[go: up one dir, main page]

WO2019237556A1 - 太阳能电池片连接用焊带及组件 - Google Patents

太阳能电池片连接用焊带及组件 Download PDF

Info

Publication number
WO2019237556A1
WO2019237556A1 PCT/CN2018/107307 CN2018107307W WO2019237556A1 WO 2019237556 A1 WO2019237556 A1 WO 2019237556A1 CN 2018107307 W CN2018107307 W CN 2018107307W WO 2019237556 A1 WO2019237556 A1 WO 2019237556A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar cell
connection
metal wire
tape
connecting surface
Prior art date
Application number
PCT/CN2018/107307
Other languages
English (en)
French (fr)
Inventor
彭福国
Original Assignee
君泰创新（北京）科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 君泰创新（北京）科技有限公司 filed Critical 君泰创新（北京）科技有限公司
Publication of WO2019237556A1 publication Critical patent/WO2019237556A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
    • 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, but is not limited to, the technical field of solar cells, and in particular, to a welding tape and a component for connecting solar cells.
  • the welding tape mainly plays the role of connection and conduction.
  • the welding tape there are mainly two types of welding tapes commonly used in the industry, one is a flat welding tape with a rectangular cross section, and the other is a linear welding tape with a circular cross section. The following issues exist:
  • the flat ribbon because of its large light-shielding area and its surface is flat, the light incident on its surface is totally reflected out of the photovoltaic module, and the solar energy utilization rate is low; for the linear ribbon, its The contact area with the solar cell is small, the reliability of welding is poor, and the aging resistance is poor. Especially when the temperature changes greatly, it is easy to cause disconnection.
  • An embodiment of the present invention provides a soldering tape for solar cell connection.
  • the soldering tape for solar cell connection includes a plurality of metal wires.
  • Each segment of the metal wire includes a connecting surface and a non-connecting surface extending along the length direction.
  • the connecting surface is used for bonding with the solar cell sheet, and the area of the non-connecting surface parallel to the connecting surface is smaller than the connecting surface.
  • connection faces of adjacent metal lines are oriented in opposite directions.
  • An embodiment of the present invention further provides a solar cell module, which includes the solar cell connection tape and a plurality of solar cells according to any one of the foregoing embodiments, and a single of the solar cells Connected to the connection surface of a section of metal wire.
  • FIG. 1 is a schematic structural view of a front view of a welding tape for connecting solar cells according to an embodiment of the present invention
  • FIG. 2 is a schematic left side structural view of the soldering tape for solar cell connection described in FIG. 1; FIG.
  • FIG. 3 is a schematic plan view of the structure of the soldering tape for solar cell connection described in FIG. 1; FIG.
  • FIG. 4 is a schematic structural view of a front view of a soldering tape for connecting solar cells according to another embodiment of the present invention.
  • FIG. 5 is a schematic left-side view of the soldering tape for solar cell connection described in FIG. 4; FIG.
  • FIG. 6 is a schematic top plan view of a soldering tape for solar cell connection described in FIG. 4; FIG.
  • FIG. 7 is a schematic structural view of a front view of a soldering tape for connecting solar cells according to another embodiment of the present invention.
  • FIG. 8 is a schematic left side structural view of the soldering tape for solar cell connection described in FIG. 7; FIG.
  • FIG. 9 is a schematic plan view of the structure of the soldering tape for solar cell connection described in FIG. 7; FIG.
  • FIG. 10 is a schematic structural diagram of a solar cell module provided by an embodiment of the present invention.
  • Fig. 11 is a schematic cross-sectional structure view taken along A-A in Fig. 10.
  • An embodiment of the present invention provides a soldering tape for solar cell connection.
  • the front view is shown in FIG. 1 or FIG. 4 or FIG. 7, the left view is shown in FIG. 2 or FIG. 5 or FIG.
  • the soldering tape for solar cell connection includes a plurality of metal wires 1.
  • Each segment of the metal wire 1 includes a connecting surface 101 and a non-connecting surface 102 extending along the length direction.
  • the connecting surface 101 is used to be attached to the solar cell sheet 2 and the area of the non-connecting surface 102 parallel to the connecting surface 101. Smaller than the area of the connecting surface 101;
  • connection surfaces 101 of the adjacent metal lines 1 are opposite to each other, as shown in FIG. 1 or FIG. 4 or FIG. 7.
  • the non-connecting surface 102 does not have a portion parallel to the connecting surface 101 (that is, when the non-connecting surface 102 is not parallel to the connecting surface 101), the area of the non-connecting surface 102 that is parallel to the connecting surface 101 is 0. .
  • the length direction mentioned here is the direction in which the length of the metal wire 1 is located.
  • Each adjacent metal wire 1 is connected to each other.
  • the metal wire 1 may include two sections, three sections, or four sections, etc., all of which can achieve the purpose of the present application, and the purpose thereof does not depart from the design concept of the present invention, which is not repeated here, and all belong to the protection scope of the present application.
  • the following description uses a solder tape including metal wires 1 at both ends as an example for description.
  • connection surface 101 of the metal wire 1 is bonded to the solar cell sheet 2 so that the contact area between the connection surface 101 and the solar cell sheet 2 is increased, and the connection between the metal wire 1 and the solar cell sheet 2 is improved.
  • the non-connecting surface 102 of the metal wire 1 is set to be neither parallel to the connecting surface 101, or the area of the non-connecting surface 102 parallel to the connecting surface 101 is smaller than the area of the connecting surface 101, so that incident light is illuminated.
