CN202334375U - Off-grid intelligent photovoltaic controller - Google Patents
Off-grid intelligent photovoltaic controller Download PDFInfo
- Publication number
- CN202334375U CN202334375U CN 201120452385 CN201120452385U CN202334375U CN 202334375 U CN202334375 U CN 202334375U CN 201120452385 CN201120452385 CN 201120452385 CN 201120452385 U CN201120452385 U CN 201120452385U CN 202334375 U CN202334375 U CN 202334375U
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Abstract
The utility model relates to an off-grid intelligent photovoltaic controller. The off-grid intelligent photovoltaic controller is characterized by comprising a power plate, a master control plate, a communication monitoring plate and a man-machine interaction plate, wherein the power plate is provided with an input filter circuit, a Buck voltage reduction circuit is connected between input and output circuits; the master control plate is provided with a DSP (digital signal processor) master control circuit, a signal sample processing circuit and a storage battery temperature collection circuit, and the signal sample processing circuit comprises a voltage sample processing circuit and a current sample processing circuit; the man-machine interaction plate is provided with a touch screen and an indicator lamp; and the communication monitoring plate is provided with a singlechip communication master control circuit, a communication circuit and a case temperature collection circuit, wherein the singlechip communication master control circuit and the DSP master control circuit are connected through a SPI (single program initiation) communication interface so as to finish uplink-downlink data communication.
Description
Technical field
The utility model relates to the photovoltaic controller field, and is especially a kind of from the intelligent photovoltaic controller of net.
Background technology
The lower main control chip of the equal serviceability of present most of controller; The keyboard input is adopted in man-machine interaction more; Thereby have that the output voltage precision is low, output waveform is poor, conversion efficiency is not high, system reliability is low, debugging maintenance is difficult, device be prone to aging, be prone to that generation temperature affected by environment is floated, control system poor stability, manufacturing cost are high, product software upgrading difficulty and shortcomings such as the monitoring communications function is limited, security reliability difference, can not satisfy the requirement of social development.
The utility model content
The utility model technical assignment is to not enough in the above-mentioned technology, provides a kind of from the intelligent photovoltaic controller of net.
The utility model technical solution technical scheme that problem adopts is: comprise power amplifier board, master control borad, communication monitoring plate and man-machine interaction plate.Said power amplifier board is provided with input filter circuit, is connected with the Buck reduction voltage circuit between imput output circuit; Said master control borad is provided with DSP governor circuit, signal sampling treatment circuit and battery temp Acquisition Circuit, and this signal sampling treatment circuit comprises voltage sample treatment circuit and current sample treatment circuit; Said man-machine interaction plate is provided with touch-screen, indicator light.Said DSP governor circuit links to each other with voltage and current sampling processing circuit respectively through A/D; Said DSP governor circuit also links to each other with the Buck reduction voltage circuit respectively through ePWM simultaneously, and said DSP governor circuit also links to each other with the battery temp Acquisition Circuit through SPIA simultaneously.
Also be provided with overheating protection circuit on the said Buck circuit; Overtemperature protection adopts thermistor to detect the temperature of controller power device; Make along with the rising rotation speed of the fan of temperature is more and more faster, when the controller heatsink temperature drops to certain value, stop fan and rotate, reduce the wastage.
Said communication monitor board is provided with single chip communication governor circuit, communicating circuit, housing temperature Acquisition Circuit, and wherein single chip communication governor circuit and DSP governor circuit link to each other through the SPIB communication interface and accomplish the up-downgoing data communication.Communicating circuit is provided with RS485 communicating circuit and GSM/GPRS communicating circuit, and wherein RS485, GSM/GPRS communication can realize that service data detects and remote control with the data upload of gathering to host computers such as PCs.
The beneficial effect that the utility model can bring is:
(1) multiple functional.Adopt DSP28035 chip and STC single-chip microcomputer as main control chip, digital control approach, it is good to be easy to maintenance, scalable software, control precision height, real-time, has improved the reliability of system;
(2) the utlity model has three stages intelligent charges management, that is: 1. constant current charge stage, 2. constant voltage charge stage to storage battery; 3. floating charge stage; Wherein add the MPPT function, realize the MPPT maximum power point tracking of photovoltaic cell, improve the photovoltaic utilance in the constant current charge stage;
(3) the utility model adopts the Buck circuit to realize step-down, owing to there is not the existence of transformer, greatly reduces the volume and weight of controller, and good looking appearance, volume are little;
(3) communication function is strong, can realize that on-site supervision module and GSM/GPRS module are to functions such as service data detection and remote controls through the RS485 interface;
(4) novel visualization interface and safe key, each electrical parameter when adopting the operation of TFT screen displaying controller, intuitive is better; And pass through the setting and modifying that touch-screen is realized controller parameter, and had the management of the authority keys of setting.
Description of drawings
Fig. 1 is the theory structure block diagram of the utility model;
Fig. 2 is the power amplifier board circuit theory diagrams;
Fig. 3 is the master control borad circuit theory diagrams;
Fig. 4 is a signal sampling treatment circuit schematic diagram
Fig. 5 is a battery temp sample circuit schematic diagram
Fig. 6 protects graph of a relation automatically for power device;
Fig. 7 is monitoring communication board circuit theory diagrams;
Fig. 8 is man-machine interaction plate circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done following detailed description:
As shown in Figure 1, from the intelligent photovoltaic controller of net, comprise power amplifier board, master control borad and communication monitoring plate.Said power amplifier board is provided with and is connected with the Buck reduction voltage circuit between input filter circuit, imput output circuit; Said master control borad is provided with DSP governor circuit and signal sampling treatment circuit, and this signal sampling treatment circuit comprises voltage sample treatment circuit and current sample treatment circuit; On the said communication monitoring plate single chip communication governor circuit and communicating circuit are arranged; Said man-machine interaction plate is provided with touch-screen, indicator light.Said master control borad DSP governor circuit links to each other with voltage and current sampling processing circuit respectively through A/D, and said master control borad DSP governor circuit also also passes through SPIA and links to each other with the battery temp Acquisition Circuit through the ePWM said DSP governor circuit of while that links to each other with the Buck reduction voltage circuit simultaneously.
Fig. 2 is a power amplifier board main circuit schematic diagram, after the filtering of direct voltage process input filter circuit, through the step-down of Buck circuit, becomes the voltage of amplitude stability, supplies power for load and storage battery.Also be provided with overheating protection circuit on the said Buck circuit, overtemperature protection adopts thermistor to detect the temperature of controller power device, along with the rising rotation speed of the fan of temperature is more and more faster, when heatsink temperature drops to certain value, stops fan and rotates, and reduces the wastage.The utility model adopts the mode of Buck circuit step-down, owing to do not need transformer, greatly reduces the volume and weight of controller.
Fig. 3 is the main control board main control circuit schematic diagram.Main control board main control circuit mainly comprises dsp controller (TMS320F28035), signal sample circuit and battery temp Acquisition Circuit rapidly and efficiently.Among the figure, JP4 is a DLL, can after dispatching from the factory, carry out the renewal of system program through this interface easily.The DSP governor circuit is the core component of master control borad, and it is responsible for each road analog signal that the acquired signal sample circuit transmits, and the line data of going forward side by side is handled; Real time altering is exported the width of pwm pulse as required; And then the change output voltage amplitude, simultaneously for showing inside and outside information providing necessary, through display circuit with real-time the showing of the operational factor of controller; And receive the instruction of display module, communication module, carry out message transmission, control etc. as requested.
Fig. 4 is a signal sampling treatment circuit schematic diagram.The utility model is mainly sampled to input voltage, input current, Buck circuit output voltage, output current and the load current of photovoltaic controller.Controller input voltage and Buck circuit output voltage are direct voltage all, adopt direct current Hall voltage transducer to sample in the utility model, insert the A/D input of DSP28035 then through voltage follower.The direct current sampling adopts the direct current Hall element to sample, and inserts the A/D input of DSP28035 then through voltage follower.
Fig. 5 is a battery temp sample circuit schematic diagram.Utility model possesses the function of accumulator cell charging and discharging being carried out temperature-compensating; Need gather battery temp; The battery temp sample circuit adopts thermocouple to carry out the SPIA input that temperature sampling inserts DSP28035 in the utility model, and master control borad will be managed charging and discharging of accumulator according to the battery temp of gathering and carry out certain temperature-compensating.。
Fig. 6 protects graph of a relation automatically for power device.As shown in the figure, comprise direct current input side overvoltage protection and under-voltage protection, direct current outlet side overload protection and short-circuit protection can be realized through the DSP and the power device of controller self.Direct current input is under-voltage when occurring, when direct current input one of overvoltage, output overloading and four kinds of faults of output short-circuit, main control board main control circuit is forbidden pwm pulse output, and power device is turn-offed, thereby reaches the purpose of protection controller.
