CN206992121U

CN206992121U - Solar battery sheet

Info

Publication number: CN206992121U
Application number: CN201720737529.0U
Authority: CN
Inventors: 武慧亮; 周国华; 武志强; 聂大小; 武锦琛; 齐雪萌
Original assignee: BAOTOU SHANSHENG NEW ENERGY CO LTD
Current assignee: BAOTOU SHANSHENG NEW ENERGY CO LTD
Priority date: 2017-06-23
Filing date: 2017-06-23
Publication date: 2018-02-09
Anticipated expiration: 2027-06-23

Abstract

The utility model proposes a kind of solar battery sheet, it has a high square resistance region and a low square resistance region, the surface of the solar battery sheet is provided with positive electrode, the positive electrode includes the more thin grid lines being parallel to each other, wherein the arranging density positioned at the thin grid line in the high square resistance region is more than the arranging density of the thin grid line positioned at the low square resistance region.Because the arranging density of the thin grid line positioned at high square resistance region is more than the arranging density of the thin grid line positioned at low square resistance region, can solve EL " haze " defect of cell piece well, simultaneously, diffused sheet resistance can not have to control in reduced levels, be advantageous to be lifted the conversion efficiency of cell piece, because the thin grid line in low square resistance region is less, effectively reduce the unit consumption of positive silver paste, simultaneously less thin grid line can also increase absorption area of the solar battery sheet to light, can further lift conversion efficiency.

Description

Solar battery sheet

Technical field

It the utility model is related to a kind of solar battery sheet.

Background technology

Existing solar battery sheet, the design of its positive electrode, used thin grid line are not examined all using equidistantly design Consider the uneven objective reality of diffused sheet resistance, when pursuing high efficiency lifting diffused sheet resistance, diffused sheet resistance is greatly to a certain extent, electric EL " haze " defect of pond piece will expose, or even the influence for the factors such as producing line diffused sheet resistance is unstable, even if not lifting diffusion Sheet resistance also has Individual cells piece causes EL " haze " defect because sheet resistance is too high.

Above- mentioned information is only used for strengthening the understanding to background of the present utility model disclosed in the background section, because This it can include not forming the information to prior art known to persons of ordinary skill in the art.

The content of the invention

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, there is provided one kind can solve the problem that EL " haze " is lacked Sunken solar battery sheet.

Additional aspect and advantage of the present utility model will be set forth in part in the description, and partly will be from retouching It is apparent from stating, or can be by practice of the present utility model and acquistion.

According to one side of the present utility model, a kind of solar battery sheet, it is low with a high square resistance region and one Sheet resistance region, the surface of the solar battery sheet are provided with positive electrode, and the positive electrode is parallel to each other and equidistantly including more The main gate line of setting and the more thin grid lines being parallel to each other, the thin grid line is vertical with the main gate line, wherein positioned at described The arranging density of the thin grid line in high square resistance region is more than the arranging density of the thin grid line positioned at the low square resistance region, the Gao Fang The area for hindering region is less than the area in the low square resistance region.

According to an embodiment of the present utility model, the quantity of the thin grid line in the high square resistance region is 44, thin grid line Spacing 1.34mm, the thin grid line quantity in the low square resistance region is 59, thin grating spacing 1.60mm,.

According to an embodiment of the present utility model, the area ratio in the high square resistance region and ground sheet resistance region is 4：6.

According to an embodiment of the present utility model, the width of the thin grid line is 0.03-0.06mm.

It is parallel with the main gate line that multistage is provided with according to an embodiment of the present utility model, between adjacent two main gate lines The anti-breaking grid of EL, the anti-breaking grid of EL are set in distance, and the both ends of the anti-breaking grid of the EL connect two adjacent thin grid lines respectively.

According to an embodiment of the present utility model, the thin grid line is that width tapers into gradually with main gate line joint Structure changes.

According to an embodiment of the present utility model, the width of the thin grid line is by 0.065mm gradual changes to being less than or equal to 0.03mm。

According to an embodiment of the present utility model, the quantity of the main gate line is 4, and the high square resistance region is positioned at master Between grid line and close on the edge of solar battery sheet wherein side, the thin grating spacing 1.34mm in the high square resistance region, institute The thin grating spacing for stating low square resistance region is 1.60mm.

According to an embodiment of the present utility model, the main gate line is engraved structure.

According to an embodiment of the present utility model, the both ends of the main gate line are the grading structure of tapering width.

As shown from the above technical solution, it is the advantages of the utility model with good effect：

The utility model solar battery sheet, because the arranging density of the thin grid line positioned at high square resistance region is more than positioned at low The arranging density of the thin grid line in sheet resistance region, can solve EL " haze " defect of cell piece well, meanwhile, diffused sheet resistance can It is furthermore, thin due to low square resistance region in reduced levels, to be advantageous to be lifted the conversion efficiency of cell piece without control Grid line is less, effectively reduces the unit consumption of positive silver paste, while less thin grid line can also increase solar battery sheet to light The absorption area of line, it can further lift conversion efficiency.

Brief description of the drawings

Its example embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage of the present utility model will Become readily apparent from.

Fig. 1 is the schematic diagram of the solar battery sheet of the utility model embodiment；

Fig. 2 is the schematic diagram of the solar battery sheet of another embodiment of the utility model.

In figure：1st, low high square resistance region；2nd, high square resistance region；3rd, thin grid line；4th, line of demarcation；5th, the anti-breaking grid of EL；6th, main grid Line.

Embodiment

Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that this practicality is new The design of example embodiment fully and completely, and will be comprehensively communicated to those skilled in the art by type.Identical in figure Reference represents same or similar structure, thus will omit their detailed description.

As shown in figure 1, the utility model embodiment discloses a kind of solar battery sheet, the solar battery sheet has One high square resistance region 2 and a low square resistance region 1, it is boundary that line of demarcation 4 is shown greatly in the high square resistance region 2 with low square resistance region 1, figure In 1, the region above line of demarcation 4 is that the region of the lower section of 1 line of demarcation of low square resistance region 4 is high square resistance region 2.Obviously, high square resistance The area in region is less than the area in the low square resistance region, wherein the area ratio in the high square resistance region and low square resistance region is substantially For for 4：6.It is provided with positive electrode on the surface of solar battery sheet, the positive electrode includes more and is parallel to each other and spaced set Main gate line 6 and the more thin grid lines 3 being parallel to each other.The quantity of main gate line 6 may generally be 4, and thin grid line 3 hangs down with main gate line 6 Directly, and carefully the width of grid line is 0.03-0.06mm, and the line of demarcation 4 can be a wherein thin grid line.Positioned at high square resistance region The arranging density of 2 thin grid line is more than the arranging density of the thin grid line positioned at low square resistance region 1.Specifically, in this embodiment party In formula, the quantity of the thin grid line 3 in high square resistance region 2 is 44, and thin grating spacing is 1.34mm, the thin grid in low square resistance region 1 Line number amount is 59, thin grating spacing 1.60mm.Along with the area in low square resistance region 1 is bigger, thus in high square resistance region The arranging density of thin grid line is obviously bigger.

Because the arranging density of the thin grid line positioned at high square resistance region 2 is more than the row of the thin grid line positioned at low square resistance region 1 Row density, the utility model embodiment can solve EL " haze " defect of cell piece well, meanwhile, diffused sheet resistance can be with Without controlling the conversion efficiency in reduced levels, being advantageous to lift cell piece, furthermore, due to the thin grid in low square resistance region Line is less, effectively reduces the unit consumption of positive silver paste, while less thin grid line can also increase solar battery sheet to light Absorption area, can further lift conversion efficiency.

In addition, the anti-breaking grid 5 of the multistage EL parallel with main gate line 6, the EL are also provided between adjacent two main gate lines 6 Anti-breaking grid 5 are set in distance, and the both ends of the anti-breaking grid 5 of the EL connect two adjacent thin grid lines 3 respectively.The anti-breaking energy of grid 5 of the EL It is enough to connect two thin grid line 1, the problem of avoiding that in the case of the unexpected fracture of thin grid line 3 EL " haze " can not be eliminated, carry The high stability of solar battery sheet.Thin grid line 3 and the grading structure that the joint of main gate line 6 is that width tapers into, Thin grid line 3 Yu main gate line intersection width can in 0.065mm or so, and away from main gate line direction on be gradually reduced to 0.03mm.By setting the grading structure of thin grid line 3, the conductive aspects of thin grid line can be effectively improved, are advantageous to eliminate EL " mists Group ".Main gate line 6 can be engraved structure, and main gate line both ends are similarly the grading structure that width is gradually reduced, and can so reduce Slurry, increase light absorbing area.

Referring to Fig. 2, in another embodiment of the present utility model, the high square resistance region of the solar battery sheet is positioned at master Between grid line 6 and close on the edge of the wherein side of solar battery sheet, the region shown in wire frame 7 in Fig. 2 is high square resistance area Domain.That is, it is low square resistance region at other three lateral edges of solar battery sheet, now the high square resistance region is thin Grating spacing 1.34mm, the thin grating spacing in the low square resistance region is 1.60mm.High square resistance region thin grid line with its two The thin grid line in the low square resistance region of side does not line up.

Illustrative embodiments of the present utility model are particularly shown and described above.It should be understood that the utility model Disclosed embodiment is not limited to, on the contrary, the utility model is intended to cover included in spirit and scope of the appended claims Interior various modifications and equivalent arrangements.

Claims

1. a kind of solar battery sheet, it is characterised in that the solar battery sheet has a high square resistance region and a low side Region is hindered, the surface of the solar battery sheet is provided with positive electrode, and the positive electrode is parallel to each other and equidistantly set including more The main gate line put and the more thin grid lines being parallel to each other, the thin grid line is vertical with the main gate line, wherein positioned at the height The arranging density of the thin grid line in sheet resistance region is more than the arranging density of the thin grid line positioned at the low square resistance region, the high square resistance The area in region is less than the area in the low square resistance region.

2. solar battery sheet according to claim 1, it is characterised in that the quantity of the thin grid line in the high square resistance region For 44, thin grating spacing 1.34mm, the thin grid line quantity in the low square resistance region is 59, thin grating spacing 1.60mm.

3. solar battery sheet according to claim 1, it is characterised in that the high square resistance region and ground sheet resistance region Area ratio is 4：6.

4. solar battery sheet according to claim 1, it is characterised in that the width of the thin grid line is 0.03- 0.06mm。

5. solar battery sheet according to claim 1, it is characterised in that between adjacent two main gate lines be provided with multistage with The anti-breaking grid of the parallel EL of the main gate line, the anti-breaking grid of EL are set in distance, and the both ends of the anti-breaking grid of the EL connect two respectively Adjacent thin grid line.

6. solar battery sheet according to claim 1, it is characterised in that the thin grid line and main gate line joint are width Spend the grading structure tapered into.

7. solar battery sheet according to claim 6, it is characterised in that the width of the thin grid line by 0.065mm gradually Fade to and be less than or equal to 0.03mm.

8. solar battery sheet according to claim 1, it is characterised in that the quantity of the main gate line is 4, the height Sheet resistance region is between main gate line and closes on the edge of solar battery sheet wherein side, the thin grid line in the high square resistance region Spacing 1.34mm, the thin grating spacing in the low square resistance region is 1.60mm.

9. solar battery sheet according to claim 1, it is characterised in that the main gate line is engraved structure.

10. according to any described solar battery sheet in claim 1 to 9, it is characterised in that the both ends of the main gate line are The grading structure of tapering width.