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A welding bead and welding system for welding battery string busbars

A confluence belt and layering technology, which is applied in the field of solar energy applications, can solve the problems of false welding or over-welding of the heating rod, and achieve the effects of avoiding the drop of welding temperature, uniform heating and good welding effect

Active Publication Date: 2021-07-16
晶澳(扬州)新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above analysis, the embodiment of the present invention aims to provide a welding bead and welding system for welding battery string busbars, so as to solve the problem that the contact welding part of the existing heating rod is prone to weak welding or over welding

Method used

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  • A welding bead and welding system for welding battery string busbars
  • A welding bead and welding system for welding battery string busbars
  • A welding bead and welding system for welding battery string busbars

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Such as figure 1 As shown, the bus strip 1 includes a bus terminal 11, a pin 12 and a welding terminal 13, the bus terminal 11 and the welding terminal 13 are connected through the pin 12, the bus terminal 11 is a bus terminal connected to other battery string bus strips, and the welding terminal 13 is The area that is welded to the positive or negative pole of the battery string. The bus strip 1 is a tin-coated copper strip, the width of the main grid of the battery is 0.5-1.2 mm, and the width of the welding end 13 is 2-3 mm.

[0037] Heating rod contact welding is to heat the heating rod by energizing it, and then transfer the heat to the welding bead, through which the welding bead contacts and welds with the confluence belt 1, but the welding bead is a whole, if the heating state of the heating rods at both ends is inconsistent, welding problems may occur , Welding problems such as over-welding or virtual welding.

[0038] When the busbar 1 is welded to the shing...

Embodiment 2

[0066] This embodiment provides a welding system for welding busbars of battery strings, including the welding bead provided in Embodiment 1, a heating rod, a control unit and a driving unit.

[0067] Compared with the prior art, the beneficial effects of the welding system for battery string busbar welding provided in this embodiment are basically the same as those of the welding bead provided in Embodiment 1, and will not be repeated here.

[0068] Specifically, the number of heating rods is the same as the number of segments of the welding bead, that is, each bead split is equipped with a heating rod, and the length of the heating rod is the same as the length of the bead split (that is, the length of the groove 21), so that The welding temperature of each bead split tends to be consistent, and the welding effect is better.

[0069] The heating rod is detachably installed in the groove 21 of the welding bead, and the welding bead is detachably installed on the drive unit, s...

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Abstract

The invention relates to a welding layer and a welding system used for welding battery string confluence strips, which belong to the field of solar energy applications and are used to solve the problem that the contact welding part of the existing heating rod is prone to false welding or over welding. The welding bead used for welding bus strips of battery strings of the present invention includes a bead body, the bead body is provided with a welding part, the welding part is provided with a heating extension part, and the heating extension part corresponds to the pins of the busbar one by one. In the present invention, a heating extension part corresponding to the pins is provided at the welding part to compensate for the heat dissipated due to the heat conduction of the pins of the busbar, avoiding a drop in the welding temperature at the pins, and improving the welding quality of the busbar of the battery string .

Description

technical field [0001] The invention relates to the technical field of solar energy applications, in particular to a welding bead and a welding system for welding busbars of battery strings. Background technique [0002] Shingled photovoltaic modules have attracted much attention due to their superior shingling technology and power generation efficiency. In the production process of shingled photovoltaic modules, the welding quality of the battery string confluence belt is extremely high. The existing shingling welding technology mainly includes heating rods. Contact welding, infrared welding and conductive adhesive welding, etc. Among them, infrared welding and conductive adhesive welding have obvious disadvantages. For example, the temperature of infrared welding is not easy to control, and often burns the staff, and even the parts to be welded will become discolored and deteriorated due to overheating; conductive adhesive welding has low conductivity and low contact resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/02B23K20/26H01L31/18
CPCB23K20/023B23K20/26H01L31/18Y02P70/50
Inventor 商林太叶玉秋陈宏月
Owner 晶澳(扬州)新能源有限公司
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