CN103888069A - Remote monitoring type photovoltaic junction box based on Hall sensors and WIFI transmission - Google Patents
Remote monitoring type photovoltaic junction box based on Hall sensors and WIFI transmission Download PDFInfo
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- CN103888069A CN103888069A CN201410133784.5A CN201410133784A CN103888069A CN 103888069 A CN103888069 A CN 103888069A CN 201410133784 A CN201410133784 A CN 201410133784A CN 103888069 A CN103888069 A CN 103888069A
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- junction box
- diode
- photovoltaic
- hall effect
- photovoltaic junction
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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 monitoring type photovoltaic junction box based on Hall sensors and WIFI transmission. The remote monitoring type photovoltaic junction box comprises a diode string, photovoltaic cable connectors, Hall effect sensor modules and an MCU microprocessor. The diode string comprises a plurality of diodes which are in series connection in the same direction, the number of the diodes is the same as the number of photovoltaic cells, and the diodes and the photovoltaic cells are correspondingly in parallel connection. The two photovoltaic cable connectors are connected to the two ends of the diode string respectively. The Hall effect sensor modules are connected to circuits of all the diodes in the diode string respectively, the output ends of the Hall effect sensor modules are connected with the MCU microprocessor, and the MCU microprocessor is connected with a control host computer outside the photovoltaic junction box through WIFI. According to the remote monitoring type photovoltaic junction box based on the Hall sensors and WIFI transmission, the Hall effect sensors are used for detecting large currents flowing through the diode string, the MCU microprocessor with the monitoring function is integrated, when it is detected by the Hall effect sensors that the currents flowing through the diodes are too high, the monitored abnormal condition is transmitted to the control host computer through WIFI, and accordingly the temperature of the photovoltaic junction box can be monitored in real time.
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 Hall element and WIFI transmission.
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.
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 Hall element and WIFI transmission, 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 Hall element and WIFI transmission, 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, hall effect sensor 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 hall effect sensor module is connected on the circuit of the each diode in diode string, and for detecting the electric current that flows through each diode, the output of described hall effect sensor module connects MCU microprocessor; Described MCU microprocessor connects the main control system outside photovoltaic junction box by WIFI.
Useful technique effect of the present invention is:
The present invention uses hall effect sensor to detect the large 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 at hall effect sensor, the abnormality monitoring is transferred to main control system by WIFI, has 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.
Brief description of the drawings
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, hall effect sensor module 3 and MCU microprocessor 4 in the cavity forming between upper cover and base.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 hall effect sensor modules 3 are connected on the circuit of the each diode in diode string 1, and for detecting the electric current that flows through each diode, the output of each hall effect sensor module 3 connects MCU microprocessor 4.MCU microprocessor 4 connects the output of each hall effect sensor module 3, and the output of MCU microprocessor connects the main control system 6 outside photovoltaic junction box by WIFI.In the time that hall effect sensor module 3 detects 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 transferred out to main control system 6 with WIFI by MCU microprocessor 4, realize the temperature remote real-time monitoring of photovoltaic junction box.Hall effect sensor module 3 of the present invention and MCU microprocessor 4, main control system 6 are commercial goods.
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 Hall element and WIFI transmission, 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), hall effect sensor 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 hall effect sensor module (3) is connected on the circuit of the each diode in diode string (1), for detecting the electric current that flows through each diode, the output of described hall effect sensor module (3) connects MCU microprocessor (4); Described MCU microprocessor (4) connects the main control system (6) outside photovoltaic junction box by WIFI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410133784.5A CN103888069A (en) | 2014-04-03 | 2014-04-03 | Remote monitoring type photovoltaic junction box based on Hall sensors and WIFI transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410133784.5A CN103888069A (en) | 2014-04-03 | 2014-04-03 | Remote monitoring type photovoltaic junction box based on Hall sensors and WIFI transmission |
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| Publication Number | Publication Date |
|---|---|
| CN103888069A true CN103888069A (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410133784.5A Pending CN103888069A (en) | 2014-04-03 | 2014-04-03 | Remote monitoring type photovoltaic junction box based on Hall sensors and WIFI transmission |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255571A (en) * | 2011-07-20 | 2011-11-23 | 浙江尖山光电股份有限公司 | Photovoltaic array intelligent junction box |
| CN102683446A (en) * | 2011-03-11 | 2012-09-19 | 上海上斯电子有限公司 | Diode module for protecting solar photovoltaic battery component |
| CN102761290A (en) * | 2011-04-26 | 2012-10-31 | 国琏电子（上海）有限公司 | Junction box |
| CN102931684A (en) * | 2012-11-09 | 2013-02-13 | 东华大学 | Photovoltaic alternate current and direct current intelligent distribution box |
| CN203827280U (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 Hall sensor and WIFI transmission |
-
2014
- 2014-04-03 CN CN201410133784.5A patent/CN103888069A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683446A (en) * | 2011-03-11 | 2012-09-19 | 上海上斯电子有限公司 | Diode module for protecting solar photovoltaic battery component |
| CN102761290A (en) * | 2011-04-26 | 2012-10-31 | 国琏电子（上海）有限公司 | Junction box |
| CN102255571A (en) * | 2011-07-20 | 2011-11-23 | 浙江尖山光电股份有限公司 | Photovoltaic array intelligent junction box |
| CN102931684A (en) * | 2012-11-09 | 2013-02-13 | 东华大学 | Photovoltaic alternate current and direct current intelligent distribution box |
| CN203827280U (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 Hall sensor and WIFI transmission |
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Application publication date: 20140625 |