PV terminal units and electrical equipment

Abstract

The present invention discloses a PV terminal unit and an electric device, the PV terminal unit includes a mounting frame and at least one PV terminal, the mounting frame has mounting positions for fixing the PV terminal, and the mounting positions are at least two. In the PV terminal unit disclosed in the present invention, the mounting frame has mounting positions for fixing the PV terminal, and the mounting positions are at least two, so that at least two PV terminals can be integrated into the mounting frame, and the number of PV terminals in the entire PV terminal unit can be adjusted by adjusting the number of PV terminals on the mounting frame, thereby improving the expandability and compatibility, making the entire electric device compatible with various input configurations, improving development efficiency, and reducing the space occupied by all the PV terminals, which further reduces the volume of the entire electric device, and also simplifies the installation of the PV terminals, improving the installation efficiency.

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application filed with the China National Intellectual Property Administration on October 18, 2021, with the application number 202122507851.3 and the invention title "PV Terminal Unit and Electrical Equipment", and all its contents are incorporated herein by reference.

[0002] The present invention relates to the technical field of photovoltaic power generation, and more specifically, to a PV terminal unit and an electrical equipment.

Background Art

[0003] In the field of photovoltaic power generation, electrical equipment such as inverters and combiner boxes mainly includes a case, PV terminals, a current detection board, a DC switch, and a printed circuit board. The PV cable is connected to the PV terminal, the PV terminal is connected to the current detection board by a cable, the current detection board is connected to one side of the DC switch by a cable, and the other side of the DC switch is connected to the printed circuit board by a cable.

[0004] In the above electrical equipment, fixing holes for attaching PV terminals are opened on the side plate of the case. The PV terminals are attached to the fixing holes from the outside of the case, and the fixing holes and the PV terminals correspond one by one. In this way, the number of PV terminals is determined and cannot be adjusted, so the expandability and compatibility of the PV terminals are poor, and the application range of the entire electrical equipment is reduced.

[0005] Also, each PV terminal is hermetically connected to the case. Generally, the PV terminal is hermetically connected to the case by a sealing member. To ensure the attachment of each PV terminal, the distance between two adjacent fixing holes is increased, thereby increasing the occupied space of all PV terminals and further increasing the volume of the entire electrical equipment.

Summary of the Invention

Problems to be Solved by the Invention

[0006] As described above, in order to make the number of PV terminals adjustable and improve expandability and compatibility, how to design the PV terminals is a problem to be solved by those skilled in the art.

[0007] In view of this, an object of the present invention is to provide a PV terminal unit that makes the number of PV terminals adjustable and improves expandability and compatibility. Another object of the present invention is to provide an electrical device including the above PV terminal unit.

Means for Solving the Problems

[0008] To achieve the above object, the present invention provides the following technical solutions. A PV terminal unit, including a mounting frame and at least one PV terminal, wherein the mounting frame has mounting positions for fixing the PV terminals, and the number of the mounting positions is at least two.

[0009] Preferably, the mounting frame is strip-shaped, and any two of the mounting positions are sequentially distributed along the length direction of the mounting frame.

[0010] Preferably, the PV terminal is removably fixed to the mounting frame.

[0011] Preferably, the mounting frame is a guide rail, and the PV terminal is locked to the guide rail. Or, the mounting frame is a structural member having mounting holes, and the PV terminal is fixed to the mounting holes by fastening members.

[0012] Preferably, the PV input end of the PV terminal is a positive PV input end or a negative PV input end, the number of the PV terminals is even, at least one of the PV terminals is a positive PV terminal, and at least one of the PV terminals is a negative PV terminal. The positive PV terminals and the negative PV terminals are alternately distributed, or the positive PV terminals are distributed at one end of the mounting frame, and the negative PV terminals are distributed at the other end of the mounting frame.

[0013] Preferably, the PV input end of the PV terminal includes a positive electrode PV input end and a negative electrode PV input end.

[0014] Preferably, a sensor is integrated in the PV terminal, and the PV terminal has a sensor signal output end for outputting a signal collected by the sensor. The PV terminal has a power input end for inputting a power supply for supplying power to the sensor, or a power supply circuit is integrated in the PV terminal, and the power supply circuit obtains power from a PV input cable connected to the PV terminal and supplies power to the sensor.

[0015] Preferably, a printed circuit board for terminals is integrated in the PV terminal. When the PV terminal has the power input end, the sensor is mounted on the printed circuit board for terminals. When the power supply circuit is integrated in the PV terminal, the sensor and the power supply circuit are mounted on the printed circuit board for terminals.

[0016] Preferably, the sensor includes a temperature sensor, and / or a current sensor, and / or a voltage sensor.

[0017] In the PV terminal unit provided by the present invention, the mounting frame has mounting positions for fixing PV terminals, and the number of mounting positions is at least two. In this way, at least two PV terminals can be integrated on the mounting frame. By adjusting the number of PV terminals on the mounting frame, the number of PV terminals of the entire PV terminal unit can be adjusted. Thereby, the expandability and compatibility are improved, the entire electrical device is compatible with various input arrangements, and the development efficiency is improved.

[0018] Moreover, according to the PV terminal unit provided by the present invention, at least two PV terminals can be integrated on the mounting frame. In the actual use process, the mounting frame can be directly fixed to the case. Compared with the prior art where each PV terminal is individually fixed to the case, the occupied space of all PV terminals is reduced, and further, the volume of the entire electrical device is reduced. Also, the mounting of the PV terminals is simplified, and the mounting efficiency is improved.

[0019] Based on the above PV terminal unit, the present invention further provides an electrical device, which includes the PV terminal unit described in any one of the above items.

[0020] Preferably, the electrical device further includes a case and electronic components fixed in the case, and the mounting frame is fixed to the case or the electronic components.

[0021] Preferably, the case is provided with a relief through-hole for exposing the PV input end of the PV terminal, and the PV terminal unit is hermetically connected to the relief through-hole.

[0022] Preferably, the case is provided with a relief through-hole for exposing the PV input end of the PV terminal, The electrical device is located outside the case and further includes a protective cover covering the relief through-hole. The protective cover is hermetically connected to the case and has a thread through-hole for inserting a PV input cable.

[0023] Preferably, the protective cover is provided with a waterproof ring fixed to the thread through-hole, and the waterproof ring hermetically connects the thread through-hole and the PV input cable.

[0024] Preferably, the waterproof ring can close the thread through-hole, and the waterproof ring is penetrated by the PV input cable.

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the necessary drawings for describing the embodiments or the prior art are briefly introduced below. The drawings described below are only the embodiments of the present invention. On the premise that those skilled in the art do not need to perform inventive labor, other drawings can be obtained based on the provided drawings.

Brief Description of the Drawings

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Modes for Carrying Out the Invention

[0027] The following combines the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. The described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained on the premise that those skilled in the art do not perform labor worthy of inventive step belong to the protection scope of the present invention.

[0028] As shown in FIGS. 1 to 6, the PV terminal unit provided by the embodiment of the present invention includes a mounting frame 100 and at least one PV terminal 200. The mounting frame 100 has mounting positions for fixing the PV terminals 200, and the number of mounting positions is at least two.

[0029] Here, one mounting position mounts one PV terminal 200, that is, the mounting positions correspond one by one to the PV terminals 200. It can be selected according to the actual needs for the number of the above PV terminals 200. That is, PV terminals 200 may be fixed to all the mounting positions, or PV terminals 200 may be fixed only to some of the mounting positions, and may not be fixed to some other mounting positions.

[0030] In the PV terminal unit provided by the above embodiment, the mounting frame 100 has mounting positions for fixing the PV terminals 200, and the number of mounting positions is at least two. In this way, at least two PV terminals 200 can be integrated on the mounting frame 100, and the number of the entire PV terminal unit can be adjusted by adjusting the number of PV terminals 200 on the mounting frame 100, thereby improving the expandability and compatibility, making the entire electrical device compatible with various input arrangements, and improving the development efficiency.

[0031] Also, according to the PV terminal unit provided by the above embodiment, at least two PV terminals 200 can be integrated on the mounting frame 100. In the actual use process, the mounting frame 100 can be directly fixed to the case 300. Compared with the prior art where each PV terminal is individually fixed to the case, the occupied space of all the PV terminals 200 is reduced, and further, the volume of the entire electrical device is reduced. Also, the mounting of the PV terminals 200 is simplified, and the mounting efficiency is improved.

[0032] In order to minimize the occupied space of the PV terminal unit, there are at least two PV terminals 200, and two adjacent PV terminals 200 are in contact with each other.

[0033] In the actual application process, there may be a gap between two adjacent PV terminals 200, and the size of the gap can be selected based on actual needs, and this embodiment does not limit it. Of course, there may also be a partition member between the two adjacent PV terminals 200, the partition member is fixed to the mounting frame 100, the PV terminal 200 is in contact with the partition member, or there is a gap between the PV terminal 200 and the partition member, and it can be selected based on actual needs, and this embodiment does not limit it.

[0034] For the shape of the mounting frame 100, it can be selected based on actual needs. Preferably, the mounting frame 100 is in a strip shape, and any two mounting positions are sequentially distributed along the length direction of the mounting frame 100. Here, if there are at least two PV terminals 200 on the mounting frame 100, any two PV terminals 200 are sequentially distributed along the length direction of the mounting frame 100.

[0035] Specifically, the mounting frame 100 is rectangular. In the actual application process, the mounting frame 100 may have other shapes, such as angular, etc., and this embodiment does not limit it.

[0036] In order to further improve the expandability and compatibility, the PV terminal 200 is removably fixed to the mounting frame 100. In this way, the number of PV terminals 200 on the mounting frame 100 can be adjusted to be small or large, and the adjustment range is expanded.

[0037] In the actual application process, the above PV terminal 200 may be removably fixed to the mounting frame 100 by a threaded chain, or may be removably fixed to the mounting frame 100 by a locking structure, and can be selected based on actual needs.

[0038] Specifically, if the above mounting frame 100 is a guide rail, the PV terminal 200 may be arranged to be locked to the guide rail 100. If the mounting frame 100 is a structural member having mounting holes, the PV terminal 200 may be arranged to be fixed to the mounting holes by fastening members. Here, the above PV terminal 200 is arranged to be removably fixed to the mounting holes by fastening members.

[0039] In the above PV terminal unit, for the specific structure of the PV terminal 200, it can be selected based on actual needs. Specifically, the above PV terminal 200 has a PV input end 210 and a PV output end 220, and the PV input cable 500 is connected to the PV input end 210. To facilitate installation, a PV connection pin is provided at the connection end of the PV input cable 500, and the PV connection pin is connected to the PV input end 210.

[0040] Preferably, the PV input end 210 of the above PV terminal 200 is a positive PV input end 210a or a negative PV input end 210b. In this case, the number of PV terminals 200 is even, at least one PV terminal 200 is a positive PV terminal 200a, and at least one PV terminal 200 is a negative PV terminal 200b.

[0041] Here, the PV input end 210 of the positive PV terminal 200a is the positive PV input end 210a, and the PV input end 210 of the negative PV terminal 200b is the negative PV input end 210b.

[0042] In the above PV terminal 200, as shown in FIG. 4, the positive electrode PV terminal 200a and the negative electrode PV terminal 200b are distributed alternately, or, as shown in FIG. 5, the positive electrode PV terminal 200a is distributed at one end of the mounting frame 100, and the negative electrode PV terminal 200b is distributed at the other end of the mounting frame 100, or the positive electrode PV terminal 200a and the negative electrode PV terminal 200b are distributed in other ways, and this embodiment does not limit this.

[0043] In the above PV terminal 200, when the positive electrode PV terminal 200a is distributed at one end of the mounting frame 100 and the negative electrode PV terminal 200b is distributed at the other end of the mounting frame 100, the adjacent positive electrode PV terminal 200a and negative electrode PV terminal 200b may be in contact, or may be arranged such that there is a gap between the adjacent positive electrode PV terminal 200a and negative electrode PV terminal 200b. Here, the positive electrode PV terminal 200a and the negative electrode PV terminal 200b are distributed along the same direction. For the ease of connection, the positive electrode PV terminal 200a and the negative electrode PV terminal 200b may be arranged to be distributed in the same row.

