CN219577000U - A high-efficient heat dissipation terminal box for solar module - Google Patents
A high-efficient heat dissipation terminal box for solar module Download PDFInfo
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- CN219577000U CN219577000U CN202223147028.7U CN202223147028U CN219577000U CN 219577000 U CN219577000 U CN 219577000U CN 202223147028 U CN202223147028 U CN 202223147028U CN 219577000 U CN219577000 U CN 219577000U
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- radiating fin
- junction box
- diode
- wiring groove
- solar module
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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 discloses a high-efficiency heat-dissipation junction box for a solar module, which comprises the following components: the box cover and the base are provided with a wiring groove, and the size of the notch of the box cover is matched with that of the wiring groove; the diode and the metal radiating fins are arranged in the wiring groove, the total number of the two metal radiating fins is two, the left radiating fin connected with the positive pole pin of the diode and the right radiating fin connected with the negative pole pin of the diode are respectively arranged, and two through bus strap access holes are symmetrically arranged on the groove bottom; two connectors are arranged at two ends of the wiring groove, the two connectors are respectively an anode connector and a cathode connector, the anode connector is connected with the anode of the diode through a left radiating fin, and the cathode connector is connected with the cathode of the diode through a right radiating fin; and heat-dissipation insulating glue filled in the whole wiring groove is also poured into the junction box. Through the mode, the heat dissipation efficiency of the bypass diode can be effectively enhanced, and the service life of the junction box is remarkably prolonged.
Description
Technical Field
The utility model relates to the field of photovoltaic modules, in particular to a high-efficiency heat dissipation junction box for a solar module.
Background
The hot spot effect refers to the energy generated by the shaded portion of the series branch of the photovoltaic module that will be used as a load to consume other illuminated photovoltaic modules. The shielded photovoltaic modules may locally heat up to form hot spots when acting as a load. This effect can seriously damage the structure of the photovoltaic module, reducing the service life of the photovoltaic module. In order to solve the effect of the hot spot effect, diodes are usually used in the cell assembly in anti-parallel connection with two ends of the solar silicon cell sheet group to prevent the silicon cell sheet from burning out due to the hot spot effect, and the diodes are called bypass diodes and are important components of the photovoltaic assembly. With the continuous increase of the power of the photovoltaic module, the working current of the single module is also continuously increased. The original bypass diode design, which takes a light and thin copper sheet as a conductor and also plays a role in heat dissipation, has gradually failed to meet the heat dissipation requirement of the bypass diode used in the assembly of the high current such as 210.
Disclosure of Invention
The utility model mainly solves the technical problem of providing the high-efficiency heat dissipation junction box, which can prolong the service life of the bypass diode.
In order to solve the technical problems, the utility model adopts a technical scheme that: provided is a high-efficiency heat-dissipation junction box for a solar module, the high-efficiency heat-dissipation junction box for a solar module including: the box cover is matched with the slot opening of the wiring groove in size, a plurality of clamping blocks are arranged on the slot wall of the wiring groove, and matched clamping ports are arranged at corresponding positions on the box cover; the diode and the metal radiating fins are arranged in the wiring groove, the two metal radiating fins are respectively a left radiating fin and a right radiating fin, the left radiating fin and the right radiating fin are fixed at the groove bottom of the wiring groove in a chiral symmetry manner, the left radiating fin is connected with a positive pole pin of the diode, the right radiating fin is connected with a negative pole pin of the diode, two through bus strap access holes are symmetrically arranged on the groove bottom, namely a bus strap left access hole and a bus strap right access hole, when the junction box is assembled, one bus strap penetrates into the junction box from the bus strap left access hole and is connected with the left radiating fin, and the other bus strap penetrates into the junction box from the bus strap right access hole and is connected with the right radiating fin; two connectors are arranged at two ends of the wiring groove, the two connectors are respectively an anode connector and a cathode connector, the anode connector is connected with the anode of the diode through a left radiating fin, and the cathode connector is connected with the cathode of the diode through a right radiating fin; and heat-dissipation insulating glue filled in the whole wiring groove is also poured into the junction box.
In a preferred embodiment of the present utility model, the metal heat sink is an aluminum sheet, and the surface of the pin of the diode is soldered on the metal heat sink after being plated with tin.
In a preferred embodiment of the utility model, the two pins of the diode are flattened and then used as solder connection posts to be soldered with corresponding metal heat sinks.
In a preferred embodiment of the present utility model, each metal heat sink comprises a substrate and a manifold, the manifold is connected with the substrate, a bus bar connecting gap is left between the substrate and the manifold, a through heat sink mounting hole is arranged on the substrate, a glue injection positioning hole is arranged on the manifold, a positioning slot hole matched with the heat sink mounting hole in position is arranged on the bottom of the slot, and a screw penetrates through the heat sink mounting hole to fix the metal heat sink on the corresponding positioning slot hole, wherein the bus bar connecting gap is just above the bus bar access hole.
In a preferred embodiment of the utility model, a glue injection buffer cavity is arranged at one side of the junction box, and a partition board structure is arranged in the glue injection cavity. And the metal radiating fin on one side of the glue injection buffer cavity is provided with an extension connecting piece, and the connector lug on the corresponding side is connected with the corresponding metal radiating fin through the extension connecting piece.
The beneficial effects of the utility model are as follows: the utility model is an improvement on the structure of the existing bypass diode junction box, and by connecting the radiating fins with good radiating performance in series on the connecting lines in the junction box, the whole radiating area is increased, and the heat generated during the operation of the diode can be rapidly dissipated into the whole system of insulating radiating glue poured in the junction box in a heat exchange mode, so that the radiating efficiency of the diode is effectively improved, the performance requirement of a high-power photovoltaic module on the bypass diode is met, and the service life of the junction box is prolonged.
Drawings
FIG. 1 is a schematic top view of a preferred embodiment of the present utility model with the lid removed;
FIG. 2 is a schematic top view of the base structure of the illustrated embodiment;
FIG. 3 is a schematic view of the lid structure of the illustrated embodiment;
FIG. 4 is a schematic diagram of a diode structure in the illustrated embodiment;
FIG. 5 is a schematic view of a metal heat sink structure in the illustrated implementation;
the components in the drawings are marked as follows:
1. the LED lamp comprises a box cover, a base, a diode, a left radiating fin, a right radiating fin, an extension connecting piece, a positive electrode connector lug and a negative electrode connector lug, wherein the base is arranged on the box cover;
201. the device comprises a wiring groove, a groove wall, a left junction hole of a converging belt, a right junction hole of the converging belt, a baffle plate structure, a front clamping block, a rear clamping block, a right positioning groove hole and a left positioning groove hole, wherein the groove wall is formed in the groove wall, the left junction hole of the converging belt is formed in the converging belt, the right junction hole of the converging belt is formed in the converging belt, the baffle plate structure is formed in the baffle plate structure, the front clamping block is formed in the baffle plate structure;
301. diode body, 302. Positive pin, 303. Negative pin;
401. left base plate, 402, left manifold, 403, left radiating fin mounting hole, 404, left glue injection positioning hole;
501. right substrate, 502, right manifold, 503, right heat sink mounting holes, 504, right glue injection positioning holes.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1 to 5, the content of the embodiment of the present utility model includes:
a high efficiency heat dissipating junction box for a solar module, the high efficiency heat dissipating junction box for a solar module comprising: the junction box comprises a box cover 1 and a base 2, wherein a wiring groove 201 is formed in the base 2, the box cover 1 is matched with the notch of the wiring groove 201 in size, a front clamping block 206 and a rear clamping block 207 are formed in the groove wall 202 of the wiring groove 201, a matched front clamping interface and a matched rear clamping interface are formed in corresponding positions on the box cover 1, the whole wiring groove 201 can be just covered when the box cover 1 is installed, the clamping blocks and the clamping interfaces are mutually fixed, a diode 3 and a metal radiating fin are installed in the wiring groove 201, the metal radiating fin is divided into two pieces, namely a left radiating fin 4 and a right radiating fin 5, the left radiating fin 4 and the right radiating fin 5 are symmetrically fixed at the groove bottom of the wiring groove 201 in a chiral mode, the left radiating fin 4 is welded with a positive pin 302 of the diode 3, the right radiating fin 5 is welded with a negative pin 303 of the diode 3, a bus strap left access hole 203 and a bus strap right access hole 204 are symmetrically formed in the groove bottom, and one bus strap penetrates into the wiring box 203 from the left junction box 203 to the other bus strap 204 when the junction box is assembled, and the bus strap penetrates into the bus strap 204 from the other junction box 204 to the right junction box; two connector lugs are further mounted at two ends of the wiring groove 201, the two connector lugs are respectively an anode connector lug 7 and a cathode connector lug 8, the anode connector lug 7 is connected with the anode of the diode 3 through the left radiating fin 4, and the cathode connector lug 8 is connected with the cathode of the diode 3 through the right radiating fin 5; and heat-dissipation insulating glue filled in the whole wiring groove 201 is also filled in the junction box.
The metal radiating fin is an aluminum sheet, and the pin surface of the diode 3 is welded on the metal radiating fin after tin plating. The purpose of the tin plating of the surface of the pin 3 of the diode is to prevent the primary cell reaction from occurring and to influence the service life of the junction box.
The two pins of the diode 3 are flattened and then used as welding connection posts to be welded with corresponding metal cooling fins. The flattened pins are directly used as welding binding posts, so that the welding reliability is improved, the traditional multi-pass welding connection is avoided, the welding surface is large, and the contact resistance can be obviously reduced; heat is efficiently conducted to the metal heat sink.
The left radiating fin 4 comprises a left substrate 401 and a left manifold piece 402, the left manifold piece is connected with the left substrate, a bus bar connecting gap is reserved between the left substrate 401 and the left manifold piece 402, 2 through left radiating fin mounting holes 403 are formed in the left substrate 401, left glue injection positioning holes 404 are formed in the left manifold piece 402, left positioning slots 209 matched with the left radiating fin 4 in position are formed in the bottom of the slots, screws penetrate through the left radiating fin mounting holes 403 to fix the left substrate 401 on the left positioning slots 209, and at the moment, the bus bar connecting gap is just on the bus bar left access holes 203. The right radiating fin 5 comprises a right substrate 501 and a right manifold piece 502, the right manifold piece 502 is connected with the right substrate 501, a bus bar connecting gap is reserved between the right substrate 501 and the right manifold piece 502, 2 through right radiating fin mounting holes 503 are formed in the right substrate 501, right glue injection positioning holes 504 are formed in the right manifold piece 502, right positioning slots 208 matched with the right radiating fin mounting holes 503 are formed in the bottom of the slots, screws penetrate through the right radiating fin mounting holes 503 to fix the right substrate 501 on the right positioning slots 508, and at the moment, the bus bar connecting gap is just above the bus bar right access holes 204. Through the above mode, the metal radiating fin can be fixed at the bottom of the wiring groove 201, then the bus bar is stably connected to the two manifold plates, and the manifold plates can also keep a stable connection structure after the insulating heat dissipation glue is solidified due to the fact that the manifold plates are further provided with through glue injection positioning holes.