Fig. 7 is a communication monitoring motherboard circuit schematic diagram.Said communication monitoring mainboard is provided with single chip communication governor circuit, communicating circuit, housing temperature Acquisition Circuit, wherein the exchanges data of realization of single chip communication governor circuit and DSP governor circuit; Communicating circuit comprises RS485 on-site supervision and GSM/GPRS communicating circuit, can the communication governor circuit be uploaded to host computers such as PC from the controller operation information that obtains with the DSP governor circuit, can also realize that service data detects and remote control.The housing temperature Acquisition Circuit is gathered housing temperature, realizes the overtemperature protection to controller box.
Fig. 8 is man-machine interaction plate circuit theory diagrams, comprises touch-screen, indicator light etc.Adopt Transistor-Transistor Logic level to carry out communication between touch-screen display module and the main control board main control circuit, need not any communication receiving/transmission device chip, simple and reliable.
In sum, the utility model adopts DSP28035 chip and STC single-chip microcomputer as main control chip, and the performance of control system improves greatly, is easy to maintenance, software is scalable, control precision is high, real-time is good, has improved the reliability of system.The utility model has been established the three stage intelligent charge patterns that combine MPPT: 1. constant current charge stage, 2. constant voltage charge stage, 3. floating charge stage.Add the MPPT charging process in stage at the phase I constant current charge, these functions can satisfy the requirement of various power consumption equipments.
Simultaneously the utility model adopts the step-down of first Buck circuit, owing to there is not the existence of transformer, greatly reduces the volume and weight of controller, and good looking appearance, volume are little, and wide input voltage range, output accuracy is good, waveform quality is good.The utility model communication function is strong in addition, can realize functions such as service data detection and remote control, and each circuit parameter when having adopted the operation of TFT+LCD display controller in addition forms good visualization interface, and intuitive is better.
Claims (3)
1. one kind is left the intelligent photovoltaic controller of net, and it is characterized in that: comprise power amplifier board, master control borad, communication monitoring plate and man-machine interaction plate, said power amplifier board is provided with input filter circuit, is connected with the Buck reduction voltage circuit between imput output circuit; Said master control borad is provided with DSP governor circuit, signal sampling treatment circuit and battery temp Acquisition Circuit, and this signal sampling treatment circuit comprises voltage sample treatment circuit and current sample treatment circuit; Said man-machine interaction plate is provided with touch-screen, indicator light; Said communication monitor board is provided with single chip communication governor circuit, communicating circuit, housing temperature Acquisition Circuit, and wherein single chip communication governor circuit and DSP governor circuit link to each other through the SPI communication interface and accomplish the up-downgoing data communication.
2. according to claim 1 from the intelligent photovoltaic controller of net, it is characterized in that: also be provided with overheating protection circuit on the said Buck circuit.
3. according to claim 1 from the intelligent photovoltaic controller of net, it is characterized in that: said DSP governor circuit adopts the TMS320F28035 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120452385 CN202334375U (en) | 2011-11-15 | 2011-11-15 | Off-grid intelligent photovoltaic controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120452385 CN202334375U (en) | 2011-11-15 | 2011-11-15 | Off-grid intelligent photovoltaic controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334375U true CN202334375U (en) | 2012-07-11 |
Family
ID=46446339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120452385 Expired - Lifetime CN202334375U (en) | 2011-11-15 | 2011-11-15 | Off-grid intelligent photovoltaic controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953671A (en) * | 2015-07-08 | 2015-09-30 | 安徽农业大学 | Power self-management device for agricultural tracked robot serving as mobile node of Internet of Things |
| CN105226747A (en) * | 2015-09-22 | 2016-01-06 | 河南速达电动汽车科技有限公司 | A kind of batteries of electric automobile active equalization system of photovoltaic generation |
-
2011
- 2011-11-15 CN CN 201120452385 patent/CN202334375U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953671A (en) * | 2015-07-08 | 2015-09-30 | 安徽农业大学 | Power self-management device for agricultural tracked robot serving as mobile node of Internet of Things |
| CN105226747A (en) * | 2015-09-22 | 2016-01-06 | 河南速达电动汽车科技有限公司 | A kind of batteries of electric automobile active equalization system of photovoltaic generation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |