US20120000689A1 - Junction box for solar battery - Google Patents
Junction box for solar battery Download PDFInfo
- Publication number
- US20120000689A1 US20120000689A1 US13/170,966 US201113170966A US2012000689A1 US 20120000689 A1 US20120000689 A1 US 20120000689A1 US 201113170966 A US201113170966 A US 201113170966A US 2012000689 A1 US2012000689 A1 US 2012000689A1
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- Prior art keywords
- junction box
- elastic member
- connector base
- bracket
- shaped
- 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.)
- Abandoned
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- 230000000712 assembly Effects 0.000 claims abstract description 27
- 238000000429 assembly Methods 0.000 claims abstract description 27
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 210000004907 gland Anatomy 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000003491 array Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- 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
-
- 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
Definitions
- Embodiments of the present disclosure relate to a solar battery, and more particularly to a junction box for a solar battery.
- a junction box for a solar battery can export electric energy generated by the solar battery.
- a solar battery assembly may comprise a backplate, a binder, some solar-cell arrays and a glass plate.
- the junction box is fixed to the backplate and connected to the solar-cell arrays via a connection cable.
- the junction box can provide power to outside as an output terminal.
- a junction box comprises a box body and a cover coupled with the box body.
- a plurality of connector bases may be formed or disposed in the box body, and corresponding connection assemblies may be fixed on the connector bases.
- Connection cables of solar battery cells and external cables may be connected with respective ends of the connection assemblies, and the connection assemblies may function for current conduction between the connection cables and the external cables.
- the junction box may further comprise diodes connected between every two neighboring connection assemblies. Currently, the diodes may be welded to the connection assemblies. Thus, a long time may be required to assemble the diodes, and insufficient soldering may accidentally occur, which may create an issue with replacement of the damaged diode(s). Further, disassembly may not be convenient for the conventional junction box currently in use.
- embodiments of the present disclosure provide a junction box for a solar battery which may be easy for replacement and/or maintenance with low cost, and which may thereby solve one or more of the above-mentioned problems.
- a junction box for a solar battery may be provided.
- the junction box may comprise a box body in which a plurality of connector bases are fixed, and a plurality of connection assemblies detachably connected with respective ones of the plurality of connector bases.
- Each connection assembly may comprise a bracket and elastic member.
- the bracket is detachably connected with a respective connector base and configured to form an accommodating space with the respective connector base, and the elastic member is received within the accommodating space.
- the bracket comprises a first end connectable with an external cable, and a second end connectable with a connection cable of the solar battery.
- the brackets of immediately adjacent connection assemblies are formed with respective via-holes for insertion of pins of a diode to couple the diode between the respective immediately adjacent connection assemblies, with the pins being capable of being clamped between the respective immediately adjacent connection assemblies.
- the diode may be easily inserted into the corresponding via-holes of the bracket, with the pins being tightly clamped between the elastic member and the bracket.
- the diode may need to be replaced or checked, the diode may be plugged out and a new diode may be replaced instead, which is convenient for maintenance with low cost.
- FIG. 1 is an exploded perspective view of a junction box for a solar battery according to an embodiment of the present disclosure
- FIG. 2 is a perspective view showing an inside portion of a body of the junction box according to an embodiment of the present disclosure
- FIG. 3 is a bottom perspective view of a body of the junction box according to an embodiment of the present disclosure
- FIG. 4 is a perspective view of a cover according to an embodiment of the present disclosure.
- FIG. 5 is a cross sectional view of a junction box for a solar battery according to an embodiment of the present disclosure
- FIG. 6 is a plan view of a junction box for a solar battery with a cover thereof being removed according to an embodiment of the present disclosure
- FIG. 7 is a top perspective view of a metallic bracket according to an embodiment of the present disclosure.
- FIG. 8 is a bottom perspective view of a metallic bracket according to an embodiment of the present disclosure.
- FIG. 9 is a perspective view of a U-shaped elastic member according to an embodiment of the present disclosure.
- FIG. 10 is a perspective view of a ⁇ -shaped elastic member according to an embodiment of the present disclosure.
- FIG. 11 is a perspective view of a U-shaped elastic member according to an embodiment of the present disclosure.
- FIG. 12 is a perspective view of a claw-shaped cable gland according to an embodiment of the present disclosure.
- FIG. 13 is a perspective view of a screwing nut according to an embodiment of the present disclosure.
- FIG. 14 is a perspective view of an enlarged part I shown in FIG. 2 .
- a junction box for a solar battery may comprise: a box body 1 in which a plurality of connector bases 10 are fixed; a cover 2 coupled with the box body 1 ; and a plurality of connection assemblies 3 connected with respective ones of the connector bases 10 .
- the junction box may further comprise one or more diodes 4 each of which is coupled between immediately adjacent connection assemblies 3 .
- the connection assembly 3 may comprise a bracket 30 such as a metal bracket, and an elastic member 33 .
- the bracket 30 is detachably connected with the connector base 10 .
- the bracket 30 is configured to form an accommodating space 100 with the connector base 10 , with a first end thereof being connectable with an external cable 13 and a second end thereof being connectable with a connection cable (not shown) of a solar battery.