  • a part of the incident light can pass between the non-connecting surface 102 and the glass (not shown in the figure) to be irradiated onto the solar cell sheet 2 again to improve the utilization rate of the incident light.
  • the connecting surfaces 101 of the adjacent metal wires 1 are set to face each other in an opposite direction, the positive electrode and the negative electrode of the adjacent solar cell sheet 2 are connected, so that a plurality of solar cell sheets 2 are connected to increase the
  • the utilization rate also ensures the reliability of the connection between the solder tape and the solar cell 2.
  • a glass may be coated on the upper part of the solar cell sheet 2, and the glass is a glass with high light transmittance.
  • connection surface 101 As for the connection surface 101, the connection surface 101 of each segment of the metal wire 1 is connected to the solar cell sheet 2, and plays a role of connecting the metal wire 1 and the solar cell sheet 2.
  • connection surface 101 can be set as a flat surface, so that the contact area between the connection surface 101 and the solar cell 2 is maximized to ensure the connection surface 101 and the solar cell.
  • the area of the connection surface 101 of each segment of the metal wire 1 may be greater than or equal to any non-connection surface 102 that is not parallel to the connection surface 101. Area.
  • This arrangement can ensure that the contact area between the metal wire 1 and the solar cell sheet 2 is the largest, and it is convenient for the metal wire 1 to be connected to the front (light-receiving surface) main grid line or the back (backlight surface) main grid line of the solar cell 2 by welding. , Further improving the reliability of the connection between the connection surface 101 and the solar cell sheet 2.
  • a plurality of fine grid lines parallel to each other are provided on the front or back of the solar cell chip 2, and a plurality of parallel main grid lines are provided above the fine grid lines.
  • the main grid lines and the fine grid lines are electrically connected and perpendicular to each other. .
  • the length of each segment of the metal wire 1 may be greater than the length of a single solar cell sheet 2.
  • the adjacent solar cell sheet 2 is connected by the metal wire 1.
  • the positive electrode is connected to the negative electrode, and the metal wire 1 needs to have a part of the connection length between the two adjacent solar cells 2. As shown in FIG. 7, the adjacent solar cells 2 can be avoided due to the too close distance. There was a problem covering each other.
  • each segment of metal wire 1 its length is 1 mm to 3 mm longer than the length of the corresponding solar cell sheet 2.
  • the length of each segment of the metal wire 1 can be selectively set according to the size of the solar cell sheet 2, and the value is not specifically limited in the embodiment of the present invention.
  • non-connected surface 102 For the non-connected surface 102, it can be seen from the literal meaning that the non-connected surface 102 is every other surface other than the connected surface 101.
  • the incident light will not be incident on the non-connecting surface 102. All the photovoltaic modules are directly reflected, but a part of the incident light can be reflected again between the non-connecting surface 102 and the overlying glass, and then irradiated onto the solar cell sheet 2 again to improve the utilization rate of the incident light.
  • non-connecting surface 102 In an exemplary embodiment of the non-connecting surface 102:
  • the non-connecting surface 102 may include one or more curved surfaces.
  • the arc surface near the connecting surface 101 is connected to the connecting surface 101. At this time, the non-connecting surface 102 is not parallel to the connecting surface 101.
  • the non-connecting surface 102 may be an arc surface.
  • the front view is shown in FIG. 1, the left view is shown in FIG. 2, and the top view is shown in FIG. 3.
  • the non-connecting surface 102 of the metal wire 1 provided on the upper part of the solar cell sheet 2 is not parallel to the connecting surface 101.
  • the incident light is irradiated onto the non-connecting surface 102, part of the incident light can pass through the arc surface and cover it. After multiple reflections between the glass, the solar cell 2 is irradiated again, instead of directly reflecting out the photovoltaic module.
  • the arc angle corresponding to the arc surface may be 90 ° to 180 °.
  • connection surface 101 is sufficiently large to ensure the firmness of the connection between the metal wire 1 and the solar cell sheet 2.
  • the non-connecting surface 102 of each segment of the metal wire 1 is an arc surface, and the arc surface is The corresponding radian angle is 180 °, that is, the non-connecting surface 101 of each segment of the metal wire 1 is semi-circular; for the overall structure of the multi-segment metal wire 1, as shown in FIG. 2, the welding strip structure can be two semi-circles Symmetric structures formed by opposite shapes.
  • the radian angle corresponding to each curved surface may be the same or different, which is not specifically limited in the embodiment of the present invention.
  • non-connecting surface 102 In an exemplary embodiment of the non-connecting surface 102:
  • the non-connecting surface 102 may include two or more inclined surfaces, and adjacent two inclined surfaces are connected.
  • the inclined surface near the connecting surface 101 is connected to the connecting surface 101. At this time, the non-connecting surface 102 is not parallel to the connecting surface 101.
  • the non-connecting surface 102 is two inclined surfaces
  • its front view is shown in FIG. 4
  • the left view is shown in FIG. 5
  • the top view is shown in FIG. 6.
  • the arrangement is such that the non-connecting surface 102 of the metal wire 1 provided on the upper part of the solar cell sheet 2 is not parallel to the connecting surface 101.
  • the incident light is irradiated onto the non-connecting surface 102, part of the incident light can pass through the inclined surface and its overlying surface. After multiple reflections between the glass, the solar cells 2 are irradiated again, instead of reflecting all the photovoltaic modules directly.
