CN207818590U - A kind of generating electricity on two sides solar cell and photovoltaic module - Google Patents
A kind of generating electricity on two sides solar cell and photovoltaic module Download PDFInfo
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- CN207818590U CN207818590U CN201820683413.8U CN201820683413U CN207818590U CN 207818590 U CN207818590 U CN 207818590U CN 201820683413 U CN201820683413 U CN 201820683413U CN 207818590 U CN207818590 U CN 207818590U
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- conductive layer
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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
Abstract
The utility model discloses a kind of generating electricity on two sides solar cell and photovoltaic modulies, generating electricity on two sides solar cell, including the generating electricity on two sides cell piece being in series, the first conductive layer and the second conductive layer of two generating electricity on two sides cell pieces of arbitrary neighborhood are connected by conductor wire, and conductor wire is connected to by conducting resinl on the first conductive layer and the second conductive layer, it is relatively low to the arrangement required precision of conductor wire, it can effectively reduce equipment cost；And using conductive glue connection between conductor wire and generating electricity on two sides cell piece, attachment force is larger, can effectively promote the reliability of solar cell；Furthermore grid line can not be printed on the first conductive layer and the second conductive layer, can effectively reduce equipment input cost and print material cost.
Description
Technical field
The utility model is related to solar energy equipment technologies, more particularly, to a kind of generating electricity on two sides solar cell and one
Kind includes the photovoltaic module of solar cell.
Background technology
A kind of intelligence grid welding technique, cell piece (using filming equipment) thin grid of wire mark again after having plated antireflective coating
(i.e.：Silver grating line), then not wire mark main grid, but the thin polymer film of one layer of embedded copper wire is covered in cell piece front.This
The copper line surface of one polymer film insert is coated with low-melting-point metal, in subsequent component lamination technique, the pressure of laminating machine
The thin grid of copper wire and wire mark are helped to be combined together with temperature, one end of these copper wire also collects in a wider convergent belt
On, convergent belt is connected to the back side of adjacent cell piece in same step laminating technology, and to realize, series connection connects between cell piece successively
It connects.
However, the dosage of the thin grid needed for said program is larger and to cell piece front serious shielding, by above-mentioned side
Case is improved, and thin grid reduce the use of silver with this using segmental structure (quantity for being equivalent to increase main grid in traditional scheme)
It measures and is blocked to cell piece is positive.Opposite, new problem is also brought in this way, i.e.,：If any on thin polymer film
The fracture of copper wire, then the electric current of this string short thin grid of copper wire connection all will be unable to be collected.In order to solve this problem, exist
Floating connection line is increased between the copper wire of arbitrary neighborhood again, and the thin grid of floating connection line and cell piece are simultaneously not attached to, and are only played
The effect for being interconnected between copper wire and copper wire being supported.There are the following problems for the relevant technologies：
1, cell piece relies on copper wire and is welded with thin grid, it is desirable that the arrangement precision of copper wire and thin grid is higher；
2, binding force is less than normal after copper wire and thin grid weld, and product reliability is insufficient；
3, the thin grid equipment input cost of printing is big, and used ag material is of high cost.
Utility model content
The utility model embodiment provides a kind of generating electricity on two sides solar cell, does not depend on copper wire and is welded with thin grid
It connects, the arrangement precision of copper wire can be reduced；And the attachment force of copper wire and cell piece is larger, can promote product reliability；It can
Thin grid are not printed or printed less, equipment input cost and print material cost can be reduced.
The utility model embodiment additionally provides a kind of photovoltaic module.
The generating electricity on two sides solar cell that the utility model embodiment provides, including the generating electricity on two sides cell piece that is in series,
The first conductive layer and the second conductive layer of two generating electricity on two sides cell pieces of arbitrary neighborhood are connected by conductor wire, and described
Conductor wire is connected to by conducting resinl on the first conductive layer and the second conductive layer.
Optionally, the conductor wire is 2 or more, and arranged in parallel.
Optionally, the conductor wire includes 30~150, a diameter of 20um~300um of any conductor wire.
Optionally, the both ends of the generating electricity on two sides solar cell are connected separately with electric lead-out wire by conducting resinl.
Optionally, the bonding force of the conducting resinl is not less than 2N/cm, and the bulk resistor of the conducting resinl is 5 × 10-6~10 ×
10-4Ω。
Optionally, the conducting resinl is isotropic conductive adhesive.
Optionally, the conductor wire includes at least one of aluminum steel, copper wire, silver wire, gold thread and welding.
Optionally, the generating electricity on two sides cell piece is silicon heterogenous cell piece, first conductive layer and/or described second
Conductive layer is ITO conductive films, FTO conductive films or AZO conductive films, first conductive layer and/or described second conductive
The sheet resistance of layer is 0.1~100 Ω/cm2, the thickness of first conductive layer and/or second conductive layer be 80nm~
140nm。
Optionally, the first grid line is provided on the first conductive layer, the conductor wire is connected to the first grid line by conducting resinl
On the first conductive layer.
Optionally, the conductor wire is perpendicular to first grid line.
Optionally, the second grid line is provided on the second conductive layer, the conductor wire is connected to the second grid line by conducting resinl
On the second conductive layer.
Optionally, the conductor wire is perpendicular to second grid line.
The photovoltaic module that the utility model embodiment provides, including the generating electricity on two sides solar energy described in any of the above-described embodiment
Battery.
Compared with prior art, the generating electricity on two sides solar cell that the utility model embodiment provides, adjacent two two-sided hair
Connected by conductor wire between electric cell piece, conductor wire be directly connected to by conducting resinl (as bonded) in the first conductive layer and
It is relatively low to the arrangement required precision of conductor wire on second conductive layer, it can effectively reduce equipment cost；And conductor wire and
Using conductive glue connection between generating electricity on two sides cell piece, attachment force is larger, can effectively promote the reliability of solar cell；
Furthermore grid line can not be printed or printed less on the first conductive layer and the second conductive layer, can effectively reduce equipment input cost and
Print material cost.
The generating electricity on two sides solar cell that the utility model embodiment provides, fabrication processing is simple, conductor wire positioning
Required precision is low, and manufactured solar-electricity pool environment ageing-resistant performance is good, without using high-cost low temperature silver paste (low temperature silver paste
Account for the cost 30~40% of battery), without screen process press and related drying, curing apparatus is used, effectively reduce equipment
And operation cost.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages can pass through
Specifically noted structure is realized and is obtained in specification, claims and attached drawing.
Description of the drawings
Attached drawing is used for providing further understanding technical solutions of the utility model, and a part for constitution instruction,
With for explaining the technical solution of the utility model, do not constituted to technical solutions of the utility model together with embodiments herein
Limitation.
Fig. 1 is the main structure diagram of the generating electricity on two sides solar cell described in the utility model one embodiment；
Fig. 2 is the overlooking structure diagram of generating electricity on two sides solar cell shown in FIG. 1；
Fig. 3 is the overlooking structure diagram of the generating electricity on two sides solar cell described in the utility model another embodiment.
Wherein, the correspondence in Fig. 1 to Fig. 3 between reference numeral and component names is：
1 generating electricity on two sides cell piece, 11 first conductive layers, 12 second conductive layers, 2 conductor wires, 3 electric lead-out wires, 4 grid lines.
Specific implementation mode
To make the purpose of this utility model, technical solution and advantage be more clearly understood, below in conjunction with attached drawing to this
The embodiment of utility model is described in detail.It should be noted that in the absence of conflict, embodiment in the application and
Feature in embodiment mutually can be combined arbitrarily.
The utility model embodiment provide generating electricity on two sides solar cell, as depicted in figs. 1 and 2, including it is front and back successively
Two sides of at least two generating electricity on two sides cell pieces 1 and conductor wire 2 being arranged, any generating electricity on two sides cell piece 1 are respectively provided with
First conductive layer 11 and the second conductive layer 12, the first conductive layer 11 of multiple generating electricity on two sides cell pieces 1 upward, the second conductive layer
12 downward, on conductor wire 2 be coated with conducting resinl, conductor wire 2 be arranged arbitrary neighborhood two generating electricity on two sides cell pieces 1 it
Between, and the first end of conductor wire 2 by conductive adhesive the adjacent generating electricity on two sides cell piece 1 in front side the first conductive layer 11
On, the second end of conductor wire 2 is by conductive adhesive on the second conductive layer 12 of the adjacent generating electricity on two sides cell piece 1 of rear side.
The generating electricity on two sides solar cell that the utility model embodiment provides leads between adjacent two generating electricity on two sides cell piece 1
It crosses conductor wire 2 to connect, conductor wire 2 is directly connected to (such as by conducting resinl：Bonding) it is conductive in the first conductive layer 11 and second
It is relatively low to the arrangement required precision of conductor wire 2 on layer 12, it can effectively reduce equipment cost；And conductor wire 2 and two-sided
Using conductive glue connection between generating battery piece 1, attachment force is larger, can effectively promote the reliability of solar cell；Again
Grid line can not be printed or be printed less on person, the first conductive layer 11 and the second conductive layer 12, can effectively reduce equipment input cost
With print material cost.
