CN221102100U - Photovoltaic element, photovoltaic junction box and photovoltaic module - Google Patents

Abstract

The application discloses a photovoltaic element, a photovoltaic junction box and a photovoltaic module, wherein the photovoltaic element comprises: the packaging module, the pins and the plug-in structure; the pins are connected to the packaging module, the plug-in structure is connected with the pins and is provided with plug-in parts, and the plug-in parts are used for being plugged with the bus bars. Through set up grafting structure on the pin to with the busbar in the photovoltaic module with grafting portion grafting cooperation of grafting structure, can realize the connection of busbar and photovoltaic component, easy operation is swift, can simplify the photovoltaic terminal box and install and use the operation. And compared with the traditional photovoltaic element, the heat conduction effect of the pins can be improved because the holes are not required to be formed in the pins, and the heat dissipation of the photovoltaic element is facilitated.

Description

Photovoltaic element, photovoltaic junction box and photovoltaic module

Technical Field

The application belongs to the technical field of photovoltaics, and particularly relates to a photovoltaic element, a photovoltaic junction box and a photovoltaic module.

Background

The photovoltaic cells convert solar energy into electric energy through a photovoltaic conversion effect, and the photovoltaic module is formed by mutually connecting and packaging a plurality of photovoltaic cells and is a core component in a photovoltaic power generation system. The photovoltaic module junction box is a key connecting device for forming a power generation system by the photovoltaic module, photovoltaic elements are arranged in the junction box and are respectively connected with bus bars and power transmission lines led out from the photovoltaic module.

In the related art, in order to realize connection between a photovoltaic element and a bus bar, a connection hole is usually formed in a pin of the photovoltaic element, the bus bar led out of the photovoltaic module passes through the connection hole and then is bent to form a bending part, and the bending part is welded and fixed with the pin, so that connection between the photovoltaic element and the bus bar is realized.

However, with the photovoltaic element in the related art, when the photovoltaic element is connected with the bus bar, operations such as perforation, bending, welding and the like are required, the operations are more complex, and the heat conduction in the pins can be affected by the arrangement of the connecting holes in the pins, which is not beneficial to heat dissipation of the photovoltaic element.

Disclosure of utility model

The application aims to provide a photovoltaic element, a photovoltaic junction box and a photovoltaic module, which can solve the problems that the photovoltaic element in the related technology is adopted, the operation is complex during installation and use, and the heat dissipation of the photovoltaic element is not facilitated due to the fact that the connecting holes are formed in the pins.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, the present application proposes a photovoltaic element comprising: the packaging module, the pins and the plug-in structure;

the pin is connected to the packaging module, the plug-in structure is connected with the pin, the plug-in structure is provided with a plug-in part, and the plug-in part is used for being plugged with the bus bar.

Optionally, the plugging structure includes: the first plug connector and the second plug connector are respectively connected to the pins, and at least part of the first plug connector and the second plug connector are in contact to form the plug part.

Optionally, the first plug connector and the second plug connector each comprise a fixing piece and a clamping piece; the fixing piece is connected with the pin, the clamping piece is connected with the fixing piece, and a first gap is arranged between the clamping piece and the fixing piece; the clamping piece in the first plug connector and the clamping piece in the second plug connector are oppositely arranged and at least partially contacted to form the plug connector.

Optionally, the clamping piece in the first connector is a first clamping piece, the clamping piece in the second connector is a second clamping piece, the first clamping piece and the second clamping piece are in contact with each other at one side close to the pin, and the first clamping piece and the second clamping piece form a slot at one side far away from the pin.

Optionally, the fixing piece is provided with a first glue hole, and the first glue hole is communicated with the first gap and is used for injecting pouring sealant into the first gap.

Optionally, the photovoltaic element further includes a plurality of cooling fins, one end of each cooling fin is connected with the corresponding pin, the other end of each cooling fin extends towards a direction away from the corresponding pin, and the plurality of cooling fins are arranged at intervals; and/or the packaging module is used for wrapping the bypass circuit for protecting the photovoltaic module.

In a second aspect, the present application provides a photovoltaic junction box comprising: a junction box body and any of the photovoltaic elements described above;

The junction box main body is internally provided with a containing cavity, and the photovoltaic element is arranged in the containing cavity; the junction box body is provided with a jack, and the jack is used for allowing the bus bar to pass through so as to be spliced with the splicing part.

Optionally, a positioning column is further arranged in the accommodating cavity, a positioning hole is formed in the pin, and the positioning column is in positioning connection with the positioning hole.

Optionally, a groove is formed in one side, away from the accommodating cavity, of the junction box main body, a second glue hole is formed in the junction box main body, and the accommodating cavity is communicated with the groove through the second glue hole.

Optionally, the second glue holes are provided in plurality, and the second glue holes are located below the packaging module or the pins.

Optionally, the junction box main body comprises a box body and a box cover, wherein a containing groove is formed in the box body, the box cover covers the notch of the containing groove, the containing cavity is formed by enclosing the box cover and the box body, and the jack is formed in the bottom of the containing groove.

Optionally, the junction box main body comprises a box body and a box cover, wherein a containing groove is formed in the box body, the box cover is covered at the notch of the containing groove, the containing cavity is formed by enclosing the box cover and the box body, and the jack is formed in the box cover.

Optionally, the bottom of the accommodating groove is further provided with a first protruding portion, the first protruding portion extends from the bottom of the accommodating groove towards the direction of the box cover, the packaging module is in contact with the first protruding portion, and a second gap is reserved between the packaging module and the bottom of the accommodating groove.

Optionally, the bottom of the accommodating groove is further provided with a second protruding portion, the second protruding portion extends from the bottom of the accommodating groove towards the direction of the box cover, the pin contacts with the second protruding portion, and a third gap is reserved between the pin and the bottom of the accommodating groove.

Optionally, a glue overflow port is arranged at the circumferential edge of the pin; and/or the jack is positioned on a portion of the side wall of the junction box body.

Optionally, the second glue hole is located on a portion of a side wall of the junction box body.

Optionally, a third glue hole is formed in the bottom of the accommodating groove.

Optionally, a first protruding part and a second protruding part are further arranged at the bottom of the accommodating groove, and the first protruding part and the second protruding part extend from the bottom of the accommodating groove towards the direction of the box cover; the first protruding part and/or the second protruding part limit at least part of the plug-in structure; or the first protruding part and the second protruding part are jointly matched with the plug-in structure in a plug-in manner.

In a third aspect, the present application provides a photovoltaic module, including a bus bar, and any one of the above photovoltaic elements, or any one of the above photovoltaic junction boxes, where the bus bar of the photovoltaic module is connected to the photovoltaic element.

In the embodiment of the application, the pins of the photovoltaic element are provided with the plug-in structure, the plug-in structure is provided with the plug-in part, and when the photovoltaic element is applied to the photovoltaic module, the bus bar in the photovoltaic module is in plug-in fit with the plug-in part of the plug-in structure, so that the connection between the bus bar and the photovoltaic element can be realized, the operation is simple and quick, and the simplification of the installation operation steps of the photovoltaic junction box is facilitated. And compared with the traditional photovoltaic element, the heat conduction effect of the pins can be improved because the holes are not required to be formed in the pins, and the heat dissipation of the photovoltaic element is facilitated.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic top view of a photovoltaic element according to an embodiment of the present application;

FIG. 2 is a schematic top view of a photovoltaic element of the related art;

FIG. 3 is a front view of a photovoltaic element according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a front view of another photovoltaic element according to an embodiment of the present application;

FIG. 5 is a schematic view of a plug structure according to an embodiment of the present application;

FIG. 6 is a schematic left-hand view of a photovoltaic element according to an embodiment of the present application;

FIG. 7 is a schematic left-hand view of another photovoltaic element according to an embodiment of the present application;

FIG. 8 is a schematic top view of yet another photovoltaic element according to an embodiment of the present application;

Fig. 9 is a schematic front view of yet another photovoltaic element according to an embodiment of the present application;

FIG. 10 is a schematic top view of a photovoltaic junction box according to an embodiment of the present application;

FIG. 11 is a schematic front view of a photovoltaic junction box according to an embodiment of the present application;

FIG. 12 is a schematic bottom view of a photovoltaic junction box according to an embodiment of the present application;

FIG. 13 is a schematic view of the structure of a case according to an embodiment of the present application;

Fig. 14 is a schematic view of a structure in which a photovoltaic element is mounted in a case according to an embodiment of the present application.

FIG. 15 is a schematic view of another cartridge according to an embodiment of the present application;

fig. 16 is a schematic bottom view of another photovoltaic junction box according to an embodiment of the present application.

Reference numerals:

10: a photovoltaic element; 100: packaging the module; 110: pins; 110a: a mounting hole; 111: positioning holes; 112: a glue overflow port; 120: a plug-in structure; 121: a plug-in part; 121a: a slot; 120a: a first plug member; 120b: a second plug member; 122: a fixing piece; 122a: a first glue hole; 123: a clamping piece; 124: a first gap; 130: a heat sink; 20: a photovoltaic junction box; 200: a case body; 200a: a receiving groove; 201: a jack; 202: positioning columns; 203: a groove; 204: a second glue hole; 205: a first boss; 205a: a second gap; 206: a second protruding portion; 206a: a third gap; 207: a support table; 208: a third glue hole; 209: a portion of the sidewall; 210: a box cover; 220: and (5) conducting wires.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The features of the application "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The photovoltaic element, the photovoltaic junction box and the photovoltaic module provided by the embodiment of the application are described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.

As shown in fig. 1 and 3, a photovoltaic element 10 according to some embodiments of the present application, the photovoltaic element 10 includes a package module 100, pins 110, and a socket structure 120; the pins 110 are connected to the package module 100, the socket structure 120 is connected to the pins 110, and the socket structure 120 is provided with a socket portion 121, where the socket portion 121 is used for being plugged with a bus bar.

In the embodiment of the application, the pins 110 of the photovoltaic element 10 are provided with the plug-in structures 120, the plug-in structures 120 are provided with the plug-in parts 121, and when the photovoltaic element 10 is applied to a photovoltaic module, the connection between the bus bars in the photovoltaic module and the photovoltaic element 10 can be realized by plug-in matching between the bus bars in the photovoltaic module and the plug-in parts 121 of the plug-in structures 120, so that the operation is simple and quick, and the installation and use operations can be simplified. In addition, compared with the conventional photovoltaic element 10, the heat conduction effect of the pins 110 can be improved because the holes in the pins 110 are not needed, so that the heat dissipation of the photovoltaic element 10 is facilitated.

In particular applications, a photovoltaic module generally includes a battery cell that converts solar energy into electric energy under a photoelectric conversion effect, and further generates a current in the battery cell, and a bus bar connected to the battery cell, and the current is collected by the bus bar and output to the outside of the photovoltaic module. The photovoltaic junction box 20 is arranged in the photovoltaic module, and the photovoltaic junction box 20 can achieve connection and protection effects between the photovoltaic module and other components.

Specifically, the photovoltaic element 10 in the embodiment of the present application may be applied to the photovoltaic junction box 20 of the photovoltaic module, where the photovoltaic element 10 includes the package module 100 and the pins 110, and the package module 100 is electrically connected to the bus bars in the photovoltaic module through the pins 110. Furthermore, the pin 110 is provided with a plugging structure 120, and the plugging structure 120 is provided with a plugging portion 121, so that when in use, a bus bar can be inserted into the plugging portion 121, thereby realizing connection between the bus bar and the pin 110.

The package module 100 may be made of a common epoxy molding compound, the outer contour of the package module 100 may be set to be a cuboid, a cube, a polygon, or other irregularly shaped structures, the package module 100 is used for wrapping a bypass circuit for protecting the photovoltaic module, so as to protect the bypass circuit from external environment, for example, resist external water vapor, vibration, thermal diffusion, physical impact, etc., so that the bypass circuit is electrically insulated from the external environment, and is used for protecting the photovoltaic module, preventing the photovoltaic module from occurrence of hot spots, etc., and the bypass circuit of the photovoltaic module belongs to the prior art.

The photovoltaic element 10 may include two pins 110, where the two pins 110 are separately disposed on two sides of the package module 100, each pin 110 is provided with a socket structure 120, and the socket structures 120 on the two pins 110 are located on the same side.

Illustratively, the plugging portion 121 in the plugging structure 120 may be configured as a socket or a slot 121a, and in use, a bus bar led out of the photovoltaic module may be inserted into the socket or slot 121a to achieve a plugging fit of the bus bar with the plugging structure 120.

Of course, the plugging portion 121 of the plugging structure 120 may be configured as other structures, and the specific structure of the plugging portion 121 may be adapted to the structure of the bus bar in the photovoltaic module, which is not limited in the embodiment of the present application.

It should be noted that, the plugging structure 120 may have conductivity, and when the bus bar is plugged into the plugging structure 120, the bus bar may be electrically connected to the pin 110 through the plugging structure 120.

It will be appreciated that, as shown in fig. 2, in the conventional photovoltaic element 10, mounting holes 110a are generally formed in the leads 110, so that bus bars led out of the photovoltaic module are bent after passing through the mounting holes, and the bent portions of the bus bars are welded and fixed to the leads 110. However, with the conventional photovoltaic element 10, not only is the assembly operation complicated, but also the post-maintenance is not facilitated after the bus bar and the pins 110 are welded and fixed. In addition, the presence of the mounting holes prevents the heat generated by the package module 100 from being conducted through the pins 110, which is also detrimental to the overall heat dissipation of the photovoltaic element 10.

In the photovoltaic element 10 of the embodiment of the application, the pin 110 is provided with the plug-in structure 120, and the bus bar is plugged into the plug-in structure 120, so that the photovoltaic element 10 and the bus bar can be quickly connected, and the operation is simple and convenient. Meanwhile, the influence on the heat conduction of the pins 110 can be effectively avoided, and the overall heat dissipation effect of the photovoltaic element 10 can be improved.

Alternatively, as shown in fig. 3 and 5, the plug structure 120 includes a first plug 120a and a second plug 120b, the first plug 120a and the second plug 120b are respectively connected to the pin 110, and the first plug 120a and the second plug 120b at least partially contact to form the plug portion 121.

In the embodiment of the present application, the first connector 120a and the second connector 120b are at least partially contacted to form the connector part 121, so that the bus bar can be inserted between the first connector 120a and the second connector 120b, and the bus bar is clamped and fixed by using the clamping action between the first connector 120a and the second connector 120 b.

The first connector 120a and the second connector 120b are connected to the same side of the pin 110, and the first connector 120a and the second connector 120b may have conductivity, and may form a clamping fixation for the bus bar through the cooperation of the first connector 120a and the second connector 120 b. Meanwhile, when the bus bar is inserted between the first and second socket connectors 120a and 120b, the bus bar may be electrically connected with the pins 110 through the first and second socket connectors 120a and 120 b.

In some embodiments, the first connector 120a and the second connector 120b may be made of a metal material such as copper, steel, iron, aluminum, etc. Alternatively, the first connector 120a and the second connector 120b may be made of the same material as the pin 110 to improve electrical conductivity between the first connector 120a and the second connector 120b and the pin 110.

Of course, the first connector 120a and the second connector 120b may be made of other materials, and those skilled in the art may set the first connector and the second connector according to actual needs, which is not limited in the embodiment of the present application.

Alternatively, as shown in fig. 5, each of the first plug 120a and the second plug 120b includes a fixing piece 122 and a clamping piece 123, the fixing piece 122 is connected to the pin 110, the clamping piece 123 is connected to the fixing piece 122, and a first gap 124 is provided between the clamping piece 123 and the fixing piece 122; the locking tab 123 in the first connector 120a is disposed opposite to and at least partially contacts the locking tab 123 in the second connector 120b to form the plug portion 121.

In the embodiment of the present application, the locking tab 123 in the first connector 120a is at least partially contacted with the locking tab 123 in the second connector 120b to form the inserting portion 121, and the bus bar may be inserted between the two locking tabs 123. Meanwhile, a first gap 124 is provided between the clamping piece 123 and the corresponding fixing piece 122, so that a reserved space is provided for deformation of the clamping piece 123, and when the bus bar is inserted between the two clamping pieces 123, the clamping piece 123 can deform to a certain extent, so that a clamping effect is formed on the bus bar, and connection stability of the inserting structure 120 and the bus bar is improved. It should be noted that, the first gap 124 may be at least understood that at least a part of a space is formed between the fastening piece 123 and the fixing piece 122, where the space may be large or small or variable, and the space may be closed or not, so that a good reserved space may be provided for deformation of the fastening piece 123.

Specifically, the plugging structure 120 may include two fixing pieces 122 and two clamping pieces 123, where the two fixing pieces 122 are connected to the pin 110, the two clamping pieces 123 are disposed between the two fixing pieces 122, and then one clamping piece 123 is connected to a corresponding one of the fixing pieces 122 to form a first plugging member 120a, and the other clamping piece 123 is connected to a corresponding other fixing piece 122 to form a second plugging member 120b. In some embodiments, both fixing pieces 122 and both locking pieces 123 may be connected to the pin 110 through a connecting piece (not shown), and more specifically, the first connector 120a and the second connector 120b are connected to the pin 110 through one connecting piece.

In some embodiments, the fixing piece 122 and the fastening piece 123 may be formed integrally or formed separately. The fixing piece 122 and the clamping piece 123 are made of conductive materials, and the materials of the fixing piece 122 and the clamping piece 123 can be the same or different.

In some embodiments, as shown in fig. 3 and 4, the surfaces of the two fastening pieces 123 that are close to each other may be provided as a plane, a curved surface, or a combination of a plane and a curved surface. Of course, the engaging piece 123 may have other structures, which are not limited in the embodiment of the present application.

Alternatively, as shown in fig. 5, the locking tab 123 in the first connector 120a is a first locking tab, the locking tab 123 in the second connector 120b is a second locking tab, the first locking tab and the second locking tab are in contact with each other on a side close to the pin 110, and the first locking tab and the second locking tab form a slot 121a on a side far from the pin 110.

In the embodiment of the application, the slot 121a is formed on the side far from the pin 110 by arranging the first clamping piece and the second clamping piece so as to facilitate the plugging operation of the bus bar, and meanwhile, the first clamping piece and the second clamping piece are contacted with each other on the side close to the pin 110 so as to form a clamping effect on the inserted bus bar, thereby improving the connection stability.

In some embodiments, the slot 121a may be a V-shaped slot, a U-shaped slot, or other irregularly shaped slots, and when the bus bar is plugged, the end of the bus bar is inserted from the slot 121a, and the slot 121a may be used to guide and limit the bus bar, so as to improve the accuracy of the plugging operation.

Alternatively, as shown in fig. 5 to 7, the fixing piece 122 is provided with a first glue hole 122a, and the first glue hole 122a communicates with the first gap 124 for injecting the potting adhesive into the first gap 124.

In the embodiment of the present application, the first glue hole 122a is provided on the fixing piece 122, so that when the whole photovoltaic element 10 is encapsulated by the pouring sealant, the pouring sealant is conveniently injected into the first gap 124 through the first glue hole 122a, and the encapsulation effect on the plugging structure 120 is achieved.

It can be appreciated that, by providing the first gap 124 between the clamping piece 123 and the fixing piece 122, a reserved gap is provided for deformation of the clamping piece 123, so as to facilitate plugging operation of the bus bar. Further, by providing the first glue hole 122a on the fixing piece 122, after the plugging of the bus bar is completed, pouring sealant can be injected into the first gap 124 through the first glue hole 122a to fill the first gap 124, so that the deformation of the limiting clamping piece 123 can be reduced after the curing, and the clamping piece 123 can keep continuous clamping of the bus bar.

In some embodiments, as shown in fig. 6 and 7, a plurality of first glue holes 122a may be disposed in the fixing piece 122, and the plurality of first glue holes 122a are disposed at intervals, so that the potting adhesive can more smoothly enter the first gap 124 by disposing the plurality of first glue holes 122a, so that the potting adhesive can fully fill the first gap 124.

The first glue hole 122a may be a round hole, an elliptical hole, a waist-shaped hole, a bar-shaped hole, a polygonal hole or other irregularly-shaped hole structures, which is not limited in the embodiment of the present application.

Optionally, as shown in fig. 8 and 9, the photovoltaic element 10 further includes a plurality of heat dissipation fins 130, one end of the heat dissipation fin 130 is connected to the pin 110, the other end of the heat dissipation fin 130 extends in a direction away from the pin 110, and the plurality of heat dissipation fins 130 are disposed at intervals.

In the embodiment of the present application, by arranging a plurality of heat dissipation fins 130 on the pins 110 at intervals, heat generated by the package module 100 can be conducted to the heat dissipation fins 130 through the pins 110, and the overall heat dissipation area of the photovoltaic element 10 can be increased through the heat dissipation fins 130, so that the heat dissipation performance of the photovoltaic element 10 is improved.

In some embodiments, the pin 110 may include two opposing sides, with a heat sink 130 disposed on at least one side of the pin 110. The heat sink 130 may be made of a heat conductive material, and the specific material of the heat sink 130 is not limited herein.

Illustratively, the heat sinks 130 may be arranged at intervals along the length direction of the leads 110, may be arranged at intervals along the width direction of the leads 110, or the heat sinks 130 may be arranged at intervals along a direction intersecting the length direction or the width direction of the leads 110.

Optionally, as shown in fig. 10 to 12, a photovoltaic junction box 20 is further provided in the embodiment of the present application, including a junction box main body 21 and any of the photovoltaic elements 10 described above; the junction box main body 21 is internally provided with a containing cavity, and the photovoltaic element 10 is arranged in the containing cavity; the junction box main body 21 is provided with a jack 201, and the jack 201 is used for allowing a bus bar to pass through to be plugged with the plugging structure 120.

In the embodiment of the application, the photovoltaic element 10 includes the package module 100 and the pin 110, the pin 110 is provided with the plugging structure 120, the plugging structure 120 is provided with the plugging portion 121, when the photovoltaic element is installed and used, the part of the side wall 209 of the junction box main body 21 can be provided with the jack 201, the positions of the jack 201 and the plugging portion 120 can be corresponding, and the connection between the bus bar and the photovoltaic element 10 can be realized by plugging and matching the bus bar led out from the photovoltaic assembly with the plugging portion 121, so that the operation is simple and quick, and the installation and use operation procedures of the photovoltaic junction box can be simplified. In addition, compared with the conventional photovoltaic element 10, the heat conduction effect of the pins 110 can be improved and the heat dissipation of the photovoltaic element 10 is facilitated because the holes in the pins 110 are not required.

It is understood that the photovoltaic junction box 20 of the present application can be applied to a photovoltaic module, and the photovoltaic junction box 20 is provided with the photovoltaic element 10. In particular applications, the photovoltaic junction box 20 may include a negative junction box, an intermediate junction box, and a positive junction box, depending on the actual connection function of the photovoltaic junction box 20.

The main difference between the negative terminal box, the intermediate terminal box and the positive terminal box is that the electrical connection relationship between the pins 110 and the wires 220 in the photovoltaic element 10 is different, and the positive terminal box is taken as an example for illustration, and other types of terminal boxes can be referred to for execution, which is not described herein.

Optionally, as shown in fig. 1, 13 and 15, a positioning column 202 is further disposed in the accommodating cavity, a positioning hole 111 is disposed in the pin 110, and the positioning column 202 is in positioning connection with the positioning hole 111.

In the embodiment of the application, the positioning column 202 is arranged in the accommodating cavity, the positioning hole 111 is arranged in the pin 110, and then when the photovoltaic element 10 is arranged in the accommodating cavity, the positioning column 202 is matched with the positioning hole 111 in a positioning way, so that the position of the photovoltaic element 10 in the box body 200 is accurately positioned.

Specifically, the junction box main body 21 may include a box body 200 and a box cover 210, wherein a positioning column 202 is disposed in a receiving groove 200a of the box body 200, a disposition position of the positioning column 202 is matched with a position of a positioning hole 111 in the pin 110, and the positioning column 202 extends from a bottom of the receiving groove 200a toward the box cover 210.

In some embodiments, pins 110 may be respectively disposed on two sides of the package module 100, at least one positioning hole 111 is disposed on a side of each pin 110 away from the package module 100, and a positioning column 202 is disposed at a position corresponding to each positioning hole 111 at a bottom of the accommodating groove 200 a. In this way, through the cooperation of the positioning columns 202 and the positioning holes 111, the installation and positioning effects of the photovoltaic element 10 can be realized, and meanwhile, the limiting effect of the photovoltaic element 10 can be realized through the positioning columns 202, so that the photovoltaic element 10 is prevented from generating larger displacement in the packaging process.

In some embodiments, the positioning posts 202 and the positioning holes 111 may be snap fit to facilitate installation of the photovoltaic element 10 in the cassette 200.

Alternatively, as shown in fig. 12 and 13, a groove 203 is disposed on a side of the junction box main body 21 facing away from the accommodating cavity, the junction box main body 21 is provided with a second glue hole 204, and the accommodating cavity is communicated with the groove 203 through the second glue hole 204.

In the embodiment of the present application, the groove 203 is disposed at a side of the junction box body 21 facing away from the accommodating groove 200a, specifically, the groove 203 may be disposed at a side of a portion of the sidewall 209 of the junction box body 21 facing away from the accommodating groove 200a, so that when the junction box body 21 is installed in the photovoltaic module, sealant may be injected into the groove 203 to adhesively fix the junction box body 21 and the photovoltaic module using the sealant. Meanwhile, the second glue hole 204 is provided on the junction box main body 21, specifically, the second glue hole 204 may be provided on a portion of the side wall 209 of the junction box main body 21, so that when pouring the pouring sealant into the accommodating cavity, the pouring sealant may enter the groove 203 through the second glue hole 204, and the adhesive fixing effect on the side of the junction box main body 21 provided with the groove 203 may be further realized.

Optionally, as shown in fig. 13 and 16, the second glue holes 204 are provided in plurality, and the second glue holes 204 are located below the package module 100 or the pins 110.

In the embodiment of the present application, a plurality of second glue holes 204 are arranged on a portion of the side wall at intervals, and the plurality of second glue holes 204 are respectively arranged at two sides of the insertion hole 201, so that the fluidity of the pouring sealant between the accommodating groove 200a and the groove 203 can be increased during glue injection, so that the pouring sealant can be more fully filled into the accommodating groove 200a and the groove 203.

Specifically, the second glue holes 204 may be disposed on a portion of the side wall corresponding to the package module 100 and the leads 110 of the photovoltaic element 10. The second glue hole 204 may be disposed below the package module 100 or the pin 110, or the second glue hole 204 may be disposed offset from the package module 100 or the pin 110.

It should be noted that the specific placement and structure of the second glue hole 204 may be set according to actual needs, which is not limited in this embodiment of the present application.

In other embodiments, as shown in fig. 12 and 16, a supporting table 207 may be disposed in the groove 203, and the supporting table 207 is used to support the whole photovoltaic junction box 20, so as to avoid the bottom of the junction box main body 21 from being greatly deformed during the installation and use, so as to affect the adhesion between the photovoltaic junction box 20 and the photovoltaic module.

Alternatively, as shown in fig. 12 to 14, the junction box main body 21 includes a box body 200 and a box cover 210, a receiving groove 200a is provided in the box body 200, the photovoltaic element 10 is placed in the receiving groove 200a, the box cover 210 covers a notch of the receiving groove 200a, a receiving cavity is formed by enclosing the box body 200 and the box cover 210, and a jack 201 is provided at a bottom of the receiving groove 200 a.

In some embodiments, the photovoltaic element 10 is mounted in the receiving groove 200a of the case 200, such that the plugging structure 120 on the pin 110 is disposed toward the bottom of the receiving groove 200a, and such that the insertion hole 201 in the bottom of the receiving groove 200a corresponds to the position of the plugging structure 120. In practical application, when the photovoltaic junction box 20 is required to be connected with a bus bar led out of the photovoltaic module, the end part of the bus bar penetrates into the jack 201 from one side of the box body 200 deviating from the accommodating groove 200a, and the end part of the bus bar is in plug-in fit with the plug-in structure 120 of the photovoltaic element 10, so that the operation is convenient and quick, and the assembly operation procedure of the photovoltaic junction box 20 and the bus bar can be simplified. It should be noted that, referring to the notch, the bottom of the corresponding accommodating groove 200a may be understood as the bottom of the accommodating groove 200 a.

The structure of the jack 201 disposed at the bottom of the accommodating groove 200a is adapted to the plugging portion 121 of the plugging structure 120, and the structures of the jack 201 and the plugging portion 121 may be both disposed according to the structure of the bus bar.

Illustratively, when the photovoltaic element 10 is placed in the accommodating groove 200a, the plugging portion 121 may or may not be in contact with the groove bottom of the accommodating groove 200a, the insertion hole 201 is provided at a position corresponding to the plugging portion 121 at the groove bottom, and the plugging portion 121 may be located outside the insertion hole 201; or the plug portion 121 is at least partially located inside the receptacle 201; or a step structure may be disposed on a side of the inner wall of the jack 201 near the bottom of the slot, where the plugging portion 121 is at least partially located in the jack 201, and the plugging portion 121 is limited and fixed by the step structure.

In some embodiments, a potting adhesive is disposed in the accommodating groove 200a, and the potting adhesive wraps around the photovoltaic element 10 to encapsulate and fix the photovoltaic element 10, so as to play a role in isolating and protecting the photovoltaic element 10.

Alternatively, as shown in fig. 15 and 16, the junction box main body 21 includes a box body 200 and a box cover 210, a containing groove 200a is provided in the box body 200, the box cover 210 covers the notch of the containing groove 200a, the box cover 210 and the box body 200 enclose to form the containing cavity, and a jack 201 is provided in the box cover 210. Preferably, a third glue hole 208 is formed at the bottom of the accommodating groove 200a, and the third glue hole 208 is used for injecting the pouring sealant into the accommodating cavity.

In some embodiments, the photovoltaic element 10 is installed in the accommodating groove 200a of the box body 200, so that the plugging structure 120 on the pin 110 is disposed towards the direction away from the bottom of the accommodating groove 200a, the box cover 210 covers the box body 200, and the insertion hole 201 on the box cover 210 corresponds to the plugging structure 120. In practical application, when the photovoltaic junction box 20 needs to be connected with a bus bar led out from the photovoltaic module, the end of the bus bar is inserted from the insertion hole 201 on the box cover 210 and is inserted into the insertion structure 120, so as to realize rapid installation of the photovoltaic junction box 20 and the bus bar, and it should be noted that, the notch is also taken as a reference, and the top of the corresponding accommodating groove 200a is understood as the bottom of the accommodating groove 200 a. In other embodiments, the photovoltaic junction box 20 may further include a wire 220, the wire 220 being connected to the box body 200, the wire 220 being electrically connected to the pins 110 of the photovoltaic element 10.

Thus, in some embodiments, as shown in fig. 12, the jack 201 is disposed in the case 200, and then the groove 203 is disposed on a side of the case 200 facing away from the accommodating cavity, and the second glue hole 204 is disposed in the case 200. In other embodiments, as shown in fig. 16, the insertion hole is disposed in the box cover 210, and then the groove is disposed on a side of the box cover 210 facing away from the accommodating cavity, and the second glue hole 204 is disposed in the box cover 210.

Optionally, as shown in fig. 13, 14 and 15, the bottom of the accommodating groove 200a is further provided with a first protrusion 205, the first protrusion 205 extends from the bottom of the accommodating groove toward the direction of the lid 210, the package module 100 contacts with the first protrusion 205, and a second gap 205a exists between the package module 100 and the bottom of the accommodating groove.

In the embodiment of the application, the first protruding portion 205 is disposed at the bottom of the accommodating groove 200a, so that the first protruding portion 205 is used for supporting the packaging module 100 of the photovoltaic element 10, so as to form the second gap 205a between the packaging module 100 and the bottom of the accommodating groove 200a, and further, the potting adhesive can flow between the packaging module 100 and the bottom of the accommodating groove, so as to form the cladding package for the packaging module 100.

In some embodiments, as shown in fig. 13 and 14, when the jack 201 is disposed at the bottom of the accommodating groove 200a of the box body 200, the second gap 205a may be disposed to communicate with the second glue hole 204 at the bottom of the accommodating groove, so that when pouring sealant is injected into the accommodating groove 200a, the pouring sealant enters the second gap 205a and simultaneously may enter the groove 203 through the second glue hole 204, so as to facilitate the flow of the pouring sealant on both sides of the box body 200.

Optionally, as shown in fig. 13 and 14, the bottom of the accommodating groove 200a is further provided with a second protrusion 206, the second protrusion 206 extends from the bottom of the accommodating groove toward the direction of the box cover 210, the pin 110 contacts with the second protrusion 206, and a third gap 206a exists between the pin 110 and the bottom of the accommodating groove.

In the embodiment of the application, the second protruding portion 206 is disposed at the bottom of the accommodating groove 200a, so that the second protruding portion 206 is used to support the pins 110 of the photovoltaic device 10, so as to form the third gap 206a between the package module 100 and the bottom of the accommodating groove 200a, and further, the potting adhesive can flow between the pins 110 and the bottom of the accommodating groove 200a, so as to form a cladding package for the pins 110.

In some embodiments, as shown in fig. 13 and 14, when the insertion hole 201 is disposed at the bottom of the accommodating groove 200a of the box body 200, a third gap 206a may be disposed to communicate with the second glue hole 204 at the bottom of the groove, so that when the pouring sealant enters the third gap 206a, the pouring sealant may enter the groove 203 through the second glue hole 204, thereby facilitating the flow of the pouring sealant at two sides of the box body 200.

Optionally, a first protruding part and a second protruding part are further arranged at the bottom of the accommodating groove, and the first protruding part and the second protruding part extend from the bottom of the accommodating groove towards the direction of the box cover; the first protruding part and/or the second protruding part limit at least part of the plug-in structure; or the first protruding part and the second protruding part are jointly matched with the plug-in structure in a plug-in manner.

In other embodiments, as shown in fig. 13 and 14, when the jack 201 is disposed at the bottom of the accommodating groove 200a of the box body 200, the first protruding portion 205 and the second protruding portion 206 are disposed on two sides of the jack 201, and at least one of the first protruding portion 205 and the second protruding portion 206 can be used to limit at least part of the plugging structure 120, so that displacement that may occur to the plugging structure 120 can be prevented, and reliability in installation of the plugging structure 120 is improved; or the first protruding part 205 and the second protruding part 206 can be used for being matched with the plugging structure in the photovoltaic element 10 in a plugging manner, so that a clamping effect is formed on the plugging structure 120 in the photovoltaic element 10, displacement possibly generated by the plugging structure 120 can be avoided, and the plugging matching accuracy of the plugging structure 120 and the bus bar is improved.

Optionally, as shown in fig. 1 and 13, the peripheral edge of the pin 110 is provided with glue overflow 112.

In the embodiment of the application, the glue overflow port 112 is arranged at the circumferential edge of the pin 110, so that the pouring sealant can flow between the upper space and the lower space of the pin 110 more smoothly in the packaging process. Meanwhile, the glue overflow 112 is arranged at the circumferential edge position of the pin 110, so that the influence of the glue overflow 112 on the heat conduction of the pin 110 can be reduced.

It can be understood that, after the photovoltaic element 10 is mounted in the accommodating groove 200a of the case 200, the gap between the peripheral edge of the photovoltaic element 10 and the peripheral sidewall of the accommodating groove 200a is small, and the pouring sealant is not easy to flow into the space below the photovoltaic element 10 when pouring the pouring sealant into the accommodating groove 200 a. By providing the flash 112 at the circumferential edge of the lead 110, the flash 112 communicates with the third gap 206a so that the potting compound injected into the receiving groove 200a can flow into the lower space of the photovoltaic element 10 via the flash 112.

The glue overflow port 112 may be an opening structure such as a V-shaped opening, a C-shaped opening, a U-shaped opening, an arc opening, or other opening structures. The positions and shapes of the glue overflow openings 112 provided on the peripheral edges of the pins 110 may be set according to actual needs, which are not limited in the embodiment of the present application.

In some embodiments, the jack 201 is disposed at the bottom of the accommodating groove 200a of the box body 200, and the corresponding assembly process of the photovoltaic junction box 20 is as follows:

firstly, the photovoltaic element 10 is put into the accommodating groove 200a of the box body 200, so that the positioning column 202 at the bottom of the accommodating groove 200a is matched with the positioning hole 111 in the pin 110 of the photovoltaic element 10, and the plug-in structure 120 in the pin 110 faces to the bottom of the accommodating groove 200a and corresponds to the jack 201;

Then, sealant is filled in the groove 203 at the bottom of the box body 200, the box body 200 is fixed at a preset position in the photovoltaic module, and bus bars in the photovoltaic module penetrate into the jacks 201 of the box body 200 and are fixedly spliced with the splicing structures 120 on the pins 110;

Finally, pouring sealant into the accommodating groove 200a until the accommodating groove 200a is filled with pouring sealant, and covering the box cover 210 at the notch of the accommodating groove 200a after the pouring sealant is solidified, thereby completing the installation of the photovoltaic junction box 20.

In other embodiments, the receptacle 201 is disposed in the cap 210, and the corresponding photovoltaic junction box 20 is assembled as follows:

Firstly, the photovoltaic element 10 is put into the accommodating groove 200a of the box body 200, the positioning column 202 at the bottom of the accommodating groove 200a is matched with the positioning hole 111 in the pin 110 of the photovoltaic element 10, the plug-in structure 120 in the pin 110 faces to the direction far away from the bottom of the accommodating groove 200a, the box cover 210 is covered on the box body 200, and the jack 201 in the box cover 210 corresponds to the plug-in structure 120.

Then, sealant is applied in the groove 203 arranged on the box cover 210, the bus bar in the photovoltaic module is penetrated into the jack 201 on the box cover 210, and the bus bar is fixedly spliced with the splicing structure 120 on the pin 110, so that the whole photovoltaic junction box 20 is fixedly spliced at a preset position in the photovoltaic module.

Finally, pouring sealant is injected into the accommodating cavity through the third sealant hole 208 on the box body 200 until the accommodating cavity is filled with the pouring sealant, and the installation of the photovoltaic junction box 20 can be completed after the pouring sealant is solidified.

It should be noted that the specific assembly process of the photovoltaic junction box 20 may be set according to the actual installation requirement, which is not limited in the embodiment of the present application.

Optionally, an embodiment of the present application further provides a photovoltaic module, where the photovoltaic module includes a battery sheet, a bus bar, and the photovoltaic element 10 of any one of the foregoing embodiments, or the photovoltaic junction box 20 of any one of the foregoing embodiments, and the bus bar of the photovoltaic module is electrically connected to the battery sheet.

In the embodiment of the application, the photovoltaic module may include the photovoltaic element 10, the pin 110 of the photovoltaic element 10 is provided with the plugging structure 120, the plugging structure 120 is provided with the plugging portion 121, when the photovoltaic element 10 is installed and used, the bus bar in the photovoltaic module is plugged and matched with the plugging portion 121 of the plugging structure 120, specifically, one end of the bus bar, which is far away from the battery piece, is plugged and connected with the plugging portion 121, so that the connection between the bus bar of the photovoltaic module and the photovoltaic element 10 can be realized, the operation is simple and quick, and the use and operation procedures of the installation junction box can be simplified. In addition, compared with the conventional photovoltaic element 10, the heat conduction effect of the pins 110 can be improved because the holes in the pins 110 are not needed, so that the heat dissipation of the photovoltaic element 10 is facilitated.

Specifically, the photovoltaic module comprises a battery piece, a bus bar and a photovoltaic element 10, the bus bar is electrically connected with the battery piece, and then the bus bar is utilized to collect current generated by photoelectric conversion of the battery piece, the bus bar is in plug-in fit with a plug-in structure 120 in the photovoltaic element 10, and the current in the bus bar can be led into the photovoltaic element 10, so that the connection effect of the photovoltaic module and the protection effect of the photovoltaic module are realized through the photovoltaic element 10.

It should be noted that, the photovoltaic module in the embodiment of the present application may include the photovoltaic element 10 in any embodiment described above, or include the photovoltaic junction box 20 in any embodiment described above, and the structure of the photovoltaic element 10 or the photovoltaic junction box 20 may be referred to the foregoing, which is not repeated herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims (19)

1. A photovoltaic element, comprising: the packaging module, the pins and the plug-in structure;

the pin is connected to the packaging module, the plug-in structure is connected with the pin, the plug-in structure is provided with a plug-in part, and the plug-in part is used for being plugged with the bus bar.

2. The photovoltaic element of claim 1, wherein the plug structure comprises: the first plug connector and the second plug connector are respectively connected to the pins, and at least part of the first plug connector and the second plug connector are in contact to form the plug part.

3. The photovoltaic element of claim 2, wherein the first and second connectors each comprise a securing tab and a clamping tab;

The fixing piece is connected with the pin, the clamping piece is connected with the fixing piece, and a first gap is arranged between the clamping piece and the fixing piece; the clamping piece in the first plug connector and the clamping piece in the second plug connector are oppositely arranged and at least partially contacted to form the plug connector.

4. The photovoltaic element according to claim 3, wherein the clip in the first connector is a first clip and the clip in the second connector is a second clip, the first clip and the second clip are in contact with each other on a side near the lead, and the first clip and the second clip form a slot on a side far from the lead.

5. A photovoltaic element according to claim 3, wherein the anchor sheet is provided with a first glue hole, which communicates with the first gap for injecting a potting compound into the first gap.

6. The photovoltaic element according to claim 1, further comprising a plurality of heat sinks, one end of each of the heat sinks is connected to the corresponding pin, the other end of each of the heat sinks extends away from the corresponding pin, and the plurality of heat sinks are spaced apart; and/or the packaging module is used for wrapping the bypass circuit for protecting the photovoltaic module.

7. A photovoltaic junction box, comprising: a junction box body and the photovoltaic element according to any one of claims 1 to 6;

The junction box main body is internally provided with a containing cavity, and the photovoltaic element is arranged in the containing cavity; the junction box body is provided with a jack, and the jack is used for allowing the bus bar to pass through so as to be spliced with the splicing part.

8. The photovoltaic junction box according to claim 7, wherein a positioning column is further arranged in the accommodating cavity, a positioning hole is formed in the pin, and the positioning column is in positioning connection with the positioning hole.

9. The photovoltaic junction box according to claim 7, wherein a groove is formed in one side of the junction box main body facing away from the accommodating cavity, a second glue hole is formed in the junction box main body, and the accommodating cavity is communicated with the groove through the second glue hole.

10. The photovoltaic junction box according to claim 9, wherein the second glue holes are provided in plurality, and the second glue holes are located below the package module or the pins.

11. The photovoltaic junction box according to claim 7, wherein the junction box main body comprises a box body and a box cover, the box body is provided with a containing groove, the box cover covers the notch of the containing groove, the containing cavity is formed by enclosing the box cover and the box body, and the jack is arranged at the bottom of the containing groove.

12. The photovoltaic junction box according to claim 7, wherein the junction box main body comprises a box body and a box cover, the box body is provided with a containing groove, the box cover covers the notch of the containing groove, the containing cavity is formed by enclosing the box cover and the box body, and the jack is arranged in the box cover.

13. The photovoltaic junction box according to claim 11 or 12, wherein a first protruding portion is further provided at a bottom of the accommodating groove, the first protruding portion extends from the bottom of the accommodating groove toward the direction of the box cover, the packaging module is in contact with the first protruding portion, and a second gap is provided between the packaging module and the bottom of the accommodating groove.

14. The photovoltaic junction box according to claim 11 or 12, wherein the bottom of the accommodation groove is further provided with a second protrusion extending from the bottom toward the direction of the cover, the pin is in contact with the second protrusion, and a third gap is provided between the pin and the bottom.

15. The photovoltaic junction box according to claim 7 or 9, wherein the peripheral edge of the pin is provided with glue overflow openings; and/or the jack is positioned on a portion of the side wall of the junction box body.

16. The photovoltaic junction box according to claim 9 or 10, wherein the second glue hole is located on a portion of a side wall of the junction box body.

17. The photovoltaic junction box according to claim 12, wherein the bottom of the accommodation groove is provided with a third glue hole.

18. The photovoltaic junction box according to claim 11 or 12, wherein the bottom of the accommodation groove is further provided with a first protrusion and a second protrusion; the first protruding part and the second protruding part extend from the bottom of the groove towards the direction of the box cover;

The first protruding part and/or the second protruding part limit at least part of the plug-in structure; or the first protruding part and the second protruding part are jointly matched with the plug-in structure in a plug-in manner.

19. A photovoltaic module comprising a bus bar, and a photovoltaic element according to any one of claims 1 to 6, or a photovoltaic junction box according to any one of claims 7 to 18, the bus bar of the photovoltaic module being connected to the photovoltaic element.