CN216774712U - Junction box and photovoltaic module - Google Patents
Junction box and photovoltaic module Download PDFInfo
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- CN216774712U CN216774712U CN202122946941.2U CN202122946941U CN216774712U CN 216774712 U CN216774712 U CN 216774712U CN 202122946941 U CN202122946941 U CN 202122946941U CN 216774712 U CN216774712 U CN 216774712U
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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
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- 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 junction box and a photovoltaic assembly, which comprise a base, a circuit control module and a box cover, wherein a positive input terminal, a negative input terminal, a positive output terminal and a negative output terminal which are mutually spaced are arranged in the base; the negative input terminal is connected with the negative output terminal in a conduction way; the circuit control module is arranged on an output circuit of the junction box, connected between the positive input terminal and the positive output terminal and used for conducting and adjusting the output circuit; the box cover is at least provided with a first conductive block and a second conductive block which are electrically connected, and the box cover is switched between a connection position and a disconnection position by rotating the box cover; when the circuit control module is in a communication position, the first conductive block and the second conductive block are respectively in one-to-one corresponding contact with the positive input terminal and the positive output terminal and are used for short-circuiting the circuit control module; when the circuit control module is in a disconnection position, the first conductive block and the second conductive block are not in contact with the positive input terminal and the positive output terminal, and the circuit control module is connected into the output circuit.
Description
Technical Field
The utility model relates to the technical field of photovoltaic modules, in particular to a junction box and a photovoltaic module.
Background
In the leading-edge technology of solar energy, an intelligent photovoltaic module is a photovoltaic module integrated with intelligent control, the functions of the existing intelligent photovoltaic module are generally realized on a common module by adding an intelligent junction box with an intelligent chip circuit, and the intelligent junction box comprises various modules, such as a voltage comparison selection switch module, a boost circuit module, a buck circuit module, a circuit breaker module and the like. The controller controls the normal work of each module, but when the controller or the functional module has problems, the junction box can not work normally, so that the cell string of the assembly is disconnected, and the electric energy loss is caused; because the heat-conducting glue is filled in the box body of the intelligent junction box, the junction box can not be disassembled and maintained, and the replacement of the junction box can influence the working efficiency and the normal work of the assembly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a junction box and a photovoltaic assembly, and aims to solve the problem that when a functional module in an intelligent junction box fails, the junction box cannot be replaced immediately, and normal operation of the assembly is influenced.
In order to achieve the above purpose, the utility model provides the following technical scheme:
in a first aspect, the present invention provides a junction box comprising:
the base is provided with a positive input terminal, a negative input terminal, a positive output terminal and a negative output terminal at intervals; the positive input terminal is used for connecting the positive electrode of the battery string, the negative input terminal is used for connecting the negative electrode of the battery string, and the negative input terminal is in conductive connection with the negative output terminal;
the circuit control module is arranged on the output circuit of the junction box, connected between the positive input terminal and the positive output terminal and used for conducting and adjusting the output circuit;
the box cover is matched with the base and is at least provided with a first conductive block and a second conductive block which are electrically connected, the box cover has a connection position and a disconnection position relative to the base, and the box cover is switched between the connection position and the disconnection position by rotating the box cover; when the circuit control module is in a communication position, the first conductive blocks and the second conductive blocks are in one-to-one correspondence and contact with the positive input terminal and the positive output terminal respectively and are used for short-circuiting the circuit control module; when the circuit control module is in a disconnection position, the first conductive block and the second conductive block are not in contact with the positive input terminal and the positive output terminal, and the circuit control module is connected into the output circuit.
