Optimizer

Abstract

The utility model relates to an optimizer which comprises a shell, a circuit board module and a clamping assembly, the shell comprises a first shell cover and a second shell cover, the first shell cover and the second shell cover are detachably connected, a mounting cavity is defined between the first shell cover and the second shell cover, and the circuit board module is arranged in the mounting cavity; the clamping assembly and the second shell cover are integrally formed and arranged on the side, away from the first shell cover, of the second shell cover, the clamping assembly is used for being clamped on a keel frame of the photovoltaic module, the side, away from the first shell cover, of the second shell cover is provided with a limiting block, and the limiting block is arranged opposite to the clamping assembly and used for limiting the keel frame when the clamping assembly is clamped on the keel frame. The clamping assembly abuts against the side, away from the clamping assembly, of the keel frame. According to the technical scheme, under the joint cooperation of the clamping assembly and the limiting block, connection between the shell and the keel frame is firmer, installation tools are not needed, and therefore the assembly efficiency of the optimizer can be greatly improved.

Description

Technical Field

[0001] The present disclosure relates to the field of photovoltaic technology, and in particular, to an optimizer. Background Art

[0002] An optimizer, also known as a photovoltaic power optimizer or a module power optimizer, has the main function of optimizing the output power of the photovoltaic array. It monitors and adjusts the voltage and current of the photovoltaic modules in real time, enabling the photovoltaic array to operate in the best state and achieve the maximum output power, thereby improving the power generation efficiency and stability of the solar power generation system.

[0003] In the related art, the optimizer is generally installed on the keel frame of the photovoltaic module through a fixed structure (such as a fixed frame with a locking structure). In the above process, on the one hand, the setting of the fixed structure additionally increases the structural complexity and manufacturing cost of the photovoltaic module. On the other hand, the installation tools are required to realize the assembly between the fixed structure and the optimizer and the keel frame, which reduces the installation efficiency of the optimizer to a certain extent. Utility Model Content

[0004] The purpose of this disclosure is to provide an optimizer to solve the technical problems existing in the related art.

[0005] To achieve the above objectives, the present disclosure provides an optimizer, comprising a housing, a circuit board module, and a clamping assembly, wherein the housing comprises a first housing cover and a second housing cover, the first housing cover and the second housing cover being detachably connected, and an installation cavity is formed between the first housing cover and the second housing cover, and the circuit board module is disposed in the installation cavity;

[0006] The clamping assembly is manufactured as an integral part with the second shell cover and is arranged on a side of the second shell cover away from the first shell cover, and the clamping assembly is used to clamp on the keel frame of the photovoltaic module;

[0007] A limit block is provided on the side of the second shell cover away from the first shell cover. The limit block is arranged opposite to the clamping assembly and is used to abut against the side of the keel frame away from the clamping assembly when the clamping assembly is clamped on the keel frame.

[0008] Optionally, the clamping assembly includes a clamping arm and a clamping portion, the clamping arm is connected between the second shell cover and the clamping portion, the clamping arm is made of a material with elastic or plastic deformation capability, and when subjected to external force, the clamping arm deforms and generates a clamping force, and is clamped on the keel frame through the clamping portion.

[0009] Optionally, the limiting block includes a plurality of limiting portions, and along a direction away from the clamping assembly, the sizes of the plurality of limiting portions in the thickness direction of the second shell cover gradually increase and are formed into a step shape.

[0010] Optionally, the optimizer further includes a mounting block protruding from the shell, and a mounting hole is formed on the mounting block.

[0011] Optionally, the optimizer further comprises a cable, one end of the cable is connected to the circuit board module, and the other end of the cable is used to connect to the photovoltaic module;

[0012] The optimizer further includes an outlet terminal protruding from the shell, the outlet terminal is formed with an outlet hole, the cable is passed through the outlet hole, and the outlet terminal is clamped on the outer circumference of the cable.

[0013] Optionally, the outlet terminal further includes a first clamping protrusion ring, which extends around the circumference of the hole wall of the outlet hole and protrudes from the hole wall of the outlet hole.

[0014] Optionally, the outlet terminal further includes a second clamping protrusion ring, which extends around the circumference of the hole wall of the outlet hole and protrudes from the hole wall of the outlet hole. Along the axial direction of the outlet hole, the second clamping protrusion ring and the first clamping protrusion ring are spaced apart.

[0015] Optionally, the first shell cover is provided with a plurality of card blocks, and the second shell cover is provided with a plurality of card slots, each of the card slots is provided in a one-to-one correspondence with each of the card blocks, and each of the card blocks is used to be engaged in the corresponding card slot;

[0016] A first guide wall is formed on each of the clamping blocks, and a second guide wall is formed on a side of each of the clamping slots close to the first shell cover, and the first guide wall and the second guide wall form a wedge-shaped fit.

[0017] Optionally, the first shell cover has a first fitting wall, the second shell cover has a second fitting wall, the first fitting wall has a first fitting surface and a second fitting surface, the first fitting surface and the second fitting surface are arranged on different planes, the second fitting wall has a third fitting surface and a fourth fitting surface, the third fitting surface is parallel to and opposite to the first fitting surface, the fourth fitting surface is parallel to and opposite to the second fitting surface, the third fitting surface and the first fitting surface are used to fit together when the first shell cover and the second shell cover are buckled together, and the fourth fitting surface and the second fitting surface are used to fit together when the first shell cover and the second shell cover are buckled together.

[0018] Optionally, a first protruding strip is provided on the first fitting wall, and the first protruding strip can be at least partially embedded in the second fitting wall when the first shell cover and the second shell cover are buckled together.

[0019] Through the above technical solution, since the shell of the optimizer includes a first shell cover and a second shell cover that are detachably connected, and the clamping assembly and the second shell cover are manufactured as an integral part, on the one hand, the one-piece design can make the connection between the clamping assembly and the shell more secure, avoiding stability problems caused by loosening or damage of the connector, improving the overall strength, and reducing material costs and processing costs; on the other hand, precisely because the clamping assembly and the second shell cover are manufactured as an integral part, during the assembly process, the clamping assembly can be directly clamped on the keel frame of the photovoltaic module, so that the relative fixation between the optimizer and the keel frame can be achieved, reducing the use of fasteners, and without the aid of disassembly and assembly tools, the optimizer can be quickly assembled, thereby greatly improving the assembly efficiency of the optimizer.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a perspective view of an optimizer provided by an exemplary embodiment of the present disclosure;

[0023] Figure 2 is a cross-sectional view of an optimizer provided by an exemplary embodiment of the present disclosure;

[0024] Figure 3 yes Figure 2 An enlarged view of part A;

[0025] Figure 4 is a cross-sectional view of an optimizer provided by an exemplary embodiment of the present disclosure from another angle;

[0026] Figure 5 yes Figure 4 An enlarged view of part B;

[0027] Figure 6 1 is a schematic diagram of the connection between the optimizer and the keel frame provided by an exemplary embodiment of the present disclosure; wherein the clamping assembly of the optimizer is clamped on the keel frame;

[0028] Figure 7Schematic diagram of the connection between the optimizer and the keel frame provided by an exemplary embodiment of the present disclosure; wherein the mounting block of the optimizer is fixed to the keel frame by fasteners.

[0029] Description of Reference Numerals

[0030] 1-Optimizer; 10-housing; 11-first shell cover; 110-block; 111-first guide wall; 112-first fitting wall; 1120-first raised strip; 1121-first fitting surface; 1122-second fitting surface; 12-second shell cover; 120-slot; 121-second guide wall; 122-second fitting wall; 1221-third fitting surface; 1222-fourth fitting surface; 20-circuit board module; 30-clamping assembly; 31-clamping arm; 32-clamping part; 40-limiting block; 41-limiting part; 50-cable; 60-outlet terminal; 61-first clamping protrusion; 62-second clamping protrusion; 70-mounting block; 71-mounting hole; 72-opening; 100-keel frame. DETAILED DESCRIPTION

[0031] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0032] In the present disclosure, unless otherwise specified, the directional words such as "up", "down", "left", "right", etc. used to indicate the direction or position relationship are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, and a specific directional structure and operation. Therefore, it cannot be understood as a limitation of the present disclosure. The terms "inside" and "outside" refer to the inside and outside of the corresponding structural contour.

[0033] In addition, it should be noted that the terms used, such as "first" and "second", are used to distinguish one element from another and do not have order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements.

[0034] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "connected," "connected," and "installed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; and they may refer to direct connections or indirect connections via an intermediary. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0035] refer to Figures 1 to 7As shown, the present disclosure provides an optimizer 1, including a shell 10, a circuit board module 20 and a clamping assembly 30, the shell 10 includes a first shell cover 11 and a second shell cover 12, the first shell cover 11 and the second shell cover 12 are detachably connected, and an installation cavity is formed between the first shell cover 11 and the second shell cover 12, and the circuit board module 20 is arranged in the installation cavity; the clamping assembly 30 and the second shell cover 12 are manufactured as one piece and are arranged on the side of the second shell cover 12 away from the first shell cover 11, and the clamping assembly 30 is used to clamp on the keel frame 100 of the photovoltaic module; a limit block 40 is provided on the side of the second shell cover 12 away from the first shell cover 11, and the limit block 40 is arranged opposite to the clamping assembly 30, and is used to abut on the side of the keel frame 100 away from the clamping assembly 30 when the clamping assembly 30 is clamped on the keel frame 100.

[0036] Through the above technical solution, since the shell 10 of the optimizer 1 includes a first shell cover 11 and a second shell cover 12 that are detachably connected, and the clamping assembly 30 and the second shell cover 12 are manufactured as an integral part, on the one hand, the one-piece design can make the connection between the clamping assembly 30 and the shell 10 more secure, avoiding stability problems caused by loosening or damage of the connector, improving the overall strength, and reducing material costs and processing costs; on the other hand, precisely because the clamping assembly 30 and the second shell cover 12 are manufactured as an integral part, during the assembly process, the clamping assembly 30 can be directly clamped on the keel frame 100 of the photovoltaic module, so that the optimizer 1 and the keel frame 100 can be relatively fixed, reducing the use of fasteners, and without the aid of disassembly and assembly tools, the optimizer 1 can be quickly assembled, thereby greatly improving the assembly efficiency of the optimizer 1.

[0037] Moreover, when the clamping assembly 30 is clamped on the keel frame 100, one end of the keel frame 100 close to the clamping assembly 30 abuts against the connection between the clamping assembly 30 and the second shell cover 12, while the end of the keel frame 100 away from the clamping assembly 30 abuts against the limit block 40, thereby preventing relative displacement between the keel frame 100 and the second shell cover 12. On the one hand, it prevents the clamping assembly 30 from sliding or slipping on the keel frame 100 when applying a clamping force to the keel frame 100. On the other hand, it also prevents the second shell cover 12 from loosening or falling off due to interference from external forces such as wind, sand, rain, etc.

[0038] It should be noted that, in the present disclosure, there is no limitation on the specific structure and clamping method of the clamping assembly, as long as it can be clamped on the keel frame 100 of the photovoltaic module to achieve the installation and fixation of the optimizer 1. For example, in an exemplary embodiment provided in the present disclosure, Figure 6As shown, the clamping assembly 30 may include a clamping arm 31 and a clamping portion 32. The clamping arm 31 is connected between the second housing 12 and the clamping portion 32. The clamping arm 31 is made of a material with elastic or plastic deformation capabilities. When subjected to an external force, the clamping arm 31 deforms and generates a clamping force, thereby clamping the keel 100 through the clamping portion 32. Specifically, during the assembly of the optimizer 1, the keel 100 is inserted between the second housing 12 and the clamping arm 31. Since the keel 100 has a certain thickness, the clamping arm 31 deforms under the action of the keel 100. At this time, the clamping arm 31 made of a material with elastic or plastic deformation capabilities generates a clamping force, thereby clamping the clamping portion 32 connected to the clamping arm to the keel 100, thereby achieving relative fixation between the second housing 12 and the keel 100, and further achieving relative fixation of the first housing 11, the circuit board module 20, and the keel 100.

[0039] In the present disclosure, the clamping assembly 30 may be made of rubber, plastic, or metal, and the present disclosure does not limit this.

[0040] Since photovoltaic panels of different models and specifications have keels 100 of different sizes, in order to be compatible with keels 100 of various sizes, the limit block 40 can optionally include multiple limit portions 41. The size of the multiple limit portions 41 in the thickness direction of the second shell 12 gradually increases in a step-like shape as it moves away from the clamping assembly 30. During the installation of the optimizer 1 on the keel 100, after the clamping assembly 30 is clamped on one side of the keel 100, the other side of the keel 100 can be pressed against the limit portion 41 that matches its size, thereby limiting the keel 100 of that size.

[0041] In order to further improve the stability between the optimizer 1 and the keel frame 100, in an exemplary embodiment provided by the present disclosure, as Figure 1 、 Figure 2 、 Figure 6 as well as Figure 7 As shown, the optimizer 1 further includes a mounting block 70 protruding from the housing 10, with a mounting hole 71 formed in the mounting block 70. That is, after the second housing cover 12 is clamped to the keel frame 100 by the clamping assembly 30, fasteners can be sequentially inserted through the mounting hole 71 and the keel frame 100 to perform a secondary fixation on the second housing cover 12, thereby improving the connection strength and stability between the second housing cover 12 and the keel frame 100.

[0042] Alternatively, in other embodiments provided by the present disclosure, the optimizer 1 can be directly hung on the keel frame 100, specifically, as Figure 1 、 Figure 2、 Figure 6 as well as Figure 7 As shown, an opening 72 is formed on the mounting hole 71 and is connected to the mounting hole 71. The opening 72 is staggered with the mounting hole 71, and a notch is formed on the edge of the mounting block 70. When hanging the optimizer 1, the hanging portion on the keel frame 100 can be first inserted into the opening 72 through the notch formed on the edge of the mounting block 70. Since the opening 72 is connected to the mounting hole 71, the hanging portion of the keel frame 100 can be moved into the mounting hole 71 by moving the optimizer 1. Moreover, since the opening 72 is staggered with the mounting hole 71, the hanging portion located in the mounting hole 71 is less likely to fall out of the mounting hole 71.

[0043] In order to facilitate the connection between the circuit board module 20 and the photovoltaic assembly, in an exemplary embodiment provided in the present disclosure, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 as well as Figure 7 As shown, the optimizer 1 may further include a cable 50, one end of which is connected to the circuit board module 20, and the other end of which is used to connect to the photovoltaic module. The optimizer 1 also includes an outlet terminal 60 provided protruding from the housing 10. The outlet terminal 60 is formed with an outlet hole, and the cable 50 is passed through the outlet hole. The outlet terminal 60 is clamped to the outer circumference of the cable 50. The outlet terminal 60 is clamped to the outer circumference of the cable 50, which can fix the cable 50 in the outlet hole, thereby preventing the cable 50 from loosening or falling off from the circuit board module 20 when subjected to external forces.

[0044] Alternatively, in another exemplary embodiment provided by the present disclosure, the above-mentioned optimizer 1 can also be connected to the photovoltaic component in a wireless manner. For example, the optimizer 1 can also include a wireless communication module (such as a Bluetooth module, a 5G network module) electrically connected to the circuit board module 20, and the signal connection with the photovoltaic component can be achieved through the wireless communication module.

[0045] In order to further improve the fixing effect of the outlet terminal 60 on the cable 50, optionally, as Figure 2 、 Figure 3 As shown, the outlet terminal 60 further includes a first clamping protrusion 61, which extends around the circumference of the outlet hole and protrudes from the hole wall. The first clamping protrusion 61 can be clamped around the outer periphery of the cable 50 along the circumference of the cable 50. On the one hand, it can improve the fixing effect of the cable 50, and on the other hand, it can prevent external factors such as dust and moisture from intruding into the interior of the housing 10, thereby extending the service life of the optimizer 1.

[0046] In the present disclosure, there may be a plurality of the first clamping protrusions 61 , and the plurality of first clamping protrusions 61 are spaced apart along the axial direction of the wire outlet hole to enhance the clamping and sealing effects.

[0047] Specifically, in an exemplary embodiment provided in the present disclosure, Figure 3 As shown, there may be three first clamping protruding rings 61 .

[0048] Furthermore, if Figure 2 、 Figure 3 As shown, the outlet terminal 60 may further include a second clamping protrusion 62, which extends around the circumference of the hole wall of the outlet hole and protrudes from the hole wall of the outlet hole. Along the axial direction of the outlet hole, the second clamping protrusion 62 and the first clamping protrusion 61 are spaced apart. Since the first clamping protrusion 61 and the second clamping protrusion 62 are spaced apart, when the first clamping protrusion 61 and the second clamping protrusion 62 are respectively clamped on the outer circumference of the cable 50, a sealing area is formed between the first clamping protrusion 61 and the second clamping protrusion 62. Even if external dust and water vapor break through the first clamping protrusion 61 and enter the sealing area, the second clamping protrusion 62 can still independently perform a sealing function, thereby improving the waterproof and dustproof fault tolerance of the optimizer 1.

[0049] The present disclosure does not limit the detachable connection manner of the first shell cover 11 and the second shell cover 12. For example, the first shell cover 11 and the second shell cover 12 can be connected by fasteners. Alternatively, in another exemplary embodiment provided by the present disclosure, the first shell cover 11 and the second shell cover 12 can also be connected by a snap-fitting manner. Specifically, Figure 4 、 Figure 5 As shown, the first housing cover 11 is provided with a plurality of clamping blocks 110, and the second housing cover 12 is provided with a plurality of clamping slots 120. Each clamping slot 120 is provided in a one-to-one correspondence with each clamping block 110, and each clamping block 110 is used to be clamped into its corresponding clamping slot 120. Connecting the first housing cover 11 and the second housing cover 12 by clamping does not require complex tools or equipment, and can be completed with simple operations, thereby greatly saving time and labor costs. In addition, compared with traditional connection methods such as welding and bolting, clamping is more efficient and can quickly complete the assembly operation.

[0050] In order to facilitate the connection between the card block 110 and the card slot 120, as shown in FIG. Figure 4 、 Figure 5As shown, a first guide wall 111 may be formed on each block 110 , and a second guide wall 121 may be formed on a side of each slot 120 close to the first shell cover 11 , and the first guide wall 111 and the second guide wall 121 form a wedge fit. When the first and second housing covers 11 and 12 are assembled, the first guide wall 111 formed on the block 110 slides into contact with the second guide wall 121 formed on one side of the slot 120, thereby guiding the relative movement between the first and second housing covers 11 and 12. Moreover, as the first and second housing covers 11 and 12 are gradually engaged, the first and second guide walls 111 and 121 are deformed by the pressure of each other until the block 110 slides into the corresponding slot 120. At this time, the block 110 is locked in the slot 120 and then recovers its deformation, thereby being more tightly locked in the slot 120. In this way, even if the first and second housing covers 11 and 12 are subjected to external force, the block 110 is not easy to fall out of the slot 120, thereby improving the stability and firmness of the connection between the first and second housing covers 11 and 12.

[0051] In order to improve the sealing performance between the first box cover and the second box cover, optionally, as Figure 4 、 Figure 5 As shown, the first shell cover 11 has a first fitting wall 112, the second shell cover 12 has a second fitting wall 122, the first fitting wall 112 has a first fitting surface 1121 and a second fitting surface 1122, the first fitting surface 1121 and the second fitting surface 1122 are arranged on different surfaces, the second fitting wall 122 has a third fitting surface 1221 and a fourth fitting surface 1222, the third fitting surface 1221 is parallel to and opposite to the first fitting surface 1121, the fourth fitting surface 1222 is parallel to and opposite to the second fitting surface 1122, the third fitting surface 1221 and the first fitting surface 1121 are used to fit together when the first shell cover 11 and the second shell cover 12 are buckled together, and the fourth fitting surface 1222 and the second fitting surface 1122 are used to fit together when the first shell cover 11 and the second shell cover 12 are buckled together. That is to say, the first fitting surface 1121 and the third fitting surface 1221 can form an effective seal, and the second fitting surface 1122 and the fourth fitting surface 1222 can form a second effective seal. Under the dual effects of the first seal and the second seal, the sealing performance of the above-mentioned shell 10 can be further improved, and the failure of the seal to cause external dust and water vapor to enter the shell 10 is reduced or avoided, thereby affecting the performance of the circuit board module 20 in the shell 10.

[0052] In this disclosure, Figure 4 、 Figure 5As shown, a first protruding strip 1120 is provided on the first fitting wall 112 , and the first protruding strip 1120 can be at least partially embedded in the second fitting wall 122 when the first shell cover 11 and the second shell cover 12 are buckled together. The first raised strip 1120 can be at least partially embedded in the second fitting wall 122 when the first shell cover 11 and the second shell cover 12 are buckled together. That is to say, the setting of the first raised strip 1120 can seal the contact surface between the first fitting wall 112 and the second fitting wall 122, avoiding the situation where the first fitting wall 112 and the second fitting wall 122 cannot be tightly fitted due to the uneven surface of the first fitting wall 112 and / or the second fitting wall 122, further improving the sealing performance between the first fitting wall 112 and the second fitting wall 122, and the setting of the first raised strip 1120 can also lower the flatness requirements of the first fitting wall 112 and the second fitting wall 122, thereby reducing the processing difficulty and processing cost of the first fitting wall 112 and the second fitting wall 122.

[0053] It should be noted that, with respect to the above-mentioned first raised strip 1120 being able to be at least partially embedded in the second fitting wall 122 when the first shell cover 11 and the second shell cover 12 are buckled together, the above-mentioned second fitting wall 122 can be made of flexible materials such as rubber, polyurethane and the like, so that the first raised strip 1120 can be embedded in the second fitting wall 122 when it is pressed against the second fitting wall 122.

[0054] Alternatively, in another embodiment provided in the present disclosure, the above-mentioned first raised strip 1120 can also be made of flexible materials such as rubber, polyurethane, etc., so that the first raised strip 1120 is deformed when under pressure, and then adheres to the second fitting wall 122, thereby increasing the contact area between the second fitting wall 122 and achieving the purpose of improving the sealing performance.

[0055] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0057] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An optimizer, characterized in that: The device comprises a housing, a circuit board module, and a clamping assembly. The housing comprises a first housing cover and a second housing cover. The first housing cover and the second housing cover are detachably connected. A mounting cavity is formed between the first housing cover and the second housing cover. The circuit board module is disposed in the mounting cavity. The clamping assembly is manufactured as an integral part with the second shell cover and is arranged on a side of the second shell cover away from the first shell cover, and the clamping assembly is used to clamp on the keel frame of the photovoltaic module; A limit block is provided on the side of the second shell cover away from the first shell cover. The limit block is arranged opposite to the clamping assembly and is used to abut against the side of the keel frame away from the clamping assembly when the clamping assembly is clamped on the keel frame.

2. The optimizer according to claim 1, wherein: The clamping assembly includes a clamping arm and a clamping portion. The clamping arm is connected between the second shell cover and the clamping portion. The clamping arm is made of a material with elastic or plastic deformation capability. When subjected to external force, the clamping arm deforms and generates a clamping force, and is clamped on the keel frame through the clamping portion.

3. The optimizer according to claim 1, wherein: The limiting block includes a plurality of limiting portions. Along a direction away from the clamping assembly, the sizes of the plurality of limiting portions in a thickness direction of the second shell cover gradually increase and are formed in a step shape.

4. The optimizer according to claim 1, wherein: The optimizer further includes a mounting block protruding from the housing, and a mounting hole is formed on the mounting block.

5. The optimizer according to any one of claims 1 to 4, characterized in that The optimizer further includes a cable, one end of the cable is connected to the circuit board module, and the other end of the cable is used to connect to the photovoltaic module; The optimizer further includes an outlet terminal protruding from the shell, the outlet terminal is formed with an outlet hole, the cable is passed through the outlet hole, and the outlet terminal is clamped on the outer circumference of the cable.

6. The optimizer according to claim 5, characterized in that The outlet terminal further includes a first clamping protrusion ring, which extends around the circumference of the hole wall of the outlet hole and protrudes from the hole wall of the outlet hole.

7. The optimizer according to claim 6, characterized in that The outlet terminal also includes a second clamping protrusion ring, which extends around the circumference of the hole wall of the outlet hole and protrudes from the hole wall of the outlet hole. Along the axial direction of the outlet hole, the second clamping protrusion ring and the first clamping protrusion ring are spaced apart.

8. The optimizer according to any one of claims 1 to 4, characterized in that: The first shell cover is provided with a plurality of card blocks, and the second shell cover is provided with a plurality of card slots, each of the card slots is provided in a one-to-one correspondence with each of the card blocks, and each of the card blocks is used to be clamped in the corresponding card slot; A first guide wall is formed on each of the clamping blocks, and a second guide wall is formed on a side of each of the clamping slots close to the first shell cover, and the first guide wall and the second guide wall form a wedge-shaped fit.

9. The optimizer according to any one of claims 1 to 4, characterized in that: The first shell cover has a first fitting wall, the second shell cover has a second fitting wall, the first fitting wall has a first fitting surface and a second fitting surface, the first fitting surface and the second fitting surface are arranged on different planes, the second fitting wall has a third fitting surface and a fourth fitting surface, the third fitting surface is parallel to and opposite to the first fitting surface, the fourth fitting surface is parallel to and opposite to the second fitting surface, the third fitting surface and the first fitting surface are used to fit together when the first shell cover and the second shell cover are buckled together, and the fourth fitting surface and the second fitting surface are used to fit together when the first shell cover and the second shell cover are buckled together.

10. The optimizer according to claim 9, characterized in that A first protruding strip is provided on the first fitting wall, and the first protruding strip can be at least partially embedded in the second fitting wall when the first shell cover and the second shell cover are buckled together.

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