CN203827267U - Over-temperature state indication type photovoltaic junction box based on voltage measurement - Google Patents
Over-temperature state indication type photovoltaic junction box based on voltage measurement Download PDFInfo
- Publication number
- CN203827267U CN203827267U CN201420103270.0U CN201420103270U CN203827267U CN 203827267 U CN203827267 U CN 203827267U CN 201420103270 U CN201420103270 U CN 201420103270U CN 203827267 U CN203827267 U CN 203827267U
- Authority
- CN
- China
- Prior art keywords
- diodes
- diode
- circuit module
- photovoltaic
- junction box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model discloses an over-temperature state indication type photovoltaic junction box based on voltage measurement. The junction box comprises a diode string, photovoltaic cable interfaces, voltage measurement circuit modules and an LED over-temperature state indication circuit module. The diode string comprises multiple diodes which are connected in series in the same direction, the number of the diodes is the same with that of photovoltaic batteries, and the diodes are correspondingly connected in parallel with the photovoltaic batteries. The two photovoltaic cable interfaces are respectively connected with the two ends of the diode string. The voltage measurement circuit modules are respectively connected in parallel with all the diodes in the diode string and used for detecting voltage flowing through all the diodes, and the output ends are connected with the LED over-temperature state indication circuit module. The LED over-temperature state indication circuit module is connected with the output ends of the voltage measurement circuit modules and comprises multiple LED indication diodes which are installed on the surface of an upper cover of the photovoltaic junction box. When voltage of the two ends of the diodes is oversized after being detected by the voltage measurement circuits, the over-temperature abnormal state of the diodes is indicated by LED lamps via controlling so that temperature monitoring and alarm of the photovoltaic junction box are 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 over-temperature condition indicator type photovoltaic junction box based on surveying voltage.
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 it is particularly important that overheat protector and warning seem.
Utility model content
For the problems referred to above of existing photovoltaic junction box, applicant, through Improvement, provides a kind of over-temperature condition indicator type photovoltaic junction box based on surveying voltage, realizes overheat protector and the warning of photovoltaic junction box.
The technical solution of the utility model is as follows:
A kind of over-temperature condition indicator type photovoltaic junction box based on surveying voltage, 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 potential circuit module and LED over-temperature condition indicating circuit module; 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 potential circuit module respectively with diode string in each diodes in parallel, for detecting the voltage at each diode two ends, the output of described survey potential circuit module connects LED over-temperature condition indicating circuit module; Described LED over-temperature condition indicating circuit module connects the output of surveying potential circuit module, comprises multiple LED instruction diodes, and described LED instruction diode is arranged on the upper cap surface of photovoltaic junction box.
Useful technique effect of the present utility model is:
The utility model uses the voltage of surveying potential circuit detection diode string two ends, increase on terminal box surface the LED being used to indicate, in the time that survey potential circuit detects the overtension at diode two ends, there is the state of temperature abnormality in the LED lamp instruction diode that starts terminal box surface, has realized monitoring temperature and the warning of photovoltaic junction box.
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 potential circuit module 3 and LED over-temperature condition indicating circuit module 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 potential circuit modules 3 respectively with diode string 1 in each diodes in parallel, for detecting the electric current at each diode two ends, the output of surveying potential circuit module 3 connects LED over-temperature condition indicating circuit module 4.LED over-temperature condition indicating circuit module 4 connects the output of surveying potential circuit module 3, comprises multiple LED instruction diodes, and LED instruction diode is arranged on the upper cap surface of photovoltaic junction box.In the time that survey potential circuit module 3 detects the overtension at two ends of diode, illustrate that this diode temperature is too high, corresponding LED instruction diode is lighted, and indicates which diode to cross temperature abnormality, realizes monitoring temperature and the warning of photovoltaic junction box.Survey potential circuit module 3 described in the utility model and LED over-temperature condition indicating circuit module 4 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 range of the present utility model.
Claims (1)
1. the over-temperature condition indicator type photovoltaic junction box based on surveying voltage, 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 potential circuit module (3) and LED over-temperature condition indicating circuit module (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 potential circuit module (3) respectively with diode string (1) in each diodes in parallel, for detecting the voltage at each diode two ends, the output of described survey potential circuit module (3) connects LED over-temperature condition indicating circuit module (4); Described LED over-temperature condition indicating circuit module (4) connects the output of surveying potential circuit module (3), comprises multiple LED instruction diodes, and described LED instruction diode is arranged on the upper cap surface of photovoltaic junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420103270.0U CN203827267U (en) | 2014-03-07 | 2014-03-07 | Over-temperature state indication type photovoltaic junction box based on voltage measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420103270.0U CN203827267U (en) | 2014-03-07 | 2014-03-07 | Over-temperature state indication type photovoltaic junction box based on voltage measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203827267U true CN203827267U (en) | 2014-09-10 |
Family
ID=51482726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420103270.0U Expired - Fee Related CN203827267U (en) | 2014-03-07 | 2014-03-07 | Over-temperature state indication type photovoltaic junction box based on voltage measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203827267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888059A (en) * | 2014-03-07 | 2014-06-25 | 苏州边枫电子科技有限公司 | Over-temperature state indication type photovoltaic terminal box based on voltage measurement |
-
2014
- 2014-03-07 CN CN201420103270.0U patent/CN203827267U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888059A (en) * | 2014-03-07 | 2014-06-25 | 苏州边枫电子科技有限公司 | Over-temperature state indication type photovoltaic terminal box based on voltage measurement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103884444A (en) | Remote monitoring type photovoltaic junction box based on thermistor temperature measurement and RFID transmission | |
| CN103888058A (en) | Over-temperature state indication type photovoltaic terminal box based on current measurement | |
| CN203350386U (en) | Photovoltaic inverter multi-path input reverse-connection detection circuit with self-diagnosis function | |
| CN203827268U (en) | Over-temperature state indication type photovoltaic junction box based on Hall sensor | |
| CN203827267U (en) | Over-temperature state indication type photovoltaic junction box based on voltage measurement | |
| CN203827269U (en) | Over-temperature state indication type photovoltaic junction box based on current measurement | |
| CN203827271U (en) | Over-temperature state indication type photovoltaic junction box based on semiconductor temperature measurement | |
| CN103888070A (en) | Remote monitor type photovoltaic connecting box based on voltage detection and single-wire communication protocol | |
| CN203827266U (en) | Over-temperature state indication type photovoltaic junction box based on thermistor temperature measurement | |
| CN203827270U (en) | Over-temperature state indication type photovoltaic junction box based on far-infrared thermal sensors | |
| CN203827274U (en) | Remote monitoring type photovoltaic junction box based on semiconductor temperature measurement and WIFI transmission | |
| CN204270127U (en) | A kind of power station turbine-generator units display control device | |
| CN203827280U (en) | Remote monitoring type photovoltaic junction box based on Hall sensor and WIFI transmission | |
| CN203827278U (en) | Remote monitoring type photovoltaic junction box based on measuring current and power wire carrier | |
| CN203824668U (en) | Remote monitoring type photovoltaic conjunction box based on thermistor temperature measurement and RFID transmission | |
| CN103888061A (en) | Remote monitor type photovoltaic connecting box based on semiconductor temperature measurement and FM transmission | |
| CN203827277U (en) | Remote monitoring type photovoltaic junction box based on semiconductor temperature measurement and RFID transmission | |
| CN103888062A (en) | Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves | |
| CN103888055A (en) | Over-temperature state indication type photovoltaic junction box based on thermistor temperature measurement | |
| CN203827276U (en) | Remote monitoring type photovoltaic junction box based on semiconductor temperature measurement and one-way communication protocol | |
| CN103888056A (en) | Over-temperature state indication type photovoltaic junction box based on Hall sensor | |
| CN203827279U (en) | Remote monitoring type photovoltaic junction box based on thermistor temperature measurement and one-way communication protocol | |
| CN203827275U (en) | Remote monitoring type photovoltaic junction box based on Hall sensor and one-way communication protocol | |
| JP5393530B2 (en) | Solar power plant | |
| CN103888059A (en) | Over-temperature state indication type photovoltaic terminal box based on voltage measurement |
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: 20150307 |
|
| EXPY | Termination of patent right or utility model |