CN205811954U - Photovoltaic junction box and the wiring system of photovoltaic module - Google Patents
Photovoltaic junction box and the wiring system of photovoltaic module Download PDFInfo
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- CN205811954U CN205811954U CN201620780140.XU CN201620780140U CN205811954U CN 205811954 U CN205811954 U CN 205811954U CN 201620780140 U CN201620780140 U CN 201620780140U CN 205811954 U CN205811954 U CN 205811954U
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- photovoltaic
- module
- junction box
- box
- photovoltaic module
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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
This utility model relates to the wiring system of photovoltaic junction box and photovoltaic module, wherein photovoltaic junction box, including box body and be located at the anode connection terminal of box portion outside, negative pole connects end, four assemblies connect ends and the bypass diode module of inside or intelligent power management module: this utility model avoids because of the rosette assembly that loosely cause bonding with photovoltaic module problem of inefficacy during generating uses；Avoid simultaneously component operation process once occur possessing partly or completely photovoltaic module cover the work of hot spot effect bypass diode occurs after the heat that produces do not distribute not go out and cause rosette itself to be damaged, the heat that simultaneously it also avoid junction box has influence on assembly backboard and glass；Assembly generated output can also be optimized.
Description
Technical field
This utility model relates to the wiring system of photovoltaic junction box and photovoltaic module, belongs to photovoltaic module splicing application.
Background technology
The photovoltaic module of traditional mode, rosette integrated bypass diode is pasted onto the back side of photovoltaic module, bypasses two poles
Pipe is connected in parallel on above the battery strings of photovoltaic module, due to the existence of parallel circuit, as long as diode and battery strings have a road to be logical
The existence on road, whole circuit is exactly logical, it is impossible to determining the fault of diode or battery strings, existing market is installed and put into simultaneously
All there is the problem of the quality of the state having no idea to check each assembly in the photovoltaic module used, can only monitor each
The operating mode of the array of electric light photovoltaic assembly.
Diode produces heat, and the temperature in rosette region can rise rapidly, causes the temperature of local, assembly junction box position
Degree rises sharply, and (glass temperature such as assembly raises, and local can produce the stress of inherence, has and bursts apart to bring potential risks to assembly
Risk；Temperature is the highest runs into unexpected rainfall, and glass temperature is die-offed, and also has the risk burst apart；What winter, local was not melted is long-pending
Snow, is now the time period that the probability of bypass diode work is the highest, and the assembly glass temperature of rosette position is higher, top
The temperature of the snow water melted is close to 0 degree, abnormally dangerous).
The bypass diode majority of traditional assembly junction box is all in a welding manner, for the performance that assembly is overall,
Most assembly junction boxes use casting glue that the mode that junction box entirety embedding is lived is installed rosette.Connecing in the market
Line box also there is bypass diode also have the mode of a small amount of clamping that diode is installed, the most only on clamping is convenient, do literary composition
Chapter, therefore also exists contact area little, and contact resistance is big, and between pin and terminal, contact area is little, local when big electric current passes through
Temperature rise big, adding bypass diode work is the heat produced, and the working condition for diode is unfavorable.
Utility model content
Technical problem to be solved in the utility model is for the deficiencies in the prior art, it is provided that a kind of photovoltaic junction box and
The wiring system of photovoltaic module, it is to avoid because the rosette assembly that loosely cause bonding with photovoltaic module loses during generating uses
The problem of effect, avoids component operation process simultaneously and once occurs that the appearance of covering possessing partly or completely photovoltaic module bypasses
The heat produced after diode operation does not distributes not go out and causes rosette itself to be damaged, and it also avoid the heat of junction box simultaneously
Amount has influence on assembly glass, because the internal stress after glass local heating causes glass to burst；If using Intelligent electric source capsule
If reason module, eliminating the use of diode, use switch in place diode, the heat produced during switch Guan Bi ON operation is non-
The fewest, essentially without there being temperature rise, thoroughly solve current photovoltaic module and use the circuit knot of bypass diode protection battery strings
Structure, it is to avoid the heat after junction box protection bypass start-up produces.This utility model solves the technical side of above-mentioned technical problem
Case is as follows: a kind of photovoltaic junction box, including box body and be located at the anode connection terminal of box portion outside, negative pole connects end, four assemblies
Connect end, and at least one bypass diode module or intelligent power management module；
Described anode connection terminal, for being connected with positive connector by positive wire；
Described negative pole connects end, for being connected with negative pole adapter by cathode conductor；
Described four assemblies connect the inside and outside of end connection rosette, and assembly connects end one end towards tray interior
For being connected with bypass diode module or intelligent power management module；Described assembly connects end towards box portion outside
End is for being connected with photovoltaic module by connection cable.
