CN208257765U - A kind of intelligent photovoltaic terminal box - Google Patents
A kind of intelligent photovoltaic terminal box Download PDFInfo
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- CN208257765U CN208257765U CN201820878193.4U CN201820878193U CN208257765U CN 208257765 U CN208257765 U CN 208257765U CN 201820878193 U CN201820878193 U CN 201820878193U CN 208257765 U CN208257765 U CN 208257765U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a kind of intelligent photovoltaic terminal boxes, it includes photovoltaic cell component circuit module, microprocessor module, MPPT drive module and battery strings voltage acquisition module, photovoltaic cell component circuit module includes several concatenated photovoltaic electrification components, battery strings voltage acquisition module is used to measure the voltage of each photovoltaic electrification component of photovoltaic cell component circuit module and voltage value signal is transmitted to microprocessor module, microprocessor module controls MPPT drive module, MPPT drive module controls the electric current of each photovoltaic electrification component of photovoltaic cell component circuit module.The beneficial effects of the utility model are: passing through the electric current of each accurate photovoltaic electrification component of MPPT drive module, so that each component electric current is equal to maximum power point electric current, and main line voltage is adjusted by BUCK-BOOST circuit module, so as to avoid " wooden pail effect " of photovoltaic module, generated energy is improved.
Description
Technical field
The utility model relates to photovoltaic cell module or array field more particularly to a kind of intelligent photovoltaic terminal boxes.
Background technique
Solar energy will become one of global main energy sources in 21 century, on the earth other nearly all energy all directly or
It fetches from solar energy, the advantages that solar energy has that resource is sufficient, long-lived, widely distributed, safe and clean, technically reliable.Solar energy
Light power generation refers to the generation mode it is not necessary that luminous energy to be directly changed into electric energy by thermal process, by the exploitation of many years, solar energy
Power generation has also obtained significant progress.Solar power generation is set to be really achieved realistic scale, first is that improve solar photoelectric change
It changes efficiency and reduces its cost, second is that realize the same grid network of solar power generation.Solar battery is that utilization can generate
Photoelectric material converts light energy into electric energy according to photovoltaic effect.Wherein, solar components plate is widely used in building
Electricity generation system, a part is large-scale ground photovoltaic plant, a part is photovoltaic power station.
Photovoltaic junction box is interconnected for realizing solar components plate and external power supply component, thus by solar components plate
Power output to external important component.Solar components plate terminal box is also the bypass protector of solar components plate,
When solar components intralamellar part battery crack occurs or is blocked by shadow and generates hot spot effect, electric current will be by bypassing two poles
The protective device of pipe avoids the hot spot position persistent fever on component palette, to protect the safety of solar components plate.
105932959 A of Chinese patent application publication No. CN data of publication of application on 09 07th, 2016, discloses one kind
The photovoltaic junction box of bypass integration module with component level monitoring function, including box body, the box body lower part are equipped with pedestal, top
Equipped with box cover, and the box body top is equipped with mechanical localization mechanism, is fixed with diode integrated bypass mould on the mechanical localization mechanism
Block, the diode integrated bypass module have at least two metal connecting sheet, meanwhile, it is equipped with and is electrically connected to accordingly in the box body
The positive photovoltaic connector and cathode photovoltaic connector of metal connecting sheet, the anode photovoltaic connector are electrically connected with a cable, should
The other end of root cable extend out to the outside of the box body, and the box body lower part is equipped with an accommodating chamber, is equipped with one group in the accommodating chamber
The connecting line of part grade monitoring module, the component level monitoring module is soldered to corresponding gold medium frequency welding or by way of adding tin welding
Belong to connection sheet.The invention has the advantages that convenient for monitoring and maintenance.The bypass collection with component level monitoring function in above-mentioned patent
At the photovoltaic junction box of module, it only has the characteristics that convenient for monitoring and maintenance.It is series-like when due to photovoltaic module application
State, electric current must be consistent, but due to many factors such as the difference between component, sunlight blocks, assembly property change in long term, cracks
Cause component electric current to decline, and then will lead to other normal component electric currents on the string and also decline, to deviate its maximum power point
Electric current Imp, so other normal components will not be in maximum power point, output power decline, here it is " the wooden barrels of photovoltaic module
Effect ".
Utility model content
The technical problems to be solved in the utility model is how to design a kind of to realize that the electric current to every block assembly tracks
With the intelligent photovoltaic terminal box of control.
