CN203827278U - Remote monitoring type photovoltaic junction box based on measuring current and power wire carrier - Google Patents
Remote monitoring type photovoltaic junction box based on measuring current and power wire carrier Download PDFInfo
- Publication number
- CN203827278U CN203827278U CN201420161401.0U CN201420161401U CN203827278U CN 203827278 U CN203827278 U CN 203827278U CN 201420161401 U CN201420161401 U CN 201420161401U CN 203827278 U CN203827278 U CN 203827278U
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- Prior art keywords
- diode
- junction box
- photovoltaic
- current circuit
- measuring current
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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 remote monitoring type photovoltaic junction box based on measuring current and a power wire carrier. The remote monitoring type photovoltaic junction box comprises a diode string, two photovoltaic cable interfaces, a measuring current circuit module and an MCU microprocessor. The diode string comprises a plurality of diodes which are connected in series in the same direction, the number of the diodes is same with that of photovoltaic cells, and the diodes are in one-to-one correspondence parallel connection with the photovoltaic cells. The two photovoltaic cable interfaces are respectively connected to the two ends of the diode string. The measuring current circuit module and each diode in the diode string are connected in series respectively, and the output end of the measuring current circuit module is connected with the MCU microprocessor. The MCU microprocessor is connected with a control host machine outside the photovoltaic junction box through the power wire carrier. According to the remote monitoring type photovoltaic junction box, a measuring current circuit is used to detect the current which passes through the diode string, the MCU microprocessor with a monitoring function is integrated, when the measuring current circuit defects that the current which passes through the diode is too high, the monitored abnormal state is transmitted to the control host machine through the power wire carrier, and the real-time monitoring of the temperature of the photovoltaic junction box is realized.
Description
Technical field
The utility model relates to field of photovoltaic power generation, relates 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 ensure 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.
Utility model content
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.
The technical solution of the utility model 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 utility model is:
The utility model 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 utility model 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 utility model.
Brief description of the drawings
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
As shown in Figure 1, photovoltaic junction box of the present utility model, 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 described in the utility model and MCU microprocessor 4, main control system 6 are commercial goods.Described electrical lead carrier wave is prior art.
Above-described is only preferred implementation of the present utility model, and the utility model is not limited to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive or associate under the prerequisite that does not depart from spirit of the present utility model and design, within all should thinking and being included in protection range of the present utility model.
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 |
|---|---|---|---|
| CN201420161401.0U CN203827278U (en) | 2014-04-03 | 2014-04-03 | Remote monitoring type photovoltaic junction box based on measuring current and power wire carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161401.0U CN203827278U (en) | 2014-04-03 | 2014-04-03 | Remote monitoring type photovoltaic junction box based on measuring current and power wire carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203827278U true CN203827278U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420161401.0U Expired - Fee Related CN203827278U (en) | 2014-04-03 | 2014-04-03 | Remote monitoring type photovoltaic junction box based on measuring current and power wire carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203827278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888062A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves |
-
2014
- 2014-04-03 CN CN201420161401.0U patent/CN203827278U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888062A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20150403 |
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| EXPY | Termination of patent right or utility model |