CN213990597U

CN213990597U - Photovoltaic junction box and photovoltaic module

Info

Publication number: CN213990597U
Application number: CN202023035478.8U
Authority: CN
Inventors: 陈龙
Original assignee: CSI Cells Co Ltd; Canadian Solar Manufacturing Changshu Inc
Current assignee: CSI Cells Co Ltd; Canadian Solar Manufacturing Changshu Inc; CSI Solar Technologies Inc
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-08-17
Anticipated expiration: 2030-12-16

Abstract

The utility model provides a photovoltaic terminal box and photovoltaic module of using this photovoltaic terminal box. The photovoltaic junction box comprises a shell and a conductive assembly contained in the shell, the conductive assembly comprises a diode, a radiating part in hollow-out arrangement is arranged at the bottom of the shell, and the radiating part and the diode are arranged correspondingly. The utility model discloses a photovoltaic terminal box has good radiating effect, and simple structure is suitable for the practicality.

Description

Photovoltaic junction box and photovoltaic module

Technical Field

The utility model relates to a photovoltaic terminal box and photovoltaic module of using this photovoltaic terminal box belong to photovoltaic technical field.

Background

With the development of photovoltaic technology, the cell of the photovoltaic module is larger and larger, so that the power generation efficiency of the photovoltaic module is improved, and meanwhile, the short-circuit current and the open-circuit voltage of the photovoltaic module are increased, and therefore, the requirement on the photovoltaic junction box is higher.

In order to meet the use requirement of the photovoltaic module, the existing photovoltaic junction box is usually to increase the chips in the diode structure, so that one or more chips are connected in parallel in the same diode structure, and then the purpose of improving the heat dissipation performance of the photovoltaic junction box is achieved.

In view of the above, there is a need to provide a new photovoltaic junction box to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a photovoltaic terminal box and use photovoltaic module of this photovoltaic terminal box, this photovoltaic terminal box has good radiating effect, and simple structure is suitable for the practicality.

In order to realize the above-mentioned utility model purpose, the utility model provides a photovoltaic terminal box, be in including the casing with accept conductive component in the casing, conductive component includes the diode, the bottom of casing is equipped with the radiating part that the fretwork set up, the radiating part with the diode corresponds the setting.

As a further improvement of the present invention, the photovoltaic junction box further includes a heat dissipation member, and the housing includes a bottom shell and a top plate fastened on the bottom shell; the heat dissipation part is formed by inwards sinking from the bottom of the bottom shell, sliding grooves are formed in two sides of the heat dissipation part, and the heat dissipation component is contained in the heat dissipation part in a sliding mode through the sliding grooves.

As a further improvement, the heat dissipation part is provided with a buckle structure, the heat dissipation component corresponds and is provided with a lock catch structure, and through the lock catch cooperation between the buckle structure and the lock catch structure, the heat dissipation component detachably connects in the heat dissipation part.

As a further improvement, the buckle structure is L-shaped, including the horizontally extending support plate and from the edge of the support plate perpendicular to the buckle protrusion extending in the direction of the support plate, the buckle structure is a recess formed by the inward recess of the surface of the heat dissipation member.

As a further improvement of the present invention, the conductive assembly further includes a first substrate and a second substrate, the diode is connected between the first substrate and the second substrate, the heat dissipation portion is located under the diode, and the bottom of the diode and the heat dissipation portion form a heat dissipation channel therebetween.

As a further improvement of the present invention, the heat dissipating member is a heat conducting member made of a material having a heat conductivity coefficient, such as iron or copper.

As a further improvement of the present invention, the bottom surface of the housing is provided with a bonding portion, the bonding portion is provided with 2 and is located respectively at both sides of the heat dissipation portion.

As a further improvement of the present invention, the bonding portion includes a bonding region and a ventilation structure provided in the bonding region; the bonded area is located at an edge of each of the bonds.

As a further improvement of the present invention, the ventilation structure runs through the bottom of the housing is provided, and every the bonding area is provided with 1 at least the ventilation structure.

In order to realize the above-mentioned utility model purpose, the utility model discloses still provide a photovoltaic module, include the photovoltaic lamination spare and connect terminal box on the photovoltaic lamination spare, wherein, the terminal box is aforementioned photovoltaic terminal box.

The utility model has the advantages that: the utility model discloses a photovoltaic terminal box is through setting up the radiating part for the photovoltaic terminal box has good radiating effect, simultaneously, can dismantle the radiator unit of being connected through setting up and radiating part, makes the radiator unit that photovoltaic terminal box accessible was adjusted and is had different heat dissipation coefficients reach different radiating effect, just the utility model provides a photovoltaic terminal box simple structure has good practicality, further makes the photovoltaic module who uses this photovoltaic terminal box have longer life.

Drawings

Fig. 1 is the utility model discloses photovoltaic terminal box's split schematic diagram.

Fig. 2 is a perspective view of the photovoltaic junction box of fig. 1 from another angle.

Fig. 3 is a top view of the photovoltaic junction box of fig. 1 without the heat sink member.

Fig. 4 is a schematic structural view of the bottom of the photovoltaic junction box of fig. 3.

Fig. 5 is a schematic cross-sectional view of the photovoltaic junction box of fig. 3 taken along the direction a-a.

Fig. 6 is a schematic structural diagram of the photovoltaic module of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified and limited, the terms "receiving", "connecting", "fixing" and "snap" are to be understood in a broad sense, for example, as a fixed connection, a detachable connection, a relatively displaceable sliding connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through other elements, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Referring to fig. 1 to 5, the present invention discloses a photovoltaic junction box 100, which includes a housing 1, a conductive component 2 accommodated in the housing 1, and a heat dissipation portion 3 disposed on the housing 1 for dissipating heat from the conductive component 2. The utility model discloses in, casing 1 is the insulating housing who adopts insulating material to make, and casing 1 has characteristics such as high strength, ageing resistance.

In a preferred embodiment of the present invention, the housing 1 includes a bottom shell 11 and a top plate (not shown), the top plate is fastened on the bottom shell 11 to form an accommodating space 12 for accommodating the conductive assembly 2, and further, the top plate is detachably connected to the bottom shell 11, so as to facilitate installation and replacement of the conductive assembly 2 accommodated in the accommodating space 12. Preferably, still be equipped with seal structure between roof and the drain pan 11, so set up, effectively promoted photovoltaic terminal box 100's sealed degree, further promoted photovoltaic terminal box 100's life.

In a preferred embodiment of the present invention, the bottom surface of the housing 1 is further provided with an adhesive portion 13. The bonding portions 13 are provided on the bottom surface of the bottom case 11 and are provided in 2 numbers, and the two bonding portions 13 are respectively located on both sides of the heat dissipation portion 3. Further, the bonding portion 13 includes a bonding area 131 and a ventilation structure 132 provided in the bonding area 131; the bonding area 131 is located at an edge of each bonding portion 13 to reduce assembly costs between the photovoltaic junction box 100 and the photovoltaic laminate 200 while facilitating assembly of the photovoltaic junction box 100 and the photovoltaic laminate 200.

The ventilation structures 132 penetrate through the bottom shell 11 to be communicated with the accommodating space 12, so that heat dissipation of the conductive component 2 accommodated in the accommodating space 12 is further facilitated, and in such a configuration, when the photovoltaic junction box 100 and the photovoltaic laminate 200 are separately arranged, air convection can be conveniently formed between different ventilation structures 132 or between the ventilation structures 132 and the heat dissipation part 3, so that heat dissipation of the conductive component 2 is facilitated; and when the photovoltaic junction box 100 is assembled with the photovoltaic laminate 200 through the glue coated on the bonding region 131, the bonding portion 13 is attached to the photovoltaic laminate 200, and at this time, the photovoltaic junction box 100 can dissipate heat of the conductive component 2 through the heat dissipation portion 3. Preferably, at least 1 ventilation structure 132 is disposed in each bonding region 131 to further improve the heat dissipation effect of the photovoltaic junction box 2.

The conductive assembly 2 comprises a first substrate 21, a second substrate 22 and a diode 23, wherein the first substrate 21 and the second substrate 22 are both disposed in a plate shape to be connected with bus bars on the photovoltaic laminate 200, in the present invention, the first substrate 21 and the second substrate 22 are connected to the bottom case 11 through a screw structure 24 and are located in the accommodating space 12; preferably, the first substrate 21 and the second substrate 22 are metal substrates made of copper or copper alloy, but in other embodiments of the present invention, the conductive substrate 21 may also be made of other conductive materials. Further, a diode 23 is connected between the first substrate 21 and the second substrate 22 for enabling on/off of a current between the first substrate 21 and the second substrate 22.

The heat dissipation part 3 is disposed at the bottom of the housing 1 for dissipating heat of the conductive component 2 accommodated in the accommodating space 12, thereby ensuring normal operation of the conductive component 2. Specifically, the heat dissipation portion 3 is formed by recessing from the bottom of the bottom case 11 into the accommodating space 12, and the heat dissipation portion 3 is disposed through the bottom case 11; further, heat dissipation part 3 corresponds the setting with diode 23, is promptly the utility model discloses in, heat dissipation part 3 is located diode 23 under, and forms a heat dissipation channel (not numbered) between diode 23's bottom and heat dissipation part 3 to make things convenient for heat dissipation part 3 to dispel the heat to diode 2.

The photovoltaic connector 100 further comprises a heat dissipation member 4 detachably connected in the heat dissipation part 3, sliding grooves 31 are further formed in two sides of the heat dissipation part 3, and the heat dissipation member 4 is slidably accommodated in the heat dissipation part 3 through the sliding grooves 31; in a preferred embodiment of the present invention, the end of the sliding slot 31 is further provided with an inclined guiding surface 311, so that the heat dissipation member 4 can be conveniently inserted into the sliding slot 31 along the inclined guiding surface 311, thereby facilitating the assembly between the heat dissipation member 4 and the heat dissipation part 3.

In the present invention, the heat dissipating member 4 is flat, and the thickness of the heat dissipating member 4 corresponds to the height of the sliding groove 31, so that the heat dissipating member 4 can be stably accommodated in the sliding groove 31. Preferably, the heat dissipation member 4 is made of metal material with good thermal conductivity, such as iron or copper, and of course, in other embodiments of the present invention, the heat dissipation member 4 can also be made of other material with certain thermal conductivity; that is, the higher the thermal conductivity of the material used to prepare the heat dissipation member 4, the better the thermal conductivity of the heat dissipation member 4, so that the user can select the material of the heat dissipation member 4 according to actual needs.

In a preferred embodiment of the present invention, the heat dissipating portion 3 is further formed with a fastening structure 32, and the fastening structure 32 is disposed at an edge of the heat dissipating portion 3. In the present embodiment, the latching structure 32 is disposed in an L shape, and includes a supporting plate 321 horizontally extending from one side edge of the heat dissipating portion 3 and a latching protrusion 322 extending from the edge of the supporting plate 321 in a direction perpendicular to the supporting plate 321.

Further, be equipped with the hasp structure 41 that corresponds the setting with buckle structure 32 on the radiator unit 4 the utility model discloses in, hasp structure 41 is the recess of forming from radiator unit 4 surface inwards sunken, and radiator unit 4 passes through the hasp cooperation between buckle structure 32 and the hasp structure 33 for radiator unit 4 detachably connects in radiator unit 3.

It should be noted that the present invention is illustrated by taking the heat dissipation member 4 connected in the heat dissipation portion 3 as an example, in other embodiments of the present invention, the heat dissipation portion 3 may also be directly hollow, that is, the present invention may be provided with the heat dissipation member 4 or not, which may be selected according to actual needs.

Referring to fig. 6, the present invention further provides a photovoltaic module 300, which includes a photovoltaic laminate 200 and a junction box connected to the photovoltaic laminate 200, wherein the junction box is the aforementioned photovoltaic junction box 100, and further, the photovoltaic module 300 can be connected to other photovoltaic modules 300 or led out electric energy through a connector on the photovoltaic junction box 100, so as to finally realize the conversion from the optical energy to the electric energy of the photovoltaic module 300.

It should be noted that the photovoltaic laminate 200 may be a single-glass photovoltaic laminate or a dual-glass photovoltaic laminate, that is, the specific structure of the photovoltaic laminate 200 may be designed according to the prior art or the actual situation, and the photovoltaic laminate 200 is not described in detail herein.

To sum up, the utility model discloses a photovoltaic terminal box 100 is through setting up radiating part 3 for photovoltaic terminal box 100 has good radiating effect, simultaneously, can dismantle the radiating component 4 of being connected through setting up and radiating part 3, makes photovoltaic terminal box 100 accessible adjust radiating component 4 that has different coefficient of heat dissipation reach different radiating effect, just the utility model provides a photovoltaic terminal box 100 simple structure has good practicality, further makes the photovoltaic module 300 who uses this photovoltaic terminal box 100 have longer life.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A photovoltaic junction box, includes the casing and accepts the conductive component in the casing, the conductive component includes the diode, its characterized in that: the bottom of the shell is provided with a radiating part which is arranged in a hollow mode, and the radiating part and the diode are arranged correspondingly.

2. The photovoltaic junction box of claim 1, wherein: the photovoltaic junction box further comprises a heat dissipation component, and the shell comprises a bottom shell and a top plate clamped on the bottom shell; the heat dissipation part is formed by inwards sinking from the bottom of the bottom shell, sliding grooves are formed in two sides of the heat dissipation part, and the heat dissipation component is contained in the heat dissipation part in a sliding mode through the sliding grooves.

3. The photovoltaic junction box of claim 2, wherein: the heat dissipation structure is characterized in that a buckle structure is arranged in the heat dissipation part, the heat dissipation component is correspondingly provided with a lock catch structure, and the heat dissipation component is detachably connected in the heat dissipation part through the lock catch matching between the buckle structure and the lock catch structure.

4. The photovoltaic junction box of claim 3, wherein: the buckle structure is L-shaped and comprises a horizontally extending support plate and a buckle protrusion extending from the edge of the support plate in the direction perpendicular to the support plate, and the buckle structure is a groove formed by inwards recessing the surface of the heat dissipation component.

5. The photovoltaic junction box of claim 1, wherein: the conductive assembly further comprises a first substrate and a second substrate, the diode is connected between the first substrate and the second substrate, the heat dissipation part is located right below the diode, and a heat dissipation channel is formed between the bottom of the diode and the heat dissipation part.

6. The photovoltaic junction box of claim 2, wherein: the heat dissipation member is a heat conduction member made of a material with a heat conduction coefficient.

7. The photovoltaic junction box of claim 1, wherein: the bottom surface of casing is equipped with bonding portion, bonding portion is provided with 2 simultaneously and is located respectively the both sides of heat-dissipating part.

8. The photovoltaic junction box of claim 7, wherein: the bond comprising a bond region and a venting structure disposed within the bond region; the bonded area is located at an edge of each of the bonds.

9. The photovoltaic junction box of claim 8, wherein: the ventilation structure runs through the bottom setting of casing, and every bonding region is equipped with 1 at least ventilation structure.

10. A photovoltaic module comprising a photovoltaic laminate and a junction box attached to the photovoltaic laminate, characterized in that: the junction box is the photovoltaic junction box as claimed in any one of claims 1-9.