The beneficial effects of the utility model are: have four cable outputs, and four cables of assembly below photovoltaic junction box
Joint one_to_one corresponding, left and right each cable output, corresponding battery component both positive and negative polarity output, the electric power for photovoltaic module exports
Connect with assembly during assembly in-site installation, form square formation, apply during system building.
On the basis of technique scheme, this utility model can also do following improvement.
Further, all described bypass diodes arrange tray interior by industry control binding post.
Using above-mentioned further scheme to provide the benefit that, bypass diode installs the traditional industry control binding post used,
The mode using screw to compress connects diode, it is ensured that the reliability of connection, ensures will not locally produce when big electric current passes through simultaneously
Heat amount.Simultaneously during convenient maintenance, if it find that the problem of diode, it is simple to change, convenient and swift.Change traditional components one
After denier puts into power station use, Primary Component (such as bypass diode) does not has means check its operating mode and do not have suitable means to go more
The awkward situation changed.
Further, the corresponding industry control binding post of each described bypass diode, described industry control binding post uses spiral shell
The mode that silk compresses fixes described bypass diode.
Use above-mentioned further scheme to provide the benefit that, it is ensured that the reliability of connection, ensure when big electric current passes through simultaneously
Will not locally produce heat.Simultaneously during convenient maintenance, if it find that the problem of diode, it is simple to change convenient and swift.Change
After traditional components once puts into power station use, Primary Component (such as bypass diode) does not has means check its operating mode and do not have properly
Means go change awkward situation.
Further, also include that six cable terminals, six described cable terminals are connected end and four assemblies with positive and negative respectively
Connect end to be connected.
Further, described cable terminal is fixed in box body by cable locking block.
Further, described intelligent power management module includes:
MCU, is used for the Guan Bi of Data Control three switch according to the transmission of voltage analog measurement module and opens；
Voltage analog measurement module, the working condition of all battery strings in monitoring photovoltaic module in real time, and by work
The situation data of work are transferred to MCU；
Three switches, are respectively used to the control according to MCU and corresponding battery strings are turned on or isolated.
Further, described intelligent power management module also includes:
Network management module connects for external network, and intelligent power management module and outside communication, in real time by photovoltaic
The working condition of assembly feeds back to control centre, it is simple to the supervision of the comprehensive operating mode of photovoltaic plant；
Power management module is for powering for intelligent power ducting module；
Power optimization module coordinates with the program optimization of MCU, the generating state of the regulation each battery strings of photovoltaic module.
The technical scheme that this utility model solves above-mentioned technical problem is as follows: the wiring system of a kind of photovoltaic module, including
Line transfer box that two are arranged on photovoltaic component back plate and photovoltaic junction box as above；
Two described line transfer boxes are respectively and independently arranged at the photovoltaic module back side, described line transfer box input/output terminal
It is connected with photovoltaic module and photovoltaic junction box respectively；
Four assemblies of described photovoltaic junction box connect the end outfan respectively with two line transfer boxes and are connected.
The beneficial effects of the utility model are: solve the potential risks of current traditional components.Protection bypass diode
And electrical power transmission system can individual be respectively and independently separated, it is simple to the inspection of each several part operating mode and the eliminating of fault.Owing to this is
Not having the constraint of cable in system on the backboard of photovoltaic module, it is simple to install, after band array installs, unified electric power of installing exports
System.The construction on-the-spot for assembly is provided convenience.The rosette being provided with bypass protection diode separates with assembly backboard
Design, it is to avoid because the rosette insecure assembly that cause bonding with assembly is generating electricity the inefficacy during using, simultaneously avoid
During component operation, once occur in that local or the covering of whole assembly (as tree shade, the landing of birds, the cloud of sky,
Accumulated snow that the local in winter is not melted etc.), bypass diode starts, and protection battery strings does not occur hot spot effect.
Further, described photovoltaic junction box is fixed on the frame of photovoltaic module.
Using above-mentioned further scheme to provide the benefit that, rosette is independently arranged on the frame being fixed on photovoltaic module,
Even if bypass diode work in time, the heat of generation does not interferes with assembly itself yet
Further, described photovoltaic junction box part is fixed on the frame of photovoltaic module, the remainder of photovoltaic junction box
Unsettled setting.
Using above-mentioned further scheme to provide the benefit that, junction box part is arranged on above aluminum frame, and bottom is unsettled, logical
Distributing of the convection current of wind and air also favourable heat with rosette own, reduces the temperature of terminal block housings, prevents temperature too high
Have influence on the normal work of bypass diode, avoid current existing photovoltaic component terminal box simultaneously and be bonded in module backside temperature
On assembly backboard and the impact of glass after raising.
Further, the aluminum frame of described photovoltaic module is highly heat-conductive material, it is simple to distributing of photovoltaic junction box internal heat.
Use above-mentioned further scheme to provide the benefit that, use highly heat-conductive material (such as: aluminum etc.) to make frame, be wiring
The heat of box can spread in time, does not interferes with the work of photovoltaic module.
Further, described circuit switching box includes two outfans, each outfan respectively with an assembly of rosette
Connect end to be connected.
Further, two outfans of described line transfer box include cathode output end and cathode output end.
Above-mentioned further scheme is used to provide the benefit that, in order to avoid the when that assembly being built, asking occurs in circuit connection
Topic, spy is designed to each one of male and female head, and the most whole assembly is equipped with the outfan of four-way power supply line, the wherein leftmost side and the rightmost side
Cable output end be long-term work cable output end, middle two outfans be in order to protect battery strings occur capture-effect or
During the fault of a string battery strings of person own, it is connected to protect the circuit of the diode pin of battery strings, centre under nominal situation
Two cable output ends are inoperative, when only the operating mode of assembly goes wrong, just work during bypass diode work, protection
Corresponding battery strings occurs without hot plate effect and damages assembly.
Further, the internal convergent belt using large terminal to export with photovoltaic module of described circuit switching box is connected；Described
Fix by the way of overall clamping from top to bottom between large terminal and convergent belt.
Use above-mentioned further scheme to provide the benefit that, by overall snap fit, make convergent belt under external force
Can contact on surface fully with large terminal, increase contact area, and ensure that the reliability that conductive body contact conducts electricity.
Accompanying drawing explanation
Fig. 1 is the photovoltaic junction box structural representation described in this utility model embodiment 1；
Fig. 2 is the photovoltaic junction box internal structure schematic diagram described in this utility model embodiment 2；
Fig. 3 is the photovoltaic junction box internal structure schematic diagram described in this utility model embodiment 3；
Fig. 4 is the wiring system connection diagram of the photovoltaic module described in this utility model embodiment 1；
Fig. 5 be the photovoltaic module described in embodiment 1 wiring system in photovoltaic module back view；
Fig. 6 be the photovoltaic module described in this utility model embodiment 2 wiring system in the structural representation of circuit interconnecting device
Figure；
Fig. 7 be the photovoltaic module described in this utility model embodiment 3 wiring system in the structure of a circuit switching box
Schematic diagram；
Fig. 8 is the wiring system structural representation of the photovoltaic module described in this utility model embodiment 3；
Fig. 9 is the structure schematic diagram of the photovoltaic module described in this utility model embodiment 3；
Figure 10 be the photovoltaic module described in this utility model embodiment 3 wiring system in the knot of another circuit switching box
Structure schematic diagram.
In accompanying drawing, the list of parts representated by each label is as follows:
101, box body, 102, anode connection terminal, 103, negative pole connect end, 104, assembly connect end, 105, bypass diode
Module, 106, industry control binding post, 107, cable terminal, 108, cable locking block, 109, MCU, 110, voltage analog measurement
Module, 111, switch, 112, network management module, 113, power management module, 114, power optimization module, 10, photovoltaic wiring
Box, 20, line transfer box, 30, photovoltaic module, 201, outfan, 202, positive pole electric power lead-out terminal, 203, the output of negative pole electric power
Terminal.
Detailed description of the invention
Being described principle of the present utility model and feature below in conjunction with accompanying drawing, example is served only for explaining this practicality
Novel, it is not intended to limit scope of the present utility model.
As shown in Figure 1, 2, for the photovoltaic junction box described in this utility model embodiment 1, including box body 101 be located at box body
Outside anode connection terminal 102, negative pole connect 103, four assemblies of end and connect end 104, and at least one bypass diode module
105 or intelligent power management module；
Described anode connection terminal 102, for being connected with positive connector by positive wire；
Described negative pole connects end 103, for being connected with negative pole adapter by cathode conductor；
Described four assemblies connect end 104 and connect the inside and outside of rosette, and assembly connects end towards tray interior
One end is for being connected with bypass diode module or intelligent power management module；Described assembly connects end towards box portion outside
One end for by connect cable be connected with photovoltaic module.
It is internal that all described bypass diodes 105 arrange box body 101 by industry control binding post 106.
The corresponding industry control binding post 106 of each described bypass diode 105, described industry control binding post 106 uses
The mode that screw compresses fixes described bypass diode 105.
Also include that six cable terminals 107, six described cable terminals 107 are connected end and four assemblies with positive and negative respectively
Connect end to be connected.Described cable terminal 107 is fixed in box body 101 by cable locking block 108.
As it is shown on figure 3, for the photovoltaic junction box described in this utility model embodiment 2, on the basis of embodiment 1, described
Also including Intelligent management module in box body, described Intelligent management module includes:
MCU109, is used for the Guan Bi of Data Control three switch according to the transmission of voltage analog measurement module and opens；
Voltage analog measurement module 110, the working condition of all battery strings in monitoring photovoltaic module in real time, and will
Working condition data are transferred to MCU109；
Three switches 111, are respectively used to the control according to MCU109 and corresponding battery strings are turned on or isolated.
Described Intelligent management module also includes network management module 112, power management module 113 and power optimization module
114；
Network management module 112 connects for external network, and intelligent power management module and outside communication, in real time by light
The working condition of photovoltaic assembly feeds back to control centre, it is simple to the supervision of the comprehensive operating mode of photovoltaic plant；
Power management module 113 is for powering for intelligent power ducting module；
Power optimization module 114 coordinates with the program optimization of MCU, the generating state of the regulation each battery strings of photovoltaic module.
The importing of Intelligent management module, (bypass protection is after assembly goes wrong to substitute the pattern of traditional bypass protection
Passive protection pattern), change into the operational mode of active defense, the intellectualized module in rosette is provided with MCU, voltage-mode
Analog quantity measurement module, under the control of MCU, the working condition of each battery strings in the real-time monitor component of intellectualized module, once
Voltage occurs abnormal, and MCU by output order, will appear from the battery strings protection switch of problem and closes that (switch herein can be with passing
The relay of system, it would however also be possible to employ mos on-off control), electric current directly turns on, not by the battery strings gone wrong, it is to avoid change
There is hot spot effect in Battery pack string, affects the life-span of assembly.Guarantee the operation safety of whole system, intelligent management module simultaneously
Possess wireless communication function, the operating mode of real-time monitor component, and by real-time data transmission to data center, it is simple to management personnel sentence
The ruuning situation at power-off station.
As shown in Figure 4, for the wiring system of the photovoltaic module described in this utility model embodiment 1, it is arranged on including two
Line transfer box 20 on photovoltaic component back plate and photovoltaic junction box as above 10；
Two described line transfer boxes 20 are respectively and independently arranged at photovoltaic module 30 back side, and described line transfer box 20 inputs
Outfan is connected with photovoltaic module 30 and photovoltaic junction box 10 respectively；
Four assemblies of described photovoltaic junction box 10 connect the end outfan respectively with two line transfer boxes 20 and are connected.
As it is shown in figure 5, for photovoltaic module 30 back view in the wiring system of the photovoltaic module described in embodiment 1.
Described photovoltaic junction box 10 is fixed on the frame of photovoltaic module 30.
Described photovoltaic junction box 10 part is fixed on the frame of photovoltaic module 30, and the remainder of photovoltaic junction box 10 hangs
Empty setting.
The frame of described photovoltaic module 30 uses highly heat-conductive material to make, and uses aluminum frame in the present embodiment.
As shown in Figure 6, for the wiring system of the photovoltaic module described in this utility model embodiment 2, on the basis of embodiment 1
On, described circuit switching box 20 includes two outfans 201, and each outfan 201 is connected with an assembly of rosette respectively
End is connected.
Said two outfan 201 includes cathode output end and cathode output end.
As shown in Fig. 7,8,9,10, for the wiring system of the photovoltaic module described in this utility model embodiment 3, in embodiment
On the basis of 1 or 2, the structural representation of circuit switching box, one of them circuit switching box also includes positive pole electric power lead-out terminal
202, another circuit switching box also includes negative pole electric power lead-out terminal 203.
The internal convergent belt using large terminal to export with photovoltaic module of described circuit switching box 20 is connected；Described large terminal
And fix by the way of overall clamping from top to bottom between convergent belt.
Cable system is the blood of economic development, concerning state build can with safety problem, first it is contemplated that
Safe and reliable.This utility model can solve the potential risks of current conventional photovoltaic assembly (does not has suitable means to judge
The working condition of assembly, and the situation of Primary Component, such as bypass diode and the operating mode etc. of battery strings).
The Circuits System of wiring system of the present utility model and component internal battery strings is separable, and power station can be according to power station
Ruuning situation arranges by oneself and periodically checks work, wiring system and assembly is disconnected, and wiring system uses program design
The special somascope of rosette, the present situation of each diode, holding of break-make, the pressure drop of forward and instantaneous high current can be tested
Loading capability.The photovoltaic module opened from system break, the circuit of self is independent battery system, it is possible to use supporting for the program
Special inspecting equipment, check each battery strings of assembly duty.Photovoltaic plant can according to the operation plan arrangement of self,
The lowest assembly in power station is carried out inspection one by one and maintenance.For coordinating enforcement of the present utility model, design
Exploitation rosette intelligent checking system, including the universal performance of bypass diode, forward conduction, reversely ends, conduction voltage drop etc.
Etc. characteristic, design component performance checking instrument simultaneously, detection power generation performance under certain light conditions, and the trend etc. of decay
Deng.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in guarantor of the present utility model
Within the scope of protecting.
Claims (14)
1. a photovoltaic junction box, it is characterised in that include box body and be located at the anode connection terminal of box portion outside, negative pole connection
End, four assemblies connect ends, and at least one bypass diode module or intelligent power management module；
Described anode connection terminal, for being connected with positive connector by positive wire；
Described negative pole connects end, for being connected with negative pole adapter by cathode conductor；
Described four assemblies connect the inside and outside of end connection rosette, and assembly connection end is used for towards one end of tray interior
It is connected with bypass diode module or intelligent power management module；Described assembly connects end one end use towards box portion outside
In being connected with photovoltaic module by connection cable.
A kind of photovoltaic junction box the most according to claim 1, it is characterised in that all described bypass diodes pass through industry control
Binding post arranges tray interior.
A kind of photovoltaic junction box the most according to claim 2, it is characterised in that corresponding one of each described bypass diode
Industry control binding post, the mode that described industry control binding post uses screw to compress fixes described bypass diode.
4. according to a kind of photovoltaic junction box described in any one of claim 1-3, it is characterised in that also include six cut cables
Son, six described cable terminals are connected end with positive and negative respectively and four assemblies connect ends and are connected.
A kind of photovoltaic junction box the most according to claim 4, it is characterised in that described cable terminal passes through cable locking block
It is fixed in box body.
A kind of photovoltaic junction box the most according to claim 1, it is characterised in that described intelligent power management module includes:
MCU, is used for the Guan Bi of Data Control three switch according to the transmission of voltage analog measurement module and opens；
Voltage analog measurement module, the working condition of all battery strings in monitoring photovoltaic module in real time, and by work feelings
Condition data are transferred to MCU；
Three switches, are respectively used to the control according to MCU and corresponding battery strings are turned on or isolated.
A kind of photovoltaic junction box the most according to claim 6, it is characterised in that described intelligent power management module is also wrapped
Include:
Network management module connects for external network, and intelligent power management module and outside communication, in real time by photovoltaic module
Working condition feed back to control centre；
Power management module is for powering for intelligent power ducting module；
Power optimization module coordinates with the program optimization of MCU, the generating state of the regulation each battery strings of photovoltaic module.
8. the wiring system of a photovoltaic module, it is characterised in that include that two circuits being arranged on photovoltaic component back plate turn
Change box and the photovoltaic junction box as described in any one of claim 1-7；
Two described line transfer boxes are respectively and independently arranged at the photovoltaic module back side, and described line transfer box input/output terminal is respectively
It is connected with photovoltaic module and photovoltaic junction box；
Four assemblies of described photovoltaic junction box connect the end outfan respectively with two line transfer boxes and are connected.
The wiring system of a kind of photovoltaic module the most according to claim 8, it is characterised in that described photovoltaic junction box is fixed
On the frame of photovoltaic module.
The wiring system of a kind of photovoltaic module the most according to claim 9, it is characterised in that described photovoltaic junction box portion
Divide and be fixed on the frame of photovoltaic module, the unsettled setting of remainder of photovoltaic junction box.
The wiring system of 11. a kind of photovoltaic modulies according to claim 10, it is characterised in that the limit of described photovoltaic module
Frame uses highly heat-conductive material to make.
The wiring system of 12. a kind of photovoltaic modulies according to claim 8, it is characterised in that described circuit switching box bag
Including two outfans, each outfan is connected end with an assembly of photovoltaic junction box respectively and is connected.
The wiring system of 13. a kind of photovoltaic modulies according to claim 12, it is characterised in that described line transfer box
Two outfans include cathode output end and cathode output end.
The wiring system of 14. a kind of photovoltaic modulies described in-13 any one according to Claim 8, it is characterised in that described circuit
The internal convergent belt using large terminal to export with photovoltaic module of interconnecting device is connected；Between described large terminal and convergent belt by by
The mode of up to lower overall clamping is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620780140.XU CN205811954U (en) | 2016-07-22 | 2016-07-22 | Photovoltaic junction box and the wiring system of photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620780140.XU CN205811954U (en) | 2016-07-22 | 2016-07-22 | Photovoltaic junction box and the wiring system of photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205811954U true CN205811954U (en) | 2016-12-14 |
Family
ID=57508355
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620780140.XU Expired - Fee Related CN205811954U (en) | 2016-07-22 | 2016-07-22 | Photovoltaic junction box and the wiring system of photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205811954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059487A (en) * | 2016-07-22 | 2016-10-26 | 褚敬堂 | Photovoltaic connection box and photovoltaic assembly connection system |
-
2016
- 2016-07-22 CN CN201620780140.XU patent/CN205811954U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059487A (en) * | 2016-07-22 | 2016-10-26 | 褚敬堂 | Photovoltaic connection box and photovoltaic assembly connection system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20210722 |