Integrated Concentrating Photovoltaic Module (CPV module)
20101115 - 20121115
Dr Enboa Wu
• I: Free Space Solution – Mass production ready concentrating photovoltaic module for On/Off grid power station applications: • Dimension ~ 2100x2100x100 mm3 • Module efficiency ~ 25.6% • Output Power of ~ 870 W • II: Guiding Optics Solution – Mass production ready portable battery charger for consumer applications, e.g. battery charger, or camping equipments charger • Dimension ~ 145x75x50 mm3 • Module efficiency ~ 19 % • Output Power of ~ 3.5 W • At least 4 patents and design documents • Market research and technical report
HALO Motor Co., Ltd. Jiangsu Guoxing Electronic Co., Ltd. JP-Oriental International Holdings Limited KONKA Group Co., Ltd Lunar Master (HK) Limited Shenzhen BER Lighting Co., Ltd T-Shine Optoelectronics Technology Co. Ltd [Sponsor] Zhejiang Crystal-optech Co., Ltd
This project aims to develop concentrating photovoltaic module technology to achieve high efficiency photovoltaic power conversions. Traditional approaches to improve the conversion efficiency is to grow multi-layered p-n junctions while each p-n junction absorbing and converting different wavelength of light into electricity. By growing more and more p-n junctions with each junctions working in different wavelength region, the conversion efficiency can be increased. Today, triple-junction solar cell (means 3 p-n junctions growing on top of each other) is commercially available while 4 junctions or above cannot be found in the market. Although theoretical calculation has indicated that more junctions will definitely increase the efficiency, growing multi-junctions solar cell (for >3 junctions) is at least technically and commercially not feasible today. To overcome this barrier, we propose to develop a new type of concentrating photovoltaic module which makes use of optics to separate different wavelength of light and focus those separated light onto different type of solar cells which are designed to absorb and convert certain range of wavelength of light into electricity. This approach can successfully avoid growing multi-junctions solar cell (>3 junctions) for converting solar energy. In stead, we use two separate single-junction solar cells and/or multi-junctions solar cell (<3 junctions) which are commercially available today in the market, each solar cell working in different wavelength region, and is suited to convert the corresponding part of solar light with highest efficiency. This approach is believed to achieve higher efficient solar energy conversion. In this project, we will develop: • CPV module by free space solution, for high power generation On/Off grid applications; • CPV module by wave-guiding optics solution, for consumer electronic and portable power supply applications We will integrate ASTRI’s IP technologies and turn it into a mass manufacturable turn-key solution. This project allows us to carry out high quality R&D and realize an advance technology for Hong Kong photovoltaic module industry. We will promote this technology and license it to local industry including PRD area.