CN211429264U - Photovoltaic junction box - Google Patents
Photovoltaic junction box Download PDFInfo
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- CN211429264U CN211429264U CN202020457109.9U CN202020457109U CN211429264U CN 211429264 U CN211429264 U CN 211429264U CN 202020457109 U CN202020457109 U CN 202020457109U CN 211429264 U CN211429264 U CN 211429264U
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- bus bar
- busbar
- photovoltaic module
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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 terminal box, including terminal box body, at least two with the connecting wire that the diode device electricity of terminal box body is connected, and with the busbar extension fixture that the other end of connecting wire is connected, busbar extension fixture includes busbar sealing device and sets up the busbar fixing device who just is connected with the connecting wire in busbar sealing device, space between busbar sealing device and the busbar fixing device constitutes the interface, and photovoltaic module's busbar inserts in the interface, busbar sealing device is fixed in on photovoltaic module through sealed glue, busbar sealing device with photovoltaic module's the connecting wire that connects of electricity, and with the busbar extension fixture that connects, busbar extension fixture is connected with the connecting wire, busbar sealing device with photovoltaic module's space constitutes the interfaceThe contact area is 15-70mm2And the junction box body is positioned outside the photovoltaic assembly. This photovoltaic terminal box is located outside photovoltaic module, has changed the current situation that the terminal box sheltered from photovoltaic module, and the maintenance and the change of the terminal box of being convenient for do benefit to photovoltaic module and terminal box heat dissipation simultaneously, have improved photovoltaic module power.
Description
Technical Field
The utility model relates to a photovoltaic module technical field especially relates to a photovoltaic terminal box.
Background
Solar photovoltaic power generation is a renewable energy power generation technology with ideal characteristics of sustainable development, and is utilized by people in more and more places in life. A lot of powerful two-sided photovoltaic module have appeared at present, the terminal box pattern that photovoltaic module used is unanimous with the single face subassembly, no matter be integral type terminal box or split type terminal box all use silica gel and the subassembly bonds together, large tracts of land box body not only can lead to the fact the subassembly to shelter from, reduce subassembly power, the shingling subassembly etc. of making some narrow battery pieces still can restrict battery piece quantity, extravagant encapsulating material, reduce the backplate, glass's rate of utilization, and the terminal box base area of using at present is big, seriously influence the subassembly heat dissipation. In addition, the diodes are arranged in the junction box, high temperature of about 150 ℃ can be generated when the diodes are started to work, the temperature of some diodes can even reach 200 ℃, and the junction box can be burnt down when the temperature is serious, so that components are damaged. The terminal box that uses now generally all is connected with the busbar that the subassembly was drawn forth with the terminal box electricity with the welded mode, in case the terminal box destroys, can't change, and whole subassembly can't reuse, causes very big waste. This is not in line with the development trend of present more and more exquisite, convenient scientific and technological product, and photovoltaic module urgently needs a convenient and practical, easy operation's terminal box.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a photovoltaic terminal box, this photovoltaic terminal box are located outside the photovoltaic module, have changed the current situation that the terminal box sheltered from photovoltaic module, and the maintenance and the change of the terminal box of being convenient for do benefit to photovoltaic module and terminal box heat dissipation simultaneously, have improved photovoltaic module power.
In order to solve the technical problem, the utility model provides a following technical scheme:
a photovoltaic junction box comprises a junction boxThe junction box comprises a body, at least two connecting wires electrically connected with a diode device of the junction box body, and a bus bar extending device connected with the other end of the connecting wires, wherein the bus bar extending device comprises a bus bar sealing device and a bus bar fixing device arranged in the bus bar sealing device and connected with the connecting wires, the bus bar sealing device and the space between the bus bar fixing devices form an insertion interface, a bus bar of a photovoltaic assembly is inserted into the insertion interface, the bus bar sealing device is fixed on the photovoltaic assembly through a sealant, and the contact area of the bus bar sealing device and the photovoltaic assembly is 15-70mm2And the junction box body is positioned outside the photovoltaic assembly.
Preferably, the contact surface of the bus bar sealing device and the photovoltaic module is a rectangle with the side length of 8-12 mm.
Preferably, the bus bar sealing device comprises a box and a cover matched with the box, the box is formed by pouring with the bus bar fixing device, the cover is formed by pouring with the end part of the connecting wire, and the connecting wire is in contact connection with the bus bar fixing device.
Preferably, the edge of the box is provided with a first sealing ring, and the box and the cover are connected in a sealing mode through the first sealing ring.
Preferably, the side surface of the bus bar fixing device is an arc surface which can be in contact fit with the bus bar.
Preferably, the number of the bus bars is equal to the number of the bus bar fixing devices, a plurality of the bus bar fixing devices are arranged in one bus bar sealing device, and the adjacent bus bar fixing devices are separated by insulating plastics.
Preferably, the number of the bus bars is equal to the number of the bus bar fixing devices, each of which is provided in one of the bus bar sealing devices.
Preferably, the junction box body comprises a box body and a box cover matched with the box body, a second sealing ring is arranged at the edge of the box body, and the box cover is connected with the box body in a sealing mode through the second sealing ring.
Preferably, the diode device in the box body comprises a metal sheet and a diode, and the metal sheet is a copper sheet or a copper alloy.
The utility model provides a photovoltaic terminal box, including terminal box body, connecting wire and busbar extension fixture, the terminal box body includes box body, lid, public female plug and sets up the diode device in the box body, and the terminal box body is common components and parts on the market. The number of the connecting wires is at least two, and the specific number is more than or equal to the number of the bus bars. One end of the connecting wire is electrically connected with the diode device in the junction box body, the other end of the connecting wire is electrically connected with the bus bar extending device, and the connecting wire electrically connects the junction box body and the bus bar extending device. The bus bar extending device comprises a bus bar sealing device and a bus bar fixing device, the bus bar fixing device is arranged in the bus bar sealing device, a space is arranged between the bus bar sealing device and the bus bar fixing device to form a plug interface, and the plug interface extends to the bottom of the bus bar sealing device. The busbar fixing device is a conductive piece and is connected with the connecting wire, and the busbar of the photovoltaic module is inserted into the insertion port and is pinched tightly by the clamp to complete the fixation of the busbar. The busbar of photovoltaic module switches on with busbar fixing device to this is convenient for maintenance and the change of terminal box body through busbar extension fixture with photovoltaic module's busbar and terminal box body intercommunication, can not cause the damage to photovoltaic module when dismantling the terminal box body.
When the bus bar of the photovoltaic module is connected and conducted with the bus bar fixing device, the bus bar sealing device is fixed on the photovoltaic module and is fixed through the sealant, so that the photovoltaic module is firmer; and the busbar sealing device is bonded on the photovoltaic module through the sealant, so that the invasion of moisture is prevented. The junction box body is positioned outside the photovoltaic assembly, the junction box body is not fixed on the photovoltaic assembly through sealing glue, the junction box body is not in contact with the photovoltaic assembly, the photovoltaic assembly is not shielded, and the power of the photovoltaic assembly is improved; the heat dissipation of the photovoltaic module is facilitated, and the service life of the photovoltaic module is prolonged; the photovoltaic module can not be influenced, and the junction box body is convenient to dissipate heat. ConfluenceCompared with the junction box body, the bus bar sealing device is much smaller in size, in other words, the contact area of the bus bar sealing device and the photovoltaic module is small, and the contact area of the bus bar sealing device and the photovoltaic module is about 15-70mm2Compared with the traditional junction box, the glue amount of the sealant needed for adhering the photovoltaic module is greatly reduced, and the overall cost of the photovoltaic module is reduced; the bus bar sealing device is basically consistent with the bus bar in size and cannot shield the photovoltaic module.
Use the embodiment of the utility model provides a technical scheme makes the terminal box body be located outside photovoltaic module, and the terminal box body can not cause to shelter from to the two-sided photovoltaic module back, has eliminated the hot spot effect at the photovoltaic module back, has changed the current situation that the terminal box sheltered from photovoltaic module, and the maintenance and the change of the terminal box of being convenient for do benefit to photovoltaic module and terminal box heat dissipation simultaneously, improve photovoltaic module power.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a photovoltaic junction box according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a junction box body;
fig. 3 is a schematic structural view of the bus bar extending device.
The drawings are numbered as follows:
the junction box comprises a junction box body 1, a connecting wire 2, a bus bar extending device 3, a box body 11, a diode device 12, a second sealing ring 13, a male plug and a female plug 14, a box 31, a bus bar fixing device 32, a first sealing ring 33, a diode 121 and a metal sheet 122.
Detailed Description
The core of the utility model is to provide a photovoltaic terminal box, this photovoltaic terminal box is located outside the photovoltaic module, has changed the current situation that the terminal box sheltered from photovoltaic module, and the maintenance and the change of the terminal box of being convenient for do benefit to photovoltaic module and terminal box heat dissipation simultaneously, have improved photovoltaic module power.
The technical solutions in the embodiments of the present invention will be described clearly and completely 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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, fig. 1 is a schematic structural view of a photovoltaic junction box according to an embodiment of the present invention; FIG. 2 is a schematic structural view of a junction box body; fig. 3 is a schematic structural view of the bus bar extending device.
In a specific embodiment, the utility model provides a photovoltaic terminal box, including terminal box body 1, at least two connecting wires 2 that are connected with the diode device 12 electricity of terminal box body 1, and the busbar extension fixture 3 of being connected with the other end of connecting wire 2, busbar extension fixture 3 includes busbar sealing device and sets up in busbar sealing device and the busbar fixing device 32 of being connected with connecting wire 2, the space between busbar sealing device and the busbar fixing device 32 constitutes the interface, photovoltaic module's busbar inserts in the interface, busbar sealing device is fixed in photovoltaic module on through sealed glue, busbar sealing device is 15-70mm with photovoltaic module's area of contact2And the junction box body 1 is positioned outside the photovoltaic module.
In the above structure, the photovoltaic junction box includes junction box body 1, connecting wire 2 and busbar extension fixture 3, and junction box body 1 includes box body 11, lid, public female plug 14 and sets up diode device 12 in box body 11, and junction box body 1 is common components and parts on the market.
The number of the connecting wires 2 is at least two, and the specific number is more than or equal to the number of the bus bars. One end of the connecting wire 2 is electrically connected with the diode device 12 in the junction box body 1, the other end of the connecting wire 2 is electrically connected with the bus bar extending device 3, and the connecting wire 2 electrically connects the junction box body 1 and the bus bar extending device 3.
The bus bar extension device 3 includes a bus bar sealing device and a bus bar fixing device 32, the bus bar fixing device 32 is disposed in the bus bar sealing device, a space is provided between the bus bar sealing device and the bus bar fixing device 32 to constitute a socket, and the socket extends to the bottom of the bus bar sealing device. The bus bar fixing device 32 is a conductive piece, the bus bar fixing device 32 is connected with the connecting wire 2, and the bus bar of the photovoltaic module is inserted into the inserting port and is pinched by the clamp to complete the fixation of the bus bar. The busbar of photovoltaic module switches on with busbar fixing device 32 to this is convenient for maintenance and the change of terminal box body 1 through busbar extension fixture 3 with photovoltaic module's busbar and terminal box body 1 intercommunication, can not cause the damage to photovoltaic module when dismantling terminal box body 1.
The bus bar sealing device is fixed on the photovoltaic module through the sealant, namely, the bus bar of the photovoltaic module is connected and conducted with the bus bar fixing device 32, and meanwhile, the bus bar sealing device is fixed on the photovoltaic module and is fixed through the sealant, so that the bus bar sealing device is firmer; and the busbar sealing device is bonded on the photovoltaic module through the sealant, so that the invasion of moisture is prevented.
Meanwhile, the junction box body 1 is positioned outside the photovoltaic assembly, the junction box body 1 is not fixed on the photovoltaic assembly through sealing glue, the junction box body 1 is not in contact with the photovoltaic assembly, the photovoltaic assembly is not shielded, and the power of the photovoltaic assembly is improved; the heat dissipation of the photovoltaic module is facilitated, and the service life of the photovoltaic module is prolonged; cannot influence the photovoltaic module, and is convenient for heat dissipation of the junction box body 1.
It should be noted that the bus bar sealing device is much smaller than the junction box body 1, in other words, the contact area between the bus bar sealing device and the photovoltaic module is very small, and the contact area between the bus bar sealing device and the photovoltaic module is about 15-70mm2For a split junction box, each busbar sealing device corresponds to 2 busbars, and the required area is about 15mm2(ii) a For the integrated junction box, each sealing device corresponds to 4 bus bars, and the area is about 60-70mm2。
Compared with the traditional junction box, the glue amount of the sealant needed for bonding the photovoltaic module is greatly reduced, and the overall cost of the photovoltaic module is reduced; the bus bar sealing device is basically consistent with the bus bar in size and cannot shield the photovoltaic module.
Use the embodiment of the utility model provides a technical scheme makes terminal box body 1 be located outside the photovoltaic module, and terminal box body 1 can not cause to shelter from to the two-sided photovoltaic module back, has eliminated the hot spot effect at the photovoltaic module back, has changed the current situation that the terminal box sheltered from photovoltaic module, and the maintenance and the change of the terminal box of being convenient for do benefit to photovoltaic module and terminal box heat dissipation simultaneously, improve photovoltaic module power.
On the basis of the above specific embodiment, the contact surface of the busbar sealing device and the photovoltaic module is a rectangle with the side length of 8-12mm, for example, the size of the box body 11 of the busbar sealing device is about 10 × 8mm, and the contact surface is relatively flat and convenient to bond; the busbar sealing device is small in size, namely the contact surface with the photovoltaic module is small, the glue amount of the sealant needed to be bonded on the photovoltaic module is greatly reduced, the overall cost is reduced, the heat dissipation of the photovoltaic module and the junction box is facilitated, and the power of the photovoltaic module is improved.
The utility model provides a photovoltaic terminal box, under the unchangeable condition of other parts, busbar sealing device includes box 31 and lid, and the lid cooperatees with box 31, and the shaping is pour with busbar fixing device 32 to box 31, only reserves the interface, connects reliably, and busbar fixing device 32 is fixed comparatively firmly, and busbar fixing device 32 is difficult not hard up. The shaping is pour with the tip of connecting wire 2 to the lid, and the lid is stretched out to the tip of connecting wire 2, and after the lid covered in box 31, connecting wire 2 was connected with the contact of busbar fixing device 32, need not connect connecting wire 2 and busbar fixing device 32 alone, has not only simplified the connection process, still ensures that connecting wire 2 and busbar fixing device 32 are reliable and stable to be connected.
Further optimize above-mentioned technical scheme, the edge of box 31 has first sealing washer 33, and box 31 passes through first sealing washer 33 sealing connection with the lid, and the leakproofness is better, need not the encapsulating, practices thrift the cost.
To the photovoltaic junction box in each of the above embodiments, the side surface of the bus bar fixing device 32 is an arc surface, the arc surface is consistent with the arc surface of the bus bar, the side surface of the bus bar fixing device 32 is in contact with the side surface of the bus bar in an attaching manner, and the bus bar fixing device 32 is connected with the bus bar more reliably and is not easy to contact badly or break.
The utility model provides a photovoltaic terminal box, under the unchangeable condition of other parts, the quantity of busbar equals with busbar fixing device 32's quantity, and a plurality of busbar fixing device 32 set up in a busbar sealing device, separate through insulating plastic between the adjacent busbar fixing device 32. That is, the bus bar sealing device includes a plurality of bus bar fixing devices 32, the plurality of bus bar fixing devices 32 are separated by insulating plastic, each bus bar fixing device 32 is independent, and each bus bar fixing device 32 is connected to one bus bar. At this time, the plurality of bus bar fixing devices 32 share one bus bar sealing device, the normal use of each bus bar fixing device 32 is not affected, and one bus bar sealing device is fixed on the photovoltaic module, so that the overall structure of the bus bar extension device 3 is simplified, the connection process is simplified, and the time is saved.
In another more reliable embodiment, the number of the bus bars is equal to the number of the bus bar fixing devices 32, each bus bar fixing device 32 is arranged in one bus bar sealing device, the bus bar fixing devices 32 correspond to the bus bar sealing devices one by one, the bus bar fixing devices 32 and the bus bar sealing devices form a set of bus bar extending devices 3, when a certain bus bar extending device 3 fails, the bus bar extending device 3 which can fail can be replaced only, so that the maintenance and the replacement are convenient, and the cost is reduced.
The utility model provides a photovoltaic terminal box, under the unchangeable condition of other parts, terminal box body 1 includes box body 11 and with box body 11 matched with lid, the edge of box body 11 has second sealing washer 13, lid and box body 11 pass through second sealing washer 13 sealing connection, and the leakproofness is better, need not the encapsulating, practices thrift the cost.
Further optimizing the above technical solution, the diode device 12 in the case 11 includes a metal sheet 122 and a diode 121, and the metal sheet 122 is a copper sheet or a copper alloy, and has good conductivity.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides a photovoltaic terminal box has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The photovoltaic junction box is characterized by comprising a junction box body (1), at least two connecting wires (2) electrically connected with diode devices (12) of the junction box body (1), and a bus bar extending device (3) connected with the other end of each connecting wire (2), wherein each bus bar extending device (3) comprises a bus bar sealing device and a bus bar fixing device (32) arranged in each bus bar sealing device and connected with the corresponding connecting wire (2), a space between each bus bar sealing device and the corresponding bus bar fixing device (32) forms a plug interface, a bus bar of a photovoltaic module is inserted into the plug interface, each bus bar sealing device is fixed on the photovoltaic module through sealant, and the contact area between each bus bar sealing device and the photovoltaic module is 15-70mm2The junction box body (1) is located outside the photovoltaic assembly.
2. The photovoltaic junction box of claim 1, wherein the contact surface of the busbar sealing device and the photovoltaic module is rectangular with 8-12mm sides.
3. The photovoltaic junction box according to claim 1, characterized in that the busbar sealing means comprise a box (31) and a cover cooperating with the box (31), the box (31) being cast with the busbar fixing means (32), the cover being cast with the end of the connecting wire (2), the connecting wire (2) being connected in contact with the busbar fixing means (32).
4. The photovoltaic junction box according to claim 3, characterized in that the edge of the box (31) has a first sealing ring (33), the box (31) and the cover being sealingly connected by the first sealing ring (33).
5. The photovoltaic junction box according to claim 1, wherein the side surface of the bus bar fixing device (32) is a circular arc surface capable of contact fitting with the bus bar.
6. The photovoltaic junction box according to claim 1, wherein the number of the bus bars is equal to the number of the bus bar fixing means (32), a plurality of the bus bar fixing means (32) are provided in one bus bar sealing means, and adjacent bus bar fixing means (32) are separated by insulating plastic.
7. The photovoltaic junction box according to claim 1, characterized in that the number of said bus bars is equal to the number of said bus bar fixing means (32), each of said bus bar fixing means (32) being provided in one of said bus bar sealing means.
8. The photovoltaic junction box of claim 1, characterized in that the junction box body (1) comprises a box body (11) and a box cover matched with the box body (11), the edge of the box body (11) is provided with a second sealing ring (13), and the box cover is connected with the box body (11) in a sealing manner through the second sealing ring (13).
9. The photovoltaic junction box according to claim 8, characterized in that the diode arrangement (12) in the box (11) comprises a metal sheet (122) and a diode (121), the metal sheet (122) being a copper sheet or a copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020457109.9U CN211429264U (en) | 2020-04-01 | 2020-04-01 | Photovoltaic junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020457109.9U CN211429264U (en) | 2020-04-01 | 2020-04-01 | Photovoltaic junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211429264U true CN211429264U (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020457109.9U Active CN211429264U (en) | 2020-04-01 | 2020-04-01 | Photovoltaic junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211429264U (en) |
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2020
- 2020-04-01 CN CN202020457109.9U patent/CN211429264U/en active Active
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