Used technical solution is the utility model in order to solve the above problem: a kind of intelligent photovoltaic terminal box, feature
It is, including photovoltaic cell component circuit module, microprocessor module, MPPT drive module and battery strings voltage acquisition module,
The photovoltaic cell component circuit module includes several concatenated photovoltaic electrification components, and the battery strings voltage acquisition module is used
In the voltage for measuring each photovoltaic electrification component and voltage value signal is transmitted to microprocessor module, the microprocessor module control
The MPPT drive module is made, the MPPT drive module controls each photovoltaic power generation group of the photovoltaic cell component circuit module
The electric current of part.The electric current that each photovoltaic electrification component is individually controlled by MPPT drive module is allowed to be equal to maximum power point electricity
Stream also declines so as to avoid the electric current decline initiation of a photovoltaic electrification component other normal component electric currents connected in series,
To improve generated energy.
Preferably, the both ends of each photovoltaic electrification component of the photovoltaic cell component circuit module and diode are simultaneously
Connection, and the both ends of each photovoltaic electrification component are in parallel with MOSFET simultaneously, and the reversal of diode is in photovoltaic electrification component
Both ends, the battery strings voltage acquisition module is used for the voltage at measuring diode both ends, and MPPT driving mould passes through the end IO
Mouth driving MOSFET.When the voltage of each photovoltaic electrification component of battery strings voltage acquisition module measurement does not wait, microprocessor
Module determines the electric current decline of the photovoltaic electrification component of low-voltage, and subsequent microprocessor module drives the corresponding of MPPT drive module
I/O port drives corresponding MOSFET work, to increase the electric current of corresponding photovoltaic electrification component, makes the electricity of each photovoltaic electrification component
It flows equal.
Preferably, the output port both ends of the photovoltaic cell component circuit module are equipped with the diode of reversal connection.
Preferably, the intelligent photovoltaic terminal box further includes BUCK-BOOST circuit module, outputs and inputs voltage acquisition
Module and output and input current acquisition module；The BUCK-BOOST circuit module is set to photovoltaic cell component circuit mould
On the main line of block, it is controlled by MPPT drive module, for adjusting main line voltage；It is described to output and input voltage acquisition module connection
Diode both ends at photovoltaic cell component circuit module output port, for measuring main line output voltage；It is described input and
Output current acquisition module is located on main line, for measuring main line electric current.When MPPT drive module improves the power generation electricity on main line
When stream, microprocessor module obtains actual power by outputting and inputting the port voltage value of voltage acquisition module acquisition
Output power, by comparison actual power output power and setting performance number, microprocessor module drives mould by control MPPT
Block controls BUCK-BOOST circuit module, so that main line voltage is adjusted, so that actual power output power and setting performance number
It is equal.
Preferably, the intelligent photovoltaic terminal box further includes main control module, PLC and radio-frequency communication module；The master control mould
Block includes storage unit, display unit, push-button unit, network interface unit, RS485 and data processing unit；The PLC is connected to master
It controls between module and microprocessor module, main control module passes through PLC control processor module；The radio-frequency communication module is for leading
Control the data exchange between module and microprocessor module.The voltage and current data that main control module collects microprocessor module
It stored, shown and is handled, to achieve the purpose that centralized management, and main control module passes through PLC to microprocessor module
Regulated and controled and is automatically shut down.
Preferably, the intelligent photovoltaic terminal box further includes communication module and remote-monitoring controller；The long-range monitoring
Controller is for remotely controlling main control module；The communication module is wire communication or wireless communication, for main control module and
Data exchange between remote-monitoring controller.Remote-monitoring controller is mobile phone, plate or other mobile terminals, Yong Hutong
APP control main control module is crossed, then main control module controls microprocessor module by PLC, and then realizes long-range control.
Preferably, the intelligent photovoltaic terminal box further includes temperature detecting module, the temperature detecting module is temperature-sensitive electricity
Resistance is located on photovoltaic cell string, for monitoring the temperature of photovoltaic cell string.
Preferably, the MPPT drive module includes reduction voltage circuit, IO driving and drive signal generator；The IO drives
It employs in driving MOSFET；The drive signal generator is for driving BUCK-BOOST circuit module；The reduction voltage circuit is used
It powers in for MPPT drive module.
Preferably, the wireless communication is that WiFi or 2G or 3G or 4G is communicated.
