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Maximum power Pmax of solar panels for houses open circuit voltage x short-circuit current, which is their ideal power, while the usual measure of solar cells is the rated power of Pm. The actual rated power is less than the maximum power, mainly due to the output efficiency of the solar panels for houses is only about 70%.In use, the power of the different time is also different, according to the experimental data, the actual average power P=0.7Pm.If the solar panels for houses to drive the load directly, and to make the load of long-term stability, the load of the rated power of Pr=0.7Pm. If the power of the solar cell is selected according to the load, the power of the solar cell is as follows: Pm=1.43Pr. That means the power of the solar cell is 1.43 times that of the load. In selecting the power of solar panels for houses, the power consumption of the load should be reasonably selected, so that the power and the power consumption can be in a state of equilibrium. And of course, the power of the solar cell is also restricted by many factors, such as the seasons, climate, geographical environment and illumination time.
The use of batteries (here only for example in summer, the use of The use of batteries (here only for example in summer, the use of The use of batteries (here only for example in summer, the use of solar cells and batteries in general) is a kind of storage battery, which is often used as a "energy base" for other circuits ". Because of the limited power generated by solar cells, it is possible to expand the storage capacity of the base, but it can not be infinite, because the solar cell can only generate electricity in the daytime, and the solar energy output current is equal to the output current and the product of the effective illumination time, i.e., C=IH (Ah). And the capacity of the battery to make the product of the discharge time and discharge current, so the formula is: C=IH (unit Ah, is rated 1A current discharge for an hour). Then how can the solar cells and batteries make the calculation of the capacity and the electric quantity? We can pass the power formula: P=IU evolves to: P=Iuh/h=CU/h. and batteries in general) is a kind of storage battery, which is often used as a "energy base" for other circuits ". Because of the limited power generated by solar cells, it is possible to expand the storage capacity of the base, but it can not be infinite, because the solar cell can only generate electricity in the daytime, and the solar energy output current is equal to the output current and the product of the effective illumination time, i.e., C=IH (Ah). And the capacity of the battery to make the product of the discharge time and discharge current, so the formula is: C=IH (unit Ah, is rated 1A current discharge for an hour). Then how can the solar cells and batteries make the calculation of the capacity and the electric quantity? We can pass the power formula: P=IU evolves to: P=Iuh/h=CU/h. and batteries in general) is a kind of storage battery, which is often used as a "energy base" for other circuits ". Because of the limited power generated by solar cells, it is possible to expand the storage capacity of the base, but it can not be infinite, because the solar panels for houses can only generate electricity in the daytime, and the solar energy output current is equal to the output current and the product of the effective illumination time, i.e., C=IH (Ah). And the capacity of the battery to make the product of the discharge time and discharge current, so the formula is: C=IH (unit Ah, is rated 1A current discharge for an hour). Then how can the solar cells and batteries make the calculation of the capacity and the electric quantity? We can pass the power formula: P=IU evolves to: P=Iuh/h=CU/h.