Solar photovoltaic application temperature have any impact on the efficiency of solar photovoltaic power generation

Solar photovoltaic webex: now many families of photovoltaic power generation is very interested in, there are some families have installed photovoltaic power station, not only don't have to pay for your electricity, with no excess will purchase of electricity power, the electricity directly into your personal account. So you understand temperature have any effect on your photovoltaic power station power generation? How much electricity directly affects your earnings, below small make up a detailed interpretation for you temperature relationship with photovoltaic efficiency:

when cell absorbs light can produce electronic - Hole and positively charged holes and the negatively charged electrons can respectively in two different directions, and then generate an electric current and voltage if the electrons and holes of composite quickly, and reduce the solar energy conversion efficiency, the higher the temperature, the faster the electrons and holes in the compound, high temperature and solar panels are not good. For example, if the weather is too wet, adhesion will decline because of damp, batteries and adhesive will appear electrode layer, electrons cannot successful injection, resulting in abnormal black spots and connectors.

in addition to the hot weather, large temperature difference is also a major factor, the performance of solar panels under the hot sun, some parts of the solar panels up to 80 degrees Celsius, can fall when midnight to 15 degrees Celsius. Thinner, smaller solar cells are more likely to rupture. In the manufacturing process of solar module, the use of copper strip and bus ( Also calls the main pole and thick line) Tandem solar cells, solar module assembly. But the welding quality will affect the efficiency of the silicon solar energy components. In addition, with the thickness of the silicon wafer thinning, in solar energy components during the welding process are more likely to break.

but with the progress of technology, new technology can solve the influence of temperature on the efficiency? Scientists think that the back of the new contact ( On the back of the contact) Electrode solved this challenge, such as selective laser welding ( Ive laser welding) On the back of the contact ( On the back of the contact, BJBC) Technology. BJBC p-n junction on the back of the battery, bus lines and fine lines, refers to the intersection and battery electrodes and the knot on the back of the battery, the battery is like pure darkness in the face of the sun, can reduce the front of the bus lines and shadows, fine lines, enhance the efficiency of the conversion can also light surface passivation effect by improving the business process optimization, and the advantage of the beautiful.

selective laser welding is the connector evenly on the battery, in order to improve the stability, solar energy, reduce the mechanical damage of welded joint. Unlike conventional batteries, the current in the BJBC battery is not through the emitter, the result in coarse yarn and fine line between shadow and series resistance losses have no choice. Experiment also found that in the past, solar energy, by omitting busbar and shorten the thread length, can improve the filling coefficient of BJBC solar battery and short circuit current density, thereby helping to improve the performance of solar panels,

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