is connected to the protective gas source, and the welding cavity 211 is connected to the dust collection port 2131.

[0084] The welding cavity 211 can be provided in one, two, three, four, or even more ways. The welding cavity 211 can be roughly in the form of a through hole structure, based on which the energy of the welding device 300 can be directly delivered to the fixture 500 through the welding cavity 211 to weld the collector plate and the core 730.

[0085] The shielding gas passage 212 can be connected to a shielding gas source via a shielding gas connector. Therefore, the shielding gas from the shielding gas source can reach the shielding gas passage 212 via the shielding gas connector. Since the shielding gas passage 212 is connected to the welding chamber 211, the shielding gas can reach the welding chamber 211 via the shielding gas passage 212. Providing shielding gas during the battery welding process creates a protective barrier between the weld pool and the surrounding environment, isolating the weld pool from the surrounding environment, reducing the possibility of weld pool oxidation or other chemical reactions, and also helping to control the plasma, reducing spatter and porosity, and ensuring the welding quality and stability of the battery welding equipment.

[0086] The protective gas can be nitrogen, argon, helium, or other chemically stable gases.

[0087] Based on the above, please refer to Figure 1The dust collection port 2131 can be connected to a detection device 600, which can be a vacuum generator. Through the airflow conversion between the press-fit structure 210 and the dust collection structure, a negative pressure airflow can be generated at the dust collection port 2131, which can discharge the protective gas and the welding fumes generated during the welding process from the dust collection port 2131 to the outside of the dust collection structure, thereby improving the dust collection efficiency of the battery welding equipment.

[0088] Based on the battery welding equipment provided in the above example, the dust collection structure may include multiple independent welding chambers 211, each welding chamber 211 is connected to a protective gas passage 212, and each welding chamber 211 has a dust collection port 2131 connected to the welding chamber 211.

[0089] Since this application example has multiple independent welding chambers 211, the welding device 300 can weld the battery from multiple welding chambers 211, which can improve the welding efficiency of the battery. In addition, since each welding chamber 211 has a corresponding dust collection port 2131, the dust collection port 2131 can perform dust collection operation on the same battery from different angles, which can further improve the dust collection efficiency of the battery welding equipment.

[0090] Based on the battery welding equipment provided in the above example, the dust collection structure and the press-fit structure 210 are integrally formed.

[0091] Specifically, the dust collection structure may include a dust collection channel 213, which may be located inside the press-fit structure 210. One end of the dust collection channel 213 may be connected to the welding cavity 211, and the other end of the dust collection channel 213 may be connected to the dust collection port 2131.

[0092] Based on this, the welding fumes generated in the welding chamber 211 during the welding process can be moved to the dust collection port 2131 via the dust collection channel 213 and finally discharged from the battery welding equipment.

[0093] In this example, by setting the dust collection structure and the pressing structure 210 to be integrally formed, the assembly process of the battery welding equipment can be simplified and the assembly efficiency of the battery welding equipment can be improved.

[0094] Furthermore, since the dust collection structure and the press-fit structure 210 are integrally formed, the distance that welding fumes travel to the dust collection structure can be reduced, further improving the dust collection efficiency of the dust collection structure for welding fumes.

[0095] Based on the battery welding equipment provided in the above example, please refer to... Figure 3 The fixing device 200 may include a main turret 230, an installation station fixedly installed on one side of the main turret 230, and a pressing structure 210 installed on the other side of the main turret 230. The pressing structure 210 can move toward the installation station and corresponds to the installation station.

[0096] The installation station can be fixedly connected to the main turret 230 through the first connecting plate or other connecting structures. The installation station can also be integrally formed with the main turret 230. In this application example, no specific restrictions are placed on the connection method between the installation station and the main turret 230.

[0097] The press-fit structure 210 can be fixedly connected to the main turret 230 via a second connecting plate or other connecting structure. The second connecting plate may be provided with a sliding groove, and the press-fit structure 210 may be provided with a sliding rail. The sliding rail can extend into the sliding groove and slide within the sliding groove. Through the cooperation of the sliding rail and the sliding groove, the press-fit structure 210 can be slidably connected relative to the installation position.

[0098] The main turret 230 can be fixedly connected to multiple installation stations, or it can be fixedly connected to multiple press-fit structures 210. The number of press-fit structures 210 can be equal to the number of installation stations, and the press-fit structures 210 can correspond one-to-one with the installation stations.

[0099] The fixture 500 installed at the installation station can be moved to the welding station by rotating the main turret 230, so that the welding device 300 can weld the battery inside the fixture 500.

[0100] In this example, the installation station is fixedly installed on one side of the main turret 230, and the pressing structure 210 is located on the other side of the main turret 230. The main turret 230 allows for coaxial rotation of the pressing structure 210 and the installation station. During the operation of the battery welding equipment, the pressing structure 210 is ensured to apply force to the fixture 500 fixed at the installation station, increasing the likelihood that the core and current collector within the fixture 500 can meet welding standards.

[0101] Based on the battery welding equipment provided in the above example, please refer to... Figure 3 The battery welding equipment may also include a clamping device 220, which is located on the side of the installation station away from the pressing structure 210 and is slidably connected to the installation station.

[0102] Before the battery welding equipment welds the battery, the clamping device 220 can abut against the fixture 500, so that the core inside the fixture 500 is in close contact with the collector plate.

[0103] The clamping device 220 may be equipped with a sliding groove, and the installation station may be equipped with a slider. The slider can extend into the sliding groove and slide within it, thereby enabling a slidable connection between the clamping device 220 and the installation station. Alternatively, the clamping device 220 may be equipped with a slider, and the installation station may be equipped with a sliding groove, allowing for a slidable connection between the clamping device 220 and the installation station through the cooperation of the slider and the sliding groove.

[0104] The clamping device 220 may include a first cam drive bearing, an elastic mechanism, and a clamping block. The first cam drive bearing can provide a force to the clamping block toward the fixture 500 through the elastic mechanism, making the contact between the fixture 500 and the clamping device 220 more compact, thereby making the contact between the core and the collector plate inside the fixture 500 more compact, further increasing the possibility that the battery cell inside the fixture 500 meets the welding standards.

[0105] Based on the above, the clamping device 220 can provide a force towards the current collector for the battery cells in the fixture 500, increasing the likelihood that the batteries in the fixture 500 can meet the welding standards, thereby improving the working efficiency of the battery welding equipment.

[0106] Based on the battery welding equipment provided in the above example, the battery welding equipment may also include a pre-welding inspection device. The pre-welding inspection device may be located at the installation station before the fixture 500 reaches the welding station, or it may be located at the welding station and integrated with the welding device 300. The specific setting of the pre-welding inspection device is not limited in the example of this application.

[0107] The pre-welding inspection device can be a distance sensor or other inspection device capable of measuring the distance between the collector and the core.

[0108] If the pre-welding inspection device detects that the distance between the core and the current collector meets the preset distance, it sends a welding signal to the welding device 300, and the welding device welds the battery that meets the requirements. Otherwise, the pre-welding inspection device does not send a welding signal to the welding device 300, and the battery in the fixture 500 flows into the next stage. The welding operation is completed only after the distance between the core and the current collector meets the preset distance.

[0109] Based on the battery welding equipment provided in the above example, please refer to... Figure 1 The battery welding equipment also includes a discharge transmission mechanism 400, a discharge mechanism, and a post-weld inspection device. After welding, the battery can reach the discharge mechanism via the discharge transmission mechanism 400, and the post-weld inspection device can perform post-weld inspection on the battery that arrives at the discharge mechanism.

[0110] The discharge transmission mechanism 400 can be a discharge tray, which can be meshed with the main turret.

[0111] The discharge tray can include multiple discharge stations. By connecting the discharge stations to the installation stations, the fixture 500 at the installation station can reach the discharge station. Rotation of the discharge tray allows the fixture 500 at the discharge station to reach the discharge mechanism.

[0112] Post-weld inspection equipment can be a welding quality inspector or other equipment capable of inspecting welding quality.

[0113] The post-weld inspection device can detect problems such as cracks, lack of fusion, incomplete penetration, slag inclusions, and porosity during welding. Batteries that pass the welding quality inspection can be transported to the next process for continued production. Batteries that do not meet the welding quality requirements are marked as abnormal batteries to improve the battery's factory pass rate.

[0114] Based on the battery welding equipment provided in the above example, the battery welding apparatus 300 may include at least one laser welder 310.

[0115] In this application example, the cooperation between the conveying device 100 and the fixing device 200 enables the jig 500 equipped with the battery on the conveying device 100 to be transferred to the installation station on the fixing device 200. The jig 500 installed on the installation station can be transferred to the welding station through the transmission of the fixing device 200 itself. The laser welder 310 can weld the battery in the jig 500 transferred to the welding station.

[0116] One laser welder 310 can be set, or two, three, or even more laser welders 310 can be set.

[0117] In this application example, if only one laser welder 310 is provided, the manufacturing cost of the battery welding equipment can be reduced.

[0118] When multiple laser welders 310 are provided, multiple laser welders 310 can weld batteries at multiple welding stations simultaneously, which can improve the welding efficiency of battery welding equipment.

[0119] Based on the battery welding equipment provided in the above example. Figure 6 This application provides a schematic diagram of the structure of a fixture as an example. Figure 7 Please refer to the exploded structure diagram of a jig provided as an example in this application. Figure 6 and Figure 7 The fixture 500 may include a first clamping structure 510 and a second clamping structure 520. The first clamping structure 510 is connected to the conveying device 100 and is provided with a first receiving groove 511. The second clamping structure 520 is fixedly connected to the first clamping structure 510 and is provided with a second receiving groove. The second receiving groove and the first receiving groove 511 cooperate to form a receiving cavity for receiving the winding core 730.

[0120] Both the first clamping structure 510 and the second clamping structure 520 can be semi-cylindrical. The first clamping structure 510 and the second clamping structure 520 cooperate to clamp the battery 700 and fix the relative position of the winding core 730 and the current collector plate, which includes the first current collector plate 710 and the second current collector plate 720.

[0121] The conveying device 100 may be fixedly provided with a fixed groove. The fixed groove may be a groove-shaped structure formed between two adjacent fixed blocks, or it may be a groove-shaped structure provided on the fixed blocks.

[0122] The wall of the fixed groove can cooperate with the first clamping structure 510 to fix the first clamping structure 510 to the conveying device 100.

[0123] The first clamping structure 510 may have at least two spaced mounting protrusions on the side facing the second clamping structure 520, and the second clamping structure 520 may have at least two spaced mounting grooves on the side facing the first clamping structure 510. The mounting protrusions can extend into the mounting grooves and cooperate with them. Since the mounting protrusions are located on the first clamping structure 510 and the mounting grooves are located on the second clamping structure 520, the first clamping structure 510 and the second clamping structure 520 can be connected by the cooperation of the mounting protrusions and the mounting grooves.

[0124] The side of the first clamping structure 510 facing the second clamping structure 520 can be rectangular. If there are two mounting protrusions, the two mounting protrusions can be located on the diagonal of the rectangle, and the position of the mounting groove corresponds to the position of the mounting protrusion.

[0125] There can be three, four, or even more mounting protrusions; this application example does not limit the specific implementation of the mounting protrusions. The first clamping structure 510 can also be connected to the second clamping structure 520 by means of threaded connection, riveting, or other connection methods.

[0126] The first clamping structure 510 may be provided with a first receiving groove 511. The battery 700 may include a winding core 730, a first current collector 710, and a second current collector 720. The first current collector 710 and the second current collector 720 may be located at both ends of the winding core 730. Along the direction from the first current collector 710 to the second current collector 720, the first receiving cavity near the groove wall of the first current collector 710 can limit the first current collector 710, and the first receiving cavity near the groove wall of the second current collector 720 can limit the second current collector 720.

[0127] During the welding process of battery 700, the connection between battery 700, first clamping structure 510, second clamping structure 520, and battery welding equipment can be completed by a robotic arm through other equipment. This application example only describes the assembly of various components by the battery welding equipment through a robotic arm.