  • the angle formed by the two adjacent inclined surfaces may be greater than or equal to 60 °.
  • the area of the connection surface 101 of each segment of the metal wire 1 is greater than or equal to the area of the non-connection surface 102 that is not parallel to the connection surface 101, which can ensure that the contact area of the connection surface 101 is large enough to ensure the connection between the metal wire 1 and the solar cell sheet 2. The firmness.
  • the non-connected surface 102 of each segment of the metal wire 1 is two connected inclined surfaces, and the angle formed by the two inclined surfaces is The angle is 60 °, and the shape of the cross section of the metal wire 1 that is formed by the connecting surface 101 and the non-connecting surface 102 is an equilateral triangle.
  • the welding tape structure is A symmetrical structure formed by two equilateral triangles facing each other.
  • the non-connecting surface 102 may be composed of two or more inclined surfaces, and may not be composed of one inclined surface.
  • non-connecting surface 102 In an exemplary embodiment of the non-connecting surface 102:
  • the cross-section of the metal wire 1 formed by the non-connection surface 102 and the connection surface 101 is trapezoidal.
  • the front view is shown in FIG. 7, the left view is shown in FIG. 8, and the top view is shown in FIG. 9.
  • the non-connection surface 102 includes a portion parallel to the connection surface 101, the area parallel to the connection surface 101 is smaller than the area of the connection surface 101, so that when the incident light is irradiated onto the non-connection surface 102, not all of it is reflected out Photovoltaic modules, but part of the light is irradiated to the part that is not parallel to the connection surface 101. After multiple reflections between this part and the glass it covers, it is again irradiated onto the solar cell sheet 2, which improves the utilization of incident light. .
  • the shape of the cross-section of the metal wire 1 formed by the non-connecting surface 102 and the connecting surface 101 may be It is a trapezoid; for the overall structure of the multi-segment metal wire 1, as shown in FIG. 8, the solder tape structure is a symmetrical structure formed by two trapezoids facing each other.
  • the non-connecting surface 102 is designed as a semi-circular arc surface or two adjacent inclined surfaces with an included angle of 60 °.
  • the processing technology is simple, the processing accuracy is low, the production cost is low, and it is easy to promote the application. Therefore, in actual production In processing, the non-connecting surface 102 is mostly the structure shown in FIG. 2 or the structure shown in FIG. 5.
  • the metal wire 1 may be any one or more of copper wire, aluminum wire, and alloy wire containing copper or aluminum, so as to ensure that the metal wire 1 has excellent conductive performance.
  • the material of the metal wire 1 may be copper.
  • the soldering tape for solar cell connection further includes a protective layer, and the protective layer is laid on the non-connection surface 102.
  • a protective layer is provided to protect the metal wire 1 and prevent the metal wire 1 from being oxidized.
  • the metal material which is more active than the metal wire 1 can be the material for making the protective layer.
  • the protective layer may be a tin plated layer.
  • An embodiment of the present invention also provides a solar cell module.
  • the solar cell module includes the above-mentioned welding strip for solar cell connection and a plurality of solar cells 2.
  • a single solar cell 2 is connected to a connection surface 101 of a section of metal wire 1. .
  • FIG. 10 Taking the connection diagram when the semi-circular welding tape of FIGS. 1 to 3 is used as an example, the structural schematic diagram is shown in FIG. 10, and the sectional structural schematic diagram along the A-A line is shown in FIG. 11.
  • a solar cell connection welding strip in series between any two adjacent solar cells 2, and the two metal wires of the soldering strip are connected to the top of one solar cell 2 and the bottom of another solar cell.
  • n-1 solar cells 2 can be connected in series using n-1 soldering strips.
  • connection surface 101 of the metal wire 1 and the solar cell sheet 2 are bonded, the contact area between the connection surface 101 and the solar cell sheet 2 is increased, the reliability of the connection between the metal wire 1 and the solar cell sheet 2 is improved, and avoidance is avoided.
  • a disconnection occurs between the metal wire 1 and the solar cell sheet 2; since the non-connecting surface 102 of the metal wire 1 is not parallel to the connecting surface 101, or the area of the non-connecting surface 102 parallel to the connecting surface 101 is smaller than the connecting surface
  • the area of 101 makes that when the incident light is irradiated on the non-connected surface 102, a part of the incident light can be reflected on the solar cell sheet 2 after multiple reflections between the non-connected surface 102 and the glass covered thereon without Will be directly reflected out of the photovoltaic module to improve the utilization of incident light.
  • connection surface of the metal wire and the solar cell are bonded, so that the contact area between the connection surface and the solar cell is increased, and the reliability of the connection between the metal wire and the solar cell is improved; It is set to be neither parallel to the connection surface, or the area of the non-connection surface parallel to the connection surface is smaller than the area of the connection surface, so that when incident light is irradiated on the non-connection surface, part of the incident light can pass through the non-connection surface and above it After multiple reflections between the covered glass, it is again irradiated onto the solar cell to improve the utilization of incident light; the connection faces of adjacent metal wires are connected in opposite directions, so that the positive electrode of the adjacent solar cell and The negative electrodes are connected to realize the connection of multiple solar cells.

Landscapes

  • Photovoltaic Devices (AREA)

Abstract

一种太阳能电池片连接用焊带及组件。所述太阳能电池片连接用焊带包括多段金属线，其中，每段金属线包括沿长度方向延伸的连接面和非连接面，连接面用于与太阳能电池片贴合，且非连接面中与连接面平行的部分的面积小于连接面的面积；相邻段金属线的连接面的朝向彼此相反。

Description

太阳能电池片连接用焊带及组件 技术领域
本发明涉及但不限于太阳能电池技术领域，特别涉及一种太阳能电池片连接用焊带及组件。
背景技术
随着常规化石燃料日益消耗殆尽，在所有的可持续能源中，太阳能无疑是一种最为清洁、可使用范围最为广泛的替代能源。太阳能电池可以实现将太阳能转化为电能，作为电源推动负载工作。而单个太阳能电池片不能直接做电源使用，必须将若干太阳能电池片通过焊带连接，并严密封装后，形成光伏电池组件进行使用。
在光伏组件中，焊带主要起到连接导电的作用。目前行业内常用的焊带主要有两种，一种是横截面为长方形的扁状焊带，另一种是横截面为圆形的线性焊带。存在以下问题：
对于扁状焊带而言，由于其存在较大的遮光面积，且其表面为平面，使得入射到其表面的光线被全部反射出光伏组件，太阳能利用率低；对于线性焊带而言，其与太阳能电池片的接触面积小，焊接的可靠性较差，耐老化性较差，特别是在温度变化较大时，易造成脱连。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种太阳能电池片连接用焊带，所述太阳能电池片连接用焊带包括多段金属线，其中，
每段金属线包括沿长度方向延伸的连接面和非连接面，所述连接面用于与太阳能电池片贴合，且非连接面中与所述连接面平行的部分的面积小于所述连接面的面积；
相邻段金属线的连接面的朝向彼此相反。
本发明实施例还提供了一种太阳能电池片组件，所述太阳能电池片组件包括上述任一实施例所述的太能电池片连接用焊带和多个太阳能电池片，单个所述太阳能电池片与一段金属线的连接面相连。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为本发明一实施例提供的太阳能电池片连接用焊带的主视结构示意图；
图2为图1中所述太阳能电池片连接用焊带的左视结构示意图；
图3为图1中所述太阳能电池片连接用焊带的俯视结构示意图；
图4为本发明另一实施例提供的太阳能电池片连接用焊带的主视结构示意图；
图5为图4中所述太阳能电池片连接用焊带的左视结构示意图；
图6为图4中所述太阳能电池片连接用焊带的俯视结构示意图；
图7为本发明又一实施例提供的太阳能电池片连接用焊带的主视结构示意图；
图8为图7中所述太阳能电池片连接用焊带的左视结构示意图；
图9为图7中所述太阳能电池片连接用焊带的俯视结构示意图；
图10为本发明一实施例提供的一种太阳能电池片组件的结构示意图；
图11为图10中的A-A剖视结构示意图。
图1至图11中的附图标记与部件名称之间的对应关系：
1-金属线；101-连接面；102-非连接面；2-太阳能电池片。
详述
下面将结合附图对本发明实施方式作进一步地详细描述。
本发明实施例提供了一种太阳能电池片连接用焊带，其主视图如图1或图4或图7所示，左视图如图2或图5或图8所示，俯视图如图3或图6或图9所示，该太阳能电池片连接用焊带包括多段金属线1。
其中，每段金属线1包括沿长度方向延伸的连接面101和非连接面102，连接面101用于与太阳能电池片2贴合，且非连接面102中与连接面101平行的部分的面积小于连接面101的面积；
相邻段金属线1的连接面101的朝向彼此相反，如图1或图4或图7所示。
在非连接面102中不存在与连接面101平行的部分时(即：非连接面102都不与连接面101平行时)，非连接面102中与连接面101平行的部分的面积即为0。
本领域技术人员可以理解的是，这里提及到的长度方向为金属线1的长度所在的方向。
相邻的每段金属线1之间彼此相连。
金属线1可以包括两段、三段或四段等，均可实现本申请的目的，其宗旨未脱离本发明的设计思想，在此不再赘述，均应属于本申请的保护范围内。下面以焊带包括两端金属线1为例进行说明。
本发明实施例的太阳能电池片连接用焊带的使用原理为：
(1)通过金属线1的连接面101与太阳能电池片2贴合，使得连接面101与太阳能电池片2之间的接触面积增加，提高了金属线1与太阳能电池片2之间连接的可靠性；
(2)通过将金属线1的非连接面102设置为都不与连接面101平行，或非连接面102中与连接面101平行的部分的面积小于连接面101的面积，使得入射光线在照射到非连接面102上时，部分入射光线可以经过非连接面102与其上覆的玻璃(在图中未显示)之间，再次照射到太阳能电池片2上，以提高入射光线的利用率。
