CN103888062A - Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves - Google Patents
Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves Download PDFInfo
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- CN103888062A CN103888062A CN201410133252.1A CN201410133252A CN103888062A CN 103888062 A CN103888062 A CN 103888062A CN 201410133252 A CN201410133252 A CN 201410133252A CN 103888062 A CN103888062 A CN 103888062A
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- diode
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- current detection
- diode string
- mcu microprocessor
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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 invention discloses a remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves. The remote monitor type photovoltaic connecting box comprises a diode string, photovoltaic cable interfaces, current detection circuit modules and an MCU microprocessor. The diode string comprises a plurality of diodes connected in series in the same direction, the number of the diodes is equal to that of photovoltaic cells, and the diodes and the photovoltaic cells are in one-to-one correspondence and are connected in parallel. The two photovoltaic cable interfaces are connected to the two ends of the diode string respectively. The current detection circuit modules are connected with the diodes in the diode string in series respectively, and the output ends of the current detection circuit modules are connected with the MCU microprocessor. The MCU microprocessor is connected with a control host outside the photovoltaic connecting box through the electric wire carrier waves. Current detection circuits are used for detecting currents flowing through the diode string, the MCU microprocessor with the monitor function is integrated, and when the current detection circuits detect that the currents flowing through the diodes are too high, the monitored abnormal state is transmitted to the control host through the electric wire carrier waves, and real-time monitor on the temperature of the photovoltaic connecting box is achieved.
Description
Technical field
The present invention relates to field of photovoltaic power generation, relate in particular to the photovoltaic junction box being applied in photovoltaic generating system, particularly a kind of remote monitoring type photovoltaic junction box based on surveying electric current and electrical lead carrier wave.
Background technology
In the electric connection technology of photovoltaic generating system, conventionally adopting photovoltaic junction box to realize photovoltaic module is the electrical connection between solar battery group and inverter.Current photovoltaic junction box arranges an installation cavity between box body, is arranged in installation cavity with the conducting strip of diode.The quantity of diode is identical with the quantity of solar cell, and with solar cell one by one correspondence be connected in parallel.The effect of diode is to utilize the principle of its forward conduction, oppositely cut-off to prevent that reverse charging from damaging solar battery group, and prevents that the solar cell from opening circuit and cause whole solar battery group all cannot use.When solar battery group all when normal, do not have electric current to flow through diode; When having a solar cell because fortuitous event is cannot normal power generation time, diode protection state starts, and has larger electric current and flows through diode.Because diode is wanted the electric current of the about 10A of conducting in when work, can cause a large amount of hot stacks, produce higher temperature, along with the continuous rising of diode temperature, resistance in diode will constantly increase, cause diode to produce more heat, enter vicious circle thereby waste more electric power resource.Therefore, in order to guarantee the reliably working of photovoltaic junction box, the temperature of diode can not be very high, and the real-time monitoring of temperature is seemed to particularly important.
Summary of the invention
For the problems referred to above of existing photovoltaic junction box, applicant, through Improvement, provides a kind of remote monitoring type photovoltaic junction box based on surveying electric current and electrical lead carrier wave, realizes the real-time monitoring of photovoltaic junction box temperature.
Technical scheme of the present invention is as follows:
A kind of remote monitoring type photovoltaic junction box based on surveying electric current and electrical lead carrier wave, comprise the upper cover and the base that mutually cover, between upper cover and base, form cavity, in described cavity, comprise diode string, photovoltaic cable interface, survey current circuit module and MCU microprocessor; Described diode string comprises the diode of multiple series aiding connections, and the quantity of diode is identical with the quantity of photovoltaic cell, and with photovoltaic cell one by one correspondence be connected in parallel; Described photovoltaic cable interface has two, is connected to respectively the two ends of diode string; Described survey current circuit module is connected with the each diode in diode string respectively, and for detecting the electric current that flows through each diode, the output of described survey current circuit module connects MCU microprocessor; Described MCU microprocessor connects the main control system outside photovoltaic junction box by electrical lead carrier wave.
Useful technique effect of the present invention is:
The present invention uses survey current circuit to detect the electric current of the diode string of flowing through, and the integrated MCU microprocessor with monitoring function, detect and flow through diode current when too high surveying current circuit, the abnormality monitoring is arrived to main control system by electrical lead carrier transmission, realized the real-time monitoring of photovoltaic junction box temperature.
Advantage of the present invention will provide in the description of embodiment part below, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
As shown in Figure 1, photovoltaic junction box of the present invention, by comprising diode string 1, photovoltaic cable interface 2 in the cavity forming between upper cover and base, surveying current circuit module 3 and MCU microprocessor 4.Diode string 1 comprises the diode of multiple series aiding connections, and the quantity of diode is identical with the quantity of photovoltaic cell 5, and with photovoltaic cell 5 one by one correspondence be connected in parallel.Two photovoltaic cable interfaces 2 are connected to respectively the two ends of diode string 1.Multiple survey current circuit modules 3 are connected with the each diode in diode string 1 respectively, and for detecting the electric current of each diode of flowing through, the output of surveying current circuit module 3 connects MCU microprocessor 4.MCU microprocessor 4 connects the output of each survey current circuit module 3, and the output of MCU microprocessor connects the main control system 6 outside photovoltaic junction box by electrical lead carrier wave.In the time surveying current circuit module 3 and detect that the electric current of the diode of flowing through is too high, illustrate that this diode temperature is too high, the abnormal data of acquisition is gone out to main control system 6 with electrical lead carrier transmission by MCU microprocessor 4, realize the temperature remote real-time monitoring of photovoltaic junction box.Survey current circuit module 3 of the present invention and MCU microprocessor 4, main control system 6 are commercial goods.Described electrical lead carrier wave is prior art.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive or associate without departing from the spirit and concept in the present invention, within all should thinking and being included in protection scope of the present invention.
