Control device capable of improving solar energy charging efficiency and control method thereof

Abstract

The invention discloses a control device capable of improving solar energy charging efficiency and a control method thereof. The control device comprises a solar panel, a storage battery, a diode relay and a control circuit of the relay, wherein a diode is connected in a charging loop of the solar panel and the storage battery; the relay is connected with the diode in parallel; the control circuit is connected in the charging loop of the solar panel and the storage battery; and the output of the control circuit is connected to the coil input end of the relay. The control method is as follows:the control circuit detects a current signal in the charging loop in real time; when the current signal is larger than a preset threshold value, the relay enables the diode to be in short circuit, and the solar panel directly charges the storage battery; and when the current signal is less than the preset threshold value, the control circuit dose not output a signal, and the diode is re-engaged in the charging loop. After adopting the control device and the control method thereof, the charging efficiency of the solar panel is effectively improved and the loss of the energy in the charging loop is reduced.

Description

technical field [0001] The invention relates to the field of solar charging, in particular to a control device capable of improving solar charging efficiency and a control method thereof. Background technique [0002] At present, in the solar charging system, the charging circuit between the solar panel and the battery is generally connected with a diode to use the unidirectional conductivity of the diode to avoid the voltage of the solar panel being lower than the voltage of the battery when the light is weak. And the occurrence of battery reverse discharge. However, when the solar panel generates current under sunlight and charges it to the battery through the diode, because the diode itself has a certain voltage drop (generally 0.7-1.4 volts) and generates heat, there is a gap between the solar panel and the battery. A certain voltage difference, which is a considerable loss for high current charging. Obviously, this not only affects the charging efficiency of solar pan...

AI Technical Summary

Problems solved by technology

However, when the solar panel generates current under sunlight and charges it to the battery through the diode, because the diode itself has a certain voltage drop (generally 0.7-1.4 volts) and generates heat, there is a gap between the solar panel and the battery. A certain voltage difference, which is a considerable loss for high current charging

Obviously, this not only affects the charging efficiency of solar panels, but also deviates from the concept of environmental protection and energy saving

In addition, although the unidirectional conductivity of the diode can prevent the reverse discharge of the battery, it requires that the voltage of the solar panel must be higher than the sum of the battery voltage and the diode voltage to charge, which further reduces the charging efficiency of the solar panel.

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