CN103646975A - Photovoltaic assembly - Google Patents
Photovoltaic assembly Download PDFInfo
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- CN103646975A CN103646975A CN201310541326.0A CN201310541326A CN103646975A CN 103646975 A CN103646975 A CN 103646975A CN 201310541326 A CN201310541326 A CN 201310541326A CN 103646975 A CN103646975 A CN 103646975A
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- photovoltaic
- terminal box
- photovoltaic module
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a photovoltaic assembly, comprising a photovoltaic substrate and a plurality of photovoltaic cells which are formed on the photovoltaic substrate and electrically connected with each other in series, wherein the photovoltaic cells, which are electrically connected with each other in series, are defined into a plurality of cell sets, the photovoltaic substrate is provided with a plurality of junction boxes, each of the junction boxes is internally provided with a bypass protection device, and each of the junction boxes is electrically connected with the corresponding cell set in parallel; the junction boxes at two sides of the photovoltaic substrate are both provided with an outgoing line, and the two junction boxes with the outgoing lines control a plurality of photovoltaic cells which are electrically connected with each other in series. The photovoltaic assembly disclosed by the invention can simplify internal bus bar routing, and is stable in operation.
Description
Technical field
The present invention relates to photovoltaic applied technical field, relate in particular to the photovoltaic module with terminal box.
Background technology
Along with the exhaustion day by day of global energy resource, the mankind find the paces of the new alternative type energy also in continuous quickening.Solar energy is a kind of renewable resource.Converting solar energy into electrical energy can energy savings, alleviates power shortage problem, can reduce environmental pollution again, and therefore, solar-photovoltaic technology is more and more subject to the public's concern and favor.Photovoltaic cell is by the material that can produce photovoltaic effect, such as silicon, arsenic sow, selenium is pluged with molten metal copper or other materials etc. is made, thereby utilize photovoltaic effect that transform light energy is become to electric energy.The photovoltaic module being formed by multi-disc photovoltaic cell unit combination is at present come into operation in a large number, and for example, photovoltaic module is applied to building electricity generation system, or for the curtain wall as building or to be installed on the roof of building first-class.
Photovoltaic component terminal box is for realizing the interconnected of photovoltaic module and external power source assembly, thereby the power stage of photovoltaic module is arrived outside.Meanwhile, photovoltaic component terminal box is also the crucial jockey that photovoltaic module is made system, and the effect of photovoltaic component terminal box is to prevent that photovoltaic module part from producing hot spot effect while being blocked.In use, conventionally photovoltaic component terminal box need to be fixed on photovoltaic module to carry out Energy Transfer work.
At present, photovoltaic module all adopts the mode of a terminal box of a photovoltaic module conventionally.Fig. 1 has shown existing schematic diagram that adopts the photovoltaic module of a terminal box, as shown in Figure 1, existing photovoltaic module 9 comprises photovoltaic substrate 90 and is formed on a plurality of battery pack 91 that formed by a plurality of photovoltaic cell series connection on photovoltaic substrate 90, because 9 of photovoltaic modulies are adopted
By a terminal box 92, therefore, the head busbar 93,94,95 of drawing from a plurality of battery pack 91 needs all first toward middle part, to collect, and then thereto 92; When system line, need again the lead-out wire of certain length from terminal box 92, to draw to realize the connection of photovoltaic module 9.The connected mode of a terminal box of a this photovoltaic module, make to exist part to repeat between the internal circuit of photovoltaic module 9 and external circuit, and, cause the lead-out wire of drawing from terminal box 92 longer, thereby waste material causes again line loss, cause the power output of photovoltaic module 9 to decline, exist and optimize space.In addition, this connected mode causes head busbar 93,94,95 to need turnover, and lamination operation is complicated, easily causes fragment.
Therefore, be necessary to provide improved technical scheme to overcome the technical problem existing in prior art.
Summary of the invention
The main technical problem to be solved in the present invention is to provide a kind of photovoltaic module, and it can simplify the cabling of inner busbar, and working stability.
For solving the problems of the technologies described above, the invention provides following technical scheme:
An aspect of of the present present invention provides a kind of photovoltaic module; it comprises photovoltaic substrate and is formed on a plurality of photovoltaic cells that are mutually electrically connected in series on described photovoltaic substrate; wherein; described a plurality of photovoltaic cell being mutually electrically connected in series is defined as some battery pack; a plurality of terminal boxes are installed on described photovoltaic substrate; in each terminal box, be provided with bypass protector, each terminal box is electrically connected in parallel with corresponding battery pack; Be positioned at each tool one lead-out wire of terminal box of described photovoltaic substrate both sides, the terminal box of described two tool lead-out wires is controlled described a plurality of photovoltaic cells that are mutually electrically connected in series.
Photovoltaic module of the present invention is by breaking the whole up into parts existing terminal box design, dispersed placement, thus inner busbar cabling simplified, with respect to the photovoltaic module of a terminal box of existing employing, photovoltaic module of the present invention can reduce the length of busbar, reduces the internal resistance of photovoltaic module.The terminal box different version types of can arranging in pairs or groups arbitrarily, the photovoltaic module of different model is used.
By the detailed description below with reference to accompanying drawing, it is obvious that other side of the present invention and feature become.But it should be known that the only object design for explaining of this accompanying drawing, rather than as the restriction of scope of the present invention, this is because it should be with reference to additional claim.Should also be appreciated that, unless otherwise noted, the unnecessary accompanying drawing of drawing to scale, they only try hard to illustrate conceptually structure described herein and flow process.
Accompanying drawing explanation
With reference to the detailed description of following preferred implementation, and read in the lump with appended drawing, present invention will become more fully understood, with reference to character, refers to all the time part same in view equally in accompanying drawing.Wherein:
Fig. 1 is the schematic diagram of existing a kind of photovoltaic module;
Fig. 2 is the general structure schematic diagram of the photovoltaic module of the first embodiment according to the present invention;
Fig. 3 is the schematic circuit diagram of the photovoltaic module shown in Fig. 2;
Fig. 4 is the general structure schematic diagram of the photovoltaic module of the second embodiment according to the present invention;
Fig. 5 is the schematic circuit diagram of the photovoltaic module shown in Fig. 4;
Fig. 6 is the schematic circuit diagram of a kind of embodiment of photovoltaic module shown in Fig. 4; And
Fig. 7 is the partial schematic sectional view along the photovoltaic module of the A-A line in Fig. 4.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
The first embodiment
Fig. 2 and Fig. 3 have shown the schematic diagram of the photovoltaic module of the first embodiment of the present invention.As shown in Figures 2 and 3, the photovoltaic module 1 of the first embodiment of the present invention comprises photovoltaic substrate 10, be arranged on the frame 13 of photovoltaic substrate 10 peripheries and be formed on a plurality of photovoltaic cells that are mutually electrically connected in series 110 on photovoltaic substrate 10, wherein, a plurality of photovoltaic cells that are mutually electrically connected in series 110 are defined as some battery pack 11, a plurality of terminal box 12a are installed on photovoltaic substrate 10, 12b, 12c, each terminal box 12a, 12b, in 12c, be provided with bypass protector (not shown in Fig. 2 of this embodiment and Fig. 3), each terminal box 12a, 12b, 12c is electrically connected in parallel with corresponding battery pack 11, be positioned at the terminal box 12a of photovoltaic substrate 10 both sides, each tool one lead-out wire (not label) of 12b, the terminal box 12a of two tool lead-out wires, 12b controls a plurality of photovoltaic cells that are mutually electrically connected in series 110.
In concrete execution mode, terminal box 12a, 12b, 12c is adhered on photovoltaic substrate 10.Preferably, frame 13 is metal edge frame, terminal box 12a, 12b, 12c and frame 13 thermo-contacts.
In this better embodiment, each battery pack 11 comprises the photovoltaic cell 110 of similar number.In other embodiments, different battery pack 11 can comprise the photovoltaic cell 110 of different numbers.
Bypass protector in described terminal box is diode, and in each terminal box, correspondence arranges a diode.
The photovoltaic module 1 of the first embodiment of the present invention is by breaking the whole up into parts existing terminal box design, dispersed placement, thereby simplify inner busbar cabling, photovoltaic module with respect to a terminal box of existing employing, the photovoltaic module 1 of the first embodiment of the present invention can reduce the length of busbar, reduces the internal resistance of photovoltaic module 1.Terminal box 12a, 12b, the 12c different version types of can arranging in pairs or groups arbitrarily, the photovoltaic module 1 of different model is used.
And, in the photovoltaic module 1 of the first embodiment of the present invention, due to terminal box 12a, 12b, 12c is close to metal edge frame 13, terminal box 12a, 12b, 12c can with metal edge frame 13 thermo-contacts, thereby terminal box 12a, 12b, 12c can, by means of metal edge frame 13 heat radiations, improve terminal box 12a, 12b, the heat dispersion of 12c, and then improve the reliability of whole photovoltaic module 1.
It should be noted that, Fig. 3 only schematically illustrated photovoltaic module 1 comprises 3 battery pack 11 and 3 terminal box 12a, 12b, and 12c, however the photovoltaic module 1 shown in Fig. 3 is only an example of the present invention, and not as the restriction to photovoltaic module 1 of the present invention.In fact, the battery pack 11 that photovoltaic module 1 of the present invention has and terminal box 12a, 12b, 12c
Quantity can carry out choose reasonable according to practical situations.For of the present invention other, specifically execute mode, also so same.
In the first embodiment, photovoltaic module 1 adopts perpendicular version type.For example, as shown in Figure 3, the photovoltaic module 1 of below take comprises that 72 photovoltaic cells 110 describe as example.In the photovoltaic module 1 of the perpendicular version of the employing shown in Fig. 3 type, be divided into 3 battery pack 11, each battery pack 11 comprises that each battery pack 11 in 1,100 3 battery pack 11 of 24 photovoltaic cells is electrically connected to a terminal box 12a, 12b, 12c in parallel.
As Fig. 3, in the first embodiment, due to the terminal box of such scattering device being set, and in each terminal box, correspondence arranges a bypass diode, when some battery pack 11 of photovoltaic module 1 inside occur when abnormal, as by leaf, when birds droppings etc. block, for example in first battery pack 11, the 6th photovoltaic cell 110 of number occurs when abnormal from top to bottom, to there is the heating of hot spot effect in photovoltaic module 1 part, will lose the energy output of 24 photovoltaic cells 110 in the whole battery pack 11 at these sheet photovoltaic cell 110 places, now, bypass diode in the terminal box being connected in parallel due to the battery pack 11 with these 24 photovoltaic cell 110 places shields, therefore, only can lose the energy output of 24 photovoltaic cells 110 in the whole battery pack 11 at these sheet photovoltaic cell 110 places, the still normal operation of whole photovoltaic module.
Therefore, also there is the space of further optimal design in the photovoltaic module 1 of the first embodiment of the present invention, to reduce the quantity of photovoltaic cell llo in each battery pack 11.For this reason, the present invention also provides a kind of technical scheme of further improved photovoltaic module, below will be described in detail improved technical scheme.
The second embodiment
Fig. 4 to Fig. 6 has shown the schematic diagram of the photovoltaic module of the second embodiment of the present invention.As shown in Figures 4 to 6; the photovoltaic module 2 of the second embodiment of the present invention comprises equally photovoltaic substrate 20, is arranged on the frame 23 of photovoltaic substrate 20 peripheries and is formed on a plurality of photovoltaic cells that are mutually electrically connected in series 210 on photovoltaic substrate 20; wherein; a plurality of photovoltaic cells that are mutually electrically connected in series 210 are defined as some battery pack 21; a plurality of terminal box 22a are installed on photovoltaic substrate; 22b; 22c; each terminal box 22a; 22b, is provided with bypass protector in 22c, each terminal box 22a; 22b, 22c is electrically connected in parallel with corresponding battery pack 21; Be positioned at the terminal box 22a of photovoltaic substrate 20 both sides, each tool of 22b one lead-out wire 24a, 24b, the terminal box 22a of two tool lead-out wires, 22b controls a plurality of photovoltaic cells that are mutually electrically connected in series 210.
Preferably, frame 23 is metal edge frame, terminal box 22a, 22b, 22c and frame 23 thermo-contacts.
In this better embodiment, each battery pack 21 comprises the photovoltaic cell 210 of similar number.In other embodiments, different battery pack 21 also can comprise the photovoltaic cell 210 of different numbers.
Similarly, the photovoltaic module 2 of the second embodiment of the present invention is by breaking the whole up into parts existing terminal box design, dispersed placement, thereby simplify inner busbar cabling, photovoltaic module with respect to a terminal box of existing employing, the photovoltaic module 2 of the second embodiment of the present invention can reduce the length of busbar, reduces the internal resistance of photovoltaic module 2. Terminal box 22a, 22b, the 22c different version types of can arranging in pairs or groups arbitrarily, the photovoltaic module 2 of different model is used.
And, in the photovoltaic module 2 of the second embodiment of the present invention, due to terminal box 22a, 22b, 22c is close to metal edge frame 23, terminal box 22a, 22b, 22c can with metal edge frame 23 thermo-contacts, thereby terminal box 22a, 22b, 22c can, by means of metal edge frame 23 heat radiations, improve terminal box 22a, 22b, the heat dispersion of 22c, and then improve the reliability of whole photovoltaic module 2.
In the second embodiment, photovoltaic module 2 adopts horizontal version type.For example, as shown in Figure 5 and Figure 6, below will take equally photovoltaic module 2 and comprise that 72 photovoltaic cells 210 describe as example.In the photovoltaic module 2 of the horizontal version of the employing shown in Fig. 5 and Fig. 6 type, can be divided into 6 battery pack 21, each battery pack 21 comprises that each battery pack 21 in 2,100 6 battery pack 21 of 12 photovoltaic cells is electrically connected to a terminal box 22a, 22b, 22c in parallel.
As Fig. 5, in the second execution mode, due to the terminal box of such scattering device being set, and in each terminal box, correspondence arranges a bypass protector, when some battery pack 21 of photovoltaic module 2 inside occur when abnormal, for example in first battery pack 21, the 4th photovoltaic cell 210 of number occurs abnormal from top to bottom, because each battery pack 21 only comprises 12 photovoltaic cells 210, therefore, only can lose the energy output of 12 photovoltaic cells 210 in the battery pack 21 at these sheet photovoltaic cell 210 places, with respect to the photovoltaic module 1 that adopts perpendicular version type in the first embodiment, owing to having increased the grouping of photovoltaic cell 210, reduce the quantity of photovoltaic cell 210 included in each battery pack 21, thereby greatly reduced the power generation loss amount of photovoltaic module 2, simultaneously, reduced the dividing potential drop in each battery pack 21, thereby the caloric value while reducing certain the sheet photovoltaic cell 210 generation hot spot effect in battery pack 21, reduce the risk that photovoltaic module 2 is burned.
Therefore, in the situation that photovoltaic module comprises the photovoltaic cell of same quantity, the photovoltaic module 2 of the horizontal version of the employing type of the second embodiment is with respect to the photovoltaic module 1 of the perpendicular version of the employing type of the first embodiment, can increase the grouping of photovoltaic cell, improve the quantity of battery pack, thereby can obviously reduce the quantity of photovoltaic cell in each battery pack, further the overall efficiency of elevator system and reliability.
Version type that the photovoltaic module 1 of the first embodiment adopts except the photovoltaic module 2 from the second embodiment is different, the photovoltaic module 1 of the first embodiment has the architectural feature similar with photovoltaic module 2 cardinal principles of the second embodiment, therefore,, will only for the second embodiment, the structure of photovoltaic module of the present invention be explained in further detail.
As shown in Figure 5 and Figure 6, each terminal box 22a, 22b, 22c comprises the bypass protector 223 being electrically connected in parallel with a battery pack 21.
In the present invention, the bypass protector 223 in terminal box can be diode, each terminal box 22a, and 22b, in 22c, correspondence arranges a diode.Yet, terminal box 22a of the present invention, 22b, bypass protector 223 included in 22c is not limited to diode, and bypass protector 223 of the present invention can also be the electronic circuit that possesses the function suitable with diode.
In conjunction with reference to shown in figure 4 and Fig. 7, terminal box 22a, 22b, 22c is adhered on photovoltaic substrate 20 and is adhered on frame 23, and bypass protector 223 is near frame 23 and be packaged in terminal box 22a, and 22b, in 22c.Each terminal box 22a, 22b, 22c comprises the first noumenon 221 and the second body 222, and the first noumenon 221 is adhered on photovoltaic substrate 20, and the second body 222 is adhered on frame 23, and bypass protector 223 is packaged in the second body 222.Bypass protector 223 encapsulates near metal edge frame 23, thereby can be by terminal box 22a, 22b; the thermo-contact of 22c and metal edge frame 23, in time by terminal box 22a, 22b; the dissipation of heat producing on bypass protector 223 during 22c work falls, and further improves bypass protection
The heat dispersion of device 223.
As shown in Figures 4 to 6, a plurality of terminal box 22a of the present invention, 22b, 22c comprises a positive terminal terminal box 22a, a negative pole end terminal box 22b and at least one halfway junction box 22c, each terminal box 22a, 22b, 22c has the positive pole of the battery pack 21 being electrically connected to it and the terminal (not shown) that negative pole is electrically connected to respectively.
Positive terminal terminal box 22a has the lead-out wire that is electrically connected to the anodal lead-out wire 24a (as shown in Figure 4) of a battery pack 21 and does not have the negative pole that is electrically connected to a battery pack 21.Negative pole end terminal box 22b has the lead-out wire 24b (as shown in Figure 4) of the negative pole that is electrically connected to a battery pack 21 and does not have the anodal lead-out wire that is electrically connected to a battery pack 21.Halfway junction box 22c does not have lead-out wire.
The positive and negative electrode lead-out wire 24a of photovoltaic module 2 of the present invention, 24b only need to draw from being arranged in positive terminal terminal box 22a, the negative pole end terminal box 22b of photovoltaic substrate 20 left and right sides, thereby when meeting system line, shortened lead-out wire consumption, the cost that reduces photovoltaic module 2 reduces the internal resistance of photovoltaic module 2 simultaneously.
The present invention passes through photovoltaic module 1,2 and terminal box 12a, 12b, and 12c, 22a, 22b, the connected mode of 22c is optimized design, thereby reaches elevator system performance, reduction assembly cost and improve the objects such as establishment of component technique.
Above execution mode is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. photovoltaic module; it comprises photovoltaic substrate and is formed on a plurality of photovoltaic cells that are mutually electrically connected in series on described photovoltaic substrate; wherein; described a plurality of photovoltaic cell being mutually electrically connected in series is defined as some battery pack; it is characterized in that; a plurality of terminal boxes are installed on described photovoltaic substrate, in each terminal box, are provided with bypass protector, each terminal box is electrically connected in parallel with corresponding battery pack; Be positioned at each tool one lead-out wire of terminal box of described photovoltaic substrate both sides, the terminal box of described two tool lead-out wires is controlled described a plurality of photovoltaic cells that are mutually electrically connected in series.
2. photovoltaic module according to claim 1, wherein, each battery pack comprises the photovoltaic cell of similar number.
3. photovoltaic module according to claim 1, wherein, the bypass protector in described terminal box is diode, in each terminal box, correspondence arranges a diode.
4. photovoltaic module according to claim 1; wherein; described photovoltaic module also comprises the frame that is located at described photovoltaic substrate periphery; described terminal box be adhered on described photovoltaic substrate and with described frame thermo-contact, described bypass protector is near described frame and be packaged in described terminal box.
5. photovoltaic module according to claim 4; wherein, described terminal box comprises the first noumenon and the second body, and described the first noumenon is adhered on described photovoltaic substrate; described the second body is adhered on described frame, and described bypass protector is packaged in described the second body.
6. photovoltaic module according to claim 1, wherein, described a plurality of terminal box comprises a positive terminal terminal box, a negative pole end terminal box and at least one halfway junction box, and each terminal box has the positive pole of the described battery pack being electrically connected to it and the terminal that negative pole is electrically connected to respectively.
7. photovoltaic module according to claim 6, wherein, described positive terminal terminal box has the lead-out wire that is electrically connected to the anodal lead-out wire of a described battery pack and does not have the negative pole that is electrically connected to a described battery pack.
8. photovoltaic module according to claim 6, wherein, described negative pole end terminal box has the lead-out wire of the negative pole that is electrically connected to a described battery pack and does not have the anodal lead-out wire that is electrically connected to a described battery pack.
9. photovoltaic module according to claim 6, wherein, described halfway junction box does not have lead-out wire.
10. according to the above photovoltaic module of claim, wherein, described a plurality of terminal boxes comprise a positive terminal terminal box and a negative pole end terminal box that is positioned at described photovoltaic substrate both sides.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541326.0A CN103646975A (en) | 2013-11-06 | 2013-11-06 | Photovoltaic assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310541326.0A CN103646975A (en) | 2013-11-06 | 2013-11-06 | Photovoltaic assembly |
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| CN103646975A true CN103646975A (en) | 2014-03-19 |
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| CN201310541326.0A Pending CN103646975A (en) | 2013-11-06 | 2013-11-06 | Photovoltaic assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109194281A (en) * | 2018-10-30 | 2019-01-11 | 江苏通灵电器股份有限公司 | A kind of thermal energy convection heat emission type photovoltaic module |
| JP2023531622A (en) * | 2020-07-04 | 2023-07-25 | 上邁（鎮江）新能源科技有限公司 | Photovoltaic array structure with low line loss |
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Application publication date: 20140319 |