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. 31, 2012
Filed:
Nov. 24, 2006
Jeon Keun OH, Daejeon, KR;
Joong Hui Lee, Daejeon, KR;
Soo Yeup Jang, Daejeon, KR;
SK Innovation Co., Ltd., Seoul, KR;
Abstract
The present invention relates to an apparatus and method for testing batteries, which can prevent errors from occurring due to the tolerance of voltage sensors when the charged states of batteries are measured, and can charge a battery having a charged state deteriorated due to the difference in the resistance of each battery. The apparatus includes a voltage circuit for measuring voltages of N batteries. A resistance circuit decreases voltages of batteries, which are greater than a reference voltage. A connection switch unit selects any one of the N batteries. A divert change unit separates polarities of each battery and changes positions of an cathode and a anode of the battery depending on separated polarities. A selection switch unit selectively connects the cathode and anode of the battery to an cathode and a anode of the voltage circuit or the resistance circuit.