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:
Dec. 20, 2016
Filed:
Oct. 28, 2014
Pmc-sierra Us, Inc., Sunnyvale, CA (US);
Tan Pham, San Jose, CA (US);
Microsemi Storage Solutions (U.S.), Inc., Aliso Viejo, CA (US);
Abstract
A system is provided for balancing voltage of two rechargeable energy storage devices connected in series at a common node. A voltage divider is configured to divide a total voltage across the two devices into first and second reference voltages. First and second circuit elements include, respectively: first and second comparators, first and second P-channel MOSFETs, first and second current limiting resistors, and first and second networks of resistors. The first circuit elements are in electrical communication and configured to actively discharge a first device of the two devices when a difference between a voltage at the common node and the first reference voltage is greater than a first predetermined voltage. The-second circuit elements are in electrical communication and configured to actively charge the first device when a difference between the voltage at the common node and the second reference voltage is less than a second predetermined voltage.