CA3056207C - Solar cell strip, solar cell and solar cell module - Google Patents
Solar cell strip, solar cell and solar cell module Download PDFInfo
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- CA3056207C CA3056207C CA3056207A CA3056207A CA3056207C CA 3056207 C CA3056207 C CA 3056207C CA 3056207 A CA3056207 A CA 3056207A CA 3056207 A CA3056207 A CA 3056207A CA 3056207 C CA3056207 C CA 3056207C
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- 230000003247 decreasing effect Effects 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000001465 metallisation Methods 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000679 solder Inorganic materials 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
- 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
-
- 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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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The present invention provides a solar cell strip, a solar cell and solar cell module. The solar cell strip includes a front busbar positioned adjacent to one side edge of a front surface of the solar cell strip; and at least two patterned regions arranged side by side at one side of the front busbar along a first direction perpendicular to the front busbar. Each patterned region is provided with a plurality of finger electrodes electrically connecting with the front busbar. The density of the finger electrodes in at least two patterned regions is gradually decreased in the first direction.
Description
SOLAR CELL STRIP, SOLAR CELL AND SOLAR CELL MODULE
TECHNICAL FIELD
[0001]
The present invention relates to the field of photovoltaics, and in particular to a .. solar cell strip, a solar cell and a solar cell module with lower resistance.
BACKGROUND
TECHNICAL FIELD
[0001]
The present invention relates to the field of photovoltaics, and in particular to a .. solar cell strip, a solar cell and a solar cell module with lower resistance.
BACKGROUND
[0002]
Nowadays, shingled module with a relatively higher conversion efficiency is one of the development directions of the solar cell module.
Nowadays, shingled module with a relatively higher conversion efficiency is one of the development directions of the solar cell module.
[0003] The shingled module is formed by a plurality of solar cell strips.
The adjacent solar cell strips in said shingled module are partially overlapped with each other and bonded by a special conductive adhesive. Thus, the solar cell strips can be arranged more closely, the gaps in the shingled module will be decreased; and more solar cell strips can be set in a same solar cell module model, which can increase the light absorption area.
Besides, as described above, the bonded connection between adjacent solar cell strips will not need any solder strip, which reduces the manufacture cost.
The adjacent solar cell strips in said shingled module are partially overlapped with each other and bonded by a special conductive adhesive. Thus, the solar cell strips can be arranged more closely, the gaps in the shingled module will be decreased; and more solar cell strips can be set in a same solar cell module model, which can increase the light absorption area.
Besides, as described above, the bonded connection between adjacent solar cell strips will not need any solder strip, which reduces the manufacture cost.
[0004]
However, FIG. 1 is a schematic view of a front surface of a traditional solar cell, as shown in FIG. 1, The traditional solar cell 100' comprises a plurality of elongated cell units 1'. The elongated cell unitsl' can be separated to form a plurality of traditional solar cell strips. The metallization pattern on a front surface of a traditional solar cell strip is of comb-shaped. When the traditional solar cell strips are overlapped and bonded to formed a shingled module the resistance loss of front metallization pattern is relatively higher. As a result, the conversion efficiency of the shingled module will be difficult to increase.
However, FIG. 1 is a schematic view of a front surface of a traditional solar cell, as shown in FIG. 1, The traditional solar cell 100' comprises a plurality of elongated cell units 1'. The elongated cell unitsl' can be separated to form a plurality of traditional solar cell strips. The metallization pattern on a front surface of a traditional solar cell strip is of comb-shaped. When the traditional solar cell strips are overlapped and bonded to formed a shingled module the resistance loss of front metallization pattern is relatively higher. As a result, the conversion efficiency of the shingled module will be difficult to increase.
[0005]
In view of this, it is necessary to provide an improved solar cell strip, a solar cell and a solar cell module.
SUMMARY
In view of this, it is necessary to provide an improved solar cell strip, a solar cell and a solar cell module.
SUMMARY
[0006]
In view of this, the present invention provides a solar cell strip, a solar cell and a solar cell module, in order to reduce the resistance loss and emitter resistance of front metallization pattern.
In view of this, the present invention provides a solar cell strip, a solar cell and a solar cell module, in order to reduce the resistance loss and emitter resistance of front metallization pattern.