因此，当将相邻段金属线1的连接面101设置为朝向彼此相反，使得相邻的太阳能电池片2的正极与负极相连，实现将多个太阳能电池片2连接， 以既提高入射光线的利用率，又确保焊带与太阳能电池片2之间连接的可靠性。
为了保护太阳能电池片2，在光伏组件中，可以在太阳能电池片2的上部加覆玻璃，且该玻璃为透光率高的玻璃。
下面对本发明实施例的太阳能电池片连接用焊带进行描述说明：
对于连接面101而言，每段金属线1的连接面101与太阳能电池片2相连，起到连接金属线1与太阳能电池片2的作用。
为了实现每段金属线1的连接面101与太阳能电池片2的牢固连接，连接面101可以设置为平面，使得连接面101与太阳能电池片2的接触面积最大，以确保连接面101与太阳能电池片2连接的牢固性。
为了确保金属线1与太阳能电池片2之间连接的可靠性，在结构设置上，每段金属线1的连接面101的面积可以大于或等于任一不与连接面101平行的非连接面102的面积。
如此设置，可以确保金属线1与太阳能电池片2之间的接触面积最大，便于金属线1通过焊接与太阳能电池片2的正面(受光面)主栅线或背面(背光面)主栅线相连，进一步提高连接面101与太阳能电池片2连接的可靠性。
在太阳能电池片2的正面或背面设置有多条互相平行的细栅线，而在细栅线的上方设置有多条互相平行的主栅线，主栅线与细栅线电连接且互相垂直。当进行太阳能发电时，太阳能电池片2中细栅线内的电流汇聚在其主栅线后可以通过金属线1传导输出。
为了确保金属线1与太阳能电池片2之间连接的可靠性，在结构设置上，每段金属线1的长度可以大于单个太阳能电池片2的长度。
如此设置，不仅可以使得金属线1与太阳能电池片2之间具有最大的接触面积，而且由于相邻的太阳能电池片2并非直接接触连接，而是通过金属线1将相邻太阳能电池片2的正极与负极相连，金属线1在相邻的两个太阳能电池片2之间需要预留部分连接长度，如图7所示，可以避免出现相邻的太阳能电池片2之间由于距离太近而出现互相遮盖的问题。
对于每段金属线1，其长度比相对应的太阳能电池片2的长度要长 1mm～3mm。每段金属线1的长度具体可以根据太阳能电池片2的尺寸进行选择性设定，其取值在本发明实施例中不作具体限定。
对于非连接面102而言，从字面含义中可以看出，非连接面102即为连接面101之外的其他每个面。
通过将其设置为都不与连接面101平行，或非连接面102中与连接面101平行的部分的面积小于连接面101的面积，使得入射光线在照射到非连接面102上时，不会直接全部反射出光伏组件，而是部分入射光线可以经过非连接面102与其上覆的玻璃之间经过多次反射后，再次照射到太阳能电池片2上，以提高入射光线的利用率。
在非连接面102的一个示例性实施例中：
非连接面102可以包括一个或多个弧面，靠近连接面101的弧面与连接面101相连，此时，非连接面102都不与连接面101平行。
非连接面102可以为一个弧面，其主视图如图1所示，左视图如图2所示，俯视图如图3所示。
如此设置，使得设置在太阳能电池片2上部的金属线1的非连接面102都不与连接面101平行，入射光线在照射到非连接面102上时，部分入射光线可以经过弧面与其上覆的玻璃之间的多次反射后，再次照射到太阳能电池片2上，而不是直接全部反射出光伏组件。
为了提高非连接面102的入射光线利用率，弧面所对应的弧度角可以为90°～180°。
如此设置，可以满足入射光线在入射到非连接面102上时，部分入射光线经过弧面与其上覆的玻璃之间的多次反射后，再次照射到太阳能电池片2上的要求；还可以确保连接面101的接触面积足够大，保证金属线1与太阳能电池片2之间连接的牢固性。
在本发明实施例中，在图1、图2和图3中所示的结构中，对于每段金属线1的非连接面102而言，非连接面102为一个弧面，且弧面所对应的弧度角为180°，即每段金属线1的非连接面101为半圆形；对于多段金属线1的整体结构而言，如图2所示，焊带结构可以为两个半圆形相对形成的对 称性结构。
当非连接面102包括多个弧面时，每个弧面所对应的弧度角可以相同也可以不同，在本发明实施例中不作具体限定。
在非连接面102的一个示例性实施例中：
非连接面102可以包括两个或两个以上斜面，相邻的两个斜面相连，靠近连接面101的斜面与连接面101相连，此时，非连接面102都不与连接面101平行。
举例来说，当非连接面102为两个斜面时，其主视图如图4所示，左视图如图5所示，俯视图如图6所示。
如此设置，使得设置在太阳能电池片2上部的金属线1的非连接面102都不与连接面101平行，入射光线在照射到非连接面102上时，部分入射光线可以经过斜面与其上覆的玻璃之间的多次反射后，再次照射到太阳能电池片2上，而不是直接全部反射出光伏组件。
为了提高非连接面102的入射光线利用率，相邻的两个斜面所形成的夹角的角度可以大于或等于60°。
如此设置，不仅可以满足入射光线在入射到非连接面102上时，部分入射光线经过斜面与其上覆的玻璃之间的多次反射后，再次照射到太阳能电池片2上要求，而且可以对应满足每段金属线1的连接面101的面积大于等于不与连接面101平行的非连接面102的面积，可以确保连接面101的接触面积足够大，保证金属线1与太阳能电池片2之间连接的牢固性。
在图4、图5和图6中所示的结构中，对于每段金属线1的非连接面102而言，非连接面102为两个相连的斜面，且两个斜面所形成的夹角的角度为60°，连接面101与非连接面102共同构成金属线1的横截面的形状为等边三角形；对于多段金属线1的整体结构而言，如图5所示，焊带结构为两个等边三角形相对形成的对称性结构。
非连接面102也可以由两个以上的多个斜面构成，而不能由一个斜面构成。
在非连接面102的一个示例性实施例中：
非连接面102与连接面101共同构成的金属线1的横截面的图形为梯形，其主视图如图7所示，左视图如图8所示，俯视图如图9所示。
虽然非连接面102中包含有与连接面101平行的部分，但是与连接面101平行的部分的面积小于连接面101的面积，使得入射光线在照射到非连接面102上时，不是全部反射出光伏组件，而是部分光线照射到不与连接面101平行的部分，经过该部分与其上覆的玻璃之间的多次反射后，再次照射到太阳能电池片2上，提高了入射光线的利用率。
在图7、图8和图9中所示的结构中，对于每段金属线1的非连接面102而言，非连接面102与连接面101共同构成的金属线1的横截面的形状可以为梯形；对于多段金属线1的整体结构而言，如图8所示，焊带结构为两个梯形相对形成的对称性结构。
非连接面102设计为半圆形弧面或所成的夹角为60°的两个相邻斜面，加工工艺简单，加工精度要求低，生产成本低，便于推广应用，因此，在实际的生产加工制作中，非连接面102多为图2所示结构或图5所示结构。
对于金属线1的材质而言，金属线1可以为铜线、铝线以及含有铜或铝的合金线中的任意一种或多种，以确保金属线1具有优良的导电性能。
由于铜材质获取途径便利，且价格低廉，在本发明实施例中，金属线1的材质可以为铜。
在此基础上，为了保护金属线1，防止金属线1在使用过程中被氧化，该太阳能电池片连接用焊带还包括：保护层，保护层敷设在非连接面102上。
通过设置保护层来保护金属线1，防止金属线1被氧化。
对于保护层的材质选择，只要比金属线1活泼的金属材质均可以为制作保护层的材质。
举例来说，保护层可以为镀锡层。
本发明实施例还提供了一种太阳能电池片组件，太阳能电池片组件包括上述太阳能电池片连接用焊带和多个太阳能电池片2，单个太阳能电池片2与一段金属线1的连接面101相连。
以采用图1至图3的半圆形焊带时的连接图为例，其结构示意图如图10所示，其沿A-A线的剖视结构示意图如图11所示。
可以是，每个太阳能电池片连接用焊带可以连接10～12个太阳能电池片2。
或者可以是任意相邻的两个太阳能电池片2之间串联一个太阳能电池片连接用焊带，焊带的两根金属线连接在一太阳能电池片2的上面和另一太阳能电池片的下面，以此来实现多个太阳能电池片2串联连接在一起，n个太阳能电池片2可以使用n-1个焊带实现串联连接。
以上两种方式均可实现本申请的目的，其宗旨未脱离本发明的设计思想，在此不再赘述，均应属于本申请的保护范围内。
由于金属线1的连接面101与太阳能电池片2贴合，使得连接面101与太阳能电池片2之间的接触面积增加，提高了金属线1与太阳能电池片2之间连接的可靠性，避免金属线1与太阳能电池片2之间发生脱连现象；由于金属线1的非连接面102都不与连接面101平行，或非连接面102中与连接面101平行的部分的面积小于连接面101的面积，使得入射光线在照射到非连接面102上时，部分入射光线可以经过非连接面102与其上覆的玻璃之间的多次反射后，再次照射到太阳能电池片2上，而不会直接被全部反射出光伏组件，以提高入射光线的利用率。
本发明实施例提供的技术方案的有益效果至少包括：
通过金属线的连接面与太阳能电池片贴合，使得连接面与太阳能电池片之间的接触面积增加，提高了金属线与太阳能电池片之间连接的可靠性；通过将金属线的非连接面设置为都不与连接面平行，或非连接面中与连接面平行的部分的面积小于连接面的面积，使得入射光线在照射到非连接面上时，部分入射光线可以经过非连接面与其上覆的玻璃之间的多次反射后，再次照射到太阳能电池片上，以提高入射光线的利用率；相邻段金属线的连接面连接的朝向彼此相反，使得相邻的太阳能电池片的正极与负极相连，实现将多个太阳能电池片连接。
以上所述仅是为了便于本领域的技术人员理解本发明的技术方案，并不用以限制本发明。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (14)

  1. 一种太阳能电池片连接用焊带，所述太阳能电池片连接用焊带包括多段金属线(1)，其中，
    每段金属线(1)包括沿长度方向延伸的连接面(101)和非连接面(102)，所述连接面(101)用于与太阳能电池片(2)贴合，且非连接面(102)中与所述连接面(101)平行的部分的面积小于所述连接面(101)的面积；
    相邻段金属线(1)的连接面(101)的朝向彼此相反。
  2. 根据权利要求1所述的太阳能电池片连接用焊带，其中，所述非连接面(102)包括一个或多个弧面，靠近所述连接面(101)的所述弧面与所述连接面(101)相连。
  3. 根据权利要求2所述的太阳能电池片连接用焊带，其中，所述弧面所对应的弧度角为90°～180°。
  4. 根据权利要求1所述的太阳能电池片连接用焊带，其中，所述非连接面(102)包括两个或两个以上斜面，相邻的两个所述斜面相连，靠近所述连接面(101)的所述斜面与所述连接面(101)相连。
  5. 根据权利要求4所述的太阳能电池片连接用焊带，其中，相邻的两个所述斜面所形成的夹角的角度大于或等于60°。
  6. 根据权利要求1所述的太阳能电池片连接用焊带，其中，所述非连接面(102)包括两个斜面和一个平面，所述平面位于两个所述斜面之间、并与所述连接面(101)平行，所述平面的面积小于所述连接面(101)的面积。
  7. 根据权利要求1所述的太阳能电池片连接用焊带，其中，所述每段金属线(1)的连接面(101)的面积大于或等于任一不与所述连接面(101)平行的所述非连接面(102)的面积。
  8. 根据权利要求1所述的太阳能电池片连接用焊带，其中，所述金属线(1)包括铜线、铝线以及含有铜或铝的合金线中的任意一种或多 种。
  9. 根据权利要求1所述的太阳能电池片连接用焊带，其中，所述太阳能电池片连接用焊带还包括：保护层，所述保护层敷设在所述非连接面(102)上。
  10. 根据权利要求1所述的太阳能电池片连接用焊带，其中，多段金属线(1)包括两段金属线(1)，两段所述金属线(1)相连接，两个所述连接面(101)相对。
  11. 根据权利要求1所述的太阳能电池片连接用焊带，其中，多段金属线(1)依次相连接。
  12. 根据权利要求11所述的太阳能电池片连接用焊带，其中，相邻两段金属线(1)的两个连接面(101)相对或两个非连接面(102)相对。
  13. 一种太阳能电池片组件，所述太阳能电池片组件包括权利要求1～12任一项所述的太能电池片连接用焊带和多个太阳能电池片(2)，单个所述太阳能电池片(2)与一段金属线(1)的连接面(101)相连。
  14. 根据权利要求13所述的太阳能电池片组件，其中，每段所述金属线(1)的长度大于单个所述太阳能电池片(2)的长度。
PCT/CN2018/107307 2018-06-12 2018-09-25 太阳能电池片连接用焊带及组件 WO2019237556A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201820904692.6 2018-06-12
CN201820904692.6U CN208608213U (zh) 2018-06-12 2018-06-12 太阳能电池片连接用焊带及组件