[0044] In the actual application process, as shown in FIG. 6, the PV input end 210 of the above PV terminal 200 may include a positive electrode PV input end 210a and a negative electrode PV input end 210b. In each PV terminal 200, as shown in FIG. 6, the positive electrode PV input end 210a and the negative electrode PV input end 210b may be distributed in sequence along the height direction of the PV terminal 200, or in each PV terminal 200, the positive electrode PV input end 210a and the negative electrode PV input end 210b may be distributed in sequence along the width direction of the PV terminal 200.

[0045] Here, the positive electrode PV input end 210a and the negative electrode PV input end 210b are located on the same side of the PV terminal 200.

[0046] In an electrical device, generally, it is necessary to collect required signals, such as temperature signals, current signals, voltage signals, etc. To simplify the structure, a sensor is integrated in the above PV terminal 200, and the PV terminal 200 is arranged to have a sensor signal output end for outputting the signals collected by the sensor.

[0047] To ensure power supply to the sensor, the PV terminal 200 has a power input terminal for inputting a power source that supplies power to the sensor. Here, the voltage input terminal is connected to the sensor. To facilitate cable connection, the power input terminal and the PV input terminal 210 are located on the same side of the PV terminal 200.

[0048] In the actual application process, a power supply circuit is integrated into the PV terminal 200. The power supply circuit obtains power from the PV input cable 500 connected to the PV terminal 200 and supplies power to the sensor.

[0049] According to the above PV terminal unit, in order to easily assemble the sensor and the power supply circuit, a printed circuit board for terminals is integrated into the PV terminal 200. When the PV terminal 200 has a power input terminal, a sensor is mounted on the printed circuit board for terminals. When a power supply circuit is integrated into the PV terminal 200, the sensor and the power supply circuit are mounted on the printed circuit board for terminals.

[0050] For the type of the above sensor, it can be selected based on actual needs. For example, the above sensor includes a temperature sensor, and / or a current sensor, and / or a voltage sensor, etc., and this embodiment does not limit it.

[0051] Based on the PV terminal unit provided by the above embodiment, this embodiment further provides an electrical device. As shown in FIGS. 7 to 11, the electrical device includes the PV terminal unit described in the above embodiment.

[0052] Since the PV terminal unit provided by the above embodiment has the above technical effects and the electrical device includes the PV terminal unit, the electrical device also has corresponding technical effects and will not be elaborated in this specification.

[0053] The above electrical equipment includes a case 300 and electronic components fixed within the case 300, and the mounting frame 100 is fixed to the case 300 or the electronic components. Specifically, the above mounting frame 100 may penetrate the side plate of the case 300 or be located inside the case 300, and it may be selected based on actual needs.

[0054] The above electronic components may be a printed circuit board or a current detection board, and may be selected based on actual needs, and the present embodiment does not limit this.

[0055] To ensure cable connection, the above case 300 is provided with a relief through-hole 310 for the PV input end 210 of the PV terminal 200 to be exposed. To ensure protection requirements, the above PV terminal unit and the relief through-hole 310 may be arranged to be hermetically connected, or the above electrical equipment is located outside the case 300 and further includes a protective cover 400 covering the relief through-hole 310, and the protective cover 400 is hermetically connected to the case 300 and may be arranged to have a thread through-hole for the PV input cable 500 to be inserted.

[0056] In the actual application process, to facilitate sealing, the above electrical equipment includes the above protective cover 400. To simplify the structure, there is one relief through-hole 310, that is, only one relief through-hole 310 can expose the PV input ends 210 of all the PV terminals 200.

[0057] To facilitate the sealing between the PV input cable 500 and the thread through-hole, the above protective cover 400 is provided with a waterproof ring 600 fixed to the thread through-hole, and the waterproof ring 600 hermetically connects the thread through-hole and the PV input cable 500.

[0058] Regarding the type of the waterproof ring 600, it may be selected based on actual needs. To facilitate sealing and cable connection, the above waterproof ring 600 enables the closure of the thread passing hole, and the waterproof ring 600 is penetrated and passed through by the PV input cable 500. Specifically, when the PV input cable 500 is not installed, the waterproof ring 600 closes the thread passing hole, and when it is necessary to install the PV input cable 500, the PV input cable 500 penetrates and passes through the waterproof ring 600. In this way, when there is no need to install the PV input cable 500, no other parts are required to close the thread passing hole, reducing the parts, simplifying the structure, and reducing the cost.

[0059] In the actual application process, the above waterproof ring 600 may simply seal and connect the thread passing hole and the PV input cable 500, and may use other parts to individually close the thread passing hole, and is not limited to the above embodiments.

[0060] According to the above description of the disclosed embodiments, those skilled in the art can implement or use the present invention. Various corrections to these embodiments are obvious to those skilled in the art, and the general principles defined in this specification can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to these embodiments described in this specification, but conforms to the broadest scope consistent with the principles and novel features disclosed in this specification.

Claims

1. A PV terminal unit, comprising a mounting frame (100) and at least one PV terminal (200), wherein the mounting frame (100) has a mounting position for fixing the PV terminal (200), and the number of the mounting positions is at least two. The mounting frame (100) is strip-shaped, and any two of the mounting positions are sequentially distributed along the length direction of the mounting frame (100). A sensor is integrated in the PV terminal (200), and the PV terminal (200) has a sensor signal output end for outputting a signal collected by the sensor. A power supply circuit is integrated in the PV terminal (200), and the power supply circuit obtains power from a PV input cable (500) connected to the PV terminal (200) and supplies power to the sensor. The PV terminal unit is characterized by the above.

2. The PV terminal unit according to claim 1, wherein the PV terminal (200) is removably fixed to the mounting frame (100).

3. The mounting frame (100) is a guide rail, and the PV terminal (200) is locked to the guide rail (100). Or, the mounting frame (100) is a structural member having mounting holes, and the PV terminal (200) is fixed to the mounting holes by fastening members. The PV terminal unit according to claim 1 is characterized by the above.

4. The PV input end (210) of the PV terminal (200) is a positive PV input end (210a) or a negative PV input end (210b), the number of the PV terminals (200) is even, at least one of the PV terminals (200) is a positive PV terminal (200a), and at least one of the PV terminals (200) is a negative PV terminal (200b). The positive PV terminals (200a) and the negative PV terminals (200b) are alternately distributed, or the positive PV terminals (200a) are distributed at one end of the mounting frame (100), and the negative PV terminals (200b) are distributed at the other end of the mounting frame (100). The PV terminal unit according to claim 1 is characterized by the above.

5. The PV terminal unit according to claim 1, wherein the PV input end (210) of the PV terminal (200) includes a positive PV input end (210a) and a negative PV input end (210b).

6. A printed circuit board for terminals is integrated in the PV terminal (200). When the PV terminal (200) has the power input terminal, the sensor is mounted on the printed circuit board for the terminal. When the power circuit is integrated in the PV terminal (200), the PV terminal unit according to claim 1, wherein the sensor and the power circuit are mounted on the printed circuit board for the terminal.

7. The PV terminal unit according to claim 1, wherein the sensor includes a temperature sensor, and / or a current sensor, and / or a voltage sensor.

8. An electrical device, comprising the PV terminal unit according to any one of claims 1 to 5.

9. The electrical device according to claim 8, further comprising a case (300) and electronic components fixed in the case (300), wherein the mounting frame (100) is fixed to the case (300) or the electronic components.

10. The electrical device according to claim 9, wherein the case (300) is provided with a relief through hole (310) for exposing the PV input terminal (210) of the PV terminal (200), and the PV terminal unit and the relief through hole (310) are hermetically connected.

11. The case (300) is provided with a relief through hole (310) for exposing the PV input terminal (210) of the PV terminal (200). The electrical device is located outside the case (300) and further includes a protective cover (400) covering the relief through hole (310). The protective cover (400) is hermetically connected to the case (300) and has a thread through hole for inserting a PV input cable (500). The electrical device according to claim 9.

12. The protective cover (400) is provided with a waterproof ring (600) fixed to the thread through hole. The waterproof ring (600) hermetically connects the thread through hole and the PV input cable (500). The electrical device according to claim 11.

13. The electrical device according to claim 12, wherein the waterproof ring (600) enables the thread through hole to be closed, and the waterproof ring (600) is penetrated and penetrated by the PV input cable (500).

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