WO2012122944A1 - Solar battery assembly and preparation method thereof - Google Patents
Solar battery assembly and preparation method thereof Download PDFInfo
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- WO2012122944A1 WO2012122944A1 PCT/CN2012/072427 CN2012072427W WO2012122944A1 WO 2012122944 A1 WO2012122944 A1 WO 2012122944A1 CN 2012072427 W CN2012072427 W CN 2012072427W WO 2012122944 A1 WO2012122944 A1 WO 2012122944A1
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- solar cell
- type solar
- solar battery
- interconnecting
- strips
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- 238000002360 preparation method Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 230000002708 enhancing effect Effects 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
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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
Definitions
- the present invention relates to a solar cell module and a method of fabricating the same.
- two battery cells of the same type (such as N-type battery chip 1) are usually included in one battery pack, usually using a tinned copper strip.
- the interconnecting strip 102 connects the light-receiving surface (positive electrode) of one of the N-type battery sheets to the backlight surface (negative electrode) of the other N-type battery sheet, and the size of the interconnecting strip connecting the light-receiving surface and the backlight surface is about 1. 8- 2. 5mm.
- the interconnection strip of the light-receiving surface is required to reduce the shading area as much as possible.
- the interconnecting strip of the backlight surface adopts a cross-sectional area with a large cross-sectional area for increasing current collection, and a T-shaped interconnect strip product, that is, tin-plated copper, appears on the market.
- the belt receiving surface is narrow and the backlight surface is wide.
- the T-type interconnect strips have at least the following defects: First, in order to meet the different size requirements of the light-receiving surface and the backlight surface in the fabrication process, a copper substrate cutting method is used to interconnect one piece. The strip is made into a wide and narrow part to meet the two dimensional requirements respectively, which is complicated in processing, and secondly, it will be fragmented during use.
- the narrow and wide portions of the T-shaped interconnecting strip are respectively connected to the light receiving surface of one of the battery sheets and the backlight surface of the adjacent battery sheet, and in the middle of the two battery sheets, that is, the width of the interconnecting strip
- the cross-sectional area at the junction of the narrow two parts is different.
- the degree of relaxation (corresponding to heat rise) and contraction (cold shrinkage) caused by the difference will occur, and the breakage of the interconnecting strip will occur; May break the film at the junction. Due to the above reasons, the T-shaped interconnect strip is complicated in the process of mass processing, and its price is higher than that of the common interconnected strip in the market.
- a solar cell module comprising: a plurality of solar battery cells, wherein: each solar battery cell comprises an N-type solar cell chip (1) and a P-type Solar cell sheet (2), said N type in said solar cell group
- the light-receiving surface of the solar cell sheet (1) is connected to the light-receiving surface of the P-type solar cell sheet (2) through the first interconnecting strips (202, 302), and the N-type solar cell sheets are arranged between adjacent solar cell book sets (1) Arranged adjacent to the P-type solar cell sheet (2), and the backlight surface of the N-type solar cell sheet (1) of each solar cell group passes through the second interconnecting strip (304) and the adjacent another solar energy The backlight surface of the P-type solar cell (2) of the battery pack is connected.
- a method for manufacturing a solar cell module comprising: forming a plurality of solar battery cells, including using a first interconnecting strip (202, 302) a light-receiving surface of an N-type solar cell (1) is connected to a light-receiving surface of a P-type solar cell (2) to form a solar cell; and an adjacent solar cell is an N-type solar cell (1) Arranged adjacent to the P-type solar cell sheet (2) to form a solar cell module, wherein the backlight surface of the N-type solar cell sheet (1) of each solar cell group is passed through the second interconnecting strip (304) The backlight surface of the P-type solar cell (2) of another adjacent solar cell is connected.
- the invention has the beneficial effects that: by reducing the width of the light-receiving surface interconnection strip, that is, reducing the light-shielding area, more sunlight enters the battery to cause photoelectric conversion; increasing the cross-sectional area of the backlight surface interconnection strip to increase the current collection density;
- the composition of the interconnect strips used for the face and backlight faces is chosen differently, ensuring the lowest possible resistance connection so that more current is collected.
- Figure 1 is a connection diagram of a conventional solar cell
- FIG. 2 is a connection manner of connecting solar cells in two interconnected strips according to the present invention
- FIG. 3 is a schematic manner of connecting the solar battery packs by using three interconnecting strips according to the present invention
- N-type solar cell 2. P-type solar cell
- a solar cell module is connected to a battery pack using an N-type solar cell sheet 1 and a P-type solar cell sheet 2, and the battery packs are connected by a series arrangement:
- the light-receiving surface of the N-type solar cell sheet 1 is connected to the light-receiving surface of the P-type solar cell sheet 2 by using the first interconnecting strips 202, 302. Connecting the strips of the light-receiving surface requires reducing the shading area as much as possible.
- the two cell sheets are respectively selected from N-type and P-type single crystal silicon diffusion cells, and the light-receiving surface of the cell sheet is connected by 1 to 3 thin interconnecting strips, preferably 1 to 2, and the width range of the interconnecting strips. Preferably, it is 0.5-1.5 mm, and the interconnecting strip component can increase the content of silver in the composition of the common interconnecting strip.
- the normal range of silver content is 0.1% ⁇ 2%; and depending on the cost, the content is increased to 5%. .
- the width of the first interconnecting strip of the present application is reduced and the thickness is increased relative to a conventional interconnecting strip.
- Conventional interconnect strips have a conventional width of 1.8 to 2.5 mm and a thickness of 0.15 to 0.23 mm.
- the interconnect strip of the present application can reduce the width to 1.5 mm, and the thickness can be increased to 0.25 to 0.3 mm, and a conventional thickness can be used, thereby reducing the resistivity by about 1%.
- the backlight surface of the solar cell (1) is connected to the backlight surface of the P-type solar cell (2) of the adjacent other solar cell through the second interconnection strip (304). It is required to connect the interconnecting strips of the backlight surface to increase the current density collection as a design idea. Therefore, the backlight surface of the adjacent N-type solar cell sheet (1) and the P-type solar cell sheet (2) connected between the battery packs is used with 3 to 10 interconnecting strips, preferably 4 to 10, especially 5
- the total cross-sectional area of the interconnect strip connecting the backlight faces in the current direction is larger than that of the prior art interconnect strips, which increases current collection efficiency and reduces resistance, improves conversion efficiency and output of the solar cell module. power.
- Table 1 below shows the improvement of the technical effect brought about by the difference between the connection manner between the common interconnection strips in the prior art and the interconnection strips in the present application:
- Fig. 4 is a schematic view showing the connection between the solar cell string and the string of the present invention through a bus bar.
- the invention improves the electrical performance of the product and is connected to the T-shaped interconnect strip, which can greatly reduce the processing cost of the interconnect strip and provide a solution for the production of high-efficiency crystalline silicon solar modules.
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Abstract
A solar battery assembly and preparation method thereof. The solar battery assembly comprises: multiple solar battery groups interconnected by means of connection strips. Each solar battery group comprises an N-type solar battery plate (1) and a P-type solar battery plate (2). The illuminated sides of the N-type solar battery plate (1) and of the P-type solar battery plate (2) are connected by multiple, thin first connection strips (302). Adjacent solar battery groups are arranged such that an N-type solar battery plate (1) is next to a P-type solar battery plate (2), and multiple second connection strips (304) connect the non-illuminated sides of the N-type solar battery plate (1) and of the P-type solar battery plate (2) of the two adjacent battery groups. The second connection strips have a larger total cross-sectional area in the direction of electrical currents. The reduction of the light-blocking area of the first connection strips (302) enables more sunlight to enter the battery for photoelectric conversion. The increase of the cross-section area of the second connection strips (304) on the non-illuminated sides raises the density of current collected, thereby further enhancing the photoelectric conversion rate.
Description
说 明 书 Description
一种太阳能电池组件及其制作方法 技术领域 Solar cell module and manufacturing method thereof
本发明涉及一种太阳能电池组件及其制造方法。 The present invention relates to a solar cell module and a method of fabricating the same.
背景技术 Background technique
在现有技术中， 如图 1所示， 对于晶体硅太阳能电池组件而言， 在一个电 池组中通常包括两片同型的电池片 （诸如， N型电池片 1 ) ， 通常采用镀锡铜带 互联条 102将其中一片 N型电池片的受光面 (正极）与另一片 N型电池片的背光 面 （负极） 相连接， 连接受光面与背光面的互联条尺寸相同， 约为 1. 8-2. 5mm。 为了提升光电转换效率， 受光面的互联条会要求尽可能减少遮光面积， 背光面 的互联条为了增加电流收集而采用截面积大的互联条， 市面上出现 T形互联条 产品， 即镀锡铜带受光面部分窄而背光面宽。但是， 相比普通互联条而言， T型 互联条存在至少如下缺陷： 第一， 在本身的制作工艺上， 为了满足受光面和背 光面的不同尺寸要求， 采用铜基体切割的方式将一条互联条制成宽、 窄二部分 以分别满足两种尺寸要求， 这在加工上较为复杂， 第二， 在使用中会破片。 因 为在 2片太阳能电池片串联时， T型互联条的窄、宽二部分分别连接一片电池片 的受光面和相邻电池片的背光面， 在二片电池片中间， 也就是互联条的宽、 窄 二部分交界处的截面积不同， 当发生热、 冷环境变化时， 各自引起的松弛 （对 应热涨） 、 收缩 （冷缩） 程度不同， 会发生互联条的断裂； 并且焊接过程时也 可能在交界位置破片。 由于以上原因， T形互联条在大批量加工下工艺复杂， 其 价格也较市面普通互联条高。 发明内容
本发明所要解决的技术问题是： 提供一种太阳能电池组件， 提高太阳能 电池组件的转换效率和输出功率。 本发明解决其技术问题所采用的至少一个技术方案是： 一种太阳能电 池组件， 包括： 多个太阳能电池组， 其中： 每个太阳能电池组包括一块 N型太 阳能电池片 （1 ) 和一块 P型太阳能电池片 （2) ， 所述太阳能电池组中的 N型 说 In the prior art, as shown in FIG. 1, for a crystalline silicon solar cell module, two battery cells of the same type (such as N-type battery chip 1) are usually included in one battery pack, usually using a tinned copper strip. The interconnecting strip 102 connects the light-receiving surface (positive electrode) of one of the N-type battery sheets to the backlight surface (negative electrode) of the other N-type battery sheet, and the size of the interconnecting strip connecting the light-receiving surface and the backlight surface is about 1. 8- 2. 5mm. In order to improve the photoelectric conversion efficiency, the interconnection strip of the light-receiving surface is required to reduce the shading area as much as possible. The interconnecting strip of the backlight surface adopts a cross-sectional area with a large cross-sectional area for increasing current collection, and a T-shaped interconnect strip product, that is, tin-plated copper, appears on the market. The belt receiving surface is narrow and the backlight surface is wide. However, compared with the conventional interconnect strips, the T-type interconnect strips have at least the following defects: First, in order to meet the different size requirements of the light-receiving surface and the backlight surface in the fabrication process, a copper substrate cutting method is used to interconnect one piece. The strip is made into a wide and narrow part to meet the two dimensional requirements respectively, which is complicated in processing, and secondly, it will be fragmented during use. Because when the two solar cells are connected in series, the narrow and wide portions of the T-shaped interconnecting strip are respectively connected to the light receiving surface of one of the battery sheets and the backlight surface of the adjacent battery sheet, and in the middle of the two battery sheets, that is, the width of the interconnecting strip The cross-sectional area at the junction of the narrow two parts is different. When the heat and cold environment change, the degree of relaxation (corresponding to heat rise) and contraction (cold shrinkage) caused by the difference will occur, and the breakage of the interconnecting strip will occur; May break the film at the junction. Due to the above reasons, the T-shaped interconnect strip is complicated in the process of mass processing, and its price is higher than that of the common interconnected strip in the market. Summary of the invention The technical problem to be solved by the present invention is to provide a solar cell module that improves the conversion efficiency and output power of the solar cell module. At least one technical solution adopted by the present invention to solve the technical problem thereof is: A solar cell module comprising: a plurality of solar battery cells, wherein: each solar battery cell comprises an N-type solar cell chip (1) and a P-type Solar cell sheet (2), said N type in said solar cell group
太阳能电池片 （1 ) 的受光面通过第一互联条 （202， 302 ) 与 P型太阳能电池片 (2) 的受光面相连接， 相邻的太阳能电池书组之间按 N型太阳能电池片 （1 ) 与 P型太阳能电池片 （2) 相邻的方式进行排列， 并且每个太阳能电池组的 N型太 阳能电池片 （1 ) 的背光面通过第二互联条 （304 ) 与相邻的另一个太阳能电池 组的 P型太阳能电池片 （2) 的背光面相连接。 The light-receiving surface of the solar cell sheet (1) is connected to the light-receiving surface of the P-type solar cell sheet (2) through the first interconnecting strips (202, 302), and the N-type solar cell sheets are arranged between adjacent solar cell book sets (1) Arranged adjacent to the P-type solar cell sheet (2), and the backlight surface of the N-type solar cell sheet (1) of each solar cell group passes through the second interconnecting strip (304) and the adjacent another solar energy The backlight surface of the P-type solar cell (2) of the battery pack is connected.
本发明解决其技术问题所采用的至少另一个技术方案是： 提出了一 种用于制造太阳能电池组件的方法， 包括： 形成多个太阳能电池组， 包 括用第一互联条 （202， 302 ) 将一块 N型太阳能电池片 （1 ) 的受光面与 一块 P型太阳能电池片 （2 ) 的受光面相连接来形成一个太阳能电池组； 以及将相邻的太阳能电池组以 N型太阳能电池片 （1 ) 与 P型太阳能电池 片 （2 ) 相邻的方式进行排列以形成太阳能电池组件， 其中， 将每个太阳 能电池组的 N型太阳能电池片 （1 ) 的背光面通过第二互联条 （304 ) 与相 邻的另一个太阳能电池组的 P型太阳能电池片 （2 ) 的背光面相连接。 本发明的有益效果是： 通过减少受光面互联条的宽度即减少遮光面积， 使更多的太阳光进入电池而发生光电转换； 增加背光面互联条的截面积来增大 电流收集密度， ； 受光面和背光面采用的互联条的成分选取不同， 保证尽可能 低的电阻连接方式以使更多的电流被收集。
说 明 书 At least another technical solution adopted by the present invention to solve the technical problems thereof is: A method for manufacturing a solar cell module, comprising: forming a plurality of solar battery cells, including using a first interconnecting strip (202, 302) a light-receiving surface of an N-type solar cell (1) is connected to a light-receiving surface of a P-type solar cell (2) to form a solar cell; and an adjacent solar cell is an N-type solar cell (1) Arranged adjacent to the P-type solar cell sheet (2) to form a solar cell module, wherein the backlight surface of the N-type solar cell sheet (1) of each solar cell group is passed through the second interconnecting strip (304) The backlight surface of the P-type solar cell (2) of another adjacent solar cell is connected. The invention has the beneficial effects that: by reducing the width of the light-receiving surface interconnection strip, that is, reducing the light-shielding area, more sunlight enters the battery to cause photoelectric conversion; increasing the cross-sectional area of the backlight surface interconnection strip to increase the current collection density; The composition of the interconnect strips used for the face and backlight faces is chosen differently, ensuring the lowest possible resistance connection so that more current is collected. Instruction manual
附图说明 DRAWINGS
下面结合附图和实施例对本发明进一步说明； The present invention will be further described below in conjunction with the accompanying drawings and embodiments;
图 1是常规太阳电池的连接方式； Figure 1 is a connection diagram of a conventional solar cell;
图 2是本发明的以 2根互联条进行太阳能电池组内连接的连接方式； 图 3是本发明的以 3根互联条进行太阳能电池组间的串接方式； 2 is a connection manner of connecting solar cells in two interconnected strips according to the present invention; FIG. 3 is a schematic manner of connecting the solar battery packs by using three interconnecting strips according to the present invention;
图 4是本发明的太阳能电池串与串的连接方式； 4 is a connection manner of a solar cell string and a string of the present invention;
图中， 1. N型太阳能电池片， 2. P型太阳能电池片 In the figure, 1. N-type solar cell, 2. P-type solar cell
具体实施方式 detailed description
如图 2和 3所示， 一种太阳能电池组件， 采用一块 N型太阳能电池片 1和 一块 P型太阳能电池片 2连接为一个电池组， 电池组间通过串联的排布方式进 行连接： As shown in Figures 2 and 3, a solar cell module is connected to a battery pack using an N-type solar cell sheet 1 and a P-type solar cell sheet 2, and the battery packs are connected by a series arrangement:
a) 电池组内连接工序： 使用第一互联条 202、 302将采用 N型太阳能电池 片 1的受光面与 P型太阳能电池片 2的受光面相连接。 连接受光面的互联条要 求尽可能减少遮光面积。 2片电池片分别选取 N型和 P型单晶硅扩散的电池片， 且电池片的受光面采用 1~3根细的互联条连接， 较佳地为 1〜2根， 互联条的宽 度范围较佳地为 0.5-1.5mm， 且互联条成分可在普通互联条的成分内增加银的 含量， 银含量的正常范围在 0.1%〜2%； 并可取决于成本考虑， 增加含量到 5%。 相对于普通互联条， 本申请的第一互联条的宽度减少且厚度增加。 普通互 联条的常规宽度为 1.8〜2.5mm， 厚度在 0.15〜0.23mm。 本申请的互联条可将宽 度减少到 1.5mm， 而厚度则可增加到 0.25〜0.3mm，也可使用常规厚度， 由此， 将电阻率减少约 1%。 a) Connection process in the battery pack: The light-receiving surface of the N-type solar cell sheet 1 is connected to the light-receiving surface of the P-type solar cell sheet 2 by using the first interconnecting strips 202, 302. Connecting the strips of the light-receiving surface requires reducing the shading area as much as possible. The two cell sheets are respectively selected from N-type and P-type single crystal silicon diffusion cells, and the light-receiving surface of the cell sheet is connected by 1 to 3 thin interconnecting strips, preferably 1 to 2, and the width range of the interconnecting strips. Preferably, it is 0.5-1.5 mm, and the interconnecting strip component can increase the content of silver in the composition of the common interconnecting strip. The normal range of silver content is 0.1%~2%; and depending on the cost, the content is increased to 5%. . The width of the first interconnecting strip of the present application is reduced and the thickness is increased relative to a conventional interconnecting strip. Conventional interconnect strips have a conventional width of 1.8 to 2.5 mm and a thickness of 0.15 to 0.23 mm. The interconnect strip of the present application can reduce the width to 1.5 mm, and the thickness can be increased to 0.25 to 0.3 mm, and a conventional thickness can be used, thereby reducing the resistivity by about 1%.
b) 串接工序： 在完成电池组内连接之后，将相邻电池组之间按 N型太阳能 电池片与 P型太阳能电池片相邻的方式进行排列， 并将每个太阳能电池组的 N
说 明 书 b) Cascading process: After completing the connection in the battery pack, the adjacent battery packs are arranged in the manner that the N-type solar cell sheets are adjacent to the P-type solar cell sheets, and the N of each solar battery pack is arranged. Instruction manual
型太阳能电池片 （1 ) 的背光面通过第二互联条 （304 ) 与相邻的另一个太阳能 电池组的 P型太阳能电池片 （2 ) 的背光面相连接。 要求连接背光面的互联条以 增加电流密度收集为设计思路。 因此， 连接电池组间的相邻 N型太阳能电池片 ( 1 )与 P型太阳能电池片（2 ) 的背光面使用 3〜10根互联条， 较佳地使用 4〜 10根， 尤其可以使用 5根， 连接背光面的互联条在电流方向上的总截面积相对 于现有技术的互联条而言更大， 这增加了电流收集效率且降低了电阻， 提高了 太阳能电池组件的转换效率及输出功率。 The backlight surface of the solar cell (1) is connected to the backlight surface of the P-type solar cell (2) of the adjacent other solar cell through the second interconnection strip (304). It is required to connect the interconnecting strips of the backlight surface to increase the current density collection as a design idea. Therefore, the backlight surface of the adjacent N-type solar cell sheet (1) and the P-type solar cell sheet (2) connected between the battery packs is used with 3 to 10 interconnecting strips, preferably 4 to 10, especially 5 The total cross-sectional area of the interconnect strip connecting the backlight faces in the current direction is larger than that of the prior art interconnect strips, which increases current collection efficiency and reduces resistance, improves conversion efficiency and output of the solar cell module. power.
下表 1 示出了现有技术中的普通互联条与本申请中的互联条的连接方式的 区别所带来的技术效果的提升： Table 1 below shows the improvement of the technical effect brought about by the difference between the connection manner between the common interconnection strips in the prior art and the interconnection strips in the present application:
表 1 : 普通互联条与本申请中的互联条的技术效果对比 Table 1: Comparison of technical effects between common interconnect strips and interconnect strips in this application
光电转换， 另一方面背光面采用截面积大的互联条， 降低连接电阻， 增加电流 收集密度， 使更多太阳光发生光电转换且被更多的收集， 进一歩提高光电转换 效率。 图 4是本发明的太阳能电池串与串之间通过汇流条进行连接的示意图。 On the other hand, the backlight surface adopts a interconnecting strip with a large cross-sectional area to reduce the connection resistance and increase the current collection density, so that more sunlight is photoelectrically converted and more collected, and the photoelectric conversion efficiency is further improved. Fig. 4 is a schematic view showing the connection between the solar cell string and the string of the present invention through a bus bar.
该发明在提高产品电性能的同时， 较 T形互联条连接， 可以大大降低互联 条加工成本， 为高效率的晶硅太阳能组件的制作提供一套解决方案。
The invention improves the electrical performance of the product and is connected to the T-shaped interconnect strip, which can greatly reduce the processing cost of the interconnect strip and provide a solution for the production of high-efficiency crystalline silicon solar modules.
Claims
1、 一种太阳能电池组件， 其特征在于包括： A solar cell module characterized by comprising:
多个太阳能电池组， 其中： 每个太阳能电池组包括一块 N型太阳能电池片 ( 1 ) 和一块 P型太阳能电池片 （2 ) ， 所述太阳能电池组中的 N型太阳能电池 片 （1 ) 的受光面通过第一互联条 （202， 302 ) 与 P型太阳能电池片 （2 ) 的受 光面相连接， a plurality of solar cells, wherein: each solar cell comprises an N-type solar cell (1) and a P-type solar cell (2), and the N-type solar cell (1) in the solar cell The light receiving surface is connected to the light receiving surface of the P type solar cell sheet (2) through the first interconnecting strip (202, 302),
相邻的太阳能电池组之间按 N型太阳能电池片（ 1 )与 P型太阳能电池片（ 2 ) 相邻的方式进行排列， 并且每个太阳能电池组的 N型太阳能电池片（1 )的背光 面通过第二互联条（304 )与相邻的另一个太阳能电池组的 P型太阳能电池片（2 ) 的背光面相连接。 Adjacent solar cells are arranged adjacent to the N-type solar cell (1) and the P-type solar cell (2), and the backlight of the N-type solar cell (1) of each solar cell The face is connected to the backlight face of the P-type solar cell (2) of another adjacent solar cell by a second interconnecting strip (304).
2、 根据权利要求 1所述的太阳能电池组件， 其特征在于： 所述第一互联条 较细， 且所述第二互联条在电流方向上的总截面积较大。 2. The solar cell module according to claim 1, wherein: said first interconnecting strip is thinner, and said second interconnecting strip has a larger total cross-sectional area in a current direction.
3、 根据权利要求 1所述的太阳能电池组件， 其特征在于： 所述第一互联条 的数量为 1〜3根， 宽度为 0. 5〜 1. 5匪， 厚度为 0. 25〜0. 3mm，所述第二互联条 的数量为 3〜 10根。 5 〜 0. 25〜0. The thickness of the first interconnecting strip is 1 to 3, the width is 0. 5~ 1. 5匪, the thickness is 0. 25~0. 3mm, the number of the second interconnecting strips is 3~10.
4、 根据权利要求 3所述的太阳能电池组件， 其特征在于： 所述第一互联条 的数量为 1〜2根， 所述第二互联条的数量为 4〜10根。 The solar cell module according to claim 3, wherein the number of the first interconnecting strips is 1 to 2, and the number of the second interconnecting strips is 4 to 10.
5、 根据权利要求 3所述的太阳能电池组件， 其特征在于： 所述第一互联条 的数量为 1〜2根， 所述第二互联条的数量为 5根。 权 利 要 求 书 The solar cell module according to claim 3, wherein the number of the first interconnecting strips is 1 to 2, and the number of the second interconnecting strips is 5. Claim
6、一种用于制造太阳能电池组件的方法， 其特征在于包括： 6. A method for manufacturing a solar cell module, comprising:
形成多个太阳能电池组， 包括用第一互联条 （202， 302 ) 将一块 N型太阳 能电池片 （1 ) 的受光面与一块 P型太阳能电池片 （2 ) 的受光面相连接来形成 一个太阳能电池组； 以及 Forming a plurality of solar battery cells, comprising: connecting a light receiving surface of an N-type solar cell sheet (1) to a light receiving surface of a P-type solar cell sheet (2) by using a first interconnecting strip (202, 302) to form a solar cell Group;
将相邻的太阳能电池组以 N型太阳能电池片（1 )与 P型太阳能电池片（2 ) 相邻的方式进行排列以形成太阳能电池组件， 其中， 将每个太阳能电池组的 N 型太阳能电池片 （1 ) 的背光面通过第二互联条 （304 ) 与相邻的另一个太阳能 电池组的 P型太阳能电池片 （2 ) 的背光面相连接。 Adjacent solar cells are arranged adjacent to the P-type solar cell sheets (2) to form a solar cell module, wherein the N-type solar cells of each solar cell group are arranged The backlight surface of the sheet (1) is connected to the backlight surface of the P-type solar cell sheet (2) of another adjacent solar battery cell through the second interconnection strip (304).
7、 根据权利要求 6所述的方法， 其特征在于： 所述第一互联条较细， 且所 述第二互联条在电流方向上的总截面积较大。 7. The method according to claim 6, wherein: the first interconnecting strip is thinner, and the total cross-sectional area of the second interconnecting strip in the current direction is larger.
8、 根据权利要求 6 所述的方法， 其特征在于： 所述第一互联条的数量为 1〜3根， 宽度为 0. 5〜1. 5mm , 厚度为 0. 25〜0. 3mm , 所述第二互联条的数量为 3〜10根。 And the thickness of the first interconnecting strip is 0. 5~1. 5mm , and the thickness is 0. 25~0. 3mm , according to the method of the present invention. The number of the second interconnecting strips is 3 to 10.
9、 根据权利要求 8 所述的方法， 其特征在于： 所述第一互联条的数量为 1〜2根， 所述第二互联条的数量为 4〜10根。 9. The method according to claim 8, wherein: the number of the first interconnecting strips is 1 to 2, and the number of the second interconnecting strips is 4 to 10.
10、 根据权利要求 8 所述的方法， 其特征在于： 所述第一互联条的数量为 1〜2根， 所述第二互联条的数量为 5根。 10. The method according to claim 8, wherein: the number of the first interconnecting strips is 1 to 2, and the number of the second interconnecting strips is 5.
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| CN 201110062284 CN102148275A (en) | 2011-03-16 | 2011-03-16 | Solar battery component |
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| CN103367533B (en) * | 2012-04-09 | 2016-02-24 | 中电电气(上海)太阳能科技有限公司 | A kind of photovoltaic module interconnecting strip optimizes method of attachment |
| CN103372728B (en) * | 2012-04-11 | 2016-09-21 | 无锡嘉瑞光伏有限公司 | The wedge shape welding rod that a kind of crystal-silicon solar cell connects |
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