And a glue injection buffer cavity is formed in the right side of the junction box, and a partition plate structure 205 is installed in the glue injection cavity. The right heat sink 5 is provided with an extension tab 6, and the negative electrode tab 8 on the corresponding side is connected to the right heat sink 5 through the extension tab 6. The effect of setting up injecting glue buffer chamber is that glue is collected earlier in the buffer chamber when pouring glue and is pushed to diode installation region again, can effectively reduce the injecting glue like this and produce the bubble, improve injecting glue quality, because the buffer chamber has certain volume, so need install extension tab 6 and be connected with negative pole connector lug 8 on right substrate 5, the baffle structure 205 of injecting glue buffer intracavity installation can reduce glue total usage on the one hand, reduction in production cost, on the other hand can improve injecting glue runner structure, improve injecting glue quality, reduce the air admission.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (6)
1. A high efficiency heat dissipating junction box for a solar module, the high efficiency heat dissipating junction box for a solar module comprising: the box cover is matched with the slot opening of the wiring groove in size, a plurality of clamping blocks are arranged on the slot wall of the wiring groove, and matched clamping ports are arranged at corresponding positions on the box cover; the diode and the metal radiating fins are arranged in the wiring groove, the two metal radiating fins are respectively a left radiating fin and a right radiating fin, the left radiating fin and the right radiating fin are fixed at the groove bottom of the wiring groove in a chiral symmetry manner, the left radiating fin is connected with a positive pole pin of the diode, the right radiating fin is connected with a negative pole pin of the diode, two through bus strap access holes are symmetrically arranged on the groove bottom, namely a bus strap left access hole and a bus strap right access hole, when the junction box is assembled, one bus strap penetrates into the junction box from the bus strap left access hole and is connected with the left radiating fin, and the other bus strap penetrates into the junction box from the bus strap right access hole and is connected with the right radiating fin; two connectors are arranged at two ends of the wiring groove, the two connectors are respectively an anode connector and a cathode connector, the anode connector is connected with the anode of the diode through a left radiating fin, and the cathode connector is connected with the cathode of the diode through a right radiating fin; and heat-dissipation insulating glue filled in the whole wiring groove is also poured into the junction box.
2. The high efficiency heat dissipating junction box for a solar module of claim 1, wherein the metal heat sink is an aluminum sheet, and the pin surface of the diode is soldered to the metal heat sink after being tin plated.
3. A high efficiency heat spreading junction box for a solar module according to claim 1 wherein two pins of said diode are flattened and then used as solder connection posts to be soldered to corresponding metal heat sinks.
4. The efficient heat-dissipating junction box for a solar module according to claim 1, wherein each metal heat sink comprises a substrate and a manifold, the manifold is connected with the substrate, a bus bar connecting gap is reserved between the substrate and the manifold, a through heat sink mounting hole is arranged on the substrate, a glue-injecting positioning hole is arranged on the manifold, a positioning slot hole matched with the heat sink mounting hole in position is arranged on the slot bottom, a screw penetrates through the heat sink mounting hole to fix the metal heat sink on the corresponding positioning slot hole, and the bus bar connecting gap is just above the bus bar access hole.
5. The high-efficiency heat-dissipating junction box for a solar module according to claim 1, wherein a glue injection buffer cavity is arranged on one side of the junction box, and a partition plate structure is installed in the glue injection buffer cavity.
6. The high-efficiency heat-dissipating junction box for a solar module according to claim 5, wherein the metal heat-dissipating fin on the side of the glue-injected buffer chamber is provided with an extension tab, and the terminal on the corresponding side is connected to the corresponding metal heat-dissipating fin through the extension tab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223147028.7U CN219577000U (en) | 2022-11-26 | 2022-11-26 | A high-efficient heat dissipation terminal box for solar module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223147028.7U CN219577000U (en) | 2022-11-26 | 2022-11-26 | A high-efficient heat dissipation terminal box for solar module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219577000U true CN219577000U (en) | 2023-08-22 |
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ID=87672139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223147028.7U Active CN219577000U (en) | 2022-11-26 | 2022-11-26 | A high-efficient heat dissipation terminal box for solar module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219577000U (en) |
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2022
- 2022-11-26 CN CN202223147028.7U patent/CN219577000U/en active Active
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