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Battery string production method

A production method and battery technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as cell cracks, large edge stress of cells, fragments, etc., to prevent hidden cracks and fragments, and improve production yield Effect

Active Publication Date: 2020-12-04
WUXI AUTOWELL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a battery string production method to solve the current problem of excessive stress on the edge of the battery sheet resulting in cracks and fragments of the battery sheet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0071] In this embodiment, the ribbon group, the battery sheet and the flexible member are firstly stacked together in a predetermined stacking manner, and then the stacked ribbon group, the battery sheet and the flexible member are welded and fixed together.

[0072] Wherein, the stacking of the ribbon group, the battery sheet and the flexible parts together in a predetermined stacking manner may include:

[0073] Stack the cells, the ribbon group and the flexible parts in sequence; or stack the cells, the flexible parts and the ribbon group in sequence; or stack the cells, the first flexible part, the ribbon group and the second The two flexible parts are stacked in sequence.

[0074] Such as figure 1 As shown, the specific implementation process of this embodiment is as follows:

[0075] 1. First, absorb the battery piece 1 through the suction cup 4, and place the battery piece 1 at the preset position;

[0076] 2. Clamp a ribbon group 2 with the gripper 5, and stack the...

no. 2 approach

[0082] In the second embodiment, the ribbon group, battery slices and flexible parts are stacked together in a predetermined stacking manner, and then the stacked ribbon group, battery slices and flexible parts are welded and fixed together. .

[0083] Wherein, the stacking of the ribbon group, the battery sheet and the flexible parts together according to a predetermined stacking method includes:

[0084] Arrange a plurality of battery slices at intervals along the series connection direction of the battery string;

[0085] Place a ribbon group and a flexible member sequentially on each cell; or place a flexible member and a ribbon group sequentially on each cell; or place the first flexible member, a flexible member sequentially on each cell A ribbon set and a second flexible member;

[0086] A plurality of battery sheets stacked with ribbon groups and flexible parts are placed close to each other to complete the stacking.

[0087] Such as figure 2 As shown, the specifi...

no. 3 approach

[0095] In the third embodiment, the ribbon group and the battery sheet are first stacked and welded together, and then the flexible member is inserted into the non-welding gap between the end of the battery sheet and the ribbon group and heated and welded. the flexible member.

[0096] Wherein, inserting the flexible piece into the non-welding gap between the end of the battery sheet and the ribbon group and heating and welding the flexible piece includes:

[0097] Pick up the edge part of the cell stacked on the ribbon group;

[0098] A flexible piece is inserted into the non-welding gap between the edge portion and the welding ribbon group, and the flexible piece is heated and fixed.

[0099] Specific as Figure 5 As shown, this embodiment includes the following steps:

[0100] 1. Use a suction cup to pick up and place a battery piece 1, use a jig to hold a ribbon group 2 and stack it on the battery piece 1, and then suck a battery piece 1 and stack it on the ribbon set 2...

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Abstract

The invention discloses a battery string production method which comprises the following steps of stacking and fixing a plurality of solder strip groups and a plurality of battery pieces together, andarranging flexible pieces between the end parts, stacked on the solder strip groups, of the battery pieces and the solder strip groups; stacking the solder strip groups, the battery pieces and the flexible pieces together according to a preset stacking mode, and then welding and fixing the stacked solder strip groups, battery pieces and flexible pieces together; or, stacking and welding the solder strip group and the battery piece together, inserting the flexible pieces between the end parts of the battery pieces and the solder strip groups, and heating and welding the flexible pieces; or, fixing the flexible pieces on the solder strip groups, and then stacking and welding the solder strip groups fixed with the flexible pieces and the battery pieces. According to the technical scheme provided by the invention, the problems of subfissure and breakage of the battery pieces in the battery string production process can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of self-production of photovoltaic cells, in particular to a method for producing battery strings. Background technique [0002] In the production process of photovoltaic cell modules, there is a process of welding multiple cell sheets through a ribbon group to form a cell string. [0003] At present, in order to seek high-efficiency utilization of battery components, manufacturers of solar cell components are exploring ways to increase the utilization rate of solar energy. Some manufacturers focus on the gap between the cells in the battery string, and achieve a larger light-receiving area with a limited module area by reducing the gap between the cells, or even the distance between the negative cells (that is, there is overlap between the cells). . However, since the light-receiving part of the solar cell module is a cell + a ribbon, reducing the cell spacing or even overlapping the cells to achieve a ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/18
CPCH01L31/0504H01L31/1876Y02P70/50
Inventor 李文蒋小龙黄剑雄刘少杰
Owner WUXI AUTOWELL TECH
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