CN209896081U - Photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module - Google Patents
Photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module Download PDFInfo
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- CN209896081U CN209896081U CN201920539832.9U CN201920539832U CN209896081U CN 209896081 U CN209896081 U CN 209896081U CN 201920539832 U CN201920539832 U CN 201920539832U CN 209896081 U CN209896081 U CN 209896081U
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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
Abstract
The application discloses a photovoltaic module circuit unit, a photovoltaic module circuit and a photovoltaic module, wherein the photovoltaic module circuit unit comprises a first solar cell unit which is reversely connected with a diode in parallel, the first solar cell unit comprises a plurality of second solar cell units which are connected in series, the second solar cell unit comprises a plurality of third solar cell units which are connected in parallel, and the third solar cell unit comprises a solar cell or a plurality of solar cells which are connected in series; the photovoltaic module circuit comprises at least two photovoltaic module circuit units which are connected in series, when the solar cell in the third solar cell unit is shielded by a small part, the solar cell which is connected with the shielded solar cell in parallel can be used as a current path, so that the two ends of the shielded solar cell bear smaller back pressure, the power consumed by the shielded solar cell is reduced, the temperature of the shielded solar cell is reduced, and the risk of damage to the photovoltaic module is reduced.
Description
Technical Field
The utility model relates to a photovoltaic field, concretely relates to photovoltaic power generation field especially relates to a photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module.
Background
In order to achieve the goal of photovoltaic power utilization on the internet in 2020, high-power, high-efficiency and high-reliability photovoltaic modules have become the mainstream of the industry, and mainly comprise half-chip modules (1/2 sliced cells), laminated modules (1/5, 1/6 sliced cells) and related derivative module types based on the half-chip modules and the laminated modules. With the continuous update of the technology, the whole module will be gradually replaced by the two modules, and at present, part of the mainstream photovoltaic module manufacturers stop the production of the whole module.
Although the conventional half-sheet assembly is improved in assembly power and assembly temperature reliability compared with the whole assembly, when the half-sheet assembly is partially shielded, the shielded solar cell is in the cell string, the two ends of the shielded cell generate negative pressure under the combined action of the unshielded cell and the diode, and when the solar cell is partially shielded, the conventional assembly consumes large power, is high in temperature and is high in assembly damage risk.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a photovoltaic module circuit unit, a photovoltaic module circuit and a photovoltaic module with reduced power loss.
In a first aspect, the utility model discloses a photovoltaic module circuit unit, include the first solar cell unit with diode reverse parallel, first solar cell unit includes the second solar cell unit of a plurality of series connections, and the second solar cell unit includes a plurality of parallelly connected third solar cell units, and the third solar cell unit includes the solar cell of a solar cell or polylith series connection.
In a second aspect, the present invention provides a photovoltaic module circuit, comprising at least two photovoltaic module circuit units connected in series.
In a third aspect, the photovoltaic module of the present invention comprises a first solar cell region, a second solar cell region and a third solar cell region connected in series in sequence, wherein the first solar cell region comprises a first diode and a first solar cell unit, the first solar cell unit is connected in anti-parallel with the first diode, the first solar cell unit comprises a plurality of second solar cell units connected in series, the second solar cell unit comprises a plurality of third solar cell units connected in parallel, the second solar cell region comprises a second diode and a fourth solar cell unit, the fourth solar cell unit is connected in anti-parallel with the second diode, the fourth solar cell unit comprises a first sub-unit and a second sub-unit connected in series, the first sub-unit and the second sub-unit comprise a plurality of fifth solar cell units connected in series, the fifth solar cell unit comprises a plurality of sixth solar cell units connected in parallel, the third solar cell region comprises a third diode and a seventh solar cell unit, the seventh solar cell unit and the third diode are connected in an anti-parallel mode, the seventh solar cell unit comprises a plurality of eighth solar cell units connected in series, the eighth solar cell unit comprises a plurality of ninth solar cell units connected in parallel, and the third solar cell unit, the sixth solar cell unit and the ninth solar cell unit all comprise one solar cell or a plurality of solar cells connected in series.
According to the technical scheme provided by the embodiment of the application, the plurality of third solar battery units are connected in parallel to form the second solar battery unit, the plurality of second solar battery units are connected in series to form the first solar battery unit, the first solar battery unit is connected with the diode in reverse parallel, when the solar battery in the third solar battery unit is shielded by a small part, the solar battery connected with the shielded solar battery in parallel can be used as a current path, so that the two ends of the shielded solar battery bear smaller back pressure, the power consumed by the shielded solar battery is reduced, the temperature of the shielded solar battery is reduced, the risk of damage of the photovoltaic module is reduced, and the problems of large power consumption and high temperature of the existing photovoltaic module when the small part of the battery is shielded can be solved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a conventional photovoltaic module circuit;
fig. 2 is a schematic structural diagram of a photovoltaic module circuit unit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a photovoltaic module circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a circuit of a photovoltaic module according to an embodiment of the present invention being shielded;
FIG. 5 is a schematic view of a conventional photovoltaic module being blocked;
FIG. 6 is a schematic diagram comparing power of a shielded battery;
fig. 7 is a schematic view illustrating a photovoltaic module according to an embodiment of the present invention being shielded;
FIG. 8 is a schematic view of a conventional photovoltaic module being occluded;
FIG. 9 is a schematic diagram comparing battery power;
fig. 10 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
One of the embodiments of the present invention is, please refer to fig. 2, the circuit unit of the photovoltaic module of the present invention includes a first solar cell unit 42 connected in parallel with a diode 41 in reverse direction, the first solar cell unit 42 includes a plurality of second solar cell units 43 connected in series, the second solar cell unit 43 includes a plurality of third solar cell units 44 connected in parallel, and the third solar cell unit 44 includes a solar cell 45 or a plurality of solar cells 45 connected in series.
The embodiment of the utility model provides an in, parallelly connected constitution second solar cell unit with a plurality of third solar cell units, a plurality of second solar cell unit establish ties and constitute first solar cell unit, first solar cell unit and diode are reverse parallelly connected, when solar cell in the third solar cell unit is sheltered from by the fritter, solar cell parallelly connected with this solar cell who is sheltered from can regard as the current path, make the solar cell both ends that are sheltered from bear less back pressure, do not bear the back pressure even, thereby reduce the power of being sheltered from solar cell consumption, do not consume power even, reduce the temperature of being sheltered from solar cell, reduce the risk that photovoltaic module damaged.
Another embodiment of the present invention is a photovoltaic module circuit, comprising at least two photovoltaic module circuit units connected in series.
The embodiment of the utility model provides an in, parallelly connected constitution second solar cell unit with a plurality of third solar cell units, a plurality of second solar cell unit establish ties and constitute first solar cell unit, first solar cell unit and diode are reverse parallelly connected, when solar cell in the third solar cell unit is sheltered from by the fritter, solar cell parallelly connected with this solar cell who is sheltered from can regard as the current path, make the solar cell both ends that are sheltered from bear less back pressure, do not bear the back pressure even, thereby reduce the power of being sheltered from solar cell consumption, do not consume power even, reduce the temperature of being sheltered from solar cell, reduce the risk that photovoltaic module damaged.
Another embodiment of the present invention is, referring to fig. 3, a photovoltaic module, comprising a first solar cell region, a second solar cell region and a third solar cell region which are connected in series in sequence, wherein the first solar cell region comprises a first diode 11 and a first solar cell unit 12, the first solar cell unit 12 is connected in anti-parallel with the first diode 11, the first solar cell unit 12 comprises a plurality of second solar cell units 13 connected in series, the second solar cell unit 13 comprises a plurality of third solar cell units 14 connected in parallel, the second solar cell region comprises a second diode 21 and a fourth solar cell unit 22, the fourth solar cell unit 22 is connected in anti-parallel with the second diode 21, the fourth solar cell unit 22 comprises a first subunit 221 and a second subunit 222 connected in series, the first subunit 221 and the second subunit 222 comprise a plurality of fifth solar cell units 23 connected in series, the fifth solar cell unit 23 includes a plurality of sixth solar cell units 24 connected in parallel, the third solar cell region includes a third diode 31 and a seventh solar cell unit 32, the seventh solar cell unit 32 is connected in anti-parallel with the third diode 31, the seventh solar cell unit 32 includes a plurality of eighth solar cell units 33 connected in series, the eighth solar cell unit 33 includes a plurality of ninth solar cell units 34 connected in parallel, and each of the third solar cell unit 14, the sixth solar cell unit 24 and the ninth solar cell unit 34 includes one solar cell or a plurality of solar cells connected in series.
The utility model discloses an in the embodiment, with first solar cell region, the second solar cell region, the regional series connection of third solar cell, solar cell in first solar cell region, the second solar cell region and the regional interior solar cell of third solar cell appear when the minizone shelters from, for example, single solar cell is sheltered from the thing by leaves etc. and is sheltered from, can form the current path with this solar cell who is sheltered from the solar cell parallelly connected, the messenger is sheltered from the solar cell both ends and bears less back pressure, thereby reduce the power of being sheltered from solar cell consumption, reduce the temperature of being sheltered from solar cell, reduce the risk that photovoltaic module damaged.
Fig. 3 is a schematic diagram of a third solar cell unit, a sixth solar cell unit, and a ninth solar cell unit each including one solar cell.
Fig. 10 is a schematic diagram of a third solar cell unit, a sixth solar cell unit, and a ninth solar cell unit each including two solar cells connected in series.
Fig. 11 is a schematic view of a third solar cell unit, a sixth solar cell unit, and a ninth solar cell unit each including three solar cells connected in series.
Fig. 12 is a schematic diagram of a third solar cell unit, a sixth solar cell unit, and a ninth solar cell unit each including four solar cells connected in series.
Fig. 13 is a schematic diagram of a third solar cell unit, a sixth solar cell unit, and a ninth solar cell unit each including five solar cells connected in series.
Further, the first solar cell unit 12 and the seventh solar cell unit 32 are symmetrically disposed about the straight line as the symmetry axis, and the first sub-unit 221 and the second sub-unit 22 are symmetrically disposed about the straight line as the symmetry axis.
In an embodiment of the present invention, fig. 1 is a schematic circuit diagram of a conventional photovoltaic module. Fig. 3 is a schematic circuit diagram of a photovoltaic module according to the present application.
Fig. 4 is a schematic diagram of a shielded single cell of a photovoltaic module of the present application, fig. 5 is a schematic diagram of a shielded single cell of a conventional photovoltaic module, and fig. 6 is a power comparison of the shielded cells in the shielding conditions shown in fig. 4 and fig. 5, where when a single cell of a certain module in an array shields 20% of the area of the cell, the shielded cell in the array of the present application does not consume power, but can output 1.22W of power outwards; whereas the shaded cells in the existing array of half-tile assemblies consume 6.17W of power. Therefore, under the same shielding condition, the temperature of the shielded cell of the photovoltaic module is lower. The temperature ratio of the two is shown in table 1:
TABLE 1
Fig. 7 is a schematic diagram of a photovoltaic module according to the present application shielding a bottom row of cells in a vertical installation situation, fig. 8 is a schematic diagram of a conventional photovoltaic module shielding a bottom row of cells in a vertical installation situation, fig. 9 is a power comparison between single row of cells in the shielding situations shown in fig. 7 and fig. 8, an abscissa in fig. 9 represents the number of components shielded in a 22-block component array, and an ordinate represents the output power of the shielded component array. When the photovoltaic module array of the application shelters from the front 15 blocks of assemblies, the output power of the array is superior to that of the existing half-sheet assembly array, wherein when the 9 th block of assemblies is sheltered, the output power of the photovoltaic module array of the application is 5975W, the output power of the existing half-sheet assembly array is 4800W, the former is higher than the latter by nearly 1200W, and therefore the photovoltaic module of the application can reduce the power attenuation when the bottom row shelters from in the array.
Fig. 9 is a schematic diagram of a photovoltaic module according to the present application blocking a single-row cell under a vertical installation condition, fig. 10 is a schematic diagram of a photovoltaic module according to the prior art blocking a single-row cell under a vertical installation condition, fig. 11 is a power comparison of a single-row cell between the photovoltaic module and the single-row cell under the blocking condition shown in fig. 9 and 10, and when a single-row cell is vertically installed in an area where a second solar cell unit of the present application is located to block, output power of the two photovoltaic modules is almost the same under any blocking quantity.
Furthermore, the solar cells are electrically connected through a tin-plated solder strip or a conductive adhesive tape.
The utility model discloses an in the embodiment, carry out the electricity through tin-plating solder strip or conductive adhesive tape between the solar cell and connect, be sheltered from at solar cell and cause power loss, when solar cell generates heat, tin-plating solder strip or conductive adhesive tape are hot good conductor, can avoid solar cell temperature to promote too high, have protected photovoltaic module effectively.
Further, the first solar cell region includes M1Column, N1A solar cell, wherein M is 2. ltoreq1≤10，8≤N1≤20，
The second solar cell region includes M2Column, N2A line solar cell, wherein M is more than or equal to 12≤5，16≤N2≤40，
The third solar cell region includes M3Column, N3In the solar cell, M is more than or equal to 23≤10，8≤N3≤20。
The embodiment of the utility model provides an in, can remove to arrange first solar cell region, second solar cell region and third solar cell region according to actual conditions, improve photovoltaic module's variability.
Further, the first solar cell region and the second solar cell region are electrically connected by a bus bar, and the second solar cell region and the third solar cell region are electrically connected by a bus bar.
The utility model discloses an in the embodiment, first solar cell is regional to be connected through the busbar electricity with the second battery is regional, and the second battery is regional to be connected through the busbar electricity with the third battery is regional, and the busbar is the electrically conductive connecting part of multilayer laminated structure, has low inductance, anti-interference, high frequency filter characteristics such as effectual, good reliability, save space, the assembly is succinct swift.
Further, a first lead wire 15 and a second lead wire 35 are included, the first lead wire 15 is led out from the side of the first solar cell region away from the straight line, and the second lead wire 35 is led out from the side of the third solar cell region away from the straight line.
In an embodiment of the present invention, the first outgoing line and the second outgoing line lead out the positive electrode and the negative electrode, respectively, and specifically, if the first outgoing line leads out the positive electrode, the second outgoing line leads out the negative electrode; if the first lead-out wire leads out the negative electrode, the second lead-out wire leads out the positive electrode. The solar cell is convenient to typeset, and the adjacent solar cells are electrically connected, so that the production and processing difficulty is reduced, and the photovoltaic module is easy to produce in large quantity.
Further, the number of solar cells in the first solar cell region, the second solar cell region and the third solar cell region is equal.
Further, the positive electrode of the first solar cell region is disposed on a side of the first solar cell region away from the straight line, the negative electrode of the third solar cell region is disposed on a side of the third solar cell region away from the straight line, or,
the negative electrode of the first solar cell region is arranged on one side, away from the straight line, of the first solar cell region, and the positive electrode of the third solar cell region is arranged on one side, away from the straight line, of the third solar cell region.
The utility model discloses an in the embodiment, be convenient for carry out the electricity to each solar cell of photovoltaic module and connect, be convenient for typeset solar cell, carry out the electricity to adjacent battery piece and connect to reduce the production and processing degree of difficulty, make photovoltaic module volume production easier.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. The photovoltaic module circuit unit is characterized by comprising a first solar cell unit which is connected with a diode in an inverse parallel mode, wherein the first solar cell unit comprises a plurality of second solar cell units which are connected in series, the second solar cell unit comprises a plurality of third solar cell units which are connected in parallel, and the third solar cell unit comprises a solar cell or a plurality of solar cells which are connected in series.
2. A photovoltaic module circuit comprising at least two photovoltaic module circuit units of claim 1 connected in series.
3. A photovoltaic module is characterized by comprising a first solar cell area, a second solar cell area and a third solar cell area which are sequentially connected in series, wherein the first solar cell area comprises a first diode and a first solar cell unit, the first solar cell unit is connected with the first diode in an anti-parallel mode, the first solar cell unit comprises a plurality of second solar cell units connected in series, the second solar cell unit comprises a plurality of third solar cell units connected in parallel, the second solar cell area comprises a second diode and a fourth solar cell unit, the fourth solar cell unit is connected with the second diode in an anti-parallel mode, the fourth solar cell unit comprises a first sub-unit and a second sub-unit connected in series, and the first sub-unit and the second sub-unit comprise a plurality of fifth solar cell units connected in series, the fifth solar cell unit comprises a plurality of sixth solar cell units connected in parallel, the third solar cell unit comprises a third diode and a seventh solar cell unit, the seventh solar cell unit is connected with the third diode in anti-parallel, the seventh solar cell unit comprises a plurality of eighth solar cell units connected in series, the eighth solar cell unit comprises a plurality of ninth solar cell units connected in parallel, and the third solar cell unit, the sixth solar cell unit and the ninth solar cell unit all comprise one solar cell or a plurality of solar cells connected in series.
4. The photovoltaic module of claim 3, wherein the first and seventh solar cells are symmetrically disposed about a straight line, and the first and second sub-units are symmetrically disposed about the straight line.
5. The photovoltaic module of claim 3, wherein the solar cells are electrically connected by a solder tin-plated tape or a conductive tape.
6. The photovoltaic module of claim 3 wherein the first solar cell region comprises M1Column, N1The solar cell is arranged, wherein M is more than or equal to 21≤10，8≤N1≤20，
The second solar cell region includes M2Column, N2The solar cell is arranged, wherein M is more than or equal to 12≤5，16≤N2≤40，
The third solar cell region includes M3Column, N3The solar cellWherein M is more than or equal to 23≤10，8≤N3≤20。
7. The photovoltaic module of claim 3 wherein the first solar cell region and the second solar cell region are electrically connected by a bus bar and the second solar cell region and the third solar cell region are electrically connected by a bus bar.
8. The photovoltaic module of claim 4, comprising a first lead out from a side of the first solar cell region away from the line and a second lead out from a side of the third solar cell region away from the line.
9. The photovoltaic module of claim 3 wherein the number of solar cells within the first, second and third solar cell regions is equal.
10. The photovoltaic module of claim 4, wherein the positive electrode of the first solar cell region is disposed on a side of the first solar cell region away from the line, the negative electrode of the third solar cell region is disposed on a side of the third solar cell region away from the line, or,
the negative electrode of the first solar cell region is arranged on one side, away from the straight line, of the first solar cell region, and the positive electrode of the third solar cell region is arranged on one side, away from the straight line, of the third solar cell region.
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| CN110047964A (en) * | 2019-04-19 | 2019-07-23 | 泰州隆基乐叶光伏科技有限公司 | Photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110047964A (en) * | 2019-04-19 | 2019-07-23 | 泰州隆基乐叶光伏科技有限公司 | Photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module |
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