CN110247626B - Water-cooling type junction box for photovoltaic power generation - Google Patents
Water-cooling type junction box for photovoltaic power generation Download PDFInfo
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- CN110247626B CN110247626B CN201910533417.7A CN201910533417A CN110247626B CN 110247626 B CN110247626 B CN 110247626B CN 201910533417 A CN201910533417 A CN 201910533417A CN 110247626 B CN110247626 B CN 110247626B
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- water inlet
- heat dissipation
- diode
- water outlet
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- 238000001816 cooling Methods 0.000 title claims abstract description 13
- 238000010248 power generation Methods 0.000 title claims abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims abstract description 69
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 125
- 238000003825 pressing Methods 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 8
- 239000000110 cooling liquid Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims 3
- 230000000149 penetrating effect Effects 0.000 claims 2
- 239000002826 coolant Substances 0.000 abstract description 12
- 230000008093 supporting effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
- H02S40/345—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes with cooling means associated with the electrical connection means, e.g. cooling means associated with or applied to the junction box
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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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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a water-cooling type junction box for photovoltaic power generation, which comprises an installation box, a circuit assembly and a cover plate, wherein diode pins with different thicknesses can be adapted while the contact between the diode pins and a conductive block is realized. The invention has the advantages of increased heat dissipation contact area, omnidirectional heat conduction and higher heat conduction efficiency, thereby improving the heat dissipation efficiency. The coolant liquid flow structure that second drain through-hole and first drain through-hole formed can balance the temperature at the both ends of diode body, prevents that the both ends difference in temperature of diode body is too big, effectively avoids the local high temperature's of diode the condition. The sealing performance of the junction box can be ensured while effective heat dissipation is realized. The telescopic rod, the telescopic sleeve, the hard telescopic pipe and the hard sleeve have a supporting effect on the junction box body, and compared with an existing junction box, the junction box is higher in strength and pressure resistance.
Description
Technical Field
The invention relates to the field of photovoltaic power generation equipment, in particular to a water-cooling type junction box for photovoltaic power generation.
Background
The photovoltaic junction box is applied to a back plate on the back of a photovoltaic module solar panel, electric energy generated by the battery module is output to an external system through connection of an internal terminal and a module wiring strip, and the electric energy is output to a user or stored for reuse through components such as an electric wire circuit, a controller, an inverter and a storage battery. The inside heat conduction of terminal box is realized just to current terminal box usually with the forced air cooling or fin, and the terminal box is because preventing outdoors, generally need seal installation for the radiating efficiency is not high, and inside diode can produce a large amount of heats when moving, leads to inside temperature higher, and then influences the performance and the life of components and parts.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a water-cooling type junction box for photovoltaic power generation.
The technical problem to be solved by the invention is as follows:
(1) how to improve the heat dissipation efficiency of the junction box on the premise of ensuring the waterproof performance.
The purpose of the invention can be realized by the following technical scheme:
a water-cooling type junction box for photovoltaic power generation comprises a mounting box, a circuit assembly and a cover plate, wherein the circuit assembly comprises a plurality of wiring strips for connecting a photovoltaic assembly, the wiring strips are arranged in parallel, the wiring strips are electrically connected with conductive blocks, pins at two ends of a diode are placed on the conductive blocks of two adjacent wiring strips, a tube body of the diode is placed on a lower heat dissipation assembly, and the lower heat dissipation assembly and the wiring strips are fixedly connected to the inner bottom wall of the mounting box;
the cover plate comprises a sealing plate, the upper surface of the sealing plate is fixedly connected with a main water inlet and a main water outlet, the lower surface of the cover plate is fixedly connected with mounting assemblies which correspond to the diodes one by one, each mounting assembly comprises two pressing assemblies used for clamping pins of the diodes between the diodes and the pressing assemblies and an upper heat dissipation assembly used for limiting a tube body of the diodes between the lower heat dissipation assembly and the upper heat dissipation assembly, and the upper heat dissipation assembly comprises a heat dissipation cover;
a first water inlet hole is formed in one corner of the upper end face of the heat dissipation cover, a first water outlet hole is formed in the diagonal position of the first water inlet hole, a plurality of first upper connecting holes are formed in the heat dissipation cover, and the first upper connecting holes close to the two end faces of the diode tube body are respectively communicated with the first water inlet hole and the first water outlet hole; the lower heat dissipation assembly is internally provided with a first lower connecting hole matched with the first upper connecting hole, the first upper connecting hole and the first lower connecting hole are detachably and hermetically inserted together through a connecting ring fixedly connected at the port of the first upper connecting hole to jointly form a spiral through hole surrounding the diode body, a first water inlet hole, a first water outlet hole, the first upper connecting hole and the first lower connecting hole jointly form a first liquid guide through hole, the upper ends of the first water inlet hole and the first water outlet hole are fixedly inserted with a hard telescopic pipe, the upper end of the hard telescopic pipe is connected with a limiting ring through a second spring, the limiting ring is fixedly connected with the inner side wall of an upper end opening of the hard sleeve, the hard sleeve is movably sleeved on the hard telescopic pipe, the hard sleeve corresponding to the first water inlet hole is communicated with the main water inlet, and the hard sleeve corresponding to the first water outlet hole is communicated with the main water outlet, and the hard sleeve is fixedly connected with the lower end face of the sealing plate.
Further, compress tightly the subassembly still including being used for with the inconsistent insulating clamp plate of diode pin, the upper end fixedly connected with telescopic link of insulating clamp plate, the telescopic link cover is equipped with the telescope tube, and the interior roof of telescope tube is connected with the up end of telescopic link through first spring, telescope tube fixed connection is at the lower terminal surface of closing plate.
Furthermore, the upper end face of the heat dissipation cover is also provided with a second water inlet hole and a second water outlet hole, the second water inlet hole, the second water outlet hole, the first water inlet hole and the first water outlet hole are distributed on the upper end face of the heat dissipation cover in a matrix manner, the second water inlet hole and the second water outlet hole are positioned on the same diagonal angle, the first water inlet hole and the second water inlet hole are respectively positioned at two ends of the diode tube body, a plurality of second upper connecting holes are arranged inside the heat dissipation cover, the second upper connecting holes close to two end faces of the diode tube body are respectively communicated with the second water inlet hole and the second water outlet hole, a second lower connecting hole matched with the second upper connecting hole is arranged inside the lower heat dissipation assembly, the second lower connecting holes of the second upper connecting holes are sealed and spliced together through a connecting ring fixedly connected at the port of the second upper connecting holes to form a spiral through hole surrounding the diode tube body together, and the through-hole of the screw-tupe that connecting hole and second lower connecting hole constitute on the second revolves to the same and crisscross setting with the through-hole of the screw-tupe that first upper connecting hole and first lower connecting hole constitute, connecting hole and second lower connecting hole constitute the second jointly on second inlet opening, second apopore, the upper end of second inlet opening, second apopore is connected with the flexible pipe of stereoplasm, and the flexible pipe of stereoplasm is connected with the stereoplasm sleeve pipe, and the flexible pipe of stereoplasm and stereoplasm sleeve pipe that connect second inlet opening, second apopore and the flexible pipe of stereoplasm and stereoplasm sleeve pipe of connecting first inlet opening, first apopore all the same with the mounting means, and correspond the second inlet opening stereoplasm sleeve pipe and total water inlet through connection correspond the second apopore stereoplasm sleeve pipe and total outlet through connection.
Furthermore, a sealing washer is laid on the side wall of the outer ring of the connecting ring.
Further, the heat dissipation cover and the lower heat dissipation assembly are made of an alumina ceramic material.
The invention has the beneficial effects that:
(1) for the implementation of a waterproof seal: for the implementation of a waterproof seal: the diode is placed on the lower heat dissipation assembly, the pin of the diode is placed on the conductive block, the solar cell panel is connected with the circuit assembly, the cover plate is covered, the junction box is fixedly sealed by glue, and the junction box is fixedly sealed on the back plate of the solar cell panel by glue, so that the whole junction box is in a sealed state, and excellent protection performance can be provided;
(2) through first spring for insulating clamp plate provides pressure, when realizing that diode pin and conducting block keep in touch, through the axial motion of telescopic link, but the diode pin of the different thicknesses of adaptation, and the installation of diode with dismantle compare in current welding and the mode of buckle connection convenient and fast more.
(3) The realization of water cooling and improvement of heat dissipation efficiency: the diode body is completely surrounded by the heat dissipation cover and the lower heat dissipation assembly, so that the heat dissipation contact surface is enlarged, heat can be conducted in all directions, and meanwhile, the heat conduction efficiency is higher due to the use of materials with higher heat dissipation efficiency, so that the heat dissipation efficiency can be improved. The coolant flow structure that the second drain through-hole formed with first drain through-hole for the flow direction of coolant liquid is different, and the coolant liquid in the first drain through-hole flows from a left side to the right side, and the coolant liquid in the second drain through-hole flows from a right side to the left side, and both mutually support, can balance the temperature at the both ends of diode body, prevent that the both ends difference in temperature of diode body is too big, effectively avoid the condition of diode local high temperature, realize effectual heat dissipation.
(4) Because set up telescopic link, telescope tube and stereoplasm flexible pipe, stereoplasm sleeve pipe, have the supporting role to the terminal box body, compare in current terminal box, the intensity and the pressure resistance of box body are also higher.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic diagram of the circuit assembly of the present invention;
FIG. 3 is a schematic diagram of the construction of the hold-down assembly of the diode of the present invention;
FIG. 4 is a schematic structural diagram of an upper heat sink assembly of the diode of the present invention;
FIG. 5 is a schematic view of the internal structure of FIG. 3;
FIG. 6 is a schematic view of the connection between the hard sleeve and the hard telescopic tube in FIG. 4;
FIG. 7 is an assembly view of the diode, lower heat sink assembly and heat sink cap of the present invention;
FIG. 8 is a reverse perspective view of the heat sink cover of FIG. 7;
FIG. 9 is a schematic view of the positions of the first and second drain holes after the lower heat dissipating assembly is connected to the upper heat dissipating assembly;
FIG. 10 is a schematic view of the first fluid conducting via of FIG. 9;
FIG. 11 is a schematic structural view of the second fluid conducting through hole of FIG. 9;
fig. 12 is a schematic view of the connection of the cover plate, hold-down assembly and upper heat sink assembly.
In the figure: the mounting box 1, the circuit module 2, the wiring strip 201, the conductive block 202, the diode 203, the lower heat dissipating module 204, the mounting module 3, the pressing module 301, the insulating pressing plate 3011, the expansion link 3012, the expansion sleeve 3013, the first spring 3014, the upper heat dissipating module 302, the heat dissipating cover 3021, the hard expansion pipe 3022, the hard sleeve 3023, the second spring 3024, the limiting ring 3025, the sealing rubber ring 3026, the first liquid guiding through hole 3027, the first water inlet hole 3027a, the first water outlet hole 3027b, the first upper connecting hole 3027c, the first lower connecting hole 3027d, the second liquid guiding through hole 3028, the second water inlet hole 3028a, the second upper connecting hole 3028c, the second lower connecting hole 3028d, the connecting ring 3029, the cover plate 4, the sealing plate 401, the main water inlet 402, and the main water outlet 403.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-12, the present embodiment provides a water-cooling type junction box for photovoltaic power generation, which includes a mounting box 1, a circuit module 2 and a cover plate 4, wherein the circuit module 2 is electrically connected to an output end of the junction box, the cover plate 4 and the mounting box 1 are sealed and fixed by glue, the mounting box 1 is fixed with the back plate of the solar panel through glue after wiring, the circuit component 2 comprises a plurality of wiring strips 201 for connecting the photovoltaic component, and the wiring strips 201 are arranged in parallel, and the wiring strips 201 are electrically connected with the conductive blocks 202, so as shown in fig. 2, the wiring strips 201 on both sides are only provided with one conductive block 202, and the other two terminal strips 201 are provided with two conductive blocks 202, the two terminal pins of the diode 203 are placed on the conductive blocks 202 of the adjacent two terminal strips 201, the tube body of the diode 203 is placed on the lower heat dissipation assembly 204, and the lower heat dissipation assembly 204 and the wiring strip 201 are fixedly connected to the inner bottom wall of the mounting box 1;
