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. 29, 2012
Filed:
Feb. 02, 2010
Yasumichi Ohnuki, Saitama, JP;
Yasumichi Ohnuki, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A battery module voltage detector can reduce the difference in frequency response of an anti-aliasing filter for each battery module whose voltage is measured, and provide an accurate voltage measurement. The battery module voltage detector includes a plurality of switches connected to battery modules constituting a battery pack, resistors having an equal resistance value, and a filter composed of capacitors having equal capacitance and being disposed between the battery modules and the switches. The capacitors are divided into a first capacitor group and a second capacitor group which are symmetrical at the center of the battery pack. The first capacitor group is on the positive terminal side of the second battery. The second capacitor is on the negative terminal side of the battery pack. Capacitors may be connected between an output terminal of a (1+M/2)-th resistor and an N-th resistor, except a (1+m/2), the (1+M/2)-th resistor and the N-th resistor.