CN206976359U - Solar cell and solar cell module - Google Patents
Solar cell and solar cell module Download PDFInfo
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- CN206976359U CN206976359U CN201720711052.9U CN201720711052U CN206976359U CN 206976359 U CN206976359 U CN 206976359U CN 201720711052 U CN201720711052 U CN 201720711052U CN 206976359 U CN206976359 U CN 206976359U
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- solar cell
- back electrode
- electric field
- body electric
- electrode
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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
- Y02E10/547—Monocrystalline silicon PV cells
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Abstract
The utility model discloses a kind of solar cell and solar cell module, solar cell includes back electrode and back of the body electric field；Wherein, along the length direction of back electrode, there is the first gap between the end face of back electrode and back of the body electric field, or the end face of back electrode is concordant with carrying on the back electric field.In solar cell disclosed in the utility model, along the length direction of back electrode, have the first gap or the end face of back electrode concordant with back of the body electric field between the end face of back electrode and back of the body electric field, so, effectively reduce back electrode and carry on the back the difference in height of electric field intersection, so as to reduce welding in back electrode and the stress of back of the body electric field intersection, and then reduce solar cell module and the hidden probability split with fragment occur.
Description
Technical field
The utility model is related to technical field of solar cell manufacturing, more specifically to a kind of solar cell and
Solar cell module.
Background technology
Silicon wafer to manufacture is turned into the process of solar cell mainly to be included：Making herbs into wool, diffusion, etching, plated film, printing and burning
Knot, wherein, printing process is to make the front electrode and backplate of solar cell, so that solar cell is given birth under light illumination
Into negative ions be output to load.Back electrode printing is typically first carried out during printing, then carries out carrying on the back electric field printing, back electrode
Periphery is blocked by back of the body electric field, to avoid back electrode from coming off.As depicted in figs. 1 and 2, back electrode 13 and back of the body electric field 12 are located at silicon chip 11
On, the thickness of back electrode 13 is less than the thickness of back of the body electric field 12, and the periphery of back electrode 13 is blocked by back of the body electric field 12, then the He of back electrode 13
The difference in height of the back of the body intersection of electric field 12 is larger, and difference in height is about to carry on the back the thickness of electric field 12, and difference in height is usually 20um or so.
, it is necessary to which the series welding of welding 14 used for solar batteries is got up in solar cell module, specifically, welding 14 is electric along the back of the body
Pole 13 is set, i.e. the length direction of welding 14 is the length direction of back electrode 13.The intersection of back electrode 13 and back of the body electric field 12
Difference in height is larger, then welding 14 is larger in the stress of back electrode 13 and the intersection of back of the body electric field 12, and solar cell module is easier to
Occur it is hidden split and fragment, influence the quality of solar cell module, also cause the production cost of solar cell module larger.
In summary, how to reduce back electrode and carry on the back the difference in height of electric field intersection, gone out with reducing solar cell module
The existing hidden probability split with fragment, is current those skilled in the art's urgent problem to be solved.
Utility model content
The purpose of this utility model is to provide a kind of solar cell, reduces back electrode and carries on the back the height of electric field intersection
Difference, there is the hidden probability split with fragment to reduce solar cell module.Another object of the present utility model is to provide a kind of tool
There is the solar cell module of above-mentioned solar cell.
To achieve these goals, the utility model provides following technical scheme：
A kind of solar cell, including back electrode and back of the body electric field；Wherein, along the length direction of the back electrode, the back of the body
There is the first gap between the end face of electrode and the back of the body electric field, or the end face of the back electrode with described to carry on the back electric field concordant.
Preferably, the length in first gap is 2-5mm.
Preferably, the back electrode is one.
Preferably, the back electrode is at least two.
Preferably, the radical of the back electrode is 2-12.
Preferably, any two back electrodes be arranged in parallel.
Preferably, the back electrode is segmented including at least two back electrodes, between adjacent two back electrode segmentations
With pre-determined distance, there is the second gap, or the back electrode between the segmentation face of the back electrode segmentation and the back of the body electric field
The segmentation face of segmentation is concordant with the back of the body electric field.
Preferably, the length in second gap is 2-5mm.
Preferably, the back of the body electric field blocks the both sides of the back electrode width.
Based on the solar cell of above-mentioned offer, the utility model additionally provides a kind of solar cell module, the sun
Energy battery component includes at least two solar cells, and the solar cell is the solar-electricity described in above-mentioned any one
Pond.
In solar cell provided by the utility model, along the length direction of back electrode, end face and the back of the body electric field of back electrode
Between have that the end face of the first gap or back electrode is concordant with back of the body electric field, so, effectively reduce back electrode and back of the body electric field boundary
The difference in height at place, so as to reduce welding in back electrode and the stress of back of the body electric field intersection, and then reduce solar battery group
There is the hidden probability split with fragment in part.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment and technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing of offer.
Fig. 1 is the schematic rear view for the solar cell that prior art provides；
Fig. 2 is the schematic diagram of back electrode series welding in the solar cell module that prior art provides；
Fig. 3 is the schematic rear view for the solar cell that the utility model embodiment provides；
Fig. 4 is the schematic diagram of back electrode series welding in the solar cell module that the utility model embodiment provides；
Fig. 5 is another schematic diagram of back electrode and back of the body electric field in the solar cell that the utility model embodiment provides.
In Fig. 1-5：
11 be silicon chip, 12 be the back of the body electric field, 13 be back electrode, 14 be welding, 21 be silicon chip, 22 be the back of the body electric field, 23 be the back of the body electricity
Pole, 24 first gaps, 25 be the second gap, 26 be welding.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As in Figure 3-5, the solar cell that the utility model embodiment provides, including back electrode 23 and back of the body electric field 22.
It is understood that back electrode 23 and back of the body electric field 22 are respectively positioned on the back side of solar cell, and specifically, back electrode 23 and back of the body electric field
22 on silicon chip 21.
Above-mentioned solar cell, along the length direction of back electrode 23, have between the end face of back electrode 23 and back of the body electric field 22
First gap 24, as shown in Figure 3 and Figure 4；Or the length direction along back electrode 23, end face and the back of the body electric field 22 of back electrode 23
Concordantly, as shown in Figure 5.
It should be noted that in order to highlight the first gap 24 in Fig. 4, it is black by being marked at the first gap 24, in the sun
In energy battery material object, there is no black filler at the first gap 24.
Above-mentioned back electrode 23 is in bar shaped, and the end face of back electrode 23 is the end at the both ends of back electrode 23 along its length
Face.The end face of back electrode 23 is concordant with back of the body electric field 22, refers to gapless and back of the body electricity between the end face of back electrode 23 and back of the body electric field 22
The top of the end of back electrode 23 is not blocked in field 22.
In the solar cell that the utility model embodiment provides, along the length direction of back electrode 23, the end of back electrode 23
Have the first gap 24 or the end face of back electrode 23 concordant with back of the body electric field 22 between face and back of the body electric field 22, so, effectively reduce
The difference in height of back electrode 23 and the back of the body intersection of electric field 22, so as to reduce welding 26 in back electrode 23 and carry on the back the intersection of electric field 22
Stress, and then reduce solar cell module and the hidden probability split with fragment occur, also reduce the life of solar cell module
Produce cost.
Meanwhile the solar cell that the utility model embodiment provides, it will not additionally increase cost, with traditional solar-electricity
Pond production is compatible, is advantageous to batch and promotes.
In above-mentioned solar cell, in order to largely reduce welding 26 in back electrode 23 and the back of the body intersection of electric field 22
Stress, length direction of the prioritizing selection along back electrode 23, there is the first gap between the end face of back electrode 23 and back of the body electric field 22
24, now the height change of welding 26 is slower, i.e. unit length inner height change is smaller, should so as to largely reduce
Power.
For the size in the first gap 24, it is designed according to being actually needed.Preferably, the length in above-mentioned first gap 24
For 2-5mm.It is understood that the length direction in the first gap 24 is the length direction of back electrode 23.
Certainly, above-mentioned first gap 24 also may be selected and is less than 2mm, or the first gap 24 is more than 5mm, it is not limited to be above-mentioned
Embodiment.
In above-mentioned solar cell, back electrode 23 can be one, can be at least two.For the radical of back electrode 23, root
It is designed according to being actually needed, the utility model embodiment is not limited this.
When back electrode 23 is at least two, the radical of prioritizing selection back electrode 23 is 2-12.
For the ease of setting back electrode 23 and improving solar cell quality, any two back electrodes 23 be arranged in parallel.
Further, the spaced set of back electrode 23.Certainly, the not spaced set, or in the presence of at least two of back electrode 23 may be selected
The relative tilt of back electrode 23 is set.
In above-mentioned solar cell, the sectional of back electrode 23 is set, also can not subsection setup.In order to save material, reduce
Cost, the subsection setup of prioritizing selection back electrode 23, specifically, back electrode 23 are segmented including at least two back electrodes, and adjacent two
There is pre-determined distance between individual back electrode segmentation, there is the second gap 25 between the segmentation face of back electrode segmentation and back of the body electric field 22,
Or the segmentation face of back electrode segmentation is concordant with back of the body electric field 22.
It is understood that in adjacent two back electrodes segmentation, a back electrode segmentation is close to another back electrode point
The end face of one end of section is segmentation face.There are pre-determined distance, and adjacent two back ofs the body between adjacent two back electrodes segmentation
There is back of the body electric field 22 between electrode segment.
For the size in the second gap 25, it is designed according to being actually needed.Preferably, the length in above-mentioned second gap 25
For 2-5mm.It is understood that the length direction in the second gap 25 is the length direction of back electrode 23.
Certainly, above-mentioned second gap 25 also may be selected and is less than 2mm, or the second gap 25 is more than 5mm, it is not limited to be above-mentioned
Embodiment.
In order to avoid back electrode 23 departs from silicon chip 21, above-mentioned back of the body electric field 22 blocks the both sides of the width of back electrode 23, i.e.,
Along the width of back electrode 23, back of the body electric field 22 has covered the part of the top surface of back electrode 23.
It should be noted that the top surface of back electrode 23, refers to one side of the back electrode 23 away from silicon chip 21.
The solar cell provided based on above-described embodiment, the utility model embodiment additionally provide a kind of solar cell
Component, the solar cell module include at least two solar cells, the solar cell be described in above-described embodiment too
Positive energy battery.
Because the solar cell that above-described embodiment provides has above-mentioned technique effect, what the utility model embodiment provided
Solar cell module has above-mentioned solar cell, then the solar cell module that the utility model embodiment provides also has
Corresponding technique effect, is repeated no more herein.
The foregoing description of the disclosed embodiments, those skilled in the art are enable to realize or using the utility model.
A variety of modifications to these embodiments will be apparent for a person skilled in the art, as defined herein general former
Reason can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Therefore, this practicality is new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase
Consistent most wide scope.
Claims (10)
1. a kind of solar cell, including back electrode (23) and back of the body electric field (22), it is characterised in that along the back electrode (23)
Length direction, there are the first gap (24) between the end face of the back electrode (23) and the back of the body electric field (22), or the back of the body electricity
The end face of pole (23) is concordant with the back of the body electric field (22).
2. solar cell according to claim 1, it is characterised in that the length of first gap (24) is 2-5mm.
3. solar cell according to claim 1, it is characterised in that the back electrode (23) is one.
4. solar cell according to claim 1, it is characterised in that the back electrode (23) is at least two.
5. solar cell according to claim 4, it is characterised in that the radical of the back electrode (23) is 2-12.
6. solar cell according to claim 4, it is characterised in that any two back electrodes (23) are parallel to be set
Put.
7. solar cell according to claim 1, it is characterised in that the back electrode (23) includes at least two back of the body electricity
Pole is segmented, and has pre-determined distance between adjacent two back electrodes segmentations, the segmentation face that the back electrode is segmented with it is described
There are the second gap (25) between back of the body electric field (22), or the segmentation face of back electrode segmentation is concordant with the back of the body electric field (22).
8. solar cell according to claim 7, it is characterised in that the length of second gap (25) is 2-5mm.
9. according to the solar cell described in any one in claim 1-8, it is characterised in that the back of the body electric field (22) is blocked
The both sides of back electrode (23) width.
10. a kind of solar cell module, including at least two solar cells, it is characterised in that the solar cell is
Solar cell as described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720711052.9U CN206976359U (en) | 2017-06-19 | 2017-06-19 | Solar cell and solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720711052.9U CN206976359U (en) | 2017-06-19 | 2017-06-19 | Solar cell and solar cell module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206976359U true CN206976359U (en) | 2018-02-06 |
Family
ID=61408683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720711052.9U Active CN206976359U (en) | 2017-06-19 | 2017-06-19 | Solar cell and solar cell module |
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| Country | Link |
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| CN (1) | CN206976359U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068781A (en) * | 2017-06-19 | 2017-08-18 | 浙江晶科能源有限公司 | Solar cell and solar cell module |
| CN110718598A (en) * | 2019-10-29 | 2020-01-21 | 无锡尚德太阳能电力有限公司 | Battery piece capable of preventing back electrodes at front end and back end from shifting after welding |
| CN111370503A (en) * | 2018-12-25 | 2020-07-03 | 苏州阿特斯阳光电力科技有限公司 | Solar cell and solar cell module |
-
2017
- 2017-06-19 CN CN201720711052.9U patent/CN206976359U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068781A (en) * | 2017-06-19 | 2017-08-18 | 浙江晶科能源有限公司 | Solar cell and solar cell module |
| CN111370503A (en) * | 2018-12-25 | 2020-07-03 | 苏州阿特斯阳光电力科技有限公司 | Solar cell and solar cell module |
| CN110718598A (en) * | 2019-10-29 | 2020-01-21 | 无锡尚德太阳能电力有限公司 | Battery piece capable of preventing back electrodes at front end and back end from shifting after welding |
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