CN206976360U - The solar cell that a kind of disconnected grid of nothing can be connected arbitrarily - Google Patents
The solar cell that a kind of disconnected grid of nothing can be connected arbitrarily Download PDFInfo
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- CN206976360U CN206976360U CN201720758094.8U CN201720758094U CN206976360U CN 206976360 U CN206976360 U CN 206976360U CN 201720758094 U CN201720758094 U CN 201720758094U CN 206976360 U CN206976360 U CN 206976360U
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Abstract
The utility model discloses the solar cell that a kind of disconnected grid of nothing can be connected arbitrarily, belong to technical field of solar batteries.Including grid line and electrode, grid line includes thin grid line and wide grid line, and thin grid line is cellular grid grid line and is evenly distributed on front side of silicon wafer；Electrode is arranged on silicon chip edge, is made up of polygonal electrodes and wide grid line, the exterior angle connection of wide grid line and polygonal electrodes, and radially distributes.The utility model is simple in construction, it is reasonable in design, appearance looks elegant, avoid influenceing, reducing caused by disconnected grid the shielded area of battery, improve battery efficiency, improve the aesthetics of product, facilitate welding battery, encapsulation simultaneously, convergent belt is reduced, increases the unit area generating efficiency of photovoltaic module, reduces manufacturing cost and testing cost.
Description
Technical field
The utility model is related to day sun can cell art.
Background technology
Solar cell, which generates electricity, needs sunlight, and surface irradiated area is bigger, and generating efficiency is higher.But in order to by caused by
Electric charge extracts, it is necessary to which electrode is collected, and electrode blocks for metal to sunlight, so needing electrode area as small as possible, again
Can uniform collection electric charge and drawing pick out.
At present, the solar cell feature produced both at home and abroad is：1）Solar cel electrode by one or several main gate line and
A plurality of secondary grid line, wherein a plurality of thin grid line is parallel lines, main gate line is mutually perpendicular to thin grid line；Due to solar cell have it is parallel
Straight line grid line, surface electrode are inevitably present the disconnected grid in printing loop or empty print phenomenon in printing, sintering process；This is existing
As the thin grid line of whole piece can be made can not to form effective loop, collecting for electric current is had a strong impact on, battery is increased in-fighting；2）Sun electricity
Pond primary gate electrode wider width, such as 20-40 times of usually thin grid line, two grid, three grid, the main grid line width one of four grid line cells
As be 2mm, 1.5mm, 1mm, so overall area occupied is larger, influences generating efficiency；Main grid, linear pattern pair grid with time width need
Want substantial amounts of silver paste, cost is higher；3）Because battery main gate line is applied in one direction of battery surface, between in the battery,
In the battery applications welding in making photovoltaic module, can only a direction weld to form battery strings, after forming battery strings, and only
Battery strings can be connected by convergent belt so that battery strings need a large amount of convergent belts when connecting, and increase the area of component, no
But cost is added, while reduces the utilization rate of component area, reduces the power of photovoltaic module unit area；4）Monitoring is disconnected
Grid, frequently with EL testers to battery testing, after finding disconnected grid, pick out as goods of inferior quality or scrap processing, have impact on electricity
The product qualified rate in pond；To avoid the battery that disconnected grid be present from dispatching from the factory, it is also desirable to carry out EL detections to battery, considerably increase detection
Cost；5）In addition, solar battery surface is also required to certain exterior aesthetics.
In summary, it is necessary to which a kind of new solar cell, can arbitrarily be connected, and production cost is low without disconnected grid.
Utility model content
The technical problems to be solved in the utility model is to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of to appoint without disconnected grid
The solar cell of meaning connection, simple in construction, reasonable in design, appearance looks elegant, avoid influenceing caused by disconnected grid, reduce blocking for battery
Area, battery efficiency is improved, improves the aesthetics of product, while facilitate welding battery, encapsulation, reduced convergent belt, increase photovoltaic
The unit area generating efficiency of component, reduce manufacturing cost and testing cost.
At present, the solar cell technical disadvantages produced both at home and abroad are：1）The pattern of parallel thin grid line, for two parallel grid lines
Between each generator unit point, the electric current of extraction is uneven, and middle part can only flow out to both sides；For uniformly dividing
It is not minimum that cloth, which collects area for electric charge,；2）At parallel thin grid line such as one and disconnected grid phenomenon occurs for the above, then can not at this
Extracted current, local pyrexia is caused, influence cell power generation efficiency；3）Solar cell primary gate electrode wider width, it is overall to take face
Product is larger, influences generating efficiency；Main grid, the substantial amounts of silver paste of linear pattern pair grid needs with time width, cost are higher；4）Battery surface
Electrode, when battery applications are welded, can only there is a direction between in the battery so that a large amount of converge is needed when battery strings connect
Band is flowed, not only adds cost, while reduce the power of photovoltaic module unit area.
As is known in the art, some sets the point of interruption in thin grid line, and each point of interruption is connected by return line；So
Single thin grid line length is set to shorten half so that disconnected grid phenomena impair degree decreases, but is not avoided that disconnected grid fundamentally
Phenomenon；Another problem is added simultaneously, exactly battery is artificially divided into several parts by " breakpoint ", for application welding technique requirement
Greatly increasing, it is desirable to each main grid is required to welding well, otherwise can not draw the battery current of several areas in a measure,
Add welding difficulty and testing cost；Although avoiding also " disconnected grid phenomenon ", grid line width is relatively conventional at present thin
Grid line wider width, while main gate line or two or three parallel lines are applied in battery surface, the change of the grid line gross area is little,
Cost of sizing agent attenuating is less, and can not solve the problems, such as can only same direction welding.
In a word, at present " parallel thin grid line and orthogonal main gate line " technology battery surface is blocked it is larger, to printing
It is it is required that higher, it is impossible to avoid disconnected grid phenomenon, influence cell power generation efficiency；There is certain limitation to battery applications simultaneously, will to welding
Ask higher, can only limit in one direction.
In order to solve the above technical problems, technical solution adopted in the utility model is：It is a kind of arbitrarily to be connected without disconnected grid
Solar cell, including grid line and electrode, grid line includes thin grid line and wide grid line, and thin grid line is cellular grid grid line and uniformly
It is distributed in front side of silicon wafer；Electrode is arranged on silicon chip edge, is made up of polygonal electrodes and wide grid line, wide grid line and polygonal electrodes
Exterior angle connection, and radially distribute.
Preferably, the electrode is made up of quadrangle electrode and four wide grid lines, the wide grid line and quadrangle electrode
Four exterior angles connection and radially distributed to silicon chip inside.
Preferably, the electrode is made up of pentagonal electrode and three or five wide grid lines, the wide grid line and five sides
Three exterior angles of shape electrode or five exterior angles connect and radially distributed to silicon chip inside.
Preferably, the electrode silicon chip per side be provided with it is at least one.
Preferably, it is in mutually connected hexagon that the cellular network grid line, which is thin grid line, each tie point is by three
Individual is in that the thin grid line of 120 degree of angular direction intersects.
Preferably, the length of side of the hexagon is no more than 3mm.
Preferably, the width of the thin grid line is 20 μm~50 μm.
Preferably, the width of the wide grid line is 100 μm~200 μm.
Preferably, the electrode can be one or both of quadrangle electrode, pentagonal electrode or hexagonal shaped electrodes
Combination above.
It is using beneficial effect caused by above-mentioned technical proposal：The utility model is simple in construction, reasonable in design, outward appearance
It is attractive in appearance, avoid influenceing, reducing caused by disconnected grid the shielded area of electrode, improve battery efficiency, improve the aesthetics of product, simultaneously
Facilitate welding battery, encapsulation, reduce convergent belt, uniform collection electric current, avoid long grid line from occurring, increase the unit plane of photovoltaic module
Product generating efficiency, reduces manufacturing cost and testing cost.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model quadrangle electrode；
Fig. 3 is the structural representation of the utility model pentagonal electrode；
In figure：1st, thin grid line；2nd, wide grid line；3rd, silicon chip；4th, quadrangle electrode；5th, pentagonal electrode.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description, it is clear that institute below
The embodiment of description is only part of the embodiment of the present utility model, rather than whole embodiments.Based on the utility model
Embodiment, those of ordinary skill in the art are all in technology of the present utility model on the premise of creative work is not made
Any modification, equivalent substitution and improvements made on the basis of scheme etc., should be included within the scope of the utility model, all
Belong to the scope of the utility model protection.
Embodiment 1
The solar cell that a kind of disconnected grid of nothing can be connected arbitrarily, including grid line and electrode, grid line include thin grid line 1 and wide grid line
2, the thin width of grid line 1 is 20 μm, and the width of wide grid line 2 is 100 μm, and thin grid line 1 is cellular grid grid line and is evenly distributed on
Front side of silicon wafer, thin grid line 1 is in mutually connected hexagon, and each tie point is by three phases of thin grid line 1 in 120 degree of angular direction
Hand over, by taking 156mm × 156mm batteries as an example, the length of side of hexagon is 3mm, and relative both sides long spacing is 5.18mm；Electrode is set
At the edge of silicon chip 3, it is made up of polygonal electrodes and wide grid line 2, wide grid line 2 is connected with the exterior angle of polygonal electrodes, and in radiation
Shape is arranged；Wherein the electrode on the corresponding both sides of silicon chip is respectively made up of four quadrangle electrodes 4 and four wide grid line 2, the wide grid
Line is connected with four corners of quadrangle electrode and to radially distributing inside silicon chip 3；Two other corresponding edge electrodes
Respectively it is made up of four pentagonal electrodes 5 and 3 wide grid line 2, wide grid line 2 is connected with three outer corners of pentagonal electrode and to silicon
Radially distributed inside piece 3.
The technical solution of the utility model is using cellular network, palm-type electrode scheme, the i.e. direction of single-point three, six side nets
Shape structure collected current, the method for single-point edge welding, uniform collection electric current, reduce electrode shielded area, avoid long grid line from going out
It is existing；Cellular network grid line, i.e., thin grid line 1 is in mutually connected hexagon, and each tie point is by three grid in 120 degree of angular direction
Line intersects, hexagonal side length 3mm, and relative both sides long spacing is 5.18mm, 20 μm of grid line width；It is of the present utility model beneficial
Effect has the following aspects：
In terms of electric current collection effect, this patent electrode structure is better than current traditional structure, and effect improves 3 times；Pass at present
The parallel thin grid number of lines of system is 80 to 100, and by 100 calculating, adjacent two central points are apart from thin grid line distance
0.78mm, the generation current most can only nearby flow out to both sides grid line, and hexagonal centre point can in cellular network grid line
To be flowed out to six direction around, according to current parallel characteristic, in the case of collected current effect of the same race, hexagon opposite side distance
It can be 3 times of parallel lines, the relatively current 100 parallel thin effects of grid line 1, hexagon can be reduced in cellular grid line network
To 30 or so, the present embodiment is 30 × 34 forms, and so every thin grid line 1 only has 3mm, while each node has 3 lines
Add collecting effect.
In terms of anti-breaking grid, the not disconnected grid phenomenon of the technical program electrode structure；The technical program electrode structure is due to every
The thin grid line 1 of bar only has 3mm, while each node has 3 lines, particularly every line to be connected with each other, so as in the absence of tradition at present
Longer parallel lines have because the grid that break influence the phenomenon of cell current collection, it is entirely avoided disconnected grid.
On shielded area, the electrode structure of the technical program reduces original 50%, and cell power generation amount can be made to improve 2%
More than；According to thin 50 μm of grid line, at present exemplified by the grid line cells of conventional batteries main gate line 2mm two, structure shielded area is 1400
mm2, the wherein mm of main gate line area 6202, the thin mm of grid line area 7802, it is the 5.8% of the gross area；The technical program structure is blocked
Area is 620 mm2, the wherein mm of network grid line area 4602, the mm of electrode area 1602, it is the 2.5% of the gross area, can so carries
High 3.3% generated energy.
In electric current transmission, the technical program battery is better than current conventional batteries；By taking 156mm × 156mm batteries as an example, hair
Electric maximum current is typically consistent in 8A or so, cellular network grid line homogeneous current distribution；Wide grid line on palm-type electrode
Structure design so that the final Rendezvous Point bearing capacity of battery weakest link electrode greatly increases, and avoids a certain master of conventional batteries
Current unevenness caused by grid line rosin joint is even；Set the point of interruption especially in thin grid line, caused by several points several times product battery
The phenomenon that electric current can not be drawn, the phenomenon are detected with EL testers, it may appear that 1/3rd, the black phenomenon of a quarter.
In battery use, palm-type electrode is better than current conventional batteries, because battery electrode is designed on battery side
It edge or surrounding, can be welded with any direction, be easy to the application of photovoltaic module.
On in terms of the battery detecting, testing cost can be lowered.Because homogeneous current distribution is consistent, grid line length only 3mm,
Disconnected grid are completely avoid, can also remove EL detections from.
In a word, the utility model is simple in construction, reasonable in design, appearance looks elegant, avoids influenceing caused by disconnected grid, reduces electrode
Shielded area, improve battery efficiency, improve the aesthetics of product, at the same facilitate welding battery, encapsulation, reduce convergent belt,
Even collected current, avoid long grid line from occurring, increase the unit area generating efficiency of photovoltaic module, reduce manufacturing cost and detection into
This.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type, a variety of modifications to the present embodiment will be apparent for those skilled in the art, people in the art
Member designs the product of other structures according to principle of the present utility model, belongs to the scope of protection of the utility model, this practicality
It is new to be not intended to be limited to embodiment illustrated herein, and be to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
- The solar cell that grid can be connected arbitrarily 1. a kind of nothing is broken, including grid line and electrode, the grid line include thin grid line（1）And width Grid line（2）, it is characterised in that：The thin grid line（1）For cellular grid grid line and it is evenly distributed on front side of silicon wafer；The electrode It is arranged on silicon chip（3）Edge, by polygonal electrodes and wide grid line（2）Composition, the wide grid line（2）With the polygonal electrodes Exterior angle connects, and radially distributes.
- The solar cell that grid can be connected arbitrarily 2. a kind of nothing according to claim 1 is broken, it is characterised in that：The electrode by Quadrangle electrode（4）With four wide grid lines（2）Composition, the wide grid line（2）With quadrangle electrode（4）Four exterior angles connection and To silicon chip（3）Inside radially distributes.
- The solar cell that grid can be connected arbitrarily 3. a kind of nothing according to claim 1 is broken, it is characterised in that：The electrode by Pentagonal electrode（5）With three or five wide grid lines（2）Composition, the wide grid line（2）With pentagonal electrode（5）Three exterior angles Or five exterior angles connection and to silicon chip（3）Inside radially distributes.
- The solar cell that grid can be connected arbitrarily 4. a kind of nothing according to claim 1 is broken, it is characterised in that：The electrode exists Silicon chip（3）It is provided with per side at least one.
- The solar cell that grid can be connected arbitrarily 5. a kind of nothing according to claim 1 is broken, it is characterised in that：It is described cellular Network grid line is thin grid line（1）In mutually connected hexagon, each tie point is by three thin grid lines in 120 degree of angular direction （1）It is intersecting.
- The solar cell that grid can be connected arbitrarily 6. a kind of nothing according to claim 5 is broken, it is characterised in that：The hexagon The length of side be no more than 3mm.
- The solar cell that grid can be connected arbitrarily 7. a kind of nothing according to claim 1 is broken, it is characterised in that：The thin grid line （1）Width be 20 μm~50 μm.
- The solar cell that grid can be connected arbitrarily 8. a kind of nothing according to claim 1 is broken, it is characterised in that：The wide grid line （2）Width be 100 μm~200 μm.
- The solar cell that grid can be connected arbitrarily 9. a kind of nothing according to claim 1 is broken, it is characterised in that：The electrode can For quadrangle electrode（4）, pentagonal electrode（5）Or combination more than one or both of hexagonal shaped electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720758094.8U CN206976360U (en) | 2017-06-27 | 2017-06-27 | The solar cell that a kind of disconnected grid of nothing can be connected arbitrarily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720758094.8U CN206976360U (en) | 2017-06-27 | 2017-06-27 | The solar cell that a kind of disconnected grid of nothing can be connected arbitrarily |
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| Publication Number | Publication Date |
|---|---|
| CN206976360U true CN206976360U (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720758094.8U Withdrawn - After Issue CN206976360U (en) | 2017-06-27 | 2017-06-27 | The solar cell that a kind of disconnected grid of nothing can be connected arbitrarily |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146822A (en) * | 2017-06-27 | 2017-09-08 | 英利能源（中国）有限公司 | The solar cell that a kind of disconnected grid of nothing can be connected arbitrarily |
-
2017
- 2017-06-27 CN CN201720758094.8U patent/CN206976360U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146822A (en) * | 2017-06-27 | 2017-09-08 | 英利能源（中国）有限公司 | The solar cell that a kind of disconnected grid of nothing can be connected arbitrarily |
| CN107146822B (en) * | 2017-06-27 | 2023-08-15 | 英利能源发展有限公司 | Solar cell capable of being connected at will without broken grid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180206 Effective date of abandoning: 20230815 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180206 Effective date of abandoning: 20230815 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |