CN114156352A - Cell panel and photovoltaic module - Google Patents
Cell panel and photovoltaic module Download PDFInfo
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- CN114156352A CN114156352A CN202010827533.2A CN202010827533A CN114156352A CN 114156352 A CN114156352 A CN 114156352A CN 202010827533 A CN202010827533 A CN 202010827533A CN 114156352 A CN114156352 A CN 114156352A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0352—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
- H01L31/035272—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions characterised by at least one potential jump barrier or surface barrier
- H01L31/035281—Shape of the body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022433—Particular geometry of the grid contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/043—Mechanically stacked PV cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
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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 cell panel and a photovoltaic module, and belongs to the technical field of solar energy. The battery plate comprises a plurality of battery strings connected in series or in parallel; the battery string comprises a plurality of first battery pieces positioned at the end parts and a plurality of second battery pieces positioned at the middle parts; the first battery piece and the second battery piece are both isosceles right triangle battery pieces, and the length of the bevel edge of the first battery piece is greater than that of the bevel edge of the second battery piece; in the first direction, the right-angle sides of every two adjacent second battery pieces are electrically connected, the right-angle sides of the first battery pieces are electrically connected with the right-angle sides of the second battery pieces, and in the second direction, the oblique sides of every two adjacent second battery pieces are aligned. Therefore, on one hand, the battery piece fragments generated when the square battery piece is cut can be reduced, and the utilization rate of the battery piece is further improved. On the other hand, the series voltage of the battery plates after series connection is higher than the maximum voltage allowed by the PN junction of the battery plates, and further the occurrence of safety accidents such as breakdown and short circuit of the battery plates can be avoided.
Description
Technical Field
The invention belongs to the technical field of solar energy, and particularly relates to a cell panel and a photovoltaic module.
Background
Solar energy has received increasing attention in recent years as an environmentally friendly renewable energy source. The solar cell panel is used as a core component for generating solar energy, and the quality of the solar cell panel directly influences the power generation performance of the solar energy.
Currently, a solar panel comprises a plurality of cell strings, and each solar panel generally comprises 10 cell strings, each 5 cell strings are connected in parallel, and each cell string comprises 34 strip-shaped cell pieces. In a possible implementation manner, each strip-shaped battery piece can be cut into 1/2 pieces or 1/3 pieces from square battery pieces, but each battery piece needs to be connected through welding, so that the production automation is not facilitated. Based on this, in order to reduce the number of used solder strips and the production cost of the battery string, in another possible implementation manner, the square battery pieces can be cut into 1/5 pieces or 1/6 pieces. Therefore, in the process of forming the battery strings by series welding of the battery pieces, the bus bars serving as the leads can be welded at the two ends of each battery string, and then the battery strings are connected with the bypass diode through the bus bars which penetrate through the bus bars, so that the connection of the battery strings can be completed.
However, in the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art: on one hand, although the number of welding strips is reduced, the use frequency of the battery piece is increased, so that the fragments of the battery piece are easily generated, and the utilization rate of the battery piece is reduced; on the other hand, as the number of the battery pieces included in the battery string is large, the series voltage is close to or even exceeds the maximum voltage allowed by the PN junction of the battery piece, the battery piece is broken down, short circuit or even is heated and burnt, and the safety of the battery panel is reduced.
Disclosure of Invention
The invention aims to provide a cell panel and a photovoltaic module, which can solve the problems of low utilization rate of cell pieces and insufficient safety of the cell pieces.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, the present invention provides a panel comprising a plurality of series or parallel connected battery strings;
the battery string comprises a first battery piece positioned at the end part and a second battery piece positioned in the middle part; the first battery piece and the second battery piece are both isosceles right triangle battery pieces, and the length of the bevel edge of the first battery piece is greater than that of the bevel edge of the second battery piece;
in a first direction, the right-angle sides of every two adjacent second battery pieces are electrically connected, the right-angle sides of the first battery pieces are electrically connected with the right-angle sides of the second battery pieces, in a second direction, the oblique sides of every two adjacent second battery pieces are aligned, and the first direction and the second direction are two intersecting directions;
the first end of the battery string is provided with at least one first battery piece, and the second end of the battery string is provided with at least two first battery pieces;
the first battery piece is arranged at the first end, the second battery piece is arranged at the second end, the straight line where the bevel edge of the first battery piece is located is intersected with the straight line where the bevel edge of the second battery piece is located, the bevel edge of the first battery piece and the bevel edge of the second battery piece are located in the same direction, and the straight line where the bevel edge of the first battery piece is located is intersected with the straight line where the bevel edge of the second battery piece is located at the second end.
Optionally, the number m of the first battery pieces and the number n of the second battery pieces included in the battery string satisfy:
m is 3, n is 2x +1, wherein x is more than or equal to 0.
Optionally, the first cell slice includes a first main gate and a first auxiliary gate, and the second cell slice includes a second main gate and a second auxiliary gate;
the first main grid is arranged on the right-angle side and the bevel edge of the first battery piece, and two ends of the first auxiliary grid are perpendicular to the two right-angle sides of the first battery piece respectively;
the second main grid is arranged on the right-angle edge of the second battery piece, and two ends of the second auxiliary grid are perpendicular to the two right-angle edges of the second battery piece respectively.
Optionally, the width D of the first main gate1Width D of the second main gate2Satisfies the following conditions:
0.2mm≤D1≤3mm，0.2mm≤D2≤3mm；
width D of the first sub-gate3Width D of the second auxiliary gate4Satisfies the following conditions:
0.01mm≤D3≤0.05mm，0.01mm≤D4≤0.05mm。
optionally, the first main gate and the second main gate are respectively independent of a solid line type main gate or a hollowed-out type main gate, wherein the hollowed-out shape of the hollowed-out type main gate is any one of a sectional hollowed-out shape, a triangular hollowed-out shape and a rhombic hollowed-out shape.
Optionally, the length L of the bevel edge of the first battery piece1And the length L of the bevel edge of the second cell piece2The relationship between them satisfies:
0＜L1-L2≤15mm；
and the length L of the bevel edge of the first battery piece1Satisfies the following conditions: l is not less than 150mm1≤210mm。
Optionally, in the first direction, every two adjacent right-angle sides of the second battery piece are overlapped through conductive adhesive, and the right-angle side of the first battery piece is overlapped with the right-angle side of the second battery piece through conductive adhesive.
Optionally, the bottom corner of the first cell piece and the bottom corner of each second cell piece are chamfers.
Optionally, the first battery plates at the second end of the battery string are connected in an insulating manner.
In a second aspect, the invention also provides a photovoltaic module comprising a panel as defined in any one of the first aspects.
Optionally, the photovoltaic module further includes a front cover plate, a rear cover plate, a first encapsulation adhesive film, and a second encapsulation adhesive film;
the front cover plate is bonded on the light receiving surface of the battery panel through the first packaging adhesive film, and the rear cover plate is bonded on the backlight surface of the battery panel through the first packaging adhesive film.
In the battery board provided by the invention, the battery board comprises a plurality of battery strings which are connected in series or in parallel, each battery string comprises a first battery piece positioned at the end part and a second battery piece positioned at the middle part, and the first battery piece and the second battery piece are isosceles right triangle battery pieces, so that the battery strings with the same light receiving area have fewer battery pieces required by the battery strings arranged by adopting the battery pieces in the shape, the series voltage can be reduced, the maximum voltage allowed by PN junctions of the battery pieces with the series voltage can be further avoided, the occurrence of safety accidents such as the battery pieces being broken down, short-circuited or even heated and burnt can be further avoided, and the safety performance of the battery strings formed by the first battery pieces and the second battery pieces is higher. And first battery piece and second battery piece are formed by square battery piece along the diagonal cutting, and then make a square battery piece can cut into 4 first battery pieces or 4 second battery pieces, consequently, square battery piece only need when the cutting through twice cutting can, like this, can reduce the battery piece of square battery piece production when the cutting, and then improved the utilization ratio of battery piece.
In the photovoltaic module provided by the invention, the photovoltaic module comprises the cell panel, and the photovoltaic module only needs to be electrically connected with each other when being typeset, so that the photovoltaic module can be fully automatically manufactured by adopting an automatic printing and automatic laying mode, the automatic difficulty of the conventional photovoltaic module manufacturing process is avoided, the production efficiency of the photovoltaic module can be improved, and the increase of the productivity of the photovoltaic module is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic diagram of a conventional solar panel;
FIG. 2 is a schematic structural diagram of a battery panel provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of a battery string provided in an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view taken in the direction E-E of FIG. 3;
fig. 5 is a schematic position diagram of a first main gate and a first auxiliary gate provided by an embodiment of the present invention;
fig. 6 is a schematic position diagram of a second main gate and a second auxiliary gate provided by the embodiment of the invention;
fig. 7 is a schematic diagram illustrating a position of a cutting region in a first battery piece according to an embodiment of the invention;
FIG. 8 is a schematic cross-sectional view of a photovoltaic module provided by an embodiment of the present invention;
figure 9 is a schematic diagram of the location of a pinout provided by an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a light receiving surface of a photovoltaic module according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a backlight surface of a photovoltaic module according to an embodiment of the present invention;
fig. 12 is a schematic connection diagram of a bus bar according to an embodiment of the present invention.
Reference numerals
1-a cell panel; 2-front cover plate; 3-a rear cover plate; 4-a first packaging adhesive film; 5-a second packaging adhesive film; 6-leading-out wire; 7-a bus bar; 8-frame; 9-a junction box; 11-a battery string; 71-a first busbar; 72-a second bus bar; 111-a first cell; 112-a second cell sheet; 113-conductive glue; 1111-a first main gate; 1112-a first secondary gate; 1113-cutting area; 1121 — second main gate; 1122-second sub-gate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms first, second and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that embodiments of the invention may be practiced otherwise than as specifically illustrated and described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
Before describing embodiments of the present invention in detail, a description will first be given of a production process of a conventional battery panel and technical problems occurring therein.
The following description will be made by taking a solar cell panel composed of strip-shaped cells 101 with large mass production as an example. Fig. 1 shows a schematic structural diagram of a conventional solar cell panel, and referring to fig. 1, the solar cell panel includes 10 cell strings, each 5 cell strings are connected in parallel, and each cell string includes 34 strip-shaped cell sheets 101.
Each strip-shaped battery piece 101 is formed by cutting 1/5 square battery pieces or 1/6 square battery pieces, and illustratively, strip-shaped battery pieces with the length of 156.75mm and the width of 31.35mm can be equally divided from square battery pieces with the side length of 156.75mm, so that the generation of battery piece fragments is easily caused, and the utilization rate of the battery pieces is further reduced.
Every 34 bar-shaped battery pieces 101 can be connected in series through conductive adhesive to form a battery string, bus bars need to be welded at two ends of each battery string to serve as leads, the bus bars are welded at two ends of each battery string to serve as leads, the bus bars need to be bent in the laying process, the light receiving proportion of the light receiving surface of the solar cell panel is increased, and an insulating gasket is arranged between the bent bus bars and the backlight surface of each battery piece, so that the direct connection of the anode and the cathode of each battery is avoided, and the short circuit of a circuit is avoided. A through bus bar is needed to be used for connecting the bypass diodes between every two solar panels, and therefore the influence of hot spots is reduced.
However, because the bus bar needs to be bent in the laying process, and the insulating gasket is arranged between the bent bus bar and the backlight surface of the cell, in the production process of the solar cell panel, the cell is very easy to be pressed in the process of installing the bus bar and the insulating gasket, so that the finished cell is cracked, and the yield of the whole assembly is reduced. Each strip-shaped battery piece 101 in each battery is formed by cutting 1/5 or 1/6 square battery pieces, so that fragments of the battery pieces are easily generated, and the utilization rate of the battery pieces is reduced; under the same light receiving area, the number of the battery pieces contained in the battery string is large, so that the series voltage is close to or even exceeds the maximum voltage (between 12V and 16V) allowed by the PN junction of the battery piece, and the battery piece is broken down, short-circuited or even burnt out due to heating. Meanwhile, a large number of bus bars (bus bars welded at two ends of each battery string and bus bars penetrating between every two solar panels) are used in the process of producing the battery pieces, and one set of machinery can not be adopted to complete the process of assembling the bus bars, so that the full-automatic difficulty of the solar panels is increased, and the production efficiency of the solar panels is reduced.
In summary, the cell and the photovoltaic module in the embodiment of the invention are provided for the existing solar cell panel, so as to solve the problems of low utilization rate of the existing cell, insufficient safety of the cell and low production automation degree of the cell panel.
The following describes in detail a cell panel and a photovoltaic module provided by an embodiment of the present invention with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Fig. 2 is a schematic structural diagram of a battery panel according to an embodiment of the present invention, where the battery panel includes a plurality of battery strings 11 connected in series or in parallel; the battery string 11 includes a first battery piece 111 at an end portion and a second battery piece 112 at a middle portion; the first battery piece 111 and the second battery piece 112 are both isosceles right triangle battery pieces, and the length of the bevel edge of the first battery piece 111 is greater than that of the bevel edge of the second battery piece 112; in the first direction, the right-angle sides of every two adjacent second battery pieces 112 are electrically connected, the right-angle side of the first battery piece 111 is electrically connected with the right-angle side of the second battery piece 112, in the second direction, the oblique sides of every two adjacent second battery pieces 112 are aligned, and the first direction and the second direction are two intersecting directions; the first end of the battery string 11 is at least provided with one first battery piece 111, and the second end of the battery string 11 is at least provided with two first battery pieces 111; the straight line where the bevel edge of the first cell piece 111 at the first end is located intersects the straight line where the bevel edge of the second cell piece 112 is located, the bevel edge of one first cell piece 111 at the second end and the bevel edge of the second cell piece 112 at the second end are located in the same direction, and the straight line where the bevel edge of the other first cell piece 111 is located intersects the straight line where the bevel edge of the second cell piece 111.
The first cell 111 may be formed by a square cell as shown in fig. 5 through a laser cutting technique, and during the cutting process, the square cell may be cut along a diagonal line of the square cell, and is equally divided into 4 isosceles right triangle cells on average. Similarly, the second battery piece 112 may be formed by a square battery piece as shown in fig. 6 through a laser cutting technique, which is not described again in this embodiment of the invention.
It should be noted that, because first battery piece 111 and second battery piece 112 are formed by the square battery piece along the diagonal cutting, and then make a square battery piece can cut into 4 first battery pieces 111 or 4 second battery pieces 112, consequently, square battery piece only need pass through twice cutting when the cutting can, can reduce the battery piece that square battery piece produced when the cutting like this, and then improved the utilization ratio of battery piece.
The cell strings 11 of different models may be arranged by different numbers of the first and second cells 111 and 112.
Optionally, the number m of the first battery pieces 111 and the number n of the second battery pieces 112 included in the battery string 11 satisfy: m is 3, n is 2x +1, wherein x is more than or equal to 0. The embodiment of the present invention will be described by taking an example in which the number m of the first battery cells 111 is 3 and the number n of the second battery cells 112 is 17 when x is equal to 8 as shown in fig. 3. Specifically, 3 first battery pieces 111 are located at the end of the battery string 11, and 17 second battery pieces 112 are located in the middle of the battery string 11. In the first direction, the right-angled sides of every two adjacent second battery pieces 112 can be electrically connected in an overlapping manner, and the right-angled sides of the first battery piece 111 and the right-angled sides of the second battery pieces 112 can also be electrically connected in an overlapping manner. It should be noted that, since the positive electrode and the negative electrode of the battery piece are located on two opposite surfaces of the battery piece, a plurality of battery pieces can be connected in series by electrically connecting the battery pieces in a lap joint manner. Wherein the first direction coincides with the direction indicated by X in fig. 3 and the second direction coincides with the direction indicated by Y in fig. 3.
It should be noted that, as shown in fig. 3, a straight line where the oblique side of the first cell a1 at the first end is located intersects a straight line where the oblique side of the second cell 112 is located, the oblique side of one first cell A3 at the second end is located in the same direction as the oblique side of the second cell 112, and both are in the X direction, where the oblique side of the first cell A3 is parallel to the oblique side of the second cell B16, the oblique side of the first cell A3 is parallel to the oblique side of the second cell B14, the oblique side of A3 connects the A3 cell of the next cell string 11, and the straight line where the oblique side of the other first cell a2 is located intersects the straight line where the oblique side of the second cell 112. As shown in fig. 2, taking the example that the battery panel includes 12 battery strings 11, six battery strings 11 located on one side and six battery strings 11 located on the other side are arranged in mirror symmetry. In this way, two first battery pieces a2 included in two adjacent battery strings 11 arranged in mirror symmetry can be connected to the bus bar 7 between the two battery plates 1, and the current can be led out. It should be noted that, as shown in fig. 3, the current of the battery string 11 may flow from a2 through B17, B15, B13, B11, B9, B7, B5, B3, B1 to a1, from a1 through B2, B4, B6, B8, B10, B12, B14, and B16 to A3, and then flows to the next adjacent battery string 11 through the oblique edge of A3. In addition, the first battery piece A3 included in the battery string 11 in the first row on the same side and the first battery piece A3 included in the battery string 11 in the second row are connected through a conductive adhesive or a conductive adhesive tape, the first battery piece a2 included in the battery string 11 in the second row on the same side and the first battery piece a2 included in the battery string 11 in the third row on the same side are connected through a bus bar, and the battery strings 11 in other rows are consistent with the above connection mode, which is not described again in the present invention. In this way, series connection between two adjacent rows of the battery strings 11 located in the vertical direction on the same side can be achieved. It should be noted that, in the embodiment of the present application, two battery strings 11 adjacent to each other in the vertical direction of the battery panel are connected in series to form a sub-circuit board, for example, every six battery strings 11 are connected in series in the vertical direction, and then connected in parallel with a sub-battery panel formed by six battery strings adjacent to each other in the horizontal direction, where the horizontal direction is the same as the direction indicated by P in fig. 2, and the vertical direction is the same as the direction indicated by Q in fig. 2. Under the unchangeable condition of voltage, be located parallelly connected between the sub-panel that a plurality of battery strings 11 adjacent on the horizontal direction of panel constitute and can increase the holistic electric current of panel one time, and then improve the power supply efficiency of panel.
Optionally, the first battery sheets 111 at the second end of the battery string 11 are connected in an insulating manner.
Specifically, taking the first cell piece 111 and the second cell piece 112 in fig. 3 as an example, the current of the cell string 11 runs from a2 through B17, B15, B13, B11, B9, B7, B5, B3, B1 to a1, and then from a1 through B2, B4, B6, B8, B10, B12, B14, and B16 to A3, if the current loop direction is changed by the first cell piece a1 and the first cell piece a2, therefore, the first cell piece a2 and the first cell piece A3 in the same string may be isolated by insulation treatment, for example, an insulating material such as an insulating high-temperature tape is used to isolate the first cell piece a2 and the first cell piece A3, so that the first cell piece a2 and the first cell piece A3 are not conductive. The first battery sheets 111 at the second end of each battery string 11 can be insulated and isolated by a high-temperature adhesive tape to achieve the above-mentioned effect, which is not described herein again.
Optionally, as shown in fig. 4, in the first direction, the right-angled edges of every two adjacent second battery pieces 112 are electrically connected through the conductive adhesive 113 in an adhering manner, and the right-angled edges of the first battery piece 111 and the right-angled edges of the second battery pieces 112 are electrically connected through the conductive adhesive 113. The conductive adhesive 113 may be formed by adding silver powder/silver-coated copper powder to an organosilicon system, adding silver powder to an acrylic acid bonding system, or silver-coated copper particles, or may be formed by replacing the conductive adhesive 113 with a conductive adhesive tape.
It should be noted that, since the first cell piece 111 and the second cell piece 112 are both isosceles right triangles, if each strip-shaped cell piece 101 shown in fig. 1 is formed by cutting 1/5 or 1/6 square cell pieces, the number of cell pieces required for the cell string 11 arranged by the isosceles triangle cell pieces is smaller in the cell string 11 with the same light receiving area, as shown in fig. 2. Specifically, for example, the battery string 11 with the length of 783.75mm and the width of 162.5mm is used, 25 battery pieces need to be connected in series when a strip-shaped battery piece is used, and only 17 second battery pieces 112 and 3 first battery pieces 111 need to be connected in series when a second battery piece 112 with an oblique side of 156.75mm and a first battery piece 111 with an oblique side of 162.5mm are used, so that the number of battery pieces connected in series in each battery string 11 is reduced, the series voltage can be reduced, the maximum voltage (12V-16V) allowed by the PN junction of the battery pieces with the series voltage can be avoided, the occurrence of safety accidents such as the battery pieces are broken down, short circuit, even heating and burning can be avoided, and the safety performance of the battery string 11 formed by the first battery piece 111 and the second battery piece 112 is higher.
