Welding device and method for solar cell array component

Abstract

The invention discloses a welding device and method for a solar cell array component, and the device comprises a feeding and discharging module which is used for feeding a diode and a diode interconnection piece, and discharging the welded solar cell array component; the welding module is used for receiving and welding the diode and the diode interconnection sheet; the test monitoring module is in communication connection with the feeding and discharging module and the welding module and is used for monitoring the whole welding process and collecting and interacting information; the automatic control module comprises a PLC, and the automatic control module is in communication connection with the feeding and discharging module, the welding module and the testing and monitoring module and controls the feeding and discharging action, the welding action and the testing and monitoring process; and the upper computer system is in communication connection with the feeding and discharging module, the welding module, the test monitoring module and the automatic control module so as to control the whole welding process. According to the invention, the welding between the diode and the diode interconnection sheet is completed by adopting an automatic means, so that the adaptability and reliability of a cell array component are improved.

Description

Technical Field

[0001] The invention relates to the field of solar cell array components, and in particular to a welding device and method for solar cell array components. Background Art

[0002] In the process of making solar cell arrays, the connection between solar cell array components includes the connection between wires and silver foil (silver-plated Kovar), the connection between components and silver foil (silver-plated Kovar), etc. In the process of connection, soft soldering technology is often used, but this soft soldering technology has the following disadvantages: 1. The solder used in soft soldering is "cold brittle" under extremely low temperature conditions. After experiencing tens of thousands of hot and cold cycles, the soldering will fail due to thermal fatigue, which will lead to a reduction in the life of the welded components; 2. The solder used in soft soldering has a low melting point of only 260℃ to 300℃, which can easily cause the welded components to be disconnected in the space environment, making the components after welding not stable; 3. The manual soldering method of soft soldering is inefficient, the quality after welding is uncontrollable, and it is difficult to trace the welding history information.

[0003] Therefore, considering the above problems existing in the welding process, it is necessary to change the welding method of solar cell array components to improve the stability of the welding process of solar cell array components and the reliability of solder joints. Summary of the invention

[0004] The object of the present invention is to provide a welding device and method for solar cell array components, which uses automated means to complete the resistance welding between the diode and the diode interconnection sheet in the solar cell array components, thereby improving the adaptability and reliability of the solar cell array components after welding.

[0005] To achieve the above object, the present invention provides a solar cell array component welding device, which is used to weld diodes and diode interconnection sheets to form solar cell array components. The welding device includes:

[0006] Loading and unloading modules, used for loading diodes and diode interconnection sheets, and unloading soldered solar cell array components;

[0007] A welding module is arranged at one side of the loading and unloading module, and receives and welds the diode and the diode interconnection sheet;

[0008] The test monitoring module is connected to the loading and unloading module and the welding module to monitor the whole welding process, collect information and interact;

[0009] An automation control module, comprising a PLC controller, which is in communication with the loading and unloading module, the welding module and the test monitoring module to control the loading and unloading action, the welding action and the test monitoring process;

[0010] The upper computer system is connected in communication with the loading and unloading modules, the welding module, the testing and monitoring module, and the automatic control module to control the entire welding process.

[0011] Optionally, the loading and unloading module comprises: a first loading bin, comprising multiple layers of first loading bin trays, each of the first loading bin trays being used to place diodes of different models;

[0012] A second loading bin is arranged in parallel on one side of the first loading bin, the second loading bin comprises multiple layers of second loading bin plates, each of the second loading bin plates is used to place diode interconnection sheets of different types;

[0013] A lower material bin is arranged in parallel on a side of the second upper material bin away from the first upper material bin, the lower material bin comprises multiple layers of lower material bin trays, each of the lower material bin trays is used to place different types of the welded solar cell array components;

[0014] The manipulator is arranged at a position directly opposite to the second loading bin and is in communication with the PLC controller, and is used for grabbing the diodes and diode interconnection sheets before welding to the welding module during loading, and for grabbing the solar cell array components after welding to the unloading bin during unloading.

[0015] Optionally, the first loading bin and the second loading bin are both connected to the PLC controller, and the first loading bin tray at a specified layer in the first loading bin and the second loading bin tray at a specified layer in the second loading bin are automatically lifted out through control instructions of the PLC controller;

[0016] The lower material bin is connected to the PLC controller, and the lower material bin tray at a designated layer in the lower material bin is automatically lifted out through control instructions of the PLC controller.

[0017] Optionally, the manipulator has a built-in first CCD positioning device, which is communicatively connected to the host computer system to upload the photographed and identified information of the diode and the diode interconnection sheet to the host computer system.

[0018] Optionally, the welding module comprises:

[0019] A welding platform, which is in communication with the PLC controller to place the diode and the diode interconnection sheet before welding and move to the test monitoring module after welding is completed;

[0020] A second CCD positioning device is connected to the host computer system for communication to capture the shape, size and position information of the diode and the diode interconnection sheet, and transmits the information to the host computer system to calculate the solder joint position;

[0021] A welding jig, disposed on the welding platform, to transfer the diode and the diode interconnection sheet from the manipulator to the welding platform;

[0022] A pre-pressing mechanism is disposed on the welding platform and is in communication connection with the PLC controller to pre-press and flatten the transferred diodes and diode interconnection sheets;

[0023] A welding head, mounted on the welding platform, the welding head comprising a welding electrode for welding the diode before welding and the diode interconnection sheet;

[0024] A welding head movement mechanism, one end of which is connected to the welding head and the other end of which is connected to the PLC controller, so as to move the welding head to a designated welding point;

[0025] A welding power source, one end of which is communicatively connected to the PLC controller and the other end of which is electrically connected to the welding electrode in the welding head to provide power to the welding electrode;

[0026] a force sensor, located in the welding platform, sensing the downward pressure exerted by the welding head on the diode and the diode interconnection sheet;

[0027] A pressure monitor, one end of which is electrically connected to the force sensor and the other end of which is communicatively connected to the PLC controller, is used to monitor the downward pressure generated by the welding head and generate an electrical signal to feed back to the PLC controller.

[0028] Optionally, the welding module further comprises a grinding mechanism;

[0029] The grinding mechanism is arranged on the welding platform and connected to the PLC controller to grind the welding head to enhance the welding current passing through the welding electrode.

[0030] Optionally, when the pressure monitor detects that the welding pressure of the welding head reaches a set value, an electrical signal is generated and fed back to the PLC controller, and then the PLC controller controls the welding head movement mechanism to stop moving downward, and controls the welding power supply to discharge and perform welding;

[0031] When the welding current of the welding electrode is lower than the set value, the welding is stopped, and the grinding mechanism is called to grind the electrode end surface of the welding electrode to increase the welding current.

[0032] Optionally, the test monitoring module includes:

[0033] The testing system includes a tensile testing machine to detect the tensile strength of the solar array components after welding;

[0034] Camera, remote monitoring of welding status;

[0035] The test monitoring network module is communicatively connected with the test system, the camera and the upper computer system to collect and store the welding process and test result information.

[0036] Optionally, the welding head movement mechanism controls the welding head to achieve a welding accuracy of ±0.1mm during welding; the verticality of the welding head and the welding fixture reaches 90°±1°; the grinding direction of the grinding mechanism is 90°±1° to the electrode end face direction of the welding electrode.

[0037] The present invention also provides a method for welding components of a solar cell array, which is implemented by using the above welding device. The welding method comprises the following steps:

[0038] Step S1, loading the diodes and diode interconnection sheets before welding;

[0039] Step S2, performing solder joint identification and high-precision soldering on the diode and the diode interconnection sheet;

[0040] Step S3, performing performance testing on the soldered solar cell array components;

[0041] Step S4, cutting the inspected solar cell array components;

[0042] Wherein, the step S1 comprises:

[0043] S1.1, controlling the lifting out of the first loading bin tray at a designated layer in the first loading bin and the second loading bin tray at a designated layer in the second loading bin through the upper computer system;

[0044] S1.2, using the manipulator to absorb the diodes of a specific type in the first loading bin tray of the lifting layer and to grab the diode interconnection sheets of a specific type in the second loading bin tray of the lifting layer;

[0045] S1.3, transferring the diode and the diode interconnection sheet from the manipulator to the welding platform by means of a welding jig;

[0046] Wherein, the step S2 comprises:

[0047] S2.1, pre-pressing the diode and the diode interconnection sheet transferred to the welding platform by a pre-pressing mechanism to ensure the flatness of the diode and the diode interconnection sheet;

[0048] S2.2, photographing the shape, size and position information of the diode and the diode interconnection sheet by the second CCD positioning device, and uploading the information to the upper computer system, so as to calculate the position of the welding point of the diode and the diode interconnection sheet for the model by the upper computer system;

[0049] S2.3, the upper computer system sends the calculated welding position information to the PLC controller; the PLC controller controls the movement of the welding head movement mechanism, thereby controlling the welding head to reach the top of the designated welding point;

[0050] S2.4, the PLC controller controls the welding head to continue to move downward until the pressure monitor detects that the welding pressure reaches a set value, the welding head stops moving downward, and controls the welding power supply to discharge, and then the welding head welds in real time according to the preset welding pressure, welding time and welding voltage;

[0051] S2.5, when the welding current of the welding electrode is lower than the set value, the welding is stopped, and the grinding mechanism is called to grind the electrode end surface of the welding electrode to increase the welding current;

[0052] Wherein, the step S4 comprises:

[0053] S4.1, controlling the lifting out of the lower material bin tray at a designated layer in the lower material bin by the upper computer system;

[0054] S4.2, the robot grabs the inspected solar cell array components and places them into the unloading bin tray, thus completing unloading.

[0055] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0056] 1. The present invention provides a solar cell array component welding device and method, which controls, monitors and supervises the entire welding process through a set of automated welding devices, thereby improving the positioning accuracy of the welding points, the stability of the welding process and the efficiency of the welding process;

[0057] 2. The present invention provides a solar cell array component welding device and method, which adopts information and intelligent means, and can track the solar cell array components before, during and after welding in real time, providing a guarantee for tracing product problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a schematic diagram of the automatic welding device for solar cell array components of the present invention;

[0059] Figure 2 It is a welding schematic diagram of the present invention;

[0060] Figure 3 The figure is an operation flow chart of the solar cell array component welding device of the present invention. DETAILED DESCRIPTION

[0061] The following will be combined with the attached Figures 1 to 3 , the technical content, structural features, objectives achieved and effects of the present invention are described in detail through preferred embodiments.

[0062] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the embodiments of the present invention, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention.

[0063] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] The present invention provides a solar cell array component welding device, which is used to weld a diode 202 and a diode interconnection sheet 201 to form a solar cell array component. Figure 1As shown, the welding device for solar cell array components includes: a loading and unloading module 100, located at one side of the welding device, for loading the diode 202 and the diode interconnection sheet 201 before welding, and unloading the solar cell array components after welding; a welding module 300, arranged at one side of the loading and unloading module 100, for receiving and welding the diode 202 and the diode interconnection sheet 201; a test monitoring module, which is connected to the loading and unloading module 100 and the welding module 300, and is used to monitor the entire welding process, collect information and interact; an automation control module, including a PLC controller (programmable logic controller), which is connected to the loading and unloading module 100, the welding module 300 and the test monitoring module, and is used to control the loading and unloading action, the welding action and the test monitoring process; a host computer system, which is connected to the loading and unloading module 100, the welding module 300, the test monitoring module and the automation control module, and is used to control the entire automated welding process.

[0066] The loading and unloading module 100 comprises: a first loading bin 101, comprising multiple layers of first loading bin plates, each of which is used to place diodes 202 of different types; a second loading bin 102, arranged in parallel on one side of the first loading bin 101, the second loading bin 102 comprising multiple layers of second loading bin plates, each of which is used to place diode interconnection sheets 201 of different types; a lowering bin 103, arranged in parallel on one side of the second loading bin 102 away from the first loading bin 101, the lowering bin 103 comprising multiple layers of lowering bin plates, each of which is used to place solar cell array components of different types after welding; a manipulator, arranged at a position opposite to the second loading bin 102 and close to the center of the welding device, and connected to the PLC controller for communication, for grabbing the diodes 202 and diode interconnection sheets 201 before welding to the welding module 300 during loading, and for grabbing the solar cell array components after welding to the lowering bin 103 during unloading.

[0067] The first loading bin 101 and the second loading bin 102 are both connected to the PLC controller, and can automatically lift out the first loading bin tray at a specified layer in the first loading bin 101 and the second loading bin tray at a specified layer in the second loading bin 102 through the control command of the PLC controller. The lowering bin 103 is connected to the PLC controller, and can automatically lift out the lowering bin tray at a specified layer in the lowering bin 103 through the control command of the PLC controller when unloading.

[0068] The manipulator is a six-axis manipulator and adopts a multi-suction head and multi-claw mode, which can absorb the planar diodes 202 located in the first loading bin 101 and grab the diode interconnection sheet 201 located in the second loading bin 102. Therefore, during the loading process, the manipulator can absorb the diodes 202 of a specific model and grab the diode interconnection sheet 201 of a specific model through the automatic lifting of the first loading bin tray of the specified layer and the second loading bin tray of the specified layer. During the unloading process, the manipulator can grab the solar cell array components of a specific model and place them in the unloading bin tray through the automatic lifting of the unloading bin tray of the specified layer.

[0069] Furthermore, the manipulator is built with a first CCD (charge coupled device) positioning device, which is communicatively connected to the host computer system and is used to upload the photographed and identified information of the diode 202 and the diode interconnection sheet 201 to the host computer system.

[0070] Specifically, the first CCD positioning device includes a first positioning camera, which can capture the shape and size information of the sucked diode 202 and the captured diode interconnection sheet 201, and upload the information to the host computer system for record.

[0071] Among them, Figure 2As shown, the welding module 300 includes: a welding platform, which is connected to the PLC controller for placing the diode 202 and the diode interconnection sheet 201 before welding, and moving to the test monitoring module after welding is completed; a second CCD positioning device, which is connected to the host computer system for photographing the shape, size and position information of the diode 202 and the diode interconnection sheet 201, and sending it to the host computer system to calculate the welding point position; a welding fixture, which is arranged on the welding platform, and is used to transfer the diode 202 and the diode interconnection sheet 201 from the manipulator to the welding platform; a pre-pressing mechanism, which is arranged on the welding platform, and is connected to the PLC controller for pre-pressing and flattening the transferred diode 202 and the diode interconnection sheet 201; a welding head, which is installed on the welding platform, and the welding head includes a welding electrode 301 , used to weld the diode 202 and the diode interconnection sheet 201 before welding; a welding head movement mechanism, one end of which is connected to the welding head and the other end is connected to the PLC controller, used to move the welding head so that the welding head reaches the specified welding point; a welding power supply, one end of which is connected to the PLC controller for communication and the other end is electrically connected to the welding electrode 301 in the welding head and provides power for the welding electrode 301; a force sensor, located in the welding platform, used to sense the force pressed down by the welding head to the surface of the diode 202 and the diode interconnection sheet 201; a pressure monitor, one end of which is electrically connected to the force sensor and the other end is connected to the PLC controller for communication, used to monitor the pressure generated by the welding head on the diode 202 and the diode interconnection sheet 201 before welding during the pressing process, and generate an electrical signal to feed back to the PLC controller.

[0072] Wherein, the welding module 300 further includes a grinding mechanism; the grinding mechanism is arranged on the welding platform, connected to the PLC controller, and is used for grinding the welding head to enhance the welding current passing through the welding electrode 301.

[0073] Furthermore, the second CCD positioning device includes a second positioning camera, which is communicatively connected to the host computer system and is used to capture the shape, size and position information of the diode 202 and the diode interconnection sheet 201 placed on the welding platform, and then send this information to the host computer system to automatically calculate the solder joints of the diode 202 and the diode interconnection sheet 201, and send the identified solder joint information to the PLC controller.

[0074] Furthermore, a servo motion mechanism is provided between the welding jig and the welding platform, and the servo motion mechanism is communicatively connected with the PLC controller, so that the movement of the mobile jig can be accurately controlled by the servo motion mechanism.

[0075] Furthermore, the welding platform is fixed on the welding device of the solar cell array components through an XY two-axis motion mechanism. Furthermore, after the welding is completed, the welding platform will automatically transfer the welded solar cell array components to the test monitoring module after receiving the control instruction of the PLC controller to detect the solar cell array components.

[0076] Furthermore, an electric cylinder is arranged in the welding head movement mechanism to realize the single-axis up and down movement of the welding head.

[0077] The welding process is as follows Figure 2 As shown, further, when the pressure monitor detects that the welding pressure of the welding head reaches the set value, an electrical signal will be generated and fed back to the PLC controller, and then the PLC controller controls the welding head movement mechanism to stop moving downward, and controls the welding power supply to discharge to implement welding; during the welding process, when the welding current of the welding electrode 301 is lower than the set value, the welding will be stopped, and the grinding mechanism will be called to grind the electrode end surface 311 of the welding electrode 301 to enhance the welding current.

[0078] More specifically, the welding head movement mechanism can control the welding head to achieve a welding accuracy of ±0.1mm during welding; the verticality of the welding head and the welding fixture reaches 90°±1°; when the grinding mechanism grinds the electrode end surface 311 of the welding electrode 301, the grinding direction is 90°±1° to the direction of the electrode end surface 311.

[0079] In a specific embodiment of the present invention, the model of the welding power source is MCW750 produced by AVIO; the welding head is NA132; the pressure monitor is QC-100A; the force sensor is TJS-20R, and the welding electrode 301 of the welding head is EP-0420-00F.

[0080] The test monitoring module includes: a test system, including a tensile testing machine, for detecting the tensile strength of the solar cell array components after welding; a camera, for remotely monitoring the welding status; a test monitoring network module, which is communicatively connected with the test system, the camera and the upper computer system, and is used to collect and store the welding process and test result information, so as to monitor the solar cell array components in welding and trace the product problems of the solar cell array components after welding.

[0081] In a specific embodiment of the present invention, the angle of the tensile testing machine in the testing system is 180°, the measuring range is not less than 150N, the accuracy is 0.01N, and the tensile loading speed is 0.1mm / min to 0.5mm / min.

[0082] Among them, the automation control module also includes: an equipment control layer and a monitoring layer; the equipment control layer and the monitoring layer are connected to the upper computer system for communication upward to receive the shape, size, position and other information of the diode 202 and the diode interconnection sheet 201 before welding; the equipment control layer and the monitoring layer are connected to the PLC controller downward to control the loading and unloading module 100, the welding module 300 and the test monitoring module respectively through the PLC controller, thereby automatically controlling the loading and unloading process, the welding operation, and monitoring the test process.

[0083] Furthermore, the automatic control module provides multiple operation modes, such as human-machine interface operation and graphical interface operation, which can assist the staff to operate and maintain the welding device of the solar cell array components.

[0084] like Figure 3 As shown, the present invention also provides a method for automatic welding using the welding device for solar cell array components, comprising the following steps:

[0085] Step S1 , loading the diode 202 and the diode interconnection sheet 201 before welding.

[0086] S1.1, controlling the lifting out of the first loading bin tray of the designated layer in the first loading bin 101 and the second loading bin tray of the designated layer in the second loading bin 102 through the upper computer system;

[0087] S1.2, using the manipulator to absorb the diode 202 of a specific type located in the first loading bin tray of the lifting layer and to grab the diode interconnection sheet 201 of a specific type located in the second loading bin tray of the lifting layer;

[0088] S1.3, transferring the diode 202 and the diode interconnect sheet 201 from the manipulator to the welding platform by means of a welding jig;

[0089] Step S2, performing solder joint identification and high-precision soldering on the diode 202 and the diode interconnection sheet 201.

[0090] S2.1, pre-pressing the diode 202 and the diode interconnection sheet 201 transferred to the welding platform by a pre-pressing mechanism to ensure the flatness of the diode 202 and the diode interconnection sheet 201;

[0091] S2.2, photographing the shape, size and position information of the diode 202 and the diode interconnection sheet 201 by the second CCD positioning device, and uploading the information to the upper computer system, so as to calculate the position of the welding point of the diode 202 and the diode interconnection sheet 201 for the model through the upper computer system;

[0092] S2.3, the upper computer system sends the calculated welding position information to the PLC controller; the PLC controller controls the movement of the welding head movement mechanism, thereby controlling the welding head to reach the top of the designated welding point;

[0093] S2.4, the PLC controller controls the welding head to continue to move downward until the pressure monitor detects that the welding pressure reaches a set value, the welding head stops moving downward, and controls the welding power supply to discharge, and then the welding head welds in real time according to the preset welding pressure, welding time and welding voltage;

[0094] S2.5, optionally, during the welding process, when the welding current of the welding electrode 301 is lower than a set value, the welding is stopped, and the grinding mechanism is called to grind the electrode end surface 311 of the welding electrode 301 to enhance the welding current.

[0095] Step S3, performing performance testing on the soldered solar cell array components.

[0096] Specifically, under the conditions of a test angle of 180° and a tensile loading speed of 0.1 mm / min to 0.5 mm / min, the tensile strength of the welded solar cell array components is tested by a tensile testing machine, and the test results are uploaded to the host computer system.

[0097] Step S4, cutting the inspected solar cell array components.

[0098] S4.1, controlling the lifting out of the lower material bin tray of the designated layer in the lower material bin 103 through the upper computer system;

[0099] S4.2, the robot grabs the inspected solar cell array components and places them into the unloading bin tray, thus completing unloading.

[0100] In summary, the present invention provides a welding device and method for solar cell array components, which controls, monitors and supervises the entire welding process through a set of automated welding devices, thereby improving the positioning accuracy of solder joints, the stability of the welding process and the efficiency of the welding process; and intelligent and information-based means also protect the solar cell array components during and after welding.

[0101] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the invention. After reading the above content, it will be obvious to those skilled in the art for various modifications and substitutions of the present invention. Therefore, the protection scope of the present invention should be limited by the attached claims.

Claims

1. A welding device for a solar cell array component, used for welding a diode (202) and a diode interconnection sheet (201) to form a solar cell array component, characterized in that: The welding device comprises: A loading and unloading module (100) is used to load diodes (202) and diode interconnection sheets (201), and to unload soldered solar cell array components; A welding module (300) is arranged on one side of the loading and unloading module (100) and receives and welds the diode (202) and the diode interconnection sheet (201); A test monitoring module is connected in communication with the loading and unloading module (100) and the welding module (300) to monitor the entire welding process, collect information and interact; An automation control module, comprising a PLC controller, the automation control module being in communication connection with the loading and unloading module (100), the welding module (300) and the test monitoring module, and controlling the loading and unloading action, the welding action and the test monitoring process; The upper computer system is connected in communication with the loading and unloading module (100), the welding module (300), the testing and monitoring module, and the automation control module to control the entire welding process.

2. The welding device for solar cell array components according to claim 1, characterized in that: The loading and unloading module (100) comprises: a first loading bin (101) comprising multiple layers of first loading bin trays, each of the first loading bin trays being used to place diodes (202) of different models; A second loading bin (102) is arranged in parallel on one side of the first loading bin (101), the second loading bin (102) comprising multiple layers of second loading bin plates, each of the second loading bin plates being used to place diode interconnection sheets (201) of different models; A lower material bin (103) is arranged in parallel on a side of the second upper material bin (102) away from the first upper material bin (101), the lower material bin (103) comprising multiple layers of lower material bin trays, each of the lower material bin trays being used to place different types of the welded solar cell array components; The robot is arranged at a position directly opposite to the second loading bin (102) and is in communication connection with the PLC controller, and is used for grabbing the pre-welded diode (202) and the diode interconnection sheet (201) to the welding module (300) during loading, and for grabbing the post-welding solar cell array components to the unloading bin (103) during unloading.

3. The welding device for solar cell array components according to claim 2, characterized in that: The first loading bin (101) and the second loading bin (102) are both connected to the PLC controller, and the first loading bin tray at a specified layer in the first loading bin (101) and the second loading bin tray at a specified layer in the second loading bin (102) are automatically lifted out through control instructions of the PLC controller; The lower material bin (103) is connected to the PLC controller, and the lower material bin tray at a designated layer in the lower material bin (103) is automatically lifted out through control instructions of the PLC controller.

4. The welding device for solar cell array components according to claim 2, characterized in that: The manipulator has a built-in first CCD positioning device, which is communicatively connected to the host computer system to upload the photographed and identified information of the diode (202) and the diode interconnection sheet (201) to the host computer system.

5. The welding device for solar cell array components according to claim 2, characterized in that: The welding module (300) comprises: A welding platform is connected to the PLC controller for placing the diode (202) and the diode interconnection sheet (201) before welding, and is moved to the test monitoring module after welding is completed; A second CCD positioning device is connected to the host computer system for communication to capture the shape, size and position information of the diode (202) and the diode interconnection sheet (201), and transmits the information to the host computer system to calculate the solder joint position; A welding jig is arranged on the welding platform to transfer the diode (202) and the diode interconnection sheet (201) from the robot to the welding platform; A pre-pressing mechanism is arranged on the welding platform and is in communication connection with the PLC controller to pre-press and flatten the transferred diode (202) and the diode interconnection sheet (201); A welding head, mounted on the welding platform, the welding head comprising a welding electrode (301) for welding the diode (202) before welding and the diode interconnection sheet (201); A welding head movement mechanism, one end of which is connected to the welding head and the other end of which is connected to the PLC controller, so as to move the welding head to a designated welding point; A welding power source, one end of which is communicatively connected to the PLC controller, and the other end of which is electrically connected to the welding electrode (301) in the welding head to provide power to the welding electrode (301); A force sensor, located in the welding platform, sensing the downward pressure generated by the welding head on the diode (202) and the diode interconnection sheet (201); A pressure monitor, one end of which is electrically connected to the force sensor and the other end of which is communicatively connected to the PLC controller, is used to monitor the downward pressure generated by the welding head and generate an electrical signal to feed back to the PLC controller.

6. The welding device for solar cell array components according to claim 5, characterized in that: The welding module (300) further comprises a grinding mechanism; The grinding mechanism is arranged on the welding platform and is connected to the PLC controller to grind the welding head to strengthen the welding current passing through the welding electrode (301).

7. The welding device for solar cell array components according to claim 6, characterized in that: When the pressure monitor detects that the welding pressure of the welding head reaches the set value, an electrical signal is generated and fed back to the PLC controller, and then the PLC controller controls the welding head movement mechanism to stop moving downward, and controls the welding power supply to discharge and perform welding; When the welding current of the welding electrode (301) is lower than a set value, welding is stopped, and the grinding mechanism is called to grind the electrode end surface (311) of the welding electrode (301) to increase the welding current.

8. The solar cell array component welding device according to claim 1, characterized in that: The test monitoring module comprises: The testing system includes a tensile testing machine to detect the tensile strength of the solar array components after welding; Camera, remote monitoring of welding status; The test monitoring network module is communicatively connected with the test system, the camera and the upper computer system to collect and store the welding process and test result information.

9. The welding device for solar cell array components according to claim 6, characterized in that: The welding head movement mechanism controls the welding head to achieve a welding accuracy of ±0.1 mm during welding; the verticality of the welding head and the welding fixture reaches 90°±1°; and the grinding direction of the grinding mechanism is 90°±1° to the direction of the electrode end surface (311) of the welding electrode (301).

10. A method for welding components of a solar cell array, implemented based on the welding device for components of a solar cell array according to any one of claims 1 to 9, characterized in that: The following steps are included: Step S1, loading the diode (202) and the diode interconnection sheet (201) before welding; Step S2, performing welding point identification and high-precision welding on the diode (202) and the diode interconnection sheet (201); Step S3, performing performance testing on the soldered solar cell array components; Step S4, cutting the inspected solar cell array components; Wherein, the step S1 comprises: S1.1, controlling the lifting out of a first loading bin tray at a designated layer in the first loading bin (101) and a second loading bin tray at a designated layer in the second loading bin (102) through a host computer system; S1.2, using the robot to absorb a diode (202) of a specific type located in a first loading bin tray of the lifting layer and to grab a diode interconnection sheet (201) of a specific type located in a second loading bin tray of the lifting layer; S1.3, transferring the diode (202) and the diode interconnection sheet (201) from the robot to the welding platform by means of a welding jig; Wherein, the step S2 comprises: S2.1, pre-pressing the diode (202) and the diode interconnection sheet (201) transferred to the welding platform by a pre-pressing mechanism to ensure the flatness of the diode (202) and the diode interconnection sheet (201); S2.2, photographing the shape, size and position information of the diode (202) and the diode interconnection sheet (201) by means of the second CCD positioning device, and uploading the information to a host computer system, so that the host computer system can calculate the position of the welding point of the diode (202) and the diode interconnection sheet (201) of the model; S2.3, the upper computer system sends the calculated welding position information to the PLC controller; the PLC controller controls the movement of the welding head movement mechanism, thereby controlling the welding head to reach the top of the designated welding point; S2.4, the PLC controller controls the welding head to continue to move downward until the pressure monitor detects that the welding pressure reaches a set value, the welding head stops moving downward, and controls the welding power supply to discharge, and then the welding head welds in real time according to the preset welding pressure, welding time and welding voltage; S2.5, when the welding current of the welding electrode (301) is lower than the set value, the welding is stopped, and the grinding mechanism is called to grind the electrode end surface (311) of the welding electrode (301) to increase the welding current; Wherein, the step S4 comprises: S4.1, controlling the lifting out of the lower material bin tray at a designated layer in the lower material bin (103) by the upper computer system; S4.2, the robot grabs the inspected solar cell array components and places them into the unloading bin tray, thus completing unloading.

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