Patent Application
20250030210
This application claims the priorities to Chinese patent application No. 202321898712.0, titled “WIRING STRUCTURE AND PHOTOVOLTAIC SYSTEM”, filed with the China National Intellectual Property Administration Jul. 18, 2023, the entire disclosure of which is hereby incorporated by reference.
The present application relates to the technical field of photovoltaic systems, and in particular to a wiring structure and a photovoltaic system.
Generally, a photovoltaic system is provided with multiple electronic devices including an inverter. The multiple electronic devices are electrically connected. Therefore, the multiple electronic devices including the inverter are generally equipped with input terminals and output terminals. The input terminals are usually electrically connected to a junction box at a back side of a photovoltaic module, and the output terminals can be used for electrical connection of multiple electronic devices in series, or for electrical connection with a combiner box or with a power grid. The output terminals include a negative output terminal and a positive output terminal.
The positive electrode and negative electrode of the output terminal of the existing inverter are both mounted on a box by correspondingly opening on the box. The positive output terminal and the negative output terminal of a micro invert product are electrically connected by routing inside the box. If wires are routed inside the box, it may damage the components on the circuit board since the diameter of the wire is generally large and the wire is hard. It is necessary to provide corresponding support structures for supporting the wires and ensuring a safe distance from the corresponding components on the circuit board. The diameter of wire itself, the support structure and the safety distance may occupy a layout space of the circuit board inside the box, which increases the size and cost of electronic devices. In addition, wires routing inside the device may also have an impact on the EMC (electromagnetic compatibility) of the electronic devices.
A wiring structure is provided for facilitating the electronical connections between electronic devices, reducing the size and the cost of the electronic devices, and improving the EMC (electromagnetic compatibility) of the electronic devices.
The wiring structure provided according to the present application is used to electrically connect two electronic devices or to electrically connect one electronic device to an external circuit, each electronic device includes a housing and an electronic component located inside the housing, and the wiring structure comprises:
In one embodiment, the electrical connection module is a first wire, one end of the first wire is electrically connected to the quick-connecting terminal and the other end of the first wire is electrically connected to the external circuit.
In another embodiment, the electrical connection module comprises a positive output terminal and a negative output terminal, which are configured to electrically connect another electronic device or the external circuit.
In another embodiment, one of the positive output terminal and the negative output terminal is a male plug, and another of the positive output terminal and the negative output terminal is a female plug.
In another embodiment, at least two of the quick-connecting terminal, the positive output terminal, and the negative output terminal are electrically connected through a second wire.
In another embodiment, the wiring structure further comprises a third terminal, which includes a first adapter terminal and a second adapter terminal that are electrically connected with each other, the first adapter terminal is connected to the electrical connection module, and the second adapter terminal is connected to a second terminal of another wiring structure or to the external circuit.
In another embodiment, the first adapter terminal and the second adapter terminal are electrical connected with each other through a third wire.
In another embodiment, one of the first adapter terminal and the second adapter terminal is a male plug, and the other of the first adapter terminal and the second adapter terminal is a female plug, so as to adapt with the positive output terminal or the negative output terminal.
In another embodiment, one of the quick-connecting terminal and the first terminal is a male plug, and the other of the quick-connecting terminal and the first terminal is a female plug, and the quick-connecting terminal is fixed to the first terminal by plugging.
A photovoltaic system is further provided in the present application, which includes multiple electronic devices and the wiring structure as described above, and the wiring structure is electrically connected between two electronic devices or connected between one electronic device and an external circuit.
In one embodiment, the multiple electronic devices are connected in series.
In another embodiment, each electronic device includes a housing and electronic components located inside the housing, the housing includes a first housing portion and a second housing portion that are matched, the first housing portion is provided with a mounting notch, and the first housing portion and the second housing portion enclose to form a mounting hole, one end of the first terminal close to the electronic device is provided with a mounting portion, one of an inner periphery of the mounting hole and an outer periphery of the mounting portion is formed with a slot, the other of the inner periphery of the mounting hole and the outer periphery of the mounting portion is formed with an inserting portion, and the inserting portion can be inserted into the slot.
In the present application, the first terminal is provided on the housing and electrically connected to the electronic component, so that the first terminal is directly connected to the internal circuit. In addition, the first terminal is fixedly arranged, so that the internal circuit cannot move and thus the internal circuit board may not be damaged. Besides, the wire diameter of the internal circuit is small and the wire is short, which is beneficial to achieving miniaturization of device. The wiring structure further includes the second terminal, which includes the quick-connecting terminal, the positive output terminal, and the negative output terminal that are electrically connected to each other. The quick-connecting terminal is connected to the first terminal. When the two electronic devices are required to be electrically connected, the quick-connecting terminal is connected to the first terminal, so that the electronic device is electrically connected with the electrical connection module, and then the electrical connection module is connected to another electronic device. When the electronic device is required to be electrically connected to the external circuit, the electrical connection module can be directly connected to the external circuit, thereby completing the electrical connection of electronic devices. A part of the wire is externally arranged, and thus it not only facilitates miniaturization of electronic device, but also reduces impact of the internal routing of the wire on the EMC (electromagnetic compatibility) of electronic devices.
In order to describe the embodiments of the present application or the technical solutions in the prior art more clearly, a brief introduction will be given below to the accompanying drawings required for description of the embodiments or prior art. Obviously, the accompanying drawings in the following description are merely some embodiments of the present application. For those skilled in the art, other figures can be also obtained according to the structure shown in these figures without creative work.
The implementation, functions and advantages of the present application will be further explained in conjunction with embodiments and accompany drawings.
The technical solutions in the embodiments of the present utility mode will be described clearly and completely as follows in conjunction with the accompanying drawings in the embodiments of the present utility mode. It is apparent that the described embodiments are only a part of the embodiments according to the present utility mode, rather than all of the embodiments. All the other embodiments obtained by those skilled in the art based on the embodiments of the present utility mode without creative work will fall within the scope of protection of the present utility mode.
It should be understood that the orientation indications such as “up”, “down”, “left”, “right”, “front”, and “back” are only used to explain the relative position relationship, the motion situation and so on under a specific posture, for example, shown in Figures. If the specific posture changes, those directional indications will change accordingly.
In addition, in the present application, the terms “first”, “second” and the like are only for purpose of description, and should not be interpreted as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features defined by “first” and “second” may explicitly or implicitly include one or more of the features. In addition, in the context of the present application, the “and/or” means that there can be three kinds of relationships, for example, A and/or B means that there are three cases: A alone, A and B at the same time, and B alone. In addition, the technical solutions among various embodiments can be combined with each other, provided that they must be based on what those skilled in the art in this field can achieve. When the combination of technical solutions conflicts or cannot be achieved, it should be considered that such combination of technical solutions does not exist and is not within the claimed protection scope of the present application.
A wiring structure 100 according to the present application is used for electrically connecting two electronic devices 200, or electrically connecting one electronic device 200 and an external circuit. The electronic device 200 includes a housing 210 and an electronic component located inside the housing 210.
In an embodiment of the present application, as shown in
Specifically, in a photovoltaic system, multiple electronic devices 200, such as an inverter, are electrically connected. Therefore, the electronic devices 200, such as an inverter, generally are equipped with input and output terminals. The input terminals are usually electrically connected to a junction box at a back side of the photovoltaic module. The output terminals may be used for electrical connecting multiple electronic devices 200 in series and may also be used for electrical connecting an external circuit, such as a combiner box or a power grid. Each output terminal includes a positive output terminal 122 and/or a negative output terminal 123. The positive output terminal 122 and/or the negative output terminal 123 of the existing inverter are both electrically connected to the electronic component inside the housing 210 through wires, and a mounting hole 213 is correspondingly provided in the housing 210. The positive output terminal 122 and/or the negative output terminal 123 pass through the mounting hole 213, and the wires can be extended or retracted according to the actual length of the connection. The remaining part of the wires is received inside the housing 210, that is, the wires need to be routed inside the housing 210. The diameters of wires are generally large and the wires are hard, which can damage the components on a circuit board, and thus it is necessary to provide a corresponding support structure for supporting the wires and ensuring a safe distance from the corresponding components on the circuit board. Due to the fact that the inverter used in photovoltaic systems is usually a micro inverter, the diameters of wires themselves, the support structure, and the safety distance may occupy the layout space of the circuit board inside the box, which greatly increases the size and the manufacturing cost of the inverter. Moreover, routing inside the equipment may also have an impact on the EMC (electromagnetic compatibility) of electronic devices 200.
In this embodiment, the first terminal 110 is provided on the housing 210 and electrically connected to the electronic component, so that the first terminal 110 is directly connected to the internal circuit. In addition, the first terminal 110 is fixedly arranged, so that the internal circuit cannot move and thus the internal circuit board may not be damaged. Besides, the wire diameter of the internal circuit is small and the wire is short, which is beneficial to achieving miniaturization of device. The wiring structure 100 further comprises a second terminal 120, which includes a quick-connecting terminal 121 and an electrical connection module 125 that are electrically connected with each other. The quick-connecting terminal 121 is connected to the first terminal 110. When two electronic devices 200 are required to be electrically connected, the quick-connecting terminal 121 is connected to the first terminal 110, so that one electronic device 200 is electrically connected with the electrical connection module 125, and then the electrical connection module 125 is connected to the other electronic device 200. When the electronic device 200 is electrically connected to the external circuit, the electrical connection module 125 can be directly connected to the external circuit, thereby completing the electrical connection of electronic devices 200. A part of the wire is externally arranged, and thus it not only facilitates miniaturization of electronic device 200, but also reduces impact of the internal routing of the wire on the EMC (electromagnetic compatibility) of electronic device 200.
Referring to
Referring to
In an embodiment, referring to
In another embodiment, one of the positive output terminal 122 and the negative output terminal 123 is a male plug, and the other of the positive output terminal 122 and the negative output terminal 123 is a female plug. Specifically, on one hand, the adaptability between the second terminal 120 and the external circuit is improved, so that the second terminal 120 always has an adaptive wiring terminal regardless that the external circuit is equipped with a male plug or a female plug, and on the other hand, the adaptability between the two second terminals 120 that are in the electrical connection is improved, and the electrical connection between these two second terminals 120 can be achieved without an adapter. Herein, one of the positive output terminal 122 and the negative output terminal 123 can be a male plug and the other of the positive output terminal 122 and the negative output terminal 123 can be a female plug. That is, the positive output terminal 122 can be a male plug and the negative output terminal 123 can be a female plug, alternatively, the positive output terminal 123 can be a male plug and the negative output terminal 122 can be a female plug.
In the present application, the first terminal 110 is located on the housing 210 and is electrically connected to the electronic component, so that the first terminal 110 is directly connected to the internal circuit, and the first terminal 110 is fixedly arranged. Therefore, the internal circuit cannot move and thus the internal circuit board may not be damaged. In addition, the diameter of the wire of the internal circuit is small and the wire is short, which is beneficial to achieving equipment miniaturization. The wiring structure 100 further includes the second terminal 120. The second terminal 120 includes the quick-connecting terminal 121, the positive output terminal 122, and the negative output terminal 123 that are electrically connected with each other. The quick-connecting terminal 121 is connected to the first terminal 110. When requiring for electrically connecting two electronic devices 200, the quick-connecting terminal 121 is connected to the first terminal 110, so that one electronic device 200 is electronically connected to the electrical connection module 125, and then the electrical connection module 125 is connected to another electronic device 200. When the electronic device 200 is required to be connected to the external circuit, the electrical connection module 125 can be directly connected to the external circuit, thereby completing the electrical connection of electronic devices 200. A part of the wire is externally arranged, and thus it not only facilitates miniaturization of electronic device 200, but also reduces impact of the internal routing of the wire may apply on the EMC (electromagnetic compatibility) of electronic devices 200.
Referring to
In case that the second wire 124 is not provided among the quick-connecting terminal 121, the positive output terminal 122, and the negative output terminal 123, in an embodiment, referring to
Furthermore, the first adapter terminal 131 and the second adapter terminal 132 are electrically connected through the third wire 133. The length of the third wire 133 can be various, which further facilitates the users to connect two electronic devices 200 according to actual mounting conditions. Therefore, it further reduces the situation where the circuit cannot be connected properly due to the too short length of the third wire 133.
In an embodiment, one of the first adapter terminal 131 and the second adapter terminal 132 is a male plug and the other of the first adapter terminal 131 and the second adapter terminal 132 is a female plug, so as to be adapted to the positive output terminal 122 or negative output terminal 123. Specifically, in order to improve the compatibility between the third terminal 130 and the second terminal 120, no matter that the positive output terminal 122 or negative output terminal 123 is a male or female plug, the third terminal 130 has a first adapter terminal 131 and a second adapter terminal 132 that are compatible with them, and thus the electrical connection between the third terminal 130 and the second terminal 120 can be achieved without an adapter. Specifically, one of the first adapter terminal 131 and the second adapter terminal 132 is a male plug, and the other of the first adapter terminal 131 and the second adapter terminal 132 is a female plug, that is, the first adapter terminal 131 can be a male plug and the second adapter terminal 132 can be a female plug, alternatively, the second adapter terminal 132 can be a male plug and the first adapter terminal 131 can be a female plug.
The present application further provides a photovoltaic system, which includes multiple electronic devices 200 and the wiring structure 100. The specific structure of the wiring structure 100 can make reference to the above embodiments. As the photovoltaic system adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and is not repeated here. Specifically, the wiring structure 100 is connected between two electronic devices 200, or between the electronic device 200 and the external circuit.
Furthermore, referring to
In an embodiment, the electronic device 200 includes the housing 210 and electronic components located inside the housing 210. The housing 210 includes the first housing portion 211 and the second housing portion 212 that are mutually covered. The first housing portion 211 is provided with the mounting notch, and the first housing portion 211 and the second housing portion 212 enclose to form the mounting hole 213. One end of the first terminal 110 close to the electronic device 200 has a mounting portion 111. One of an inner periphery of the mounting hole 213 and an outer periphery of the mounting portion 111 is formed with a slot 112 and the other of the inner periphery of the mounting hole 213 and the outer periphery of the mounting portion 111 is formed with an insertion part 214, which can be inserted into the slot 112. Specifically, the first terminal 110 is fixed to the housing 210 by insertion, which, on one hand, facilitates mounting the first terminal 110 with the housing 210 and facilitates maintenance and the replacement for the first terminal 110, and, on the other hand, reduces the possibility of water or dust accidentally entering the interior of the housing 210 through the mounting hole 213.
The description above is only preferable embodiments of the present application which are not intend to limit the scope of the present application. Any equivalent structural variations made under the invention concept of this present application and with the description and drawings thereof, or directly/indirectly application in other related technical fields are all fallen into the protection scope of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202321898712.0 | Jul 2023 | CN | national |