The beneficial effects of the utility model are: 1, pass through the electricity of each accurate photovoltaic electrification component of MPPT drive module
Stream so that each component electric current is equal to maximum power point electric current, and adjusts main line voltage by BUCK-BOOST circuit module, from
And " wooden pail effect " of photovoltaic module is avoided, improve generated energy；2, concentrate tube is carried out to control data by main control module
Reason, and realized by remote-monitoring controller and the long-range control of electrification component and intelligence are turned off, it is real by the acquisition to data
Existing big data analysis, realizes abnormal determination and positioning, to realize intelligent O&M.
Detailed description of the invention
Fig. 1 is the structural block diagram of the intelligent photovoltaic terminal box of the utility model.
Fig. 2 is the circuit connection schematic diagram of the intelligent photovoltaic terminal box of the utility model.
In figure: 1, microprocessor module, 2, photovoltaic cell component circuit module, 3, MPPT drive module, 4, battery strings electricity
Press acquisition module, 5, output and input voltage acquisition module, 6, output and output current acquisition module, 7, BUCK-BOOST circuit
Module, 8, radio-frequency communication module, 9, temperature detecting module, 10, main control module, 11, communication module, 12, remote-monitoring controller.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, specific embodiment of the present utility model is made further specific
Explanation.
Used technical solution is the utility model in order to solve the above problem: Fig. 1 is the intelligent photovoltaic of the utility model
The structural block diagram of terminal box, the intelligent photovoltaic terminal box include photovoltaic cell component circuit module 2, microprocessor module 1, MPPT
Drive module 3, BUCK-BOOST circuit module 7, outputs and inputs voltage acquisition module 5, is defeated battery strings voltage acquisition module 4
Enter and export current acquisition module 6, main control module 10, PLC, radio-frequency communication module 8, communication module 11,9 and of temperature detecting module
Remote-monitoring controller 12.Photovoltaic cell component circuit module 2 includes several concatenated photovoltaic electrification components, battery strings voltage
Acquisition module 4 is used to measure the voltage of each photovoltaic electrification component and voltage value signal is transmitted to microprocessor module 1, micro process
Device module 1 controls MPPT drive module 3, and MPPT drive module 3 controls each photovoltaic power generation group of photovoltaic cell component circuit module 2
The electric current of part.The both ends of each photovoltaic electrification component of photovoltaic cell component circuit module 2 and diodes in parallel, and it is each
The both ends of a photovoltaic electrification component are in parallel with MOSFET simultaneously, and the reversal of diode is in the both ends of photovoltaic electrification component, battery strings electricity
Acquisition module 4 is pressed to be used for the voltage at measuring diode both ends, MPPT drives mould to drive MOSFET, photovoltaic cell group by I/O port
The output port both ends of part circuit module 2 are equipped with the diode of reversal connection.When each photovoltaic that battery strings voltage acquisition module 4 measures
Whens the voltage of electrification component is not equal, microprocessor module 1 determines the electric current decline of the photovoltaic electrification component of low-voltage, subsequent micro- place
Managing device module 1 drives the corresponding I/O port of MPPT drive module 3 to drive corresponding MOSFET work, to increase corresponding photovoltaic power generation
The electric current of component keeps the electric current of each photovoltaic electrification component equal.MPPT drive module 3 includes reduction voltage circuit, IO driving and driving
Signal generator, IO driving is for driving MOSFET, and drive signal generator is for driving BUCK-BOOST circuit module 7.It is logical
The electric current that MPPT drive module 3 individually controls each photovoltaic electrification component is crossed, is allowed to be equal to maximum power point electric current, to avoid
The electric current decline of one photovoltaic electrification component causes other normal component electric currents connected in series and also declines, to improve hair
Electricity.BUCK-BOOST circuit module 7 is set on the main line of photovoltaic cell component circuit module 2, is controlled by MPPT driving mould
Block 3, for adjusting main line voltage；It outputs and inputs voltage acquisition module 5 and is connected to 2 output end of photovoltaic cell component circuit module
Diode both ends at mouthful, for measuring main line output voltage；It outputs and inputs current acquisition module 6 to be located on main line, be used for
Measure main line electric current.When MPPT drive module 3 improves the generation current on main line, microprocessor module 1 by input and it is defeated
The port voltage value that voltage acquisition module 5 obtains out, and then actual power output power is obtained, pass through comparison actual power output
Power and setting performance number, microprocessor module 1 control BUCK-BOOST circuit module 7 by control MPPT drive module 3,
To adjust main line voltage, so that actual power output power is equal with setting performance number.Main control module 10 include storage unit,
Display unit, push-button unit, network interface unit, RS485 and data processing unit；PLC is connected to main control module 10 and microprocessor
Between module 1, main control module 10 passes through PLC control processor module；Radio-frequency communication module 8 is used for main control module 10 and micro process
Data exchange between device module 1.The voltage and current data that main control module 10 collects microprocessor module 1 are stored,
Display and processing, to achieve the purpose that centralized management, and main control module 10 adjusts microprocessor module 1 by PLC
It controls and automatically shuts down.Remote-monitoring controller 12 is for remotely controlling main control module 10；Communication module 11 be wire communication or
Wireless communication is wirelessly communicated and is communicated for WiFi or 2G or 3G or 4G, is used for main control module 10 and remote-monitoring controller
Data exchange between 12.Remote-monitoring controller 12 is mobile phone, plate or other mobile terminals, and user is controlled by APP
Main control module 10, then main control module 10 controls microprocessor module 1 by PLC, and then realizes long-range control.Temperature detection mould
Block 9 is thermistor, is located on photovoltaic cell string, for monitoring the temperature of photovoltaic cell string.
Fig. 2 is the circuit connection schematic diagram of the intelligent photovoltaic terminal box of the utility model, as shown, the photovoltaic cell string
Be divided into three photovoltaic electrification components, the both ends of entire battery strings it is in parallel the diode D of reversal connection4, upper element is first group
Part, middle parts are the second component, and lower component is that third is set up, wherein the both ends of first assembly it is in parallel two poles being reversely connected
Pipe D1, while MOSFET in parallel1；The both ends of second component it is in parallel the diode D of reversal connection2, while MOSFET in parallel1；The
The both ends of three components it is in parallel the diode D of reversal connection3, while MOSFET in parallel3。MOSFET1、MOSFET2And MOSFET3Drive
Moved end is respectively IO Driver1, IO Driver2 and IO Driver3.BUCK-BOOST circuit is located at photovoltaic cell string main line
Positive terminal, be controlled by the drive signal generator of driving chip, driving chip is as MPPT drive module 3, the driving chip
It further include reduction voltage circuit, system power supply is powered after passing through reduction voltage circuit for driving chip, which further includes IO driving end
Mouthful, IO drives port for respectively by driving IO Driver1, IO Driver2 and IO Driver3 come for first assembly, the
Two components and third component increase electric current.Battery strings voltage acquisition module 4 divides for three voltage acquisition units, measures D respectively1、D2
And D3Both ends voltage value.Output and input voltage acquisition module 5 voltage signal at entire battery strings both ends is transmitted to it is micro-
Processor MCU outputs and inputs current acquisition module for main line current signal and is transmitted to Micro-processor MCV, and battery strings voltage is adopted
Collect module 4 for D1、D2And D3The voltage value at both ends be transmitted to Micro-processor MCV, Micro-processor MCV passes through comparison D1、D2And D3
Both ends voltage value difference come to driving chip send driving chip control signal, and then control IO driving end output.
Micro-processor MCV calculates practical photovoltaic generation power by main line current value and the voltage value at entire battery strings both ends, passes through ratio
The voltage value at entire battery strings both ends is adjusted to predetermined power value, Micro-processor MCV is by calculating practical photovoltaic generation power
Signal is controlled to adjust driving chip with the difference of predetermined power value, and then controls the finger of the drive signal generator of driving chip
It enables, total voltage is adjusted finally by BUCK-BOOST circuit, so that practical photovoltaic generation power is equal with predetermined power value.
Micro-processor MCV further includes less radio-frequency and PLC, and less radio-frequency is handed over for the data between main control MCU and Micro-processor MCV
It changes.Micro-processor MCV is connect by PLC with main control MCU, and main control MCU includes storage unit, display unit, push-button unit, network interface
Unit, RS485 and data processing unit, PLC are connected between main control MCU and micro process MCU, main control MCU by PLC control at
Manage device MCU.Main control MCU is stored, shown and is handled to the voltage and current data that Micro-processor MCV is collected, to reach
The purpose of centralized management, and main control MCU is regulated and controled and is automatically shut down to Micro-processor MCV by PLC.Main control MCU passes through
Wirelessly communicating perhaps wire communication to be connected to remote-monitoring controller and wherein wirelessly communicate is WiFi or 2G or 3G or 4G
Communication, remote-monitoring controller are mobile phone or plate or other mobile terminals, and user can be to photovoltaic power generation mistake by APP
Cheng Jinhang is remotely monitored and is operated, additionally it is possible to by big data analysis, abnormal determination and positioning is realized, to realize intelligent fortune
Dimension.