- the elastic member 33 may be received within the accommodating space 100 .
- the brackets 30 of immediately adjacent connection assemblies 3 are formed with respective via-holes 3023 for insertion of pins 41 of a diode 4 to couple the diode 4 between the respective immediately adjacent connection assemblies 3 , with the pins 41 being capable of being clamped between the respective immediately adjacent connection assemblies 3 (including their respective brackets 30 and elastic members 33 ).
- the brackets 30 of immediately adjacent connection assemblies 3 may be formed with respective pluralities of via-holes 3023 for insertion of pins 41 of a plurality of diodes 4 to couple the diodes 4 in parallel between the respective immediately adjacent connection assemblies 3 .
- the metal bracket 30 may comprise a first end portion 301 connected to the external cable 13 , a middle portion 302 and a second end portion 303 configured to detachably fix the connection cable of the solar battery.
- the middle portion 302 may comprise two sides 3021 and an upper portion 3020 formed with via-holes 3023 with the sides 3021 being extended from the middle portion 302 toward the connector base 10 to form the accommodating space 100 , as shown in FIG. 5 .
- the first end portion 301 and second end portion 303 may extend from the upper portion 3020 of the middle portion 302 opposite one another, as shown in FIGS. 7 and 8 .
- the elastic member 33 may be configured to have a U-shaped body with two free ends curved toward each other. As shown in FIG. 9 , the U-shaped elastic member 33 may comprise two elastic parts 331 interconnected with a connection part 332 . The connection part 332 may be formed with a positioning hole 333 . As shown in FIG. 14 , the connector base 10 may be formed with a positioning projection 104 configured to engage the positioning hole 333 .
- the U-shaped elastic member 33 may be covered by the bracket 30 under the middle portion 302 of the bracket 30 , i.e., inside the accommodating space 100 , with the positioning projection 104 being fitted into the positioning hole 333 so that the elastic member 33 is stably positioned under the middle portion 302 .
- the second end portion 303 may comprise: a first vertical portion 3034 extending from the upper portion 3020 of the middle portion 302 ; a bottom portion 303 a connected with the first vertical portion 3034 and which is to be contacted with the connector base 10 ; and a second vertical portion 303 b extending upwardly from the bottom portion 303 a opposite from the first vertical portion 3034 .
- the bottom portion 303 b may be formed with a second positioning hole 3031
- the connector base 10 may be formed with a second positioning projection 105 (shown in FIG. 14 ) to be engaged with the second positioning hole 3031 .
- the second vertical portion 303 b may be formed with a third positioning hole 3033 .
- the pins 41 of the diode 4 may be inserted in the via-holes 3023 and clamped between the U-shaped elastic member 33 and an inner wall of the side 3021 of the middle portion 302 .
- the side 3021 of the middle portion 302 may be formed with a groove 3022 .
- a clamping projection 103 may be formed on the connector base 10 facing the middle portion to be engaged with the groove 3022 so that the bracket 30 may be securely fixed inside the connector base 10 .
- each connector base 10 is disposed on the bottom of the box body 1 for fixing respective connection assemblies 3 .
- Each connector base 10 may be adapted to the shape of the bracket 30 .
- the connector base 10 may have a groove shape, and the bracket 30 may be fixed in the box body 1 by fastening, welding or the like.
- the connector base 10 may be formed with a dividing projection 106 to divide the connector base 10 into two parts, a first fixed part 101 and a second fixed part 102 .
- the first fixed part 101 may be used to position the second end portion 303 of the bracket 30
- the second fixed part 102 may be used to position the middle portion 302 of the bracket 30 .
- the second end portion 303 comprises a bottom portion 303 a , a first vertical portion 3034 and a second vertical portion 303 b .
- the bottom portion 303 a may be contacted with the connector base 10 which may be connected with the first vertical portion 3034 .
- the second positioning hole 3031 may be formed on the bottom portion 303 a .
- the second vertical portion 303 b may be configured to be closely contacted with a U-shaped elastic member 32 (described below).
- the second vertical portion 303 b extends upwardly from the bottom portion 302 which may be formed with two guiding portions 3032 at both lateral edges, as shown in FIG. 8 .
- the connector base 10 may be formed with guide grooves 107 so that the guiding portions 3032 may be guided along the guide grooves 107 as the bracket 30 is fitted to the connector base 10 .
- the connection assembly 3 may further comprise a ⁇ -shaped elastic member 31 and a U-shaped elastic member 32 .
- the ⁇ -shaped elastic member 31 generally has a ⁇ shape and may comprise a flat portion 313 formed with a square hole 313 a , a first curved portion 312 , a second curved portion 311 and an extended portion 314 passing through the square hole 313 a .
- the U-shaped elastic member 32 may comprise a first arm portion 321 and a second arm portion 322 longer than the first arm portion 321 which form a U-shape.
- the ⁇ -shaped elastic member 31 may be positioned inside the second end portion 303 , and the U-shaped elastic member 32 may be positioned between the second end portion 303 and the connector base 10 .
- a portion of the ⁇ -shaped elastic member 31 may penetrate through the third positioning hole 3033 to push against the second arm portion 322 of the U-shaped elastic member 32 (to be described hereinafter).
- the connection cable of the solar battery may be clamped between the second vertical portion 302 b of the bracket 30 and the second arm portion 322 of the U-shaped elastic member 32 .
- the second positioning projection 105 may have a height adapted to elastically push against the curved portion 312 of the ⁇ -shaped elastic member 31 .
- the ⁇ -shaped elastic member 31 and the U-shaped elastic member 32 may be positioned in the second end portion 303 of the bracket 30 .
- the U-shaped elastic member 33 may be positioned in the second fixed part 102 of the connector base 10
- the positioning projection 104 of the connector base 10 may be positioned in the location hole 333 of the U-shaped elastic member 33 .
- the second end portion 303 of the bracket 30 may be fastened to the first fixed part 101 of the connector base 10
- the middle portion 302 of the bracket 30 may be fastened in the second fixed part 102 of the connector base 10 .
- a side of the box body 1 may be formed with a plurality of screwing portions 11 (two being shown); and the end 131 of the external cable 13 may pass through the screwing portion 11 and connect with the first end portion 301 of the bracket 30 .
- the junction box may further comprise a T-shaped plug 120 placed inside the screwing portion 11 ; a claw-shaped cable gland 121 fitted over a stem portion of the T-shaped plug 120 ; and a screwing nut 122 threadedly coupled to the screwing portion 11 .
- the end 131 of the external cable 13 may be fixed on a boss 151 via the coupled screwing nut 122 , the claw-shaped cable gland 121 , the T-shaped plug 120 and the screwing portion 11 respectively, as shown in FIG. 6 .
- an end of the claw-shaped cable gland 121 may be configured with some peripherally distributed claw-shaped parts 1210 which may be tightened inwardly as the screwing nut 122 is fitted over the cable gland 121 and screwed onto the screwing portion 11 .
- the screwing nut 122 may comprise a multi-grooved cylindrical part 1221 and a hexagon-shaped part 1222 integrally formed with the multi-grooved cylindrical part 1221 .
- the multi-grooved cylindrical part 1221 may be easily, manually manipulated.
- the hexagon-shaped part 1222 may be easily screwed by tools such as a wrench.
- the steps for installing the external cable 13 may as follows.
- the screwing nut 122 , the claw-shaped cable gland 121 and the T-shaped stopper 120 may be fitted over the external cable 13 .
- the T-shaped stopper 120 may then be placed in the screwing portion 11
- the claw-shaped cable gland 121 may be inserted in the screwing portion 11 with the claw-shaped parts 1210 of the claw-shaped cable gland 121 facing outwardly.
- the screwing nut 122 may be screwed onto the screwing portion 11 .
- the claw-shaped parts 1210 may be tightened inwardly for sealing due to the forces applied to the claw-shaped cable gland 121 by the plastic nut 122 .
- the first end portion 301 of the bracket 30 may be formed with at least a threaded hole 3010 .
- a cable terminal 130 formed at an end of the connection cable 13 may be formed with a threaded hole 131 accordingly.
- a screw 5 may be used to connect the first end 301 with the cable terminal 130 , such as by engaging the screw 5 through the first end 301 and threaded hole 131 , and into a hole 15 formed by the boss 151 .
- the box body 1 may be formed therein with bosses 151 for respective ones of the connector bases 10 .
- the edge of the cover 2 may be formed with a peripheral sealing groove 20 into which a seal ring 21 may be disposed.
- the seal ring 21 may be an O-shaped seal ring.
- the box body 1 may be formed with at least one clipping portion 14 ; and the cover 2 may be formed with at least a retaining portion 24 to be engaged with the clipping portion 14 . It should be understood, however, that the cover 2 may be engaged or coupled with the box body 1 via any other known means, such as screwing, clipping or the like.
- the bottom of the box body 1 may be formed with via-holes 16 for heat dissipation, as shown in FIG. 3 .
- the back side of the box body 1 may be formed with an open part 17 through which the connection cable of the solar battery may pass to be connected with the second end portion 303 of the bracket 30 .
- a tool such as a screw driver, may be inserted between the second positioning projection 105 and the first curved portion 312 of the ⁇ -shaped elastic member 31 .
- the first curved portion 312 may be pressed by the tool so that the flat portion 313 of the ⁇ -shaped elastic member 31 may be moved to further press the second arm portion 322 of the U-shaped elastic member 32 , resulting a clearance being formed between the second arm portion 322 and the second vertical portion 303 b of the bracket 30 .
- the connection cable may be placed in the clearance, and the tool may be released so that the connection cable of the solar battery may be tightly interposed therebetween.
- the tool may be used to further press the second arm portion 322 , so that the connection cable may be easily released.
- two diodes 4 may be coupled between two neighboring brackets 30 in parallel to ensure that the diodes are not damaged by the rated current, and the heat may not be locally generated, which may be optimal for heat dissipation inside the junction box. In such an instance, if one of the diodes connected in parallel is damaged, the current conduction may be maintained by the remaining diodes which are not damaged.
- auxiliary openings 3024 may be formed on the top surface of the middle portion 302 of the bracket 30 neighboring the space between the U-shaped elastic member 32 and the bracket 30 .
- These auxiliary openings 3024 may permit use of an auxiliary tool, such as a screw driver, to help inserting pins 41 of the diodes 4 to be clamped between the U-shaped elastic member 32 and the bracket 30 , or to help the plug-off of the pins 41 to avoid damage to the diodes.
- the junction box has a desirable appearance which may be convenient for assembly and/or disassembly.
- the junction box of the present disclosure may exhibit increased heat dissipating performance. And when the diodes are damaged, the junction box has a design that facilitates their easily replacement.
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Abstract
A junction box for a solar battery comprises a box body in which a plurality of connector bases are fixed, and a plurality of connection assemblies detachably connected with respective ones of the plurality of connector bases. Each connection assembly comprises a bracket and elastic member. The bracket is detachably connected with a respective connector base and configured to form an accommodating space with the respective connector base, and the elastic member is received within the accommodating space. The bracket comprises a first end connectable with an external cable, and a second end connectable with a connection cable of the solar battery. The brackets of immediately adjacent connection assemblies are formed with respective via-holes for insertion of pins of a diode to couple the diode between the respective immediately adjacent connection assemblies, with the pins being capable of being clamped between the respective immediately adjacent connection assemblies.
Description
- This application claims the benefit of Chinese Patent Application No. 201020249667.2, filed on Jun. 30, 2010, the content of which is incorporated herein by reference in its entirety.
- Embodiments of the present disclosure relate to a solar battery, and more particularly to a junction box for a solar battery.
- With the development of solar industry, requirements of solar battery subassemblies appear to increase. As a kind of solar battery subassembly, a junction box for a solar battery can export electric energy generated by the solar battery. Thus, the design and application of the junction box for a solar battery are rapidly and continuously changing. Generally, a solar battery assembly may comprise a backplate, a binder, some solar-cell arrays and a glass plate. The junction box is fixed to the backplate and connected to the solar-cell arrays via a connection cable. The junction box can provide power to outside as an output terminal.
- Generally, a junction box comprises a box body and a cover coupled with the box body. A plurality of connector bases may be formed or disposed in the box body, and corresponding connection assemblies may be fixed on the connector bases. Connection cables of solar battery cells and external cables may be connected with respective ends of the connection assemblies, and the connection assemblies may function for current conduction between the connection cables and the external cables. The junction box may further comprise diodes connected between every two neighboring connection assemblies. Currently, the diodes may be welded to the connection assemblies. Thus, a long time may be required to assemble the diodes, and insufficient soldering may accidentally occur, which may create an issue with replacement of the damaged diode(s). Further, disassembly may not be convenient for the conventional junction box currently in use.
- In view of the foregoing background, embodiments of the present disclosure provide a junction box for a solar battery which may be easy for replacement and/or maintenance with low cost, and which may thereby solve one or more of the above-mentioned problems.
- According to an embodiment of the present disclosure, a junction box for a solar battery may be provided. The junction box may comprise a box body in which a plurality of connector bases are fixed, and a plurality of connection assemblies detachably connected with respective ones of the plurality of connector bases. Each connection assembly may comprise a bracket and elastic member. The bracket is detachably connected with a respective connector base and configured to form an accommodating space with the respective connector base, and the elastic member is received within the accommodating space. The bracket comprises a first end connectable with an external cable, and a second end connectable with a connection cable of the solar battery. The brackets of immediately adjacent connection assemblies are formed with respective via-holes for insertion of pins of a diode to couple the diode between the respective immediately adjacent connection assemblies, with the pins being capable of being clamped between the respective immediately adjacent connection assemblies.
- According to the junction box for a solar battery of the present disclosure, the diode may be easily inserted into the corresponding via-holes of the bracket, with the pins being tightly clamped between the elastic member and the bracket. When the diode may need to be replaced or checked, the diode may be plugged out and a new diode may be replaced instead, which is convenient for maintenance with low cost.
- Having thus described embodiments of the present disclosure in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
-
FIG. 1 is an exploded perspective view of a junction box for a solar battery according to an embodiment of the present disclosure; -
FIG. 2 is a perspective view showing an inside portion of a body of the junction box according to an embodiment of the present disclosure; -
FIG. 3 is a bottom perspective view of a body of the junction box according to an embodiment of the present disclosure; -
FIG. 4 is a perspective view of a cover according to an embodiment of the present disclosure; -
FIG. 5 is a cross sectional view of a junction box for a solar battery according to an embodiment of the present disclosure; -
FIG. 6 is a plan view of a junction box for a solar battery with a cover thereof being removed according to an embodiment of the present disclosure; -
FIG. 7 is a top perspective view of a metallic bracket according to an embodiment of the present disclosure; -
FIG. 8 is a bottom perspective view of a metallic bracket according to an embodiment of the present disclosure; -
FIG. 9 is a perspective view of a U-shaped elastic member according to an embodiment of the present disclosure; -
FIG. 10 is a perspective view of a σ-shaped elastic member according to an embodiment of the present disclosure; -
FIG. 11 is a perspective view of a U-shaped elastic member according to an embodiment of the present disclosure; -
FIG. 12 is a perspective view of a claw-shaped cable gland according to an embodiment of the present disclosure; -
FIG. 13 is a perspective view of a screwing nut according to an embodiment of the present disclosure; and -
FIG. 14 is a perspective view of an enlarged part I shown inFIG. 2 . - The present disclosure now will be described more fully with reference to the accompanying drawings, in which some, but not all embodiments of the disclosure are shown. This disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Like numbers refer to like elements throughout.
- As shown in
FIGS. 1 , 2, 5 and 6, according to an embodiment of the present disclosure, a junction box for a solar battery may comprise: a box body 1 in which a plurality ofconnector bases 10 are fixed; acover 2 coupled with the box body 1; and a plurality ofconnection assemblies 3 connected with respective ones of theconnector bases 10. The junction box may further comprise one or more diodes 4 each of which is coupled between immediatelyadjacent connection assemblies 3. - As shown in
FIG. 1 , in some embodiments, theconnection assembly 3 may comprise abracket 30 such as a metal bracket, and anelastic member 33. As shown inFIG. 5 , thebracket 30 is detachably connected with theconnector base 10. Thebracket 30 is configured to form anaccommodating space 100 with theconnector base 10, with a first end thereof being connectable with anexternal cable 13 and a second end thereof being connectable with a connection cable (not shown) of a solar battery. Theelastic member 33 may be received within theaccommodating space 100. In some embodiments, thebrackets 30 of immediatelyadjacent connection assemblies 3 are formed with respective via-holes 3023 for insertion ofpins 41 of a diode 4 to couple the diode 4 between the respective immediatelyadjacent connection assemblies 3, with thepins 41 being capable of being clamped between the respective immediately adjacent connection assemblies 3 (including theirrespective brackets 30 and elastic members 33). In some embodiments, thebrackets 30 of immediatelyadjacent connection assemblies 3 may be formed with respective pluralities of via-holes 3023 for insertion ofpins 41 of a plurality of diodes 4 to couple the diodes 4 in parallel between the respective immediatelyadjacent connection assemblies 3. - As shown in
FIGS. 7 and 8 , themetal bracket 30 may comprise afirst end portion 301 connected to theexternal cable 13, amiddle portion 302 and asecond end portion 303 configured to detachably fix the connection cable of the solar battery. Themiddle portion 302 may comprise twosides 3021 and anupper portion 3020 formed with via-holes 3023 with thesides 3021 being extended from themiddle portion 302 toward theconnector base 10 to form theaccommodating space 100, as shown inFIG. 5 . Thefirst end portion 301 andsecond end portion 303 may extend from theupper portion 3020 of themiddle portion 302 opposite one another, as shown inFIGS. 7 and 8 . - In some embodiments, the
elastic member 33 may be configured to have a U-shaped body with two free ends curved toward each other. As shown inFIG. 9 , the U-shapedelastic member 33 may comprise twoelastic parts 331 interconnected with aconnection part 332. Theconnection part 332 may be formed with apositioning hole 333. As shown inFIG. 14 , theconnector base 10 may be formed with apositioning projection 104 configured to engage thepositioning hole 333. - Returning to
FIG. 5 , the U-shapedelastic member 33 may be covered by thebracket 30 under themiddle portion 302 of thebracket 30, i.e., inside theaccommodating space 100, with thepositioning projection 104 being fitted into thepositioning hole 333 so that theelastic member 33 is stably positioned under themiddle portion 302. - As shown in
FIG. 7 andFIG. 8 , thesecond end portion 303 may comprise: a firstvertical portion 3034 extending from theupper portion 3020 of themiddle portion 302; abottom portion 303 a connected with the firstvertical portion 3034 and which is to be contacted with theconnector base 10; and a secondvertical portion 303 b extending upwardly from thebottom portion 303 a opposite from the firstvertical portion 3034. In some embodiments, thebottom portion 303 b may be formed with asecond positioning hole 3031, and theconnector base 10 may be formed with a second positioning projection 105 (shown inFIG. 14 ) to be engaged with thesecond positioning hole 3031. And as further explained below, in some embodiments, the secondvertical portion 303 b may be formed with athird positioning hole 3033. - As shown in
FIG. 6 , thepins 41 of the diode 4 may be inserted in the via-holes 3023 and clamped between the U-shapedelastic member 33 and an inner wall of theside 3021 of themiddle portion 302. - As shown in
FIGS. 7 and 8 , theside 3021 of themiddle portion 302 may be formed with agroove 3022. And as shown inFIG. 14 , a clampingprojection 103 may be formed on theconnector base 10 facing the middle portion to be engaged with thegroove 3022 so that thebracket 30 may be securely fixed inside theconnector base 10. - As shown in
FIG. 1 , according to an embodiment of the present disclosure, fourconnector bases 10 are disposed on the bottom of the box body 1 for fixingrespective connection assemblies 3. Eachconnector base 10 may be adapted to the shape of thebracket 30. Generally, theconnector base 10 may have a groove shape, and thebracket 30 may be fixed in the box body 1 by fastening, welding or the like. - As shown in
FIG. 14 , according to an embodiment of the present disclosure, theconnector base 10 may be formed with a dividingprojection 106 to divide theconnector base 10 into two parts, a firstfixed part 101 and a secondfixed part 102. The firstfixed part 101 may be used to position thesecond end portion 303 of thebracket 30, and the secondfixed part 102 may be used to position themiddle portion 302 of thebracket 30. - As shown in
FIGS. 7 and 8 , thesecond end portion 303 comprises abottom portion 303 a, a firstvertical portion 3034 and a secondvertical portion 303 b. Thebottom portion 303 a may be contacted with theconnector base 10 which may be connected with the firstvertical portion 3034. And thesecond positioning hole 3031 may be formed on thebottom portion 303 a. As shown inFIG. 7 , the secondvertical portion 303 b may be configured to be closely contacted with a U-shaped elastic member 32 (described below). The secondvertical portion 303 b extends upwardly from thebottom portion 302 which may be formed with two guidingportions 3032 at both lateral edges, as shown inFIG. 8 . As shown inFIG. 14 , theconnector base 10 may be formed withguide grooves 107 so that the guidingportions 3032 may be guided along theguide grooves 107 as thebracket 30 is fitted to theconnector base 10. - As shown in
FIGS. 5 , 6, 10 and 11, theconnection assembly 3 may further comprise a σ-shapedelastic member 31 and a U-shapedelastic member 32. As shown inFIG. 10 , the σ-shapedelastic member 31 generally has a σ shape and may comprise aflat portion 313 formed with asquare hole 313 a, a firstcurved portion 312, a secondcurved portion 311 and anextended portion 314 passing through thesquare hole 313 a. As shown inFIG. 11 , the U-shapedelastic member 32 may comprise afirst arm portion 321 and asecond arm portion 322 longer than thefirst arm portion 321 which form a U-shape. - The σ-shaped
elastic member 31 may be positioned inside thesecond end portion 303, and the U-shapedelastic member 32 may be positioned between thesecond end portion 303 and theconnector base 10. A portion of the σ-shapedelastic member 31 may penetrate through thethird positioning hole 3033 to push against thesecond arm portion 322 of the U-shaped elastic member 32 (to be described hereinafter). When in use, the connection cable of the solar battery may be clamped between the second vertical portion 302 b of thebracket 30 and thesecond arm portion 322 of the U-shapedelastic member 32. - In some embodiments, the
second positioning projection 105 may have a height adapted to elastically push against thecurved portion 312 of the σ-shapedelastic member 31. - When assembling, as shown in
FIG. 5 , the σ-shapedelastic member 31 and the U-shapedelastic member 32 may be positioned in thesecond end portion 303 of thebracket 30. As shown inFIGS. 1 , 5 and 14, the U-shapedelastic member 33 may be positioned in the secondfixed part 102 of theconnector base 10, and thepositioning projection 104 of theconnector base 10 may be positioned in thelocation hole 333 of the U-shapedelastic member 33. Secondly, thesecond end portion 303 of thebracket 30 may be fastened to the firstfixed part 101 of theconnector base 10, and themiddle portion 302 of thebracket 30 may be fastened in the secondfixed part 102 of theconnector base 10. - As shown in
FIG. 1 , a side of the box body 1 may be formed with a plurality of screwing portions 11 (two being shown); and theend 131 of theexternal cable 13 may pass through the screwingportion 11 and connect with thefirst end portion 301 of thebracket 30. In some embodiments, the junction box may further comprise a T-shapedplug 120 placed inside the screwingportion 11; a claw-shapedcable gland 121 fitted over a stem portion of the T-shapedplug 120; and a screwingnut 122 threadedly coupled to the screwingportion 11. With these components, theend 131 of theexternal cable 13 may be fixed on aboss 151 via the coupled screwingnut 122, the claw-shapedcable gland 121, the T-shapedplug 120 and the screwingportion 11 respectively, as shown inFIG. 6 . - As shown in
FIG. 12 , an end of the claw-shapedcable gland 121 may be configured with some peripherally distributed claw-shapedparts 1210 which may be tightened inwardly as the screwingnut 122 is fitted over thecable gland 121 and screwed onto the screwingportion 11. - As shown in
FIG. 13 , the screwingnut 122 may comprise a multi-groovedcylindrical part 1221 and a hexagon-shapedpart 1222 integrally formed with the multi-groovedcylindrical part 1221. The multi-groovedcylindrical part 1221 may be easily, manually manipulated. And the hexagon-shapedpart 1222 may be easily screwed by tools such as a wrench. - The steps for installing the
external cable 13 may as follows. The screwingnut 122, the claw-shapedcable gland 121 and the T-shapedstopper 120 may be fitted over theexternal cable 13. The T-shapedstopper 120 may then be placed in the screwingportion 11, the claw-shapedcable gland 121 may be inserted in the screwingportion 11 with the claw-shapedparts 1210 of the claw-shapedcable gland 121 facing outwardly. Lastly, the screwingnut 122 may be screwed onto the screwingportion 11. The claw-shapedparts 1210 may be tightened inwardly for sealing due to the forces applied to the claw-shapedcable gland 121 by theplastic nut 122. - As shown in
FIGS. 7 and 8 , thefirst end portion 301 of thebracket 30 may be formed with at least a threadedhole 3010. Acable terminal 130 formed at an end of theconnection cable 13 may be formed with a threadedhole 131 accordingly. And when assembling, ascrew 5 may be used to connect thefirst end 301 with thecable terminal 130, such as by engaging thescrew 5 through thefirst end 301 and threadedhole 131, and into ahole 15 formed by theboss 151. As shown inFIGS. 1 , 5, 7, 8 and 14, the box body 1 may be formed therein withbosses 151 for respective ones of the connector bases 10. - As shown in
FIGS. 1 and 4 , the edge of thecover 2 may be formed with aperipheral sealing groove 20 into which aseal ring 21 may be disposed. And in some embodiments, theseal ring 21 may be an O-shaped seal ring. - As shown in
FIGS. 1-4 , in some embodiments, the box body 1 may be formed with at least one clippingportion 14; and thecover 2 may be formed with at least a retainingportion 24 to be engaged with the clippingportion 14. It should be understood, however, that thecover 2 may be engaged or coupled with the box body 1 via any other known means, such as screwing, clipping or the like. - The bottom of the box body 1 may be formed with via-
holes 16 for heat dissipation, as shown inFIG. 3 . As shown inFIG. 3 , the back side of the box body 1 may be formed with anopen part 17 through which the connection cable of the solar battery may pass to be connected with thesecond end portion 303 of thebracket 30. More specifically, as shown inFIG. 5 , in an instance in which the connection cable (not shown) of the solar battery is inserted through theopen part 17, a tool, such as a screw driver, may be inserted between thesecond positioning projection 105 and the firstcurved portion 312 of the σ-shapedelastic member 31. In turn, the firstcurved portion 312 may be pressed by the tool so that theflat portion 313 of the σ-shapedelastic member 31 may be moved to further press thesecond arm portion 322 of the U-shapedelastic member 32, resulting a clearance being formed between thesecond arm portion 322 and the secondvertical portion 303 b of thebracket 30. At this time, the connection cable may be placed in the clearance, and the tool may be released so that the connection cable of the solar battery may be tightly interposed therebetween. To release the connection cable, the tool may be used to further press thesecond arm portion 322, so that the connection cable may be easily released. - According to an embodiment of the present disclosure, two diodes 4 may be coupled between two
neighboring brackets 30 in parallel to ensure that the diodes are not damaged by the rated current, and the heat may not be locally generated, which may be optimal for heat dissipation inside the junction box. In such an instance, if one of the diodes connected in parallel is damaged, the current conduction may be maintained by the remaining diodes which are not damaged. - As shown in
FIGS. 7 and 8 ,auxiliary openings 3024 may be formed on the top surface of themiddle portion 302 of thebracket 30 neighboring the space between the U-shapedelastic member 32 and thebracket 30. Theseauxiliary openings 3024 may permit use of an auxiliary tool, such as a screw driver, to help insertingpins 41 of the diodes 4 to be clamped between the U-shapedelastic member 32 and thebracket 30, or to help the plug-off of thepins 41 to avoid damage to the diodes. - According to the present disclosure, the junction box has a desirable appearance which may be convenient for assembly and/or disassembly. In addition, the junction box of the present disclosure may exhibit increased heat dissipating performance. And when the diodes are damaged, the junction box has a design that facilitates their easily replacement.
- Many modifications and other embodiments set forth herein will come to mind to one skilled in the art to which these embodiments pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the embodiments are not to be limited to the specific ones disclosed and that modifications and other embodiments are intended to be comprised within the scope of the appended claims. Moreover, although the foregoing descriptions and the associated drawings describe embodiments in the context of certain example combinations of elements and/or functions, it should be appreciated that different combinations of elements and/or functions may be provided by alternative embodiments without departing from the scope of the appended claims. In this regard, for example, different combinations of elements and/or functions other than those explicitly described above are also contemplated as may be set forth in some of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (14)
1. A junction box for a solar battery comprising:
a box body in which a plurality of connector bases are fixed; and
a plurality of connection assemblies detachably connected with respective ones of the plurality of connector bases, each connection assembly comprising:
a bracket detachably connected with a respective connector base and configured to form an accommodating space with the respective connector base, with a first end thereof being connectable with an external cable and a second end thereof being connectable with a connection cable of the solar battery; and
an elastic member received within the accommodating space,
wherein the brackets of immediately adjacent connection assemblies are formed with respective via-holes for insertion of pins of a diode to couple the diode between the respective immediately adjacent connection assemblies, the pins being capable of being clamped between the respective immediately adjacent connection assemblies.
2. The junction box of claim 1 , wherein the brackets of immediately adjacent connection assemblies are formed with respective pluralities of via-holes for insertion of pins of a plurality of diodes to couple the diodes in parallel between the respective immediately adjacent connection assemblies.
3. The junction box of claim 1 , wherein the bracket comprises:
a middle portion including an upper portion and two sides extending from the upper portion toward a respective connector base to form the accommodating space;
a first end portion extending from the upper portion of the middle portion and configured to be connected with the external cable; and
a second end portion extending from the upper portion of the middle portion oppose the first end portion, and configured to detachably fix the connection cable of the solar battery.
4. The junction box of claim 3 , wherein the elastic member is configured to have a U-shaped body with two free ends curved toward each other.
5. The junction box of claim 3 , wherein each connector base is formed with a first positioning projection that faces the middle portion of the bracket of a respective connection assembly, and
wherein the elastic member of each connection assembly is formed with a first positioning hole configured to engage the first positioning projection of a respective connector base.
6. The junction box of claim 3 , wherein the box body is formed therein with a plurality of bosses for respective ones of the plurality of connector bases,
wherein the bracket is detachably connected with the respective connector base such that the first end portion of the bracket is adjacent a respective boss, and such that the first end portion is fixable to the respective boss by a screw.
7. The junction box of claim 6 , wherein the second end portion comprises:
a first vertical portion extending from the upper portion of the middle portion;
a bottom portion connected with the first vertical portion and which is to be contacted with the respective connector base; and
a second vertical portion extending upwardly from the bottom portion.
8. The junction box of claim 7 , wherein each connector base is formed with a second positioning projection, and
wherein the bottom portion is formed with a second positioning hole to be engaged with the second positioning projection of a respective connector base.
9. The junction box of claim 8 , wherein the second vertical portion is formed with a third positioning hole, and wherein each connection assembly further comprises:
a σ-shaped elastic member positioned inside the second end portion; and
a U-shaped elastic member positioned between the second end portion and the respective connector base, wherein a portion of the σ-shaped elastic member penetrates through the third positioning hole to push against an arm portion of the U-shaped elastic member.
10. The junction box of claim 9 , wherein the second positioning projection has a height adapted to elastically push against a curved portion of the σ-shaped elastic member.
11. The junction box of claim 7 , wherein each connector base is formed with guide grooves, and
wherein the second vertical portion is formed with guiding portions to be guided along the guide grooves as the bracket is fitted to the respective connector base.
12. The junction box of claim 6 , wherein the box body comprises an external side wall on which a screwing portion is formed neighboring a boss of the plurality of bosses, and wherein an end of the external cable is penetrable through the screwing portion to be fixed on the respective boss.
13. The junction box of claim 12 further comprising:
a T-shaped stopper placed inside the screwing portion;
a claw-shaped cable gland fitted over a stem portion of the T-shaped plug; and
a screwing nut threadedly coupled to the screwing portion so that the end of the external cable is fixable on the boss via the screwing nut, the claw-shaped cable gland, the T-shaped plug and the screwing portion fitted together.
14. The junction box of claim 1 further comprising:
a cover to be coupled with the box body, wherein the cover is formed with a peripheral sealing groove into which a seal ring is coupled when the cover is coupled with the box body.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010202496672U CN201754409U (en) | 2010-06-30 | 2010-06-30 | Solar battery terminal box |
CN201020249667.2 | 2010-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120000689A1 true US20120000689A1 (en) | 2012-01-05 |
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/169,798 Active 2032-04-08 US8805629B2 (en) | 2010-06-30 | 2011-06-27 | Maximum power point tracking device for a solar electric generation system and a tracking method for the same |
US13/170,966 Abandoned US20120000689A1 (en) | 2010-06-30 | 2011-06-28 | Junction box for solar battery |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/169,798 Active 2032-04-08 US8805629B2 (en) | 2010-06-30 | 2011-06-27 | Maximum power point tracking device for a solar electric generation system and a tracking method for the same |
Country Status (4)
Country | Link |
---|---|
US (2) | US8805629B2 (en) |
EP (1) | EP2589113A4 (en) |
CN (1) | CN201754409U (en) |
WO (1) | WO2012000392A1 (en) |
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US20150296636A1 (en) * | 2014-04-11 | 2015-10-15 | Chicony Power Technology Co., Ltd. | Electronic apparatus for solar power system |
CN107658359A (en) * | 2017-10-11 | 2018-02-02 | 江阴艾能赛瑞能源科技有限公司 | A kind of solar cell module quickly assembled |
US10498121B1 (en) * | 2018-11-01 | 2019-12-03 | Ti-Lane Precision Electronic Co., Ltd | Waterproof fuse convergence box |
Also Published As
Publication number | Publication date |
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EP2589113A4 (en) | 2014-06-11 |
EP2589113A1 (en) | 2013-05-08 |
US8805629B2 (en) | 2014-08-12 |
US20120004874A1 (en) | 2012-01-05 |
CN201754409U (en) | 2011-03-02 |
WO2012000392A1 (en) | 2012-01-05 |
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