Battery string welding device

Abstract

A battery string welding device comprises a main welding table and further comprises a module library and a library moving device which is connected with the main welding table and used for driving the module library to move relative to the main welding table. The module library comprises a library frame and a plurality of welding modules mounted on the library frame; the welding module comprises a heating assembly for heating the battery string; the heating assembly includes a main heating element. According to the utility model, the welding modules are selected and replaced to meet the production requirements of different battery technologies, so that the battery strings of different technical routes can be simultaneously produced on the same production line, the occupied area of production line equipment is reduced, the production cost is increased and reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell assembly production, in particular to a battery string welding device. Background Art

[0002] In the production process of solar cell modules, cell string welding is the core process. The production equipment for cell string welding - cell string welding machine equipment, occupies a large area and has high equipment cost. It is one of the equipment with the largest investment in the module production line.

[0003] With the continuous advancement of solar cell technology, a variety of different cell designs and technologies are now available on the market, such as conventional bifacial cell structures and back-contact cell structures. Each cell technology has its own specific requirements during the manufacturing process. Due to the different cell technologies, the welding methods for these cells also vary. Existing cell string welding machines are generally designed to adapt to the production of specific types of battery modules and have relatively limited functions, and cannot handle multiple different cell technologies simultaneously.

[0004] This technical solution has some significant drawbacks. Due to the limitations of welding machines, when producing battery components using different technical routes, factories need to install multiple different types of welding machines and their supporting equipment on multiple production lines, making it impossible to produce them simultaneously on the same line. This not only limits production efficiency but also increases the floor space occupied by production line equipment. The purchase and maintenance of more equipment also increases production costs. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the utility model provides a battery string welding device, which adapts to the production requirements of different battery technologies by selecting and replacing welding modules, so that battery strings of different technical routes can be produced simultaneously on the same production line, reducing the floor space occupied by production line equipment, increasing and reducing production costs, and improving production efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0007] A battery string welding device comprises a main soldering station, a module library, and a library transfer device connected to the main soldering station and used to drive the module library to move relative to the main soldering station; the module library comprises a library frame and a plurality of welding modules mounted on the library frame; the welding module comprises a heating assembly for heating the battery string; the heating assembly comprises a main heating element.

[0008] Different welding modules are suitable for different battery technologies. Different battery technologies have different welding heating, welding contact and other technologies. The functional components that implement these technologies are collected and prefabricated into welding modules according to the category of battery welding technology. The technology of the main soldering station is the same for welding of different battery technologies. The module library can store multiple welding modules suitable for different battery technologies. The main reason for the difference in welding modules is that the heating implementation methods of different battery strings are different, and different welding modules contain different heating components to achieve the heating function. The welding module is selected according to different battery technologies. The library transfer device drives the module library to move to the position where the welding module and the main soldering station are compatible. Then the welding module can be moved to the main soldering station to complete the module replacement.

[0009] Preferably, the heating component further comprises an auxiliary heating platform.

[0010] The heating assembly of the welding module may include only the main heating element, or may include the main heating element and the auxiliary heating platform. Different welding modules may include different main heating elements and the same auxiliary heating platform, or may include different main heating elements and different auxiliary heating platforms.

[0011] Preferably, the main heating element comprises a heating actuator for executing a specific heating process and a heating controller for controlling the execution of the heating actuator.

[0012] Preferably, the main heating element is an optical heating element or a contact heating element.

[0013] The main heating element can be an optical heating element in an optical heating mode or a contact heating element in a contact heating mode.

[0014] Preferably, the module library further comprises a pusher device for moving the welding module in or out relative to the library frame.

[0015] The welding module is selected based on the different battery technologies. The module library is moved by the library transfer device to the position where the welding module fits the main welding station. The module ejection device then pushes the welding module onto the main welding station, completing the module replacement. The ejection device can be automated or manually operated.

[0016] Preferably, the welding module includes a module frame for mounting the welding module on the main soldering station; the module frame is provided with a module electrical interface matching the main soldering station.

[0017] Different welding modules share the same module frame to ensure consistent compatibility with the main soldering station. The module electrical interface on the module frame matches the main soldering station, allowing for smooth connection between the replacement welding module and the main soldering station's electrical interface. The module frame physically connects the welding module to the main soldering station, while the module electrical interface provides the electrical connection.

[0018] Preferably, the main soldering station includes a soldering station track; a positioning groove is provided at one end of the soldering station track; a main soldering station electrical interface is provided in the positioning groove; the side of the welding module includes a positioning plug for inserting into the positioning groove; the module electrical interface is provided on the positioning plug; when the positioning plug is inserted into the positioning groove, the main soldering station electrical interface is electrically connected to the module electrical interface.

[0019] After the welding module is removed from the rack, it must be positioned immediately. The blocking column prevents the welding module from detaching from the track and the main soldering station due to low friction on the soldering station track or high inertia, potentially damaging the module. The use of positioning tabs and positioning slots prevents vertical movement of the welding module during the welding process. After the welding module is removed from the rack, it slides along the track until it is stopped by the positioning assembly. When the positioning tab is inserted into the positioning slot, the matching module electrical interface and the main soldering station electrical interface are electrically connected. This design makes the connection process simpler and more efficient.

[0020] Preferably, the soldering station track is provided with a fixing assembly for fixing the welding module; the fixing assembly includes a positioning pin, a positioning hole provided on the soldering station track and a positioning pin hole provided at the bottom of the module frame; the positioning pin passes through the positioning hole and is inserted into the positioning pin hole to fix the welding module.

[0021] After the welding module is removed from the module library, a fixing assembly is installed on the welding track to prevent the welding module from moving left and right on the welding track or causing shaking during welding. After the welding module is restrained in the set position by the positioning assembly, the positioning pin at the bottom of the welding track is inserted through the positioning hole and then into the positioning pin hole, preventing the welding module slider from sliding further on the welding track.

[0022] Preferably, the library rack divides the space of the module library into multiple bins; there is at least one empty bin among the bins for recovering the welding modules on the main welding table.

[0023] The module library is configured with multiple slots. Each slot can be configured with a set of pre-installed welding modules or can be empty. There must be an empty slot in the module library to recycle the welding modules currently in the main welding station.

[0024] Preferably, it further comprises an automatic detection module for automatically detecting various performance indicators of the welding module and providing a report after the welding module is returned to the module library.

[0025] Compared with the prior art, the beneficial effects of the present invention are embodied in:

[0026] 1. By utilizing a module library that stores and drives multiple welding modules, the welding modules can be interchanged, enabling the compatible welding of battery strings across multiple battery technologies within a single production line. This utility model not only adapts to the production needs of diverse battery technologies but also significantly reduces the footprint of production line equipment, effectively lowering production costs while improving production efficiency, bringing significant technical advantages and economic benefits to the battery manufacturing industry.

[0027] 2. The use of a coordinated positioning insert and positioning slot prevents vertical movement of the welding module during the welding process. The gradually increasing width of the slot facilitates the precise insertion of the positioning insert into the positioning slot, ensuring the correct positioning of the welding module on the main welding station. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a structural diagram of Example 1;

[0029] Figure 2 1 is a schematic structural diagram of a welding module according to Example 1;

[0030] Figure 3 1 is a schematic structural diagram of the main soldering station of Example 1;

[0031] Figure 4 Schematic diagram of the module library structure of Example 1;

[0032] Figure 5 It is a structural diagram of the module library maintenance compartment door of Example 1.

[0033] in:

[0034] 1. Main soldering station; 2. Module library; 3. Library transfer device;

[0035] 11. Soldering station track; 12. Positioning assembly; 13. Main soldering station electrical interface; 14. Fixing assembly; 21. Storage rack; 22. Welding module; 23. Ejector device; 24. Storage space; 25. Inspection door;

[0036] 121, blocking column; 141, positioning pin; 142, positioning hole; 143, positioning pin hole; 221, module frame; 222, module electrical interface; 223, welding mold slider; 224, positioning insert; 225, clamping bolt; 226, heating assembly; 231, ejector rail; 232, ejector slider; 233, ejector tentacle;

[0037] 1211, positioning slot; 2261, heating actuator; 2262, heating controller; 2331, clamping nut; 2332, telescopic rod. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is further explained with reference to specific figures. However, the utility model is not limited to the following implementation cases.

[0039] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in this utility model without affecting the efficacy and purpose that can be achieved by the present utility model.

[0040] Example 1:

[0041] like Figure 1 and Figure 2 The battery string welding device shown in the figure comprises a main welding station 1, a module library 2 and a library transfer device 3 connected to the main welding station 1 and used to drive the module library 2 to move relative to the main welding station 1; Figure 2 、 Figure 3 As shown, the module library 2 includes a library frame 21 and a plurality of welding modules 22 mounted on the library frame 21; the welding module 22 includes a heating component 226 for heating the battery string; and the heating component 226 includes a main heating element.

[0042] Different welding modules 22 are adapted to different battery technologies. Different battery technologies have different welding heating, welding contact and other technologies. The functional components that implement these technologies are assembled and prefabricated into welding modules 22 according to the category of battery welding technology. The technology of the main welding station 1 is the same technology for welding of different battery technologies. The module library 2 can store multiple welding modules 22 adapted to different battery technologies. The main reason for the difference in welding modules 22 is that the heating implementation methods of different battery strings are different. Different welding modules contain different heating components 226 that realize the heating function. The welding module 22 is selected according to different battery technologies, and the library transfer device 3 drives the module library 2 to move to the position where the welding module 22 is adapted to the main welding station 1. Then the welding module 22 can be replaced on the main welding station 1 to complete the module replacement.

[0043] like Figure 2As shown, preferably, the heating component further includes an auxiliary heating platform. The heating component of the welding module may include only a main heating element, or may include a main heating element and an auxiliary heating platform. Different welding modules may include different main heating elements and the same auxiliary heating platform, or may include different main heating elements and different auxiliary heating platforms. A soldering strip limiting groove is provided on the surface of the auxiliary heating platform, and each soldering strip limiting groove corresponds to a soldering strip. More preferably, the main heating element includes a heating actuator 2261 and a heating controller 2262, and the heating actuator 2261 and the heating controller 2262 are both mounted on the module frame 221. The main heating element may be an optical heating element or a contact heating element to use different heating modes.

[0044] The module library 2 also includes a pusher 23 for moving the welding module 22 in and out of the library frame 21. The welding module 22 is selected based on the battery technology. The library transfer device 3 drives the module library to a position where the welding module 22 fits within the main soldering station 1. The pusher 23 then pushes the welding module 22 onto the main soldering station 1, completing the module replacement. The pusher 23 can be automated or manually operated.

[0045] Specifically, the welding module 22 includes a module frame 221 for mounting the welding module 22 on the main soldering station 1; the module frame 221 is provided with a module electrical interface 222 that matches the main soldering station 1. The module frames 221 of different welding modules 22 are identical so that they can be uniformly matched with the main soldering station 1. The module electrical interface 222 on the module frame 221 matches the main soldering station 1 and is used to smoothly connect the replaced welding module 22 to the electrical interface of the main soldering station 1. The module frame 221 realizes the physical connection between the welding module 22 and the main soldering station 1, and the module electrical interface 222 realizes the electrical connection between the welding module 22 and the main soldering station 1.

[0046] like Figure 4 As shown, the main soldering station 1 includes a soldering station track 11, and a soldering die slider 223 is provided at the bottom of the module frame 221 to match the soldering station track 11. In order to improve the efficiency of moving the soldering module 22 in or out by the die pushing device 23, a soldering die slider 223 is provided at the bottom of the module frame 221 of the soldering module 22. The slider is adapted to the soldering station track 11 and can drive the soldering module 22 to slide on the soldering station track 11, so that the soldering module 22 can be replaced smoothly and efficiently.

[0047] Specifically, one end of the soldering station track 11 is connected to the positioning assembly 12; the positioning assembly 12 includes a blocking column 121 for contacting and positioning the side of the soldering module 22; the blocking column 121 is provided with a positioning slot 1211, and the side of the soldering module 22 includes a positioning plug 224 for inserting into the positioning slot 1211; the width of the positioning slot 1211 gradually increases as it approaches the positioning plug 224. The main soldering station electrical interface 13 is provided in the positioning slot 1211; the module electrical interface 222 is provided on the positioning plug 224; when the positioning plug 224 is inserted into the positioning slot 1211, the main soldering station electrical interface 13 is electrically connected to the module electrical interface 222. After the soldering module 22 is removed from the storage rack 21, it slides on the soldering station track 11 until it is stopped by the positioning assembly 12. When the positioning plug 224 is inserted into the positioning slot 1211, the matching module electrical interface 222 and the main soldering station electrical interface 13 are electrically connected.

[0048] Specifically, the welding station track 11 is provided with a fixing assembly 14 for securing the welding module 22. The fixing assembly 14 includes a positioning pin 141, a positioning hole 142 provided on the welding station track 11, and a positioning pin hole 143 provided at the bottom of the module frame 221. The positioning pin 141 passes through the positioning hole 142 and is inserted into the positioning pin hole 143 to secure the welding module 22. After the welding module 22 is restrained in a set position by the positioning assembly 12, the positioning pin 141 at the bottom of the welding station track 11 passes through the positioning hole 142 and is inserted into the positioning pin hole 143, preventing the welding module slider 223 from sliding further on the welding station track 11.

[0049] Specifically, the module frame 221 is provided with a clamping bolt 225. The ejection device 23 includes an ejection track 231 mounted on the storage frame 21, an ejection slider 232 adapted to the ejection track 231, and an ejection tentacle 233 fixedly connected to the ejection slider 232. The ejection tentacle 233 includes a clamping nut 2331 that is detachably connected to the clamping bolt 225. The welding die slider 223 is adapted to the ejection track 231. The ejection slider 232 drives the ejection tentacle 233 to slide within the ejection track 231. The ejection tentacle 233 includes a telescopic rod 2332 that is fixedly connected to the clamping nut 2331. When the clamping bolt 225 needs to be connected, the ejection tentacle 233 can be extended until it can be connected. After connecting to the clamping bolt 225, the welding module 22 can be moved a certain distance into the storage frame 21 to restore its normal length.

[0050] The module library 2 is divided into multiple bins 24 by a rack 21. Each bin 24 is equipped with a mold ejector 23. At least one of the bins 24 is empty, used to retrieve welding modules 22 from the main soldering station 1. The module library 2 is configured with multiple bins 24, each of which can contain a set of pre-installed welding modules 22 or be empty. The module library 2 must have at least one empty bin to retrieve the welding module 22 currently on the main soldering station 1.

[0051] like Figure 5 As shown, a maintenance door 25 is provided on the side of the module library 2 away from the library transfer device 3 for inspecting the welding modules 22. Without the maintenance door 25, the welding modules 22 that have not been replaced must be removed using the mold ejection device 23 to inspect them. Accessing the maintenance door 25 makes the process simple and efficient.

[0052] The present invention can be used in conjunction with a control system. The control system has the functions of identifying battery technology, selecting welding modules 22, and controlling the operation and movement of the module library 2 and the die ejection device 23. Upon receiving a die change command, the module library 2 moves to an empty position via 3 to align with the current welding module 22 on the main welding station 1. The fixing assembly 14 on the main welding station 1 exits the locked state, and the die ejection tentacles 233 of the module library 2 connect with the clamping bolts 225, driving the welding module 22 out of the welding station track 11 to an empty position, and disconnecting the electrical interface between the welding module 22 and the main welding station 1. The die ejection device 23 recycles the current welding module 22. The module library 2 then moves to a position where the welding module 22 to be used is aligned with the main welding station 1. The die ejection device 23 loads the welding module 22 to be used onto the welding station track 11 and completes the connection and fixation of the electrical interface. Furthermore, the present invention can be used in conjunction with a welding module automatic detection function component, which automatically tests the performance of the welding module 22 each time it returns to the position 24.

[0053] The locating pin 141 can be inserted through the positioning hole 142 and into the locating pin hole 143 via a lifting mechanism to secure the welding module 22. The same type of locating pin can also be provided on the ejection track 231 and connected to the ejection slider 232. When the welding module 22 enters the storage compartment 24, the locating pin cooperates with the lifting mechanism to pass through the locating pin hole at the bottom of the module frame 221, thus securing the welding module 22 in the storage compartment 24. The lifting mechanism can be driven by an actuator such as a cylinder or a screw.

[0054] By storing multiple welding modules 22 and driving them in motion, the module library 2 allows for interchangeable welding modules 22, enabling the welding of multiple battery cell strings compatible with multiple battery technologies within a single production line. This utility model not only adapts to the production needs of different battery technologies, but also significantly reduces the footprint of production line equipment, effectively lowering production costs while improving production efficiency, bringing significant technical advantages and economic benefits to the battery manufacturing industry.

[0055] Preferably, an automatic detection module can be configured, and each time the welding module 22 is returned to the module library 2, various performance indicators of the welding module 22 can be automatically detected and a report can be given.

Claims

1. A battery string welding device, comprising a main welding station (1), characterized in that: It also includes a module library (2) and a library transfer device (3) connected to the main soldering station (1) and used to drive the module library (2) to move relative to the main soldering station (1); the module library (2) includes a library frame (21) and a plurality of welding modules (22) installed on the library frame (21); the welding module (22) includes a heating component (226) for heating a battery string; and the heating component (226) includes a main heating element.

2. The battery string welding device according to claim 1, characterized in that: The heating assembly (226) further includes an auxiliary heating platform.

3. The battery string welding device according to claim 2, characterized in that: The main heating element includes a heating actuator (2261) for executing a specific heating process and a heating controller (2262) for controlling the execution of the heating actuator.

4. The battery string welding device according to claim 3, characterized in that: The main heating element is an optical heating element or a contact heating element.

5. The battery string welding device according to claim 1, characterized in that: The module library (2) further comprises a pusher device (23) for moving the welding module (22) in or out relative to the library frame (21).

6. The battery string welding device according to claim 1, characterized in that: The welding module (22) comprises a module frame (221) for mounting the welding module (22) on the main welding platform (1); the module frame (221) is provided with a module electrical interface (222) matching the main welding platform (1).

7. The battery string welding device according to claim 6, characterized in that: The main soldering station (1) comprises a soldering station track (11); a positioning groove (1211) is provided at one end of the soldering station track (11); a main soldering station electrical interface (13) is provided in the positioning groove (1211); a side surface of the soldering module (22) comprises a positioning insert (224) for inserting into the positioning groove (1211); the module electrical interface (222) is provided on the positioning insert (224); when the positioning insert (224) is inserted into the positioning groove (1211), the main soldering station electrical interface (13) is electrically connected to the module electrical interface (222).

8. The battery string welding device according to claim 7, characterized in that: The welding platform rail (11) is provided with a fixing assembly (14) for fixing the welding module (22); the fixing assembly (14) comprises a positioning pin (141), a positioning hole (142) provided on the welding platform rail (11), and a positioning pin hole (143) provided at the bottom of the module frame (221); the positioning pin (141) passes through the positioning hole (142) and is inserted into the positioning pin hole (143) to fix the welding module (22).

9. The battery string welding device according to claim 8, characterized in that: The library rack (21) divides the space of the module library (2) into a plurality of bins (24); at least one of the bins (24) is empty and is used to recycle the welding modules (22) on the main welding station (1).

10. The battery string welding device according to any one of claims 1 to 9, characterized in that: It also includes an automatic detection module, which is used to automatically detect various performance indicators of the welding module (22) after the welding module (22) is returned to the module library (2) and provide a report.

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