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:
Jul. 14, 2009
Filed:
Jan. 05, 2006
Jing-yih Cherng, Tao-Yuan, TW;
Wei-chen Wu, Tao-Yuan, TW;
Steven Hou, Tao-Yuan, TW;
Samual Chen, Tao-Yuan, TW;
Jing-Yih Cherng, Tao-Yuan, TW;
Wei-Chen Wu, Tao-Yuan, TW;
Steven Hou, Tao-Yuan, TW;
Samual Chen, Tao-Yuan, TW;
Amita Technologies Inc. Ltd., Taoyuan, TW;
Abstract
A rechargeable lithium battery protection device uses an external circuit to control charging or discharging a rechargeable lithium battery for preventing an overcharge or an overdischarge of the battery. The rechargeable lithium battery protection device includes a diagnostic circuit, a light coupling circuit, a balance circuit, and an identifier circuit. The battery diagnostic circuit checks the voltage of the chargeable battery and outputs a detect signal, and then the balance circuit determines whether or not the detect signal is an overcharge signal and discharges the battery. Meanwhile, the light coupling circuit adjusts an impedance of the light coupling circuit according to the detect signal for disconnecting the battery from the external circuit and the identifier circuit provides the position of a battery that sends out the signal.