CN213242563U

CN213242563U - Battery piece

Info

Publication number: CN213242563U
Application number: CN202022026783.4U
Authority: CN
Inventors: 从海泉; 马敏杰; 王韫清; 马擎天; 王鹏
Original assignee: Huansheng Photovoltaic Jiangsu Co Ltd
Current assignee: Huansheng Photovoltaic Jiangsu Co Ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-05-18
Anticipated expiration: 2030-09-16

Abstract

The utility model discloses a battery piece, one side of which is provided with one or more spaced PAD points, the battery piece is also provided with a plurality of spaced fine grids and auxiliary main grids corresponding to the number of the PAD points, the PAD points are arranged on one side of the length direction of the fine grids, each auxiliary main grid is connected with all the fine grids, and one end of each auxiliary main grid is connected with a corresponding PAD point; with the arrangement, when the current is transmitted, the current collected by the fine grid is transmitted to the auxiliary main grid and then transmitted to the corresponding PAD point through the auxiliary main grid, so that the transmission path of the current is greatly shortened, the transmission loss of the current is reduced, and the conversion efficiency of the battery piece is greatly improved; and because of so to if will transmit PAD point the same many electric currents, compare the traditional battery piece of the same size, the utility model discloses the thin bars quantity that the battery piece needs will be a lot of less, thereby the utility model discloses the manufacturing cost greatly reduced of battery piece.

Description

Battery piece

Technical Field

The utility model relates to a photovoltaic product field especially relates to a battery piece.

Background

The cell is a basic component unit of a photovoltaic power generation product, and the design of the cell not only affects the cost of the photovoltaic power generation product, but also affects the power generation efficiency.

The conventional battery piece, especially the laminated battery piece, is generally provided with a main grid a on one side, and then provided with a plurality of fine grids B (as shown in fig. 1) vertically connected to the main grid, wherein a plurality of PAD points C are arranged on the main grid at intervals; the current collected by the fine grid is collected toward the main grid a in a single direction, and then transmitted to each PAD point C through the main grid (as shown by the arrow in fig. 2). Therefore, the current transmission path is too long, so that the series resistance of the battery piece is high, the current transmission loss is large, and the conversion efficiency of the battery piece is low; and to guarantee the conversion efficiency of the cell, the density of the fine grid can only be increased, that is, the number of the fine grids is increased on the cell with the same area, and the main grid and the fine grid are both formed by printing silver paste, so that the use amount of the silver paste is increased by increasing the density of the fine grid, and the production cost is high. Particularly, after a large-size silicon wafer is introduced, the above-mentioned disadvantages become more apparent as the area of the cell becomes larger.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned shortcoming, provide a battery piece, its conversion efficiency is high, low in production cost moreover.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a battery piece, its one side is provided with one or more looks spaced PAD point, still be provided with many looks spaced thin bars on the battery piece, with the vice main grid that PAD point quantity corresponds, the PAD point sets up in one side of thin grid length direction, each vice main grid all is connected with all thin bars, and each vice main grid one end is connected with a corresponding PAD point.

When the PAD points are arranged in a plurality, the arrangement direction of the PAD points is the same as the length extension direction of the fine grid.

When a plurality of PAD points are arranged, a plurality of auxiliary main grids are arranged in parallel.

And the distances between two adjacent auxiliary main grids are equal.

The fine grids are arranged in parallel.

And the distance between two adjacent fine grids is equal.

The fine grids are all arranged in a straight line shape.

The auxiliary main grids are also arranged linearly, and each auxiliary main grid is perpendicular to each fine grid.

The sectional area of the auxiliary main grid is larger than that of the fine grid.

The length of the fine grid between any two adjacent auxiliary main grids is shorter than that of the auxiliary main grids.

The utility model has the advantages that:

1. because the battery piece of the utility model adopts the above design, the current collected by each thin grid is collected to the adjacent auxiliary main grid, and the auxiliary main grid transmits the current to the connected PAD point, thus greatly shortening the transmission path of the current, reducing the series resistance of the battery piece, further reducing the transmission loss of the current and greatly improving the conversion efficiency of the battery piece;

2. because the utility model discloses the current transmission loss of battery piece is low to if will transmit PAD point as much electric current, compare the traditional battery piece of the same size, the utility model discloses the thin bars quantity that the battery piece needs is a lot less, that is to say promptly, the utility model discloses the battery piece can reduce the density of thin bars, can be in order to reduce the quantity of thin bars, moreover the utility model discloses the battery piece still need not to set up the main grid, thereby the utility model discloses the manufacturing cost greatly reduced of battery piece.

Drawings

FIG. 1 is a schematic structural diagram of a conventional battery cell;

FIG. 2 is a schematic view illustrating a current transmission direction of a conventional battery plate;

fig. 3 is a schematic structural view of the battery plate of the present invention;

fig. 4 is a schematic diagram of the current transmission direction of the battery plate of the present invention.

Detailed Description

The following description will be made in detail with reference to the accompanying drawings.

As shown in fig. 3, the utility model discloses battery piece one side is provided with one or more looks spaced PAD point 1, still be provided with many looks spaced thin bars 2, with the vice main grid 3 that PAD point 1 quantity corresponds, PAD point 1 sets up in one side of thin grid 2 length direction, each vice main grid 3 all is connected with all

thin bars

2, and 3 one end of each vice main grid are connected with a PAD point 1 that corresponds.

The utility model discloses the battery piece so sets up for when current transmission, the electric current that thin bars 2 collected can transmit vice main bars 3, transmits corresponding PAD point 1 (as shown in figure 4) via vice main bars 3 again. Specifically, the current collected by the fine gate 2 between two adjacent sub-main gates 3 is transmitted to the two adjacent sub-main gates 3, and each sub-main gate 3 transmits the current to the PAD point 1 connected thereto (as indicated by the arrow in fig. 4). The current is transmitted in such a way, compared with the traditional battery piece, the current transmission path of the battery piece is greatly shortened, so that the series resistance of the battery piece is reduced, the current transmission loss is reduced, and the conversion efficiency of the battery piece is greatly improved; and because the utility model discloses the current transmission loss of battery piece is low to if will transmit PAD point 1 same many electric currents, compare the traditional battery piece of same size, the utility model discloses the electric current that the battery piece needs thin bars 2 to collect just can be a little, that is to say promptly, the utility model discloses the battery piece can reduce the density of thin bars 2, can be in order to reduce the quantity of thin bars 2, moreover the utility model discloses the battery piece still need not to set up traditional main bars, thereby the utility model discloses the manufacturing cost greatly reduced of battery piece.

Preferably, the length of the fine grid 2 between any two adjacent auxiliary main grids 3 is shorter than that of the auxiliary main grid 3. Further, the length of the fine grid 2 between any two adjacent main grids 3 is shorter than that of any two adjacent main grids, and further, the length of the fine grid 2 between any two adjacent main grids 3 is shorter than that of any main grid 3. With such an arrangement, the line resistance can be reduced, thereby further reducing the current transmission loss.

In this embodiment, when the PAD points 1 are provided in plural, the arrangement direction of the PAD points 1 is the same as the length extending direction of the fine grid 2. That is to say, the extending direction of each fine grid 2 is the same as the arrangement direction of the plurality of PAD points 1, and the arrangement is such that the distance between each PAD point 1 and the nearest fine grid 2 is equal, thereby being beneficial to the balance of the current transmitted to each PAD point 1 and further being beneficial to improving the conversion efficiency of the battery piece.

Preferably, when a plurality of PAD points 1 are provided, correspondingly, a plurality of auxiliary main grids 3 are also provided, and the plurality of auxiliary main grids 3 are arranged in parallel with each other. In this way, the length of the sub-main gate 3 between each PAD point 1 and the nearest fine gate 2 is made equal, thereby further facilitating the equalization of the current delivered to each PAD point 1.

Further, the distance between two adjacent auxiliary main grids 3 is equal. So arranged, the balance of the current transmitted to the two auxiliary main gates 3 by the thin gate between the two auxiliary main gates 3 is facilitated.

Preferably, the plurality of fine grids 2 are arranged in parallel with each other. Further, the distance between two adjacent fine grids 2 is equal. So set up, the current collection is more even.

In the present embodiment, preferably, the fine grids 2 are arranged linearly, and further, the sub-main grids 3 are also arranged linearly, and each sub-main grid 3 is perpendicular to each fine grid 2. The arrangement is characterized in that the current transmission path is shorter, so that the current transmission loss is lower, and the conversion efficiency of the battery piece is higher.

In this embodiment, the sectional area of vice main grid 3 is greater than thin grid 2 to vice main grid 3 can bear bigger electric current than thin grid 2, can collect the electric current that thin grid 2 collected better and give PAD point 1 with it transmission, and does not influence the normal transmission speed of electric current, also can not increase the transmission loss of electric current, thereby can guarantee the utility model discloses the high conversion efficiency of battery piece.

Preferably, the width of the auxiliary main grid 3 is larger than that of the fine grid 2, or/and the thickness of the auxiliary main grid 3 is larger than that of the fine grid 2, so that the purpose that the sectional area of the auxiliary main grid 3 is larger than that of the fine grid 2 is achieved.

The utility model discloses the battery piece especially is adapted to the battery piece of shingle nail.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A battery plate having one side provided with one or more spaced PAD spots, comprising: the battery piece is also provided with a plurality of spaced fine grids and auxiliary main grids corresponding to the number of the PAD points, the PAD points are arranged on one side of the length direction of the fine grids, each auxiliary main grid is connected with all the fine grids, and one end of each auxiliary main grid is connected with a corresponding PAD point.

2. The battery piece of claim 1, wherein: when the PAD points are arranged in a plurality, the arrangement direction of the PAD points is the same as the length extension direction of the fine grid.

3. The battery sheet according to claim 1 or 2, characterized in that: when a plurality of PAD points are arranged, a plurality of auxiliary main grids are arranged in parallel.

4. The battery piece of claim 3, wherein: and the distances between two adjacent auxiliary main grids are equal.

5. The battery sheet according to claim 1, 2 or 4, wherein: the fine grids are arranged in parallel.

6. The battery piece of claim 5, wherein: and the distance between two adjacent fine grids is equal.

7. The battery piece of claim 3, wherein: the fine grids are arranged in parallel.

8. The battery piece of claim 7, wherein: and the distance between two adjacent fine grids is equal.

9. The battery sheet according to any one of claims 1, 2, 4, 6 to 8, wherein: the fine grids are all arranged in a straight line shape.

10. The battery piece of claim 9, wherein: the auxiliary main grids are also arranged linearly, and each auxiliary main grid is perpendicular to each fine grid.

11. The battery piece of claim 3, wherein: the fine grids are all arranged in a straight line shape.

12. The battery piece of claim 5, wherein: the fine grids are all arranged in a straight line shape.

13. The battery sheet according to claim 11 or 12, wherein: the auxiliary main grids are also arranged linearly, and each auxiliary main grid is perpendicular to each fine grid.

14. The battery sheet according to any one of claims 1, 2, 4, 6 to 8, 10 to 12, wherein: the sectional area of the auxiliary main grid is larger than that of the fine grid.

15. The battery piece of claim 3, wherein: the sectional area of the auxiliary main grid is larger than that of the fine grid.

16. The battery piece of claim 5, wherein: the sectional area of the auxiliary main grid is larger than that of the fine grid.

17. The battery piece of claim 9, wherein: the sectional area of the auxiliary main grid is larger than that of the fine grid.

18. The battery piece of claim 13, wherein: the sectional area of the auxiliary main grid is larger than that of the fine grid.

19. The battery sheet according to any one of claims 1, 2, 4, 6 to 8, 10 to 12, 15 to 18, wherein: the length of the fine grid between any two adjacent auxiliary main grids is shorter than that of the auxiliary main grids.

20. The battery piece of claim 3, wherein: the length of the fine grid between any two adjacent auxiliary main grids is shorter than that of the auxiliary main grids.

21. The battery piece of claim 5, wherein: the length of the fine grid between any two adjacent auxiliary main grids is shorter than that of the auxiliary main grids.

22. The battery piece of claim 9, wherein: the length of the fine grid between any two adjacent auxiliary main grids is shorter than that of the auxiliary main grids.

23. The battery piece of claim 13, wherein: the length of the fine grid between any two adjacent auxiliary main grids is shorter than that of the auxiliary main grids.

24. The battery piece of claim 14, wherein: the length of the fine grid between any two adjacent auxiliary main grids is shorter than that of the auxiliary main grids.