CN215378865U - Flow distribution box and photovoltaic power station - Google Patents

Flow distribution box and photovoltaic power station Download PDF

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Publication number
CN215378865U
CN215378865U CN202121856845.2U CN202121856845U CN215378865U CN 215378865 U CN215378865 U CN 215378865U CN 202121856845 U CN202121856845 U CN 202121856845U CN 215378865 U CN215378865 U CN 215378865U
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China
Prior art keywords
copper bar
output
input
shunt
box
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CN202121856845.2U
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Chinese (zh)
Inventor
项超
曾凡超
高伟
葛良志
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Sungrow Power Supply Co Ltd
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Sungrow Power Supply Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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Abstract

The utility model discloses a shunt box and a photovoltaic power station, wherein the shunt box comprises: the box body is arranged in the box body, and the input copper bar and the output copper bar are electrically connected; wherein, the input copper bar is provided with the reposition of redundant personnel input, and the output copper bar is provided with two at least reposition of redundant personnel outputs. In the shunt box disclosed by the utility model, because the output copper bar is provided with at least two shunt output ends, the requirement of multi-path input of the string-type inverter can be met, so that the string-type inverter can be installed; meanwhile, in the shunting box, the output of the confluence box is shunted through the input copper bar and the output copper bar, the structure is simple, the production is convenient, and the cost is low.

Description

Flow distribution box and photovoltaic power station
Technical Field
The utility model relates to the technical field of photovoltaic power generation, in particular to a flow distribution box and a photovoltaic power station.
Background
In photovoltaic power plants, it is often the case that the inverter needs to be replaced for various reasons. When replacing, the new inverter and the original inverter may be of different types, for example, the photovoltaic power station is originally a centralized inverter, and the string inverter is considered when replacing.
The combiner box connected with the centralized inverter is an output, namely the centralized inverter is an input, and the group string inverter is a multi-input. Therefore, when the group string inverter is used to replace the original centralized inverter, the output of the combiner box needs to be divided.
In summary, how to shunt the output of the combiner box to install the string inverter is an urgent problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a shunt box for mounting a string inverter.
Another object of the utility model is to provide a photovoltaic power plant comprising the above described shunt box.
In order to achieve the purpose, the utility model provides the following technical scheme:
a manifold, comprising: the box body is arranged in the box body, and the input copper bar and the output copper bar are electrically connected; the input copper bar is provided with a shunting input end, and the output copper bar is provided with at least two shunting output ends.
Optionally, the input copper bar and the output copper bar are vertically arranged.
Optionally, the input copper bar is arranged along a vertical direction, and the output copper bar is arranged along a horizontal direction.
Optionally, the input copper bar is located at an end of the output copper bar, and the output copper bar is located between two ends of the input copper bar.
Optionally, the number of the input copper bars is two and is respectively a first positive copper bar and a first negative copper bar, and the number of the output copper bars is two and is respectively a second positive copper bar and a second negative copper bar; the first positive electrode copper bar and the first negative electrode copper bar are located between the second positive electrode copper bar and the second negative electrode copper bar.
Optionally, the shunt output is higher than the shunt input;
the box is provided with the input via hole that is used for supplying the input cable to pass through and is used for supplying the output cable to pass through, wherein, the output via hole is higher than the input via hole.
Optionally, the number of the shunt input ends on each input copper bar is at least two, and the shunt input ends are sequentially distributed along the length direction of the input copper bar.
Optionally, the number of the shunt output ends in each output copper row is at least two, and the shunt output ends in each row are sequentially distributed along the length direction of the output copper row; in any two rows, one row of the shunt output ends and the other row of the shunt output ends are distributed in a staggered mode.
Optionally, the flow distribution box further comprises a mounting rack arranged in the box body, and the input copper bars and the output copper bars are fixed on the mounting rack in an insulating mode.
Optionally, the input copper bar is detachably fixed to the mounting rack through a first insulator, the output copper bar is detachably fixed to the mounting rack through a second insulator, and the input copper bar is detachably electrically connected with the output copper bar.
Optionally, one end of the output copper bar is fixed to the mounting frame through a second insulator, and the other end of the output copper bar is fixedly connected and electrically connected with the input copper bar.
Optionally, the shunt input end and the shunt output end are both through holes.
Optionally, the flow distribution box further includes: the input wiring terminal is arranged at the shunt input end, and the output wiring terminal is arranged at the shunt output end; and the input wiring terminal and the output wiring terminal are OT terminals.
The application method of the flow distribution box provided by the utility model comprises the following steps: the shunt input end is electrically connected with the combiner box, and the shunt output end is electrically connected with the group string type inverter.
In the shunt box provided by the utility model, because the output copper bar is provided with at least two shunt output ends, the requirement of multi-path input of the string-type inverter can be met, so that the string-type inverter can be installed; meanwhile, in the shunting box, the output of the confluence box is shunted through the input copper bar and the output copper bar, the structure is simple, the production is convenient, and the cost is low.
Based on the shunt box, the utility model further provides a photovoltaic power station which comprises a string-type inverter and any one of the shunt boxes, and the shunt box is electrically connected with the string-type inverter.
Optionally, the shunt box is located at a bottom side of the string inverter.
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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flow distribution box according to an embodiment of the present invention;
FIG. 2 is a front view of a diverter box provided in accordance with an embodiment of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a bottom view of a diverter box provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic installation diagram of a shunt box and a string inverter according to an embodiment of the present invention;
fig. 6 is a front view of the structure shown in fig. 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, a flow distribution box provided by an embodiment of the present invention includes: the box body is internally provided with an input copper bar 101 and an output copper bar 102 which are electrically connected; the input copper bar 101 is provided with a shunt input end 107, and the output copper bar 102 is provided with at least two shunt output ends 105.
It is understood that the shunt input 107 is used to electrically connect to the output of the combiner box, and the shunt output 105 is used to electrically connect to the input of the string inverter 200.
The shunting box is a direct current shunting box, the input copper bars 101 are two positive input copper bars and two negative input copper bars respectively, and the output copper bars 102 are two positive output copper bars and two negative output copper bars respectively. As shown in fig. 2, the left input copper bar 101 may be selected as an anode input copper bar, the left output copper bar 102 may be selected as a cathode output copper bar, the right input copper bar 102 may be selected as a cathode input copper bar, and the right output copper bar 102 may be selected as a cathode output copper bar.
Above-mentioned anodal input copper bar is provided with anodal reposition of redundant personnel input, negative pole input copper bar is provided with negative pole reposition of redundant personnel input, anodal output copper bar is provided with anodal reposition of redundant personnel output, negative pole output copper bar is provided with negative pole reposition of redundant personnel output, anodal reposition of redundant personnel input and negative pole reposition of redundant personnel input all are called reposition of redundant personnel input 107, anodal reposition of redundant personnel output and negative pole reposition of redundant personnel output all are called reposition of redundant personnel output 105.
The use method of the flow distribution box comprises the following steps: is electrically connected to the combiner box via a shunt input 107 and to the string inverter 200 via a shunt output 105.
In the shunt box provided by the utility model, as the output copper bar 102 is provided with at least two shunt output ends 105, the requirement of multi-path input of the string inverter 200 can be met, so that the string inverter 200 can be installed; meanwhile, in the shunting box, the output of the confluence box is shunted through the input copper bar 101 and the output copper bar 102, and the shunting box is simple in structure, convenient to produce and low in cost.
The specific distribution of the input copper bars 101 and the output copper bars 102 is selected according to actual needs. Optionally, the input copper bar 101 and the output copper bar 102 are arranged vertically, so that the distance between the shunt input end 107 and the shunt output end 105 is conveniently increased, and thus the electrical connection is convenient; and also facilitates reducing the volume of the whole structure.
Further, the input copper bar 101 is arranged along the vertical direction, and the output copper bar 102 is arranged along the horizontal direction, so that the height of the whole flow distribution box can be reduced. Of course, the input copper bar 101 can be arranged along the horizontal direction, and the output copper bar 102 can be arranged along the vertical direction, so that the length of the whole shunting box can be reduced.
It should be noted that the input copper bar 101 is arranged in the vertical direction or the horizontal direction, which means that the input copper bar 101 is arranged in the vertical direction or the horizontal direction after the shunt box is installed in the photovoltaic power station; the output copper bar 102 is arranged along the horizontal direction or the vertical direction, which means that the output copper bar 102 is arranged along the horizontal direction or the vertical direction after the shunt box is installed in the photovoltaic power station.
In practical applications, the input copper bar 101 and the output copper bar 102 may be distributed in other directions, and are not limited to the above embodiments.
For convenience of electrical connection, the input copper bar 101 is optionally located at an end of the output copper bar 102, and the output copper bar 102 is located between two ends of the input copper bar 101.
The shunt box can also achieve the purpose of facilitating electric connection in other modes. Specifically, the positive input copper bar and the negative input copper bar are positioned between the positive output copper bar and the negative output copper bar. It can be understood that the positive input copper bar is close to the positive output copper bar, and the negative input copper bar is close to the negative output copper bar.
In a photovoltaic power station, the string inverter 200 is usually higher than the shunt box 100, and for the convenience of electrical connection, the shunt output terminal 105 can be selected to be higher than the shunt input terminal 107, so that wiring is facilitated, and cables are saved.
The shunt output 105 and the shunt input 107 may be located inside the housing or outside the housing. To improve the protection performance, the selectable shunt output 105 and the shunt input 107 are both located in the box. At this time, the box body is provided with an input via hole for the input cable to pass through and an output via hole for the output cable to pass through, wherein the output via hole is higher than the input via hole.
It is understood that the input cables are used to electrically connect the combiner boxes to the shunt inputs 107 and the output cables are used to electrically connect the string inverter 200 to the shunt outputs 105.
Further, the output via hole is formed in the top end of the box body, and the input via hole is formed in the bottom end of the box body. Of course, the output via hole may be disposed at the top of the side plate of the box, and the input via hole may be disposed at the bottom of the side plate of the box, which is not limited to the above embodiments.
In the above-mentioned shunt box, if the box is provided with the input via hole that is used for supplying the input cable to pass through and is used for supplying the output via hole that the output cable passes through, in order to improve barrier propterty, the optional input via hole is provided with first water proof terminal 108, and the output via hole is provided with second water proof terminal 106.
It is understood that the first watertight terminal 108 is capable of passing an incoming cable and the second watertight terminal 106 is capable of passing an outgoing cable. The specific structure and type of the first watertight terminal 108 and the second watertight terminal 106 are selected according to actual needs, and this embodiment does not limit this.
In the shunting box, one shunting input end 107 on each input copper bar 101 corresponds to one confluence box. Therefore, there may be one or more than two shunt input ends 107 on each input copper bar 101. If there are at least two shunt input ends 107 on each input copper bar 101, in order to facilitate wiring, the shunt input ends 107 on the same input copper bar 101 can be selected to be sequentially distributed along the length direction of the input copper bar 101.
In practical applications, there are usually one or two combiner boxes, so that two shunt input ends 107 can be selected on each input copper bar 101, and at most two combiner boxes can be connected. Of course, the number of the shunt input ends 107 on each input copper bar 101 may be selected to be other according to the number of the combiner boxes, which is not limited in this embodiment.
In the shunt box, the number of shunt output terminals 105 is selected according to the string inverter 200. To improve the versatility, the more the shunt output terminals 105 on each output copper bar 102, the better. Currently, the number of input paths of the string inverter 200 is eighteen, which is commonly used, and thus, eighteen shunt output terminals 105 are provided on each output copper bar 102, as shown in fig. 2. In this case, the string inverter 200 can satisfy eighteen lines at most, and of course, the present invention can also be applied to a string inverter 200 having less than eighteen input lines. Therefore, the shunt box can be matched with various string inverters 200.
The distribution form of the shunt output end 105 on the output copper bar 102 is designed according to the requirement. For example, the shunt output terminals 105 are distributed on the output copper bar 102 in rows, and the number of the rows may be one or more than two. In order to increase the number of the shunt output ends 105 and improve the universality, at least two rows of the shunt output ends 105 in each output copper bar 102 can be selected, and the shunt output ends 105 in each row are sequentially distributed along the length direction of the output copper bar 102.
