CN213754435U - Series-type integrated split type photovoltaic module junction box and photovoltaic module - Google Patents
Series-type integrated split type photovoltaic module junction box and photovoltaic module Download PDFInfo
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- CN213754435U CN213754435U CN202022298625.4U CN202022298625U CN213754435U CN 213754435 U CN213754435 U CN 213754435U CN 202022298625 U CN202022298625 U CN 202022298625U CN 213754435 U CN213754435 U CN 213754435U
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- junction box
- bypass protection
- photovoltaic module
- protection element
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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
Abstract
The utility model provides a series-type integrated split type photovoltaic module junction box, which comprises a left junction box, a middle junction box and a right junction box, wherein each junction box comprises a box cover, a box body and a bypass protection element module arranged in the box body, and the bypass protection element module comprises two bypass protection element sub-modules arranged in parallel; when the split type photovoltaic module junction box is applied to a photovoltaic module, six bypass protection devices in the three junction boxes form series connection and are respectively and correspondingly connected with photovoltaic module battery pack strings positioned on two sides of the junction box, so that the number of the junction boxes of the photovoltaic module and the use amount of cables are reduced; the six bypass protection elements form series connection on the circuit connection, and the cable is wired from the edge of the single side of the photovoltaic module; not only reduced material cost, made the installation simpler moreover, terminal box and cable have taken mounting area still less, increase photovoltaic module's effective working area, can make the outward appearance of subassembly more pleasing to the eye moreover.
Description
Technical Field
The utility model relates to a solar photovoltaic technology field, in particular to serial-type integrates photovoltaic module of split type photovoltaic module terminal box and applied this terminal box.
Background
In order to solve the increasingly severe problem of environmental pollution caused by the use of traditional fossil energy, the green renewable energy industry has been rapidly developed in recent years, and a solar cell power generation technology for generating power by utilizing the photovoltaic effect is an important green energy technology. The solar cell is made of materials capable of generating photovoltaic effect, such as silicon, gallium arsenide, indium selenium copper and the like, and can convert light energy into electric energy. At present, a photovoltaic module formed by combining a plurality of solar cells is widely used for building various photovoltaic power generation systems as a basic photovoltaic power generation unit, or a transparent film module is used as a curtain wall material of a building to build an energy-saving environment-friendly building.
In practical use, the photovoltaic module junction box is needed to lead out the electric energy generated by the photovoltaic module to be connected with an external load. Therefore, the photovoltaic module junction box is a key component of the photovoltaic module to construct various power generation systems. In addition, compare in traditional crystalline silicon solar cell photovoltaic module, film photovoltaic module has more beautiful outward appearance, has wider application scenario, for example, can regard as the photovoltaic curtain wall of large-scale building, and not only beautifully but also can make full use of wall area generates electricity. For a transparent thin film photovoltaic module, if a traditional junction box with a large area and a plurality of built-in wiring terminals is used, on one hand, the area of the junction box is large, the junction boxes need to be connected by long cables, and the junction box is not attractive when used on the transparent or semitransparent thin film photovoltaic module and the cost of the cables is high; in addition, the junction box with a large area occupies a large assembly installation area, which is not beneficial to effectively and fully utilizing the light receiving surface of the assembly to improve the power generation efficiency. In view of the problem, a split-type photovoltaic module junction box with a small volume as shown in fig. 1 is developed to be widely applied to photovoltaic modules, and the junction box generally comprises a left junction box 1, a middle junction box 2 and a right junction box 3 with small volumes, wherein a bypass diode is installed in each junction box, and corresponds to a battery string in a photovoltaic module unit; as shown in the schematic diagram of the circuit connection structure of the photovoltaic module shown in fig. 2, each photovoltaic module unit needs a group of split junction boxes, and therefore, an installation space of the junction boxes needs to be reserved between each photovoltaic module unit for installation of the junction boxes; moreover, the connection mode is that positive and negative cables are respectively led out from two sides of the assembly unit; this design, on the one hand, may require the installation of a plurality of junction boxes; on the other hand, two sides of the cable are required to be wired during cable connection, and besides the increase of material cost of material parts, the installation process is complex, and labor cost is consumed.
Disclosure of Invention
In view of the problem of foretell current split type photovoltaic module terminal box discovery in using, the utility model aims at providing a split type photovoltaic module terminal box is integrated to serial-type, its quantity that can save the terminal box makes the installation of terminal box and subassembly more convenient, avoids the terminal box to occupy too much subassembly effective work area moreover.
In order to achieve the purpose of the utility model, the utility model discloses a series-type integrated split type photovoltaic module junction box, which comprises a left junction box, a middle junction box and a right junction box, wherein the left junction box, the middle junction box and the right junction box respectively comprise a box cover, a box body and a bypass protection element module arranged in the box body, and the bypass protection element module comprises two bypass protection element sub-modules arranged in parallel; the bypass protection element sub-modules respectively comprise an anode conductive terminal, a cathode conductive terminal and a bypass protection device packaging block between the anode conductive terminal and the cathode conductive terminal, and the middle position of the box body is provided with at least one isolation rib plate for isolating two bypass protection element sub-modules in the box body; the upper end and the lower end of the right side of the box body of the right junction box are respectively provided with a cable connector; correspondingly, cable riveting parts are respectively arranged at the end parts of the right conductive terminals of the two bypass protection element submodules in the right junction box; when the split type photovoltaic assembly junction box is applied to a photovoltaic assembly, six bypass protection devices in the three junction boxes form series connection.
Preferably, the cable riveting part is of a U-shaped structure, and the arrangement direction of the U-shaped structure is perpendicular to the length direction of the box body; the outgoing direction of the cable connector is consistent with the arrangement direction of the U-shaped structure.
Preferably, the bypass protection element module in the middle junction box has the same structural design as the bypass protection element module in the right junction box.
Preferably, the first bypass protection element module in the left junction box includes a first bypass protection element sub-module and a second bypass protection element sub-module which are arranged side by side, and one conductive terminal of the first bypass protection element sub-module is electrically connected with one conductive terminal of the second bypass protection element sub-module.
Preferably, one conductive terminal of the first bypass protection element submodule is the same as one conductive terminal of the second bypass protection element submodule.
Preferably, the bypass protection element modules in the left junction box, the middle junction box and the right junction box are the same in structural design; the first bypass protection element module in the left junction box comprises a first bypass protection element submodule and a second bypass protection element submodule which are arranged side by side, and one conductive terminal of the first bypass protection element submodule is electrically connected with one conductive terminal of the second bypass protection element submodule through a connecting piece.
Still preferably, the bypass protection device is a bypass diode or an integrated circuit module having a bypass protection function.
According to another object of the present invention, the present invention provides a photovoltaic module, wherein the photovoltaic module comprises a plurality of photovoltaic module units, and the above-mentioned series-connected integrated split type photovoltaic module junction box is arranged between every two photovoltaic module units; each photovoltaic module unit comprises a first group of strings, a second group of strings and a third group of strings, and the first group of strings, the second group of strings and the third group of strings of the photovoltaic module unit positioned on one side of the junction box are respectively connected with bypass protection element sub-modules arranged on the upper row in the left junction box, the middle junction box and the right junction box; the first group of strings, the second group of strings and the third group of strings of the photovoltaic module unit on the other side are respectively connected with the bypass protection element sub-modules on the lower row in the left junction box, the middle junction box and the right junction box; the positive cable and the negative cable are respectively connected and fixed with cable riveting parts at the end parts of the conductive terminals of the two bypass protection element sub-modules in the right junction box, are respectively led out from upper and lower cable connectors of the box body, and are routed along one side edge of the photovoltaic module unit; six bypass protection devices in the junction box form a series connection.
Preferably, the bypass protection device is a bypass diode or an integrated circuit module with a bypass protection function.
The utility model has the advantages that the two bypass protection element sub-modules are arranged in each junction box body of the series-type integrated split type photovoltaic module junction box, and correspondingly connected with the photovoltaic module battery strings on the two sides of the junction box respectively, so that the junction box quantity of the photovoltaic modules and the use amount of cables are reduced; the six bypass protection elements form series connection on the circuit connection, and the cable is wired from the edge of the single side of the photovoltaic module; not only reduced material cost, made the installation simpler moreover, terminal box and cable have taken mounting area still less, increase photovoltaic module's effective working area, can make the outward appearance of subassembly more pleasing to the eye moreover.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings. Wherein:
fig. 1 is an exploded view of a split photovoltaic module junction box of the prior art;
FIG. 2 is a schematic diagram showing the circuit connection of the components of the existing split photovoltaic junction box;
fig. 3 is an exploded schematic view (perspective view) of the series integrated split type photovoltaic module junction box of the present invention;
fig. 4 is a schematic view of an explosion plane structure of the series-type integrated split-type photovoltaic module junction box of the present invention;
FIG. 5 is a schematic view of the conductive terminals in the right junction box of the photovoltaic module junction box of FIG. 3;
FIG. 6 is a schematic structural view of a right junction box body of the photovoltaic module junction box of FIG. 3;
FIG. 7 is a schematic plan view of the photovoltaic module junction box of FIG. 3 with right terminal box conductive terminals mounted in the box body;
FIG. 8 is a schematic view of the conductive terminals in the left junction box of the photovoltaic module junction box of FIG. 3;
FIG. 9 is a schematic structural view of a left junction box body of the photovoltaic module junction box of FIG. 3;
FIG. 10 is a schematic plan view of the photovoltaic module junction box of FIG. 3 with the left junction box conductive terminals mounted in the box body;
fig. 11 is a schematic structural view of the conductive terminals in the middle junction box of the photovoltaic module junction box of fig. 3;
FIG. 12 is a schematic structural view of a junction box body of the photovoltaic module junction box of FIG. 3;
fig. 13 is a schematic plan view of the photovoltaic module junction box of fig. 3 showing the conductive terminals of the junction box mounted in the box body;
fig. 14 shows a schematic diagram of the circuit connection principle of the assembly when the series-type integrated split type photovoltaic module junction box of the present invention is applied.
Some elements and labels in the figures are:
10-a left junction box; 20-middle junction box; 30-a right junction box; 11. 21, 31-box cover;
12. 22, 32-bypass protection element module; 13. 23, 33-cartridge; 40-cable wires;
304-cable wire fixing block; 121. 122, 221, 222, 321, 322-bypass protection elements;
1201. 1202, 1203, 2201, 2202, 2203, 2204, 3201, 3202, 3203, 3204-conductive terminals;
101. 102, 201, 202, 301, 302-bypass protection element sub-module
Detailed Description
The structure characteristics and advantages of the present invention are described in detail as follows.
Referring to fig. 3 to 13 together, the tandem type integrated split type photovoltaic module junction box of an embodiment of the present invention includes a left junction box 10, a middle junction box 20 and a right junction box 30, which each include a box cover (in the figure, a first box cover 11, a second box cover 21 and a third box cover 31, respectively), a box body (in the figure, a first box body 13, a second box body 23 and a third box body 33, respectively), and a bypass protection element module (in the figure, a first bypass protection element module 12, a second bypass protection element module 22 and a third bypass protection element module 32, respectively) disposed in the box body, wherein the bypass protection element module includes two bypass protection element sub-modules disposed in parallel; the bypass protection element sub-modules each include an anode conductive terminal, a cathode conductive terminal, and a diode package block between the anode conductive terminal and the cathode conductive terminal, taking the third bypass protection element module 32 in the right junction box 30 as an example, referring to fig. 5, the third bypass protection element module 32 includes two bypass protection element sub-modules 301 and 302 arranged side by side in a box body independently from each other, the bypass protection element sub-module 301 includes a first conductive terminal 3201, a second conductive terminal 3202, and a diode package block 321 arranged between the first conductive terminal 3201 and the second conductive terminal 3202, and diodes in the diode package block 321 are electrically connected with the first conductive terminal 3201 and the second conductive terminal 3202, respectively; similarly, the bypass protection element submodule 302 includes a first conductive terminal 3203, a second conductive terminal 3204, and a diode package block 322 disposed between the first conductive terminal 3203 and the second conductive terminal 3204, wherein diodes in the diode package block 322 are electrically connected to the first conductive terminal 3203 and the second conductive terminal 3204, respectively; referring to fig. 6, a plurality of isolation rib plates 3301 are disposed in the middle of the third box 33 to separate the bypass protection element sub-modules 301 and 302 from each other, so as to prevent the bypass protection element sub-modules from making electrical contact with each other; the upper end and the lower end of the right side of the third box body 33 are respectively provided with a cable connector 3302 for connecting and fixing the positive and negative lead-out cables; correspondingly, cable riveting parts 3205 are respectively arranged at the right side end parts of the bypass protection element sub-modules 301 and 302; in a preferred embodiment, the cable riveting part 3205 is a U-shaped structure; more excellent, the U type structure set up the length direction of direction and box body perpendicular, so, it is perpendicular for also being the length direction with the box body to walk the line direction after the cable conductor riveting is fixed, can make things convenient for the cable conductor to walk the line along the edge of photovoltaic module unit, need not to buckle, both pleasing to the eye, save space, can guarantee joint strength again.
