CN219247024U - Cable assembly and photovoltaic power optimizer - Google Patents

Abstract

The utility model discloses a cable assembly and a photovoltaic power optimizer, wherein the cable assembly comprises a wire, a wiring terminal and a protective sleeve, the wire comprises a main wire body and a connecting end part, the wiring terminal comprises a base part, a plugging part and a wiring part, the wiring part is matched with the connecting end part and fixed by riveting, the protective sleeve comprises a first sleeve part, a second sleeve part and a third sleeve part, the first sleeve part is sleeved on the periphery of the base part, the second sleeve part is sleeved on the periphery of the wiring part after riveting, and the third sleeve part is sleeved on the periphery of the main wire body; the inserting part is at least partially inserted into the PCBA, and is provided with a limiting protrusion which is abutted against the PCBA; the cable assembly extends along the first direction on the PCBA and is arranged along the second direction, and projections of the plug-in parts of the adjacent wiring terminals in the second direction are not overlapped. Through the insulating protective sheath of cover in binding post and junction cover of binding post and wire to and with binding post dislocation arrangement on PCB, can stop the risk that produces electric arc because of the distance is little between the adjacent binding post.

Description

Cable assembly and photovoltaic power optimizer

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to a cable assembly and a photovoltaic power optimizer.

Background

With the development of human beings, global environmental energy has become a primary problem for human beings. The environment continues to deteriorate from over-exploitation of energy, waste and the formation of non-loops of the energy itself. Therefore, the current energy composition needs to be changed urgently, and the active development and use of green renewable energy are important points of our current development.

Solar energy, which is one of renewable energy sources, is currently the best choice for human beings from the standpoint of environmental protection and sustainable utilization, and has a huge development space. The photovoltaic power optimizer is used for solving the problem that the photovoltaic power station has influence on the generated energy due to shadow shielding, inconsistent orientation or component electrical specification difference, realizing the maximum power output of the component and improving the generated energy of the system. The photovoltaic power optimizer is one of the key components in the photovoltaic system assembly.

The cable assembly of the existing photovoltaic power optimizer is usually connected with a circuit board through terminals, and there is a risk that electric arcs are easy to generate due to small distance between the terminals, and even fire losses are caused by the electric arcs.

Accordingly, there is a need for a new cable assembly and photovoltaic power optimizer to address the above-described problems.

Disclosure of Invention

The utility model aims to provide a cable assembly and a photovoltaic power optimizer, which optimize assembly of the cable assembly and reduce the risk of generating an electric arc.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the cable assembly is suitable for being connected to a printed circuit board assembly and comprises a wire and a wiring terminal, wherein the wire comprises a main wire body and a connecting end part fixed at one end of the main wire body, the wiring terminal comprises a base part, a plugging part arranged at one end of the base part and a wiring part arranged at the other end of the base part, and the wiring part is matched with the connecting end part and fixed in a riveting mode;

the cable assembly further comprises a protective sleeve, the protective sleeve comprises a first sleeve part, a second sleeve part and a third sleeve part, the first sleeve part is sleeved on the periphery of the base part, the second sleeve part is sleeved on the periphery of the connecting end part after being riveted by the wiring part, and the third sleeve part is sleeved on the periphery of the main line body;

the plug-in part is plugged in the printed circuit board assembly at least partially, limiting protrusions are arranged on two lateral sides of the plug-in part, and the limiting protrusions are abutted to the printed circuit board assembly.

As a further improved technical scheme of the utility model, the plug-in connection part is bent downwards from one end of the base part, and the wiring part is bent upwards from the other end of the base part.

As a further improved technical scheme of the utility model, the protective sleeve is made of insulating materials and can be shrunk by heating.

In order to achieve the above purpose, the present utility model further adopts the following technical scheme:

a photovoltaic power optimizer comprising a printed circuit board assembly, a housing, and a plurality of cable assemblies as described in any one of the preceding claims;

the printed circuit board assembly is arranged in the shell and comprises a printed circuit board, and the printed circuit board is provided with a splicing groove;

the cable assembly is arranged on the printed circuit board assembly, and the plug-in part of the wiring terminal in the cable assembly is at least partially plugged in the plug-in groove;

the cable components extend along a first direction and are arranged along a second direction, the first direction is perpendicular to the second direction, and projections of the plug-in parts of adjacent wiring terminals on the second direction are not overlapped.

As a further improved technical scheme of the utility model, the shell comprises a press block mounting part, and the press block mounting part comprises an upper arc-shaped part;

the photovoltaic power optimizer further comprises a pressing block arranged on the pressing block installation portion, the pressing block comprises a lower arc-shaped portion, the lower arc-shaped portion corresponds to the upper arc-shaped portion and jointly forms a through hole, and a main body of a wire in the cable assembly extends along the first direction and penetrates through the through hole.

As a further improved technical scheme of the utility model, the printed circuit board is provided with a first surface and a second surface, the limiting protrusion of the plug-in connection part is provided with a first wall and a second wall, and the first wall is abutted against the first surface.

As a further improved technical scheme of the utility model, the shell is provided with an inner bottom wall, the inner bottom wall is provided with a positioning column, the printed circuit board is correspondingly provided with a positioning hole, and the positioning column is matched with the positioning hole.

As a further improved technical scheme of the utility model, the inner bottom wall is also provided with a buckling part, a concave part is arranged at a corresponding position of the printed circuit board, and the buckling part is buckled on the concave part.

As a further improved technical scheme of the utility model, the utility model further comprises an upper cover arranged on the shell, wherein the upper cover is provided with a first installation part, the shell is correspondingly provided with a second installation part, and the first installation part is matched with the second installation part.

As a further improved technical scheme of the utility model, the upper cover is provided with an outer surface and an inner surface, the outer surface is provided with an electrode mark, and the inner surface is provided with a pre-pressing boss.

Compared with the prior art, the cable assembly and the photovoltaic power optimizer have the beneficial effects that:

(1) The wiring terminals and the connection parts of the wiring terminals and the wires are sleeved with insulating protective sleeves, and the wiring terminals are arranged on the printed circuit board in a staggered manner, so that the risk of electric arcs generated between adjacent wiring terminals due to small distances can be avoided, and fire loss caused by the electric arcs is avoided;

(2) The wiring terminal is welded to the printed circuit board through insertion, so that the wiring terminal can be well connected with the printed circuit board assembly, and the cost is reduced;

(3) The plug-in part of the wiring terminal is provided with a limit bulge, so that the welding heights of all the wiring terminals are consistent;

(4) The shell and the printed circuit board assembly are matched and installed through the positioning column, the positioning hole, the buckling part and the concave part, so that the printed circuit board assembly is fixed in the shell, the existing assembly mode is simplified, and the cost is reduced;

(5) The upper cover and the shell are mounted in a matched manner through the first mounting part and the second mounting part, and the upper cover is limited and fixed on the shell, so that the integral tightness of the photovoltaic power optimizer is facilitated;

(6) The electrode mark is arranged on the outer surface of the upper cover, so that the wiring electrode can be distinguished more quickly and conveniently, and the production line production is facilitated;

(7) The internal surface of upper cover is equipped with the pre-compaction boss, and after the product was irritated to glue, can be with the closely pressfitting of encapsulating cladding in the casing, avoid inside pine to be clear, guarantee the leakproofness.

Drawings

FIG. 1 is a schematic diagram of a photovoltaic power optimizer in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the explosive structure of FIG. 1;

FIG. 3 is a schematic view of the structure of an upper cover according to an embodiment of the utility model;

FIG. 4 is a schematic view of the structure of FIG. 3 at another angle;

FIG. 5 is a schematic diagram of an exploded view of a cable assembly according to an embodiment of the utility model;

FIG. 6 is a schematic diagram of a cable assembly soldered to a PCBA in accordance with an embodiment of the present utility model;

FIG. 7 is a schematic front view of FIG. 6;

FIG. 8 is a schematic cross-sectional view of FIG. 7 along the direction A-A;

FIG. 9 is an enlarged schematic view of area A of FIG. 8;

FIG. 10 is a schematic view of the cross-sectional structure of FIG. 7 along the direction B-B;

FIG. 11 is an enlarged schematic view of the area B in FIG. 10;

FIG. 12 is a schematic perspective view of a housing according to an embodiment of the utility model;

FIG. 13 is an enlarged schematic view of the area C in FIG. 12;

FIG. 14 is a schematic view of a PCBA and housing installation construction in accordance with an embodiment of the present utility model;

FIG. 15 is a schematic front view of FIG. 14;

FIG. 16 is a schematic view of the cross-sectional structure of FIG. 14 along the direction C-C;

FIG. 17 is an enlarged schematic view of the area D in FIG. 16;

FIG. 18 is a schematic view of a housing and press block mounting structure according to an embodiment of the present utility model;

FIG. 19 is a schematic front view of FIG. 18;

FIG. 20 is a schematic view of the cross-sectional structure of FIG. 19 along the direction D-D;

FIG. 21 is an enlarged schematic view of the E region in FIG. 20;

FIG. 22 is a schematic view showing the structure of a briquette according to an embodiment of the present utility model;

FIG. 23 is a schematic front view of FIG. 22;

FIG. 24 is a right side schematic view of FIG. 22;

FIG. 25 is a schematic bottom view of FIG. 18;

FIG. 26 is a schematic view of the cross-sectional structure of FIG. 25 along the direction E-E;

FIG. 27 is an enlarged schematic view of the area F in FIG. 26;

FIG. 28 is a schematic view of the structure of FIG. 1 at another angle;

FIG. 29 is a schematic front view of FIG. 28;

FIG. 30 is a schematic cross-sectional view of FIG. 29 along the direction F-F;

FIG. 31 is an enlarged schematic view of the area G in FIG. 30;

fig. 32 is an enlarged schematic view of the area H in fig. 30.

Detailed Description

Exemplary embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description refers to the accompanying drawings, the same numbers in different drawings denote the same or similar elements, unless otherwise specified. What is described in the following exemplary embodiments does not represent all embodiments consistent with the utility model; rather, they are merely examples of apparatus, articles, and/or methods that are consistent with aspects of the utility model as set forth in the claims.

The terminology used in the present utility model is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present utility model. As used in the specification and claims of the present utility model, the singular forms "a," "an," or "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that words such as "first," "second," and the like, used in the description and in the claims of the present utility model, do not denote any order, quantity, or importance, but rather are names used to distinguish one feature from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "front," "rear," "upper," "lower," and the like are used herein for convenience of description and are not limited to a particular location or to a spatial orientation. The word "comprising" or "comprises", and the like, is an open-ended expression, meaning that elements appearing before "comprising" or "including", encompass the elements appearing after "comprising" or "including", and equivalents thereof, and not exclude that elements appearing before "comprising" or "including", may also include other elements.

In the present utility model, if a plurality of the above-mentioned components are present, the meaning of the above-mentioned components is two or more.

Referring to fig. 1 to 32, an embodiment of the utility model discloses a photovoltaic power optimizer, which comprises a cable assembly 10, a printed circuit board assembly 20, a housing 30, an upper cover 40, a pressing block 50, a heat conducting adhesive 60, an insulating paper 70 and a heat dissipating plate 80. The printed circuit board assembly 20 is installed in the housing 30, the cable assembly 10 is connected to the printed circuit board assembly 20, the upper cover 40 is installed on the housing 30, the pressing block 50 is installed on the side edge of the housing 30, the heat conducting glue 60 is arranged below the printed circuit board assembly 20 and is in contact with the printed circuit board assembly 20, the insulating paper 70 is arranged below the heat conducting glue 60 and is in contact with the heat conducting glue 60, and the heat dissipation plate 80 is installed below the housing 30 and is in contact with the insulating paper 70.

The printed circuit board assembly is hereinafter referred to as PCBA (Printed Circuit Board Assembly) and the printed circuit board is hereinafter referred to as PCB (Printed Circuit Board).

Referring to fig. 1 and 2, the overall photovoltaic power optimizer is generally in the shape of a flat cuboid with a housing space therein for accommodating the PCBA20 and other necessary components of the power optimizer. The photovoltaic power optimizer has the advantages that the structure among all the components is compact, the whole volume of the photovoltaic power optimizer is reduced, and the photovoltaic power optimizer is convenient to install.

Referring to fig. 5, the cable assembly 10 includes a wire 11, a terminal 12 and a protective sheath 13. The wire 11 includes a main body 111 and a terminal portion 112 at one end of the main body 111; generally, the joint 112 is integral with the main body 111 and the diameter of the joint 112 is smaller than the diameter of the main body 111, but this is not excluded. The wiring terminal 12 comprises a base 121, a plug-in part 122 arranged at one end of the base 121 and a wiring part 123 arranged at the other end of the base 121, wherein the plug-in part 122 is bent downwards from one end of the base 121, and the wiring part 123 is bent upwards from the other end of the base 121; the connection part 123 is matched with the connection part 112 and is fixed by riveting, specifically, the connection part 112 is arranged in the connection part 123, then the connection part 123 is riveted, and the part of the connection part 123 extending out from the connection part 112 is pressed on the connection part 112 so as to fix the connection part and the connection part relatively; limiting protrusions 1221 are symmetrically arranged on two lateral sides of the plug-in portion 122. The protective sleeve 13 comprises a first sleeve part 131, a second sleeve part 132 and a third sleeve part 133, wherein the first sleeve part 131 is sleeved on the periphery of the base 121, the second sleeve part 132 is sleeved on the periphery of the connecting end 112 after being riveted by the wiring part 123, and the third sleeve part 133 is sleeved on the periphery of the main line body 111; further, the protective sleeve 13 is fixed relative to the lead 11 and the connection terminal 12, the first sleeve portion 131 is attached to the base 121, the second sleeve portion 132 is attached to the riveted connection portion 123, and the third sleeve portion 133 is attached to the main body 111.

Specifically, the protective sleeve 13 is made of an insulating material, and the protective sleeve 13 is heat shrinkable, and is made of an insulating sleeve body with a larger inner diameter than the base 121, the junction 112 riveted by the wire connection portion 123 and the main body 111, or a sheet-shaped insulating material, and is placed on the periphery of the junction between the wire 11 and the wire connection terminal 12, heated to shrink, and attached to the base 121, the riveted junction portion 123 and the main body 111. By sleeving the insulating protective sleeve 13 on the connection terminal 12 and the connection part between the connection terminal 12 and the wire 11, the risk of arc generation due to small distance between adjacent connection terminals 12 can be reduced.

Referring to fig. 6 to 11, the cable assembly 10 is mounted on a PCBA20, the PCBA20 includes a PCB21 and an electronic component 22 mounted on the PCB21, the PCBA 21 has a first surface 21a and a second surface 21b, the PCBA 21 has a through insertion slot 211, and the connection terminal 12 is inserted into the insertion slot 211; the wiring terminal is soldered to the PCB21 by insertion, which not only can be well connected to the PCBA20, but also reduces the cost. The plugging portion 122 is at least partially plugged into the plugging groove 211, the limiting protrusion 1221 has a first wall 1221a and a second wall 1221b, and the first wall 1221a abuts against the first surface 21a; further, the limiting protrusion 1221 has a first wall 1221a, a second wall 1221b, and a third wall 1221c connecting the first wall 1221a and the second wall 1221b, so that, compared to the first wall 1221a and the second wall 1221b, the angle between the third wall 1221c and the first wall 1221a is larger than the angle between the second wall 1221b and the first wall 1221a, and the limiting protrusion 1221 is softer as a whole, and is not easy to damage the PCB21 when the first wall 1221a abuts against the first surface 21a. The positioning of the limit projection 1221 can ensure the consistency of the welding heights of all the terminals 12.

In other embodiments, the insertion portion 122 is not provided with the limit protrusion 1221, and the insertion groove 211 is recessed from the first surface 21a toward the second surface 21b and does not penetrate, so that the bottom end of the insertion portion 122 abuts against the groove bottom surface of the insertion groove 211, and the welding height of the connection terminal 12 can be ensured to be uniform.

Referring to fig. 6 and 7, the cable assembly 10 extends along a first direction, and the cable assemblies 10 are arranged along a second direction on the PCBA20, wherein the first direction is a width direction (W) of the PCBA20, the second direction is a length direction (L) of the PCBA20, and projections of the inserting portions 122 of the adjacent terminals 12 in the second direction are not overlapped, that is, the cable assemblies 10 are arranged in parallel, but are not arranged completely in parallel, so that the terminals 12, particularly the inserting portions 122, are arranged on the PCB21 in a staggered manner, the distance between the inserting portions 122 of the adjacent terminals 12 is increased, and the risk of arc between the adjacent terminals 12 due to small distance can be avoided when the connecting portions are matched with the protective sleeve 13.

Referring to fig. 3 and 4, the upper cover 40 has an outer surface 40a and an inner surface 40b. The outer surface 40a is provided with electrode identifications 42 of "-OUT+", "+IN-", which not only allows for faster and more convenient identification of the wiring electrode, but also facilitates production IN a production line. The inner surface 40b is provided with a pre-pressing boss 43, so that the interior of the shell 30 together with the glue-pouring coating can be tightly pressed, the internal looseness is avoided, and the tightness is ensured. The edges of the outer surface 40a are chamfered, which not only reduces the sharpness of the outer portion, but also makes the whole more attractive.

Further, the edge of the upper cover 40 is provided with an outward convex structure, which is beneficial to the installation and the disassembly of the upper cover 40.

Referring to fig. 30 and 32, the upper cover 40 is fixedly mounted above the housing 30, a first mounting portion 41 is disposed at a connection portion between the inner surface 40b and the housing 30, a second mounting portion 34 is correspondingly disposed on the housing 30, and the first mounting portion 41 is adapted to the second mounting portion 34, so that the upper cover 40 is limited and fixed on the housing 30, which is beneficial to overall tightness. Specifically, the first mounting portion 41 is raised relative to the inner surface 40b, the second mounting portion 34 is correspondingly recessed, or the first mounting portion 41 is recessed relative to the inner surface 40b, the second mounting portion 34 is correspondingly raised, or other mating structures are adopted, so that the two components can be mated and mounted.

Referring to fig. 6 and 12 to 15, the housing 30 has an inner bottom wall 30a and an outer bottom wall 30b, the inner bottom wall 30a is provided with positioning posts 32, the pcbs 21 are correspondingly provided with positioning holes 212, the positioning posts 32 are matched with the positioning holes 212, and the positioning posts 32 pass through the positioning holes 212 when the PCBA20 is mounted in the housing 30.

Referring to fig. 14 to 17, the inner bottom wall 30a of the housing 30 is further provided with a fastening portion 33, the pcb21 is correspondingly provided with a recess 213, the fastening portion 33 is adapted to the recess 213, and the fastening portion 33 is fastened to the recess 213. Specifically, the fastening portion 33 includes an extension portion 331 and a protruding fastening portion 332, the extension portion 331 protruding upward from the inner bottom wall 30a, the protruding fastening portion 332 protruding from a side edge of the extension portion 331 toward the recess portion 213; the protruding buckle portion 332 has a fourth wall 332a and a fifth wall 332b, the fourth wall 332a abutting the first surface 21a of the PCB 21; further, the tab portion 332 has a fourth wall 332a, a fifth wall 332b, and a sixth wall 332c connecting the fourth wall 332a and the fifth wall 332b, so that the angle between the sixth wall 332c and the fourth wall 332a is larger than the angle between the fifth wall 332b and the fourth wall 332a with respect to only the fourth wall 332a and the fifth wall 332b, and the entire tab portion 332 is softer, so that the damage to the PCB21 is less likely to occur when the fourth wall 332a abuts against the first surface 21a. Further, the buckling portion 33 has a certain elasticity, when the PCBA20 is mounted in the housing 30, the concave portion 213 slides down along the fifth wall 332a and presses the buckling portion 33, and when the PCBA20 slides down to be located under the buckling portion 332, the buckling portion 332 is buckled to the first surface 21a. Thus, the housing 30 and the PCBA20 are mounted by the engagement of the fastening portion 33 and the recess portion 213, and the positioning post 32 and the positioning hole 212, and the screw fixing method is canceled, so that the PCBA20 is fixed in the housing 30, thereby simplifying the conventional assembly method and reducing the cost.

Referring to fig. 12, 13, 18, 22 to 27, the housing 30 includes a press block mounting portion 31, the press block mounting portion 31 is adapted to the press block 50, and the press block 50 is mounted to the press block mounting portion 31. Specifically, the press block mounting portion 31 penetrates the housing 30 to form a channel communicating the inside and the outside, the press block mounting portion 31 is provided with an upper arc portion 311, the press block 50 is correspondingly provided with a lower arc portion 51, the upper arc portion 311 and the lower arc portion 51 are adapted and jointly form a through hole 52, and the through hole 52 is used for the lead 11 to pass through. Further, the pressing block 50 further includes a limiting protrusion 53, the pressing block mounting portion 31 is correspondingly provided with a limiting groove 312, and the limiting protrusion 53 is adapted to the limiting groove 312, so that the pressing block 50 can be limited and assembled and guided, and the alignment of the upper arc portion 311 and the lower arc portion 51 is also facilitated. Further, a groove 531 is further provided in the middle of the limit bump 53, and the groove 531 further plays a role of waterproof sealing. An ultrasonic welding line 55 is further arranged at the joint between the upper part of the pressing block 50 and the shell 30 to strengthen the connection between the pressing block 50 and the shell 30, and the pressing block 50 and the shell 30 are further sealed.

Referring to fig. 22 to 27, a glue inlet groove 54 is formed in a surface of the pressing block 50 facing the inside of the housing 30, and the glue inlet groove 54 is recessed inward from the pressing block 50, so that when glue is filled into the housing 30, glue can better flow into a gap at a joint of the pressing block 50 and the housing 30, thereby being beneficial to waterproof sealing. The glue inlet groove 54 is also provided with a further concave buffer part 56, so that certain buffer is formed during glue filling, and glue filling is facilitated.

Referring to fig. 12 and 18, the housing 30 further includes a hollow groove 35 penetrating the inner bottom wall 30a and the outer bottom wall 30 b. The periphery of the hollow groove 35 is provided with a sealing ring groove 36 which is recessed from the outer bottom wall 30b to the inner bottom wall 30a and does not penetrate, and the sealing ring groove 36 is used for installing a sealing ring and has the function of waterproof sealing on products. The seal groove 36 has a water-stop groove 37 formed on the outer periphery thereof, which is recessed from the outer bottom wall 30b toward the inner bottom wall 30a and does not penetrate, and the water-stop groove 37 is spaced from the seal groove 36 by a predetermined distance, and is not connected to the seal groove 36, and the water-stop groove 37 is provided so as to block water drops from flowing into the casing 30.

Referring to fig. 18, 28 and 29, the housing 30 is further provided with a heat dissipating plate mounting groove 38 recessed from the outer bottom wall 30b toward the inner bottom wall 30a and not penetrating, and projections of the hollowed-out groove 35, the seal ring groove 36 and the water stop groove 37 on the heat dissipating plate mounting groove 38 are located within an outer contour of the heat dissipating plate mounting groove 38. Further, the heat radiation plate mounting groove 38 forms a right angle from the extension of the outer bottom wall 30b to the side wall of the case 30, making the mounting of the heat radiation plate 80 more stable. The heat radiation plate 80 is fitted with the heat radiation plate mounting groove 38, and the heat radiation plate 80 includes a substrate 81, a main heat radiation portion 82, and a fitting mounting portion 83; the matching installation part 83 is perpendicular to the base plate 81, and the base plate 81 and the matching installation part 83 are matched with the heat radiation plate installation groove 38, wherein the base plate 81 is attached to the part of the heat radiation plate installation groove 38 on the outer bottom wall 30b, and the matching installation part 83 is attached to the part of the heat radiation plate installation groove 38 on the side wall of the shell 30; further, the heat sink mounting groove 38 is provided with a first mounting hole 381, and the heat sink 80 is correspondingly provided with a second mounting hole 84, and the heat sink 80 is fixedly mounted to the housing 30 by passing through the second mounting hole 84 and the first mounting hole 381 by using a fastener 90. The heat dissipating plate mounting groove 38 is provided with a first mounting hole 381.

Further, the seal ring groove 36 and the water stop groove 37 are recessed from the heat radiation plate mounting groove 38 toward the inner bottom wall 30a of the case 30.

Referring to fig. 28 to 31, at least a portion of the electronic components 22 on the PCBA20 are mounted on the second surface 21b, or at least a portion of the electronic components 22 extend from the first surface 21a to the second surface 21b. The heat conducting glue 60 is located below the PCBA20, at least part of the upper surface of the heat conducting glue 60 is attached to the electronic component 22, the insulating paper 70 is located below the heat conducting glue 60, at least part of the upper surface of the insulating paper 70 is attached to the lower surface of the heat conducting glue 60, that is, the heat conducting glue 60 connects the electronic component 22 and the insulating paper 70, the main heat dissipation part 82 is located below the insulating paper 70, and at least part of the surface of the main heat dissipation part 82 facing the inner side of the housing 30 is attached to the lower surface of the insulating paper 70. The electronic components 22 in the PCBA20 conduct heat to the heat sink 80 through the heat conductive adhesive 60 and the insulating paper 70 in sequence, and then dissipate the heat to the atmosphere through the outer surface of the heat sink 80.

In some embodiments, the photovoltaic power optimizer does not include insulating paper 70, and the main heat sink 82 is directly attached to the electronic component 22 by the heat conductive glue 60, which also enables heat conduction. In the present embodiment, an insulating paper 70 is added between the main heat dissipation portion 82 and the electronic component 22, and the heat-conducting glue 60 is coated on the insulating paper 70; and the size of the insulating paper 70 is larger than that of the hollow groove 35, namely, the insulating paper 70 is placed on the inner bottom wall 30a of the shell 30 and cannot fall from the hollow groove 35, at least part of the insulating paper 70 is attached to the inner bottom wall 30a, so that part of heat conducted to the insulating paper 70 by the electronic component 22 is transferred to the heat dissipation plate 80, the other part of heat is transferred to the shell 30, and part of heat transferred to the shell 30 is dissipated into the atmosphere through the outer surface of the shell 30, and the overall heat dissipation effect of the photovoltaic power optimizer is further enhanced.

Further, the main heat dissipation portion 82 protrudes from the substrate 81 toward the inside of the case 30, a protrusion is formed on a surface of the heat dissipation plate 80 that is attached to the case 30, a recess is formed on a surface of the heat dissipation plate 80 that is outside, and the main heat dissipation portion 82 is recessed inward when the overall appearance of the photovoltaic power optimizer is seen; the main heat dissipation portion 82 is disposed at the corresponding position of the hollow groove 35 of the housing 30 on the heat dissipation plate 80, that is, the heat dissipation plate 80 actively and inwardly concaves to conduct heat with the electronic component 22 through the insulating paper 70 and the heat conductive adhesive 60, instead of providing more or thicker heat conduction components, so that the heat dissipation efficiency is higher, and the waterproof sealing performance is better.

Referring to fig. 28 and 29, after the heat dissipation plate 80 is mounted on the housing 30, the substrate 81 further extends out of the housing 30, and a positioning portion 811 is provided on the extended substrate 81, and the photovoltaic power optimizer is hooked and fixed in the photovoltaic system by the positioning portion 811.

In the assembling process of the photovoltaic power optimizer, firstly, insulating paper 70 is placed on the inner bottom wall 30a of the shell 30 and covers the hollowed-out groove 35, and heat-conducting glue 60 is smeared on the insulating paper 70; then the PCBA20 is arranged in the shell 30, at least part of the electronic element 22 is attached to the heat conducting glue 60, and the cable assembly 10 is spliced on the PCBA20 and welded; mounting the pressing block 50 on the shell 30 to fix the cable assembly 10 so that the lead 11 passes through the through hole 52, and mounting the heat dissipation plate 80 on the bottom of the shell 30 to be fixed by the fastener 90; then, glue is filled into the shell 30 from the upper part of the shell 30 to form a whole of each part in the shell 30, and the glue-filled coating fills the residual space in the whole shell 30 completely; finally, the upper cover 40 is installed, the glue filling process can be intuitively observed, a better glue filling effect is achieved, and the pre-pressing boss 43 on the inner surface 40a of the upper cover 40 can tightly press all parts in the shell 30 together with the glue filling coating, so that the tightness is further ensured.

In summary, compared with the prior art, the cable assembly and the photovoltaic power optimizer of the present utility model have the following advantages:

(1) By sleeving an insulating protective sleeve 13 at the connecting terminal 12 and the connecting position of the connecting terminal 12 and the lead 11 and arranging the connecting terminal 12 on the PCB21 in a staggered way, the risk of arc generation caused by small distance between adjacent connecting terminals 12 can be avoided, and fire loss caused by arc is avoided;

(2) The wiring terminal 12 is welded to the PCB21 through insertion, so that the wiring terminal can be well connected with the PCBA20, and the cost is reduced;

(3) The plug-in part 122 of the wiring terminal 12 is provided with a limit protrusion 1221, so that the welding heights of all the wiring terminals 12 are consistent;

(4) The heat dissipation plate 80 is provided with the concave main heat dissipation part 82, the heating element is attached to the main heat dissipation part 82 through the heat conduction glue 60 and the insulating paper 70, heat is conducted to the heat dissipation plate 80, and the heat dissipation plate 80 dissipates the heat into the atmosphere, so that the heat dissipation efficiency is high, and the waterproof sealing performance is good;

(5) The pressing block 50 arranged on the shell 30 is provided to form the through hole 52 for the lead 11 to pass through, so that the cable assembly 10 can be better installed without friction damage to the cable assembly 10;

(6) The press block mounting part 31 of the shell 30 is provided with the limit groove 312, the press block 50 is correspondingly provided with the limit convex block 53, and the limit convex block 53 is provided with the groove 531, so that the functions of limiting, assembling and guiding are achieved, and the waterproof sealing is achieved;

(7) A glue inlet groove is formed between the pressing block and the shell, and glue can better flow into a gap at the joint of the pressing block and the shell during glue filling, so that waterproof sealing is facilitated;

(8) The shell 30 and the PCBA20 are matched and installed through the positioning column 32 and the positioning hole 212, and the buckling part 33 and the concave part 213, so that the PCBA20 is fixed in the shell 30, the existing assembly mode is simplified, and the cost is reduced;

(9) The upper cover 40 and the shell 30 are mounted in a matched manner through the first mounting part 41 and the second mounting part 34, so that the upper cover 40 is limited and fixed on the shell 30, and the integral tightness of the photovoltaic power optimizer is facilitated;

(10) The outer surface 40a of the upper cover 40 is provided with the electrode mark 42, so that the wiring electrode can be distinguished more quickly and conveniently, and the production line production is facilitated;

(11) The inner surface 40b of the upper cover 40 is provided with a pre-pressing boss 43, after the product is filled with glue, the interior of the shell 30 can be tightly pressed together with the glue filling coating, so that the internal looseness is avoided, and the tightness is ensured.

The above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and it should be understood that the present utility model should be based on those skilled in the art, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the present utility model without departing from the spirit and scope of the present utility model and modifications thereof should be covered by the scope of the claims of the present utility model.

Claims (10)

1. A cable subassembly (10), is suitable for being connected in printed circuit board assembly, cable subassembly (10) include wire (11) and binding post (12), wire (11) include main body (111) and be fixed in tip (112) of main body (111) one end, binding post (12) include basal portion (121), set up in grafting portion (122) of basal portion (121) one end and set up in wiring portion (123) of basal portion (121) other end, wiring portion (123) with tip (112) cooperation and riveting are fixed, its characterized in that:

the cable assembly (10) further comprises a protective sleeve (13), the protective sleeve (13) comprises a first sleeve part (131), a second sleeve part (132) and a third sleeve part (133), the first sleeve part (131) is sleeved on the periphery of the base part (121), the second sleeve part (132) is sleeved on the periphery of the connecting end part (112) after being riveted by the wiring part (123), and the third sleeve part (133) is sleeved on the periphery of the main wire body (111);

the plug-in part (122) is at least partially plugged in the printed circuit board assembly, limiting protrusions (1221) are arranged on two lateral sides of the plug-in part (122), and the limiting protrusions (1221) are abutted against the printed circuit board assembly.

2. The cable assembly (10) of claim 1, wherein: the plug-in part (122) is bent downwards from one end of the base part (121), and the wiring part (123) is bent upwards from the other end of the base part (121).

3. The cable assembly (10) of claim 1, wherein: the protective sleeve (13) is made of an insulating material and can be shrunk by heating.

4. A photovoltaic power optimizer, characterized by: comprising a printed circuit board assembly (20), a housing (30) and a number of cable assemblies (10) according to any of claims 1 to 3;

the printed circuit board assembly (20) is arranged in the shell (30), the printed circuit board assembly (20) comprises a printed circuit board (21), and the printed circuit board (21) is provided with a plug-in groove (211);

the cable assembly (10) is mounted on the printed circuit board assembly (20), and the plug-in part (122) of the wiring terminal (12) in the cable assembly (10) is at least partially plugged in the plug-in groove (211);

the cable assemblies (10) extend along a first direction and are arranged along a second direction, the first direction is perpendicular to the second direction, and projections of inserting portions (122) of adjacent connecting terminals (12) in the second direction are not overlapped.

5. The photovoltaic power optimizer as recited in claim 4, wherein: the housing (30) comprises a press block mounting part (31), and the press block mounting part (31) comprises an upper arc-shaped part (311);

the photovoltaic power optimizer further comprises a pressing block (50) arranged on the pressing block mounting portion (31), the pressing block (50) comprises a lower arc-shaped portion (51), the lower arc-shaped portion (51) corresponds to the upper arc-shaped portion (311) and jointly forms a through hole (52), and a main wire body (111) of the wire (11) in the cable assembly (10) extends along the first direction and penetrates through the through hole (52).

6. The photovoltaic power optimizer as recited in claim 4, wherein: the printed circuit board (21) has a first face (21 a) and a second face (21 b), the limit projection (1221) of the plug-in portion (122) has a first wall (1221 a) and a second wall (1221 b), and the first wall (1221 a) abuts against the first face (21 a).

7. The photovoltaic power optimizer as recited in claim 4, wherein: the shell (30) is provided with an inner bottom wall (30 a), the inner bottom wall (30 a) is provided with a positioning column (32), the printed circuit board (21) is correspondingly provided with a positioning hole (212), and the positioning column (32) is matched with the positioning hole (212).

8. The photovoltaic power optimizer as recited in claim 7, wherein: the inner bottom wall (30 a) is also provided with a buckling part (33), a concave part (213) is arranged at a corresponding position of the printed circuit board (21), and the buckling part (33) is buckled on the concave part (213).

9. The photovoltaic power optimizer as recited in claim 4, wherein: the novel portable electronic device is characterized by further comprising an upper cover (40) arranged on the shell (30), wherein the upper cover (40) is provided with a first installation part (41), the shell (30) is correspondingly provided with a second installation part (34), and the first installation part (41) is matched with the second installation part (34).

10. The photovoltaic power optimizer as claimed in claim 9, wherein: the upper cover (40) is provided with an outer surface (40 a) and an inner surface (40 b), the outer surface (40 a) is provided with an electrode mark (42), and the inner surface (40 b) is provided with a pre-pressing boss (43).

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