Patent ID: 9716198
Date: 2017-07-25
CPC Classifications: B23K,H01L,Y02E

Claim:
1. A photovoltaic interconnect wire, comprising a conductive base strip ( 1 ) made of a metal or alloy material and having an upper widthwise surface and a lower widthwise surface, wherein a plurality of grooves ( 3 ) are pressed on at least one of the upper widthwise surface and the lower widthwise surface of the conductive base strip ( 1 ), wherein the plurality of grooves ( 3 ) are either v-shaped grooves or curve-shaped grooves, and a flat base strip region ( 4 ) remains between adjacent grooves ( 3 ), wherein a depth of each of the grooves ( 3 ) is 5% to 50% of a thickness of the conductive base strip ( 1 ), wherein the grooves ( 3 ) are arranged obliquely to the length direction of the conductive base strip ( 1 ) in a predefined inclination angle, wherein a total area of base strip regions ( 4 ) on at least one of the upper widthwise surface and the lower widthwise surface takes about 30% to 70% of a total area of at least one of the upper widthwise surface and the lower widthwise surface of the conductive base strip ( 1 ), wherein one or more solder layers ( 2 ) are plated or heat-coated either directly on the conductive base strip ( 1 ) or on a protective film formed on the conductive base strip ( 1 ), and wherein the one or more solder layers ( 2 ) interconnects the photovoltaic interconnect wire with one or more solar cells of photovoltaic modules, wherein each solder layer ( 2 ) is one or more of tin-lead alloy, tin-bismuth alloy, tin-copper alloy, tin-cerium alloy, tin-silver alloy, pure tin, and tin-silver-copper alloy, and wherein each solder layer has a total thickness of 3 μm to 30 μm.