CN220754784U - Junction box - Google Patents
Junction box Download PDFInfo
- Publication number
- CN220754784U CN220754784U CN202322050832.1U CN202322050832U CN220754784U CN 220754784 U CN220754784 U CN 220754784U CN 202322050832 U CN202322050832 U CN 202322050832U CN 220754784 U CN220754784 U CN 220754784U
- Authority
- CN
- China
- Prior art keywords
- electrode
- junction box
- bus bar
- pressing
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000003466 welding Methods 0.000 claims abstract description 42
- 229910000679 solder Inorganic materials 0.000 claims abstract description 12
- 239000000565 sealant Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000012800 visualization Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Abstract
The utility model discloses a junction box, wherein a first electrode and a second electrode are respectively and fixedly arranged in the junction box, the first electrode is provided with a first electrode pressing sheet, and the second electrode is provided with a second electrode pressing sheet; the first electrode pressing sheet is electrically connected with a first bus bar of the photovoltaic module, and the second electrode pressing sheet is electrically connected with a second bus bar of the photovoltaic module; a diode is connected between the first electrode and the second electrode; the electrode structure is electrically connected with the corresponding bus bar through the electrode pressing sheet, the welding of the electrode structure and the corresponding bus bar can be realized without adopting secondary solder as a lead wire, the rapid welding effect can be realized by matching with an automatic welding process, and the yield of the electrode structure is far higher than that of manual secondary welding in the prior art.
Description
Technical Field
The utility model belongs to the field of photovoltaic modules, and particularly relates to a junction box.
Background
In the field of photovoltaic modules, the junction box has the main functions of connecting electric power generated by the photovoltaic module with an external circuit and conducting current generated by the photovoltaic module. The existing junction box is usually welded with a bus bar of a photovoltaic module manually, the yield is poor, secondary tin adding is needed for welding manual leads, the operation is complex, and the efficiency is low.
For this reason, the applicant wishes to seek technical solutions to solve the above technical problems.
Disclosure of Invention
Therefore, the utility model aims to provide a junction box, wherein an electrode structure is electrically connected with a corresponding bus bar through an electrode pressing sheet, welding of the electrode structure and the corresponding bus bar can be realized without adopting secondary solder as a lead wire, a rapid welding effect can be realized by matching an automatic welding process, and the yield of the junction box is far higher than that of manual secondary welding in the prior art.
The technical scheme adopted by the utility model is as follows:
a junction box is provided, wherein a first electrode and a second electrode are fixedly installed inside the junction box respectively,
the first electrode is provided with a first electrode pressing sheet, and the second electrode is provided with a second electrode pressing sheet;
the first electrode pad is electrically connected with a first bus bar of the photovoltaic module, the second electrode pressing sheet is electrically connected with a second bus bar of the photovoltaic module;
a diode is connected between the first electrode and the second electrode.
Preferably, the first electrode tab includes a first tab portion and a first tab connection portion, the first tab portion being electrically connected to the first electrode through the first tab connection portion, the first tab portion being electrically connected to a first bus bar of the photovoltaic module; and/or the second electrode pressing piece comprises a second pressing piece part and a second pressing piece connecting part, wherein the second pressing piece part is electrically connected with the second electrode through the second pressing piece connecting part, and the second pressing piece part is electrically connected with a second bus bar of the photovoltaic module.
Preferably, the mounting height of the first presser portion is smaller than the mounting height of the first electrode, so that the first presser portion is closer to the first bus bar; and/or the mounting height of the second pressing part is smaller than the mounting height of the second electrode, so that the second pressing part is closer to the second bus bar.
Preferably, a first solder is placed between the first presser piece and the first bus bar, and the first presser piece and the first bus bar are welded into one body; and/or placing a second solder between the second pressing part and the second bus bar, and welding the second pressing part and the second bus bar into a whole.
Preferably, the first pressing piece part and/or the second pressing piece part are respectively provided with a first creeping welding hole and a second creeping welding hole.
Preferably, the first electrode and the second electrode are distributed inside the junction box in an insulated and mutually-installed manner; and a welding area is formed between the first electrode and the second electrode, and the first electrode pressing sheet and the second electrode pressing sheet are respectively positioned in the welding area.
Preferably, the welding area adopts a visual window; and/or the junction box is provided with an insulating rib between the first electrode pressing piece and the second electrode pressing piece.
Preferably, the second electrode includes a second electrode unit a located at one side of the first electrode and a second electrode unit B located at the other side of the first electrode, and the second electrode unit a is electrically connected with the second electrode unit B through a second electrode unit C; the second electrode unit A is provided with the second electrode pressing sheet, and a diode is connected between the second electrode unit B and the first electrode.
Preferably, the junction box comprises a junction box body and a box cover embedded in the periphery of the junction box body.
Preferably, the inside of terminal box body adopts the sealant to carry out the filling, wherein, the bottom of terminal box body is equipped with the overflow groove.
The application provides an electrode structure in the terminal box sets up electrode preforming structure, and electrode structure carries out the electricity through electrode preforming and the busbar that corresponds thereof and is connected, need not to adopt the secondary to add the welding that the welding material just can realize electrode structure and the busbar that corresponds as the lead wire, can match automatic weld technology and realize quick welding effect, and the yields of this application is far higher than the manual secondary welding of prior art.
Drawings
FIG. 1 is a schematic view of a junction box according to an embodiment of the present application;
FIG. 2 is a schematic view of the structure of FIG. 1 rotated by a certain angle;
FIG. 3 is an exploded view of FIG. 1;
FIG. 4 is a schematic view of the internal structure of the junction box (with the lid and sealant filling structure hidden) according to the embodiments of the present application;
fig. 5 is a schematic view of an electrical connection structure of a junction box in a photovoltaic module to which the junction box is applied according to an embodiment of the present application.
Detailed Description
The embodiment of the utility model discloses a junction box, wherein a first electrode and a second electrode are respectively and fixedly arranged in the junction box, the first electrode is provided with a first electrode pressing sheet, and the second electrode is provided with a second electrode pressing sheet; the first electrode pressing sheet is electrically connected with a first bus bar of the photovoltaic module, and the second electrode pressing sheet is electrically connected with a second bus bar of the photovoltaic module; a diode is connected between the first electrode and the second electrode.
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
Referring to fig. 1, 2, 3 and 4, a junction box 1 is shown, wherein a first electrode 10 (specifically, a copper sheet is adopted in the embodiment) and a second electrode 20 (specifically, a copper sheet is adopted in the embodiment) are fixedly installed in the junction box 1, wherein the first electrode 10 is provided with a first electrode pressing sheet 11, and the second electrode 20 is provided with a second electrode pressing sheet 21; the first electrode pressing sheet 11 is electrically connected with a first bus bar of the photovoltaic module, and the second electrode pressing sheet 21 is electrically connected with a second bus bar of the photovoltaic module; a diode 50 is connected between the first electrode 10 and the second electrode 20; it should be noted that, when the junction box of the present embodiment is applied as an end edge junction box of a photovoltaic module, the first electrode 10 or the second electrode 20 is further connected with a cable 60, and is connected with an external connection terminal through the cable 60; when the junction box of the embodiment is applied as an intermediate junction box of a photovoltaic module, no cable structure is required to be separately provided;
preferably, in the present embodiment, the first electrode tab 11 includes a first tab portion 11a and a first tab connection portion 11b, the first tab portion 11a is electrically connected to the first electrode 10 through the first tab connection portion 11b, and the first tab portion 11a is electrically connected to the first bus bar of the photovoltaic module; preferably, in the present embodiment, the second electrode tab 21 includes a second tab portion 21a and a second tab connection portion 21b, the second tab portion 21a is electrically connected to the second electrode 20 through the second tab connection portion 21b, and the second tab portion 21a is electrically connected to the second bus bar of the photovoltaic module.
Preferably, in order to facilitate matching of an efficient automatic welding process, in the present embodiment, the mounting height of the first presser portion 11a is smaller than the mounting height of the first electrode 10 such that the first presser portion 11a is closer to the first bus bar, and the first electrode presser 11 has an L-shape; the mounting height of the second presser piece portion 21a is smaller than the mounting height of the second electrode 20, so that the second presser piece portion 21a is closer to the second bus bar, and the second electrode presser piece 21 has an L-shape;
preferably, in the present embodiment, a first solder (specifically, tin solder is used in the present example) is placed between the first presser portion 11a and the first bus bar, and the first presser portion 11a and the first bus bar are welded as one body; placing a second solder (tin solder is specifically adopted in the embodiment) between the second pressing part 21a and the second bus bar, and welding the second pressing part 21a and the second bus bar into a whole; further preferably, in order to facilitate the welding efficiency, in the present embodiment, the first tab portion 11a and the second tab portion 21a are provided with a first welding hole 11c and a second welding hole 21c, respectively; wherein the first welding holes 11c and the second welding holes 21c are preferably cross-shaped, and in other embodiments, other shapes, such as a zig-zag shape or an arc shape, etc., can be used;
preferably, in order to facilitate the welding operation, in the present embodiment, the first electrode 10 and the second electrode 20 are distributed inside the junction box in an insulated and mutually mounted manner; the welding area 30 is formed between the first electrode 10 and the second electrode 20, the first electrode pressing piece 11a and the second electrode pressing piece 21a are respectively located in the welding area 30, so that rapid welding is facilitated, and further preferably, in order to observe the state after the welding is completed, a visual window is adopted in the welding area 30 to avoid the risk of cold welding; preferably, in the present embodiment, the terminal box is provided with the insulating rib 40 between the first electrode tab 11a and the second electrode tab 21a, to prevent a problem of short circuit between the first electrode 10 and the second electrode 20 due to solder flow during soldering.
Preferably, in order to facilitate efficient welding and mounting of the diode at the same time, in the present embodiment, the second electrode 20 includes a second electrode unit a located at one side of the first electrode 10 and a second electrode unit B located at the other side of the first electrode, the second electrode unit a being electrically connected to the second electrode unit B through a second electrode unit C; wherein, the second electrode unit A is provided with a second electrode pressing sheet 21, and a diode 50 is connected between the second electrode unit B and the first electrode 10; the second electrode unit a is connected to a cable 60.
Preferably, in the present embodiment, the junction box includes the junction box body 1a and the box cover 1b embedded in the inner periphery of the junction box body 1a, so that the overall height of the junction box can be reduced, and the influence of light-receiving surface shielding caused by shadow of the junction box when the junction box is mounted on the photovoltaic module can be reduced.
Preferably, in order to achieve the packaging protection effect on the electrical connection structure inside the junction box, in this embodiment, the inside of the junction box body 1a is filled with sealant to form a sealant filling structure 1c; the bottom of the junction box body 1a is provided with a glue overflow groove, so that the problem that sealant overflows can be avoided or reduced, and the bonding effect of the junction box body 1a and the sealant can be improved.
Please further refer to the photovoltaic module 2 shown in fig. 5, wherein the photovoltaic module 2 adopts two terminal blocks (illustrated by diodes in fig. 5) and 1 intermediate block (illustrated by diodes in fig. 5) provided in the present embodiment, respectively.
The embodiment provides an electrode structure in the terminal box is provided with an electrode pressing sheet structure, the electrode structure is electrically connected with a bus bar corresponding to the electrode structure through the electrode pressing sheet, welding of the electrode structure and the bus bar corresponding to the electrode structure can be realized without adopting secondary solder adding as a lead wire, a rapid welding effect can be realized by matching an automatic welding process, and the yield of the embodiment is far higher than that of manual secondary welding in the prior art.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. A junction box is characterized in that a first electrode and a second electrode are respectively and fixedly arranged in the junction box,
the first electrode is provided with a first electrode pressing sheet, and the second electrode is provided with a second electrode pressing sheet;
the first electrode pressing sheet is electrically connected with a first bus bar of the photovoltaic module, and the second electrode pressing sheet is electrically connected with a second bus bar of the photovoltaic module;
a diode is connected between the first electrode and the second electrode.
2. The junction box according to claim 1, wherein the first electrode tab includes a first tab portion and a first tab connection portion, the first tab portion being electrically connected to the first electrode through the first tab connection portion, the first tab portion being electrically connected to a first bus bar of a photovoltaic module; and/or the second electrode pressing piece comprises a second pressing piece part and a second pressing piece connecting part, wherein the second pressing piece part is electrically connected with the second electrode through the second pressing piece connecting part, and the second pressing piece part is electrically connected with a second bus bar of the photovoltaic module.
3. The junction box according to claim 2, wherein a mounting height of the first presser piece is smaller than a mounting height of the first electrode such that the first presser piece is closer to the first bus bar; and/or the mounting height of the second pressing part is smaller than the mounting height of the second electrode, so that the second pressing part is closer to the second bus bar.
4. A junction box according to claim 2 or 3, wherein a first solder is placed between the first presser piece and a first bus bar, the first presser piece and the first bus bar being welded as one body; and/or placing a second solder between the second pressing part and the second bus bar, and welding the second pressing part and the second bus bar into a whole.
5. The junction box according to claim 4, wherein the first and/or second pressing parts are provided with a first and a second creeping welding hole, respectively.
6. The junction box according to claim 1, characterized in that the first and second electrodes are distributed inside the junction box in an insulated mutual installation; and a welding area is formed between the first electrode and the second electrode, and the first electrode pressing sheet and the second electrode pressing sheet are respectively positioned in the welding area.
7. The junction box of claim 6 wherein said weld area employs a visualization window; and/or the junction box is provided with an insulating rib between the first electrode pressing piece and the second electrode pressing piece.
8. The junction box according to claim 1, wherein the second electrode comprises a second electrode unit a located at one side of the first electrode and a second electrode unit B located at the other side of the first electrode, the second electrode unit a being electrically connected to the second electrode unit B through a second electrode unit C; the second electrode unit A is provided with the second electrode pressing sheet, and a diode is connected between the second electrode unit B and the first electrode.
9. The junction box according to claim 1, wherein the junction box comprises a junction box body and a cover fitted around the junction box body.
10. The junction box according to claim 9, wherein the interior of the junction box body is filled with sealant, and wherein a glue overflow groove is formed in the bottom of the junction box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322050832.1U CN220754784U (en) | 2023-08-01 | 2023-08-01 | Junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322050832.1U CN220754784U (en) | 2023-08-01 | 2023-08-01 | Junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220754784U true CN220754784U (en) | 2024-04-09 |
Family
ID=90560348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322050832.1U Active CN220754784U (en) | 2023-08-01 | 2023-08-01 | Junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220754784U (en) |
-
2023
- 2023-08-01 CN CN202322050832.1U patent/CN220754784U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |