1, Yike. Ecotech belongs to Dongguan Ecotech Solar Technology Co., Ltd., and its business scope includes the production of solar panels, controllers, inverters, photovoltaic power generation systems, photovoltaic cables, connectors and solar-related application products.
2. Yingli. Yingli Energy (China) Co., Ltd., a subsidiary of Yingli Green Energy Holdings Co., Ltd., is the world's leading solar energy brand, the first China enterprise to sponsor the 20 10 South Africa and 20 14 Brazil Football World Cup, and one of the largest manufacturers of vertically integrated photovoltaic power generation products in the world.
3. Longji. Xi Anlong Silicon Materials Co., Ltd., a listed company, focuses on the research, development, production and sales of monocrystalline silicon rods and wafers, and is a large domestic manufacturer of monocrystalline silicon products.
4. Photosynthetic silicon energy. Photosynthetic silicon energy brand is an enterprise specializing in the production of wind and solar battery components and high-tech products, with first-class professional technical team and advanced production testing equipment. The company introduced the most advanced professional production equipment, and through perfect production technology and strict quality control system, the products have the characteristics of high efficiency and long life.
5. Self-propelled. Since its establishment, Hanghang has been focusing on the application of new energy, product innovation and brand positioning of "environmental protection, energy saving and safety". Shuzhai is an enterprise that sells and develops high-tech products such as photovoltaic modules, batteries and led scenery, with first-class professional technical team and advanced testing equipment.
6. Hikade. Xuzhou haikade energy co., ltd is located in the east of leye county road, the science and technology innovation valley of Xuzhou economic development zone, the second phase of u valley in Li Andong. Its business scope includes the development, production and sales of energy equipment, power generation equipment, photovoltaic products, energy-saving products and inverters. Software development and sales; Battery assembly and sales; Self-management and agency of import and export business of various commodities and technologies.
7. sparks. Focus on the research and development and design of solar energy application products such as solar street lamps. 16 years, we are committed to power supply solutions, and passed the UV/CE/ISO/ROSH certification. The main products are solar panels and photovoltaic power generation systems.
8. Taihengli. In 2007, Xiamen Taihengli Solar Technology Co., Ltd. is a new energy enterprise integrating R&D, production and sales, focusing on providing one-stop solutions for solar photovoltaic products, wind power generation products and solar application products for off-grid areas around the world.
9. You can create technology. Is an international high-tech enterprise specializing in the production, sales and service of R&D and energy storage related products. It is a world-class provider of integrated solutions for energy storage products and systems, microgrid, smart energy and energy Internet, and has more than 20 years of technical R&D and manufacturing experience in the new energy power electronics industry.
10, Trina Solar. Trina Solar's main businesses include photovoltaic products, photovoltaic systems and smart energy. The company's main products are photovoltaic modules, system products, photovoltaic power stations, intelligent microgrids and multi-energy systems. Focus on the research and development and design of solar energy application products such as solar street lamps. The main products are solar panels and photovoltaic power generation systems.
Working principle of solar panels
Photovoltaic cells are also called solar cells. It is a semiconductor device that converts sunlight into direct current by photoelectric effect. In fact, all solar cells are photodiodes made of semiconductor materials such as silicon. Photons in sunlight hit solar cells and are absorbed by semiconductor materials.
Electrons with negative charges are separated from their atoms and begin to flow in the same direction, producing current. A typical silicon solar cell can generate a voltage as high as 0.5V and a current as high as 6A. So its maximum power is 3W. Because the output of a single solar cell is very small, a large number of solar cells are interconnected to form a solar cell module.
The combination of solar cell modules is called panel, and the combination of panel is called solar cell array. This is done to obtain the required power output from the photovoltaic system. When solar cells are connected in series, their voltage increases as much as the number of series cells. But the current remains constant.
When the batteries are connected in parallel, the voltage remains the same as that of the batteries, but the current is multiplied. Only when their voltages are the same can batteries, modules or panels be connected in parallel.