Publications (1)

Publication Number Publication Date
WO2019237556A1 true WO2019237556A1 (zh) 2019-12-19

Family

ID=65662269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/107307 WO2019237556A1 (zh) 2018-06-12 2018-09-25 太阳能电池片连接用焊带及组件

Country Status (2)

Country Link
CN (1) CN208608213U (zh)
WO (1) WO2019237556A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113314635A (zh) * 2021-05-28 2021-08-27 常州时创能源股份有限公司 一种太阳能电池片连接用金属线的制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204289484U (zh) * 2014-12-23 2015-04-22 上海华友金裕微电子有限公司 一种微聚光增效光伏焊带
CN104867988A (zh) * 2015-04-15 2015-08-26 江苏东昇光伏科技有限公司 焊带及其制备工艺、太阳能电池组件
CN205985032U (zh) * 2016-08-12 2017-02-22 江苏亿欣新材料科技股份有限公司 一种具有凹凸表面的焊带
CN206541837U (zh) * 2017-01-22 2017-10-03 苏州腾晖光伏技术有限公司 一种反光焊带及低温焊接工艺的光伏组件

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204289484U (zh) * 2014-12-23 2015-04-22 上海华友金裕微电子有限公司 一种微聚光增效光伏焊带
CN104867988A (zh) * 2015-04-15 2015-08-26 江苏东昇光伏科技有限公司 焊带及其制备工艺、太阳能电池组件
CN205985032U (zh) * 2016-08-12 2017-02-22 江苏亿欣新材料科技股份有限公司 一种具有凹凸表面的焊带
CN206541837U (zh) * 2017-01-22 2017-10-03 苏州腾晖光伏技术有限公司 一种反光焊带及低温焊接工艺的光伏组件

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113314635A (zh) * 2021-05-28 2021-08-27 常州时创能源股份有限公司 一种太阳能电池片连接用金属线的制备方法
CN113314635B (zh) * 2021-05-28 2022-10-21 常州时创能源股份有限公司 一种太阳能电池片连接用金属线的制备方法

Also Published As

Publication number Publication date
CN208608213U (zh) 2019-03-15

Similar Documents

Publication Publication Date Title
CN105977329B (zh) 太阳能电池组件
CN102347388B (zh) 太阳能电池模块
CN115579407A (zh) 电极结构、背接触太阳能电池片、电池组件和光伏系统
CN117238984B (zh) 光伏电池片和光伏组件
CN107068796A (zh) 太阳能电池模块
US10115852B2 (en) Solar cell module
CN209708990U (zh) 太阳能电池单元、电池片及组件
CN110518077A (zh) 一种太阳能电池片及光伏组件
CN116913992A (zh) 一种电池片及光伏组件
JP2010016246A (ja) 太陽電池モジュール及びその製造方法
CN218677162U (zh) 一种太阳能电池串和光伏组件
CN104576767B (zh) 一种用于太阳能电池组件的焊带
WO2024001727A1 (zh) 太阳能电池及光伏组件
WO2019237556A1 (zh) 太阳能电池片连接用焊带及组件
WO2016131222A1 (zh) 光伏组件及其制造方法
CN209526093U (zh) 太阳能电池互联结构
CN219419052U (zh) 焊带件及电池组件
CN209526092U (zh) 太阳能电池互联结构
CN115241311A (zh) 异质结电池组
CN204216053U (zh) 一种光伏电池
CN214203700U (zh) 电池片和具有其的光伏组件
CN204216054U (zh) 一种光伏电池
JP2006041349A (ja) 光起電力素子およびその製造方法
CN204348744U (zh) 一种太阳能电池组件
JP2011249736A (ja) 太陽電池モジュールの製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18922353

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18922353

Country of ref document: EP

Kind code of ref document: A1