TWM482851U - Solar electricity structure - Google Patents

Description

Solar cell structure

This creation relates to a solar cell, and in particular to a solar cell structure.

With the development and application of various energy sources, the green energy industry, which focuses on protecting the earth, is also booming. Among them, solar energy has become an energy source that is highly valued by the industry and academia. Solar power is the conversion of sunlight into electricity. Sunlight can be directly converted into electricity using solar photovoltaics, or indirectly using concentrating solar thermal power, after which electricity is stored in the battery. Most of the current techniques use pn junction semiconductors to absorb light energy to generate free electrons and holes. Under the built-in electric field near the pn junction semiconductor junction, free electrons are moved to the n-type semiconductor, and free holes are directed to the p-type semiconductor. The movement, which in turn generates a current, is ultimately drawn through the electrodes to form electrical energy for use or storage.

The purpose of this creation is to provide a solar cell structure that can enhance the electrode collecting current effect and reduce the amount of silver gel used.

The present invention provides a solar cell structure comprising a substrate, a bus bar electrode and a strip finger electrode. The substrate described above has a first surface. The bus bar electrodes described above are disposed on the first surface and disposed along the first direction. The above-mentioned strip finger electrodes are disposed on the first surface, and Arranging a plurality of rows of electrodes along a second direction, each of the finger electrodes having a first end and a second end, and the second ends of the plurality of finger electrodes in the odd rows of the rows of electrodes and the even rows The first ends of the strip electrodes are coupled to one of the bus bar electrodes, and the first ends of the strip fingers in the odd rows of the row electrodes and the strips in the even rows The second end of the finger electrode has a width W. The Nth odd finger electrode of each of the row electrodes is coupled to the Nth even number of finger electrodes, and N is a positive integer greater than or equal to 1.

The present invention provides a solar cell structure including a substrate and a bus bar. Pole and strip finger electrodes. The substrate described above has a first surface. The bus bar electrodes described above are disposed on the first surface and disposed along the first direction. The strip-shaped electrode system is disposed on the first surface, and is disposed in the second direction as a plurality of rows of electrodes, each of the finger electrodes having a first end and a second end, and the odd-numbered rows of the row of electrodes The second ends of the finger electrodes are coupled to the first ends of the finger electrodes of the even rows to one of the bus bar electrodes, and the bar fingers of the odd rows of the row electrodes The first end of the electrode and the second end of the strip of fingers in the even row have a width W. The Nth odd-numbered finger electrode of the first even-numbered row of electrodes to the first-numbered odd-numbered row of electrodes is coupled to the Nth even-numbered finger electrodes, and N is a positive integer greater than or equal to 1.

In order to make the above purposes, features and advantages of this creation more obvious and easy to understand, the following special The preferred embodiments are described in detail below in conjunction with the drawings. However, the following preferred embodiments and drawings are for reference and description only, and are not intended to limit the present invention.

100‧‧‧Solar cell structure

102‧‧‧Substrate

104‧‧‧ Bus bar electrode

106‧‧‧ finger electrode

106a‧‧‧ first end

106b‧‧‧ second end

108‧‧‧Exhaust electrode

D‧‧‧Width

W‧‧‧Width

Figure 1 is a view of the solar cell structure in the preferred embodiment of the present invention. intention.

Please refer to FIG. 1 , which is a solar cell in the preferred embodiment of the present invention. The structure is shown above. In FIG. 1, the solar cell structure 100 includes a substrate 102, a bus bar electrode 104, and a finger electrode 106.

The substrate 102 is a substrate of a solar cell structure, as is conventional in the art. The knowledgeable person can easily know that the substrate 102 can be, for example, an n-type semiconductor layer or a p-type semiconductor layer of a p-n junction semiconductor, and the p-n junction semiconductor system is an active region for converting light energy into electrical energy.

A plurality of bus bar electrodes 104 are disposed on the first surface and along the first direction Configure it. The bus bar electrode 104 is electrically connected to the other substrate 102, and the bus bar electrode 104 may be, for example, one or two or more, the number of which is determined according to the design requirement, and is not in the first embodiment. limit. Wherein, the width D of the bus bar electrode 104 is between 0.5 mm and 2 mm, for example 1.5 mm.

A plurality of finger electrodes 106 are disposed on the first surface and are disposed along the second direction A plurality of rows of electrodes 108 are formed. Each of the row electrodes 108 has a plurality of finger electrodes 106 therein, and each of the finger electrodes 106 has a first end 106a and a second end 106b. In the present creation, the second end 106b of the strip finger electrode 106 in the odd row electrode 108 is coupled to the same bus bar electrode 104 of the strip finger electrode 106 in the even row electrode 108. . In other words, the second end 106b of the strip finger electrode 106 in the first row of electrodes 108 is coupled to the same busbar electrode 104 of the strip finger electrode 106 in the second row of row electrodes 108. , the following can be deduced.

In a preferred embodiment of the present invention, the strips in the odd rows of the rows of electrodes 108 The first end 106a of the electrode 106 and the second end 106b of the strip finger electrode 106 in the even row have a width W and a width W of between 0.05 mm and 2 mm, such as 1 mm.

Please continue to refer to FIG. 1 , the Nth odd number of finger electrodes in the discharge electrode 108 The 106 series is coupled to the Nth even number of finger electrodes 106, wherein N is a positive integer greater than or equal to 1. In other words, the first strip finger electrode 106 of the row electrode 108 is connected to the second strip finger electrode 106, and the third strip finger electrode 106 is connected to the fourth strip finger electrode 106, analogy.

As is known in the art, it is easy to know that for the circuit loop The first end 106a of the strip finger electrode 106 of the leftmost row of electrodes 108 of the substrate 102 and the second end 106b of the strip finger electrode 106 of the rightmost row of electrodes 108 can be designed to be all connected. That is, the first end 106a of the strip finger electrode 106 of the leftmost row electrode 108 is connected by one power line, and the second end 106b of the strip finger electrode 106 of the rightmost row electrode 108 is connected by another power line.

In the present creation, the portion of the leftmost row of electrodes 108 is the first of the finger electrodes 106 The length of one end 106a can be designed to be shorter than the length of the second end 106b of a portion of the finger electrodes 106 of the adjacent row of electrodes 108. Similarly, the length of the second end 106b of the portion of the finger electrodes 106 of the rightmost row of electrodes 108 can be designed to be shorter than the length of the first end 106a of the portion of the finger electrodes 106 of the adjacent row of electrodes 108.

In the present creation, the first direction and the second direction are orthogonal, that is, the angle between the first direction and the second direction is approximately equal to 90 degrees.

In the present creation, the strip finger electrodes 106 and the bus bar electrodes 104 may be formed on the substrate 102, for example, by screen printing.

In summary, the solar cell structure of the present invention can achieve the effect of increasing the current collected by the electrode and reducing the amount of silver glue used.

The above is intended to be illustrative only and not limiting. Any equivalent modification or change without departing from the spirit and scope of this creation shall be included in the attached application. In the range of interest.

100‧‧‧Solar cell structure

102‧‧‧Substrate

104‧‧‧ Bus bar electrode

106‧‧‧ finger electrode

106a‧‧‧ first end

106b‧‧‧ second end

108‧‧‧Exhaust electrode

D‧‧‧Width

W‧‧‧Width

Claims (8)

A solar cell structure comprising: a substrate having a first surface; a plurality of bus bar electrodes disposed on the first surface and disposed along a first direction; and a plurality of finger electrodes disposed on the a first surface, and disposed along a second direction as a plurality of rows of electrodes, each of the plurality of finger electrodes having a first end and a second end, and the plurality of strips in the odd rows of the rows of electrodes The second end of the electrode and the first end of the finger electrodes in the even row are coupled to one of the bus bar electrodes, and the strip fingers in the odd rows of the row electrodes The first end of the electrode and the second end of the strip electrode in the even row have a width W; wherein the Nth odd finger electrode of each of the rows of electrodes is coupled to the Nth An even number of finger electrodes, and N is a positive integer greater than or equal to 1. The solar cell structure of claim 1, wherein the first direction and the second direction are orthogonal. The solar cell structure of claim 1, wherein a portion of the first odd rows of the rows of electrodes has a length of the plurality of finger electrodes that is greater than a length of the first even row of the row of electrodes The length of any of the finger electrodes is short. The solar cell structure of claim 1, wherein a portion of the last even rows of the rows of electrodes has a length of the plurality of finger electrodes that is greater than a length of the last odd and even rows of the row of electrodes The length of any of the finger electrodes is short. A solar cell structure comprising: a substrate having a first surface; a plurality of bus bar electrodes disposed on the first surface and disposed along a first direction; And a plurality of finger electrodes are disposed on the first surface, and are disposed in a second direction as a plurality of rows of electrodes, each of the plurality of finger electrodes having a first end and a second end, and the The second end of the strip of finger electrodes in the odd row of the electrodes and the first end of the strip of finger electrodes in the even row are coupled to one of the bus bar electrodes, and the row of electrodes The first end of the strip of finger electrodes in the odd row and the second end of the strip of finger electrodes in the even row have a width W; wherein the first even row of electrodes to the first of the last The Nth odd-numbered finger electrodes of the odd-numbered rows of electrodes are coupled to the N-th even-numbered finger electrodes, and N is a positive integer greater than or equal to 1. The solar cell structure of claim 5, wherein the first direction and the second direction are orthogonal. The solar cell structure of claim 5, wherein a portion of the first odd rows of the rows of electrodes has a length of the plurality of finger electrodes that is greater than a length of the first even row of the row of electrodes The length of any of the finger electrodes is short. The solar cell structure of claim 5, wherein a portion of the last even rows of the rows of electrodes has a length of the plurality of finger electrodes that is greater than a length of the last odd and even rows of the row of electrodes The length of any of the finger electrodes is short.