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:
May. 19, 2020
Filed:
Nov. 30, 2017
Renesas Electronics America Inc., Santa Clara, CA (US);
Tetsuo Sato, San Jose, CA (US);
Shigeru Maeta, San Jose, CA (US);
Toshio Kimura, Cupertino, CA (US);
Atsushi Mitamura, Tokyo, JP;
Akira Negishi, Gunma-ken, JP;
Gary S. Jacobson, Norwalk, CT (US);
Renesas Electronics America Inc., Milpitas, CA (US);
Abstract
A transformer less battery charger system. In one embodiment, the battery charger system includes input terminals for receiving an AC voltage, output terminals for receiving terminals of a rechargeable battery pack, and a non-isolated DC-DC converter coupled between the input terminals and the output terminals. A device is also coupled somewhere between the input terminals and the output terminals. The device is configured to selectively and indirectly couple the input terminals to the output terminals. More particularly, the device indirectly couples the input terminals to the output terminals when the rechargeable battery pack terminals are received by the output terminals, and the device indirectly decouples the input terminals from the output terminals when the rechargeable battery pack terminals are separated from the output terminals.