CN220692840U - Grid-connected and off-grid switching device of photovoltaic inverter - Google Patents
Grid-connected and off-grid switching device of photovoltaic inverter Download PDFInfo
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- CN220692840U CN220692840U CN202322372443.0U CN202322372443U CN220692840U CN 220692840 U CN220692840 U CN 220692840U CN 202322372443 U CN202322372443 U CN 202322372443U CN 220692840 U CN220692840 U CN 220692840U
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- wiring
- photovoltaic inverter
- terminals
- switching device
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- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Abstract
The grid-connected and off-grid switching device of the photovoltaic inverter comprises a wiring seat, wherein a plurality of grid-connected wiring terminals and off-grid wiring terminals are oppositely arranged on the wiring seat; the wiring seat is also rotationally connected with a control main body, the control main body is provided with a plurality of photovoltaic inverter connecting wires corresponding to grid-connected wiring terminals or off-grid wiring terminals, a single photovoltaic inverter connecting wire is simultaneously connected with two wiring contact pieces, and the two wiring contact pieces are respectively used for contacting the grid-connected wiring terminals or the off-grid wiring terminals; the control main body can rotate, and the wiring contact pieces cannot contact the grid-connected wiring terminal or the off-grid wiring terminal at the same time in the same period. Different from the existing structure, the device can synchronously separate and combine a plurality of wiring terminals, and the same wiring contact piece is only used for being connected with off-grid or connected with grid, grid connection or off-grid switching is carried out in a mode of setting two groups of wiring contact pieces, and the two groups of wiring contact pieces are not adjacent and are not contacted, so that the condition of mutual interference can be avoided.
Description
Technical Field
The utility model relates to the technical field of photovoltaic power generation, in particular to a grid-connected and off-grid switching device of a photovoltaic inverter.
Background
When the photovoltaic inverter is switched in the operation mode, synchronous switching with a plurality of wiring terminals is needed, mutual interference among the plurality of wiring terminals is avoided in the switching process, the adjacent wiring terminals are needed to be prevented from being too close to each other due to different functions of the wiring terminals, components and parts are damaged mutually, and in addition, after the conventional friction type contact mode is used for many times, the problem of poor contact is easy to occur, and if the plurality of wiring contact pieces are replaced simultaneously, the process is complex.
Disclosure of Invention
The utility model provides a grid-connected and off-grid switching device of a photovoltaic inverter, which aims to solve the problem that the spacing between grid-connected and off-grid wiring terminals is too small.
The technical scheme of the utility model is as follows:
the grid-connected and off-grid switching device of the photovoltaic inverter comprises a wiring seat, wherein a plurality of grid-connected wiring terminals and off-grid wiring terminals are oppositely arranged on the wiring seat;
the wiring seat is also rotationally connected with a control main body, the control main body is provided with a plurality of photovoltaic inverter connecting wires corresponding to grid-connected wiring terminals or off-grid wiring terminals, a single photovoltaic inverter connecting wire is simultaneously connected with two wiring contact pieces, and the two wiring contact pieces are respectively used for contacting the grid-connected wiring terminals or the off-grid wiring terminals;
the control main body can rotate, and the wiring contact pieces cannot contact the grid-connected wiring terminal or the off-grid wiring terminal at the same time in the same period.
The device is different from the existing structure, a plurality of wiring terminals can be simultaneously separated and combined, and two non-adjacent wiring contact pieces are arranged on the same photovoltaic inverter connecting wire, so that electric arcs can be avoided and damage to the device can be avoided.
The wiring seat and the control main body are arranged in a mode that the wiring seat is provided with a groove, and one end of the control main body is always clung to the inner wall of the groove. The grooves are divided by the control main body, so that contact of adjacent off-grid and grid-connected wiring terminals can be avoided.
In order to further improve safety, the wire connection tabs are respectively arranged on opposite sides of the control body. The mutual intervention of the connection lugs for contacting the grid-connected or off-grid connection terminals can be avoided.
