WO2017190398A1 - 太阳能电池组件及其制备方法 - Google Patents

太阳能电池组件及其制备方法 Download PDF

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Publication number
WO2017190398A1
WO2017190398A1 PCT/CN2016/084943 CN2016084943W WO2017190398A1 WO 2017190398 A1 WO2017190398 A1 WO 2017190398A1 CN 2016084943 W CN2016084943 W CN 2016084943W WO 2017190398 A1 WO2017190398 A1 WO 2017190398A1
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Prior art keywords
solar cell
battery
cell module
connecting member
region
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PCT/CN2016/084943
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English (en)
French (fr)
Inventor
张雨军
戴珍林
陈辉
吴正同
于松坤
黄强
郑加镇
Original Assignee
协鑫集成科技股份有限公司
协鑫集成科技（苏州）有限公司
苏州协鑫集成科技工业应用研究院有限公司
张家港协鑫集成科技有限公司
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Publication of WO2017190398A1 publication Critical patent/WO2017190398A1/zh

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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
    • 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
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • 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
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to the field of solar cell technologies, and in particular, to a solar cell module and a method of fabricating the same.
  • the main way of utilizing solar energy is to convert the received light energy into electrical energy output through a solar cell module.
  • the conventional solar cell module is assembled by a plurality of solar cells (or photovoltaic cells) and arranged in a square matrix. Large area battery pack. Among them, the solar cell absorbs light energy, and the accumulation of the opposite charge occurs at both ends of the battery, that is, the "photo-generated voltage" is generated, which is the "photovoltaic effect". Under the action of the photovoltaic effect, the two ends of the solar cell generate an electromotive force. Thereby converting light energy into electrical energy.
  • a conventional solar cell module typically includes a plurality of battery strings, each of which includes a plurality of solar cells in series.
  • the circuit of the battery string in which it is located is interrupted, resulting in failure, resulting in the whole Power loss of solar modules.
  • a solar cell module comprising a battery pack, the battery pack comprising a plurality of coupled battery sheets, the battery sheets being arranged in a row in a row;
  • each of the solar cell modules of the present invention is a separate unit, even due to physical or elastic, as compared with the conventional solar cell module.
  • the change causes a cell to break or the two adjacent cells to separate, and the current can flow to the adjacent and parallel cells without adversely affecting the remaining cells, which is beneficial to reducing the entire solar cell module. Power loss.
  • the battery sheet is a battery cutting sheet, and the battery cutting sheet is cut from a solar battery sheet.
  • all of the cells in the same column share the connector.
  • all of the cells in the same column are located on the same side of the connector.
  • the connecting member is in the form of a sheet, and the inside of the connecting member is provided with a hollow hole for communicating the both side surfaces of the connecting member.
  • the connecting member has an elongated shape, and the edge of the long side of the connecting member is disposed with a plurality of spaced-apart notches, and the notch is not in communication with the hollowing hole.
  • the battery sheet includes a front electrode and a back electrode
  • the connecting member includes a first surface connected to the front electrode and a second surface connected to the back electrode, wherein the first surface is provided with a first connecting region and a first non-connecting region which are alternately arranged.
  • the second surface is provided with a second connection area and a second non-connection area which are alternately connected, and a projected area of the first non-connection area on the first surface is greater than or equal to the second connection area The projected area on the first surface;
  • the front electrode is connected to the first connection region, and the back electrode is connected to the second connection region.
  • the projection of the first connection region on the first surface is a first projection
  • the projection of the second connection region on the first surface is a second projection
  • the first projection The interval from the adjacent second projection is 1 mm to 20 mm.
  • the front surface electrode and the back surface electrode both extend along the length direction of the battery sheet, and the first non-connection area and the second non-connection area are respectively provided with a first barrier a solder layer and a second barrier solder layer.
  • the front electrode and the back electrode both extend along a length direction of the cell sheet, and the front electrode is provided with a third connection region and a third non-connection region which are alternately arranged, The fourth electrode connection region and the fourth non-connection region are alternately arranged on the back electrode;
  • the third connection area is connected to the first connection area
  • the fourth connection area is connected to the second connection area
  • the third non-connection area and the fourth non-connection area are respectively provided with a A three-barrier solder layer and a fourth barrier solder layer.
  • a method for preparing a solar cell module including the following steps:
  • each of the solar cell modules of the present invention is compared with the conventional solar cell module.
  • Each cell is a separate unit. Even if a cell breaks due to physical or elastic changes or two adjacent cells are separated, current can flow to the adjacent and parallel cells without the remaining cells.
  • the film has an adverse effect, which is beneficial to reduce the power loss of the entire solar cell module.
