CN202977433U - Rear main grid line of solar battery piece and solar battery piece - Google Patents
Rear main grid line of solar battery piece and solar battery piece Download PDFInfo
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- CN202977433U CN202977433U CN 201220684071 CN201220684071U CN202977433U CN 202977433 U CN202977433 U CN 202977433U CN 201220684071 CN201220684071 CN 201220684071 CN 201220684071 U CN201220684071 U CN 201220684071U CN 202977433 U CN202977433 U CN 202977433U
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Abstract
The utility model provides a rear main grid line of a solar battery piece and the solar battery piece. The rear main grid line is formed by two or more than two continuous main grid sections, each of the main grid sections is 24-40mm in length, and the total length of the main grid sections is larger than a half of the longitudinal length of a battery piece. According to above design, the main grid sections can be guaranteed to be matched with heating strips on welding equipment in position when the rear main grid line is welded with a welding strip by the welding equipment, and thereby good welding effect is reached.
Description
Technical field
The utility model relates to the photovoltaic cell field, in particular to a kind of solar cell back face main grid line and solar battery sheet.
Background technology
Solar battery sheet becomes electric energy by photovoltaic effect with transform light energy, and what play collection electric charge and electric action in cell piece is the gate line electrode of front and back, and the slurry that gate line electrode is silver-colored simple substance by main material is made by silk screen printing.The gate line electrode of solar battery sheet front and back generally includes 2～3 thicker main grid lines and a lot of thin and close secondary grid line of root, and secondary grid line is mainly collected the photogenerated current that produces in cell piece; The main grid line is connected with secondary grid line, and the electric current that secondary grid line is collected collects output, and as the welded substrate of the interconnecting strip that the adjacent cell sheet is connected (welding).Because silk screen printing silver used slurry cost is higher, especially printing the main grid line, to expend the silver slurry more, causes too. and the production cost that sun can cell piece is higher.
As shown in Figure 1, prior art provides a kind of back side main grid line of solar battery sheet, and this back side main grid line is segmented into discontinuous 4～10 sections, and the length of each segmentation 1 ' is 5～20mm.Although such design has reduced the silver slurry consumption of silk screen printing back side gate line electrode, has time column defects:
(1) length of each segmentation of back side main grid line is shorter, is difficult to welding;
(2) position of each segmentation of back side main grid line often is not complementary with the position of the heater of welding equipment, causes the welding difficulty, causes the phenomenons such as failure welding, rosin joint.
The utility model content
The utility model aims to provide a kind of solar cell back face main grid line and solar battery sheet, occurs the welding difficulty to solve when solar cell back face main grid line adopts the multi-segment structure design, causes the problem of failure welding.
To achieve these goals, according to an aspect of the present utility model, a kind of solar cell back face main grid line is provided, this back side main grid line is comprised of discontinuous two or more main grid sections, the length of each main grid section is 24～40mm, and the length sum of each main grid section is greater than half of cell piece longitudinal length.
Further, the main grid section comprises the first main grid section, the second main grid section and the 3rd main grid section that sets gradually, the length of the second main grid section is 36～40mm, the length of the first main grid section and the 3rd main grid section is 24～28mm, and the spacing distance between the second main grid section and the first main grid section and the 3rd main grid section is 11～15mm.
Further, the main grid section comprises that the length that sets gradually is the first main grid section, the second main grid section, the 3rd main grid section and the 4th main grid section that 24～28mm, spacing distance are 11～15mm.
Further, the main grid section comprises that the length that sets gradually is the first main grid section and the second main grid section that 36～40mm, spacing distance are 11～15mm.
Further, main grid line in the back side is symmetrical with respect to the longitudinal center position of cell piece.
Further, the width of main grid section is 0.1～3mm.
According to another aspect of the present utility model, a kind of solar battery sheet is provided, comprise front gate line electrode and back side gate line electrode, wherein, back side gate line electrode comprises above-mentioned solar cell back face main grid line.
Use solar cell back face main grid line and the solar battery sheet of technical solutions of the utility model, can be complementary preferably with the heater of welding equipment, the length of each main grid section is 24～40mm, can cover at least in the vertical two fire-bars; And the length sum of each main grid section is greater than half of cell piece longitudinal length, thereby guarantees that back side main grid line has covered abundant fire-bar.Therefore, the back side of the present utility model main grid line design can guarantee when using welding equipment that back side main grid line is welded mutually with welding, and mate mutually the fire-bar position of the position of each main grid section and welding equipment, thereby reach good welding effect.
Description of drawings
The Figure of description that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the schematic diagram of the solar cell back face main grid line of prior art;
Fig. 2 shows the schematic diagram according to the solar cell back face main grid line of the utility model the first embodiment;
Fig. 3 shows the position corresponding relation schematic diagram according to the fire-bar of the solar cell back face main grid line of the utility model the first embodiment and DF2 bonding machine;
Fig. 4 shows the schematic diagram according to the solar cell back face main grid line of the utility model the second embodiment;
Fig. 5 shows the position corresponding relation schematic diagram according to the fire-bar of the solar cell back face main grid line of the utility model the second embodiment and DF2 bonding machine;
Fig. 6 shows the schematic diagram according to the solar cell back face main grid line of the utility model the 3rd embodiment;
Fig. 7 shows the position corresponding relation schematic diagram according to the fire-bar of the solar cell back face main grid line of the utility model the 3rd embodiment and DF2 bonding machine.
Embodiment
Below in conjunction with the utility model embodiment and with reference to accompanying drawing, the technical solution of the utility model is described in detail, but following embodiment understands the utility model, and can not limit the utility model, embodiment and the feature in embodiment in the utility model can make up mutually, and the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
In a kind of exemplary embodiment of the present utility model, solar cell back face main grid line is comprised of discontinuous two or more main grid sections, the length of each main grid section is 24～40mm, and the length sum of each main grid section is greater than half of cell piece longitudinal length.The above-mentioned back side of the present utility model main grid line design can be complementary preferably with the heater of welding equipment, the heater of welding equipment generally includes a plurality of fire-bars (Base point) along linear array, the longitudinal length of each fire-bar is 11mm, be spaced apart 2mm between adjacent fire-bar, therefore, the length of each main grid section of above-mentioned design is 24～40mm, can cover at least in the vertical two fire-bars; And, the length sum of each main grid section is greater than half of cell piece longitudinal length, thereby guarantee that back side main grid line has covered abundant fire-bar, therefore, the above-mentioned back side of the present utility model main grid line design can be guaranteed when using welding equipment that back side main grid line is welded mutually with welding, mate mutually the fire-bar position of the position of each main grid section and welding equipment, thereby reach good welding effect.
Below the first embodiment to the four embodiment are back side main grid line designs for 156 * 156mm cell piece.Those skilled in the art should be understood that; at the cell piece for other dimensions; when for example the cell piece of 125 * 125mm carries out back side main grid line design, can similarly design according to the technical scheme of each embodiment of the utility model, belong to equally protection range of the present utility model.
In the first embodiment of the present utility model, as shown in Figures 2 and 3, the main grid section comprises the first main grid section 11, the second main grid section 12 and the 3rd main grid section 13 that sets gradually, wherein, the length of the second main grid section 12 is 38mm, the length of the first main grid section 11 and the 3rd main grid section 13 is 25mm, and the spacing distance between the second main grid section 12 and the first main grid section 11 and the 3rd main grid section 13 is 14.119mm.In above-mentioned the first embodiment, the the second main grid section 12 that is positioned at the centre position can cover three fire-bars 20, be positioned at vertical both sides the first main grid section 11 and the 3rd main grid section 13 all can cover two fire-bars 20, and the spacing distance between each main grid section can be so that the length of a fire-bar 20 be crossed at the interval, and such back side main grid line design can reach good welding effect when the welding welding.
In the second embodiment of the present utility model, as shown in Figure 4 and Figure 5, the main grid section comprises that the length that sets gradually is the first main grid section 11, the second main grid section 12, the 3rd main grid section 13 and the 4th main grid section 14 that 25mm, spacing distance are 14mm.In above-mentioned the second embodiment, the first main grid section 11, the second main grid section 12, the 3rd main grid section 13 and the 4th main grid section 14 can cover respectively two fire-bars 20, and the spacing distance between each main grid section can be so that the length of a fire-bar 20 be crossed at the interval, and such back side main grid line design can reach welding effect preferably when the welding welding.
In the 3rd embodiment of the present utility model, as shown in Figure 6 and Figure 7, the main grid section comprises that the length that sets gradually is the first main grid section 11 and the second main grid section 12 that 38mm, spacing distance are 14mm.In above-mentioned the 3rd embodiment, the first main grid section 11 and the second main grid section 12 can cover respectively 3 fire-bars 20, and the spacing distance between the first main grid section 11 and the second main grid section 12 can be so that the length of 1 fire-bar 20 be crossed at the interval, and such back side main grid line design can reach welding effect preferably when the welding welding.
Preferably, above-mentioned back side main grid line is symmetrical with respect to the longitudinal center position of cell piece.Symmetrical design like this can so that after the welding welding, cell piece is stressed evenly, improve the overall package quality of solar cell.
Preferably, the transverse width of above-mentioned each main grid section is 0.1～3mm.Welding quality when above-mentioned transverse width can either guarantee the electric current collection ability of back side main grid line and weld welding, the silver slurry use amount in the time of can saving silk screen printing again saves production cost.
Fig. 2 extremely the first to the 3rd embodiment of the present utility model shown in Figure 7 only illustrates, and does not consist of restriction of the present utility model.First shown in Fig. 2 to Fig. 7 to the back side main grid line in the 3rd embodiment be all to arrange two on a cell piece, those skilled in the art should be able to know, one, the three even back side of the present utility model main grid lines of more also can be set on a cell piece, can realize the purpose of this utility model equally, reach technique effect of the present utility model.
In a kind of exemplary embodiment of the present utility model, solar battery sheet comprises front gate line electrode and back side gate line electrode, and this back side gate line electrode comprises above-mentioned solar cell back face main grid line.Adopt the solar battery sheet of such back side main grid line design, both can save the silver slurry consumption of printing gate line electrode, can guarantee again to use the welding welding quality of welding equipment, have good prospects for commercial application.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (7)
1. solar cell back face main grid line, it is characterized in that, described back side main grid line is comprised of discontinuous two or more main grid sections, and the length of each described main grid section is 24～40mm, and the length sum of each described main grid section is greater than half of described cell piece longitudinal length.
2. solar cell back face main grid line according to claim 1, it is characterized in that, described main grid section comprises the first main grid section (11), the second main grid section (12) and the 3rd main grid section (13) that sets gradually, the length of described the second main grid section (12) is 36～40mm, the length of described the first main grid section (11) and described the 3rd main grid section (13) is 24～28mm, and the spacing distance between described the second main grid section (12) and described the first main grid section (11) and described the 3rd main grid section (13) is 11～15mm.
3. solar cell back face main grid line according to claim 1, it is characterized in that, described main grid section comprises that the length that sets gradually is the first main grid section (11), the second main grid section (12), the 3rd main grid section (13) and the 4th main grid section (14) that 24～28mm, spacing distance are 11～15mm.
4. solar cell back face main grid line according to claim 1, is characterized in that, described main grid section comprises that the length that sets gradually is the first main grid section (11) and the second main grid section (12) that 36～40mm, spacing distance are 11～15mm.
5. the described solar cell back face of any one main grid line according to claim 1 to 4, is characterized in that, described back side main grid line is symmetrical with respect to the longitudinal center position of described cell piece.
6. solar cell back face main grid line according to claim 1, is characterized in that, the width of described main grid section is 0.1～3mm.
7. a solar battery sheet, comprise front gate line electrode and back side gate line electrode, it is characterized in that, described back side gate line electrode comprises solar cell back face main grid line as described in any one in claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220684071 CN202977433U (en) | 2012-12-12 | 2012-12-12 | Rear main grid line of solar battery piece and solar battery piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220684071 CN202977433U (en) | 2012-12-12 | 2012-12-12 | Rear main grid line of solar battery piece and solar battery piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202977433U true CN202977433U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220684071 Expired - Lifetime CN202977433U (en) | 2012-12-12 | 2012-12-12 | Rear main grid line of solar battery piece and solar battery piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202977433U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449834A (en) * | 2016-10-08 | 2017-02-22 | 苏州阿特斯阳光电力科技有限公司 | Back surface gate line structure of double-sided PERC solar cell piece |
| CN115579407A (en) * | 2022-12-12 | 2023-01-06 | 浙江爱旭太阳能科技有限公司 | Electrode structure, back contact solar cell, cell module and photovoltaic system |
-
2012
- 2012-12-12 CN CN 201220684071 patent/CN202977433U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449834A (en) * | 2016-10-08 | 2017-02-22 | 苏州阿特斯阳光电力科技有限公司 | Back surface gate line structure of double-sided PERC solar cell piece |
| CN106449834B (en) * | 2016-10-08 | 2018-01-23 | 苏州阿特斯阳光电力科技有限公司 | A kind of two-sided PERC solar cell backs face grid line structure |
| CN115579407A (en) * | 2022-12-12 | 2023-01-06 | 浙江爱旭太阳能科技有限公司 | Electrode structure, back contact solar cell, cell module and photovoltaic system |
| CN115579407B (en) * | 2022-12-12 | 2023-03-14 | 浙江爱旭太阳能科技有限公司 | Electrode structure, back contact solar cell, cell module and photovoltaic system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |