CN103888058A - Over-temperature state indication type photovoltaic terminal box based on current measurement - Google Patents
Over-temperature state indication type photovoltaic terminal box based on current measurement Download PDFInfo
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- CN103888058A CN103888058A CN201410083340.5A CN201410083340A CN103888058A CN 103888058 A CN103888058 A CN 103888058A CN 201410083340 A CN201410083340 A CN 201410083340A CN 103888058 A CN103888058 A CN 103888058A
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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 an over-temperature state indication type photovoltaic terminal box based on current measurement. The over-temperature state indication type photovoltaic terminal box comprises a diode string, photovoltaic cable interfaces, current measurement circuit modules and an LED over-temperature state indication circuit module. The diode string comprises a plurality of diodes which are connected in series in the same direction, the number of the diodes is the same as the number of photovoltaic batteries, and the diodes are corresponding connected with the photovoltaic batteries in parallel. The two photovoltaic cable interfaces are connected to the two ends of the diode string respectively. Each current measurement circuit module is connected to the corresponding diode in the diode string in series, and the output ends of the current measurement circuit modules 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 current measurement circuit modules and comprises a plurality of LED indication diodes arranged on the surface of an upper cover of the photovoltaic terminal box. When current measurement circuits detect that the current passing through the diodes is excessively high, the LED indication diodes are controlled not to be in the over-temperature abnormal state, and monitoring and warning of the temperature of the photovoltaic terminal box are 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 over-temperature condition indicator type photovoltaic junction box based on surveying electric current.
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 it is particularly important that overheat protector and warning seem.
Summary of the invention
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 electric current, realizes overheat protector and the warning of photovoltaic junction box.
Technical scheme of the present invention is as follows:
A kind of over-temperature condition indicator type photovoltaic junction box based on surveying electric current, 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 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 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 LED over-temperature condition indicating circuit module; Described LED over-temperature condition indicating circuit module connects the output of surveying current circuit module, comprises multiple LED indication diodes, and described LED indication diode is arranged on the upper cap surface of photovoltaic junction box.
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, increase on terminal box surface the LED being used to indicate, detect and flow through diode current when too high surveying current circuit, there is the state of temperature abnormality in the LED lamp indication diode that starts terminal box surface, has realized monitoring temperature and the warning of photovoltaic junction box.
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 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 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 LED over-temperature condition indicating circuit module 4.LED over-temperature condition indicating circuit module 4 connects the output of surveying current circuit module 3, comprises multiple LED indication diodes, and LED indication diode is arranged on the upper cap surface of photovoltaic junction box.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, corresponding LED indication diode is lighted, and indicates which diode to cross temperature abnormality, realizes monitoring temperature and the warning of photovoltaic junction box.Survey current circuit module 3 of the present invention and LED over-temperature condition indicating circuit module 4 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 over-temperature condition indicator type photovoltaic junction box based on surveying electric current, 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 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 current circuit module (3) is connected with the each diode in diode string (1) respectively, and for detecting the electric current that flows through each diode, the output of described survey current 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 current circuit module (3), comprises multiple LED indication diodes, and described LED indication diode is arranged on the upper cap surface of photovoltaic junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083340.5A CN103888058A (en) | 2014-03-07 | 2014-03-07 | Over-temperature state indication type photovoltaic terminal box based on current measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083340.5A CN103888058A (en) | 2014-03-07 | 2014-03-07 | Over-temperature state indication type photovoltaic terminal box based on current measurement |
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| CN103888058A true CN103888058A (en) | 2014-06-25 |
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| CN201410083340.5A Pending CN103888058A (en) | 2014-03-07 | 2014-03-07 | Over-temperature state indication type photovoltaic terminal box based on current measurement |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228717A (en) * | 2016-03-23 | 2017-10-03 | 太阳能安吉科技有限公司 | Conductor temperature detector |
| US10658833B2 (en) | 2016-03-23 | 2020-05-19 | Solaredge Technologies Ltd. | Conductor temperature detector |
| US11062588B2 (en) | 2016-03-23 | 2021-07-13 | Solaredge Technologies Ltd. | Conductor temperature detector |
| US12034309B2 (en) | 2023-04-10 | 2024-07-09 | Solaredge Technologies Ltd. | Conductor temperature detector |
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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 |
| KR101169289B1 (en) * | 2012-04-17 | 2012-07-30 | (주)대연씨앤아이 | Connector band of solar panel and controlling method thereof |
| 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 |
| CN203827269U (en) * | 2014-03-07 | 2014-09-10 | 苏州边枫电子科技有限公司 | Over-temperature state indication type photovoltaic junction box based on current measurement |
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2014
- 2014-03-07 CN CN201410083340.5A patent/CN103888058A/en active Pending
Patent Citations (6)
| 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 |
| 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 |
| CN203827269U (en) * | 2014-03-07 | 2014-09-10 | 苏州边枫电子科技有限公司 | Over-temperature state indication type photovoltaic junction box based on current measurement |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228717A (en) * | 2016-03-23 | 2017-10-03 | 太阳能安吉科技有限公司 | Conductor temperature detector |
| US10658833B2 (en) | 2016-03-23 | 2020-05-19 | Solaredge Technologies Ltd. | Conductor temperature detector |
| US11062588B2 (en) | 2016-03-23 | 2021-07-13 | Solaredge Technologies Ltd. | Conductor temperature detector |
| US11165241B2 (en) | 2016-03-23 | 2021-11-02 | Solaredge Technologies Ltd. | Conductor temperature detector |
| US11652351B2 (en) | 2016-03-23 | 2023-05-16 | Solaredge Technologies Ltd. | Conductor temperature detector |
| US11721981B2 (en) | 2016-03-23 | 2023-08-08 | Solaredge Technologies Ltd. | Conductor temperature detector |
| US12034309B2 (en) | 2023-04-10 | 2024-07-09 | Solaredge Technologies Ltd. | Conductor temperature detector |
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Application publication date: 20140625 |