[0128] First, the first clamping structure 510 is fixedly installed onto the conveying device 100 using a robotic arm. Then, the robotic arm places the core 730 into the first receiving groove 511. Next, the robotic arm places the first collector plate 710 into the first receiving groove 511. The second clamping structure 520 is fixedly connected to the first clamping structure 510, so that the second clamping structure 520 and the first clamping structure 510 cooperate to clamp the core 730 and the first collector plate 710, thereby limiting the movement of the core 730 and the first collector plate 710.

[0129] The core 730 is brought into close contact with the first current collector 710 by the clamping device 220, and the welding device 300 completes the welding between the core 730 and the first current collector 710. Then, the second clamping structure 520 is removed by the robotic arm, and the second current collector 720 is placed into the first receiving groove 511. The clamping device 220 brings the second current collector 720 into close contact with the core 730, and the welding device 300 completes the welding between the second current collector 720 and the core 730. Thus, the welding of the core 730, the first current collector 710, and the second current collector 720 is completed. The second clamping structure 520 is removed by the robotic arm, allowing the welded battery 700 to be removed from the fixture 500. The first clamping structure 510 and the second clamping structure 520 are in a separate state, waiting for the core 730 to be welded, the first current collector 710 and the second current collector 720 to be placed into the first receiving groove 511, so as to complete the welding of the battery 700 to be welded.

[0130] In this application example, by setting the first clamping structure 510 and the second clamping structure 520 to cooperate in limiting the battery 700, it is convenient to complete the assembly of the jig 500 and the battery 700 by mechanical equipment, realize the automation of the assembly of the jig 500 and the battery 700, improve the assembly efficiency of the jig 500 and the battery 700, and thus improve the welding efficiency of the battery welding equipment.

[0131] Based on the battery welding equipment provided in the above example, the first receiving tank 511 can be integrally formed, or the first receiving tank 511 can be composed of multiple parts.

[0132] For example, please refer to Figure 7The first clamping structure 510 may include a clamping structure body, a first limiting block 550, and a second limiting block 560. The clamping structure body may have a receiving groove. Along the direction from the first collector plate 710 to the second collector plate 720, the first limiting block 550 may be located at one end of the receiving groove near the first collector plate 710, and the second limiting block 560 may be located at one end of the receiving groove near the second collector plate 720. In this way, the first limiting block 550, the second limiting block 560, and the receiving groove located on the clamping structure body can cooperate to form a first receiving groove 511. The first limiting block 550 can limit the first collector plate 710, and the second limiting block 560 can limit the second collector plate 720.

[0133] Based on the battery welding equipment provided in the above example, the structures of the first current collector 710 and the second current collector 720 can be the same or different. This application example does not impose specific restrictions on this.

[0134] For example, the diameter of the first collector plate 710 can be larger than the diameter of the second collector plate 720, the diameter of the first collector plate 710 can be equal to the diameter of the second collector plate 720, or the diameter of the first collector plate 710 can be smaller than the diameter of the second collector plate 720.

[0135] The clamping structure body may have a first positioning groove at its end near the first limiting block 550, and the first limiting block 550 may be disposed in the first positioning groove. Specifically, the first limiting block 550 may be fixedly connected to the groove wall of the positioning groove by means of threaded connection, riveting, snap-fit, etc.

[0136] A spacer protrusion is provided between the first limiting block 550 and the first current collector 710. During the operation of the battery welding equipment, the first current collector 710 can abut against the spacer protrusion, and the welding energy of the welding device 300 can pass through the first limiting block 550 to complete the welding of the first current collector 710 and the core 730.

[0137] The end of the clamping structure body near the second limiting block 560 may be provided with a second positioning groove, and the second limiting block 560 may be located in the second positioning groove.

[0138] The first limiting block 550 and the second limiting block 560 have similar structures. For example, the first limiting block 550 can be annular, semi-annular, or other shapes. This is as long as the first limiting block 550 does not affect the welding of the first collector plate 710 and the core 730. Based on the different structures of the first limiting block 550 and the second limiting block 560, the second clamping structure 520 can have different implementations.

[0139] For example, when the first limiting block 550 is annular, the second clamping structure 520 may be provided with a third positioning groove, which cooperates with the first positioning groove to position the first limiting block 550. The second clamping structure 520 may also be provided with a fourth positioning groove, which cooperates with the second positioning groove to position the second limiting block 560.

[0140] For example, when the collector plate is semi-circular, the curved side of the first limiting block 550 can extend into the first positioning groove, and the flat side of the first limiting block 550 can abut against the second clamping structure 520. The curved side of the second limiting block 560 can extend into the second positioning groove, and the flat side of the second limiting block 560 can abut against the second clamping structure 520.

[0141] Based on the above, by setting the first clamping structure 510 including the clamping structure body, the first limiting block 550 and the second limiting block 560, the clamping structure body, the first limiting block 550 and the second limiting block 560 cooperate to form the first receiving groove 511 to limit the battery 700, which facilitates the improvement of the assembly efficiency of the battery 700 and the fixture 500 during the operation of the battery welding equipment.

[0142] Based on the battery welding equipment provided in the above example, the distance between the first limiting block 550 and the second limiting block 560 can be greater than the length of the core 730. Alternatively, the distance between the first limiting block 550 and the second limiting block 560 can be equal to the length of the core 730. This application's example comparison does not impose specific limitations.

[0143] For example, when the distance between the first limiting block 550 and the second limiting block 560 is greater than the length of the core 730, during the welding process between the current collector and the core 730, the clamping device 220 can make the core 730 and the first current collector 710 fit tightly together, and the welding device 300 completes the welding of the core 730 and the first current collector 710. When welding the second current collector 720 and the core 730, the battery 700 is fixed a second time, so that the side of the fixture 500 with the second current collector 720 fixed faces the welding device 300. The clamping device 220 can apply force to the welded core 730 and the first current collector 710, so that the end of the core 730 away from the first current collector 710 abuts against the second current collector 720, which facilitates the welding device 300 to complete the welding of the second current collector 720 and the core 730.

[0144] Since the core 730 is prone to deformation during movement, the distance between the first and second positioning grooves can be set to be greater than the length of the core 730. Specifically, the length of the receiving cavity can be set to be greater than the length of the core 730, thus providing deformation space for the core 730. The clamping device 220 can apply a force towards the first collector plate 710 to the core 730, ensuring a tight fit between the core 730 and the first collector plate 710, guaranteeing reliable welding between them. Alternatively, the clamping device 220 can apply a force towards the second collector plate 720 to the core 730, ensuring a tight fit between them, also guaranteeing reliable welding between them.

[0145] Based on the battery welding equipment provided in the above example, please refer to... Figure 7 The fixture 500 may further include a first magnetic element 530 and a second magnetic element 540. The first clamping structure 510 has at least two first mounting holes on the side facing the second clamping structure 520, and the at least two first mounting holes are spaced apart. The first magnetic element 530 is mounted in the first mounting hole.

[0146] The second clamping structure 520 has at least two second mounting holes on the side facing the first clamping structure 510. The at least two second mounting holes are spaced apart. The second magnetic element 540 is mounted in the second mounting holes. The magnetic direction of the second magnetic element 540 is opposite to that of the first magnetic element 530.

[0147] Since the magnetic direction of the second magnetic element 540 is opposite to that of the first magnetic element 530, when the first clamping structure 510 and the second clamping structure 520 are close to each other, the first magnetic element 530 can be attracted to the second magnetic element 540, ensuring the reliability of the attraction between the first clamping structure 510 and the second clamping structure 520.

[0148] When the first clamping structure 510 is provided with a mounting groove and the second clamping structure 520 is provided with a mounting protrusion, the first mounting hole can be spaced apart from the mounting groove and the second mounting hole can be spaced apart from the mounting protrusion.

[0149] As mentioned earlier, the side of the first clamping structure 510 facing the second clamping structure 520 can be rectangular. The first mounting hole and the mounting groove can be located on the same side of the rectangle. Alternatively, the first mounting hole and the mounting groove can be located on two adjacent sides of the rectangle, or they can be located on two opposite sides of the rectangle. This application example does not limit the specific setting of the first mounting hole.

