CN208353286U - A kind of photovoltaic junction box - Google Patents
A kind of photovoltaic junction box Download PDFInfo
- Publication number
- CN208353286U CN208353286U CN201820994288.2U CN201820994288U CN208353286U CN 208353286 U CN208353286 U CN 208353286U CN 201820994288 U CN201820994288 U CN 201820994288U CN 208353286 U CN208353286 U CN 208353286U
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- CN
- China
- Prior art keywords
- photovoltaic junction
- junction box
- box body
- connecting portion
- metal
- 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
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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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- Photovoltaic Devices (AREA)
Abstract
本实用新型公开了一种光伏接线盒，包括盒体，盒体中设有二极管单元，还包括第一连接部和第二连接部，第一连接部与盒体相连，第一连接部中设有第一连接金属，第一连接金属与二极管单元的第一端相连；第二连接部中设有第二连接金属，第二连接金属通过导线与二极管单元的第二端通过导线相连，第一连接部能够与第二连接部卡接配合以使第一连接金属与第二连接金属相连。第一连接部直接与二极管单元的第一端相连，减少了光伏接线盒中导线的数量，进而减少了连接点的数量，降低了光伏接线盒中的接触电阻，达到了降低光伏接线盒内阻的目的。
The utility model discloses a photovoltaic junction box, comprising a box body, a diode unit is arranged in the box body, a first connection part and a second connection part, the first connection part is connected with the box body, and the first connection part is arranged in the There is a first connecting metal, and the first connecting metal is connected with the first end of the diode unit; the second connecting part is provided with a second connecting metal, and the second connecting metal is connected with the second end of the diode unit through a wire through a wire, and the first connecting metal is connected with the second end of the diode unit through a wire. The connecting portion can be snap-fitted with the second connecting portion to connect the first connecting metal with the second connecting metal. The first connection part is directly connected to the first end of the diode unit, which reduces the number of wires in the photovoltaic junction box, thereby reducing the number of connection points, reducing the contact resistance in the photovoltaic junction box, and reducing the internal resistance of the photovoltaic junction box. the goal of.
Description
Technical field
The utility model relates to technical field of photovoltaic power generation, in particular to a kind of photovoltaic junction box.
Background technique
With being gradually increased for environmental requirement, solar battery is more widely applied, and photovoltaic junction box is photovoltaic module
In important component, be used for multiple photovoltaic modulies are series-parallel or connect photovoltaic module and load, photovoltaic junction box
In be equipped with diode and avoid solar panel from damaging because of hot-spot for preventing hot spot effect.
The both ends of diode pass through conducting wire respectively and are connected with two electric wire connecting junctions 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 will cause terminal box fever, 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.
Utility model content
The purpose of the utility model is to provide a kind of terminal boxes, and internal resistance is smaller, and consumed power is lower, can make light
The generating efficiency for lying prostrate component improves.
To achieve the above object, the utility model provides a kind of photovoltaic junction box, including box body, is equipped in the box body
Diode further includes first connecting portion and second connecting portion, and the first connecting portion is connected with the box body, and described first
The first connection metal is equipped in interconnecting piece, the first connection metal is connected with the first end of the diode；Described
The second connection metal is equipped in two interconnecting pieces, the second connection metal is logical by the second end of conducting wire and the diode
It crosses conducting wire to be connected, the first connecting portion can be engaged by clamping with the second connecting portion so that described first connect metal and institute
The second connection metal is stated to be connected.
Preferably, the box body is in rectangle, and the first connecting portion and the second connecting portion are located at the box body
Opposite two 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 connecting groove of external side, the rear portion of the connecting groove are 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 passes through the through-hole and extends 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 standard.
Preferably, there is predetermined angle, the preset angle between the axis of the first connecting portion and the bottom plate of the box body
The range of degree is 0~30 °.
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 Yu conducting wire tie point.
In photovoltaic junction box provided by the utility model, first connecting portion is set to the side of box body, second connecting portion
It is connected with box body by conducting wire, the first end of the first connection metal and diode in first connecting portion is connected directly, the
The second end of the second connection metal and diode in two interconnecting pieces is connected by conducting wire.In obvious photovoltaic junction box only
One conducting wire, number of conductors are reduced, and can reduce the contact resistance between diode and conducting wire, and then reduce photovoltaic junction box
Internal resistance, improve the generating efficiency of photovoltaic module.
In addition, the consumption that conducting wire cuts and encapsulates in photovoltaic junction box manufacturing process can reduce using a conducting wire,
To reduce entreprise cost, the performance of enterprises is improved.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structural schematic diagram of photovoltaic junction box provided by the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In order to make those skilled in the art more fully understand the utility model, with reference to the accompanying drawing and specifically
The utility model is described in further detail for embodiment.
Referring to FIG. 1, Fig. 1 is the structural schematic diagram of photovoltaic junction box provided by the utility model.
Photovoltaic junction box provided by the utility model includes box body 1, first connecting portion 2 and second connecting portion 3, such as Fig. 1
It is shown, diode 11 is equipped in box body 1, first connecting portion 2 is connected with box body 1, and the first connection is equipped in first connecting portion 2
Metal, the first connection metal are connected with the first end of diode 11；The second connection metal is equipped in second connecting portion 3, the
Two connection metals are connected by conducting wire 4 with the second end of diode 11.
The core of the utility model is that the first connection metal is directly connected with the first end of diode 11, reduces
The quantity of conducting wire 4 in photovoltaic junction 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 damage；Another effect of diode assembly is to avoid photovoltaic module because of hot-spot caused by shadow occlusion, is caused
Photovoltaic module damage.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, 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 so that first connect metal and connect metal phase with second with second connecting portion 3
Even, the structure of the first connection metal and the second connection metal can refer to the structure of electrode metal in MC4 connector, no longer superfluous herein
It states.It should be noted that first connecting portion 2 and second connecting portion 3 are engaged by clamping, refer to first connection an of 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 in rectangle, first connecting portion 2 and second connecting portion 3 two 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 two sides of box body 1, can easy disassembly, while can be avoided and interfere with each other between multiple conducting wires 4, improve light
Lie prostrate component generating efficiency.
As shown in Figure 1, the two sidewalls being connected respectively with first connecting portion 2 and second connecting portion 3 all have 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 due to pullling with diode 21
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 the outside of box body 1, and 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 pass through through-hole and extend 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, avoids 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 connector in photovoltaic module, first connecting portion 2 and second connecting portion 3 are equal
Using MC4 connector standard, guarantee that photovoltaic junction box provided by the utility model has preferable versatility, certainly, Yong Huye
Other joint forms can be selected as needed, it is not limited here.
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 to 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
Enclosing is 0~30 °, and certain user can also select other predetermined angles as needed, it is not limited here.
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 cooperate with box body 1
It connects, avoiding the part in box body 1 from making moist influences the performance of photovoltaic junction box.For the leakproofness for guaranteeing photovoltaic junction box, box body 1 leads to
Sealant pouring and sealing is crossed, circuit elements are waited by the diode 11 in insulating cement package box body 1, completely cuts off itself and 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 two 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 be avoided rainwater or sand and dust enter 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 utility model is described in detail above.Specific case used herein
The principles of the present invention and embodiment are expounded, the above embodiments are only used to help understand, and this is practical
Novel method and its core concept.It should be pointed out that for those skilled in the art, not departing from this reality
Under the premise of with new principle, several improvements and modifications can be made to this utility model, these improvement and modification are also fallen into
In the protection scope of the utility model claims.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820994288.2U CN208353286U (en) | 2018-06-26 | 2018-06-26 | A kind of photovoltaic junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820994288.2U CN208353286U (en) | 2018-06-26 | 2018-06-26 | A kind of photovoltaic junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208353286U true CN208353286U (en) | 2019-01-08 |
Family
ID=64881957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820994288.2U Expired - Fee Related CN208353286U (en) | 2018-06-26 | 2018-06-26 | A kind of photovoltaic junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208353286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599716A (en) * | 2018-06-26 | 2018-09-28 | 浙江晶科能源有限公司 | A kind of photovoltaic junction box |
-
2018
- 2018-06-26 CN CN201820994288.2U patent/CN208353286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599716A (en) * | 2018-06-26 | 2018-09-28 | 浙江晶科能源有限公司 | A kind of photovoltaic junction box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190108 |