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:
Jun. 29, 2021
Filed:
Jan. 16, 2020
Applicant:
O2micro Inc., Santa Clara, CA (US);
Inventor:
Guoxing Li, Sunnyvale, CA (US);
Assignee:
O2Micro, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/687 (2006.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); G01R 31/382 (2019.01); G01R 31/28 (2006.01); H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
H02J 7/0047 (2013.01); H01M 10/425 (2013.01); H01M 10/482 (2013.01); H02J 7/0021 (2013.01); H02J 7/0031 (2013.01); H02J 7/0036 (2013.01); H03K 17/6874 (2013.01); H02J 7/00302 (2020.01); H02J 7/00304 (2020.01); H02J 7/00306 (2020.01);
Abstract
A charge/discharge switch control circuit for a battery pack includes a set of driving terminals and detection circuitry coupled to the driving terminals. The driving terminals provide driving signals to control a status of a switch circuit to enable charging or discharging of the battery pack. The detection circuitry receives voltages at multiple terminals of the switch circuit, and detects a status of an interface of the battery pack according to the status of the switch circuit and a difference between the voltages. The interface can receive power to charge the battery pack and provide power from the battery pack to a load.