[0150] The first mounting hole and the second mounting hole can be set concentrically, and there can also be a gap between the axis of the first mounting hole and the axis of the second mounting hole, as long as the first clamping structure 510 and the second clamping structure 520 can be engaged, the first magnetic component 530 and the second magnetic component 540 can be attracted together.

[0151] Based on the fixture 500 provided in this application example, on the basis of the fixed connection between the first clamping structure 510 and the second clamping structure 520, the first clamping structure 510 and the second clamping structure 520 are connected by the attraction of the first magnetic element 530 and the second magnetic element 540, which can further ensure the connection reliability of the first clamping structure 510 and the second clamping structure 520, and ensure the assembly reliability of the first clamping structure 510, the second clamping structure 520 and the battery cell.

[0152] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery welding device, characterized in that, Includes conveying devices, fixing devices, and welding devices; The conveying device is used to convey the fixture to the fixing device; The fixing device includes multiple installation stations spaced apart and multiple pressing structures spaced apart. The number of pressing structures is equal to the number of installation stations and corresponds one-to-one. The pressing structure is used to press the battery into the fixture. The fixing device can drive the fixture to the welding position. The welding position refers to the installation station corresponding to the welding device. The welding device is fixedly installed on the side of the press-fit structure away from the installation position; The fixing device also includes multiple dust collection structures spaced apart. The number of dust collection structures is equal to the number of installation stations and corresponds one-to-one. The dust collection structures are used to collect welding fumes generated during battery welding.

2. The battery welding equipment according to claim 1, characterized in that, The dust collection structure and the pressing structure are integrally formed.

3. The battery welding equipment according to claim 1, characterized in that, It also includes detection devices, The dust collection structure includes at least one dust collection port, which is connected to the detection device, which is used to detect the air parameters flowing through the dust collection port.

4. The battery welding equipment according to claim 3, characterized in that, The press-fit structure has a protective gas passage and a welding chamber that are connected inside. The end of the protective gas passage away from the welding chamber is connected to a protective gas source, and the welding chamber is connected to the dust collection port.

5. The battery welding equipment according to any one of claims 1 to 4, characterized in that, The fixing device includes a main turret, the installation station is fixedly installed on one side of the main turret, the pressing structure is installed on the other side of the main turret, the pressing structure can move toward the installation station, and the pressing structure corresponds to the installation station.

6. The battery welding equipment according to claim 1, characterized in that, It also includes a clamping device, which is located on the side of the installation station away from the pressing structure, and the clamping device is slidably connected to the installation station.

7. The battery welding equipment according to any one of claims 1 to 4, characterized in that, The welding apparatus includes at least one laser welder.

8. The battery welding equipment according to claim 1, characterized in that, The fixtures include: A first clamping structure is connected to the conveying device, and the first clamping structure is provided with a first receiving groove; The second clamping structure is fixedly connected to the first clamping structure. The second clamping structure is provided with a second receiving groove, which cooperates with the first receiving groove to form a receiving cavity, which is used to receive the winding core.

9. The battery welding equipment according to claim 8, characterized in that, The fixture further includes a first magnetic component and a second magnetic component; The first clamping structure has at least two first mounting holes on the side facing the second clamping structure, and the at least two first mounting holes are spaced apart. The first magnetic component is mounted in the first mounting hole. The second clamping structure has at least two second mounting holes on the side facing the first clamping structure. The at least two second mounting holes are spaced apart. The second magnetic component is mounted in the second mounting holes. The magnetic direction of the second magnetic component is opposite to that of the first magnetic component.

10. The battery welding equipment according to claim 5, characterized in that, The conveying device includes a conveyor belt and conveyor wheels; The conveyor belt is equipped with a fixing block, and the fixing block is connected to the fixture; The outer periphery of the conveyor wheel is provided with multiple locking grooves. The locking grooves are used to lock the fixture that is conveyed to the conveyor wheel by the conveyor belt. The conveyor wheel conveys the fixture located in the locking groove to the installation station by engaging with the main turret.

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