the cover plate 4 comprises a sealing plate 401, a main water inlet 402 and a main water outlet 403 are fixedly connected to the upper surface of the sealing plate 401, cooling liquid can be pumped from the main water inlet 402 through a water pump device connected to the main water inlet 402 and is finally discharged from the main water outlet 403, the lower surface of the cover plate 4 is fixedly connected with mounting assemblies 3 corresponding to the diodes 203 one by one, each mounting assembly 3 comprises two pressing assemblies 301 for clamping pins of the diodes 203 between the diodes 203 and the pressing assemblies 301 and an upper heat dissipation assembly 302 for limiting the tube bodies of the diodes 203 between the lower heat dissipation assembly 204 and the upper heat dissipation assembly 302, heat dissipation silicone grease can be filled in gaps between the lower heat dissipation assembly 204, the upper heat dissipation assembly 302 and the diodes 203 to improve heat dissipation efficiency, and the upper heat dissipation assembly 302 comprises a heat dissipation cover 3021;
a first water inlet hole 3027a is formed in one corner of the upper end surface of the heat dissipation cover 3021 and used for allowing cooling liquid to flow in, a first water outlet hole 3027b is formed in the diagonal position of the first water inlet hole 3027a and used for discharging the cooling liquid, a plurality of first upper connection holes 3027c are formed in the heat dissipation cover 3021, and the first upper connection holes 3027c near the two end surfaces of the diode 203 pipe body are respectively communicated with the first water inlet hole 3027a and the first water outlet hole 3027 b; the lower heat dissipating assembly 204 is internally provided with a first lower connecting hole 3027d matched with the first upper connecting hole 3027c, the first upper connecting hole 3027c and the first lower connecting hole 3027d are detachably, hermetically and spliced together through a connecting ring 3029 fixedly connected to a port of the first upper connecting hole 3027c to form a spiral through hole surrounding the diode 203, so that the diode 203 can be fixed in position, and a sealing gasket is laid on the outer side wall of the connecting ring 3029. As shown in fig. 10, the first water inlet 3027a, the first water outlet hole 3027b, the first upper connecting hole 3027c, and the first lower connecting hole 3027d together form a first liquid guiding through hole 3027, forming a complete passage, the upper ends of the first water inlet hole 3027a and the first water outlet hole 3027b are respectively fixedly inserted with a hard extension tube 3022, the upper end of the hard extension tube 3022 is connected with a limit ring 3025 through a second spring 3024, the limit ring 3025 is fixedly connected to the inner side wall of the upper end opening of the hard sleeve 3023, the hard sleeve 3023 is movably sleeved on the hard extension tube 3022, so that the hard extension tube 3022 and the hard sleeve 3023 make relative movement along the axis, the magnitude of the pressing pressure during installation is controlled by the elastic force of the second spring 3024, the damage to the diode 203 is effectively avoided, the hard sleeve 3023 corresponding to the first water inlet hole 3027a is connected to the main water inlet 402, the hard sleeve 3023 corresponding to the first water inlet hole 3027b is connected to the main water, while a hard sleeve 3023 is fixedly attached to the lower end surface of the sealing plate 401. The coolant enters from the main water inlet 402 and is distributed to each upper heat dissipation assembly 302, the coolant sequentially passes through the hard sleeve 3023, the hard extension tube 3022, the first water inlet hole 3027a, the first upper connection hole 3027c, and the first lower connection hole 3027d to form a spiral through hole and a first water outlet hole 3027b, and finally the coolant discharged from the plurality of upper heat dissipation assemblies 302 is collected to the main water outlet 403 to be discharged. The heat generated by the diode 203 tube in the working process is conducted to the heat dissipation cover 3021 and the lower heat dissipation assembly 204, and then the flowing cooling liquid is discharged from the heat dissipation cover 3021 and the lower heat dissipation assembly 204 after absorbing the heat, so as to realize the function of cooling.
Compress tightly subassembly 301 still including being used for with the inconsistent insulating clamp plate 3011 of diode 203 pin, insulating clamp plate 3011's upper end fixedly connected with telescopic link 3012, telescopic link 3012 cover is equipped with telescopic sleeve 3013, and telescopic sleeve 3013's interior roof is connected with telescopic link 3012's up end through first spring 3014, telescopic sleeve 3013 fixed connection is at the lower terminal surface of closing plate 401. The first spring 3014 provides pressure for the insulating pressing plate 3011, and the pins of the diode 203 with different thicknesses can be adapted through the axial movement of the telescopic rod 3012 while the pins of the diode 203 are kept in contact with the conductive block 202.
The upper end surface of the heat dissipating cap 3021 is further provided with a second water inlet hole 3028a and a second water outlet hole 3028b, the second water inlet hole 3028a, the second water outlet hole 3028b, the first water inlet hole 3027a and the first water outlet hole 3027b are distributed in a matrix on the upper end surface of the heat dissipating cap 3021, the second water inlet hole 3028a and the second water outlet hole 3028b are located on the same diagonal angle, the first water inlet hole 3027a and the second water inlet hole 3028a are respectively located at two ends of the diode 203 body, the heat dissipating cap 3021 is internally provided with a plurality of second upper connecting holes 3028c, the second upper connecting holes 3028c near two end surfaces of the diode 203 body are respectively communicated with the second water inlet hole 3028a and the second water outlet hole 3028b, the lower heat dissipating assembly 204 is internally provided with a second lower connecting hole 3028d matched with the second upper connecting hole 3028c, the second lower connecting hole 3028d of the second upper connecting hole 3028c is fixedly connected to the second upper connecting hole 3028c through a detachable connecting ring 3029 fixedly connected to the second upper connecting hole 3028A through hole of the model type, and the screw-type through hole formed by the second upper connection hole 3028c and the second lower connection hole 3028d and the screw-type through hole formed by the first upper connection hole 3027c and the first lower connection hole 3027d are arranged in the same direction of rotation and in a staggered manner, as shown in fig. 11, the second water inlet hole 3028a, the second water outlet hole 3028b, the second upper connection hole 3028c and the second lower connection hole 3028d together form a second liquid guide through hole 3028, the upper ends of the second water inlet hole 3028a and the second water outlet hole 3028b are connected with a hard extension tube 3022, the hard extension tube 3022 is connected with a hard sleeve 3023, the hard extension tube 3022 and the hard sleeve 3023 connected with the second water inlet hole 3028a and the second water outlet hole 3028b are connected with a hard extension tube 3022 and a hard sleeve 3023 connected with the first water inlet hole 3027a and the first water outlet hole 3027b, the structure and the installation manner are the same, and the hard sleeve 3023 corresponding to the second water inlet 302, a rigid sleeve 3023 corresponding to the second outlet hole 3028b is connected to the main outlet 403. The heat dissipation principle of second drain through hole 3028 and first drain through hole 3027 coolant liquid is the same, second drain through hole 3028 and first drain through hole 3027 are because the flow direction of coolant liquid is different, the coolant liquid in the first drain through hole 3027 flows from left to right, and the coolant liquid in the second drain through hole 3028 flows from right to left, both cooperate with each other, can balance the temperature at the both ends of diode 203 body, prevent that the both ends difference in temperature of diode 203 body is too big, effectively avoid the local high temperature's of diode 203 condition. The sealing performance of the junction box can be ensured while effective heat dissipation is realized.
The heat sink cap 3021 and the lower heat sink 204 are made of alumina ceramic material.
The specific working process of this embodiment is as follows:
1) for the implementation of a waterproof seal: placing a diode 203 on the lower heat dissipation assembly 204, placing pins of the diode 203 on the conductive blocks 202, connecting the solar panel with the circuit assembly 2, covering the cover plate 4, and fixedly sealing by glue, and fixedly sealing the junction box on a back plate of the solar panel by glue;
2) the realization of the water-cooling heat dissipation effect: when the cover plate 4 is covered, the insulating press plate 3011 contacts with the pins of the diode 203 below, the pins of the diode 203 are kept in contact with the conductive block 202 due to the elastic force of the first spring 3014, and the heat dissipation cover 3021 is inserted into the lower heat dissipation assembly 204 through the connection ring 3029, so that the position of the diode 203 is fixed, and the complete second liquid guiding through hole 3028 and the complete first liquid guiding through hole 3027 are formed, so as to connect the whole flow path of the cooling liquid. When the junction box works, the main water inlet 402 is connected with a water pump, low-temperature cooling water is pumped into the main water inlet 402, is shunted to the second liquid guiding through holes 3028 and the first liquid guiding through holes 3027 corresponding to the diodes 203, absorbs heat emitted by the diodes 203, and then is collected to the main water outlet 403 to be discharged.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (1)
1. The water-cooling type junction box for photovoltaic power generation comprises a mounting box (1), circuit components (2) and a cover plate (4), and is characterized in that the circuit components (2) comprise a plurality of wiring strips (201) used for being connected with the photovoltaic components, the wiring strips (201) are arranged in parallel, the wiring strips (201) are electrically connected with conductive blocks (202), pins at two ends of a diode (203) are placed on the conductive blocks (202) of two adjacent wiring strips (201), a tube body of the diode (203) is placed on a lower heat dissipation component (204), and the lower heat dissipation component (204) and the wiring strips (201) are fixedly connected to the inner bottom wall of the mounting box (1);
the cover plate (4) comprises a sealing plate (401), the upper surface of the sealing plate (401) is fixedly connected with a main water inlet (402) and a main water outlet (403), the lower surface of the cover plate (4) is fixedly connected with mounting assemblies (3) which correspond to the diodes (203) one by one, each mounting assembly (3) comprises two pressing assemblies (301) for clamping pins of the diodes (203) between the diodes (203) and the pressing assemblies (301) and an upper heat dissipation assembly (302) for limiting a tube body of the diodes (203) between the lower heat dissipation assembly (204) and the upper heat dissipation assembly (302), and the upper heat dissipation assembly (302) comprises a heat dissipation cover (3021);
a first water inlet hole (3027a) is formed in one corner of the upper end face of the heat dissipation cover (3021), a first water outlet hole (3027b) is formed in the diagonal position of the first water inlet hole (3027a), a plurality of first upper connection holes (3027c) are formed in the heat dissipation cover (3021), and the first upper connection holes (3027c) close to the two end faces of the diode body (203) are respectively communicated with the first water inlet hole (3027a) and the first water outlet hole (3027 b); the lower heat dissipation assembly (204) is internally provided with a first lower connecting hole (3027d) matched with the first upper connecting hole (3027c), the first upper connecting hole (3027c) and the first lower connecting hole (3027d) are detachably and hermetically inserted into a connecting ring (3029) fixedly connected to a port of the first upper connecting hole (3027c) to form a spiral through hole surrounding the diode (203) body, the first water inlet hole (3027a), the first water outlet hole (3027b), the first upper connecting hole (3027c) and the first lower connecting hole (3027d) jointly form a first liquid guide through hole (3027), the upper ends of the first water inlet hole (3027a) and the first water outlet hole (3027b) are fixedly inserted into a hard telescopic pipe (3022), the upper end of the hard telescopic pipe (3022) is connected with a limit ring (3025) through a second spring (3024), and the limit ring (3025) is fixedly connected to the inner side wall of the upper end opening of the hard sleeve (3023), the hard sleeve (3023) is movably sleeved on the hard telescopic pipe (3022), the hard sleeve (3023) corresponding to the first water inlet hole (3027a) is communicated with the main water inlet (402), the hard sleeve (3023) corresponding to the first water outlet hole (3027b) is communicated with the main water outlet (403), and meanwhile, the hard sleeve (3023) is fixedly connected to the lower end surface of the sealing plate (401);
the pressing assembly (301) further comprises an insulating pressing plate (3011) which is used for abutting against pins of the diode (203), the upper end of the insulating pressing plate (3011) is fixedly connected with a telescopic rod (3012), the telescopic rod (3012) is sleeved with a telescopic sleeve (3013), the inner top wall of the telescopic sleeve (3013) is connected with the upper end face of the telescopic rod (3012) through a first spring (3014), and the telescopic sleeve (3013) is fixedly connected to the lower end face of the sealing plate (401);
the upper end face of the heat radiation cover (3021) is further provided with a second water inlet hole (3028a) and a second water outlet hole (3028b), the second water inlet hole (3028a), the second water outlet hole (3028b), the first water inlet hole (3027a), and the first water outlet hole (3027b) are distributed in a matrix manner on the upper end face of the heat radiation cover (3021), the second water inlet hole (3028a) and the second water outlet hole (3028b) are located on the same diagonal angle, the first water inlet hole (3027a) and the second water inlet hole (3028a) are respectively located at two ends of the diode body (203), the heat radiation cover (3021) is internally provided with a plurality of second upper connection holes (3028c), the second upper connection holes (3028c) close to two end faces of the diode body (203) are respectively communicated with the second water inlet hole (3028a) and the second water outlet hole (3028b), the lower connection hole (204) is internally provided with a second lower connection hole (3028d) matched with the second upper connection hole (3028c), the second lower connecting hole (3028d) of the second upper connecting hole (3028c) is detachably and hermetically inserted together through a connecting ring (3029) fixedly connected to a port of the second upper connecting hole (3028c) to form a spiral through hole surrounding the diode (203), the spiral through hole formed by the second upper connecting hole (3028c) and the second lower connecting hole (3028d) and the spiral through hole formed by the first upper connecting hole (3027c) and the first lower connecting hole (3027d) have the same rotating direction and are arranged in a staggered manner, the second water inlet hole (3028a), the second water outlet hole (3028b), the second upper connecting hole (3028c) and the second lower connecting hole (3028d) together form a second liquid guide through hole (3028), the upper ends of the second water inlet hole (3028a) and the second water outlet hole (3028b) are connected with a hard telescopic pipe (3022), and the hard telescopic pipe (3023) is connected with the hard telescopic pipe (3022), the structure and the installation mode of a hard telescopic pipe (3022) and a hard sleeve (3023) which are connected with the second water inlet hole (3028a) and the second water outlet hole (3028b) are the same as those of the hard telescopic pipe (3022) and the hard sleeve (3023) which are connected with the first water inlet hole (3027a) and the first water outlet hole (3027b), the hard sleeve (3023) corresponding to the second water inlet hole (3028a) is connected with the main water inlet (402) in a penetrating manner, and the hard sleeve (3023) corresponding to the second water outlet hole (3028b) is connected with the main water outlet (403) in a penetrating manner;
a sealing gasket is laid on the side wall of the outer ring of the connecting ring (3029);
the heat dissipation cover (3021) and the lower heat dissipation assembly (204) are made of alumina ceramic material;
for the implementation of a waterproof seal: placing a diode (203) on a lower heat dissipation assembly (204), placing pins of the diode (203) on a conductive block (202), connecting a solar panel with a circuit assembly (2), covering a cover plate (4), fixing and sealing through glue, and fixing and sealing a junction box on a back plate of the solar panel through glue;
the realization of the water-cooling heat dissipation effect: when the cover plate (4) is covered, the insulating pressing plate (3011) is abutted to the pins of the diode (203) below, the pins of the diode (203) are kept in contact with the conductive block (202) due to the elasticity of the first spring (3014), meanwhile, the heat dissipation cover (3021) is inserted into the lower heat dissipation assembly (204) through the connecting ring (3029), so that the position of the diode (203) is fixed, and meanwhile, a complete second liquid guide through hole (3028) and a complete first liquid guide through hole (3027) are formed, and further, the whole flow path of the cooling liquid is communicated;
when the junction box works, the main water inlet (402) is connected with a water pump, low-temperature cooling water is pumped into the main water inlet (402) and is shunted to the second liquid guide through holes (3028) and the first liquid guide through holes (3027) corresponding to the diodes (203), and heat emitted by the diodes (203) is absorbed and collected to the main water outlet (403) to be discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910533417.7A CN110247626B (en) | 2019-06-19 | 2019-06-19 | Water-cooling type junction box for photovoltaic power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910533417.7A CN110247626B (en) | 2019-06-19 | 2019-06-19 | Water-cooling type junction box for photovoltaic power generation |
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| Publication Number | Publication Date |
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| CN110247626A CN110247626A (en) | 2019-09-17 |
| CN110247626B true CN110247626B (en) | 2020-11-27 |
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| CN202190230U (en) * | 2011-09-23 | 2012-04-11 | 昆山捷讯腾精密电子科技有限公司 | Solar photovoltaic connecting box |
| CN204332565U (en) * | 2015-01-22 | 2015-05-13 | 河南中科起重电气有限公司 | A kind of Novel resistor |
| CN106449564B (en) * | 2016-12-01 | 2019-03-19 | 中山市恒能电子科技有限公司 | A kind of high current rectification heat dissipation equipment |
| CN208112251U (en) * | 2018-05-07 | 2018-11-16 | 北京金风科创风电设备有限公司 | (PCC) power, wind power generating set and wind power plant |
| CN108988780A (en) * | 2018-08-28 | 2018-12-11 | 湖州景盛新能源有限公司 | A kind of photovoltaic junction box improving radiating efficiency |
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