CN209675302U - MWT solar battery group string and component - Google Patents
MWT solar battery group string and component Download PDFInfo
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- CN209675302U CN209675302U CN201920437169.1U CN201920437169U CN209675302U CN 209675302 U CN209675302 U CN 209675302U CN 201920437169 U CN201920437169 U CN 201920437169U CN 209675302 U CN209675302 U CN 209675302U
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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
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a kind of MWT solar battery group string and component, MWT solar battery group string includes multiple MWT solar battery cells in multiple lines and multiple rows arrangement, the opposite side edge of each MWT solar battery cell is respectively equipped with front electrode contact point and rear electrode contact point, correspondingly the front electrode contact point of the MWT solar battery cell of adjacent rows and adjacent column and rear electrode contact point interphase distribution；The MWT solar battery cell of each MWT solar battery cell and row adjacent thereto series connection, and/or and column adjacent thereto MWT solar battery cell series connection, make MWT solar battery group string formed current path；Anode and cathode are formed in the neighboring edge for the outermost two neighboring MWT solar battery cell for being located at MWT solar battery group string, the anode and cathode of group string are closer, above-mentioned group of string is used for solar cell module, busbar usage amount can be reduced, reduce consumption of the component power on busbar, lifting assembly performance.
Description
Technical field
The utility model relates to technical field of solar batteries, in particular to a kind of MWT solar battery group string and component.
Background technique
Solar battery is a kind of semiconductor devices for converting light energy into electric energy, production cost low as far as possible and high as far as possible
Energy conversion efficiency be always solar cell industry pursue target.Conventional solar battery negative electrode contact electrode and
Positive electrode contact electrode is located at the tow sides of cell piece；The front of battery is light-receiving surface, front metal electrode main grid line
And the covering of thin grid line will cause the sunlight of a part of incidence to be reflected by metal electrode, and a part of optics is caused to damage
It loses.The area coverage of the front metal electrode of common crystal silicon solar batteries reduces the front covering of metal electrode 7% or so
The energy conversion efficiency for the battery that can directly improve.
" metal perforate (Metal Wrap Through) battery ", abbreviation MWT battery, be a kind of emitter contact electrode and
Base stage contact electrode is all located at the battery of cell backside.In MWT battery structure, positioned at the contact of the emitter of battery light-receiving surface
Electrode is all located at cell backside by silicon substrate navigation inside the body to cell backside, with base stage contact electrode, receives surface emitting pole
The electric current of collection is flowed out by the back side of battery.Compared with conventional solar cell, the conductive main gate line of battery front side is by being located at the back side
Emission electrode replaced, the shading-area of battery front side reduces, and the area for receiving illumination increases, and effectively increases cell piece
Short circuit current, so that cell power conversion efficiency be made to be improved.
Patent document CN107195696A discloses a kind of MWT solar cell module, as shown in Figure 1, the component includes
Multiple MWT solar battery cells 30, each battery unit 30, which has, to be distributed in by the opposite side edge of battery unit shady face
One column front electrode contact point and a column rear electrode contact point, 30 arranged adjacent of battery unit are gone here and there in groups, adjacent battery list
It is connected by welding 31 between each front electrode contact point and each rear electrode contact point of member 30, is located at group string one end
Battery unit 30 front face point and busbar 32 between be connected by welding 31, positioned at group going here and there the battery unit of the other end
Rear electrode contact point and another busbar 32 between be connected by welding 31.
Longer busbar is needed in above-mentioned MWT solar cell module, component power has biggish damage on busbar
Consumption.
Utility model content
In view of this, the present invention provides a kind of MWT solar battery group strings, to solve MWT solar battery group
Longer busbar is needed in part, component power is having the problem of compared with lossy on busbar.
The utility model also provides a kind of MWT solar cell module with above-mentioned MWT solar battery group string.
In order to solve the above technical problems, the utility model uses following technical scheme:
According to the MWT solar battery group string of the utility model first aspect embodiment, including multiple MWT solar batteries
Unit, the opposite side edge of each MWT solar battery cell are respectively equipped with front electrode contact point and contact with rear electrode
Point,
Multiple MWT solar battery cells are arranged in multiple lines and multiple rows, and correspondingly adjacent rows and adjacent column is described
The front electrode contact point of MWT solar battery cell and rear electrode contact point interphase distribution；
The series connection of the MWT solar battery cell of each MWT solar battery cell and row adjacent thereto, and/
Or, the MWT solar battery cell with column adjacent thereto is connected, the MWT solar battery group string is set to form electric current logical
Road；Also, it is being located at the adjacent of the outermost two neighboring MWT solar battery cell of the MWT solar battery group string
Edge forms anode and cathode.
Further, the MWT solar battery cell include the first battery unit and the second battery unit, described first
Battery unit is two, and two first battery units are located at outermost a line and adjacent to each other, two first batteries
Unit only respectively adjacent with one side MWT solar battery cell series connection to distinguish shape in its not formed concatenated opposite side
At anode and cathode,
Two respectively in the MWT solar battery cell adjacent thereto of second battery unit are connected in series.
Further, two first battery units are located at corner.
Further, in each MWT solar battery cell, opposite side edge is respectively equipped with multiple front electrodes
Contact point and multiple rear electrode contact points, multiple front electrode contact point are evenly spaced apart distribution to be formed
One column, and multiple rear electrode contact point is evenly spaced apart distribution to form a column.
Further, in each MWT solar battery cell, the front electrode contact point and the rear electrode
It is corresponded between contact point and spacing is identical.
Further, described to be connected in series through welding or conductive glue connection.
Further, the anode connects the front electrode contact point by welding rod and is formed, and the cathode is connected by welding rod
The rear electrode contact point is formed.
Further, multiple MWT solar battery cells are arranged into 2M row × 2N column, and the M and N are separately
For the integer more than or equal to 2.
Further, MWT solar battery cell described in the 1st row is serially connected between any two,
1st row and the 2nd row, the 3rd row and the 4th row, until between 2M-1 row and 2M row, positioned at two of outermost column
It is serially connected between the MWT solar battery cell,
In addition to the MWT solar battery cell described in the 1st row, among MWT solar battery cell described in every row, in addition to position
Remaining and the adjacent MWT solar energy except being not connected between the 1st column and the MWT solar battery cell of the 2nd column
Battery cells in series,
It is described to be located at the 1st column among MWT solar battery cell described in every row and other than the 1st row and last line
It connects respectively with the MWT solar battery cell of its next line with the MWT solar battery cell of the 2nd column.
Further, MWT solar battery cell described in the 1st row is serially connected between any two,
3rd column and the 4th arrange, until 2N-1 is arranged between 2N column, positioned at two MWT solar-electricities of 2M row
Be serially connected between pool unit, the 2nd column and the 3rd column, until 2N-2 and 2N-1 column between, described in two of the 2nd row
It is serially connected between MWT solar battery cell,
Positioned at the 1st column with 2N column the MWT solar battery cell respectively with the MWT solar energy of its next line
Battery cells in series,
The MWT solar battery cell point other than the 1st column are with 2N column and other than the 1st row, in each column
It does not connect with the MWT solar battery cell of its next line.
Further, the spacing between the two neighboring MWT solar battery cell is less than 0.5mm.
According to the MWT solar cell module of the utility model second aspect embodiment, the MWT including above-described embodiment is too
Positive energy battery pack string.
Further, the MWT solar cell module includes multiple MWT solar battery group strings, multiple described
For MWT solar battery group string in multiple lines and multiple rows and one or more layers arrangement, multiple MWT solar battery groups are series-parallel and converge
Always it is connected in terminal box.
Further, the MWT solar battery group string is the MWT sun that two first battery units are located at corner
Can battery pack string, wherein multiple MWT solar battery group strings in the column arrangement of 2 rows 2, multiple first battery units that
This adjacent center to be located at the MWT solar cell module.
The above-mentioned technical proposal of the utility model one of at least has the advantages that:
According to the MWT solar battery group string of the utility model embodiment, by each MWT solar battery cell and with
The MWT solar battery cell of its adjacent rows is connected, and/or and the MWT solar battery cell series connection of column adjacent thereto carry out shape
At current path, and the anode for organizing string is formed in the outermost two neighboring MWT of MWT solar battery group string too with cathode
It is positive can battery unit neighboring edge, due to the anode of MWT solar battery group string provided by the embodiment of the utility model and negative
Pole is closer, therefore MWT solar battery group string provided by the embodiment of the utility model is applied to solar cell module
In, the usage amount of busbar can be greatly reduced, reduce consumption of the component power on busbar, lifting assembly performance.
Detailed description of the invention
Fig. 1 is the interconnected in series mode of MWT battery unit in conventional MWT battery component；
Fig. 2 is the structural schematic diagram of MWT solar battery sheet；
Fig. 3-a is the back side cutting schematic diagram of MWT solar battery sheet；
Fig. 3-b is the positive cutting schematic diagram of MWT solar battery sheet；
Fig. 4-a is front electrode contact point and the rear electrode contact point transverse direction of two adjacent MWT solar battery cells
Connection type；
Fig. 4-b is the front electrode contact point and rear electrode contact point longitudinal direction of two adjacent MWT solar battery cells
Connection type；
Fig. 5 is the MWT solar battery group string of an embodiment of the present invention；
Fig. 6 is the MWT solar battery group string of another embodiment of the utility model；
Fig. 7 is the MWT solar cell module of an embodiment of the present invention；
Fig. 8 is the MWT solar cell module of another embodiment of the utility model.
Appended drawing reference:
Silicon substrate 1；Emitter 2；Front passivation dielectric layer 3；Passivated reflection reducing layer 4；Front electrode 5；
Through-hole 6；Passivating back dielectric layer 7；Passivation protection layer 8；Front electrode contact point 9；
Rear electrode contact point 10；Back side aluminium layer 11；Local back surface field 12；
MWT solar battery cell 20；First battery unit 21；Second battery unit 22；
Battery unit 30；Welding 31；Busbar 32.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The technical solution of the utility model embodiment is clearly and completely described in the attached drawing of type embodiment.
According to the MWT solar battery group string of the utility model embodiment mainly by multiple MWT solar battery cells 20
It constitutes, MWT solar battery cell 20 can be cut by MWT solar battery sheet and be obtained.
The structure and preparation method of MWT solar battery sheet are specifically introduced first below.
As shown in Fig. 2, MWT solar battery sheet front be followed successively by from inside to outside silicon substrate 1, emitter 2, front it is blunt
Change dielectric layer 3, passivated reflection reducing layer 4, front electrode 5, the back of MWT solar battery sheet are equipped on positive passivated reflection reducing layer 4
Face is passivating back dielectric layer 7, passivation protection layer 8 and back side aluminium layer 11 from inside to outside, and overleaf passivation dielectric layer 7 is lower has office
Portion's back surface field 12 can also be full back surface field, and local back surface field 12 may include distribution multiple and spaced apart, and local back surface field 12 can be with back
Face aluminium layer 11 connects, and is overleaf distributed on aluminium layer 11 as the front electrode contact point 9 of positive contact point and connects as cathode
The rear electrode contact point 10 of contact, electrode contact point can be the circle that diameter is 0.2-10mm or the side of side length 0.2-10mm
Shape can also be other shapes.
Front electrode contact point 9 is connect by perforative through-hole 6 with front electrode 5, and connection front can be filled in through-hole 6
The conductive material of electrode 5 and front electrode contact point 9, the front electrode contact point 9 at the back side and rear electrode contact point 10 can be with
The column where column and rear electrode contact point 10 in the array distribution of multiple lines and multiple rows, and where front electrode contact point 9 are one by one
Accordingly distribute alternately.Front electrode contact point 9 and rear electrode contact point 10 can be formed integrally with 2N column, and N is 1 or more
Integer, for example, N is 2, multiple front electrode contact points 9 are formed as 8 rows, the front at the back side with multiple rear electrode contact points 10
Electrode contact point 9 can be in 8 rows × 2 array column distributions, and rear electrode contact point 10 can be in 8 rows × 2 array column distributions, so that
Front electrode contact point 9 and rear electrode contact point 10 are integrally arranged in 8 row, 4 column array.As shown in Fig. 3-a and Fig. 3-b,
MWT solar battery sheet can be cut into 4 MWT solar battery cells 20, wherein each MWT solar battery cell 20
The back side there are a column front electrode contact point 9 and a column rear electrode contact point 10, a column front electrode contact point 9 and a column
Rear electrode contact point 10 is located at the opposite side edge at 20 back side of MWT solar battery cell, 9 place of front electrode contact point
Column in have 4 front electrode contact points 9, have 4 rear electrode contact points 10 in the column where rear electrode contact point 10.
