Photovoltaic optimizer and photovoltaic system

Abstract

The embodiment of the utility model provides a photovoltaic optimizer and a photovoltaic system, and the photovoltaic optimizer comprises a housing assembly which is internally provided with an accommodation cavity and is provided with a wire passing hole communicated with the outside; the circuit board is arranged in the accommodating cavity; one end of the connecting line is connected with the circuit board; the fixing structure is arranged in the containing cavity, a through hole matched with the connecting line is formed in the fixing structure, and the fixing structure is used for fixing the connecting line through the through hole. According to the technical scheme of the utility model, the fixing structure is arranged, so that the fixing capability of the photovoltaic optimizer on the connecting line can be obviously enhanced, the stress at the joint of the circuit board and the connecting line is reduced, and the reliability and durability of the product are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to a photovoltaic optimizer and a photovoltaic system. Background Art

[0002] At present, the use of new energy sources has received more and more attention, and photovoltaic systems that convert solar energy into electrical energy are gradually accepted by users. In order to improve the conversion efficiency of photovoltaic panels, photovoltaic optimizers are usually connected in series with photovoltaic panels. In related technologies, a structure for fixing cables is designed at the outlet of the photovoltaic optimizer. During actual use, the connection between the cable and the circuit board inside the photovoltaic optimizer often becomes loose due to the movement of the cable, resulting in poor reliability. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] In view of this, an embodiment of the first aspect of the present utility model provides a photovoltaic optimizer.

[0005] An embodiment of a second aspect of the utility model provides a photovoltaic system.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the first aspect of the utility model provides a photovoltaic optimizer, including: a shell assembly, a housing cavity is formed in the shell assembly, and the shell assembly is provided with a wire hole connected to the outside world; a circuit board, arranged in the housing cavity; a connecting wire, one end of the connecting wire is connected to the circuit board; a fixing structure, arranged in the housing cavity, the fixing structure is provided with a through hole adapted to the connecting wire, and the fixing structure is used to fix the connecting wire through the through hole.

[0007] The photovoltaic optimizer proposed in the utility model includes a shell assembly, a circuit board, a connecting wire and a fixing structure. By optimizing the internal structure and setting a fixing structure, the fixing ability of the photovoltaic optimizer to the connecting wire can be significantly enhanced, the stress at the connection between the circuit board and the connecting wire can be reduced, and the reliability and durability of the product can be improved.

[0008] A housing cavity is formed inside the shell assembly to provide physical protection for the circuit board and other internal components. In addition, the shell assembly is also provided with a wire hole connected to the outside world, allowing the connecting wire to enter the housing cavity from the outside and connect to the circuit board. The shell assembly can protect the internal circuit from the external environment such as water, dust, etc. The circuit board is installed in the housing cavity and can be connected to the connecting wire by welding or other means to ensure stable current transmission. One end of the connecting wire is connected to the photovoltaic panel, and the other end is introduced into the housing cavity through the wire hole and connected to the circuit board. It can transmit the electric energy collected from the photovoltaic panel to the circuit board and is the medium for electric energy transmission.

[0009] It should be emphasized that the fixing structure is arranged in the accommodating cavity, and one or more through holes are provided that match the diameter of the connecting wire. The connecting wire is fixed after passing through the through hole, thereby reducing the shaking and friction of the connecting wire during transportation and use, and protecting the connection point between the connecting wire and the circuit board. The design of the through hole ensures the coordination between the connecting wire and the fixing structure, which can effectively absorb and disperse the mechanical stress transmitted by the connecting wire, reduce the force directly acting on the connection point of the circuit board, and thus reduce the risk of failure at the connection.

[0010] After the connecting wire passes through the wire hole and the through hole of the fixed structure, it is connected to the circuit board. This connection method can be doubly supported by the wire hole and the through hole, thereby ensuring the stability of the connecting wire and the reliability of the circuit board connection point.

[0011] It should be added that this solution helps to reduce external influences, such as potential damage to circuit boards caused by environmental factors, by optimizing the design of the internal structure, thereby extending the service life of the product.

[0012] In general, this solution achieves stable fixation of the connection wires and stress dispersion of the circuit board connection points by designing a reasonable fixing structure and through holes, and optimizing the path and connection method of the connection wires, thereby improving the overall performance and reliability of the photovoltaic optimizer. In addition, by reducing the friction and movement of the connection wires, it also helps to reduce the wear of the connection wires and extend the overall life of the system.

[0013] In some technical solutions, optionally, the through hole includes a wire groove portion, and the opening size of the wire groove portion is smaller than or equal to the outer diameter of the connecting wire.

[0014] In this technical solution, since the opening size of the wire slot is smaller than or equal to the outer diameter of the connecting wire, the connecting wire will be stuck in the wire slot when passing through the through hole, thereby forming a fit. Furthermore, when the opening size of the wire slot is smaller than the outer diameter of the connecting wire, the two form a certain interference fit, which can effectively absorb and disperse the stress generated by the connecting wire during assembly and use. By using a through hole with an interference fit, the direct stress of the connecting wire on the connection point of the circuit board, especially on the welding point during welding, can be reduced, thereby reducing the risk of the welding point breaking due to long-term stress.

[0015] It should be noted that the opening size of the wire groove part refers to the maximum size corresponding to the opening of the wire groove part on the axial cross-section of the through hole. The connecting wire is generally inserted downward or upward from the opening of the wire groove part, and the insertion direction is not along the axial insertion direction of the through hole, so as to achieve its cooperation with the wire groove part.

[0016] It can be understood that although the wire slot design of the through hole requires a certain amount of pressure when the connecting wire passes through, this design simplifies the assembly process because once the connecting wire is passed through and fixed, no additional fixings are required to ensure its position.

[0017] In summary, the design of the wire groove in the through hole improves the fixing stability of the connecting wire and reduces the stress on the soldering points of the circuit board through precise size control and interference fit, thereby improving the reliability and durability of the entire system.

[0018] Furthermore, the through hole may be a fully enclosed hole or a semi-enclosed hole.

[0019] In some technical solutions, optionally, the through hole includes two extension portions connected to the wire groove portion, the extension portions extend from the wire groove portion along the thickness direction of the circuit board, the connecting line is located between the two extension portions, and the shortest distance between the two extension portions is less than the outer diameter of the connecting line.

[0020] In this technical solution, by providing the extension part, when the connecting wire passes through the through hole, the stress is not only concentrated on the wire slot part, but is dispersed to the two extension parts, which helps to reduce the local stress concentration on the connecting wire and the circuit board welding point.

[0021] The distance between the two extensions can be constant or variable. By limiting the shortest distance between the two extensions to be smaller than the outer diameter of the connecting wire, this design ensures the precise positioning of the connecting wire in the through hole and prevents the connecting wire from rotating or deviating in the through hole.

[0022] It can be understood that the extension portion extends along the thickness direction of the circuit board, providing an additional support point for the connecting wire, thereby enhancing the fixing effect of the connecting wire and ensuring its stability under various usage conditions.

[0023] Among them, the extension part can play a certain guiding role, making it easier to install the connecting line.

[0024] In some technical solutions, optionally, a fixing structure is provided between the circuit board and the wire hole, the circuit board is provided with at least one wiring portion, and one end of the connecting wire is connected to the wiring portion via the fixing structure.

[0025] In this technical solution, by locating the fixing structure between the circuit board and the wire hole, it is ensured that the connecting wire can be accurately positioned before entering the circuit board, thereby reducing installation errors. One or more wiring parts provided on the circuit board can provide a clear connection point for the connecting wire, and with the assistance of the fixing structure, the connection strength between the connecting wire and the circuit board can be strengthened.

[0026] The connection between the connecting wire and the wiring part may be achieved by welding or by a connector.

[0027] It can be understood that the fixing structure can effectively absorb and disperse the stress generated by the connecting wires during installation and use, and protect the wiring part of the circuit board from damage.

[0028] It can be understood that one end of the connecting wire is first connected to the wiring portion, and during subsequent assembly, the connecting wire can be directly inserted into the fixed structure, thereby simplifying the assembly process and improving production efficiency.

[0029] In some technical solutions, optionally, there are multiple wiring parts, and the multiple wiring parts are arranged on a side of the circuit board facing the wire hole.

[0030] In this technical solution, multiple wiring parts are provided, and multiple wiring parts allow the connection line to be connected to multiple points of the circuit board, so that more power transmission paths can be processed simultaneously, improving the overall connection efficiency. One end of the connection line is connected to multiple wiring parts through a fixed structure, which can simplify the wiring design and make the line layout neater and more orderly. The multiple wiring parts are arranged on the side of the circuit board facing the wire hole, which helps to optimize the spatial layout of the circuit board and make the assembly more compact.

[0031] At the same time, since multiple wiring parts are provided, greater flexibility can be provided, and the most suitable wiring point can be selected according to the number of connecting lines and layout requirements.

[0032] By distributing multiple wiring sections on the circuit board, the power load can be distributed more evenly, avoiding overloading of a single wiring point and improving the stability of the system. If a single wiring section carries too much current, it may generate too much heat. Multiple wiring sections can disperse this thermal effect and reduce the risk of local overheating.

[0033] In some technical solutions, optionally, the shell assembly includes: a first shell and a second shell that are interlocked, the circuit board is fixed on the inner wall of the second shell, and at least one of the first shell and the second shell is provided with a fixing structure.

[0034] In this technical solution, the housing assembly is formed by a first housing and a second housing by snapping together, protecting the internal circuit board and other components from external impact. The circuit board is fixed to the inner wall of the second housing, effectively utilizing the internal space of the housing, making the entire assembly more compact and easy to install and transport. The snap-fit ​​design simplifies the assembly process, making the installation and disassembly of the circuit board and other components more convenient, and is conducive to product maintenance and upgrades.

[0035] Furthermore, the gap between the first shell and the second shell can be connected by laser welding, or a sealing structure such as a sealing ring can be provided therein.

[0036] By providing a fixing structure in at least one of the two housings, the fixing structure can be used to fix the connecting wire, thereby ensuring a stable connection between the connecting wire and the circuit board and reducing vibration and stress.

[0037] It can be understood that the fixing structure can be designed on the first shell or the second shell as needed, or both of them can be provided with the fixing structure to adapt to different design and functional requirements.

[0038] The design of the fixed structure helps to protect the circuit board, especially the soldering points, and can absorb part of the stress transmitted by the connecting wires and reduce the mechanical fatigue of the soldering points.

[0039] Of course, the design of the housing assembly helps manage the electromagnetic compatibility of internal components, reducing EMI and improving the overall performance of the system.

[0040] In some technical solutions, optionally, the fixing structure is disposed on the second shell, and the through hole is disposed at one end of the fixing structure facing the first shell.

[0041] In this technical solution, the fixed structure is located in the second shell. On this basis, a through hole is provided at one end of the fixed structure facing the first shell. On the one hand, it is convenient for the connecting wire to be snapped into place. On the other hand, it can also guide the connecting wire from the second shell through the through hole to ensure the correct path of the connecting wire.

[0042] It can be understood that in this solution, only the fixing structure is provided on the second shell, and the through hole is arranged at the end of the fixing structure.

[0043] In some technical solutions, optionally, the first shell is provided with a fixed structure, and the second shell is provided with a fixed structure, the first shell and the second shell are snapped together, and the first hole portion of the fixed structure located on the first shell cooperates with the second hole portion of the fixed structure located on the second shell to form a through hole for the connecting wire to pass through.

[0044] In this technical solution, both the first shell and the second shell are provided with a fixing structure, and the two shells are connected together by snapping, and both shells are provided with a fixing structure, which provides a double fixing guarantee for the connecting wire and enhances the stability of the overall structure. The first hole portion and the second hole portion are precisely matched, ensuring that the through hole position through which the connecting wire passes is accurate, which is convenient for installation and maintenance.

[0045] The stress of the connecting wire is shared by the first hole and the second hole on the fixing structure on the two shells, which can more effectively disperse the stress and reduce the damage to a single welding point or a connecting point. The setting of the fixing structure can be optimized according to the spatial layout inside the shell, so that the path of the connecting wire is more reasonable when passing through the through hole.

[0046] In some technical solutions, optionally, the diameter of the wire hole is less than or equal to the outer diameter of the connecting wire.

[0047] In this technical solution, the diameter of the wire hole is less than or equal to the outer diameter of the connecting wire to form a fit, ensuring that the connecting wire is firmly fixed when passing through the wire hole, reducing the possibility of loosening. During assembly, the stress on the connecting wire can be dispersed to both the wire hole and the fixed structure, which helps to more evenly distribute the stress on the connecting wire and avoid stress concentration at a certain point, thereby reducing the risk of material fatigue and fracture.

[0048] Furthermore, the diameter of the wire hole is smaller than the outer diameter of the connecting wire, so that the two are interference-fitted, thereby improving stability.

[0049] In addition, the smaller wire hole forces the connection wire to be precisely positioned when passing through, which increases the stability of the connection and reduces failures caused by improper connection. Of course, the interference fit wire hole can prevent the connection wire from retreating or moving out due to vibration or external force during use.

[0050] Furthermore, if waterproofing or dustproofing is required, a smaller wire-through hole in combination with a sealing element can provide a better sealing effect.

[0051] In some technical solutions, optionally, the fixing structure is integrally formed with the shell assembly; or the fixing structure is connected to the shell assembly.

[0052] In this technical solution, the fixed structure and the shell assembly can be integrated or separate. When the two are separate structures, the fixed structure can be connected to the shell assembly by welding, bonding, snap-on, etc., and the specific connection object is the inner wall surface of the shell assembly.

[0053] An embodiment of the second aspect of the present application provides a photovoltaic system, including: a photovoltaic panel; and a photovoltaic optimizer according to any of the above embodiments, wherein the other end of the connecting wire in the photovoltaic optimizer is connected to the photovoltaic panel.

[0054] The photovoltaic system provided in the present application includes a photovoltaic panel and a photovoltaic optimizer. The use of the photovoltaic optimizer improves the efficiency of power transmission and ensures that the power collected from the photovoltaic panel can be efficiently and stably transmitted to the subsequent circuit system.

[0055] Since the photovoltaic system includes any of the above-mentioned photovoltaic optimizers, it has the beneficial effects of any of the above-mentioned photovoltaic optimizers, which will not be described in detail here.

[0056] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic structural diagram of a photovoltaic optimizer according to an embodiment of the utility model is shown;

[0058] Figure 2 A schematic structural diagram of a photovoltaic optimizer according to an embodiment of the utility model is shown;

[0059] Figure 3 A schematic structural diagram of a photovoltaic optimizer according to an embodiment of the utility model is shown;

[0060] Figure 4 A schematic diagram of a photovoltaic optimizer according to an embodiment of the utility model is shown;

[0061] Figure 5 A schematic structural diagram of a photovoltaic optimizer according to an embodiment of the utility model is shown;

[0062] Figure 6 A schematic structural diagram of a photovoltaic optimizer according to an embodiment of the utility model is shown;

[0063] Figure 7 A schematic structural diagram of a photovoltaic system according to an embodiment of the utility model is shown.

[0064] in, Figures 1 to 7 The corresponding relationship between the reference numerals and the component names is as follows:

[0065] 100: photovoltaic optimizer; 102: housing assembly; 1022: first housing; 1024: second housing; 1032: accommodating cavity; 1034: wire hole; 104: circuit board; 1042: wiring part; 106: connecting wire; 108: fixing structure; 1082: through hole; 1084: wire groove part; 1086: extension part; 1102: first hole part; 1104: second hole part;

[0066] 200: Photovoltaic system: 202: Photovoltaic panels. DETAILED DESCRIPTION

[0067] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0068] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0069] Refer to the following Figures 1 to 7 Some embodiments according to the present invention are described.

[0070] like Figure 1 and Figure 2 As shown, a photovoltaic optimizer 100 proposed in this embodiment includes a shell assembly 102, a circuit board 104, a connecting wire 106 and a fixing structure 108. By optimizing the internal structure and setting the fixing structure 108, the fixing ability of the photovoltaic optimizer 100 to the connecting wire 106 can be significantly enhanced, the stress at the connection between the circuit board 104 and the connecting wire 106 is reduced, and the reliability and durability of the product are improved.

[0071] like Figure 2 As shown, a housing cavity 1032 is formed inside the housing assembly 102 to provide physical protection for the circuit board 104 and other internal components. In addition, a wire hole 1034 communicating with the outside is also provided on the housing assembly 102 to allow the connecting wire 106 to enter the housing cavity 1032 from the outside and connect to the circuit board 104. The housing assembly 102 can protect the internal circuit from the external environment such as water, dust, etc. The circuit board 104 is installed in the housing cavity 1032 and can be connected to the connecting wire 106 by welding or other methods to ensure stable current transmission. Figure 3 As shown, one end of the connecting wire 106 is connected to the photovoltaic panel 202, and the other end is introduced into the accommodating cavity 1032 through the wire hole 1034 and connected to the circuit board 104. It can transmit the electric energy collected from the photovoltaic panel 202 to the circuit board 104 and is a medium for electric energy transmission.

[0072] It should be emphasized that if Figure 3 and Figure 4 As shown, the fixing structure 108 is disposed in the accommodating cavity 1032, and one or more through holes 1082 are provided that match the diameter of the connecting wire 106. The connecting wire 106 is fixed after passing through the through hole 1082, thereby reducing the shaking and friction of the connecting wire 106 during transportation and use, and protecting the connection point of the connecting wire 106 and the circuit board 104. The design of the through hole 1082 ensures the cooperation between the connecting wire 106 and the fixing structure 108, and this cooperation can effectively absorb and disperse the mechanical stress transmitted by the connecting wire 106, reduce the force directly acting on the connection point of the circuit board 104, and thus reduce the risk of failure at the connection.

[0073] Among them, the fixed structure and the shell assembly can be integrated or separated. When the two are separated structures, the fixed structure can be connected to the shell assembly by welding, bonding, clamping, etc., and the specific connection object is the inner wall surface of the shell assembly.

[0074] After the connecting wire 106 passes through the wire hole 1034 and the through hole 1082 of the fixing structure 108, it is connected to the circuit board 104. This connection method can be doubly supported by the wire hole 1034 and the through hole 1082, thereby ensuring the stability of the connecting wire 106 and the reliability of the connection point of the circuit board 104.

[0075] It should be added that, this solution helps to reduce external influences, such as potential damage to the circuit board 104 caused by environmental factors, by optimizing the design of the internal structure, thereby extending the service life of the product.

[0076] In general, the solution achieves stable fixation of the connecting wire 106 and stress dispersion of the connection point of the circuit board 104 by designing a reasonable fixing structure 108 and through hole 1082, and optimizing the path and connection method of the connecting wire 106, thereby improving the overall performance and reliability of the photovoltaic optimizer 100. In addition, by reducing the friction and movement of the connecting wire 106, it also helps to reduce the wear of the connecting wire 106 and extend the overall life of the system.

[0077] In a specific embodiment, Figure 5 As shown, a wire groove portion 1084 is provided, and the diameter of the wire groove portion 1084 is limited to be smaller than or equal to the outer diameter of the connecting wire 106. When the connecting wire passes through the through hole, it will be stuck in the wire groove portion, thereby forming a fit. Furthermore, when the opening size of the wire groove portion is smaller than the outer diameter of the connecting wire, the two form a certain interference fit, which can effectively absorb and disperse the stress generated by the connecting wire 106 during assembly and use. By adopting the through hole 1082 with an interference fit, the direct stress of the connecting wire 106 on the connection point of the circuit board 104, especially on the welding point during the welding process, can be reduced, thereby reducing the risk of the welding point breaking due to long-term stress.

[0078] It should be noted that the opening size of the wire groove part refers to the maximum size corresponding to the opening of the wire groove part on the axial cross-section of the through hole. The connecting wire is generally inserted downward or upward from the opening of the wire groove part, and the insertion direction is not along the axial insertion direction of the through hole, so as to achieve its cooperation with the wire groove part.

[0079] It is understandable that although the design of the wire groove portion 1084 of the through hole 1082 requires a certain amount of pressure when the connecting wire 106 passes through, this design simplifies the assembly process because once the connecting wire 106 passes through and is fixed, no additional fixings are required to ensure its position.

[0080] In summary, the design of the wire groove portion 1084 in the through hole 1082 improves the fixing stability of the connecting wire 106 and reduces the stress on the welding point of the circuit board 104 through precise size control and interference fit, thereby improving the reliability and durability of the entire system.

[0081] In a specific embodiment, the diameter of the wire groove portion 1084 is 5.5 mm, and the outer diameter of the connecting wire 106 is 5.3 mm.

[0082] In a specific embodiment, the diameter of the wire groove portion 1084 is 6 mm, and the outer diameter of the connecting wire 106 is 5.8 mm.

[0083] Furthermore, the through hole 1082 may be a fully enclosed hole or a semi-enclosed hole.

[0084] In some embodiments, optionally, an extension portion 1086 is provided so that when the connecting wire 106 passes through the through hole 1082 , the stress is not only concentrated on the wire groove portion 1084 , but is dispersed to the two extension portions 1086 , which helps to reduce the local stress concentration on the welding point between the connecting wire 106 and the circuit board 104 .

[0085] Among them, the distance between the two extensions 1086 can be constant or variable. By limiting the shortest distance between the two extensions 1086 to be smaller than the outer diameter of the connecting wire 106, this design ensures the precise positioning of the connecting wire 106 in the through hole 1082 and prevents the connecting wire 106 from rotating or offsetting in the through hole 1082.

[0086] It can be understood that the extension portion 1086 extends along the thickness direction of the circuit board 104, providing an additional support point for the connecting wire 106, thereby enhancing the fixing effect of the connecting wire 106 and ensuring its stability under various usage conditions.

[0087] The extension portion 1086 can play a certain guiding role, making it easier to install the connecting line 106 .

[0088] In some embodiments, the fixing structure 108 is optionally located between the circuit board 104 and the wire hole 1034 to ensure that the connecting wire 106 can be accurately positioned before entering the circuit board 104, thereby reducing installation errors. The one or more wiring portions 1042 provided on the circuit board 104 can provide a clear connection point for the connecting wire 106. With the assistance of the fixing structure 108, the connection strength between the connecting wire 106 and the circuit board 104 can be strengthened.

[0089] The connection between the connecting wire 106 and the connecting portion 1042 may be achieved by welding or by using a connector.

[0090] It can be understood that the fixing structure 108 can effectively absorb and disperse the stress generated by the connecting wire 106 during installation and use, and protect the wiring portion 1042 of the circuit board 104 from damage.

[0091] It can be understood that one end of the connecting wire 106 is first connected to the wiring portion 1042, and during subsequent assembly, the connecting wire 106 can be directly inserted into the fixing structure 108, thereby simplifying the assembly process and improving production efficiency.

[0092] In a specific embodiment, multiple wiring portions 1042 are provided, and multiple wiring portions 1042 allow the connection line 106 to be connected to multiple points of the circuit board 104, so that more power transmission paths can be processed simultaneously, and the overall connection efficiency is improved. One end of the connection line 106 is connected to the multiple wiring portions 1042 through the fixing structure 108, which can simplify the wiring design and make the line layout neater and more orderly. The multiple wiring portions 1042 are arranged on one side of the circuit board 104 close to the wire hole 1034, which helps to optimize the spatial layout of the circuit board 104 and make the components more compact.

[0093] At the same time, since a plurality of wiring portions 1042 are provided, greater flexibility can be provided, and the most suitable wiring point can be selected according to the number and layout requirements of the connection lines 106 .

[0094] By distributing multiple wiring parts 1042 on the circuit board 104, the power load can be distributed more evenly, avoiding overload of a single wiring point, and improving the stability of the system. If a single wiring part 1042 carries too much current, it may generate too much heat. Multiple wiring parts 1042 can disperse this thermal effect and reduce the risk of local overheating.

[0095] Furthermore, the number of the wiring parts is four, which are arranged in groups of two, wherein one group includes the input positive line and the negative line, and the other group includes the output positive line and the negative line.

[0096] In another specific embodiment, the housing assembly 102 is formed by a first housing 1022 and a second housing 1024 by snapping together, protecting the internal circuit board 104 and other components from external impact. The circuit board 104 is fixed to the inner wall of the second housing 1024, effectively utilizing the internal space of the housing, making the entire assembly more compact and convenient for installation and transportation. The snap-fit ​​design simplifies the assembly process, making the installation and disassembly of the circuit board 104 and other components more convenient, which is conducive to product maintenance and upgrading.

[0097] Furthermore, the gap between the first shell 1022 and the second shell 1024 may be connected by laser welding, or a sealing structure such as a sealing ring may be provided therein.

[0098] By providing a fixing structure 108 on at least one of the two housings, the fixing structure 108 can be used to fix the connecting wire 106 , thereby ensuring a stable connection between the connecting wire 106 and the circuit board 104 and reducing vibration and stress.

[0099] It is understood that the fixing structure 108 can be designed on the first shell 1022 or the second shell 1024 as needed, for example Figure 5 As shown, it is arranged on the second housing 1024. Or as Figure 6 As shown, both are provided with a fixing structure 108 to adapt to different design and functional requirements.

[0100] The design of the fixing structure 108 helps to protect the circuit board 104, especially the soldering points, and can absorb part of the stress transmitted by the connecting wires 106, thereby reducing the mechanical fatigue of the soldering points.

[0101] Of course, the design of the housing assembly 102 helps manage the electromagnetic compatibility of internal components, reduce electromagnetic interference, and improve the overall performance of the system.

[0102] In a specific embodiment, optionally, Figure 5 As shown, the fixing structure 108 is located in the second shell 1024. On this basis, a through hole 1082 is provided at one end of the fixing structure 108 facing the first shell 1022. On the one hand, it is convenient for the connecting wire 106 to snap into place. On the other hand, it can also guide the connecting wire 106 from the second shell 1024 through the through hole 1082 to ensure the correct path of the connecting wire 106.

[0103] It can be understood that in this solution, only the fixing structure 108 is provided on the second shell 1024 , and the through hole 1082 is arranged at the end of the fixing structure 108 .

[0104] In a specific embodiment, optionally, Figure 6 As shown, both the first shell 1022 and the second shell 1024 are provided with a fixing structure 108, the fixing structure 108 of the first shell 1022 is provided with a first hole portion 1102, the fixing structure 108 of the second shell 1024 is provided with a second hole portion 1104, and the two shells are connected together by snapping, and both shells are provided with a fixing structure 108. In one embodiment, the fixing structures 108 provided on the two shells can be aligned so that a through hole for the connecting wire to pass through is formed between the first hole portion 1102 and the second hole portion 1104, at which time the connecting wire can be arranged toward the first shell 1022 to cooperate with the first hole portion 1102, or can be arranged toward the second shell 1024 to cooperate with the second hole portion 1104, or can even cooperate with the first hole portion 1102 and the second hole portion 1104 at the same time.

[0105] The holes of the fixing structure 108 on the first shell 1022 and the second shell 1024 are precisely matched, ensuring that the through hole 1082 through which the connecting wire 106 passes is accurately positioned, which is convenient for installation and maintenance.

[0106] In another embodiment, the fixing structures 108 arranged on the two shells are staggered. At this time, the connecting line can be selected to extend outward through the first hole portion 1102 or the second hole portion 1104 according to the specific lead-out position, thereby improving the flexibility of the lead-out position, while also meeting the fixing requirements and enhancing the stability of the overall structure.

[0107] The fixing structures 108 on the two shells share the stress of the connecting wire 106, which can more effectively disperse the stress and reduce damage to a single welding point or connection point. The setting of the fixing structure 108 can be optimized according to the spatial layout inside the shell, so that the path of the connecting wire 106 when passing through the through hole 1082 is more reasonable.

[0108] In a specific embodiment, optionally, the diameter of the wire hole 1034 is smaller than the outer diameter of the connecting wire 106 to form an interference fit, thereby ensuring that the connecting wire 106 is firmly fixed when passing through the wire hole 1034 and reducing the possibility of loosening. During assembly, the stress on the connecting wire 106 can be dispersed to both the wire hole 1034 and the fixed structure 108, thereby helping to more evenly distribute the stress on the connecting wire 106 and avoid stress concentration at a certain point, thereby reducing the risk of material fatigue and fracture.

[0109] In addition, the smaller wire hole 1034 forces the connecting wire 106 to be precisely positioned when passing through, which increases the stability of the connection and reduces failures caused by improper connection. Of course, the interference fit wire hole 1034 can prevent the connecting wire 106 from retreating or moving out due to vibration or external force during use.

[0110] Furthermore, if waterproofing or dustproofing is required, the smaller wire hole 1034 can cooperate with the sealing element to provide a better sealing effect.

[0111] The present application provides another embodiment of a photovoltaic system 200, such as Figure 7 As shown, the photovoltaic system 200 includes a photovoltaic panel 202 and a photovoltaic optimizer 100. The use of the photovoltaic optimizer 100 improves the efficiency of power transmission, ensuring that the power collected from the photovoltaic panel 202 can be efficiently and stably transmitted to the subsequent circuit system.

[0112] Since the photovoltaic system 200 includes any of the above-mentioned photovoltaic optimizers 100 , it has the beneficial effects of any of the above-mentioned photovoltaic optimizers 100 , which will not be described in detail here.

[0113] In a specific embodiment, a photovoltaic optimizer is provided, in which a structural feature is designed inside the shell of the optimizer, which has a limiting effect on the wires and a supporting effect on the wires when in contact with the circuit board, thereby reducing the stress between the input and output wires and the circuit board during assembly and use, strengthening the support and fixation of the optimizer wires, reducing the stress on the internal circuit board and wires, and increasing the reliability of the entire product.

[0114] Specifically, the photovoltaic optimizer includes: an upper shell (ie, a first shell), a lower shell (ie, a second shell), a circuit board, and connecting wires.

[0115] The upper shell and the lower shell are plastic shells, and the circuit board and other parts are assembled in the sealed cavity of the upper and lower shells.

[0116] The connecting wires and the circuit board are pre-processed by soldering them together before assembly.

[0117] The connecting wires and the circuit board become a whole after assembly, and stress will exist at the welding points during assembly.

[0118] After the connecting wires are assembled with the circuit board, they are assembled together with the lower shell during the assembly stage. The connecting wires place the four wires on the fixed feature (i.e., the fixed structure). The arc diameter at the bottom of the fixed feature is 5.5mm, which is 0.2mm smaller than the diameter of the connecting wire of 5.3mm. There will be an interference fit relationship between the four connecting wires and the bottom of the fixed feature, that is, the connecting wires can be fixed on the fixed feature.

[0119] The fixed features will give certain stress to the connecting wires from three directions: bottom, left and right, so that the connecting wires are limited on the fixed features. Two of the connecting wires are about 1100mm long, and the other two are about 200mm. There will inevitably be a lot of shaking during the assembly process. When there are no fixed features, the force received by the connecting wires will be directly transmitted to the circuit board. In this way, there will be great stress at the welding point between the connecting wires and the circuit board, which will cause the risk of failure.

[0120] In the case of fixed features, the force acting on the connecting wire will be directly transmitted to the fixed features on three surfaces, leaving only one direction of force transmission to the welding point between the circuit board and the connecting wire, greatly reducing the risk of failure.

[0121] After the interference fit of the connecting wires is fixed, the four connecting wires will continue to be placed in the wire outlet (i.e. the wire hole), and then the upper shell and the lower shell are welded together by ultrasonic welding. The size of the wire outlet is 0.2mm smaller than the size of the connecting wire, and the connecting wire is tightly clamped by ultrasonic welding.

[0122] After the product is assembled, its external connecting wires will be subjected to stress, and all the force will act on the outlet. The failure rate of the outlet will be greatly increased. However, with fixed features, part of the force will be transferred to the fixed features, which has double insurance and improves the reliability of the product.

[0123] According to the photovoltaic optimizer provided by the utility model, a fixing structure is provided, which can significantly enhance the fixing ability of the photovoltaic optimizer to the connecting wire, reduce the stress at the connection between the circuit board and the connecting wire, and improve the reliability and durability of the product.

[0124] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0125] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0126] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0127] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic optimizer, characterized in that: include: A housing assembly, wherein a receiving cavity is formed in the housing assembly and a wire-passing hole communicating with the outside is provided on the housing assembly; A circuit board is arranged in the accommodating cavity; A connecting wire, one end of which is connected to the circuit board; A fixing structure is arranged in the accommodating cavity, and a through hole matched with the connecting line is arranged on the fixing structure, and the fixing structure is used to fix the connecting line through the through hole.

2. The photovoltaic optimizer according to claim 1, characterized in that: The through hole includes a wire groove portion, and an opening size of the wire groove portion is smaller than or equal to an outer diameter of the connecting wire.

3. The photovoltaic optimizer according to claim 2, characterized in that: The through hole includes two extension parts connected to the wire groove part, the extension parts extend from the wire groove part along the thickness direction of the circuit board, the connecting line is located between the two extension parts, and the shortest distance between the two extension parts is less than or equal to the outer diameter of the connecting line.

4. The photovoltaic optimizer according to claim 1, characterized in that: The fixing structure is arranged between the circuit board and the wire-passing hole. The circuit board is provided with at least one wiring portion. One end of the connecting wire is connected to the wiring portion via the fixing structure.

5. The photovoltaic optimizer according to claim 4, characterized in that: There are multiple wiring parts, and the multiple wiring parts are arranged on a side of the circuit board facing the wire-passing hole.

6. The photovoltaic optimizer according to claim 1, characterized in that: The housing assembly comprises: The first shell and the second shell are buckled with each other, the circuit board is fixed on the inner wall of the second shell, and at least one of the first shell and the second shell is provided with the fixing structure.

7. The photovoltaic optimizer according to claim 6, characterized in that: The fixing structure is disposed on the second shell, and the through hole is disposed at one end of the fixing structure facing the first shell.

8. The photovoltaic optimizer according to claim 6, characterized in that: The first shell is provided with the fixing structure, and the second shell is provided with the fixing structure, the first shell and the second shell are buckled together, and the first hole portion of the fixing structure on the first shell cooperates with the second hole portion of the fixing structure on the second shell to form the through hole for the connecting line to pass through.

9. The photovoltaic optimizer according to claim 1, characterized in that: The diameter of the wire hole is smaller than or equal to the outer diameter of the connecting wire.

10. The photovoltaic optimizer according to claim 1, characterized in that: The fixing structure is integrally formed with the housing assembly; or The fixing structure is connected to the housing assembly.

11. A photovoltaic system, characterized in that: include: Photovoltaic panels; The photovoltaic optimizer according to any one of claims 1 to 10, wherein the other end of the connecting wire in the photovoltaic optimizer is connected to the photovoltaic panel.

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