The production of Invent’s photovoltaic

The construction of photovoltaic panels, in addition to quality components, requires knowledge, experience and high-tech equipment.
Invent, with its automated assembly line, is a technologically advanced manufacturing site.
With an annual capacity of 160 megawatts is positioned today in the forefront of Italian production scene.

Read more about the various phases and technologies needed to build a high quality PV module.

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  • 1. String preparation

    The construction of strings is the first and the most important stage in the production of a photovoltaic module.
    In Invent this step is fully automated with the aid of pneumatic arms and conveyor belts that position and connect the solar cells with the ribbon.
    The welding step is optimized thanks to overheating differentiated in the various areas of the string.

    Double camera for controlling and positioning the solar cells

    The high quality of the strings in the process is guaranteed by a special camera system that:

    – Check the integrity of the cells.
    – Place the cells properly for the assembly.

  • 2. Assembly

    The assembly line is extremely rapid and precise through the combined action of three different automations: anthropomorphic robot, cutting and loading EVA solar glass, the assembly phase of the multi-layer (glass, cells, EVA).

    The complete automation of the process ensures high productivity and a high level quality without needing for any manual intervention.

    The anthropomorphic robot is extremely performant: its function is to position the strings on the glass of the photovoltaic panel, the machining accuracy is guaranteed with a specific system of infrared centering.

  • 3. Laminating and transfers

    Lamination is a critical process for the perfect costruction of the module and for the duration of the same in time.

    The module is checked to avoid any faults before preceding electrical connections.

    The process allows, through overheating vacuum, the fusion of the different layers of the panel (glass, EVA, and back-sheet) with the silicon cells, generating a single integral body.

    The rewarding characteristic Invent production is automation, which allows to achieve high performance in the construction of the modules.

    The transfer of semi-finished product in the plant is made entirely from automated systems and cartesian robots. They accelerate the different stages of processing, avoid the risk of damages that happen often by manual handling. All automations are equipped with active safety systems to prevent accidents and ensure safety work.

  • 4. Application of the components

    The operations of mounting the frame and jounting box for electrical connections are carried out by qualified staff on semiautomatic stations that facilitate the work.

    The care and attention given by Invent in these processes, are the guarantee of its quality.

  • 5. Testing

    At the end of the assembly line, there are made tests to verify the efficiency of the photovoltaic panel:

    – Each module is tested with a solar simulator, which determines the effective power of  it.
    – Each flash-test is unique, as it is automatically associated to the serial number inside the laminate.
    – An indelible label is generated and will be sticked automatically on the back of the module.

    All testing operations are performed with automated process using Cartesian robots

  • 6. Finishing and final packaging

    In Invent the finishing of the modules is made by using a specific robot ABB that, without human intervention, engraves and packages the panels on four different platforms depending on the power certified while testing (sorting) .

    A. Labelling

    The robot applies the indelible label (generated at the time of testing) certifying the power of the module.

    B. Closure of the junction box

    The ductility of the robot is appreciated  in an apparently simple action: closure of the junction box. ( The mechanical arm is able, simultaneously, to move an entire module, where power is needed, and to close a plastic cover, where it is required particular sensitivity and precision. )

    C. Laser engraving

    The finishing station is equipped with a laser ray that allows the customized engraving of the frame of the modules. The operation, automatically managed by the robot, is set by the operator on a dedicated console commands.

    D. Cleaning and finishing

    Cleaning and aesthetic control of the modules are assigned to the responsibility of the operator who verifies the integrity and approves to package.
    In this phase, the robot waits for the confirmation of the operator to proceed to the packaging.

    E. Packaging

    When finishes are completed, the robot takes on charge the packing of the modules by sorting, splitting automatically the modules on four different platforms depending on the verified power and the reference order.
    Once the work is finished, the operator have just to pick up the packaging and send them to the shipping area.

  • 7. Exclusive services

    Special processing

    modular adaptable dimensions, different oxidation profiles, different types of aesthetic solutions and different sizes allow us to offer to our customers photovoltaic modules that can be integrated to the building’s architecture.

    Custom modules

    Thanks to a laser engraving system, Invent is able to provide its customers with lots of photovoltaic modules with customized frames.

    Custom packaging

    On request, Invent offers a customized package service with graphics and logos of the customers.