Shandong Defu supply concentrator solar cells with a plate cooler to cool down! Temperature is one of the important factors affecting the photoelectric conversion efficiency of solar cells in the design concentrating solar photovoltaic systems, it is necessary to consider the temperature control of the battery components. Photoelectric conversion efficiency of the solar cooling of the necessity of general commercial solar cell is 6% to 15%, in the course of operation, the sun's radiant energy in addition to unused part of most of the rest is absorbed into a battery heat reflective outside; if The absorption of heat can not be ruled out, the battery temperature will gradually rise, power efficiency is reduced (according to statistics the battery pack temperature is lower 1K output power increased by 0.2% to 0.5%), but also because of long-term solar cell aging rapidly at high temperatures and shorten life. 2.1 solar cells commonly used cooling air cooling method in the back of the solar cell by natural or forced convection air heat away, you can achieve cooling purposes. When using natural convection cooling of the copper, aluminum, high thermal conductivity material as the battery back and install the fins can enhance natural convection. Using forced convection heat transfer, the back component is made through romantic road, runner inlet (or both at the entrance) to set the fan to enhance air flow, but the use of extra fans consume part of the electricity. Typically, the use of air-cooled heat exchanger performance and air flow rate and the flow path length height and so on, these parameters can be optimized to achieve the best effect of heat transfer. Araki et experimental study of natural convection cooling of the condenser under conditions of sunlight 500 times the individual solar cells, the findings suggest that a good thermal contact between the battery and the aluminum is a key factor in maintaining the battery low temperatures. 2.2 Cooling Water Cooling water can be divided into natural circulation cooling and forced circulation cooling; water cooling system design is critical to ensure good thermal conductivity and electrical insulation between the solar cell and the heat exchanger surface. A typical system consists of a water-cooled heat exchangers, tanks, valves and other components connected to several heat exchanger tube plate structure usually, runner type and tank base type and so on. Tube plate structure is referring to the traditional flat solar collector panels evolved, can well solve insulated refrigerant leakage and battery; flow channel structure is similar with the air flow channel heat, heat the working fluid in contact with the battery a large area of ??high heat transfer effect, but there is refrigerant leakage and battery insulation and other issues; tank base type directly bonded to the solar cell has a slant tank, water tank as the working fluid container and chassis systems. The company reported a SolarSystems applied to parabolic concentrating photovoltaic system water cooling system, the back of the battery set up parallel narrow channel of water, the test results showed that at 340 times the condenser conditions, when the water flow is 0.56kg / (m2 · s) and the pump power of 86W, the average temperature of the solar cell is 38.52 ℃, battery efficiency of 24.0%; overall energy efficiency of the cooling water can be sufficiently if the heat, the system can exceed 70%. Table 1 lists the comparison of some researchers about the air and water at the time of natural or forced convection cooling system thermal resistance. Defu only plate heat exchanger, has 10 years of experience in R & D, quality assurance and timely sale.