In addition, as shown in fig. 5 and 6, each first cell piece 111 includes a first main grid 1111 and a plurality of first sub-grids 1112, and each second cell piece 112 includes a second main grid 1121 and a second sub-grid 1122; the first main grid 1111 is arranged on the right-angle side and the oblique side of the first battery piece 111, and two ends of the first auxiliary grid 1112 are respectively perpendicular to the two right-angle sides of the first battery piece 111; the second main grid 1121 is disposed on the right-angled edge of the second cell 112, and the two ends of the second sub-grid 1122 are perpendicular to the two right-angled edges of the second cell 112, respectively.
Specifically, the first main grids 1111 are arranged on the right-angled sides and the oblique sides of the first cell piece 111, as shown in fig. 7, the first main grids 1111 may be printed on four sides of the front and back sides of the square cell piece forming the first cell piece 111 and the positions of the diagonal lines, as shown in fig. 5, the ends of the first main grids 1111 are not connected, a cutting region 1113 is left at the position of the diagonal line, the first main grids 1111 are not arranged in the cutting region 1113, and the first main grids 1111 are arranged on two sides of the cutting region 1113, so that the right-angled sides of each first cell piece 111 are provided with the first main grids 1111 after the cutting along the diagonal lines of the square cell piece. It should be noted that, as shown in fig. 7, the widths of the first main grids 1111 disposed at both sides of the cutting region 1113 may be different, and the first main grid 1111 with a wider width and the first main grid 111 with a narrower width may be disposed at both sides of the cutting region 1113, so that after the cutting is completed, two perpendicular sides of each first cell 111 respectively have one wider first main grid 111 and one narrower first main grid 111. The second main grids 1121 are disposed at the right-angle sides of the second cell 112, so that the second main grids 1121 may be printed at positions of diagonal lines of the front and back sides of the square cell forming the second cell 112, and similarly, a cutting region may be left at the position of the diagonal line, so that the first right-angle side of each second cell 112 has a wider second main grid 1121, which is not described again in the present invention. The width of the cutting area may be between 0.2mm and 1mm, and the width of the cutting area is determined according to the cutting process, which is not limited in the embodiment of the present invention.
Further, each adjacent two first battery pieces 111 or each adjacent two second battery pieces 112 can be matched with each other because each first right-angle side of each first battery piece 111 has a wider first main grid 1111 and each first right-angle side of each second battery piece 112 has a wider second main grid 1121. The second cell sheet B13 and the second cell sheet B15 adjacent to each other in fig. 3 are taken as an example for explanation. Since the second cell B13 and the second cell B15 both have a wider second main grid 1121, during assembly, the wider second main grid 1121 of the second cell B13 and the wider second main grid 1121 of the second cell B15 can be electrically connected at the back surface, so that the second main grid 1121 in the overlapping region of every two adjacent second cells 112 is wider, and the resistance of the second cell 1121 after the whole second cells 1121 are connected in series is reduced; meanwhile, since the narrower second main grids 1121 of the second main grids 1121 are located on the light receiving surface, compared with the case that the wider second main grids 1121 are arranged on the light receiving surface, the light shielding area is smaller, which is beneficial to increasing the light absorption efficiency.
As shown in fig. 5 and 6, the first secondary grid 1112 is disposed on the light receiving surface of the first cell 111, the first secondary grid 1112 includes a plurality of grid lines arranged in a bent manner, each first secondary grid 1112 arranged in a bent manner includes two grid lines perpendicular to each other, and an end of each grid line is perpendicular to a right-angled side of one first cell 111, so that the two right-angled sides of each first cell 111 can be perpendicular to two ends of the first secondary grid 1112. The width of the first sub-grid 1112 is smaller than that of the first main grid 1111. Similarly, the second secondary grid 1122 is disposed on the light receiving surface of the second cell 112, and the second secondary grid 1122 includes a plurality of grid lines disposed in a bent manner, each second secondary grid 1112 disposed in a bent manner includes two grid lines perpendicular to each other, and an end of each grid line is perpendicular to a right-angle side of one second cell 112, so that the two right-angle sides of each second cell 112 can be perpendicular to two ends of the second secondary grid 1122. The second sub-gate 1122 has a smaller width than the second main gate 1121.
Note that the width D of the first main gate 1111 is1Width D of second main grid 11212Can satisfy the following conditions: d is not more than 0.2mm1≤3mm，0.2mm≤D2Less than or equal to 3mm, wherein the width D of the first main grid 11111May be equal to the width D of the second main gate 11212E.g. width D of the first main gate 11111And width D of second main gate 11212Are all 1mm, the width D of the first main grid 11111And width D of second main gate 11212Or may be different, such as the width D of the first main gate 11111Is 1.5mm, and the width D of the second main grid 11212Is 1mm, which is not limited in the examples of the present invention. In addition, the width D of the first sub-grid 11123Width D of the second sub-gate 11224Can satisfy the following conditions: d is not more than 0.01mm3≤0.05mm，0.01mm≤D4Less than or equal to 0.05 mm. Similarly, the width of the first sub-gate 1112 and the width of the second sub-gate 1122 may be equal or different, and the invention is not limited thereto.
It should be further noted that the first main grid 1111 and the second main grid 1121 are respectively independent solid line type main grids or hollow type main grids, wherein the hollow shape of the hollow type main grid can be any one of sectional hollow, triangular hollow and rhombic hollow. The first main gate 1111 and the second main gate 1121 may be gate types of different specifications. Thus, the grid type of the first main grid 1111 and the grid type of the second main grid 1121 are various, the width of the first main grid 1111 and the width of the second main grid 1121 are various, the width of the first auxiliary grid 1112 and the width of the second auxiliary grid 1122 are various, so that the specifications of the first cell piece 111 and the second cell piece 112 can be various, the selection of the cell panel is enriched, when the cell panel is manufactured, the selection of the optimized cell panel 1 can be selected based on the collection requirement of the current carriers of the cell panel and the shielding condition of sunlight, and the application scene of the cell panel 1 is not limited.
Further, the first main grid 1111, the second main grid 1121, the first auxiliary grid 1112 and the second auxiliary grid 1122 are all used for collecting carriers generated by the cell pieces, so that the first cell piece 111 can be used as a node cell piece of a series circuit in the case that the first main grid 1111 is located on the right-angled side and the oblique side of the first cell piece 111, and have the following functions: 1. the power generation function of the battery panel 1 is born; 2. as shown in fig. 3, the oblique sides of the first cell tab a1, the first cell tab a2 and the second cell tab 112 at both ends of the cell string 11 are perpendicular to each other, so that the first cell tab a1, the first sub-grid 1112 in the first cell tab a2 and the second sub-grid 1122 in the second cell tab 112 are conducted, taking the form of the layout in fig. 3 as an example, the current of the cell string 11 may flow from a2 through B17, B15, B13, B11, B9, B7, B5, B3 to A3, then from A3 through B3, B3 to A3, and then from A3 to the oblique side of the cell string 11, the first cell tab a of the first row and the second sub-grid tab a 1122 of the second cell tab 112 are located on the same side of the cell string 11, and the first row and the first cell tab A3 and the second row of the first cell tab A3 are located on the same side of the first cell string 11, and the first row of the first cell tab A3 and the first cell tab A3 are located on the same row, and the first row of the first tab A3 are connected through the first tab 3, and the first tab of the second tab of the first tab of the cell string 11 are located on the cell string located on the same row of the second tab of the same row of the cell string 11, and the cell string are located on the same side of the same row of the cell string, and the cell string are located on the same row of the cell string, and the first tab of the cell string, and the cell string are located on the same row of the first tab of the cell string 11, and the same row of the first tab of the cell string, and the second tab of the cell string are located on the same row of the cell string, and the first tab of the cell string are located on the same row of the cell string, and the cell string of the cell string, and the first tab of the cell string 11, and the second tab of the cell string 11, and the first tab of the cell string of the second tab of the cell string are located on the cell string of the same row of the cell string of the second tab of the cell string of the same row of The battery pieces A2 are connected through the bus bars, and the like, so that the series connection of a plurality of battery strings on the same side is realized, and therefore, the first battery piece A1 and the first battery piece A2 can be used for changing the direction of a current loop; 3. two first battery pieces a2 that two adjacent battery strings 11 that mirror symmetry set up included can connect the busbar 7 between two panels 1, and then can derive the electric current. 4. The oblique side of the first cell tab A3 may be connected with the oblique side of the first cell tab A3 of the adjacent cell string 11, enabling the series connection of two cell strings. In addition, the current is guided between the first battery piece 111 and the second battery piece 112 through the first main grid 1111 and the second main grid 1121, and the current is guided between two adjacent second battery pieces 112 directly through the second main grid 1121, so that the battery pieces do not need to be connected by using the bus bar 7 or a welding strip, and only the battery pieces need to be electrically connected with each other when the battery string 11 is laid out, so that the layout of the battery panel 1 is simpler and more convenient, and the automatic production of the battery panel 1 is improved.
In addition, since every two adjacent battery strings 11 are connected in series through the first battery piece a3, the length L of the oblique side of the first battery piece 1111Is longer than the length L of the bevel edge of the second cell 1122Therefore, when the two adjacent battery strings 11 can be effectively connected in series, the contact between the second battery pieces included by the two adjacent battery strings 11 can be avoided, the overlapping area of the connection between the two adjacent battery strings 11 is reduced, and the risk of short circuit between the battery strings 11 is reduced.
Based on this, the length L of the hypotenuse of the first cell sheet 1111And the length L of the hypotenuse of the second cell piece 1122The relationship between may satisfy: 0 < L1-L2Less than or equal to 15 mm. And the length L of the hypotenuse of the first cell 1111Satisfies the following conditions: l is not less than 150mm1Less than or equal to 210 mm. Illustratively, the length L of the hypotenuse of the first cell sheet 1111May be 156.0 + -0.25 mm, 156.5 + -0.25 mm, 156.75 + -0.25 mm, 157.0 + -0.25 mm, etc. Optionally, the base angle of each first cell 111 and the base angle of each second cell 112 are chamfers, so that the base angles of the first cells 111 and the base angles of the second cells 112 are not worn when the cell panel 1 is typeset, and the yield of the cell panel 1 can be improved.
Further, the length L of the hypotenuse of the first cell sheet 1111And the length L of the hypotenuse of the second cell piece 1122The relationship between may satisfy: L1-L2 is not less than 4mm and not more than 8mm, so that the length L1 of the inclined edge of the first cell piece 111 and the length L of the inclined edge of the second cell piece 112 are ensured2The difference between the first cell piece 111 and the second cell piece 112 is reduced, and the splicing between the first cell piece 111 and the second cell piece is more convenient.
