CN116454154A - Photovoltaic cell assembly and manufacturing method - Google Patents
Photovoltaic cell assembly and manufacturing method Download PDFInfo
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- CN116454154A CN116454154A CN202310343271.6A CN202310343271A CN116454154A CN 116454154 A CN116454154 A CN 116454154A CN 202310343271 A CN202310343271 A CN 202310343271A CN 116454154 A CN116454154 A CN 116454154A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 38
- 229910000679 solder Inorganic materials 0.000 claims description 84
- 238000000034 method Methods 0.000 claims description 12
- 210000004027 cell Anatomy 0.000 description 88
- 239000002313 adhesive film Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 238000009434 installation Methods 0.000 description 3
- 210000003719 b-lymphocyte Anatomy 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67259—Position monitoring, e.g. misposition detection or presence detection
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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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
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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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- Condensed Matter Physics & Semiconductors (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a photovoltaic cell assembly and a manufacturing method thereof, wherein the assembly comprises the following components: the welding strip is provided with a first end part and a second end part, and a first contact surface and a second contact surface which are mutually away from each other are formed between the first end part and the second end part; the first battery piece is connected to the first contact surface and is arranged close to the first end part; the second battery piece is connected to the second contact surface and is arranged close to the second end part; the sum of the distance from the first battery piece to the second end part and the distance from the second battery piece to the first end part is smaller than or equal to the distance between the first end part and the second end part. Based on the arrangement, the structural compactness of the photovoltaic cell assembly can be improved, and the space occupation amount of the photovoltaic cell assembly is reduced, so that the problems that the existing photovoltaic cell occupies a large space and the space utilization rate is low are solved.
Description
Technical Field
The invention relates to the field of photovoltaic cells, in particular to a photovoltaic cell assembly and a manufacturing method thereof.
Background
At present, in the production process of the photovoltaic cell assembly, a plurality of battery pieces are connected in series for production, and gaps exist between the battery pieces in the series connection process of the battery pieces, so that the gaps occupy the space of the photovoltaic cell assembly, and the utilization rate of the photovoltaic cell assembly is low.
Disclosure of Invention
To solve at least one of the above technical problems, an aspect of the present invention provides a photovoltaic cell assembly, including:
a welding strip, which is provided with a first end part and a second end part, wherein a first contact surface and a second contact surface which are mutually away from each other are formed between the first end part and the second end part;
a first battery piece connected to the first contact surface, the first battery piece being disposed near the first end portion;
a second cell connected to the second contact surface, the second cell being disposed adjacent to the second end;
and the sum of the distance from the first battery piece to the second end part and the distance from the second battery piece to the first end part is smaller than or equal to the distance between the first end part and the second end part.
Optionally, the solder strip includes:
a body portion, wherein the first contact surface and the second contact surface are formed on the body portion;
a first protruding portion disposed on the first contact surface, the first protruding portion being disposed close to the second end portion, a first limiting surface being formed at an end of the first protruding portion away from the second end portion, the first battery piece being connected to the first limiting surface;
and a second protruding portion disposed on the second contact surface, wherein the second protruding portion is disposed close to the first end portion, a second limiting surface is formed at an end of the second protruding portion away from the first end portion, and the second battery piece is connected to the second limiting surface.
Optionally, the sum of the distance from the first limiting surface to the second end portion and the distance from the second limiting surface to the first end portion is smaller than or equal to the distance between the first end portion and the second end portion.
Optionally, the photovoltaic cell assembly further includes:
the first cover layer is arranged on the first battery piece, one side, far away from the welding strip body, of the second protruding part is connected to the first cover layer, and the second protruding part and the part, connected to the second protruding part, of the welding strip body are both positioned between the first battery piece and the first cover layer;
the second cover layer is arranged on the second battery piece, one side, far away from the welding strip body, of the first protruding portion is connected to the second cover layer, and the parts, connected to the first protruding portion, of the first protruding portion and the welding strip body are located between the second battery piece and the second cover layer.
Optionally, part of the first cover layer is connected to the second limiting surface, and the second battery piece is connected to the second limiting surface through the first cover layer; and/or
And part of the second covering layer is connected to the first limiting surface, and the first battery piece is connected to the first limiting surface through the second covering layer.
Optionally, the body portion, the first protruding portion, and the second protruding portion are integrally formed.
Optionally, the sum of the distance from the first battery piece to the second end and the distance from the second battery piece to the first end is smaller than the distance between the first end and the second end, so that a superposition portion exists between the orthographic projection of the first battery piece on the first contact surface and the orthographic projection of the second battery piece on the first contact surface.
Optionally, the length of the overlapping portion is greater than or equal to 0mm and less than or equal to 3mm along the direction from the first end portion to the second end portion.
In a second aspect, an embodiment of the present invention further provides a method for manufacturing a photovoltaic cell assembly, including:
disposing the first battery piece on the first contact surface, the first battery piece being disposed adjacent to the first end portion;
disposing the second battery piece on the second contact surface, the second battery piece being disposed near the second end portion;
and adjusting the position of the first battery piece relative to the welding strip and the position of the second battery piece relative to the welding strip so that the sum of the distance from the first battery piece to the second end and the distance from the second battery piece to the first end is smaller than or equal to the distance between the first end and the second end.
Optionally, in the case where the solder strip includes a body portion, a first protruding portion, and a second protruding portion, the method further includes:
adjusting the position of the first battery piece relative to the first protruding part so that the first battery piece is connected with the first limiting surface;
and adjusting the position of the first battery piece relative to the first protruding part so that the first battery piece is connected with the first limiting surface.
By means of the technical scheme, the first battery piece is arranged at the position, close to the first end, of the first contact surface, the second battery piece is arranged at the position, close to the second end, of the second contact surface, and the sum of the distance from the first battery piece to the second end and the distance from the second battery piece to the first end is smaller than or equal to the distance between the first end and the second end, so that at least end alignment and even partial superposition of the two battery pieces in the direction from the first contact surface to the second contact surface are ensured, the interval distance between the two battery pieces in the extending direction of the welding strip is reduced, based on the arrangement, the structural compactness of the photovoltaic battery assembly can be improved, the space occupation amount of the photovoltaic battery assembly is reduced, more battery pieces are conveniently arranged in a preferential space, and the problem that the occupied space of the photovoltaic battery assembly is large and the space utilization rate is not high is solved.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 shows a schematic structural diagram of a photovoltaic cell assembly provided by an embodiment of the present invention;
FIG. 2 shows a schematic partial enlargement of region A of FIG. 1;
fig. 3 shows a schematic exploded structural view of a photovoltaic cell assembly provided by an embodiment of the present invention;
fig. 4 shows a schematic exploded structural view of another photovoltaic cell assembly provided by an embodiment of the present invention;
fig. 5 shows a schematic application scenario diagram of a photovoltaic cell assembly provided by an embodiment of the present invention;
fig. 6 shows a schematic flow chart of a method for manufacturing a photovoltaic cell assembly according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In order to solve the problems of small space occupation and low utilization rate of the battery pieces caused by the arrangement mode of the current photovoltaic battery assembly, the embodiment of the invention provides a photovoltaic battery assembly, as shown in fig. 1 to 6, which comprises:
a solder strip 100 having a first end and a second end, wherein a first contact surface 110 and a second contact surface 120 facing away from each other are formed between the first end and the second end;
a first battery piece 200 connected to the first contact surface 110, the first battery piece 200 being disposed near the first end portion;
a second battery piece 300 connected to the second contact surface 120, the second battery piece 300 being disposed near the second end portion;
wherein the sum L2 of the distance L1 from the first battery piece 200 to the second end and the distance L2 from the second battery piece 300 to the first end is smaller than or equal to the distance H between the first end and the second end.
As shown in fig. 1 to 3, the photovoltaic cell assembly according to the embodiment of the present invention includes a solder strip 100, a first cell 200 and a second cell 300, wherein a first contact surface 110 and a second contact surface 120 facing away from each other are formed between a first end portion and a second end portion of the solder strip 100, and since the first contact surface 110 and the second contact surface 120 are two surfaces facing away from each other and are respectively disposed near two end portions, the first cell 200 is connected to a position where the first contact surface 110 is near the first end portion, and the second cell 300 is connected to a position where the second contact surface 120 is near the second end portion, the first cell 200 respectively connected to the first contact surface 110 and the second cell 300 respectively connected to the upper second contact surface 120 are respectively disposed near two end positions of the two contact surfaces of the solder strip 100, so as to achieve an arrangement of the two cells respectively corresponding to two opposite surfaces and two opposite directions of the solder strip 100.
As shown in fig. 1 to 4, at the same time, by defining that the sum of the distance L1 from the first cell 200 to the second end and the distance L2 from the second cell 300 to the first end is equal to the distance H between the first end and the second end, the photovoltaic cell assembly provided in the embodiment of the present application can achieve the alignment of the end of the first cell 200 near the second end and the end of the second cell 300 near the first end along the direction from the first contact surface 110 to the second contact surface 120, and because the first cell 200 and the second cell 300 are respectively located at the first contact surface 110 and the second contact surface 120, the contact between the first cell 200 and the second cell 300 is avoided, and the operation reliability of the photovoltaic cell assembly is ensured while the distance between the first cell 200 and the second cell 300 is reduced; by defining that the sum of the distance L1 from the first cell 200 to the second end and the distance L2 from the second cell 300 to the first end is smaller than the distance H between the first end and the second end, it is possible to achieve overlapping of the portion of the first cell 200 near the second end and the portion of the second cell 300 near the first end in the direction from the first contact surface 110 to the second contact surface 120, thereby further reducing the distance between the two cells in the extending direction of the solder strip 100, and further improving the structural compactness of the photovoltaic cell assembly.
In the prior art, the photovoltaic cell may include two or more than two battery pieces, and when the number of the battery pieces is two, the two battery pieces may be located on the same reference plane and arranged in parallel, and accordingly, a gap is often formed between the two battery pieces arranged in parallel, so as to facilitate penetration of the welding strip and prevent short circuit between the battery pieces. However, the arrangement of the battery cells in the above-mentioned conventional technology has a high requirement for the distribution range of the above-mentioned reference surface, that is, the number of possible arrangement of the battery cells tends to depend on the area of the above-mentioned reference surface, and it is often difficult to further increase the number of battery cells in the case where the installation space of the photovoltaic cell is limited.
Compared with the arrangement mode of the battery pieces in the conventional technology, the photovoltaic cell assembly provided by the embodiment of the application is based on the arrangement, on one hand, the first battery piece 200 and the second battery piece 300 can be respectively positioned at two sides of the welding strip, which are away from each other, and correspondingly, the first battery piece 200 and the second battery piece 300 can be respectively positioned at different datum planes, so that favorable conditions are provided for the first battery piece 200 and the second battery piece 300 to form space dislocation or overlapping; on the other hand, by providing the sum L2 of the distance L1 from the first cell 200 to the second end and the distance L2 from the second cell 300 to the first end, which is smaller than or equal to the distance H between the first end and the second end, the first cell 200 and the second cell 300 can be spatially aligned or partially overlapped, and the gap between the first cell 200 and the second cell 300 in the direction from the first end to the second end can be eliminated, thereby reducing the space occupation amount of the photovoltaic cell assembly.
It should be noted that, in practical application, the photovoltaic cell assembly provided in the embodiment of the present application may include more than two battery pieces, that is, the photovoltaic cell assembly may further include the third battery piece 400, the fourth battery piece 500, and so on, and accordingly, the number of solder strips may also be multiple.
As shown in fig. 5, taking the case where the number of the battery pieces is 4 as an example, correspondingly, the number of the solder strips 100 may be three, where the arrangement of the first battery piece 200 and the second battery piece 300 is as described above, and details are not repeated here; if the solder strip 100 connected to the first battery piece 200 and the second battery piece 300 is used as a first solder strip, the second battery piece 300 and the third battery piece 400 can be connected by a second solder strip, the second solder strip has the same structure as the first solder strip, and the connection mode is similar to that of the first battery piece 200 and the second battery piece 300 through the first solder strip, that is, the second battery piece 300 is arranged on the first contact surface 110 of the second solder strip and is close to the first end of the second solder strip, the third battery piece is arranged on the second contact surface 120 of the second solder strip and is close to the second end of the second solder strip, and the sum of the distance from the second battery piece 300 to the second end of the second solder strip and the distance from the third battery piece 400 to the first end of the second solder strip is smaller than or equal to the distance between the first end of the second solder strip and the second end of the second solder strip; similarly, the third battery piece 400 and the fourth battery piece 500 may be connected by a third solder strip, the third solder strip and the first solder strip have the same structure, and the sum of the distances from the third battery piece 400 to the second end of the third solder strip and the distances from the fourth battery piece 500 to the first end of the third solder strip is smaller than or equal to the distance from the first end of the third solder strip to the second end of the third solder strip, where the third battery piece 400 is disposed on the first contact surface 110 of the third solder strip and is disposed close to the first end of the third solder strip, and the fourth battery piece 500 is disposed on the second contact surface 120 of the third solder strip and is disposed close to the second end of the third solder strip. By analogy, the number of the battery pieces included in the photovoltaic cell assembly can also be more than four, for example, 5, 6, 7, 8, etc., and in the case that the number of the battery pieces is more than four, the corresponding welding strips are only required to be additionally arranged, and similar connection modes are adopted, which are not illustrated one by one.
It can be understood that, along with the increase of the number of the cells included in the photovoltaic cell assembly, the space which can be saved is increased, so that more installation space can be saved compared with the arrangement mode of the cells in the prior art, and further, under the condition that the installation space is limited, the further improvement of the arrangement number of the cells is realized, and the overall performance of the photovoltaic cell assembly is further enhanced.
As shown in fig. 1 to 3, in one embodiment, the solder strip 100 includes:
a main body 101, wherein the first contact surface 110 and the second contact surface 120 are formed on the main body 101;
a first protrusion 102 provided on the first contact surface 110, the first protrusion 102 being disposed near the second end, a first stopper surface 1021 being formed at an end of the first protrusion 102 away from the second end, the first battery piece 200 being connected to the first stopper surface 1021;
and a second protrusion 103 disposed on the second contact surface 120, wherein the second protrusion 103 is disposed close to the first end, a second limit surface 1031 is formed at an end of the second protrusion 103 away from the first end, and the second battery piece 300 is connected to the second limit surface 1031.
In this technical solution, a first contact surface 110 is formed on a body portion 101 of a solder strip 100, a first protruding portion 102 is disposed at a position where the first contact surface 110 is close to a second end, a first limiting surface 1021 is formed at one end of the first protruding portion 102 far away from the second end, the first limiting surface 1021 can be connected to perform a limiting function on a first battery piece 200, a second contact surface 120 is also formed on the body portion 101 of the solder strip 100, a second protruding portion 103 is disposed at a position where the second contact surface 120 is close to the first end, and a second limiting surface 1031 is formed at one end of the second protruding portion 103 far away from the first end, and the second limiting surface 1031 can be connected to perform a limiting function on a second battery piece 300. In this embodiment, a space is reserved for the arrangement of two battery pieces by defining the positions of two protruding portions, and when the battery pack is assembled, the first battery piece 200 can be limited by the first protruding portion to be close to the first end portion, and the second battery piece 300 can be limited by the second protruding portion to be close to the second end portion, so that the effect of being convenient for assembly is achieved.
In the above-mentioned solution, the first protrusion 102 may serve as a protrusion portion to limit the position of the first battery piece 200 not to exceed the first limiting surface 1021 of the first protrusion 102, and at most, only the battery piece may be aligned with the end of the first limiting surface 1021 of the first protrusion 102 of the solder strip 100, and similarly, the second protrusion 103 may serve as a protrusion portion to limit the position of the second battery piece 300 not to exceed the second limiting surface 1031 of the second protrusion 103, and at most, only the battery piece may be aligned with the end of the second limiting surface 1031 of the second protrusion 103 of the solder strip 100. In the above-mentioned scheme, the positions of the two protruding portions are defined, so that the positional relationship between the first battery piece 200 and the second battery piece 300 relative to the solder strip 100 is defined, and since the two battery pieces are limited by the limiting surfaces in the directions from the first contact surface 110 to the second contact surface 120 of the solder strip 100, when the battery pieces and the solder strip are assembled, the effect of quickly positioning where the battery pieces should be placed can be achieved based on the limiting surfaces of the protruding portions, so that the assembly difficulty is reduced and the assembly speed is also increased.
As shown in fig. 4, in one embodiment, the sum of the distance from the first limiting surface 1021 to the second end portion and the distance from the second limiting surface 1031 to the first end portion is smaller than or equal to the distance between the first end portion and the second end portion.
In the above-mentioned solution, by defining the sum of the distance L02 from the first limiting surface 1021 to the second end portion and the distance L01 from the second limiting surface 1031 to the first end portion to be smaller than or equal to the distance L between the first end portion and the second end portion, it is ensured that there is no overlapping portion between the first end portion and the second end portion in the direction from the first contact surface 110 to the second contact surface 120, so that the solder strip 100 forms a limiting space between the first end portion and the second end portion.
The above-mentioned limit space is limited by the second limit surface 1031 of the second protrusion 103 in the direction of the first contact surface 110 of the solder strip 100 near the first end, and the direction near the second end may form a space for accommodating the second battery chip 300; the second contact surface 120 of the solder strip 100 is limited by the first limiting surface 1021 of the first protrusion 102 in a direction close to the second end, and a space for accommodating the first battery chip 200 may be formed in a direction close to the first end. Thus, based on the foregoing arrangement, in the case where the sum of the distance from the first limiting surface 1021 to the second end portion and the distance from the second limiting surface 1031 to the first end portion is equal to the distance between the first end portion and the second end portion, when the end of the first battery piece 200 close to the second end portion abuts against the first limiting surface 1021 and the end of the second battery piece 300 close to the first end portion abuts against the second limiting surface 1031, the first battery piece 200 and the second battery piece 300 achieve at least the end alignment effect in the direction from the first contact surface 110 to the second contact surface 120; when the sum of the distance from the first limiting surface 1021 to the second end and the distance from the second limiting surface 1031 to the first end is smaller than the distance between the first end and the second end, when the end of the first battery piece 200 close to the second end abuts against the first limiting surface 1021 and the end of the second battery piece 300 close to the first end abuts against the second limiting surface 1031, the first battery piece 200 and the second battery piece 300 at least achieve a partial overlapping effect in the direction from the first contact surface 110 to the second contact surface 120. Through the above-mentioned setting of this embodiment, the interval distance in the extending direction of two battery pieces along welding strip 100 has been reduced, based on this setting, the solar cell panel of occupation less space can be assembled to the battery piece of same quantity, and the solar cell panel of same volume can assemble bigger or more battery piece to the battery piece occupation space and the not high problem of utilization ratio that the arrangement mode of photovoltaic cell assembly leads to at present have been solved.
In one embodiment, the photovoltaic cell assembly further includes:
a first cover layer 410 provided on the first battery piece 200, wherein a side of the second protrusion 103 away from the solder strip 100 body is connected to the first cover layer 410, and a portion of the second protrusion 103 and the solder strip 100 body connected to the second protrusion 103 are both located between the first battery piece 200 and the first cover layer 410;
and a second cover layer 420 disposed on the second battery plate 300, wherein a side of the first protrusion 102 away from the solder strip 100 body is connected to the second cover layer 420, and portions of the first protrusion 102 and the solder strip 100 body connected to the first protrusion 102 are located between the second battery plate 300 and the second cover layer 420.
In this solution, the first cover layer 410 is disposed on the first battery piece 200, the second protruding portion 103 is connected to the first cover layer 410 at a side far away from the solder strip 100 body, and the second protruding portion 103 and the portion of the solder strip 100 body connected to the second protruding portion 103 are both located between the first battery piece 200 and the first cover layer 410, so that the first cover layer 410 can protect and connect the solder strip 100 and the first battery piece 200 by covering them; the second cover layer 420 is disposed on the second battery plate 300, one side of the first protrusion 102 far away from the solder strip 100 body is connected to the second cover layer 420, and the parts of the first protrusion 102 and the solder strip 100 body connected to the first protrusion 102 are both located between the second battery plate 300 and the second cover layer 420, so that the second cover layer 420 can protect and connect the solder strip 100 and the second battery plate 300 by covering them.
It will be appreciated that, due to the thin thickness of the cover layer, fig. 2 illustrates the area a in fig. 1 in an enlarged manner, and it will be appreciated that, taking the second cover layer 420 as an example, after the second cover layer 420 is connected to the first limiting surface 1021, a portion may still extend in the direction of the first end portion, so as to implement that the second cover layer 420 is located between the first battery chip 200 and the first contact surface 110 of the solder strip 100.
In this embodiment, the cover layer may be a plastic cover layer. It can be understood that the plastic cover layer has the advantages of being thick, hard, transparent, temperature resistant and strong in toughness, so that the plastic cover layer is used as the cover layer of the battery piece, and has the advantages of good stealth effect, rebound resistance, low outgassing rate, good temperature resistance and difficult breakage.
In one embodiment, a portion of the first cover layer 410 is connected to the second limiting surface 1031, and the second battery piece 300 is connected to the second limiting surface 1031 through the first cover layer 410; and/or
A part of the second cover 420 is connected to the first stopper surface 1021, and the first battery piece 200 is connected to the first stopper surface 1021 through the second cover 420.
In this technical solution, while the first cover layer 410 covers the solder strip 100 and the battery piece to play a role in protecting, a part of the first cover layer 410 extends to the second limiting surface 1031, so that the part of the first cover layer 410 is located between the second battery piece 300 and the second contact surface 120 of the solder strip 100, thereby, when the process of connecting the battery piece, the solder strip 100 and the cover layer by pressurization or the like is performed, the buffer effect is played by virtue of the toughness characteristic of the solder strip 100, the hard contact between the second battery piece 300 and the solder strip 100 is reduced, and the risk of the second battery piece 300 being crushed is further reduced.
It can be appreciated that, while the second cover layer 420 covers the solder strip 100 and the battery piece to protect the battery piece, a part of the second cover layer 420 extends to the first limiting surface 1021 to be located between the first battery piece 200 and the first contact surface 110 of the solder strip 100, so that when the process of connecting the battery piece, the solder strip 100 and the cover layer by pressurization or the like is performed, the buffer effect is achieved by virtue of the toughness of the solder strip 100, the hard contact between the first battery piece 200 and the solder strip 100 is reduced, and the risk of the first battery piece 200 being crushed is further reduced.
In one embodiment, the body 101, the first protrusion 102, and the second protrusion 103 are integrally formed.
In this technical scheme, body portion 101, first bellying 102 and second bellying 103 are integrated into one piece structure, and the welding strip 100 that it constitutes is integrated into one piece structure promptly to the step of connecting body portion 101, first bellying 102 and second bellying 103 when having reduced the production, increased the stability of welding strip 100 when saving manufacturing cost, reduced when pressurizing, split risk between first bellying 102 and second bellying 103 and the body portion 101.
In one embodiment, the sum of the distance from the first battery piece 200 to the second end portion and the distance from the second battery piece 300 to the first end portion is smaller than the distance between the first end portion and the second end portion, so that a superposition portion exists between the orthographic projection of the first battery piece 200 on the first contact surface 110 and the orthographic projection of the second battery piece 300 on the first contact surface 110.
In this technical solution, in this embodiment, by defining that there is a partial overlapping portion between the orthographic projection of the first battery piece 200 on the first contact surface 110 and the orthographic projection of the second battery piece 300 on the first contact surface 110, the first battery piece 200 and the second battery piece 300 at least achieve a partial overlapping effect in the directions of the first contact surface 110 to the second contact surface 120, so that, while reducing the space waste, compared with the case that only the directions of the first contact surface 110 to the second contact surface 120 achieve the butt joint without overlapping, in this embodiment, the welding strip 100, a part of the first battery piece 200 and a part of the second battery piece 300 overlap in the directions of the first contact surface 110 to the second contact surface 120, more parts can be pressurized, and a more stable connection effect is achieved.
In one embodiment, the length of the overlapping portion is greater than or equal to 0mm and less than or equal to 3mm along the direction from the first end portion to the second end portion.
In this technical scheme, above-mentioned length of coincidence portion is between 0mm to 3mm, if the coincidence portion is too little, then corresponding unable effect that plays firm connection, perhaps even there is the separation of coincidence portion or the risk of raising the perk, if the coincidence portion is too big, then can have the battery piece overlap of bigger area, and then can shelter from incident light, causes the current loss.
The embodiment of the invention also provides a manufacturing method of the photovoltaic cell assembly, as shown in fig. 6, comprising the following steps:
s1001, disposing the first battery piece 200 on the first contact surface 110, wherein the first battery piece 200 is disposed close to the first end portion;
s1002, disposing the second battery piece 300 on the second contact surface 120, wherein the second battery piece 300 is disposed close to the second end portion;
s1003, adjusting the position of the first battery piece 200 relative to the solder strip 100 and the position of the second battery piece 300 relative to the solder strip 100 so that the sum of the distance from the first battery piece 200 to the second end portion and the distance from the second battery piece 300 to the first end portion is smaller than or equal to the distance between the first end portion and the second end portion.
The photovoltaic cell assembly produced by the above technical solution includes the solder strip 100, the first cell 200 and the second cell 300, wherein a first contact surface 110 and a second contact surface 120 which are away from each other are formed between a first end and a second end of the solder strip 100, a first contact surface 110 and a second contact surface 120 which are away from each other are formed between the first end and the second end, the first cell 200 is connected to a position where the first contact surface 110 is close to the first end, the second cell 300 is connected to a position where the second contact surface 120 is close to the second end, and a sum of a distance from the first cell 200 to the second end and a distance from the second cell 300 to the first end is smaller than or equal to a distance between the first end and the second end.
It can be appreciated that, since the first contact surface 110 and the second contact surface 120 are two surfaces facing away from each other and are disposed near two ends, the first battery piece 200 connected to the first contact surface 110 and the second battery piece 300 connected to the upper second contact surface 120 are disposed near two ends of the two contact surfaces of the solder strip 100, respectively, so as to achieve the arrangement of the two battery pieces relative to the two opposite surfaces and the two opposite directions of the solder strip 100. Compared with the design that two battery pieces are arranged on the same contact surface of the welding strip 100, the staggered lap welding mode can provide a more stable connection between the battery pieces and the welding strip 100, and in practical application, a plurality of battery pieces are generally connected in series, so that the connection mode that the welding strip 100 bypasses up and down between the battery pieces provides a more stable connection mode for the series connection of the plurality of battery pieces.
In the above-mentioned scheme, since the first battery piece 200 is disposed at the position close to the first end portion of the first contact surface 110, the second battery piece 300 is disposed at the position close to the second end portion of the second contact surface 120, and the sum of the distance from the first battery piece 200 to the second end portion and the distance from the second battery piece 300 to the first end portion is smaller than or equal to the distance between the first end portion and the second end portion, the alignment of at least the end portions between the two battery pieces in the direction from the first contact surface 110 to the second contact surface 120 is ensured, even the partial overlapping is achieved, the distance between the two battery pieces in the extending direction of the solder strip 100 is reduced, based on the arrangement, the same number of battery pieces can be assembled into a solar panel occupying smaller space, and the solar panel with the same volume can be assembled with larger or more battery pieces, so that the problem that the space occupied by the battery pieces of the current arrangement mode of the photovoltaic cell assembly is not high in utilization ratio is solved.
In practical application, the method for manufacturing the photovoltaic cell structure by connecting a plurality of photovoltaic cells in series according to the embodiment of the invention can comprise the following steps:
step 1: stretching the welding strip 100 to draw the welding strip 100 on the reel into the welding strip 100 with good straightness;
step 2: synchronous with step 1, the adhesive film on the scroll is pulled into the adhesive film with better straightness;
step 3: cutting a fixed adhesive film, and fixing the adhesive film by adsorption;
step 4: attaching the straightened welding strip 100 to the adhesive film;
step 5: cutting the fixed-length welding strip 100, wherein the welding strip 100 and the adhesive film are adhered together and can be clamped;
step 6: placing the cut adhesive film and the welding strip 100 on a carrier;
step 7: the a cell is grasped and placed on the solder strip 100 in a position covering half the length of the solder strip 100 and satisfying that the cell is close to the second end (it will be understood that the a cell is the second cell 300 of the first photovoltaic module under the influence of the process);
step 8: repeating the step 6, so that half of the cut adhesive film and the solder strip 100 cover the top of the a cell, and the other half of the adhesive film and the solder strip 100 are placed on the carrier (it can be understood that the a cell at this time is the second cell 300 of the first photovoltaic module and also the first cell 200 of the second photovoltaic module);
step 9: grabbing the B cell to cover the other half of the adhesive film and the solder strip 100 on the carrier (it can be understood that the B cell at this time is the second cell 300 of the second photovoltaic module and also the first cell 200 of the third photovoltaic module);
step 10: and the like until the number of the battery pieces reaches a preset number.
It will be appreciated that after the above-mentioned series connection of the battery pieces is completed, the battery pieces after the series connection may be turned over, and the first battery piece 200 is added to the first photovoltaic module.
In one embodiment, in the case where the solder ribbon 100 includes the body portion 101, the first protrusion 102, and the second protrusion 103, the method further includes:
adjusting the position of the first battery piece 200 relative to the first protrusion 102 so that the first battery piece 200 is connected to the first limiting surface 1021;
the position of the first battery piece 200 with respect to the first protrusion 102 is adjusted so that the first battery piece 200 is connected to the first limiting surface 1021.
According to the battery piece adjusted by the above technical scheme, since the first contact surface 110 is formed on the body portion 101 of the welding strip 100, the first protruding portion 102 is disposed at the position where the first contact surface 110 is close to the second end, and the first limiting surface 1021 is formed at the end of the first protruding portion 102 far away from the second end, so that the first limiting surface 1021 can be connected to perform the limiting function on the first battery piece 200, and the position of the first protruding portion 102 serving as the protruding portion can limit the first battery piece 200 not to exceed the first limiting surface 1021 of the first protruding portion 102, so that the battery piece can be aligned with the end of the first limiting surface 1021 of the first protruding portion 102 of the welding strip 100 at most.
In this solution, the body portion 101 of the solder strip 100 is further formed with a second contact surface 120, the second protruding portion 103 is disposed at a position where the second contact surface 120 is close to the first end, one end of the second protruding portion 103, which is far away from the first end, is formed with a second limiting surface 1031, which can be connected to the second limiting surface 1031 to perform a limiting function on the second battery piece 300, and the second protruding portion 103, as a protruding portion, can limit the position of the second battery piece 300 not to exceed the second limiting surface 1031 of the second protruding portion 103, so that only the battery piece can be aligned with the end of the second limiting surface 1031 of the second protruding portion 103 of the solder strip 100 at most. Therefore, the positions of the first battery piece 200 and the second battery piece 300 are limited relative to the welding strip 100, so that the situation that the two battery pieces are limited by a limiting surface in the direction from the first contact surface 110 to the second contact surface 120 is ensured, at least the end alignment is achieved, even partial superposition is achieved, the spacing distance between the two battery pieces in the extending direction of the welding strip 100 is reduced, based on the arrangement, the same number of battery pieces can be assembled into a solar battery board occupying smaller space, and the same volume of solar battery board can be assembled into larger or more battery pieces, and therefore the problems of small space occupation and low utilization rate of the battery pieces caused by the arrangement mode of the current photovoltaic battery assembly are solved.
In this application, the terms "first," "second," "third," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or unit in question must have a specific orientation, be configured and operated in a specific orientation, and therefore, should not be construed as limiting the present application.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A photovoltaic cell assembly, comprising:
the welding strip is provided with a first end part and a second end part, and a first contact surface and a second contact surface which are mutually away from each other are formed between the first end part and the second end part;
a first battery piece connected to the first contact surface, the first battery piece being disposed proximate to the first end;
a second battery piece connected to the second contact surface, the second battery piece being disposed proximate to the second end;
and the sum of the distance from the first battery piece to the second end part and the distance from the second battery piece to the first end part is smaller than or equal to the distance between the first end part and the second end part.
2. The photovoltaic cell assembly of claim 1, wherein the solder strip comprises:
a body portion, the first contact surface and the second contact surface being formed on the body portion;
the first bulge is arranged on the first contact surface and is close to the second end part, a first limiting surface is formed at one end, far away from the second end part, of the first bulge, and the first battery piece is connected to the first limiting surface;
the second protruding portion is arranged on the second contact surface and is close to the first end portion, a second limiting surface is formed at one end, away from the first end portion, of the second protruding portion, and the second battery piece is connected to the second limiting surface.
3. The photovoltaic cell assembly of claim 2 wherein,
and the sum of the distance from the first limiting surface to the second end part and the distance from the second limiting surface to the first end part is smaller than or equal to the distance between the first end part and the second end part.
4. The photovoltaic cell assembly of claim 3, further comprising:
the first covering layer is arranged on the first battery piece, one side, far away from the welding strip body, of the second protruding part is connected with the first covering layer, and the second protruding part and the part, connected with the second protruding part, of the welding strip body are both positioned between the first battery piece and the first covering layer;
the second covering layer is arranged on the second battery piece, one side, far away from the welding strip body, of the first protruding portion is connected with the second covering layer, and the first protruding portion and the welding strip body are connected with the first protruding portion and are located between the second battery piece and the second covering layer.
5. The photovoltaic cell assembly of claim 4 wherein the photovoltaic cell assembly comprises,
part of the first covering layer is connected with the second limiting surface, and the second battery piece is connected with the second limiting surface through the first covering layer; and/or
And part of the second covering layer is connected with the first limiting surface, and the first battery piece is connected with the first limiting surface through the second covering layer.
6. The photovoltaic cell assembly of any of claims 2 to 5 wherein,
the body part, the first protruding part and the second protruding part are of an integrated structure.
7. The photovoltaic cell assembly of any of claims 1 to 5 wherein,
the sum of the distance from the first battery piece to the second end part and the distance from the second battery piece to the first end part is smaller than the distance between the first end part and the second end part, so that the superposition part exists between the orthographic projection of the first battery piece on the first contact surface and the orthographic projection of the second battery piece on the first contact surface.
8. The photovoltaic cell assembly of claim 7 wherein the photovoltaic cell assembly comprises,
the length of the overlapping portion is greater than or equal to 0mm and less than or equal to 3mm in the direction from the first end portion to the second end portion.
9. A method of making a photovoltaic cell assembly, for making a photovoltaic cell assembly according to any one of claims 1 to 6, the method further comprising:
disposing the first battery piece at the first contact surface, the first battery piece being disposed proximate to the first end;
disposing the second battery piece at the second contact surface, the second battery piece being disposed proximate to the second end;
and adjusting the position of the first battery piece relative to the welding strip and the position of the second battery piece relative to the welding strip so that the sum of the distance from the first battery piece to the second end and the distance from the second battery piece to the first end is smaller than or equal to the distance between the first end and the second end.
10. The method of claim 7, wherein in the case where the solder strip includes a body portion, a first boss, and a second boss, the method further comprises:
adjusting the position of the first battery piece relative to the first protruding part so that the first battery piece is connected with the first limiting surface;
and adjusting the position of the first battery piece relative to the first protruding part so that the first battery piece is connected with the first limiting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310343271.6A CN116454154A (en) | 2023-03-31 | 2023-03-31 | Photovoltaic cell assembly and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310343271.6A CN116454154A (en) | 2023-03-31 | 2023-03-31 | Photovoltaic cell assembly and manufacturing method |
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| Publication Number | Publication Date |
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| CN116454154A true CN116454154A (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310343271.6A Withdrawn CN116454154A (en) | 2023-03-31 | 2023-03-31 | Photovoltaic cell assembly and manufacturing method |
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| CN (1) | CN116454154A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117352575A (en) * | 2023-12-04 | 2024-01-05 | 正泰新能科技股份有限公司 | Photovoltaic cell string, photovoltaic cell panel and photovoltaic cell assembly |
-
2023
- 2023-03-31 CN CN202310343271.6A patent/CN116454154A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117352575A (en) * | 2023-12-04 | 2024-01-05 | 正泰新能科技股份有限公司 | Photovoltaic cell string, photovoltaic cell panel and photovoltaic cell assembly |
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