CN104234472A

CN104234472A - Solar parking shed

Info

Publication number: CN104234472A
Application number: CN201310105517.2A
Authority: CN
Inventors: 徐成琦
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-21
Filing date: 2013-06-21
Publication date: 2014-12-24

Abstract

The invention provides a solar parking shed capable of generating electricity by a solar panel at the top of the parking shed, charging electric bicycles stopped in the shed and powering illuminating lamp in the shed. Therefore, the thermoelectric conversion of the solar cell panel can be brought into play. The solar parking shed can be built in the vicinity of subway station, in a regional area and the like. The solar parking shed is composed of a solar cell panel, a controller, a storage battery, and the basic principle is that the solar cell panel arranged at the top of the shed is used for generating electricity, charging the electric bicycles by connecting electric energy with the electric bicycles through the controller, and storing electric quantity in a lead-acid battery with large capacity. According to the solar parking shed, the electric bicycles charged by solar power generation on the larger surface of the solar parking shed can be realized, the dependence on a public grid by the electric bicycles can be reduced, and the concept of green energy can be popularized among nationals.

Description

A kind of solar parking shed

Technical field

This patent proposes a kind of solar panels at carport top that utilize and generates electricity, and not only can charge for the electric bicycle be parked in bicycle shed, can also power for the illuminating lamp in bicycle shed.The thermoelectricity conversion of solar panel can be given full play to like this.Thisly solar parking shedly can build near subway station, in community etc.

Background technology

The concept of solar electric vehicle is referred to for a long time, but is not exactly because the cost of solar panel is too high by the main cause popularized all the time, and photoelectric transformation efficiency is low, and benefit is not directly proportional to input.How better solar energy resources to be utilized in the traffic of the mankind? this patent proposes a kind of solar parking shed, this bicycle shed can be built near subway station, in community etc., everybody just can share solar panel like this, has given full play to the effectiveness of solar panel.

Summary of the invention

Solar parking shedly to be made up of solar panel, controller, batteries, its general principle utilizes the solar panel generating being arranged on bicycle shed top, and the electric energy of generation is charged by controller connection electric motor car, and electricity can be stored in jumbo lead-acid accumulator.Bicycle shed can also provide other charging socket, is the small electric apparatus chargings such as the mobile phone that user carries with.

According to object of the present invention, the present invention will describe the basic structure of solar parking shed charging system, solar parking shed structure and installation, the solar parking shed computational methods of battery series-parallel connection number, the selection of battery and charging optimisation strategy method in detail.

Solar panel: be together in series by some by solar module, just can obtain required operating voltage.When solar cell array is to charge in batteries, the serial number of solar module must suitably, if serial number very little, series voltage is lower than battery float charge voltage, and square formation just can not to charge in batteries.When the output voltage of series component is far above float charge voltage, charging current does not have obvious increase yet.Therefore, during the float charge voltage only having the series voltage when solar module to equal suitable, best charged state just can be reached.Design formulas is:

Ns=UR/U _DC=(Uf+UD+UC)/UDC

In formula, UR is the minimum voltage that solar cell array exports, and UDC is the optimum operating voltage of solar module, and Uf is battery float charge voltage, and UD is diode drop, generally gets 0.7V, and UC is the pressure drop that other factors causes.

Solar module used in parallel is the shortest interval number of days institute generated energy between overcast and rainy continuously, not only charges for electric motor car, also needs to supply battery at the longest continuous overcast and rainy interior lost electricity.Number design formulas in parallel is:

NP=(Bcb+NwQL)/(QPNW)

Bcb be two groups the longest overcast and rainy continuously between need the accumulator capacity of supplementing

Nw be two groups the longest overcast and rainy continuously between the shortest interval number of days, generally get 30 days

QL=P/V _L?*?N

QP is solar module daily generation

According to the connection in series-parallel number of solar module, the power of required solar cell array can be drawn.

P=PONSNP?(W)

Wherein PO is the rated power of solar module

Battery be solar parking shed in one of topmost parts, its effect stores the electric energy that solar vehicle-shed top solar panel array produces, and reduces or supplement the power of electric flatcar charging requirement when not generating electricity night when sunshine amount.When solar electrical energy generation power sharply declines, battery plays cushioning effect, ensures the stable of voltage.When selecting battery types, need to consider its electric property, size, weight, the life-span, battery tension and maximum current time the parameter of the aspects such as power, charge-discharge performance that can export.This patent uses sealed type lead acid battery as the energy storage device of solar energy electric bicycle shed system.Native system adopts the charging control strategy optimized to carry out charging to battery and controls, and effectively can extend the application life of battery.Because photovoltaic system is subject to the impact of environment temperature and change at sunshine, use conventional charging strategy can not reach the object of efficiency utilization, the optimisation strategy one that this patent provides: for avoiding battery all the time in charge less state, batteries is divided into the group of different capabilities, concentrate limited array energy to charge to group, make group reach full state, cyclically implement such charging for different group, thus make batteries depart from charge less state all the time, improve battery characteristics.The optimisation strategy two that this patent provides: adopt the recovery being suitably fully conducive to accumulator capacity, particularly after battery deep discharge, point group storage battery increases discharge current, reduces battery acid layering and crystallite size.