Further, the first Cell 111 may be a Cell such as a single crystal Cell, a polycrystalline Cell, and the like, and the Cell production technology includes, but is not limited to, PERC (Passivated Emitter and reader Cell, Passivated Emitter and back Cell technology), N-type and N-type Emitter junction Passivated full back field diffusion Cell technology, and heterojunction Cell technology, which are not limited in this embodiment of the present invention.
It can be seen from the above embodiments that, the battery panel provided by the embodiment of the present invention includes a plurality of battery strings 11 connected in series or in parallel, each battery string 11 includes a first battery piece 111 located at an end and a plurality of second battery pieces 112 located at a middle, and the first battery piece 111 and the second battery pieces 112 are isosceles right triangle battery pieces, so that the battery strings 11 having the same light receiving area have fewer battery pieces required by the battery strings 11 arranged in the shape, and thus the series voltage can be reduced, and further the maximum voltage allowed by PN junctions of the battery pieces with the series voltage can be avoided, and further the occurrence of safety accidents such as the battery pieces being broken down, short-circuited, even burned out, and the like can be avoided, so that the safety performance of the battery strings 11 formed by the first battery pieces 111 and the second battery pieces 112 is higher. And first battery piece 111 and second battery piece 112 are formed by square battery piece along the diagonal cutting, and then make a square battery piece can cut into 4 first battery pieces 111 or 4 second battery pieces 112, consequently, square battery piece only need pass through twice cutting when the cutting can, can reduce the battery piece of square battery piece production when the cutting like this, and then improved the utilization ratio of battery piece.
In addition, the first main grid 1111 and the second main grid 1121 are used for guiding current between the first battery piece 111 and the second battery piece 112, and the second main grid 1121 is used for guiding current between two adjacent second battery pieces directly, so that the battery pieces do not need to be connected by using a bus bar 7 or a welding strip, and only the battery pieces need to be electrically connected with each other when the battery strings 11 are laid out, so that the layout of the battery panel 1 is simpler and more convenient, and the automatic production of the battery panel 1 is improved.
In the second embodiment, as shown in fig. 8, a photovoltaic module is further provided, and the photovoltaic module includes the solar panel 1 according to any one of the embodiments.
Specifically, as shown in fig. 10, the cell strings 11 of different models may be arranged by different numbers of first and second cell sheets 111 and 112, so that the cell strings 11 have different generated powers. Different numbers of battery strings 11 are connected in series to form battery boards 1, and the battery boards 1 can be bonded through conductive adhesive 113 or conductive adhesive tape or tin-coated oxygen-free copper strips (bus bars 7) to form a photovoltaic module. The beneficial effects of the photovoltaic module are consistent with those of the battery panel 1, and the embodiment of the invention is not repeated.
Optionally, as shown in fig. 8, the photovoltaic module further includes a front cover plate 2, a rear cover plate 3, a first packaging adhesive film 4, and a second packaging adhesive film 5; the front cover plate 2 is bonded on the light receiving surface of the battery panel 1 through a first packaging adhesive film 4, and the rear cover plate 3 is bonded on the backlight surface of the battery panel 1 through a first packaging adhesive film 4.
Specifically, the front cover plate 2, the battery plate 1 and the rear cover plate 3 are stacked through the first packaging adhesive film 4 and the second packaging adhesive film 5 to form a photovoltaic module semi-finished product. And then, putting the semi-finished photovoltaic module into a laminating machine, and carrying out a laminating process at 140 ℃ for 20min to obtain a laminated piece. The laminate is mounted with the junction box 9 and the frame 8 (or the modules) to form the finished photovoltaic module. The light receiving surface of the molded photovoltaic module is shown in fig. 10, and the backlight surface of the molded photovoltaic module is shown in fig. 11. As shown in fig. 9 and 11, the lead-out wire 6 passes through the rear cover plate 3 and is connected with the junction box 9, so that the current generated by the photovoltaic module is led out for the user to use. The distance between two adjacent lead wires 6 is 5mm to 7mm, and the lead length of the lead wire 6 is 13mm to 15 mm.
It should be noted that the front cover plate 2 may be made of a transparent material with high mechanical strength, such as glass or acrylic plate with a thickness of 2mm to 5mm, so as to ensure that the front cover plate 2 has high light transmittance and mechanical strength, and prolong the service life of the photovoltaic module. In addition, the first encapsulant film 4 may be EVA (Ethylene Vinyl Acetate), POE (polyolefin elastomer), or transparent silica gel with a transmittance of more than 91%, and when the encapsulant film is adhesive, the adhesive material may be prevented from affecting the light transmission. The second adhesive packaging film 5 may be transparent, white or other color EVA, POE or silica gel. The rear cover plate 3 may be a back plate, glass, or the like. The frame 8 can be an aluminum alloy or plastic frame 8, the front cover plate 2 and the rear cover plate 3 are both glass cover plate condition strips, and the frame 8 can be replaced by an installation block. The junction box 9 may be a single structure, or an intelligent junction box 9 having an inverter function or an automatic switching function may be adopted, which is not limited in the embodiment of the present invention. It should be further noted that, as shown in fig. 12, the bus bar 7 may include a first bus bar 71 and a second bus bar 72, and the first bus bar 71 and the second bus bar 72 are welded, wherein the thickness of the first bus bar 71 is 0.12mm, mainly for connecting two adjacent cell strings 11 in the Y direction in parallel, and the thickness of the second bus bar 72 is 0.4mm, mainly for welding with a metal electrode of the junction box 9, so as to lead out the current in the photovoltaic module.
It should be further noted that, when the photovoltaic module is typesetting, only the cells need to be electrically connected with each other, so that the photovoltaic module can be fully automated by adopting a mode of automatic printing and automatic laying, the automation difficulty of the existing photovoltaic module manufacturing process is avoided, the production efficiency of the photovoltaic module can be improved, and the increase of the productivity of the photovoltaic module is facilitated.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the means in the embodiments of the present invention is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in a reverse order depending on the functions involved, e.g., the described methods may be performed in an order different than that described, and various steps may also be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. A panel comprising a plurality of series or parallel connected battery strings;
the battery string comprises a plurality of first battery pieces positioned at the end parts and a plurality of second battery pieces positioned at the middle part; the first battery piece and the second battery piece are both isosceles right triangle battery pieces, and the length of the bevel edge of the first battery piece is greater than that of the bevel edge of the second battery piece;
in a first direction, the right-angle sides of every two adjacent second battery pieces are electrically connected, the right-angle sides of the first battery pieces are electrically connected with the right-angle sides of the second battery pieces, in a second direction, the oblique sides of every two adjacent second battery pieces are aligned, and the first direction and the second direction are two intersecting directions;
the first end of the battery string is provided with at least one first battery piece, and the second end of the battery string is provided with at least two first battery pieces;
the first battery piece is arranged at the first end, the second battery piece is arranged at the second end, the straight line where the bevel edge of the first battery piece is located is intersected with the straight line where the bevel edge of the second battery piece is located, the bevel edge of the first battery piece and the bevel edge of the second battery piece are located in the same direction, and the straight line where the bevel edge of the first battery piece is located is intersected with the straight line where the bevel edge of the second battery piece is located at the second end.
2. The battery plate as claimed in claim 1, wherein the number m of the first battery pieces and the number n of the second battery pieces included in the battery string satisfy:
m is 3, n is 2x +1, wherein x is more than or equal to 0.
3. The cell plate as claimed in claim 1, wherein the first cell sheet includes a first primary grid and a first secondary grid thereon, and the second cell sheet includes a second primary grid and a second secondary grid thereon;
the first main grid is arranged on the right-angle side and the bevel edge of the first battery piece, and two ends of the first auxiliary grid are perpendicular to the two right-angle sides of the first battery piece respectively;
the second main grid is arranged on the right-angle edge of the second battery piece, and two ends of the second auxiliary grid are perpendicular to the two right-angle edges of the second battery piece respectively.
4. Panel as claimed in claim 3, characterised in that said first main grid has a width D1Width D of the second main gate2Satisfies the following conditions:
0.2mm≤D1≤3mm，0.2mm≤D2≤3mm；
width D of the first sub-gate3Width D of the second auxiliary gate4Satisfies the following conditions:
0.01mm≤D3≤0.05mm，0.01mm≤D4≤0.05mm。
5. the battery plate according to claim 3, wherein the first main grid and the second main grid are respectively and independently a solid line type main grid or a hollowed-out type main grid, and the hollowed-out type main grid is hollowed out in any one of a sectional type, a triangular type and a rhombic type.
6. The battery plate as claimed in claim 1, wherein the length L of the hypotenuse of the first cell sheet1And the length L of the bevel edge of the second cell piece2The relationship between them satisfies:
0＜L1-L2≤15mm；
and the length L of the bevel edge of the first battery piece1Satisfies the following conditions: l is not less than 150mm1≤210mm。
7. The battery plate according to claim 1, wherein in the first direction, the right-angled edges of every two adjacent second battery pieces are overlapped through conductive adhesive, and the right-angled edges of the first battery pieces are overlapped with the right-angled edges of the second battery pieces through conductive adhesive.
8. The battery plate as claimed in claim 1, wherein the bottom corners of the first cell and the second cell are chamfered.
9. The panel as claimed in claim 1 wherein the first cell pieces at the second end of the string are connected in an insulated manner.
10. A photovoltaic module comprising a panel as claimed in any one of claims 1 to 8.
11. The photovoltaic module of claim 10, further comprising a front cover plate, a back cover plate, a first encapsulant film, and a second encapsulant film;
the front cover plate is bonded on the light receiving surface of the battery panel through the first packaging adhesive film, and the rear cover plate is bonded on the backlight surface of the battery panel through the first packaging adhesive film.
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| KR20180060579A (en) * | 2016-11-29 | 2018-06-07 | (주)루바니 | Smart sheet combined pattern pieces of solar cell and manufacturing method thereof |
| CN110226237A (en) * | 2016-09-26 | 2019-09-10 | 荷兰应用科学研究组织 | Thin film photovoltaic module |
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| CN103280467A (en) * | 2013-05-21 | 2013-09-04 | 浙江正泰太阳能科技有限公司 | Electrode pattern design for solar cell piece |
| CN110226237A (en) * | 2016-09-26 | 2019-09-10 | 荷兰应用科学研究组织 | Thin film photovoltaic module |
| KR20180060579A (en) * | 2016-11-29 | 2018-06-07 | (주)루바니 | Smart sheet combined pattern pieces of solar cell and manufacturing method thereof |
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