CN210723047U

CN210723047U - Double-sided battery piece

Info

Publication number: CN210723047U
Application number: CN201921932827.0U
Authority: CN
Inventors: 曹建鸿
Original assignee: Hangzhou Taifu New Energy Co ltd
Current assignee: Hangzhou Taifu New Energy Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-06-09
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a double-sided battery piece, which comprises a back polar plate, a first positive plate and a second positive plate, wherein the outer surface of the back polar plate is uniformly provided with a first electrode, the outer side of the first electrode is wrapped with a reinforcing layer, the first positive plate is arranged below the back plate, the front surface of the first positive plate is evenly provided with first auxiliary grid lines in the horizontal direction, the front surface of the first positive plate is evenly provided with first main grid lines in the vertical direction, a first welding point is arranged in the middle of the first main grid line, grooves are formed in the upper edge and the lower edge of the first positive plate, the second positive plate is arranged above the back plate, and the positive horizontal direction of the second positive plate is evenly provided with second auxiliary grid lines, the positive vertical direction of the second positive plate is evenly provided with second main grid line grooves, and second electrodes are evenly arranged inside the second main grid line grooves. The double-sided battery piece increases the using area for electric energy conversion, and effectively improves the electric energy conversion rate of the whole battery piece.

Description

Double-sided battery piece

Technical Field

The utility model relates to a solar cell technical field specifically is a double-sided battery piece.

Background

The solar cell is a solar cell which is developed most rapidly at present, the structure and the production process of the solar cell are shaped, products are widely used in space and ground, in order to reduce production cost, solar cells and the like applied to the ground at present adopt solar-grade monocrystalline silicon rods, material performance indexes are relaxed, and some monocrystalline silicon rods special for the solar cell can be prepared by redrawing head and tail materials processed by semiconductor devices and waste monocrystalline silicon materials.

However, most of solar cells in the current market are used on a single side, the overall electric energy conversion rate is low, the existing cells are mostly conductive by silver paste, the strength is weak, and the cells are easily extruded with welding rods in the manufacturing and production process, so that the overall fragmentation of the cells is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double-sided battery piece to solve the solar wafer on the existing market who proposes in the above-mentioned background art and mostly be the single face and use, holistic electric energy conversion is lower, and current battery piece utilizes silver thick liquid to conduct more, and intensity is more weak, and the battery piece is in making the production process, easy and take place the extrusion between the welding rod, and lead to the whole cracked problem of battery piece.

In order to achieve the above object, the utility model provides a following technical scheme: a double-sided battery piece comprises a back pole plate, a first positive pole plate and a second positive pole plate, wherein a first electrode is uniformly arranged on the outer surface of the back pole plate, the outer side of the first electrode is wrapped with a reinforcing layer, the first positive plate is arranged below the back plate, the front surface of the first positive plate is evenly provided with first auxiliary grid lines in the horizontal direction, the front surface of the first positive plate is evenly provided with first main grid lines in the vertical direction, a first welding point is arranged in the middle of the first main grid line, grooves are formed in the upper edge and the lower edge of the first positive plate, the second positive plate is arranged above the back plate, and the front side of the second positive plate is uniformly provided with second auxiliary grid lines in the horizontal direction, the front side of the second positive plate is uniformly provided with second main grid line grooves in the vertical direction, and the inside of second main grid wire casing evenly installs the second electrode, the left and right sides of second electrode all is provided with the spacing groove.

Preferably, the external dimensions of the back polar plate, the first positive polar plate and the second positive polar plate are matched, and a three-layer structure is formed among the back polar plate, the first positive polar plate and the second positive polar plate.

Preferably, the first electrode is distributed in a dot matrix manner along the outer surface of the back plate, a full surrounding structure is formed between the first electrode and the reinforcing layer, and the reinforcing layer is made of a graphene layer.

Preferably, the number of the grooves is matched with that of the first main grid lines, and the grooves are vertically symmetrical about the horizontal center line of the first main grid lines.

Preferably, the number of the second electrodes is identical to that of the first electrodes, and the positions of the second electrodes correspond to those of the first electrodes.

Preferably, the structure of the limiting groove is a zigzag structure, and a semi-surrounding structure is formed between the limiting groove and the second electrode.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the double-sided battery piece is provided with the second positive plate and the first positive plate which are respectively arranged on the front side and the back side of the back plate, so that the whole battery piece is of a three-layer structure in total, and the positive plates are arranged on the outer side surface, so that the whole battery piece can be used on two sides;

2. the reinforcing layer made of the graphene material has excellent conductivity, the conductive efficiency between electrodes can be effectively enhanced, and therefore the electric energy conversion rate of the whole battery piece is enhanced;

3. the quantity of the second electrodes arranged on the second positive plate, the quantity of the first electrodes arranged on the second positive plate and the quantity of the first electrodes arranged on the back plate and the arranged dot matrix positions are the same, so that the two electrodes can be mutually and positively connected for fixed connection, the limiting grooves arranged around the second electrodes reserve holes for the welding connection between the second electrodes and the first electrodes, the situation that the positive plate is cracked due to welding operation is further avoided, and the safety and stability of the whole battery plate in the assembling process are improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the front structure of the back plate of the present invention;

fig. 3 is a schematic view of the bottom view structure of the present invention;

fig. 4 is a schematic top view of the present invention;

fig. 5 is a schematic view of a part of an enlarged structure at a in fig. 2 according to the present invention.

In the figure: 1. a back plate; 2. a first electrode; 3. a reinforcing layer; 4. a first positive electrode plate; 5. a first secondary gate line; 6. a first main gate line; 7. a first welding point; 8. a groove; 9. a second positive electrode plate; 10. a second pair of gate lines; 11. a second main grid line groove; 12. a second electrode; 13. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a double-sided battery piece comprises a back plate 1, a first electrode 2, a reinforcing layer 3, a first positive plate 4, a first auxiliary grid line 5, a first main grid line 6, a first welding point 7, a groove 8, a second positive plate 9, a second auxiliary grid line 10, a second main grid line groove 11, a second electrode 12 and a limiting groove 13, wherein the first electrode 2 is uniformly arranged on the outer surface of the back plate 1, the reinforcing layer 3 is wrapped on the outer side of the first electrode 2, the first electrode 2 is distributed in a dot matrix manner along the outer surface of the back plate 1, a full-surrounding structure is formed between the first electrode 2 and the reinforcing layer 3, the reinforcing layer 3 is made of graphene layers, the first electrodes 2 are uniformly arranged on the back plate 1 at equal intervals and are distributed in a dot matrix manner, nine electrodes are transversely arranged, six lines are longitudinally arranged, the back plate 1 is divided into a plurality of small blocks, and the conduction uniformity and the conduction efficiency of the whole back plate 1 are improved, meanwhile, the reinforcing layer 3 made of the graphene has excellent conductivity, so that the conductive efficiency between electrodes can be effectively enhanced, and the electric energy conversion rate of the whole battery piece is enhanced;

the first positive plate 4 is arranged below the back plate 1, the front horizontal direction of the first positive plate 4 is uniformly provided with first auxiliary grid lines 5, the front vertical direction of the first positive plate 4 is uniformly provided with first main grid lines 6, the middle position of the first main grid lines 6 is provided with a first welding point 7, the upper edge and the lower edge of the first positive plate 4 are both provided with grooves 8, the number of the grooves 8 is matched with the number of the first main grid lines 6, the grooves 8 are vertically symmetrical about the horizontal central line of the first main grid lines 6, the upper end and the lower end of the first main grid lines 6 are symmetrically provided with the grooves 8, so that a welding groove for welding rods is reserved in advance, molten welding rods are accommodated conveniently, the situation that the welding rods extrude the surrounding first positive plate 4 during welding is effectively avoided, the situation that the first positive plate 4 is cracked due to welding with the welding rods is reduced, and certain cost is saved, the unnecessary waste is avoided, the second positive plate 9 is arranged above the back plate 1, the second auxiliary grid lines 10 are uniformly arranged in the horizontal direction of the front face of the second positive plate 9, the appearance sizes of the back plate 1, the first positive plate 4 and the second positive plate 9 are identical, a three-layer structure is formed among the back plate 1, the first positive plate 4 and the second positive plate 9, the second positive plate 9 and the first positive plate 4 are respectively arranged on the front face and the back face of the back plate 1, so that the whole battery piece is totally of the three-layer structure, and the positive plates are arranged on the outer side faces, so that the whole battery piece can be used on two sides;

the front of the second positive plate 9 is uniformly provided with second main grid line grooves 11 in the vertical direction, second electrodes 12 are uniformly arranged in the second main grid line grooves 11, the number of the second electrodes 12 is identical to the number of the first electrodes 2, the positions of the second electrodes 12 correspond to the positions of the first electrodes 2, the number and the lattice positions of the second electrodes 12 on the second positive plate 9 are the same as the number and the lattice positions of the first electrodes 2 on the back plate 1, so that the two electrodes can be aligned and fixedly connected with each other, the left side and the right side of the second electrode 12 are respectively provided with a limiting groove 13, the structure of the limiting groove 13 is a zigzag structure, a semi-surrounding structure is formed between the limiting groove 13 and the second electrode 12, and the limiting grooves 13 around the second electrode 12 reserve holes for the welding connection between the second electrode 12 and the first electrodes 2, the situation that the positive plate is broken due to welding operation is further avoided, and the safety and stability of the whole battery plate in the assembling process are improved.

The working principle is as follows: for such double-sided battery piece, firstly, a first positive plate 4 and a second positive plate 9 are manufactured according to a traditional manufacturing method of a monocrystalline silicon battery piece, a first auxiliary grid line 5 is arranged and installed in the first positive plate 4 along the horizontal direction, then, nine first main grid lines 6 are arranged and installed along the vertical direction, a first welding point 7 is reserved in the middle of each first main grid line 6, eighteen symmetrical grooves 8 are cut in the upper outer edge and the lower outer edge of the first positive plate 4, similarly, a second auxiliary grid line 10 is arranged and installed in the second positive plate 9 along the horizontal direction, then, nine second main grid line grooves 11 are arranged and installed along the vertical direction, the second main grid line grooves 11 penetrate through a second electrode 12, meanwhile, a limiting groove 13 is reserved outside the second electrode 12, then, the first positive plate 4 is placed below a back plate 1 to align with the back plate 1, meanwhile, the second positive plate 9 is placed above the back plate 1, the second positive plate and the back plate 1 are aligned, the first electrode 2, the reinforcing layer 3 and the second electrode 12 are aligned, and then the first electrode, the reinforcing layer and the second electrode are welded together through welding rods, so that the whole double-sided battery piece is used.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two-sided battery piece, includes back plate (1), first positive plate (4) and second positive plate (9), its characterized in that: the outer surface of the back polar plate (1) is uniformly provided with a first electrode (2), the outer side of the first electrode (2) is wrapped with a reinforcing layer (3), the first positive plate (4) is arranged below the back polar plate (1), the front horizontal direction of the first positive plate (4) is uniformly provided with a first auxiliary grid line (5), the front vertical direction of the first positive plate (4) is uniformly provided with a first main grid line (6), the middle position of the first main grid line (6) is provided with a first welding point (7), the upper edge and the lower edge of the first positive plate (4) are respectively provided with a groove (8), the second positive plate (9) is arranged above the back polar plate (1), the front horizontal direction of the second positive plate (9) is uniformly provided with a second auxiliary grid line (10), the front vertical direction of the second positive plate (9) is uniformly provided with a second main grid line groove (11), and the inside of second main grid line groove (11) evenly installs second electrode (12), the left and right sides of second electrode (12) all is provided with spacing groove (13).

2. The double-sided battery sheet according to claim 1, wherein: the external dimensions among the back polar plate (1), the first positive polar plate (4) and the second positive polar plate (9) are identical, and a three-layer structure is formed among the back polar plate (1), the first positive polar plate (4) and the second positive polar plate (9).

3. The double-sided battery sheet according to claim 1, wherein: the first electrode (2) is distributed in a dot matrix mode along the outer surface of the back plate (1), a full surrounding structure is formed between the first electrode (2) and the reinforcing layer (3), and the reinforcing layer (3) is made of graphene layers.

4. The double-sided battery sheet according to claim 1, wherein: the number of the grooves (8) is matched with that of the first main grid lines (6), and the grooves (8) are vertically symmetrical about the horizontal center line of the first main grid lines (6).

5. The double-sided battery sheet according to claim 1, wherein: the number of the second electrodes (12) is matched with that of the first electrodes (2), and the positions of the second electrodes (12) correspond to those of the first electrodes (2).

6. The double-sided battery sheet according to claim 1, wherein: the structure of the limiting groove (13) is a reversed-square structure, and a semi-surrounding structure is formed between the limiting groove (13) and the second electrode (12).