CN102087001A

CN102087001A - Solar light emitting diode (LED) automatic converter

Info

Publication number: CN102087001A
Application number: CN2009102529057A
Authority: CN
Inventors: 鲍振平; 邵媛媛
Original assignee: SICHUAN FENGYE TECHNOLOGY Co Ltd
Current assignee: SICHUAN FENGYE TECHNOLOGY Co Ltd
Priority date: 2009-12-02
Filing date: 2009-12-02
Publication date: 2011-06-08
Anticipated expiration: 2029-12-02
Also published as: CN102087001B

Abstract

The invention relates to lighting and photoelectric conversion of public facilities in various application fields. A logic control principle of solar light emitting diode (LED) conversion is put into practice, and a real-time on-line monitoring technology is adopted, so that the aim of quick and stable conversion is fulfilled, a converter has double-voltage detection and monitoring functions, and the aims of automatic conversion and switching are completely fulfilled according to a charge transfer technical principle and a balance calculation program. A product comprises an emergency power supply system, wherein the emergency power supply system comprises a storage battery, a converter and an inverter; and after an external power supply loses voltage, an inverted voltage is automatically switched, and a main monitor and a switching device for controlling coupling can automatically switch power supply.

Description

The solar LED automatic switch

Technical field

Foundation of the present invention, the charge transfer technology principle with logic, the control principle of solar LED automatic switch, is specifically carried out combined type and is used.

Background technology

China is energy resource consumption big country, but the energy reserves amount is less, and energy availability and demand contradiction is inevitable outstanding day by day, and will show serious day.In China, carry out the energy supply diversification, expand the approach that solves energy scarcity, give full play to the effect of solar LED solar panel, as: the universal amount of the year two thousand twenty China solar energy reaches more than 35%, and the energy conservation of China is considerable.

The popularity rate of China's solar energy and advanced country in the world relatively also have very big distance; though China classifies the power supply of solar LED cell panel as the project of giving priority to of illumination; but the problem that is run into is still a lot; occurring how these always to solve at all is the problem that whole world developing country is being studied; the solar LED automatic switch that my company produced is that the monitoring pith is adjusted in two voltage protections and logic controller in real time; as the starting point of giving full play to the solar illuminating advantage, advanced product being reached transfer productivity fast to becomes energy-conservation pioneer.

The exchange of problem that the present invention proposes to solve with conversion, dock and protects the technology that enters real-time monitoring, accessory has the research and development product of high-tech sector, actively to make great efforts achievement remarkable owing to the attention relevant policies support enterprise of national and governments at all levels.Product has formed certain production scale in the transformation technology achievement.But can recognize after the serious analysis that the existing converter of China also all exists problem of different nature from the function technology.

Relatively differentiate for convenience and look into newly by daily research and development accumulation and retrieval, as follows by the achievement profiling of existing cognitive ability and horizontal solar LED converter:

1, TaiWan, China thinks that openly the supply unit of more advanced a kind of solar power supply system does not exist dynamic tracing and balance calculation, program only has common exchange, be difficult to reach the efficient that solar energy system should possess, simultaneously there is not logic translator, so these these products have a lot of obstructions in the application of large-scale public utility at all.The technological achievement of being announced competitiveness in the international market is not high, can only play a role to middle-size and small-size normal lighting.

2; disclosed single-chip microcomputer of Shenzhen vocational technical school and power supply changeover device emergency power supply converting system; occurring decompression in the application process of market interrupts; stablize non-equilibrium state after the voltage AC power decompression that the LED solar panel is occurred simultaneously; so the conversion of bypass supply and load voltage AC/DC is subjected to bigger influence; Shanghai Xinhua Electronics Co., Ltd. openly sends out a kind of based on its characteristics of bus switch Power Supply Monitoring of CAN or based on power conversion in sum; the simulation output unit by power supply characteristic and connect operation and form; just increase but conversion speed still is subjected to the very big influence while does not also possess the dual power supply function from stability; still do not reach required achievement after dropping into application; no matter authenticate this class voltage stabilizing converter structural design or real-time monitoring and protection does not exist, more there is not conversion with city's net through serious analysis.Transfer power, stability and the market competitiveness that can draw above product from above-mentioned argumentation are not strong.

Summary of the invention

The know-why of project institute foundation is: the principle of following the trail of peak power and load transfer technology.

