CN203824668U - Remote monitoring type photovoltaic conjunction box based on thermistor temperature measurement and RFID transmission - Google Patents

Remote monitoring type photovoltaic conjunction box based on thermistor temperature measurement and RFID transmission Download PDF

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Publication number
CN203824668U
CN203824668U CN201420155242.3U CN201420155242U CN203824668U CN 203824668 U CN203824668 U CN 203824668U CN 201420155242 U CN201420155242 U CN 201420155242U CN 203824668 U CN203824668 U CN 203824668U
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CN
China
Prior art keywords
photovoltaic
diode
thermistor
thermistor temperature
diode string
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Expired - Fee Related
Application number
CN201420155242.3U
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Chinese (zh)
Inventor
不公告发明人
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Suzhou Bianfeng Electronic Technology Co Ltd
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Suzhou Bianfeng Electronic Technology Co Ltd
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Priority to CN201420155242.3U priority Critical patent/CN203824668U/en
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Publication of CN203824668U publication Critical patent/CN203824668U/en
Expired - Fee Related legal-status Critical Current
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The utility model discloses a remote monitoring type photovoltaic conjunction box based on thermistor temperature measurement and RFID transmission. The remote monitoring type photovoltaic conjunction box comprises a diode string, a photovoltaic cable interface, a thermistor temperature measurement circuit module and an MCU microprocessor, wherein the diode string comprises a plurality of serially connected diodes, of which the number is identical with that of photovoltaic cells in parallel connection. Two photovoltaic cables are respectively connected to the two ends of the diode string. The thermistor temperature measurement circuit module is respectively connected to lines of the diodes in the diode string, and the output end is connected with the MCU microprocessor which is connected with a control host outside the photovoltaic conjunction box through RFID. The temperature measurement circuit of a thermistor is used to detect the temperature of the diode string, and an MCU microprocessor with monitoring function is integrated in the photovoltaic conjunction box. When the thermistor detects that the temperature of the diodes is too high, the abnormal state monitored is transmitted to the control host through RFID to realize the real-time monitoring the temperature of the photovoltaic conjunction box.

Description

Remote monitoring type photovoltaic junction box based on thermistor temperature detecting and RFID transmission
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 thermistor temperature detecting and RFID 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, with the conducting strip of diode, is arranged in installation cavity.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 when working, can cause a large amount of hot stacks, produce higher temperature, continuous rising along with diode temperature, resistance in diode will constantly increase, cause diode to produce more heat, thereby waste more electric power resource, enter vicious cycle.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.
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 thermistor temperature detecting and RFID transmission, 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 thermistor temperature detecting and RFID 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, thermistor temperature detecting circuit module and MCU microprocessor; Described diode string comprises the diode of a plurality of 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 thermistor temperature detecting circuit module is connected on the circuit of each diode in diode string, and for detecting the temperature of each diode, the output terminal of described thermistor temperature detecting circuit module connects MCU microprocessor; Described MCU microprocessor connects the main control system outside photovoltaic junction box by RFID.
Useful technique effect of the present utility model is:
The utility model is used the temperature measurement circuit of thermistor to detect the temperature of diode string, and the integrated MCU microprocessor with monitoring function, at thermistor, diode temperature detected when too high, the abnormality monitoring is transferred to main control system by RFID, has realized the real-time monitoring of photovoltaic junction box temperature.
Advantage of the present utility model will provide in embodiment description partly below, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
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, thermistor temperature detecting circuit module 3 and MCU microprocessor 4 in the cavity forming between upper cover and base.Diode string 1 comprises the diode of a plurality of 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.A plurality of thermistor temperature detecting circuit modules 3 are connected on the circuit of each diode in diode string 1, and for detecting the temperature of each diode, the output terminal of thermistor temperature detecting circuit module 3 connects MCU microprocessor 4.MCU microprocessor 4 connects the output terminal of each thermistor temperature detecting circuit module 3, and the output terminal of MCU microprocessor connects the main control system 6 outside photovoltaic junction box by RFID.At thermistor temperature detecting circuit module 3, this diode temperature detected when too high, the abnormal data of acquisition is transferred out to main control system 6 with RFID by MCU microprocessor 4, realize the temperature remote real-time monitoring of photovoltaic junction box.Thermistor temperature detecting circuit module 3 described in the utility model and MCU microprocessor 4, main control system 6 are commercial goods.
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 domain of the present utility model.

Claims (1)

1. the remote monitoring type photovoltaic junction box based on thermistor temperature detecting and RFID 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), thermistor temperature detecting circuit module (3) and MCU microprocessor (4); Described diode string (1) comprises the diode of a plurality of 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 thermistor temperature detecting circuit module (3) is connected on the circuit of each diode in diode string (1), and for detecting the temperature of each diode, the output terminal of described thermistor temperature detecting circuit module (3) connects MCU microprocessor (4); Described MCU microprocessor (4) connects the main control system (6) outside photovoltaic junction box by RFID.
CN201420155242.3U 2014-04-01 2014-04-01 Remote monitoring type photovoltaic conjunction box based on thermistor temperature measurement and RFID transmission Expired - Fee Related CN203824668U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420155242.3U CN203824668U (en) 2014-04-01 2014-04-01 Remote monitoring type photovoltaic conjunction box based on thermistor temperature measurement and RFID transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420155242.3U CN203824668U (en) 2014-04-01 2014-04-01 Remote monitoring type photovoltaic conjunction box based on thermistor temperature measurement and RFID transmission

Publications (1)

Publication Number Publication Date
CN203824668U true CN203824668U (en) 2014-09-10

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CN (1) CN203824668U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103884444A (en) * 2014-04-01 2014-06-25 苏州边枫电子科技有限公司 Remote monitoring type photovoltaic junction box based on thermistor temperature measurement and RFID transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103884444A (en) * 2014-04-01 2014-06-25 苏州边枫电子科技有限公司 Remote monitoring type photovoltaic junction box based on thermistor temperature measurement and RFID transmission

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EXPY Termination of patent right or utility model
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Granted publication date: 20140910

Termination date: 20150401