Yadda yana aiki na gida ta hanyar karamin tashar jikin mata, da kuma me kuke so ku fadada shi?

Ingantaccen karamin jiki a matsayinta solar cell

Kasance masu yawan adadin da aka yi

Don duk solar cells (kamar crystalline silicon solar cells), yadda ake yi adadin masu yawa ta zama da ci gaba a lokacin da jiki ya faru. Wannan shine saboda a lokacin da jiki ya faru, abubuwan da suka cikin semiconductors materials kamar silicon suna badalwa. A lokacin da jiki ya faru, band-gap width na wa semiconductors ya rage, wanda ya haɗa da karfin samun wasu carriers (electron-hole pairs) a kan intrinsic excitation. Amma, misali, wannan wasu carriers suna da tsarin kisa ga ƙasa, wanda ya ba da hankalin da ke kusa da adadin masu yawa da za su iya tabbatar da su zuwa electrode, wanda ya jawo ƙarshen short circuit current, open circuit voltage, da fill factor ta battery, kuma ya ƙare da yawan adadin da aka yi. Misali, crystalline silicon solar cells suna da temperature coefficient daga -0.4% /°C zuwa -0.5% /°C, wanda ya nufin cewa don kowane 1°C da jiki ya faru, yawan adadin da aka yi ta ya rage da 0.4% zuwa 0.5%.

Tsakiyar ƙarfi na rage

Jiki mai yawa tana haɗa da tsakar ƙarfi na abubuwan da suka cikin solar module. Don packaging materials, jiki mai yawa zai iya haɗa da tsakar ƙarfi, yellowing, delamination, da sauransu na packaging film (kamar EVA film). Don battery tare, jiki mai yawa zai iya haɗa da karfin samun wasu lattice defects a cikin silicon wafer, wanda tana haɗa da long-term stability da tsakiyar ƙarfi na battery.

Hukumomin inganta matsayinta solar cells a lokacin da jiki ya faru

Heat dissipation design

Passive heat dissipation

Design na structure na solar cell module yana haɗa da heat dissipation. Misali, ya zama da ya faru contact area bayan back na panel da air, amma ya sami material da kyau a thermal conductivity a kan backplane na panel, kamar metal backplane ko composite backplane da high thermal conductivity, wanda tana haɗa da heat da battery ta shiga ya faruwa zuwa environment. Kuma, packaging structure na battery component ta shiga ita ce, amma an yi amfani da packaging material da kyau a breathability don haɗa da heat dissipation.

Active heat dissipation

Amma a yi amfani da forced air cooling devices kamar fans. An fito small fans a kan solar array don haɗa da heat daga surface na battery through forced convection of air. Don large solar power plants, liquid cooling systems na iya a yi amfani, kamar amfani da water ko special coolant da take ƙarshi a pipe don haɗa da heat da battery module ta shiga. Wannan methodana na da high heat dissipation efficiency, amma costar tana da yawa, kuma ana iya a yi amfani a kan large-scale power stations ko special application scenarios da suka bukata high power generation efficiency.

Material improvement

New semiconductor material

Research and development of new semiconductor materials with better temperature characteristics to make solar cells. For example, perovskite solar cells have relatively good performance stability at high temperatures, and their temperature coefficient is lower than that of crystalline silicon cells. Although perovskite batteries still face some technical challenges, they have great potential in improving high temperature performance.

High temperature resistant packaging material

Development and use of high temperature resistant packaging materials. For example, the use of new polyolefin packaging materials instead of traditional EVA film, this material has better stability at high temperatures, can reduce the impact of aging packaging materials on battery performance.

Optical management and temperature compensation technology

Optical management

The excess heat absorbed by the battery is reduced by optical design. For example, selective absorption coatings or optical reflectors are used so that solar cells only absorb light in a specific wavelength range that can be used to generate electricity, while reflecting light in other wavelength ranges where heat is easily generated, thereby reducing the cell temperature.

Temperature compensation technique

The technology of temperature compensation is used in the circuit design of solar cell. For example, by adding a temperature sensor and compensation circuit to the circuit, the working state of the battery is adjusted in real time according to the temperature of the battery, such as changing the load resistance or applying reverse bias, to reduce the adverse impact of high temperature on the performance of the battery.