TWI734077B - Photovoltaic module - Google Patents

Abstract

A photovoltaic module including a plurality of solar cells, a plurality of first connectors, a plurality of second connectors and at least one third connector. The plurality of solar cells are arranged in a first direction. The plurality of first connectors are respectively disposed on front surfaces of the plurality of solar cells, and the plurality of first connectors extend in a second direction different from the first direction. The plurality of second connectors are respectively disposed on rear surfaces of the plurality of solar cells, and the plurality of second connectors extend in a third direction different from the first direction. The at least one third connector is located beside a side of the plurality of solar cells, extends along the side, and connects an end of the first connector on one of two adjacent ones of the plurality of solar cells with an end of the second connector on other one of the two adjacent ones of the plurality of solar cells.

Description

Solar Photoelectric Module

The present invention relates to a photovoltaic module, and in particular to a solar photovoltaic module.

Generally speaking, in existing solar cells, a plurality of finger electrodes are usually arranged on the solar cell body. The finger electrodes are used to collect the current generated by the solar cell body due to light irradiation, and then the bus bar is used to collect the current. The currents collected by multiple finger electrodes then lead these currents out.

However, as the photoelectric conversion efficiency of solar cells continues to improve, how to improve the photoelectric conversion efficiency and output power of the solar photovoltaic module is also an important topic currently faced by those skilled in the art. Among them, reducing the arrangement gap of the solar cells in the solar photovoltaic module to increase the effective power generation area of the module is a technical solution adopted by the back electrode solar photovoltaic module and the laminated solar photovoltaic module.

The invention provides a solar photoelectric module with good photoelectric conversion efficiency.

The solar photovoltaic module of an embodiment of the present invention includes a plurality of solar cells, a plurality of first connecting members, a plurality of second connecting members, and at least one third connecting member. A plurality of solar cells are arranged along the first direction. The plurality of first connecting members are respectively arranged on the front surfaces of the plurality of solar cell sheets, and the plurality of first connecting members extend in a second direction different from the first direction. The plurality of second connecting members are respectively disposed on the back surfaces of the plurality of solar cells, and the plurality of second connecting members extend in a third direction different from the first direction. At least one third connecting member is located beside the side surface of the plurality of solar cells, extends along the side surface, and connects one end of the first connecting member on one of the two adjacent ones of the plurality of solar cell sheets and two of the plurality of solar cell sheets One end of the second connector on the other of the neighbors.

Based on the above, the solar photovoltaic module of an embodiment of the present invention has a third connector located on the side of the solar cell, and the first connector on one of the adjacent solar cells can pass through the third connector and the phase. The second connector on the other of the adjacent solar cells is connected, and the connector does not need to pass through the overlapping area between two adjacent solar cells, which can reduce the number of solar cells in the lamination process. Causes the risk of solar cell rupture. In addition, the arrangement of the third connecting member on the side does not affect the effective light-receiving area, so that the electric energy generated by the light can be effectively transferred to another adjacent solar cell through the third connecting member on the side to maintain good photoelectricity. Conversion efficiency.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

FIG. 1A is a schematic top view of a solar photovoltaic module according to an embodiment of the present invention. Fig. 1B is a schematic side view of the solar photovoltaic module according to Fig. 1A on a side adjacent to the section line I-I'. 1A and 1B, in this embodiment, the solar photovoltaic module 100A includes a plurality of solar cells 110, a plurality of first connecting members 120, a plurality of second connecting members 130, at least one third connecting member 140 . In this embodiment, each solar cell 110 has a front surface 112 and a back surface 114, wherein the front surface 112 is the light-receiving surface, and the back surface 114 is the backlight surface. However, the present invention is not limited to this. In other embodiments, the front surface 112 and the back surface 114 may be light-receiving surfaces at the same time. In this embodiment, the number of the plurality of solar cells 110 is only three in the embodiment of FIG. 1A and FIG. 1B. However, those skilled in the art can increase or decrease the number of solar cells 110 according to actual conditions, and the present invention is not limited thereto. Each solar cell 110 may include a plurality of stacked semiconductor layers, such as an N-type semiconductor layer and a P-type semiconductor layer. In some embodiments, each solar cell 110 may be a 6-inch silicon-based solar cell. In other embodiments, each solar cell 110 can be independently 1/2 cut, 1/3 cut, 1/4 cut, 1/5 cut, 1/6 cut, 1/7 cut or 1/8 cut. 6-inch silicon-based solar cell cutting sheet, the present invention is not limited to this. If the solar cell 110 is a 6-inch solar cell cutting sheet, since the current generated by the 6-inch solar cell cutting sheet is lower than that of a 6-inch silicon-based solar cell sheet, the ohmic loss of the 6-inch solar cell cutting sheet is higher than that of 6 inches The ohmic loss of silicon-based solar cells is still low.

In this embodiment, a plurality of solar cells 110 are sequentially arranged in an overlapping manner along the first direction D1. The front surface 112 of one of the two adjacent solar cell sheets 110 partially overlaps with the back surface 114 of the other of the two adjacent solar cell sheets 110 to form an overlapping area 150. For example, a part of the front surface 112 of the solar cell sheet 110-1 overlaps with a part of the back surface 114 of the solar cell sheet 110-2 to form an overlapping area 150-1. A part of the front surface 112 of the solar cell sheet 110-2 overlaps with a part of the back surface 114 of the solar cell sheet 110-3 to form an overlapping area 150-2. In this embodiment, when the plurality of solar cells 110 are arranged along the first direction D1, the angle between the normal direction of the front surface 112 of each of the plurality of solar cells 110 and the first direction D1 is not perpendicular (not shown) ). In other words, the plurality of solar cell pieces 110 are arranged obliquely with respect to the first direction D1.

In this embodiment, the front side 112 of one of the two adjacent solar cells 110 and the back side 114 of the other of the two adjacent solar cells 110 are in direct contact in the overlap area 150, such as line contact. Or face contact. For example, the front 112 of the solar cell 110-1 and the back 114 of the solar cell 110-2 are in direct contact at the overlap area 150-1. The front 112 of the solar cell 110-2 and the back 114 of the solar cell 110-3 are in direct contact at the overlap area 150-2. In other words, two adjacent solar cell sheets 110 arranged in the first direction D1 are connected to each other, and there is no gap between the two adjacent solar cell sheets 110. In this way, the plurality of solar cells 110 can be arranged more closely, so that the effective power generation area per unit area of the solar photovoltaic module can be increased, which helps to improve the photoelectric conversion efficiency of the solar photovoltaic module.

In this embodiment, the plurality of first connecting members 120 are respectively disposed on the front surface 112 of the plurality of solar cell sheets 110 and extend in a second direction D2 different from the first direction D1. The plurality of second connecting members 130 are respectively disposed on the back surface 114 of the plurality of solar cell sheets 110 and extend in a third direction (a second direction D2) different from the first direction D1. In this embodiment, the first direction D1 is substantially perpendicular to the second direction D2. In this embodiment, the third direction and the second direction D2 are the same. In other embodiments, the third direction and the second direction D2 may be different directions, and the invention is not limited thereto.

In this embodiment, the orthographic projections of the plurality of first connecting members 120 and the plurality of second connecting members 130 on the plurality of solar cell sheets 110 are alternately arranged. In other words, the orthographic projection of the second connecting member 130 of one of the two adjacent solar cell sheets 110 is located between the orthographic projections of the first connecting member 120 of each of the two adjacent solar cell sheets 110. In this embodiment, when the number of the solar cell 110 is N, and the N solar cell 110 are arranged in sequence in the first direction D1, the first connection on the first solar cell 110-1 The distance between the orthographic projection of the element 120 and the orthographic projection of the second connector 130 on the second solar cell 110-2 is T1, and the orthographic projection of the first connector 120 on the second solar cell 110-2 The distance between the projection and the orthographic projection of the second connector 130 on the third solar cell 110-3 is T2, where the distance T1 is the same as the distance T2, and so on, to the N-1th solar cell The distance between the orthographic projection of the first connector 120 on the 110 and the orthographic projection of the second connector 130 on the Nth solar cell 110 can be the same, but the present invention is not limited to this. In other embodiments, those skilled in the art can adjust the distance according to actual needs.

In this embodiment, each solar cell 110 further includes side surfaces 116 and 118, wherein the side surface 116 is arranged in the second direction D2 and the side surface 118 is arranged in the first direction D1. In this embodiment, at least one third connecting member 140 is located beside the side surface 116 of the plurality of solar cells 110, extends along the side surface 116, and connects the first connection member on one of the two adjacent ones of the plurality of solar cells 110. One end of the connecting member 120 and one end of the second connecting member 130 on the other of the two adjacent solar cells 110.

In this embodiment, the two third connecting members 140 can be respectively connected to opposite ends of the first connecting member 120 of one of the two adjacent solar cells 110, and the two third connecting members 140 can be respectively connected to two The opposite ends of the second connecting member 130 on the other of the adjacent solar cell sheets 110 form a closed circuit, and the orthographic projection of the closed circuit is a square shape. In this embodiment, each third connecting member 140 may also extend from the second direction D2 and be connected to the corresponding first connecting member 120 and the second connecting member 130 to form a gap d. That is, there is a gap d between each third connecting member 140 and the side 116 of the plurality of solar cells 110, wherein the gap d is between 0.1 mm and 3 mm. In this embodiment, the solar photovoltaic module 100A further includes an insulating layer 160 covering the third connecting member 140 to electrically insulate the third connecting member 140 from the outside world, so as to prevent the third connecting member 140 from interfering with each other. Occasionally short-circuit with the outside world.

In this embodiment, the materials of the plurality of first connecting members 120, the plurality of second connecting members 130, and the at least one third connecting member 140 may be copper tape, tinned copper tape, or a combination of other suitable metal materials. The materials of the plurality of first connecting members 120, the plurality of second connecting members 130, and the at least one third connecting member 140 may be the same material. However, the present invention is not limited to this. In other embodiments, the materials of the plurality of first connecting members 120, the plurality of second connecting members 130, and the at least one third connecting member 140 may be different from each other. In this embodiment, the plurality of first connecting members 120, the plurality of second connecting members 130, and the at least one third connecting member 140 may be integrally formed.

In this way, a plurality of solar cell sheets 110 are stacked on each other in the first direction D1, and the first connecting member 120 on one of the two adjacent solar cell sheets 110 passes through the third connecting member 140 and the third connecting member 140 located beside the side surface 116. The second connecting member 130 on the other of the two adjacent solar cells 110 is electrically connected without passing through the overlapping area 150 between the two adjacent solar cells 110, which can reduce the number of solar cells 110 on the other side. During the lamination process, the connecting member may cause the risk of rupture of the solar cell 110. In addition, since the third connecting member 140 is arranged beside the side 116, it does not affect the effective light receiving area, so that the electric energy generated by the light can be effectively transferred to another adjacent solar cell through the third connecting member 140 beside the side 116. Sheet 110, the solar photovoltaic module 100A can still maintain good photoelectric conversion efficiency.

2A is a schematic top view of a solar photovoltaic module according to another embodiment of the present invention. Fig. 2B is a schematic side view of the solar photovoltaic module according to Fig. 2A on a side adjacent to the section line II-II'. Please refer to FIGS. 2A and 2B. The solar photovoltaic module 100B in this embodiment is similar to the solar photovoltaic module 100A in FIGS. 1A and 1B. The differences between the solar photovoltaic module 100B and the solar photovoltaic module 100A are described below. Therefore, the same or similarities between the solar photovoltaic module 100B and the solar photovoltaic module 100A will not be repeated. In this embodiment, the first connecting member 120 of one of two adjacent ones of the plurality of solar cell sheets 110 is located in the overlapping area 150. That is, the first connecting member 120 on one of the two adjacent ones of the plurality of solar cell sheets 110 is sandwiched between the two adjacent ones of the plurality of solar cell sheets 110 (see FIG. 2B). Thereby, the first connecting member 120 is not exposed to the light-emitting area of the solar cell 110, which can increase the effective light-receiving area and further improve the photoelectric conversion efficiency.

3A is a schematic top view of a solar photovoltaic module according to another embodiment of the present invention. Fig. 3B is a schematic side view of the solar photovoltaic module according to Fig. 3A on a side adjacent to the section line III-III'. Please refer to FIGS. 3A and 3B. The solar photovoltaic module 100C in this embodiment is similar to the solar photovoltaic module 100A in FIGS. 1A and 1B. The differences between the solar photovoltaic module 100C and the solar photovoltaic module 100A are described below. Therefore, the same or similarities between the solar photovoltaic module 100C and the solar photovoltaic module 100A will not be repeated. In this embodiment, the second connecting member 130 of the other two adjacent ones of the plurality of solar cell sheets 110 is located in the overlapping area 150. That is, the second connecting member 130 on the other of the two adjacent ones of the plurality of solar cell sheets 110 is sandwiched between the two adjacent ones of the plurality of solar cell sheets 110 (see FIG. 3B). Thereby, compared with the solar photovoltaic module 100A, the length of the third connecting member 140 can be reduced, thereby reducing the ohmic resistance of the third connecting member 140, and improving the photoelectric conversion efficiency of the solar photovoltaic module 100C.

4A is a schematic top view of a solar photovoltaic module according to still another embodiment of the present invention. Fig. 4B is a schematic side view of the solar photovoltaic module according to Fig. 4A on a side adjacent to the section line IV-IV'. Please refer to FIGS. 4A and 4B. The solar photovoltaic module 100D in this embodiment is similar to the solar photovoltaic module 100A in FIGS. 1A and 1B. The differences between the solar photovoltaic module 100D and the solar photovoltaic module 100A are described below. Therefore, the same or similarities between the solar photovoltaic module 100D and the solar photovoltaic module 100A will not be repeated. In this embodiment, one of the two adjacent ones of the plurality of solar cell sheets 110 and the other of the two adjacent ones of the plurality of solar cell sheets 110 are connected to each other, and the method of the front surface 112 of the plurality of solar cell sheets 110 The line direction is substantially perpendicular to the first direction D1. In this embodiment, the multiple side surfaces 118 of the multiple solar cells 110 are connected to each other. In this embodiment, the multiple front surfaces 112 of the multiple solar cells 110 may be substantially on the same plane, and the multiple back faces 114 of the multiple solar cells 110 may be substantially on the same plane (see FIG. 4B). However, the present invention is not limited. In other embodiments, since the back 114 of the solar cell 110 has the second connector 130, when the solar cell 110 is connected in series, it is easy to make the normal direction of the front 112 of the solar cell 110 They are slightly different from each other, and the normal directions of the back surfaces 114 of the solar cells 110 are slightly different from each other, so that the front surfaces 112 of the solar cells 110 are not located on the same plane, and the solar cells 110 The multiple backs 114 are not on the same plane.

FIG. 5A is a schematic top view of a solar photovoltaic module according to an embodiment of the invention. Fig. 5B is a schematic side view of the solar photovoltaic module according to Fig. 5A on a side adjacent to the section line V-V'. Please refer to FIGS. 5A and 5B. The solar photovoltaic module 100E in this embodiment is similar to the solar photovoltaic module 100A in FIGS. 1A and 1B. The differences between the solar photovoltaic module 100E and the solar photovoltaic module 100A are described below. Therefore, the same or similarities between the solar photovoltaic module 100E and the solar photovoltaic module 100D will not be repeated. In this embodiment, the side surfaces 118 of a part of the plurality of solar cells 110 are connected to each other, and the front 112 of one of the two adjacent ones of the other part of the plurality of solar cells 110 is connected to the plurality of solar cells 110. The back side 114 of the other of the two adjacent ones is partially overlapped to form an overlap area 150. For example, the side surface 118 of the solar cell 110-1 and the side surface 118 of the solar cell 110-2 are connected to each other. On the other hand, the front 112 of the solar cell 110-2 and the back 114 of the solar cell 110-3 partially overlap to form an overlap area 150. The stacking relationship between the plurality of solar cells 110 of the present invention is not limited to the stacking relationship of the solar cell module 100E. Those with ordinary knowledge in the field can adjust the two adjacent solar cells 110 according to actual conditions and needs. If the side surfaces 118 are connected, or the two adjacent solar cell sheets 110 are overlapped with the front surface 112 of one and the back surface 114 of the other, the present invention is not limited to this.

Fig. 6 is a schematic top view of a solar cell according to an embodiment of the present invention. Referring to FIG. 6, in this embodiment, the front surface 112 of each solar cell 110 includes a plurality of first finger electrode lines 174 and first bus bars 172, and the first bus bars 172 extend in the second direction D2 , The plurality of first finger-shaped electrode lines 174 are electrically connected to the first bus bar 172, and the orthographic projection of the plurality of first finger-shaped electrode lines 174 extends in the first direction D1, and the first connector 120 is connected to the solar cell sheet. The first bus bar 172 of 110 is electrically connected. In this embodiment, each solar cell 110 may include more than one first bus bar 172, and the orthographic projections of the plurality of first bus bars 172 are arranged along the first direction D1. In this embodiment, the first connecting member 120 covers the first bus bar 172. However, the present invention is not limited to this. In other embodiments, the solar cell 110 may not include the first bus bar 172, and the plurality of first finger electrode wires 174 directly contact the first connector 120 and are electrically connected. The solar cell 110 in this embodiment is one of the multiple solar cell 110 in any of the above embodiments. That is, in the embodiments of FIGS. 1A to 5B, the first finger electrode line 174 and the at least one first bus bar 172 on the solar cell 110 of FIG. 6 are omitted.

In the embodiment of FIGS. 1A to 5B, the back 114 of each solar cell 110 may further include a plurality of second finger-shaped electrode lines (not shown) and second bus bars (not shown), and the second The bus bar extends in the third direction (the second direction D2), the plurality of second finger electrode lines are electrically connected to the second bus bar, and the orthographic projection of the plurality of second finger electrode lines is in the first direction D1 Extending, the second connecting member 130 is electrically connected to the second bus bar of the solar cell 110. In other embodiments, the solar cell 110 may not include the second bus bar, and the plurality of second finger-shaped electrode lines are in direct contact with and electrically connected to the second connector 130.

To sum up, in the solar photovoltaic module of the embodiment of the present invention, since there is a third connector on the side of the solar cell, the first connector on one of the adjacent solar cells can pass through the third connector. The connecting piece is connected to the second connecting piece on the other of the adjacent solar cells, and the connecting piece does not need to pass through the overlapping area between two adjacent solar cells, which can reduce the lamination process of multiple solar cells. Among them, the connecting parts cause the risk of solar cell rupture. In addition, the arrangement of the third connecting member beside the side surface does not affect the effective light receiving area, so that the electric energy generated by the light receiving can be effectively transferred to another adjacent solar cell through the third connecting member located on the side surface. Compared with other types of laminated solar photovoltaic modules, the first bus bars are all located on the front side of the solar cell near the long side, resulting in a higher ohmic resistance of the first finger-shaped electrode line, and the embodiment of the present invention In the solar cell, because the first bus bar can be located in the middle of the first finger-shaped electrode line, the ohmic resistance of the first finger-shaped electrode line can be effectively reduced, so that the solar photovoltaic module of the present invention can improve the photoelectric conversion efficiency. As a hybrid type of the foregoing embodiment, most of the adjacent solar cells are arranged in a stacked arrangement in the middle, and a few solar cells are arranged on both sides in a manner of being closely adjacent to each other without gaps, if When the solar cells in the laminated layout area need to be replaced by heavy labor due to defects, this kind of interleaved arrangement of partial laminated and partially zero-gap solar cells will reduce the impact of heavy labor steps on the remaining normal solar cells.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be subject to those defined by the attached patent application scope.

100A, 100B, 100C, 100D, 100E: electronic device 110, 110-1, 110-2, 110-3: solar cells 112: positive 114: back 116, 118: side 120: The first connector 130: second connector 140: third connector 150, 150-1, 150-2: overlapping area 160: insulating layer 172: First Bus 174: The first finger electrode line D1: First direction D2: second direction d: gap I-I’, II-II’, III-III’, IV-IV’, V-V’: Sectional line T1, T2: distance

FIG. 1A is a schematic top view of a solar photovoltaic module according to an embodiment of the present invention. Fig. 1B is a schematic side view of the solar photovoltaic module according to Fig. 1A on a side adjacent to the section line I-I'. 2A is a schematic top view of a solar photovoltaic module according to another embodiment of the present invention. Fig. 2B is a schematic side view of the solar photovoltaic module according to Fig. 2A on a side adjacent to the section line II-II'. 3A is a schematic top view of a solar photovoltaic module according to another embodiment of the present invention. Fig. 3B is a schematic side view of the solar photovoltaic module according to Fig. 3A on a side adjacent to the section line III-III'. 4A is a schematic top view of a solar photovoltaic module according to still another embodiment of the present invention. Fig. 4B is a schematic side view of the solar photovoltaic module according to Fig. 4A on a side adjacent to the section line IV-IV'. FIG. 5A is a schematic top view of a solar photovoltaic module according to an embodiment of the invention. Fig. 5B is a schematic side view of the solar photovoltaic module according to Fig. 5A on a side adjacent to the section line V-V'. Fig. 6 is a schematic top view of a solar cell according to an embodiment of the present invention.

100A: Solar photovoltaic module

110, 110-1, 110-2, 110-3: solar cells

116, 118: side

120: The first connector

130: second connector

140: third connector

150, 150-1, 150-2: overlapping area

160: insulating layer

D1: First direction

D2: second direction

d: gap

I-I’: Sectional line

T1, T2: distance

Claims (14)

A solar photovoltaic module includes: a plurality of solar cells arranged along a first direction; a plurality of first connecting members are respectively arranged on the front of the solar cells, wherein the first connecting members are different from the Extend in a second direction of the first direction; a plurality of second connecting members are respectively arranged on the back of the solar cells, wherein the second connecting members extend in a third direction different from the first direction; And at least one third connecting member, located beside the side surface of the solar cells, extending along the side surface, and connecting one end of the first connecting member on one of the two adjacent solar cells and the solar cells One end of the second connecting member on the other of the two adjacent ones of the sheets, wherein the one of the two adjacent ones of the solar cell sheets and the other of the two adjacent ones of the solar cell sheets Touch each other. According to the solar photovoltaic module described in claim 1, wherein the front surface of each of the solar cells includes a plurality of first finger electrode lines and at least one first bus bar, the at least one first The bus bars extend in the second direction, the first finger electrode lines are electrically connected to the at least one first bus bar, and the orthographic projections of the first finger electrode lines extend in the first direction, Each of the first connecting members is electrically connected to the at least one first bus bar of each of the solar cells. The solar photovoltaic module described in claim 1, wherein the solar cells are arranged in an overlapping manner along the first direction, and the front surface of the one of the two adjacent ones of the solar cells and the solar cells The back surface of the other of the two adjacent ones of the battery sheet is partially overlapped to form an overlap area. The solar photovoltaic module according to item 3 of the scope of patent application, wherein the front surface of the one of the two adjacent ones of the solar cell sheets and the other of the two adjacent ones of the solar cell sheets The back surface is in direct contact with the overlap area. The solar photovoltaic module described in item 3 of the scope of patent application, wherein the first connecting member of the one of the two adjacent ones of the solar cell sheets is located in the overlapping area. The solar photovoltaic module according to item 5 of the scope of patent application, wherein the first connecting member on the one of the two adjacent ones of the solar cell sheets is sandwiched between the two adjacent ones of the solar cell sheets Between those. The solar photovoltaic module according to item 3 of the scope of patent application, wherein the second connecting member of the other of the two adjacent ones of the solar cell sheets is located in the overlapping area. The solar photovoltaic module according to item 7 of the scope of patent application, wherein the second connecting member on the other of the two adjacent ones of the solar cells is sandwiched between the two phases of the solar cells Between neighbors. For the solar photovoltaic module described in item 1 of the scope of patent application, the at least one third connecting member is a plurality of third connecting members, and the third connecting members are respectively connected to the two adjacent ones of the solar cells The two ends of the first connecting piece on the one, and Two ends of the second connecting member connected to the other of the two adjacent ones of the solar cell sheets to form a closed circuit. Such as the solar photovoltaic module described in item 9 of the scope of patent application, the orthographic projection of the closed circuit is a square font According to the solar photovoltaic module described in item 1 of the scope of patent application, there is a gap between the at least one third connecting member and the side surface of the solar cells. For the solar photovoltaic module described in item 4 of the scope of patent application, the solar cells are arranged obliquely. According to the solar photovoltaic module described in claim 1, wherein the two adjacent ones of the solar cells that are in contact with each other pass through the first connecting members, the second connecting members, and the at least one The third connecting member is electrically connected. The solar photovoltaic module described in item 1 of the scope of patent application further includes an insulating layer covering the at least one third connecting member.

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