CN213817687U - Photovoltaic junction box and photovoltaic module - Google Patents
Photovoltaic junction box and photovoltaic module Download PDFInfo
- Publication number
- CN213817687U CN213817687U CN202022994670.3U CN202022994670U CN213817687U CN 213817687 U CN213817687 U CN 213817687U CN 202022994670 U CN202022994670 U CN 202022994670U CN 213817687 U CN213817687 U CN 213817687U
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- substrate
- junction box
- photovoltaic
- protection component
- photovoltaic junction
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- 239000000758 substrate Substances 0.000 claims abstract description 61
- 238000005452 bending Methods 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
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 accommodated in the shell, wherein the conductive assembly comprises a first substrate, a second substrate and a diode used for electrically connecting the first substrate and the second substrate; when the protection component is at the second position, the first substrate and the second substrate are electrically connected through the protection component. The utility model discloses a photovoltaic terminal box can be effectual protects at its inside diode, has effectively promoted the life of photovoltaic terminal box, and simple structure is suitable for the practicality.
Description
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
In order to meet the use requirement of a photovoltaic assembly, a bypass diode is often arranged in the existing photovoltaic junction box to protect a photovoltaic laminating part in the photovoltaic assembly, however, the bypass diode is in a long-term heating state in the conduction process due to the fact that current is conducted in the forward direction when the bypass diode works, the highest temperature of the bypass diode can reach 200 ℃, and the service life of the bypass diode is greatly influenced.
In fact, with the development of the 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 then, the current flowing through the bypass diode is also larger and larger, so that the heat generated by the bypass diode in the working process is gradually increased, and further, the failure proportion of the bypass diode in the prior art is higher and higher.
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 can be effectual protect the diode of connecting in its inside, has effectively promoted the life of photovoltaic terminal box, and simple structure is suitable for the practicality.
In order to achieve the above object of the present invention, the present invention provides a photovoltaic junction box, including a housing and a conductive assembly accommodated in the housing, wherein the conductive assembly includes a first substrate, a second substrate and a diode for electrically connecting the first substrate and the second substrate, wherein the photovoltaic junction box further includes a protection assembly disposed at the bottom of the housing, the protection assembly has a first position and a second position different from the first position, and when the protection assembly is at the first position, the first substrate and the second substrate are electrically connected through the diode; when the protection component is at the second position, the first substrate and the second substrate are electrically connected through the protection component.
As a further improvement of the present invention, the protection assembly is located below the diode, and includes a connection member and a protection member connected to the connection member.
As a further improvement of the present invention, the connecting member is a metal riveting member made of a metal material, and the protection member is connected to the first substrate electrically connected to the metal riveting member.
As a further improvement of the present invention, the protection member is a thermosensitive protection member made of thermosensitive metal material, and the protection member may be deformed under the heat-generating action of the diode, and the first position and the second position are switched.
As a further improvement of the present invention, the first substrate has a first connecting portion, the first connecting portion is from the edge orientation of the first substrate the direction of the protection component is bent and formed, the first connecting portion runs through the casing and with the protection component electric connection.
As a further improvement of the present invention, the first connecting portion is L-shaped, the first connecting portion includes a perpendicular to the bending portion of the first substrate extension and an extending portion parallel to the end of the bending portion extension, and the protection component is connected to the extending portion.
As a further improvement of the present invention, the second substrate has a second connecting portion corresponding to the first connecting portion, the second connecting portion is a direction toward the edge of the second substrate, the direction of the protection component is bent to form, and the protection component is in when the second position is reached, the second connecting portion is electrically connected to the protection component.
As a further improvement of the present invention, the housing includes a main body portion, a bottom plate and a block in the main body portion are disposed on the top plate of the main body portion, the top plate, the main body portion and the bottom plate jointly enclose and form an accommodating space for accommodating the conductive component.
As a further improvement, the main body part is provided with a clamping part, the bottom plate passes through the clamping part with the main body part is connected, the bottom of the bottom plate with a space of stepping down is formed between the fixed plane of the photovoltaic junction box, the protection component is accommodated in the space of stepping down.
In order to realize the above purpose, the utility model provides a photovoltaic module, include the photovoltaic lamination piece and connect terminal box on the photovoltaic lamination piece, wherein, the terminal box is aforementioned photovoltaic terminal box.
The utility model has the advantages that: the utility model discloses a photovoltaic terminal box can generate heat when exceeding the switching temperature of settlement at the diode in the photovoltaic terminal box through setting up the protection subassembly, carries out the short circuit to the diode, has avoided the diode to be in for a long time and has switched on the state of generating heat to when increasing the life of diode, promote the whole life of photovoltaic terminal box. And simultaneously, the utility model provides a photovoltaic terminal box's simple structure has good practicality, further makes the photovoltaic module who uses this photovoltaic terminal box have longer life.
Drawings
Fig. 1 is a schematic structural diagram of the photovoltaic junction box of the present invention.
Fig. 2 is a bottom schematic view of the photovoltaic junction box of fig. 1 at an angle.
Fig. 3 is a bottom schematic view of another angle of the photovoltaic junction box of fig. 1.
Fig. 4 is a schematic cross-sectional view of the photovoltaic junction box of fig. 3 taken along direction a-a.
Fig. 5 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 4, 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 protection component 3 disposed at the bottom of the housing 1. 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 main body 11, a bottom plate 12 accommodated in the main body 11, and a top plate (not shown) clamped above the main body 11, and the top plate, the main body 11 and the bottom plate 12 together enclose an accommodating space 13 for accommodating the conductive assembly 2.
Further, main part 11 is the cavity setting, and the inside of main part 11 is equipped with the block portion 111 (as in fig. 4) that is used for supporting and connect bottom plate 12, and bottom plate 12 is the flat device of board, and the bottom of bottom plate 12 is equipped with the card that corresponds the setting with block portion 111 and holds protruding 121, and bottom plate 12 and main part 11 are connected in main part 11 through the cooperation location that the card held protruding 121 and block portion 111, and form one between the bottom of bottom plate 12 and the fixed plane of photovoltaic terminal box 100 and step down space 14 the utility model discloses in, step down space 14 forms between the bottom of bottom plate 12 and photovoltaic lamination spare 200.
The top plate is fastened on the main body 11. in a preferred embodiment of the present invention, the top plate is detachably connected to the main body 11, so as to facilitate the installation and replacement of the conductive component 2 accommodated in the accommodating space 13. Preferably, still be equipped with seal structure between roof and the main part 11, so set up, can effectively promote photovoltaic terminal box 100's sealed degree, further promote photovoltaic terminal box 100's life.
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 arranged in a plate shape to be respectively connected with bus bars on the photovoltaic laminate 200, in the utility model, the first substrate 21 and the second substrate 22 are connected on the bottom plate 12 through a thread structure 24 and are positioned in the accommodating space 13; 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 first substrate 21 and the second substrate 22 may also be substrates made of other conductive materials.
The first substrate 21 has a first connection portion 211 penetrating the bottom plate 12, and the first connection portion 211 is formed by extending from an edge of the first substrate 21 toward the protection component 3. In a preferred embodiment of the present invention, the first connecting portion 211 is L-shaped, and includes a bending portion 212 extending perpendicular to the first substrate 21 toward the protecting component 3 and an extending portion 213 extending from the bending portion 212 and parallel to the first substrate 21, the bending portion 212 penetrates through the bottom plate 12, the extending portion 213 is located below the bottom plate 12 and located in the yielding space 14, and further, the protecting component 3 is connected to the extending portion 213.
The second substrate 22 has a second connecting portion 221 corresponding to the first connecting portion 211, and the second connecting portion 221 is formed by bending from the edge of the second substrate 22 toward the direction of the protection component 3; and the second connection portion 221 is disposed through the base plate 12. In a preferred embodiment of the present invention, the second connecting portion 221 extends perpendicular to the second substrate 22, and in this embodiment, the second connecting portion 221 is disposed parallel to the bending portion 212.
The protection component 3 is used for electrically connecting the first substrate 21 and the second substrate 22 when the temperature of the diode 23 is too high, so as to short circuit the diode 23, prevent the diode 23 from continuously heating, and ensure the service life of the photovoltaic junction box 100.
In the utility model discloses in, protection component 3 is acceptd in the space of stepping down 14 and is located the below of diode 23, and protection component 3 includes connecting elements 31 and the protection component 32 of connection on connecting elements 31, specifically, and protection component 32 passes through connecting elements 31 and first base plate 21 electric connection, and preferably, protection component 32 is for adopting metal material to make metal riveting component, and protection component 32 passes through metal riveting component and first base plate 21 electric connection.
The protective member 32 is a heat-sensitive protective member made of a heat-sensitive metal material, that is, the protective member 32 is deformable by heat generated by the diode 23 and is switched between the first position and the second position. Specifically, the temperature at which the diode 23 controls the deformation of the protective member 32 is defined as the switching temperature; when the temperature of the diode 23 is lower than the switching temperature, the protection member 32 is located at the first position, and at this time, one end of the protection member 32 is electrically connected to the first connection portion 211 penetrating the base plate 12 through the connection member 31, and the other end is far away from the second connection portion 221 penetrating the base plate 12, so that the first substrate 21 and the second substrate 22 are electrically connected through the diode 23.
