CN218868191U - Photovoltaic junction box of multi-segment photovoltaic module - Google Patents
Photovoltaic junction box of multi-segment photovoltaic module Download PDFInfo
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- CN218868191U CN218868191U CN202223092807.1U CN202223092807U CN218868191U CN 218868191 U CN218868191 U CN 218868191U CN 202223092807 U CN202223092807 U CN 202223092807U CN 218868191 U CN218868191 U CN 218868191U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a photovoltaic junction box of a multi-segment photovoltaic component, which comprises three circuit contacts A, B and C; the photovoltaic junction box is arranged between the contact A and the contact C and comprises a first diode, a second diode, a first conducting strip for electrically connecting the contact A, a second conducting strip for electrically connecting the contact B and a third conducting strip for electrically connecting the contact C; the first conducting strip is electrically connected with the second conducting strip through the first diode, and is also electrically connected with the third conducting strip through the first diode and the second diode in sequence. The utility model provides a multi-segment photovoltaic module's photovoltaic terminal box can connect and protect multi-segment photovoltaic module, can also reduce the area that the terminal box sheltered from the battery piece, and then reduces because of the terminal box shelters from the influence to photovoltaic module performance that the battery piece caused.
Description
Technical Field
The utility model relates to a many burst photovoltaic module technical field especially relates to a many burst photovoltaic module's photovoltaic terminal box.
Background
At present, the size of a photovoltaic cell is continuously increased, and the current of the cell is continuously increased. When a photovoltaic module is manufactured by using a large-size battery piece, the battery piece is usually cut into a plurality of small pieces, namely battery slices, so that the current of the battery piece is reduced, the power loss of the module is reduced, and the power output of the module is improved. For example 202210847388.3 multi-slice photovoltaic modules, which comprise six cell slices and three bus bars (middle bus bar, first jumper bus bar, second jumper bus bar).
The photovoltaic junction box is a connecting device between a solar cell array formed by solar cell modules and the solar charging control device, and is mainly used for connecting and protecting the solar cell modules, connecting electric power generated by the solar cells with an external circuit and conducting current generated by the photovoltaic modules. Existing junction boxes such as 202023053264.3 are designed for half-sheet pv modules (the structure of a common half-sheet pv module is shown in fig. 1, which requires three identical sub-junction boxes, each with a diode), and are not suitable for multi-segment pv modules such as 202210847388.3.
Therefore, it is very important to provide a photovoltaic junction box capable of connecting and protecting a multi-piece photovoltaic module.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a multi-segment photovoltaic module's photovoltaic terminal box is provided, multi-segment photovoltaic module can be connected and protected, the area that the battery piece was sheltered from to the terminal box can also be reduced, and then the influence to photovoltaic module performance that the reduction sheltered from the battery piece because of the terminal box caused is reduced.
In order to solve the technical problem, the utility model discloses a photovoltaic junction box of a multi-segment photovoltaic assembly, which comprises a middle bus bar, a first jumper bus bar, a first battery piece, a second battery piece, a third battery piece and a fourth battery piece; one electrodes of the first battery piece and the second battery piece are connected to the intermediate bus bar to form a contact A, the other electrodes are connected together through the first jumper bus bar so that the first battery piece and the second battery piece are connected in parallel, and the first jumper bus bar and the intermediate bus bar are provided with a contact B; one electrode of the third battery piece and one electrode of the fourth battery piece are connected to the middle bus bar forming contact C; the method is characterized in that:
the photovoltaic junction box is arranged between the contact A and the contact C and comprises a first diode, a second diode, a first conducting strip for electrically connecting the contact A, a second conducting strip for electrically connecting the contact B and a third conducting strip for electrically connecting the contact C;
the first conducting strip is electrically connected with the second conducting strip through the first diode, and is also electrically connected with the third conducting strip through the first diode and the second diode in sequence.
As an optional embodiment, the second conductive sheet is provided with 2 bus bar fixing holes;
the first jumper bus bar led out from the first battery piece electrode penetrates through one bus bar fixing hole and is fixed on the second conductive piece, and the first jumper bus bar led out from the second battery piece electrode penetrates through the other bus bar fixing hole and is fixed on the second conductive piece.
As a further alternative embodiment, the first conductive sheet, the second conductive sheet and the third conductive sheet are all disposed in the middle of the photovoltaic junction box;
the first conducting sheet and the third conducting sheet are both provided with bus bar fixing holes, the 2 bus bar fixing holes are square holes, and the length directions of the 2 bus bars are the up-down direction of the photovoltaic junction box;
the 2 bus bar fixing holes of the second conducting strip are respectively formed in the upper side and the lower side of the second conducting strip, the 2 bus bar fixing holes are square holes, and the length directions of the 2 bus bars are the left direction and the right direction of the photovoltaic junction box.
As another optional embodiment, the second conductive sheet is provided with 1 bus bar fixing hole, and the bus bar fixing hole is used for fixing a bus bar on the conductive sheet;
the first jumper wire bus bar led out from the first battery piece electrode and the second battery piece electrode jointly penetrates through the bus bar fixing hole and is fixed on the second conductive piece.
As a further alternative embodiment, the first conductive sheet, the second conductive sheet and the third conductive sheet are all disposed in the middle of the photovoltaic junction box;
the first conducting strip with all be provided with on the third conducting strip the busbar fixed orifices, these 2 busbar fixed orifices and the second conducting strip the busbar fixed orifices is the square hole, and the length direction of these 3 busbar fixed orifices is the upper and lower direction of photovoltaic terminal box.
As a further alternative, the first diode and/or the second diode is one diode or two or more diodes connected in parallel.
As still another alternative embodiment, a bus bar guide hole is provided at the bottom of the junction box directly below at least one of the bus bar fixing holes; the busbar guiding hole is in a conical shape with a large opening at the bottom and is used for inserting the busbar.
As yet another alternative embodiment, the photovoltaic junction box further comprises an output; the output end is electrically connected with the first conducting strip and used for outputting the electric energy of the battery piece.
Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:
the photovoltaic junction box provided by the embodiment of the utility model is applied to a multi-slice photovoltaic component, two junction boxes are needed for the multi-slice photovoltaic component, one junction box is a conventional single-diode junction box, and the other junction box is a double-diode junction box; the terminal box of this embodiment sets up two diodes in same terminal box, owing to need not repeated input/output end that sets up, compare in using two single diode terminal boxes and can occupy littleer space, the area of its battery piece that shelters from is also littleer, on this basis, because photovoltaic cell piece is sheltered from and not sheltered from when changing its resistance can change, lead to performance changes such as subassembly power, two-sided rate, hot spot, consequently, use the terminal box of this embodiment can reduce because of the terminal box shelters from the influence that the battery piece caused to photovoltaic subassembly performance.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a conventional half-sheet assembly photovoltaic module disclosed in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a layout design of a multi-segment photovoltaic module disclosed in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an internal circuit structural design of a multi-segment photovoltaic module according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a multi-segment photovoltaic module and a photovoltaic junction box disclosed in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a photovoltaic junction box of a multi-slice photovoltaic module disclosed in an embodiment of the present invention;
fig. 6 is a schematic structural view of another photovoltaic junction box of a multi-segment photovoltaic module disclosed in the embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
Example one
Referring to fig. 2 to 4, the multi-segment photovoltaic module of the present embodiment includes an intermediate bus bar 1, a first jumper bus bar 21, a second jumper bus bar 22, a first cell 31, a second cell 32, a third cell 33, a fourth cell 34, a fifth cell 35, a sixth cell 36, and the photovoltaic junction box 5;
the first cell piece 31 and the second cell piece 32, the third cell piece 33 and the fourth cell piece 34, and the fifth cell piece 35 and the sixth cell piece 36 are symmetrically arranged along the middle bus bar 1 in terms of space and polarity;
one electrodes of the first cell piece 31 and the second cell piece 32 are connected to the intermediate bus bar 1 to form a contact A, the other electrodes are connected together through the first jumper bus bar 21 so that the two are connected in parallel, and the first jumper bus bar 21 and the intermediate bus bar 1 have a contact B;
one electrodes of the third battery piece 33 and the fourth battery piece 34 are connected to the intermediate bus bar 1 to form a contact C, and the other electrodes are connected together through the first jumper bus bar 21 so that the two are connected in parallel;
one electrode of the fifth battery piece 35 and the sixth battery piece 36 is connected to the intermediate bus bar 1 to form a contact E, the other electrode is connected to the second jumper bus bar 22 to realize parallel connection, the second jumper bus bar 22 and the intermediate bus bar 1 have a contact D, and a third diode for protection is connected in series between the contact D and the contact E;
the electrode of the first cell piece 31 connected to the joint a is opposite to the electrode of the third cell piece 33 connected to the joint C, and the electrode of the third cell piece 33 connected to the joint C is the same as the electrode of the fifth cell piece 35 connected to the joint E.
Referring to fig. 3 and 4, the photovoltaic junction box 5 of the present embodiment is disposed between the junction a and the junction C, and includes a first diode 41 and a second diode 42; the first diode is connected between the connection point A and the connection point B in series, and the second diode is connected between the connection point B and the connection point C in series.
In this embodiment, the second junction box can be an existing conventional single diode junction box, such as a sub-junction box of a half-sheet assembly photovoltaic module.
The photovoltaic junction box provided by the embodiment of the utility model is applied to the multi-segment photovoltaic component, which needs two junction boxes, one of which is the conventional single-diode junction box, and the other is a double-diode junction box, the utility model provides a specific structure of the double-diode junction box, which can connect and protect the multi-segment photovoltaic component; the terminal box of this embodiment sets up two diodes in same terminal box, owing to need not repeated input/output end that sets up, compare in using two single diode terminal boxes can occupy littleer space, the area of its battery piece that shelters from is also littleer, on this basis, because photovoltaic cell piece its resistance can change when sheltered from and not sheltered from between the change, lead to performance changes such as subassembly power, two-sided rate, hot spot, consequently, use the terminal box of this embodiment can reduce because of the terminal box shelters from the influence to photovoltaic subassembly performance that the battery piece caused.
Example two
The present embodiment specifically discloses a photovoltaic junction box in the first embodiment, see the photovoltaic junction box 51 shown in fig. 5, the photovoltaic junction box 51 is configured to be disposed between the contact a and the contact C, and includes an output terminal 511 for outputting electric energy of a cell, a first diode 41, a second diode 42, a first conductive sheet 512 for electrically connecting the contact a, a second conductive sheet 513 for electrically connecting the contact B, and a third conductive sheet 514 for electrically connecting the contact C;
the first conductive plate 512 is electrically connected with the second conductive plate 513 through the first diode 41, and is electrically connected with the third conductive plate 514 through the first diode 41 and the second diode 42 in sequence;
the output terminal 511 is electrically connected to the first conductive sheet 512.
In an alternative embodiment, the second conductive sheet 513 is provided with a bus bar fixing hole 516 and a bus bar fixing hole 517;
the first jumper bus bar led out from the first cell plate electrode penetrates through the bus bar fixing hole 516 and is fixed on the second conducting strip 513, and the first jumper bus bar led out from the second cell plate electrode penetrates through the bus bar fixing hole 517 and is fixed on the second conducting strip 513.
In yet another alternative embodiment, the output end 511 of the photovoltaic junction box 51 is disposed at the left side of the photovoltaic junction box 51, and the first conductive sheet 512, the second conductive sheet 513 and the third conductive sheet 514 are all disposed at the middle of the photovoltaic junction box 51;
a bus bar fixing hole 515 is formed in the first conducting plate 512, a bus bar fixing hole 518 is formed in the third conducting plate 514, the 2 bus bar fixing holes are square holes, and the length directions of the bus bar fixing holes are the up-down directions of the photovoltaic junction box 51;
the 2 bus bar fixing holes 515 and 516 of the second conductive plate 513 are respectively disposed on the upper and lower sides of the second conductive plate 513, the 2 bus bar fixing holes are square holes, and the length direction is the left and right direction of the photovoltaic junction box 51.
In a further alternative embodiment, a bottom of the junction box directly below at least one of the bus bar fixing holes is provided with a bus bar guide hole; the busbar guiding hole is in a conical shape with a large opening at the bottom and is used for inserting the busbar.
EXAMPLE III
The present embodiment specifically discloses a photovoltaic junction box in another embodiment, referring to the photovoltaic junction box 52 shown in fig. 6, the photovoltaic junction box 52 is configured to be disposed between the contact a and the contact C, and includes an output end 521 for outputting electric energy of a cell, a first diode 41, a second diode 42, a first conductive sheet 522 for electrically connecting the contact a, a second conductive sheet 523 for electrically connecting the contact B, and a third conductive sheet 524 for electrically connecting the contact C;
the first conductive sheet 522 is electrically connected to the second conductive sheet 523 through the first diode 41, and is electrically connected to the third conductive sheet 524 through the first diode 41 and the second diode 42 in sequence;
the output end 521 is electrically connected to the first conductive sheet 522.
In an alternative embodiment, the second conductive plate 523 is provided with 1 bus bar fixing hole 536, and the bus bar fixing hole 536 is used for fixing a bus bar on the conductive plate;
the first jumper bus bars led out from the first cell plate electrode and the second cell plate electrode commonly pass through the bus bar fixing holes 536 and are fixed on the second conductive sheet 523.
In yet another alternative embodiment, the output end 521 of the pv junction box is disposed at the left side of the pv junction box, and the first conductive sheet 522, the second conductive sheet 523 and the third conductive sheet 524 are all disposed at the middle of the pv junction box;
the first conductive plate 522 is provided with the bus bar fixing hole 525, the third conductive plate 524 is provided with the bus bar fixing hole 527, the 2 bus bar fixing holes and the bus bar fixing hole 536 of the second conductive plate 523 are square holes, and the length directions of the 3 bus bar fixing holes are the vertical directions of the photovoltaic junction box.
In yet another alternative embodiment, the first diode 41 and/or the second diode 42 is one diode or two or more diodes connected in parallel. In this embodiment, the number of parallel diodes may be determined according to the actual required maximum current value, for example, if one diode supports a maximum current of 2A, when the current passing through the diode is maximum 4A, the diode needs to be configured with two parallel diodes.
In a further alternative embodiment, a bottom of the junction box directly below at least one of the bus bar fixing holes is provided with a bus bar guide hole; the bus bar guide hole is in a conical shape with a large opening at the bottom and is used for inserting a bus bar.
The disclosure of the embodiments of the present invention is only for the purpose of illustrating the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The photovoltaic junction box comprises a multi-segment photovoltaic assembly, wherein the multi-segment photovoltaic assembly comprises a middle bus bar, a first jumper bus bar, a first cell, a second cell, a third cell and a fourth cell; one electrodes of the first battery piece and the second battery piece are connected to the intermediate bus bar to form a contact A, the other electrodes are connected together through the first jumper bus bar so that the first battery piece and the second battery piece are connected in parallel, and the first jumper bus bar and the intermediate bus bar are provided with a contact B; one electrode of the third battery piece and one electrode of the fourth battery piece are connected to the middle bus bar forming contact C; the method is characterized in that:
the photovoltaic junction box is arranged between the junction A and the junction C and comprises a first diode, a second diode, a first conducting strip used for being electrically connected with the junction A, a second conducting strip used for being electrically connected with the junction B and a third conducting strip used for being electrically connected with the junction C;
the first conducting strip is electrically connected with the second conducting strip through the first diode, and is also electrically connected with the third conducting strip through the first diode and the second diode in sequence.
2. The photovoltaic junction box of claim 1,
the second conductive sheet is provided with 2 bus bar fixing holes;
the first jumper bus bar led out from the first battery piece electrode penetrates through one bus bar fixing hole and is fixed on the second conductive piece, and the first jumper bus bar led out from the second battery piece electrode penetrates through the other bus bar fixing hole and is fixed on the second conductive piece.
3. The photovoltaic junction box of claim 2,
the first conducting strip, the second conducting strip and the third conducting strip are all arranged in the middle of the photovoltaic junction box;
the first conducting strip and the third conducting strip are both provided with bus bar fixing holes, the 2 bus bar fixing holes are square holes, and the length directions of the 2 bus bars are the up-down directions of the photovoltaic junction box;
the 2 bus bar fixing holes of the second conducting plate are respectively formed in the upper side and the lower side of the second conducting plate, the 2 bus bar fixing holes are square holes, and the length directions of the 2 bus bars are the left direction and the right direction of the photovoltaic junction box.
4. The photovoltaic junction box of claim 1,
the second conductive sheet is provided with 1 bus bar fixing hole, and the bus bar fixing holes are used for fixing the bus bars on the conductive sheets;
the first jumper wire bus bar led out from the first battery piece electrode and the second battery piece electrode jointly penetrates through the bus bar fixing hole and is fixed on the second conductive piece.
5. The photovoltaic junction box of claim 4,
the first conducting strip, the second conducting strip and the third conducting strip are all arranged in the middle of the photovoltaic junction box;
the first conducting strip with all be provided with on the third conducting strip the busbar fixed orifices, these 2 busbar fixed orifices and the second conducting strip the busbar fixed orifices is the square hole, and the length direction of these 3 busbar fixed orifices is the upper and lower direction of photovoltaic terminal box.
6. The pv junction box of claim 1 wherein the first diode and/or the second diode is one diode or two or more diodes connected in parallel.
7. The photovoltaic junction box of any one of claims 2 to 5, wherein a bus bar guide hole is provided in a bottom of the junction box directly below at least one of the bus bar fixing holes; the bus bar guide hole is in a conical shape with a large opening at the bottom and is used for inserting a bus bar.
8. The photovoltaic junction box of claim 1, further comprising an output; the output end is electrically connected with the first conducting strip and used for outputting the electric energy of the battery piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223092807.1U CN218868191U (en) | 2022-11-21 | 2022-11-21 | Photovoltaic junction box of multi-segment photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223092807.1U CN218868191U (en) | 2022-11-21 | 2022-11-21 | Photovoltaic junction box of multi-segment photovoltaic module |
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| Publication Number | Publication Date |
|---|---|
| CN218868191U true CN218868191U (en) | 2023-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223092807.1U Active CN218868191U (en) | 2022-11-21 | 2022-11-21 | Photovoltaic junction box of multi-segment photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218868191U (en) |
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- 2022-11-21 CN CN202223092807.1U patent/CN218868191U/en active Active
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