A marine heterojunction photovoltaic module

Abstract

The utility model discloses a kind of offshore heterojunction photovoltaic modules, including the battery assembly and frame assembly being connected with each other, rectangular sealing element is provided on battery assembly, sealing element has U-shaped vertical section, and the four peripheral edges of battery assembly are all matched with the U-shaped opening of sealing element and are inserted, frame assembly includes rectangular upper frame and rectangular lower frame, upper frame is slidably matched with lower frame along the thickness direction of battery assembly, and sealing element is clamped from both sides respectively, and upper frame and lower frame are provided with elastic member between them. The utility model sealing element is circumferentially arranged on the four peripheral edges of battery assembly, and sealing element is compressed by upper frame and lower frame, so as to realize the sealing effect of battery assembly, reduce the probability of battery assembly water seepage, so as to reduce the failure rate of battery assembly.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic module technology, and in particular relates to a marine heterojunction photovoltaic module. Background Technology

[0002] Heterojunction photovoltaic modules are a type of high-efficiency solar photovoltaic module that uses heterojunction cell technology and has strong competitiveness in the photovoltaic market.

[0003] Marine environments are characterized by high humidity, high salinity, and high corrosivity. If existing heterojunction photovoltaic modules installed at sea are not properly sealed, moisture can enter the photovoltaic modules, causing corrosion to the internal components. In severe cases, this can even lead to internal short circuits, significantly shortening the lifespan of the photovoltaic modules.

[0004] Therefore, improving the sealing performance of offshore heterojunction photovoltaic modules remains a problem to be solved. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a marine heterojunction photovoltaic module that extends the service life of the photovoltaic module.

[0006] To achieve the above objectives, the specific technical solution of the marine heterojunction photovoltaic module of this utility model is as follows: A marine heterojunction photovoltaic module includes interconnected battery modules and frame modules. The battery modules are provided with rectangular seals. The seals have a U-shaped vertical cross section, and the four edges of the battery modules are all inserted into the U-shaped openings of the seals. The frame assembly includes a rectangular upper frame and a rectangular lower frame. The upper frame slides along the thickness direction of the battery assembly with the lower frame and clamps the sealing member from both sides. An elastic member is provided between the upper frame and the lower frame.

[0007] Preferably, the lower frame includes a rectangular bottom beam, and a rectangular connecting frame is provided circumferentially on the top surface of the bottom beam. The bottom surface of the seal is in contact with the top surface of the bottom beam, and the outer circumferential surface of the seal is in contact with the inner circumferential surface of the connecting frame.

[0008] Preferably, the upper frame has an L-shaped cross-section, with its transverse wall fitting against the top surface of the seal and its longitudinal wall slidingly engaging with the outer peripheral surface of the connecting frame.

[0009] Preferably, the elastic element is a tension spring, and the two ends of the tension spring are detachably connected to the longitudinal wall and the bottom beam, respectively.

[0010] Preferably, the width of the transverse wall is greater than the width of the side wall of the seal located on the front side of the battery assembly.

[0011] Preferably, the inner circumferential surface of the seal is provided with a chamfered surface, which is located on the front side of the battery assembly.

[0012] Preferably, a drainage groove is provided on the transverse wall, and the drainage groove is arranged opposite to the chamfered surface along the thickness direction of the battery assembly.

[0013] Preferably, the outer periphery of the longitudinal wall is provided with an outer edge portion, and a reinforcing rib is provided between the longitudinal wall and the transverse wall.

[0014] Preferably, the longitudinal wall and the opposite sides of the connecting frame are provided with a lubricating layer.

[0015] Preferably, hooks are provided at both ends of the tension spring, and hanging rings for threading the hooks are provided on the outer edge and the bottom beam.

[0016] The marine heterojunction photovoltaic module of this invention has the following advantages: the sealing element is circumferentially arranged on the four edges of the battery module. The upper and lower frame frames press the sealing element together, thereby achieving a sealing effect on the battery module, reducing the probability of water leakage and thus reducing the failure rate of the battery module; and through the elasticity of the elastic element, the upper and lower frame frames always maintain a certain clamping force on the sealing element, so that when temperature changes cause thermal expansion and contraction of the battery module and the sealing element, the sealing element and the battery module can always remain in a close fit, thereby maintaining a good seal on the battery module and extending the service life of the photovoltaic module. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the photovoltaic module of this utility model; Figure 2 This is an exploded view of the photovoltaic module of this utility model; Figure 3 This is a cross-sectional view of the photovoltaic module of this utility model; Figure 4 This is a schematic diagram of the upper frame of this utility model; Figure 5 This is a schematic diagram of the structure of the lower frame of this utility model; Figure 6 This is a schematic diagram of the sealing element of this utility model; The markings in the diagram are as follows: 1. Battery assembly; 2. Top frame; 3. Bottom frame; 4. Seal; 5. Elastic element; 201. Horizontal wall; 202. Drainage groove; 203. Reinforcing rib; 204. Outer edge; 205. Longitudinal wall; 301. Bottom beam; 302. Connecting frame; 401. Longitudinal wall. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the photovoltaic module and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figure 1-3 As shown, a marine heterojunction photovoltaic module includes a battery module 1 and a frame module connected to each other. The battery module 1 is provided with a rectangular sealing member 4, which has a U-shaped vertical cross section, and the four edges of the battery module 1 are all inserted into the U-shaped opening of the sealing member 4. The frame module includes a rectangular upper frame 2 and a rectangular lower frame 3. The upper frame 2 slides along the thickness direction of the battery module 1 and is in contact with the lower frame 3, and clamps the sealing member 4 from both sides. An elastic member 5 is provided between the upper frame 2 and the lower frame 3.

[0021] The aforementioned photovoltaic module possesses excellent sealing performance, making it suitable for offshore deployment. The module comprises a cell assembly, EVA film, and tempered glass on both sides, which are hot-pressed to form the module. The sealing element 4, made of fluororubber or silicone rubber, wraps around the edges of the module 1. The upper frame 2 and lower frame 3 then press the sealing element 4 against the upper and lower surfaces of the module 1 from both sides. Silicone structural adhesive can be applied to the contact surface between the sealing element 4 and the module 1 to enhance sealing performance. This effectively seals the module 1, reducing the likelihood of moisture seeping into the module 1. Furthermore, the elasticity of the elastic element 5 provides additional sealing to the upper frame 2 and lower frame 3. The lower frame 3 applies an opposing tensile force, thereby applying a continuous and stable clamping force to the seal 4. When the battery module 1 and the seal 4 expand and contract due to temperature changes, the clamping force can maintain a tight fit between the seal 4 and the battery module 1, preventing cracking, thereby improving the sealing performance of the photovoltaic module and extending its service life in the marine environment. The seal 4, the upper frame 2, and the lower frame 3 are all continuous integrated frame structures, so that there are no splicing gaps in the seal 4, which enhances the sealing effect of the seal 4 on the battery module 1. The integrated upper frame 2 and lower frame 3 can improve their own structural strength, thereby improving the overall strength of the photovoltaic module.

[0022] Further improvements include, for example Figure 4 and 5As shown, the lower frame 3 includes a rectangular bottom beam 301, and a rectangular connecting frame 302 is provided on the top surface of the bottom beam 301. The bottom surface of the seal 4 is in contact with the top surface of the bottom beam 301, and the outer peripheral surface of the seal 4 is in contact with the inner peripheral surface of the connecting frame 302. The upper frame 2 has an L-shaped cross section, and its transverse wall 201 is in contact with the top surface of the seal 4, and its longitudinal wall 205 is in sliding contact with the outer peripheral surface of the connecting frame 302.

[0023] The bottom beam 301 is a hollow square tube structure designed for lightweight construction, which plays a major supporting role for the photovoltaic module. The connecting frame 302 on it and the bottom surface of the bottom beam 301 are used to limit the connection structure of the seal 4 and the battery module 1 from the bottom and the outer periphery, respectively. The transverse wall 201 limits the connection structure of the seal 4 and the battery module 1 from above, thereby improving the installation firmness of the battery module 1 and pressing the battery module 1 and the seal 4 together to achieve a tight fit and a long-term reliable sealing effect. The longitudinal wall 205 limits the connection between the connecting frame 302 to achieve the mutual positioning between the upper frame 2 and the lower frame 3, and guides the movement of the upper frame 2. This can improve the structural strength and sealing effect of the photovoltaic module.

[0024] Further improvements include, for example Figure 3 As shown, the elastic component 5 is a tension spring, with both ends detachably connected to the longitudinal wall 205 and the bottom beam 301, respectively. Specifically, both ends of the tension spring are equipped with hooks, and the outer edge 204 and the bottom beam 301 are equipped with hanging rings for threading the hooks. The tension spring can be made of stainless steel with a rubber layer on its surface to improve its corrosion resistance and provide stable elasticity. The design of the hooks and hanging rings improves the ease of assembling and disassembling the elastic component 5, thereby improving the ease of assembling and disassembling the upper frame 2 and the lower frame 3, and ultimately enhancing the ease of maintenance of the photovoltaic module.

[0025] Further improvements include, for example Figure 3 As shown, the width of the transverse wall 201 is greater than the width of the side wall of the seal 4 on the front of the battery module 1. The transverse wall 201 is designed to completely cover the seal 4, thereby blocking sunlight, reducing ultraviolet radiation to the seal 4, slowing down the aging of the seal 4, and extending the service life of the photovoltaic module.

[0026] Further improvements include, for example Figure 6As shown, the inner circumferential surface of the seal 4 is provided with a chamfered surface 401, which is located on the front side of the battery assembly 1. The chamfered surface 401 is connected to the front side of the battery assembly 1, eliminating the step caused by the height difference between the top surface of the seal 4 and the front side of the battery assembly 1. This allows water accumulated on the surface of the battery assembly 1 to drain smoothly when the battery assembly is installed at an angle, reducing water accumulation, thereby mitigating corrosion of the seal 4, extending the service life of the seal 4, and improving its sealing effect.

[0027] Further improvements include, for example Figure 4 As shown, a drainage groove 202 is provided on the transverse wall 201, and the drainage groove 202 is positioned opposite the chamfered surface 401 along the thickness direction of the battery assembly 1. The drainage groove 202 can drain the water accumulated between the transverse wall 201 and the battery assembly 1, thereby further reducing the corrosion of the seal 4, further extending the service life of the seal 4, and improving its sealing effect.

[0028] Further improvements include, for example Figure 4 As shown, an outer edge portion 204 is provided circumferentially on the outer periphery of the longitudinal wall 205, and a reinforcing rib 203 is provided between the longitudinal wall 205 and the transverse wall 201. The outer edge portion 204 and the reinforcing rib 203 can improve the structural strength of the upper frame 2, and ultimately improve the overall strength of the photovoltaic module, so that the photovoltaic module can better resist the impact of wind and waves.

[0029] A further improvement is that a lubrication layer is provided on the opposite sides of the longitudinal wall 205 and the connecting frame 302. The lubrication layer is a polytetrafluoroethylene layer. The lubrication layer can reduce the coefficient of friction between the longitudinal wall 205 and the connecting frame 302, making the movement of the upper frame 2 smoother. This allows the upper frame 2 and the lower frame 3 to always maintain a stable clamping force on the seal 4, so as to maintain the long-term stable sealing effect of the seal 4.

[0030] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A marine heterojunction photovoltaic module, comprising interconnected cell modules (1) and frame modules, characterized in that: The battery assembly (1) is provided with a rectangular seal (4), the seal (4) has a U-shaped vertical cross section, and the four edges of the battery assembly (1) are all inserted into the U-shaped opening of the seal (4). The frame assembly includes a rectangular upper frame (2) and a rectangular lower frame (3). The upper frame (2) slides along the thickness direction of the battery assembly (1) and engages with the lower frame (3), and clamps the sealing member (4) from both sides. An elastic member (5) is provided between the upper frame (2) and the lower frame (3).

2. The marine heterojunction photovoltaic module according to claim 1, characterized in that, The lower frame (3) includes a rectangular bottom beam (301), and a rectangular connecting frame (302) is provided on the top surface of the bottom beam (301). The bottom surface of the sealing element (4) is in contact with the top surface of the bottom beam (301), and the outer peripheral surface of the sealing element (4) is in contact with the inner peripheral surface of the connecting frame (302).

3. The marine heterojunction photovoltaic module according to claim 2, characterized in that, The upper frame (2) has an L-shaped cross section, its transverse wall (201) is in contact with the top surface of the seal (4), and its longitudinal wall (205) is in sliding fit with the outer peripheral surface of the connecting frame (302).

4. The marine heterojunction photovoltaic module according to claim 3, characterized in that, The elastic element (5) is a tension spring, and the two ends of the tension spring are detachably connected to the longitudinal wall (205) and the bottom beam (301), respectively.

5. The marine heterojunction photovoltaic module according to claim 3, characterized in that, The width of the transverse wall (201) is greater than the width of the side wall of the seal (4) located on the front of the battery assembly (1).

6. The marine heterojunction photovoltaic module according to claim 5, characterized in that, The inner circumferential surface of the seal (4) is provided with a chamfered surface (401) in the circumferential direction, and the chamfered surface (401) is located on the front side of the battery assembly (1).

7. The marine heterojunction photovoltaic module according to claim 6, characterized in that, A drainage groove (202) is provided on the transverse wall (201), and the drainage groove (202) is arranged opposite to the chamfered surface (401) along the thickness direction of the battery assembly (1).

8. The marine heterojunction photovoltaic module according to claim 4, characterized in that, The outer periphery of the longitudinal wall (205) is provided with an outer edge (204), and a reinforcing rib (203) is provided between the longitudinal wall (205) and the transverse wall (201).

9. The marine heterojunction photovoltaic module according to claim 3, characterized in that, The longitudinal wall (205) and the connecting frame (302) are provided with a lubricating layer on their opposite sides.

10. The marine heterojunction photovoltaic module according to claim 8, characterized in that, Both ends of the tension spring are provided with hooks, and the outer edge (204) and the bottom beam (301) are provided with hanging rings for threading the hooks.

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