Wind disturbance resisting structure and photovoltaic optimizer thereof

Abstract

The invention relates to the technical field of photovoltaic optimizers, in particular to a wind disturbance resisting structure and a photovoltaic optimizer comprising the wind disturbance resisting structure. Comprising a containing block arranged on one side of the connecting cable, a through hole formed in the containing block, a stress assembly arranged on the containing block, a transmission assembly arranged on the containing block and a clamping assembly arranged on the containing block. The connecting cable with the redundant length is directly collected into the containing block by the supporting assembly installed at the top of the tightening assembly, so that the connecting cable does not fall down, the clamping force of the clamping assembly can be adjusted along with the change of wind power, the connecting cable keeps enough clamping force all the time, and the clamping efficiency is improved. The connection cable is prevented from being damaged by unnecessary clamping force, so that the service life of the connection cable is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic optimizers, in particular to an anti-wind disturbance structure and a photovoltaic optimizer thereof. Background Art

[0002] Photovoltaic optimizer is an important technology to improve efficiency and safety in photovoltaic systems. It solves the mismatch problem in traditional photovoltaic systems by accurately controlling the power output of each component, thereby significantly improving the overall power generation efficiency. Photovoltaic optimizer is usually fixed on the bottom side of the photovoltaic panel and connected to the photovoltaic panel through cables.

[0003] When the existing photovoltaic optimizer cables are connected to the photovoltaic panels, it is easy to encounter the situation where the cables are long or short. If the cables are short, the photovoltaic optimizer cannot be connected. If the cables are long, after the cables are connected, they are naturally bent and hanging. The photovoltaic panels are generally installed in open and unobstructed areas. When encountering strong winds, the long hanging cables are shaken by the wind, thus affecting the connection and service life of the cables. In addition, the existing photovoltaic optimizers do not have a suitable installation structure, which makes the photovoltaic optimizer too close to the photovoltaic panel, resulting in overheating or unstable installation. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problem that the above-mentioned cables are long and will shake randomly in windy weather, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide a wind resistant structure.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: including, a tightening unit, including a accommodating block arranged on one side of the connecting cable, a through hole arranged on the accommodating block, a tightening assembly arranged on the accommodating block, a supporting assembly arranged on the tightening assembly, a force-bearing assembly arranged on the accommodating block, a transmission assembly arranged on the accommodating block, and a clamping assembly arranged on the accommodating block; a telescopic unit, including a support plate arranged on the mounting frame, a telescopic plate arranged on the support plate, a tightening block arranged on the telescopic plate, and a cylinder arranged on the telescopic plate.

[0008] As a preferred solution of the anti-wind disturbance structure described in the present invention, the tightening assembly includes a guide rod arranged on the accommodating block, a base plate arranged on the guide rod, a snap block arranged on the base plate, a tensioning spring arranged on the base plate, and a mounting block arranged on the tensioning spring.

[0009] As a preferred solution of the anti-wind disturbance structure of the present invention, the support assembly includes a top plate arranged on the mounting block, a support plate arranged on the top plate, a support wheel arranged on the support plate, and a corresponding groove arranged on the support wheel.

[0010] As a preferred solution of the anti-wind disturbance structure of the present invention, the force-bearing component includes a through slot arranged on the accommodating block, a swing block arranged on the through slot, and a fan blade arranged on the swing block.

[0011] As a preferred solution of the anti-wind disturbance structure described in the present invention, the transmission assembly includes a rocking arm arranged on the rocking block, a guide member arranged on the inner wall of the accommodating block, a moving member arranged on the guide member, and a pressure block arranged on the inner wall of the accommodating block.

[0012] As a preferred solution of the anti-wind disturbance structure of the present invention, the guide member includes a slide rod arranged on the accommodating block, and a slider arranged on the slide rod.

[0013] As a preferred solution of the anti-wind disturbance structure of the present invention, the moving member includes a matching block arranged on the slider, an arc-shaped groove arranged on the matching block, and a contact pressure block arranged on the matching block.

[0014] As a preferred solution of the anti-wind disturbance structure of the present invention, the clamping assembly includes a groove arranged on the accommodating block, an extension groove arranged on the groove, a connecting rod arranged on the pressure block, and a cross plate arranged on the connecting rod.

[0015] As a preferred solution of the anti-wind disturbance structure of the present invention, the clamping assembly further includes a vertical rod arranged on the horizontal plate, a pressure plate arranged on the vertical rod, and a restoring spring arranged on the groove and connected to the horizontal plate.

[0016] The beneficial effects of the anti-wind disturbance structure described in the present invention are as follows: the present invention uses a tightening component installed inside the accommodating block. After the connection cable and the photovoltaic panel cable are connected, the tightening component can be embedded inside the accommodating block, so that the excess length of the connecting cable is directly received into the accommodating block by the supporting component installed on the top of the tightening component, so that the connecting cable will not sag, and when the wind blows the connecting cable, the clamping component can adjust the clamping force as the wind changes, so that the connecting cable always maintains sufficient clamping force. When the wind stops, the clamping force is also canceled, avoiding damage to the connecting cable by unnecessary clamping force, thereby increasing the service life of the connecting cable.

[0017] In actual use, there is still the problem of inconvenient installation of photovoltaic optimizers.

[0018] In order to solve the above technical problems, the present invention also provides the following technical solutions: a photovoltaic optimizer, including the above wind disturbance resistance structure, and also including a photovoltaic optimizer, including a shell, a connecting cable arranged on the shell, and a mounting frame arranged on the shell; the shell includes a DC to DC converter for receiving the variable DC voltage generated by the photovoltaic component and converting it into a fixed DC voltage; the DC to DC converter includes a maximum power point tracking algorithm, which can monitor the output of the photovoltaic component in real time and adjust the operating point to the maximum power point.

[0019] Beneficial effects of the photovoltaic optimizer described in the present invention: the present invention uses a customized mounting frame so that the photovoltaic optimizer can be directly installed on the bottom side of the photovoltaic panel, and the height of the mounting frame allows a certain distance to be maintained between the photovoltaic optimizer and the photovoltaic panel to avoid overheating due to being too close to the photovoltaic panel, and also shortens the connection distance between the photovoltaic optimizer and the photovoltaic panel to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 This is the overall schematic diagram of the wind-resistant structure.

[0022] Figure 2 Schematic diagram of the tightening components of the wind-resistant structure.

[0023] Figure 3 for Figure 1 Enlarged view of point A in .

[0024] Figure 4 Figure 1Enlarged view of point B in .

[0025] Figure 5 Schematic diagram of the pressure plate of the wind-resistant structure.

[0026] Figure 6 Schematic diagram of the appearance of a photovoltaic optimizer. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] Reference Figure 6 , which is the first embodiment of the present invention, and this embodiment provides a photovoltaic optimizer, including a photovoltaic optimizer 100. The photovoltaic optimizer 100 improves power generation efficiency, solves mismatch problems, increases power generation, improves system reliability and safety, reduces maintenance costs, and supports intelligent monitoring through MPPT (MPPT is the abbreviation of "maximum power point tracking", which is a key technology used in solar photovoltaic systems and other renewable energy systems to ensure that photovoltaic panels or modules operate at their maximum efficiency points).

[0032] Specifically, the photovoltaic optimizer 100 includes a shell 101, which is the optimizer body. A connecting cable 102 is installed on the outer wall of the shell 101, and the connecting cable 102 is connected to the cable of the photovoltaic panel. A mounting frame 103 is installed on the top of the shell 101, and the mounting frame 103 installs the shell 101 on the support frame of the photovoltaic panel, so that the shell 101 is located on the bottom side of the photovoltaic panel; the shell includes a DC to DC converter for receiving the variable DC voltage generated by the photovoltaic module and converting it into a fixed DC voltage; the DC to DC converter includes a maximum power point tracking algorithm, which can monitor the output of the photovoltaic module in real time and adjust the operating point to the maximum power point.

[0033] Operation process: When installing the photovoltaic optimizer 100, connect the connecting cable 102 to the cable of the photovoltaic panel. The photovoltaic optimizer 100 independently tracks the maximum power point of each photovoltaic component and adjusts in real time to ensure optimal power generation efficiency. When there is shadow or inconsistent component performance, the optimizer independently controls each component to reduce the impact of mismatch. It can also monitor the status of the component, prevent failures, and achieve rapid shutdown to ensure safety, and cooperate with the intelligent system for remote monitoring and management. The mounting frame 103 allows the photovoltaic optimizer 100 to be directly installed on the bottom side of the photovoltaic panel, and the height of the mounting frame 103 allows a certain distance to be maintained between the photovoltaic optimizer 100 and the photovoltaic panel to avoid overheating due to being too close to the photovoltaic panel, and also shortens the connection distance between the photovoltaic optimizer 100 and the photovoltaic panel to a certain extent.

[0034] Example 2

[0035] Reference Figure 1-Figure 6 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: a tightening unit 200 includes a accommodating block 201 arranged on one side of the connecting cable 102. The outer wall of the accommodating block 201 is provided with two groups of through holes 202. The connecting cable 102 directly penetrates the interior of the accommodating block 201 through the two groups of through holes 202. A tightening assembly 203 is installed on the inner bottom wall of the accommodating block 201. After the connecting cable 102 is connected to the photovoltaic panel cable, the tightening assembly 203 can be embedded in the accommodating block 201, so that the excess length of the connecting cable 102 is directly collected into the interior of the accommodating block 201 by the supporting assembly 204 installed on the top of the tightening assembly 203, so that the connecting cable 102 will not sag, and in case of When the wind blows the connecting cable 102, the force-bearing component 205 of the accommodating block 201 is blown by the wind, and the force-bearing component 205 transmits the force received to the clamping component 207 through the transmission component 206 installed on the accommodating block 201, so that the clamping component 207 is clamped on the connecting cable 102, so that the connecting cables 102 on the two sets of through holes 202 are clamped and fixed by the clamping component 207, and the clamping force changes with the wind force, so that the connecting cable 102 always maintains sufficient clamping force. When the wind stops, the clamping force is also cancelled, avoiding unnecessary clamping force from damaging the connecting cable 102, thereby improving the service life of the connecting cable 102. The following is a data table of the clamping force required for the cable corresponding to the wind force level;

[0036]

[0037] It can be seen from the data table that as the wind force and wind speed increase, the pressure on the connecting cable 102 also increases accordingly, and the clamping force required for the connecting cable 102 also needs to increase accordingly to ensure the stable state of the connecting cable 102. The force received by the force-bearing component 205 is transferred to the clamping component 207 through the transmission component 206 installed on the accommodating block 201. The greater the wind force received by the force-bearing component 205, the greater the force received by the force-bearing component 205 is transferred to the clamping component 207 by the transmission component 206, so that the force of the clamping component 207 on the connecting cable 102 also increases accordingly. As the wind force increases, the connecting cable 102 always remains in a tightened and stable state, thereby ensuring the normal operation of the photovoltaic optimizer 100.

[0038] Specifically, the tightening assembly 203 includes four groups of guide rods 203a arranged on the accommodating block 201, the guide rods 203a pass through the bottom of the accommodating block 201, a bottom plate 203b is installed at the bottom of the guide rods 203a, a buckle block 203c is installed on the outer wall of the bottom plate 203b, a tensioning spring 203d is installed on the top of the bottom plate 203b, and a mounting block 203e is installed on the top of the tensioning spring 203d. After the connection of the connecting cable 102 is completed, the bottom plate 203b is pushed toward one side of the accommodating block 201 so that the buckle block 203c is buckled in the accommodating block 201. At this time, the supporting assembly 204 installed on the top side of the mounting block 203e pushes the connecting cable 102 to the top side cavity area of ​​the accommodating block 201, and its tensioning spring 203d is used to apply elastic force to the mounting block 203e to ensure that the connecting cable 102 can be tightened upward by the tensioning spring 203d.

[0039] Furthermore, the support assembly 204 includes a top plate 204a arranged on the mounting block 203e, and two groups of support plates 204b are installed on the top of the top plate 204a. The two groups of support plates 204b install the support wheel 204c, and the outer wall of the support wheel 204c is provided with three groups of corresponding grooves 204d, and the corresponding grooves 204d respectively correspond to the connecting cables 102 on one side. When the bottom plate 203b is pushed upward, the corresponding grooves 204d of the support wheel 204c push the matching connecting cable 102 upward, and the columnar shape of the support wheel 204c makes the connecting cable 102 bend more gently, thereby avoiding excessive bending of the connecting cable 102.

[0040] Furthermore, the force-bearing component 205 includes a through groove 205a arranged on the accommodating block 201, and a rocking block 205b is installed on the inner wall of the through groove 205a through a pin shaft, and a fan blade 205c is installed at the end of the rocking block 205b. The fan blade 205c is used to expand the wind receiving area and increase the force of the wind on the rocking block 205b. The fan blade 205c can be blown by the wind on both sides of the connecting cable 102, and the two ends of the connecting cable 102 are blocked by the accommodating block, so the wind direction at the two ends can be blocked and will not affect the connecting cable 102, and the longitudinal wind can be blocked by the installation surface and the photovoltaic panel above, so the windward side of the fan blade only needs to be considered to be set on both sides of the connecting cable 102.

[0041] Furthermore, the transmission assembly 206 includes a rocking arm 206a arranged on the rocking block 205b, a guide member 206b installed on the inner wall of the accommodating block 201, a moving member 206c installed on the top side of the guide member 206b, and the rocking arm 206a is embedded in the interior of the moving member 206c. When the fan blade 205c is blown to one side by the wind, its rocking arm 206a drives the moving member 206c to move along the guide member 206b, and the movement of the moving member 206c drives the pressure block 206d on the inner wall of the accommodating block 201 to move, and the pressure block 206d drives the clamping assembly 207 to move.

[0042] Furthermore, the guide member 206b includes two groups of slide bars 206b-1 installed on the inner wall of the accommodating block 201, and a group of sliders 206b-2 are commonly installed on the outer wall of the two groups of slide bars 206b-1, and the sliders 206b-2 can slide along the slide bars 206b-1.

[0043] Furthermore, the moving part 206c includes a matching block 206c-1 installed on the top of the slider 206b-2, an arc groove 206c-2 is opened on the top of the matching block 206c-1, and the rocker arm 206a is embedded in the arc groove 206c-2, and a contact block 206c-3 is installed on the outer wall of the matching block 206c-1, and the contact block 206c-3 is located on the side of the pressure block 206d.

[0044] Furthermore, the clamping assembly 207 includes a groove 207a arranged on the accommodating block 201, an extension groove 207b arranged on the groove 207a, the extension groove 207b extends to the interior of the through hole 202, a connecting rod 207c is installed at the bottom of the pressure block 206d, the connecting rod 207c extends to the interior of the extension groove 207b, and a cross plate 207d is installed at the bottom of the connecting rod 207c. The clamping assembly 207 also includes three groups of vertical rods 207e installed at the bottom of the cross plate 207d, and the bottoms of the three groups of vertical rods 207e are respectively installed with pressure plates 207f, and a return spring 207g is installed on the bottom wall of the groove 207a and connected to the cross plate 207d. When the contact block 206c-3 moves to contact the pressure block 206d, the pressure block 206d moves to drive the connecting rod 207c to move, and the movement of the connecting rod 207c drives the three groups of pressure plates 207f on the bottom side to move downward synchronously, thereby contacting the connecting cable 102.

[0045] The rest of the structure is the same as that of Example 1.

[0046] Operation process: When the wind blows, the wind blows the fan blade 205c to swing to one side, and the swing of the fan blade 205c drives the swing block 205b to rotate around the pin shaft, and the rotation of the swing block 205b drives the swing arm 206a to move, and the swing arm 206a contacts the matching block 206c-1 through the arc groove 206c-2 to move, and the matching block 206c-1 moves to drive the contact block 206c-3 to move, and the contact block 206c-3 drives the pressure block 206d to move, and the pressure block 206d moves downward to drive the connecting rod 207c to move, and the movement of the connecting rod 207c drives the horizontal plate 207d to move, and the horizontal plate 207d presses the pressure plate 207f on the three groups of vertical rods 207e downward synchronously, so that the pressure plate 207f contacts the connecting cable 102. At this time, if the wind force The larger the value, the greater the force on the rocking block 205b, which makes the pressing force of the contact block 206c-3 on the pressure block 206d greater, and finally the pressure of the pressure plate 207f on the connecting cable 102 greater, so that the clamping force can change with the wind force. When there is no wind, the return spring 207g can push the cross plate 207d upward, so that the fan blades 205c and the pressure plate 207f are restored. At this time, the connecting cable 102 is no longer subjected to the clamping force. This structure adjusts the size of the clamping force through wind force, which improves the defect that the traditional clamping can easily cause fatigue of the connecting cable 102. By applying appropriate clamping force according to demand, fatigue damage of the connecting cable 102 is avoided to the greatest extent, and the invention life of the connecting cable 102 is effectively improved.

[0047] Example 3

[0048] Reference Figure 6, which is the third embodiment of the present invention. This embodiment is different from the above embodiments in that it also includes a telescopic unit 300, including a support plate 301 arranged on the mounting frame 103, the support plate 301 plays a mounting role for the telescopic rod, and the accommodating block 201 is connected to the telescopic plate 302 through a cylinder 304, and the telescopic plate 302 can move the accommodating block 201 to the middle section of the connecting cable 102, thereby improving the supporting effect of the accommodating block 201 on the connecting cable 102, and a tightening block 303 is installed on the top of the telescopic plate 302, and the tightening block 303 locks the adjusted telescopic plate 302.

[0049] The rest of the structure is the same as that of Example 2.

[0050] Operation process: After the connection between the connecting cable 102 and the cable of the photovoltaic panel is completed, pull the interface to tighten the cable of the photovoltaic panel, and then move the receiving block 201 to the middle section of the connecting cable 102. Then, the connecting cable 102 can be tightened so that the receiving block 201 can support the middle section of the connecting cable 102, so that the use of the receiving block 201 can adapt to the length of the photovoltaic panel cable.

[0051] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0052] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0053] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wind disturbance resistance structure, characterized in that: include, The tightening unit (200) comprises a receiving block (201), a through hole (202) arranged on the receiving block (201), a tightening assembly (203) arranged on the receiving block (201), a supporting assembly (204) arranged on the tightening assembly (203), a force-bearing assembly (205) arranged on the receiving block (201), a transmission assembly (206) arranged on the receiving block (201), and a clamping assembly (207) arranged on the receiving block (201); The telescopic unit (300) comprises a support plate (301), a telescopic plate (302) arranged on the support plate (301), a tightening block (303) arranged on the telescopic plate (302), and a cylinder (304) arranged on the telescopic plate (302) and connected to a receiving block (201).

2. The wind disturbance resistant structure according to claim 1, characterized in that: The tightening assembly (203) comprises a guide rod (203a) arranged on the accommodating block (201), a base plate (203b) arranged on the guide rod (203a), a buckle block (203c) arranged on the base plate (203b), a tensioning spring (203d) arranged on the base plate (203b), and a mounting block (203e) arranged on the tensioning spring (203d).

3. The wind disturbance resistant structure according to claim 2, characterized in that: The support assembly (204) comprises a top plate (204a) arranged on a mounting block (203e), a support plate (204b) arranged on the top plate (204a), a support wheel (204c) arranged on the support plate (204b), and a corresponding groove (204d) arranged on the support wheel (204c).

4. The wind disturbance resistant structure according to claim 3, characterized in that: The force-bearing component (205) comprises a through slot (205a) arranged on the accommodating block (201), a swing block (205b) arranged on the through slot (205a), and a fan blade (205c) arranged on the swing block (205b).

5. The wind disturbance resistant structure according to claim 4, characterized in that: The transmission assembly (206) comprises a rocking rod (206a) arranged on a rocking block (205b), a guide member (206b) arranged on the inner wall of the accommodating block (201), a moving member (206c) arranged on the guide member (206b), and a pressure block (206d) arranged on the inner wall of the accommodating block (201).

6. The wind disturbance resistant structure according to claim 5, characterized in that: The guide member (206b) comprises a sliding rod (206b-1) arranged on the accommodating block (201), and a sliding block (206b-2) arranged on the sliding rod (206b-1).

7. The wind disturbance resistant structure according to claim 6, characterized in that: The moving member (206c) comprises a matching block (206c-1) arranged on a sliding block (206b-2), an arc-shaped groove (206c-2) arranged on the matching block (206c-1), and a contact pressure block (206c-3) arranged on the matching block (206c-1).

8. The wind disturbance resistant structure according to claim 7, characterized in that: The clamping assembly (207) comprises a groove (207a) arranged on the accommodating block (201), an extension groove (207b) arranged on the groove (207a), a connecting rod (207c) arranged on the pressure block (206d), and a transverse plate (207d) arranged on the connecting rod (207c).

9. The wind disturbance resistant structure according to claim 8, characterized in that: The clamping assembly (207) further comprises a vertical rod (207e) arranged on the horizontal plate (207d), a pressure plate (207f) arranged on the vertical rod (207e), and a restoring spring (207g) arranged on the groove (207a) and connected to the horizontal plate (207d).

10. A photovoltaic optimizer, characterized in that: The anti-wind disturbance structure comprises any one of claims 1 to 9, and further comprises: A photovoltaic optimizer (100) comprises a housing (101), a connecting cable (102) arranged on the housing (101), and a mounting frame (103) arranged on the housing (101); The housing (101) includes a DC to DC converter for receiving a variable DC voltage generated by a photovoltaic module and converting it into a fixed DC voltage; The DC to DC converter includes a maximum power point tracking algorithm, which can monitor the output of the photovoltaic module in real time and adjust the operating point to the maximum power point.

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