The front electrode contact point 9 and rear electrode contact point 10 respectively arranged distributes alternately, front electrode contact point 9 in each column
And the point spacing of rear electrode contact point 10 can be equal, the column pitch of front electrode contact point 9 and rear electrode contact point 10
Can not wait, can be divided into wide spacing and two kinds of thin space, and wide spacing and thin space can both alternatively distributed form arrangement,
Wide spacing is 10-100mm, and thin space 1-20mm, thin space is less than wide spacing, for example, wide spacing can be 39mm, thin space
It can be 1.5mm.
Silicon substrate 1 can be p-type silicon matrix 1 or be n-type silicon matrix 1, and positive 2 sheet resistance of emitter is in 20-300ohm/
Sq can be the alternatively distributed selective emitter 2 of high low square resistance, be also possible to identical sheet resistance distribution；The passivation of front and rear surfaces
Dielectric layer can be silica (SiOx), aluminium oxide (AlOx), titanium oxide (TiOx), silicon thin film (polysilicon, micron silicon or non-
Crystal silicon) etc. one or more of lamination composite membranes, thickness can be 1nm-200nm, the passivated reflection reducing layer 4 of front surface and the back side
Passivation protection layer 8 can all be silicon nitride (SiNx), and thickness can be 30nm-200nm, and the back side can be making herbs into wool face, polishing
Face or wet etching face.
Above-mentioned MWT solar battery sheet can be preferably p-type part Al-BSF MWT solar battery sheet, preparation side
Method the following steps are included:
(1) making herbs into wool carries out making herbs into wool to 1 surface of p-type silicon matrix and uses hydrogen-oxygen for example, p-type silicon matrix 1 is placed in texturing slot
Change sodium solution and carry out making herbs into wool to form suede structure, then its surface is cleaned；
(2) emitter 2 is prepared, by phosphorus diffusion or phosphonium ion implantation annealing, for example, 790 DEG C of -850 DEG C of furnaces can be passed through
Pipe carries out phosphorus diffusion, forms front surface n+ emitter 2 in the front surface of p-type silicon matrix 1, square resistance can be with 40-300ohm/
sq；
(3) cell piece after diffusion can be formed through-hole 6 by aperture by way of laser or chemical attack, through-hole 6
Quantity can reasonably select, for example, can be 16, through-hole 6 is arranged in array in n-type silicon matrix 1, and by the electricity after laser
Pond piece is placed in removal back knot and phosphorosilicate glass in wet etching machine；
(4) front passivation dielectric layer 3 is prepared, surface clean first is carried out to cell piece, then by oxidation technology in surface shape
At one layer of silica front passivation dielectric layer 3；
(5) passivating back dielectric layer 7 is prepared, in backside deposition aluminium oxide (AlOx) layer and/or titanium nitride of cell piece
(TiOx) for layer to form passivating back dielectric layer 7, thickness can be 15nm；
(6) passivation protection layer 8 for preparing positive passivated reflection reducing layer 4 and the back side, in the front and back of battery chip architecture
Silicon nitride (SiNx) film is prepared respectively using the passivation protection layer 8 as positive passivated reflection reducing layer 4 and the back side, positive passivation
Anti-reflection layer 4 with a thickness of 70nm, the passivation protection layer 8 at the back side is with a thickness of 120nm；
(7) laser slotting, using aperture or fluting on the surface of the passivation protection layer 8 of laser overleaf, groove width can
Think 20um, line spacing can be 500um；
(8) printing and sintering, the step mainly comprise the steps that
A) grout first uses grout slurry, is filled to through-hole 6, slurry is electrocondution slurry；
B) contact point is printed, while overleaf printing forms front electrode contact point 9 and rear electrode contact point 10；
C) local back surface field 12 is printed, and republishes back side aluminum steel in the backside surface of cell piece, back side aluminum steel need be with back electricity
Extremely direct or internode connection all collects electric current；
D) front electrode 5 is printed, front electrode 5 is finally printed on the front side emitter pole 2 of cell piece；
E) it is sintered, cell piece is sintered, to form back side local back surface field 12 and back side aluminium layer 11, and is made positive
The electrode contact point 10 at electrode contact point 9 and the back side forms contact performance, the reaction shape of silicon substrate 1 of back side aluminum steel and opening area
At alusil alloy and back local back surface field 12, and unslotted region forms back side aluminium layer 11, obtains p-type part Al-BSF MWT too
Positive energy cell piece.
A kind of above-mentioned MWT solar battery sheet can also be preferably the full back surface field MWT solar battery sheet of N-shaped, preparation
Method the following steps are included:
(1) making herbs into wool carries out making herbs into wool to 1 surface of n-type silicon matrix, then cleans to its surface；
(2) emitter 2 is prepared, by boron diffusion or boron ion implantation annealing, is formed just in the front surface of n-type silicon matrix 1
Surface p+emitter 2；
(3) the cell piece back side is carried out wet etching or polishing treatment to go back knot and side to tie, through wet etching or polishing treatment by aperture
Battery chip architecture afterwards forms through-hole 6 by way of laser or chemical attack；
(4) back side silicon thin layer is prepared, prepares ultra-thin medium layer at 1 back side of n-type silicon matrix, and set in ultra-thin medium layer surface
Set polycrystalline silicon thin layer；
(5) back side is adulterated, and carries out selective ion implantation doping in polysilicon thin layer surface, high annealing forms nothing and mixes
Miscellaneous polysilicon coating region and there is DOPOS doped polycrystalline silicon coating region；
(6) front passivation dielectric layer 3, in front deposition of aluminium oxide (AlOx) layer and/or titanium nitride (TiOx) of cell piece
Layer, to form front passivation dielectric layer 3；
(7) passivation protection layer 8 at positive passivated reflection reducing layer 4 and the back side is distinguished in the front and back of battery chip architecture
Silicon nitride (SiNx) thin layer is prepared using the passivation protection layer 8 as positive passivated reflection reducing layer 4 and the back side；
(8) it prints, pours into slurry in through-hole 6, formation is connected with front face electrode at 1 back side of n-type silicon matrix
Front electrode 5 republishes front electrode contact point 9 and rear electrode contact point 10, is sintered and the full back surface field MWT solar energy of N-shaped is made
Cell piece.
