Lightning protection module and photovoltaic module

Abstract

The utility model relates to a lightning protection module and a photovoltaic module. The lightning protection module comprises a lightning protection main body, a connecting assembly and a grounding assembly, the lightning protection main body is provided with a lightning protection circuit and used for being installed on an external assembly, the connecting assembly is provided with an access end and an access end, the access end is electrically connected with the lightning protection circuit, the access end is electrically connected with the external assembly, one end of the grounding assembly is electrically connected with the lightning protection circuit, and the other end of the grounding assembly is electrically connected with the external assembly. And the other end is grounded. The photovoltaic module can be provided with the lightning protection module, the installation mode of the lightning protection module is consistent with that of a conventional module, and the replacement mode of the lightning protection module is simple and convenient. The production and assembly difficulty is low, and the overall production takt of the photovoltaic module is not influenced; therefore, the photovoltaic module has a remarkable lightning protection effect, and the safety of a user is greatly improved; the appearance of the photovoltaic module is reserved to the maximum extent under the condition that the photovoltaic module has the lightning protection capability, and the appearances of the modules in installation modes such as curtain wall structures and the like are not affected.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic lightning protection technology, and in particular to lightning protection modules and photovoltaic components. Background Art

[0002] Lightning is extremely harmful to photovoltaic power stations. It not only affects the operation of photovoltaic modules, but also restricts the conventional application of photovoltaic modules. Lightning strikes have a particularly serious impact on the tempered glass in photovoltaic modules. Tempered glass struck by lightning may cause local cracks in the cell at the moment of explosion.

[0003] Usually, the most traditional way to protect photovoltaic power stations from direct lightning strikes is to arrange lightning protection devices such as lightning rods or lightning strips on the top of the photovoltaic power station building. However, in some special installation sites, such as balconies and BIPV (BIPV Building Integrated Photovoltaic), there is a lack of favorable space for directly installing lightning protection devices, making them difficult to install. Summary of the invention

[0004] Based on this, it is necessary to provide a lightning protection module and a photovoltaic component to address the problem that it is difficult to directly assemble a lightning termination device.

[0005] The embodiment of the first aspect of the present application provides a lightning protection module, including:

[0006] A lightning protection body, wherein the lightning protection body is provided with a lightning protection circuit and is used to be installed on an external component;

[0007] A connection component, wherein the connection component is provided with an input end and an output end, the input end is electrically connected to the lightning protection circuit, and the output end is electrically connected to the external component;

[0008] A grounding component, one end of which is electrically connected to the lightning protection circuit, and the other end of which is used for grounding.

[0009] In one embodiment, the external component includes a photovoltaic body and an external conventional component;

[0010] The connection terminal includes an internal connection terminal and an external connection terminal. The internal connection terminal is used to be electrically connected to the photovoltaic body, and the external connection terminal is used to be electrically connected to an external conventional component.

[0011] In one embodiment, the internal outlet includes:

[0012] a first connector, one end of which is electrically connected to the lightning protection circuit, and the other end of which is electrically connected to the positive terminal box of the photovoltaic body;

[0013] A second connector, wherein one end of the second connector is electrically connected to the lightning protection circuit, and the other end of the second connector is electrically connected to the negative electrode junction box of the photovoltaic body.

[0014] In one embodiment, the external connection terminal includes:

[0015] a third connector, one end of which is electrically connected to the lightning protection circuit, and the other end of which is electrically connected to the positive electrode of the external conventional component;

[0016] A fourth connector, wherein one end of the third connector is electrically connected to the lightning protection circuit, and the other end is used to be electrically connected to the negative pole of the external conventional component.

[0017] In one embodiment, the grounding component includes a conductive sheet, one end of which is electrically connected to the lightning protection circuit, and the other end of which is used for grounding.

[0018] In one embodiment, the conductive sheet comprises:

[0019] A conductive metal clip, the conductive metal clip is fixedly connected to the lightning protection body,

[0020] A metal conductor, one end of which is electrically connected to the conductive metal clip, and the other end of which extends into the interior of the lightning protection body and is electrically connected to the lightning protection circuit;

[0021] The lightning protection body is fixedly assembled on the frame of the photovoltaic body through the conductive metal clip.

