Independent photovoltaic mixed energy storage system

A hybrid energy storage system and independent photovoltaic technology, which is used in electrical energy storage systems, energy storage, electric vehicles, etc. Take advantage of the effect

Inactive Publication Date: 2011-11-23
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to solve technical problems such as low energy utilization rate and short service life caused by the single energy storage of the battery in the existing independent photovoltaic system, and to provide an independent photovoltaic hybrid energy storage system that can provide electric energy for ordinary and power loads

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] The invention combines the supercapacitor module and the storage battery module to give full play to their respective strengths. On the one hand, it can collect the energy emitted by the solar cell in the early morning, evening, and rainy weather when the sun is weak, and make more full use of the electric energy emitted by the solar cell. On the one hand, for power loads, the hybrid energy storage system can give full play to the characteristics of high power density of supercapacitors, reduce the impact on the battery, and prolong the service life of the battery.

[0016] refer to figure 1 , the independent photovoltaic hybrid energy storage system includes a solar panel 1 , a supercapacitor module 3 , a battery module 4 , an intelligent control system 2 and a load 5 . The solar panel 1 is the source of energy. The supercapacitor module 3 and...

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Abstract

The invention discloses an independent photovoltaic mixed energy storage system, which comprises a solar battery panel, a super capacitor module, a storage battery module, a load and an intelligent control system, wherein the solar battery panel provides an energy source; the intelligent control system detects the states of the solar battery panel, the storage battery module and the super capacitor module and further controls the super capacitor module to absorb electric energy which is sent by the solar battery panel when sunlight intensity is lower than a predetermined value; when the sunlight intensity is equal to the predetermined value, the solar battery panel operates at a maximum power point and stores the electric energy for the storage battery module; when the sunlight intensity keeps lower than the predetermined value, the super capacitor module absorbs the electric energy which is sent by the solar battery panel and then stores the electric energy in the storage battery module; and when the load is required to be supplied with power, the super capacitor module and the storage battery module provide energy for the load. The independent photovoltaic mixed energy storage system has the advantages that: the working efficiency of the solar battery panel can be improved; impact upon energization of the load on a storage battery is reduced; the service life of the storage battery is prolonged; and output power is improved.

Description

technical field [0001] The invention relates to an independent photovoltaic energy storage system, in particular to an independent photovoltaic hybrid energy storage system using batteries and supercapacitors as energy storage devices. Background technique [0002] After more than 100 years of development since its invention, the battery has become a very mature energy storage device. It has occupied a large market due to its advantages of cheap price, good safety, long service life, and more energy storage. At present, batteries are widely used in automobiles, photovoltaic systems, communications and other fields. [0003] Supercapacitor is a new energy storage device. Compared with traditional capacitors, the energy density of supercapacitors is 3 to 4 orders of magnitude larger; compared with batteries and lithium batteries, supercapacitors have high charge and discharge speed, high power density and longer life. Supercapacitors are one of the most promising energy st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J15/00
CPCY02E70/30
Inventor 李宝华潘学松杜鸿达贺艳兵康飞宇
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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