Search

CN-121985603-A - Photovoltaic module, manufacturing process and manufacturing equipment

CN121985603ACN 121985603 ACN121985603 ACN 121985603ACN-121985603-A

Abstract

The application relates to a photovoltaic module, a manufacturing process and manufacturing equipment. The photovoltaic module battery piece has the advantages of low hidden crack risk, good product quality, simplified process flow and low manufacturing cost. The photovoltaic module comprises a battery piece and a bus bar, wherein an electrode of the battery piece is arranged on the back surface of the battery piece, the bus bar comprises a conductive side and an insulating side in the thickness direction of the photovoltaic module, the conductive side is electrically connected with the battery piece, the insulating side faces the back surface of the battery piece, the insulating side is provided with a buffer structure, the buffer structure protrudes out of the insulating side, and the insulating side is contacted with the back surface of the battery piece through the buffer structure.

Inventors

  • PENG YINGYING
  • Bi Shuqin
  • YANG JINGGUO

Assignees

  • 晶科能源(海宁)有限公司

Dates

Publication Date
20260505
Application Date
20260407

Claims (10)

  1. 1. A photovoltaic module, comprising: a battery sheet (1) having an electrode provided on the back surface of the battery sheet (1); Bus bar (2) are located the back of battery piece (1) in photovoltaic module's thickness direction, bus bar (2) are including electrically conductive side (201) and insulating side (202), electrically conductive side (201) with battery piece (1) electric connection, insulating side (202) orientation the back of battery piece (1), insulating side (202) are provided with buffer structure, buffer structure protruding in insulating side (202) set up, insulating side (202) pass through buffer structure with the back contact of battery piece (1).
  2. 2. The photovoltaic module according to claim 1, characterized in that the buffer structure comprises a plurality of protruding portions (203), and the protruding portions (203) are arranged at intervals.
  3. 3. The photovoltaic module according to claim 2, characterized in that at least two of the protrusions (203) are in one group in the width direction of the bus bar (2), and the protrusions (203) of adjacent groups are arranged in a staggered or aligned manner in the length direction of the bus bar (2).
  4. 4. The photovoltaic module according to claim 2, characterized in that the cross-sectional shape of the protruding portion (203) perpendicular to the extending direction thereof is circular, and the maximum diameter of the protruding portion (203) is 1mm-1.5mm.
  5. 5. The photovoltaic module according to any one of claims 1-4, further comprising a first connection strap (3), wherein the first connection strap (3) comprises a connection portion (301) and a bending portion (302) that are connected, the connection portion (301) is electrically connected to the cell (1), and the bending portion (302) is bent towards the back of the cell (1) and is electrically connected to the conductive side (201).
  6. 6. The photovoltaic module according to claim 5, wherein the extending direction of the connecting portion (301) is disposed at an angle to the extending direction of the bending portion (302).
  7. 7. The photovoltaic module according to claim 5, wherein a plurality of the battery pieces (1) are provided, the plurality of battery pieces (1) are electrically connected to form a battery string, the bus bar (2) is located at the back surface of one of the battery pieces (1), and other battery pieces (1) adjacent to the battery piece (1) are electrically connected to the conductive side (201) through other first connection strips (3).
  8. 8. A process for preparing a photovoltaic module, the process comprising: Electrically connecting the conductive side (201) of the bus bar (2) with the battery piece (1); The bus bar (2) is placed on the back of the battery piece (1) with the insulating side (202) of the bus bar (2) facing the back of the battery piece (1).
  9. 9. The process of claim 8, further comprising electrically connecting adjacent cells (1) to the conductive side (201).
  10. 10. A manufacturing apparatus of a photovoltaic module, characterized in that the manufacturing apparatus comprises: the welding device is used for electrically connecting the conductive side (201) of the bus bar (2) with the battery piece (1); And the clamping device is used for clamping the bus bar (2) and placing the bus bar (2) on the back surface of the battery piece (1) so that the insulating side (202) of the bus bar (2) faces the back surface of the battery piece (1).

Description

Photovoltaic module, manufacturing process and manufacturing equipment Technical Field The application relates to the technical field of solar cells, in particular to a photovoltaic module, a manufacturing process and manufacturing equipment. Background The photovoltaic module is core equipment for converting solar energy into electric energy, and is a key component of a photovoltaic power generation system. The photovoltaic module can directly convert solar energy into direct current electric energy and is widely applied to distributed roof power stations, large-scale ground photovoltaic power stations, off-grid systems and various photovoltaic products. Generally, the photovoltaic module includes a battery piece and a bus bar, and the battery piece is connected with the bus bar through a welding strip, and the bus bar is bent to the back of the battery piece so as to hide the bus bar and increase the photoelectric conversion area of the battery piece. In the related art, in order to prevent short circuit, a spacer is required to be arranged between the back of the battery piece and the bus bar, but due to the fact that the thickness of the spacer is high, the battery piece is easy to generate hidden cracks under the action of external force in the subsequent process, the product quality of the photovoltaic module is affected, and moreover, the manufacturing process of the photovoltaic module is complex, and the manufacturing cost is high. Disclosure of Invention Based on the above, it is necessary to provide a photovoltaic module, a manufacturing process and a manufacturing device aiming at the problems of hidden cracking risk, influence on product quality, complex process and high manufacturing cost of the photovoltaic module. A photovoltaic module, comprising: The electrode of the battery piece is arranged on the back surface of the battery piece; The bus bar is positioned on the back of the battery piece, the bus bar comprises a conductive side and an insulating side in the thickness direction of the photovoltaic module, the conductive side is electrically connected with the battery piece, the insulating side faces the back of the battery piece, the insulating side is provided with a buffer structure, the buffer structure protrudes out of the insulating side, and the insulating side is contacted with the back of the battery piece through the buffer structure. In one embodiment of the present application, the buffer structure includes a plurality of protruding portions, and the protruding portions are disposed at intervals. In one embodiment of the present application, at least two of the protrusions are formed as a group in the width direction of the bus bar, and the protrusions of adjacent groups are arranged in a staggered or aligned manner in the length direction of the bus bar. In one embodiment of the application, the cross-sectional shape of the protrusion perpendicular to the extending direction thereof is circular, and the maximum diameter of the protrusion is 1mm-1.5mm. In an embodiment of the application, the battery pack further includes a first connecting band, the first connecting band includes a connecting portion and a bending portion, the connecting portion is electrically connected with the battery piece, and the bending portion bends towards the back surface of the battery piece and is electrically connected with the conductive side. In an embodiment of the application, an extending direction of the connecting portion and an extending direction of the bending portion form an included angle. In one embodiment of the present application, a plurality of the battery pieces are provided, the plurality of battery pieces are electrically connected to form a battery string, the bus bar is located at the back surface of one of the battery pieces, and other battery pieces adjacent to the battery piece are electrically connected to the conductive side through other first connection bands. A process for preparing a photovoltaic module, the process comprising: Electrically connecting the conductive side of the bus bar with the battery piece; the bus bar is placed on the back surface of the battery piece, and the insulation side of the bus bar faces the back surface of the battery piece. In one embodiment of the application, the method further comprises electrically connecting adjacent battery pieces with the conductive side. A manufacturing apparatus of a photovoltaic module, the manufacturing apparatus comprising: The welding device is used for electrically connecting the conductive side of the bus bar with the battery piece; and the clamping device is used for clamping the bus bar and placing the bus bar on the back surface of the battery piece, so that the insulating side of the bus bar faces the back surface of the battery piece. Above-mentioned photovoltaic module, including battery piece and busbar, the busbar includes electrically conductive side and insulating side, wherein electrically co