Compared with the prior art, the structure of the box cover is improved, the first conductive block and the second conductive block which are electrically connected are arranged on the box cover, when the circuit control module of the junction box works normally, the box cover is in a disconnected position relative to the base, at the moment, the first conductive block and the second conductive block are not in contact with the positive input terminal and the positive output terminal in the base, and the circuit control module is normally connected into an output circuit of the junction box; when the circuit control module in the junction box breaks down, the output circuit of the junction box is disconnected, at the moment, the box cover is rotated, the first conductive block and the second conductive block which are electrically connected are respectively contacted with the positive input terminal and the positive output terminal, so that the positive input terminal and the positive output terminal in the output circuit are directly conductively connected, the circuit control module is in short circuit, the junction box becomes an ordinary junction box at the moment, the photovoltaic module can continuously work normally, the problem that the whole assembly circuit cannot work due to the faults of the junction box is solved, the junction box does not need to be replaced in time, and the working efficiency is improved.
In one implementation, the positive input terminal and the positive output terminal are arranged along a straight line and located on the same side of the base, the first conductive block and the second conductive block are arranged along a straight line and located on the same side of the box cover, and the distance between the first conductive block and the second conductive block is equal to the distance between the positive input terminal and the positive output terminal. So set up for when the relative base of lid rotated the intercommunication position, first conducting block and second conducting block can contact with anodal input terminal and anodal output terminal's position one-to-one.
In one implementation, the lid rotates ± 90 ° or ± 180 ° relative to the base when the first and second conductive blocks are switched between the connected and disconnected positions. The arrangement is that the junction box is always designed to be a rectangular structure, and the box cover can be still clamped and fixed with the base by rotating 90 degrees or 180 degrees.
In one implementation mode, the box cover is further provided with a third conductive block and a fourth conductive block which are disconnected;
the third conductive block and the fourth conductive block are positioned on the other side of the box cover opposite to the first conductive block and the second conductive block;
the negative input terminal and the negative output terminal are positioned on the other side of the base opposite to the positive input terminal and the positive output terminal;
at the communication position, the third conductive block and the fourth conductive block are in one-to-one corresponding contact with the negative input terminal and the negative output terminal respectively;
in the off position, the third conductive block and the fourth conductive block are in one-to-one corresponding contact with the positive output terminal and the positive input terminal respectively, and the first conductive block and the second conductive block are in one-to-one corresponding contact with the negative output terminal and the negative input terminal respectively.
In a second aspect, the present invention provides a junction box comprising:
the base is provided with a positive input terminal, a negative input terminal, a positive output terminal and a negative output terminal which are spaced from each other, the positive input terminal is used for connecting the positive poles of the battery strings, and the negative input terminal is used for connecting the negative poles of the battery strings;
the circuit control module is arranged on the output circuit of the junction box, connected between the positive input terminal and the positive output terminal and used for conducting and adjusting the output circuit;
the box cover is provided with conductive blocks which are in one-to-one correspondence with and abutted against the positive input terminal and the positive output terminal at intervals;
and the conduction connecting piece is arranged outside the box cover and located outside the two conductive blocks, and can be used for electrically connecting the two conductive blocks so as to enable the circuit control module to be in short circuit.
Compared with the prior art, the utility model improves the structure of the box cover, and the conduction connecting piece for connecting the two conductive blocks is arranged on the box cover, so that when the circuit control module of the junction box works normally, the conduction connecting piece is not contacted with the two conductive blocks, at the moment, the positive input terminal and the positive output terminal are in a disconnected state, and the circuit control module is normally connected into an output circuit of the junction box; when a circuit control module in the junction box breaks down, the output circuit is disconnected, at the moment, the conduction connecting piece is in contact with the two conductive blocks, so that the conductive blocks which are electrically connected are in contact with the positive input terminal and the positive output terminal, the positive input terminal and the positive output terminal in the output circuit are directly conducted, the circuit control module is in short circuit, the junction box becomes an ordinary junction box at the moment, the photovoltaic module can continuously work normally, the problem that the whole assembly circuit cannot work due to the faults of the junction box is solved, and the working efficiency is improved.
In one implementation, a continuity connector includes:
the bracket is arranged on the box cover;
the movable rod is movably arranged on the bracket and moves relative to the bracket along the direction close to or far away from the anode input terminal;
the current-conducting plate is fixed at one end of the movable rod and used for conducting the positive input terminal and the positive output terminal in a contact way when the movable rod is close to the positive input terminal and short-circuiting the circuit control module; the current-conducting plate is used for when the movable rod is far away from the positive pole input terminal, and the current-conducting plate non-contact switches on the positive pole input terminal and the positive pole output terminal, and the circuit control module is connected into the output circuit.
In one implementation, the conduction connector further comprises an elastic part, two ends of the elastic part respectively act on the support and the movable rod in an elastic manner, and the elastic part applies an acting force far away from the positive input terminal to the movable rod.
In one implementation, the conduction connector further includes a limiting plate disposed in a movement path of the conductive plate away from the positive input terminal for limiting contact with the conductive plate.
In one implementation, two contacts for contacting and conducting with the positive input terminal and the positive output terminal in a one-to-one correspondence manner are arranged on one side of the conductive plate close to the positive input terminal.
In a third aspect, the utility model provides a photovoltaic module, which includes a battery string and a junction box, where the junction box is the junction box described in the first aspect or the second aspect.
The technical effect achieved by the photovoltaic module is the same as that of the junction box described in the first aspect and the second aspect, and is not described again here.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
FIG. 1 is a circuit diagram in a junction box;
FIG. 2 is a schematic diagram illustrating the distribution of terminals on the base of the junction box according to the present invention;
fig. 3 is a schematic distribution diagram of conductive blocks in a box cover of a junction box according to the present invention;
FIG. 4 is a schematic view of the distribution of terminals on the base of another junction box according to the present invention;
FIG. 5 is a schematic view showing the distribution of conductive blocks in the cover of another junction box according to the present invention;
FIG. 6 is a schematic view of the lid of FIG. 5 after rotation;
FIG. 7 is a schematic view showing the distribution of conductive blocks in the cover of another junction box according to the present invention;
fig. 8 is a schematic structural diagram of a conductive connection component of a junction box according to the present invention.
In the figure:
1-a base; 2-a circuit control module; 3-a box cover; 11-positive input terminal; 12-negative input terminal; 13-positive output terminal; 14-negative output terminal; 31 — a first conductive block; 32-a second conductive block; 33-a third conductive block; 34-a fourth conductive block; 4-a scaffold; 5-a movable rod; 6-a conductive plate; 7-an elastic member; 8-limiting plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment of the utility model discloses a junction box, which comprises a base 1, a circuit control module 2 and a box cover 3, wherein the base 1 is provided with a positive input terminal 11 (shown as IN + IN fig. 1), a negative input terminal 12 (shown as IN-IN fig. 1), a positive output terminal 13 (shown as OUT + IN fig. 1) and a negative output terminal 14 (shown as OUT-IN fig. 1) which are arranged at intervals; the positive input terminal 11 is used for connecting the positive poles of the battery strings, the negative input terminal 12 is used for connecting the negative poles of the battery strings, and the negative input terminal 12 is in conductive connection with the negative output terminal 14;
the circuit control module 2 is arranged on an output circuit of the junction box, is connected between the positive input terminal 11 and the positive output terminal 13, and is used for conducting and adjusting the output circuit; the output circuit of the junction box is a section of circuit from the positive electrode of the battery string to the PV + output end;
the box cover 3 is matched with the base 1 for installation, at least a first conductive block 31 and a second conductive block 32 which are electrically connected are arranged in the box cover 3, the box cover 3 has a connection position and a disconnection position relative to the base 1, and the box cover 3 is switched between the connection position and the disconnection position relative to the base 1 by rotating the box cover 3; when the circuit control module 2 is in the connection position, the first conductive block 31 and the second conductive block 32 are in one-to-one correspondence and contact with the positive input terminal 11 and the positive output terminal 13 respectively, and are used for short-circuiting the circuit control module 2; in the open position, neither the first conductive piece 31 nor the second conductive piece 32 is in contact with the positive input terminal 11 and the positive output terminal 13, and the circuit control module 2 is connected to the output circuit.
The principle is explained with reference to the current trend of fig. 1, when in use, the box cover 3 is connected with the base 1 in a buckling manner, and when in a disconnection position, two conductive blocks electrically connected on the box cover 3 are dislocated with the positive input terminal 11 and the positive output terminal 13 in the base 1 and do not contact with each other, at the moment, the positive input terminal 11 and the positive output terminal 13 are kept in a disconnection state, and the circuit control module 2 is normally connected into an output circuit of the junction box; the circuit control module 2 has the functions of switching on and off, boosting and reducing voltage and the like for the output circuit, when the circuit control module 2 breaks down to cause the output circuit to be disconnected, the box cover 3 is opened to rotate, the first conductive block 31 and the second conductive block 32 which are electrically connected with the box cover 3 are respectively in one-to-one contact with the positive input terminal 11 and the positive output terminal 13, the positive input terminal 11 and the positive output terminal 13 are directly conducted, the circuit control module 2 is in short circuit to form a common junction box, the function of the conventional junction box can only be realized, the problem that the whole assembly circuit cannot work due to the fault of the junction box is temporarily solved, the photovoltaic power generation loss is reduced, the replacement and maintenance are not needed, and the working efficiency is improved.
According to the technical scheme and the implementation process, the box cover 3 is provided with the first conductive block 31 and the second conductive block 32 which are electrically connected, when the intelligent control function of the junction box normally works, the box cover 3 is located at the disconnection position relative to the base 1, at the moment, the first conductive block 31 and the second conductive block 32 are not in contact with the positive input terminal 11 and the positive output terminal 13 in the base 1, and the circuit control module 2 is normally connected into an output circuit of the junction box; when the circuit control module 2 in the junction box breaks down, the output circuit of the junction box is disconnected, at the moment, the box cover 3 is rotated, the first conductive block 31 and the second conductive block 32 which are electrically connected are in contact with the positive input terminal 11 and the positive output terminal 13, the positive input terminal 11 and the positive output terminal 13 in the output circuit are directly in conductive connection, the circuit control module 2 is in short circuit, the junction box becomes an ordinary junction box at the moment, the photovoltaic module can continuously work normally, the problem that the junction box cannot work to disconnect the output circuit due to the fault of the circuit control module is solved, the problem that the whole assembly circuit cannot work due to the fault of the junction box is solved, the junction box does not need to be replaced in time, and the working efficiency is improved.
As shown in fig. 2 to 6, optionally, in this embodiment, the positive input terminal 11 and the positive output terminal 13 are arranged along a straight line and located on the same side in the base 1, the first conductive block 31 and the second conductive block 32 are arranged along a straight line and located on the same side of the box cover 3, and a distance between the first conductive block 31 and the second conductive block 32 is equal to a distance between the positive input terminal 11 and the positive output terminal 13. The arrangement is such that when the box cover 3 rotates to the communication position relative to the base 1, the first conductive block 31 and the second conductive block 32 can be in one-to-one corresponding contact with the positions of the positive input terminal 11 and the positive output terminal 13.
Specifically, when the first conductive block 31 and the second conductive block 32 are switched between the connection position and the disconnection position, the box cover 3 rotates by ± 90 ° or ± 180 ° relative to the base 1, and the arrangement is that the box cover is normally designed to be a rectangular structure, so that the short circuit of the circuit control module 2 is realized by rotating by 90 ° or 180 ° under the condition that the box cover 3 is still connected with the base 1 in a clamped manner.
