Waterproof structure and photovoltaic device

Abstract

The application provides a waterproof structure and a photovoltaic device. The waterproof structure comprises a shell, a first waterproof film, a mounting plate and a second waterproof film. The shell is provided with a first window. The first waterproof film is arranged on the outer side of the shell and covers the first window. The mounting plate is connected to the inner side of the shell. The mounting plate is provided with a boss. The boss is provided with a second window. The second window is arranged at least partially overlapping the first window. The side of the boss facing the shell has a first surface. The first surface is provided with an adhesive. The adhesive is arranged around the second window. The second waterproof film is arranged on the side of the boss facing the shell and is connected to the adhesive. The second waterproof film covers the second window. The first waterproof film and the second waterproof film form a double-layer waterproof structure on the outer side and the inner side of the shell. In addition, the split structure between the second waterproof film and the mounting plate allows the materials of the mounting plate and the second waterproof film to be different, meeting different structural strength requirements and reducing problems such as falling off and damage of the waterproof film.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and more specifically, to waterproof structures and photovoltaic equipment. Background Technology

[0002] When existing inverters (such as photovoltaic inverters or energy storage inverters) are used in outdoor environments, their casings are equipped with displays for user convenience in operation and monitoring.

[0003] However, for inverters used outdoors, the existing protective film on the display screen is prone to damage, peeling, and aging due to prolonged exposure to wind and sun, which can cause external water to enter the inverter and cause electrical safety issues. Utility Model Content

[0004] This application provides a waterproof structure and photovoltaic equipment to solve the above-mentioned technical problems.

[0005] The embodiments of this application are implemented as follows: A waterproof structure includes a shell, a first waterproof membrane, a mounting plate, and a second waterproof membrane. The shell has a first window. The first waterproof membrane is disposed on the outer side of the shell and covers the first window. The mounting plate is connected to the inner side of the shell and has a boss. A second window is disposed on the boss, at least partially overlapping the first window. The boss has a first surface facing the shell, and an adhesive is disposed on the first surface, surrounding the second window. The second waterproof membrane is disposed on the side of the boss facing the shell and connected to the adhesive, covering the second window.

[0006] Thus, by placing a first waterproof membrane on the outside of the casing and a second waterproof membrane on the mounting plate inside the casing, a double-layer waterproof structure is formed. This seals the first and second windows that expose the display screen, improving the waterproof performance of photovoltaic equipment such as inverters when used outdoors and reducing safety issues caused by internal water ingress. Furthermore, the separate structure between the second waterproof membrane and the mounting plate allows for the use of different materials to meet varying structural strength requirements, reducing issues such as membrane detachment and damage. It also simplifies the assembly process between the second waterproof layer and the mounting plate.

[0007] In some embodiments: the housing has a recessed portion with a bottom wall, a first window is disposed on the bottom wall, the bottom wall includes a first plane and a second plane facing opposite to each other, the first plane facing the outside of the housing, the second plane facing the inside of the housing, a first waterproof membrane is disposed on the first plane, and a mounting plate is connected to the second plane. The second plane has a sealing groove, which surrounds to form a sealing area, the first window is located within the sealing area, and the mounting plate covers the sealing groove.

[0008] In some embodiments: the second plane further includes a positioning post, which is located on the side of the sealing groove away from the first window; the mounting plate is provided with positioning holes corresponding to the positioning posts; the waterproof structure also includes fasteners, which pass through the positioning holes and connect to the positioning posts.

[0009] In some embodiments, the thickness of the first waterproof membrane is less than the depth of the recess along the thickness direction of the shell.

[0010] In some implementations, the thickness of the first waterproof membrane is 0.3mm-0.8mm.

[0011] In some embodiments: through holes are also provided on the bottom wall, with the through holes spaced apart on the side of the first window, and the first waterproof membrane covers the through holes. The mounting plate is also provided with protrusions corresponding to the through holes, the protrusions being partially located in the through holes, and the protrusions being used to install buttons.

[0012] In some embodiments, a reinforcing structure is provided on the side of the mounting plate away from the second waterproof membrane, and the reinforcing structure is arranged around the second window and the protrusion.

[0013] In some implementations, a receiving groove is provided on the side of the boss away from the second waterproof membrane, and the receiving groove is used to install the display screen.

[0014] In some embodiments: the boss portion is located at the first window, and the first surface of the boss does not extend beyond the first window along the thickness direction of the housing.

[0015] The embodiments of this application also provide a photovoltaic device, including electronic components, a display screen, and the waterproof structure described in the above embodiments. The electronic components are disposed inside the housing of the waterproof structure and are electrically connected to the display screen. The display screen is mounted on the mounting plate of the waterproof structure, and a portion of the display screen is exposed through a second window on the mounting plate. A second waterproof membrane of the waterproof structure covers the display screen. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a photovoltaic device with a waterproof structure according to an embodiment of this application.

[0018] Figure 2 for Figure 1 The diagram shows a partial structural exploded view of the photovoltaic device.

[0019] Figure 3This is a schematic diagram of the mounting plate and the second waterproof membrane in one embodiment of a waterproof structure.

[0020] Figure 4 for Figure 3 The diagram shows the exploded structure.

[0021] Figure 5 This is a schematic diagram of the waterproof structure in one embodiment.

[0022] Figure 6 for Figure 5 The exploded structural diagram of the waterproof structure shown.

[0023] Figure 7 for Figure 5 The diagram shows the waterproof structure in another direction.

[0024] Figure 8 for Figure 7 The exploded structural diagram of the waterproof structure shown.

[0025] Explanation of key component symbols: Waterproof structure 100 Casing 10 First shell 11 Second shell 12 Recess 13 Bottom wall 131 First plane 1311 Second plane 1312 Sealing groove 132 Positioning post 133 First Window 14 Through hole 15 First waterproof membrane 20 Mounting plate 30 31 convex Positioning hole 32 Protrusion 33 First surface 311 Containment slot 312 Adhesive component 34 Second window 35 Second waterproof membrane 40 Fastener 50 Strengthening structure 60 Photovoltaic equipment 200 Electronic Components 201 Display screen 202 The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0026] The technical solutions in 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, and not all embodiments.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] See Figures 1 to 8 This embodiment provides a waterproof structure 100, including a housing 10, a first waterproof membrane 20, a mounting plate 30, and a second waterproof membrane 40. The housing 10 has a first window 14. The first waterproof membrane 20 is disposed on the outer side of the housing 10 and covers the first window 14. The mounting plate 30 is connected to the inner side of the housing 10, and has a boss 31 on it. The boss 31 has a second window 35, which at least partially overlaps with the first window 14. The boss 31 has a first surface 311 on the side facing the housing 10, and an adhesive 34 is disposed on the first surface 311, surrounding the second window 35. The second waterproof membrane 40 is disposed on the side of the boss 31 facing the housing 10 and connected to the adhesive 34, covering the second window 35. The display screen 202 in the photovoltaic device 200 can be disposed on the side of the mounting plate 30 away from the first waterproof membrane 20, partially exposing the second window 35.

[0031] Thus, by providing a first waterproof membrane 20 on the outside of the housing 10 and a second waterproof membrane 40 on the mounting plate 30 inside the housing 10, a double-layer waterproof structure 100 is formed, sealing the first window 14 and the second window 35 for exposing the display screen 202, improving the waterproof performance of the photovoltaic equipment 200 when used outdoors, and reducing safety issues caused by internal water ingress. Furthermore, the separate structure between the second waterproof membrane 40 and the mounting plate 30 allows for different materials to be used to meet varying structural strength requirements, and also simplifies the assembly process between the second waterproof layer and the mounting plate 30.

[0032] In some implementations, such as Figure 1 and Figure 2 As shown, the housing 10 includes a first housing 11 and a second housing 12, which are sealed together, forming a receiving cavity. A first window 14 is disposed on the first housing 11 and extends through it, serving to display the display area of ​​the display screen 202. A first waterproof membrane 20 is attached to the outer surface of the first housing 11, covering and sealing the first window 14. A mounting plate 30 is connected to the inner side of the first housing 11, and a second waterproof membrane 40 is disposed on the side of the mounting plate 30 facing the first housing 11. The second waterproof membrane 40 covers the second window 35 and seals the edge area of ​​the second window 35 with an adhesive 34, reducing water leakage.

[0033] In some implementations, such as Figures 1 to 8 As shown, the housing 10 has a recess 13, specifically, the recess 13 is provided on the first housing 11. The recess 13 has a bottom wall 131, and a first window 14 is provided on the bottom wall 131 and extends through the bottom wall 131. The bottom wall 131 includes a first plane 1311 and a second plane 1312 facing each other. The first plane 1311 faces the outside of the housing 10, and the second plane 1312 faces the inside of the housing 10. A first waterproof membrane 20 is provided on the first plane 1311 and covers the first window 14. A mounting plate 30 is connected to the second plane 1312 to position the relative positions of the first window 14 and the second window 35, thereby positioning the relative positions of the first waterproof membrane 20 and the second waterproof membrane 40, reducing the problem that the display area of ​​the display screen 202 cannot be fully displayed in the first window 14 due to the loosening and misalignment of the mounting plate 30.

[0034] In some embodiments, an adhesive layer 21 may be provided on the side of the first waterproof membrane 20 facing the first plane 1311 to seal the connection between the first waterproof membrane 20 and the first plane 1311, forming an external waterproof structure 100 on the outside of the first housing 11 and reducing the problem of water leakage from the first window 14. The area of ​​the first waterproof membrane 20 may also be approximately the same as that of the first plane 1311, which helps to increase the sealing connection area between the first waterproof membrane 20 and the first plane 1311, improve the connection reliability, and further reduce the risk of water leakage.

[0035] In some embodiments, the thickness of the first waterproof membrane 20 is less than the depth of the recess 13 along the thickness direction of the housing 10. Thus, after the first waterproof membrane 20 is attached to the first plane 1311, it is contained within the recess 13, and the outer surface of the first waterproof membrane 20 does not protrude from the recess 13. This helps reduce the risk of the first waterproof membrane 20 being scratched by the external environment during the use of the photovoltaic equipment 200, lowering the risk of the first waterproof membrane 20 falling off or being damaged, thereby improving waterproof performance.

[0036] In some embodiments, the thickness of the first waterproof membrane 20 is 0.3mm-0.8mm. Under this thickness, the elasticity and light transmittance of the first waterproof membrane 20 are better, and it does not affect the viewing of the display content and touch operation of the display screen 202. In some embodiments, the thickness of the first waterproof membrane 20 is preferably 0.5mm. In other embodiments, the thickness of the first waterproof membrane 20 can also be any value or any range of 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm and 0.8mm, as long as it meets the design requirements, and this application is not limited to this.

[0037] In some embodiments, the thickness of the second waterproof membrane 40 may also be 0.3mm-0.8mm. The thickness of the second waterproof membrane 40 may be the same as or different from that of the first waterproof membrane 20. This application is not limited thereto.

[0038] In some embodiments, the materials of the first waterproof membrane 20 and the second waterproof membrane 40 may be, but are not limited to, polycarbonate (PC) materials, which have good impact resistance, heat resistance, transparency, etc., and moderate hardness, good compatibility, and can be well bonded to the housing 10 and the mounting plate 30.

[0039] In some embodiments, the second plane 1312 is further provided with a sealing groove 132, such as Figure 7 and Figure 8As shown, the sealing groove 132 surrounds and forms a sealing area, with the first window 14 located within the sealing area. The mounting plate 30 covers the sealing groove 132. The sealing groove 132 can be filled with a density-enhancing material, including but not limited to sealant, sealing rings, and rubber components. When the mounting plate 30 connects to the second plane 1312 and covers the sealing groove 132, the sealing material is pressed between the mounting plate 30 and the second plane 1312 to achieve a sealed connection between them, sealing the gaps between the mounting plate 30, the second plane 1312, and the first window 14, further improving waterproofing performance.

[0040] Please refer to it again. Figure 7 and Figure 8 In some embodiments, the second plane 1312 also includes a positioning post 133, which is located on the side of the sealing groove 132 away from the first window 14, i.e., the positioning post 133 is located on the outside of the sealing area. The mounting plate 30 is provided with a positioning hole 32 corresponding to the positioning post 133. The waterproof structure 100 also includes a fastener 50, which passes through the positioning hole 32 and connects to the positioning post 133 to achieve locking and positioning between the mounting plate 30 and the housing 10. The fastener 50 includes, but is not limited to, screws, bolts, etc., which connect to the positioning post 133 by means of threaded engagement. During the locking process of the fastener 50, it can assist the mounting plate 30 in pressing the sealing element to form an internal waterproof structure 100 on the inner side of the first housing 11. The connection between the mounting plate 30 and the housing 10 is achieved through the fastener 50, which also facilitates subsequent inspection and replacement of parts and reduces maintenance costs.

[0041] In some embodiments, the number of positioning posts 133 and positioning holes 32 are four in total, symmetrically distributed on the second plane 1312 and the mounting plate 30, and evenly distributed on the outer side of the sealing area. This helps to balance the force between the mounting plate 30 and the bottom wall 131, allowing the mounting plate 30 to evenly press the sealing element, thereby improving the sealing effect. In other embodiments, the number of positioning posts 133 and positioning holes 32 may be more or less than four, and this application is not limited to this.

[0042] In some embodiments, an adhesive layer may be provided on the side surface of the mounting plate 30 facing the bottom wall 131 to seal and bond the second plane 1312, thereby forming a double-sealed connection between the mounting plate 30 and the bottom wall 131 through mechanical locking and adhesive bonding, further improving the sealing effect between the mounting plate 30 and the housing 10 and reducing the risk of water leakage.

[0043] In some embodiments, the bottom wall 131 is further provided with through holes 15, which are spaced apart on the sides of the first window 14, and the first waterproof membrane 20 covers the through holes 15. The mounting plate 30 is also provided with protrusions 33 corresponding to the through holes 15, which are partially disposed in the through holes 15 and are used to install buttons. In some embodiments, the protrusions 33 can be elastic or flexible structures, which facilitates the user to press the protrusions 33 from the outside of the first waterproof membrane 20. The protrusions 33 can also be hollow structures to accommodate buttons and other accessories. In some embodiments, there can be multiple through holes 15, which can be spaced apart on one side of the first window 14 or spaced apart on multiple sides of the first window 14 according to different needs. This application is not limited to this. The number and position of the protrusions 33 correspond to the through holes 15, and each protrusion 33 is partially disposed in a through hole 15. In this way, it is convenient for the user to distinguish different buttons from the outside of the first waterproof membrane 20, reducing the problem of accidental touch. In some embodiments, the shapes and sizes of the plurality of through holes 15 may be the same or different, and the shapes and sizes of the plurality of protrusions 33 are also configured to correspond to the plurality of through holes 15 to meet the size requirements of different buttons.

[0044] In some embodiments, the mounting plate 30 is further provided with a reinforcing structure 60 on the side facing away from the second waterproof membrane 40. The reinforcing structure 60 may be, but is not limited to, a reinforcing rib or similar structure. The reinforcing structure 60 is provided around the second window 35 and the protrusion 33. The reinforcing structure 60 protrudes from the surface of the mounting plate 30 and can be integrally formed with the mounting plate 30, which helps to improve the structural strength of the mounting plate 30 and allows the back of the mounting plate 30 to stably mount and support circuit boards and other components.

[0045] In some embodiments, the positioning hole 32 may also be partially formed on the reinforcing structure 60, so that the positioning hole 32 passes through the reinforcing structure 60 and the mounting plate 30. In this way, when the fastener 50 is assembled into the positioning hole 32, the end of the fastener 50 away from the positioning post 133 can cooperate with the reinforcing structure 60, thereby improving the connection reliability between the mounting plate 30 and the housing 10.

[0046] Please refer to it again. Figures 1 to 8 In some embodiments, a receiving groove 312 is provided on the side of the boss 31 facing away from the second waterproof membrane 40. The receiving groove 312 is used to install the display screen 202. In this way, the installation position of the display screen 202 on the mounting plate 30 can be positioned, reducing problems such as shaking or falling off the display screen 202.

[0047] In some embodiments, the boss 31 is partially disposed in the first window 14, and the first surface 311 of the boss 31 does not extend beyond the first window 14 along the thickness direction of the housing 10. Specifically, the length, width, and other dimensions of the boss 31 are correspondingly set to the first window 14. Along the thickness direction of the housing 10, the boss 31 can be at least partially embedded in the first window 14, which is beneficial for positioning the mounting plate 30 and the housing 10, facilitating subsequent operations such as screwing, and also allows the mounting plate 30 to be as close as possible to the second plane 1312, improving the sealing performance of the inner side of the first housing 11. Furthermore, the fact that the first surface 311 of the boss 31 does not extend beyond the first window 14 can reduce the impact of the boss 31 on the first waterproof membrane 20, maintain the flatness of the outer surface of the first waterproof membrane 20, and reduce the risk of the first waterproof membrane 20 bulging or falling off.

[0048] Please refer to it again. Figure 1 and Figure 2 This application also provides a photovoltaic device 200, which may be, but is not limited to, a photovoltaic inverter or an energy storage inverter. The photovoltaic device 200 includes an electronic component 201, a display screen 202, and the waterproof structure 100 described in the above embodiments. The electronic component 201 is disposed within the housing 10 of the waterproof structure 100 and is electrically connected to the display screen 202. The display screen 202 is mounted on the mounting plate 30 of the waterproof structure 100, and a portion of the display screen 202 is exposed through a second window 35 on the mounting plate 30. A second waterproof membrane 40 of the waterproof structure 100 covers the display screen 202.

[0049] The waterproof structure 100 and photovoltaic device 200 of this application form a double-layer waterproof structure 100 by providing a first waterproof membrane 20 on the outside of the housing 10 and a second waterproof membrane 40 on the mounting plate 30 inside the housing 10. This seals the first window 14 and the second window 35 that expose the display screen 202, improving the waterproof performance of the photovoltaic device 200 when used outdoors and reducing safety issues caused by internal water ingress. Furthermore, the separate structure between the second waterproof membrane 40 and the mounting plate 30 allows for different materials to be used to meet different structural strength requirements and simplifies the assembly process between the second waterproof layer and the mounting plate 30.

[0050] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A waterproof structure, characterized in that, include: The casing has a first window. A first waterproof membrane is disposed on the outside of the housing and covers the first window; A mounting plate is connected to the inner side of the housing. The mounting plate has a boss and a second window on the boss. The second window at least partially overlaps with the first window. The side of the boss facing the housing has a first surface. The first surface has an adhesive component, which is arranged around the second window. A second waterproof membrane is disposed on the side of the protrusion facing the housing and connected to the adhesive, the second waterproof membrane covering the second window.

2. The waterproof structure according to claim 1, characterized in that: The housing has a recessed portion with a bottom wall. The first window is located on the bottom wall. The bottom wall includes a first plane and a second plane facing opposite each other. The first plane faces the outside of the housing, and the second plane faces the inside of the housing. The first waterproof membrane is located on the first plane, and the mounting plate is connected to the second plane. The second plane is provided with a sealing groove, which surrounds and forms a sealing area. The first window is located within the sealing area, and the mounting plate covers the sealing groove.

3. The waterproof structure according to claim 2, characterized in that: The second plane also includes a positioning post, which is located on the side of the sealing groove away from the first window; the mounting plate is provided with positioning holes corresponding to the positioning post; The waterproof structure also includes fasteners that pass through the positioning hole and connect to the positioning post.

4. The waterproof structure according to claim 2, characterized in that: Along the thickness direction of the shell, the thickness of the first waterproof membrane is less than the depth of the recess.

5. The waterproof structure according to claim 4, characterized in that: The thickness of the first waterproof membrane is 0.3mm-0.8mm.

6. The waterproof structure according to claim 2, characterized in that: The bottom wall is also provided with through holes, which are spaced apart on the side of the first window, and the first waterproof membrane covers the through holes; The mounting plate is also provided with a protrusion corresponding to the through hole, the protrusion being partially located in the through hole and used to install a button.

7. The waterproof structure according to claim 6, characterized in that: The mounting plate is further provided with a reinforcing structure on the side opposite to the second waterproof membrane, and the reinforcing structure is arranged around the second window and the protrusion.

8. The waterproof structure according to claim 1, characterized in that: The boss has a receiving groove on the side opposite to the second waterproof membrane, and the receiving groove is used to install the display screen.

9. The waterproof structure according to claim 1, characterized in that: The boss portion is located at the first window, and along the thickness direction of the housing, the first surface of the boss does not extend beyond the first window.

10. A photovoltaic device, characterized in that, The device includes electronic components, a display screen, and a waterproof structure as described in any one of claims 1-9, wherein the electronic components are disposed within the housing of the waterproof structure, the electronic components are electrically connected to the display screen, the display screen is mounted on a mounting plate of the waterproof structure, and the display screen partially exposes a second window on the mounting plate, and a second waterproof membrane of the waterproof structure covers the display screen.

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