It adopts photoelectricity to isolate by designing high-quality power supply circuits, and the filter of software ripple is with the accurate measure of effect and voltage is not normal and no-voltage monitors and recover the real-time recovery electric voltage frequency.Protection and control form balanced protection voltage.Both solar cell output 12-18V DC voltage was input to three grades of bistable volt circuits after vast capacity electric capacity promotes, constitute by 2 mu balanced circuit chips and a high power transistor, after voltage stabilizing integrated chip IC1 voltage stabilizing, control high power transistor Q1 earlier, make transistor Q1 emitter-base bandgap grading and stable 12V output, integrated chip IC2 is and even voltage stabilizing output, having guaranteed 12V stability and power, is charge in batteries after the filtering of process two-stage again.Enter the logic detection commutation circuit then, output detected value after the two voltage checking chip IC3 of logic circuit detect, enter voltage ratio again than chip IC 4, integrated chip IC4 exports fiducial value then, thereby control the process that transistor Q2 and relay K 1 reach battery and civil power conversion, thereby kept the stable supplying of load voltage.

Adopting integrated chip is the 12V efficient stable power supply of central processing unit; the higher-order of oscillation input integrated chip 4049B hex inverter that its governor circuit adopts advanced collection chip centroid TDA4718 to produce 100HZ as center processor drives two high-power and hands over and should manage; again by switch transformer output 16-19V voltage; after full-wave rectification, carry out the two-stage stabilising circuit again and carry out stable 12V output; this circuit is taken a sample and the pulsewidth adjustment by integrated chip 7AA761A and optocoupler components CNY17F2 simultaneously; circuit is carried out more perfect protection and adjustment, thereby reach the protectiveness and the stability of circuit.

Description of drawings

Fig. 1 is an invention product role

Fig. 2 is power supply circuits

Fig. 3 be the 220V power unit,

Fig. 4 is a converter unit

The specific embodiment

The know-why that the present invention uses be " solar LED automatic switch " project from: 1. light source is selected; 2. control circuit; 3. innovative design is carried out with solar LED automatic switch structure in three aspects such as solar module and accumulator capacity affirmation.

LED is a kind of light emitting semiconductor device that electric energy can be converted into visible light, and the LED technology has had crucial breakthrough in recent years, and its ratio of performance to price also is greatly improved.Led light source has the optical efficiency height, and near the twice of incandescent lamp, the life-span is long, can reach more than the 105H; Traditional light source power consumption is bigger, and under high pressure works mostly, use the inversion link of boosting to reduce energy utilization rate again, and LED adopts low-voltage DC supply, and safety and light source control cost are low, uses energy-conservation obviously, frequently switch becomes possibility.

The design of controller circuitry and the selection of low energy-consumption electronic device are extremely important.The voltage comparator that employing is made of integrated transporting discharging is as control circuit, and the control system that sort circuit is made up of hardware fully is simple and reliable, easy to maintenance, cost is low, the power consumption of circuit own is also extremely low, is the good circuit of a kind of matching.The key of sort circuit is with poor at reasonable voltage of the ad hoc meter of charging and discharging of accumulator, the selection of device is reliable simultaneously, add the charging and discharging state written instructions circuit that light emitting diode constitutes, just become a controller circuitry, had the overdischarge of electricity storage preventing pond, a function of overcharging with utility function.System adopts the mode charge-discharge control circuit that connects coupling at least, according to the matching properties of LED with battery, can make power adaptive, some months in the solar irradiation deficiency, because the charged state of battery is lower usually, terminal voltage is also lower when making battery discharging, and the loaded work piece electric current is less like this, power is little, and system also can work the longer time.Otherwise when solar irradiation was relatively more sufficient, the loaded work piece electric current was big, power is big, also can be brighter.

The combination of solar cell and accumulator capacity is to need under the prerequisite in the proof load reliability, determines to use minimum solar module and accumulator capacity, reaches the best combination of reliability and economy with optimized design.Weigh because of adopting load short of electricity rate (LOLP) both at home and abroad mostly for reliability.It is defined as system blackout and actual required electricity consumption time ratio.The LOLP value is between 0 to 1, and numerical value is more little, and reliability is high more.For reliability requirement certain limit should be arranged, when photovoltaic system designs at home in the past, no matter often its purposes how, always be designed to reach and do not have a power failure, promptly require IJLP=0, in fact AC network also can only reach the IJLP=1013 order of magnitude to big city power supply, big 1 this require the relatively costly photovoltaic system of price to reach 100% reliability, obviously be irrational.Thereby when design, when satisfying the rational reliability of load, best economy be arranged.

Claims

1. solar LED automatic switch is characterized in that this converter comprises: solar panels, bistable are pressed charging system, battery, logic electronics switch, LED load, are monitored detection system, city's net power supply, high frequency switch power, bistable straightening stream 12V in real time.

2. solar LED automatic switch according to claim 1 is characterized in that: described bistable presses charging system to constitute real-time monitoring system, HF switch system by the line map of accompanying drawing 2 regulations.

3. solar LED automatic switch according to claim 1 is characterized in that: described bistable straightening stream 12V is made of the line map of accompanying drawing 3 regulations.

4. solar LED automatic switch according to claim 1 is characterized in that: described logic electronics switched system is made of the circuit of accompanying drawing 4 regulations.