CN203056617U - Solar charging controller based on single-chip microcomputer - Google Patents
Solar charging controller based on single-chip microcomputer Download PDFInfo
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- CN203056617U CN203056617U CN 201220664988 CN201220664988U CN203056617U CN 203056617 U CN203056617 U CN 203056617U CN 201220664988 CN201220664988 CN 201220664988 CN 201220664988 U CN201220664988 U CN 201220664988U CN 203056617 U CN203056617 U CN 203056617U
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- storage battery
- chip microcomputer
- solar cell
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- positive pole
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Abstract
The utility model discloses a solar charging controller based on a single-chip microcomputer. The solar charging controller comprises the single-chip microcomputer, and a solar cell, a storage battery module and a charge and discharge control circuit respectively connected to the single-chip microcomputer, wherein an optical coupler circuit is arranged between the charge and discharge control circuit and the single-chip microcomputer, and the solar cell and a storage battery are respectively in parallel with a differential voltage acquisition circuit. The solar charging controller is simple in structure, and effectively prevents overcharging and over-discharging of a storage battery, thereby protecting the storage battery, prolonging the service lifetime of the storage battery. The single-chip microcomputer serving as microcontroller of the system is high in performance and low in cost. The solar charging controller employing a differential voltage acquisition circuit is simple in structure, and accurately monitors the electric quantity of the solar cell and the storage battery in the system.
Description
Technical field
The utility model relates to charger, specifically, is based on the solar charging controller of single-chip microcomputer.
Background technology
Along with the progress of expanding economy, society, people propose more and more higher requirement to the energy, and energy supply and demand is particularly thorny in recent years, and seeking new forms of energy becomes the urgent problem that current mankind faces.The restriction that sunlight does not have a region is land or ocean no matter, and no matter high mountain or island all have everywhere, directly development and utilization, and must not exploit and transport.The electricity consumption of China present stage is mainly still generated electricity by in the water, but resource is being lower than in the distribution very inhomogeneously in the water of China, has more significance so utilize storage of solar energy to send electric power in China.At present, there have been some solar energy power accumulating technology, had to be solved and improve but still deposit some problems, such as the problem that exists storage battery to cross to put, overcharge, had a strong impact on the physical life of storage battery.
The utility model content
The purpose of this utility model is to provide SCM Based solar charging controller, can regulate the charging and discharging process of control storage battery automatically, has prolonged the useful life of storage battery.
The utility model is achieved through the following technical solutions: SCM Based solar charging controller, comprise single-chip microcomputer and be connected to solar cell, battery module and charge-discharge control circuit on the single-chip microcomputer, be connected to photoelectric coupled circuit between described charge-discharge control circuit and the single-chip microcomputer, described solar cell and storage battery are parallel with the dividing potential drop Acquisition Circuit respectively.Described single-chip microcomputer is the AT89S51 single-chip microcomputer.
Described charge-discharge control circuit comprises that counnter attack fills diode D1, metal-oxide half field effect transistor Q1, metal-oxide half field effect transistor Q2, also comprise capacitor C 1 and sustained diode 2, the positive pole that diode D1 is filled in counnter attack connects the positive pole to solar cell, the negative pole that diode D1 is filled in counnter attack connects the S utmost point to metal-oxide half field effect transistor Q1, the positive pole of capacitor C 1 connects to counnter attack and fills the negative pole of diode D1 and the S utmost point of metal-oxide half field effect transistor Q1, the negative pole of capacitor C 1 connects the negative pole to solar cell, while ground connection, the D utmost point of metal-oxide half field effect transistor Q1 connects the positive pole to storage battery, metal-oxide half field effect transistor Q2 is in parallel with storage battery, the S utmost point connects the positive pole to storage battery, the D utmost point of MOSFET pipe Q2 is connected with the negative pole of storage battery, while ground connection, the negative pole of sustained diode 2 connects to the S utmost point of the positive pole of storage battery and MOSFET pipe Q2, the positive pole of sustained diode 2 is connected with the negative pole of storage battery, while ground connection, and the G utmost point of MOSFET pipe Q1 and Q2 is connected with single-chip microcomputer by photoelectric coupled circuit respectively.Metal-oxide half field effect transistor is with low cost, and volume is little, the degree of integration height.
The dividing potential drop Acquisition Circuit of described solar cell and storage battery is connected with single-chip microcomputer by digital to analog converter respectively.Described digital to analog converter adopts the TLC549 chip, and price is low, the performance height.
Described dividing potential drop Acquisition Circuit is made up of resistance R 1 and the resistance R 2 of series connection, resistance R 1 place one termination is to the positive pole of solar cell or storage battery, resistance R 2 places one termination is to the negative pole of solar cell or storage battery, and R1 and R2 indirect are to digital to analog converter simultaneously.The dividing potential drop Acquisition Circuit can accurately be monitored the voltage of solar cell and storage battery, by digital to analog converter the signal of telecommunication is changed into digital signal and supplies with single-chip microcomputer identification.
On described single-chip microcomputer, also be connected to reset circuit, prevent that effectively the situation of program fleet or deadlock from appearring in single-chip microcomputer.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) the utility model is simple in structure, has prevented from effectively that storage battery from crossing to let slip to fill that the protection storage battery has prolonged the physical life of storage battery.
(2) the utility model adopts single-chip microcomputer as the microcontroller of system, and performance is powerful, and cheap.
(3) the dividing potential drop Acquisition Circuit that adopts in the utility model is simple in structure, and the accurate state of charge of solar cell and storage battery in the monitoring system.
Description of drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the circuit diagram of charge and discharge circuit and dividing potential drop Acquisition Circuit.
Embodiment
Be described in further detail below in conjunction with the utility model of embodiment, but execution mode of the present utility model is not limited thereto.
Embodiment:
The utility model structure as shown in Figure 1, SCM Based solar charging controller, comprise single-chip microcomputer and be connected to solar cell, battery module and charge-discharge control circuit on the single-chip microcomputer, be connected to photoelectric coupled circuit between described charge-discharge control circuit and the single-chip microcomputer, described solar cell and storage battery are parallel with the dividing potential drop Acquisition Circuit respectively.
Charge-discharge control circuit as shown in Figure 2, the positive pole that diode D1 is filled in counnter attack connects the positive pole to solar cell, the negative pole that diode D1 is filled in counnter attack connects the S utmost point to metal-oxide half field effect transistor Q1, effectively prevents current reflux, the injury solar cell.The positive pole of capacitor C 1 connects to counnter attack and fills the negative pole of diode D1 and the S utmost point of metal-oxide half field effect transistor Q1, the negative pole of capacitor C 1 connects the negative pole to solar cell, while ground connection, the D utmost point of metal-oxide half field effect transistor Q1 connects the positive pole to storage battery, metal-oxide half field effect transistor Q2 is in parallel with storage battery, the S utmost point connects the positive pole to storage battery, the D utmost point of MOSFET pipe Q2 is connected with the negative pole of storage battery, while ground connection, the negative pole of sustained diode 2 connects to the S utmost point of the positive pole of storage battery and MOSFET pipe Q2, the positive pole of sustained diode 2 is connected with the negative pole of storage battery, while ground connection, the G utmost point of MOSFET pipe Q1 and Q2 is connected with single-chip microcomputer by photoelectric coupled circuit respectively.Metal-oxide half field effect transistor plays the effect of switch in circuit, needed driving voltage is very little, and sensitivity is good.
During system works, solar cell begins to collect earlier solar energy, and transform light energy is become electric energy.This moment, the dividing potential drop Acquisition Circuit of solar cell and storage battery was gathered the voltage of solar cell and storage battery respectively, and voltage signal is passed to digital to analog converter.Digital to analog converter passes to single-chip microcomputer with it after converting voltage signal to analog signal, and single-chip microcomputer begins to analyze and determine charge mode.The signal of single-chip microcomputer output passes to metal-oxide half field effect transistor through photoelectric coupled circuit, thus the control charge and discharge circuit.The mode of control metal-oxide half field effect transistor conducting is the wide modulation of pulse, modulates the bigoted of metal-oxide half field effect transistor pipe grid according to the load change of programming, reaches the realization switching function.When the voltage of storage battery is between 10.8V-12V, select fast mold filling formula; When the voltage of storage battery is between 12V-14.5V, select the floating charge pattern; When the voltage of storage battery stops charging during for 14.5V.
