The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2016
Filed:
Nov. 08, 2012
Manohar Das, Rochester Hills, MI (US);
Vernon Fernandez, Rochester Hills, MI (US);
John Paille, Rochester Hills, MI (US);
Douglas P Gouin, Lakeshore, CA (US);
Manohar Das, Rochester Hills, MI (US);
Vernon Fernandez, Rochester Hills, MI (US);
John Paille, Rochester Hills, MI (US);
Douglas P Gouin, Lakeshore, CA (US);
FCA US LLC, Auburn Hills, MI (US);
Abstract
A probeless energy delivery controller for a resistance spot welding system includes a power supply module that generates a first current and a power delivery module configured to generate a second current from the first current. The current is delivered to a first electrode and a second electrode that have at least two weld pieces interposed there-between. As the current flows through the weld pieces, the resistance and temperature of the weld pieces increase such that the weld pieces melt. The system further includes a voltage control module that receives a current reading indicating a value of the second current, estimates a resistance of the weld pieces based on the value of the second current, and determines a phase angle for setting a voltage outputted by the power supply module based on the estimated resistance and a power profile. The power supply module generates the first current based on the phase angle.