CN205911318U - Adopt solar module of lamination design - Google Patents

Abstract

The utility model discloses an adopt solar module of lamination design, including at least two solar cell sections, it leans on with the lower sliced main grid line of a slice solar cell subsides to go up the sliced back electrode of a slice solar cell to connect by department's coating tin cream in subsides. Compared with the prior art, the utility model, replaced need in the past through weld area or busbar go on around the technique connected of solar wafer section, at first, from the material, adopt the tin cream to replace and weld area or busbar, the cost that has significantly reduced simultaneously, connects through the mode of piling up, the electricity that has significantly reduced loss has promoted the holistic generating efficiency of subassembly.

Description

A kind of solar module of employing lamination design

Technical field

This utility model is related to a kind of solar module, particularly a kind of solar battery group of employing lamination design Part.

Background technology

World today's energy shortage, the exploitation for this clean energy resource of solar energy have become as countries in the world utilization The big event of new forms of energy, and the generating efficiency how improving solar battery sheet is the weight of each big photovoltaic Corporation R ＆ D work Point, current new technique solaode, such as perc battery, hit battery, mwt battery etc. in each enterprise research and development test or Person's small lot batch manufacture.

Monolithic solar cell is coupled together and becomes an entirety by the function that solar components will realize generating electricity, Modal connected mode is to be welded to connect using photovoltaic welding belt and busbar at present.As a kind of crystal silicon solar energy battery The wedge shape welding rod (zl201210106034xcn) connecting, the wedge shape welding rod that a kind of crystal-silicon solar cell connects, its feature Be, it includes welding rod wedge-shaped segment and welding rod section, described welding rod wedge-shaped segment and welding rod section link together, welding rod wedge-shaped segment with The front face of crystalline silicon solar cell piece and welding together, the rear-face contact of welding rod section and crystalline silicon solar cell piece is simultaneously And weld together.

But the optical loss of this connected mode is larger, particularly with the high-efficiency battery piece making rapid progress at present, this kind of electricity Pond piece electrical parameter is more excellent, but component system can not play the high advantage of its generating efficiency completely so that the technology of battery-end Renewal can not obtain the lifting of equal proportion at component system end.

Utility model content

Utility model purpose: for crystal silicon solar batteries, its energy gap is constant, after cut, in theory The voltage of every cell piece is constant, and electric current diminishes, then by these after cutting cell pieces series connection after, due to cutting after cell piece Electric current is less than galvanic element piece electric current so that the electricity loss that assembly end encapsulation leads to reduces.The purpose of this utility model is pin To solar battery sheet, including monocrystalline, polycrystalline or quasi- single crystal battery, particularly high electrical parameter, high performance solar-electricity Pond, provide a kind of will be cut using tin cream after the cell piece solar module that stacked of section, can be by the phase of assembly To the cell piece that power ascension at least more than 2% is more excellent to solve prior art optical property, the loss of its system electricity is higher Problem.

Technical scheme: this utility model adopts the following technical scheme that

A kind of solar module of employing lamination design, cuts into slices including at least two pieces of solaodes, and described upper one The back electrode of piece solaode section and under the main gate line of a piece of solaode section recline, and in the place of reclining coating tin cream It is attached.

Using this kind of design, hypotelorism between cell piece, save cost, improve component efficiency.

As optimization, the back electrode in described each solaode section and main gate line are crisscross arranged.

The side cut into slices near solaode as optimization, the back electrode in described each solaode section, and The opposite side that main gate line is cut into slices near solaode.

To tackle the stack design of solaode section, prevent shading surface excessive.

As optimization, the back electrode in described each solaode section and main gate line are flat with solaode section edge The distance of short straight line of the frame in main gate line direction for the row is less than 0.8mm.

If being 0 using frame, can effectively reduce shading-area.

As optimization, described tin cream thickness is 0.15～0.5mm.

Operation principle: after laser cuts along parallel positive and negative electrode position, can be using technology such as printing, sprayings, will The main gate line to cell piece for the solder paste coating and the place that reclines of back electrode, cut into slices further according to solaode in assembly after coating tin cream Typesetting require carry out typesetting after, finally using Infrared Heating or Hot-blast Heating by the way of, by solaode cut into slices carry out It is welded to connect, form assembly.

Beneficial effect: the present invention compared with prior art:

(1) at present the front shading-area of common silicon based cells 7% about, this utility model subsequently adopts solder(ing) paste to weld The mode connecing, therefore the width of electrode is smaller than current conventional batteries piece, current conventional design is 1～1.4mm, and the design is not More than 1mm, anelectrode area reduces 30%～40% relatively, so can reduce cell piece front main grid and bring shading to lose, carry The output of high assembly；

(2) in general components, battery blade spacing is usually 2～3mm, and is carried out by the way of stacking in the application Assembly connects and can omit the spacing of 2～3mm, taking 60 cell piece sections as a example, is connected with 6 cell piece sections, 10 Cell piece assembly, as a solar battery cell, using the present processes, can greatly reduce solar cell blade unit Area occupied, if identical area, then adopts the design of 60, can be cut by 2.5 cell pieces of laying more than the application Piece, increases battery blade unit generated output, and each producer passes through experimental demonstration, reduces cell piece by the typesetting of different assemblies Spacing can make assembly output lifted more than 2%, the components welding of the design cell piece is heap stitch welding, effectively subtracts Lack the spacing of monolithic battery piece in general components, improve transformation efficiency and the power of assembly.

Brief description

Fig. 1 is the solar components structural representation of prior art；

Fig. 2 is structural representation of the present utility model；

Fig. 3 is the design sketch after of the present utility model connection.

Specific embodiment

With reference to specific embodiment, this utility model is further described, such as accompanying drawing 1 is to accompanying drawing 3:

Embodiment

A kind of solar module of employing lamination design, includes at least two pieces of solaodes sections 4, and described upper one The back electrode 3 of piece solaode section 4 and under the main gate line 2 of a piece of solaode section 4 recline, and coat at the place of reclining Tin cream 1 is attached.

Back electrode 3 in described each solaode section 4 and main gate line 2 are crisscross arranged.

Back electrode 3 in described each solaode section 4 is near the side of solaode section 4, and main gate line 2 Opposite side near solaode section 4.

Back electrode 3 in described each solaode section 4 and main gate line 2 and solaode section 4 along parallel to The distance of short straight line of the frame in main gate line 2 direction is less than 0.8mm.

Described tin cream 1 thickness is 0.15～0.5mm.

After laser cuts along parallel positive and negative electrode position, using technology such as printing, sprayings, tin cream 1 can be coated with To solaode section 4 main gate line 2 and the place that reclines of back electrode 3, after coating tin cream 1, cut electricity further according to solar energy in assembly After the typesetting of pond piece 4 requires to carry out typesetting, finally by the way of Infrared Heating or Hot-blast Heating, solaode is cut into slices 4 are welded to connect, and form assembly.

Comparative example

The wedge shape welding rod that a kind of crystal-silicon solar cell connects, it includes welding rod wedge-shaped segment and welding rod section, described weldering Bar wedge-shaped segment and welding rod section link together, the front face of welding rod wedge-shaped segment and crystalline silicon solar cell piece and be welded on Rise, the rear-face contact of welding rod section and crystalline silicon solar cell piece and welding together.

Can be seen that maximum difference between this utility model and comparative example by above-mentioned two embodiment to be:

1st, between the solaode section of the application by the way of stacking, reduced by the typesetting of different assemblies The spacing of cell piece can make the output of assembly lift more than 2%.

2nd, 2, while the solaode section stacking of the application, tin paste layer need to be coated realize in the place of reclining between section Connect, therefore the width of electrode be smaller than current conventional batteries piece, meanwhile, the back electrode in the section of each solaode and master Grid line and solaode cut into slices the distance of short straight line parallel to the frame in main gate line direction for the edge less than 0.8mm.Using side If frame is 0, can effectively reduce shading-area, improve the output of assembly.

This utility model provides a kind of solar module of employing lamination design, implements this technical scheme Method and approach are a lot, and the above is only preferred implementation of the present utility model it is noted that for the art For those of ordinary skill, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these Improvements and modifications also should be regarded as protection domain of the present utility model, in the present embodiment clearly not each ingredient all can use existing Technology is realized.

Claims (5)

1. the solar module of a kind of employing lamination design, include at least two pieces of solaodes cut into slices it is characterised in that: The back electrode of described a piece of solaode section and under the main gate line of a piece of solaode section recline, and at the place that reclines Coating tin cream is attached.

2. employing lamination according to claim 1 design solar module it is characterised in that: each sun described Back electrode in energy battery section and main gate line are crisscross arranged.

3. employing lamination according to claim 1 design solar module it is characterised in that: each sun described Can the side cut into slices near solaode of back electrode in battery section, and main gate line near solaode cut into slices another Side.

4. employing lamination according to claim 1 design solar module it is characterised in that: each sun described Can back electrode in battery section and the section of main gate line and solaode the shortest straight along the frame parallel to main gate line direction Linear distance is less than 0.8mm.

5. employing lamination according to claim 1 design solar module it is characterised in that: described tin cream thickness For 0.15～0.5mm.