CN219419052U - Welding strip piece and battery assembly - Google Patents
Welding strip piece and battery assembly Download PDFInfo
- Publication number
- CN219419052U CN219419052U CN202320269578.1U CN202320269578U CN219419052U CN 219419052 U CN219419052 U CN 219419052U CN 202320269578 U CN202320269578 U CN 202320269578U CN 219419052 U CN219419052 U CN 219419052U
- Authority
- CN
- China
- Prior art keywords
- sub
- extending direction
- welding
- solder strip
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to the technical field of photovoltaics, in particular to a welding strip piece and a battery assembly, wherein the welding strip piece is suitable for connecting a plurality of battery pieces in series and comprises: the first welding strip areas and the second welding strip areas are arranged at intervals in the extending direction of the welding strip piece; a connection portion connecting the first land area and the second land area; the connecting portion comprises a bending portion, a first sub-connecting portion connected with the first welding strip area and a second sub-connecting portion connected with the second welding strip area, one end of the bending portion is connected with the first sub-connecting portion, the other end of the bending portion is connected with the second sub-connecting portion, the bending portion is of a flat structure, the bending portion is provided with a first surface and a second surface which are opposite in the thickness direction, and the first surface and the second surface are both planes. The welding strip piece has a stable structure, and can reduce the occurrence of phenomena of battery piece cracking and fragments.
Description
Technical Field
The utility model relates to the technical field of photovoltaics, in particular to a welding strip piece and a battery assembly.
Background
With the frequency of non-renewable energy urgent, solar energy as a new energy provides new possibilities for global energy structures. Inexhaustible solar energy can solve the concern of energy deficiency. Solar cells are important devices for achieving conversion of light energy into electrical energy. The current solar cells comprise various types, and are combined to form a cell assembly after the preparation of the cell sheet is completed, so that the large-scale application is realized. From the battery piece to the battery component, a plurality of battery pieces are connected in series to form a battery string firstly through an interconnection technology, then a plurality of battery strings are connected in parallel, and the battery component is formed through processes such as laying, lamination and the like. One of the series connection is to connect adjacent battery cells by means of solder strips.
The solder strip member is usually an opaque structure, and the solar cell power loss caused by shading is arranged on the surface of the cell. In recent years, in order to ensure an effective light receiving area of a battery assembly and improve power of a solar cell, the number of main grids of the solar cell is an important point of research, and a technology without main grids is gradually an effective direction, and a technology without main grids is also an important development direction in the future. In a common battery piece with a main grid, a welding strip is directly connected with the main grid in series welding; for cells without a primary grid, it becomes particularly important how to achieve a secure connection between adjacent cells and meet the necessary load capacity requirements, even with respect to the life of the battery assembly.
The currently used welding strip piece is usually a round wire welding strip, and because the welding strip piece is not subjected to any process treatment, the edges of the battery pieces are subjected to single-point or single-line pressure of the welding strip piece in the process of connecting a plurality of battery pieces in series to form a battery string or in the subsequent lamination process, and the phenomenon of cracking and fragmentation of the battery pieces is easily caused because the welding strip piece is in point contact or line contact with the edges of the battery pieces; on the other hand, in order to ensure the yield of the battery assembly, the distance between the battery pieces is set larger, so that the effective light receiving area of the battery assembly is smaller, the higher power output of the battery assembly is not facilitated, and the welding strip piece is likely to fall off and stretch-break in the lamination process.
Therefore, providing a solder strip with stable structure to reduce the occurrence of the battery cracking phenomenon is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
Therefore, the utility model aims to solve the problems that in the prior art, when a plurality of battery pieces are connected in series to form a battery string or in the lamination process, the welding strip piece is separated and broken and the battery pieces are broken, so that the welding strip piece and the battery assembly are provided.
The utility model provides a welding strip piece, which is suitable for connecting a plurality of battery pieces in series and comprises the following components: the first welding strip areas and the second welding strip areas are arranged at intervals in the extending direction of the welding strip piece; a connection portion connecting the first land area and the second land area; the connecting portion comprises a bending portion, a first sub-connecting portion connected with the first welding strip area and a second sub-connecting portion connected with the second welding strip area, one end of the bending portion is connected with the first sub-connecting portion, the other end of the bending portion is connected with the second sub-connecting portion, the bending portion is of a flat structure, the bending portion is provided with a first surface and a second surface which are opposite in the thickness direction, and the first surface and the second surface are both planes.
Optionally, the extending direction of the first sub-connection portion is parallel to the extending direction of the first bonding pad area, and the extending direction of the second sub-connection portion is parallel to the extending direction of the second bonding pad area.
Optionally, the extending directions of the first welding zone and the second welding zone are parallel; the bending part is arranged in a non-parallel manner with the extending direction of the first welding zone area and the extending direction of the second welding zone area.
Optionally, an angle between an extending direction of the bending portion from the first sub-connecting portion to the second sub-connecting portion and an extending direction of the first bonding pad area ranges from 30 ° to 150 °.
Optionally, the extending direction of the bending part from the first sub-connecting part to the second sub-connecting part is perpendicular to the extending direction of the first welding strip area and the extending direction of the second welding strip area.
Optionally, the shape of the first face and the second face comprises a rectangle; the shape of the cross section of the first sub-connection part in the extending direction perpendicular to the first sub-connection part includes a rectangle, and the shape of the cross section of the second sub-connection part in the extending direction perpendicular to the second sub-connection part includes a rectangle.
Optionally, the shape of the cross section of the first bonding pad region in the direction perpendicular to the extension direction of the first bonding pad region includes a circle; the shape of the cross section of the second land area in the direction perpendicular to the extending direction of the second land area includes a circle.
Optionally, the first sub-connection portion has a dimension in an extending direction of the first sub-connection portion of 0.1mm to 1mm, the bending portion has a dimension in an extending direction of the first sub-connection portion to the second sub-connection portion of 0.1mm to 1mm, and the second sub-connection portion has a dimension in an extending direction of the second sub-connection portion of 0.1mm to 1mm.
Optionally, the thickness of the connection portion is smaller than the thickness of the first bonding pad region and smaller than the thickness of the second bonding pad region.
Optionally, the thickness of the connecting portion is 0.1mm-0.2mm smaller than the thickness of the first welding zone, and the thickness of the connecting portion is 0.1mm-0.2mm smaller than the thickness of the second welding zone.
Optionally, the thickness of the connecting part is 0.05mm-0.2mm; the thickness of the first welding zone is 0.1mm-0.3mm; the thickness of the second welding zone is 0.1mm-0.3mm.
Optionally, the width of the connection portion is greater than the width of the first bonding pad area, or the width of the connection portion is greater than the width of the second bonding pad area.
Optionally, the width of the connecting part is 0.15mm-0.35mm; the width of the first welding zone is 0.1mm-0.3mm; the width of the second welding strip area is 0.1mm-0.3mm.
The present utility model also provides a battery pack comprising: a plurality of battery pieces; above the welding strip piece, welding strip piece series connection adjacent battery piece, first welding strip district is connected with the light receiving face one side of first battery piece, second welding strip district is connected with the back light face one side of second battery piece, first battery piece with the first face of kink sets up relatively, the second battery piece with the second face of kink sets up relatively.
Optionally, the surface of the battery piece comprises and only comprises a plurality of thin grid lines which are arranged at intervals in parallel; or the surface of the battery piece comprises a plurality of thin grid lines which are arranged in parallel at intervals and a main grid line which is arranged vertically to the thin grid lines and is connected with the thin grid lines.
The technical scheme of the utility model has the following advantages:
according to the welding strip piece provided by the technical scheme of the utility model, the first welding strip area and the second welding strip area are arranged at intervals in the extending direction of the welding strip piece, the connecting part is connected with the first welding strip area and the second welding strip area and comprises the bending part, the first sub-connecting part connected with the first welding strip area and the second sub-connecting part connected with the second welding strip area, and the connecting part is subjected to bending treatment, so that the welding strip piece can be prevented from being stretched in the lamination process, and the phenomenon that the welding strip piece is broken or falls off from a battery piece can be prevented, so that the welding strip piece has a stable structure; one end of the bending part is connected with the first sub-connecting part, the other end of the bending part is connected with the second sub-connecting part, the bending part is of a flat structure, the bending part is provided with a first surface and a second surface which are opposite to each other in the thickness direction, and the first surface and the second surface are all planes, so that the edges of the battery pieces are in surface contact with the bending part in the process of laminating or the battery pieces are connected in series, the surface contact area is large, the pressure intensity born by the edges of the battery pieces is reduced, therefore, the welding strip piece can reduce the generation of the phenomena of battery piece splitting and fragments, and the welding strip piece is stable in structure and can reduce the generation of the phenomena of battery piece splitting and fragments.