[0007]
According to an aspect of the present invention, the present invention relates to a solar cell strip. The solar cell strip includes a front busbar positioned adjacent to one side edge of a front surface of the solar cell strip; and at least two finger regions arranged side by side at one side of the front busbar along a first direction which is perpendicular to the front Date Recue/Date Received 2021-03-25 busbar. Each patterned region is provided with a plurality of finger electrodes electrically connecting with the front busbar. The density of the finger electrodes in said at least two patterned regions is gradually decreased in the first direction.
According to an aspect of the present invention, the present invention relates to a solar cell strip. The solar cell strip includes a front busbar positioned adjacent to one side edge of a front surface of the solar cell strip; and at least two finger regions arranged side by side at one side of the front busbar along a first direction which is perpendicular to the front Date Recue/Date Received 2021-03-25 busbar. Each patterned region is provided with a plurality of finger electrodes electrically connecting with the front busbar. The density of the finger electrodes in said at least two patterned regions is gradually decreased in the first direction.
[0008] According to another aspect of the present invention, the present invention relates to a solar cell. The solar cell includes a plurality of elongated cell units which are sequentially arranged in a direction. The elongated cell units are designed as said solar cell strip.
[0009] According to another aspect of the present invention, the present invention relates to a solar cell module. The solar cell module includes a plurality of solar cell strings arranged in physically parallel rows. Each solar cell string includes a plurality of said solar cell strips.
The solar cell strips are connected by overlapping edges of adjacent solar cell strips.
BRIEF DESCRIPTION OF THE DRAWINGS
The solar cell strips are connected by overlapping edges of adjacent solar cell strips.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the described embodiments. In the drawings, reference numerals designate corresponding parts throughout various views, and all the views are schematic.
[0011] FIG. 1 is a schematic view of a front surface of a traditional solar cell;
[0012] FIG. 2 is a schematic view of a front surface of a solar cell according to a first preferred embodiment of the present invention;
[0013] FIG. 3 is an enlarged view of the circled portion shown in FIG.
2;
2;
[0014] FIG. 4 is a schematic view of a front surface of a partial solar cell according to another preferred embodiment of the present invention;
[0015] FIG. 5 is a schematic view of a front surface of a solar cell according to a second embodiment of the present invention;
[0016] FIG. 6 is an enlarged view of the circled portion shown in FIG.
5;
5;
[0017] FIG. 7 is a schematic view of a front surface of a solar cell according to a third embodiment of the present invention;
[0018] FIG. 8 is an enlarged view of the circled portion shown in FIG.
7;
7;
[0019] FIG. 9 is a schematic view of a part of a solar cell string of a solar cell module according to a preferred embodiment of the present invention; and
[0020] FIG. 10 is an enlarged view of the circled portion shown in FIG.
9.
Date Recue/Date Received 2021-03-25 DETAILED DESCRIPTION
9.
Date Recue/Date Received 2021-03-25 DETAILED DESCRIPTION
[0021] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. However, these embodiments do not limit the present application. Modifications to the structure, method or function based on these embodiments and made by those skilled in the art are all also included in the protection scope of the present application.
[0022] In the various figures of the present application, some dimensions of a structure or portion may be exaggerated relative to other structures or portions for ease of illustration, and thus, are merely used to illustrate the basic structure of the subject matter of the present application.
[0023] Referring to Figs. 2-8, the present invention provides some preferred embodiments of solar cell 100. The solar cell 100 is a standard square wafer and comprises a plurality of elongated cell units which are sequentially arranged in a direction and a plurality of gaps between adjacent elongated cell units. The elongated cell units can be diced along the gaps to form a plurality of solar cell strips 1, so that, there is no electrodes breakage in any solar cell strip 1. Thereby the present invention further provides a solar cell strip 1.
[0024] Usually, the elongated cell units on a solar cell 100 are identical in shape, metallization pattern design and the like, such that the solar cell strips 1 diced from there are similar, and a solar cell module formed by the solar cell strips 1 will be neat and attractive in appearance. Certainly, the elongated cell units also can be designed differently in shape, metallization pattern design and the like to meet different requirements.
Besides, the number of the solar cell strips 1 diced from a same solar cell 100 is determined by the area of the solar cell 100, as well as the shape and the area of the solar cell strip 1.
Besides, the number of the solar cell strips 1 diced from a same solar cell 100 is determined by the area of the solar cell 100, as well as the shape and the area of the solar cell strip 1.
