Control device and control method for charge and discharge of solar cell

Abstract

The invention belongs to the field of cell charge, and particularly relates to a control device and a control method for the charge and discharge of a solar cell. The control device is characterized by comprising a solar panel, a charge control circuit, an automatic lock switch K1, a cell pack, an automatic lock switch K2 and an inverter which are sequentially connected. The control method comprises the following steps of: step 1, displaying a sunlight intensity signal, and displaying the charge and discharge voltage values of the cell pack on a display circuit; step 2, judging whether the discharge voltage value turns on or turns off the automatic lock switch K2 to discharge the cell pack by a central processor, and whether a standby cell pack is enabled; step 3, judging whether the charge voltage value turns on or turns off the automatic lock switch K1 to enable the cell pack to be in a charged state by the central processor; step 4, judging whether to charge the standby cell pack or turns off a self-locking switch device. Because power-off control can be completely realized to avoid the phenomena of trickles and backflow in a loop, thus ensuring the longer service life of the cell.

Description

technical field [0001] The invention relates to the field of battery charge and discharge control, in particular to a solar battery charge and discharge control device and a control method thereof. Background technique [0002] Solar energy is a new type of renewable energy, which is the process of converting the radiant energy of sunlight into electrical energy. In recent years, solar photovoltaic power generation technology has become a hot spot in development and research. As an ideal source of electric energy generation, it has achieved remarkable results; solar power generation systems generally consist of solar cells, solar controllers, and storage batteries (groups). , if the output power is 220V or 110V, it is also necessary to configure a control system such as an inverter. Due to the instability of photovoltaic power generation, it is necessary to store and reuse the electric energy converted from solar energy. [0003] In order to realize the energy storage and u...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned problems in the prior art, and to provide a solar battery that detects the voltage of the storage battery in real time during the charging process, and when the battery is overcharged, overdischarged or not in use, the battery and the circuit The battery and the battery are disconnected, and the loop cannot be formed, thus avoiding the phenomenon of trickle flow in the loop

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