Hybrid system energy storage device

Abstract

The invention relates to a hybrid system energy storage device. The hybrid system energy storage device comprises a Buck / Boost converter, a parallel controller, a detection circuit I, a detection circuit II, a detection circuit III, a conditioning and protection circuit I, a conditioning and protection circuit II, a conditioning and protection circuit III, a drive circuit I, a drive circuit II, a controller, a supercapacitor and a storage battery. According to the hybrid system energy storage device disclosed by the invention, energy storage elements of the energy storage device comprise the storage battery and the supercapacitor, so that the energy storage device has the advantage that the storage battery is high in energy density and low in cost as the energy storage element and also has the advantage that the supercapacitor is high in power density, long in cycle life, high in charging and discharging efficiency and low in maintenance cost as the energy storage element. The requirement of an independent photovoltaic system for the energy storage device is met, the energy can be stored when supplied power is rich, the energy can be compensated when the supplied power is deficient, the requirement that the electric energy can be compensated in time can be met when a high power load is suddenly connected to the system, and voltage drop is inhibited.

Description

technical field [0001] The invention relates to an energy storage device, in particular to a hybrid system energy storage device. Background technique [0002] With the depletion of traditional energy sources, new energy technologies have become a hot research topic, among which wind energy and solar power have become the main development direction of new energy. Wind power generation has been widely used at home and abroad, and with the development of solar panel manufacturing process and control technology, solar power generation will also be widely used. Solar power can be realized by converting light energy into heat energy and then into electricity; it can also be realized by directly converting light energy into electricity through the photovoltaic effect. At present, more research is on the photovoltaic power generation system that directly converts electricity into electricity through the photovoltaic effect. This photovoltaic power generation system can be divided ...

AI Technical Summary

Problems solved by technology

[0005] As the most widely used energy storage battery, the battery has the characteristics of high energy density and low price, but it also has the disadvantages of short cycle life, strict charge and discharge current limitation, and it is easy to cause premature failure and capacity loss in harsh environments for a long time.

Images