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:
May. 23, 2006
Filed:
Nov. 24, 2003
Pao-chuan Lin, Hsinchu, TW;
Chun-hsien Lee, Hsinchu, TW;
Yi-shuo Huang, Hsinchu, TW;
Chung-lin Lee, Hsinchu, TW;
Pao-Chuan Lin, Hsinchu, TW;
Chun-Hsien Lee, Hsinchu, TW;
Yi-Shuo Huang, Hsinchu, TW;
Chung-Lin Lee, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A battery energy balance circuit and a battery charging bypass circuit is disclosed for batteries being charged at the same time to be charged equally. When the terminal voltages of the batteries are different, a controllable power device switch in the circuit switches on and off at a high frequency in order to reduce the input current to the batteries with higher terminal voltages and to increase the input current to the batteries with lower terminal voltages, achieving the goal of equal charging. The disclosed energy balance circuit can avoid damages to the batteries as a result of overcharging. When the number of batteries increases, one can expand the system in a modularized way to prevent inconvenience of circuit designs.