A kind of solar module with high-photoelectric transformation efficiency
Technical field
The present invention relates to technical field of solar, more particularly to a kind of solar module.
Background technology
Because energy and environmental problem, solar cell is by public attention.Solar cell is a kind of using photoelectric effect
Obtain the power generator of photoelectric power.In solar cells, generated respectively in p-n junction semiconductor substrate is formed by n-type electricity
The electronics and hole that pole and p-type electrode are collected.Solar cell connects to form solar module, the sun by interconnection piece
Energy battery module can raise voltage in a manner of series-connected solar cells, also can raise electricity in a manner of solar cell in parallel
Stream, so as to improve the output power of solar module.The prior art usually by conductive material be electrically connected it is different too
Positive energy battery, it is conductive for solar cell of the distribution of electrodes in light-receiving surface and shady face both sides to realize it in parallel or series
When material is electrically connected solar cell, it will usually which shaded portions light area reduces light-receiving area, and then reduces photoelectricity and turn
Change efficiency, and conductive material is electrically connected when realizing series connection and usually requires turning operation, and technique is cumbersome.
The content of the invention
The object of the present invention is to provide a kind of solar module with high-photoelectric transformation efficiency, to improve conduction material
Material is electrically connected the problem of reduction photoelectric conversion efficiency occurred during solar cell and cumbersome series connection overturning.
To achieve the above object, the present invention uses following technical scheme:
A kind of solar module with high-photoelectric transformation efficiency, including:Solar panel, solar panel
On protective substrate, the frame of buffer layer and solar panel between solar panel and protective substrate, solar energy
Solar panel includes first kind solar cell and the second class solar cell, first kind solar cell and the second class solar-electricity
Pond light-receiving surface front electrode polarity refers to structure on the contrary, first kind front electrode of solar battery one side forms first electrode, and second
Class solar cell forms second electrode slot structure with one side front electrode similar in first kind solar cell, and first electrode refers to
Structure is complementary with second electrode slot structure, but first electrode refers to structure and refers to length more than second electrode slot structure flute length, and the first kind is too
The first electrode of positive energy battery refers to structure and the second electrode slot structure of the second class solar cell is electrically connected.
Preferably, bus bar electrode is formed on first kind solar cell and the second class front electrode of solar battery,
First electrode refers to and second electrode slot is formed on bus bar electrode.
Preferably, solar panel is formed side by side by n solar cell, wherein first kind solar cell and second
Class solar cell is staggered, and n is more than or equal to 3.
Optionally, solar panel is formed side by side by n solar cell, wherein first kind solar cell and second
Class solar cell is staggered, and n is more than or equal to 3, and first solar cell is first kind solar cell, second sun
Energy battery is the second class solar cell, and first solar energy is referred to second solar cell by front electrode first electrode
It is electrical connected with second electrode slot, the 3rd solar cell is first kind solar cell, second solar energy and the 3rd
Solar cell makes back electrode be connected by conductive material electric connection, is cycled to realize n solar energy as the cycle
Battery is connected in series.
Preferably, first kind front electrode of solar battery forms the opposite side formation first that first electrode refers to structure one side
Electrode slot structure, the second class solar cell one side front electrode mutually remote with first kind solar cell form second electrode and refer to
Structure, second electrode refers to structure and the complementation of first electrode slot structure, but second electrode refers to structure and refers to length more than first electrode slot knot
Flute is long.
Preferably, first kind solar cell first electrode refers to that structure dinger thickness and first electrode slot structure slot are thick to be less than the
The thickness of a kind of solar cell bus bar electrode, the second class solar cell second electrode refer to structure dinger thickness and second electrode
The thick thickness for being less than the second class solar cell bus bar electrode of slot structure slot.
Optionally, solar panel is formed side by side by n solar cell, wherein first kind solar cell and second
Class solar cell is staggered, and n is more than or equal to 3, and two neighboring front electrode of solar battery refers to knot by first electrode
Structure is electrical connected with second electrode slot structure or second electrode refers to structure and is electrical connected with first electrode slot structure, two neighboring
Same type of back electrode of solar cell is electrically connected by conductive material, the solar cell of two neighboring not type
Back electrode forms multiple first kind solar cells first solar battery group of formation in parallel, multiple second classes without electric connection
Solar cell is in parallel to form the second solar battery group, and the first solar battery group is connected with the second solar battery group
Battery structure.
Optionally, solar panel is formed side by side by 3 solar cells, wherein first kind solar cell and second
Class solar cell is staggered, and two neighboring front electrode of solar battery refers to structure and second electrode by first electrode
Slot structure is electrical connected or second electrode refers to structure and is electrical connected with first electrode slot structure, two same type of solar energy
Battery back electrode is electrically connected by conductive material, and intermediate back electrode of solar cell does not connect electrically with both sides solar cell
It connects, realizes that two same type of solar cells are in parallel.
Another solar module, including:Solar panel, the protective substrate on solar panel, the sun
The frame of buffer layer and solar panel between energy solar panel and protective substrate, which is characterized in that solar panel
Including first kind solar cell and the second class solar cell, first kind solar cell and the second class solar cell light
Face front electrode polarity is identical, and first kind front electrode of solar battery one side forms first electrode and refers to structure, the second class sun
Can one side front electrode similar in battery and first kind solar cell form second electrode slot structure, first electrode refer to structure with
Second electrode slot structure is complementary, but first electrode refers to structure and refers to length more than second electrode slot structure flute length, first kind solar-electricity
The first electrode in pond refers to structure and the second electrode slot structure of the second class solar cell is electrically connected.
Compared with prior art, the present invention has the following advantages:
(1) first kind solar cell with the second class solar cell light-receiving surface front electrode polarity on the contrary, without turning over
Turn operation positive and negative electrode can be realized to be connected, neatly realize the series connection of battery.
(2) front electrode electrode finger is electrically connected with slot electrode, saves conductive material, while does not have to light-receiving surface any
Masking, does not interfere with light-receiving area, into without reducing optoelectronic transformation efficiency.
(3) first kind solar cell and the second class solar cell light-receiving surface front electrode polarity are on the contrary, front electrode
Electrode finger is electrically connected with slot electrode, can neatly be realized the series connection and parallel connection of battery circuit, and then be improved output power.
Description of the drawings
Fig. 1 is structure diagram at the solar module solar panel of the embodiment of the present invention 1;
Fig. 2 is structure diagram at the solar module solar panel of the embodiment of the present invention 2;
Fig. 3 is equivalent circuit diagram at the solar module solar panel of the embodiment of the present invention 2;
Fig. 4 is structure diagram at the solar module solar panel of the embodiment of the present invention 3;
Fig. 5 is structure diagram at the solar module solar panel of the embodiment of the present invention 4;
Fig. 6 is equivalent circuit diagram at the solar module solar panel of the embodiment of the present invention 4.
Specific embodiment
Below in conjunction with the accompanying drawings and the present invention is introduced in embodiment, and embodiment is only limitted to explain the present invention,
It does not limit the invention.
A kind of solar module with high-photoelectric transformation efficiency, including:Solar panel, solar panel
On protective substrate, the frame of buffer layer and solar panel between solar panel and protective substrate.Wherein, protect
Shield substrate includes the tempered glass for showing high-transmission rate and outstanding destruction-proof function, and tempered glass can include low iron tempering
The inside of protective substrate in order to improve the dispersion effect of light, can be embossed by glass;Buffer layer be placed in solar panel with
Between protective substrate, the corrosion caused by the infiltration of moisture is prevented, and protect solar panel from impact, buffering
Layer can include the material of such as ethene-vinyl acetate (EVA), and buffer layer can be further formed under solar panel
Portion.Frame is the metal frame for including aluminium, stainless steel or iron, and frame surrounding wraps up solar panel, protective substrate and the sun
Buffer layer between energy solar panel and protective substrate.
First kind solar cell and the second class solar battery structure wrap successively from top to bottom in solar panel
Include front electrode layer, photoelectric conversion layer, back electrode layer can also form bus bar electrode on front electrode layer.Wherein, electrode
Material can be metals or their alloys such as molybdenum, aluminium, nickel, copper, chromium;The material of photoelectric conversion layer can be copper indium gallium selenide (CIGS),
The thin-film solar cells materials such as non-crystalline silicon (a-Si), cadmium antimonide (CdTe).
Following embodiment emphasis describes the solar cell plate part of solar module.
Embodiment 1
As shown in Figure 1, solar panel 1 includes a first kind solar cell 11 and a second class solar-electricity
Pond 12,11 battery light-receiving surface front electrode 111 of first kind solar energy are n-type electrode, and 12 light-receiving surface of the second class solar cell is just
Face electrode 121 is p-type electrode, and bus bar electrode 112, the second class solar-electricity are formed on first kind front electrode of solar battery
Bus bar electrode 122 is formed on the front electrode of pond, 11 bus bar electrode of first kind solar cell, 112 one side forms first electrode
Refer to structure 1121,11 first electrode of first kind solar cell refers to 1121 dinger thickness of structure and converges less than first kind solar cell 11
The thickness of strip electrode 112, the second class solar cell 12 and one side bus bar electrode 122 similar in first kind solar cell 11
1222 structure of second electrode slot is formed, 12 second electrode slot structure of the second class solar cell, 1222 slot is thick to be less than the second class sun
The thickness of energy 11 bus bar electrode 122 of battery, first electrode refer to structure 1121 and 1222 complementation of second electrode slot structure, but first
Electrode finger structure 1121 refers to length and is more than 1222 flute length of second electrode slot structure, to separate first kind solar cell 11 and second
Class solar cell 12, the first electrode of first kind solar cell 11 refer to the of 1121 and second class solar cell 12 of structure
Two electrode slot structures 1222 are electrically connected, and realize two solar cell series connection.
Embodiment 2
As shown in Fig. 2 and Fig. 3, solar panel 1 includes two first kind solar cells 11 and two the second classes too
Positive energy battery 12 is formed side by side, and first kind solar cell 11 is staggered with the second class solar cell 12, the first kind sun
11 battery light-receiving surface front electrodes 111 of energy are n-type electrode, and 12 light-receiving surface front electrode 121 of the second class solar cell is p-type electricity
Pole forms bus bar electrode 112 on first kind front electrode of solar battery, is formed on the second class front electrode of solar battery
Bus bar electrode 122,11 bus bar electrode of first kind solar cell, 112 one side form first electrode and refer to structure 1121, and first
11 first electrode of class solar cell refers to the thickness that 1121 dinger thickness of structure is less than 11 bus bar electrode 112 of first kind solar cell
Degree, the second class solar cell 12 form second electrode with one side bus bar electrode 122 similar in first kind solar cell 11
1222 structure of slot, 12 second electrode slot structure of the second class solar cell, 1222 slot thickness are converged less than the second class solar cell 11
The thickness of strip electrode 122, first electrode refers to structure 1121 and 1222 complementation of second electrode slot structure, but first electrode refers to structure
1121, which refer to length, is more than 1222 flute length of second electrode slot structure, to separate 11 and second class solar-electricity of first kind solar cell
Pond 12, the first electrode of first kind solar cell 11 refer to the second electrode slot knot of 1121 and second class solar cell 12 of structure
Structure 1222 is electrically connected.First solar cell is first kind solar cell 11, and second solar cell is the second class
Solar cell 12, first solar energy and second solar cell by front electrode first electrode refer to 1121 and second electricity
Pole slot is electrical connected 1222, and the 3rd solar cell is first kind solar cell 11, and second solar energy and the 3rd are too
Positive energy battery makes back electrode be connected by conductive material electric connection, and the 4th solar cell is the second class solar cell
12, the 3rd solar energy refers to 1121 and the electrical phase of second electrode slot with the 4th solar cell by front electrode first electrode
Connect 1222, realize four solar cells series connection.
Embodiment 3
As shown in Figure 4, solar panel 1 includes two first kind solar cells 11 and a second class solar-electricity
Pond 12 is formed side by side, and first kind solar cell 11 is staggered with the second class solar cell 12,11 electricity of first kind solar energy
Pond light-receiving surface front electrode 111 is n-type electrode, and 12 light-receiving surface front electrode 121 of the second class solar cell is p-type electrode, the
Bus bar electrode 112 is formed on a kind of front electrode of solar battery, confluence is formed on the second class front electrode of solar battery
Strip electrode 122,11 bus bar electrode of first kind solar cell, 112 one side form first electrode and refer to structure 1121, opposite side shape
Into first electrode slot structure 1122,11 first electrode of first kind solar cell refers to 1121 dinger thickness of structure and first electrode slot knot
The thick thickness for being less than 11 bus bar electrode 112 of first kind solar cell of 1122 slot of structure, the second class solar cell 12 and first
One side bus bar electrode 122 similar in class solar cell 11 forms 1222 structure of second electrode slot, and opposite side forms the second electricity
Pole refers to structure 1221, and 12 second electrode of the second class solar cell refers to 1122 slot of 1221 dinger thickness of structure and second electrode slot structure
Thickness is less than the thickness of 12 bus bar electrode 122 of the second class solar cell, and first electrode refers to structure 1121 and second electrode slot knot
Structure 1222 is complementary, but first electrode refers to structure 1121 and refers to length more than 1222 flute length of second electrode slot structure, and second electrode refers to structure
1221 is complementary with first electrode slot structure 1122, but second electrode refer to structure refer to it is long be more than first electrode slot structure flute length, to
Separate first kind solar cell 11 and the second class solar cell 12.The first two front electrode of solar battery passes through the first electricity
Pole refers to structure 1121 and is electrical connected with second electrode slot structure 1222, and second solar cell leads to the 3rd solar cell
It crosses second electrode and refers to structure 1221 and be electrical connected with first electrode slot structure 1122, first solar cell and the 3rd sun
Energy battery back electrode is electrically connected by conductive material, realizes that two first kind solar cells are in parallel, i.e. first solar energy
Battery is in parallel with the 3rd solar cell.
Embodiment 4
As shown in Fig. 5 and Fig. 6, solar panel 1 includes two first kind solar cells 11 and two the second classes too
Positive energy battery 12 is formed side by side, and first kind solar cell 11 is staggered with the second class solar cell 12, the first kind sun
11 battery light-receiving surface front electrodes 111 of energy are n-type electrode, and 12 light-receiving surface front electrode 121 of the second class solar cell is p-type electricity
Pole forms bus bar electrode 112 on first kind front electrode of solar battery, is formed on the second class front electrode of solar battery
Bus bar electrode 122,11 bus bar electrode of first kind solar cell, 112 one side form first electrode and refer to structure 1121, relatively
Side forms first electrode slot structure 1122, and 11 first electrode of first kind solar cell refers to 1121 dinger thickness of structure and first electrode
The thick thickness for being less than 11 bus bar electrode 112 of first kind solar cell of 1122 slot of slot structure, the second class solar cell 12 with
One side bus bar electrode 122 similar in first kind solar cell 11 forms 1222 structure of second electrode slot, and opposite side forms the
Two electrode finger structures 1221,12 second electrode of the second class solar cell refer to 1221 dinger thickness of structure and second electrode slot structure
The thick thickness for being less than 12 bus bar electrode 122 of the second class solar cell of 1122 slots, first electrode refer to 1121 and second electricity of structure
Pole slot structure 1222 is complementary, but first electrode refers to structure 1121 and refers to length more than 1222 flute length of second electrode slot structure, second electrode
It is complementary with first electrode slot structure 1122 to refer to structure 1221, but second electrode refers to structure and refers to length more than first electrode slot structure slot
It is long, to separate 11 and second class solar cell 12 of first kind solar cell.The first two solar cell and latter two
Front electrode of solar battery refers to structure 1121 by first electrode and is electrical connected with second electrode slot structure 1222, second
Solar cell refers to structure 1221 and 1122 electrical phase of first electrode slot structure with the 3rd solar cell by second electrode
Even, two neighboring same type of back electrode of solar cell is electrically connected by conductive material, two neighboring not type
Back electrode of solar cell without electric connection, realize the first solar-electricity that two first kind solar cells in parallel are formed
Pond group is connected with the second solar battery group that two the second class solar cells in parallel are formed.
Solar cell circuit connecting mode of the present invention is flexible, and embodiment only lists restricted manner, also much as
The circuit connection of basis amplification and the circuit connection of other modes.In addition, what embodiment provided is first kind solar-electricity
Pond and the second opposite polarity embodiment of class solar cell light-receiving surface front electrode, first kind solar cell of the present invention and the
Two class solar cell light-receiving surface front electrode polarity can also be identical, if solar panel is by two solar cells at this time
It is formed, two solar cell parallel connections can also amplify out a variety of circuit connecting modes accordingly, can also first kind solar cell
With the second class opposite polarity solar battery group of solar cell light-receiving surface front electrode and first kind solar cell and the
The identical solar battery group of two class solar cell light-receiving surface front electrode polarity is used simultaneously.