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Selection of Battery Type for Energy Storage Station

Author: Source: Datetime: 2016-10-28 17:06:45

System Consist

Energy storage power plants (STPs), including the PV module array, the PV controller, the lifepo4 battery pack, the battery management system (BMS) and the associated storage power plant. Systems, etc., solar power generation system.

The photovoltaic module array uses the photovoltaic effect of the solar panel to convert light energy into electric energy, and then charges the lithium battery pack, and converts the direct current into alternating current through the inverter to supply power to the load. The intelligent controller continuously varies according to the intensity and load of the sunshine. The working state of the battery group to switch and adjust: on the one hand the adjusted power directly to the DC or AC load. On the other hand the excess energy sent to the battery storage.


Power generation can not meet the load needs, the controller to the battery power to the load, to ensure the continuity and stability of the entire system; grid inverter system consists of several inverters, the DC battery into Standard 380V mains access to the user side of the low-voltage power grid or by the step-up transformer into the high-voltage power grid.

 battery pack

LiFePO4 batteries in the system at the same time play a balance of energy regulation and load the two major roles. It will be photovoltaic power generation system output of electrical energy into chemical energy can be stored up to prepare for power shortage.

3.2 Battery Selection

As energy storage power station, energy storage battery is a very important component to meet the needs of photovoltaic power generation access, to achieve peak load shifting, load compensation, improve power quality applications, must meet the following requirements:

Easy to achieve multi-mode combination to meet the higher operating voltage and larger operating current; battery capacity and performance can be detected and diagnosed, the control system can predict the battery capacity and performance of the case to achieve the solar power generator plant load control scheduling;


High safety and reliability: under normal use, the normal life of the battery is not less than 15 years; in the limit case, even if the failure is also controlled, should not be an explosion, combustion and other hazards to the safe operation of power plant failure ; With good fast response and large capacity charge and discharge capacity, generally require 5-10 times the charge and discharge capacity; high charge and discharge conversion efficiency; easy to install and maintain; has good environmental adaptability, a wide operating temperature range.

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