Further, the extending direction of the first sub-connecting portion is parallel to the extending direction of the first welding strip region, and the extending direction of the second sub-connecting portion is parallel to the extending direction of the second welding strip region; preferably, the extending directions of the first welding zone and the second welding zone are parallel; the extending direction of the bending part from the first sub-connecting part to the second sub-connecting part is perpendicular to the extending direction of the first welding strip area and the extending direction of the second welding strip area, so that the contact area between the bending part and the edge of the battery piece is favorably improved, the pressure intensity born by the edge of the battery piece is reduced, and the phenomena of battery piece cracking and fragments are reduced.
According to the battery assembly provided by the technical scheme of the utility model, the welding strip pieces are connected with adjacent battery pieces in series, the first welding strip area is connected with one side of the light receiving surface of the first battery piece, the second welding strip area is connected with one side of the backlight surface of the second battery piece, the first battery piece is arranged opposite to the first surface, the second battery piece is arranged opposite to the second surface, and the connecting parts of the welding strip pieces are subjected to bending treatment, so that the distance between the adjacent battery pieces in the battery string is shortened, the light leakage loss of the battery assembly is reduced, the effective light receiving area of the battery assembly is improved, and the power of the battery assembly is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a solder strip according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a solder strip according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a first side or a second side according to an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a first bonding pad area perpendicular to the extending direction of the first bonding pad area according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a portion of a battery assembly according to an embodiment of the present utility model.
Reference numerals illustrate:
1-a first welding zone; 2-a second solder strip region;
3-connecting part; 31-a first sub-connection; 32-a bending part; 33-a second sub-connection;
11-a first battery piece; 12-a second battery piece.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
The present embodiment provides a solder strip member adapted to connect a plurality of battery pieces in series, including, with reference to fig. 1:
a first welding strip area 1 and a second welding strip area 2 which are arranged at intervals in the extending direction of the welding strip piece;
a connection portion 3 connecting the first land 1 and the second land 2;
the connecting portion 3 comprises a bending portion 32, a first sub-connecting portion 31 connected with the first welding strip area 1 and a second sub-connecting portion 33 connected with the second welding strip area 2, one end of the bending portion 32 is connected with the first sub-connecting portion 31, the other end of the bending portion 32 is connected with the second sub-connecting portion 33, the bending portion 32 is of a flat structure, the bending portion 32 is provided with a first surface and a second surface which are opposite in the thickness direction of the bending portion 32, and the first surface and the second surface are both planes.
According to the welding strip piece provided by the embodiment, the connecting part 3 is subjected to bending treatment, so that the welding strip piece can be prevented from being stretched in the lamination process, the welding strip piece is prevented from being broken or falling off from a battery piece, and the welding strip piece is stable in structure; one end of the bending part 32 is connected with the first sub-connecting part 31, the other end of the bending part 32 is connected with the second sub-connecting part 33, the bending part 32 is of a flat structure, the bending part 32 is provided with a first surface and a second surface which are opposite in the thickness direction of the bending part 32, and the first surface and the second surface are both planes, so that the edges of the battery pieces are in surface contact with the bending part in the process of connecting a plurality of battery pieces in series to form a battery string or laminating, the contact area of the surface contact is larger, the pressure intensity born by the edges of the battery pieces is reduced by the larger contact area, therefore, the welding strip piece can reduce the generation of the phenomena of battery piece splitting and fragments, and the welding strip piece is stable in structure and can reduce the generation of the phenomena of battery piece splitting and fragments.
In one embodiment, the extending direction of the first sub-connection portion 31 is parallel to the extending direction of the first bonding pad area 1, and the extending direction of the second sub-connection portion 33 is parallel to the extending direction of the second bonding pad area.
In one embodiment, the extending directions of the first bonding area 1 and the second bonding area 2 are parallel; the bending part is arranged in a non-parallel manner with the extending direction of the first welding zone area and the extending direction of the second welding zone area. According to the interval requirement between the adjacent battery pieces, different angles can be set up at the kink. For example, the angle between the extending direction of the bending portion from the first sub-connecting portion to the second sub-connecting portion and the extending direction of the first bonding pad area is 30 ° -150 °, such as 45 ° or 100 °, without limitation.
In achieving high-density arrangement of the battery cells, as shown in fig. 2, it is preferable that the extending direction of the bending portion 32 from the first sub-connection portion 31 to the second sub-connection portion 33 is perpendicular to the extending direction of the first land area 1 and the extending direction of the second land area 2. Thus, the contact area between the bending part and the edge of the battery piece is favorably improved, the pressure intensity on the edge of the battery piece is reduced, and the phenomena of cracking and fragments of the battery piece are reduced.
In one embodiment, referring to fig. 3, the shape of the first face and the second face comprises a rectangle; the shape of the cross section of the first sub-connection part 31 in the direction perpendicular to the extending direction of the first sub-connection part 31 includes a rectangle, and the shape of the cross section of the second sub-connection part 33 in the direction perpendicular to the extending direction of the second sub-connection part 33 includes a rectangle.
In one embodiment, referring to fig. 4, the shape of the cross section of the first land 1 in the direction perpendicular to the extension direction of the first land 1 includes a circle; the shape of the cross section of the second land 2 in the direction perpendicular to the extending direction of the second land 2 includes a circle.
In one embodiment, the dimension of the first sub-connection part 31 in the extending direction of the first sub-connection part 31 is 0.1mm to 1mm, for example, 0.5mm, and if the dimension of the first sub-connection part in the extending direction of the first sub-connection part is less than 0.1mm, the effect of reducing the occurrence of the phenomena of cell cracking and chipping is not obvious; if the dimension of the first sub-connection part in the extending direction of the first sub-connection part is greater than 1mm, the effect of shortening the interval between adjacent battery pieces is not obvious.
In one embodiment, the dimension of the bending portion 32 in the extending direction from the first sub-connecting portion to the second sub-connecting portion is 0.1mm to 1mm, for example, 0.8mm, and if the dimension of the bending portion in the extending direction from the first sub-connecting portion to the second sub-connecting portion is less than 0.1mm, the effect of reducing the occurrence of the phenomena of breaking and chipping of the battery is not obvious; if the dimension of the bending part in the extending direction from the first sub-connecting part to the second sub-connecting part is greater than 1mm, the effect of reducing the phenomena of cracking and chipping of the battery is not obvious. The size of the bending part in the extending direction from the first sub-connecting part to the second sub-connecting part is matched with the thickness of the battery piece.
In one embodiment, the dimension of the second sub-connection part 33 in the extending direction of the second sub-connection part 33 is 0.1mm to 1mm, for example, 0.5mm, and if the dimension of the second sub-connection part in the extending direction of the second sub-connection part is less than 0.1mm, the effect of reducing the occurrence of the phenomena of cell cracking and chipping is not obvious; if the dimension of the second sub-connection part in the extending direction of the second sub-connection part is greater than 1mm, the effect of shortening the interval between adjacent battery pieces is not obvious.
In one embodiment, the thickness of the connection portion 3 is smaller than the thickness of the first land area 1 and smaller than the thickness of the second land area 2.
In one embodiment, the thickness of the connection portion 3 is 0.1mm-0.2mm, e.g. 0.15mm, smaller than the thickness of the first land area 1, and the thickness of the connection portion is 0.1mm-0.2mm, e.g. 0.15mm, smaller than the thickness of the second land area. The thickness of the first welding strip area 1 is the dimension of the first welding strip area 1 in the direction perpendicular to the plane where the battery piece is located, the thickness of the second welding strip area 2 is the dimension of the second welding strip area 2 in the direction perpendicular to the plane where the battery piece is located, and the thickness direction of the connecting part 3 is parallel to the thickness direction of the first welding strip area 1.
In one embodiment, the thickness of the connection portion 3 is 0.05mm-0.2mm, for example 0.1mm; the thickness of the first welding zone 1 is 0.1mm-0.3mm, such as 0.2mm; the thickness of the second land area 2 is 0.1mm-0.3mm, for example 0.2mm.
In one embodiment, the width of the connection portion 3 is greater than the width of the first bonding pad region 1, or the width of the connection portion 3 is greater than the width of the second bonding pad region 2. The width of the connecting portion 3 is the dimension of the projection of the connecting portion 3 on the plane of the battery piece in the extending direction perpendicular to the first welding zone 1, the width of the first welding zone 1 is the dimension of the projection of the first welding zone 1 on the battery piece in the extending direction perpendicular to the first welding zone 1, the width of the second welding zone 2 is the dimension of the projection of the second welding zone 2 on the battery piece in the extending direction perpendicular to the second welding zone 2.
In one embodiment, the width of the connection portion 3 is 0.15mm-0.35mm, for example 0.2mm; the width of the first welding strip area is 0.1mm-0.3mm, such as 0.15mm; the width of the second bonding pad region is 0.1mm-0.3mm, for example 0.15mm.
The welding strip piece is obtained by flattening and bending the initial welding strip piece, the section of the initial welding strip piece in the extending direction perpendicular to the initial welding strip piece is circular, the device for flattening and bending the initial welding strip piece comprises a welding strip flattening and bending device, flattening and bending are simple and feasible, the precision and stability requirements of the welding strip flattening and bending device are reduced, and the production efficiency of the welding strip piece is improved.
Example 2
The present embodiment provides a battery pack, referring to fig. 5, including:
a plurality of battery pieces;
in the solder strip member according to embodiment 1, the solder strip members are connected in series with adjacent battery pieces, the first solder strip region 1 is connected to the light receiving surface side of the first battery piece 11, the second solder strip region 2 is connected to the backlight surface side of the second battery piece 12, the first battery piece 11 is disposed opposite to the first surface of the bending portion, and the second battery piece 12 is disposed opposite to the second surface of the bending portion.
According to the battery assembly provided by the embodiment, the welding strip pieces are connected in series with the adjacent battery pieces, the connecting part 3 of the welding strip pieces is subjected to bending treatment, compared with the welding strip pieces which are not subjected to bending treatment, the distance between the adjacent battery pieces in the battery string is shortened, the light leakage loss of the battery assembly is reduced, the effective light receiving area of the battery assembly can be increased, the power of the battery assembly can be increased by 5W-10W, and therefore the power of the battery assembly can be increased.
The welding strip piece has wide application range, and is not only suitable for series welding between common battery pieces with main grids, but also particularly suitable for series welding between battery pieces without main grids. In one embodiment, the surface of the battery piece comprises and only comprises a plurality of thin grid lines which are arranged in parallel at intervals; or the surface of the battery piece comprises a plurality of thin grid lines which are arranged in parallel at intervals and a main grid line which is arranged vertically to the thin grid lines and is connected with the thin grid lines.
The solder strip is also suitable for different types of battery pieces. The cell may include a PERC (emitter and back passivation solar cell, passivated Emitter and Rear Cell), TOPCon (tunnel oxide passivation contact, tunnel Oxide Passivated Contact) solar cell, or HJT (heterojunction, heteroJunction with intrinsic Thin layer) solar cell.
In one embodiment, the manner of connecting the welding strip piece and the battery piece comprises the connection by adopting conductive glue or the welding by adopting a welding process.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. A solder strip adapted to connect a plurality of battery cells in series, comprising:
the first welding strip areas and the second welding strip areas are arranged at intervals in the extending direction of the welding strip piece;
a connection portion connecting the first land area and the second land area;
the connecting portion comprises a bending portion, a first sub-connecting portion connected with the first welding strip area and a second sub-connecting portion connected with the second welding strip area, one end of the bending portion is connected with the first sub-connecting portion, the other end of the bending portion is connected with the second sub-connecting portion, the bending portion is of a flat structure, the bending portion is provided with a first surface and a second surface which are opposite in the thickness direction, and the first surface and the second surface are both planes.
2. The solder strip member according to claim 1, wherein the direction of extension of the first sub-connection portion is parallel to the direction of extension of the first solder strip region, and the direction of extension of the second sub-connection portion is parallel to the direction of extension of the second solder strip region;
preferably, the extending directions of the first welding zone and the second welding zone are parallel; the bending part is arranged in a non-parallel manner with the extending direction of the first welding zone area and the extending direction of the second welding zone area.
3. The solder strip member according to claim 2, wherein an angle between an extending direction of the bent portion from the first sub-connection portion to the second sub-connection portion and an extending direction of the first solder strip region ranges from 30 ° to 150 °;
preferably, the extending direction of the bending part from the first sub-connecting part to the second sub-connecting part is perpendicular to the extending direction of the first welding strip area and the extending direction of the second welding strip area.
4. The solder strip of claim 1, wherein the shape of the first face and the second face comprises a rectangle; the shape of the cross section of the first sub-connection part in the extending direction perpendicular to the first sub-connection part includes a rectangle, and the shape of the cross section of the second sub-connection part in the extending direction perpendicular to the second sub-connection part includes a rectangle.
5. The solder strip member according to claim 1, wherein the shape of the cross section of the first solder strip region in a direction perpendicular to the extension direction of the first solder strip region comprises a circle;
the shape of the cross section of the second land area in the direction perpendicular to the extending direction of the second land area includes a circle.
6. The solder strip member according to any one of claims 1 to 5, wherein the first sub-connection portion has a dimension in an extending direction of the first sub-connection portion of 0.1mm to 1mm, the bent portion has a dimension in an extending direction of the first sub-connection portion to the second sub-connection portion of 0.1mm to 1mm, and the second sub-connection portion has a dimension in an extending direction of the second sub-connection portion of 0.1mm to 1mm.
7. The solder strip member according to any one of claims 1 to 5, wherein the thickness of the connection portion is smaller than the thickness of the first solder strip region and smaller than the thickness of the second solder strip region;
preferably, the thickness of the connecting part is 0.1mm-0.2mm smaller than that of the first welding zone, and the thickness of the connecting part is 0.1mm-0.2mm smaller than that of the second welding zone;
preferably, the thickness of the connecting part is 0.05mm-0.2mm; the thickness of the first welding zone is 0.1mm-0.3mm; the thickness of the second welding zone is 0.1mm-0.3mm.
8. The solder strip member according to any one of claims 1 to 5, wherein the width of the connection portion is larger than the width of the first solder strip region or the width of the connection portion is larger than the width of the second solder strip region;
preferably, the width of the connecting part is 0.15mm-0.35mm; the width of the first welding zone is 0.1mm-0.3mm; the width of the second welding strip area is 0.1mm-0.3mm.
9. A battery assembly, comprising:
a plurality of battery pieces;
the solder strip of any of claims 1 to 8, wherein the solder strip connects adjacent cells in series, the first solder strip region is connected to a light receiving surface side of a first cell, the second solder strip region is connected to a backlight surface side of a second cell, the first cell is disposed opposite to a first surface of the bend, and the second cell is disposed opposite to a second surface of the bend.
10. The battery assembly of claim 9, wherein the surface of the battery sheet comprises and only comprises a plurality of parallel spaced apart fine grid lines; or the surface of the battery piece comprises a plurality of thin grid lines which are arranged in parallel at intervals and a main grid line which is arranged vertically to the thin grid lines and is connected with the thin grid lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320269578.1U CN219419052U (en) | 2023-02-14 | 2023-02-14 | Welding strip piece and battery assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320269578.1U CN219419052U (en) | 2023-02-14 | 2023-02-14 | Welding strip piece and battery assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219419052U true CN219419052U (en) | 2023-07-25 |
Family
ID=87242565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320269578.1U Active CN219419052U (en) | 2023-02-14 | 2023-02-14 | Welding strip piece and battery assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219419052U (en) |
-
2023
- 2023-02-14 CN CN202320269578.1U patent/CN219419052U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10276733B2 (en) | Solar cell and solar cell module | |
| CN105789359A (en) | Manufacturing method for double-face solar energy cell assembly | |
| CN115732577B (en) | Photovoltaic cell and photovoltaic module | |
| CN219419052U (en) | Welding strip piece and battery assembly | |
| CN111106194A (en) | Double-sided solar cell and photovoltaic module | |
| JP7239912B1 (en) | photovoltaic module structure | |
| CN218783041U (en) | Back contact solar cell module | |
| US20150155416A1 (en) | Solar cell module | |
| CN111564514B (en) | Double-layer combined double-sided assembly for P/N type battery piece | |
| CN115498055A (en) | Photovoltaic module and preparation method thereof | |
| CN214477494U (en) | Photovoltaic module | |
| CN211700304U (en) | Six main grid photovoltaic module | |
| CN210182397U (en) | Large-size laminated-tile battery structure | |
| CN212934635U (en) | Conductive interconnection piece of laminated assembly and laminated assembly | |
| CN210866217U (en) | Photovoltaic module | |
| CN211789055U (en) | High-power non-hot spot effect assembly | |
| CN114284381A (en) | Heterojunction solar cell and manufacturing method thereof | |
| CN111081803A (en) | Electric connection piece suitable for fold tile photovoltaic module and fold tile photovoltaic module | |
| CN112466965B (en) | Back contact solar cell piece with extension electrode and solar cell module | |
| CN210926045U (en) | Electric connection piece suitable for fold tile photovoltaic module and fold tile photovoltaic module | |
| CN213184318U (en) | Heterojunction solar cell and photovoltaic module | |
| CN219246699U (en) | High-efficient battery string structure and fold tile subassembly | |
| CN214203701U (en) | Photovoltaic module | |
| CN221304700U (en) | Electrode structure of back contact battery, back contact battery and assembly thereof | |
| CN212323015U (en) | P type N type battery hybrid welding does not have interval subassembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |