Optimizer for photovoltaic module and photovoltaic module
By designing air sandwich and ventilation duct between the photovoltaic module optimizer and the photovoltaic panel, the problem of poor thermal dissipation performance of the photovoltaic module is solved, the failure rate is reduced, and the reliability and power generation efficiency of the photovoltaic module are improved.
Patent Information
- Application Number
- CN202422423218.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the photovoltaic module, the close fit of the optimizer and the photovoltaic panels leads to poor heat dissipation performance and difficult to release heat, resulting in high failure rate of photovoltaic modules and reduced power generation.
A photovoltaic module optimizer is designed, using an air interlayer between the shell structure and the photovoltaic panel, and a communication groove is set at the bottom of the shell structure to accommodate the center line box to form a ventilation duct and enhance heat dissipation performance.
Through the design of air mezzanine and ventilation duct, heat is effectively released, photovoltaic module failure rate is reduced, product reliability and power generation efficiency are improved.
Smart Images
Figure CN223157041U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of photovoltaic modules. Specifically, it relates to an optimizer for photovoltaic modules and a photovoltaic module. Background Art
[0002] A photovoltaic optimizer can control the working state of a module in real time, such as tracking the maximum power point of the module, cutting off the output of the photovoltaic module, etc. The photovoltaic optimizer is used in combination with a single module to solve the problem of reduced power generation of the photovoltaic system caused by shadow occlusion, component orientation differences, or inconsistent component attenuation. At the same time, it can also realize online monitoring and fast shutdown functions, making the photovoltaic system more efficient, safer, and more intelligent.
[0003] Generally, the optimizer is tightly bonded to the backlight surface of the photovoltaic panel. In the normal working state, both the photovoltaic module and the optimizer generate heat. Due to the large bonding surface, it is difficult to release the heat, so the heat dissipation performance is poor. This will not only reduce the working reliability of the optimizer, but also cause local hot spots on the photovoltaic module, leading to risks such as solder joint melting and adhesive film delamination, resulting in a high failure rate of the photovoltaic module and a reduction in the power generation of the photovoltaic module. Summary of the Utility Model
[0004] The purpose of this application is to provide an optimizer for photovoltaic modules and a photovoltaic module, which can enhance the heat dissipation performance, reduce the failure rate of the photovoltaic module, and effectively improve the reliability of the product.
[0005] The embodiments of this application are implemented as follows:
[0006] In a first aspect, an embodiment of this application provides an optimizer for a photovoltaic module, including a housing structure and an optimizer main body inside it. A cushion block is arranged at the bottom of the housing structure, and the cushion block is adapted to contact the surface of the photovoltaic panel, so as to form an air layer between the bottom surface of the housing structure and the surface of the photovoltaic panel. A communication groove is opened at the bottom of the housing structure, and the communication groove is adapted to accommodate the middle wire box on the back of the photovoltaic panel. The horizontal cross-sectional area of the communication groove is larger than the horizontal cross-sectional area of the middle wire box, and a ventilation duct is formed between the side walls of the communication groove and the middle wire box.
[0007] As an optional implementation manner, the communication groove penetrates from the bottom to the top of the optimizer and is located in the central area at the bottom and top.
[0008] As an optional implementation manner, a protection plate is arranged at the top of the housing structure, and ventilation holes are opened at the positions of the protection plate corresponding to the communication groove.
[0009] As an alternative embodiment, the projection of the housing structure on the horizontal plane is square, and an input end and an output end are connected to its side wall.
[0010] As an alternative embodiment, one set of opposite side walls of the housing structure are respectively provided with input ends, and an output end is provided on one of the other set of opposite side walls of the housing structure; the input ends and the output end are electrically connected to the optimizer main body.
[0011] As an alternative embodiment, a clamping structure is provided on the inner side wall of the communication groove, and the clamping structure is adapted to be clamped with the middle wire box.
[0012] As an alternative embodiment, an adhesive layer is provided on the bottom surface of the cushion block, which is adapted to be adhered to the photovoltaic module.
[0013] In a second aspect, an embodiment of the present application further provides a photovoltaic module, including a photovoltaic panel. A backlight surface of the photovoltaic panel is provided with two side wire boxes and a middle wire box located between the two side wire boxes; the photovoltaic module further includes an optimizer for the photovoltaic module as described above, and the communication groove of the optimizer sleeves the middle wire box.
[0014] As an alternative embodiment, a clamping structure is provided on the outer side of the middle wire box, and the clamping structure is adapted to be clamped with the inner side wall of the communication groove.
[0015] As an alternative embodiment, a wire box output end is provided on an outer side wall of the side wire box, and a lead-out direction of the wire box output end faces the middle wire box.
[0016] The beneficial effects of the present application include:
[0017] In a first aspect, the optimizer for a photovoltaic module provided by the present application includes a housing structure provided on the backlight surface of the photovoltaic panel; a cushion block is provided on a surface of the housing structure close to the photovoltaic panel, and the cushion block is located between the housing structure and the photovoltaic panel. In the embodiment of the present application, two sides of the cushion block are respectively connected to the housing structure and the photovoltaic panel, so that an air interlayer is formed between the housing structure and the photovoltaic panel. Through the formed air interlayer, heat corresponding to the photovoltaic panel and heat generated by the operation of the optimizer can be effectively released, preventing heat from accumulating between the photovoltaic panel and the optimizer, thereby avoiding the generation of hot spots on the photovoltaic panel, enabling the photovoltaic panel to operate reliably, and effectively reducing the failure rate of photovoltaic equipment. At the same time, a communication groove is provided on the housing structure, and a horizontal cross-sectional area of the communication groove is larger than a horizontal cross-sectional area of the photovoltaic middle wire box, and the communication groove is adapted to accommodate the middle wire box on the back of the photovoltaic panel. On the one hand, the provision of the communication groove can form a ventilation duct between the optimizer and the side wall of the middle wire box, ensuring the heat dissipation reliability between the optimizer and the side wall of the middle wire box and ensuring the use reliability of the optimizer and the middle wire box; on the other hand, when the optimizer is installed, it can be directly sleeved on the middle wire box on the back of the photovoltaic panel, making the installation of the optimizer more beautiful.
[0018] In a second aspect, a photovoltaic module includes a photovoltaic panel, and two side junction boxes and a middle junction box located between the two side junction boxes are provided on the backlight side of the photovoltaic panel. The present application further includes the optimizer for the photovoltaic module as described above, and the communication slot of the optimizer sleeves the middle junction box. An air sandwich layer for heat dissipation is provided between the optimizer provided in the embodiment of the present application and the photovoltaic panel. Compared with the prior art, the optimizer provided in the embodiment of the present application and the photovoltaic panel not only have a smaller contact surface, but also form an air sandwich layer, so that the optimizer and the photovoltaic panel can dissipate heat efficiently through air flow, reduce the failure rate of the photovoltaic module, effectively improve the reliability of the product, ensure that the photovoltaic equipment generates electricity normally for a long time, and thus guarantee a higher power generation amount. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0020] Figure 1 One of the structural schematic diagrams of the optimizer housing structure according to the embodiment of the present application;
[0021] Figure 2 Another structural schematic diagram of the optimizer housing structure according to the embodiment of the present application;
[0022] Figure 3 Another structural schematic diagram of the optimizer housing structure according to the embodiment of the present application;
[0023] Figure 4 Another structural schematic diagram of the optimizer housing structure according to the embodiment of the present application;
[0024] Figure 5 Another structural schematic diagram of the optimizer housing structure according to the embodiment of the present application;
[0025] Figure 6 The structural schematic diagram of the photovoltaic module according to the embodiment of the present application.
[0026] ICON:
[0027] 100 - housing structure; 101 - spacer; 102 - photovoltaic panel; 103 - air sandwich layer; 104 - communication slot; 105 - middle junction box; 106 - ventilation duct; 107 - protection plate; 108 - first clamping portion; 109 - second clamping portion; 110 - positive input port; 111 - negative input port; 112 - positive output port; 113 - negative output port. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Usually, the components of the embodiments of this application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application that is claimed, but merely represents selected embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.
[0030] A photovoltaic optimizer is used to modulate the output of a photovoltaic module to ensure that the photovoltaic panels operate at the maximum power point. It is one of the key devices in a photovoltaic power generation optimization system and has functions such as energy collection and conversion, data sampling, and basic communication. Usually, the optimizer is tightly adhered to the backlight surface of the photovoltaic panel. In the normal working state, both the photovoltaic module and the optimizer generate heat. Due to the large contact surface, it is difficult to release the heat, so the heat dissipation performance is poor. This not only causes a reduction in the working efficiency of the optimizer but also leads to local hot spots on the photovoltaic module. Seriously, it may even cause risks such as solder joint melting and adhesive film delamination, resulting in a relatively high failure rate of the photovoltaic module and a reduction in the power generation of the photovoltaic module.
[0031] To solve the above technical problems, the embodiments of this application provide an optimizer for a photovoltaic module and a photovoltaic module.
[0032] Refer to Figure 1 、 Figure 6 As shown, the optimizer for a photovoltaic module provided by the embodiments of this application includes a housing structure 100 and an optimizer main body inside it. A spacer 101 is provided at the bottom of the housing structure 100. The spacer 101 is adapted to contact the surface of the photovoltaic panel 102, so that an air layer 103 is formed between the bottom surface of the housing structure 100 and the surface of the photovoltaic panel 102. A communication groove 104 is opened at the bottom of the housing structure 100. The communication groove 104 is adapted to accommodate a midline box 105 on the back of the photovoltaic panel 102. The horizontal cross-sectional area of the communication groove 104 is larger than the horizontal cross-sectional area of the midline box 105, so that a ventilation duct 106 is formed between the side walls of the communication groove 104 and the midline box 105.
[0033] It should be noted that the spacer 101 in the embodiments of this application can be a block structure with good thermal conductivity, such as a metal material.
[0034] Among them, the spacer 101 determines the distance between the photovoltaic panel 102 and the optimizer housing structure 100, which can be selected by those skilled in the art according to needs and is not specifically limited herein. Exemplarily, the thickness of the air interlayer 103 is 5-20 mm.
[0035] Specifically, the optimizer provided in the embodiment of the present application includes a housing structure 100 disposed on the backlight surface of the photovoltaic panel 102; a spacer 101 is provided on the surface of the housing structure 100 close to the photovoltaic panel 102, and the spacer 101 is located between the housing structure 100 and the photovoltaic panel 102. In the embodiment of the present application, both sides of the spacer 101 are respectively connected to the housing structure 100 and the photovoltaic panel 102, so as to form an air interlayer 103 between the housing structure 100 and the photovoltaic panel 102. In the embodiment of the present application, the spacer 101 enables a reserved distance to be formed between the housing structure 100 and the photovoltaic panel 102, and the reserved distance can form an air layer. By forming the air layer, the embodiment of the present application can effectively release the heat corresponding to the photovoltaic panel 102 and the heat generated by the operation of the optimizer, prevent the heat from accumulating between the photovoltaic panel 102 and the optimizer, thereby avoiding the generation of hot spots on the photovoltaic panel 102, enabling the photovoltaic panel 102 to operate reliably, and effectively reducing the failure rate of the photovoltaic equipment.
[0036] Refer to Figure 2 As shown, a communication groove 104 is provided on the housing structure 100, the extending direction of the communication groove 104 intersects with the plane where the photovoltaic panel 102 is located, and the communication groove 104 communicates with the air interlayer 103.
[0037] Among them, the communication groove 104 is provided through the optimizer from the bottom to the top.
[0038] It should be noted that in the embodiment of the present application, the communication groove 104 is provided on the housing structure 100. Since the extending direction of the communication groove 104 intersects with the plane where the photovoltaic panel 102 is located, the communication groove 104 can be connected to the air interlayer 103. It should be noted that the communication groove 104 penetrates through the housing structure 100, so that the air on the surface of the housing structure 100 away from the photovoltaic panel 102 can enter and exit the air interlayer 103 through the communication groove 104. Through the above settings, the heat dissipation performance of the housing structure 100 in the embodiment of the present application is enhanced, the heat accumulation between the photovoltaic panel 102 and the optimizer is prevented, the optimizer and the photovoltaic panel 102 can dissipate heat efficiently through air flow, the failure rate of the photovoltaic module is reduced, and the reliability of the product is effectively improved.
[0039] More preferably, the communication groove 104 is located in the middle of the housing structure 100, and the extending direction of the communication groove 104 is perpendicular to the plane where the photovoltaic panel 102 is located.
[0040] It should be noted that in the embodiment of the present application, the communication groove 104 is arranged in the middle of the housing structure 100, so that the housing structure 100 forms a zigzag structure. Therefore, the middle part of the housing structure 100 can have a large contact surface with the external flowing air, so as to realize better heat dissipation for the optimizer and the photovoltaic panel 102.
[0041] Referring to Figure 3 、 Figure 4 As shown, a middle line box 105 of the photovoltaic module is arranged in the communication groove 104. The projected area of the middle line box 105 on the plane where the photovoltaic panel 102 is located is smaller than the projected area of the communication groove 104 on the plane where the photovoltaic panel 102 is located. A ventilation duct 106 is formed between the outer wall of the middle line box 105 and the inner wall of the communication groove 104.
[0042] Furthermore, in the embodiment of the present application, the middle line box 105 is arranged in the communication groove 104 in the housing structure 100.
[0043] It should be noted that the middle line box 105 does not completely cover the communication groove 104, that is to say, the horizontal cross-sectional area of the communication groove 104 is larger than the horizontal cross-sectional area of the middle line box 105, so that an air inlet and outlet channel, that is, the ventilation duct 106, can still be left when the middle line box 105 is embedded in the communication groove 104. The ventilation duct 106 in the embodiment of the present application can convey the air on the side of the optimizer away from the photovoltaic panel 102 to the backlight surface of the photovoltaic panel 102, so as to realize air-cooled heat dissipation on the backlight surface of the photovoltaic panel 102; in addition, it also ensures the heat dissipation between the side walls of the communication groove 104 and the middle line box 105, and ensures the use reliability of the optimizer and the middle line box.
[0044] Referring to Figure 5 As shown, as an optional implementation manner, a protection plate 107 is arranged on the top of the housing structure 100, and ventilation holes are opened at the positions of the protection plate 107 corresponding to the communication groove 104.
[0045] One end of the communication groove 104 away from the photovoltaic panel 102 is covered with a protection plate 107, and ventilation holes are evenly distributed on the protection plate 107. The ventilation holes are communicated with the air interlayer 103 through the ventilation duct 106.
[0046] Furthermore, in the embodiment of the present application, one end of the communication groove 104 away from the photovoltaic panel 102 is covered with a protection plate 107, and ventilation holes are evenly distributed on the protection plate 107. The protection plate 107 can protect the middle line box 105 and prevent foreign objects from entering the communication groove 104.
[0047] Among them, the distance between the surface of the middle line box 105 close to the photovoltaic panel 102 and the photovoltaic panel 102 is greater than or equal to the thickness of the air interlayer 103.
[0048] Furthermore, the projection of the housing structure 100 on the horizontal plane is square, with an input end and an output end connected to its side walls, and the communication slot 104 is opened at the middle position of the optimizer.
[0049] One set of opposite side walls of the housing structure 100 are respectively provided with input ends, and one of the opposite side walls of the other set of opposite side walls of the housing structure 100 is provided with an output end; the input end and the output end are electrically connected to the optimizer main body.
[0050] Specifically referring to Figure 6 As shown, the embodiment of the present application includes a positive input port 110, a negative input port 111, a positive output port 112, and a negative output port 113. The positive input port 110 and the negative input port 111 are used to connect to the output end of the photovoltaic module, and the positive output port 112 and the negative output port 113 are used to connect to an adjacent photovoltaic module or an external device.
[0051] It should be noted that the left and right positions of the positive input port 110, the negative input port 111, the positive output port 112, and the negative output port 113 are not limited and can be set according to the connection requirements of the photovoltaic module.
[0052] As an alternative embodiment, a clamping structure is provided on the inner side wall of the communication slot 104, and the clamping structure is adapted to be clamped with the middle line box 105.
[0053] It should be noted that the clamping structure can be provided on the side walls of the communication slot 104 and the middle line box 105. For example, referring to Figure 4 As shown, clamping components connected to the communication slot 104 are provided on both sides of the middle line box 105. The clamping components include a first clamping portion 108 provided on the middle line box 105 and a second clamping portion 109 provided in the communication slot 104; the first clamping portion 108 and the second clamping portion 109 are cooperatively clamped.
[0054] It should be noted that those skilled in the art can set the specific structures of the first clamping portion 108 and the second clamping portion 109 in the embodiment of the present application according to needs, and no special limitation is made thereto. The purpose is to enable the middle line box 105 and the communication slot 104 to be fixedly connected.
[0055] It should be noted that a clamping structure can also be provided on one inner wall of the communication slot 104 or the middle line box 105 to achieve the clamping and holding of the two, and those skilled in the art can set it according to needs.
[0056] As an alternative embodiment, both sides of the spacer 101 are respectively connected to the housing structure 100 and the photovoltaic panel 102 through an adhesive layer.
[0057] Further, in the embodiment of the present application, the housing structure 100 and the photovoltaic panel 102 are connected through an adhesive layer to realize the installation of the optimizer and the photovoltaic panel 102.
[0058] It should be noted that there are multiple spacers 101, which are spaced apart and distributed on the surface of the housing structure 100 close to the photovoltaic panel 102.
[0059] Referring to Figure 3 As shown, exemplarily, there are four spacers 101, and the four spacers 101 are respectively arranged at the four corners of the optimizer housing structure 100, so that the optimizer can be reliably installed.
[0060] A photovoltaic module provided by an embodiment of the present application includes a photovoltaic panel 102. Two side junction boxes and a middle junction box 105 located between the two side junction boxes are arranged on the backlight surface of the photovoltaic panel 102. The embodiment of the present application further includes the above-mentioned optimizer for the photovoltaic module, and the communication slot 104 of the optimizer is sleeved on the middle junction box 105.
[0061] A clamping structure is arranged on the outer side of the middle junction box 105, and the clamping structure is adapted to be clamped with the inner side wall of the communication slot 104.
[0062] It should be noted that the first clamping portion 108 on the outer side of the middle junction box 105 and the second clamping portion 109 in the communication slot 104 can be cooperatively clamped.
[0063] A wire box output terminal is arranged on the outer side wall of the side junction box, and the leading-out direction of the side junction box output terminal faces the middle junction box 105. When the optimizer is arranged at the middle junction box, since the leading-out direction of the side junction box output terminal faces the middle junction box 105, after the output terminal of the side junction box is led out, it can be directly electrically connected to the positive input port 110 and the negative input port 111 of the optimizer. The output terminal of the side junction box does not need to be bent, which shortens the connection distance as much as possible, makes the wire of the output terminal of the side junction box shorter, and the connection operation is convenient.
[0064] An air sandwich layer 103 for heat dissipation is arranged between the optimizer provided by the embodiment of the present application and the photovoltaic panel 102. Compared with the prior art, the optimizer provided by the embodiment of the present application and the photovoltaic panel 102 not only have a smaller contact surface, but also form an air sandwich layer 103, so that the optimizer and the photovoltaic panel 102 can dissipate heat efficiently through air flow, reduce the failure rate of the photovoltaic module, and effectively improve the reliability of the product. The embodiment of the present application can ensure that the photovoltaic device has a high power generation.
[0065] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An optimizer for a photovoltaic module, characterized in that, It includes a housing structure and an optimizer body inside it. A cushion block is provided at the bottom of the housing structure, and the cushion block is adapted to contact the surface of the photovoltaic panel, so that an air interlayer is formed between the bottom surface of the housing structure and the surface of the photovoltaic panel; a communication groove is formed in the bottom of the housing structure, and the communication groove is adapted to accommodate the midline box on the back of the photovoltaic panel. The horizontal cross-sectional area of the communication groove is larger than the horizontal cross-sectional area of the midline box, and a ventilation duct is formed between the communication groove and the side wall of the midline box.
2. The optimizer for a photovoltaic module according to claim 1, wherein, The communication groove runs through from the bottom to the top of the optimizer and is located in the central area at the bottom and the top.
3. The optimizer for a photovoltaic module according to claim 2, wherein, A protection plate is provided at the top of the housing structure, and ventilation holes are formed in the protection plate corresponding to the position of the communication groove.
4. The optimizer for a photovoltaic module according to claim 1, wherein The projection of the housing structure on the horizontal plane is square, and an input end and an output end are connected to its side wall.
5. The optimizer for a photovoltaic module according to claim 4, wherein One set of opposite side walls of the housing structure are respectively provided with input ends, and an output end is provided on one of the other set of opposite side walls of the housing structure; the input end and the output end are electrically connected to the optimizer body.
6. The optimizer for a photovoltaic module according to any one of claims 1 to 5, characterized in that, A clamping structure is provided on the inner side wall of the communication groove, and the clamping structure is adapted to be clamped with the midline box.
7. The optimizer for a photovoltaic module according to any one of claims 1 to 5, characterized in that An adhesive layer is provided on the bottom surface of the cushion block and is adapted to be adhered to the photovoltaic module.
8. A photovoltaic module, comprising a photovoltaic panel, wherein two side junction boxes and a middle junction box located between the two side junction boxes are arranged on the backlight side of the photovoltaic panel, and is characterized in that It further includes an optimizer for a photovoltaic module according to any one of claims 1 to 7, and the communication groove of the optimizer sleevs the midline box.
9. The photovoltaic module according to claim 8, wherein, A clamping structure is provided on the outer side of the midline box, and the clamping structure is adapted to be clamped with the inner side wall of the communication groove.
10. The photovoltaic module according to claim 8, characterized in that, A wire box output end is provided on the outer side wall of the side wire box, and the lead-out direction of the wire box output end faces the midline box.