CN104104329B - The heat dissipating junction box of electric isolution - Google Patents
The heat dissipating junction box of electric isolution Download PDFInfo
- Publication number
- CN104104329B CN104104329B CN201410347742.1A CN201410347742A CN104104329B CN 104104329 B CN104104329 B CN 104104329B CN 201410347742 A CN201410347742 A CN 201410347742A CN 104104329 B CN104104329 B CN 104104329B
- Authority
- CN
- China
- Prior art keywords
- rosette
- room
- heat abstractor
- photovoltaic panel
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 5
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims 1
- 229920003023 plastic Polymers 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000000903 blocking Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 210000004907 Glands Anatomy 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003219 poly( p-phenylene oxide) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The present invention relates to the heat dissipating junction box of electric isolution.A kind of for realizing being electrically connected to the rosette of photovoltaic panel.Rosette has two rooms, including the first Room and the second Room and two total walls by two rooms isolation in rooms.Wall may be adapted to have the electrical connection through it.Two lids are suitable to seal two rooms respectively.Two lids are located relative to the opposite side of the rosette of photovoltaic panel.Using the different sealing technique of the sealing of varying level, two lids can be attachable.First Room may be adapted to circuit board for receiving.Rosette can include the supporter for fitting printed circuit board in the first chamber.Second Room is configurable for the electrical connection of photovoltaic panel.Metal cooling device can be bonded to the first chamber interior.First Room is suitable to receive the circuit board for electrical power conversion, and metal cooling device is suitable to the heat that dissipating circuit plate generates.
Description
The application is filing date on May 24th, 2010, Application No. 201080021018.X, invention entitled " electricity every
From heat dissipating junction box " the divisional application of application.
Technical field
The present invention relates to the rosette of a kind of power supply, and especially, relate to a kind of for electrically connecting to photovoltaic panel
Rosette.
Background technology
Photovoltaic module or photovoltaic panel are the complete interconnecting assemblies of photovoltaic cell, and photovoltaic cell is also referred to as solar-electricity
Pond.Owing to single photovoltaic module can only produce limited amount power, therefore commercial apparatus includes multiple module or panel, they strings
Connection and interconnected in parallel are photovoltaic array.It is arranged in series electrical connection to reach desired output voltage and/or to be arranged in parallel electrical connection
To provide the current sourcing capability of desired amount.Photovoltaic devices generally includes photovoltaic module array, inverter, battery and interconnection line.
When part photovoltaic module is blocked, the battery blocked is had not produce the battery being blocked with nothing electricity as much
Stream.Owing to photovoltaic cell is connected in series, then the electric current of equivalent must flow through each battery being connected in series.Unscreened battery
Make the battery blocked by more electric current.The unique channel having the battery blocked to work under high currents is at negative electricity
The regional work of pressure, this will cause the clean voltage loss of system.Electric current is multiplied by this negative voltage and draws what the battery blocked produced
Negative power.There is the battery blocked that for heat and power dissipation is caused " hot spot ".Therefore, by bypass diode and photovoltaic module collection
Become to avoid the overheated of battery in the case of the partial occlusion of photovoltaic module.
Can by blocking diode and battery or block coupled in series to block the reverse leakage current back through module, thus
Block the electric current of battery night flow counterflow through module or block the module that the electric current of parallel module is reverse flowed to damage by day.
Can will perform the electricity conversion to direct current conversion of such as direct current (DC), the electric inversion of the most micro-inverter or such as
The electronic module of performance monitoring and/or other thief-proof functions is integrated with photovoltaic module.
US7291036 discloses the photovoltaic connection system connecting box on a kind of surface including having and installing diode, and two
Pole pipe is arranged on the printed circuit board (PCB) connected in box.Connect box and include being arranged on the metal of the cover inside connecting box alternatively
Flat board, as from the heat abstractor of diode radiating.
Term used herein " cable feedthrough " refers to for entering setting of electric device for power cable or electric wire
Standby, for firmly fixing the power cable entering an electric device.
Term " in situ " in present disclosure refers to during the manufacture process of part during such as injection mo(u)lding
Combination or connection rather than the connection after the manufacture of this part.
Summary of the invention
According to the present invention, it is provided that there is the rosette of a kind of electrical connection for realizing photovoltaic panel.Rosette has two
Individual room, including the first Room and the second Room and two total walls by two rooms isolation in rooms.Wall may be adapted to have through its
Electrical connection.Two lids are suitable to seal two rooms respectively.Two lids are configured in the phase of the rosette relative to photovoltaic panel
Offside.Using different sealing technologies, two lids can be attachable.One in lid may be adapted to seal first
Room, and another lid can seal the second Room with the sealing different from the sealing level of the first Room.First Room can be fitted
Circuit board in the electrical power conversion receiving the power output for photovoltaic panel.Rosette can include in the first chamber
The supporter of fitting printed circuit board.Second Room is configurable for the electrical connection of photovoltaic panel.Second Room can be alternatively
It is configured to include such as bypassing and/or the diode of blocking diode.Rosette can have and is arranged on the second chamber interior
Electric connection terminal, is used for connecting the circuit to photovoltaic panel.Metal cooling device can be bonded to the first chamber interior.First Room
Be suitable to receive the circuit board for electrical power conversion, and metal cooling device is suitable to the heat that dissipating circuit plate generates.In wiring
In the manufacture process of box, heat abstractor is positioned at the inside of injection mold.Heat abstractor is in the injection mo(u)lding work of the manufacture of rosette
By cast-in-place during skill.Rosette can also include being suitable to providing between circuit board and metal cooling device conduction of heat and
The liner of electric insulation.Metal cooling device can include being suitable to preventing the mutually isolated dovetail of metal cooling device and rosette
Tenon structure.Dovetail structure can be hollow.
According to the present invention, it is provided that there is the rosette of a kind of electrical connection for realizing photovoltaic panel.Rosette has former
Position is combined in the metal cooling device of the first chamber interior.First Room is suitable to receive the circuit board for electrical power conversion, Yi Jijin
Belong to heat abstractor and be suitable to the heat that dissipating circuit plate generates.Alternatively, rosette can have two rooms, including the first Room and second
Room, two total walls by two room isolation in room.Two lids, said two lid is suitable to seal said two room respectively.Gold
Belong to heat abstractor and can include being suitable to preventing the mutually isolated dovetail structure of metal cooling device and rosette.Wall can have
There is the electrical connection through it.
Accompanying drawing explanation
With reference to accompanying drawing, only by the way of example, it is described herein the present invention, wherein:
Figure 1A and 1B shows the isometric chart of rosette according to the embodiment of the present invention.
Fig. 2 A shows the details in the cross section of the rosette that the dotted line XX in Figure 1A represents.
Fig. 2 B shows the details of the cross section YY of the rosette that the dotted line in Figure 1A represents.
Fig. 3 A and 3B shows the isometric chart of the heat abstractor according to another embodiment of the present invention.
When considered in conjunction with the accompanying drawings, according to detailed description below, above and/or other aspects will be apparent from.
Detailed description of the invention
Reference will be made in detail now embodiments of the invention, shown in the drawings of the example of the present invention, the most whole diagram
In identical reference number refer to identical element.Embodiment is described to explain the present invention below by way of referenced in schematic.
Dissipated by foreword, the diode being connected in the rosette of photovoltaic module and/or electronic module hot.When using absolutely
During edge rosette, heat must mainly be dissipated by the air of junction box.When using metallic wiring box, then heat can be direct
Dissipated by rosette.But, owing to by regulation, the metal surface easily encountered needs ground connection and needs extra wiring, therefore
It is inconvenient for using metallic wiring box.
Before explaining embodiments of the invention in detail, it will be appreciated that the invention is not restricted to described in it is described below
Or illustrated go out the design of parts and the application of details of configuration.The present invention can be adapted to other embodiments or can
Realize in every way or perform.And, it will be appreciated that word used herein and term be for illustration purposes and
It is not construed as restrictive.
Referring now to diagram, according to the embodiment of the present invention, Figure 1A shows the isometric chart 10A of rosette 12.Illustrate
Rosette 12 is arranged on the back side (or non-photovoltaic side) 4 of photovoltaic panel 16.Rosette 12 has and allows the interior of rosette 12
The cable feedthrough 130 of the termination of the cable in portion.Rosette 12 has outer casing 102 and uses lid 106 to enter rosette 12
Entrance.
Figure 1B shows the isometric chart of the bottom surface of the rosette 12 from photovoltaic panel 16 separation.This equidistantly illustrates wiring
The gland 130 of box 12 and two parts A and B.Room A is defined by dimension Z x X and room A is covered by lid 108.Lid 108 gives
Enter the entrance of the room A of rosette 12.Room B is an open portion defined by X x Y dimension, and shows terminal 104.
Bypass diode 110 is connected between terminal 104.According to inventive feature, it is removed to enter lid 106 He of room B
The opposite side of rosette 12 it is positioned at for entering the lid 108 of room A.
Fig. 2 A shows the details of the cross section XX of the rosette 12 that the dotted line in Figure 1A represents, shows the spy of the present invention
Levy.Cross section XX shows room part A and the B of the rosette 12 being arranged on the non-photovoltaic side 4 of photovoltaic panel 16 with clamp 216.
Between rosette 12 and photovoltaic panel 16, use the mechanical connection of clamp 216 to make the rosette 12 on photovoltaic panel 16 to be
Flat and pad may be used for the opening of closed chamber B.
Room A includes circuit board 260, conduction of heat liner 262, heat abstractor 264, outer casing 102 and lid 108.Preferably,
Circuit board 260 is installed on the supporter being suitable to circuit board for receiving 260.Heating pad 262 is at heat abstractor 264 and circuit board
Electric isolution and conduction of heat are provided between 260.Preferably, the components side of circuit board 260 contacts with heating pad 262 so that circuit board
The heat that the assembly of 260 produces is dissipated by heat abstractor 264 via heating pad 262.By making the side of lid 108 apply conducting screen
Cover Radio frequency interference (RFI) radiation of layer rosette 12 that 108a reduction causes due to the operation of circuit board 260.Screen layer 108a electricity
It is connected to heat abstractor 264 to form the faraday cup of the RFI stoping rosette 12.
Preferably, lid 108 according to an aspect of the present invention is manufactured by injection molding process.At lid 108
During injection molding process, screen layer 108a can be placed in situ and be attached to during injection molding process
Lid 108.Thus, when lid 108 is connected to box room A, rosette 12 by heat abstractor 264 and screen layer 108a electricity every
From.Additionally, outer casing 102 and lid 108 provide between the outside of the back side of panel 16 and rosette 12 heat abstractor 264 and
The non-conductive isolation of screen layer 108a.Alternatively, lid 108 permanently and/or is hermetically sealed to room A.
Room B includes terminal 104, supporter 214, bypass diode 110, lid 106, busbar 212 and wall 202.Wall 202
Physical isolation is provided between room part A and B.Being electrically connected between the circuit board 260 in the A of room and the electric connector 104 in the B of room
Connect is via busbar 212.Busbar 212 is sealed in wall 202, adopt in such a way with protection room A desired close
Envelope property avoids such as water or dampness to penetrate into.Electric connector 104 and busbar 212 both mechanically support with supporter 214.?
Support thing 214 can also be connected to busbar 212 adapter 104 one end and be connected to photovoltaic panel 16 provide junction point
Adapter 104 the other end between sealing and/or the electric isolution of sealing are provided.It is connected to bypass two pole of adapter 104
Pipe 110 may be located between the back side 4 of supporter 214 or panel 16 or between supporter 214 and lid 106.Lid
106 entrances giving room B, rosette 12 is physically connected photovoltaic panel 16 and electrically insulates with panel 16 simultaneously.By lid
The 106 preferred mechanisms being connected to rosette 12 are to use rubber sheet gasket configuration, so that room B is sealed hermetically and avoids such as
Water moisture is by the infiltration of lid 106 to room B.
According to another embodiment of the present invention, rosette 12 is configured with double-walled 202, so that room A and room B each other can be every
From and can reconnect.Being similar to, busbar 212 can reconnect between room A and room B.In the present embodiment, Ke Yitong
Cross and replace room A with new circuit board 260 and repair the fault in the electronic device of circuit board 260, and without by room B from light underlying surface
Plate 16 disconnects.Similarly, the upgrading of electronic device can easily realize.
Preferably, the rosette 12 comprising case 102, lid 108/106, heat abstractor 264 and heating pad 262 is suitable to symbol
Close temperature and other available industrial standards used by connection of insulation standard or photovoltaic panel of IEC 61215 (Ed.2).Can
With by acrylonitrile butadiene styrene (ABS) thermoplastic, polybutylene terephthalate (PBT) (PBT), poly-(benzene oxidatoin
Thing) injection mo(u)lding of thermosetting resin of (PPO) or such as epoxy resin manufactures rosette 12 and lid 108/106.
Fig. 2 B shows that the cross section YY's of the rosette 12 that the dotted line in Figure 1A according to an embodiment of the invention represents is thin
Joint.The cross section of the room A that cross section YY is mounted on the back side 4 of photovoltaic panel 16.Cross section YY shows outer casing 102, has swallow
The heat abstractor 264 of tail tenon structure 264, conduction of heat liner 262, circuit board 260 and there is the lid 108 of shield layer 108a.
In a preferred embodiment of the invention, injection molding process is utilized to manufacture box room part A of rosette 12
And B.During injection molding process, it is positioned at the inside of box room A with and without the heat abstractor 264 of dovetail 264a, and
And owing to injection molding process causes it to be attached to box room A in situ.
Dovetail structure 264a can provide the increase intensity of the combination between heat abstractor 264 and box room A, and dovetail is tied
Structure 264a can be as the composition part of heat abstractor 264.The further effect of dovetail 264a is, when such as rosette 12
Stand due to room A internal work electronic unit produce thermal stress, rosette 12 is connected to photovoltaic panel time hot environment
Heat and during sunlight, it is ensured that the combination between heat abstractor 264 and room A remains intact.Securing member at such as screw is used
In the case of room A is fixed to heat abstractor 202, generally increase the lateral dimension of dovetail structure 264a to adapt to securing member
Size.The further feature of dovetail 264a is the hollow structure in dovetail 264a, and it allows dovetail 264a's
Deformation.The deformation of dovetail 264a allows in the solidification/cooling procedure combined between the heat abstractor 264 and shell 102 of room A
Shell 102 and the different coefficient of thermal expansion of heat abstractor 264/ dovetail 264a.
Heat abstractor 264 according to another embodiment of the present invention is shown referring now to Fig. 3 A and 3B, Fig. 3 A and 3B
Isometric chart.Heat abstractor 264 has four holes 302.Hole 302 is used to screw and heat abstractor 264 is connected to wiring
In the room A of box 12.The connection of heat abstractor and room A can as the extra step after the injection mo(u)lding of rosette 12, or
Person is as the extra step after the rosette 12 not being injection molded.Other heating pad can be placed in heat abstractor
Between 264 and shell 102, with ensure after heat abstractor 264 is connected to shell 102 heat abstractor 264 and shell 102 it
Between well contact.The deformation characteristic of heating pad causes due to the manufacture deviation of heat abstractor 264/ shell 102 for adapting to
The heterogeneity on the surface of heat abstractor 264 and shell 102.Alternatively, conduction of heat adhesive or Embedding Material can be placed in
Between heat abstractor 264 and shell 102.
Article used herein " one " meaning is " one or more ", such as " heat abstractor ", " a circuit
Plate " there is " one or more " i.e. " one or more heat abstractor ", the meaning of " one or more circuit board ".
Although having shown that and describe the selected embodiment of the present invention, it will be understood that be to the invention is not restricted to
Described embodiment.On the contrary, should be understood that can be to these embodiment party under without departing from the principle of the present invention and spirit
Formula is modified, and the scope of the present invention is defined by claim and equivalent thereof.
Claims (16)
1., for realizing being electrically connected to a rosette for photovoltaic panel, described rosette includes:
Being combined in the heat abstractor of chamber interior, wherein said room is suitable to receive the circuit board for electrical power conversion, and described
Heat abstractor is suitable to dissipate the heat that described circuit board generates, wherein said heat abstractor include being suitable to preventing described heat abstractor with
The mutually isolated dovetail structure of described rosette.
Rosette the most according to claim 1, also includes that outer casing, wherein said rosette are configured to be mounted institute
Stating photovoltaic panel, wherein said outer casing is adapted to provide for the electric isolution between described heat abstractor and described photovoltaic panel.
Rosette the most according to claim 2, also includes that lid, described lid are adapted to provide for described heat abstractor and described
Described electric isolution between photovoltaic panel.
Rosette the most according to claim 2, wherein said room includes that multiple supporter, the plurality of supporter are suitable to peace
Dress is configured to the electricity conversion described circuit board from the power output of described photovoltaic panel,
Wherein said outer casing includes the opening entering described room, and described rosette also includes:
Second Room, described second Room is in described outer casing, and wherein said outer casing includes the opening entering described second Room, and
Wherein said second Room is configured to supply the electrical connection of described photovoltaic panel；
Double-walled, described double-walled is suitable to described room and described second Room isolation, and wherein said double-walled is adapted to allow for described room to institute
State the mutually isolated of the second Room and reconnect so that described circuit board can be replaced again, and without by described second Room
Disconnect with described photovoltaic panel, and wherein, when described circuit board is mounted in the chamber, through confluxing of can reconnecting
Bar, the described circuit board in described room is electrically connected to the described electrical connection in described second Room, wherein said reconnects
The part of busbar is comprised in described double-walled；
Lid, described lid is suitable to seal the opening entering described room；And
Different lids, described different lid is suitable to seal the opening entering described second Room.
Rosette the most according to claim 1, also includes the screen layer being electrically connected to described heat abstractor, wherein said screen
Cover layer and described heat abstractor forms the faraday cup stoping the Radio frequency interference radiation from described rosette.
Rosette the most according to claim 5, also includes the lid being suitable to cover described room, and wherein said lid is described
Screen layer applies.
Rosette the most according to claim 1, also includes that conduction of heat liner, described conduction of heat liner are suitable in described heat radiation
Electric isolution and conduction of heat are provided between device and described circuit board.
Rosette the most according to claim 1, described room and described dovetail structure include different coefficient of thermal expansions.
Rosette the most according to claim 1, wherein said dovetail structure is suitable to prevent in described heat abstractor and institute
State the mutually isolated of heat abstractor described in the solidification process of combination between rosette and described rosette.
Rosette the most according to claim 9, wherein said dovetail structure includes hollow structure, described hollow structure
The deformation of dovetail structure described in the solidification process of the permission described combination between described heat abstractor and described rosette.
11. rosettees according to claim 1, acrylonitrile butadiene styrene (ABS) thermoplasticity is passed through in wherein said room
The injection mo(u)lding of in plastics, polybutylene terephthalate (PBT) (PBT), poly-(phenoxide) (PPO) and thermosetting resin
Manufacture.
12. 1 kinds provide for realizing the method being electrically connected to the rosette of photovoltaic panel, and described method includes:
Heat abstractor is combined in the indoor of described rosette；
Wherein said room is in the outer casing of described rosette；And
Wherein provided the combination between described heat abstractor and described rosette by dovetail structure.
13. methods according to claim 12, wherein said dovetail structure is suitable to prevent described heat abstractor with described
Rosette mutually isolated.
14. methods according to claim 13, also include:
Solidify the described combination between described heat abstractor and described rosette of the described chamber interior,
Wherein said dovetail structure includes being suitable to the hollow structure of deformation during described solidification.
15. methods according to claim 14, described hollow structure allows room described in the solidification process of described combination
Different coefficient of thermal expansion with described heat abstractor.
16. methods according to claim 12, also include using thermoplastic injection molding technique by described heat radiation dress
Put the described indoor being combined in described rosette.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18045509P | 2009-05-22 | 2009-05-22 | |
| US61/180,455 | 2009-05-22 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080021018.XA Division CN102422429B (en) | 2009-05-22 | 2010-05-24 | Electrically isolated heat dissipating junction box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104104329A CN104104329A (en) | 2014-10-15 |
| CN104104329B true CN104104329B (en) | 2017-01-04 |
Family
ID=
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104158483B (en) | The heat dissipating junction box of electric isolution | |
| US8542512B2 (en) | Solar photovoltaic inverters | |
| US10098261B2 (en) | Double insulated heat spreader | |
| US20120106033A1 (en) | Power switchgear | |
| AU2014373803B2 (en) | Alternating current photovoltaic module | |
| CN104104329B (en) | The heat dissipating junction box of electric isolution | |
| JP2015023255A (en) | Joint box for photovoltaic power generation | |
| JP2015023254A (en) | Joint box for photovoltaic power generation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |