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. 31, 2022
Filed:
Jul. 29, 2019
Baidu Usa Llc, Sunnyvale, CA (US);
BAIDU USA LLC, Sunnyvale, CA (US);
Abstract
According to one embodiment, a battery backup system includes an output terminal, one or more BBUs coupled in parallel to provide backup power to an external electronic device coupled to the output terminal, and a control circuit to control the power distribution from the BBUs. Each of the BBUs includes a battery pack having one or more battery cells and a converter to regulate and output power to the output terminal. The control circuit is configured to control a duty cycle for each of the BBUs, which when used to drive the BBU, adjusts power output in order to balance charges amongst the BBUs. The duty cycle of each BBU is determined based on an output voltage across the output terminal, an output current flowing through the output terminal, and characteristics of the battery pack of the BBU.