WO2022193845A1

WO2022193845A1 - Photovoltaic module

Info

Publication number: WO2022193845A1
Application number: PCT/CN2022/074058
Authority: WO
Inventors: 陈辉; 贾行; 董经兵; 许涛
Original assignee: 苏州阿特斯阳光电力科技有限公司; 常熟阿特斯阳光电力科技有限公司
Priority date: 2021-03-17
Filing date: 2022-01-26
Publication date: 2022-09-22

Abstract

A photovoltaic module (100), comprising: a plurality of cell strings (31), each of the cell strings (31) comprising a plurality of cells (311) arranged in an extension direction of the cell strings (31) perpendicular to a string arrangement direction; and a first bus bar (321) and a second bus bar (322), wherein the first bus bar (321) extends in the string arrangement direction, the first bus bar (321) is electrically connected to first interconnection structural members (7), the second bus bar (322) is electrically connected to the first bus bar (321), and the second bus bar (322) extends in the extension direction of the cell strings (31); and the first bus bar (321) is located on back faces of the cells (311) in the multiple cell strings (31), or at least two adjacent cells (311) of each of the cell strings (31) are arranged at intervals to form gaps, and the first bus bar (321) is located in the gaps.

Description

光伏组件Photovoltaic modules

技术领域technical field

本公开涉及光伏制造技术领域，尤其是涉及一种光伏组件。The present disclosure relates to the technical field of photovoltaic manufacturing, and in particular, to a photovoltaic assembly.

背景技术Background technique

相关技术中，光伏组件的每个电池串通常包括两个子电池串，沿电池串的延伸方向、相邻两个子电池串之间通常通过中心汇流条并联连接。然而，这样会导致位于中心汇流条两侧的子电池串的焊带均需要与中心汇流条相连，工艺制程较为复杂，光伏组件的生产效率较低。In the related art, each cell string of a photovoltaic module generally includes two sub-cell strings, and along the extending direction of the cell string, two adjacent sub-cell strings are usually connected in parallel through a central bus bar. However, in this way, the welding strips of the sub-cell strings located on both sides of the central bus bar need to be connected to the central bus bar, the process is complicated, and the production efficiency of the photovoltaic module is low.

公开内容public content

本公开旨在至少解决现有技术中存在的技术问题之一。为此，本公开的一个目的在于提出一种光伏组件，所述光伏组件的工艺制程更加简单，生产效率较高。The present disclosure aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present disclosure is to provide a photovoltaic module with simpler process and higher production efficiency.

根据本公开实施例的光伏组件，包括：多个电池串，多个所述电池串沿串排布方向排列，每个所述电池串包括沿与所述串排布方向垂直的电池串延伸方向排布的多个电池片，每个所述电池串内的相邻两个所述电池片之间通过第一互连结构件串联连接；十字汇流条，所述十字汇流条包括第一汇流条和第二汇流条，所述第一汇流条沿所述串排布方向延伸，所述第一汇流条与所述第一互连结构件电连接，所述第二汇流条与所述第一汇流条电连接，所述第二汇流条沿所述电池串延伸方向延伸；其中，所述第一汇流条位于多个所述电池串内的所述电池片的背面，或每个所述电池串的至少相邻两个所述电池片间隔设置以形成片间隙，所述第一汇流条位于所述片间隙内。A photovoltaic module according to an embodiment of the present disclosure includes: a plurality of battery strings, the plurality of battery strings are arranged along a string arrangement direction, each of the battery strings includes a battery string extension direction perpendicular to the string arrangement direction A plurality of battery sheets are arranged, and two adjacent battery sheets in each of the battery strings are connected in series through a first interconnection structure; a cross bus bar, the cross bus bar includes a first bus bar and a second bus bar, the first bus bar extends along the string arrangement direction, the first bus bar is electrically connected to the first interconnection structure, and the second bus bar is connected to the first The bus bars are electrically connected, and the second bus bars extend along the extending direction of the battery strings; wherein, the first bus bars are located on the back of the battery sheets in the plurality of battery strings, or each of the batteries At least two adjacent battery sheets of the string are arranged at intervals to form a sheet gap, and the first bus bar is located in the sheet gap.

根据本公开实施例的光伏组件，通过设置多个电池串及包括第一汇流条和第二汇流条的十字汇流条，并使多个电池串沿串排布方向排列、每个电池串包括沿与串排布方向垂直的电池串延伸方向排布的多个电池片，且第一汇流条位于多个电池串内的电池片的背面，或第一汇流条位于片间隙内与片间隙内的多个电池串的第一互连结构件均电连接，第二汇流条与第一汇流条电连接，一方面，可以使光伏组件的工艺制程更加简单，提高光伏组件的生产效率；另一方面，电池串内的电池片的排布可以更加紧凑，从而可以减小光伏组件的占用空间，提高光伏组件单位面积的发电量，且可以降低电池片裂片的风险，提高光伏组件的可靠性。According to the photovoltaic module of the embodiment of the present disclosure, by arranging a plurality of battery strings and a cross bus bar including a first bus bar and a second bus bar, and arranging the plurality of battery strings along the string arrangement direction, each battery string includes A plurality of battery slices arranged in the extension direction of the battery string perpendicular to the string arrangement direction, and the first bus bar is located on the back of the battery slices in the plurality of battery strings, or the first bus bar is located between the chip gap and the chip gap. The first interconnecting structural members of the plurality of battery strings are all electrically connected, and the second bus bars are electrically connected to the first bus bars. On the one hand, the process of photovoltaic modules can be simplified and the production efficiency of photovoltaic modules can be improved; on the other hand , the arrangement of the cells in the battery string can be more compact, which can reduce the space occupied by the photovoltaic module, improve the power generation per unit area of the photovoltaic module, reduce the risk of cell splits, and improve the reliability of the photovoltaic module.

根据本公开的一些实施例，当所述第一汇流条位于多个所述电池串内的所述电池片的背面时，所述第一汇流条的至少部分位于多个所述电池串的其中一个所述电池片的背面；或。According to some embodiments of the present disclosure, when the first bus bar is located on the backside of the battery sheets in the plurality of battery strings, at least a portion of the first bus bar is located in the plurality of battery strings. a back side of the battery sheet; or.

所述第一汇流条的宽度方向的两侧分别位于在所述电池串延伸方向上相邻两个所述电池片的背面。Both sides of the first bus bar in the width direction are respectively located on the backsides of two adjacent battery sheets in the extending direction of the battery string.

根据本公开的一些实施例，当所述第一汇流条位于所述片间隙内时，所述第一汇流条的宽度小于对应的所述片间隙的宽度，所述第一汇流条的宽度与对应的所述片间隙的宽度之差的绝对值为ΔL，其中，所述ΔL满足：4mm≤ΔL≤10mm。According to some embodiments of the present disclosure, when the first bus bar is located in the chip gap, the width of the first bus bar is smaller than the width of the corresponding chip gap, and the width of the first bus bar is the same as that of the chip gap. The absolute value of the difference between the widths of the corresponding sheet gaps is ΔL, where the ΔL satisfies: 4mm≤ΔL≤10mm.

根据本公开的一些实施例，当所述第一汇流条位于所述片间隙内时，每个所述电池串的相邻两个所述电池片之间均具有所述片间隙，多个所述片间隙包括第一片间隙和多个第二片间隙，每个所述第二片间隙的宽度小于所述第一片间隙的宽度，所述第一汇流条位于所述第一片间隙内，所述光伏组件中除所述第一片间隙之外的所述片间隙为所述第二片间隙。According to some embodiments of the present disclosure, when the first bus bar is located in the sheet gap, there is the sheet gap between two adjacent cell sheets of each of the battery strings, and a plurality of the sheet gaps are formed. The chip gap includes a first chip gap and a plurality of second chip gaps, the width of each second chip gap is smaller than the width of the first chip gap, and the first bus bar is located in the first chip gap , the sheet gap other than the first sheet gap in the photovoltaic module is the second sheet gap.

根据本公开的一些实施例，所述第一片间隙为S ₁，所述第二片间隙为S ₂，其中，所述S ₁、S ₂满足：3mm＜S ₁≤25mm，-2mm≤S ₂≤3mm。 According to some embodiments of the present disclosure, the first sheet gap is S ₁ , and the second sheet gap is S ₂ , wherein S ₁ and S ₂ satisfy: 3mm<S ₁ ≤25mm, -2mm≤S ₂ ≤3mm.

根据本公开的一些实施例，所述第一片间隙内包含的电池片的数量为N ₁，所述第一片间隙内的多个所述电池片中的每相邻两个之间的所述片间隙为所述第二片间隙，其中，所述N ₁满足：N ₁≥20。 According to some embodiments of the present disclosure, the number of cell sheets contained in the first sheet gap is N ₁ , and all the cell sheets between each adjacent two of the plurality of cell sheets in the first sheet gap are N 1 . The sheet gap is the second sheet gap, wherein the N ₁ satisfies: N ₁ ≥20.

根据本公开的一些实施例，所述第二汇流条位于相邻两个所述电池串之间的间隙处；或所述第二汇流条的至少部分位于所述电池串的背面。According to some embodiments of the present disclosure, the second bus bar is located at a gap between two adjacent battery strings; or at least part of the second bus bar is located on the back of the battery string.

根据本公开的一些实施例，所述第一汇流条的宽度为W ₁，所述第一汇流条的厚度为T ₁，所述第二汇流条的宽度为W ₂，所述第二汇流条的厚度为T ₂，其中，所述W ₁、W ₂、T ₁、T ₂分别满足：3mm≤W ₁≤10mm，3mm≤W ₂≤10mm，0.15mm≤T ₁≤0.6mm，0.15mm≤T ₂≤0.6mm。 According to some embodiments of the present disclosure, the width of the first bus bar is W ₁ , the thickness of the first bus bar is T ₁ , the width of the second bus bar is W ₂ , and the second bus bar is The thickness is T ₂ , wherein the W ₁ , W ₂ , T ₁ , and T ₂ satisfy respectively: 3mm≤W ₁ ≤10mm, 3mm≤W ₂ ≤10mm, 0.15mm≤T ₁ ≤0.6mm, 0.15mm≤ T ₂ ≤ 0.6mm.

根据本公开的一些实施例，所述第二汇流条和所述第一汇流条为一体结构。According to some embodiments of the present disclosure, the second bus bar and the first bus bar are integral structures.

根据本公开的一些实施例，多个所述电池串的两端分别为正极引出端和负极引出端；所述光伏组件还包括：多个旁路二极管，多个所述旁路二极管均通过所述第二汇流条反向并联在所述正极引出端和所述负极引出端之间，至少一个所述旁路二极管位于所述第二汇流条与所述第一汇流条的连接处与所述正极引出端之间，至少一个所述旁路二极管位于所述第二汇流条与所述第一汇流条的连接处与所述负极引出端之间。According to some embodiments of the present disclosure, the two ends of the plurality of battery strings are respectively a positive terminal and a negative terminal; the photovoltaic module further includes: a plurality of bypass diodes, and the plurality of bypass diodes pass through the The second bus bar is connected in anti-parallel between the positive terminal and the negative terminal, and at least one bypass diode is located at the connection between the second bus bar and the first bus bar and the Between the positive terminal, at least one bypass diode is located between the connection between the second bus bar and the first bus bar and the negative terminal.

根据本公开的一些实施例，多个所述旁路二极管分别位于所述第二汇流条的两端。According to some embodiments of the present disclosure, a plurality of the bypass diodes are located at both ends of the second bus bar, respectively.

根据本公开的一些实施例，所述第二汇流条与所述第一汇流条的连接处与所述正极引出端之间设有并联连接的至少两个所述旁路二极管；和/或所述第二汇流条与所述第一汇流条的连接处与所述负极引出端之间设有并联连接的至少两个所述旁路二极管。According to some embodiments of the present disclosure, at least two bypass diodes connected in parallel are provided between the connection between the second bus bar and the first bus bar and the positive terminal; and/or the At least two bypass diodes connected in parallel are arranged between the connection between the second bus bar and the first bus bar and the negative terminal.

根据本公开的一些实施例，所述光伏组件还包括：多个第二互连结构件，多个所述第二互连结构件与多个所述电池串的沿所述电池串延伸方向的两端的所述电池片电连接，且每个所述第二互连结构件的远离所述电池串中心的一端延伸至超出对应的所述电池片的远离所述电池串中心的一侧边缘；多个端部汇流条，多个所述端部汇流条分别位于多个所述电池串的沿所述电池串延伸方向的两端，每个所述端部汇流条沿所述串排布方向延伸，每个所述端部汇流条与多个所述电池串的多个所述第二互连结构件均相连以使多个所述电池串并联连接，每个所述端部汇流条上设有引出线，所述旁路二极管连接在所述第二汇流条的端部与对应的所述引出线之间。According to some embodiments of the present disclosure, the photovoltaic assembly further includes: a plurality of second interconnecting structure members, a plurality of the second interconnecting structure members and a plurality of the battery strings along the extending direction of the battery strings The battery sheets at both ends are electrically connected, and one end of each of the second interconnecting structures away from the center of the battery string extends beyond the edge of one side of the corresponding battery sheet away from the center of the battery string; a plurality of end bus bars, the plurality of end bus bars are respectively located at two ends of the plurality of battery strings along the extending direction of the battery strings, each of the end bus bars is arranged along the string arrangement direction extending, each of the end bus bars is connected to a plurality of the second interconnecting structure members of the plurality of battery strings to connect the plurality of battery strings in parallel, and each of the end bus bars is connected A lead wire is provided, and the bypass diode is connected between the end of the second bus bar and the corresponding lead wire.

根据本公开的一些实施例，所述光伏组件进一步包括：正面盖板；背面盖板，所述背面盖板设在所述正面盖板的厚度方向上的一侧，多个所述电池串位于所述正面盖板和所述背面盖板之间。According to some embodiments of the present disclosure, the photovoltaic assembly further includes: a front cover plate; a back cover plate, the back cover plate is provided on one side in the thickness direction of the front cover plate, and the plurality of battery strings are located on one side of the front cover plate in the thickness direction. between the front cover and the back cover.

根据本公开的一些实施例，至少一个所述旁路二极管位于所述正面盖板和所述背面盖板之间；或所述背面盖板上设有沿所述背面盖板的厚度方向贯通的两个过线孔，所述光伏组件进一步包括至少一个接线盒，所述接线盒设在所述背面盖板的远离所述正面盖板的一侧表面上，至少一个所述旁路二极管设在所述接线盒内，所述第二汇流条的端部和所述引出线分别穿过同一所述过线孔与所述旁路二极管相连。According to some embodiments of the present disclosure, at least one of the bypass diodes is located between the front cover plate and the back cover plate; Two wire holes, the photovoltaic assembly further includes at least one junction box, the junction box is arranged on the side surface of the back cover plate away from the front cover plate, and at least one of the bypass diodes is arranged on the side surface of the back cover plate. In the junction box, the end of the second bus bar and the lead wire are respectively connected to the bypass diode through the same wire hole.

根据本公开的一些实施例，每个所述电池片为完整电池片的X分之一，其中，所述X为大于等于3的正整数，所述串排布方向为所述电池片的长度延伸方向，所述电池串延伸方向为所述电池片的宽度延伸方向。According to some embodiments of the present disclosure, each of the battery slices is one-X part of a complete battery slice, wherein the X is a positive integer greater than or equal to 3, and the string arrangement direction is the length of the battery slices The extension direction, the extension direction of the battery string is the extension direction of the width of the battery sheet.

根据本公开的一些实施例，每个所述电池片的长度为L，其中，所述L满足：200mm≤L≤240mm。According to some embodiments of the present disclosure, the length of each of the battery sheets is L, wherein the L satisfies: 200mm≤L≤240mm.

根据本公开的一些实施例，每个所述电池片的厚度方向上的一侧表面上设有多个栅线，每个所述栅线沿所述第一互连结构件的延伸方向延伸，且所述第一互连结构件与对应的所述栅线电连接，每个所述电池片的所述一侧表面上的所述栅线的数量为N，其中，所述N满足：5≤N≤7。According to some embodiments of the present disclosure, a plurality of grid lines are provided on one side surface in the thickness direction of each of the battery sheets, and each of the grid lines extends along an extension direction of the first interconnection structure member, And the first interconnection structure is electrically connected to the corresponding grid lines, and the number of the grid lines on the one side surface of each of the battery sheets is N, where the N satisfies: 5 ≤N≤7.

根据本公开的一些实施例，所述第一互连结构件包括彼此相连的第一连接段和第二连接段，所述第一连接段为非扁平段，所述第一连接段连接在所述电池片的正面，所述第二连接段为扁平段，所述第二连接段连接在相邻的所述电池片的背面。According to some embodiments of the present disclosure, the first interconnecting structural member includes a first connecting segment and a second connecting segment connected to each other, the first connecting segment is a non-flat segment, and the first connecting segment is connected at the The front side of the battery sheet, the second connection segment is a flat segment, and the second connection segment is connected to the back side of the adjacent battery sheet.

根据本公开的一些实施例，所述第一互连结构件的至少与所述第一汇流条相连的部分的厚度为T ₃，其中，所述T ₃满足：0.05mm≤T ₃≤0.2mm。 According to some embodiments of the present disclosure, a thickness of at least a portion of the first interconnection structure connected to the first bus bar is T ₃ , wherein T ₃ satisfies: 0.05mm≤T ₃ ≤0.2mm .

本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。Additional aspects and advantages of the present disclosure will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the present disclosure.

附图说明Description of drawings

本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

图1是根据本公开实施例的电池串的结构示意图；FIG. 1 is a schematic structural diagram of a battery string according to an embodiment of the present disclosure;

图2是根据本公开实施例的电池串的结构示意图；FIG. 2 is a schematic structural diagram of a battery string according to an embodiment of the present disclosure;

图3是根据本公开实施例的多个电池串和第一汇流条的结构示意图；3 is a schematic structural diagram of a plurality of battery strings and a first bus bar according to an embodiment of the present disclosure;

图4是根据本公开另一个实施例的多个电池串和第一汇流条的结构示意图；4 is a schematic structural diagram of a plurality of battery strings and a first bus bar according to another embodiment of the present disclosure;

图5是根据本公开实施例的光伏组件的结构示意图；5 is a schematic structural diagram of a photovoltaic assembly according to an embodiment of the present disclosure;

图6是根据本公开实施例的光伏组件的电路示意图。6 is a schematic circuit diagram of a photovoltaic assembly according to an embodiment of the present disclosure.

附图标记：Reference number:

100：光伏组件；100: photovoltaic modules;

1：正面盖板；2：背面盖板；1: Front cover; 2: Back cover;

3：电池层；31：电池串；311：电池片；3: battery layer; 31: battery string; 311: battery slice;

312：第一片间隙；313：第二片间隙；312: The first gap; 313: The second gap;

32：十字汇流条；321：第一汇流条；322：第二汇流条；32: Cross bus bar; 321: First bus bar; 322: Second bus bar;

4：正面封装胶膜；5：背面封装胶膜；4: Front encapsulation film; 5: Back encapsulation film;

6：旁路二极管；7：第一互连结构件；6: Bypass diode; 7: First interconnection structure;

8：端部汇流条；81：引出线；9：第二互连结构件。8: end bus bar; 81: lead wire; 9: second interconnection structural member.

具体实施方式Detailed ways

下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure and should not be construed as a limitation of the present disclosure.

在本公开的描述中，需要理解的是，术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。In the description of the present disclosure, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that References to devices or elements that must have, be constructed, and operate in a particular orientation are not to be construed as limitations of the present disclosure.

需要说明的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。It should be noted that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature.

下面参考图1-图6描述根据本公开实施例的光伏组件100。The photovoltaic assembly 100 according to an embodiment of the present disclosure is described below with reference to FIGS. 1-6 .

如图2-图5所示，根据本公开实施例的光伏组件100，包括多个电池串31和十字汇流条32。As shown in FIGS. 2-5 , the photovoltaic assembly 100 according to the embodiment of the present disclosure includes a plurality of battery strings 31 and cross bus bars 32 .

多个电池串31沿串排布方向排列，每个电池串31包括沿与串排布方向垂直的电池串31延伸方向排布的多个电池片311，每个电池串31内的相邻两个电池片311之间通过第一互连结构件7串联连接。由此，第一互连结构件7可以将电池串31的多个电池片311通过光生伏特效应产生的电流导出，保证光伏组件100的具有较高的输出功率。而且，由于多个电池串31沿串排布方向并联连接且每个电池串31的多个电池片311沿电池串31延伸方向串联连接，电路设计简单，所有的电池片311可以规整且相对紧密地排列，在方便电池串31内相邻电池片311之间的电连接的同时，有利于整个光伏组件100占用空间的减小，使光伏组件100可以安装在屋顶上。另外，与现有的每个电池串31包括两个子电池串的光伏组件100相比，每个电池串31为完整的长串，电池串31内的第一互连结构件7可以无需由于与中心汇流条相连而断开，从而方便电池串31的铺设，简化了光伏组件100的工艺制程，进而可以有效提高光伏组件100的生产效率。The plurality of battery strings 31 are arranged along the string arrangement direction. The battery sheets 311 are connected in series through the first interconnecting structural member 7 . Therefore, the first interconnection structure 7 can lead the currents generated by the photovoltaic effect of the plurality of cells 311 of the cell string 31 to lead out, so as to ensure that the photovoltaic module 100 has a higher output power. Moreover, since the plurality of battery strings 31 are connected in parallel along the string arrangement direction and the plurality of battery pieces 311 of each battery string 31 are connected in series along the extending direction of the battery string 31, the circuit design is simple, and all the battery pieces 311 can be regular and relatively close together The arrangement is convenient for the electrical connection between adjacent cells 311 in the cell string 31, and at the same time, it is beneficial to reduce the space occupied by the entire photovoltaic assembly 100, so that the photovoltaic assembly 100 can be installed on the roof. In addition, compared with the existing photovoltaic module 100 in which each cell string 31 includes two sub-cell strings, each cell string 31 is a complete long string, and the first interconnecting structure 7 in the cell string 31 can be eliminated due to the The central bus bars are connected and disconnected, thereby facilitating the laying of the battery strings 31 , simplifying the process of the photovoltaic assembly 100 , and thereby effectively improving the production efficiency of the photovoltaic assembly 100 .

十字汇流条32包括第一汇流条321和第二汇流条322，第一汇流条321沿串排布方向延伸，第一汇流条321与第一互连结构件7电连接，第二汇流条322与第一汇流条321电连接，第二汇流条322沿电池串31延伸方向延伸。其中，第一汇流条321位于多个电池串31内的电池片311的背面，或每个电池串31的至少相邻两个电池片311间隔设置以形成片间隙，第一汇流条321位于片间隙内。The cross bus bar 32 includes a first bus bar 321 and a second bus bar 322, the first bus bar 321 extends along the string arrangement direction, the first bus bar 321 is electrically connected with the first interconnection structure 7, and the second bus bar 322 Electrically connected to the first bus bar 321 , the second bus bar 322 extends along the extending direction of the battery string 31 . Wherein, the first bus bar 321 is located on the back of the battery slices 311 in the plurality of battery strings 31, or at least two adjacent battery slices 311 of each battery string 31 are arranged at intervals to form a slice gap, and the first bus bar 321 is located in the slice. within the gap.

例如，在图3和图4的示例中，第一汇流条321和第二汇流条322均呈直线延伸，第一汇流条321和第二汇流条322相互垂直，多个电池串31的位于第一汇流条321同一侧的电池片311的数量相等。光伏组件100包括并联连接的五个电池串31，第一汇流条321与五个电池串31的第一互连结构件7电连接。由此，通过设置上述第一汇流条321和第二汇流条322，第一汇流条321可以将多个电池串31的电池片311通过光生伏特效应产生的电流传递至第二汇流条322，并最终通过第二汇流条322导出，保证光伏组件100具有较高的输出功率。For example, in the examples of FIG. 3 and FIG. 4 , both the first bus bar 321 and the second bus bar 322 extend in a straight line, the first bus bar 321 and the second bus bar 322 are perpendicular to each other, and the plurality of battery strings 31 are located in the first The number of cells 311 on the same side of a bus bar 321 is equal. The photovoltaic assembly 100 includes five cell strings 31 connected in parallel, and the first bus bar 321 is electrically connected to the first interconnection structure 7 of the five cell strings 31 . Thus, by arranging the first bus bar 321 and the second bus bar 322, the first bus bar 321 can transmit the current generated by the cells 311 of the plurality of battery strings 31 to the second bus bar 322 through the photovoltaic effect, and Finally, it is led out through the second bus bar 322 to ensure that the photovoltaic module 100 has a higher output power.

其中，结合图4，由于第一汇流条321位于多个电池片311的背面，第一汇流条321 可以无需占用光伏组件100的长度方向和宽度方向上的空间，电池串31内相邻两个电池片311之间的距离可以较小，从而使相同面积的光伏组件100可以容纳更多数量的电池片311，提高光伏组件100单位面积的发电量。4 , since the first bus bar 321 is located on the back of the plurality of cells 311 , the first bus bar 321 does not need to occupy the space in the length and width directions of the photovoltaic module 100 , and two adjacent cells in the cell string 31 The distance between the cell sheets 311 can be smaller, so that the photovoltaic module 100 of the same area can accommodate a larger number of cell sheets 311 , thereby increasing the power generation per unit area of the photovoltaic module 100 .

结合图3，通过使第一汇流条321位于片间隙内，与现有的光伏组件相比，第一汇流条321可以无需设在电池片311的背面，这样可以避免第一汇流条321与相邻的电池片311接触，从而可以降低电池片311裂片的风险，提高光伏组件100的可靠性。With reference to FIG. 3 , by making the first bus bar 321 located in the chip gap, compared with the existing photovoltaic modules, the first bus bar 321 does not need to be arranged on the back of the cell 311 , which can avoid the first bus bar 321 and the phase The adjacent cells 311 are in contact, so that the risk of splitting of the cells 311 can be reduced, and the reliability of the photovoltaic module 100 can be improved.

图3和图4中显示了五个电池串31用于示例说明的目的，但是普通技术人员在阅读了本申请的技术方案之后、显然可以理解将该方案应用到其它数量的电池串31的技术方案中，这也落入本公开的保护范围之内。Five battery strings 31 are shown in FIG. 3 and FIG. 4 for illustrative purposes, but after reading the technical solution of the present application, it is obvious that a person of ordinary skill can understand the technology of applying the solution to other numbers of battery strings 31 solution, this also falls within the protection scope of the present disclosure.

根据本公开实施例的光伏组件100，通过设置多个电池串31及包括第一汇流条321和第二汇流条322的十字汇流条32，并使多个电池串31沿串排布方向排列、每个电池串31包括沿与串排布方向垂直的电池串31延伸方向排布的多个电池片311，且第一汇流条321位于多个电池串31内的电池片311的背面，或第一汇流条321位于片间隙内与片间隙内的多个电池串31的第一互连结构件7均电连接，第二汇流条322与第一汇流条321电连接，一方面，可以使光伏组件100的工艺制程更加简单，提高光伏组件100的生产效率；另一方面，电池串31内的电池片311的排布可以更加紧凑，从而可以减小光伏组件100的占用空间，提高光伏组件100单位面积的发电量，且可以降低电池片311裂片的风险，提高光伏组件100的可靠性。According to the photovoltaic module 100 of the embodiment of the present disclosure, by arranging the plurality of battery strings 31 and the cross bus bars 32 including the first bus bar 321 and the second bus bar 322, and arranging the plurality of battery strings 31 along the string arrangement direction, Each battery string 31 includes a plurality of battery slices 311 arranged along the extending direction of the battery string 31 perpendicular to the string arrangement direction, and the first bus bar 321 is located on the back of the battery slices 311 in the plurality of battery strings 31 , or the first bus bar 321 A bus bar 321 located in the chip gap is electrically connected to the first interconnecting structural members 7 of the plurality of battery strings 31 in the chip gap, and the second bus bar 322 is electrically connected to the first bus bar 321. On the one hand, it can make photovoltaic The manufacturing process of the module 100 is simpler, and the production efficiency of the photovoltaic module 100 is improved; on the other hand, the arrangement of the cells 311 in the battery string 31 can be more compact, so that the occupied space of the photovoltaic module 100 can be reduced, and the photovoltaic module 100 can be improved. The power generation per unit area can be reduced, and the risk of splitting of the cell 311 can be reduced, and the reliability of the photovoltaic module 100 can be improved.

在本公开的一些可选实施例中，结合图4和图5，当第一汇流条321位于多个电池串31内的电池片311的背面时，第一汇流条321的至少部分位于多个电池串31的其中一个电池片311的背面。为了方便描述，下面将与第一汇流条321接触的电池串31称为“接触电池串”，第一汇流条321位于对应的接触电池串中的其中一个电池片311的背面，且第一汇流条321的与对应的接触电池串的电池片311接触的部分可以被对应的电池片311完全覆盖或部分覆盖。此时所有的电池串31可以均为接触电池串；或者，还可以是多个电池串31中的其中一部分为接触电池串。由此，通过上述设置，第一汇流条321与电池片311的接触面积相对较大，从而可以降低电池片311裂片的风险，提高光伏组件100的长期可靠性。In some optional embodiments of the present disclosure, with reference to FIGS. 4 and 5 , when the first bus bar 321 is located on the backside of the battery sheets 311 in the plurality of battery strings 31 , at least part of the first bus bar 321 is located in the plurality of battery strings 31 . The back side of one of the battery sheets 311 of the battery string 31 . For the convenience of description, the battery string 31 in contact with the first bus bar 321 is hereinafter referred to as a “contact battery string”. The first bus bar 321 is located on the back of one of the battery sheets 311 in the corresponding contact battery string, and the first bus bar The portion of the strip 321 that is in contact with the corresponding cell sheet 311 that contacts the cell string may be completely or partially covered by the corresponding cell sheet 311 . In this case, all the battery strings 31 may be contact battery strings; or, some of the plurality of battery strings 31 may be contact battery strings. Therefore, through the above arrangement, the contact area between the first bus bar 321 and the cell 311 is relatively large, thereby reducing the risk of splitting of the cell 311 and improving the long-term reliability of the photovoltaic module 100 .

进一步地，参照图3-图5，第一汇流条321可以位于对应的多个电池片311的在电池串31延伸方向上的同一侧。例如，在图5的示例中，五个电池串31均为接触电池串，第一汇流条321位于每个电池串31的其中一个电池片311的背面，且第一汇流条321位于五个电池串31的五个电池片311的同一侧。如此设置，所有的电池片311可以规整且相对紧密地排列，一方面，方便电池串31内相邻两个电池片311之间的电连接，另一方面，有利于整个光伏组件100占用空间的减小，且可以提高光伏组件100的外形美观性。Further, referring to FIGS. 3-5 , the first bus bars 321 may be located on the same side of the corresponding plurality of battery sheets 311 in the extending direction of the battery string 31 . For example, in the example of FIG. 5 , the five battery strings 31 are all contact battery strings, the first bus bar 321 is located on the back of one of the battery sheets 311 of each battery string 31 , and the first bus bar 321 is located on the five batteries The same side of the five cells 311 of the string 31 . In this way, all the cells 311 can be arranged in a regular and relatively close arrangement. On the one hand, the electrical connection between the two adjacent cells 311 in the cell string 31 is facilitated, and on the other hand, it is beneficial to the space occupied by the entire photovoltaic module 100. It can be reduced and the appearance aesthetics of the photovoltaic module 100 can be improved.

当然，本公开不限于此，在本公开的另一些可选实施例中，第一汇流条321的宽度方向的两侧可以分别位于在电池串31延伸方向上相邻两个电池片311的背面，此时第一汇流条321可以与同一电池串31的相邻两个电池片311接触，第一汇流条321的宽度方向上的两侧可以与相邻两个电池片311的边缘搭接。可以理解的是，第一汇流条321的设置位置可以根据实际需求具体确定，以更好地满足实际应用。Of course, the present disclosure is not limited thereto. In other optional embodiments of the present disclosure, both sides of the width direction of the first bus bar 321 may be respectively located on the backsides of two adjacent battery sheets 311 in the extending direction of the battery string 31 . At this time, the first bus bar 321 can be in contact with two adjacent battery sheets 311 of the same battery string 31 , and both sides of the first bus bar 321 in the width direction can overlap the edges of two adjacent battery sheets 311 . It can be understood that, the setting position of the first bus bar 321 can be specifically determined according to actual requirements, so as to better meet the actual application.

在本公开的一些可选实施例中，结合图3，当第一汇流条321位于片间隙内时，第一汇流条321的宽度小于对应的片间隙的宽度，第一汇流条321的宽度与对应的片间隙的宽度之差的绝对值为ΔL，其中，ΔL满足：4mm≤ΔL≤10mm。例如，当ΔL＜4mm时，第一汇流条321的宽度与对应的片间隙的宽度之差的绝对值过小，第一汇流条321可能与相邻的电池片311的边缘搭接，从而可能导致电池片311产生裂片；当ΔL＞10mm时，第一汇流条321的宽度与对应的片间隙的宽度之差的绝对值过大，导致多个电池片311的密度过小，降低光伏组件100单位面积的发电量。由此，通过使ΔL满足：4mm≤ΔL≤10mm，在提高光伏组件100的输出功率的同时，可以进一步降低电池片311裂片的风险，保证光伏组件100的长期可靠性。In some optional embodiments of the present disclosure, with reference to FIG. 3 , when the first bus bar 321 is located in the chip gap, the width of the first bus bar 321 is smaller than the width of the corresponding chip gap, and the width of the first bus bar 321 is the same as that of the chip gap. The absolute value of the difference between the widths of the corresponding sheet gaps is ΔL, where ΔL satisfies: 4 mm≦ΔL≦10 mm. For example, when ΔL<4 mm, the absolute value of the difference between the width of the first bus bar 321 and the width of the corresponding chip gap is too small, and the first bus bar 321 may overlap the edges of the adjacent battery chips 311 , thereby possibly This causes the cell 311 to produce splits; when ΔL>10 mm, the absolute value of the difference between the width of the first bus bar 321 and the width of the corresponding sheet gap is too large, resulting in the density of the plurality of cells 311 being too small, reducing the photovoltaic module 100 power generation per unit area. Therefore, by making ΔL satisfy: 4mm≤ΔL≤10mm, while improving the output power of the photovoltaic module 100 , the risk of splitting of the cell 311 can be further reduced, and the long-term reliability of the photovoltaic module 100 can be ensured.

在本公开的一些实施例中，参照图2和图3，当第一汇流条321位于片间隙内时，每个电池串31的相邻两个电池片311之间均具有片间隙，多个片间隙包括第一片间隙312和多个第二片间隙313，每个第二片间隙313的宽度小于第一片间隙312的宽度，第一汇流条321位于第一片间隙312内，光伏组件100中除第一片间隙312之外的片间隙为第二片间隙313。由此，通过上述设置，每个电池串31的相邻两个电池片311之间可以均彼此间隔开，第一汇流条321可以位于最大的片间隙处，可以实现第一汇流条321与每个电池串31的第二互连结构件9的焊接，焊接制程简单，可以降低焊接不良率，同时可以有效避免第一汇流条321与相邻的电池片311接触，可以更好地防止电池片311产生裂片。In some embodiments of the present disclosure, referring to FIG. 2 and FIG. 3 , when the first bus bar 321 is located in the chip gap, there is a chip gap between two adjacent battery chips 311 of each battery string 31 . The chip gap includes a first chip gap 312 and a plurality of second chip gaps 313, the width of each second chip gap 313 is smaller than the width of the first chip gap 312, the first bus bar 321 is located in the first chip gap 312, and the photovoltaic module The sheet gaps in 100 other than the first sheet clearance 312 are the second sheet clearances 313 . Therefore, through the above arrangement, the adjacent two battery sheets 311 of each battery string 31 can be spaced apart from each other, the first bus bar 321 can be located at the largest sheet gap, and the first bus bar 321 can be connected to each The welding process of the second interconnecting structural members 9 of the battery strings 31 is simple, the welding defect rate can be reduced, and the contact between the first bus bar 321 and the adjacent battery slices 311 can be effectively avoided, which can better prevent the battery slices. 311 produces splinter.

可选地，结合图2-图4，沿电池串31延伸方向、第一片间隙312的至少一侧设有至少一个第二片间隙313。由此，通过设置上述的第一片间隙312和第二片间隙313，由于第一片间隙312较大，当电池串31与第一汇流条321连接时第一汇流条321可以位于第一片间隙312处，从而可以避免第一汇流条321与电池片311接触，有效降低电池片311裂片的风险；由于第二片间隙313较小，可以增大多个电池片311的密度，可以有效提高光伏组件100单位面积的光电转换效率，从而可以有效提高光伏组件100的输出功率。Optionally, with reference to FIGS. 2 to 4 , along the extending direction of the battery string 31 , at least one second sheet gap 313 is provided on at least one side of the first sheet gap 312 . Therefore, by setting the above-mentioned first sheet gap 312 and second sheet gap 313, since the first sheet gap 312 is relatively large, the first bus bar 321 can be located in the first sheet when the battery string 31 is connected to the first bus bar 321 gap 312, so that the contact between the first bus bar 321 and the cell 311 can be avoided, and the risk of splitting of the cell 311 can be effectively reduced; because the second gap 313 is small, the density of the plurality of cells 311 can be increased, which can effectively improve the photovoltaic The photoelectric conversion efficiency per unit area of the module 100 can effectively improve the output power of the photovoltaic module 100 .

可选地，结合图2-图4，第一片间隙312的两侧分别设有至少一个第二片间隙313。例如，在图2-图4的示例中，七个电池片311之间具有六个片间隙，六个片间隙包括一个第一片间隙312和五个第二片间隙313。第一片间隙312的其中一侧具有两个第二片间隙313，第一片间隙312的另一侧具有三个第二片间隙313。由此，通过上述设置，第一片间隙312的两侧可以分别设有至少两个电池片311，当电池串31通过第一汇流条321和第二汇流条322并联旁路二极管6时，第一汇流条321两侧的电池片311数量相对较为均匀，从而使每个旁路二极管6保护的电池片311数量相对较为均匀，在有效避免电池片311产生热斑效应的同时，可以保证旁路二极管6的安全性，降低了旁路二极管6的失效风险。Optionally, with reference to FIGS. 2-4 , at least one second sheet gap 313 is respectively provided on both sides of the first sheet gap 312 . For example, in the example of FIG. 2 to FIG. 4 , there are six cell gaps between the seven battery cells 311 , and the six cell gaps include one first cell gap 312 and five second cell gaps 313 . One side of the first sheet gap 312 has two second sheet gaps 313 , and the other side of the first sheet gap 312 has three second sheet gaps 313 . Therefore, through the above arrangement, at least two battery sheets 311 can be respectively provided on both sides of the first sheet gap 312. When the battery string 31 is connected in parallel with the bypass diode 6 through the first bus bar 321 and the second bus bar 322, the The number of cells 311 on both sides of a bus bar 321 is relatively uniform, so that the number of cells 311 protected by each bypass diode 6 is relatively uniform, which can effectively avoid the hot spot effect of the cells 311 while ensuring the bypass. The safety of the diode 6 reduces the risk of failure of the bypass diode 6 .

在本公开的一些可选实施例中，第一片间隙312为S ₁，第二片间隙313为S ₂，其中，S ₁、S ₂满足：3mm＜S ₁≤25mm，-2mm≤S ₂≤3mm。具体地，例如，当S ₁≤3mm时，第一片间隙312过小，当电池串31与第一汇流条321连接时，第一汇流条321可能会与相邻的电池片311接触，从而使电池片311产生裂片的风险；当S ₁＞25mm时，第一片间隙312过大，会降低电池片311的密度，从而降低光伏组件100的输出功率。当-2mm≤S ₂＜0mm时，沿电池串31延伸方向、相邻两个电池片311的端部搭接，此时相邻两个电池片311的端部搭接部分的宽度为|S ₂|(即0mm～2mm)；当0mm＜S ₂≤3mm时，相邻两个电池片311间隔设置，此时相邻两个电池片311之间的最小距离为S ₂(即0mm～3mm)。由此，通过使S ₁满足3mm＜S ₁≤25mm，第一片间隙312较为合理，在降低电池片311产生裂片风险的同时，保证光伏组件100具有较高的输出功率，提高了光伏组件100的长期可靠性。通过使S ₂满足-2mm≤S ₂≤3mm，第二片间隙313较小，从而使相同尺寸的光伏组件100可以容纳更多数量的电池片311，有效提高光伏组件100单位面积的光电转换效率，进一步提高了光伏组件100的输出功率。 In some optional embodiments of the present disclosure, the first sheet gap 312 is S ₁ , and the second sheet gap 313 is S ₂ , wherein S ₁ and S ₂ satisfy: 3mm<S ₁ ≤25mm, -2mm≤S ₂ ≤3mm. Specifically, for example, when S ₁ ≤ 3 mm, the first sheet gap 312 is too small, and when the battery string 31 is connected to the first bus bar 321 , the first bus bar 321 may be in contact with the adjacent battery sheet 311 , thereby There is a risk of splitting the cells 311 ; when S ₁ >25 mm, the first gap 312 is too large, which will reduce the density of the cells 311 , thereby reducing the output power of the photovoltaic module 100 . When -2mm≤S ₂ <0mm, along the extending direction of the battery string 31, the ends of the two adjacent battery sheets 311 overlap, and the width of the overlapping portion of the ends of the two adjacent battery sheets 311 is |S ₂ | (ie 0mm～2mm); when 0mm<S ₂ ≤ 3mm, two adjacent battery pieces 311 are arranged at intervals, and the minimum distance between two adjacent battery pieces 311 is S ₂ (ie 0mm～3mm) ). Therefore, by making S ₁ satisfy 3mm<S ₁ ≤25mm, the first sheet gap 312 is more reasonable, and while reducing the risk of splitting of the cells 311 , the photovoltaic module 100 has a higher output power, and the photovoltaic module 100 is improved. long-term reliability. By making S ₂ satisfy -2mm≤S ₂ ≤3mm, the second sheet gap 313 is smaller, so that the photovoltaic module 100 of the same size can accommodate a larger number of cells 311, effectively improving the photoelectric conversion efficiency per unit area of the photovoltaic module 100 , further improving the output power of the photovoltaic module 100 .

在本公开的一些可选实施例中，结合图2-图4，第一片间隙312内包含的电池片311的数量为N ₁，第一片间隙312内的多个电池片311中的每相邻两个之间的片间隙为第二片间隙313，其中，N ₁满足：N ₁≥20。 In some optional embodiments of the present disclosure, with reference to FIGS. 2 to 4 , the number of battery slices 311 contained in the first slice gap 312 is N ₁ , and each of the plurality of battery slices 311 in the first slice gap 312 The sheet gap between two adjacent sheets is the second sheet clearance 313 , where N ₁ satisfies: N ₁ ≥20.

需要说明的是，当第一片间隙312为一个时，“第一片间隙312内包含的电池片311的数量”指的是第一片间隙312的任意一侧的电池片311的数量；当第一片间隙312为多个时，“第一片间隙312内包含的电池片311的数量”指的是相邻两个第一片间隙312之间的电池片311的数量，以及沿电池串31延伸方向、最外侧的第一片间隙312的远离其它第一片间隙312的一侧的电池片311的数量。It should be noted that, when the first gap 312 is one, "the number of battery chips 311 contained in the first gap 312" refers to the number of battery chips 311 on either side of the first gap 312; when When there are multiple first gaps 312, “the number of battery chips 311 contained in the first gap 312” refers to the number of battery chips 311 between two adjacent first gaps 312, and the number of battery chips 311 along the battery string. The number of battery sheets 311 on the side of the outermost first sheet gap 312 away from other first sheet gaps 312 in the extension direction of 31 .

由此，通过使N ₁满足：N ₁≥20，第一片间隙312内包含的电池片311的数量较为合理，当电池串31通过第一汇流条321和第二汇流条322并联旁路二极管6时，汇流条可以位于第一片间隙312处，从而使每个旁路二极管6保护的电池片311的数量可以为个以上，使旁路二极管6可以最大化地发挥其作用，在避免电池片311产生热斑效应的同时，可以有效降低光伏组件100的成本。 Therefore, by making N ₁ satisfy: N ₁ ≥ 20, the number of battery slices 311 contained in the first slice gap 312 is relatively reasonable. 6, the bus bar can be located at the first chip gap 312, so that the number of battery chips 311 protected by each bypass diode 6 can be more than one, so that the bypass diode 6 can maximize its role and avoid battery life. While the sheet 311 produces the hot spot effect, the cost of the photovoltaic module 100 can be effectively reduced.

可选地，第二汇流条322可以位于相邻两个电池串31之间的间隙处。如此设置，可以避免第二汇流条322与相邻的电池串31的电池片311接触，从而可以有效降低电池片311裂片的风险，提高光伏组件100的可靠性。Optionally, the second bus bar 322 may be located at a gap between two adjacent battery strings 31 . In this way, the second bus bar 322 can be prevented from contacting with the cells 311 of the adjacent cell strings 31 , thereby effectively reducing the risk of splitting of the cells 311 and improving the reliability of the photovoltaic module 100 .

或者可选的，参照图5，第二汇流条322的至少部分位于电池串31的背面。也就是说，可以是整个第二汇流条322完全位于电池串31的电池片311的背面，或者第二汇流条322的其中一部分位于电池串31的电池片311的背面、另一部分位于相邻两个电池串31之间的间隙处或光伏组件100的边缘处。这样，第二汇流条322可以隐藏在光伏组件100的背面，从而可以减小光伏组件100的长度方向和宽度方向上的尺寸，使多个电池串31的排布可以更加紧凑，减小光伏组件100的占用空间。Alternatively, referring to FIG. 5 , at least part of the second bus bar 322 is located at the back of the battery string 31 . That is to say, the entire second bus bar 322 may be completely located on the backside of the battery slices 311 of the battery string 31 , or a part of the second busbar 322 may be located on the backside of the battery slices 311 of the battery string 31 , and the other part is located on the backside of the battery slices 311 of the battery string 31 . At the gap between the individual cell strings 31 or at the edge of the photovoltaic module 100 . In this way, the second bus bar 322 can be hidden on the back of the photovoltaic module 100 , so that the dimensions in the length direction and the width direction of the photovoltaic module 100 can be reduced, the arrangement of the plurality of battery strings 31 can be more compact, and the photovoltaic module can be reduced in size. 100 footprint.

当然，本公开不限于此，第二汇流条322还可以位于所有的电池串31的一侧。可以理解的是，第二汇流条322的设置位置可以根据实际需求具体确定，以更好地满足实际应用。Of course, the present disclosure is not limited thereto, and the second bus bars 322 may also be located on one side of all the battery strings 31 . It can be understood that the setting position of the second bus bar 322 can be specifically determined according to actual requirements, so as to better meet the actual application.

在本公开的一些可选实施例中，第一汇流条321的宽度为W ₁，第一汇流条321的厚度为T ₁，第二汇流条322的宽度为W ₂，第二汇流条322的厚度为T ₂，其中，W ₁、W ₂、T ₁、T ₂分别满足：3mm≤W ₁≤10mm，3mm≤W ₂≤10mm，0.15mm≤T ₁≤0.6mm，0.15mm≤T ₂≤0.6mm。其中，W ₁和W ₂可以相等，也可以不等；T ₁和T ₂可以相等，也可以不等。 In some optional embodiments of the present disclosure, the width of the first bus bar 321 is W ₁ , the thickness of the first bus bar 321 is T ₁ , the width of the second bus bar 322 is W ₂ , and the width of the second bus bar 322 is W 2 . The thickness is T ₂ , wherein W ₁ , W ₂ , T ₁ , and T ₂ satisfy respectively: 3mm≤W ₁ ≤10mm, 3mm≤W ₂ ≤10mm, 0.15mm≤T ₁ ≤0.6mm, 0.15mm≤T ₂ ≤ 0.6mm. Among them, W ₁ and W ₂ may be equal or unequal; T ₁ and T ₂ may be equal or unequal.

具体地，例如，当W ₁＜3mm时，第一汇流条321的宽度过小，从而使第一汇流条321的电阻较大，可能导致第一汇流条321的导电能力较弱，且由于第一汇流条321位于电池片311的背面，可能会导致第一汇流条321与电池片311的接触面积过小，增加电池片311裂片的风险；当W ₁＞10mm时，第一汇流条321的宽度过大，从而导致第一汇流条321的成本较高。当W ₂＜3mm时，第二汇流条322的宽度过小，导电能力较弱；当W ₂＞10mm时，第二汇流条322的宽度过大，成本过高。当T ₁、T ₂＜0.15mm时，第一汇流条321、第二汇流条322的厚度过小，从而使第一汇流条321、第二汇流条322的电阻较大，可能导致第一汇流条321、第二汇流条322的导电能力较弱；当T ₁、T ₂＞0.6mm时，第一汇流条321、第二汇流条322的厚度过大，增加了电池片311裂片的风险，且导致光伏组件100的成本较高。 Specifically, for example, when W ₁ <3 mm, the width of the first bus bar 321 is too small, so that the resistance of the first bus bar 321 is relatively large, which may lead to a weaker electrical conductivity of the first bus bar 321, and due to the A bus bar 321 is located on the back side of the battery sheet 311, which may cause the contact area between the first bus bar 321 and the battery sheet 311 to be too small, increasing the risk of splitting the battery sheet 311; when W ₁ >10 mm, the first bus bar 321 is If the width is too large, the cost of the first bus bar 321 is high. When W ₂ <3 mm, the width of the second bus bar 322 is too small, and the electrical conductivity is weak; when W ₂ >10 mm, the width of the second bus bar 322 is too large, and the cost is too high. When T ₁ , T ₂ <0.15 mm, the thicknesses of the first bus bar 321 and the second bus bar 322 are too small, so that the resistances of the first bus bar 321 and the second bus bar 322 are relatively large, which may cause the first bus bar 321 and the second bus bar 322 to have a higher resistance. The electrical conductivity of the bar 321 and the second bus bar 322 is weak; when T ₁ , T ₂ >0.6 mm, the thickness of the first bus bar 321 and the second bus bar 322 is too large, which increases the risk of splitting of the cell 311 . In addition, the cost of the photovoltaic module 100 is relatively high.

由此，通过使W ₁、W ₂、T ₁、T ₂分别满足：3mm≤W ₁≤10mm，3mm≤W ₂≤10mm，0.15mm≤T ₁≤0.6mm，0.15mm≤T ₂≤0.6mm，第一汇流条321和第二汇流条322的宽度较为合理，一方面，第一汇流条321和第二汇流条322的电阻较小，具有较强的导电能力，且成本较低；另一方面，可以有效降低电池片311裂片的风险，保证光伏组件100的可靠性。而且，第一汇流条321和第二汇流条322的厚度合理，使第一汇流条321和第二汇流条322的电阻较小，具有较强的导电能力，且可以有效降低电池片311裂片的风险。进一步可选地，W ₁、W ₂可以分别满足：3mm≤W ₁≤8mm，3mm≤W ₂≤8mm，例如W ₁和W ₂可以为7mm。但不限于此。 Therefore, by making W ₁ , W ₂ , T ₁ , and T ₂ respectively satisfy: 3mm≤W ₁ ≤10mm, 3mm≤W ₂ ≤10mm, 0.15mm≤T ₁ ≤0.6mm, 0.15mm≤T ₂ ≤0.6mm , the widths of the first bus bar 321 and the second bus bar 322 are relatively reasonable. On the one hand, the resistance of the first bus bar 321 and the second bus bar 322 is relatively small, with strong electrical conductivity and low cost; On the one hand, the risk of splitting of the cell 311 can be effectively reduced, and the reliability of the photovoltaic module 100 can be ensured. Moreover, the thicknesses of the first bus bar 321 and the second bus bar 322 are reasonable, so that the resistance of the first bus bar 321 and the second bus bar 322 is relatively small, and the electrical resistance of the first bus bar 321 and the second bus bar 322 is relatively small, and has strong electrical conductivity, and can effectively reduce the slivers of the cell 311. risk. Further optionally, W ₁ and W ₂ may respectively satisfy: 3mm≦W ₁ ≦8mm, and 3mm≦W ₂ ≦8mm, for example, W ₁ and W ₂ may be 7mm. But not limited to this.

在本公开的一些实施例中，第一汇流条321的宽度可以小于第二汇流条322的宽度。如此设置，当第二汇流条322位于电池串31的背面时，第二汇流条322与电池片311的接触面积较大，从而可以降低电池片311的裂片的风险。In some embodiments of the present disclosure, the width of the first bus bar 321 may be smaller than the width of the second bus bar 322 . In this way, when the second bus bar 322 is located on the back of the battery string 31 , the contact area between the second bus bar 322 and the battery sheet 311 is larger, thereby reducing the risk of splitting of the battery sheet 311 .

在本公开的一些实施例中，第二汇流条322和第一汇流条321可以为一体结构。例如，第二汇流条322和第一汇流条321可以在光伏组件100制作前焊接为一体结构。如此设置，第二汇流条322和第一汇流条321的结构简单，在光伏组件100的制作过程中，可以省去第二汇流条322和第一汇流条321的焊接过程，从而可以简化组件的工艺流程，有效提高光伏组件100的加工效率，且如此设置的第二汇流条322和第一汇流条321的整体性较高，可以避免第二汇流条322和第一汇流条321的连接处断裂，从而可以提高第二汇流条322和第一汇流条321的结构强度和结构稳定性。In some embodiments of the present disclosure, the second bus bar 322 and the first bus bar 321 may be an integral structure. For example, the second bus bar 322 and the first bus bar 321 may be welded into an integrated structure before the photovoltaic module 100 is fabricated. In this way, the structures of the second bus bar 322 and the first bus bar 321 are simple, and the welding process of the second bus bar 322 and the first bus bar 321 can be omitted during the manufacturing process of the photovoltaic module 100 , thereby simplifying the assembly process. The process flow can effectively improve the processing efficiency of the photovoltaic module 100, and the integrity of the second bus bar 322 and the first bus bar 321 arranged in this way is relatively high, which can prevent the connection between the second bus bar 322 and the first bus bar 321 from breaking. , so that the structural strength and structural stability of the second bus bar 322 and the first bus bar 321 can be improved.

在本公开的一些实施例中，多个电池串31的两端分别为正极引出端和负极引出端，光伏组件100包括多个旁路二极管6，多个旁路二极管6均通过第二汇流条322反向并联在正极引出端和负极引出端之间，至少一个旁路二极管6位于第二汇流条322与第一汇流条321的连接处与正极引出端之间，至少一个旁路二极管6位于第二汇流条322与第一汇流条321的连接处与负极引出端之间。由此，通过设置上述的旁路二极管6，可以在位于第一汇流条321两侧的多个电池片311受到阴影遮挡时实现旁路功能，避免产生热斑效应。In some embodiments of the present disclosure, the two ends of the plurality of battery strings 31 are the positive terminal and the negative terminal respectively, the photovoltaic module 100 includes a plurality of bypass diodes 6, and the plurality of bypass diodes 6 all pass through the second bus bar 322 is connected in anti-parallel between the positive terminal and the negative terminal, at least one bypass diode 6 is located between the connection between the second bus bar 322 and the first bus bar 321 and the positive terminal, and at least one bypass diode 6 is located. Between the connection between the second bus bar 322 and the first bus bar 321 and the negative terminal. Therefore, by arranging the above-mentioned bypass diode 6, the bypass function can be realized when the plurality of cells 311 located on both sides of the first bus bar 321 are shaded, thereby avoiding the hot spot effect.

在本公开的一些实施例中，参照图5和图6，多个旁路二极管6分别位于第二汇流条322的两端。例如，在图5和图6的示例中，当位于第一汇流条321上侧的电池片311受到阴影遮挡时，由于第二汇流条322与第一汇流条321相连，连接在第二汇流条322的上端与多个电池串31的对应端部之间的旁路二极管6可以实现旁路功能，此时位于第一汇流条321下侧的电池片311仍可以正常工作，使光伏组件100可以向外输出电能；当位于第一汇流条321下侧的电池片311受到阴影遮挡时，连接在第二汇流条322下端与多个电池串31的对应端部之间的旁路二极管6可以实现旁路功能，此时位于第一汇流条321上侧的电池片311仍可以正常工作，保证光伏组件100的发电效率。由此，如此设置的多个旁路二极管6在有效避免光伏组件100产生热斑效应的同时，设置位置更加合理，方便接线。In some embodiments of the present disclosure, referring to FIGS. 5 and 6 , a plurality of bypass diodes 6 are located at both ends of the second bus bar 322 , respectively. For example, in the examples of FIG. 5 and FIG. 6 , when the battery sheet 311 located on the upper side of the first bus bar 321 is shaded, since the second bus bar 322 is connected to the first bus bar 321 , it is connected to the second bus bar 321 . The bypass diodes 6 between the upper end of 322 and the corresponding ends of the plurality of battery strings 31 can realize the bypass function. At this time, the battery slices 311 located on the lower side of the first bus bar 321 can still work normally, so that the photovoltaic module 100 can Output electric energy to the outside; when the battery slices 311 located on the lower side of the first bus bar 321 are shaded, the bypass diode 6 connected between the lower end of the second bus bar 322 and the corresponding ends of the plurality of battery strings 31 can realize Bypass function, at this time, the cells 311 located on the upper side of the first bus bar 321 can still work normally to ensure the power generation efficiency of the photovoltaic module 100 . Therefore, the plurality of bypass diodes 6 thus arranged can effectively avoid the hot spot effect of the photovoltaic module 100, and at the same time, the arrangement position is more reasonable, and the wiring is convenient.

在本公开的一些实施例中，第二汇流条322与第一汇流条321的连接处与正极引出端之间设有并联连接的至少两个旁路二极管6；和/或第二汇流条322与第一汇流条321的连接处与负极引出端之间设有并联连接的至少两个旁路二极管6。由此，当第二汇流条322与第一汇流条321的连接处与对应的引出端(即正极引出端或负极引出端)之间的旁路二极管6为多个时，可以应用于尺寸较大的电池片311，例如电池片311的长度可以为210mm，多个旁路二极管6可以起到较好的分流作用，从而可以降低对旁路二极管6的电流要求，避免旁路二极管6的温度急剧上升，极大地降低了旁路二极管6的失效风险，且可以降低旁路二极管6的成本。另外，当多个旁路二极管6中的其中部分发生失效时，剩余的旁路二极管6仍可以起到较好的保护作用，从而可以有效提高光伏组件100的可靠性。In some embodiments of the present disclosure, at least two bypass diodes 6 connected in parallel are provided between the connection between the second bus bar 322 and the first bus bar 321 and the positive terminal; and/or the second bus bar 322 At least two bypass diodes 6 connected in parallel are provided between the connection with the first bus bar 321 and the negative terminal. Therefore, when there are multiple bypass diodes 6 between the connection between the second bus bar 322 and the first bus bar 321 and the corresponding lead end (ie, the positive lead end or the negative lead end), it can be applied to a smaller size For a large cell 311, for example, the length of the cell 311 can be 210mm, and the multiple bypass diodes 6 can play a better shunting effect, thereby reducing the current requirement for the bypass diode 6 and avoiding the temperature of the bypass diode 6. The sharp rise greatly reduces the failure risk of the bypass diode 6 and can reduce the cost of the bypass diode 6 . In addition, when some of the multiple bypass diodes 6 fail, the remaining bypass diodes 6 can still play a better protective role, thereby effectively improving the reliability of the photovoltaic module 100 .

在本公开的一些实施例中，结合图3和图4，光伏组件100还包括多个第二互连结构件9和多个端部汇流条8。其中，多个第二互连结构件9与多个电池串31的沿电池串31延伸方向的两端的电池片311电连接，且每个第二互连结构件9的远离电池串31中心的一端延伸至超出对应的电池片311的远离电池串31中心的一侧边缘。多个端部汇流条8分别位于多个电池串31的沿电池串31延伸方向的两端，每个端部汇流条8沿串排布方向延伸，每个端部汇流条8与多个电池串31的多个第二互连结构件9均相连以使多个电池串31并联连接，每个端部汇流条8上设有引出线81，旁路二极管6连接在第二汇流条322的端部与对应的引出线81之间。In some embodiments of the present disclosure, in conjunction with FIGS. 3 and 4 , the photovoltaic assembly 100 further includes a plurality of second interconnecting structures 9 and a plurality of end bus bars 8 . Wherein, the plurality of second interconnecting structural members 9 are electrically connected to the battery sheets 311 at both ends of the plurality of battery strings 31 along the extending direction of the battery strings 31 , and each second interconnecting structural member 9 is far from the center of the battery string 31 . One end extends beyond the side edge of the corresponding battery sheet 311 away from the center of the battery string 31 . The plurality of end bus bars 8 are respectively located at both ends of the plurality of battery strings 31 along the extending direction of the battery strings 31 , each end bus bar 8 extends along the string arrangement direction, and each end bus bar 8 is connected to the plurality of batteries. The plurality of second interconnecting structural members 9 of the string 31 are all connected to connect the plurality of battery strings 31 in parallel, each end bus bar 8 is provided with a lead wire 81, and the bypass diode 6 is connected to the second bus bar 322. between the end and the corresponding lead wire 81 .

例如，在图5的示例中示出了两个端部汇流条8，引出线81可以包括正极引出线和负极引出线。两个端部汇流条8的其中一个上设有正极引出线，第二汇流条322的一端与正极引出线之间设有旁路二极管6。两个端部汇流条8的另一个上设有负极引出线，第二汇流条322的另一端与负极引出线之间设有旁路二极管6。由此，通过设置上述的多个第二互连结构件9和端部汇流条8，多个第二互连结构件9可以将多个电池串31的多个电池片311通过光生伏特效应产生的电流传递至端部汇流条8，端部汇流条8可以将多个第二互连结构件9传递的电流汇集起来。通过设置上述的引出线81，引出线81可以有效引出多个电池片311产生的电流，且可以实现旁路二极管6的连接，从而可以对整个光伏组件100起到有效的保护作用。For example, in the example of FIG. 5 showing two end bus bars 8, the lead wires 81 may include positive lead wires and negative lead wires. A positive lead wire is provided on one of the two end bus bars 8 , and a bypass diode 6 is provided between one end of the second bus bar 322 and the positive lead lead. A negative lead wire is provided on the other of the two end bus bars 8 , and a bypass diode 6 is provided between the other end of the second bus bar 322 and the negative lead wire. Therefore, by arranging the above-mentioned plurality of second interconnecting structural members 9 and end bus bars 8, the plurality of second interconnecting structural members 9 can generate the plurality of battery sheets 311 of the plurality of battery strings 31 through the photovoltaic effect. The current passed by the terminal bus bar 8 can collect the current passed by the plurality of second interconnecting structure members 9 together. By arranging the above-mentioned lead wires 81, the lead wires 81 can effectively lead out the current generated by the plurality of cells 311, and can realize the connection of the bypass diode 6, so that the entire photovoltaic module 100 can be effectively protected.

需要说明的是，上述第一互连结构件7、第二互连结构件9可以是光伏领域常用的金属导电线，材质可以是铜线，或者镀锡的铜线，或者是表面镀有低温合金的导电线，例如镀有镍和铅等金属的低温焊带或汇流条。It should be noted that the above-mentioned first interconnecting structural member 7 and second interconnecting structural member 9 can be metal conductive wires commonly used in the photovoltaic field, and the material can be copper wire, or tin-plated copper wire, or a surface plated with low temperature Conductive wires of alloys, such as low temperature ribbons or bus bars plated with metals such as nickel and lead.

在本公开的一些可选实施例中，如图5所示，引出线81可以沿电池串31延伸方向延伸。例如，在图5的示例中，两个引出线81均与第二汇流条322平行。两个引出线81中的其中一个与第二汇流条322在电池串31延伸方向上彼此相对，两个引出线81中的另一个与第二汇流条322在串排布方向上错开布置。由此，由于引出线81和第二汇流条322均需要穿过背面盖板2与对应的旁路二极管6相连，通过使引出线81沿电池串31延伸方向延伸，引出线81的延伸方向与第二汇流条322的延伸方向可以一致，从而使引出线81与第二汇流条322可以从背面盖板2上的同一位置穿出，且可以有效减小背面盖板2的开孔面积。In some optional embodiments of the present disclosure, as shown in FIG. 5 , the lead wires 81 may extend along the extending direction of the battery strings 31 . For example, in the example of FIG. 5 , both lead wires 81 are parallel to the second bus bar 322 . One of the two lead wires 81 and the second bus bar 322 are opposite to each other in the extending direction of the battery string 31 , and the other of the two lead wires 81 and the second bus bar 322 are arranged staggered in the string arrangement direction. Therefore, since both the lead wires 81 and the second bus bars 322 need to pass through the back cover plate 2 to be connected to the corresponding bypass diodes 6 , by extending the lead wires 81 along the extension direction of the battery string 31 , the extension direction of the lead wires 81 is the same as that of the battery string 31 . The extending directions of the second bus bars 322 can be consistent, so that the lead wires 81 and the second bus bars 322 can pass through the same position on the back cover 2 , and the opening area of the back cover 2 can be effectively reduced.

需要说明的是，在上述实施例中，以两个引出线81中的其中一个与第二汇流条322在电池串31延伸方向上彼此相对、另一个与第二汇流条322在串排布方向上错开布置为例进行说明。可以理解的是，还可以是两个引出线81均与第二汇流条322在电池串31延伸方向上彼此相对，或两个引出线81均与第二汇流条322在串排布方向上错开布置。本公开对此不作限定。It should be noted that, in the above embodiment, one of the two lead wires 81 and the second bus bar 322 are opposite to each other in the extending direction of the battery string 31 , and the other is opposite to the second bus bar 322 in the string arrangement direction The above staggered arrangement is used as an example to illustrate. It can be understood that both the two lead wires 81 and the second bus bar 322 are opposite to each other in the extending direction of the battery string 31 , or both the two lead wires 81 and the second bus bar 322 are staggered in the string arrangement direction. layout. The present disclosure does not limit this.

当然，本公开不限于此，在本公开的另一些实施例中，引出线81可以沿串排布方向延伸(图未示出)。可以理解的是，引出线81的具体延伸方向可以根据实际需求具体设置，以更好地满足实际应用。Of course, the present disclosure is not limited thereto, and in other embodiments of the present disclosure, the lead wires 81 may extend along the string arrangement direction (not shown in the figure). It can be understood that the specific extension direction of the lead wire 81 can be specifically set according to actual requirements, so as to better meet the actual application.

在本公开的一些实施例中，光伏组件100进一步包括正面盖板1和背面盖板2，背面盖板2设在正面盖板1的厚度方向上的一侧，多个电池串31位于正面盖板1和背面盖板2之间。In some embodiments of the present disclosure, the photovoltaic assembly 100 further includes a front cover plate 1 and a back cover plate 2, the back cover plate 2 is provided on one side of the front cover plate 1 in the thickness direction, and the plurality of battery strings 31 are located on the front cover between plate 1 and back cover plate 2.

例如，结合图1，多个电池串31构成电池层3，正面盖板1可以设在电池层3的正面，背面盖板2可以设在电池层3的背面，电池层3与正面盖板1之间设有正面封装胶膜4，电池层3与背面盖板2之间设有背面封装胶膜5。正面盖板1、背面盖板2和多个电池串31的边缘可以设有边框，正面盖板1可以为玻璃。其中，上述正面指的是电池片311的主要受光面，即，电池片311或光伏组件100直接接收太阳光的面，背面是与正面相对的面。For example, referring to FIG. 1 , a plurality of battery strings 31 constitute the battery layer 3 , the front cover 1 can be arranged on the front of the battery layer 3 , the back cover 2 can be arranged on the back of the battery layer 3 , the battery layer 3 and the front cover 1 A front packaging adhesive film 4 is provided therebetween, and a back packaging adhesive film 5 is provided between the battery layer 3 and the back cover plate 2 . Edges of the front cover 1 , the back cover 2 and the plurality of battery strings 31 may be provided with borders, and the front cover 1 may be glass. The front side refers to the main light-receiving surface of the cell 311 , that is, the side of the cell 311 or the photovoltaic module 100 that directly receives sunlight, and the back side is the side opposite to the front side.

制作光伏组件100时，可以首先将正面盖板1、正面封装胶膜4、电池层3、背面封装胶膜5和背面盖板2依次摆放好，以完成光伏组件100层压前的准备工作。然后将叠层好的包括正面盖板1、正面封装胶膜4、电池层3、背面封装胶膜5和背面盖板2的五层结构经过抽真空加热层压后，使正面封装胶膜4和背面封装胶膜5交联固化，以将电池层3保护起来，最终实现五层结构(即正面盖板1、正面封装胶膜4、电池层3、背面封装胶膜5和背面盖板2)的牢靠粘接，并通过加装铝合金边框(图未示出)、接线盒以及采用硅胶密封后完成光伏组件100制作。When manufacturing the photovoltaic module 100 , the front cover 1 , the front encapsulation film 4 , the battery layer 3 , the back encapsulation film 5 and the back cover 2 can be placed in sequence in order to complete the preparation work before the photovoltaic module 100 is laminated . Then, the laminated five-layer structure including the front cover 1, the front encapsulation film 4, the battery layer 3, the back encapsulation film 5 and the back cover 2 is vacuum-heated and laminated to make the front encapsulation film 4 It is cross-linked and cured with the back encapsulation film 5 to protect the battery layer 3, and finally realizes a five-layer structure (ie, the front cover 1, the front encapsulation film 4, the battery layer 3, the back encapsulation film 5 and the back cover 2). ) firmly bonded, and the photovoltaic module 100 is fabricated by adding an aluminum alloy frame (not shown in the figure), a junction box and sealing with silicone.

在本公开的一些可选实施例中，至少一个旁路二极管6可以位于正面盖板1和背面盖板2之间。例如，上述至少一个旁路二极管6可以层压在光伏组件100内。如此设置，一方面，可以降低外部环境例如水汽对上述至少一个旁路二极管6的影响，使上述至少一个旁路二极管6可以具有较好的性能，可以有效对对应的电池片311进行热斑保护，避免电池片311产生热斑效应；另一方面，上述至少一个旁路二极管6可以无需位于接线盒内，从而使光伏组件100与上述至少一个旁路二极管6对应位置处可以无需打孔，从而可以避免光伏组件100受潮，提升光伏组件100的防水性能，避免光伏组件100在长期运行过程中功率受到影响，有效提高光伏组件100的长期可靠性。In some alternative embodiments of the present disclosure, at least one bypass diode 6 may be located between the front cover 1 and the back cover 2 . For example, the at least one bypass diode 6 described above may be laminated within the photovoltaic module 100 . In this way, on the one hand, the influence of the external environment such as water vapor on the at least one bypass diode 6 can be reduced, so that the at least one bypass diode 6 can have better performance, and can effectively protect the corresponding cell 311 from hot spots on the other hand, the at least one bypass diode 6 does not need to be located in the junction box, so that the photovoltaic module 100 and the at least one bypass diode 6 do not need to be punched at the position corresponding to the above-mentioned at least one bypass diode. The photovoltaic module 100 can be prevented from being damp, the waterproof performance of the photovoltaic module 100 can be improved, the power of the photovoltaic module 100 can be prevented from being affected during long-term operation, and the long-term reliability of the photovoltaic module 100 can be effectively improved.

当然，本公开不限于此，在本公开的另一些可选实施例中，背面盖板2上设有沿背面盖板2的厚度方向贯通的两个过线孔。光伏组件100进一步包括至少一个接线盒，接线盒设在背面盖板2的远离正面盖板1的一侧。例如，结合图5和图6，光伏组件100可以包括两个接线盒和两个旁路二极管6，两个旁路二极管6分别位于两个接线盒内，两个接线盒分别位于电池串31延伸方向的两端。如此设置，当旁路二极管6损坏时，可以通过拆卸接线盒将损坏的旁路二极管6取出，然后将功能完好的旁路二极管6重新放入接线盒内，方便旁路二极管6的维修和更换。Of course, the present disclosure is not limited thereto. In some other optional embodiments of the present disclosure, the back cover plate 2 is provided with two wire-passing holes penetrating along the thickness direction of the back cover plate 2 . The photovoltaic module 100 further includes at least one junction box, and the junction box is provided on the side of the back cover 2 away from the front cover 1 . For example, with reference to FIGS. 5 and 6 , the photovoltaic module 100 may include two junction boxes and two bypass diodes 6 , the two bypass diodes 6 are respectively located in the two junction boxes, and the two junction boxes are respectively located in the battery string 31 extending both ends of the direction. In this way, when the bypass diode 6 is damaged, the damaged bypass diode 6 can be taken out by disassembling the junction box, and then the bypass diode 6 with good function is put back into the junction box, so as to facilitate the maintenance and replacement of the bypass diode 6 .

至少一个旁路二极管6设在接线盒内，第二汇流条322的端部和引出线81分别穿过同一过线孔与旁路二极管6相连。由此，通过使第二汇流条322的端部和对应的引出线81穿过同一过线孔，可以减少背面盖板2上的开孔数量，加工更加方便，且可以保证背面盖板2的结构强度。而且，通过设置上的两个接线盒，两个接线盒可以分别用于放置两个旁路二极管6，分体式的接线盒可以有效减少线缆的数量，降低结温。At least one bypass diode 6 is arranged in the junction box, and the end of the second bus bar 322 and the lead wire 81 are respectively connected to the bypass diode 6 through the same wire hole. Therefore, by passing the end of the second bus bar 322 and the corresponding lead wire 81 through the same wire hole, the number of openings on the back cover 2 can be reduced, the processing is more convenient, and the Structural strength. Moreover, by providing two junction boxes, the two junction boxes can be used to place two bypass diodes 6 respectively, and the split-type junction box can effectively reduce the number of cables and reduce the junction temperature.

在本公开的一些实施例中，参照图6，第二汇流条322的两端与多个电池串31的对应端部之间分别连接有旁路二极管6。例如，在图5和图6的示例中，当位于第一汇流条321上侧的电池片311受到阴影遮挡时，由于第二汇流条322与第一汇流条321相连，连接在第二汇流条322的上端与多个电池串31的对应端部之间的旁路二极管6可以实现旁路功能，此时位于第一汇流条321下侧的电池片311仍可以正常工作，使光伏组件100可以向外输出电能；当位于第一汇流条321下侧的电池片311受到阴影遮挡时，连接在第二汇流条322下端与多个电池串31的对应端部之间的旁路二极管6可以实现旁路功能，此时位于第一汇流条321上侧的电池片311仍可以正常工作，保证光伏组件100的发电效率。由此，通过设置上述的旁路二极管6，可以在多个电池串31的电池片311受到阴影遮挡时实现旁路功能，避免产生热斑效应。In some embodiments of the present disclosure, referring to FIG. 6 , bypass diodes 6 are respectively connected between two ends of the second bus bar 322 and corresponding ends of the plurality of battery strings 31 . For example, in the examples of FIG. 5 and FIG. 6 , when the battery sheet 311 located on the upper side of the first bus bar 321 is shaded, since the second bus bar 322 is connected to the first bus bar 321 , it is connected to the second bus bar 321 . The bypass diodes 6 between the upper end of 322 and the corresponding ends of the plurality of battery strings 31 can realize the bypass function. At this time, the battery slices 311 located on the lower side of the first bus bar 321 can still work normally, so that the photovoltaic module 100 can Output electrical energy to the outside; when the battery sheet 311 located on the lower side of the first bus bar 321 is shaded, the bypass diode 6 connected between the lower end of the second bus bar 322 and the corresponding ends of the plurality of battery strings 31 can realize Bypass function, at this time, the cells 311 located on the upper side of the first bus bar 321 can still work normally to ensure the power generation efficiency of the photovoltaic module 100 . Therefore, by arranging the above-mentioned bypass diodes 6 , the bypass function can be realized when the cells 311 of the plurality of cell strings 31 are shaded by shadows, and the hot spot effect can be avoided.

在本公开的一些可选实施例中，如图2-图5所示，每个电池片311可以为完整电池片的X分之一，其中，X为大于等于3的正整数，串排布方向为电池片311的长度延伸方向，电池串31延伸方向为电池片311的宽度延伸方向。例如，可以采用激光划片的方式实现电池片311的加工。In some optional embodiments of the present disclosure, as shown in FIG. 2 to FIG. 5 , each cell 311 may be 1/X of a complete cell, where X is a positive integer greater than or equal to 3, and the cells are arranged in series. The direction is the lengthwise extending direction of the battery sheet 311 , and the extending direction of the battery string 31 is the widthwise extending direction of the battery sheet 311 . For example, the battery sheet 311 can be processed by means of laser scribing.

由此，通过使X为大于等于3的正整数，在单个电池串31中的完整电池片的数量不变的前提下，串联的电池片311的数量会相应增加，可以减小光伏组件100的内部损耗，在保证光伏组件100具有较高的输出功率的同时，有助于降低单瓦成本。而且，电池片311的宽度可以较小，多个电池片311可以规整且相对紧密地排列，可以进一步减小光伏组件100的尺寸，有利于整个光伏组件100占用空间的减小，方便光伏组件100的安装和运输，且可以使整个光伏组件100的重量可以较小，使光伏组件100可以安装在屋顶上。另外，与采用完整电池片相比，可以将有外观缺陷的完整电池片切割后再利用，从而可以有效降低成本。此外，由于电池串31延伸方向为电池片311的宽度延伸方向，电池串31可以容纳数量较多的电池片311，从而可以进一步提高光伏组件100的输出功率。Therefore, by setting X to be a positive integer greater than or equal to 3, on the premise that the number of complete cells in a single cell string 31 remains unchanged, the number of cells 311 connected in series will increase accordingly, which can reduce the cost of the photovoltaic module 100 . The internal loss helps to reduce the cost per watt while ensuring that the photovoltaic module 100 has a higher output power. Moreover, the width of the cell 311 can be small, and the plurality of cells 311 can be arranged in a regular and relatively close manner, which can further reduce the size of the photovoltaic module 100 , which is beneficial to the reduction of the space occupied by the entire photovoltaic module 100 and facilitates the photovoltaic module 100 . installation and transportation, and the weight of the entire photovoltaic assembly 100 can be reduced, so that the photovoltaic assembly 100 can be installed on the roof. In addition, compared with the use of complete cell sheets, the complete cell sheets with appearance defects can be cut and reused, thereby effectively reducing costs. In addition, since the extending direction of the battery strings 31 is the extending direction of the width of the battery sheets 311 , the battery strings 31 can accommodate a large number of battery sheets 311 , thereby further improving the output power of the photovoltaic module 100 .

进一步可选地，X进一步满足：3≤X≤6。具体地，例如，当X＜3时，单个电池串31的电池片311的数量通常可以控制在三十个以内，无需在单个电池串31内再并联旁路二极管6来保护电路；当X＞6时，单个电池串31内的电池片311的数量过多，由于单个旁路二极管6保护的电池片311的数量通常小于等于三十个，导致旁路二极管6可能会击穿损坏。由此，通过使3≤X≤6，在有效减小光伏组件100的内部损耗的前提下，使旁路二极管6可以充分发挥其作用，在有效避免电池片311产生热斑效应的同时，可以避免旁路二极管6击穿损坏。Further optionally, X further satisfies: 3≤X≤6. Specifically, for example, when X<3, the number of battery slices 311 of a single battery string 31 can usually be controlled within thirty, and there is no need to connect the bypass diode 6 in parallel in the single battery string 31 to protect the circuit; when X> 6, the number of battery slices 311 in a single battery string 31 is too large. Since the number of battery slices 311 protected by a single bypass diode 6 is usually less than or equal to thirty, the bypass diode 6 may be broken down and damaged. Therefore, by setting 3≤X≤6, on the premise of effectively reducing the internal loss of the photovoltaic module 100, the bypass diode 6 can fully play its role, while effectively avoiding the hot spot effect of the cells 311, it can Avoid breakdown and damage of the bypass diode 6 .

在本公开的一些可选实施例中，每个电池片311的长度为L，每个电池片311的宽度为W ₃，其中，L满足：182mm≤L≤240mm，40mm≤W ₃≤80mm。由此，通过使L满足：182mm≤L≤240mm，电池片311的长度较大，从而可以提高光伏组件100有效发光面积，进而可以提高光伏组件100的转换效率以及输出功率，有效降低单瓦成本。可选地，L可以进一步满足：200mm≤L≤240mm。 In some optional embodiments of the present disclosure, the length of each cell 311 is L, and the width of each cell 311 is W ₃ , where L satisfies: 182mm≤L≤240mm, 40mm≤W _3≤80mm . Therefore, by making L satisfy: 182mm≤L≤240mm, the length of the cell 311 is relatively large, so that the effective light-emitting area of the photovoltaic module 100 can be increased, thereby the conversion efficiency and output power of the photovoltaic module 100 can be improved, and the cost per watt can be effectively reduced . Optionally, L may further satisfy: 200mm≤L≤240mm.

在本公开的一些实施例中，每个电池片311的厚度方向上的一侧表面上设有多个栅线，每个栅线沿第一互连结构件7的延伸方向延伸，且第一互连结构件7与对应的栅线电连接，每个电池片311的上述一侧表面上的栅线的数量为N，其中，N满足：5≤N≤7。例如，当N＜5时，栅线的数量过少，从而可能导致第一互连结构件7与对应的电池片311之间导出焊接拉力过低；当N＞7时，栅线的数量过多，从而对电池片311的遮挡面积过大，影响光伏组件100的输出功率，且会增加银浆的使用量，提高光伏组件100的成本。由此，通过使N满足：5≤N≤7，位于每个电池片311的一侧表面上的第一互连结构件7的数量可以为5～7，一方面，可以提高第一互连结构件7与对应的电池片311的焊接拉力；另一方面，可以增大电池片311的受光面积，将电池片311通过光生伏特效应产生的电流有效导出，保证光伏组件100具有较高的输出功率，且可以降低成本。In some embodiments of the present disclosure, a plurality of grid lines are provided on one surface of each cell sheet 311 in the thickness direction, each grid line extends along the extending direction of the first interconnection structure 7 , and the first The interconnection structure 7 is electrically connected to the corresponding grid lines, and the number of grid lines on the surface of each cell 311 is N, where N satisfies: 5≤N≤7. For example, when N<5, the number of grid lines is too small, which may lead to excessively low welding tension between the first interconnection structure 7 and the corresponding cell 311; when N>7, the number of grid lines is too high Therefore, the shielding area of the cell 311 is too large, which affects the output power of the photovoltaic module 100 , and increases the usage of silver paste, thereby increasing the cost of the photovoltaic module 100 . Therefore, by making N satisfy: 5≤N≤7, the number of the first interconnection structures 7 on one side surface of each cell 311 can be 5˜7. On the one hand, the first interconnection can be increased. The welding tension between the structural member 7 and the corresponding cell 311; on the other hand, the light-receiving area of the cell 311 can be increased, and the current generated by the cell 311 through the photovoltaic effect can be effectively derived, ensuring that the photovoltaic module 100 has a higher output. power and reduce costs.

在本公开的一些实施例中，第一互连结构件7包括彼此相连的第一连接段和第二连接段(图未示出)，第一连接段为非扁平段，第一连接段连接在电池片311的正面，第二连接段为扁平段，第二连接段连接在相邻的电池片311的背面。“扁平”可以理解为平而薄的形状，与宽度方向的尺寸相比，厚度方向的尺寸相对较小。例如，第一连接段的横截面形状可以为三角形或圆形。由此，通过设置上述的第一连接段和第二连接段，由于第一连接段为非扁平段，可以减小第二连接段对电池片311的遮挡面积，提高反射率，从而提高光伏组件100的输出功率，由于第二连接段为扁平段，第二连接段的宽度较大且厚度较小，当第二连接段与对应的电池片311焊接时，可以增加第二连接段与对应的电池片311之间的接触面积，从而使得第二连接段与电池片311之间具有较大的焊接拉力，连接更加牢靠，且可以减小背面封装材料的厚度，降低电池片311隐裂的风险。In some embodiments of the present disclosure, the first interconnecting structural member 7 includes a first connecting section and a second connecting section (not shown in the figure) that are connected to each other, the first connecting section is a non-flat section, and the first connecting section is connected On the front side of the battery sheet 311 , the second connection segment is a flat segment, and the second connection segment is connected to the backside of the adjacent battery sheet 311 . "Flat" can be understood as a flat and thin shape with a relatively small dimension in the thickness direction compared to the dimension in the width direction. For example, the cross-sectional shape of the first connecting segment may be triangular or circular. Therefore, by arranging the above-mentioned first connecting section and second connecting section, since the first connecting section is a non-flat section, the shielding area of the second connecting section to the cell 311 can be reduced, the reflectivity can be improved, and the photovoltaic module can be improved. 100 output power, since the second connecting section is a flat section, the width of the second connecting section is large and the thickness is small, when the second connecting section is welded with the corresponding cell 311, the second connecting section and the corresponding The contact area between the battery sheets 311 makes the second connection segment and the battery sheet 311 have a larger welding tension, the connection is more reliable, and the thickness of the back packaging material can be reduced, reducing the risk of cracking of the battery sheet 311 .

在本公开的一些可选实施例中，第一互连结构件7的至少与第一汇流条321相连的部分的厚度为T ₃，其中，所述T ₃满足：0.05mm≤T ₃≤0.2mm。由此，由于第一互连结构件7位于电池片311的背面，通过使T ₃满足：0.05mm≤T ₃≤0.2mm，第一互连结构件7的厚度较薄，从而可以有效避免电池片311产生裂片，提高了光伏组件100的可靠性。 In some optional embodiments of the present disclosure, the thickness of at least a portion of the first interconnecting structure member 7 connected to the first bus bar 321 is T ₃ , wherein T ₃ satisfies: 0.05mm≦T ₃ ≦0.2 mm. Therefore, since the first interconnection structure 7 is located on the back side of the battery sheet 311, by making T3 satisfy: _{0.05mm≤T3≤0.2mm} , the thickness _of the first interconnection structure 7 is relatively thin, so that the battery can be effectively avoided. The sheet 311 produces splits, which improves the reliability of the photovoltaic module 100 .

在本公开的一些实施例中，如图2-图4所示，沿电池串31延伸方向、相邻两个电池片311的彼此邻近的侧边之间的距离为片间距，每个电池串31的多个电池片311之间具有多个片间距，多个片间距中的至少两个不同。需要说明的是，片间距可以为正值也可以为负值。当片间距为正值时，电池串31内的相邻两个电池片311间隔设置以形成上述片间隙；当片间距为负值时，电池串31内的相邻两个电池片311的端部搭接，此时相邻两个电池片311的端部搭接部分的宽度为片间距的绝对值。In some embodiments of the present disclosure, as shown in FIG. 2 to FIG. 4 , along the extending direction of the battery strings 31 , the distance between the adjacent sides of two adjacent battery sheets 311 is the sheet spacing, and each battery string The plurality of battery sheets 311 of 31 have a plurality of sheet pitches, and at least two of the plurality of sheet pitches are different. It should be noted that the chip pitch may be a positive value or a negative value. When the chip spacing is a positive value, the two adjacent battery chips 311 in the battery string 31 are spaced to form the above-mentioned chip gap; when the chip spacing is a negative value, the ends of the two adjacent battery chips 311 in the battery string 31 are arranged at intervals. In this case, the width of the overlapping portion of the ends of two adjacent cell sheets 311 is the absolute value of the sheet spacing.

例如，在图2-图4的示例中，每个电池串31包括七个电池片311，相邻两个电池片311之间通过第二互连结构件9例如焊带相连。沿电池串31延伸方向、相邻两个电池片 311间隔设置，此时相邻两个电池片311之间的最小距离为片间距。由此，通过使多个片间距中的至少两个不同，当电池串31需要并联第一汇流条321时，可以使第一汇流条321设置在较大的片间隙处，从而可以进一步降低电池片311裂片的风险，提高光伏组件100的可靠性。For example, in the examples of FIGS. 2 to 4 , each battery string 31 includes seven battery sheets 311 , and two adjacent battery sheets 311 are connected by a second interconnecting structural member 9 such as a welding ribbon. Along the extending direction of the battery string 31, two adjacent battery sheets 311 are arranged at intervals, and the minimum distance between the two adjacent battery sheets 311 at this time is the sheet spacing. Therefore, by making at least two of the plurality of chip spacings different, when the battery string 31 needs to connect the first busbars 321 in parallel, the first busbars 321 can be arranged at a larger chip gap, so that the battery can be further reduced. The risk of splitting of the sheet 311 increases the reliability of the photovoltaic module 100 .

根据本公开实施例的光伏组件100的其他构成以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。Other structures and operations of the photovoltaic assembly 100 according to the embodiments of the present disclosure are known to those of ordinary skill in the art, and will not be described in detail here.

在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。Although embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and alterations can be made in these embodiments without departing from the principles and spirit of the present disclosure, The scope of the present disclosure is defined by the claims and their equivalents.

Claims

一种光伏组件，其特征在于，包括：A photovoltaic module, characterized in that, comprising:

多个电池串，多个所述电池串沿串排布方向排列，每个所述电池串包括沿与所述串排布方向垂直的电池串延伸方向排布的多个电池片，每个所述电池串内的相邻两个所述电池片之间通过第一互连结构件串联连接；A plurality of battery strings, the plurality of battery strings are arranged along a string arrangement direction, each of the battery strings includes a plurality of battery sheets arranged along a battery string extension direction perpendicular to the string arrangement direction, each of which is Two adjacent battery sheets in the battery string are connected in series through a first interconnection structure;

十字汇流条，所述十字汇流条包括第一汇流条和第二汇流条，所述第一汇流条沿所述串排布方向延伸，所述第一汇流条与所述第一互连结构件电连接，所述第二汇流条与所述第一汇流条电连接，所述第二汇流条沿所述电池串延伸方向延伸；a cross bus bar, the cross bus bar includes a first bus bar and a second bus bar, the first bus bar extends along the string arrangement direction, the first bus bar and the first interconnecting structural member electrically connected, the second bus bar is electrically connected to the first bus bar, and the second bus bar extends along the extending direction of the battery string;

其中，所述第一汇流条位于多个所述电池串内的所述电池片的背面，或Wherein, the first bus bar is located on the back of the battery sheets in the plurality of battery strings, or

每个所述电池串的至少相邻两个所述电池片间隔设置以形成片间隙，所述第一汇流条位于所述片间隙内。At least two adjacent battery sheets of each of the battery strings are arranged at intervals to form a sheet gap, and the first bus bar is located in the sheet gap.
根据权利要求1所述的光伏组件，其特征在于，当所述第一汇流条位于多个所述电池串内的所述电池片的背面时，The photovoltaic module according to claim 1, wherein when the first bus bar is located on the back of the battery sheets in the plurality of battery strings,

所述第一汇流条的至少部分位于多个所述电池串的其中一个所述电池片的背面；或At least part of the first bus bar is located on the back of one of the battery sheets of the plurality of battery strings; or

所述第一汇流条的宽度方向的两侧分别位于在所述电池串延伸方向上相邻两个所述电池片的背面。Both sides of the first bus bar in the width direction are respectively located on the backsides of two adjacent battery sheets in the extending direction of the battery string.
根据权利要求1所述的光伏组件，其特征在于，当所述第一汇流条位于所述片间隙内时，The photovoltaic module according to claim 1, wherein when the first bus bar is located in the sheet gap,

所述第一汇流条的宽度小于对应的所述片间隙的宽度，所述第一汇流条的宽度与对应的所述片间隙的宽度之差的绝对值为ΔL，其中，所述ΔL满足：4mm≤ΔL≤10mm。The width of the first bus bar is smaller than the width of the corresponding chip gap, and the absolute value of the difference between the width of the first bus bar and the corresponding width of the chip gap is ΔL, where the ΔL satisfies: 4mm≤ΔL≤10mm.
根据权利要求1所述的光伏组件，其特征在于，当所述第一汇流条位于所述片间隙内时，The photovoltaic module according to claim 1, wherein when the first bus bar is located in the sheet gap,

每个所述电池串的相邻两个所述电池片之间均具有所述片间隙，多个所述片间隙包括第一片间隙和多个第二片间隙，每个所述第二片间隙的宽度小于所述第一片间隙的宽度，所述第一汇流条位于所述第一片间隙内，所述光伏组件中除所述第一片间隙之外的所述片间隙为所述第二片间隙。There is a sheet gap between two adjacent cell sheets of each of the battery strings, and a plurality of the sheet gaps include a first sheet gap and a plurality of second sheet gaps, and each of the second sheet gaps The width of the gap is smaller than the width of the first sheet gap, the first bus bar is located in the first sheet gap, and the sheet gaps other than the first sheet gap in the photovoltaic module are the The second gap.
根据权利要求4所述的光伏组件，其特征在于，所述第一片间隙为S ₁，所述第二片间隙为S ₂，其中，所述S ₁、S ₂满足：3mm＜S ₁≤25mm，-2mm≤S ₂≤3mm。 The photovoltaic module according to claim 4, wherein the first sheet gap is S ₁ , the second sheet gap is S ₂ , wherein the S ₁ and S ₂ satisfy: 3mm<S ₁ ≤ 25mm, -2mm≤S ₂ ≤3mm.
根据权利要求4所述的光伏组件，其特征在于，所述第一片间隙内包含的电池片的数量为N ₁，所述第一片间隙内的多个所述电池片中的每相邻两个之间的所述片间隙为所述第二片间隙，其中，所述N ₁满足：N ₁≥20。 The photovoltaic module according to claim 4, wherein the number of cells included in the first gap is N ₁ , and each adjacent cell of the plurality of cells in the first gap is N 1 . The sheet gap between the two is the second sheet gap, wherein the N ₁ satisfies: N ₁ ≥20.
根据权利要求1-6任一项所述的光伏组件，其特征在于，所述第二汇流条位于相邻两个所述电池串之间的间隙处；或The photovoltaic module according to any one of claims 1-6, wherein the second bus bar is located at a gap between two adjacent battery strings; or

所述第二汇流条的至少部分位于所述电池串的背面。At least a portion of the second bus bar is located on the back side of the battery string.
根据权利要求1-7任一项所述的光伏组件，其特征在于，所述第一汇流条的宽度为W ₁，所述第一汇流条的厚度为T ₁，所述第二汇流条的宽度为W ₂，所述第二汇流条的厚度为T ₂，其中，所述W ₁、W ₂、T ₁、T ₂分别满足：3mm≤W ₁≤10mm，3mm≤W ₂≤10mm，0.15mm≤T ₁≤0.6mm，0.15mm≤T ₂≤0.6mm。 The photovoltaic module according to any one of claims 1-7, wherein the width of the first bus bar is W ₁ , the thickness of the first bus bar is T ₁ , and the thickness of the second bus bar is T 1 . The width is W ₂ , and the thickness of the second bus bar is T ₂ , wherein the W ₁ , W ₂ , T ₁ , and T ₂ satisfy: 3mm≤W ₁ ≤10mm, 3mm≤W ₂ ≤10mm, 0.15 mm≤T ₁ ≤0.6mm, 0.15mm≤T ₂ ≤0.6mm.
根据权利要求1-7任一项所述的光伏组件，其特征在于，所述第二汇流条和所述第一汇流条为一体结构。The photovoltaic module according to any one of claims 1-7, wherein the second bus bar and the first bus bar are of an integral structure.
根据权利要求1-7任一项所述的光伏组件，其特征在于，多个所述电池串的两端分别为正极引出端和负极引出端；The photovoltaic module according to any one of claims 1-7, wherein the two ends of the plurality of battery strings are respectively a positive terminal and a negative terminal;

所述光伏组件还包括：The photovoltaic module also includes:

多个旁路二极管，多个所述旁路二极管均通过所述第二汇流条反向并联在所述正极引出端和所述负极引出端之间，至少一个所述旁路二极管位于所述第二汇流条与所述第一汇流条的连接处与所述正极引出端之间，至少一个所述旁路二极管位于所述第二汇流条与所述第一汇流条的连接处与所述负极引出端之间。A plurality of bypass diodes, the plurality of bypass diodes are all connected in anti-parallel between the positive terminal and the negative terminal through the second bus bar, and at least one of the bypass diodes is located in the second bus bar. Between the connection between the second bus bar and the first bus bar and the positive terminal, at least one bypass diode is located between the connection between the second bus bar and the first bus bar and the negative electrode between the terminals.
根据权利要求10所述的光伏组件，其特征在于，多个所述旁路二极管分别位于所述第二汇流条的两端。The photovoltaic module according to claim 10, wherein a plurality of the bypass diodes are respectively located at both ends of the second bus bar.
根据权利要求10所述的光伏组件，其特征在于，所述第二汇流条与所述第一汇流条的连接处与所述正极引出端之间设有并联连接的至少两个所述旁路二极管；和/或The photovoltaic module according to claim 10, wherein at least two bypasses connected in parallel are provided between the connection between the second bus bar and the first bus bar and the positive terminal diode; and/or

所述第二汇流条与所述第一汇流条的连接处与所述负极引出端之间设有并联连接的至少两个所述旁路二极管。At least two bypass diodes connected in parallel are arranged between the connection between the second bus bar and the first bus bar and the negative terminal.
根据权利要求10所述的光伏组件，其特征在于，还包括：The photovoltaic module of claim 10, further comprising:

多个第二互连结构件，多个所述第二互连结构件与多个所述电池串的沿所述电池串延伸方向的两端的所述电池片电连接，且每个所述第二互连结构件的远离所述电池串中心的一端延伸至超出对应的所述电池片的远离所述电池串中心的一侧边缘；A plurality of second interconnecting structural members, the plurality of second interconnecting structural members are electrically connected to the battery sheets at both ends of the plurality of battery strings along the extending direction of the battery strings, and each of the second interconnecting structural members is One end of the two interconnecting structures that is far away from the center of the battery string extends beyond the edge of one side of the corresponding battery sheet that is far away from the center of the battery string;

多个端部汇流条，多个所述端部汇流条分别位于多个所述电池串的沿所述电池串延伸方向的两端，每个所述端部汇流条沿所述串排布方向延伸，每个所述端部汇流条与多个所述电池串的多个所述第二互连结构件均相连以使多个所述电池串并联连接，每个所述端部汇流条上设有引出线，所述旁路二极管连接在所述第二汇流条的端部与对应的所述引出线之间。a plurality of end bus bars, the plurality of end bus bars are respectively located at two ends of the plurality of battery strings along the extending direction of the battery strings, each of the end bus bars is arranged along the string arrangement direction extending, each of the end bus bars is connected to a plurality of the second interconnecting structure members of the plurality of battery strings to connect the plurality of battery strings in parallel, and each of the end bus bars is connected A lead wire is provided, and the bypass diode is connected between the end of the second bus bar and the corresponding lead wire.
根据权利要求13所述的光伏组件，其特征在于，进一步包括：The photovoltaic module of claim 13, further comprising:

正面盖板；front cover;

背面盖板，所述背面盖板设在所述正面盖板的厚度方向上的一侧，多个所述电池串位于所述正面盖板和所述背面盖板之间。A back cover plate, the back cover plate is arranged on one side of the front cover plate in the thickness direction, and the plurality of battery strings are located between the front cover plate and the back cover plate.
根据权利要求14所述的光伏组件，其特征在于，至少一个所述旁路二极管位于所述正面盖板和所述背面盖板之间；或The photovoltaic assembly of claim 14, wherein at least one of the bypass diodes is located between the front cover and the back cover; or

所述背面盖板上设有沿所述背面盖板的厚度方向贯通的两个过线孔，The back cover plate is provided with two wire-passing holes penetrating along the thickness direction of the back cover plate,

所述光伏组件进一步包括至少一个接线盒，所述接线盒设在所述背面盖板的远离所述正面盖板的一侧表面上，至少一个所述旁路二极管设在所述接线盒内，所述第二汇流条的端部和所述引出线分别穿过同一所述过线孔与所述旁路二极管相连。The photovoltaic assembly further comprises at least one junction box, the junction box is provided on the side surface of the back cover plate away from the front cover plate, and at least one of the bypass diodes is arranged in the junction box, The end of the second bus bar and the lead wire are respectively connected to the bypass diode through the same wire hole.
根据权利要求1-14中任一项所述的光伏组件，其特征在于，每个所述电池片为完整电池片的X分之一，其中，所述X为大于等于3的正整数，所述串排布方向为所述电池片的长度延伸方向，所述电池串延伸方向为所述电池片的宽度延伸方向。The photovoltaic module according to any one of claims 1-14, characterized in that, each of the cells is 1/X of a complete cell, wherein X is a positive integer greater than or equal to 3, so The string arrangement direction is the length extension direction of the battery sheets, and the battery string extension direction is the width extension direction of the battery sheets.
根据权利要求1-14中任一项所述的光伏组件，其特征在于，每个所述电池片的长度为L，其中，所述L满足：200mm≤L≤240mm。The photovoltaic module according to any one of claims 1-14, wherein the length of each of the cell sheets is L, wherein the L satisfies: 200mm≤L≤240mm.
根据权利要求1-14中任一项所述的光伏组件，其特征在于，每个所述电池片的厚度方向上的一侧表面上设有多个栅线，每个所述栅线沿所述第一互连结构件的延伸方向延伸，且所述第一互连结构件与对应的所述栅线电连接，每个所述电池片的所述一侧表面上的所述栅线的数量为N，其中，所述N满足：5≤N≤7。The photovoltaic module according to any one of claims 1-14, wherein a plurality of grid lines are provided on one side surface of each of the cell sheets in the thickness direction, and each of the grid lines is along the The extension direction of the first interconnection structure member extends, and the first interconnection structure member is electrically connected to the corresponding grid line, and the grid line on the one side surface of each of the battery sheets is The number is N, where N satisfies: 5≤N≤7.
根据权利要求1-14中任一项所述的光伏组件，其特征在于，所述第一互连结构件包括彼此相连的第一连接段和第二连接段，所述第一连接段为非扁平段，所述第一连接段连接在所述电池片的正面，所述第二连接段为扁平段，所述第二连接段连接在相邻的所述电池片的背面。The photovoltaic module according to any one of claims 1-14, wherein the first interconnecting structure member comprises a first connecting segment and a second connecting segment connected to each other, and the first connecting segment is a non- A flat segment, the first connection segment is connected to the front side of the battery sheet, the second connection segment is a flat segment, and the second connection segment is connected to the backside of the adjacent battery sheet.
根据权利要求1-14中任一项所述的光伏组件，所述第一互连结构件的至少与所述第一汇流条相连的部分的厚度为T ₃，其中，所述T ₃满足：0.05mm≤T ₃≤0.2mm。 The photovoltaic module according to any one of claims 1-14, wherein the thickness of at least a portion of the first interconnecting structure member connected to the first bus bar is T ₃ , wherein T ₃ satisfies: 0.05mm≤T ₃ ≤0.2mm.