Referring to the schematic structural diagrams of the middle junction box 20 shown in fig. 11 to 13, the structural design of the bypass protection element module 22 in the box body 23 is the same as that of the right junction box, and is not described herein again; because the middle junction box does not need to be connected with a cable, a connecting port structure is not designed on the box body 23; although no cable is required to be connected, for the purpose of reducing the production cost of the junction box (reducing the forming die of the conductive terminals) and facilitating the management of parts in the production process, the cable riveting portion is still provided at one end of the conductive terminal of the bypass protection element module 22 in the junction box.
Referring to the schematic structure of the left junction box 10 shown in fig. 8 to 10, unlike the right and middle junction boxes, since it is necessary to connect 6 bypass diodes in three junction boxes in series, the first bypass protection element module 12 in the box body 13 of the left junction box includes two first bypass protection element sub-modules 101 and second bypass protection element sub-modules 102 arranged side by side, and one conductive terminal is electrically connected, as shown in fig. 8, the second conductive terminal 1202 of the first bypass protection element sub-module 101 is the same as the first conductive terminal of the second bypass protection element sub-module 102, because the diodes of the first bypass protection element sub-module 101 and the diodes of the second bypass protection element sub-module 102 are connected in series, the conductive terminal 1202 is electrically connected to the negative pole of the diodes in the first bypass protection element sub-module 101 when electrically connected, in the second bypass protection element submodule 102 is electrically connected to the positive pole of the diode.
In another preferred embodiment, in order to standardize the bypass protection element module, reduce the production cost of parts and facilitate the material management in the production process, the structure of the bypass protection element module 12 in the left junction box can be designed to be the same as that of the middle junction box and the right junction box, and then two conductive terminals at the ends of two bypass protection element sub-modules in the box body are welded and connected through a connecting piece such as a copper sheet to form conductive connection.
Referring to fig. 14, the circuit connection schematic diagram of the junction box of the present invention when applied to a photovoltaic module is that, when applied, the junction box of the present invention is placed between two photovoltaic module units, each photovoltaic module unit includes a first group of strings 1001, a second group of strings 1002, and a third group of strings 1003, because each split junction box includes two bypass protection element sub-modules arranged side by side, the first group of strings 1001, the second group of strings 1002, and the third group of strings 1003 of the photovoltaic module unit on one side (for example, above the junction box) are respectively connected with the bypass protection element sub-modules 101, 201, 301 on the upper row in the left, middle, and right junction boxes; the first group 1001, the second group 1002 and the third group 1003 of the photovoltaic module units on the other side (below the junction box) are respectively connected with the bypass protection element sub-modules 102, 202 and 302 in the lower rows of the left junction box, the middle junction box and the right junction box; the positive cable and the negative cable are respectively connected and fixed with cable riveting parts at the end parts of bypass protection element sub-modules 301 and 302 in the right junction box, and are respectively led out from upper and lower cable connectors of the box body, and the cables are arranged along one side edge of the photovoltaic module unit.
The above embodiments of the present invention are for convenience of explanation, the junction box is divided into left, middle and right junction boxes, and the cable connecting end is disposed on the right junction box, it should be understood that this explanation is not a limitation to the technical solution of the present invention, and when in use, the user can vertically place the split junction box according to the direction of the battery assembly, and the split junction box is divided into upper, middle and lower junction boxes; the cable connecting end can be arranged on any terminal box at two ends of the split type terminal box. These should be considered as equivalent embodiments of the invention.
In addition, in the above embodiments of the present invention, the bypass protection element module is exemplified by a diode as the bypass protection device, and it should be understood that an integrated circuit module having a bypass protection function may also be used as the bypass protection device.
The utility model discloses a serial-type integrated split type photovoltaic module terminal box, set up two bypass protection component submodule pieces in each terminal box body, correspond respectively and connect the photovoltaic module battery string that is located the terminal box both sides, reduced the terminal box quantity of photovoltaic module and the use amount of cable conductor; the six bypass protection elements form series connection on the circuit connection, and the cable is wired from the edge of the single side of the photovoltaic module; not only reduced material cost, made the installation simpler moreover, terminal box and cable have taken mounting area still less, increase photovoltaic module's effective working area, can make the outward appearance of subassembly more pleasing to the eye moreover.
