CN208353287U - A kind of photovoltaic junction box - Google Patents
A kind of photovoltaic junction box Download PDFInfo
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- CN208353287U CN208353287U CN201820994802.2U CN201820994802U CN208353287U CN 208353287 U CN208353287 U CN 208353287U CN 201820994802 U CN201820994802 U CN 201820994802U CN 208353287 U CN208353287 U CN 208353287U
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- box body
- connector portions
- diode
- box
- photovoltaic junction
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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
The utility model discloses a kind of photovoltaic junction boxes, including the first box body and the second box body, first diode and the second diode are respectively equipped in first box body and the second box body, the side of first box body is equipped with the first connector portions, the side of second box body is equipped with the second connector portions, first diode, which has, lengthens pin, pin is lengthened to extend in the first connector portions, first connector portions can be engaged by clamping with the second connector portions, second connector portions are equipped with the joint metal to be connected when the first connector portions are clamped with the second connector portions with lengthening pin, second diode is connected by conducting wire with joint metal.Photovoltaic junction box adopts a split structure, second box body has conducting wire, the second connector portions being connected by conducting wire with the second box body can be connected with the first connector portions of the first box body, first box body does not set conducting wire, to reduce the quantity of conducting wire in photovoltaic junction box, and then reduce the quantity of tie point in circuit, reduce the internal resistance of photovoltaic junction box.
Description
Technical field
The utility model relates to photovoltaic accessory technical field, in particular to a kind of photovoltaic junction box.
Background technique
Photovoltaic junction box is the important component in solar cell module, is used to connect photovoltaic module, will be multiple
Photovoltaic module is series-parallel or connects photovoltaic module and load, and the diode for preventing hot spot effect is equipped in photovoltaic junction box,
Solar panel is avoided to damage because of hot-spot.
Diode in terminal box needs to be connected by cable with load or other photovoltaic modulies, diode pin and cable
Junction contact resistance with higher, and then cause the internal resistance of terminal box higher.The internal resistance of terminal box can consume solar energy
The power of solar panel influences the generating efficiency of photovoltaic module.In addition, the internal resistance of terminal box will cause terminal box fever, and then lead
It causes the junction oxidation rate of pin and cable metal to accelerate, influences terminal box service life.
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 photovoltaic junction boxs, and internal resistance is smaller, can be improved photovoltaic module power generation
Efficiency reduces photovoltaic junction box calorific value.
To achieve the above object, the utility model provides a kind of photovoltaic junction box, including the first box body and the second box body, institute
It states in the first box body and second box body and is respectively equipped with first diode and the second diode, the side of first box body is set
There are the first connector portions, the side of second box body is equipped with the second connector portions, and the first diode, which has, lengthens pin, described
It lengthens pin to extend in first connector portions, first connector portions can be engaged by clamping with second connector portions, institute
The second connector portions are stated to be equipped with to connect when the first connector portions are clamped with second connector portions with what the lengthening pin was connected
Head metal, second diode are connected by conducting wire with the joint metal.
Preferably, first box body is in cuboid, has the first cavity in cuboid in first box body, described
First box body has seating side, and the seating side is equipped with the through-hole in impenetrating thickness direction, and first joint area is in institute
The outside of seating side is stated, the lengthening pin passes through the through-hole and extends in first connector portions.
Preferably, the bottom surface of first box body has the wire connecting portion to extension on the outside of the seating side.
Preferably, second box body is in cuboid, with the second cavity of cuboid in second box body, described the
Two box bodys have the fixed part to the fixation conducting wire, and the fixed part is equipped with cable hole, and the conducting wire passes through the cabling
Hole is connected with the pin of second diode.
Preferably, first connector portions and second connector portions are all made of MC4 connector standard.
Preferably, the bottom surface of first box body and second box body is equipped with impenetrating thickness direction via hole, described in two
The position of via hole is opposite with the position of the first diode and the second diode pin respectively.
Preferably, there is predetermined angle between the axis of first connector portions and the bottom plate of first box body, it is described pre-
If the range of angle is 0~30 °.
