The role of the solar storage battery is to convert solar energy into electrical energy, supply load work or charge the battery pack; the control of the controller is to protect the charge and discharge of the battery pack; the battery pack is used for storage electrical energy; the action of the inverter is to power DC power Transform is AC. In the night or rainy day, the solar battery module does not work, and the battery pack is powered by the battery pack to the load.
Battery work mode can be divided into cyclic use and floating. It is often in a frequent charge and discharge operating state, that is, cyclic use; often in the charging state, it is floating, which can make up for the capacity loss caused by self-discharge. The photovoltaic power generation system belongs to the cyclic usage of the VRLA battery.
The composition of the photovoltaic power generation system is a power generation system that converts solar energy into electrical energy using the photovoltaic effect principle, which is usually composed of solar cell module, controller, battery pack, DC / AC inverter.
The photovoltaic power generation system is built in the remote mountainous area, the plateau, Gobi, and the natural environment is very harsh. The temperature changes in the working environment.
The battery in the photovoltaic power generation system has the following requirements:
(1) has a deep cycle discharge performance, and the charge and discharge cycle is long;
(2) Heavy chargeable ability;
(3) The capacity recovery ability after over-discharge is strong;
(4) Good charging acceptance;
(5) When the battery is used in a static environment, the electrolyte is not easy to layered;
(6) It has the performance of maintenance or less maintenance;
(7) It should have a good high and low temperature charge.
(8) Adapt to the environment of use in high altitude;
(9) Good consistency in the battery pack.
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