  • the operation of coupling the plurality of battery sheets to the plurality of connectors is:
  • a plurality of the battery sheets are arranged in columns to obtain a battery array, and then the connecting member and the battery column are alternately coupled.
  • FIG. 1 is a front elevational view of a solar cell module of an embodiment
  • FIG. 2 is a circuit diagram of a solar cell module of an embodiment
  • FIG. 3 is a schematic view showing a light-facing surface of a battery sheet according to an embodiment
  • FIG. 4 is a schematic view of a backlight surface of a battery sheet of an embodiment
  • Figure 5 is a schematic view of a connector of an embodiment
  • Figure 6 is a schematic view of a connector of another embodiment
  • FIG. 7 is a schematic view showing a series connection between adjacent battery sheets in the row direction according to an embodiment
  • Figure 8 is a schematic diagram showing parallel connection between adjacent cells in the column direction of an embodiment
  • FIG. 9 is a schematic view showing a light-facing surface of a battery sheet of another embodiment.
  • FIG. 10 is a schematic view of a backlight surface of a battery sheet of another embodiment
  • FIG. 11 is a schematic view showing a series connection between adjacent battery sheets in the row direction according to another embodiment
  • Figure 12 is a side elevational view of the connector of another embodiment
  • FIG. 13 is a schematic diagram of a first connection area and a second connection area projected on a first surface of an embodiment
  • Figure 14 is a side elevational view of the front electrode of the other embodiment, the connector, and the back electrode of the adjacent battery dicing sheet;
  • Fig. 15 is a flow chart showing a method of manufacturing a solar cell module according to an embodiment.
  • a solar cell module 100 of an embodiment includes two battery packs 110 connected in series.
  • Each battery pack 110 includes 33*6 coupled battery sheets 112.
  • the battery sheets 112 are arranged in a row in a row.
  • the battery sheet 112 of the present embodiment is a battery dicing sheet, and specifically, it is formed by cutting a solar cell sheet into five equal parts. It should be noted that, the present invention is not limited to the above five-division cutting, and the solar cell sheet can be arbitrarily divided or unequally cut to obtain a plurality of battery cutting sheets, and pick from them. A suitable battery cutting piece is selected for typesetting, and the solar cell module of the present invention is obtained after performing series and parallel connection.
  • FIG. 1 It can be seen from FIG. 1 that a plurality of battery cells 112 having the same area in the solar cell module 100 of the present embodiment are arranged neatly and tightly, so that the efficiency of the cell sheet 112 is uniform and the matching is better, thereby improving the entire solar cell. The efficiency of the components.
  • the battery sheet 112 of the present embodiment includes a light-emitting surface for absorbing radiation and a backlight surface disposed opposite to the light-facing surface.
  • seven light-emitting surfaces of the battery sheet 112 are provided with front electrodes 114 arranged at equal intervals along the longitudinal direction of the battery sheets 112, and the front electrodes 114 are located at the long edge positions of the battery sheets 112. Therefore, when two adjacent battery sheets 112 in the row direction are connected in series, it is possible to avoid excessive occlusion of the battery sheet 112 by the solar illumination, thereby avoiding reducing the utilization of solar light by the solar battery module.
  • backlight electrodes 116 are arranged on the backlight surface of the battery sheet 112 at equal intervals along the longitudinal direction of the battery sheet 112.
  • the projection of the back surface electrode 116 on the light-facing surface of the battery sheet 112 is located between the projections of the adjacent two front surface electrodes 114 on the light-emitting surface of the battery sheet 112.
  • the buffer space of the connector is made larger, so that the back electrode 116 is disposed at a non-edge position of the battery sheet 112.
  • the connecting member 120 of the present embodiment is an elastic connecting member and is in the form of a sheet and an elongated strip, and is preferably selected from any one of a copper foil, an aluminum foil, a tin-plated copper foil, and a copper-aluminum alloy foil.
  • the interior of the connector 120 is provided with a hollow hole 121 for communicating the surfaces of both sides of the connector 120.
  • the hollow hole 121 of the present embodiment has a parallelogram in cross section, and the plurality of hollow holes 121 are regularly arranged along the longitudinal direction of the connector 120, thereby providing a stress buffering effect and reducing the adverse effect of stress release on the solar cell module.
  • the cross-section of the hollow hole 121 is not limited to the parallelogram of the present embodiment, and may be other shapes. The position and arrangement thereof may also be changed according to specific requirements, and may all function as a stress buffer.
  • the connector of the present invention is not limited to the above embodiment, and in order to provide a better stress buffering function, in addition to providing a hollow hole in the interior of the connector, a notch may be provided at the edge of the connector.
  • the connecting member 220 of another embodiment is provided with a plurality of regularly arranged hollow holes 221, and further, a plurality of spaced-apart notches 222 are disposed at the edge positions of the long sides thereof, and the notches 222 are The hollow holes 221 are not connected. Specifically, the notch 222 is located in the adjacent two hollow holes 221 between. Therefore, when the two long sides of the connecting member 220 are respectively coupled to the battery sheets 112 on both sides thereof, a better stress buffering effect can be exerted, and the adverse effect of the stress release on the solar cell module can be reduced.
  • the solar cell module 100 three adjacent cell sheets 112 in the row direction are connected in series by a connector 120. Both end edges of the long sides of the connector 120 are connected to the front electrode 114 and the back electrode 116 of the battery sheet 112, respectively. Since the front electrode 114 and the back electrode 116 are designed to be crossed, the connectors 120 are respectively cross-connected to the battery sheets 112 on both sides. Thus, a buffer zone is formed between the adjacent front electrodes 114 and between the adjacent back electrodes 116, which improves the elasticity of the solar cell module 100, reduces the risk of cracking of the solar cell module 100, and makes it difficult to break the gate lobes.
  • adjacent cell sheets 112 in the column direction are connected in parallel by a connector 120.
  • all of the battery sheets 112 in the same column are located on the same side of the connector 120. Since the connector 120 is located on the back side of the battery sheet 112, the battery sheet 112 is not blocked to avoid loss.
  • all of the battery sheets 112 in the same column share the connector 120.
  • a plurality of shorter connectors 120 may be selected to connect the adjacent battery cells 112 in the column direction in parallel.
  • the battery sheet and the connector of the present invention are not limited to the above embodiments, and may be other forms.
  • the front electrode and the back electrode of the battery sheet may each extend along the length of the battery sheet, and the connecting member may be a strip-shaped soldering strip, and the inside thereof may not be provided with a hollow hole or a notch.
  • the battery sheet 212 of the solar cell module of another embodiment includes a front surface electrode 214 and a back surface electrode 216 extending along the length direction of the battery sheet 212 .
  • the front electrode 214 and the back electrode 216 are respectively located at the edge positions of the opposite ends of the battery sheet 212.
  • two adjacent battery sheets 212 in the row direction are overlapped in series by the connecting member 300.
  • the width of the back surface electrode 216 of the left side electric piece 212 is slightly larger than the width of the front surface electrode 214 of the right side battery piece 212
  • the width of the connecting piece 300 is smaller than the width of the front surface electrode 214 of the right side cell piece 212. The positional displacement of the adjacent two battery sheets 212 at the time of placement is prevented to expose the front surface electrode 214 or the connecting member 300, thereby reducing the illumination area.
  • the connector 300 of the present embodiment includes a first surface 310 connected to the front surface electrode 214 and a second surface 320 connected to the back surface electrode 216.
  • the first surface 310 is provided with a first connection region 311 and a first non-connection region 312 which are alternately arranged. Front electrode 214 and first connection area 311 connection.
  • the second surface 320 is provided with a second connection region 321 and a second non-connection region 322 which are alternately arranged.
  • the back surface electrode 216 is connected to the second connection region 321 .
  • the projection of the first connection region 311 of the present embodiment on the first surface 310 is a first projection 3112
  • the projection of the second connection region 321 on the first surface 310 is a second projection 3212
  • the first projection 3112 is
  • the interval between adjacent second projections 3212 is any value between 1 mm and 20 mm.
  • a buffer zone is formed between the connection regions of the front electrode 214 and the back electrode 216 to improve the elasticity of the solar cell module, reduce the risk of cracking of the solar cell module, and it is not easy to break the gate lobes.
  • it is not limited to this, but it can also be the interval of other values.
  • the projected area of the first non-connected region 312 on the first surface 310 is greater than the projected area of the second connected region 321 on the first surface 310.
  • first barrier solder layer 313 and a second barrier solder layer 323 are respectively disposed on the first non-connection region 312 and the second non-connection region 322.
  • the first barrier solder layer 313 and the second barrier solder layer 323 of the present embodiment are ink coating layers.
  • the first barrier solder layer 313 and the second barrier solder layer 323 may also be other coatings that function as a barrier solder.
  • the first barrier soldering layer 313 and the second barrier soldering layer 323 are used for blocking soldering, and also have a certain elasticity, which can play a buffering role.
  • the elasticity of the solar cell module of the present embodiment is improved, the necessary elastic deformation can be achieved to resist the deformation requirement of external or internal internal stress, the risk of cracking of the solar cell module is reduced, and the crack of the gate is not easily broken, which is advantageous for application.
  • the first barrier solder layer 313 and the second barrier solder layer 323 are disposed on the connecting member 300 for blocking soldering and providing a certain elasticity. It should be noted that a barrier solder layer may be provided on the front electrode and the back electrode of the battery sheet located on both sides of the connector.
  • the front surface electrode 410 of the battery sheet of another embodiment is provided with a third connection region 411 and a third non-connection region 412 which are alternately arranged.
  • the rear electrode 420 is provided with a fourth connection region 421 and a fourth non-connection region 422 which are alternately arranged.
  • the third connection region 411 and the fourth connection region 421 are both connected to the connector 430.
  • the third non-joining region 412 and the fourth non-joining region 422 are respectively provided with a third barrier solder layer 413 and a fourth barrier solder layer 423.
  • the third barrier solder layer 413 and the fourth barrier solder layer of this embodiment 423 is a self-adhesive layer.
  • each cell in the solar cell module of the present invention is compared with the conventional solar cell module.
  • the conventional solar cell module even if a cell breaks due to physical or elastic changes or the adjacent two cells are separated, current can flow to the adjacent and parallel cells without adversely affecting the remaining cells. It is beneficial to reduce the power loss of the entire solar cell module.
  • the present invention also provides a method for preparing a solar cell module, as shown in FIG. 15, comprising the following steps:
  • the battery cells of step S10 are connected to a plurality of connecting members to obtain a battery pack.
  • the battery cells are arranged in a row in a row; in the row direction, two adjacent battery cells are connected by a connecting member.
  • the stack is connected in series; in the column direction, two adjacent cells are connected in parallel by a connecting member.
  • the operation of coupling a plurality of battery sheets to a plurality of connecting members is such that a plurality of battery sheets are arranged in columns to obtain a battery array, and then the connecting members and the battery columns are alternately coupled.
  • the backlight side of the cell is facing up.
  • each of the solar cell modules of the present invention is compared with the conventional solar cell module.
  • Each cell is a separate unit. Even if a cell breaks due to physical or elastic changes or two adjacent cells are separated, current can flow to the adjacent and parallel cells without the remaining cells.
  • the film has an adverse effect, which is beneficial to reduce the power loss of the entire solar cell module.
  • the design of the present invention also eliminates the basic concept of the traditional string unit, adopts the concept of full automation of the panel interconnection, the whole plate has only the positive pole and the negative pole, and has no other process and operation action requirements, thereby improving the automation process of the component and Operation has also fundamentally increased the production capacity of the product.
  • a highly automated development of solar modules will be achieved, reducing the performance and quality risks associated with manual intervention. Increase the power of the module by 10%, and at the same time speed up the production capacity, paving the way for further cost reduction and large-scale development.

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Abstract

本发明涉及一种太阳能电池组件及其制备方法。上述太阳能电池组件，包括电池组，电池组包括若干个联接的电池片，电池片按照成行成列的方式排布；在行方向上，相邻两个电池片采用连接件交叠串联；在列方向上，相邻两个电池片通过连接件并联。上述太阳能电池组件中，不仅能够提高太阳能电池组件的转化效率。同时，电池片与相邻的电池片均为电性连接，因此，本发明的太阳能电池组件中的每个电池片均为独立单元，即使由于物理或者弹性的变化导致某个电池片断裂或者相邻两个电池片分离，电流可流向与之相邻且并联的电池片，而不会对其余的电池片造成不良影响，有利于降低整个太阳能电池组件的功率损失。此外，还提供一种上述太阳能电池组件的制备方法。

Description

太阳能电池组件及其制备方法 技术领域
本发明涉及太阳能电池技术领域，特别是涉及一种太阳能电池组件及其制备方法。
背景技术
太阳能作为一种新兴能源，与传统的化石燃料相比，具有取之不尽用之不竭、清洁环保等各方面的优势。目前主要的一种太阳能利用方式是通过太阳能电池组件将接收的光能转化为电能输出，传统的太阳能电池组件是由若干太阳能电池片(或称光伏电池)串联后进行封装并按方阵排列形成的大面积电池组件。其中，太阳能电池片吸收光能，电池两端出现异号电荷的积累，即产生“光生电压”，这就是“光生伏特效应”，在光生伏特效应的作用下，太阳能电池的两端产生电动势，从而将光能转换成电能。
传统的太阳能电池组件通常包括若干个电池串列，每个电池串列包括若干个串联的太阳能电池片。然而，在上述太阳能电池组件的使用过程中，由于物理或者弹性的变化容易导致太阳能电池片断裂或者相邻两个太阳能电池片分离，则其所在的电池串列的电路中断，导致失效，造成整个太阳能电池组件的功率损失。
发明内容
基于此，有必要针对传统的太阳能电池组件的功率损失的问题，提供一种降低功率损失的太阳能电池组件。
一种太阳能电池组件，包括电池组，所述电池组包括若干个联接的电池片，所述电池片按照成行成列的方式排布；
在行方向上，相邻两个所述电池片采用连接件交叠串联；
在列方向上，相邻两个所述电池片通过所述连接件并联。
上述太阳能电池组件中，相邻两个电池片采用连接件交叠串联，能够提高 太阳能电池组件的转化效率。同时，由于电池片与相邻的电池片均为电性连接，因此，与传统的太阳能电池组件相比，本发明的太阳能电池组件中的每个电池片均为独立单元，即使由于物理或者弹性的变化导致某个电池片断裂或者相邻两个电池片分离，电流可流向与之相邻且并联的电池片，而不会对其余的电池片造成不良影响，有利于降低整个太阳能电池组件的功率损失。
在其中一个实施例中，所述电池片为电池切割片，所述电池切割片由太阳能电池片切割而成。
在其中一个实施例中，在同一列中的所有所述电池片共用所述连接件。
在其中一个实施例中，在同一列中的所有所述电池片位于所述连接件的同一侧。
在其中一个实施例中，所述连接件呈片状，所述连接件的内部设置有用以连通所述连接件两侧表面的镂空孔。
在其中一个实施例中，所述连接件呈长条状，所述连接件的长边的边缘位置设置有若干个间隔排列的缺口，且所述缺口与所述镂空孔不相通。
在其中一个实施例中，所述电池片包括正面电极和背面电极；
所述连接件包括与所述正面电极相连的第一表面以及与所述背面电极相连的第二表面，所述第一表面上设置有交替排列的第一连接区域和第一非连接区域，所述第二表面上设置有交替是连接的第二连接区域和第二非连接区域，所述第一非连接区域在所述第一表面上的投影面积大于或者等于所述第二连接区域在所述第一表面上的投影面积；
所述正面电极与所述第一连接区域连接，所述背面电极与所述第二连接区域连接。
在其中一个实施例中，所述第一连接区域在所述第一表面的投影为第一投影，所述第二连接区域在所述第一表面的投影为第二投影，所述第一投影与相邻所述第二投影的间隔为1mm～20mm。
在其中一个实施例中，所述正面电极和所述背面电极均沿所述电池片的长度方向延伸，且所述第一非连接区域和所述第二非连接区域上分别设置有第一阻隔焊接层和第二阻隔焊接层。
在其中一个实施例中，所述正面电极和所述背面电极均沿所述电池片的长度方向延伸，所述正面电极上设置有交替排列的第三连接区域和第三非连接区域，所述背面电极上设置有交替排列的第四连接区域和第四非连接区域；
所述第三连接区域与所述第一连接区域连接，所述第四连接区域与所述第二连接区域连接，所述第三非连接区域和所述第四非连接区域上分别设置有第三阻隔焊接层和第四阻隔焊接层。
此外，还提供一种太阳能电池组件的制备方法，包括如下步骤：
提供若干个电池片和若干个连接件；
将所述若干个电池片与所述若干个连接件联接，得到电池组，所述电池组中，所述电池片按照成行成列的方式排布；在行方向上，相邻两个所述电池片采用连接件交叠串联；在列方向上，相邻两个所述电池片通过所述连接件并联。
采用上述太阳能电池组件的制备方法得到的太阳能电池组件中，由于电池片与相邻的电池片均为电性连接，因此，与传统的太阳能电池组件相比，本发明的太阳能电池组件中的每个电池片均为独立单元，即使由于物理或者弹性的变化导致某个电池片断裂或者相邻两个电池片分离，电流可流向与之相邻且并联的电池片，而不会对其余的电池片造成不良影响，有利于降低整个太阳能电池组件的功率损失。
在其中一个实施例中，将所述若干个电池片与所述若干个连接件联接的操作为：
将若干个所述电池片按列排列，得到电池列，之后将所述连接件和所述电池列交替联接。
附图说明
图1为一实施方式的太阳能电池组件的正面示意图；
图2为一实施方式的太阳能电池组件的电路图；
图3为一实施方式的电池片的向光面的示意图；
图4为一实施方式的电池片的背光面的示意图；
图5为一实施方式的连接件的示意图；
图6为另一实施方式的连接件的示意图；
图7为一实施方式的行方向上相邻电池片之间的串联示意图；
图8为一实施方式的列方向上相邻电池片之间的并联示意图；
图9为另一实施方式的电池片的向光面的示意图；
图10为另一实施方式的电池片的背光面的示意图；
图11为另一实施方式的行方向上相邻电池片之间的串联示意图；
图12为另一实施方式的连接件的侧面示意图；
图13为一实施方式的第一连接区域与第二连接区域分别在第一表面上投影的示意图；
图14为另一实施方式的正面电极、连接件和相邻电池切割片的背面电极的侧面示意图；
图15为一实施方式的太阳能电池组件的制备方法的流程图。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本发明。但是本发明能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似改进，因此本发明不受下面公开的具体实施例的限制。
请参见图1和图2，一实施方式的太阳能电池组件100包括两个串联的电池组110。每个电池组110包括33*6个联接的电池片112。电池片112按照成行成列的方式排布。
具体的，在行方向上，相邻两个电池片112采用连接件交叠串联。在列方向上，相邻两个电池片112通过上述连接件并联。如图1中所示，电池组110中，每行有33个电池片112交叠串联，而每列有6个电池片112并联。
本实施方式的电池片112为电池切割片，具体的，其均由太阳能电池片进行五等分切割而成。需要说明的是，本发明不限于上述的五等分切割，还可以将太阳能电池片进行任意等分或不等分切割，得到若干电池切割片，并从中挑 选合适的电池切割片进行排版，进行串并联之后得到本发明的太阳能电池组件。
从图1中可以看出，本实施方式的太阳能电池组件100中的若干个面积相同的电池片112排列整齐且紧密，使得电池片112的效率一致性、匹配性更佳，从而提高整个太阳能电池组件的工作效率。
请参见图3和图4，本实施方式的电池片112包括用于吸收辐射的向光面及相对于向光面背向设置的背光面。
如图3中所示，电池片112的向光面上设置有7个沿电池片112的长度方向等间距排列的正面电极114，且上述正面电极114位于电池片112的长边边缘位置。因此，当行方向上的相邻两个电池片112串联时，能够避免太阳光照对电池片112的过多遮挡，从而避免降低太阳能电池组件对太阳光照的利用率。
如图4中所示，电池片112的背光面上设置有6个沿电池片112的长度方向等间距排列的背面电极116。其中，背面电极116在电池片112的向光面上的投影位于相邻两个正面电极114在电池片112的向光面上的投影之间。此外，为了与连接件配合使用，使连接件的缓冲空间更大，故将背面电极116设置于电池片112的非边缘位置。但不以此为限，具体可根据实际使用情况进行设置。
请参见图5，本实施方式的连接件120为弹性连接件，且呈片状和长条状，其优选自铜箔、铝箔、镀锡铜箔和铜铝合金箔中的任意一种。连接件120的内部设置有用以连通连接件120两侧表面的镂空孔121。本实施方式的镂空孔121的截面为平行四边形，且多个镂空孔121沿连接件120的长度方向规整排列，可以起到应力缓冲作用，能够减少应力释放对太阳能电池组件的不良影响。当然，镂空孔121的截面不限于本实施方式的平行四边形，亦可为其他形状，其位置和排列方式亦可根据具体需求进行改变，均可起到应力缓冲的作用。
需要说明的是，本发明的连接件不限于上述实施方式，为了起到更好的应力缓冲作用，除了在连接件的内部设置镂空孔之外，还可以在连接件的边缘位置设置缺口。
请参见图6，另一实施方式的连接件220的内部设置有若干个规整排列的镂空孔221，此外，还在其长边的边缘位置设置有若干个间隔排列的缺口222，且缺口222与镂空孔221不相通。具体的，缺口222位于相邻两个镂空孔221之 间。因此，当连接件220的两个长边分别与位于其两侧的电池片112联接时，能够起到更好的应力缓冲作用，减少应力释放对太阳能电池组件的不良影响。
请参见图7，太阳能电池组件100中，行方向上的三个相邻的电池片112采用连接件120进行串联。连接件120的长边的两端边缘分别与电池片112的正面电极114和背面电极116连接。由于正面电极114和背面电极116为交叉设计，因此，连接件120分别与两侧的电池片112交叉连接。这样在相邻的正面电极114之间以及相邻的背面电极116之间均形成了缓冲区间，能够提高太阳能电池组件100的弹性，降低太阳能电池组件100隐裂的风险，不容易断栅裂片。
请参见图8，太阳能电池组件100中，列方向上的相邻的电池片112采用连接件120进行并联。本实施方式中，在同一列中的所有电池片112位于连接件120的同一侧。由于连接件120位于电池片112的背面，故不会对电池片112进行遮挡，避免造成损失。
此外，本实施方式中，在同一列中的所有电池片112共用连接件120。当然，亦可选择多个较短的连接件120将列方向上相邻的电池片112进行并联。
需要说明的是，本发明的电池片和连接件均不限于上述实施方式，亦可为其他形式。例如，电池片的正面电极和背面电极均可以为沿电池片的长度方向延伸，而连接件可以为条形的焊带，其内部可以不设置镂空孔或者缺口。
请参见图9和图10，另一实施方式的太阳能电池组件的电池片212包括沿电池片212的长度方向延伸的正面电极214和背面电极216。正面电极214和背面电极216分别位于电池片212相对两端的边缘位置。
请参见图11，行方向上相邻两个电池片212通过连接件300交叠串联。本实施例中，左侧电片212的背面电极216的宽度略大于右侧电池片212的正面电极214的宽度，而连接件300的宽度小于右侧电池片212的正面电极214的宽度，能够避免放置时相邻两个电池片212的位置偏移而露出正面电极214或连接件300，从而减少光照面积。
请参见图12，本实施方式的连接件300包括与正面电极214相连的第一表面310以及与背面电极216相连的第二表面320。第一表面310上设置有交替排列的第一连接区域311和第一非连接区域312。正面电极214与第一连接区域 311连接。
第二表面320上设置有交替排列的第二连接区域321和第二非连接区域322。背面电极216与第二连接区域321连接。
请参见图13，本实施方式的第一连接区域311在第一表面310的投影为第一投影3112，第二连接区域321在第一表面310的投影为第二投影3212，第一投影3112与相邻第二投影3212的间隔为1mm～20mm之间的任意数值。在这个间隔范围内，正面电极214与背面电极216的连接区域之间均形成了缓冲区间，来提高太阳能电池组件的弹性，降低太阳能电池组件隐裂的风险，不容易断栅裂片。但不以此为限，亦可为其他数值的间隔。
如图13中所示，第一非连接区域312在第一表面310上的投影面积大于第二连接区域321在第一表面310上的投影面积。
此外，第一非连接区域312和第二非连接区域322上分别设置有第一阻隔焊接层313和第二阻隔焊接层323。本实施例的第一阻隔焊接层313和第二阻隔焊接层323为油墨涂层。当然，第一阻隔焊接层313和第二阻隔焊接层323均亦可为其他起到阻隔焊接作用的涂层。当相邻两个电池片212通过连接件300进行交叠串联时，第一阻隔焊接层313和第二阻隔焊接层323用于阻隔焊接，同时还具有一定的弹性，能够起到缓冲的作用，从而提高了本实施例的太阳能电池组件的弹性，能够实现必要的弹性变形来抵抗外部或者内部的内应力的形变需求，降低太阳能电池组件隐裂的风险，不容易断栅裂片，有利于应用。
上述实施例中，在连接件300上设置有第一阻隔焊接层313和第二阻隔焊接层323，用于阻隔焊接，并提供一定的弹性。需要说明的是，亦可在位于连接件两侧的电池片的正面电极和背面电极上设置阻隔焊接层。
请参见图14，另一实施方式的电池片的正面电极410上设置有交替排列的第三连接区域411和第三非连接区域412。背面电极420上设置有交替排列的第四连接区域421和第四非连接区域422。第三连接区域411和第四连接区域421均与连接件430连接。
第三非连接区域412和第四非连接区域422上分别设置有第三阻隔焊接层413和第四阻隔焊接层423。本实施例的第三阻隔焊接层413和第四阻隔焊接层 423为不干胶层。
