Abstract
Patent is a special type of technology document. All these special features of patent documents make them a valuable source of knowledge regarding technology development. In paper, the China Patent Abstract Database was chosen; solar energy technology patents between 1985 and 2012 were collected. Solar energy technology patents were analyzed from the patent applications, technology sub-class, and correlation analysis, respectively. The patent trends of solar energy technology were also discussed. environmental, political, and social problems linked to fossil fuel use. Alternative energy sources are broadly defined as energy sources that do not cause or limit net emissions of carbon dioxide and thus largely avoid the environmental impacts associated with the combustion of fossil fuels.(6-8) Solar energy is an important alternative energy. Solar energy production can be divided into two types: solar thermal energy and photovoltaic power production. In the former case, heat captured from the sun is used for residential heating or industrial processes or for thermal power generation. Technologies involved in solar thermal energy production include solar heat collection, heat storage, systems control, and system design technologies. In the latter case, specially adapted semiconductor devices are used to convert solar radiation into electrical current. Related technologies include solar cell design, storage battery, and power conversion technologies. (9-12) Solar energy is very important for the development of China's renewable energy industry. We should analysis of trends in technological innovation in order to design appropriate policies for the promotion of solar energy. Therefore, the objective of this paper is providing an overview of the technologies development trends of solar energy in China through patent analysis method.
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