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:
Jul. 09, 2019
Filed:
Jun. 20, 2017
Amazon Technologies, Inc., Seattle, WA (US);
Mike MacGregor, Seattle, WA (US);
Darin Lee Frink, Lake Tapps, WA (US);
Richard Arvel Stevens, Auburn, WA (US);
William Mische, Seattle, WA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
Automatic transfer switch and power supply units (ATSPSUs) and related methods condition switching to a second AC power source to allow a battery module to supply DC power to a load. An ATSPSU includes a power supply unit (PSU), an automatic transfer switch (ATS), and an ATSPSU controller configured to control the ATS to switch to the second AC power source in response to the voltage of the first AC power source having decreased in magnitude by a voltage drop value over a period of time greater than an allowable amount of time for the voltage drop value, and at least one of a voltage differential between DC power supply lines being less than a voltage threshold value, and a state of charge of a battery module operatively coupled with the DC power supply lines being less than a threshold state of charge.