CN210053380U - Photovoltaic junction box and photovoltaic system - Google Patents
Photovoltaic junction box and photovoltaic system Download PDFInfo
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- CN210053380U CN210053380U CN201920814568.5U CN201920814568U CN210053380U CN 210053380 U CN210053380 U CN 210053380U CN 201920814568 U CN201920814568 U CN 201920814568U CN 210053380 U CN210053380 U CN 210053380U
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- junction box
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- 238000005476 soldering Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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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 belongs to the technical field of photovoltaic, and discloses a photovoltaic junction box and a photovoltaic system, wherein the photovoltaic junction box comprises a first junction box and a second junction box which are independently arranged, and the first junction box and the second junction box respectively comprise a box body, a base clamped in the box body, a conducting strip group connected on the base and a top cover buckled on the box body; the conducting strip group of the first junction box comprises two conducting strips arranged at intervals, the conducting strip group of the second junction box comprises three conducting strips arranged at intervals, diodes are connected between every two adjacent conducting strips in the first junction box and every two adjacent conducting strips in the second junction box, one of the conducting strips of the first junction box is connected with one pole of a power supply, one of the conducting strips of the second junction box is connected with the other pole of the power supply, and the conducting strips are provided with wiring ends used for connecting bus bars; the two diodes of the second junction box are arranged in parallel and are inclined at the same angle relative to the arrangement direction of the three conducting strips. The bus bar that photovoltaic terminal box used is shorter, strong adaptability.
Description
Technical Field
The utility model relates to a photovoltaic technology field especially relates to a photovoltaic terminal box and photovoltaic system.
Background
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.
In the prior art, a photovoltaic junction box is generally integral, a plurality of diodes are installed inside the integral photovoltaic junction box and connected among a plurality of rows of cell groups, and the plurality of rows of cell groups are connected with the photovoltaic junction box through bus bars.
Therefore, a photovoltaic junction box and a photovoltaic system are needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a photovoltaic terminal box, the busbar of use is shorter, strong adaptability.
To achieve the purpose, the utility model adopts the following technical proposal:
a photovoltaic junction box comprises a first junction box and a second junction box which are independently arranged, wherein each of the first junction box and the second junction box comprises a box body, a base clamped in the box body, a conducting strip group connected to the base and a top cover buckled on the box body;
the conducting strip group of the first junction box comprises two conducting strips arranged at intervals, the conducting strip group of the second junction box comprises three conducting strips arranged at intervals, diodes are connected between every two adjacent conducting strips in the first junction box and every two adjacent conducting strips in the second junction box, one of the conducting strips of the first junction box is connected with one pole of a power supply, one of the conducting strips of the second junction box is connected with the other pole of the power supply, and the conducting strips are provided with wiring ends for connecting bus bars;
the two diodes of the second junction box are arranged in parallel and are inclined at the same angle relative to the arrangement direction of the three conducting strips.
Preferably, the base is provided with a welding table corresponding to each conducting strip, and the wiring ends of the conducting strips are supported on the welding tables.
Preferably, an interval for passing the bus bar is provided between two adjacent soldering lands.
Preferably, a partition plate is arranged on the inner side surface of the box body corresponding to each interval to divide each interval into two parts.
Preferably, the conductive sheet is provided with a welding seat, and the welding seat is arranged corresponding to the end part of the diode.
Preferably, the soldering base includes two soldering lugs arranged at intervals, and the pin of the diode is soldered between the two soldering lugs.
Preferably, the base is provided with a receiving groove for receiving the diode.
Preferably, the base is provided with at least one positioning part corresponding to each conducting strip, and the conducting strips are correspondingly provided with positioning parts matched with the positioning parts.
Preferably, the inner side surface of the box body is provided with an elastic buckle, and the side surface of the base is provided with a clamping part which can be matched with the elastic buckle.
An object of the utility model is to provide a photovoltaic system, the busbar of being connected between photovoltaic terminal box and the solar cell and using among this photovoltaic system is less, strong adaptability.
To achieve the purpose, the utility model adopts the following technical proposal:
a photovoltaic system comprising a photovoltaic junction box as described above.
The utility model has the advantages that:
the utility model provides a photovoltaic junction box, which comprises a first junction box and a second junction box which are independently arranged, wherein the first junction box and the second junction box are respectively connected with corresponding cell groups, the conducting strip group of the first junction box comprises two conducting strips which are arranged at intervals, the conducting strip group of the second junction box comprises three conducting strips which are arranged at intervals, diodes are respectively connected between two adjacent conducting strips in the first junction box and two adjacent conducting strips in the second junction box, therefore, the first junction box can be used for connecting a group of cell groups, the second junction box can be used for connecting two groups of cell groups, the positions of the first junction box and the second junction box can be adaptively adjusted according to the positions of the cell groups in the photovoltaic assembly, and are respectively arranged at the positions which are close to the corresponding cell groups, and longer bus bars do not need to be led out from the cell groups to adapt to the positions of the junction boxes, compared with the traditional integral junction box, the photovoltaic junction box can shorten the length of a used bus bar; the two diodes of the second junction box are arranged in parallel, the two diodes are inclined at the same angle relative to the arrangement direction of the three conducting strips, and the two diodes are inclined, so that the structure of the second junction box is more compact, and the second junction box is convenient to install on a photovoltaic assembly.
Drawings
Fig. 1 is a schematic structural diagram of a first junction box of a photovoltaic junction box provided by the present invention;
fig. 2 is a schematic structural diagram of a second junction box of the photovoltaic junction box provided by the present invention;
fig. 3 is an exploded view of a first junction box of the photovoltaic junction box provided by the present invention;
fig. 4 is an exploded view of a second junction box of the photovoltaic junction box provided by the present invention;
fig. 5 is a schematic circuit diagram of the photovoltaic junction box provided by the present invention.
In the figure:
10. a first junction box;
20. a second junction box;
1. a box body; 11. a partition plate; 12. elastic buckle; 2. a base; 21. a positioning member; 22. a welding table; 23. an interval; 24. accommodating grooves; 3. a conducting strip group; 31. a conductive sheet; 311. a terminal; 312. A positioning part; 313. soldering lugs; 4. a top cover; 5. a diode; 6. a cable; 7. a connecting seat.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The embodiment provides a photovoltaic system, and this photovoltaic system includes solar energy component square matrix and solar charging controlling means, and in order to the electric energy output that converts after absorbing solar energy component square matrix light energy, photovoltaic system still includes the photovoltaic terminal box. The photovoltaic junction box is connected between the solar module matrix and the solar charging control device and used for connecting and protecting the solar photovoltaic module, connecting the electric power generated by the solar cell with an external circuit and conducting the current generated by the photovoltaic module.
Because the traditional integral junction box needs to use longer bus bars, the loss is larger, and in addition, the photovoltaic junction box is larger in size and is not suitable for installation. For this reason, the present embodiment provides a photovoltaic junction box.
As shown in fig. 1 to 4, the photovoltaic junction box provided in this embodiment includes a first junction box 10 and a second junction box 20 that are independently disposed, and each of the first junction box 10 and the second junction box 20 includes a box body 1, a base 2 clamped in the box body 1, a conductive sheet group 3 connected to the base 2, and a top cover 4 fastened on the box body 1; the first junction box 10 and the second junction box 20 are respectively connected to corresponding cell groups, the conducting strip group 3 of the first junction box 10 comprises two conducting strips 31 arranged at intervals, the conducting strip group 3 of the second junction box 20 comprises three conducting strips 31 arranged at intervals, and diodes 5 are connected between two adjacent conducting strips 31 in the first junction box 10 and two adjacent conducting strips 31 in the second junction box 20, so that the first junction box 10 can be used for connecting a group of cell groups, and the second junction box 20 can be used for connecting two groups of cell groups.
The positions of the first junction box 10 and the second junction box 20 can be adaptively adjusted according to the positions of the cell groups in the solar module, and the first junction box and the second junction box are respectively installed at the positions close to the corresponding cell groups, so that a longer bus bar does not need to be led out from the cell groups to adapt to the positions of the junction boxes.
One of the conducting strips 31 of the first junction box 10 is connected with one pole of the power supply of the solar charging control device, and one of the conducting strips 31 of the second junction box 20 is connected with the other pole of the power supply of the solar charging control device, so that the connection between the solar module array and the solar charging control device is realized. Specifically, the conductive sheet 31 is connected to the positive and negative poles of the power supply via the cable 6. The conducting strip 31 is provided with a riveting base which is riveted with the cable 6. Offer the U-shaped groove that is used for cable 6 to stretch out on the box body 1, the U-shaped groove is provided with can rather than complex connecting seat 7, and behind the U-shaped groove was stretched out to cable 6, connecting seat 7 and U-shaped groove welding to restrict cable 6 in the U-shaped inslot.
As shown in fig. 3 and 4, the box body 1 is a shape with an upper opening, a lower opening and four sides surrounding, so that the base 2 is connected with the box body 1, the inner side surface of the box body 1 is provided with an elastic buckle 12, and the side surface of the base 2 is provided with a clamping part which can be matched with the elastic buckle 12. The base 2 is made of an insulating material to facilitate mounting of the conductive plate 31.
In order to facilitate the accurate installation of the conducting plate 31 on the base 2, at least one positioning part 21 is arranged on the base 2 corresponding to each conducting plate 31, a positioning part 312 matched with the positioning part 21 is correspondingly arranged on the conducting plate 31, the accurate positioning connection between the battery plate and the base 2 can be ensured by arranging the positioning part 21 and the positioning part 312, and the diode 5 and the bus bar can be conveniently welded on the conducting plate 31. Specifically, the positioning element 21 may be a positioning column, and the positioning portion 312 may be a positioning hole. The positioning column is of a structure with the shaft diameter reduced from bottom to top so as to be convenient to insert into the positioning hole. Through the positioning mode of reference column and locating hole, the location is reliable, simple to operate.
The diode 5 is connected between the two conducting strips 31, and in order to facilitate the placement of the diode 5, the base 2 is provided with a receiving groove 24 for receiving the diode 5. The conductive sheet 31 is provided with a solder mount corresponding to the end of the diode 5. The bonding pad comprises two spaced bonding pads 313, and the pin of the diode 5 is bonded between the two bonding pads 313.
Referring to fig. 4, since two diodes 5 are disposed in the second junction box 20, in order to reduce the size of the second junction box 20, the two diodes 5 of the second junction box 20 are disposed in parallel, and are inclined at the same angle with respect to the arrangement direction of the three conductive sheets 31, and the two diodes 5 are inclined, so that the second junction box 20 has a more compact structure and is convenient to mount on a photovoltaic module.
The conductive plates 31 are provided with terminals 311 for connecting bus bars, and in order to better support the terminals 311, lands 22 are provided on the base 2 corresponding to each conductive plate 31, and the terminals 311 of the conductive plates 31 are supported on the lands 22. Between two adjacent lands 22, there is a space 23 for bus bars to pass through. The bus bar is extended from the bottom of the first terminal box 10 and the second terminal box 20, passes through the interval 23, and is welded to the terminal 311 of the conductive sheet 31. To avoid contact between the bus bars welded to the adjacent terminals 311, the inner side surface of the box body 1 is provided with a partition plate 11 corresponding to each section 23 to partition each section 23 into two parts for the two bus bars to pass through, respectively.
As shown in fig. 5, the photovoltaic junction box can be used to protect three groups of cell strings. The three groups of battery piece strings are sequentially connected in series, and when the photovoltaic junction box is connected, each diode 5 is respectively connected with one group of battery piece strings in parallel, so that the photovoltaic junction box has 6 connection points which are a, b, c, d, e and f. Specifically, the a contact and the b contact are respectively connected to the terminals 311 of the two conductive sheets 31 of the first junction box 10, the c contact and the f contact are respectively connected to the terminals 311 of the conductive sheets 31 on both sides of the second junction box 20, the d contact and the e contact share the middle conductive sheet 31 of the second junction box 20, and both the d contact and the e contact are connected to the terminal 311 of the middle conductive sheet 31. The photovoltaic junction box is connected with the solar assembly through the wiring mode.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A photovoltaic junction box is characterized by comprising a first junction box (10) and a second junction box (20) which are independently arranged, wherein each of the first junction box (10) and the second junction box (20) comprises a box body (1), a base (2) clamped in the box body (1), a conducting strip group (3) connected to the base (2) and a top cover (4) buckled on the box body (1);
the conducting strip group (3) of the first junction box (10) comprises two conducting strips (31) arranged at intervals, the conducting strip group (3) of the second junction box (20) comprises three conducting strips (31) arranged at intervals, diodes (5) are connected between every two adjacent conducting strips (31) in the first junction box (10) and every two adjacent conducting strips (31) in the second junction box (20), one of the conducting strips (31) of the first junction box (10) is connected with one pole of a power supply, one of the conducting strips (31) of the second junction box (20) is connected with the other pole of the power supply, and the conducting strip (31) is provided with a terminal (311) used for connecting a bus bar;
the two diodes (5) of the second junction box (20) are arranged in parallel and are inclined at the same angle relative to the arrangement direction of the three conducting strips (31).
2. The photovoltaic junction box according to claim 1, wherein a soldering station (22) is provided on the base (2) corresponding to each of the conductive sheets (31), the terminal (311) of the conductive sheet (31) being supported on the soldering station (22).
3. The photovoltaic junction box according to claim 2, characterized in that between two adjacent soldering lands (22) there is an interval (23) for the bus bar to pass through.
4. The photovoltaic junction box according to claim 3, characterized in that the inner side of the box (1) is provided with a partition plate (11) in correspondence of each of said sections (23) to divide each of said sections (23) into two parts.
5. The photovoltaic junction box according to claim 1, characterized in that said conductive sheet (31) is provided with a soldering seat corresponding to the end of said diode (5).
6. The photovoltaic junction box according to claim 5, characterized in that the soldering socket comprises two spaced soldering lugs (313), and the pins of the diode (5) are soldered between the two soldering lugs (313).
7. The photovoltaic junction box according to claim 1, characterized in that a housing groove (24) for housing the diode (5) is provided on the base (2).
8. The photovoltaic junction box according to claim 1, wherein at least one positioning member (21) is disposed on the base (2) corresponding to each conductive sheet (31), and a positioning portion (312) engaged with the positioning member (21) is disposed on the conductive sheet (31).
9. The photovoltaic junction box according to claim 1, wherein an elastic buckle (12) is arranged on the inner side surface of the box body (1), and a clamping portion capable of being matched with the elastic buckle (12) is arranged on the side surface of the base (2).
10. A photovoltaic system comprising the photovoltaic junction box of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920814568.5U CN210053380U (en) | 2019-05-31 | 2019-05-31 | Photovoltaic junction box and photovoltaic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920814568.5U CN210053380U (en) | 2019-05-31 | 2019-05-31 | Photovoltaic junction box and photovoltaic system |
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| Publication Number | Publication Date |
|---|---|
| CN210053380U true CN210053380U (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920814568.5U Active CN210053380U (en) | 2019-05-31 | 2019-05-31 | Photovoltaic junction box and photovoltaic system |
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| Country | Link |
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| CN (1) | CN210053380U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067545A (en) * | 2021-03-25 | 2021-07-02 | 苏州快可光伏电子股份有限公司 | Improved split type photovoltaic assembly junction box |
-
2019
- 2019-05-31 CN CN201920814568.5U patent/CN210053380U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067545A (en) * | 2021-03-25 | 2021-07-02 | 苏州快可光伏电子股份有限公司 | Improved split type photovoltaic assembly junction box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee after: Atlas sunshine Power Group Co.,Ltd. Patentee after: CHANGSHU TELIAN PRECISION DEVICES Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee before: CSI SOLAR POWER GROUP Co.,Ltd. Patentee before: CHANGSHU TELIAN PRECISION DEVICES Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |