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:
Oct. 07, 1997
Filed:
Nov. 06, 1995
Eiji Kadouchi, Hirakata, JP;
Yuichi Watanabe, Tokyo-to, JP;
Megumi Kinoshita, Fujisawa, JP;
Noboru Ito, Kadoma, JP;
Kanji Takata, Neyagawa, JP;
Matsushita Electric Industry Co., Ltd., Osaka-Fu, JP;
Abstract
In a method of detecting deterioration of a battery pack consisting of a series assembly of a plurality of battery modules during charging, on the basis of a voltage difference between a plurality of battery modules, deterioration detection is inhibited until a predetermined capacity is charged after starting of the charge. Also, in a detection apparatus for deterioration in a battery pack according to the present invention, a deterioration reference discharge voltage value which should correspond to a discharge current value and a temperature value is calculated on the basis of reference data, and the deterioration reference discharge voltage value is compared with an actual discharge voltage value to judge whether deterioration occurs or not.