BC cell is called full back electrode contact crystalline silicon photovoltaic cell. In addition to HPBC, it also includes HBC, TBC and other technical branches. At present, many companies are making BC batteries, mainly to solve the existing optical problems. I think the metal shading on the front can be completely eliminated, thus improving the efficiency of solar cells. At present, mainstream PV manufacturers have a positive attitude towards BC battery technology and layout from different directions.
In this context, BC battery, as a new photovoltaic cell technology, has attracted the attention of the industry. Due to the high tolerance of distributed photovoltaic power plants to the component price, BC battery components may gain higher premium capacity in the middle and high-end distributed household and industrial and commercial markets, especially in the middle and high-end western markets, because of their high efficiency, beauty, safety and reliability.
Advantages of bc battery
First of all, its conversion efficiency is extremely high. Because the PN junction and the metal contact are on the back, the light can directly irradiate the core of the battery, which greatly improves the light conversion efficiency. Experiments show that the conversion efficiency of BC battery is more than 10% higher than that of traditional solar cells. Secondly, the effective power generation area of BC battery is larger. Because there is no metal electrode on the front, more light can irradiate the surface of the battery, thus generating more electric energy.
This not only improves the power generation of the battery, but also makes the power generation efficiency per unit area higher. In addition, BC battery reduces light loss. Because light no longer needs to pass through the metal electrode to reach the core, the light loss inside the battery is minimized, which is especially obvious in the case of weak light, so that BC battery can maintain high power generation efficiency under the condition of weak light.