[0022] In one embodiment, the lightning protection body includes:

[0023] Lightning protection box;

[0024] A plurality of varistors are arranged in parallel in the lightning protection box to form the lightning protection circuit.

[0025] In one of the embodiments, a connection hole is provided on the lightning protection box, and the connection hole is used for the connection component to pass through;

[0026] A waterproof plug is provided between the connecting hole and the connecting assembly.

[0027] The embodiment of the second aspect of the present application provides a photovoltaic module, including:

[0028] Photovoltaic subject;

[0029] In the lightning protection module as described in any of the above embodiments, the lightning protection body is installed on the photovoltaic body.

[0030] In one of the embodiments, the grounding component is electrically connected to a frame of the photovoltaic body.

[0031] According to the lightning protection module of the embodiment of the present application, the lightning protection module is installed on the external component, and the electrical connection with the external component is achieved through the connecting component, so that the external component has its own lightning protection module. It can be understood that when the external component is a photovoltaic component, the lightning protection module is installed on the photovoltaic component, and the electrical connection with the photovoltaic component is achieved through the connecting component, so that the photovoltaic component has its own lightning protection module. The lightning protection module can be bundled and packaged when the photovoltaic component leaves the factory. The installation method of the lightning protection module is consistent with the installation method of the conventional component, and the replacement method of the lightning protection module is simple and convenient; its production and assembly difficulty is low, and it will not affect the overall production rhythm of the photovoltaic component; the photovoltaic component has a significant lightning protection effect, which greatly improves the safety of the user; the photovoltaic component retains the appearance of the component to the maximum extent while having lightning protection capabilities, so that the appearance of components installed in some curtain wall structures and other installation methods is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of a lightning protection module according to an embodiment of the present application.

[0033] Figure 2 This is a schematic diagram of a lightning protection circuit in a lightning protection module according to an embodiment of the present application.

[0034] Figure 3 It is a schematic diagram of the partial structure of a lightning protection module according to an embodiment of the present application.

[0035] Figure 4 It is a schematic structural diagram of a photovoltaic assembly according to an embodiment of the present application.

[0036] Reference numerals:

[0037] 1000. Photovoltaic modules;

[0038] 100. Lightning protection module;

[0039] 110, lightning protection body; 111, lightning protection box; 1111, connection hole; 1112, waterproof plug; 112, varistor; 1121, circuit board; 1121a, first tin block; 1121b, second tin block;

[0040] 120, connection assembly; 121, access terminal; 122, access terminal; 1221, internal access terminal; 1221a, first connector; 1221b, second connector; 1222, external access terminal; 1222a, third connector; 1222b, fourth connector;

[0041] 130, grounding assembly; 131, conductive sheet; 1311, conductive metal clip; 1311a, fixing sheet; 1311b, fixing bolt; 1312, metal conductor;

[0042] 200. Photovoltaic entities;

[0043] 210, positive electrode junction box; 220, negative electrode junction box; 230, frame; 240, middle junction box. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0045] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0046] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0050] See also Figure 1 At least one embodiment of the present application proposes a lightning protection module 100, which includes a lightning protection body 110, a connecting component 120 and a grounding component 130. The lightning protection body 110 is provided with a lightning protection circuit. The lightning protection body 110 is used to be installed on an external component. The connecting component 120 is provided with an access terminal 121 and an output terminal 122. The access terminal 121 is electrically connected to the lightning protection circuit, and the output terminal 122 is electrically connected to the external component. One end of the grounding component 130 is electrically connected to the lightning protection circuit, and the other end is used for grounding.

