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. 25, 2013
Filed:
Jan. 22, 2009
Lirong Xiao, Zhuhai, CN;
Shenyuan LI, Zhuhai, CN;
Lirong Xiao, Zhuhai, CN;
Shenyuan Li, Zhuhai, CN;
Actions Semiconductor Co. Ltd., Zhuhai, CN;
Abstract
The present invention is adapted for the field of power supply and provides a battery charging device and a method for controlling charging thereof, including: a charging circuit which has a charging current setting terminal for charging the battery according to charging current of the charging current setting terminal; a charging current control circuit which is connected with the charging current setting terminal and adjusts the charging current gradually according to equivalent resistance in the charging current control circuit; a general register circuit which is connected to the charging current control circuit and to control the equivalent resistance by setting value of a general register. In the present invention, a plurality of switching tubes and resistances are integrated into the charging current control circuit. The switching tubes is switched on or off by setting the value of the general register, thereby adjusting the existing charging current gradually and causing the voltage of the charging power source to descend/ascend smoothly. This provides a solution to the problem of equipment instability caused by the voltage fluctuation in the adjustment process of charging current in the existing technology.