Accumulator charging control method for solar battery

Abstract

The present invention relates to a solar storage battery charging control method. The method comprises the following steps: S1. starting a storage battery to enter the even charging state and putting into a solar battery matrix; S2. determining whether the bus pressure of a solar controller is more than the even charging upper limit or not, if yes, cutting one circuit of the solar battery matrix and implementing the step S3; otherwise, keeping the solar battery matrix and repeating the step S2; S3. determining whether the solar battery matrix is cut off or not, if yes, entering the floating charge state; otherwise, implementing the step S4; S4. determining whether the bus pressure of the solar controller is less than the even charging medium value or not, if yes, putting into one circuit of solar battery matrix and implementing the step S2; otherwise, directly implementing the step S2. The solar storage battery charging control method for various storage batteries can keep the stability of charging current, improve the utilization rate of solar energy and avoid overcharging or overcurrent and other situations.

Description

technical field [0001] The present invention relates to a solar cell, and more specifically, to a battery charging control method for a solar cell Background technique [0002] With the continuous development of human beings, energy consumption is increasing, and the whole society has turned more attention to the development of new energy sources. Solar cells are one of the current development hotspots. Since solar cells can only provide electric energy under the condition of light, and there are defects such as small light-receiving area of ​​the photoelectric conversion plate, low photoelectric conversion efficiency, and often unstable light intensity, it is usually a large number of solar cell square arrays to charge the battery. , and then the battery supplies power to the load. Therefore, it is particularly important for the solar battery system to adopt a better method to control the charging of the battery by the solar battery. [0003] The battery charging control...

AI Technical Summary

Problems solved by technology

In this way, when the busbar voltage is greater than the upper limit of equal charge / float charge, simply cut off all the solar battery arrays, so that the battery is not really saturated, resulting in a decline in solar energy utilization

In addition, because the switching of the solar cell array may take time, and under the influence of the input current of the single-channel solar cell array and the change of the battery capacity, it is easy to overcharge or the charging current is too large during the charging process, which will cause damage battery life

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