Preferably, first box body and second box body pass through sealant pouring and sealing.
It is equipped with diode and conducting wire in two box bodys of Split type connecting box in the prior art, by conducting wire by two box bodys
In diode be connected, but the contact resistance of the tie point of diode and conducting wire is larger, and the internal resistance of terminal box mostlys come from this
Contact resistance.
Photovoltaic junction box provided by the utility model includes the first box body and the second box body, the first box body and the second box body
In be respectively equipped with first diode and the second diode, first diode has the lengthening pin extended in the first connector portions,
Second diode is connected by conducting wire with the connection metal in the second connector portions, and the first connector portions can be with the second connector portions phase
Even, realize that photovoltaic module is connected with other photovoltaic modulies or with load.
Only have the second box body to be equipped with conducting wire in photovoltaic junction box provided by the utility model, reduces the quantity of conducting wire, energy
The quantity of tie point in photovoltaic junction box is enough reduced, and then reduces contact resistance, since tie point is arranged in series, reduces contact
Resistance can reduce the internal resistance of photovoltaic junction box.It is led in addition, can reduce in photovoltaic junction box manufacturing process using a conducting wire
The consumption that line cuts and encapsulates improves the performance of enterprises to reduce entreprise cost.
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 the first box body in photovoltaic junction box provided by the utility model；
Fig. 2 is the structural schematic diagram of the second box body in photovoltaic junction box provided by the utility model；
Fig. 3 is the side view of the first box body.
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.
Fig. 1 to Fig. 3 is please referred to, Fig. 1 is the structural representation of the first box body in photovoltaic junction box provided by the utility model
Figure；Fig. 2 is the structural schematic diagram of the second box body in photovoltaic junction box provided by the utility model；Fig. 3 is the side of the first box body
View.
The core of the utility model is to be not provided with conducting wire 23 in the first box body 1, but by the lengthening of first diode 11
Pin 13 is directly connected with the joint metal of the second connector portions 22, to reduce 23 quantity of conducting wire in photovoltaic junction box, simultaneously
Tie point quantity is reduced, achievees the purpose that reduce photovoltaic junction box internal resistance.
Photovoltaic junction box provided by the utility model includes the first box body 1 and the second box body 2, the first box body 1 and second
The structure difference of box body 2 is as depicted in figs. 1 and 2, and first diode 11 and the are respectively equipped in the first box body 1 and the second box body 2
Two diodes 21, the side of the first box body 1 are equipped with the first connector portions 12 extended to the direction far from the first box body 1, the second box
Body 2 is connected with the second connector portions 22 by conducting wire 23.First diode 11, which has, lengthens pin 13, lengthens pin 13 and extends to the
In one connector portions 12, joint metal is equipped in the second connector, a pin of the second diode 21 passes through conducting wire 23 and connector gold
Symbolic animal of the birth year connects, and the first connector portions 12 can be engaged by clamping with the second connector portions 22, lengthens pin 13 and connector gold when the two clamping
Symbolic animal of the birth year connects.
First diode 11 is connected by the first connector portions 12 with the second connector portions 22 with the second diode 21, can be realized
Circuit conducting, therefore the pin polarity being connected in the lengthening pin 13 and the second diode 21 of first diode 11 with joint metal
If the cathode of second diode 21 is connected with joint metal on the contrary, lengthening the anode that pin 13 is first diode 11,
Vice versa.
First diode 11 can be specially customization diode, and a pin for customizing diode is customized to electrode metal
The metal block of one pin of common diode and electrode shape can also be formed by welding and lengthen pin 13 by shape.Electrode gold
The shape of category can refer to the connection metal in photovoltaic connector in the prior art, and details are not described herein.
In the terminal box of the prior art, the both ends of cable are connected by way of winding with diode and electrode metal
It connects, terminal box can be due to containing impurity and joint oxygen in cable and diode or electrode metal poor contact, cable metal
The reasons such as change, cause contact resistance to increase.There is two lines cable, the first box body 1 in the present embodiment in the terminal box of the prior art
In eliminate a cable, disadvantages mentioned above can be overcome, be at best able to reduce half contact resistance and wire box all-in resistance.
Optionally, the first box body 1 is in cuboid, has the first cavity in cuboid, first diode in the first box body 1
11 are set in the first cavity, and the first box body 1 has seating side 14, and seating side 14 is equipped with the through-hole in impenetrating thickness direction,
First connector portions 12 are located at the outside of seating side 14, lengthen pin 13 and extend in the first connector portions 12 across through-hole.
Specifically, seating side 14 between two adjacent sides, is approximately perpendicular to the diagonal line of cassette bottom, the first connector portions
12 substantially extend along the cornerwise direction of cassette bottom to the outside of the first box body 1.Since the length of diagonal line of box body is relatively long, the
One connector portions 12 extend along the cornerwise direction of cassette bottom, can make full use of the space of the first box body 1, to reduce the first box body
1 volume keeps photovoltaic junction box occupied space smaller.
First connector portions 12 and the second connector portions 22 are engaged by clamping, and the bottom surface of the first box body 1 has to outside seating side 14
The wire connecting portion 15 that side extends, wire connecting portion 15 is located at the lower section of the first connector portions 12, when the first connector portions 12 and the second connector portions 22
When clamping, wire connecting portion 15 can support the first connector portions 12 and the second connector portions 22, and the two is avoided to loosen.
Optionally, the second box body 2 is in cuboid, the second cavity with cuboid in the second box body 2, the second diode 21
In the second cavity, the second box body 2 has fixed part 24 of the diagonal along cassette bottom to extension on the outside of box body, fixed part
24 for fixing conducting wire 23.
Specifically, fixed part 24 is equipped with diagonally perforative cable hole, conducting wire 23 passes through cable hole and the two or two
The pin of pole pipe 21 is connected, and conducting wire 23 can be fixed in fixed part 24, limits the axial displacement of conducting wire 23, avoids conducting wire 23
It is loosened due to pullling with the pin of the second diode 21, improves the stability of photovoltaic junction box work.
In addition, usually select the joint structure of MC4 connector in photovoltaic module, for the applicability for improving photovoltaic junction box,
First connector portions 12 and the second connector portions 22 are all made of MC4 connector standard, to guarantee photovoltaic wiring provided by the utility model
Box can be connected with existing connector.
Obviously, the first box body 1 and the second box body 2 all have can be matched box cover, box cover can seal with box body
Connection avoids the intracorporal part dampness of box from influencing the performance of photovoltaic junction box.For the leakproofness for guaranteeing photovoltaic junction box, the first box
Body 1 and the second box body 2 completely cut off it with external environment by the circuit element in insulating cement package box body by sealant pouring and sealing,
It avoids circuit element to contact with water, improves the waterproofness and insulating properties of photovoltaic junction box.
In the present embodiment, the first box body 1 and the second box body 2 are cuboid, and the first connector portions 12 and conducting wire 23 are along each
Extend from the diagonal of place box bottom, makes full use of the intracorporal space of box, keep the volume of photovoltaic junction box smaller
Ingeniously.
First box body 1 and the second box body 2 are usually connected with solar panel, the bottom of the first box body 1 and the second box body 2
Face is equipped with impenetrating thickness direction via hole, and first diode 11 and the second diode 21 have a pin for connecting the sun respectively
Energy solar panel, the position of two via holes connect the pin of solar panel with first diode 11 and the second diode 21 respectively
Position is corresponding.Two box bodys can be tightly connected with solar panel, and the pin of two diodes passes through cassette bottom lead and solar energy
Solar panel is connected, and convenient for being sealed to lead, can reduce a possibility that photovoltaic junction box makes moist.
As it was noted above, the lengthening pin 13 of a first diode 11 and pin of the second diode 21 is used for and connector
Portion is connected, and respectively there are also a pins for the two, and the pin with solar panel for being connected.
In connection procedure, the first connector portions 12 and the second connector portions 22 may not in the same plane, to make the first connector
Portion 12 has predetermined angle a, the model of predetermined angle a convenient for connection between the axis of the first connector portions 12 and the bottom plate of the first box body 1
Enclose is 0~30 °.
In the present embodiment, the bottom surface of two box bodys is equipped with via hole, and what the pin of two diodes was connected with solar panel draws
Line passes through via hole, and in the bottom surface of box body, setting via hole, which can facilitate, carries out damp-proof treatment to lead, reduces the possibility of lead dampness
Property, to improve the reliability of photovoltaic junction box work.
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 (8)
1. a kind of photovoltaic junction box, which is characterized in that including the first box body (1) and the second box body (2), first box body (1)
Be respectively equipped with first diode (11) and the second diode (21) in second box body (2), the one of first box body (1)
Side is equipped with the first connector portions (12), and the side of second box body (2) is equipped with the second connector portions (22), the first diode
(11) have and lengthen pin (13), the lengthening pin (13) extends in first connector portions (12), first connector
Portion (12) can be engaged by clamping with second connector portions (22), and second connector portions (22) are equipped with to when the first connector portions
(12) joint metal being connected when being clamped with second connector portions (22) with lengthening pin (13), second diode
(21) it is connected by conducting wire (23) with the joint metal.
2. photovoltaic junction box according to claim 1, which is characterized in that first box body (1) is in cuboid, and described the
There is the first cavity in cuboid, first box body (1) has seating side (14), the installation side in one box body (1)
Face (14) is equipped with the through-hole in impenetrating thickness direction, and first connector portions (12) are located at the outside of the seating side (14), institute
Lengthening pin (13) is stated to extend in first connector portions (12) across the through-hole.
3. photovoltaic junction box according to claim 2, which is characterized in that the bottom surface of first box body (1) has to institute
State the wire connecting portion (15) extended on the outside of seating side (14).
4. photovoltaic junction box according to claim 1, which is characterized in that second box body (2) is in cuboid, and described the
With the second cavity of cuboid in two box bodys (2), second box body (2) is with the fixation to the fixation conducting wire (23)
Portion (24), the fixed part (24) are equipped with cable hole, and the conducting wire (23) passes through the cable hole and second diode
(21) pin is connected.
5. photovoltaic junction box according to claim 4, which is characterized in that first connector portions (12) and described second connect
Head (22) is all made of MC4 connector standard.
6. photovoltaic junction box according to claim 5, which is characterized in that first box body (1) and second box body
(2) bottom surface is equipped with impenetrating thickness direction via hole, the position of two via holes respectively with the first diode (11) and institute
The position for stating the second diode (21) pin is opposite.
7. according to claim 1 to photovoltaic junction box described in 6 any one, which is characterized in that first connector portions (12)
Axis and first box body (1) bottom plate between there is predetermined angle, the range of the predetermined angle is 0~30 °.
8. according to claim 1 to photovoltaic junction box described in 6 any one, which is characterized in that first box body (1) and institute
It states the second box body (2) and passes through sealant pouring and sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820994802.2U CN208353287U (en) | 2018-06-26 | 2018-06-26 | A kind of photovoltaic junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820994802.2U CN208353287U (en) | 2018-06-26 | 2018-06-26 | A kind of photovoltaic junction box |
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| Publication Number | Publication Date |
|---|---|
| CN208353287U true CN208353287U (en) | 2019-01-08 |
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ID=64881989
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820994802.2U Active CN208353287U (en) | 2018-06-26 | 2018-06-26 | A kind of photovoltaic junction box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108551325A (en) * | 2018-06-26 | 2018-09-18 | 浙江晶科能源有限公司 | A kind of photovoltaic junction box |
-
2018
- 2018-06-26 CN CN201820994802.2U patent/CN208353287U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108551325A (en) * | 2018-06-26 | 2018-09-18 | 浙江晶科能源有限公司 | A kind of photovoltaic junction box |
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