CA3044596A1 - Solar cell and solar cell module - Google Patents
Solar cell and solar cell module Download PDFInfo
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- CA3044596A1 CA3044596A1 CA3044596A CA3044596A CA3044596A1 CA 3044596 A1 CA3044596 A1 CA 3044596A1 CA 3044596 A CA3044596 A CA 3044596A CA 3044596 A CA3044596 A CA 3044596A CA 3044596 A1 CA3044596 A1 CA 3044596A1
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- solar cell
- metallization pattern
- edge electrode
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- 238000001465 metallisation Methods 0.000 claims abstract description 60
- 239000000853 adhesive Substances 0.000 claims abstract description 24
- 230000001070 adhesive effect Effects 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000004065 semiconductor Substances 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- 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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- Photovoltaic Devices (AREA)
Abstract
The present invention provides a solar cell and a solar cell module. The solar cell includes a rectangular semiconductor substrate having a front surface and a rear surface opposite to the front surface, and a front metallization pattern formed on the front surface and a rear metallization pattern formed on the rear surface, wherein the front metallization pattern and the rear metallization pattern comprise two elongated edge electrodes which are located at two opposite edges of the semiconductor substrate. At least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material. The elongated edge electrodes have been optimally designed, so that the bonding strength of adjacent solar cells is higher, and the electrical connection is more reliable.
Description
SOLAR CELL AND SOLAR CELL MODULE
TECHNICAL FIELD
[0001] The present invention relates to afield of photovoltaic(PV) technology, and in particular to a solar cell and a solar cell module.
BACKGROUND
TECHNICAL FIELD
[0001] The present invention relates to afield of photovoltaic(PV) technology, and in particular to a solar cell and a solar cell module.
BACKGROUND
[0002] The adjacent solar cells in a shingled module are partially overlapped with each other and bonded by a special conductive adhesive. Compared with a 113 traditional PV module, the shingled module can make full use of light-receiving areas of the solar cells. The shingled module which has a same dimension with the traditional PV module can hold more solar cells and does not use solder strips to connect adjacent solar cells. Thus, the shingled module has high efficiency and low loss.
[0003] During the manufacturing process of a conventional shingled module, a front edge electrode of a solar cell and a rear edge electrode of an adjacent solar cell are bonded and electrically connected through a conductive adhesive. However, the above connection method requires high bonding strength and electrical conductivity between the bus bars and the conductive adhesive. As a result, the raw material cost of the shingled module is kept high correspondingly. Thus, not only the composition of the conductive adhesive is required to be adjusted and improved in the industry, but also the bus bars of the solar cells need to be optimally designed to reduce the production cost and improve the performance of the shingled module.
SUMMARY
SUMMARY
[0004] In view of this, the present invention provides a solar cell and a solar cell module, in order to enhance the bonding strength of adjacent solar cells, reduce the internal loss and improve the power generation efficiency.
[0005] According to an aspect of the present invention, a solar cell includes a plurality of rectangular unit regions, each of which having a front metallization pattern on a front surface of the unit region and a rear metallization pattern on a rear surface of the unit region, wherein each of the front metallization pattern and rear , metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of each unit region, respectively. At least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material.
[0006] According to another aspect of the present invention, a solar cell includes a rectangular semiconductor substrate having a front surface and a rear surface opposite to the front surface, and a front metallization pattern formed on the front surface and a rear metallization pattern formed on the rear surface, wherein each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of the semiconductor substrate, respectively. At least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material.
[0007] The present invention further provides a solar cell module, which includes a plurality of solar cell strings arranged in two or more parallel rows. Each solar cell string having a plurality of rectangular solar cells arranged in line with adjacent solar cells partially overlapped and conductively bonded to each other by .. adhesive material. Each solar cell has a front metallization pattern on a front surface of the solar cell and a rear metallization pattern on a rear surface of the solar cell.
Each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of the solar cell, respectively. At least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed there between for receiving adhesive material BRIEF DESCRIPTION OF THE DRAWINGS
Each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of the solar cell, respectively. At least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed there between for receiving adhesive material BRIEF DESCRIPTION OF THE DRAWINGS
[0008] 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.
[0009] FIG. 1 is a schematic view of a front side of a solar cell according to the present invention;
[0010] FIG. 2 is a schematic view of a rear side of the solar cell shown in FIG.
1;
1;
[0011] FIG. 3 is an enlarged schematic view of the region A shown in FIG.
1;
1;
[0012] FIG. 4 is a schematic view of a front side of a solar cell according to another embodiment of the present invention;
100131 FIG. 5 is a schematic view of a rear side of the solar cell shown in FIG.
4;
[0014] FIG. 6 is an enlarged schematic view of the region B shown in FIG.
4.
DETAILED DESCRIPTION
[0015] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations set forth in the following exemplary embodiments do not represent all implementations consistent with the present invention. Rather, they are merely examples of devices and methods consistent with certain aspects of the present invention as detailed in the appended claims.
[0016] Please refer to Figs. 1-3, the present invention provides a solar cell 100 which includes a plurality of rectangular unit regions 10. The unit regions 10 are sequentially arranged adjacent to one another, and each of which having a front metallization pattern on a front surface of the unit region 10 and a rear metallization pattern on a rear surface of the unit region 10. Here, there are 2-8 unit regions 10 in the solar cell 100, and each unit region 10 has two edges which are opposite and extend in a first direction.
[0017] Each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode at the two opposite edges of each unit region 10. That is, the edge electrode extends in the first direction. At least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material, wherein the width of the unpatterned region is greater than the width of the bus bar.
[0018] Specifically, the front metallization pattern comprises an front edge electrode 1 at one edge of each unit region 10, and the rear metallization pattern comprises an rear edge electrode 3 at the opposite edge of each unit region 10.
Wherein all the front edge electrodes 1 of the plurality of unit regions 10 are parallel located and equally spaced. During actual production, the unit regions 10 are separated and overlapped one by one through a conductive adhesive, then a solar cell string is obtained for preparing a solar cell module. Wherein the conductive adhesive is in contact with the front and rear edge electrodes 1, 3.
[0019] In this embodiment, the front edge electrode 1 includes a first front bus .. bar 11 and a second front bus bar 12 disposed close to each other, and a first unpatterned region 13 between the first and second front bus bars 11, 12. The first and second front bus bars 11, 12 extend from one end to another end of the front metallization pattern, and the first unpatterned region 13 is used for filling the conductive adhesive.
[0020] The rear edge electrode 3 includes a first rear bus bar 31 and a second rear bus bar 32 disposed close to each other, and a second unpatterned region between the first and second rear bus bars 31, 32. The first and second rear bus bars 31, 32 extend from one end to another end of the rear metallization pattern, and the second unpatterned region 33 is used for filling the conductive adhesive, too.
[0021] Thereby, when the adjacent unit regions 10 are partially overlapped with each other, the first and second unpatterned regions 13, 33 can increase the contact area between the conductive adhesive and the edge electrode 1, 3, then the bonding strength and the electrical connectivity of the front edge electrode 1 to the rear edge electrode 3 are improved.
[0022] Besides, the front metallization pattern is provided with a plurality of finger electrodes 2 perpendicularly connecting with the front edge electrode 1. The finger electrodes 2 are configured to collect the surface current of the unit region 10, and include a plurality of first finger electrodes 21 and a plurality of second finger electrodes 22. The first finger electrodes 21 extend in a second direction perpendicular to the first direction and are parallel to each other. The first finger electrodes 21 are connected to the front edge electrode 1 at the same ends.
The second finger electrodes 22 are connected between adjacent first finger electrodes 21 so as to collect the current more effectively. The second finger electrodes 22 are parallel to the front edge electrode 1, and adjacent second finger electrodes 22 in the first direction are staggered with each other.
100231 In order to improve the electrical connection between the first front bus bar 11 and the second front bus bar 12 and guarantee stable and uniform current conduction, the finger electrodes 2 further include a plurality of interconnecting finger electrodes 14 which extend through the first and second front bus bars 11, 12.
The interconnecting finger electrodes 14 are located in the first unpatterned region 13, and connect the first front bus bar 11 and the second front bus bar 12 in the second direction. Wherein the height of the interconnecting finger electrodes 14 are smaller than those of the first front bus bar 11 and the second front bus bar 12, and the interconnecting finger electrodes 14 are disposed corresponding to the first finger electrodes 21.
100241 The first unpatterned region 13 and the second unpatterned region 33 have a same shape and correspond to each other in position. During overlapping of the unit regions 10, the first unpatterned region 13 and the second unpatterned region 33 form an accommodating cavity for accommodating the conductive adhesive, such that the bonding strength and the electrical connectivity between the front edge electrode 1 and the rear edge electrode 3 are improved effectively.