As shown in fig. 2-3, in an embodiment, the end surfaces of the base 1 and the box cover 3 are square, one side of the box cover 3 is provided with a first conductive block 31 and a second conductive block 32 which are electrically connected, the positive input terminal 11 and the positive output terminal 13 on the base 1 are located on the same side of the base 1 along a straight line, and when the circuit control module 2 of the wire box normally works, the straight line where the first conductive block 31 and the second conductive block 32 which are electrically connected is perpendicular to the straight line where the positive input terminal 11 and the positive output terminal 13 are located; when the circuit control module 2 breaks down, when the function control of the output circuit cannot be achieved, the box cover 3 is opened and is buckled with the base 1 after being rotated clockwise or anticlockwise for 90 degrees, the first conductive block 31 and the second conductive block 32 which are electrically connected are in one-to-one corresponding contact with the positive input terminal 11 and the positive output terminal 13 respectively, the circuit control module 2 is in short circuit, the function of a conventional junction box is achieved, and the problem that the whole assembly circuit cannot work due to the fault of the junction box is temporarily solved.
As shown in fig. 4-6, in an embodiment, the end surfaces of the base 1 and the box cover 3 are rectangular, the positive input terminal 11 and the positive output terminal 13 on the base 1 are located on the same side or the same end of the base 1 along a straight line, and during normal operation, the other side or the other end of the box cover 3 opposite to the positive input terminal 11 and the positive output terminal 13 is provided with a first conductive block 31 and a second conductive block 32 which are electrically connected, and the straight line where the first conductive block 31 and the second conductive block 32 which are electrically connected are parallel to the straight line where the positive input terminal 11 and the positive output terminal 13 are located; when circuit control module 2 broke down, when can not playing the function control to output circuit, open lid 3 through with its clockwise or anticlockwise rotation 180 back, again with base 1 lock, the first conducting block of electricity connection and second conducting block contact with anodal input terminal 11 and anodal output terminal 13 one-to-one respectively this moment, with circuit control module 2 short circuit, realize the function of conventional terminal box, temporarily alleviate because of the terminal box trouble leads to the unable problem of work of whole subassembly circuit.
As shown in fig. 7, in the present embodiment, the box cover 3 is further provided with a third conductive block 33 and a fourth conductive block 34 which are disconnected; the third conductive block 33 and the fourth conductive block 34 are located on the other side of the box cover 3 opposite to the first conductive block 31 and the second conductive block 32; the negative input terminal 12 and the negative output terminal 14 are located on the other side of the base 1 opposite to the positive input terminal 11 and the positive output terminal 13; in the communicating position, the third conductive block 33 and the fourth conductive block 34 are in one-to-one corresponding contact with the negative input terminal 12 and the negative output terminal 14, respectively; in the open position, the third and fourth conductive pieces 33 and 34 are in one-to-one contact with the positive output terminal 13 and the positive input terminal 11, respectively, and the first and second conductive pieces 31 and 32 are in one-to-one contact with the negative output terminal 14 and the negative input terminal 12, respectively. When circuit control module 2 broke down, when can not playing the function control to output circuit, opened lid 3 through with its clockwise or anticlockwise rotation 180 back, again with base 1 lock, with the short circuit of circuit control module 2, realized the function of conventional terminal box, temporarily alleviated because of the terminal box trouble leads to the unable problem of work of whole subassembly circuit.
It should be noted that the shape of the junction box of the present invention is not limited to the rectangular structure given in the present embodiment, and all structures capable of implementing the intelligent junction box are within the protection scope of the present invention, taking a circular junction box as an example, the positive input terminal 11 and the positive output terminal 13 in the base may be arranged by using an arc-shaped track, and the first conductive block 31 and the second conductive block 32 on the box cover 3 opposite to the positive input terminal and the positive output terminal are also arranged by using an arc-shaped track, in this case, any rotation angle may be set to implement the short circuit to the circuit control module 2.
As shown in fig. 8, another junction box is provided in the embodiment of the present invention, which includes a base 1, a circuit control module 2, a box cover 3 and a conductive connector; the base 1 is provided with a positive input terminal 11, a negative input terminal 12, a positive output terminal 13 and a negative output terminal 14 at intervals, wherein the positive input terminal 11 is used for connecting the positive poles of the battery strings, and the negative input terminal 12 is used for connecting the negative poles of the battery strings; the circuit control module 2 is arranged on an output circuit of the junction box, is connected between the positive input terminal 11 and the positive output terminal 13, and is used for conducting and adjusting the output circuit; the box cover 3 is provided with conductive blocks which are in one-to-one correspondence with the positive input terminal 11 and the positive output terminal 13 and are abutted with the positive input terminal and the positive output terminal at intervals; set up in lid 3 and be located outside two conducting blocks, the conducting connection piece can be connected two conducting blocks electricity for circuit control module short circuit.
During the use, lid 3 is connected with base 1 lock, two conducting blocks that the interval set up on lid 3 and the anodal input terminal 11 in the base 1, anodal output terminal 13 one-to-one contact, when the circuit control module 2 of terminal box normally works, the conduction connecting piece does not contact with two conducting blocks, anodal input terminal 11 and anodal output terminal 13 are in the off-state, circuit control module 2 normally inserts in the output circuit of terminal box, when circuit control module 2 sends the trouble and leads to the output circuit disconnection, electrically connect two conducting blocks through the conduction connecting piece, thereby make anodal input terminal 11, anodal output terminal 13 switch on, short circuit control module 2, realize the function of conventional terminal box, alleviate the problem that leads to the unable work of whole subassembly circuit because of the terminal box trouble temporarily, the loss has been reduced.
According to the technical scheme and the implementation process, the box cover 3 is provided with the conduction connecting piece for connecting the two conductive blocks, when the circuit control module 2 of the junction box works normally, the conduction connecting piece is not contacted with the two conductive blocks, at the moment, the positive input terminal 11 and the positive output terminal 13 are in a disconnected state, and the circuit control module 2 is normally connected into an output circuit of the junction box; when circuit control module 2 in the terminal box breaks down, lead to output circuit disconnection, at this moment, switch on connecting piece and two conducting blocks contact, thereby make two conducting blocks of electricity connection and anodal input terminal 11, anodal output terminal 13 contact, with anodal input terminal 11 and the anodal output terminal 13 direct conduction in the output circuit, with circuit control module 2 short circuit, the terminal box becomes ordinary terminal box this moment, can make photovoltaic module continue to maintain normal work, solve because of the terminal box trouble leads to the unable problem of work of whole subassembly circuit, improve work efficiency.
As shown in fig. 7, in a specific embodiment, the conductive connector includes a bracket 4, a movable rod 5, and a conductive plate 6; wherein, the bracket 4 is arranged on the box cover 3; the movable rod 5 is movably arranged on the bracket 4 and moves relative to the bracket 4 along the direction close to or far away from the positive input terminal 11; the conductive plate 6 is fixed at one end of the movable rod 5, and when the movable rod 5 is close to the positive input terminal 11, the conductive plate 6 is used for conducting the positive input terminal 11 and the positive output terminal 13 in a contact way, so that the circuit control module 2 is in short circuit; the conductive plate 6 is used for conducting the positive input terminal 11 and the positive output terminal 13 without contact of the conductive plate 6 when the movable rod 5 is far away from the positive input terminal 11, and the circuit control module 2 is connected into an output circuit.
When the photovoltaic module is used, the support 4 is arranged on the box cover 3, the movable rod 5 can reciprocate in the support 4, when the conductive plate 6 at one end of the movable rod 5 is not in contact with the end face of the box cover 3, namely is not in contact with the positive input terminal 11 and the positive output terminal 13 for conduction, when the circuit control module 2 in the base 1 breaks down to cause the disconnection of an output circuit, the conductive plate 6 is simultaneously in contact with the positive input terminal 11 and the positive output terminal 13 for conduction through moving the movable rod 5, the circuit control module 2 is in short circuit, the positive input terminal 11 and the positive output terminal 13 are communicated, the conventional junction box is formed, the normal output of the electric energy of the photovoltaic module is maintained, and the energy consumption loss is reduced.
