A cadmium telluride photovoltaic building component and a method of construction thereof

Abstract

This invention discloses a cadmium telluride photovoltaic building component and its construction method, belonging to the field of building-integrated photovoltaics (BIPV) technology. The component includes a cadmium telluride glass module and an electromechanical integrated frame surrounding its edge. The frame is composed of a top frame, a bottom frame, a first side frame, and a second side frame. The top frame has a male conductive pin, and the bottom frame has a female conductive slot. In the vertical direction, when adjacent components are spliced, the female conductive slot of the upper component engages with the male conductive pin of the lower component, simultaneously achieving mechanical fixation and electrical conduction. The construction method includes steps such as building keel construction, installation of the first row of components, blind-plug splicing construction, repeated installation, and edge sealing testing. This invention integrates mechanical splicing and electrical connection, completing the fixation and conductive connection between components through a single plug-in operation, eliminating the need for separate wiring, simplifying the construction process, and improving installation efficiency.

Description

Technical Field

[0001] This invention relates to the field of building-integrated photovoltaics (BIPV), and in particular to a cadmium telluride photovoltaic building component and its construction method. Background Technology

[0002] Cadmium telluride (CdTe) thin-film solar cells possess advantages such as high power generation capacity, good performance in low-light conditions, and low temperature coefficient. When combined with building envelopes, CdTe photovoltaic building components represent an important development direction for building-integrated photovoltaics (BIPV). These components serve both as building envelope materials and power generation functions, making them significant for achieving green and zero-energy buildings.

[0003] Currently, there are several patents related to cadmium telluride photovoltaic building components in existing technologies. Chinese utility model patent CN206060636U (publication date: March 29, 2017) discloses a cadmium telluride photovoltaic building component, including a cadmium telluride thin-film module, an insulation layer, an inorganic material backsheet, and a frame. An insulation layer is placed between the cadmium telluride thin-film module and the inorganic material backsheet, and the three are fixed together by the frame. This component can be used as a wall, roof, curtain wall, etc., in buildings. However, in this solution, adjacent components are only spliced ​​together using conventional building methods such as masonry or external mounting. There is no electrical connection between the components, and wiring operations still need to be performed one by one during construction, just like traditional photovoltaic systems, resulting in low installation efficiency.

[0004] Chinese invention patent application CN117418632A (publication date: January 19, 2024) discloses an installation structure and construction method for a cadmium telluride power-generating glass curtain wall. The curtain wall frame consists of several sub-frames, with the columns and beams of the sub-frames connected by U-shaped blocks. Two adjacent columns in the vertical direction are connected by plug-in blocks. The mounting groove is equipped with adjustable sliding plates to accommodate power-generating glass of different sizes. While this solution provides a modular installation frame, the connection between the columns and beams is only mechanically assembled; the electrical connections of the components still rely on external junction boxes and cables, failing to integrate the mechanical and electrical connections.

[0005] Chinese invention patent application CN121183897A (publication date: December 23, 2025) discloses a prefabricated cadmium telluride solar module and a solar curtain wall. The module achieves tilt angle adjustment of the curtain wall body through a rotating connection between an outer frame and an inner frame, in conjunction with an auxiliary electric actuator and a winch. It also includes a cleaning spray plate. This solution focuses on the adjustable angle of the components and their cleaning function, but it does not address the electrical connections between the components, and its structure is relatively complex, relying on multiple electrically driven components, resulting in high manufacturing and maintenance costs.

[0006] In summary, existing cadmium telluride photovoltaic building components suffer from several drawbacks. Firstly, the mechanical splicing and electrical connections of the components are independent, requiring separate mechanical installation and electrical wiring during construction, resulting in cumbersome procedures and low installation efficiency. Secondly, the components have complex structures that rely on external wiring equipment and electric actuators, hindering large-scale application.

[0007] Therefore, there is an urgent need to provide a cadmium telluride photovoltaic building component and its construction method that can automatically complete electrical conduction while mechanically splicing, simplify construction procedures, and improve installation efficiency. Summary of the Invention

[0008] To address the above technical problems, this invention provides a cadmium telluride photovoltaic building component, comprising: Cadmium telluride glass components; An electromechanical integrated frame surrounds and seals the edge of the cadmium telluride glass assembly; the outer side of the electromechanical integrated frame is provided with an installation groove for engaging with the building keel; the electromechanical integrated frame includes a first side frame, a second side frame, a top frame, and a bottom frame that are spliced ​​together. The top frame is provided with a male conductive pin, and the outer side wall of the bottom frame is provided with a female conductive slot that matches the male conductive pin. In the vertical direction, when two adjacent cadmium telluride photovoltaic building components are spliced ​​together, the female conductive slot of the upper component and the male conductive pin of the lower component are inserted and engaged to simultaneously achieve mechanical fixation and electrical conduction between adjacent components.

