CN219144192U

CN219144192U - Photovoltaic cell and photovoltaic device with same

Info

Publication number: CN219144192U
Application number: CN202223448998.0U
Authority: CN
Inventors: 郭新峰; 张达奇; 吴坚; 蒋方丹
Original assignee: Yancheng Artes Sunshine Energy Technology Co ltd; Jiaxing Canadian Solar Technology Research Institute
Current assignee: Yancheng Artes Sunshine Energy Technology Co ltd; Jiaxing Canadian Solar Technology Research Institute
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-06-06
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a photovoltaic cell and photovoltaic equipment with the same, wherein the photovoltaic cell comprises a cell piece and a main grid line, and the main grid line comprises: a main gate connecting wire and a main gate pad part, wherein the main gate connecting wire is arranged on the surface of the battery piece, and the main gate pad part is arranged on the main gate connecting wire; the height of the main gate connecting wire is A, the height of the main gate bonding pad part is B, and the height A and the height B meet the relation: a is less than B. Therefore, the height of the main grid connecting wire is smaller than that of the main grid bonding pad part, so that the production material of the main grid connecting wire is reduced, the production cost of the photovoltaic cell is reduced, and the main grid bonding pad part has more reliable structural strength due to the fact that the dare bet of the main grid bonding pad part is larger than that of the main grid connecting wire, so that the photovoltaic cell has higher service performance.

Description

Photovoltaic cell and photovoltaic device with same

Technical Field

The utility model relates to the technical field, in particular to a photovoltaic cell and photovoltaic equipment with the photovoltaic cell.

Background

In the related art, the consumption of the grid line in the production process of the photovoltaic cell is critical to the cost of the photovoltaic cell. In the prior art, in order to ensure the setting reliability of the grid line, consumable materials are required to be added, so that the cost is increased, and the service performance of the photovoltaic cell is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the utility model is to propose a photovoltaic cell which is inexpensive to produce and has high performance characteristics

Another object of the utility model is to propose a photovoltaic device in which the photovoltaic cell as indicated above is provided.

A photovoltaic cell according to an embodiment of the present utility model comprises: battery piece and main grid line, main grid line includes: the main grid connecting wire and the main grid bonding pad part are arranged on the surface of the battery piece, and the main grid bonding pad part is arranged on the main grid connecting wire; the height of the main gate connecting line is A, the height of the main gate pad part is B, and the height A and the height B satisfy the relation: a is less than B.

According to the photovoltaic cell provided by the embodiment of the utility model, the height of the main grid connecting wire is smaller than that of the main grid bonding wire, so that the production material of the main grid connecting wire is reduced, the production cost of the photovoltaic cell is reduced, and the main grid bonding wire has more reliable structural strength due to the fact that the dare bet of the main grid bonding wire is larger than that of the main grid connecting wire, so that the photovoltaic cell has higher service performance.

In some embodiments, a satisfies the relationship: a is more than or equal to 8 mu m and less than or equal to 12 mu m and less than B.

In some embodiments, B satisfies the relationship: b is more than or equal to 15 mu m and less than or equal to 22 mu m.

In some embodiments, further comprising: the auxiliary grid line is connected with the main grid connecting line, the height of the auxiliary grid line is C, and C and A meet the relation: c=a.

In some embodiments, the main gate bond line is a low film thickness screen printed bond line and the main gate pad portion is a high film thickness screen printed pad spot.

In some embodiments, the main gate pad portion is configured as a main gate pad spot or a main gate pad block.

In some embodiments, the main gate pad part is a plurality of main gate pad parts, and the plurality of main gate pad parts are arranged at intervals on the main gate connection line.

In some embodiments, the number of the main gate connection lines is plural, the plural main gate connection lines are arranged on the surface of the battery piece at intervals, and each main gate connection line is provided with the main gate pad portion.

In some embodiments, the main grid lines are arranged on two side surfaces of the battery piece.

The photovoltaic device according to the embodiment of the utility model comprises: a photovoltaic cell as described above.

According to the photovoltaic device provided by the embodiment of the utility model, the photovoltaic cell is arranged in the photovoltaic device, the height of the main grid connecting wire is smaller than that of the main grid bonding pad part, so that the production material of the main grid connecting wire is reduced, the production cost of the photovoltaic cell is reduced, and the main grid bonding pad part has more reliable structural strength due to the fact that the dare bet of the main grid bonding pad part is larger than that of the main grid connecting wire, so that the photovoltaic cell has higher service performance.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a photovoltaic cell according to an embodiment of the present utility model.

Reference numerals:

the photovoltaic cell 10 is formed from a photovoltaic cell,

the battery sheet 100 is provided with a plurality of battery cells,

the main gate line 200, the main gate connection line 210, the main gate pad part 220,

and a sub-gate line 300.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

A photovoltaic cell 10 according to an embodiment of the present utility model is described below with reference to fig. 1, comprising: a battery cell 100 and a main grid line 200.

Specifically, the main gate line 200 includes: a main gate connection line 210 and a main gate pad part 220, the main gate connection line 210 being disposed on the surface of the battery cell 100, the main gate pad part 220 being disposed on the main gate connection line 210; wherein the height of the main gate connection line 210 is a, the height of the main gate pad portion 220 is B, and the height a and the height B satisfy the relation: a is less than B.

It will be appreciated that a primary grid line 200 is provided on the photovoltaic cell 10, the primary grid line 200 being adapted to collect current from the cell surface to provide for performance of the photovoltaic cell 10. The main grid line 200 includes a main grid connection line 210 and a main grid pad portion 220, the main grid connection line 210 is suitable for being disposed on the surface of the battery piece 100 to collect the photovoltaic cells 10 on the surface of the battery piece 100, and the main grid connection line 210 is provided with the main grid pad portion 220, and the main grid pad portion 220 is suitable for providing a position for the subsequent assembly and use of the photovoltaic cells 10, so that the use performance of the photovoltaic cells 10 is more reliable.

Moreover, since the height of the main gate connection line 210 is smaller than the height of the main gate pad portion 220, the main gate pad portion 220 has more reliable structural strength, so as to improve the structural stability of the main gate line 200, so as to improve the service performance of the photovoltaic cell 10, and the height of the main gate connection line 210 is smaller than the height of the main gate pad portion 220, so that the use of the solder material of the main gate connection line 210 in the construction process is reduced, and the production cost of the photovoltaic cell 10 is reduced.

According to the photovoltaic cell 10 of the embodiment of the present utility model, the height of the main gate connection line 210 is smaller than the height of the main gate pad portion 220, so that the production material of the main gate connection line 210 is reduced, the production cost of the photovoltaic cell 10 is reduced, and the main gate pad portion 220 has more reliable structural strength due to the fact that the dare bet of the main gate pad portion 220 is larger than the height of the main gate connection line 210, so that the photovoltaic cell 10 has higher service performance.

In some specific embodiments, a satisfies the relationship: a is more than or equal to 8 mu m and less than or equal to 12 mu m and less than B. In this way, the height of the main gate connection line 210 is set between 8 μm and 12 μm, so that the production cost of the main gate connection line 210 is reduced, and the main gate connection line has a certain structural strength, so as to improve the service performance of the photovoltaic cell 10. Meanwhile, the height of the main gate pad part 220 is set at 12 μm to allow the structural arrangement of the main gate pad part 220 to be more reliable.

In some specific embodiments, B satisfies the relationship: b is more than or equal to 15 mu m and less than or equal to 22 mu m. Thereby, the height of the main gate pad part 220 is set between 15 μm and 22 μm to allow the main gate pad part 220 to have more reliable structural performance, thereby improving the use performance of the photovoltaic cell 10.

In some embodiments, the photovoltaic cell 10 further comprises: the auxiliary grid line 300, the auxiliary grid line 300 is connected with the main grid connecting line 210, the height of the auxiliary grid line 300 is C, and the C and A satisfy the relation: c=a. It can be appreciated that the auxiliary grid line 300 is suitable for improving the current collection effect of the main grid line 200, so as to improve the service performance of the photovoltaic cell 10, and the height of the auxiliary grid line 300 is the same as the height of the main grid connection line, so that printing can be facilitated, and the production efficiency of the photovoltaic cell 10 can be improved.

In some embodiments, the main gate bond wires 210 are low film thickness screen printed bond wires and the main gate pad portions 220 are high film thickness screen printed pad dots. In this way, by setting the main grid connection line 210 as a low film thickness screen printing connection line and setting the main grid pad portion 220 as a high film thickness screen printing pad point, production printing of the photovoltaic cell 10 can be facilitated, thereby allowing production efficiency of the photovoltaic cell 10 to be improved.

In some embodiments, the main gate pad part 220 is configured as a main gate pad spot or a main gate pad block. Thus, the main gate pad or the main gate pad block can be selected for use according to the type of the photovoltaic cell 10 to improve the applicability.

In some embodiments, the main gate pad part 220 is a plurality, and the plurality of main gate pad parts 220 are spaced apart on the main gate connection line 210. In this way, by providing the main gate pad portion 220 in plural, the provision and use of the main gate pad portion 220 can be facilitated, and the convenience of use of the photovoltaic cell 10 can be improved.

In some embodiments, the plurality of main gate connection lines 210 are provided, and the plurality of main gate connection lines 210 are disposed at intervals on the surface of the battery sheet 100, and the main gate pad part 220 is disposed on each main gate connection line 210. Therefore, the plurality of main grid connection lines 210 are arranged on the surface of the battery piece 100 at intervals, and each main grid connection line 210 is provided with the main grid pad part 220, so that the assembly connection of the photovoltaic cell 10 can be facilitated, and the service performance of the photovoltaic cell 10 is improved.

In some embodiments, both side surfaces of the battery cell 100 are provided with the main grid lines 200. In this way, the current can be collected at both sides of the photovoltaic cell 10 to improve the performance of the photovoltaic cell 10.

The photovoltaic device according to the embodiment of the utility model comprises: a photovoltaic cell 10 as above. Thus, since the photovoltaic cell 10 as shown above is provided in the photovoltaic device, the production material of the main gate link line 210 is reduced by making the height of the main gate link line 210 smaller than the height of the main gate link line 220, the production cost of the photovoltaic cell 10 is reduced, and since the main gate link line 220 has a higher bet than the height of the main gate link line 210, the main gate link line 220 has a more reliable structural strength, so that the photovoltaic cell 10 has a higher performance.

Other constructions and operations of photovoltaic devices according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A photovoltaic cell, comprising:

a battery sheet (100);

a main gate line (200), the main gate line (200) comprising: a main gate connection line (210) and a main gate pad portion (220), wherein the main gate connection line (210) is arranged on the surface of the battery piece (100), and the main gate pad portion (220) is arranged on the main gate connection line (210);

wherein the height of the main gate connection line (210) is a, the height of the main gate pad portion (220) is B, and the height a and the height B satisfy the relation: a is less than B.

2. The photovoltaic cell of claim 1, wherein a satisfies the relationship: a is more than or equal to 8 mu m and less than or equal to 12 mu m and less than B.

3. The photovoltaic cell of claim 2, wherein B satisfies the relationship: b is more than or equal to 15 mu m and less than or equal to 22 mu m.

4. The photovoltaic cell of claim 2, further comprising: the auxiliary grid line (300), the auxiliary grid line (300) is connected with the main grid connecting line (210), the height of the auxiliary grid line (300) is C, and the C and the A satisfy the relation: c=a.

5. The photovoltaic cell of claim 1, wherein the primary grid connection lines (210) are low film thickness screen printed connection lines and the primary grid pad portions (220) are high film thickness screen printed pad dots.

6. The photovoltaic cell of claim 1, wherein the primary gate pad portion (220) is configured as a primary gate pad spot or a primary gate pad block.

7. The photovoltaic cell of claim 1, wherein the number of main gate pad portions (220) is plural, and the plurality of main gate pad portions (220) are arranged at intervals on the main gate connection line (210).

8. The photovoltaic cell of claim 1, wherein the number of main gate connection lines (210) is plural, the plurality of main gate connection lines (210) are disposed at intervals on the surface of the cell sheet (100), and the main gate pad portion (220) is disposed on each main gate connection line (210).

9. The photovoltaic cell of claim 1, wherein both side surfaces of the cell sheet (100) are provided with the main grid lines (200).

10. A photovoltaic device, comprising: the photovoltaic cell of any one of claims 1-9.