Preferably, in the present embodiment, the conduction connector further includes an elastic member 7, two ends of the elastic member 7 respectively elastically act on the bracket 4 and the movable rod 5, and the elastic member 7 applies a force to the movable rod 5 away from the positive input terminal 11. So set up, elastic component 7 generally chooses the spring for use, and under elastic force effect of elastic component 7, movable rod 5 takes conductive plate 6 to keep away from anodal input terminal 11, remains the state of disconnection throughout, and when exerting external force on movable rod 5, elastic component 7 compresses, and conductive plate 6 is close to anodal input terminal 11, until being connected with anodal input terminal 11 and anodal output terminal 13, with the short circuit of circuit control module 2.
Further, in the present embodiment, the conductive plate 6 is provided with two contacts for contacting and conducting with the positive input terminal 11 and the positive output terminal 13 in a one-to-one correspondence manner on a side close to the positive input terminal 11. So set up, ensure that the current conducting plate 6 connects anodal input terminal 11 and anodal output terminal 13 simultaneously and switch on, prevent that current conducting plate 6 surface is uneven, can not contact with anodal input terminal 11 and anodal output terminal 13 simultaneously, short circuit control module 2.
Advantageously, the conduction connector further comprises a limiting plate 8 disposed in a movement path of the conductive plate 6 away from the positive input terminal 11 for limiting contact with the conductive plate 6. So set up, can restrict the home range of movable rod 5, effectual realization is to circuit control module 2's short circuit to prevent that movable rod 5 from breaking away from support 4.
It should be noted that the conducting connector of the present invention is not limited to the structure of the present embodiment that adopts the push switch, and any structure that can conduct the two conductive blocks on the box cover when the circuit control module fails is within the protection scope of the present invention.
Based on the junction box described in any of the above embodiments, an embodiment of the present invention further provides a photovoltaic module, including: the junction box is the junction box described in any of the above embodiments, the positive electrode of the battery string is connected to the positive input terminal 11 of the junction box through the positive bus bar, the negative electrode of the battery string is connected to the negative input terminal 12 of the junction box through the negative bus bar, and the positive output terminal 13 and the negative output terminal 14 are respectively provided with a positive connecting wire and a negative connecting wire for external connection of a load or connection of other photovoltaic modules.
By adopting the photovoltaic component, when the circuit control module 2 in the junction box breaks down, the intelligent control function can be lost, and the output circuit of the junction box is disconnected, at the moment, two conductive blocks electrically connected with the box cover 3 are correspondingly contacted with the positive input terminal 11 and the positive output terminal 13 in the base 1 one by rotating the box cover 3 of the junction box, so that the positive input terminal 11 and the positive output terminal 13 in the output circuit are directly connected in a conductive manner, the circuit control module 2 in the junction box is short-circuited, and the junction box becomes a common junction box, can ensure that the photovoltaic assembly continuously maintains normal work, solves the problem that the junction box can not work to disconnect the output circuit due to the failure of the circuit control module, and because of the problem that the whole assembly circuit can not work due to the fault of the wire box, the wire box does not need to be replaced in time, the electric energy loss is reduced, and the working efficiency is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A junction box, comprising:
a base having a positive input terminal, a negative input terminal, a positive output terminal, and a negative output terminal disposed therein at intervals; the positive input terminal is used for connecting the positive electrode of the battery string, the negative input terminal is used for connecting the negative electrode of the battery string, and the negative input terminal is in conductive connection with the negative output terminal;
the circuit control module is arranged on the output circuit of the junction box, connected between the positive input terminal and the positive output terminal and used for conducting and adjusting the output circuit;
the box cover is matched with the base and is provided with at least a first conductive block and a second conductive block which are electrically connected, the box cover has a connection position and a disconnection position relative to the base, and the box cover is switched between the connection position and the disconnection position by rotating the box cover; when the circuit control module is in the communication position, the first conductive block and the second conductive block are respectively in one-to-one corresponding contact with the positive input terminal and the positive output terminal and are used for short-circuiting the circuit control module; when the circuit control module is in the off position, the first conductive block and the second conductive block are not in contact with the positive input terminal and the positive output terminal, and the circuit control module is connected into the output circuit.
2. The junction box of claim 1, wherein the positive input terminal and the positive output terminal are arranged in a straight line and located on a same side of the base, the first conductive block and the second conductive block are arranged in a straight line and located on a same side of the box cover, and a distance between the first conductive block and the second conductive block is equal to a distance between the positive input terminal and the positive output terminal.
3. The junction box of claim 1, wherein the lid rotates ± 90 ° or ± 180 ° relative to the base when the first and second conductive blocks are switched between the connected and disconnected positions.
4. The junction box of claim 2, wherein a third conductive block and a fourth conductive block which are disconnected are further provided on the box cover;
the third conductive block and the fourth conductive block are positioned on the other side of the box cover opposite to the first conductive block and the second conductive block;
the negative input terminal and the negative output terminal are positioned on the other side of the base opposite to the positive input terminal and the positive output terminal;
at the communication position, the third conductive block and the fourth conductive block are in one-to-one corresponding contact with the negative input terminal and the negative output terminal respectively;
in the off position, the third conductive block and the fourth conductive block are in one-to-one corresponding contact with the positive output terminal and the positive input terminal, respectively, and the first conductive block and the second conductive block are in one-to-one corresponding contact with the negative output terminal and the negative input terminal, respectively.
5. A junction box, comprising:
the battery pack comprises a base, wherein a positive input terminal, a negative input terminal, a positive output terminal and a negative output terminal are arranged in the base at intervals, the positive input terminal is used for connecting the positive poles of a battery string, and the negative input terminal is used for connecting the negative poles of the battery string;
the circuit control module is arranged on the output circuit of the junction box, connected between the positive input terminal and the positive output terminal and used for conducting and adjusting the output circuit;
the box cover is provided with conductive blocks which are correspondingly abutted with the positive input terminal and the positive output terminal one by one at intervals;
and the conduction connecting piece is arranged outside the box cover and positioned two conductive blocks, and the conduction connecting piece can electrically connect the two conductive blocks to ensure that the circuit control module is in short circuit.
6. The junction box of claim 5, wherein the pass-through connector comprises:
a bracket disposed on the cassette cover;
the movable rod is movably arranged on the bracket and moves relative to the bracket along the direction close to or far away from the positive input terminal;
the current-conducting plate is fixed at one end of the movable rod and is used for conducting the positive input terminal and the negative input terminal in a contact way when the movable rod is close to the positive input terminal, so as to short-circuit the circuit control module; the current-conducting plate is used for conducting the positive input terminal and the negative input terminal in a non-contact manner when the movable rod is far away from the positive input terminal, and the circuit control module is connected into the output circuit.
7. The junction box of claim 6, wherein the conductive connector further comprises an elastic member, two ends of the elastic member elastically act on the bracket and the movable rod respectively, and the elastic member exerts a force on the movable rod away from the positive input terminal.
8. The junction box of claim 7, wherein the conductive connector further comprises a limiting plate disposed in a movement path of the conductive plate away from the positive input terminal for limiting contact with the conductive plate.
9. The junction box according to claim 6, wherein one side of the conductive plate close to the positive input terminal is provided with two contacts for one-to-one contact conduction with the positive input terminal and the positive output terminal.
10. A photovoltaic module comprising a string of cells and a junction box, wherein the junction box is according to any one of claims 1 to 4 or 5 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122946941.2U CN216774712U (en) | 2021-11-26 | 2021-11-26 | Junction box and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122946941.2U CN216774712U (en) | 2021-11-26 | 2021-11-26 | Junction box and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216774712U true CN216774712U (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122946941.2U Active CN216774712U (en) | 2021-11-26 | 2021-11-26 | Junction box and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216774712U (en) |
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2021
- 2021-11-26 CN CN202122946941.2U patent/CN216774712U/en active Active
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