[0009] Furthermore, a hidden wiring channel is provided inside the electromechanical integrated frame. The hidden wiring channel is used to accommodate the lead wires of the cadmium telluride glass assembly. The positive terminal of the lead wire is electrically connected to the male conductive pin, and the negative terminal of the lead wire is electrically connected to the female conductive slot.

[0010] Furthermore, both the base of the male conductive pin and the opening of the female conductive slot are provided with EPDM waterproof sealing rings. When the two are inserted, the EPDM waterproof sealing rings are deformed under pressure to form a closed waterproof chamber.

[0011] Furthermore, a flexible polyurethane buffer layer is filled between the cadmium telluride glass assembly and the electromechanical integrated frame, and the elastic modulus of the flexible polyurethane buffer layer is lower than that of the electromechanical integrated frame.

[0012] Furthermore, the back of the electromechanical integrated frame is integrated with a thermal insulation layer, which is solidified into an integral structure with the back of the electromechanical integrated frame and the cadmium telluride glass assembly through a foaming process.

[0013] Furthermore, the free end of the conductive head is either a guide cone or a guide fillet, and the opening of the female conductive slot is provided with an outwardly expanding guide flare to provide interlocking guidance during blind insertion.

[0014] Furthermore, the mounting groove has a dovetail-shaped cross-section to form a sliding guide fit with the slide rail groove in the vertical direction.

[0015] Furthermore, the cadmium telluride glass assembly is fixedly connected to the electromechanical integrated frame by bolts or conventional clips.

[0016] Furthermore, the male conductive pin and the female conductive slot are divided into multiple groups according to different connection polarities. By rotating the components 180 degrees during installation, series or parallel connection between adjacent components can be selectively achieved.

[0017] This application also provides a construction method for cadmium telluride photovoltaic building components, including the following steps: Step S1, Construction of building keel: Install a supporting keel network on the building base; the supporting keel has a pre-set slide rail groove that matches the installation groove, and is leveled; Step S2, First row component installation: Slide the first row of cadmium telluride photovoltaic building components at the bottom layer into the mounting groove and fix them on the slide rail groove, and connect their output end to the main combiner box; Step S3, blind insertion splicing construction: slide the previous row of cadmium telluride photovoltaic building components into the slide rail through the installation groove, align the female conductive slot of its bottom frame with the male conductive pin of the top frame of the next row of components and press down until the male conductive pin engages and locks with the female conductive slot, so as to simultaneously complete the mechanical fixing and electrical connection. Step S4: Repeat step S3 until all components are installed. Step S5, Edge Sealing and Testing: Insulate and seal the edges of the array with waterproof sealant, and perform overall system photoelectric performance and insulation withstand voltage tests.

[0018] Furthermore, after the splicing is completed in step S3, silicone sealant is injected into the splicing gaps of adjacent components, so that the splice and the EPDM waterproof sealing ring together form a double waterproof structure.

[0019] Furthermore, the insulating edge sealing process in step S5 includes: fastening an insulating protective cover onto the exposed male conductive pin or female conductive slot of the outermost component of the array, and filling all gaps between the cover and the frame with sealant.

[0020] Compared with existing technologies, the advantages and effects of this application are as follows: 1. This application uses a male conductive pin and a female conductive slot on the electromechanical integrated frame. The free end of the male pin is provided with a guide cone surface, and the opening of the female pin is provided with a guide flared mouth, which provides insertion guidance. The barbed locking protrusion and the slot achieve mechanical locking to ensure a firm connection and prevent it from falling off. When the components are vertically inserted, mechanical fixing and electrical connection are completed simultaneously, eliminating the need for a separate wiring process and significantly improving installation efficiency.

[0021] 2. This application features a concealed cable routing channel inside the frame, with the lead wires connected to male and female connectors within the channel to prevent cable exposure and reduce the risk of aging and installation damage.

[0022] 3. The male and female connectors of this application are equipped with EPDM waterproof sealing rings to form a closed waterproof chamber. Silicone sealant is injected into the splicing gaps to form a double waterproof structure, ensuring the long-term reliability of the electrical connection parts. The back of the frame is integrated with a foamed insulation layer, which is cured into one piece with the glass components, and has both power generation and building insulation functions, reducing the number of subsequent insulation construction procedures.

[0023] 4. The outer side of the frame of this application is provided with an installation groove, which cooperates with the keel slide rail groove to realize the directional sliding and blind insertion splicing of components, reducing construction difficulty and reducing high-altitude operation time.

[0024] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0025] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0027] in: Figure 1 This is a side structural schematic diagram of a cadmium telluride photovoltaic building component according to this application; Figure 2 This is a top view of a cadmium telluride photovoltaic building component according to this application; Figure 3 This is a schematic diagram of the mating structure between the male conductive pin and the female conductive slot in this application; Figure 4 This is a schematic diagram of the top frame and the male conductive pin of this application; Figure 5 This is a schematic diagram of the bottom edge and the female conductive slot of this application; Figure 6 This is a schematic diagram illustrating the construction method of a cadmium telluride photovoltaic building component.

[0028] Explanation of reference numerals in the attached figures: 1-CdCdTellite glass assembly; 2-Mechatronic frame; 21-First side frame; 22-Second side frame; 23-Top frame; 24-Bottom frame; 3-Male conductive pin; 31-Conductive head; 4-Female conductive slot; 41-Guide flare; 5-EPDM waterproof sealing ring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0030] It should be understood that the phrase "an embodiment" or "this embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "an embodiment" or "this embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0031] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0032] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it have an "or" relationship.

[0033] In this article, the term "at least one" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, "at least one of A and B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0034] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0035] Example 1 This embodiment describes a cadmium telluride photovoltaic building component. Please refer to the appendix. Figure 1-3 ; Figure 1 This is a side structural schematic diagram of a cadmium telluride photovoltaic building component according to this application; Figure 2 This is a top view of a cadmium telluride photovoltaic building component according to this application; Figure 3 This is a schematic diagram of the mating structure between the male conductive pin and the female conductive slot in this application; This invention provides a cadmium telluride photovoltaic building component, comprising: Cadmium telluride glass assembly 1; The electromechanical integrated frame 2 surrounds and seals the edge of the cadmium telluride glass assembly 1; the outer side of the electromechanical integrated frame 2 is provided with an installation groove (not shown) for engaging with the building keel, which matches the slide rail groove on the keel; the electromechanical integrated frame 2 includes a first side frame 21, a second side frame 22, a top frame 23, and a bottom frame 24 that are spliced ​​together. The top frame 23 is provided with a male conductive pin 3, and the outer side wall of the bottom frame 24 is provided with a female conductive slot 4 that matches the male conductive pin 3. In the vertical direction, when two adjacent cadmium telluride photovoltaic building components are spliced ​​together, the female conductive slot 4 of the upper component and the male conductive pin 3 of the lower component are inserted and engaged to simultaneously achieve mechanical fixation and electrical conduction between adjacent components.

[0036] The technical advantages of this embodiment are as follows: By integrating the male conductive pin and the female conductive slot into the top and bottom of the electromechanical integrated frame, respectively, the mechanical fixing and electrical conduction can be completed simultaneously in one operation when adjacent components are vertically inserted, eliminating the need for separate wiring and connection, greatly simplifying the installation process and improving construction efficiency.

[0037] Example 2 Based on Example 1, a cadmium telluride photovoltaic building component is further described; please refer to the appendix. Figure 4-5 , Figure 4 This is a schematic diagram of the top frame and the male conductive pin of this application; Figure 5 This is a schematic diagram of the bottom edge and the female conductive slot of this application; Furthermore, the electromechanical integrated frame 2 has a hidden wiring groove inside, which is used to accommodate the lead wire of the cadmium telluride glass assembly 1. The positive terminal of the lead wire is electrically connected to the male conductive pin 3, and the negative terminal of the lead wire is electrically connected to the female conductive slot 4.

[0038] Furthermore, the concealed cable tray is opened along the entire length of the inside of the frame, with a rectangular or U-shaped cross-section. The lead wires are fixed at intervals in the tray using wire clamps or wire clips to prevent the cables from moving and wearing out during transportation and installation.

[0039] Furthermore, both the base of the male conductive pin 3 and the opening of the female conductive slot 4 are provided with EPDM waterproof sealing rings 5. When the two are inserted, the EPDM waterproof sealing rings 5 ​​are deformed under pressure to form a closed waterproof chamber.

[0040] Furthermore, the base of the male conductive pin 3 can also be provided with an annular sealing groove, and the EPDM waterproof sealing ring 5 is embedded in the annular sealing groove to prevent the sealing ring from falling off or shifting during insertion and removal. The EPDM waterproof sealing ring 5 at the opening of the female conductive slot 4 is embedded in the annular groove on the inner wall of the slot, forming a double sealing fit with the sealing ring at the male end in both the axial and radial directions.

[0041] Furthermore, a flexible polyurethane buffer layer is filled between the cadmium telluride glass assembly 1 and the electromechanical integrated frame 2, and the elastic modulus of the flexible polyurethane buffer layer is lower than that of the electromechanical integrated frame 2.

[0042] Furthermore, the back of the electromechanical integrated frame 2 is integrated with a heat insulation layer, which is solidified into an integral structure with the back of the electromechanical integrated frame 2 and the cadmium telluride glass assembly 1 through a foaming process.

[0043] Furthermore, the free end of the conductive head 31 can be selectively configured as either a guide cone surface or a guide fillet, and the opening of the female conductive slot 4 is provided with an outwardly expanding guide flare 41 to provide interlocking guidance during blind insertion.

[0044] Furthermore, the mounting groove has a dovetail-shaped cross-section to form a sliding guide fit with the slide rail groove in the vertical direction. The mounting groove extends along the entire length of the outer side of the frame, and the width of the dovetail-shaped groove opening is smaller than the width of the groove bottom. The cross-sectional shape of the slide rail groove matches the mounting groove. After the component is installed, the mounting groove and the slide rail groove interlock in the horizontal direction to prevent the component from tipping over and falling off.

[0045] Furthermore, the cadmium telluride glass assembly 1 is fixedly connected to the electromechanical integrated frame 2 by bolts or conventional clips. The inner wall of the frame is provided with an L-shaped support for supporting the glass assembly. After the glass assembly is placed on the support, a clamping force is applied from the outside or inside of the frame by bolts or clips to secure the glass assembly to the frame.

[0046] Furthermore, the male conductive pin 3 and the female conductive slot 4 are divided into multiple groups according to different connection polarities. By rotating the components 180 degrees during installation, series or parallel connection between adjacent components can be selectively achieved.

[0047] Technical effects of this embodiment: This embodiment, through the design of concealed wiring, EPDM waterproof sealing, polyurethane buffer layer, integrated insulation layer and guide structure, achieves built-in protection of electrical circuits and efficient waterproof sealing, while improving the shock absorption performance, insulation integration degree and blind insertion accuracy of the components.

[0048] Example 3 Based on Examples 1 and 2, this example describes a construction method for cadmium telluride photovoltaic building components. Please refer to the appendix. Figure 6 , Figure 6 A schematic diagram of a construction method for cadmium telluride photovoltaic building components; The method includes the following steps: Step S1, Construction of building keel: Install a supporting keel network on the building base; the supporting keel has a pre-set slide rail groove that matches the installation groove, and is leveled; Step S2, First row component installation: Slide the first row of cadmium telluride photovoltaic building components at the bottom layer into the mounting groove and fix them on the slide rail groove, and connect their output end to the main combiner box; Step S3, blind insertion splicing construction: slide the previous row of cadmium telluride photovoltaic building components into the slide rail through the installation groove, so that the female conductive slot 4 of its bottom frame 24 is aligned with the male conductive pin 3 of the top frame 23 of the next row of components and press down until the male conductive pin 3 and the female conductive slot 4 are engaged and locked, so as to simultaneously complete the mechanical fixing and electrical connection. Step S4: Repeat step S3 until all components are installed. Step S5, Edge Sealing and Testing: Insulate and seal the edges of the array with waterproof sealant, and perform overall system photoelectric performance and insulation withstand voltage tests.

[0049] Furthermore, after the splicing is completed in step S3, silicone sealant is injected into the splicing gaps of adjacent components so that the splice and the EPDM waterproof sealing ring 5 together form a double waterproof structure.

[0050] Furthermore, the insulating edge sealing process in step S5 includes: fastening an insulating protective cover onto the exposed male conductive pin 3 or female conductive slot 4 of the outermost component of the array, and filling all gaps between the cover and the frame with sealant.

[0051] The technical advantages of this embodiment are as follows: This embodiment achieves modular and rapid assembly by using directional installation of keel slide rails and blind plug splicing to complete mechanical and electrical connections in one step, as well as double waterproof sealing and insulation protection. This significantly reduces the difficulty and safety risks of high-altitude wiring operations and ensures the reliability and safety of the system in long-term operation.

[0052] The above description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. Various modifications and variations are possible with respect to the present invention. Any changes, modifications, substitutions, integrations, and parameter alterations to these embodiments within the spirit and principles of the present invention fall within the scope of protection of the claims of the present invention.

Claims

1. A cadmium telluride photovoltaic building component, characterized in that, include: Cadmium telluride glass assembly (1); The electromechanical integrated frame (2) surrounds and seals the edge of the cadmium telluride glass assembly (1); the outer side of the electromechanical integrated frame (2) is provided with an installation groove for engaging with the building keel (not shown, the installation groove matches the slide rail groove on the keel); the electromechanical integrated frame (2) includes a first side frame (21), a second side frame (22), a top frame (23), and a bottom frame (24) that are spliced ​​together. The top frame (23) is provided with a male conductive pin (3), and the outer side wall of the bottom frame (24) is provided with a female conductive slot (4) that matches the male conductive pin (3). In the vertical direction, when two adjacent cadmium telluride photovoltaic building components are spliced ​​together, the female conductive slot (4) of the upper component and the male conductive pin (3) of the lower component are inserted and engaged to simultaneously realize the mechanical fixation and electrical conduction between the adjacent components.

2. The cadmium telluride photovoltaic building component of claim 1, wherein, The electromechanical integrated frame (2) has a hidden wiring groove inside, which is used to accommodate the lead wire of the cadmium telluride glass assembly (1). The positive terminal of the lead wire is electrically connected to the male conductive pin (3), and the negative terminal of the lead wire is electrically connected to the female conductive slot (4).

3. The cadmium telluride photovoltaic building component of claim 1, wherein, Both the root of the male conductive pin (3) and the opening of the female conductive slot (4) are provided with EPDM waterproof sealing rings (5). When the two are inserted, the EPDM waterproof sealing rings (5) are deformed under pressure to form a closed waterproof chamber.

4. The cadmium telluride photovoltaic building component according to claim 1, characterized in that, A polyurethane flexible buffer layer is filled between the cadmium telluride glass assembly (1) and the electromechanical integrated frame (2), and the elastic modulus of the polyurethane flexible buffer layer is lower than that of the electromechanical integrated frame (2).

5. The cadmium telluride photovoltaic building component of claim 1, wherein, The back of the electromechanical integrated frame (2) is integrated with a heat insulation layer, which is solidified into an integral structure with the back of the electromechanical integrated frame (2) and the cadmium telluride glass assembly (1) through a foaming process.

6. The cadmium telluride photovoltaic building component of claim 1, wherein, The free end of the male conductive pin (3) is provided with a conductive head (31); The female conductive slot (4) has an outwardly expanding guide flare (41) at its opening to provide interlocking guidance during blind interlocking.

7. The cadmium telluride photovoltaic building component of claim 1, wherein, The mounting groove has a dovetail-shaped cross-section to form a sliding guide fit with the slide rail groove in the vertical direction.

8. A method of installing a cadmium telluride photovoltaic building component according to any one of claims 1 to 7, characterised in that, Includes the following steps: Step S1, Construction of building keel: Install a supporting keel network on the building base; the supporting keel has a pre-set slide rail groove that matches the installation groove, and is leveled; Step S2, First row component installation: Slide the first row of cadmium telluride photovoltaic building components at the bottom layer into the mounting groove and fix them on the slide rail groove, and connect their output end to the main combiner box; Step S3, blind insertion splicing construction: slide the previous row of cadmium telluride photovoltaic building components into the slide rail groove through the installation groove, so that the female conductive slot (4) of its bottom frame (24) is aligned with the male conductive pin (3) of the top frame (23) of the next row of components and press down until the male conductive pin (3) and the female conductive slot (4) are engaged and locked, so as to simultaneously complete the mechanical fixing and electrical connection; Step S4: Repeat step S3 until all components are installed. Step S5, Edge Sealing and Testing: Insulate and seal the edges of the array with waterproof sealant, and perform overall system photoelectric performance and insulation withstand voltage tests.

9. The construction method according to claim 8, characterized in that, After the splicing is completed in step S3, silicone sealant is injected into the splicing gap of adjacent components so that the splicing joint and the EPDM waterproof sealing ring (5) together form a double waterproof structure.

10. The construction method according to claim 8, characterized in that, The insulating edge sealing process in step S5 includes: fastening an insulating protective cover to the exposed male conductive pin (3) or female conductive slot (4) of the outermost component of the array, and filling all gaps between the cover and the frame with sealant.

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