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:
Apr. 09, 2013
Filed:
Dec. 27, 2010
Chin-hui Wang, Taipei County, TW;
Zheng-lin Pu, Shanghai, CN;
Ying-jie Han, Shanghai, CN;
Hui Wang, Jiangxi Province, CN;
Chin-Hui Wang, Taipei County, TW;
Zheng-Lin Pu, Shanghai, CN;
Ying-Jie Han, Shanghai, CN;
Hui Wang, Jiangxi Province, CN;
Richpower Microelectrics Corporation, Grand Cayman, KY;
Abstract
A switch embedded integrated circuit for battery protection includes a MOSFET having a body diode, and a control logic circuit for switching the MOSFET and the direction of the body diode to control the charge current to and the discharge current from a battery. The control logic circuit turns off the MOSFET once any abnormal operation such as over-voltage and under-voltage happens, and turns on the MOSFET according to an OVPR threshold, an OVPR delay time, an UVPR threshold and an UVPR delay time. The OVPR threshold and the OVPR delay time are determined depending on the battery being coupled to a load or a charger, or floating.