Embodiment described above is a kind of preferable scheme of the utility model, is not made to the utility model any
Formal limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (9)
1. a kind of intelligent photovoltaic terminal box, which is characterized in that including photovoltaic cell component circuit module, microprocessor module,
MPPT drive module and battery strings voltage acquisition module, the photovoltaic cell component circuit module include several concatenated photovoltaics
Electrification component, the battery strings voltage acquisition module are used to measure the voltage of each photovoltaic electrification component and transmit voltage value signal
To microprocessor module, the microprocessor module controls the MPPT drive module, described in the MPPT drive module control
The electric current of each photovoltaic electrification component of photovoltaic cell component circuit module.
2. a kind of intelligent photovoltaic terminal box according to claim 1, which is characterized in that the photovoltaic cell component circuit mould
The both ends of each photovoltaic electrification component of block and diodes in parallel, and the both ends of each photovoltaic electrification component simultaneously with
MOSFET is in parallel, and the reversal of diode is at the both ends of photovoltaic electrification component, and the battery strings voltage acquisition module is for measuring
The voltage at diode both ends, the MPPT driving mould drive MOSFET by I/O port.
3. a kind of intelligent photovoltaic terminal box according to claim 2, which is characterized in that the photovoltaic cell component circuit mould
The output port both ends of block are equipped with the diode of reversal connection.
4. a kind of intelligent photovoltaic terminal box according to claim 3, which is characterized in that further include BUCK-BOOST circuit mould
Block outputs and inputs voltage acquisition module and outputs and inputs current acquisition module；
The BUCK-BOOST circuit module is set on the main line of photovoltaic cell component circuit module, is controlled by MPPT driving mould
Block, for adjusting main line voltage；
The diode two for outputting and inputting voltage acquisition module and being connected at photovoltaic cell component circuit module output port
End, for measuring main line output voltage；
The current acquisition module that outputs and inputs is located on main line, for measuring main line electric current.
5. a kind of intelligent photovoltaic terminal box according to claim 1, which is characterized in that further include main control module, PLC and penetrate
Frequency communication module；
The main control module includes storage unit, display unit, push-button unit, network interface unit, RS485 and data processing unit；
The PLC is connected between main control module and microprocessor module, and main control module passes through PLC control processor module；
The radio-frequency communication module is for the data exchange between main control module and microprocessor module.
6. a kind of intelligent photovoltaic terminal box according to claim 5, which is characterized in that further include communication module and long-range prison
Control controller；The remote-monitoring controller is for remotely controlling main control module；The communication module is wire communication or nothing
Line communication, for the data exchange between main control module and remote-monitoring controller.
7. a kind of intelligent photovoltaic terminal box according to claim 6, which is characterized in that it further include temperature detecting module, institute
Stating temperature detecting module is thermistor, is located on photovoltaic cell string, for monitoring the temperature of photovoltaic cell string.
8. a kind of intelligent photovoltaic terminal box according to claim 4, which is characterized in that the MPPT drive module includes drop
Volt circuit, IO driving and drive signal generator；The IO driving is for driving MOSFET；The drive signal generator is used for
Drive BUCK-BOOST circuit module；The reduction voltage circuit is used to power for MPPT drive module.
9. a kind of intelligent photovoltaic terminal box according to claim 6, which is characterized in that it is described wireless communication be WiFi or
2G or 3G or 4G communication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820878193.4U CN208257765U (en) | 2018-06-07 | 2018-06-07 | A kind of intelligent photovoltaic terminal box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820878193.4U CN208257765U (en) | 2018-06-07 | 2018-06-07 | A kind of intelligent photovoltaic terminal box |
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| CN208257765U true CN208257765U (en) | 2018-12-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900157A (en) * | 2018-06-07 | 2018-11-27 | 意美旭智芯能源科技有限公司 | A kind of intelligent photovoltaic terminal box and current regulation method |
-
2018
- 2018-06-07 CN CN201820878193.4U patent/CN208257765U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900157A (en) * | 2018-06-07 | 2018-11-27 | 意美旭智芯能源科技有限公司 | A kind of intelligent photovoltaic terminal box and current regulation method |
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