For convenience of wiring, the shunt output terminals 105 of any two rows may be alternatively distributed with the shunt output terminals 105 of the other row.
In order to facilitate installation of the input copper bar 101 and the output copper bar 102, the selected shunting box further comprises an installation frame 104 arranged in the box body, and the input copper bar 101 and the output copper bar 102 are both fixed on the installation frame 104 in an insulating mode.
The specific structure of the mounting frame 104 is selected according to actual needs, and this embodiment is not limited to this.
Specifically, the mounting rack 104 may be located on one side of the input copper bar 101 and also located on one side of the output copper bar 102. For the convenience of installation, the mounting rack 104 is optionally located on the same side of the input copper bar 101 and the output copper bar 102.
In order to reduce the volume, the output copper bar 102 may be selected to be located on one side of the input copper bar 101 close to the mounting frame 104. Of course, the output copper bar 102 may be located on a side of the input copper bar 101 away from the mounting frame 104, and is not limited to the above limitation.
In the shunt box, for the convenience of installation, the input copper bar 101 may be fixed to the mounting frame 104 through a first insulator 109, and the output copper bar 102 is fixed to the mounting frame 104 through a second insulator 111. To facilitate the disassembly, the input copper bar 101 is detachably fixed to the mounting frame 104 through a first insulator 109, and the output copper bar 102 is detachably fixed to the mounting frame 104 through a second insulator 111.
For the sake of detachability, the first insulator 109 and the second insulator 111 may be both female insulators, such as double-sided female insulators. At this time, the first threaded connector sequentially penetrates through the input copper bar 101 and the first insulator 109 and then is fixed to the mounting frame 104, so that the input copper bar 101 is detachably fixed to the mounting frame 104; the second threaded connector sequentially penetrates through the output copper bar 102 and the second insulator 111 and then is fixed to the mounting frame 104, so that the output copper bar 102 is detachably fixed to the mounting frame 104.
The number and distribution of the first insulator 109 and the second insulator 111 are selected according to actual needs.
For the convenience of detachment, the above-mentioned input copper bar 101 and output copper bar 102 may be selected to be detachably and electrically connected, for example, the input copper bar 101 and output copper bar 102 are detachably and electrically connected through a threaded connector. Of course, the electrical connection between the input copper bar 101 and the output copper bar 102 can be selected to be non-detachable, and is not limited to the above-mentioned embodiment.
In order to simplify the structure, one end of the optional output copper bar 102 is fixed to the mounting frame 104 through the second insulator 111, and the other end of the output copper bar 102 is fixedly connected and electrically connected with the input copper bar 101. As shown in fig. 2, there are two first insulators 109 corresponding to each input copper bar 101, and one second insulator 111 corresponding to each output copper bar 102, and the second insulator 111 is located between the two first insulators 109.
In the shunt box, the specific structures of the shunt input end 107 and the shunt output end 105 are selected according to actual needs. For ease of manufacture and simplicity of construction, the shunt input 107 and the shunt output 105 are optionally through holes.
In order to facilitate wiring and simplify the structure, the shunt box further comprises: an input terminal 108 provided at the shunt input 107, and an output terminal 106 provided at the shunt output 105. It will be appreciated that the input wires are electrically connected to the input terminals 108 and the output wires are electrically connected to the output terminals 106.
For the types of the input connection terminals 108 and the output connection terminals 106, for example, the input connection terminals 108 and the output connection terminals 106 are all OT terminals according to practical selection, which is not limited in this embodiment.
In the shunt box, the specific structure of the box body is selected according to actual needs. For the convenience of installation, the box body can be selected to include a box body 103 and a box cover fixedly connected with the box body 103. For maintenance, the box cover and the box body 103 can be detachably and fixedly connected.
In order to improve the protection performance, the box cover is hermetically connected with the box body 103, for example, the box cover is hermetically connected with the box body 103 through a rubber pad, so that the IP54 standard can be met, and the box cover can be used outdoors.
In practical applications, the cover and the case body 103 may be sealed by other structures or components, which is not limited in this embodiment.
In order to facilitate the installation of the flow dividing box, the box body 103 is provided with an installation plate 110, and the installation plate 110 is provided with an installation hole and/or an installation opening. Thus, the manifold can be secured in a desired position by fasteners passing through the mounting holes and/or mounting openings.
The number and distribution of the mounting plates 110 are selected according to actual needs, and the embodiment is not limited thereto.
Based on the shunt box provided in the foregoing embodiment, the present embodiment further provides a photovoltaic power station, which includes the string-type inverter 200 and the shunt box 100 provided in the foregoing embodiment, wherein the shunt box 100 and the string-type inverter 200 are electrically connected.
Because the flow distribution box that above-mentioned embodiment provided has above-mentioned technological effect, above-mentioned photovoltaic power plant includes above-mentioned flow distribution box 100, then above-mentioned photovoltaic power plant also has corresponding technological effect, and this text is no longer repeated.
In the photovoltaic power station, the optional shunt box 100 is located at the bottom side of the string inverter 200, especially when the shunt output terminal 105 is higher than the shunt input terminal 107 and the output via hole is higher than the input via hole.
In the photovoltaic power station, the photovoltaic power station may further include a support 300, and the shunt box 100 and the string inverter 200 are both fixed to the support 300, as shown in fig. 5 and 6; optionally, the photovoltaic power station further comprises an inversion room, the string-type inverter 200 is located in the inversion room, and the shunt box 100 is located outside the inversion room and fixed on a wall of the inversion room; other ways to fix the shunt box 100 and the string inverter 200 may be selected, and this embodiment is not limited thereto.
The structure and type of the bracket 300 are selected according to actual needs, and the embodiment is not limited thereto.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. 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 (15)

1. A flow manifold, comprising: the box body is internally provided with an input copper bar (101) and an output copper bar (102) which are electrically connected; the input copper bar (101) is provided with a shunt input end (107), and the output copper bar (102) is provided with at least two shunt output ends (105).
2. The flow divider box according to claim 1, characterized in that said input copper bar (101) and said output copper bar (102) are arranged vertically.
3. The flow divider box according to claim 2, characterized in that said input copper bar (101) is arranged in a vertical direction and said output copper bar (102) is arranged in a horizontal direction.
4. The flow divider box according to claim 1, characterized in that said input copper bar (101) is located at the end of said output copper bar (102), said output copper bar (102) being located between the two ends of said input copper bar (101).
5. The flow divider box according to claim 4, wherein the input copper bars (101) are two and respectively a first positive copper bar and a first negative copper bar, and the output copper bars (102) are two and respectively a second positive copper bar and a second negative copper bar; the first positive electrode copper bar and the first negative electrode copper bar are located between the second positive electrode copper bar and the second negative electrode copper bar.
6. The flow distribution box according to claim 1,
the shunt output (105) is higher than the shunt input (107);
the box is provided with the input via hole that is used for supplying the input cable to pass through and is used for supplying the output cable to pass through, wherein, the output via hole is higher than the input via hole.
7. The flow divider box according to claim 1, wherein there are at least two flow divider input ends (107) on each of the input copper bars (101), and the flow divider input ends are sequentially distributed along the length direction of the input copper bars (101).
8. The flow splitting box according to claim 1, wherein the flow splitting output ends (105) in each output copper bar (102) are at least two rows, and the flow splitting output ends (105) in each row are distributed along the length direction of the output copper bar (102) in sequence; in any two rows, one row of the shunt output ends (105) and the other row of the shunt output ends (105) are distributed in a staggered mode.
9. The flow distribution box according to claim 1, further comprising a mounting frame (104) disposed inside the box body, wherein the input copper bar (101) and the output copper bar (102) are both fixed to the mounting frame (104) in an insulating manner.
10. The flow divider box according to claim 9, characterized in that the input copper bar (101) is detachably fixed to the mounting frame (104) by a first insulator (109), the output copper bar (102) is detachably fixed to the mounting frame (104) by a second insulator (111), and the input copper bar (101) and the output copper bar (102) are detachably electrically connected.
11. The flow divider box according to claim 9, wherein one end of the output copper bar (102) is fixed to the mounting frame (104) through a second insulator (111), and the other end of the output copper bar (102) is fixedly connected and electrically connected to the input copper bar (101).
12. A diverter box according to any of claims 1-11, characterized in that both the diverter input (107) and the diverter output (105) are through holes.
13. The manifold as recited in claim 12, further comprising: an input connection terminal (108) arranged at the shunt input end (107), and an output connection terminal (106) arranged at the shunt output end (105); wherein the input connection terminal (108) and the output connection terminal (106) are both OT terminals.
14. A photovoltaic power plant comprising a string inverter (200), characterized by further comprising a shunt box (100) according to any of claims 1-13, the shunt box (100) and the string inverter (200) being electrically connected.
15. The pv power plant of claim 14 wherein the shunt box (100) is located on the bottom side of the string inverter (200).
CN202121856845.2U 2021-08-09 2021-08-09 Flow distribution box and photovoltaic power station Active CN215378865U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121856845.2U CN215378865U (en) 2021-08-09 2021-08-09 Flow distribution box and photovoltaic power station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121856845.2U CN215378865U (en) 2021-08-09 2021-08-09 Flow distribution box and photovoltaic power station

Publications (1)

Publication Number Publication Date
CN215378865U true CN215378865U (en) 2021-12-31

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CN202121856845.2U Active CN215378865U (en) 2021-08-09 2021-08-09 Flow distribution box and photovoltaic power station

Country Status (1)

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CN (1) CN215378865U (en)

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