As a preferable scheme, the grid-connected wiring terminal and the off-grid wiring terminal are arranged on opposite sides of the groove.
The mode of driving the control main body to switch the state is that one end of the control main body far away from the groove is rotatably provided with a conversion handle. The off-grid and on-grid working states can be switched by means of an electric or manual driving switching handle.
In order to realize synchronous opening and closing, a plurality of grid-connected wiring terminals and off-grid wiring terminals are arranged along a horizontal straight line. The synchronous opening and closing of a plurality of wiring terminals can be realized in the same period.
The control main body comprises a rotating base, wherein a plurality of overlapping seats are sequentially arranged on the rotating base, and a photovoltaic inverter connecting wire is arranged between the rotating base and the overlapping seats or between adjacent overlapping seats. The connecting wires of the photovoltaic inverter are isolated through the superposition seats, so that the mutual interference is avoided.
The mode of realizing the fixation of the superposition seat and the rotating base is that a plurality of superposition seats are simultaneously fixed with the rotating base through connecting pieces. The connecting piece is a fastening screw rod, the fastening screw rod penetrates through the plurality of overlapped seats to be connected with the rotating base, and the plurality of overlapped seats can be separated after the connecting piece is detached.
As a preferred aspect, a plurality of the photovoltaic inverter connection lines are arranged in a vertical direction.
In order to facilitate overhauling the device, the wire holder is detachably connected with the control main body. And the wiring seat can be detachably connected with the two reference plates through the fastening bolts, and the control main body penetrates through the reference plates and can rotate.
The utility model has the beneficial effects that: the grid-connected and off-grid switching device of the photovoltaic inverter can set the grid-connected and off-grid wiring terminals on the plane which is arranged at intervals by the control main body in a mode of simultaneously connecting two wiring contact pieces on the same photovoltaic inverter connecting wire, so that mutual interference and damage of the wiring terminals can be avoided.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model.
In the drawings:
FIG. 1 is a schematic diagram of the front view of the present utility model (not connected to the grid);
FIG. 2 is a schematic diagram of the front view structure of the present utility model (off-grid or grid-connected operation state);
FIG. 3 is a schematic diagram of the front view of the control body of the present utility model;
FIG. 4 is a schematic side view of the control body of the present utility model;
FIG. 5 is a schematic rear view of the control body of the present utility model;
the components represented by the reference numerals in the figures are:
1. a wire holder; 2. grid-connected wiring terminals; 3. off-grid wiring terminals; 4. a control main body; 41. rotating the base; 42. a stacking base; 43. a connecting piece; 5. photovoltaic inverter connecting wires; 6. a wiring contact piece; 7. the handle is switched.
Detailed Description
The grid-connected and off-grid switching device of the photovoltaic inverter shown in fig. 1 and 2 comprises a wire holder 1, wherein a plurality of grid-connected connecting terminals 2 and off-grid connecting terminals 3 are oppositely arranged on the wire holder 1, the grid-connected connecting terminals 2 and the off-grid connecting terminals 3 are the same in number and opposite in position, the grid-connected connecting terminals 2 and the off-grid connecting terminals 3 can be synchronously separated and combined when the operation state is switched, and the grid-connected connecting terminals 2 and the off-grid connecting terminals 3 are far apart, so that mutual interference can be avoided.
In order to switch the above operation states, as shown in fig. 1 and 2, the wire holder 1 is further rotatably connected with a control main body 4, and the control main body 4 is provided with a plurality of photovoltaic inverter connection wires 5 corresponding to the grid-connected connection terminals 2 or the off-grid connection terminals 3, when the photovoltaic inverter connection wires 5 are in contact with the grid-connected connection terminals 2, the device enters the grid-connected operation state, and when the photovoltaic inverter connection wires 5 are in contact with the off-grid connection terminals 2, the device enters the off-grid operation state, the conventional structure only sets a single connection contact piece 6 on the photovoltaic inverter connection wires 5 and is respectively in contact with the grid-connected connection terminals 2 or the off-grid connection terminals 3 in a sliding manner, and the device is different from the above manner, as shown in fig. 3 and 5, the single photovoltaic inverter connection wires 5 are simultaneously connected with two connection contact pieces 6, and the two connection contact pieces 6 are respectively used for contacting the grid-connected connection terminals 2 or the off-grid connection terminals 3, so that the device can isolate the connection pieces 6 through the control main body 4, and further avoid interference of adjacent components.
In addition, in order to realize the necessary switching function, the control main body 4 can rotate, and the wiring contact pieces 6 cannot simultaneously contact the grid-connected wiring terminal 2 or the off-grid wiring terminal 3 in the same period, so that safety accidents are prevented from occurring.
As shown in fig. 1 and 2, the above-mentioned wire holder 1 and the control main body 4 are arranged in such a way that the wire holder 1 is provided with a groove, the inner wall of the groove is an arc plane, the center of the circle is concentric with the rotation axis of the control main body 4, and meanwhile, one end of the control main body 4 is always clung to the inner wall of the groove, that is, one end of the control main body 4 is also an arc plane, and through the lamination of the two planes, the control main body 4 can be utilized to isolate while ensuring normal rotation, thereby avoiding the contact of components and parts, and avoiding the influence of electric arcs.
By providing the above-described structure, as shown in fig. 3 and 5, the wire contact pieces 6 are provided on opposite sides of the control body 4, respectively. The mutual intervention of the connection contacts 6 for contacting the grid-connection or off-grid connection terminals 3 can be avoided, with the control body 4 between them being isolated, and the control body 4 needs to be selected for the insulation structure.
Correspondingly, in order to adapt to the setting position of the connection lug 6, the grid-connected connection terminal 2 and the off-grid connection terminal 3 are arranged on opposite sides of the groove, as shown in fig. 2, after the control main body 4 rotates to a certain angle, the connection lug 6 and the connection terminal can be attached and state switching can be realized.
The adjacent photovoltaic inverter connecting lines 5 need to be isolated, for this reason, as shown in fig. 3 and 4, the specific structure of the control main body 4 is that the control main body 4 includes a rotating base 41, and the rotating base 41 is rotationally connected with the wire holder 1 through a rotating shaft, and in order to facilitate maintenance of the device, the wire holder 1 is detachably connected with the control main body 4. Specifically, the wire holder 1 is detachably connected with two reference plates through fastening bolts, and the control main body 4 penetrates through the reference plates and can rotate. After the fastening bolts are disassembled and the reference plates are disassembled, the control main body 4 can be integrally disassembled and overhauled, and after the overhauling task is completed, the control main body is arranged on the wire holder 1 again.
Then, a plurality of stacking bases 42 are sequentially arranged on the rotating base 41, the structures of the stacking bases 42 are sequentially reduced, and the photovoltaic inverter connecting wires 5 are arranged between the rotating base 41 and the stacking bases 42 or between adjacent stacking bases 42. The photovoltaic inverter connection lines 5 are isolated by the overlying mounts 42, avoiding the occurrence of mutual interference.
As shown in the drawing, the above-mentioned fixing of the stacking base 42 to the rotating base 41 is achieved in such a manner that a plurality of stacking bases 42 are simultaneously fixed to the rotating base 41 by the connecting members 43. The connecting member 43 is a fastening screw, and the fastening screw penetrates the plurality of stacking bases 42 to be connected to the rotating base 41, and after the disassembly, the plurality of stacking bases 42 can be separated and the arrangement and installation of the photovoltaic inverter connecting wire 5 can be performed.
And in order to facilitate connection of the photovoltaic inverter connection lines 5, a plurality of the photovoltaic inverter connection lines 5 are arranged in a vertical direction.
Accordingly, as shown in fig. 4, a plurality of the grid-connected terminals 2 and the off-grid terminals 3 are each arranged along a horizontal straight line. After reaching the same state, the synchronous opening and closing of the plurality of wiring terminals can be realized in the same period.
Finally, the control main body 4 is driven to switch states in such a way that a switching handle 7 is rotatably arranged at one end of the control main body 4 far away from the groove. The off-grid and on-grid operation states can be switched by means of the electric or manual driving of the switching handle 7.
Can realize through above-mentioned structure, be different from current structure, this device can divide and close a plurality of binding post simultaneously, and same photovoltaic inverter connecting wire 5 sets up two non-adjacent wiring contact pieces 6, consequently can avoid appearing electric arc and cause the damage to the device.
Claims (10)
1. The grid-connected and off-grid switching device of the photovoltaic inverter is characterized by comprising a wire holder (1), wherein a plurality of grid-connected connecting terminals (2) and off-grid connecting terminals (3) are oppositely arranged on the wire holder (1);
the wiring seat (1) is also rotationally connected with a control main body (4), the control main body (4) is provided with a plurality of photovoltaic inverter connecting wires (5) corresponding to the grid-connected wiring terminals (2) or the off-grid wiring terminals (3), a single photovoltaic inverter connecting wire (5) is simultaneously connected with two wiring contact pieces (6), and the two wiring contact pieces (6) are respectively used for contacting the grid-connected wiring terminals (2) or the off-grid wiring terminals (3);
the control main body (4) can rotate, and the wiring contact pieces (6) cannot simultaneously contact the grid-connected wiring terminal (2) or the off-grid wiring terminal (3) in the same period.
2. The grid-connected and off-grid switching device of the photovoltaic inverter according to claim 1, wherein the wire holder (1) is provided with a groove, and one end of the control main body (4) is always clung to the inner wall of the groove.
3. Grid-connected and off-grid switching device of a photovoltaic inverter according to claim 2, characterized in that the connection contacts (6) are arranged on opposite sides of the control body (4) respectively.
4. Grid-connected and off-grid switching device of a photovoltaic inverter according to claim 2, characterized in that the grid-connected connection terminal (2) and the off-grid connection terminal (3) are arranged on opposite sides of the groove.
5. Grid-connected and off-grid switching device of a photovoltaic inverter according to claim 2, characterized in that the control body (4) is provided with a conversion handle (7) in a rotating way at the end far away from the groove.
6. Grid-connected and off-grid switching device of a photovoltaic inverter according to claim 1, characterized in that a plurality of said grid-connected terminals (2) and off-grid terminals (3) are arranged along a horizontal straight line.
7. Grid-connected and off-grid switching device of a photovoltaic inverter according to claim 1, characterized in that the control body (4) comprises a rotating base (41), a plurality of overlapping seats (42) are sequentially arranged on the rotating base (41), and the photovoltaic inverter connecting wire (5) is arranged between the rotating base (41) and the overlapping seats (42) or between adjacent overlapping seats (42).
8. The grid-connected and off-grid switching device of a photovoltaic inverter according to claim 7, wherein a plurality of the stacking bases (42) are simultaneously fixed with the rotating base (41) through connecting pieces (43).
9. Grid-connected and off-grid switching device of a photovoltaic inverter according to claim 7, characterized in that a plurality of the photovoltaic inverter connection lines (5) are arranged in a vertical direction.
10. Grid-connected and off-grid switching device of a photovoltaic inverter according to claim 1, characterized in that the wire holder (1) is detachably connected with the control body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322372443.0U CN220692840U (en) | 2023-09-01 | 2023-09-01 | Grid-connected and off-grid switching device of photovoltaic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322372443.0U CN220692840U (en) | 2023-09-01 | 2023-09-01 | Grid-connected and off-grid switching device of photovoltaic inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220692840U true CN220692840U (en) | 2024-03-29 |
Family
ID=90407187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322372443.0U Active CN220692840U (en) | 2023-09-01 | 2023-09-01 | Grid-connected and off-grid switching device of photovoltaic inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220692840U (en) |
-
2023
- 2023-09-01 CN CN202322372443.0U patent/CN220692840U/en active Active
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