100251 In the present embodiment, the first unpatterned region 13 and the second unpatterned region 33 extend linearly in the first direction. Besides, the first unpatterned region 13 and the second unpatterned region 33 can be closed at two ends thereof, that is the first front bus bar 11 and the second front bus bar 12 being connected to each other at two ends thereof, and the first rear bus bar 31 and the second rear bus bar 32 being connected to each other at two ends thereof.
100261 Referring to Figs. 4-6, in another embodiment of the present invention, a solar cell 100' includes a plurality of unit regions 10'. Each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode at the two opposite edges of each unit region 10'. A portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material, and another portion of the edge electrode comprises only one bus bar which connects with the two paralleled bus bars.
Wherein the portions of the edge electrode with only one bus bar have a length which is shorter than the portions of the edge electrode with two paralleled bus bars.
[0027] The front metallization pattern comprises an front edge electrode 1' and a plurality of finger electrodes 2' connected to the front edge electrode 1', and the rear metallization pattern comprises an rear edge electrode 3'.
[0028] A portion of the front edge electrode 1' comprises one first front bus bar 11', one second front bus bar 12', and one first unpatterned region 13' between the first and second front bus bars 11', 12'. Another portion of the front edge electrode l' comprises a third front bus bar 15' connected with the two paralleled bus bars 11', 12'.
[0029] Wherein the width of the unpatterned region is 13' greater than the width of the first and second front bus bars 11', 12'. Preferably, the third front bus bar 15' has a width a, the first front bus bar 11' has a width b, the second front bus bar 12' has a width c, and the first unpatterned region 13' has a width d, wherein said a<b+c+d. Here, the first unpatterned region 13' is preferably closed at two ends thereof. The width of the third front bus bar 15' is equivalent to those of the first front bus bar 11' and the second front bus bar 12'.
[0030] Similarly, a portion of the rear edge electrode 3' comprises one first rear bus bar 31', one second rear bus bar 32', and one second unpatterned region 33' between the first and second rear bus bars 31', 32'. The first and second unpatterned regions 13' ,33' are arranged into several rows which are perpendicular to the first direction, and the first unpatterned regions 13' on the front surface of a unit region 10' are arranged corresponding to the second unpatterned regions 33' on the rear surface of another unit region 10'.
[0031] The finger electrodes 2' include a plurality of first finger electrodes 21' and a plurality of second finger electrodes 22'. The first finger electrodes 21' and the second finger electrodes 22' are similar to that in the first embodiment and will not be detailly described.
[0032] The finger electrodes 2' further include a plurality of interconnecting finger electrodes 14' connecting the first front bus bar 11' and the second front bus bar 12' in the second direction, and the interconnecting finger electrodes 14' are disposed corresponding to the first finger electrodes 21.
[0033] The present invention further provides a solar cell module (not shown), includes a plurality of solar cell strings arranged in two or more parallel rows. Each solar cell string having a plurality of rectangular solar cells arranged in line with adjacent solar cells partially overlapped and conductively bonded to each other by adhesive material. Specially, solar cell string comprises a plurality of unit regions 10, 10'. The plurality of unit regions 10, 10' sequentially overlap end to end in a second direction, and bonded to each other by a conductive adhesive.
[0034] In summary, The front edge electrode 1, 1' and the rear edge electrode 3, 3' have been optimally designed. Thus, the consumption of paste used to prepare the edge electrodes is reduced and the demand on the performance of the conductive adhesive required is lowered, meanwhile, the bonding strength of adjacent unit regions 10, 10' is higher, and the electrical connection is more reliable.
[0035] 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 field.
[0036] The above detailed description only illustrates the feasible embodiments of the present invention, and is not intended to limit the protection scope of the present invention. Equivalent embodiments or modifications within the scope and spirit of the present invention shall be embraced by the protection scope of the present invention.
100131 FIG. 5 is a schematic view of a rear side of the solar cell shown in FIG.
4;
[0014] FIG. 6 is an enlarged schematic view of the region B shown in FIG.
4.
DETAILED DESCRIPTION
[0015] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations set forth in the following exemplary embodiments do not represent all implementations consistent with the present invention. Rather, they are merely examples of devices and methods consistent with certain aspects of the present invention as detailed in the appended claims.
[0016] Please refer to Figs. 1-3, the present invention provides a solar cell 100 which includes a plurality of rectangular unit regions 10. The unit regions 10 are sequentially arranged adjacent to one another, and each of which having a front metallization pattern on a front surface of the unit region 10 and a rear metallization pattern on a rear surface of the unit region 10. Here, there are 2-8 unit regions 10 in the solar cell 100, and each unit region 10 has two edges which are opposite and extend in a first direction.
[0017] Each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode at the two opposite edges of each unit region 10. That is, the edge electrode extends in the first direction. At least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material, wherein the width of the unpatterned region is greater than the width of the bus bar.
[0018] Specifically, the front metallization pattern comprises an front edge electrode 1 at one edge of each unit region 10, and the rear metallization pattern comprises an rear edge electrode 3 at the opposite edge of each unit region 10.
Wherein all the front edge electrodes 1 of the plurality of unit regions 10 are parallel located and equally spaced. During actual production, the unit regions 10 are separated and overlapped one by one through a conductive adhesive, then a solar cell string is obtained for preparing a solar cell module. Wherein the conductive adhesive is in contact with the front and rear edge electrodes 1, 3.
[0019] In this embodiment, the front edge electrode 1 includes a first front bus .. bar 11 and a second front bus bar 12 disposed close to each other, and a first unpatterned region 13 between the first and second front bus bars 11, 12. The first and second front bus bars 11, 12 extend from one end to another end of the front metallization pattern, and the first unpatterned region 13 is used for filling the conductive adhesive.
[0020] The rear edge electrode 3 includes a first rear bus bar 31 and a second rear bus bar 32 disposed close to each other, and a second unpatterned region between the first and second rear bus bars 31, 32. The first and second rear bus bars 31, 32 extend from one end to another end of the rear metallization pattern, and the second unpatterned region 33 is used for filling the conductive adhesive, too.
[0021] Thereby, when the adjacent unit regions 10 are partially overlapped with each other, the first and second unpatterned regions 13, 33 can increase the contact area between the conductive adhesive and the edge electrode 1, 3, then the bonding strength and the electrical connectivity of the front edge electrode 1 to the rear edge electrode 3 are improved.
[0022] Besides, the front metallization pattern is provided with a plurality of finger electrodes 2 perpendicularly connecting with the front edge electrode 1. The finger electrodes 2 are configured to collect the surface current of the unit region 10, and include a plurality of first finger electrodes 21 and a plurality of second finger electrodes 22. The first finger electrodes 21 extend in a second direction perpendicular to the first direction and are parallel to each other. The first finger electrodes 21 are connected to the front edge electrode 1 at the same ends.
The second finger electrodes 22 are connected between adjacent first finger electrodes 21 so as to collect the current more effectively. The second finger electrodes 22 are parallel to the front edge electrode 1, and adjacent second finger electrodes 22 in the first direction are staggered with each other.
100231 In order to improve the electrical connection between the first front bus bar 11 and the second front bus bar 12 and guarantee stable and uniform current conduction, the finger electrodes 2 further include a plurality of interconnecting finger electrodes 14 which extend through the first and second front bus bars 11, 12.
The interconnecting finger electrodes 14 are located in the first unpatterned region 13, and connect the first front bus bar 11 and the second front bus bar 12 in the second direction. Wherein the height of the interconnecting finger electrodes 14 are smaller than those of the first front bus bar 11 and the second front bus bar 12, and the interconnecting finger electrodes 14 are disposed corresponding to the first finger electrodes 21.
100241 The first unpatterned region 13 and the second unpatterned region 33 have a same shape and correspond to each other in position. During overlapping of the unit regions 10, the first unpatterned region 13 and the second unpatterned region 33 form an accommodating cavity for accommodating the conductive adhesive, such that the bonding strength and the electrical connectivity between the front edge electrode 1 and the rear edge electrode 3 are improved effectively.
100251 In the present embodiment, the first unpatterned region 13 and the second unpatterned region 33 extend linearly in the first direction. Besides, the first unpatterned region 13 and the second unpatterned region 33 can be closed at two ends thereof, that is the first front bus bar 11 and the second front bus bar 12 being connected to each other at two ends thereof, and the first rear bus bar 31 and the second rear bus bar 32 being connected to each other at two ends thereof.
100261 Referring to Figs. 4-6, in another embodiment of the present invention, a solar cell 100' includes a plurality of unit regions 10'. Each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode at the two opposite edges of each unit region 10'. A portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material, and another portion of the edge electrode comprises only one bus bar which connects with the two paralleled bus bars.
Wherein the portions of the edge electrode with only one bus bar have a length which is shorter than the portions of the edge electrode with two paralleled bus bars.
[0027] The front metallization pattern comprises an front edge electrode 1' and a plurality of finger electrodes 2' connected to the front edge electrode 1', and the rear metallization pattern comprises an rear edge electrode 3'.
[0028] A portion of the front edge electrode 1' comprises one first front bus bar 11', one second front bus bar 12', and one first unpatterned region 13' between the first and second front bus bars 11', 12'. Another portion of the front edge electrode l' comprises a third front bus bar 15' connected with the two paralleled bus bars 11', 12'.
[0029] Wherein the width of the unpatterned region is 13' greater than the width of the first and second front bus bars 11', 12'. Preferably, the third front bus bar 15' has a width a, the first front bus bar 11' has a width b, the second front bus bar 12' has a width c, and the first unpatterned region 13' has a width d, wherein said a<b+c+d. Here, the first unpatterned region 13' is preferably closed at two ends thereof. The width of the third front bus bar 15' is equivalent to those of the first front bus bar 11' and the second front bus bar 12'.
[0030] Similarly, a portion of the rear edge electrode 3' comprises one first rear bus bar 31', one second rear bus bar 32', and one second unpatterned region 33' between the first and second rear bus bars 31', 32'. The first and second unpatterned regions 13' ,33' are arranged into several rows which are perpendicular to the first direction, and the first unpatterned regions 13' on the front surface of a unit region 10' are arranged corresponding to the second unpatterned regions 33' on the rear surface of another unit region 10'.
[0031] The finger electrodes 2' include a plurality of first finger electrodes 21' and a plurality of second finger electrodes 22'. The first finger electrodes 21' and the second finger electrodes 22' are similar to that in the first embodiment and will not be detailly described.
[0032] The finger electrodes 2' further include a plurality of interconnecting finger electrodes 14' connecting the first front bus bar 11' and the second front bus bar 12' in the second direction, and the interconnecting finger electrodes 14' are disposed corresponding to the first finger electrodes 21.
[0033] The present invention further provides a solar cell module (not shown), includes a plurality of solar cell strings arranged in two or more parallel rows. Each solar cell string having a plurality of rectangular solar cells arranged in line with adjacent solar cells partially overlapped and conductively bonded to each other by adhesive material. Specially, solar cell string comprises a plurality of unit regions 10, 10'. The plurality of unit regions 10, 10' sequentially overlap end to end in a second direction, and bonded to each other by a conductive adhesive.
[0034] In summary, The front edge electrode 1, 1' and the rear edge electrode 3, 3' have been optimally designed. Thus, the consumption of paste used to prepare the edge electrodes is reduced and the demand on the performance of the conductive adhesive required is lowered, meanwhile, the bonding strength of adjacent unit regions 10, 10' is higher, and the electrical connection is more reliable.
[0035] 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 field.
[0036] The above detailed description only illustrates the feasible embodiments of the present invention, and is not intended to limit the protection scope of the present invention. Equivalent embodiments or modifications within the scope and spirit of the present invention shall be embraced by the protection scope of the present invention.
Claims (16)
1 . A solar cell comprising:
a plurality of rectangular unit regions, each of which having a front metallization pattern on a front surface of the unit region and a rear metallization pattern on a rear surface of the unit region, wherein each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of each unit region, respectively;
wherein at least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material.
a plurality of rectangular unit regions, each of which having a front metallization pattern on a front surface of the unit region and a rear metallization pattern on a rear surface of the unit region, wherein each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of each unit region, respectively;
wherein at least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material.
2. The solar cell as claimed in claim 1, wherein at least another portion of the edge electrode comprises only one bus bar which connects with the two paralleled bus bars.
3. The solar cell as claimed in claim 1, wherein the two paralleled bus bars extend from one end to another end of the front metallization pattern or the rear metallization pattern.
4. The solar cell as claimed in claim 1, wherein the front metallization pattern comprises a plurality of finger electrodes perpendicularly connecting with the edge electrode, some of the finger electrodes extend through the two paralleled bus bars.
5. The solar cell as claimed in claim 2, wherein the width of the unpatterned region is greater than the width of the bus bar.
6. The solar cell as claimed in claim 1, wherein the unpatterned regions on the front surface or rear surface of the solar cell are arranged into several rows which are perpendicular to the length direction of the edge electrode.
7. The solar cell as claimed in claim 6, wherein the unpatterned regions on the front surface of a unit region are arranged corresponding to the unpatterned regions on the rear surface of another unit region.
8. The solar cell as claimed in claim 1, wherein all the edge electrodes of the front metallization patterns of the plurality of unit regions are parallel located and equally spaced.
9. A solar cell comprising:
A rectangular semiconductor substrate having a front surface and a rear surface opposite to the front surface;
a front metallization pattern formed on the front surface and a rear metallization pattern formed on the rear surface, wherein each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of the semiconductor substrate, respectively;
wherein at least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material.
A rectangular semiconductor substrate having a front surface and a rear surface opposite to the front surface;
a front metallization pattern formed on the front surface and a rear metallization pattern formed on the rear surface, wherein each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of the semiconductor substrate, respectively;
wherein at least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed therebetween for receiving adhesive material.
10. The solar cell as claimed in claim 9, wherein at least another portion of the edge electrode comprises only one bus bar which connects with the two paralleled bus bars.
11. The solar cell as claimed in claim 9, wherein the two paralleled bus bars extend from one end to another end of the front metallization pattern or the rear metallization pattern.
12. The solar cell as claimed in claim 9, wherein the front metallization pattern comprises a plurality of finger electrodes perpendicularly connecting with the edge electrode, some of the finger electrodes extend through the two paralleled bus bars.
13. A solar cell module comprising:
a plurality of solar cell strings arranged in two or more parallel rows, each solar cell string having a plurality of rectangular solar cells arranged in line with adjacent solar cells partially overlapped and conductively bonded to each other by adhesive material, wherein each solar cell has a front metallization pattern on a front surface of the solar cell and a rear metallization pattern on a rear surface of the solar cell, each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of the solar cell, respectively;
wherein at least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed there between for receiving adhesive material.
a plurality of solar cell strings arranged in two or more parallel rows, each solar cell string having a plurality of rectangular solar cells arranged in line with adjacent solar cells partially overlapped and conductively bonded to each other by adhesive material, wherein each solar cell has a front metallization pattern on a front surface of the solar cell and a rear metallization pattern on a rear surface of the solar cell, each of the front metallization pattern and rear metallization pattern comprises an elongated edge electrode, and the elongated edge electrode of the front metallization pattern and the elongated edge electrode of the rear metallization pattern located at two opposite edges of the solar cell, respectively;
wherein at least one portion of the edge electrode comprises two paralleled bus bars with an unpatterned region formed there between for receiving adhesive material.
14. The solar cell module as claimed in claim 13, wherein at least another portion of the edge electrode comprises only one bus bar which connects with the two paralleled bus bars.
15. The solar cell module as claimed in claim 14, wherein the unpatterned regions located on the front surface of a solar cell are overlapped by the unpatterned regions which are located on the rear surface of an adjacent solar cell.
16. The solar cell module as claimed in claim 15, wherein the portions of the edge electrode with only one bus bar have a length which is shorter than the portions of the edge electrode with two paralleled bus bars.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820816890.7U CN208240693U (en) | 2018-05-30 | 2018-05-30 | Solar battery sheet and photovoltaic module |
| CN201820816890.7 | 2018-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3044596A1 true CA3044596A1 (en) | 2019-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3044596A Pending CA3044596A1 (en) | 2018-05-30 | 2019-05-29 | Solar cell and solar cell module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN208240693U (en) |
| CA (1) | CA3044596A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180533A (en) * | 2020-01-23 | 2020-05-19 | 成都晔凡科技有限公司 | Laminated tile assembly, solar cell and manufacturing method of laminated tile assembly |
-
2018
- 2018-05-30 CN CN201820816890.7U patent/CN208240693U/en active Active
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2019
- 2019-05-29 CA CA3044596A patent/CA3044596A1/en active Pending
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| Publication number | Publication date |
|---|---|
| CN208240693U (en) | 2018-12-14 |
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