阅读说明：本技术 一种板块互联高密度光伏组件电路 (Board interconnected high-density photovoltaic module circuit ) 是由 王永 巴义敏 吕井成 鲍家兴 李纪伟 于平 蒲雪莲 于 2019-09-11 设计创作，主要内容包括：本发明公开一种板块互联高密度光伏组件电路，所述光伏组件电路包括：第一光伏组件单元、第二光伏组件单元、第一旁路二极管、第二旁路二极管、第三旁路二极管、第四旁路二极管、第一虚拟线、第二虚拟线和第三虚拟线；通过第一虚拟线、第二虚拟线和第三虚拟线将电路划分为4个区域，每个区域配置一个旁路二极管，光伏组件竖排放置产生遮挡时，只要不超过第四组件区域的长度范围，仍然能够保证90％以上的发电量；本发明还结合了板块互联技术，引入多个第一横向互联电路线和多个第二横向互联电路线，实现了电路的整体互联和电流的自动分流，避免了严重热斑的出现，不仅整体上保护了组件材料，而且提升了组件的可靠性。(The invention discloses a plate-interconnected high-density photovoltaic module circuit, which comprises: the photovoltaic module comprises a first photovoltaic module unit, a second photovoltaic module unit, a first bypass diode, a second bypass diode, a third bypass diode, a fourth bypass diode, a first virtual line, a second virtual line and a third virtual line; the circuit is divided into 4 areas by the first virtual line, the second virtual line and the third virtual line, each area is provided with a bypass diode, and when the photovoltaic modules are placed in a vertical row to generate shielding, more than 90% of generated energy can still be ensured as long as the length range of the fourth module area is not exceeded; the invention also combines the plate interconnection technology, introduces a plurality of first transverse interconnection circuit lines and a plurality of second transverse interconnection circuit lines, realizes the whole interconnection of the circuits and the automatic shunting of current, avoids the occurrence of serious hot spots, not only protects the assembly material on the whole, but also improves the reliability of the assembly.)

1. A panel-interconnected high-density photovoltaic module circuit, comprising: the photovoltaic module comprises a first photovoltaic module unit, a second photovoltaic module unit, a first bypass diode, a second bypass diode, a third bypass diode, a fourth bypass diode, a first virtual line, a second virtual line and a third virtual line;

the anode of the first photovoltaic assembly unit is connected with the cathode of the second photovoltaic assembly unit, and the cathode of the first photovoltaic assembly unit is connected with the anode of the second photovoltaic assembly unit; the positive electrode of the first photovoltaic assembly unit is used as the positive electrode of the photovoltaic assembly circuit, and the negative electrode of the second photovoltaic assembly unit is used as the negative electrode of the photovoltaic assembly circuit; the first bypass diode, the second bypass diode and the third bypass diode are sequentially connected in series between the anode of the first photovoltaic assembly unit and the cathode of the second photovoltaic assembly unit in a reverse direction;

a first connecting point and a second connecting point are sequentially arranged between the anode of the first photovoltaic assembly unit and the cathode of the first photovoltaic assembly unit; one end of the first virtual line is connected with the first connecting point, and the other end of the first virtual line is connected with the anode of the first bypass diode; a third connection point and a fourth connection point are sequentially arranged between the negative electrode of the second photovoltaic assembly unit and the positive electrode of the second photovoltaic assembly unit; one end of the second virtual line is connected with the third connection point, and the other end of the second virtual line is connected with the negative electrode of the third bypass diode; the fourth bypass diode is connected in series in the reverse direction between the second connection point and the fourth connection point through the third virtual line.

2. The photovoltaic module circuit of claim 1, wherein the first photovoltaic module unit comprises a first string of cells, a second string of cells, and a third string of cells;

the first, second, and third battery strings are connected in parallel;

the first connection point position of the first battery string, the first connection point position of the second battery string and the first connection point position of the third battery string are connected in a point-sharing mode to form a first connection point of the first photovoltaic assembly unit;

and the second connection point position of the first battery string, the second connection point position of the second battery string and the second connection point position of the third battery string are connected in a concurrent manner to form a second connection point of the first photovoltaic module unit.

3. The photovoltaic module circuit of claim 2, wherein the second photovoltaic module unit comprises a fourth string of cells, a fifth string of cells, and a sixth string of cells;

the fourth, fifth and sixth battery strings are connected in parallel;

a third connection point of the fourth battery string, a third connection point of the fifth battery string and a third connection point of the sixth battery string are connected in a concurrent manner to form a third connection point of the second photovoltaic module unit;

and a fourth connection point of the fourth battery string, a fourth connection point of the fifth battery string and a fourth connection point of the sixth battery string are connected in a concurrent manner to form a fourth connection point of the second photovoltaic module unit.

4. The photovoltaic module circuit of claim 1, wherein the second connection point is equidistant from the negative pole of the first photovoltaic module cell and the fourth connection point is equidistant from the positive pole of the second photovoltaic module cell.

5. The photovoltaic module circuit of claim 2, wherein the first photovoltaic module unit further comprises a plurality of first lateral interconnection circuit lines;

the first photovoltaic module unit is provided with a plurality of first transverse interconnection circuit lines on the part between the anode of the first photovoltaic module unit and the first connecting point, and the first photovoltaic module unit is provided with at least one first transverse interconnection circuit line on the part between the first connecting point and the second connecting point;

the first battery string, the second battery string and the third battery string are all connected with the first transverse interconnection circuit line; the first transverse interconnection circuit line is parallel to the third virtual line; the first transverse interconnection circuit line is used for communicating the first transverse interconnection circuit line at corresponding positions of the first battery string, the second battery string and the third battery string.

6. The photovoltaic module circuit of claim 3, wherein the second photovoltaic module unit further comprises a plurality of second lateral interconnection circuit lines;

the second photovoltaic module unit is provided with a plurality of second transverse interconnection circuit lines on the part between the negative electrode of the second photovoltaic module unit and the third connection point, and the second photovoltaic module unit is provided with at least one second transverse interconnection circuit line on the part between the third connection point and the fourth connection point;

the fourth battery string, the fifth battery string and the sixth battery string are all connected with the second transverse interconnection circuit line; the second transverse interconnection circuit line is parallel to the third virtual line; and the second transverse interconnection circuit line is used for communicating the second transverse interconnection circuit line at the corresponding positions of the fourth battery string, the fifth battery string and the sixth battery string.

7. The photovoltaic module circuit of claim 3, wherein the first, second, third, fourth, fifth, and sixth cell strings each comprise a plurality of series-connected cell pieces; the number of battery pieces of the first battery string, the second battery string, the third battery string, the fourth battery string, the fifth battery string and the sixth battery string is equal.

8. The photovoltaic module circuit of claim 1, wherein the first, second, and third dummy lines are tin-coated copper tape.

9. The photovoltaic module circuit of claim 8, wherein the tin-coated copper tape is soldered to the back side of the photovoltaic module.

10. The photovoltaic module circuit of claim 1, wherein a length of a portion of the first photovoltaic module cell between the positive electrode of the first photovoltaic module cell and the first connection point is greater than half the length of the first photovoltaic module cell; the length of the portion of the second photovoltaic module unit between the negative electrode of the second photovoltaic module unit and the third connection point is greater than half the length of the second photovoltaic module unit.

Technical Field

The invention relates to the technical field of photovoltaics, in particular to a plate-block interconnected high-density photovoltaic module circuit.

Background

The photovoltaic module is also called a solar panel, is a core part in a solar power generation system, and is also the most important part in the solar power generation system.

The circuit structure of the traditional photovoltaic module is that 6 strings of battery pieces are all connected in series, and each two strings of battery pieces are provided with a bypass diode. When traditional photovoltaic module is arranged according to certain inclination vertically, the morning or afternoon sunlight incident angle is than lower, and the subassembly of front row can block a part of back row subassembly, forms to shelter from. When the shielded area of the back row of the cells is more than or equal to 20%, all the 3 bypass diodes are conducted, the output power of the photovoltaic module is almost 0, and the photovoltaic module can not generate electricity at all; when the shielded area of the back-row cell is less than 20%, 3 bypass diodes are not conducted, the power output by the photovoltaic module is greatly reduced, for example, when the shielded area of the back-row cell is 15%, the output power of the photovoltaic module is only 85% of the maximum output power, the shielded part can have a serious hot spot effect, the photovoltaic module is yellowed and burnt, and therefore long-term use of the photovoltaic module is affected.

Disclosure of Invention

In order to solve the technical defects in the prior art, the invention provides a slab-interconnected high-density photovoltaic module circuit, when photovoltaic modules are placed in a vertical row to generate shielding, more than 90% of generated energy can still be ensured as long as the length of the part of a first photovoltaic module unit between a second connecting point and the negative electrode of the first photovoltaic module unit is not exceeded; the invention also combines the plate interconnection technology to realize the whole interconnection of the circuit and the automatic shunt of the current, thereby avoiding the occurrence of serious hot spots, not only protecting the component material on the whole, but also improving the reliability of the component.

In order to achieve the purpose, the invention provides the following scheme:

a panel-interconnected high-density photovoltaic module circuit, the photovoltaic module circuit comprising: the photovoltaic module comprises a first photovoltaic module unit, a second photovoltaic module unit, a first bypass diode, a second bypass diode, a third bypass diode, a fourth bypass diode, a first virtual line, a second virtual line and a third virtual line;

the anode of the first photovoltaic assembly unit is connected with the cathode of the second photovoltaic assembly unit, and the cathode of the first photovoltaic assembly unit is connected with the anode of the second photovoltaic assembly unit; the positive electrode of the first photovoltaic assembly unit is used as the positive electrode of the photovoltaic assembly circuit, and the negative electrode of the second photovoltaic assembly unit is used as the negative electrode of the photovoltaic assembly circuit; the first bypass diode, the second bypass diode and the third bypass diode are sequentially connected in series between the anode of the first photovoltaic assembly unit and the cathode of the second photovoltaic assembly unit in a reverse direction;

a first connecting point and a second connecting point are sequentially arranged between the anode of the first photovoltaic assembly unit and the cathode of the first photovoltaic assembly unit; one end of the first virtual line is connected with the first connecting point, and the other end of the first virtual line is connected with the anode of the first bypass diode; a third connection point and a fourth connection point are sequentially arranged between the negative electrode of the second photovoltaic assembly unit and the positive electrode of the second photovoltaic assembly unit; one end of the second virtual line is connected with the third connection point, and the other end of the second virtual line is connected with the negative electrode of the third bypass diode; the fourth bypass diode is connected in series in the reverse direction between the second connection point and the fourth connection point through the third virtual line.

Optionally, the first photovoltaic module unit includes a first battery string, a second battery string and a third battery string;

the first, second, and third battery strings are connected in parallel;

the first connection point position of the first battery string, the first connection point position of the second battery string and the first connection point position of the third battery string are connected in a point-sharing mode to form a first connection point of the first photovoltaic assembly unit;

and the second connection point position of the first battery string, the second connection point position of the second battery string and the second connection point position of the third battery string are connected in a concurrent manner to form a second connection point of the first photovoltaic module unit.

Optionally, the second photovoltaic module unit includes a fourth battery string, a fifth battery string and a sixth battery string;

the fourth, fifth and sixth battery strings are connected in parallel;

a third connection point of the fourth battery string, a third connection point of the fifth battery string and a third connection point of the sixth battery string are connected in a concurrent manner to form a third connection point of the second photovoltaic module unit;

and a fourth connection point of the fourth battery string, a fourth connection point of the fifth battery string and a fourth connection point of the sixth battery string are connected in a concurrent manner to form a fourth connection point of the second photovoltaic module unit.

Optionally, the distance from the second connection point to the negative electrode of the first photovoltaic module unit is equal to the distance from the fourth connection point to the positive electrode of the second photovoltaic module unit.

Optionally, the first photovoltaic module unit further includes a plurality of first lateral interconnection circuit lines;

the first photovoltaic module unit is provided with a plurality of first transverse interconnection circuit lines on the part between the anode of the first photovoltaic module unit and the first connecting point, and the first photovoltaic module unit is provided with at least one first transverse interconnection circuit line on the part between the first connecting point and the second connecting point;

the first battery string, the second battery string and the third battery string are all connected with the first transverse interconnection circuit line; the first transverse interconnection circuit line is parallel to the third virtual line; the first transverse interconnection circuit line is used for communicating the first transverse interconnection circuit line at corresponding positions of the first battery string, the second battery string and the third battery string.

Optionally, the second photovoltaic module unit further includes a plurality of second lateral interconnection circuit lines;

the second photovoltaic module unit is provided with a plurality of second transverse interconnection circuit lines on the part between the negative electrode of the second photovoltaic module unit and the third connection point, and the second photovoltaic module unit is provided with at least one second transverse interconnection circuit line on the part between the third connection point and the fourth connection point;

the fourth battery string, the fifth battery string and the sixth battery string are all connected with the second transverse interconnection circuit line; the second transverse interconnection circuit line is parallel to the third virtual line; and the second transverse interconnection circuit line is used for communicating the second transverse interconnection circuit line at the corresponding positions of the fourth battery string, the fifth battery string and the sixth battery string.

Optionally, the first battery string, the second battery string, the third battery string, the fourth battery string, the fifth battery string, and the sixth battery string each include a plurality of battery pieces connected in series; the number of battery pieces of the first battery string, the second battery string, the third battery string, the fourth battery string, the fifth battery string and the sixth battery string is equal.

Optionally, the first virtual line, the second virtual line, and the third virtual line are tin-coated copper tapes.

Optionally, the tin-coated copper strip is welded to the back of the photovoltaic module.

Optionally, the length of the portion of the first photovoltaic module unit between the positive electrode of the first photovoltaic module unit and the first connection point is greater than half of the length of the first photovoltaic module unit; the length of the portion of the second photovoltaic module unit between the negative electrode of the second photovoltaic module unit and the third connection point is greater than half the length of the second photovoltaic module unit.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects:

according to the invention, a virtual line and four bypass diodes are introduced, when the photovoltaic module is vertically arranged and shielded, as long as the shielding length does not exceed the length of the part of the first photovoltaic module unit between the second connecting point and the negative electrode of the first photovoltaic module unit, the fourth bypass diode is conducted, the non-shielded area can still generate electricity, and the generated energy can reach more than 90% of that of the photovoltaic module in normal operation;

according to the invention, by combining the plate interconnection technology, a plurality of first transverse interconnection circuit lines and second transverse interconnection circuit lines are introduced, so that the overall interconnection of the circuits and the automatic current shunting are realized, when the local battery piece has internal hidden cracks or external shielding, the occurrence of serious hot spots is avoided, the component material is protected on the whole, and the reliability of the component is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a schematic circuit diagram of a board-interconnected high-density photovoltaic module circuit according to an embodiment of the present invention;

FIG. 2 is a schematic circuit diagram of a conventional photovoltaic module;

description of the symbols: 1-a first photovoltaic module unit, 2-a second photovoltaic module unit, 3-a first bypass diode, 4-a second bypass diode, 5-a third bypass diode, 6-a fourth bypass diode, 7-a first virtual line, 8-a second virtual line, 9-a third virtual line, 10-a first connection point, 11-a second connection point, 12-a third connection point, 13-a fourth connection point, 14-a first transverse interconnection circuit line, 15-a second transverse interconnection circuit line.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a slab-interconnected high-density photovoltaic module circuit, wherein when photovoltaic modules are vertically arranged to generate shielding, more than 90% of generated energy can still be ensured as long as the shielding length does not exceed the length of the part of a first photovoltaic module unit between a second connecting point and the negative electrode of the first photovoltaic module unit; the invention also combines the plate interconnection technology, realizes the whole interconnection of the circuit and the automatic shunt of the current, avoids the occurrence of serious hot spots, not only protects the component material on the whole, but also improves the reliability of the component.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The invention provides a board-interconnected high-density photovoltaic module circuit, as shown in fig. 1, the photovoltaic module circuit comprises: a first photovoltaic module unit 1, a second photovoltaic module unit 2, a first bypass diode 3, a second bypass diode 4, a third bypass diode 5, a fourth bypass diode 6, a first virtual line 7, a second virtual line 8, and a third virtual line 9;

the anode of the first photovoltaic assembly unit 1 is connected with the cathode of the second photovoltaic assembly unit 2, and the cathode of the first photovoltaic assembly unit 1 is connected with the anode of the second photovoltaic assembly unit 2; the positive electrode of the first photovoltaic assembly unit 1 is used as the positive electrode of the photovoltaic assembly circuit, and the negative electrode of the second photovoltaic assembly unit 2 is used as the negative electrode of the photovoltaic assembly circuit; a first bypass diode 3, a second bypass diode 4 and a third bypass diode 5 are sequentially connected in series between the anode of the first photovoltaic module unit 1 and the cathode of the second photovoltaic module unit 2 in a reverse direction;

a first connection point 10 and a second connection point 11 are sequentially arranged between the anode of the first photovoltaic assembly unit 1 and the cathode of the first photovoltaic assembly unit 1; one end of the first virtual line 7 is connected with the first connection point 10, and the other end of the first virtual line 7 is connected with the anode of the first bypass diode 3; a third connection point 12 and a fourth connection point 13 are sequentially arranged between the cathode of the second photovoltaic module unit 2 and the anode of the second photovoltaic module unit 2; one end of the second virtual line 8 is connected with the third connection point 12, and the other end of the second virtual line 8 is connected with the cathode of the third bypass diode 5; a fourth bypass diode 6 is reversely connected in series between the second connection point 11 and the fourth connection point 13 through a third virtual line 9; the first virtual line 7, the second virtual line 8 and the third virtual line 9 are all tin-coated copper strips, the tin-coated copper strips are welded on the back of the photovoltaic module, and the first virtual line 7 and the second virtual line 8 can lead out current to a bus bar at the head end of the photovoltaic module.

The first bypass diode 3, the first virtual line 7 and the portion of the first photovoltaic module unit 1 between the anode of the first photovoltaic module unit 1 and the first connection point 10 constitute a first module area; the length of the portion of the first photovoltaic module unit 1 between the positive electrode of the first photovoltaic module unit 1 and the first connection point 10 is greater than half the length of the first photovoltaic module unit 1; preferably, the length of the portion of the first photovoltaic module unit 1 between the positive pole of the first photovoltaic module unit 1 and the first connection point 10 is three quarters of the total length of the first photovoltaic module unit 1.

The third bypass diode 5, the second virtual line 8 and the part of the second photovoltaic module unit 2 between the cathode of the second photovoltaic module unit 2 and the third connection point 12 form a second module area; the length of the portion of the second photovoltaic module unit 2 between the negative electrode of the second photovoltaic module unit 2 and the third connection point 12 is greater than half the length of the second photovoltaic module unit 2; preferably, the length of the portion of the second photovoltaic module unit 2 between the negative pole of the second photovoltaic module unit 2 and the third connection point 12 is three quarters of the total length of the second photovoltaic module unit 2.

A third assembly area is formed by the second bypass diode 4, the first virtual line 7, the part of the first photovoltaic assembly unit 1 between the first connection point 10 and the second connection point 11, the third virtual line 9, the part of the second photovoltaic assembly unit 2 between the third connection point 12 and the fourth connection point 13 and the second virtual line 8; the length of the part of the first photovoltaic module unit 1 between the first connection point 10 and the second connection point 11 and the length of the part of the second photovoltaic module unit 2 between the third connection point 12 and the fourth connection point 13 depend on the technical design; preferably, in the embodiment of the present invention, the length of the portion of the first photovoltaic module unit 1 between the first connection point 10 and the second connection point 11 is three twentieth of the total length of the first photovoltaic module unit 1, and the length of the portion of the second photovoltaic module unit 2 between the third connection point 12 and the fourth connection point 13 is three twenty-twenty of the total length of the second photovoltaic module unit 2.

The third virtual line 9, the part of the first photovoltaic module unit 1 between the second connection point 11 and the negative electrode of the first photovoltaic module unit 1, and the part of the second photovoltaic module unit 2 between the fourth connection point 13 and the positive electrode of the second photovoltaic module unit 2 form a fourth module area; the length of the part of the first photovoltaic module unit 1 between the second connection point 11 and the negative pole of the first photovoltaic module unit 1 depends on the technical design; preferably, in the embodiment of the present invention, the length of the portion of the first photovoltaic module unit 1 between the second connection point 11 and the negative electrode of the first photovoltaic module unit 1 is one tenth of the total length of the first photovoltaic module unit 1, and the length of the portion of the second photovoltaic module unit 2 between the fourth connection point 13 and the positive electrode of the second photovoltaic module unit 2 is one tenth of the total length of the second photovoltaic module unit 2.

The first photovoltaic module unit 1 includes a first cell string, a second cell string, and a third cell string; the first battery string, the second battery string and the third battery string are connected in parallel; the first connecting point 10 position of the first battery string, the first connecting point 10 position of the second battery string and the first connecting point 10 position of the third battery string are connected in a point-sharing manner to form a first connecting point 10 of the first photovoltaic module unit 1; the second connection point 11 position of the first battery string, the second connection point 11 position of the second battery string and the second connection point 11 position of the third battery string are connected in a point-sharing manner to form a second connection point 11 of the first photovoltaic module unit 1.

The first photovoltaic module unit 1 further comprises a plurality of parallel first transverse interconnection circuit lines 14; the first photovoltaic module unit 1 is provided with a plurality of first transverse interconnection circuit lines 14 on the part between the anode of the first photovoltaic module unit 1 and the first connection point 10, and the first photovoltaic module unit 1 is provided with at least one first transverse interconnection circuit line 14 on the part between the first connection point 10 and the second connection point 11; the first battery string, the second battery string and the third battery string are all connected with a first transverse interconnection circuit line 14; the first transverse interconnection circuit line 14 is parallel to the third virtual line 9; the first transverse interconnection circuit line 14 is used for connecting the first transverse interconnection circuit line 14 at corresponding positions of the first battery string, the second battery string and the third battery string.

The second photovoltaic module unit 2 includes a fourth cell string, a fifth cell string, and a sixth cell string; the fourth battery string, the fifth battery string and the sixth battery string are connected in parallel; the third connection point 12 position of the fourth battery string, the third connection point 12 position of the fifth battery string and the third connection point 12 position of the sixth battery string are connected in a concurrent manner to form a third connection point 12 of the second photovoltaic module unit 2; the fourth connection point 13 position of the fourth battery string, the fourth connection point 13 position of the fifth battery string and the fourth connection point 13 position of the fifth battery string are connected in a point-sharing manner to form a fourth connection point 13 of the second photovoltaic module unit 2. The distance from the second connection point 11 to the negative pole of the first photovoltaic module unit 1 is equal to the distance from the fourth connection point 13 to the positive pole of the second photovoltaic module unit 2.

The second photovoltaic module unit 2 further comprises a plurality of parallel second transverse interconnection circuit lines 15; a plurality of second transverse interconnection circuit lines 15 are arranged on the part, between the negative electrode of the second photovoltaic assembly unit 2 and the third connection point 12, of the second photovoltaic assembly unit 2, and at least one second transverse interconnection circuit line 15 is arranged on the part, between the third connection point 12 and the fourth connection point 13, of the second photovoltaic assembly unit 2; the fourth battery string, the fifth battery string and the sixth battery string are all connected with a second transverse interconnection circuit line 15; the second transverse interconnection circuit line 15 is parallel to the third virtual line 9; the second transverse interconnection circuit line 15 is used for connecting the second transverse interconnection circuit line 15 at corresponding positions of the fourth battery string, the fifth battery string and the sixth battery string.

The first battery string, the second battery string, the third battery string, the fourth battery string, the fifth battery string and the sixth battery string comprise 10-14 battery pieces which are connected in series; the number of battery pieces of the first battery string, the second battery string, the third battery string, the fourth battery string, the fifth battery string and the sixth battery string is equal.

According to the plate-block-interconnected high-density photovoltaic module circuit, the whole module is divided into 4 module areas through the first virtual line 7, the second virtual line 8 and the third virtual line 9, each module area is provided with the bypass diode, once the photovoltaic module is placed in a vertical row, the rear-row module is shielded, as long as the shielding does not exceed the length range of one tenth of the fourth module area, the fourth bypass diode 6 of the fourth module area is conducted, the first module area, the second module area and the third module area can still generate electricity, the generated energy still has more than 90% of that of the module in normal work, and the output power of the photovoltaic module is improved;

because the first assembly area or the second assembly area is three-fourths of the length of the whole assembly, when the third assembly area and the fourth assembly area are shielded, the second bypass diode 4 of the third assembly area is conducted, the first assembly area and the second assembly area can still generate electricity, and the electricity generation amount is still about 75% of that of the assembly in normal operation;

the invention also innovatively designs plate interconnection, namely a plurality of first transverse interconnection circuit lines 14 and second transverse interconnection circuit lines 15, wherein the number of the first transverse interconnection circuit lines 14 and the second transverse interconnection circuit lines 15 is within the range of 1-40 according to specific design. The plate interconnection connects the whole circuit on the assembly, the current shunting is realized, when the local battery plate is internally hidden or externally shielded, the local battery plate can be balanced by interconnection, the shunting is realized, the photovoltaic assembly can not generate serious hot spots, the reliability and the service life of the assembly are improved, the hidden crack resistance and the tolerance of the whole assembly are improved, and compared with the traditional photovoltaic assembly (shown in figure 2), the influence of hidden cracks on the assembly power generation capacity is reduced, and the assembly power generation capacity and the single-watt power generation capacity are improved.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.