综上所述，上述太阳能电池组件中，由于电池片与相邻的电池片均为电性连接，因此，与传统的太阳能电池组件相比，本发明的太阳能电池组件中的每个电池片均为独立单元，即使由于物理或者弹性的变化导致某个电池片断裂或者相邻两个电池片分离，电流可流向与之相邻且并联的电池片，而不会对其余的电池片造成不良影响，有利于降低整个太阳能电池组件的功率损失。
此外，本发明还提供一种太阳能电池组件的制备方法，如图15所示，包括如下步骤：
S10、提供若干个电池片和若干个连接件。
S20、将步骤S10的若干个电池片与若干个连接件联接，得到电池组，电池组中，电池片按照成行成列的方式排布；在行方向上，相邻两个电池片采用连接件交叠串联；在列方向上，相邻两个电池片通过连接件并联。
在一个较优的实施例中，将若干个电池片与若干个连接件联接的操作为：将若干个电池片按列排列，得到电池列，之后将连接件和电池列交替联接。
在一个较优的实施例中，将连接件和电池列交替联接的操作中，电池片的背光面朝上。
采用上述太阳能电池组件的制备方法得到的太阳能电池组件中，由于电池片与相邻的电池片均为电性连接，因此，与传统的太阳能电池组件相比，本发明的太阳能电池组件中的每个电池片均为独立单元，即使由于物理或者弹性的变化导致某个电池片断裂或者相邻两个电池片分离，电流可流向与之相邻且并联的电池片，而不会对其余的电池片造成不良影响，有利于降低整个太阳能电池组件的功率损失。
此外，本发明的设计也同样消除传统的串单元的基本理念，采用了板块互连全自动化的概念，整体板块只有正极和负极，没有其他的工艺和操作动作需求，提升了组件的自动化工艺和操作，也根本性提升了产品的生产产能。将实现太阳能电池组件的高度自动化发展，减少人工干预带来的的性能和品质风险。提升组件功率10％，同时也提速产能，为进一步降本和规模化发展铺开基础。
上述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述 实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (12)

  1. 一种太阳能电池组件，包括电池组，其特征在于，所述电池组包括若干个联接的电池片，所述电池片按照成行成列的方式排布；
    在行方向上，相邻两个所述电池片采用连接件交叠串联；
    在列方向上，相邻两个所述电池片通过所述连接件并联。
  2. 根据权利要求1所述的太阳能电池组件，其特征在于，所述电池片为电池切割片，所述电池切割片由太阳能电池片切割而成。
  3. 根据权利要求1所述的太阳能电池组件，其特征在于，在同一列中的所有所述电池片共用所述连接件。
  4. 根据权利要求1所述的太阳能电池组件，其特征在于，在同一列中的所有所述电池片位于所述连接件的同一侧。
  5. 根据权利要求1所述的太阳能电池组件，其特征在于，所述连接件呈片状，所述连接件的内部设置有用以连通所述连接件两侧表面的镂空孔。
  6. 根据权利要求5所述的太阳能电池组件，其特征在于，所述连接件呈长条状，所述连接件的长边的边缘位置设置有若干个间隔排列的缺口，且所述缺口与所述镂空孔不相通。
  7. 根据权利要求1所述的太阳能电池组件，其特征在于，所述电池片包括正面电极和背面电极；
    所述连接件包括与所述正面电极相连的第一表面以及与所述背面电极相连的第二表面，所述第一表面上设置有交替排列的第一连接区域和第一非连接区域，所述第二表面上设置有交替是连接的第二连接区域和第二非连接区域，所述第一非连接区域在所述第一表面上的投影面积大于或者等于所述第二连接区域在所述第一表面上的投影面积；
    所述正面电极与所述第一连接区域连接，所述背面电极与所述第二连接区域连接。
  8. 根据权利要求7所述的太阳能电池组件，其特征在于，所述第一连接区域在所述第一表面的投影为第一投影，所述第二连接区域在所述第一表面的投 影为第二投影，所述第一投影与相邻所述第二投影的间隔为1mm～20mm。
  9. 根据权利要求7所述的太阳能电池组件，其特征在于，所述正面电极和所述背面电极均沿所述电池片的长度方向延伸，且所述第一非连接区域和所述第二非连接区域上分别设置有第一阻隔焊接层和第二阻隔焊接层。
  10. 根据权利要求7所述的太阳能电池组件，其特征在于，所述正面电极和所述背面电极均沿所述电池片的长度方向延伸，所述正面电极上设置有交替排列的第三连接区域和第三非连接区域，所述背面电极上设置有交替排列的第四连接区域和第四非连接区域；
    所述第三连接区域与所述第一连接区域连接，所述第四连接区域与所述第二连接区域连接，所述第三非连接区域和所述第四非连接区域上分别设置有第三阻隔焊接层和第四阻隔焊接层。
  11. 一种太阳能电池组件的制备方法，其特征在于，包括如下步骤：
    提供若干个电池片和若干个连接件；
    将所述若干个电池片与所述若干个连接件联接，得到电池组，所述电池组中，所述电池片按照成行成列的方式排布；在行方向上，相邻两个所述电池片采用连接件交叠串联；在列方向上，相邻两个所述电池片通过所述连接件并联。
  12. 根据权利要求11所述的太阳能电池组件的制备方法，其特征在于，将所述若干个电池片与所述若干个连接件联接的操作为：
    将若干个所述电池片按列排列，得到电池列，之后将所述连接件和所述电池列交替联接。
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CN110649127A (zh) * 2019-10-29 2020-01-03 中国华能集团有限公司 一种叠瓦光伏组件制造系统及其工作方法
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