CN108599716A - A kind of photovoltaic junction box - Google Patents
A kind of photovoltaic junction box Download PDFInfo
- Publication number
- CN108599716A CN108599716A CN201810668274.6A CN201810668274A CN108599716A CN 108599716 A CN108599716 A CN 108599716A CN 201810668274 A CN201810668274 A CN 201810668274A CN 108599716 A CN108599716 A CN 108599716A
- Authority
- CN
- China
- Prior art keywords
- connecting portion
- photovoltaic junction
- junction box
- box body
- diode
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
-
- 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 invention discloses a kind of photovoltaic junction box, including box body, diode is equipped in box body, further include first connecting portion and second connecting portion, first connecting portion is connected with box body, and the first connection metal is equipped in first connecting portion, and the first connection metal is connected with the first end of diode；The second connection metal is equipped in second connecting portion, the second connection metal is connected with the second end of diode by conducting wire by conducting wire, and first connecting portion can be engaged by clamping with second connecting portion so that first connect metal with second to connect metal connected.First connecting portion is directly connected with the first end of diode, reduces the quantity of conducting wire in photovoltaic junction box, and then reduces the quantity of tie point, reduces the contact resistance in photovoltaic junction box, has achieved the purpose that reduce photovoltaic junction box internal resistance.
Description
Technical field
The present invention relates to technical field of photovoltaic power generation, more particularly to a kind of photovoltaic junction box.
Background technology
With being gradually increased for environmental requirement, solar cell is more widely applied, and photovoltaic junction box is photovoltaic module
In important component, be used for by multiple photovoltaic module connection in series-parallel or by photovoltaic module with load connect, photovoltaic junction box
In avoid solar panel from being damaged because of hot-spot for preventing hot spot effect equipped with diode.
The both ends of diode are connected by conducting wire with two electric wire connecting junctions respectively in terminal box in the prior art, diode list
Member is higher with resistance at the tie point of conducting wire, and then causes the internal resistance of terminal box excessively high, and terminal box internal resistance is excessively high to consume the sun
The power of energy solar panel, influences the generating efficiency of photovoltaic module.In addition, the internal resistance of terminal box can cause terminal box to generate heat, cause
Metal junction oxidation rate is accelerated, and terminal box service life is seriously affected.
Therefore, how to reduce terminal box internal resistance is those skilled in the art's technical issues that need to address.
Invention content
The object of the present invention is to provide a kind of terminal boxes, and internal resistance is smaller, and the power consumed is relatively low, can make photovoltaic group
The generating efficiency of part improves.
To achieve the above object, the present invention provides a kind of photovoltaic junction box, including box body, two poles are equipped in the box body
Pipe unit further includes first connecting portion and second connecting portion, and the first connecting portion is connected with the box body, first connection
The first connection metal is equipped in portion, the first connection metal is connected with the first end of the diode；Described second connects
The second connection metal is equipped in socket part, the second connection metal is by the second end of conducting wire and the diode by leading
Line is connected, and the first connecting portion can be engaged by clamping with the second connecting portion so that described first connect metal and described the
Two connection metals are connected.
Preferably, the box body is rectangular, and the first connecting portion is located at the box body with the second connecting portion
Opposite both sides.
Preferably, the first side wall of the box body is equipped with the perforative cable hole of through-thickness, and the conducting wire passes through described
Cable hole is connected with the second end of the diode, and the second sidewall opposite with the first side wall is equipped with towards the box
The rear portion of the connecting groove of external side, the connecting groove is equipped with the through-hole that through-thickness runs through second sidewall, first connection
Portion is located on the outside of the through-hole, and the first connection metal is extended to across the through-hole in the first connecting portion.
Preferably, the pin of the first end connect metal with described first and is integrally formed.
Preferably, the first connecting portion and the second connecting portion are all made of MC4 connector standards.
Preferably, there is predetermined angle, the preset angle between the axis of the first connecting portion and the bottom plate of the box body
Ranging from 0~30 ° of degree.
Preferably, the box body passes through sealant pouring and sealing.
The pin of diode cathode and anode is connected with conducting wire in the prior art, the contact electricity between pin and conducting wire
Hinder larger, the internal resistance of terminal box mostlys come from the contact resistance of diode and conducting wire tie point.
In photovoltaic junction box provided by the present invention, first connecting portion is set to the side of box body, second connecting portion and box
Body is connected by conducting wire, and the first end of the first connection metal and diode in first connecting portion is connected directly, and second connects
The second end of the second connection metal and diode in socket part is connected by conducting wire.Only one in obvious photovoltaic junction box
Conducting wire, number of conductors are reduced, and can reduce the contact resistance between diode and conducting wire, and then reduce the interior of photovoltaic junction box
Resistance, improves the generating efficiency of photovoltaic module.
In addition, the consumption that conducting wire cuts and encapsulates in photovoltaic junction box manufacturing process can be reduced using a conducting wire,
To reduce entreprise cost, the performance of enterprises is improved.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of photovoltaic junction box provided by the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the accompanying drawings and it is embodied
The present invention is described in further detail for mode.
Referring to FIG. 1, Fig. 1 is the structural schematic diagram of photovoltaic junction box provided by the present invention.
Photovoltaic junction box provided by the present invention includes box body 1, first connecting portion 2 and second connecting portion 3, as shown in Figure 1,
Diode 11 is equipped in box body 1, first connecting portion 2 is connected with box body 1, and the first connection metal is equipped in first connecting portion 2,
First connection metal is connected with the first end of diode 11；The second connection metal, the second connection are equipped in second connecting portion 3
Metal is connected by conducting wire 4 with the second end of diode 11.
Core of the invention is that the first connection metal is directly connected with the first end of diode 11, reduces photovoltaic
The quantity of conducting wire 4 in terminal box, thereby reduces the contact resistance in photovoltaic junction box.
One effect of diode 11 is to make electric current one-way flow, avoids extraneous electric current from flowing into photovoltaic module, causes
Photovoltaic module damages；Another effect of diode assembly is to avoid photovoltaic module hot-spot caused by shadow occlusion, is caused
Photovoltaic module damages.The structure of diode 11 can refer to the prior art, and details are not described herein.
The first end and second end of diode 11 all has corresponding pin, and the anode of diode 11 can be
First end, cathode are second end, correspondingly, first connecting portion 2 is the anode of photovoltaic junction box, second connecting portion 3 connects for photovoltaic
The cathode of wire box；Certainly also may be selected diode 11 just extremely second end, cathode are first end, at this point, the first connection
Portion 2 is the cathode of photovoltaic junction box, and second connecting portion 3 is the anode of photovoltaic junction box.
Optionally, the pin of first end connect metal with first and is an integral molding structure part, and the two is integrally formed, resistance
Only conductor resistance, far smaller than contact resistance are at best able to drop to achieve the purpose that reduce photovoltaic junction box internal resistance
The contact resistance being at half and photovoltaic junction box internal resistance.Certainly, the pin of 11 first end of diode can also pass through welding
Mode with first connect metal be connected, the two welding resistance be similarly less than contact resistance, be conducive to reduce photovoltaic junction box
Internal resistance.The both ends of conducting wire 4 can also connect metal welding with second end and second respectively, to reduce contact resistance.
First connecting portion 2 can be engaged by clamping with second connecting portion 3 so that first connect metal and connect metal phase with second
Even, the structure of the first connection metal and the second connection metal can refer to the structure of electrode metal in MC4 connectors, no longer superfluous herein
It states.It should be noted that first connecting portion 2 is engaged by clamping with second connecting portion 3, refer to the first connection of a photovoltaic junction box
Portion 2 can be clamped with the second connecting portion 3 of other photovoltaic junction boxes, rather than the first connecting portion 2 of photovoltaic junction box itself with
Second connecting portion 3 is connected.
In the present embodiment, the first connection metal is directly connected with the first end of diode 11 in photovoltaic junction box, the
Two connection metals are connected by conducting wire 4 with second end, reduce the quantity of conducting wire 4 in photovoltaic junction box, and then reduce contact
The quantity of point, reduces the internal resistance of photovoltaic junction box.
Optionally, box body 1 is rectangular, first connecting portion 2 and second connecting portion 3 both sides that be located at box body 1 opposite, when
Multiple photovoltaic module connections are in use, the photovoltaic junction box on each photovoltaic module is sequentially connected.First connecting portion 2 and second connects
Socket part 3 is located at the opposite both sides of box body 1, can easy disassembly, while can avoid interfering with each other between multiple conducting wires 4, improve light
Lie prostrate component generating efficiency.
As shown in Figure 1, the two side being connected respectively with first connecting portion 2 and second connecting portion 3 all has preset thickness, box
The first side wall 12 of body 1 is equipped with the perforative cable hole of through-thickness, and conducting wire 4 passes through the second of cable hole and diode 11
End is connected, and cable hole can limit the axial displacement of conducting wire 4, avoid second end of the conducting wire 4 with diode 21 due to pullling
It loosens, improves the stability of photovoltaic junction box work.
The second sidewall 13 opposite with the first side wall 12 is equipped with the connecting groove 14 towards 1 outside of box body, first connecting portion 2
In connecting groove 14, the rear portion of connecting groove 14 is equipped with the through-hole that through-thickness runs through second sidewall 13, and first connecting portion 2 is located at
The outside of through-hole, the first connection metal are extended to across through-hole in first connecting portion 2.When first connecting portion 2 and second connecting portion 3
When mating, the two is respectively positioned in connecting groove 14, and connecting groove 14 can protect two interconnecting pieces, avoid rainwater or sand and dust
Deng the stability to work into connectivity port, raising photovoltaic junction box.
In addition, usually selecting the joint structure of MC4 connectors in photovoltaic module, first connecting portion 2 and second connecting portion 3 are equal
Using MC4 connector standards, ensure that photovoltaic junction box provided by the present invention has preferable versatility, certainly, user also can root
According to needing to select other joint forms, do not limit herein.
Since photovoltaic junction box needs to be connected with other photovoltaic junction boxes or load, the two is not same flat in some cases
In face, this just needs have predetermined angle between the axis of first connecting portion 2 and the bottom plate of box body 11, convenient and first connecting portion 2
Connection, while also can reduce the stress of first connecting portion 2 when photovoltaic junction box is pullled.The preferred model of predetermined angle a
It is 0~30 ° to enclose, and certain user can also select other predetermined angles as needed, not limit herein.
Obviously, photovoltaic junction box further includes that box cover can be sealed with box body 1 to be connected with the box cover that can coordinate with box body 1
It connects, avoiding the part in box body 1 from making moist influences the performance of photovoltaic junction box.To ensure that the leakproofness of photovoltaic junction box, box body 1 are logical
Sealant pouring and sealing is crossed, the circuit elements such as the diode 11 in box body 1 are wrapped up by insulating cement, so that it is completely cut off with external environment, keeps away
Exempt from circuit element to contact with water, improves the safety of photovoltaic junction box.
In the present embodiment, first connecting portion 2 and second connecting portion 3 are located at the both sides of box body 1, facilitate photovoltaic junction box
It is connect with other equipment, the second sidewall 13 where first connecting portion 2 is equipped with connecting groove 14, passes through two connection of the masking of connecting groove 14
Portion can avoid rainwater or sand and dust from entering junction and photovoltaic module is caused to damage.In addition, the bottom plate of first connecting portion 2 and box body 1
With predetermined angle, second connecting portion 3 and first connecting portion 2 can be facilitated mating, additionally it is possible to reduction pull during the
Stress suffered by one interconnecting piece 2 avoids first connecting portion 2 from damaging.
It should be noted that in the present specification, such as first and second etc relational terms are used merely to one
Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual
Relationship or sequence.
Photovoltaic junction box provided by the present invention is described in detail above.Specific case used herein is to this
The principle and embodiment of invention is expounded, the explanation of above example is only intended to help understand the present invention method and
Its core concept.It should be pointed out that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection of the claims in the present invention
In range.
Claims (7)
1. a kind of photovoltaic junction box, which is characterized in that including box body (1), diode (11) is equipped in the box body (1),
Further include first connecting portion (2) and second connecting portion (3), the first connecting portion (2) is connected with the box body (1), and described
The first connection metal, the first end phase of the first connection metal and the diode (11) are equipped in one interconnecting piece (2)
Even；The second connection metal, the second connection metal and the diode (11) are equipped in the second connecting portion (3)
Second end is connected by conducting wire (4), and the first connecting portion (2) can be engaged by clamping with the second connecting portion (3) so that institute
State the first connection metal with described second connect metal be connected.
2. photovoltaic junction box according to claim 1, which is characterized in that the box body (1) is rectangular, first connection
Portion (2) is located at the opposite both sides of the box body (1) with the second connecting portion (3).
3. photovoltaic junction box according to claim 2, which is characterized in that the first side wall (12) of the box body (1) is equipped with
The perforative cable hole of through-thickness, the conducting wire (4) pass through the second end of the cable hole and the diode (11)
It is connected；The second sidewall (13) opposite with the first side wall (12) is equipped with towards the connecting groove (14) on the outside of the box body (1),
The rear portion of the connecting groove (14) is equipped with the through-hole that through-thickness runs through second sidewall (13), first connecting portion (2) position
On the outside of the through-hole, the first connection metal is extended to across the through-hole in the first connecting portion (2).
4. photovoltaic junction box according to claim 3, which is characterized in that the pin of the first end is connect with described first
Metal is integrally formed.
5. photovoltaic junction box according to claim 4, which is characterized in that the first connecting portion (2) and described second connects
Socket part (3) is all made of MC4 connector standards.
6. according to the photovoltaic junction box described in claim 1 to 5 any one, which is characterized in that the first connecting portion (2)
Between axis and the bottom plate of the box body (1) have predetermined angle, ranging from 0~30 ° of the predetermined angle.
7. according to the photovoltaic junction box described in claim 1 to 5 any one, which is characterized in that the box body (1) passes through encapsulating
Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810668274.6A CN108599716A (en) | 2018-06-26 | 2018-06-26 | A kind of photovoltaic junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810668274.6A CN108599716A (en) | 2018-06-26 | 2018-06-26 | A kind of photovoltaic junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108599716A true CN108599716A (en) | 2018-09-28 |
Family
ID=63634287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810668274.6A Pending CN108599716A (en) | 2018-06-26 | 2018-06-26 | A kind of photovoltaic junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108599716A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011614A (en) * | 2019-05-06 | 2019-07-12 | 晶科能源有限公司 | A kind of photovoltaic wire box and a kind of photovoltaic module |
| CN110061694A (en) * | 2019-05-06 | 2019-07-26 | 晶科能源有限公司 | A kind of photovoltaic wire box and a kind of photovoltaic module |
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|---|---|---|---|---|
| CN103208545A (en) * | 2012-01-13 | 2013-07-17 | 比亚迪股份有限公司 | Solar cell module |
| CN203851095U (en) * | 2014-04-25 | 2014-09-24 | 江苏九鼎光伏系统有限公司 | Photovoltaic cell module junction box with surface having no bus bar wiring window |
| CN104362972A (en) * | 2014-11-15 | 2015-02-18 | 信息产业部电子第四十研究所华成高新技术公司 | Split type photovoltaic terminal box with cable protection structure |
| CN204180011U (en) * | 2014-11-15 | 2015-02-25 | 信息产业部电子第四十研究所华成高新技术公司 | The split type photovoltaic junction box of tape cable operator guards |
| CN204180010U (en) * | 2014-11-15 | 2015-02-25 | 信息产业部电子第四十研究所华成高新技术公司 | Split type photovoltaic junction box |
| CN208353286U (en) * | 2018-06-26 | 2019-01-08 | 浙江晶科能源有限公司 | A kind of photovoltaic junction box |
-
2018
- 2018-06-26 CN CN201810668274.6A patent/CN108599716A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208545A (en) * | 2012-01-13 | 2013-07-17 | 比亚迪股份有限公司 | Solar cell module |
| CN203851095U (en) * | 2014-04-25 | 2014-09-24 | 江苏九鼎光伏系统有限公司 | Photovoltaic cell module junction box with surface having no bus bar wiring window |
| CN104362972A (en) * | 2014-11-15 | 2015-02-18 | 信息产业部电子第四十研究所华成高新技术公司 | Split type photovoltaic terminal box with cable protection structure |
| CN204180011U (en) * | 2014-11-15 | 2015-02-25 | 信息产业部电子第四十研究所华成高新技术公司 | The split type photovoltaic junction box of tape cable operator guards |
| CN204180010U (en) * | 2014-11-15 | 2015-02-25 | 信息产业部电子第四十研究所华成高新技术公司 | Split type photovoltaic junction box |
| CN208353286U (en) * | 2018-06-26 | 2019-01-08 | 浙江晶科能源有限公司 | A kind of photovoltaic junction box |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011614A (en) * | 2019-05-06 | 2019-07-12 | 晶科能源有限公司 | A kind of photovoltaic wire box and a kind of photovoltaic module |
| CN110061694A (en) * | 2019-05-06 | 2019-07-26 | 晶科能源有限公司 | A kind of photovoltaic wire box and a kind of photovoltaic module |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180928 |