The generating electricity on two sides solar cell that the utility model embodiment provides, fabrication processing is simple, and conductor wire 2 positions
Required precision is low, and manufactured solar-electricity pool environment ageing-resistant performance is good, without using high-cost low temperature silver paste (low temperature silver paste
Account for the cost 30~40% of battery), without screen process press and related drying, curing apparatus is used, effectively reduce equipment
And operation cost.
Conducting resinl：Be one kind can effectively be bonded a variety of materials but also adhesive.Conducting resinl presses base
Composition can be divided into structural type and filled-type two major classes.Structural type, which refers to the high molecular material as conducting resinl matrix itself, to be had
The conducting resinl of electric conductivity；Filled-type refers to usual adhesive as matrix, and relies on addition electroconductive stuffing that glue is made to have and lead
The conducting resinl of electro ultrafiltration.
For the resistance preferably collected the electric current on generating electricity on two sides cell piece 1, reduce conductor wire 2, arbitrary neighborhood two pairs
Conductor wire 2 between face generating battery piece 1 is arranged in parallel 2 or more, is specifically configured to, arbitrary neighborhood two generating electricity on two sides electricity
Conductor wire 2 between pond piece 1 be 30~150 arranged in parallel (such as 30,60,100,120 or 150, most preferably
It is 60~120), a diameter of 20um~300um (optimum diameter is 50~100um) of any conductor wire 2, resistance is smaller,
Electric current collection rate is higher, and charge efficiency is high, and performance is good.
Moreover, conducting resinl is isotropic conductive adhesive, conducting resinl realizes solidification, conducting resinl after solidification by high temperature or illumination
Bonding force be not less than 2N/cm, the bulk resistor of conducting resinl requires to be 5 × 10-6~10 × 10-4Ω.First conductive layer 11 and second
The thickness of conductive layer 12 is made as 80nm~140nm (such as 80nm, 100nm or 140nm, optimum value select 110nm), and first leads
In 0.1~100 Ω/cm2, sheet resistance is the smaller the better for electric layer 11 and the sheet resistance of the second conductive layer 12.
Further, the both ends of generating electricity on two sides solar cell are also connected separately with electric lead-out wire 3 by conducting resinl, i.e.,：
On most the second conductive layer 12 of the generating electricity on two sides cell piece 1 of front side and positioned at the of the most generating electricity on two sides cell piece 1 of rear side
It is also bonded with electric lead-out wire 3 respectively by conducting resinl on one conductive layer 11, as the anode and cathode of solar cell, with more preferable
Ground is electrically connected in photovoltaic module.Electric lead-out wire 3 can be one kind or more in aluminum steel, copper wire, silver wire, gold thread and welding
Kind.
Specifically, generating electricity on two sides cell piece 1 is silicon heterogenous cell piece, the first conductive layer 11 and/or the second conductive layer 12
For conductive transparent oxide film, it is such as tin indium oxide conductive film (being commonly called as ITO conductive films), adulterates the stannic oxide of fluorine
The zinc oxide conductive thin film (being commonly called as AZO conductive films) etc. of conductive film (being commonly called as FTO conductive films) or adulterated al can be achieved
The purpose of the application, objective is without departing from the design philosophy of the utility model, and details are not described herein, should all belong to the guarantor of the application
It protects in range.
Silicon heterogenous cell piece includes monocrystalline silicon plate (n type single crystal silicon plate or p type single crystal silicon version), and monocrystalline silicon plate one side is set
It is equipped with intrinsic film and p-type doped silicon film (non-crystalline silicon or microcrystal silicon, such as p-type hydrogenation non crystal silicon film), monocrystalline silicon plate is another
Side is provided with intrinsic film and n-type doping silicon thin film (non-crystalline silicon or microcrystal silicon, such as N-type hydrogenation non crystal silicon film), p-type doping
Conductive transparent oxide film (TCO thin film) is both provided on silicon thin film and n-type doping silicon thin film.Transparent oxide film is
First conductive layer and the second conductive layer.
Specifically, conductor wire 2 is one or more in aluminum steel, copper wire, silver wire, gold thread and welding, this Shen can be achieved
Purpose please, objective is without departing from the design philosophy of the utility model, and details are not described herein, should all belong to the protection model of the application
In enclosing.
Wherein, generating electricity on two sides cell piece 1 can be front and back two, three, five, ten or 20 set gradually
Deng.
Certainly, it as shown in figure 3, conductor wire 2 disconnects and influences electric current collection in order to prevent, is glued on generating electricity on two sides cell piece 1
The side for connecing conductor wire 2 is also both provided with grid line 4, and for conductor wire 2 by conductive adhesive on grid line 4, grid line 4 will be arranged in parallel
Conductor wire 2 be connected to each other, even if can be along other if the electric current opened on generating electricity on two sides cell piece 1 short there are conductor wire 2
Conductor wire 2 is transmitted and is collected.The grid line 4 that the side of conductor wire 2 is bonded on any generating electricity on two sides cell piece 1 can also
It it is more disposed in parallel, preferably so that conductor wire 2 parallel on 1 side of generating electricity on two sides cell piece is interconnected to each other.
Preferably, the conductor wire 2 for being in 1 same side of generating electricity on two sides cell piece intersects with grid line 4, preferred vertical intersection.
The side of the solar cell of electric lead-out wire 3, which is arranged, can also be arranged grid line, can also realize that the purpose of the application, objective do not take off
Design philosophy from the utility model, details are not described herein, should also belong in the protection domain of the application.
It is of course also possible to be that the first grid line (grid line includes the first grid line) is only arranged on the first conductive layer, either, only
The mode of second grid line (grid line includes the second grid line) etc. is set on the second conductive layer, can also realize the purpose of the application,
Objective is without departing from the design philosophy of the utility model, and details are not described herein, should all belong in the protection domain of the application.
The photovoltaic module (not shown) that the utility model embodiment provides, including it is double described in any of the above-described embodiment
Face power generation solar battery.
The photovoltaic module that the utility model embodiment provides, has the generating electricity on two sides solar energy described in any of the above-described embodiment
The all advantages of battery, details are not described herein.
Wherein, photovoltaic module includes multiple generating electricity on two sides solar cells, and multiple generating electricity on two sides solar cells can be
It is arranged in series, can also be to be arranged in parallel, can also be sections in series setting, part in parallel setting etc., the application can be achieved
Purpose, objective is without departing from the design philosophy of the utility model, and details are not described herein, should all belong to the protection domain of the application
It is interior.
In conclusion the generating electricity on two sides solar cell that the utility model embodiment provides, adjacent two generating electricity on two sides battery
It is connected by conductor wire between piece, conductor wire is connected directly between on the first conductive layer and the second conductive layer i.e. by conducting resinl
Can, it is relatively low to the arrangement required precision of conductor wire, it can effectively reduce equipment cost；And conductor wire and generating electricity on two sides cell piece
Between using conductive glue connection, attachment force is larger, can effectively promote the reliability of solar cell；Furthermore first is conductive
Grid line can not be printed on layer and the second conductive layer, can effectively reduce equipment input cost and print material cost.
The generating electricity on two sides solar cell that the utility model embodiment provides, fabrication processing is simple, conductor wire positioning
Required precision is low, and manufactured solar-electricity pool environment ageing-resistant performance is good, without using high-cost low temperature silver paste (low temperature silver paste
Account for the cost 30~40% of battery), without screen process press and related drying, curing apparatus is used, effectively reduce equipment
And operation cost.
In description in the present invention, it should be noted that term "upper", "lower", " side ", " other side ", " one
The orientation or positional relationship of the instructions such as end ", " other end ", " side ", " opposite ", " quadrangle ", " periphery ", " " mouth " word structure " is base
In orientation or positional relationship shown in the drawings, be merely for convenience of describing the present invention and simplifying the description, rather than indicate or
It implies that signified structure has specific orientation, with specific azimuth configuration and operation, therefore should not be understood as new to this practicality
The limitation of type.
In the description of the utility model embodiment unless specifically defined or limited otherwise, term " connection ", " directly
Connection ", " being indirectly connected with ", " being fixedly connected ", " installation ", " assembly " shall be understood in a broad sense, for example, it may be fixedly connected,
Can be detachably connected, or be integrally connected；Term " installation ", " connection ", " being fixedly connected " can be directly connected, and also may be used
Indirectly connected through an intermediary, can be the connection inside two elements.For the ordinary skill in the art,
The concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Although the embodiment disclosed by the utility model is as above, the content only the utility model for ease of understanding
And the embodiment used, it is not limited to the utility model.Technical staff in any the utility model fields,
Under the premise of not departing from the spirit and scope disclosed by the utility model, it can be carried out in the form and details of implementation any
Modification and variation, but the scope of patent protection of the utility model, the appended claims that must still be subject to are defined.
Claims (10)
1. a kind of generating electricity on two sides solar cell, including the generating electricity on two sides cell piece that is in series, two of arbitrary neighborhood are described double
The first conductive layer and the second conductive layer of face generating battery piece are connected by conductor wire, and the conductor wire passes through conductive glue connection
On the first conductive layer and the second conductive layer.
2. generating electricity on two sides solar cell according to claim 1, which is characterized in that the conductor wire is 2 or more, and
It is arranged in parallel.
3. generating electricity on two sides solar cell according to claim 2, which is characterized in that the conductor wire includes 30~150
Root, a diameter of 20um~300um of any conductor wire.
4. generating electricity on two sides solar cell according to claim 1, which is characterized in that the generating electricity on two sides solar cell
Both ends are bonded with electric lead-out wire by conducting resinl respectively.
5. generating electricity on two sides solar cell according to claim 1, which is characterized in that the bonding force of the conducting resinl is not small
In 2N/cm, the bulk resistor of the conducting resinl is 5 × 10-6~10 × 10-4Ω；And/or；The conducting resinl is that isotropism is conductive
Glue.
6. generating electricity on two sides solar cell according to claim 1, which is characterized in that the conductor wire includes aluminum steel, copper
At least one of line, silver wire, gold thread and welding.
7. generating electricity on two sides solar cell according to any one of claim 1 to 6, which is characterized in that the two-sided hair
Electric cell piece is that silicon heterogenous cell piece, first conductive layer and/or second conductive layer are led for ITO conductive films, FTO
The sheet resistance of conductive film or AZO conductive films, first conductive layer and/or second conductive layer is 0.1~100 Ω/cm2,
The thickness of first conductive layer and/or second conductive layer is 80nm~140nm.
8. generating electricity on two sides solar cell according to claim 1, which is characterized in that be provided with first on the first conductive layer
Grid line, the conductor wire are connected to by conducting resinl on the first grid line and the first conductive layer；And/or；It is arranged on second conductive layer
There are the second grid line, the conductor wire to be connected on the second grid line and the second conductive layer by conducting resinl.
9. generating electricity on two sides solar cell according to claim 1, which is characterized in that be provided with the first grid on the first conductive layer
Line is provided with the second grid line on the second conductive layer, and the conductor wire and first grid line and second grid line are vertical.
10. a kind of photovoltaic module, which is characterized in that include the generating electricity on two sides sun as claimed in any one of claims 1-9 wherein
It can battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820683413.8U CN207818590U (en) | 2018-05-08 | 2018-05-08 | A kind of generating electricity on two sides solar cell and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820683413.8U CN207818590U (en) | 2018-05-08 | 2018-05-08 | A kind of generating electricity on two sides solar cell and photovoltaic module |
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| CN207818590U true CN207818590U (en) | 2018-09-04 |
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ID=63320770
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384191A (en) * | 2018-12-28 | 2020-07-07 | 泰州隆基乐叶光伏科技有限公司 | Double-sided solar cell interconnection structure |
| CN111403497A (en) * | 2018-12-28 | 2020-07-10 | 泰州隆基乐叶光伏科技有限公司 | Solar cell interconnection structure |
| CN111403498A (en) * | 2018-12-28 | 2020-07-10 | 泰州隆基乐叶光伏科技有限公司 | Double-sided solar cell interconnection structure |
| CN111403525A (en) * | 2018-12-28 | 2020-07-10 | 泰州隆基乐叶光伏科技有限公司 | Solar cell interconnection structure |
| CN113823701A (en) * | 2021-09-29 | 2021-12-21 | 西南石油大学 | Electrode design and battery interconnection method of double-sided power generation heterojunction solar battery |
-
2018
- 2018-05-08 CN CN201820683413.8U patent/CN207818590U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384191A (en) * | 2018-12-28 | 2020-07-07 | 泰州隆基乐叶光伏科技有限公司 | Double-sided solar cell interconnection structure |
| CN111403497A (en) * | 2018-12-28 | 2020-07-10 | 泰州隆基乐叶光伏科技有限公司 | Solar cell interconnection structure |
| CN111403498A (en) * | 2018-12-28 | 2020-07-10 | 泰州隆基乐叶光伏科技有限公司 | Double-sided solar cell interconnection structure |
| CN111403525A (en) * | 2018-12-28 | 2020-07-10 | 泰州隆基乐叶光伏科技有限公司 | Solar cell interconnection structure |
| CN113823701A (en) * | 2021-09-29 | 2021-12-21 | 西南石油大学 | Electrode design and battery interconnection method of double-sided power generation heterojunction solar battery |
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