On single-chip microcomputer, also be connected to reset circuit, prevented that effectively the situation of program fleet or deadlock from appearring in single-chip microcomputer.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all falls within the protection range of the present utility model any simple modification, equivalent variations that above embodiment does.
Claims (5)
1. SCM Based solar charging controller, comprise single-chip microcomputer and be connected to solar cell, storage battery and charge-discharge control circuit on the single-chip microcomputer, it is characterized in that: be connected to photoelectric coupled circuit between described charge-discharge control circuit and the single-chip microcomputer, described solar cell and storage battery are parallel with the dividing potential drop Acquisition Circuit respectively.
2. SCM Based solar charging controller according to claim 1, it is characterized in that: described charge-discharge control circuit comprises that counnter attack fills diode D1, metal-oxide half field effect transistor Q1, metal-oxide half field effect transistor Q2, also comprise capacitor C 1 and sustained diode 2, the positive pole that diode D1 is filled in counnter attack connects the positive pole to solar cell, the negative pole that diode D1 is filled in counnter attack connects the S utmost point to metal-oxide half field effect transistor Q1, the positive pole of capacitor C 1 connects to counnter attack and fills the negative pole of diode D1 and the S utmost point of metal-oxide half field effect transistor Q1, the negative pole of capacitor C 1 connects the negative pole to solar cell, while ground connection, the D utmost point of metal-oxide half field effect transistor Q1 connects the positive pole to storage battery, metal-oxide half field effect transistor Q2 is in parallel with storage battery, the S utmost point connects the positive pole to storage battery, the D utmost point of MOSFET pipe Q2 is connected with the negative pole of storage battery, while ground connection, the negative pole of sustained diode 2 connects to the S utmost point of the positive pole of storage battery and MOSFET pipe Q2, the positive pole of sustained diode 2 is connected with the negative pole of storage battery, while ground connection, the G utmost point of MOSFET pipe Q1 and Q2 is connected with single-chip microcomputer by photoelectric coupled circuit respectively.
3. SCM Based solar charging controller according to claim 1, it is characterized in that: the dividing potential drop Acquisition Circuit of described solar cell and storage battery is connected with single-chip microcomputer by digital to analog converter respectively.
4. according to claim 2 or 3 described SCM Based solar charging controllers, it is characterized in that: described dividing potential drop Acquisition Circuit is made up of resistance R 1 and the resistance R 2 of series connection, resistance R 1 place one termination is to the positive pole of solar cell or storage battery, resistance R 2 places one termination is to the negative pole of solar cell or storage battery, and R1 and R2 indirect are to digital to analog converter simultaneously.
5. SCM Based solar charging controller according to claim 1 is characterized in that: also be connected to reset circuit on described single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220664988 CN203056617U (en) | 2012-12-06 | 2012-12-06 | Solar charging controller based on single-chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220664988 CN203056617U (en) | 2012-12-06 | 2012-12-06 | Solar charging controller based on single-chip microcomputer |
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| Publication Number | Publication Date |
|---|---|
| CN203056617U true CN203056617U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220664988 Expired - Fee Related CN203056617U (en) | 2012-12-06 | 2012-12-06 | Solar charging controller based on single-chip microcomputer |
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| CN (1) | CN203056617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262197A (en) * | 2015-11-06 | 2016-01-20 | 柴东澜 | Grid-connected power generation control system for solar street lamp |
-
2012
- 2012-12-06 CN CN 201220664988 patent/CN203056617U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262197A (en) * | 2015-11-06 | 2016-01-20 | 柴东澜 | Grid-connected power generation control system for solar street lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20131206 |