TWI479162B - Method of Life Test for Solar Module - Google Patents

Description

Solar module service life detection method

The invention relates to a method for detecting the service life of a solar module, in particular to comparing the output power of the whole solar module and a part of the solar panel to detect the service life of the solar module.

Solar panels with clean energy functions have always been the focus of the industry, especially with the continuous advancement of production technology, which has been widely used in power generation modules, and also paralleled to existing transmission lines, providing general electricity stations. need. Moreover, since the solar panel itself is made of glass material, it can be directly used as a building material for building appearance, such as building-integrated photovoltaic (BIPV), which has been applied to fields such as windows and curtain walls. .

Generally, a plurality of solar panels are formed to constitute a large-scale solar module, for example, to increase the power generation current in parallel and/or to increase the power generation voltage in series, thereby achieving the required power requirements, and a large amount of solar energy and low land cost. Location to achieve a better economic scale. Often, locations where solar modules are placed are mostly remote, hazardous areas such as deserts, seas or mountains. Therefore, how to detect the service life of a solar module at any time and need to be replaced or repaired has always been a labor-intensive and time-consuming work in the industry.

In the prior art, the output power of the entire solar module is usually measured to determine whether the service life of the solar module is reached. Therefore, an additional power measuring device is needed and replaced when the service life is reached. However, the power drop of the solar module may be caused by the failure or damage of a small number of solar panels or connecting lines, that is, most of the solar panels can still operate normally and generate electricity, so it is very uneconomical to replace the entire solar module at a time. However, the conventional techniques to find out are those Damage to the solar panels or that part of the line is a time consuming and labor intensive task. Therefore, there is a need for a solar module life detecting method, which can greatly save manpower and detection time, and achieve the function of remote detection, thereby solving the problems of the above-mentioned conventional technology.

The main purpose of the present invention is to provide a solar module life detecting method, which mainly includes: selecting a target group from a plurality of solar panels, and the target group includes a plurality of solar panels; Measure the electrical characteristics of the target group and the solar module; and test the current service life of the solar module according to the preset life detection principle. In particular, the method of the present invention can further generate a warning signal when the solar module reaches the service life, and display the generated warning signal by the indicating device.

The above warning signal can be displayed by using a display device, such as a light-emitting diode light bar, to inform the operator that the solar module must be replaced, or to further check whether the component is faulty, for example, some solar panels are covered by dust and must be cleaned. , or part of the electrical circuit is short-circuited or disconnected due to foreign matter of conductive dust or suspended particles.

Therefore, the method of the present invention can effectively detect and instantly know the current service life of the solar module, thereby achieving the function of remote detection, which can greatly save manpower and detection time.

The embodiments of the present invention will be described in more detail below with reference to the drawings and the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

Referring to the first figure, a schematic diagram of the operation flow of the solar module life detecting method of the present invention. As shown in the first figure, the method for detecting the life of the solar module of the present invention includes multiple steps in sequence, that is, selecting the target group S10, measuring and comparing the electrical characteristics S20, and detecting the current service life S30, Automatic detection of solar modules The service life of the group, wherein the solar module is composed of a plurality of solar panels.

First, the present invention begins with step S10, selecting a target group including a plurality of solar panels in the solar module, that is, the number of solar panels included in the target group is less than the number of all solar panels in the solar module, such as Among the solar modules including 100 solar panels, three solar panels were selected as the target group. Then, proceeding to step S20, measuring electrical characteristics of the target group and the solar module, such as output power, voltage, current, and at least one of the target group and the resistance of the solar module itself. Finally, in step S30, according to the preset service life detection principle, the electrical characteristics of the target group and the solar module measured in step S20 are used to detect the current service life of the solar module.

For convenience of explanation, the following uses the output voltage as the desired electrical characteristic.

Specifically, the life detecting principle in step S30 includes steps 31, S33, and S35. In step 31, first check whether the electrical characteristics of the target group meet the preset range, for example, the normal output voltage of each solar panel is 10V, and the target group of three solar panels has a normal output voltage of 30V. Therefore, the target group The preset range of the group can be set to, for example, 30V±3V, so if the output voltage of the target group is measured to be 20V, it means that the output voltage of the target group itself is abnormal. The possible reason is that some solar panels are damaged and cannot be output. Available voltages, such as strong winds or foreign objects, or short-circuits or open circuits on the solar panel's electrical connections affect the output voltage. Therefore, such a target group cannot be used as a basis for detecting the service life of the service life detection, and another target group capable of generating a normal output voltage must be selected.

If the electrical characteristics of the target group are within the preset range, proceed to step S33 to determine whether the output voltage of the solar module and the target group meets the preset output range, or compare the solar module with the target group. Whether the ratio of electrical characteristics meets the preset ratio range is used to determine and detect whether the service life of the solar module has been reached. For example, the output voltage ratio can be used as specific comparison data, where the package The normal output voltage range of a solar module with 100 solar panels is 100V, and if the current output voltage of the solar module is 93V, that is, the above output voltage ratio is 93V/30V=3.1, and if the preset ratio range is For 90V/30V to 110V/30V, that is, 3.0 to 3.67, since the current output voltage ratio 3.1 falls within the preset ratio range, it can be said that the solar module has not reached the preset service life. The group still works normally. However, if the current output voltage of the solar module is 83V, that is, the output voltage ratio is 83V/30V=2.77, which falls outside the preset ratio range, it indicates that the solar module has reached the preset service life. It is unable to output normal available power, or the solar module has been partially damaged or malfunctioned.

Then, in step S35, a warning signal is generated according to the determination result of step S33, that is, the warning signal is used to indicate that the solar module has reached the preset service life, and can be used to notify the operator to replace part of the solar module, or to perform more Detailed inspections are performed to find out the exact cause, such as whether some of the solar panels are covered by dust and must be cleaned, or whether some of the electrical circuits are short-circuited or disconnected due to foreign matter of conductive dust or aerosols.

The above described method of the present invention can be implemented using electronic devices in conjunction with appropriate software or firmware operations, such as electronic devices such as microprocessors or computers.

In addition, the warning signal can be displayed by using a pointing device, such as a light-emitting diode light bar, to facilitate notification to the operator. The warning signal can further utilize the wireless transmitting module to receive the warning signal, and further wirelessly transmit to the remote receiving device, such as the central control host, so that the worker can learn the solar mode without going to the solar module placement site. The current service life of the group, in turn, reaches the function of remote detection.

In summary, the method of the present invention is characterized in that the function of detecting the service life of the solar module by remote automatic detection can be achieved, thereby saving a lot of man-hours and reducing the labor time. The overall operating costs, especially when the solar modules are placed in remote areas, in harsh terrain or in weather conditions, are not suitable for on-site inspections by staff, such as deserts, seas, mountains, and steep slopes.

Another feature of the method of the present invention is that it does not directly utilize the absolute electrical characteristics of the overall module and the target group, but utilizes the comparative characteristics between its electrical characteristics, that is, when the sunlight becomes stronger or weaker in a normal state. At the same time, the output voltage of the whole module and the target group will also become larger or smaller at the same time, so that the ratio between them remains unchanged, and only when some solar panels cannot output voltage properly, or are destroyed, the fault affects the output. When the voltage is applied, it is determined that the solar module has reached the end of its service life or an abnormality, so that it can be protected from external sunlight and can avoid detection errors.

A further feature of the method of the present invention is that it can be applied to anti-theft security, such as a window, a door panel, and a curtain wall provided with a solar module, and the solar module can be artificially damaged or accidentally hit by a foreign object by using the method of the present invention. The warning signal generated when the rupture is immediately notified to the relevant personnel, such as the guards or security personnel of the building or community, to carry out the necessary anti-theft protection measures.

The above is only a preferred embodiment for explaining the present invention, and is not intended to limit the present invention in any way, and any modifications or alterations to the present invention made in the spirit of the same invention. All should still be included in the scope of the intention of the present invention.

S10‧‧‧Select target group

S20‧‧‧Measurement electrical characteristics

S30‧‧‧Test current service life

S31‧‧‧View the electrical characteristics of the target group

S33‧‧‧ Judging electrical characteristics

S35‧‧‧ generates warning signals

The first figure shows a schematic diagram of the operation of the solar module life detecting method of the present invention.

S10‧‧‧Select target group

S20‧‧‧Measurement electrical characteristics

S30‧‧‧Test current service life

S31‧‧‧View the electrical characteristics of the target group

S33‧‧‧ Judging electrical characteristics

S35‧‧‧ generates warning signals

Claims (6)

A solar module service life detecting method is used for detecting the service life of a solar module, and the solar module is composed of a plurality of solar panels, and the solar module life detecting method comprises the following steps: Selecting a target group including a plurality of solar panels, and the number of solar panels included in the target group is less than the number of all solar panels in the solar module; respectively, the target group and the solar energy The electrical characteristics of the module; and the measured lifetime characteristics of the target group and the solar module according to a preset life detection principle, thereby detecting the current service life of the solar module. The solar module service life detecting method according to claim 1, wherein the electrical characteristic comprises at least one of output power, voltage, current, and resistance of the target group and the solar module itself. According to the solar module service life detecting method of claim 1, wherein the life detecting principle includes: checking whether the electrical characteristics of the target group meet a predetermined range; if the electrical characteristics of the target group If the preset range is not met, selecting another target group that can generate electrical characteristics that meet the preset range, and if the electrical characteristics of the target group meet the preset range, determining the solar module and the Whether the electrical characteristics of the target group meet the preset output range, or whether the ratio of the electrical characteristics of the solar module and the target group meets a preset ratio range; and the electrical characteristics of the solar module do not conform to the pre-predetermined range When the output range is set, it is judged that the service life of the solar module has been reached, and a warning signal is generated. According to the solar module service life detecting method described in claim 3, the comparing and determining the electrical characteristics of the solar module and the target group utilizes the electrical characteristics of the solar module and the target group The ratio between the presets and the preset output range is a preset ratio range between the solar module and the electrical characteristics of the target group. The solar module service life detecting method according to claim 3, further comprising a pointing device for receiving and displaying the warning signal, and the indicating device is a light emitting diode light bar. The method for detecting the life of a solar module according to claim 3, further comprising a wireless transmitting module for receiving the warning signal and transmitting the signal to a remote receiving device in a wireless manner.