The function of controller is very important, is responsible for MPPT maximum power point tracking control, accumulator cell charging and discharging controls, and effectively avoids accumulator super-charge, crosses and put.

Solar parking shedly perfect can realize larger surperficial solar electrical energy generation.Utilizing solar parking shed is electric bicycle charging, can reduce the dependence of electric bicycle to public electric wire net, and be conducive to the concept of universal green energy resource in its people.

Accompanying drawing explanation

Fig. 1 is the basic block diagram of a kind of solar parking shed charging system provided by the invention;

Fig. 2 is a kind of solar parking shed structural representation provided by the invention

Detailed description of the invention

Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment is only for instruction and explanation of the present invention, is not intended to limit the present invention.

Fig. 1 is the basic block diagram of a kind of solar parking shed charging system provided by the invention, as shown in Figure 1;

Above solar cell, cover one deck convex lens in figure, due to the optically focused effect of lens, the service efficiency of sunshine can be improved more than 40%.Light after lens focus is radiated on solar battery array, and the dc power of output directly supplies electric flatcar charging, supplies charge in batteries in addition simultaneously.This battery is at night and overcast and rainyly provide necessary electrical power by electric discharge to electric flatcar, because the voltage of load often can produce fluctuation, in order to ensure that battery has best charging current and voltage, so be also provided with controller with regulation voltage.Controller serves fast, steadily, efficiently for charge in batteries, and in charging process Loss reducing, the effect of increasing storage battery service life.3 pairs of posts on controller are connected with DC load with solar cell array, battery respectively.

Fig. 2 is solar parking shed structural representation provided by the invention, as shown in Figure 2:

Solar module is arranged on the inclined-plane of parking ceiling, is oriented Due South, and angle of inclination is 20 degree to 40 degree, adopts polysilicon solar cell.Battery component when mounted should be fixed, can stand local maximum wind power.Assembly two ends bypass diode in parallel, the generated energy that can prevent shade from causing declines.Will note polarity when mounted, the positive pole of bypass diode is connected with the negative pole of battery component, can not wrong.Bypass diode is in reverse-bias state at ordinary times, does not substantially consume electric energy.Therefore, the withstand voltage and permission of bypass diode should be greater than operating voltage and the electric current of assembly by forward current.The standing part of cell panel adopts dry type pad, removes pad and just can change module easily.Be equipped with Special wiring Storage case in addition, cable wiring manufacture and maintenance activity can be carried out from outside.Current solar cell color has black, blue, palm fibre three kinds of colors, need consider consistent with surrounding buildings style when designing carport.If 36 pieces of cell panels installed by assembly, every block cell panel generated output is 0.21KW, and whole bicycle shed can generate electricity 7.56KW.The battery power failure capacity of each carport is 9.7 degree.Once consume 0.1 degree of electricity by the charging of each electric flatcar to calculate, this solar vehicle-shed every day can for 100 electric motor car chargings.

Although above to invention has been detailed description, the present invention is not limited thereto, those skilled in the art can carry out various amendment according to principle of the present invention.Therefore, all amendments done according to the principle of the invention, all should be understood to fall into protection scope of the present invention.

Claims

1. one kind solar parking shed, it is characterized in that:

Solar module is arranged on the inclined-plane of parking ceiling, is oriented Due South, and angle of inclination is 20 degree to 40 degree, adopts polysilicon solar cell.

2. one kind solar parking shed, it is characterized in that:

Above solar cell, cover one deck convex lens, due to the optically focused effect of lens, the service efficiency of sunshine can be improved more than 40%.

3. one kind solar parking shed, it is characterized in that:

The bypass diode in parallel at solar module two ends, the generated energy that can prevent shade from causing declines.

4. one kind solar parking shed, it is characterized in that:

For effectively extending the application life of battery, avoid battery all the time in charge less state, batteries is divided into the group of different capabilities, limited array energy is concentrated to charge to group, group is made to reach full state, cyclically implement such charging for different group, thus make batteries depart from charge less state all the time, improve battery characteristics.