The electric power replenishing method of photoelectric curtain wall photovoltaic system and system
Technical field
The present invention relates to solar energy power technology and curtain wall technology, be specifically related to the electric power replenishing method and the system of photoelectric curtain wall photovoltaic system.
Background technology
Photoelectric curtain wall is with the outer enclosed structure of electro-optical package as curtain wall panel, be a kind ofly collect generating, sound insulation, heat insulation, safety, decoration functions is the novel building curtain wall of one, it has gathered solar energy power technology and curtain wall technology, is a kind of novel functional building curtain wall.Photoelectric curtain wall adopts photocell, electro-optical package technology, the sunlight that was taken as adverse factor in the past and masked, is converted into the electric energy that can be utilized by people.This electric energy still is a kind of net energy source, and power generation process is consume fuel not, and noiselessness pollutes, and has embodied present industrial products environmental protection, energy-conservation development trend to the full extent.
The photoelectric curtain wall photovoltaic system comprises that the electro-optical package as the photoelectric curtain wall panel is solar-energy photo-voltaic cell, controller for solar, batteries, inverter, load etc.Its course of work is: photoelectric curtain wall is shining upon down, produce direct current by electro-optical package, by multipole current collection, promptly the direct current that under the control of controller for solar photoelectric curtain wall is produced stores by batteries, during use, the direct current of batteries output changes into operational alternating current through processes such as inversion, transformations, sends into supply network or directly drives load.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of by changing the control mode of controller for solar, and the direct current that photoelectric curtain wall is produced is stored into electric power replenishing method and the system in the batteries to greatest extent.
Technical scheme provided by the invention is: a kind of electric power replenishing method of photoelectric curtain wall photovoltaic system, wherein, the photoelectric curtain wall photovoltaic system comprise charhing unit that the electro-optical package as building curtain wall, the batteries that is used to store direct current energy, AC network charge to batteries for input, with the direct current of batteries output convert to alternating current inverter, be connected the load of inverter ac output end and the controller that described above-mentioned each parts are controlled, described electric power replenishing method is characterised in that, may further comprise the steps:
S1) during to inverter or electric, detect the voltage of described batteries in batteries; If the voltage of batteries then starts described charhing unit and with AC network and solar-energy photo-voltaic cell described batteries is charged less than predetermined first numerical value;
S2) in batteries during to inverter or electric, if the voltage that detects described batteries greater than predetermined second value, is then closed described charhing unit with the charge circuit of AC network to described batteries.
In said method, described first numerical value is identical with second value.
Another technical problem of the present invention solves like this, construct a kind of electric energy replenishment system of photoelectric curtain wall photovoltaic system, comprise as building curtain wall or be installed in electro-optical package on the building curtain wall, batteries as electric energy storage, the input of described batteries is connected with first charge circuit and second charge circuit that is derived from AC network from the curtain wall electro-optical package respectively, the output of described batteries is connected to load so that Alternating Current Power Supply to be provided through inversion unit, also comprise with first charging and melt down the voltage detector that coupling is used to detect the accumulator battery voltage value, the controlled switch and the input that are connected in second charge circuit connect voltage detector, output connects the controller of controlled switch, when the numerical value that detects voltage detector when controlled switch is in off status less than first predetermined value, the control controlled switch is a conducting state; When detecting voltage detector numerical value controlled switch is conducting state greater than second value, then controlling controlled switch is closed condition.
Implement the electric power replenishing method and the system of photoelectric curtain wall photovoltaic system provided by the invention, by changing the control mode of controller for solar, in controller for solar, increase the function of utility grid and the complementary charging of photoelectric curtain wall solar-energy photo-voltaic cell, the direct current that photoelectric curtain wall is produced is stored in the batteries to greatest extent, thereby improves the utilance that electro-optical package is a solar-energy photo-voltaic cell effectively.
Description of drawings
Fig. 1 is the work schematic diagram of the electric energy replenishment system of photoelectric curtain wall photovoltaic system of the present invention;
Fig. 2 represents for the logic diagram of the electric energy replenishment system embodiment of photoelectric curtain wall photovoltaic system of the present invention.
Embodiment
As shown in Figure 1, in according to system provided by the invention, for realizing the function of electrical network and photoelectric curtain wall solar-energy photo-voltaic cell complementary pair battery charging, promptly when accumulator battery voltage is low excessively when causing photoelectric curtain wall photovoltaic cell undercharge, civil power and photoelectric curtain wall photovoltaic cell are simultaneously to the charge in batteries in the photoelectric curtain wall photovoltaic system, thereby satisfy the charge function of photoelectric curtain wall photovoltaic system need of work, changed in the prior art, when photovoltaic cell is not enough to charge in batteries, system will cut off solar-energy photo-voltaic cell automatically to charge in batteries, and change the working method of storage battery being charged separately by electrical network; Become now when photovoltaic cell is not enough to charge in batteries, system simultaneously to the charge in batteries in the photoelectric curtain wall photovoltaic system, has effectively improved the utilance of solar-energy photo-voltaic cell by civil power and photoelectric curtain wall photovoltaic cell.
As shown in Figure 2, as building curtain wall or be installed in electro-optical package 1 on the building curtain wall direct current output can be provided, batteries 2 as electric energy storage, can input dc power be preserved and output DC when needed, batteries 2 has two inputs, first charge circuit that provides from curtain wall electro-optical package 1 is provided one, the output of its two connections rectification circuit 3, the input of rectification circuit 3 is powered by electric main, civil power and rectification circuit 3 and controlled switch 4 have constituted second charge circuit that is derived from AC network, in first charge circuit, also be provided with charged state detecting unit 5, be used to detect the voltage of batteries 2, the output of batteries 2 is connected with inversion unit 6, the output of inversion unit 6 will provide Alternating Current Power Supply output to the load that is connected or city's electrical network, also comprise the controller 7 that the signal of input detection unit 5 is controlled controlled switch 4, control like this: when the numerical value that detects voltage detector 5 when controlled switch 4 is in off status less than first predetermined value (this numerical value depends on the specification and the electric parameter of photovoltaic cell and batteries), control controlled switch 4 is promptly opened second charge circuit for conducting state; When the numerical value that detects voltage detector 5 greater than second value promptly first charge circuit charging is enough and controlled switch 4 when to be conducting state promptly still charge for two-way separately, then control controlled switch 4 and be closed condition, promptly a reservation and storage are from the electric energy of electro-optical package 1.First and second predetermined values can be identical, but for avoiding frequent switching that a difference can be arranged, for example first numerical value is 2.8 volts, second value is 3 volts, and the output voltage that promptly charges starts the two-way charging less than 2.8 volts, as detect battery tension greater than 3 volts, be cut to one tunnel charging.