[0025] Refer to Figs 2 and 3, in the preferred embodiment of the present invention, each solar cell 100 includes identical six elongated cell units each of which having a front metallization pattern on a front surface thereof and a rear metallization pattern on a rear surface thereof. Then the solar cell 100 can be diced to six identical solar cell strips 1 for facilitating the follow-up manufacturing process of a shingled solar cell module. The metallization patterns designed on the elongated cell units and the solar cell strips 1 are same, and the metallization patterns on the solar cell strips 1 will be chosen to be detail described in following.
[0026] The front metallization pattern formed on each solar cell strip 1 comprises a front busbar 11 and a plurality of finger electrodes 121 electrically connected with the front busbar 11. The rear metallization pattern formed on each solar cell strip 1 comprises a rear busbar.
Date Recue/Date Received 2021-03-25 The front busbar 11 and the rear busbar are disposed at two opposite edges of the solar cell strip 1 respectively, such that the solar cell strip 1 can be connected in series with other solar cell strips 1 in a shingled manner.
Date Recue/Date Received 2021-03-25 The front busbar 11 and the rear busbar are disposed at two opposite edges of the solar cell strip 1 respectively, such that the solar cell strip 1 can be connected in series with other solar cell strips 1 in a shingled manner.
[0027]
The present invention aims to improve the efficiency of the solar cell strip 1 or the solar cell module by improving the design of the finger electrodes 121 on the front surface.
The design of the rear metallization pattern on the rear surface adopts the prior art, which will not be repeated herein.
The present invention aims to improve the efficiency of the solar cell strip 1 or the solar cell module by improving the design of the finger electrodes 121 on the front surface.
The design of the rear metallization pattern on the rear surface adopts the prior art, which will not be repeated herein.
[0028]
The front busbar 11 is positioned adjacent to one side edge of the front surface of the solar cell strip 1. In the present invention, the front busbar 11 extends parallel to the long side edge of the solar cell strip 1, and the finger electrodes 121 are disposed at one side of the front busbar 11, thereby the finger electrodes 121 will have a shorter transmission path, which can improve transmission efficiency.
The front busbar 11 is positioned adjacent to one side edge of the front surface of the solar cell strip 1. In the present invention, the front busbar 11 extends parallel to the long side edge of the solar cell strip 1, and the finger electrodes 121 are disposed at one side of the front busbar 11, thereby the finger electrodes 121 will have a shorter transmission path, which can improve transmission efficiency.
[0029]
Refer to Figs. 2 and 3, each solar cell strip 1 can be formed with at least two patterned regions 12 that are sequentially arranged side by side at one side of the front busbar 11 along a first direction which is perpendicular to the front busbar 11. The finger electrodes 121 are distributed in the patterned regions 12. In the present invention, the density of finger electrodes 121 in said at least two patterned regions 12 is gradually decreased in the first direction.
Refer to Figs. 2 and 3, each solar cell strip 1 can be formed with at least two patterned regions 12 that are sequentially arranged side by side at one side of the front busbar 11 along a first direction which is perpendicular to the front busbar 11. The finger electrodes 121 are distributed in the patterned regions 12. In the present invention, the density of finger electrodes 121 in said at least two patterned regions 12 is gradually decreased in the first direction.
[0030]
In detail, the finger electrodes 121 in a same patterned region are parallel to each other. Said at least two patterned regions 12 include a first patterned region 123 and a second patterned region 124 away from the busbar 11 than the first patterned region 123. The distance between adjacent finger electrodes 121 in the second patterned region 124 is larger than that in the first patterned region 123. Simply, the farther the patterned region 12 is from the front busbar lithe smaller the density of finger electrodes 121 in the patterned regions 12 is. The decrease of the density can be an equal difference decrease or any difference decrease.
In detail, the finger electrodes 121 in a same patterned region are parallel to each other. Said at least two patterned regions 12 include a first patterned region 123 and a second patterned region 124 away from the busbar 11 than the first patterned region 123. The distance between adjacent finger electrodes 121 in the second patterned region 124 is larger than that in the first patterned region 123. Simply, the farther the patterned region 12 is from the front busbar lithe smaller the density of finger electrodes 121 in the patterned regions 12 is. The decrease of the density can be an equal difference decrease or any difference decrease.
[0031]
Compared with a traditional comb-shaped metallization patterns, the finger electrodes disposed on the solar cell strip 1 of the present invention are divided into segments, which make the finger electrodes 121 be shorten, thus the resistance loss of the finger electrodes 121 is decreased. Besides, the above setting of the density can further reduce the resistance of the front metallization pattern and the resistance of the emitter, and improve the conversion efficiency of the solar cell module, which all based on the premise of increasing neither the difficulty of the manufacturing process of the solar cell strip nor the light-shielding area of the metallization patterns.
Compared with a traditional comb-shaped metallization patterns, the finger electrodes disposed on the solar cell strip 1 of the present invention are divided into segments, which make the finger electrodes 121 be shorten, thus the resistance loss of the finger electrodes 121 is decreased. Besides, the above setting of the density can further reduce the resistance of the front metallization pattern and the resistance of the emitter, and improve the conversion efficiency of the solar cell module, which all based on the premise of increasing neither the difficulty of the manufacturing process of the solar cell strip nor the light-shielding area of the metallization patterns.
[0032]
Further, the finger electrodes 121 in different patterned regions have a same shape Date Recue/Date Received 2021-03-25 or different shapes. Please refer to Figs. 2 to 8, in the preferred embodiment of the present invention, the finger electrodes 121 in all patterned regions are parallel to the short side edge of the solar cell strip 1 and perpendicularly connected with the front busbar 11, which make the finger electrodes 121 be shortest.
Further, the finger electrodes 121 in different patterned regions have a same shape Date Recue/Date Received 2021-03-25 or different shapes. Please refer to Figs. 2 to 8, in the preferred embodiment of the present invention, the finger electrodes 121 in all patterned regions are parallel to the short side edge of the solar cell strip 1 and perpendicularly connected with the front busbar 11, which make the finger electrodes 121 be shortest.
[0033] Besides, the length of the finger electrodes 121 in different patterned regions can be same or different. When the length of the finger electrodes 121 in different patterned regions is different, the length of the finger electrodes 121 in the patterned region close to the front busbar 11 should be shorter than that of the finger electrodes 121 in the patterned region far from the front busbar 11, which can meet the demand of that the finger electrodes 121 close to the front busbar 11 bear relatively larger charge transport.
[0034]
For example, in the first embodiments as shown in Figs. 2 to 4, the finger electrodes 121 in the first and second patterned regions 123,124 have a same length. In a second embodiment as shown in Figs. 5 and 6, the length of the finger electrodes 121 in the first patterned region 123 is shorter than that of the finger electrodes 121 in the second patterned region 124. In a third embodiment as shown in Figs. 7 and 8, said at least two patterned regions further include a third patterned region 125 away from the front busbar 11 than the second patterned region 124, and the length of the finger electrodes 121 in the first patterned region 123 is shorter than that of the finger electrodes 121 in the third patterned region 125. The length of the finger electrodes 121 in the second patterned region 124 is same as that of the finger electrodes 121 in the first or the third patterned region 125.
For example, in the first embodiments as shown in Figs. 2 to 4, the finger electrodes 121 in the first and second patterned regions 123,124 have a same length. In a second embodiment as shown in Figs. 5 and 6, the length of the finger electrodes 121 in the first patterned region 123 is shorter than that of the finger electrodes 121 in the second patterned region 124. In a third embodiment as shown in Figs. 7 and 8, said at least two patterned regions further include a third patterned region 125 away from the front busbar 11 than the second patterned region 124, and the length of the finger electrodes 121 in the first patterned region 123 is shorter than that of the finger electrodes 121 in the third patterned region 125. The length of the finger electrodes 121 in the second patterned region 124 is same as that of the finger electrodes 121 in the first or the third patterned region 125.
[0035]
In addition, in the present invention, as shown in Figs. 2 to 8, there are a plurality of first connecting lines 13 disposed on the front surface to connect the finger electrodes 121 of two adjacent patterned regions. Then the finger electrodes 121 in the patterned regions 12 far from the front busbar 11 are communicated with the front busbar 11 through the finger electrodes 121 in the patterned regions 12 closer to the front busbar 11 and the first connecting lines 13.
In addition, in the present invention, as shown in Figs. 2 to 8, there are a plurality of first connecting lines 13 disposed on the front surface to connect the finger electrodes 121 of two adjacent patterned regions. Then the finger electrodes 121 in the patterned regions 12 far from the front busbar 11 are communicated with the front busbar 11 through the finger electrodes 121 in the patterned regions 12 closer to the front busbar 11 and the first connecting lines 13.
[0036]
Preferably, the first connecting lines 13 are disposed at the junction of two adjacent patterned regions.
Preferably, the first connecting lines 13 are disposed at the junction of two adjacent patterned regions.
[0037]
Refer to Figs. 2 to 8, Preferably, the first connecting lines 13 are set to be connected one by one in a direction which is perpendicular to a length direction of the finger electrode 121, which means that the first connecting lines 13 are formed as a continuous longer line to continuously connect all the finger electrodes 121 of said two adjacent patterned regions together. In an alternative embodiment, the first connecting lines 13 can be set to discontinuously connect some finger electrodes 121 of said two adjacent patterned Date Recue/Date Received 2021-03-25 regions 12 also.
Refer to Figs. 2 to 8, Preferably, the first connecting lines 13 are set to be connected one by one in a direction which is perpendicular to a length direction of the finger electrode 121, which means that the first connecting lines 13 are formed as a continuous longer line to continuously connect all the finger electrodes 121 of said two adjacent patterned regions together. In an alternative embodiment, the first connecting lines 13 can be set to discontinuously connect some finger electrodes 121 of said two adjacent patterned Date Recue/Date Received 2021-03-25 regions 12 also.
[0038]
Refer to Fig. 2, the first connecting lines 13 extend lineally and perpendicularly connect with the finger electrodes 121. In an alternative embodiment, the first connecting lines 13 also can extend in a wave manner as shown in Fig. 4, or the like.
Refer to Fig. 2, the first connecting lines 13 extend lineally and perpendicularly connect with the finger electrodes 121. In an alternative embodiment, the first connecting lines 13 also can extend in a wave manner as shown in Fig. 4, or the like.
[0039] Moreover, at least one of the patterned regions is further provided with a plurality of second connecting lines 122 perpendicularly connected with adjacent finger electrodes 121, such that the impact on the conversion efficiency of the solar cell stripl from the finger electrodes breakage caused by a manufacturing process of the metallization patterns is decreased, and power output may not be adversely affected by a potential cracking.
Preferably, the second connecting lines 122 are connected with the middle position of the finger electrodes 121.
Preferably, the second connecting lines 122 are connected with the middle position of the finger electrodes 121.
[0040]
In detail, refer to Figs.2 to 6, the second connecting lines 122 are discontinuously disposed between adjacent finger electrodes 121. In an alternative embodiment, the second connecting lines 122 can be set as the first connecting lines 13 to connect one by one along an arrangement direction of the finger electrodes 121 to form a continuous long communicating line.
In detail, refer to Figs.2 to 6, the second connecting lines 122 are discontinuously disposed between adjacent finger electrodes 121. In an alternative embodiment, the second connecting lines 122 can be set as the first connecting lines 13 to connect one by one along an arrangement direction of the finger electrodes 121 to form a continuous long communicating line.
[0041]
Besides, such as shown in Figs. 2-4, the second connecting lines 122 can be set in all the patterned regions. The second connecting lines 122 also can be alternatively set in the patterned region with longer finger electrodes 121, such as shown in Figs. 5 and 6.
Besides, such as shown in Figs. 2-4, the second connecting lines 122 can be set in all the patterned regions. The second connecting lines 122 also can be alternatively set in the patterned region with longer finger electrodes 121, such as shown in Figs. 5 and 6.
[0042] Of course, refer to Fig. 7 and 8, in another alternatively embodiment, there are only disposed with the first connecting lines 13, without any second connecting lines 122.
[0043]
Preferably, the diameter of the first connecting lines 13 is wider than that of the finger electrodes 121 to form an effective charge transport path for transmitting more charges.
Preferably, the diameter of the first connecting lines 13 is wider than that of the finger electrodes 121 to form an effective charge transport path for transmitting more charges.
[0044] Moreover, the present invention further provides a solar cell module 200. The solar cell module 200 comprises a plurality of solar cell strings 1 arranged in physically parallel rows.
[0045]
Such as shown in Fig. 9 and 10, the solar cell module 200 is provided with a plurality of solar cell strips 1 as mentioned above. The solar cell strips 1 are connected by overlapping edges of adjacent solar cell strips with conductive adhesive.
Such as shown in Fig. 9 and 10, the solar cell module 200 is provided with a plurality of solar cell strips 1 as mentioned above. The solar cell strips 1 are connected by overlapping edges of adjacent solar cell strips with conductive adhesive.
[0046]
In summary, compared with a traditional comb-shaped metallization patterns, the sectioned patterned regions in the present invention make the finger electrodes be shortened, then the resistance loss of the finger electrodes 121 is decreased. Besides, the above setting of the density of the finger electrodes 121 in different patterned regions can further reduce the Date Recue/Date Received 2021-03-25 resistance of the front metallization pattern and the resistance of the emitter, and improve the conversion efficiency of the solar cell module, which all based on the premise of increasing neither the difficulty of the manufacturing process of the solar cell strip nor the light-shielding area of the metallization patterns. Thus, the conversion efficiency of the solar cell module is increased.
In summary, compared with a traditional comb-shaped metallization patterns, the sectioned patterned regions in the present invention make the finger electrodes be shortened, then the resistance loss of the finger electrodes 121 is decreased. Besides, the above setting of the density of the finger electrodes 121 in different patterned regions can further reduce the Date Recue/Date Received 2021-03-25 resistance of the front metallization pattern and the resistance of the emitter, and improve the conversion efficiency of the solar cell module, which all based on the premise of increasing neither the difficulty of the manufacturing process of the solar cell strip nor the light-shielding area of the metallization patterns. Thus, the conversion efficiency of the solar cell module is increased.
[0047] It should be understood that although the description is described according to the above embodiments, each embodiment may not only include one independent technical solution. The presentation manner of the description is only for the sake of clarity. Those skilled in the art should take the description as an integral part. The technical solutions of the respective embodiments may be combined properly to form other embodiments understandable by those skilled in the art.
[0048] The above detailed description only illustrates the feasible embodiments of the present application, and is not intended to limit the protection scope of the present application. Equivalent embodiments or modifications within the scope and spirit of the present application shall be embraced by the protection scope of the present application.
Date Recue/Date Received 2021-03-25
Date Recue/Date Received 2021-03-25
Claims (15)
1. A solar cell strip comprising:
a front busbar positioned adjacent to one side edge of a front surface of the solar cell strip; and at least two patterned regions arranged side by side at one side of the front busbar along a first direction which is perpendicular to the front busbar, each patterned region being provided with a plurality of finger electrodes electrically connecting with the front busbar;
wherein the density of the finger electrodes in said at least two patterned regions is gradually decreased in the first direction.
a front busbar positioned adjacent to one side edge of a front surface of the solar cell strip; and at least two patterned regions arranged side by side at one side of the front busbar along a first direction which is perpendicular to the front busbar, each patterned region being provided with a plurality of finger electrodes electrically connecting with the front busbar;
wherein the density of the finger electrodes in said at least two patterned regions is gradually decreased in the first direction.
2. The solar cell strip as claimed in claim 1, wherein said at least two patterned regions include a first patterned region and a second patterned region which is farther away from the front busbar than the first patterned region; the finger electrodes in each patterned region are parallel to each other, and the distance between adjacent finger electrode in the second patterned region is larger than that in the first patterned region.
3. The solar cell strip as claimed in claim 2, wherein the finger electrodes in all patterned regions extend along the first direction, and perpendicularly connect with the front busbar.
4. The solar cell strip as claimed in claim 3, wherein the front busbar extends parallel to a long side edge of the solar cell strip, and the finger electrodes extend parallel to a short side edge of the solar cell strip.
5. The solar cell strip as claimed in claim 3, wherein the finger electrode has a length in the first patterned region is shorter than that of the finger electrode in the second patterned region.
6. The solar cell strip as claimed in claim 3, wherein the finger electrodes in the first and second patterned regions have a same length.
7. The solar cell strip as claimed in claim 6, wherein said solar cell strip further includes a third patterned region which is farther away from the front busbar than the second patterned region, the length of the finger electrode in the first patterned region is shorter than that of the finger electrode in the third patterned region, and the length of the finger electrode in the second patterned region is the same as that of the finger electrode in the first or the third patterned region.
8. The solar cell strip as claimed in claim 1, wherein a plurality of first connecting lines are disposed to connect the finger electrodes of two adjacent patterned regions.
9. The solar cell strip as claimed in claim 8, wherein the first connecting lines are disposed at the junction of two adjacent patterned regions.
10. the solar cell strip as claimed in claim 9, wherein the first connecting lines are connected one by one in a direction which is perpendicular to a length direction of the finger electrode.
11. The solar cell strip as claimed in any one of the claims 8 to 10, wherein the first connecting lines extend lineally or in a wave manner.
12. The solar cell strip as claimed in any one of the claims 1, 8 to 11, wherein at least one of the patterned regions is further provided with a plurality of second connecting lines perpendicularly connected between adjacent finger electrodes.
13. A solar cell comprising:
a plurality of elongated cell units which are sequentially arranged in a direction ;
wherein each elongated cell unit is provided with a front busbar positioned adjacent to one side edge of a front surface thereof and at least two patterned regions arranged side by side at one side of the front busbar along a first direction which is perpendicular to the front busbar, each patterned region being provided with a plurality of finger electrodes electrically connecting with the front busbar;
wherein the density of the finger electrodes in said at least two patterned regions is gradually decreased in the first direction.
a plurality of elongated cell units which are sequentially arranged in a direction ;
wherein each elongated cell unit is provided with a front busbar positioned adjacent to one side edge of a front surface thereof and at least two patterned regions arranged side by side at one side of the front busbar along a first direction which is perpendicular to the front busbar, each patterned region being provided with a plurality of finger electrodes electrically connecting with the front busbar;
wherein the density of the finger electrodes in said at least two patterned regions is gradually decreased in the first direction.
14. The solar cell as claimed in claim 13, wherein the solar cell further comprising a plurality of gaps between each two adjacent elongated cell units.
15. A solar cell module comprising:
a plurality of solar cell strings arranged in physically parallel rows, each solar cell string including a plurality of solar cell strips as claimed in any one of the claims 1 to 12, the solar cell strips being connected by overlapping edges of adjacent solar cell strips with conductive adhesive.
a plurality of solar cell strings arranged in physically parallel rows, each solar cell string including a plurality of solar cell strips as claimed in any one of the claims 1 to 12, the solar cell strips being connected by overlapping edges of adjacent solar cell strips with conductive adhesive.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811109217.0 | 2018-09-21 | ||
| CN201811109217.0A CN110957386A (en) | 2018-09-21 | 2018-09-21 | Strip-shaped cell piece, solar cell piece and photovoltaic module |
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| Publication Number | Publication Date |
|---|---|
| CA3056207A1 CA3056207A1 (en) | 2020-03-21 |
| CA3056207C true CA3056207C (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3056207A Active CA3056207C (en) | 2018-09-21 | 2019-09-20 | Solar cell strip, solar cell and solar cell module |
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| Country | Link |
|---|---|
| CN (1) | CN110957386A (en) |
| CA (1) | CA3056207C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594273B (en) * | 2021-08-27 | 2023-08-15 | 浙江晶科能源有限公司 | Battery piece and photovoltaic module |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10270735A (en) * | 1997-03-28 | 1998-10-09 | Sharp Corp | Solar cell and its production |
| JP5820278B2 (en) * | 2012-01-10 | 2015-11-24 | シャープ株式会社 | Solar cell and method for manufacturing solar cell |
| CN202678325U (en) * | 2012-06-06 | 2013-01-16 | 比亚迪股份有限公司 | Solar cell sheet |
| CN205376542U (en) * | 2015-12-29 | 2016-07-06 | 内蒙古日月太阳能科技有限责任公司 | Crystalline silicon solar battery |
| EP3480860B1 (en) * | 2016-06-30 | 2020-11-11 | BYD Company Limited | Photovoltaic cell assembly |
| CN106876503B (en) * | 2017-03-30 | 2018-04-24 | 隆基乐叶光伏科技有限公司 | Using the solar energy stacked wafer moudle of center convergence gate line electrode |
| CN208970537U (en) * | 2018-09-21 | 2019-06-11 | 苏州阿特斯阳光电力科技有限公司 | Battery strip piece, solar battery sheet and photovoltaic module |
-
2018
- 2018-09-21 CN CN201811109217.0A patent/CN110957386A/en active Pending
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| CN110957386A (en) | 2020-04-03 |
| CA3056207A1 (en) | 2020-03-21 |
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