阅读说明：本技术 一种新型晶硅电池组件及太阳能电池板 (Novel crystalline silicon battery pack and solar cell panel ) 是由 陆文华 倪志春 蔡霞 陈成锦 柯坡 曹海波 余嫦 吴镇 于 2019-09-26 设计创作，主要内容包括：本发明公开一种新型晶硅电池组件及太阳能电池板,一种新型晶硅电池组件包括；多个晶硅电池串、汇流条以及两个二极管,晶硅电池串通过多片晶硅电池小片连接而成,且晶硅电池小片由光伏电池片切割而成,且一片光伏电池片切割出至少三片晶硅电池小片；多个晶硅电池串通过串联、并联、串并联中的一种或多种连接方式进行连接,构成晶硅电池组件,晶硅电池组件的引出端设有三个二极管,且晶硅电池组件引出端设置于晶硅电池组件长边的相对两侧。本发明能够提高组件输出功率和组件整体的抗机械载荷能力提升,抗热斑性能等。(The invention discloses a novel crystalline silicon cell assembly and a solar cell panel, the novel crystalline silicon cell assembly comprises a solar cell panel, a solar cell panel and a solar cell panel, wherein the solar cell panel comprises a solar cell panel and a solar cell panel; the solar cell comprises a plurality of crystalline silicon cell strings, a bus bar and two diodes, wherein the crystalline silicon cell strings are formed by connecting a plurality of crystalline silicon cell slices, the crystalline silicon cell slices are formed by cutting photovoltaic cell slices, and at least three crystalline silicon cell slices are cut from one photovoltaic cell slice; the crystal silicon battery strings are connected in one or more of series connection, parallel connection and series-parallel connection to form a crystal silicon battery assembly, three diodes are arranged at the leading-out end of the crystal silicon battery assembly, and the leading-out end of the crystal silicon battery assembly is arranged on two opposite sides of the long edge of the crystal silicon battery assembly. The invention can improve the output power of the component, improve the mechanical load resistance of the whole component, and improve the hot spot resistance and the like.)

1. A novel crystalline silicon cell assembly, comprising; the solar cell comprises a plurality of crystalline silicon cell strings, a bus bar and two diodes, wherein the crystalline silicon cell strings are formed by connecting a plurality of crystalline silicon cell slices, the crystalline silicon cell slices are formed by cutting photovoltaic cell slices, and at least three crystalline silicon cell slices are cut from one photovoltaic cell slice;

the crystal silicon battery strings are connected in one or more of series connection, parallel connection and series-parallel connection to form the crystal silicon battery assembly, three diodes are arranged at the leading-out end of the crystal silicon battery assembly, and the leading-out end of the crystal silicon battery assembly is arranged on two opposite sides of the long edge of the crystal silicon battery assembly.

2. The novel crystalline silicon battery assembly as claimed in claim 1, wherein adjacent crystalline silicon battery dies in the same crystalline silicon battery string are welded by solder strips.

3. The novel crystalline silicon battery pack as claimed in claim 1 or 2, wherein the main grid lines on the crystalline silicon battery piece are parallel to the short side of the crystalline silicon battery piece, and the main grid lines on the crystalline silicon battery piece are perpendicular to the long side of the crystalline silicon battery piece;

the short sides of the crystalline silicon battery chips are parallel to the short sides of the crystalline silicon battery assembly, and the long sides of the crystalline silicon battery chips are parallel to the long sides of the crystalline silicon battery assembly.

4. The novel crystalline silicon cell assembly of claim 3, wherein the crystalline silicon cell string comprises: first battery cluster, second battery cluster and third battery cluster, first battery cluster and third battery cluster are by a plurality of forward connections respectively the crystal silicon battery piece is constituteed, the second battery cluster is by a plurality of reverse connections the crystal silicon battery piece is constituteed, first battery cluster, second battery cluster and third battery cluster contain the equal same of quantity of crystal silicon battery piece.

5. The novel crystalline silicon cell assembly of claim 4, wherein the first, second and third cell strings have their own lengths parallel to the short side of the crystalline silicon cell assembly.

6. The novel crystalline silicon cell assembly of claim 5, wherein all of the first cell strings are arranged in parallel with each other, all of the second cell strings are arranged in parallel with each other, and all of the third cell strings are arranged in parallel with each other.

7. The novel crystalline silicon cell assembly of claim 6,

the leading-out ends of one side of the first battery string are all electrically connected through a first transverse bus bar, the leading-out ends of one side of the second battery string and the leading-out ends of one side of the third battery string are all electrically connected through a second transverse bus bar, and the first transverse bus bar and the second transverse bus bar are electrically connected through two diodes which are arranged in series;

on the opposite side of the long side of the crystal silicon battery component, the leading-out end on the other side of the first battery string and the leading-out end on the other side of the second battery string are all electrically connected through a third transverse bus bar, and the leading-out end on the other side of the third battery string is all electrically connected through a fourth transverse bus bar;

the third transverse bus bar is electrically connected with a conductive part between the two series diodes through a first longitudinal bus bar, and the first longitudinal bus bar is arranged between the first battery string and the second battery string;

the second transverse bus bar is electrically connected with the fourth transverse bus bar through a second longitudinal bus bar, and a diode is connected in series on the second longitudinal bus bar.

8. The novel crystalline silicon cell assembly of claim 7, wherein the first longitudinal bus bar is disposed between the first cell string and the second cell string;

the second longitudinal bus bar is disposed between the second battery string and a third battery string.

9. The novel crystalline silicon cell assembly of claim 8, wherein the first, second, third and fourth lateral bus bars have their own lengths parallel to the long sides of the crystalline silicon cell assembly and are disposed at edge positions of the crystalline silicon cell assembly;

the self lengths of the first longitudinal bus bar and the second longitudinal bus bar are parallel to the short side of the crystalline silicon cell assembly and are arranged in the middle of the crystalline silicon cell assembly.

10. A solar photovoltaic panel comprising the novel crystalline silicon cell assembly of any one of claims 1 to 9.

Technical Field

The invention belongs to the field of solar photovoltaics, and particularly relates to a novel crystalline silicon battery assembly and a solar panel.

Background

With the rapid development of high-efficiency batteries, the short-circuit current (Is) of the battery Is continuously increased, and in order to reduce the series resistance (Rs), the dicing welding Is a trend, so that the conventional half chip assembly Is popularized, but the conventional silicon battery assembly Is complicated in layout, too long in bus bar and difficult to process in actual operation.

Disclosure of Invention

In order to solve the technical problems, the invention provides a novel crystalline silicon battery assembly and a solar cell panel.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a novel crystalline silicon cell assembly comprising; the solar cell comprises a plurality of crystalline silicon cell strings, a bus bar and two diodes, wherein the crystalline silicon cell strings are formed by connecting a plurality of crystalline silicon cell slices, the crystalline silicon cell slices are formed by cutting photovoltaic cell slices, and at least three crystalline silicon cell slices are cut from one photovoltaic cell slice;

the crystal silicon battery strings are connected in one or more of series connection, parallel connection and series-parallel connection to form a crystal silicon battery assembly, three diodes are arranged at the leading-out end of the crystal silicon battery assembly, and the leading-out end of the crystal silicon battery assembly is arranged on two opposite sides of the long edge of the crystal silicon battery assembly.

The invention cuts at least 3 photovoltaic cells into whole photovoltaic cells to make assemblies, further reduces Is and Rs, adopts a better circuit design and typesetting mode, has the whole voltage and current close to those of the conventional assemblies, does not influence the system matching of the rear end, and can improve the output power of the assemblies, improve the mechanical load resistance of the assemblies, improve the hot spot resistance and the like.

On the basis of the technical scheme, the following improvements can be made:

in the preferable scheme, adjacent crystalline silicon battery chips in the same crystalline silicon battery string are welded through welding strips.

By adopting the preferred scheme, the welding strips are used for connection, and the flexible connection between the sheets can improve the mechanical load resistance.

According to the preferable scheme, the main grid lines on the crystalline silicon battery chip are parallel to the short sides of the crystalline silicon battery chip, and the main grid lines on the crystalline silicon battery chip are perpendicular to the long sides of the crystalline silicon battery chip;

the short sides of the crystalline silicon battery pieces are parallel to the short sides of the crystalline silicon battery assembly, and the long sides of the crystalline silicon battery pieces are parallel to the long sides of the crystalline silicon battery assembly.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Preferably, the crystalline silicon cell string includes: the battery pack comprises a first battery string, a second battery string and a third battery string, wherein the first battery string and the third battery string are respectively composed of a plurality of forward-connected crystalline silicon battery pieces, the second battery string is composed of a plurality of reverse-connected crystalline silicon battery pieces, and the number of the crystalline silicon battery pieces contained in the first battery string, the second battery string and the third battery string is the same.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Preferably, the lengths of the first cell string, the second cell string and the third cell string are parallel to the short side of the crystalline silicon cell assembly.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Preferably, all the first battery strings are arranged in parallel with each other, all the second battery strings are arranged in parallel with each other, and all the third battery strings are arranged in parallel with each other.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Preferably, the leading-out terminals on one side of the first battery string are electrically connected through a first transverse bus bar, the leading-out terminals on one side of the second battery string are electrically connected with the leading-out terminals on one side of the third battery string through a second transverse bus bar, and the first transverse bus bar and the second transverse bus bar are electrically connected through two diodes which are arranged in series;

on the opposite side of the long side of the crystal silicon battery component, the leading-out end on the other side of the first battery string and the leading-out end on the other side of the second battery string are all electrically connected through a third transverse bus bar, the leading-out end on the other side of the third battery string is all electrically connected through a fourth transverse bus bar, the third transverse bus bar is electrically connected with a conductive part between the two series diodes through a first longitudinal bus bar, and the first longitudinal bus bar is arranged between the first battery string and the second battery string;

the second transverse bus bar is electrically connected with the fourth transverse bus bar through the second longitudinal bus bar, and a diode is connected in series on the second longitudinal bus bar.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Preferably, the first longitudinal bus bar is disposed between the first cell string and the second cell string;

the second longitudinal bus bar is disposed between the second cell string and the third cell string.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Preferably, the self lengths of the first transverse bus bar, the second transverse bus bar, the third transverse bus bar and the fourth transverse bus bar are parallel to the long side of the crystalline silicon battery assembly and are arranged at the edge position of the crystalline silicon battery assembly;

the self lengths of the first longitudinal bus bar and the second longitudinal bus bar are parallel to the short side of the crystalline silicon battery assembly and are arranged in the middle of the crystalline silicon battery assembly.

By adopting the preferred scheme, the crystal silicon cell modules are arranged in a series-parallel connection and series connection mode, and the heads and the tails of the crystal silicon cell modules are positioned at two sides of the modules; the leading-out terminals are positioned at two opposite sides of the crystalline silicon battery component and adopt 3 diodes.

The invention also discloses a solar photovoltaic cell panel which comprises the novel crystalline silicon cell component.

Drawings

Fig. 1 is a schematic structural diagram of a high-efficiency crystalline silicon cell assembly according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of fig. 1, in which a first battery string, a second battery string, and a third battery string are identified.

Fig. 3 is a corresponding circuit diagram of fig. 1.

Fig. 4 is a schematic diagram of fig. 3 showing the first battery string, the second battery string, and the third battery string.

Wherein: the solar cell comprises a crystalline silicon cell 1, a main grid line 11, a first cell string 21, a second cell string 22, a third cell string 23, a first longitudinal bus bar 31, a second longitudinal bus bar 32, a diode 4, a first transverse bus bar 51, a second transverse bus bar 52, a third transverse bus bar 53 and a fourth transverse bus bar 54.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In order to achieve the object of the present invention, in some embodiments of a novel crystalline silicon cell assembly and solar panel,

as shown in fig. 1-4, a novel crystalline silicon cell assembly includes; the solar cell comprises a plurality of crystalline silicon cell strings, a bus bar and two diodes 4, wherein the crystalline silicon cell strings are formed by connecting a plurality of crystalline silicon cell slices 1, the crystalline silicon cell slices 1 are formed by cutting photovoltaic cell slices, and three crystalline silicon cell slices 1 are cut from one photovoltaic cell slice;

the crystal silicon battery strings are connected in one or more of series connection, parallel connection and series-parallel connection to form a crystal silicon battery assembly, three diodes 4 are arranged at the leading-out end of the crystal silicon battery assembly, and the leading-out end of the crystal silicon battery assembly is arranged on two opposite sides of the long edge of the crystal silicon battery assembly.

The invention cuts 3 photovoltaic cells into a whole photovoltaic cell and then manufactures the assembly, so that Is and Rs are further reduced, a better circuit design and typesetting mode Is adopted, the whole voltage and current are close to those of the conventional assembly, the system matching of the rear end Is not influenced, the output power of the assembly can be improved, the mechanical load resistance of the whole assembly Is improved, the hot spot resistance Is improved, and the like.

In order to further optimize the implementation effect of the invention, in other embodiments, the rest features are the same, except that in the same crystalline silicon cell string, the adjacent crystalline silicon cell pieces 1 are welded through welding strips.

By adopting the preferred scheme, the welding strips are used for connection, and the flexible connection between the sheets can improve the mechanical load resistance.

Further, the main grid lines 11 on the crystalline silicon battery chip 1 are parallel to the short sides of the crystalline silicon battery chip 1, and the main grid lines 11 on the crystalline silicon battery chip 1 are perpendicular to the long sides of the crystalline silicon battery chip 1;

the short side of the crystalline silicon battery piece 1 is parallel to the short side of the crystalline silicon battery assembly, and the long side of the crystalline silicon battery piece 1 is parallel to the long side of the crystalline silicon battery assembly.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Further, the crystalline silicon cell string includes: the three first battery strings 21, the three second battery strings 22 and the three third battery strings 23 are provided, the first battery strings 21 and the third battery strings 23 are respectively composed of a plurality of forward-connected crystalline silicon battery pieces 1, the second battery strings 22 are composed of a plurality of reverse-connected crystalline silicon battery pieces 1, and the number of the crystalline silicon battery pieces 1 contained in the first battery strings 21, the second battery strings 22 and the third battery strings 23 is the same.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Further, the first cell string 21, the second cell string 22, and the third cell string 23 have their own lengths parallel to the short sides of the crystalline silicon cell assembly.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Further, all of the three first battery strings 21 are arranged in parallel with each other, all of the three second battery strings 22 are arranged in parallel with each other, and all of the three third battery strings 23 are arranged in parallel with each other.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Further, on the side close to the long side of the crystalline silicon battery pack, the leading-out terminals on one side of the first cell string 21 are all electrically connected through the first transverse bus bar 51, the leading-out terminals on one side of the second cell string 22 and the leading-out terminals on one side of the third cell string 23 are all electrically connected through the second transverse bus bar 52, and the first transverse bus bar 51 and the second transverse bus bar 52 are electrically connected through the two diodes 4 arranged in series;

on the opposite side of the long side of the crystalline silicon battery assembly, the leading-out terminal on the other side of the first battery string 21 and the leading-out terminal on the other side of the second battery string 22 are all electrically connected through a third transverse bus bar 53, the leading-out terminal on the other side of the third battery string 233 is all electrically connected through a fourth transverse bus bar 54, the third transverse bus bar 53 is electrically connected with a conductive part between the two series diodes 4 through a first longitudinal bus bar 31, and the first longitudinal bus bar 31 is arranged between the first battery string 21 and the second battery string 22;

the second transverse bus bar 52 is electrically connected to the fourth transverse bus bar 54 via the second longitudinal bus bar 32, and a diode 4 is connected in series to the second longitudinal bus bar 32.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Further, the first longitudinal bus bar 31 is disposed between the first cell string 21 and the second cell string 22;

the second longitudinal bus bar 32 is disposed between the second cell string 22 and the third cell string 23.

By adopting the preferable scheme, the typesetting is more reasonable and the layout is more compact.

Further, the self lengths of the first transverse bus bar 51, the second transverse bus bar 52, the third transverse bus bar 53 and the fourth transverse bus bar 54 are parallel to the long side of the crystalline silicon cell assembly and are arranged at the edge position of the crystalline silicon cell assembly;

the first and second longitudinal bus bars 31 and 32 have their own lengths parallel to the short sides of the crystalline silicon cell assembly and are disposed at the middle of the crystalline silicon cell assembly.

By adopting the preferred scheme, the crystal silicon cell modules are arranged in a series-parallel connection and series connection mode, and the heads and the tails of the crystal silicon cell modules are positioned at two sides of the modules; the leading-out terminals are positioned at two opposite sides of the crystalline silicon battery component, and 3 diodes 4 are adopted.

As shown in fig. 3 and 4, one end "-" of two diodes arranged in series is a leading-out end of the crystalline silicon cell assembly; and one end "+" of the diode arranged on the second longitudinal bus bar in series is the other leading-out end of the crystalline silicon battery component.

After the whole battery is cut into 3 pieces, parallel typesetting is carried out according to the figure 1, so that the single-string current can be reduced, the current loss is reduced, and the power output is increased;

after the three batteries are cut, the gaps between the batteries and the battery strings are more dense than those of the conventional assembly, and the light reflection area of the back plate surface of the assembly can be increased, so that the utilization rate of light is increased to increase the power.

The invention also discloses a solar photovoltaic cell panel which comprises the novel crystalline silicon cell component.

With respect to the preferred embodiments of the present invention, it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are within the scope of the present invention.