Engineering FAQ Guide
Composite PV Ribbon: Specification and Trial FAQ
What is Copper-Aluminum Composite PV Ribbon?
copper-aluminum composite conductor with solderable surface coating.
Copper-aluminum composite PV ribbon combines a composite conductor with a solderable coating. To plan a trial, provide the cell design, ribbon dimensions, coating, stringer process and resistance target, together with the copper ribbon used as the comparison.
Primary Applications
- PV module interconnection
- solar cell stringing
- copper-saving module designs
- TOPCon module evaluation
Critical RFQ Specifications
- interconnect function and cell layout
- diameter or width and thickness
- coating alloy and thickness
- mechanical requirements
- spool and feeding conditions
Selection
Does the cell technology determine the solder coating?
Cell metallization, contact layout and the approved joining process determine the coating requirement together. State coating alloy and thickness separately from equipment temperature, dwell time, pressure and cooling. MBB and SMBB describe interconnect layouts, rather than a coating alloy.
How should a composite ribbon be compared with copper?
Use the same module current path and a defined copper baseline. State whether dimensions or resistance are held constant; compare coating, joint resistance, handling, copper use and accepted module output under the same test conditions.
Specifications
How do I specify round and flat interconnect dimensions?
For round wire, state metal diameter and finished coated diameter with tolerances. For flat ribbon, state width, thickness, corners and coating build. Add straightness or camber, spool dimensions, winding pattern and feeding tension.
Procurement
What should a Copper-Aluminum Composite PV Ribbon inquiry include?
Include width, thickness, coating, spool format, cell technology, soldering temperature, drawing revision, intended use, requested sample or production quantity, packaging and destination. Confirm the required inspection records and schedule for that specification.
Testing
What should a ribbon trial measure?
Record the cell and ribbon lots, geometry, coating and stringer settings. Check feeding, wetting, peel behavior, cell damage by EL inspection and resistance. Agree any module reliability tests for the changed bill of materials, with methods and acceptance limits.