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:
Dec. 07, 2021
Filed:
Dec. 16, 2018
Applicant:
Shanghai Hugong Electric (Group) Co., Ltd., Shanghai, CN;
Inventors:
Assignee:
SHANGHAI HUGONG ELECTRIC (GROUP) CO., LTD., Shanghai, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/10 (2006.01); H02J 9/06 (2006.01); H02M 7/40 (2006.01); H02M 3/335 (2006.01); B23K 9/10 (2006.01);
U.S. Cl.
CPC ...
B23K 9/1043 (2013.01); B23K 9/1075 (2013.01); H02J 9/06 (2013.01); H02M 1/10 (2013.01); H02M 7/40 (2013.01); B23K 9/1012 (2013.01); H02M 3/33507 (2013.01); H02M 3/33523 (2013.01);
Abstract
The invention provides a double-power-supply switching control system for a welding machine and method. The welding machine double-power-supply switching control method comprises the steps of: continuously detecting and modifying an input voltage signal by a signal modification unit; under the control of a control unit, judging, by a judgment unit, whether to perform voltage doubling, controlling to execute voltage doubling switching action, and locking an actual input voltage mode of a welding machine by a locking unit; and finally outputting matched output current by a power supply output unit.