When the temperature of the diode 23 is higher than the switching temperature, the protection member 32 deforms and is located at a second position different from the first position, at this time, one end of the protection member 32 is electrically connected to the first connection portion 211 through the connection member 31, and the other end of the protection member is in contact with the second connection portion 221 penetrating through the bottom plate 12, so that the first substrate 21 and the second substrate 22 are electrically connected through the protection member 32, and then the diode 23 is short-circuited, thereby facilitating the cooling of the diode 23.
Further, when the temperature of the diode 23 is reduced to be lower than the switching temperature, the protection member 32 is deformed and restored to the first position from the second position, so that the other end of the protection member 32 away from the connection member 31 is separated from the second connection portion 221, and at this time, the first substrate 21 and the second substrate 22 are electrically connected through the diode 23 again.
It should be noted that, the utility model discloses in be used for controlling the switch temperature that protection component 32 takes place deformation to receive the influence of temperature sensing metallic material thermal expansion coefficient itself, further, switch temperature can be selected according to actual need by the user, then confirms the kind and the type that are used for preparing protection component 32's temperature sensing metallic material, namely, the utility model discloses well protection component 32's specific lectotype can be selected according to diode 23's specific kind, only needs to guarantee when diode 23 reaches switch temperature, and controllable protection component 32 takes place deformation with diode 23 carry out the short circuit can.
Referring to fig. 5, 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 light 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 can generate heat when exceeding the switching temperature at diode 23 in photovoltaic terminal box 100 through setting up protection component 3, carries out the short circuit to diode 23, has avoided diode 23 to be in for a long time and has switched on the state of generating heat, when increasing diode 23's life, has promoted photovoltaic terminal box 100's whole life. Meanwhile, the photovoltaic junction box 100 is simple in structure and has good practicability, and further the photovoltaic module 300 using the photovoltaic junction box 100 has a long service 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 (10)
1. A photovoltaic junction box comprises a shell and a conductive assembly contained in the shell, wherein the conductive assembly comprises a first substrate, a second substrate and a diode used for electrically connecting the first substrate and the second substrate, and the photovoltaic junction box is characterized in that: the photovoltaic junction box further comprises a protection component arranged at the bottom of the shell, the protection component is provided with a first position and a second position different from the first position, and when the protection component is located at the first position, the first substrate and the second substrate are electrically connected through the diode; when the protection component is at the second position, the first substrate and the second substrate are electrically connected through the protection component.
2. The photovoltaic junction box of claim 1, wherein: the protection assembly is located below the diode and includes a connection member and a protection member connected to the connection member.
3. The photovoltaic junction box of claim 2, wherein: the connecting component is a metal riveting component made of metal materials, and the protection component is electrically connected with the first substrate through the metal riveting component.
4. The photovoltaic junction box of claim 2, wherein: the protection component is a thermosensitive protection component made of thermosensitive metal materials, and can be deformed under the heating effect of the diode and switched between the first position and the second position.
5. The photovoltaic junction box of claim 1, wherein: the first substrate is provided with a first connecting part, the first connecting part is formed by bending from the edge of the first substrate towards the direction of the protection component, and the first connecting part penetrates through the shell and is electrically connected with the protection component.
6. The photovoltaic junction box of claim 5, wherein: the first connecting portion is arranged in an L shape and comprises a bending portion and an extending portion, the bending portion extends perpendicular to the first substrate, the extending portion extends from the end portion of the first connecting portion in the direction parallel to the bending portion, and the protection assembly is connected to the extending portion.
7. The photovoltaic junction box of claim 5, wherein: the second substrate is provided with a second connecting part which is arranged corresponding to the first connecting part, the second connecting part is formed by bending from the edge of the second substrate towards the direction of the protection component, and when the protection component is positioned at the second position, the second connecting part is electrically connected with the protection component.
8. The photovoltaic junction box of claim 1, wherein: the shell comprises a main body part, a bottom plate accommodated in the main body part and a top plate clamped above the main body part, wherein the top plate, the main body part and the bottom plate jointly enclose to form an accommodating space for accommodating the conductive assembly.
9. The photovoltaic junction box of claim 8, wherein: the photovoltaic junction box comprises a main body, a bottom plate and a protection assembly, wherein a clamping portion is arranged in the main body, the bottom plate is connected with the main body through the clamping portion, a yielding space is formed between the bottom of the bottom plate and a fixing plane of the photovoltaic junction box, and the protection assembly is accommodated in the yielding space.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022994670.3U CN213817687U (en) | 2020-12-14 | 2020-12-14 | Photovoltaic junction box and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022994670.3U CN213817687U (en) | 2020-12-14 | 2020-12-14 | Photovoltaic junction box and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213817687U true CN213817687U (en) | 2021-07-27 |
Family
ID=76946005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022994670.3U Active CN213817687U (en) | 2020-12-14 | 2020-12-14 | Photovoltaic junction box and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213817687U (en) |
-
2020
- 2020-12-14 CN CN202022994670.3U patent/CN213817687U/en active Active
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