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. 11, 2013
Filed:
Oct. 15, 2007
Flavius Lupu, San Jose, CA (US);
Constantin Bucur, Sunnyvale, CA (US);
Xiaojun Zeng, Shanghai, CN;
Kalyi Sheng, Shanghai, CN;
Anquan Xiao, Shanghai, CN;
Flavius Lupu, San Jose, CA (US);
Constantin Bucur, Sunnyvale, CA (US);
Xiaojun Zeng, Shanghai, CN;
Kalyi Sheng, Shanghai, CN;
Anquan Xiao, Shanghai, CN;
O2Micro Inc, Santa Clara, CA (US);
Abstract
A cell balancing circuit comprises a first cell having a first voltage, a second cell in series with the first cell and having a second voltage that is greater than the first voltage, and a bypass path in parallel with the second cell for enabling a bypass current for the second cell if a difference between the first voltage and the second voltage is greater than a predetermined threshold. The bypass current is enabled for a balancing time period that is proportional to the difference between the first voltage and the second voltage.