Claims (1)
1. the remote monitoring type photovoltaic junction box based on surveying electric current and electrical lead carrier wave, comprise the upper cover and the base that mutually cover, between upper cover and base, form cavity, it is characterized in that: in described cavity, comprise diode string (1), photovoltaic cable interface (2), survey current circuit module (3) and MCU microprocessor (4); Described diode string (1) comprises the diode of multiple series aiding connections, and the quantity of diode is identical with the quantity of photovoltaic cell (5), and same photovoltaic cell (5) one by one correspondence be connected in parallel; Described photovoltaic cable interface (2) has two, is connected to respectively the two ends of diode string (1); Described survey current circuit module (3) is connected with the each diode in diode string (1) respectively, for detecting the electric current that flows through each diode, the output of described survey current circuit module (3) connects MCU microprocessor (4); Described MCU microprocessor (4) connects the main control system (6) outside photovoltaic junction box by electrical lead carrier wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410133252.1A CN103888062A (en) | 2014-04-03 | 2014-04-03 | Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410133252.1A CN103888062A (en) | 2014-04-03 | 2014-04-03 | Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103888062A true CN103888062A (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410133252.1A Pending CN103888062A (en) | 2014-04-03 | 2014-04-03 | Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves |
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| CN (1) | CN103888062A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924733A (en) * | 2021-01-29 | 2021-06-08 | 广东电网有限责任公司 | Junction box and metering device |
| CN113098388A (en) * | 2019-12-23 | 2021-07-09 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module, junction box for photovoltaic module and power station abnormity determination method |
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| US20090195081A1 (en) * | 2005-01-26 | 2009-08-06 | Guenther Spelsberg Gmbh & Co. Kg | Protective circuit |
| KR100999978B1 (en) * | 2010-06-25 | 2010-12-13 | 박기주 | Monitoting control unit of solar power generation system |
| CN201773167U (en) * | 2010-08-23 | 2011-03-23 | 吕纪坤 | Photovoltaic component junction box sensing and detecting device |
| CN102386258A (en) * | 2010-09-02 | 2012-03-21 | 国琏电子（上海）有限公司 | Junction box and solar system |
| KR101169289B1 (en) * | 2012-04-17 | 2012-07-30 | (주)대연씨앤아이 | Connector band of solar panel and controlling method thereof |
| CN102841301A (en) * | 2012-09-27 | 2012-12-26 | 常州旭能新能源科技有限公司 | Photovoltaic assembly monitoring system |
| CN103296112A (en) * | 2012-03-05 | 2013-09-11 | 上海捷波通信科技有限公司 | Junction box and intelligent motoring system of solar battery component |
| CN203827278U (en) * | 2014-04-03 | 2014-09-10 | 苏州边枫电子科技有限公司 | Remote monitoring type photovoltaic junction box based on measuring current and power wire carrier |
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2014
- 2014-04-03 CN CN201410133252.1A patent/CN103888062A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090195081A1 (en) * | 2005-01-26 | 2009-08-06 | Guenther Spelsberg Gmbh & Co. Kg | Protective circuit |
| KR100999978B1 (en) * | 2010-06-25 | 2010-12-13 | 박기주 | Monitoting control unit of solar power generation system |
| CN201773167U (en) * | 2010-08-23 | 2011-03-23 | 吕纪坤 | Photovoltaic component junction box sensing and detecting device |
| CN102386258A (en) * | 2010-09-02 | 2012-03-21 | 国琏电子（上海）有限公司 | Junction box and solar system |
| CN103296112A (en) * | 2012-03-05 | 2013-09-11 | 上海捷波通信科技有限公司 | Junction box and intelligent motoring system of solar battery component |
| KR101169289B1 (en) * | 2012-04-17 | 2012-07-30 | (주)대연씨앤아이 | Connector band of solar panel and controlling method thereof |
| CN102841301A (en) * | 2012-09-27 | 2012-12-26 | 常州旭能新能源科技有限公司 | Photovoltaic assembly monitoring system |
| CN203827278U (en) * | 2014-04-03 | 2014-09-10 | 苏州边枫电子科技有限公司 | Remote monitoring type photovoltaic junction box based on measuring current and power wire carrier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098388A (en) * | 2019-12-23 | 2021-07-09 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module, junction box for photovoltaic module and power station abnormity determination method |
| CN112924733A (en) * | 2021-01-29 | 2021-06-08 | 广东电网有限责任公司 | Junction box and metering device |
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Application publication date: 20140625 |