Spectral responsivity measurement system and method for photovoltaic module

The invention provides a system and a method for measuring the spectral responsivity of a photovoltaic module, and relates to the technical field of photoelectric element testing. The system for measuring the spectral responsivity of the photovoltaic module comprises a monochromatic light generator used for providing monochromatic light to a test battery of the photovoltaic module, wherein the monochromatic light has a preset frequency and a preset wavelength; the auxiliary light generator is used for providing auxiliary light for the non-test battery unit, and the non-test battery unit and the test battery form a test series group string of the photovoltaic module; wherein the current of the non-test battery unit under the irradiation of the auxiliary light of the auxiliary light generator is greater than the current of the test battery unit under the irradiation of the monochromatic light of the monochromatic light generator; the shading assembly is used for shading battery units outside the test series str