CN102044587A - Solar module - Google Patents

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CN102044587A
CN102044587A CN200910179860.5A CN200910179860A CN102044587A CN 102044587 A CN102044587 A CN 102044587A CN 200910179860 A CN200910179860 A CN 200910179860A CN 102044587 A CN102044587 A CN 102044587A
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solar cell
loops
solar
cell assembly
solar module
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吴立忠
陈志良
唐应堂
蔡世俊
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Wuxi Suntech Power Co Ltd
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Wuxi Suntech Power Co Ltd
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Priority to CN200910179860.5A priority Critical patent/CN102044587A/en
Priority to PCT/CN2010/001627 priority patent/WO2011044759A1/en
Publication of CN102044587A publication Critical patent/CN102044587A/en
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    • 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
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/95—Circuit arrangements
    • H10F77/953—Circuit arrangements for devices having potential barriers
    • H10F77/955—Circuit arrangements for devices having potential barriers for photovoltaic devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • 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
    • 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

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Abstract

本发明公开一种太阳电池组件，所述组件由两个回路组成，两个回路分别位于太阳电池组件的两侧，且两个回路分别汇流至接线盒，接线盒位于太阳电池组件的中部；两个回路分别包括至少一个由多个太阳电池与二极管并联而形成的支路。通过本发明的太阳电池组件，可以有效的保证太阳电池组件中的太阳电池不会因温度过高而发生损坏，并且可以降低太阳电池组件整体的串联电阻，尤其可以显著降低本发明的太阳电池组件组成的系统的串联电阻及系统安装成本。

Figure 200910179860

The invention discloses a solar cell assembly, the assembly is composed of two loops, the two loops are respectively located on both sides of the solar cell assembly, and the two loops are respectively connected to a junction box, and the junction box is located in the middle of the solar cell assembly; Each loop includes at least one branch formed by connecting a plurality of solar cells and diodes in parallel. Through the solar cell assembly of the present invention, it can effectively ensure that the solar cells in the solar cell assembly will not be damaged due to excessive temperature, and the overall series resistance of the solar cell assembly can be reduced, especially the solar cell assembly of the present invention can significantly reduce the The series resistance of the composed system and the installation cost of the system.

Figure 200910179860

Description

一种太阳电池组件 A solar cell module

技术领域technical field

本发明涉及光伏领域，尤其涉及一种太阳电池组件。The invention relates to the field of photovoltaics, in particular to a solar cell assembly.

背景技术Background technique

近年来，在发展可替代能源方面，太阳电池技术获得巨大突破，应用也愈加广泛。但是目前太阳电池组件一般存在以下问题：In recent years, in the development of alternative energy sources, solar cell technology has made great breakthroughs, and its applications have become more and more extensive. However, solar cell modules generally have the following problems:

太阳电池组件一般由54至72片太阳电池串联而成，在太阳电池组件内部，为了保护太阳电池，理想状态是为每个太阳电池并联一个旁路二极管，但是考虑到成本因素，因此现有技术的太阳电池组件内部通常构造为如图1所示的18-24片太阳电池4串联的支路并联一个旁路二极管5，但是现有的做法，在发生热斑效应时，会使太阳电池组件产生局部高温情况，当温度超过极限而使太阳电池4烧坏，从而导致整个太阳电池组件报废。A solar cell module is generally composed of 54 to 72 solar cells in series. Inside the solar cell module, in order to protect the solar cells, the ideal state is to connect a bypass diode in parallel for each solar cell. However, considering the cost factor, the existing technology The interior of the solar cell module is usually constructed as a branch of 18-24 solar cells 4 in series as shown in Figure 1 and a bypass diode 5 is connected in parallel. However, in the existing practice, when the hot spot effect occurs, the solar cell module will A local high temperature situation occurs, and when the temperature exceeds the limit, the solar cell 4 is burned out, thereby causing the entire solar cell assembly to be scrapped.

而且，如图1所示，现有太阳电池组件通常只配置一个接线盒1，通过在太阳电池组件内部使用焊带3(汇流条)将各支路电流汇总到一个接线盒1后再由电缆线2引出，这样的做法会增加组件导线的长度，在增加导线成本的同时也会增加串联电阻，降底组件整体的输出功率，尤其是在太阳电池组件组成发电系统时，太阳电池组件之间的电缆线的电阻由于长度的增加而增加，如图2所示。Moreover, as shown in Figure 1, the existing solar cell modules are usually equipped with only one junction box 1, and the currents of each branch are collected into a junction box 1 by using a welding ribbon 3 (bus bar) inside the solar cell module, and then the cable This method will increase the length of the module wires, increase the cost of the wires and increase the series resistance, and reduce the overall output power of the module, especially when the solar cell modules form a power generation system. The resistance of the cable wire increases as the length increases, as shown in Figure 2.

另外，现有的太阳电池组件的接线盒都是安装在太阳电池组件的头部位置，在太阳电池电站上使用时所需的安装支架较多导致系统安装成本比较高。In addition, the junction boxes of existing solar cell modules are all installed at the head of the solar cell module, and when used in a solar cell power station, many mounting brackets are required, resulting in relatively high system installation costs.

发明内容Contents of the invention

本发明的目的在于解决上述问题，使得太阳电池能够得到更好的保护且成本不会大幅提高，并且能够降低系统的串联电阻、提高太阳电池组件的输出功率。The purpose of the present invention is to solve the above problems, so that the solar cells can be better protected without greatly increasing the cost, and can reduce the series resistance of the system and increase the output power of the solar cell components.

为此，本发明提供一种太阳电池组件，其由两个回路组成，所述两个回路分别位于所述太阳电池组件的两侧，且所述两个回路分别汇流至接线盒，所述接线盒位于所述太阳电池组件的中部。To this end, the present invention provides a solar cell assembly, which is composed of two loops, the two loops are respectively located on both sides of the solar cell assembly, and the two loops are connected to the junction box respectively, and the wiring The case is located in the middle of the solar cell module.

作为优选，所述两个回路分别包括至少一个由多个太阳电池与二极管并联而形成的支路。Preferably, the two loops respectively include at least one branch formed by connecting a plurality of solar cells and diodes in parallel.

作为优选，所述两个回路的至少一个由多个太阳电池与二极管并联而形成的支路均分别汇流至一接线盒。Preferably, at least one branch of the two circuits formed by parallel connection of a plurality of solar cells and diodes is connected to a junction box respectively.

作为优选，所述两个回路的位置相对的两个由多个太阳电池与二极管并联而形成的支路汇流至同一接线盒。Preferably, the two branches opposite to each other of the two loops are connected to the same junction box by connecting a plurality of solar cells and diodes in parallel.

作为优选，每个所述支路包括9-14片太阳电池。Preferably, each branch includes 9-14 solar cells.

作为优选，每个所述支路包括10-12片太阳电池。Preferably, each branch includes 10-12 pieces of solar cells.

作为优选，所述两个回路分别包括3个由多个电池组件与二极管并联而形成的支路，所述两个回路各汇流至3个所述接线盒。Preferably, the two loops respectively include three branches formed by connecting multiple battery components and diodes in parallel, and each of the two loops is connected to three junction boxes.

通过本发明的太阳电池组件，可以有效地保证太阳电池组件中的旁路二极管和太阳电池，不会因温度过高而使组件损坏，并且可以降低太阳电池组件整体的串联电阻，尤其可以显著降低本发明的太阳电池组件组成的系统的串联电阻及系统安装成本。Through the solar cell assembly of the present invention, it can effectively ensure that the bypass diodes and solar cells in the solar cell assembly will not be damaged due to excessive temperature, and the overall series resistance of the solar cell assembly can be reduced, especially significantly reduced The series resistance and system installation cost of the system composed of solar cell components of the present invention.

附图说明Description of drawings

图1为现有技术的太阳电池组件的电路示意图；Fig. 1 is the circuit schematic diagram of the solar cell module of prior art;

图2为现有技术的太阳电池组件连接示意图；FIG. 2 is a schematic diagram of connection of solar cell modules in the prior art;

图3为本发明提供的太阳电池组件的一个实施例的电路示意图；Fig. 3 is a schematic circuit diagram of an embodiment of the solar cell assembly provided by the present invention;

图4为本发明提供的太阳电池组件的一个实施例的示意图；Fig. 4 is the schematic diagram of an embodiment of the solar cell assembly provided by the present invention;

图5为本发明提供的太阳电池组件的一个实施例中两个太阳电池组件相连的示意图；Figure 5 is a schematic diagram of the connection of two solar cell assemblies in one embodiment of the solar cell assembly provided by the present invention;

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

图3为本发明提供的太阳电池组件的一个实施例的电路示意图，图4为本发明提供的太阳电池组件的一个实施例的示意图，如图3及图4所示，本实施例的太阳电池组件6由两个回路组成，两个回路分别位于太阳电池组件的两侧，且两个回路分别汇流至接线盒1，接线盒1位于太阳电池组件的中部。Figure 3 is a schematic circuit diagram of an embodiment of the solar cell assembly provided by the present invention, and Figure 4 is a schematic diagram of an embodiment of the solar cell assembly provided by the present invention, as shown in Figure 3 and Figure 4, the solar cell of this embodiment The assembly 6 is composed of two loops, the two loops are respectively located on both sides of the solar cell assembly, and the two loops are connected to the junction box 1 respectively, and the junction box 1 is located in the middle of the solar cell assembly.

以72片太阳电池组成的太阳电池组件为例，该实施例中，将包括72片太阳电池的太阳电池组件6分为两个由36片太阳电池串联的子太阳电池组件61、62，并且两个回路在太阳电池组件内部没有连通，即两个子太阳电池组件61、62之间在太阳电池组件6内部没有电性连接，两个回路分别汇流至接线盒1，每个接线盒1中包括彼此独立的两个旁路二极管5，分别与两侧的子太阳电池组件61、62并联。虽然附图中为三个接线盒，且每个接线盒中有两个旁路二极管，每个接线盒汇接两个分别来自两个回路的位置相对应的支路，但是附图仅为示例，不作为对本发明的限定，也可以是两个回路中的每个支路分别汇接至一个接线盒或其中几个支路共同汇接至一个接线盒。这样，将太阳电池组件6在内部分成两个独立的子太阳电池组件61、62，且两个子太阳电池组件61、62分别汇流至位于太阳电池组件6中部的接线盒1的方式，使得汇流条3的长度可以缩短，减少串联电阻，提高太阳电池组件的整体输出性能。Taking a solar cell assembly composed of 72 solar cells as an example, in this embodiment, the solar cell assembly 6 including 72 solar cells is divided into two sub-solar cell assemblies 61, 62 that are connected in series with 36 solar cells, and the two The two loops are not connected inside the solar cell assembly, that is, there is no electrical connection between the two sub-solar cell assemblies 61, 62 inside the solar cell assembly 6, and the two loops are respectively connected to the junction box 1, and each junction box 1 includes each other. Two independent bypass diodes 5 are respectively connected in parallel with the sub-solar modules 61 and 62 on both sides. Although there are three junction boxes in the drawing, and there are two bypass diodes in each junction box, and each junction box connects two corresponding branches from two circuits respectively, the drawing is only an example , not as a limitation to the present invention, it is also possible that each branch of the two circuits is respectively connected to a junction box or several of the branches are jointly connected to a junction box. In this way, the solar cell assembly 6 is internally divided into two independent sub-solar cell assemblies 61, 62, and the two sub-solar cell assemblies 61, 62 are connected to the junction box 1 in the middle of the solar cell assembly 6, so that the bus bar The length of 3 can be shortened to reduce the series resistance and improve the overall output performance of the solar cell module.

在申请号为200910137269.3、发明名称为“太阳电池组件边框、太阳电池组件及其安装系统”的发明申请中，公开了利用结构改进的边框和安装梁对太阳电池组件进行安装的技术方案，其可以使得太阳电池组件在安装时使用更少的安装型材，并且快速、方便、高效，省时省力。本实施例的太阳电池组件的接线盒1位于太阳电池组件的中部位置，可以很好地配合上述的申请号为200910137269.3的发明申请的太阳电池组件安装系统。从图5与图2中可以看出，这样可以缩短太阳电池组件之间连接的电缆的长度，从而降低太阳电池组件构成的系统的电阻，提高系统的输出性能且降低系统的成本。In the invention application with the application number 200910137269.3 and the invention name "solar cell module frame, solar cell module and its installation system", a technical solution for installing solar cell modules using structurally improved frames and mounting beams is disclosed, which can The installation of the solar cell module uses less installation profiles, is fast, convenient, efficient, and saves time and effort. The junction box 1 of the solar cell assembly of this embodiment is located in the middle of the solar cell assembly, which can be well matched with the solar cell assembly installation system of the above-mentioned application number 200910137269.3. It can be seen from Fig. 5 and Fig. 2 that the length of the cables connected between the solar cell modules can be shortened, thereby reducing the resistance of the system formed by the solar cell modules, improving the output performance of the system and reducing the cost of the system.

在本发明的另一个实施例中，上述的子太阳电池组件61、62(即，两个回路)包括至少一个支路，每个支路由多个太阳电池与二极管并联而成，其中，每个支路可包括9-14片太阳电池。优选的，每个支路可包括10-12片太阳电池，支路之间可以通过太阳电池组件内部的导线(汇流条)进行连接。以72片太阳电池的太阳电池组件为例，每个子太阳电池组件61、62均可以包括3个支路，其中每个支路可以由12片太阳电池4与旁路二极管5并联而成，然后经过汇流条3汇流至位于太阳电池组件中部位置的3个接线盒1中，二极管5在接线盒中，再从接线盒1中引出电缆2。以60片太阳电池的太阳电池组件为例，每个子太阳电池组件61、62均可以包括3个支路，其中每个支路可以由10片太阳电池4与旁路二极管5并联而成，然后经过汇流条3汇流至位于太阳电池组件中部位置的3个接线盒1中，再从接线盒1中引出电缆2。上述的每个接线盒1中包括彼此独立的两个旁路二极管5，分别与两侧的每个支路并联。In another embodiment of the present invention, the above-mentioned sub-solar cell assemblies 61, 62 (that is, two loops) include at least one branch, and each branch is formed by connecting multiple solar cells and diodes in parallel, wherein each A branch circuit may include 9-14 solar cells. Preferably, each branch may include 10-12 pieces of solar cells, and the branches may be connected through wires (bus bars) inside the solar cell module. Taking a solar cell assembly with 72 solar cells as an example, each sub-solar cell assembly 61, 62 can include 3 branches, wherein each branch can be formed by connecting 12 solar cells 4 and bypass diodes 5 in parallel, and then Through the bus bar 3, it flows into the three junction boxes 1 located in the middle of the solar cell module, the diode 5 is in the junction box, and the cable 2 is drawn out from the junction box 1. Taking a solar cell assembly with 60 solar cells as an example, each sub-solar cell assembly 61, 62 can include 3 branches, wherein each branch can be formed by connecting 10 solar cells 4 and bypass diodes 5 in parallel, and then Converge through the bus bar 3 into the three junction boxes 1 located in the middle of the solar cell module, and then lead out the cables 2 from the junction box 1 . Each junction box 1 above includes two bypass diodes 5 independent of each other, which are respectively connected in parallel with each branch on both sides.

这样，由于串联太阳电池数量减少，以12片太阳电池为例，12片太阳电池的反向电压在7V左右，因此当太阳电池组件发生热斑效应时，即使旁路二极管被击穿后，也可保证发生热斑效应时太阳电池不至于因温度过高而被烧毁，即使是目前性能相对较差(Irev＜2A/-8V)的太阳电池也不会出现问题。而且从图5与图2中可以看出，这样可以缩短太阳电池组件之间连接的电缆的长度，从而降低太阳电池组件构成的系统的电阻，提高系统的输出性能且降低系统的成本。In this way, due to the reduction in the number of solar cells connected in series, taking 12 solar cells as an example, the reverse voltage of the 12 solar cells is about 7V, so when the solar cell module has a hot spot effect, even after the bypass diode is broken down, the It can ensure that the solar cell will not be burned due to excessive temperature when the hot spot effect occurs, and even the current solar cell with relatively poor performance (Irev<2A/-8V) will not have problems. Moreover, it can be seen from Fig. 5 and Fig. 2 that the length of the cables connected between the solar cell modules can be shortened, thereby reducing the resistance of the system formed by the solar cell modules, improving the output performance of the system and reducing the cost of the system.

总之，以上所述仅为本发明的实施例，并非用于限定本发明的保护范围，而是用于说明本发明。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。In a word, the above descriptions are only examples of the present invention, not for limiting the protection scope of the present invention, but for illustrating the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. a solar module is characterized in that, it is made up of two loops, and described two loops lay respectively at the both sides of described solar module, and described two loops conflux respectively to terminal box, and described terminal box is positioned at the middle part of described solar module.
2. solar module as claimed in claim 1 is characterized in that, described two loops comprise at least one and branch road that form in parallel with diode by a plurality of solar cells respectively.
3. solar module as claimed in claim 2 is characterized in that, branch road that form confluxes to a terminal box at least one of described two loops respectively by a plurality of solar cells are in parallel with diode.
4. solar module as claimed in claim 3 is characterized in that, branch road that form confluxes to same terminal box relative two in the position in described two loops by a plurality of solar cells are in parallel with diode.
5. as each described solar module of claim 2 to 4, it is characterized in that each described branch road comprises 9-14 sheet solar cell.
6. solar module as claimed in claim 5 is characterized in that, each described branch road comprises 10-12 sheet solar cell.
7. any as described above described solar module of claim is characterized in that, described two loops comprise 3 and branch roads of forming in parallel with diode by a plurality of solar cells respectively, respectively confluxes to 3 described terminal boxes in described two loops.
CN200910179860.5A 2009-10-15 2009-10-15 Solar module Pending CN102044587A (en)

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CN102779883A (en) * 2012-05-30 2012-11-14 碧辟普瑞太阳能有限公司 Solar photovoltaic module based on solar cell units
CN102779883B (en) * 2012-05-30 2015-04-08 碧辟普瑞太阳能有限公司 Solar photovoltaic module based on solar cell units
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CN102931241A (en) * 2012-11-26 2013-02-13 晶科能源有限公司 Crystalline silicon component
CN103354245A (en) * 2013-07-02 2013-10-16 浙江正泰太阳能科技有限公司 Crystalline silicon battery assembly and crystalline silicon battery system
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CN107452826A (en) * 2017-07-26 2017-12-08 河北曹妃甸汉能薄膜太阳能有限公司 Hull cell terminal plate, sub- battery component and its assemble method
CN107947324A (en) * 2017-12-11 2018-04-20 杭州博阳太阳能科技有限公司 A kind of solar electric power supply system
CN108615777A (en) * 2018-06-15 2018-10-02 浙江晶科能源有限公司 Photovoltaic module
CN108615777B (en) * 2018-06-15 2024-03-22 浙江晶科能源有限公司 Photovoltaic module
CN109638099A (en) * 2018-12-25 2019-04-16 四川钟顺太阳能开发有限公司 A kind of electrical connection methods of solar module and solar module using this method

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