MWT solar battery sheet can be prepared by above-mentioned method, the back side of MWT solar battery sheet, which is formed with, is in
The array distribution front electrode contact point 9 and rear electrode contact point 10 of multiple lines and multiple rows can obtain opposite side edge by cutting
It is respectively equipped with the MWT solar battery cell of front electrode contact point 9 Yu rear electrode contact point 10.
The MWT solar battery group string according to the utility model embodiment is specifically described with reference to the accompanying drawing.
According to the MWT solar battery group string of the utility model embodiment, including multiple MWT solar battery cells 20,
The opposite side edge of each MWT solar battery cell 20 is respectively equipped with front electrode contact point and rear electrode contact point, multiple
MWT solar battery cell 20 is arranged in multiple lines and multiple rows, correspondingly the MWT solar battery cell 20 of adjacent rows and adjacent column
Front electrode contact point and rear electrode contact point interphase distribution；Each MWT solar battery cell 20 and with its phase
The MWT solar battery cells 20 of adjacent rows is connected, and/or is connected with the MWT solar battery cells 20 of column adjacent thereto, is made
MWT solar battery group string forms current path；Also, it is being located at the outermost two neighboring of MWT solar battery group string
The neighboring edge of MWT solar battery cell 20 forms anode and cathode.
That is, according to the MWT solar battery group string of the utility model embodiment mainly by multiple MWT solar-electricities
Pool unit 20 is constituted, and MWT solar battery cell 20 can be cut by MWT solar battery sheet and be obtained, each MWT solar energy
The opposite side edge of battery unit 20 is respectively equipped with front electrode contact point and rear electrode contact point, front electrode contact point and back
The quantity of face electrode contact point can be equal, can be correspondingly arranged.Multiple MWT solar battery cells 20 can be in multiple lines and multiple rows
Arrangement, can symmetrically arrange, correspondingly the front electrode of the MWT solar battery cell 20 of adjacent rows and adjacent column connects
Contact and rear electrode contact point interphase distribution, that is to say, in each row, in two neighboring MWT solar battery cell 20
Adjacent both sides edge be respectively front electrode contact point and rear electrode contact point, in each column, neighbouring two MWT
Same side edge is respectively front electrode contact point and rear electrode contact point in solar battery cell 20, is convenient for adjacent cell
Connection between unit can reduce the spacing between battery unit, can be by conducting connecting part by adjacent battery unit
On front electrode contact point connect with rear electrode contact point, to form battery pack string, the battery pack string of formation is more tight
It gathers, loss is low, and it is high-efficient, it is at low cost.Each MWT solar battery cell 20 can be with the MWT solar-electricity of row adjacent thereto
Pool unit 20 connect, and/or and column adjacent thereto MWT solar battery cell 20 connect, make MWT solar battery group string
Form current path；Also, in the outermost two neighboring MWT solar battery cell for being located at MWT solar battery group string
20 neighboring edge forms anode and cathode, due to the anode of MWT solar battery group string provided by the embodiment of the utility model
It is closer with cathode, therefore MWT solar battery group string provided by the embodiment of the utility model is applied to solar battery
In component, the usage amount of busbar can be greatly reduced, reduce consumption of the component power on busbar, lifting assembly performance.
In some embodiments of the utility model, MWT solar battery cell 20 may include the first battery unit 21 and the second electricity
Pool unit 22, that is to say, in multiple MWT solar battery cells 20 include the first battery unit 21 and the second battery unit 22,
First battery unit 21 can be two, two the first battery units 21 be located at outermost a line and adjacent to each other, two first
Battery unit 21 only respectively adjacent with the one side series connection of MWT solar battery cell 20 in its not formed concatenated opposite side point
Not Xing Cheng anode and cathode, distinguish in MWT solar battery cell 20 adjacent thereto two of the second battery unit 22 mutually go here and there
Connection, herein it is adjacent include in the same row left and right it is adjacent, be also included within it is neighbouring in same row, as depicted in fig. 4-a, two
The front electrode contact point of the adjacent MWT solar battery cell 20 in left and right and rear electrode contact point lateral connection, such as Fig. 4-b
Shown, front electrode contact point and the rear electrode contact point of two neighbouring MWT solar battery cells 20 longitudinally connect
It connects.First battery unit 21 and the second battery unit 22 can be contacted becomes a group string, in two the first battery units 21,
One can be used as a group head end for string, another can be used as a group tail end for string, can be by the MWT of group head end of string and tail end too
Positive energy battery unit 20 connects respectively with corresponding conduct piece to be powered to outside.
In other embodiments of the utility model, two the first battery units 21 can be located at corner, convenient for group string
With the connection of terminal box, multiple groups of series windings are easy to when connecing so that electric junction box is located at the center of component rather than edge.
Some embodiments according to the present utility model, in each MWT solar battery cell 20, opposite side edge is respectively equipped with
Multiple front electrode contact points and multiple rear electrode contact points that is to say in opposite two of MWT solar battery cell 20
On edge, an edge is equipped with multiple front electrode contact points, another opposite edge is equipped with multiple rear electrode contact points,
Multiple front electrode contact point is evenly spaced apart distribution to form a column, and multiple rear electrode contact point equably between
Spaced to be arranged with forming one, the quantity of the electrode contact point in specific spacing distance, each column can according to need reasonable choosing
It selects.
Preferably, in each MWT solar battery cell 20, one between front electrode contact point and rear electrode contact point
One is corresponding and spacing is identical, and front electrode contact point can be equal with the quantity of rear electrode contact point in each column, each front
Electrode contact point pair answers a rear electrode contact point.
In some embodiments of the utility model, in each MWT solar battery cell 20, multiple front electrode contacts
Point is by welding or conductive glue connection, so that multiple front electrode contact points in each MWT solar battery cell 20 are in parallel
Connection, multiple rear electrode contact points are by welding or conductive glue connection, so that more in each MWT solar battery cell 20
A rear electrode contact point is connected in parallel.
Preferably, series connection can be by welding or conductive glue connection, can be by two neighboring MWT solar battery cell 20
Front electrode contact point and rear electrode contact point by welding or conductive glue connection, can be by each MWT solar battery
The welding of the multiple front electrode contact points of connection in unit 20 or the company in conducting resinl and each MWT solar battery cell 20
Welding or the conduction glue connection for connecing multiple rear electrode contact points, can also be by two neighboring MWT solar battery cell 20
Front electrode contact point and rear electrode contact point are by welding or conductive glue connection, so that two neighboring MWT solar battery
Unit 20 is connected.MWT solar battery cell 20 can be obtained by being cut by MWT solar battery sheet, each MWT solar energy
The area of battery unit 20 greatly reduces for cell piece, therefore its electric current and resistance are also relatively small, every after series connection
The electric current and series resistance of a string groups of strings are also reduced；MWT solar battery cell 20 up and down between gap it is opposite
It is smaller, it can make full use of the useful space, the distance of welding is small, and without busbar, to reduce power loss, greatly
A group string power is improved, production cost is reduced and spends electric cost；Without expensive metal backing, directly pass through welding or conduction
Glue is interconnected in the same face, is avoided because the problems such as metal backing bring is bent and insulate, improve solar components can
By property, while also greatly reducing cost.
In certain embodiments, anode can connect front electrode contact point by welding rod and be formed, and cathode can be by welding
Item connection rear electrode contact point is formed, can the head end of formation group string and tail end after concatenation MWT solar battery cell
A positive electrode and negative electrode welding rod are respectively welded in unwelded electrode contact point on 20, in unwelded front electricity
A welding rod is welded on the contact point of pole as anode, and a welding rod is welded on unwelded rear electrode contact point as negative
Pole can connect positive electrode and negative electrode with terminal box respectively, for example, can be connected to terminal box later in series and parallel for multiple groups
In.
Some specific embodiments according to the present utility model, multiple MWT solar battery cells 20 can be arranged into 2M row
× 2N column, M and N can be separately the integer more than or equal to 2, and specific line number and columns can be according to the actual needs
It reasonably selects, for example, can be according to selection line number and columns such as group size, output power, the output voltages of string.
In some preferred embodiments, multiple MWT solar battery cells 20 can be arranged into 2M row × 2N column, and M and N can
With separately for the integer more than or equal to 2, the 1st row MWT solar battery cell 20 is serially connected between any two, the 1st row
With the 2nd row, the 3rd row and the 4th row, two MWT solar batteries up to being arranged positioned at outermost between 2M-1 row and 2M row
Be serially connected between unit 20, in addition to the 1st row MWT solar battery cell 20, every row MWT solar battery cell 20 it
In, remaining and the adjacent MWT sun other than being located at and being not connected between the 1st column and the MWT solar battery cell 20 of the 2nd column
Can battery unit 20 connect, and other than the 1st row and last line, among every row MWT solar battery cell 20, be located at the
1 column are connected with the MWT solar battery cell 20 of its next line respectively with the MWT solar battery cell 20 of the 2nd column.
For example, M is 5, N 3, it is that multiple MWT solar battery cells 20 can be arranged into 10 rows × 6 column, such as Fig. 5 institute
Show, the 1st row of one behavior of top side, the 10th row of one behavior of lower side, the rightmost side one is classified as the 1st column, and the leftmost side one is classified as the 6th column.
MWT solar battery cell 20 in 1st row is serially connected between any two, on two neighboring MWT solar battery cell 20
Front electrode contact point and rear electrode contact point are connected in series by welding or conducting resinl, the 1st row and the 2nd row, the 3rd row and the
4 rows, the 5th row and the 6th row, the 7th row and eighth row, up between the 9th row and the 10th row, being located at outermost column, (the 1st is arranged and the 6th
Column) two MWT solar battery cells 20 between be serially connected, can pass through welding or conducting resinl series connection.
In addition to the 1st row MWT solar battery cell 20, among every row MWT solar battery cell 20, in addition to being located at the
1 column the 2nd column MWT solar battery cell 20 between be not connected to except remaining column in MWT solar battery cell 20 with
Adjacent MWT solar battery cell 20 is connected, and that is to say, positioned at the 2nd row to the 10th row and positioned at the 2nd column to the MWT of the 6th column
Solar battery cell 20, two MWT solar battery cells 20 series connection adjacent in a line.
And other than the 1st row and last line (the 10th row), among every row MWT solar battery cell 20, it is located at the 1st
It arranges and connects respectively with the MWT solar battery cell 20 of its next line with the MWT solar battery cell 20 of the 2nd column, that is to say,
MWT solar battery cell 20 in 1st column and the 2nd column, goes here and there positioned at the MWT solar battery cell 20 of the 2nd row and the 3rd row
Connection, connects positioned at the 4th row with the MWT solar battery cell 20 of the 5th row, positioned at the MWT solar battery of the 6th row and the 7th row
Unit 20 is connected, and is connected positioned at eighth row with the MWT solar battery cell 20 of the 9th row, by forming the MWT sun after series connection
It can stacks of cells string.Positioned at the 1st column in and be located at the 10th row MWT solar battery cell 20 can using after welding electrode as
Anode can pass through in the 2nd column and positioned at the MWT solar battery cell 20 of the 10th row using after welding electrode as cathode
Positive electrode and negative electrode are connected in terminal box.
In other preferred embodiments, multiple MWT solar battery cells 20 can be arranged into 2M row × 2N column, M and N
It can be separately the integer more than or equal to 2, the 1st row MWT solar battery cell 20 is serially connected between any two, and the 3rd
Column and the 4th column, until 2N-1 column 2N column between, the phase between two MWT solar battery cells 20 of 2M row
Mutually series connection, the 2nd column and the 3rd column, until 2N-2 and 2N-1 column between, positioned at two MWT solar battery cells of the 2nd row
Be serially connected between 20, positioned at the 1st column with 2N column MWT solar battery cell 20 respectively with the MWT sun of its next line
Energy battery unit 20 is connected, the MWT solar battery list other than the 1st column are with 2N column and other than the 1st row, in each column
Member 20 is connected with the MWT solar battery cell 20 of its next line respectively.
For example, M is 5, N 3, it is that multiple MWT solar battery cells 20 can be arranged into 10 rows × 6 column, such as Fig. 6 institute
Show, the 1st row of one behavior of top side, the 10th row of one behavior of lower side, the rightmost side one is classified as the 1st column, and the leftmost side one is classified as the 6th column.
1st row MWT solar battery cell 20 is serially connected between any two, and two neighboring MWT solar battery cell 20 is gone here and there in the 1st row
Connection, the 3rd column and the 4th arrange, until the 5th arranges between the 6th column and be located between two MWT solar battery cells 20 of the 10th row
It is serially connected, passes through welding or conductive glue connection.2nd column and the 3rd column, until the 4th and the 5th column between, and be located at the 2nd row two
Be serially connected between a MWT solar battery cell 20, positioned at the 1st column with the 6th column MWT solar battery cell 20 respectively with
The MWT solar battery cell 20 of its next line is connected, other than the 1st column are with the 6th column and other than the 1st row, in each column
MWT solar battery cell 20 connect respectively with the MWT solar battery cell 20 of its next line, pass through series connection after formed
MWT solar battery cell group string.Divide positioned at the 10th row and positioned at two MWT solar battery cells 20 of the 1st column and the 2nd column
There is not unwelded electrode contact point, can be welded in the 1st column and positioned at the MWT solar battery cell 20 of the 10th row
It, and can be using after welding electrode as negative positioned at the MWT solar battery cell 20 of the 10th row in the 2nd column as anode after item
Pole is connected in terminal box by positive electrode and negative electrode.
In some specific embodiments, MWT solar battery cell 20 and adjacent MWT solar battery up and down
The all close-packed arrays of unit 20, the spacing between two neighboring MWT solar battery cell 20 can be less than 0.5mm.Too due to MWT
It is positive can relative position between battery unit 20 all forms an entirety by welding is fixed, therefore its spacing can reduce to
Within 0.5mm, compared to the area that conventional group string has saved spacing, group string medium spacing, the utilization rate of light, identical size are increased
The power of situation the following group string significantly improves.
According to the MWT solar battery group string of the utility model embodiment, convenient for a group connection for string, compact spacing is small, drop
Low electric energy loss, the efficiency of raising group string, reduces cost, the problem of string is folded in lamination process is not susceptible to, thus in battery
In the identical situation of element number, it can reduce group whole volume of string, save the dosage of other materials；Too by each MWT
It is positive can battery unit and row adjacent thereto the series connection of MWT solar battery cell, and/or and column adjacent thereto MWT solar energy
Battery cells in series forms current path, and organizes the anode of string and cathode is formed in the outermost of MWT solar battery group string
The neighboring edge of the two neighboring MWT solar battery cell of side, due to MWT solar-electricity provided by the embodiment of the utility model
The anode and cathode of pond group string are closer, therefore by MWT solar battery group string application provided by the embodiment of the utility model
In solar cell module, the usage amount of busbar can be greatly reduced, consumption of the component power on busbar is reduced, mention
Rise assembly property.
The utility model also provides a kind of preparation method of the MWT solar battery group string of above-described embodiment, including following
Step:
Step S1 obtains multiple MWT solar battery cells, the opposite side edge point of each MWT solar battery cell 20
It She You not front electrode contact point and rear electrode contact point.
Step S2 arranges multiple MWT solar battery cells 20 in multiple lines and multiple rows, correspondingly adjacent rows and adjacent column
MWT solar battery cell 20 front electrode contact point and rear electrode contact point interphase distribution.
In step s 2, multiple MWT solar battery cells 20 can arrange in multiple lines and multiple rows, can be more with symmetry arrangement
A MWT solar battery cell 20 is arranged into 2M row × 2N column, and M and N can be separately the integer more than or equal to 2.Phase
Between arrange specifically, in each row, the adjacent both sides edge in two neighboring MWT solar battery cell 20 is respectively front
Electrode contact point and rear electrode contact point, in each column, the same side in neighbouring two MWT solar battery cells 20
Edge is respectively front electrode contact point and rear electrode contact point.During arrangement, two neighboring MWT solar battery cell
Spacing between 20 can be less than 0.5mm, and when connection can be connected MWT solar battery cell 20 by welding or conducting resinl
Connection.
Step S3 goes here and there the MWT solar battery cell 20 of each MWT solar battery cell 20 and row adjacent thereto
Connection, and/or connect with the MWT solar battery cells 20 of column adjacent thereto, so that MWT solar battery group string is formed electric current logical
Road；And in the neighboring edge shape for the outermost two neighboring MWT solar battery cell 20 for being located at MWT solar battery group string
At anode and cathode, MWT solar battery group string is obtained.In the above preparation method, since the utility model embodiment provides
MWT solar battery group string anode and cathode be closer, therefore by MWT solar energy provided by the embodiment of the utility model
Battery pack string is applied in solar cell module, can greatly reduce the usage amount of busbar, reduces component power and is converging
Consumption on item, lifting assembly performance.
Specifically, in step sl, further include choosing MWT solar battery sheet, cut MWT solar battery sheet to obtain
Multiple MWT solar battery cells, for example, can be multiple to obtain by cutting MWT solar battery sheet as shown in Figure 2
MWT solar battery cell.
Preferably, MWT solar battery cell 20 includes the first battery unit 21 and the second battery unit 22, the first battery
Unit 21 is two, and two the first battery units 21 are located at corner, two the first battery units 21 be located at outermost a line and that
This is adjacent, two the first battery units 21 only respectively adjacent with the one side series connection of MWT solar battery cell 20 with its not
Formed concatenated opposite side be respectively formed anode and cathode, the second battery unit 22 distinguish MWT solar battery list adjacent thereto
Member 20 in two be connected in series, herein it is adjacent include in the same row left and right it is adjacent, be also included within neighbouring in same row.
In the preparation process of MWT solar battery group string, in each MWT solar battery cell 20, opposite side edge point
Not She You multiple front electrode contact points and multiple rear electrode contact points, multiple front electrode contact point is evenly spaced apart
Distribution is to form a column, and multiple rear electrode contact point is evenly spaced apart distribution to form a column.Each MWT solar energy
In battery unit 20, is corresponded between front electrode contact point and rear electrode contact point and spacing is identical.
Optionally, in each MWT solar battery cell 20, multiple front electrode contact points pass through welding or conductive glue connection
It connects, multiple rear electrode contact points pass through welding or conductive glue connection.
It can be in group head end of string and a welding electrode on contact point unwelded on the MWT solar battery cell 20 of tail end
As positive or negative pole, in front electrode contact point welding electrode as anode, overleaf electrode contact point welding electrode conduct
Cathode.
Preferably, multiple MWT solar battery cells 20 are arranged into 2M row × 2N column, M and N be separately greater than etc.
In 2 integer.During the preparation process, multiple MWT solar battery cells 20 can be subjected to arrangement connection in the following way:
1st row MWT solar battery cell 20 is serially connected between any two, the 1st row and the 2nd row, the 3rd row and the 4th row, until 2M-1
It between capable and 2M row, is serially connected between two MWT solar battery cells 20 of outermost column, too except the 1st row MWT
The MWT sun except positive energy battery unit 20, among every row MWT solar battery cell 20, in addition to being located at the 1st column with the 2nd column
Remaining connects with adjacent MWT solar battery cell 20 except being not connected between energy battery unit 20, and in addition to the 1st row and most
Afterwards except a line, among every row MWT solar battery cell 20, positioned at the MWT solar battery cell 20 of the 1st column and the 2nd column
It connects respectively with the MWT solar battery cell 20 of its next line.
In other preferred embodiments, multiple MWT solar battery cells 20 are arranged into 2M row × 2N column, and M and N difference are only
It is on the spot the integer more than or equal to 2.It during the preparation process, can also be by multiple MWT solar battery cells 20 according to lower section
Formula carries out arrangement connection: the 1st row MWT solar battery cell 20 is serially connected between any two, the 3rd column with the 4th column, until the
It between 2N-1 column and 2N column, is serially connected between two MWT solar battery cells 20 of 2M row, the 2nd column and the 3rd
It arranges, until being serially connected between two MWT solar battery cells 20 of the 2nd row, position between 2N-2 and 2N-1 column
It connects respectively with the MWT solar battery cell 20 of its next line in the 1st column with the MWT solar battery cell 20 that 2N is arranged,
Other than the 1st column are with 2N column and other than the 1st row, the MWT solar battery cell 20 in each column is next with it respectively
Capable MWT solar battery cell 20 is connected.
The preparation method of MWT solar battery group string according to the present utility model, can prepare in above-described embodiment
MWT solar battery group string reduces electric energy loss convenient for a group connection for string, and the efficiency of raising group string reduces cost；Due to this
The anode and cathode for the MWT solar battery group string that utility model embodiment provides are closer, by the utility model embodiment
The MWT solar battery group string of offer is applied in solar cell module, can greatly reduce the usage amount of busbar, reduces
Consumption of the component power on busbar, lifting assembly performance.
The utility model also provides a kind of MWT solar cell module, including the MWT solar battery in above-described embodiment
Group string, multiple MWT solar battery group strings are in multiple lines and multiple rows and one or more layers arrangement, and multiple MWT solar battery group strings are simultaneously
Join and summarize and is connected in terminal box.
In some embodiments, MWT solar cell module may include multiple MWT solar battery group strings, multiple MWT
Solar battery group string can arrange in multiple lines and multiple rows, can be able to be in multirow with symmetry arrangement, multiple MWT solar battery group strings
Multiple row arrangement in one plane formed one layer, can also be arranged on multilayer planar and form multilayer, carry out lamination, lamination and
After the packaging technologies such as frame up, anode and cathode on group string are aggregated into a positive electricity in component internal in form in parallel respectively
Pole and a negative electrode simultaneously draw and are connected to and connect in terminal box, or can be separately connected after multiple groups of strings using Split type connecting box
It reconnects, for example, two group strings or four group strings.Further, MWT solar battery group string is two the first battery units 21
MWT solar battery group string positioned at corner, multiple MWT solar battery group strings can be in the column arrangement of 2 rows 2, Ke Yiduo
Layer arrangement, and the first battery unit 21 in each MWT solar battery group string is adjacent to each other to be located at the MWT solar battery
The center of component, thus terminal box can be located at MWT solar cell module center rather than edge.
Fig. 7 show the MWT solar battery group being connected into using four MWT solar battery groups series windings as shown in Figure 5
Part, Fig. 8 show the MWT solar cell module being connected into using four MWT solar battery groups series windings as shown in FIG. 6, group
Anode and cathode on string can be aggregated into a positive electrode and a negative electrode simultaneously in component internal in form in parallel respectively
Extraction, which is connected to, to be connect in terminal box.
Keep the string spacing of 2-3mm to prevent the group string in lamination process and group string in general components between group string and group string
Between relative displacement generate variation and lead to folded string phenomenon, since the relative position of every battery unit all forms one by welding fixation
Whole, without using busbar between MWT solar battery group string, therefore the spacing of its battery unit, group string spacing are ok
It is decreased within 0.5mm.
The MWT solar cell module of the utility model, eliminates busbar, reduces spacing, converges on general components
Item and the area of terminal box occupied can be conserved, and reduce the size of component to improve component efficiency.Than normal
Rule component has saved the area of piece spacing, string spacing, increases the utilization rate of light, the power of identical dimensional conditions lower component
It is exactly that component efficiency greatly improves；Have benefited from being sliced design, shorter welding length, the filling so that component is lost without busbar
The factor significantly improves, and further improves component power and efficiency, and terminal box can be located at MWT solar cell module
Center rather than edge.
The utility model also provides a kind of preparation method of the MWT solar cell module in above-described embodiment, including with
Lower step:
Step 11, MWT solar battery group string is chosen, MWT solar battery group string can be multiple, MWT solar-electricity
Pond group string is MWT solar battery group string described in any one of above-described embodiment；
Step 12, by multiple MWT solar battery group strings in multiple lines and multiple rows and one or more layers arrangement；
Step 13, it is packaged after framing up；
Step 14, multiple MWT solar battery groups are series-parallel and summarize and be connected in terminal box, obtain MWT solar energy
Battery component.
Preferably,
In a step 11, MWT solar battery group string is the MWT solar-electricity that two the first battery units 21 are located at corner
Pond group string；
In step 12, multiple MWT solar battery group strings can be arranged, so that more in the column arrangement of 2 rows 2 with multilayer
A first battery unit 21 is adjacent to each other positioned at the center of MWT solar cell module.
That is, in the preparation method of MWT solar cell module, the MWT solar battery group string of selection can be with
For any one of above-described embodiment, MWT solar cell module can be one or more, can be by multiple MWT sun
Energy battery pack string is arranged in multiple lines and multiple rows, can be arranged in one in multiple lines and multiple rows with symmetry arrangement, multiple MWT solar battery group strings
A plane forms one layer, can also be arranged in multiple planes and form multilayer.
Can by lamination, the module encapsulation techniques such as be laminated, frame up component is connected into an entirety, can will be in component
Group string on anode and the welding rod of cathode be aggregated into a positive electrode in component internal in form in parallel respectively and one negative
Electrode, and draw and be connected in terminal box, anode and cathode welding rod can also be directly connected to using new-type wiring, or using seperated
Formula terminal box reconnects after being separately connected two group strings or four group strings, obtains MWT solar cell module.
MWT solar cell module can be prepared by the above method, the MWT solar cell module is without using gold
Belong to electrically-conductive backing plate to be interconnected, the problems such as so as to avoid bending of the metallic conduction substrate under long-time service, insulation, extend
The service life of battery component；The preparation method of the MWT solar cell module is simple, high-quality reliable, without to existing component
Production line is improved too much, low in cost, and process is simple to operation, can be applied directly in large-scale production.
Unless otherwise defined, technical term or scientific term used in the utility model should be the utility model institute
The ordinary meaning that personage in category field with general technical ability is understood." first ", " second " used in the utility model with
And similar word is not offered as any sequence, quantity or importance, and be used only to distinguish different component parts.Together
Sample, the similar word such as "one" or " one " does not indicate that quantity limits yet, but indicates that there are at least one." connection " or
The similar word such as " connected " is not limited to physics or mechanical connection, but may include electrical connection, regardless of
It is direct or indirect."upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when being described object
After absolute position changes, then the relative positional relationship also correspondingly changes.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (14)
1. a kind of MWT solar battery group string, which is characterized in that including multiple MWT solar battery cells, each MWT
The opposite side edge of solar battery cell is respectively equipped with front electrode contact point and rear electrode contact point,
Multiple MWT solar battery cells are arranged in multiple lines and multiple rows, and correspondingly the MWT of adjacent rows and adjacent column is too
The front electrode contact point of positive energy battery unit and rear electrode contact point interphase distribution；
The series connection of the MWT solar battery cell of each MWT solar battery cell and row adjacent thereto, and/or, and
The MWT solar battery cell of column adjacent thereto is connected, and the MWT solar battery group string is made to form current path；And
And in the neighboring edge shape for the outermost two neighboring MWT solar battery cell for being located at the MWT solar battery group string
At anode and cathode.
2. MWT solar battery group string according to claim 1, which is characterized in that
The MWT solar battery cell includes the first battery unit and the second battery unit,
First battery unit be two, two first battery units be located at outermost a line and adjacent to each other, two
First battery unit only connect in its not formed series connection respectively by the MWT solar battery cell adjacent with one side
Opposite side be respectively formed anode and cathode,
Two respectively in the MWT solar battery cell adjacent thereto of second battery unit are connected in series.
3. MWT solar battery group string according to claim 2, which is characterized in that two first battery unit positions
In corner.
4. MWT solar battery group string according to claim 1, which is characterized in that each MWT solar battery list
In member, opposite side edge is respectively equipped with multiple front electrode contact points and multiple rear electrode contact points, multiple institute
State front electrode contact point and be evenly spaced apart distribution to form a column, and multiple rear electrode contact point equably between
It is spaced to be arranged with forming one.
5. MWT solar battery group string according to claim 4, which is characterized in that each MWT solar battery list
In member, is corresponded between the front electrode contact point and the rear electrode contact point and spacing is identical.
6. MWT solar battery group string according to claim 1, which is characterized in that described to be connected in series through welding or conduction
Glue connection.
7. MWT solar battery group string according to claim 2, which is characterized in that described in the anode is connected as welding rod
Front electrode contact point is formed, and the cathode connects the rear electrode contact point by welding rod and formed.
8. MWT solar battery group string according to claim 1, which is characterized in that multiple MWT solar battery lists
Member is arranged into 2M row × 2N column, and the M and N are separately the integer more than or equal to 2.
9. MWT solar battery group string according to claim 8, which is characterized in that
MWT solar battery cell described in 1st row is serially connected between any two,
1st row and the 2nd row, the 3rd row and the 4th row, until between 2M-1 row and 2M row, described in two of outermost column
It is serially connected between MWT solar battery cell, in addition to the MWT solar battery cell described in the 1st row, MWT described in every row is too
It is positive can among battery unit, other than being located at and being not connected between the 1st column and the MWT solar battery cell of the 2nd column its
It is remaining to connect with the adjacent MWT solar battery cell,
It is described to be located at the 1st column and the among MWT solar battery cell described in every row and other than the 1st row and last line
The MWT solar battery cell of 2 column is connected with the MWT solar battery cell of its next line respectively.
10. MWT solar battery group string according to claim 8, which is characterized in that
MWT solar battery cell described in 1st row is serially connected between any two,
3rd column and the 4th arrange, until 2N-1 is arranged between 2N column, positioned at two MWT solar battery lists of 2M row
Be serially connected between member, the 2nd column and the 3rd column, until 2N-2 and 2N-1 column between, positioned at the 2nd row two MWT too
It is positive to be serially connected between battery unit,
Positioned at the 1st column with 2N column the MWT solar battery cell respectively with the MWT solar battery of its next line
Unit series connection,
Other than the 1st column are with 2N column and other than the 1st row, the MWT solar battery cell in each column respectively with
The MWT solar battery cell of its next line is connected.
11. MWT solar battery group string according to claim 8, which is characterized in that the two neighboring MWT solar energy
Spacing between battery unit is less than 0.5mm.
12. a kind of MWT solar cell module, which is characterized in that too including MWT such as of any of claims 1-11
Positive energy battery pack string.
13. MWT solar cell module according to claim 12, which is characterized in that the MWT solar cell module
Including multiple MWT solar battery group strings, multiple MWT solar battery group strings in multiple lines and multiple rows and one or more layers
Arrangement, multiple MWT solar battery groups are series-parallel and summarize and be connected in terminal box.
14. MWT solar cell module according to claim 13, which is characterized in that the MWT solar battery group string is power
Benefit require 3 described in MWT solar battery group string, wherein multiple MWT solar battery group strings in 2 rows 2 column arrangement, it is more
A first battery unit is adjacent to each other positioned at the center of the MWT solar cell module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920437169.1U CN209675302U (en) | 2019-04-02 | 2019-04-02 | MWT solar battery group string and component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920437169.1U CN209675302U (en) | 2019-04-02 | 2019-04-02 | MWT solar battery group string and component |
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| Publication Number | Publication Date |
|---|---|
| CN209675302U true CN209675302U (en) | 2019-11-22 |
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|---|---|---|---|
| CN201920437169.1U Withdrawn - After Issue CN209675302U (en) | 2019-04-02 | 2019-04-02 | MWT solar battery group string and component |
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| Country | Link |
|---|---|
| CN (1) | CN209675302U (en) |
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2019
- 2019-04-02 CN CN201920437169.1U patent/CN209675302U/en not_active Withdrawn - After Issue
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