A zoned temperature-controlled photovoltaic module shingled platform and its working method

Abstract

The present invention discloses a zoned temperature-controlled photovoltaic module shingling platform and a working method thereof, which belong to the field of photovoltaic power generation technology. The work surface is driven by a ball screw system and a servo motor, which realizes high-precision stepping control, improves consistency, and further improves the shingling accuracy of the photovoltaic module, and can achieve a narrower overlapping width of the shingles, so that the manufactured photovoltaic modules can have a higher power generation area utilization rate. The work surface is divided into a number of independent area units, and the negative pressure adsorption ports on the area units can adsorb the battery cells, so that the battery cells are stable during stacking, improve the flatness and quality of the stacking, and reduce the breakage rate. The heating device and temperature sensor on the area unit can be preheated in conjunction with the preset temperature rise preheating program in the control system, and cooperate with the subsequent drying process to make the shingled conductive adhesive more scientifically and reasonably cured and shaped, and each area unit can be independently controlled, which reduces production costs and improves production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a zoned temperature-controlled photovoltaic component shingled platform and a working method thereof. Background Art

[0002] Photovoltaic modules are the core part of the solar power generation system. At present, photovoltaic modules have a relatively mature production line, including several process units. Through the cooperation of each unit, the pre-cut cells are loaded, sorted, glued, stacked, and dried to form a cell stacking array, realizing fully automated production. The stacking process is carried out on the stacking platform. The quality of the stacking is related to the operating performance and safety of the entire photovoltaic module and even the entire solar power generation system. The current photovoltaic module manufacturing system mainly has the following problems:

[0003] 1. At present, the shingle platforms of common shingled photovoltaic module production equipment mostly adopt synchronous belt form, which has the disadvantages of insufficient step control accuracy and insufficient flatness;

[0004] 2. The conductive adhesive of the laminated shingles cannot be cured and shaped before drying, which will affect the flatness of the entire shingles during transportation;

[0005] 3. The tiles are heated and dried only after entering the drying device, resulting in low production efficiency. Summary of the invention

[0006] In order to solve the above problems, the purpose of the present invention is to provide a zoned temperature-controlled photovoltaic module shingling platform and a working method thereof, which has a high degree of automation and high step control accuracy, and can preheat the shingles in zones while shingling, and cooperate with the subsequent drying process to make the shingled conductive adhesive undergo more scientific and reasonable curing and shaping, thereby reducing production costs and improving production efficiency.

[0007] The present invention is achieved through the following technical solutions:

[0008] The invention discloses a zoned temperature-controlled photovoltaic assembly shingle platform, comprising a support, a work surface and a control system; the work surface is connected to the support through a ball screw system, the ball screw system is connected to a servo motor, and the servo motor is connected to the control system;

[0009] The work surface is divided into several area units, each of which is provided with several heating devices, several negative pressure adsorption ports and temperature sensors; the negative pressure adsorption ports are connected with negative pressure generating devices; the heating devices, negative pressure adsorption ports and temperature sensors are respectively connected with the control system.

[0010] Preferably, the work surface is evenly divided into a plurality of area units in the traveling direction of the shingles.

[0011] Preferably, the heating device is a heating resistor.

[0012] Preferably, the control system is a PLC.

[0013] Preferably, the flatness of the work surface is ≤3 / 1000mm.

[0014] Preferably, each area unit of the work surface is provided with a heat-conducting groove to avoid local heat accumulation.

[0015] The present invention discloses a working method of the above-mentioned zoned temperature-controlled photovoltaic assembly shingling platform, comprising:

[0016] The pre-cut cells are stacked on the work surface, and the control system opens the negative pressure adsorption port in the corresponding area to adsorb and fix the cells. In the area where the stacked cells are located, the control system turns on the heating device in that area and preheats them according to the temperature control program. The control system monitors the temperature of each area unit on the work surface through the temperature sensor and adopts the corresponding temperature control strategy. The control system controls the servo motor to drive the ball screw system to make the work surface linearly step a corresponding distance to complete the stacking process of the entire photovoltaic module.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] The present invention discloses a zoned temperature-controlled photovoltaic module shingling platform, in which the work surface is driven by a ball screw system and a servo motor, achieving high-precision stepping control, improving consistency, and further improving the shingling accuracy of the photovoltaic module, and being able to achieve a narrower overlapping width of the shingles, so that the manufactured photovoltaic modules can have a higher power generation area utilization rate. The work surface is divided into a number of independent area units, and the negative pressure adsorption ports on the area units can adsorb the battery cells, so that the battery cells are stable during stacking, improving the flatness and quality of the stacking, and reducing the breakage rate. The heating device and temperature sensor on the area unit can be preheated in conjunction with the preset temperature rise preheating program in the control system, and in conjunction with the subsequent drying process, the shingling conductive adhesive can be more scientifically and reasonably cured and shaped, and each area unit can be independently controlled, reducing production costs and improving production efficiency.

[0019] Furthermore, the work surface is evenly divided into a number of area units in the traveling direction of the shingles, and can be controlled in different areas according to the sequence of the shingles, with a high degree of automation.

[0020] Furthermore, the heating device uses a heating resistor with a wide heating temperature range, which can adapt to different temperature rise preheating strategies; the heating is uniform, and there will be no local overheating phenomenon that damages the battery cell; and the thermal efficiency is high, with less pollution to the environment.

[0021] Furthermore, the control system adopts PLC, which has high reliability, simple program setting, fast operation speed and complete functions.

[0022] Furthermore, the flatness of the work surface is ≤3 / 1000mm, which can improve the flatness of the shingles and thus improve the overall quality of the photovoltaic modules.

[0023] Furthermore, each area unit of the work surface is provided with a heat conduction groove to avoid local heat accumulation, which can evenly guide the heat to various parts of the shingles to avoid damage to the battery cells caused by local heat accumulation.

[0024] The working method of the above-mentioned zoned temperature-controlled photovoltaic module shingling platform disclosed in the present invention has a high degree of automation and high step control accuracy. It can preheat the shingles in zones while shingling, and cooperate with the subsequent drying process to make the shingled conductive adhesive undergo more scientific and reasonable curing and shaping, thereby reducing production costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the shingled platform of the zoned temperature-controlled photovoltaic assembly of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the working table of the zoned temperature-controlled photovoltaic module shingled platform of the present invention.

[0027] In the figure: 1 is a support, 2 is a ball screw system, 3 is a work surface, 3-1 is a heating device, 3-2 is a negative pressure adsorption port, and 3-3 is a temperature sensor. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

[0029] Figure 1 It is a schematic diagram of the overall structure of the zoned temperature-controlled photovoltaic module shingled platform of the present invention, including a support 1, a work surface 3 and a control system; the support 1 is a full metal thickened design with a stable structure; the work surface 3 is connected to the support 1 through a ball screw system 2, and the ball screw system 2 is connected to a high-precision servo motor, and the servo motor is connected to the control system; the control system can adopt a PLC with functions such as threshold comparison, control and numerical analysis.

[0030] The work surface 3 is divided into several area units, which are evenly divided into several area units in the direction of travel of the shingles, i.e., the length direction. Each area unit is provided with several heating devices 3-1, several negative pressure adsorption ports 3-2, and temperature sensors 3-3; preferably, the heating device 3-1 adopts a heating resistor. The negative pressure adsorption port 3-2 is connected to a negative pressure generating device; the heating device 3-1, the negative pressure adsorption port 3-2, and the temperature sensor 3-3 are respectively connected to the control system.

[0031] The worktable 3 is finely processed by a large gantry milling machine and has extremely high flatness, with a flatness of ≤3 / 1000mm, which can greatly reduce the risk of fragments of the laminated semi-finished products and reduce working hours and costs.

[0032] Each area unit of the work surface 3 is provided with a heat conduction groove, which diffuses around the heating device 3-1, so that the heat can be evenly distributed in each area of ​​the entire work surface 3, avoiding local heat accumulation and dead corners where heat cannot reach.

[0033] When the zoned temperature-controlled photovoltaic module shingled platform of the present invention is in operation:

[0034] The pre-cut cells are stacked on the work surface 3, and the control system opens the negative pressure adsorption port 3-2 in the corresponding area to adsorb and fix the cells; in the area where the stacked cells are located, the control system turns on the heating device 3-1 in the area and preheats according to the temperature control program; the control system monitors the temperature of each area unit on the work surface 3 through the temperature sensor 3-3, and adopts corresponding temperature control strategies; the control system controls the servo motor to drive the ball screw system 2 so that the work surface 3 can accurately step the corresponding distance to complete the stacking process of the entire photovoltaic module.

[0035] The partitioned temperature-controlled photovoltaic module shingled platform of the present invention has high step control accuracy, high flatness, and can be scientifically preheated. It can be well applied to "full series-parallel photovoltaic modules": the cut battery silicon wafers are arranged into a single row of a specific length according to the specifications of different photovoltaic modules. Each battery cell overlaps with the next one in front and back with a fixed width to form a series circuit, and the battery cells are aligned in the horizontal direction, thereby making a "longitudinal shingled battery unit". After the production of multiple "longitudinal shingled battery units", they are arranged in the corresponding positions of the components to be produced, and laminated and packaged to achieve the lateral overlap of the "full series-parallel photovoltaic modules".

[0036] The zoned temperature-controlled photovoltaic module shingling platform of the present invention is located in a photovoltaic module production line, specifically, generally located after a gluing section and before a drying section.

[0037] It should be noted that what is described in the embodiment is only a preferred implementation of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A zoned temperature-controlled photovoltaic module shingle platform, It is characterized in that It comprises a support (1), a work surface (3) and a control system; the work surface (3) is connected to the support (1) via a ball screw system (2), the ball screw system (2) is connected to a servo motor, and the servo motor is connected to the control system; The work surface (3) is divided into a plurality of area units, each of which is provided with a plurality of heating devices (3-1), a plurality of negative pressure adsorption ports (3-2) and a temperature sensor (3-3); the negative pressure adsorption port (3-2) is connected to a negative pressure generating device; the heating device (3-1), the negative pressure adsorption port (3-2) and the temperature sensor (3-3) are respectively connected to a control system; The work surface (3) is evenly divided into a plurality of area units in the direction of movement of the shingles; Each area unit of the work surface (3) is provided with a heat conduction groove to avoid local heat accumulation; The heating device (3-1) is a heating resistor.

2. The zoned temperature-controlled photovoltaic module shingled platform according to claim 1, It is characterized in that The control system is PLC.

3. The zoned temperature-controlled photovoltaic module shingled platform according to claim 1, It is characterized in that The flatness of the work surface (3) is ≤3 / 1000mm.

4. The working method of the zoned temperature-controlled photovoltaic module shingled platform according to any one of claims 1 to 3, It is characterized in that include: The pre-cut solar cells are stacked on the work surface (3), and the control system opens the negative pressure adsorption port (3-2) of the corresponding area to adsorb and fix the solar cells; in the area where the stacked solar cells are located, the control system opens the heating device (3-1) of the area to preheat according to the temperature control program; the control system monitors the temperature of each area unit on the work surface (3) through the temperature sensor (3-3) and adopts a corresponding temperature control strategy; the control system controls the servo motor to drive the ball screw system (2) so that the work surface (3) linearly steps a corresponding distance, thereby completing the stacking process of the entire photovoltaic module.

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