The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications or changes without departing from the spirit of the present invention.
Claims (9)
1. The series-connection integrated split type photovoltaic module junction box is characterized by comprising a left junction box, a middle junction box and a right junction box, wherein the left junction box, the middle junction box and the right junction box respectively comprise a box cover, a box body and a bypass protection element module arranged in the box body; the bypass protection element sub-modules respectively comprise an anode conductive terminal, a cathode conductive terminal and a bypass protection device packaging block between the anode conductive terminal and the cathode conductive terminal, and the middle position of the box body is provided with at least one isolation rib plate for isolating two bypass protection element sub-modules in the box body; the upper end and the lower end of the right side of the box body of the right junction box are respectively provided with a cable connector; correspondingly, cable riveting parts are respectively arranged at the end parts of the right conductive terminals of the two bypass protection element submodules in the right junction box; when the split type photovoltaic assembly junction box is applied to a photovoltaic assembly, six bypass protection devices in the three junction boxes form series connection.
2. The series connection type integrated split type photovoltaic module junction box according to claim 1, wherein the cable riveting part is of a U-shaped structure, and the arrangement direction of the U-shaped structure is perpendicular to the length direction of the box body; the outgoing direction of the cable connector is consistent with the arrangement direction of the U-shaped structure.
3. The series-connection integrated split photovoltaic module junction box of claim 1 or 2, wherein the bypass protection element module in the middle junction box has the same structural design as the bypass protection element module in the right junction box.
4. The series-type integrated split photovoltaic module junction box of claim 3, wherein the first bypass protection element module in the left junction box comprises two first bypass protection element sub-modules and a second bypass protection element sub-module arranged side by side, and one conductive terminal of the first bypass protection element sub-module is electrically connected with one conductive terminal of the second bypass protection element sub-module.
5. The series-type integrated split photovoltaic module junction box of claim 4, wherein one conductive terminal of the first bypass protection element sub-module is the same as one conductive terminal of the second bypass protection element sub-module.
6. The series-connection integrated split type photovoltaic module junction box according to claim 1 or 2, wherein the bypass protection element modules in the left junction box, the middle junction box and the right junction box are the same in structural design; the first bypass protection element module in the left junction box comprises a first bypass protection element submodule and a second bypass protection element submodule which are arranged side by side, and one conductive terminal of the first bypass protection element submodule is electrically connected with one conductive terminal of the second bypass protection element submodule through a connecting piece.
7. The series-type integrated split photovoltaic module junction box according to claim 1 or 2, wherein the bypass protection device is a bypass diode or an integrated circuit module with bypass protection function.
8. A photovoltaic module, which is characterized in that the photovoltaic module comprises a plurality of photovoltaic module units, and the series-connection type integrated split type photovoltaic module junction box as claimed in any one of claims 1 to 6 is arranged between every two photovoltaic module units; each photovoltaic module unit comprises a first group of strings, a second group of strings and a third group of strings, and the first group of strings, the second group of strings and the third group of strings of the photovoltaic module unit positioned on one side of the junction box are respectively connected with bypass protection element sub-modules arranged on the upper row in the left junction box, the middle junction box and the right junction box; the first group of strings, the second group of strings and the third group of strings of the photovoltaic module unit on the other side are respectively connected with the bypass protection element sub-modules on the lower row in the left junction box, the middle junction box and the right junction box; the positive cable and the negative cable are respectively connected and fixed with cable riveting parts at the end parts of the conductive terminals of the two bypass protection element sub-modules in the right junction box, are respectively led out from upper and lower cable connectors of the box body, and are routed along one side edge of the photovoltaic module unit; six bypass protection devices in the junction box form a series connection.
9. The photovoltaic module of claim 8, wherein the bypass protection device is a bypass diode or an integrated circuit module having a bypass protection function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022298625.4U CN213754435U (en) | 2020-10-15 | 2020-10-15 | Series-type integrated split type photovoltaic module junction box and photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022298625.4U CN213754435U (en) | 2020-10-15 | 2020-10-15 | Series-type integrated split type photovoltaic module junction box and photovoltaic module |
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| CN213754435U true CN213754435U (en) | 2021-07-20 |
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| CN202022298625.4U Active CN213754435U (en) | 2020-10-15 | 2020-10-15 | Series-type integrated split type photovoltaic module junction box and photovoltaic module |
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| CN (1) | CN213754435U (en) |
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