[0051] According to the lightning protection module 100 of the embodiment of the present application, the lightning protection module 100 is installed on the external component, and the electrical connection with the external component is realized through the connecting component 120, so that the external component has its own lightning protection module 100. It can be understood that when the external component is a photovoltaic main body 200, the lightning protection module 100 is installed on the photovoltaic main body 200, and the electrical connection with the photovoltaic main body 200 is realized through the connecting component 120, so that the photovoltaic main body 200 has its own lightning protection module 100. The lightning protection module 100 can be bundled and packaged when the photovoltaic component 1000 leaves the factory. The installation method of the lightning protection module 100 is consistent with the installation method of the conventional component, and the replacement method of the lightning protection module 100 is simple and convenient; its production and assembly difficulty is low, and it will not affect the overall production rhythm of the photovoltaic component 1000; the photovoltaic component 1000 has a significant lightning protection effect, which greatly improves the safety of the user; the photovoltaic component 1000 retains the appearance of the component to the maximum extent under the condition of having lightning protection capability, so that the appearance of the components of some installation methods such as curtain wall structures is not affected.

[0052] See also Figure 1 In some embodiments, the external component includes a photovoltaic body 200 and an external conventional component. The connection terminal 122 includes an internal connection terminal 1221 and an external connection terminal 1222, the internal connection terminal 1221 is used to be electrically connected to the photovoltaic body 200, and the external connection terminal 1222 is used to be electrically connected to an external conventional component. Through the above configuration, the lightning protection module 100 is electrically connected to the photovoltaic body 200 through the internal connection terminal 1221, and can also be electrically connected to an external conventional component through the external connection terminal 1222, so as to achieve flexible installation and improve versatility.

[0053] See also Figure 1 In some embodiments, the internal output terminal 1221 includes a first connector 1221a and a second connector 1221b, one end of the first connector 1221a is electrically connected to the lightning protection circuit, and the other end is electrically connected to the positive terminal box 210 of the photovoltaic body 200; one end of the second connector 1221b is electrically connected to the lightning protection circuit, and the other end is electrically connected to the negative terminal box 220 of the photovoltaic body 200.

[0054] Specifically, in some embodiments, a three-part junction box is provided on the photovoltaic body 200, which includes a positive junction box 210, an intermediate junction box 240, and a negative junction box 220. The first connector 1221a connects the lightning protection circuit with the positive junction box 210, and the second connector 1221b connects the lightning protection circuit with the negative junction box 220. It can be understood that the junction box of the present application can also be an integrated junction box.

[0055] In some embodiments, the external connection terminal 1222 includes a third connector 1222a and a fourth connector 1222b, one end of the third connector 1222a is electrically connected to the lightning protection circuit, and the other end is used to be electrically connected to the positive electrode of the external conventional component; one end of the third connector 1222a is electrically connected to the lightning protection circuit, and the other end is used to be electrically connected to the negative electrode of the external conventional component. The third connector 1222a connects the lightning protection circuit to the positive electrode of the external conventional component, and the fourth connector 1222b connects the lightning protection circuit to the negative electrode of the external conventional component.

[0056] See also Figure 1 and Figure 2 In some embodiments, the lightning protection body 110 includes a lightning protection box 111 and a plurality of varistors 112 . The varistors 112 are arranged inside the lightning protection box 111 . The plurality of varistors 112 are arranged in parallel inside the lightning protection box 111 to form a lightning protection circuit.

[0057] The varistor 112 is set in the lightning protection box 111, and its working voltage will be higher than the open circuit voltage of the component. This solution does not take into account the actual working capacity of the device, so the varistor 112 parallel connection solution is adopted, in which the number of varistors 112 is not limited, but the overall working voltage cannot be lower than the open circuit voltage of the component. When a lightning strike occurs, the varistor 112 starts to work and discharges the instantaneous current to the ground through the grounding component 130. At this time, the appearance and performance of the component should be protected.

[0058] Specifically, in some embodiments, two varistors 112 are provided, and the two varistors 112 are provided in parallel. The photovoltaic power generation panel in the photovoltaic main body 200 is connected in parallel with the lightning protection circuit containing two parallel varistors 112, and the other end of the lightning protection box 111 is grounded. When a lightning strike occurs, the instantaneous current is released to the varistor 112 through the photovoltaic power generation panel, and then the varistor 112 transfers the current to the ground to achieve the discharge of the current. At this time, the appearance and performance of the photovoltaic module 1000 are protected. The other end of the photovoltaic power generation panel array of the photovoltaic main body 200 is connected to the photovoltaic grid-connected inverter and connected to the grid normally, which is the same as the grid-connected method of the conventional module array.

[0059] In some embodiments, a connection hole 1111 is provided on the lightning protection box 111, and the connection hole 1111 is for the connection component 120 to pass through. A waterproof plug 1112 is provided between the connection hole 1111 and the connection component 120. The connection component 120 passes through the connection hole 1111, and one end extends into the interior of the lightning protection box 111, and is electrically connected to the lightning protection circuit inside the lightning protection box 111; the other end extends out of the lightning protection box 111, reaches the interior of the lightning protection box 111, and is electrically connected to the external components outside. The waterproof plug 1112 plays a certain role in sealing and waterproofing.

[0060] Specifically, a circuit board 1121 is connected to the bottom of the parallel varistor 112, and the circuit board 1121 is connected to a first tin block 1121a and a second tin block 1121b, wherein the first tin block 1121a is used to be electrically connected to the end of the connecting component 120 extending into the lightning protection box 111, and the second tin block 1121b is used to be electrically connected to the end of the grounding component 130 extending into the lightning protection box 111.

[0061] In some embodiments, the grounding assembly 130 includes a conductive sheet 131, one end of which is electrically connected to the lightning protection circuit, and the other end is used for grounding. Specifically, one end of the conductive sheet 131 extends into the lightning protection box 111 and is electrically connected to the second tin block 1121b to achieve electrical connection with the lightning protection circuit, and the other end extends out of the lightning protection box 111 for grounding.

[0062] Specifically, in some embodiments, the conductive sheet 131 includes a conductive metal clip 1311 and a metal conductor 1312, the conductive metal clip 1311 is fixedly connected to the lightning protection body 110, one end of the metal conductor 1312 is electrically connected to the conductive metal clip 1311, and the other end extends to the inside of the lightning protection body 110 and is electrically connected to the lightning protection circuit. The lightning protection body 110 is fixedly assembled on the frame 230 of the photovoltaic body 200 through the conductive metal clip 1311.

[0063] Among them, the conductive metal clip 1311 is provided with a fixing sheet 1311a, the fixing sheet 1311a is fixedly connected to the outer wall of the lightning protection box 111, and the conductive metal clip 1311 is fixed to the fixing sheet 1311a by a fixing bolt 1311b. The conductive metal clip 1311 is electrically connected to the metal conductor 1312. The metal conductor 1312 extends into the interior of the lightning protection box 111 and is electrically connected to the lightning protection circuit inside the lightning protection box 111. The grounding of the conductive sheet 131 is realized by the conductive metal clip 1311 fixing clip being arranged on the frame 230 of the photovoltaic cone, and the frame 230 of the photovoltaic power generation panel of the photovoltaic main body 200 is connected to realize the leakage grounding of the conductive metal clip 1311. The frame 230 of the photovoltaic main body 200 itself is a conductive metal, so no other grounding connection is required, whether it is installed on a bracket or placed directly on the ground, it can be vented to the ground.

[0064] See also Figure 4 At least one embodiment of the present application provides a photovoltaic assembly 1000 , including a photovoltaic body 200 and a lightning protection module 100 as in any of the above embodiments, wherein the lightning protection body 110 is installed on the photovoltaic body 200 .

[0065] According to the photovoltaic component 1000 of the embodiment of the present application, it has its own lightning protection module 100, and the installation method of the lightning protection module 100 is consistent with the installation method of the conventional component, and the replacement method of the lightning protection module 100 is simple and convenient; its production and assembly difficulty is low, and will not affect the overall production rhythm of the photovoltaic component 1000; the photovoltaic component 1000 has a significant lightning protection effect, which greatly improves the safety of the user; the photovoltaic component 1000 retains the appearance of the component to the maximum extent while having lightning protection capabilities, so that the appearance of components installed in some curtain wall structures and other ways is not affected.

[0066] Since the photovoltaic component 1000 has already connected the lightning protection module 100 to the conventional component body before leaving the factory, there is no problem with installation and construction. The user only needs to connect the third connector 1222a and the fourth connector 1222b to the front-stage and rear-stage components respectively. While the construction difficulty is reduced, the possible DC arc will be completely eliminated due to the existence of the varistor 112, and the dual risks of DC arc and lightning strike can be eliminated at the same time.

[0067] In some embodiments, the grounding component 130 is electrically connected to the frame 230 of the photovoltaic body 200. The grounding component 130 is directly electrically connected to the frame 230 of the photovoltaic power generation panel of the photovoltaic body 200 to achieve grounding of the grounding component 130.

[0068] The photovoltaic module 1000 of the embodiment of the present application improves the safety of the photovoltaic power station while greatly reducing the manufacturing cost, based on the following points:

[0069] 1. The lightning protection module 100 can be manufactured separately by a third party. Its installation method is quite simple. The overall time will not affect the production rhythm of the production line. It is fast and stable.

[0070] 2. To cater to the development trend of new energy, this solution can be used as a technical reserve and a method and measure to improve the safety of power plants;

[0071] 3. The application scenarios of this solution can focus on photovoltaic installation sites such as BIPV where it is not convenient to install the lightning protection module 100. The wall itself is a good conductor, and the photovoltaic module 1000 in the embodiment of the present application has a good coupling with the building body.

[0072] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A lightning protection module, characterized in that: include: A lightning protection body, wherein the lightning protection body is provided with a lightning protection circuit and is used to be installed on an external component; A connection component, wherein the connection component is provided with an input end and an output end, the input end is electrically connected to the lightning protection circuit, and the output end is electrically connected to the external component; A grounding component, one end of which is electrically connected to the lightning protection circuit, and the other end of which is used for grounding; The lightning protection body comprises: Lightning protection box; A plurality of varistors are arranged in parallel in the lightning protection box to form the lightning protection circuit.

2. The lightning protection module according to claim 1, characterized in that: The external components include a photovoltaic body and external conventional components; The connection terminal includes an internal connection terminal and an external connection terminal. The internal connection terminal is used to be electrically connected to the photovoltaic body, and the external connection terminal is used to be electrically connected to the external conventional component.

3. The lightning protection module according to claim 2, characterized in that: The internal output terminal comprises: a first connector, one end of which is electrically connected to the lightning protection circuit, and the other end of which is electrically connected to the positive terminal box of the photovoltaic body; A second connector, wherein one end of the second connector is electrically connected to the lightning protection circuit, and the other end of the second connector is electrically connected to the negative electrode junction box of the photovoltaic body.

4. The lightning protection module according to claim 2, characterized in that: The external connection terminal comprises: a third connector, one end of which is electrically connected to the lightning protection circuit, and the other end of which is electrically connected to the positive electrode of the external conventional component; A fourth connector, wherein one end of the third connector is electrically connected to the lightning protection circuit, and the other end is used to be electrically connected to the negative pole of the external conventional component.

5. The lightning protection module according to claim 2, characterized in that: The grounding component comprises a conductive sheet, one end of which is electrically connected to the lightning protection circuit, and the other end of which is used for grounding.

6. The lightning protection module according to claim 5, characterized in that: The conductive sheet comprises: A conductive metal clip, the conductive metal clip is fixedly connected to the lightning protection body, A metal conductor, one end of which is electrically connected to the conductive metal clip, and the other end of which extends into the interior of the lightning protection body and is electrically connected to the lightning protection circuit; The lightning protection body is fixedly assembled on the frame of the photovoltaic body through the conductive metal clip.

7. The lightning protection module according to claim 1, characterized in that: The lightning protection box is provided with a connection hole, and the connection hole is used for the connection component to pass through; A waterproof plug is provided between the connecting hole and the connecting assembly.

8. A photovoltaic module, characterized in that: include: Photovoltaic subject; The lightning protection module according to any one of claims 1 to 7, wherein the lightning protection body is installed on the photovoltaic body.

9. The photovoltaic module according to claim 8, characterized in that: The grounding component is electrically connected to the frame of the photovoltaic body.

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