“With high conversion efficiency and without the appearance of electrodes, allowing users to have a sense of superiority is different from the surrounding” (Toshiba). Toshiba in January 2009 established the “umbrella to promote solar power generation system business department”, focused on industrial solar systems sales, starting from April 2010 to set foot in Japan, Toshiba residential solar cell systems business.
Toshiba battery will sell the residential solar energy system is characterized by the procurement and use of the United States Sun Power of the high conversion efficiency silicon solar battery module. Sun Power modules used only in the back of the electrode set up a “back contact (Back Contact)” structure increases the area affected by light, so than any other company’s products to further improve the conversion efficiency. Toshiba will be the first to the Japanese import module conversion efficiency of 16.9% of the product Note 1).
Note 1) Sun Power also prepared a module conversion efficiency of 18.5% and 19.3% of the products. Conditions are met, will import the Japanese market.
Earlier in Japan, Sanyo Electric’s “HIT (Heterojunction With Intrinsicthin-layer)” was once synonymous with high-efficiency solar cells. The company through the use of silicon-based cells in the formation of thin-film silicon layer on both sides of the structure of the module conversion efficiency increased to 17.0%. In Japan, residential solar energy systems, the Sanyo Electric’s share followed by Sharp in second place, and strive for the year 2012 the first board seat. Toshiba, Sanyo Electric will be the first head-on challenge and strive to year 2015 for residential solar systems in the Japanese market, a 20% share.
Including the solar cell modules, including junction box, power conditioner and display unit and all other products by Toshiba from the external procurement. Type single crystal silicon solar cell modules. Power Regulator with support for 4kW and 5.5kW rated output power of the two products.
Through high-efficiency to reduce system costs
Choose Sun Power because Toshiba that the company’s products with high conversion efficiency will become a major advantage. Mainly due to Japan in November 2009 launched the remainder for residential power purchase system. Want to set up a limited area, the possible need to increase generating capacity are becoming stronger.
Toshiba also taken into account in the future, once the price of solar cell modules down, set the cost price in the system will become a high percentage. The same output power, you can reduce set up an area of high efficiency modules, rack desk costs and operating costs will be reduced,PA3384U-1BAS , PA3399U-1BAS thereby reducing overall costs.
As with the Toshiba and Sanyo Electric to focus on high-efficiency silicon solar cell products manufacturers in Japan and abroad more and more. For example, the previous poly-silicon solar cells produce only the Mitsubishi Electric, will begin the second half of 2010, the annual production of high-efficiency silicon solar cells. Although the initial module conversion efficiency is only about 17%, but the Mitsubishi Electric has made it clear 18 ~ 20% of the target.
Square single crystal silicon-based unit
In March 2010 3 to 5 days of the exhibition held in Tokyo on “PV EXPO 2010″ on the emergence of a number designed to promote the use of silicon-based unit display. Many previous solar cell manufacturers goal is to catch up with the rapid expansion in the global market share of U.S. First Solar’s module manufacturing costs. However, “these companies can not catch up with the manufacturing cost First Solar. These companies have realized that only by virtue of absolute advantage of high efficiency and high output power-oriented in order to win” (a solar cell manufacturer).
China’s Suntech Power Holdings (Suntech Power Holdings) display modules use a larger surface area of silicon-based unit “Jumbo cell”. To comply with the cylindrical-shaped single crystal silicon ingot (Ingot) efficient production units, the general cell shape of the corners there are gaps. And Suntech Power Holdings has chosen the larger diameter of the ingot, but also reduce the gap corners had been cut with the unit. Although this will cut down on from the ingot scrap more, resulting in increased cost of materials for each unit, but the cell surface area can be increased 4%. This module’s output power increased by about 5.5%.
Announced the monocrystalline silicon solar battery module involved in the business of Mitsubishi Electric’s business goal map. According to the company’s information production.
Suntech Power Holdings reduces the monocrystalline silicon solar cell of the square gap, thereby increasing output power (a). To further enhance the output power, Solar Silicon Technology, and Yu Jing energy is separately developing rectangular monocrystalline silicon solar cell (b, c).
Solar Silicon Technology on display module used to further remove the four corners of the square gap in silicon-based unit. Module conversion efficiency of 15.3%, maximum output power of 250W. In addition, the unit of professional manufacturer in Taiwan Yu Jing energy (Gintech Energy) also exhibited a square of silicon-based unit. May constitute a module conversion efficiency of 18%, maximum output power exceeding 250W module.
