Device and method for automatic identification and contact power-on of outgoing line of photovoltaic module

Abstract

The invention discloses a photovoltaic module outgoing line automatic identification and contact power-on device and method.The photovoltaic module outgoing line automatic identification and contact power-on device comprises a double-shaft transfer mechanism and a control system, the double-shaft transfer mechanism is provided with a visual camera and a power injection probe row capable of ascending and descending in the Z-axis direction, and the probe row is mainly composed of double rows of cylindrical probes; the control system comprises a plurality of stroke sensors, a Plc controller, AI photographing positioning software and electric injection software, wherein the stroke sensors are installed on the double-shaft transfer mechanism. The device is installed in a cooling cavity after lamination, the layout of an assembly line is not changed, the overall beat of the assembly line is not affected, the problem of power-on failure caused by the existence of a lamination tool is effectively solved through the structure of the double-row cylindrical probes, the power-on success rate is improved to a great extent, and the power-on efficiency is greatly improved compared with positioning by independently manufacturing one piece of equipment. And the production cost is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaics, and in particular to a device and method for automatically identifying and contacting a lead-out line of a photovoltaic component for powering on. Background Art

[0002] Nowadays, the photovoltaic industry is booming, and major companies are actively developing new technologies to reduce production costs and improve component efficiency. Therefore, various new equipment and new models are emerging on the assembly line. In order to improve the yield and efficiency of components, the components can be electrically injected. By injecting current into the components, the positive electrode is enriched with positive charges and the negative electrode is enriched with negative charges, thereby forming an electric potential difference, realizing energy conversion and storing energy. During the charging process, the charge flows from the positive electrode to the negative electrode, the chemical reaction is stimulated, electrons are generated, and electrical energy is released. This method of electrical injection can improve the working ability of solar cells under low light conditions, increase their short-circuit current and efficiency, reduce temperature-related efficiency losses, and extend battery life.

[0003] Nowadays, electrical injection of components is a new direction. The currently known electrical injection solution is to add a stacking machine to the assembly line to power on the components in layers. Each layer has an independent component correction mechanism and electrodes, which can achieve precise positioning of the component leads, solve the lead positioning problem from the hardware level, and thus successfully complete the injection action.

[0004] The existing solution adds a new device to the original assembly line, which increases the length of the original assembly line. For the factory area where the equipment has been positioned, the construction difficulty of adding a new device is large, the overall workload is large, and the customer acceptance is low. In addition, the equipment is a stack structure, and the positioning function is realized through hardware, which greatly increases the overall hardware cost of the equipment. The injection time is 1-2 minutes, which slows down the overall rhythm of the assembly line.

[0005] Therefore, we propose a device and method for automatically identifying and contacting the lead wires of a photovoltaic module to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide a device and method for automatically identifying and contacting the lead wires of a photovoltaic module to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for automatically identifying and contacting the lead wires of a photovoltaic module for electrification, comprising: a dual-axis transfer mechanism and a control system, wherein the dual-axis transfer mechanism is provided with a visual camera and a row of injection probes capable of Z-axis lifting, wherein the probe row is mainly composed of a double row of cylindrical probes;

[0008] The control system includes a number of stroke sensors, a PLC controller, AI camera positioning software and electrical injection software, wherein the stroke sensor is installed on a dual-axis transfer mechanism.

[0009] Preferably, the dual-axis transfer mechanism includes two symmetrical connecting plates, on which an X-axis linear guide is provided, on which a main frame is slidably arranged, and between the two ends of the main frame and the linear guide, a driving assembly is provided, and on the upper surface of the main frame, two Y-axis linear guides are provided, on which a visual frame is slidably arranged, and on which a linear module is installed.

[0010] Preferably, a visual camera is hoisted on the visual frame, and an extension arm is also installed on the visual frame, a cylinder is hoisted at the end of the extension arm, and a probe row is installed at the telescopic end of the cylinder.

[0011] Preferably, a light source is also installed on the visual frame.

[0012] A method for automatically identifying and contacting a photovoltaic module lead wire for powering on comprises the following steps:

[0013] S1, AI camera positioning software sends a signal to PLC, PLC first controls the dual-axis transfer mechanism to move the visual camera to the approximate position of the lead-out line;

[0014] S2, the visual camera takes a picture and calls AI for coordinate recognition. If the lead-out line position is not recognized, it returns to PLC to control the dual-axis transfer mechanism and continue to drive the visual camera to move until the visual camera reads the lead-out limit coordinates;

[0015] S3. Send the precise position coordinates of the lead-out wire to PLC, start the electric injection software, the electric injection software sends a signal for injection action, the electric injection software sets the power output, and the dual-axis transfer mechanism works at the same time to make the probe row reach the specified coordinates.

[0016] S4, the cylinder drives the probe row to descend, so that the probe row contacts the lead wire and starts to inject electricity. At the same time, the electric injection software requests Mes to obtain the efficiency file parameters, and determines whether the voltage and current exceed the range each time it is collected.

[0017] S5. If it exceeds the range, the injection result is immediately judged as NG, and the result is uploaded to PLC, and the power output is stopped. If it does not exceed the range, until the acquisition time is over, the injection result is judged as OK, and the result is uploaded to PLC, and the power output is stopped.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The device is installed in the cooling chamber after lamination, which does not change the layout of the assembly line itself and does not occupy additional site area. After the components are hot-melt laminated by the laminator, they need to be cooled in the cooling chamber for 5 minutes. The injection action is carried out during the cooling process of the components, without adding other time, and does not affect the overall rhythm of the assembly line;

[0020] 2. The double-row cylindrical probe structure effectively solves the power-on failure problem caused by the existence of lamination tooling, greatly improving the power-on success rate;

[0021] 3. The use of linear guides, linear modules and visual cameras for positioning effectively reduces production costs compared to using a separate device for positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the probe row in the present invention;

[0024] Figure 3 This is a flow chart of photo positioning in the present invention;

[0025] Figure 4 This is the power injection flow chart of the present invention.

[0026] In the figure: 1. connecting plate; 2. main frame; 3. visual camera; 4. cylinder; 5. probe row; 6. visual frame; 7. linear module; 8. light source; 9. linear guide; 10. double-row cylindrical probe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-4The present invention provides a technical solution: a device and method for automatically identifying and contacting the lead-out wires of a photovoltaic module for powering on. The device is installed as a whole in the laminating equipment of the production line, specifically in the cooling chamber after lamination, and includes: a connecting plate 1, two connecting plates 1 are symmetrically provided, a linear guide rail 9 is provided on the connecting plate 1, and the linear guide rail 9 is an X-axis guide rail. A main frame 2 is slidably arranged on the two linear guide rails 9 to realize the sliding of the main frame 2 along the X-axis. A driving assembly is provided between the two ends of the main frame 2 and the linear guide rails 9 for automatic movement of the main frame 2, and a stroke sensor is provided for feeding back the stroke position of the main frame 2 to the upper system to improve the accuracy of equipment automation.

[0029] In this embodiment, the driving assembly of the main frame 2 is a linear cylinder assembly.

[0030] Two Y-axis linear guides 9 are provided on the upper surface of the main frame 2, and a visual frame 6 is slidably set on the Y-axis linear guide 9. The visual frame 6 is installed with a linear module 7. The linear module 7 drives the visual frame 6 to automatically slide along the Y-axis linear guide 9. A stroke sensor is provided on the linear guide 9 for feeding back the stroke position of the visual frame 6 to the upper system, thereby improving the accuracy of equipment automation.

[0031] The connecting plate 1, two linear guide rails 9 and the main frame 2 constitute a double-axis transfer mechanism.

[0032] A visual camera 3 is mounted on the visual frame 6, and the visual camera 3 takes a picture of the lead wire position, and determines the distance from the lead wire to the edge of the component through a software algorithm, thereby providing position information for automation.

[0033] A light source 8 is also installed on the visual frame 6 to provide lighting for the lead-out line position so that the visual camera 3 can take clearer pictures.

[0034] An extension arm is also installed on the visual frame 6, and a cylinder 4 is hoisted at the end of the extension arm. Cylinder 4 is a lifting cylinder. A probe row 5 is installed at the telescopic end of cylinder 4. Probe row 5 is mainly composed of double rows of cylindrical probes 10. Probe row 5 is pressed down to contact the lead wire to perform the electric injection action.

[0035] In summary, the two linear guide rails 9 provide precise walking guidance in the X and Y axes for the probe row 5 and the visual camera 3, respectively, so that the probe row 5 and the visual camera 3 can be moved to the lead-out line position, and the cylinder 4 is used to realize the Z-axis lifting and lowering of the probe row 5, further achieving precise contact with the lead-out line and completing the electrification action.

[0036] The injection action is divided into two processes. The first is the visual photography positioning process, which is used to lock the position of the lead-out wire. The process is as follows: use the photography software to send a signal to Plc. Plc first controls the dual-axis transfer structure to move the visual camera 3 to the approximate position of the lead-out wire. Then the visual camera 3 takes a picture and calls the AI ​​software for coordinate recognition. If the position of the lead-out wire is not recognized, it returns to Plc to control the dual-axis transfer structure and continue to drive the visual camera 3 to move until the visual camera 3 reads the lead-out limit coordinates and sends the precise position coordinates of the lead-out wire to Plc. The photography software completes a process.

[0037] Secondly, the electric injection process is used to contact and inject electricity to the lead-out wires. The process is as follows: the electric injection software is used to read the lead-out wire coordinates read by the camera software, and a signal for injection action is issued. The electric injection software sets the power output and drives the assembly and linear module 7 to work at the same time, so that the probe row 5 reaches the specified coordinates. The cylinder 4 drives the probe row 5 to descend, so that the probe row 5 contacts the lead-out wire and starts injecting electricity. At the same time, the electric injection software requests Mes to obtain the efficiency file parameters. If the request fails, the maximum voltage, minimum voltage, maximum current, minimum current, reading interval, acquisition time, and first acquisition delay are set according to the default parameters. Each time the voltage and current are collected, it is determined whether they exceed the range. If they exceed the range, the injection result is immediately judged as NG, and the result is uploaded to Plc, and the power output is stopped. If it does not exceed the range, until the acquisition time ends, the injection result is judged as OK, and the result is uploaded to Plc, and the power output is stopped to complete a round of power injection for the lead-out wires.

[0038] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for automatically identifying and contacting the lead wires of a photovoltaic module, characterized in that: The device is installed in a cooling chamber of a laminating device of a production line, and comprises: a double-axis transfer mechanism and a control system, wherein the double-axis transfer mechanism is provided with a visual camera (3) and an injection probe row (5) capable of Z-axis lifting and lowering, wherein the probe row 5 is mainly composed of double-row cylindrical probes (10); The control system includes a number of stroke sensors, a PLC controller, AI camera positioning software and electrical injection software, wherein the stroke sensor is installed on a dual-axis transfer mechanism.

2. A device for automatically identifying and contacting the photovoltaic module lead wire according to claim 1, characterized in that: The biaxial transfer mechanism comprises two symmetrical connecting plates (1), the connecting plates (1) are provided with an X-axis linear guide rail (9), a main frame (9) is slidably arranged on the linear guide rail (9), a driving assembly is arranged between the two ends of the main frame (2) and the linear guide rail (9), two Y-axis linear guide rails (9) are arranged on the upper surface of the main frame (2), a visual frame (6) is slidably arranged on the Y-axis linear guide rail (9), and a linear module (7) is installed on the visual frame (6).

3. The device for automatically identifying and contacting the photovoltaic module lead wire according to claim 2, characterized in that: The visual camera (3) is hoisted on the visual frame (6), and an extension arm is also installed on the visual frame (6). The end of the extension arm is hoisted on the cylinder (4), and the telescopic end of the cylinder (4) is installed on the probe row (5).

4. The device for automatically identifying and contacting the photovoltaic module lead wire according to claim 3 is characterized in that: A light source (8) is also installed on the visual frame (6).

5. A method for automatically identifying and powering on the lead wire image of a photovoltaic module according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: S1, AI camera positioning software sends a signal to PLC, PLC first controls the dual-axis transfer mechanism to move the visual camera (3) to the approximate position of the lead-out line; S2, the visual camera (3) takes a picture and calls AI to identify the coordinates. If the lead-out line position is not identified, the PLC is returned to control the dual-axis transfer mechanism to continue to drive the visual camera (3) to move until the visual camera (3) reads the lead-out limit coordinates; S3, the precise position coordinates of the lead-out wire are sent to the PLC, the electric injection software is started, the electric injection software sends a signal of injection action, the electric injection software sets the power output, and the dual-axis transfer mechanism works at the same time, so that the probe row (5) reaches the specified coordinates. S4, the cylinder (4) drives the probe row (5) to descend, so that the probe row (5) contacts the lead wire and starts to inject electricity. At the same time, the electric injection software requests Mes to obtain the efficiency file parameters, and determines whether the voltage and current exceed the range each time the parameters are collected. S5. If it exceeds the range, the injection result is immediately judged as NG, and the result is uploaded to PLC, and the power output is stopped. If it does not exceed the range, until the acquisition time is over, the injection result is judged as OK, and the result is uploaded to PLC, and the power output is stopped.

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